subject:(base station)

University of New South Wales

1. Mahmud, Sabbir. Energy efficient multiple base stations deployment in wireless sensor networks.

Degree: Computer Science & Engineering, 2015, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/54666 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35535/SOURCE02?view=true

► Wireless sensor network (WSN) is widely used in various applications rangingfrom area monitoring, health care monitoring, bush _re detection, to environmental monitoring, agricultural and structural… (more)

▼ Wireless sensor network (WSN) is widely used in various applications rangingfrom area monitoring, health care monitoring, bush _re detection, to environmental monitoring, agricultural and structural monitoring. In WSNs, sensor nodes,typically battery powered, communicate with each other using radio signals andsend the sensed data to a designated base station. In some applications of WSN,several thousands of sensor nodes might be deployed over the monitored regionspanning several kilometres. Hence, it is very difficult to replace the batteries ofthe sensor nodes which are deployed over a large, remote and hostile area. Asa result, it is important to save the energy of each sensor node to increase thelifetime of a WSN. In a WSN, each sensor node spends most of its energy onrelaying the data of other sensor nodes. Multiple base stations can be deployedto reduce the amount of data, a sensor node needs to relay, thus increase the net-work lifetime. Furthermore, multiple base stations can also reduce the latencyof a packet delivery.This thesis studies multiple base stations deployment problems in WSNs,and presents a set of efficient techniques. Firstly, we present a quadratic-timealgorithm to optimally place a base station in a WSN so that the total energyconsumption of all the sensor nodes is minimized. Given a cluster of sensor nodem, the time complexity of the algorithm is O(m2). We also propose a heuristicalgorithm to evenly distribute energy consumptions of all the clusters of a WSN.Secondly, we propose a 2-approximation algorithm for minimizing the shortesthop distance from all the sensor nodes to the designated base stations in orderto deploy k base stations in a WSN. For a single base station, we present anoptimal algorithm for finding the optimal location of the base station. We alsopropose a modified version of our previous heuristics for balancing clusters ofsensors and show the simulation results of 2-approximation algorithm and theheuristics on 171 instances of different distributions. The simulation results showthat the cluster balancing heuristics performs significantly better than the 2-approximation algorithm.Lastly, we present two polynomial time heuristics for multiple base stationdeployment problems. In case of a single base station, we propose the firstpolynomial time algorithm for optimally placing a static base station in a clusterof sensor node to maximize the cluster's lifetime, and a heuristic for deploying amobile base station in a cluster of sensor node to increase the cluster's lifetime. Advisors/Committee Members: Wu, Hui, Computer Science & Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Base station deployment; WSN; Energy efficient; Mobile base station; Static base station

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APA (6^th Edition):

Mahmud, S. (2015). Energy efficient multiple base stations deployment in wireless sensor networks. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54666 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35535/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Mahmud, Sabbir. “Energy efficient multiple base stations deployment in wireless sensor networks.” 2015. Doctoral Dissertation, University of New South Wales. Accessed April 13, 2021. http://handle.unsw.edu.au/1959.4/54666 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35535/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Mahmud, Sabbir. “Energy efficient multiple base stations deployment in wireless sensor networks.” 2015. Web. 13 Apr 2021.

Vancouver:

Mahmud S. Energy efficient multiple base stations deployment in wireless sensor networks. [Internet] [Doctoral dissertation]. University of New South Wales; 2015. [cited 2021 Apr 13]. Available from: http://handle.unsw.edu.au/1959.4/54666 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35535/SOURCE02?view=true.

Council of Science Editors:

Mahmud S. Energy efficient multiple base stations deployment in wireless sensor networks. [Doctoral Dissertation]. University of New South Wales; 2015. Available from: http://handle.unsw.edu.au/1959.4/54666 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:35535/SOURCE02?view=true

University of Toronto

2. Shen, Kaiming. Algorithms for Base Station Assignment in Heterogeneous Cellular Networks.

Degree: 2013, University of Toronto

URL: http://hdl.handle.net/1807/69990

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This thesis aims to find out the base station (BS) assignment strategy which achieves load balancing in heterogeneous networks from the proportional fairness perspective. There… (more)

Subjects/Keywords: base station assignment; heterogeneous networks; 0544; 0984

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APA (6^th Edition):

Shen, K. (2013). Algorithms for Base Station Assignment in Heterogeneous Cellular Networks. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/69990

Chicago Manual of Style (16^th Edition):

Shen, Kaiming. “Algorithms for Base Station Assignment in Heterogeneous Cellular Networks.” 2013. Masters Thesis, University of Toronto. Accessed April 13, 2021. http://hdl.handle.net/1807/69990.

MLA Handbook (7^th Edition):

Shen, Kaiming. “Algorithms for Base Station Assignment in Heterogeneous Cellular Networks.” 2013. Web. 13 Apr 2021.

Vancouver:

Shen K. Algorithms for Base Station Assignment in Heterogeneous Cellular Networks. [Internet] [Masters thesis]. University of Toronto; 2013. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1807/69990.

Council of Science Editors:

Shen K. Algorithms for Base Station Assignment in Heterogeneous Cellular Networks. [Masters Thesis]. University of Toronto; 2013. Available from: http://hdl.handle.net/1807/69990

3. Alam, Tahmid. SW features in power systems for telecom equipment.

Degree: 2013, , School of Engineering

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5081

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This thesis report is a research effort with Ericsson’s devices and internal documents. In essence this thesis report contributes with a perspective to understand… (more)

Subjects/Keywords: RBS; Power; devices; software; base station; communication

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APA (6^th Edition):

Alam, T. (2013). SW features in power systems for telecom equipment. (Thesis). , School of Engineering. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5081

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alam, Tahmid. “SW features in power systems for telecom equipment.” 2013. Thesis, , School of Engineering. Accessed April 13, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5081.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alam, Tahmid. “SW features in power systems for telecom equipment.” 2013. Web. 13 Apr 2021.

Vancouver:

Alam T. SW features in power systems for telecom equipment. [Internet] [Thesis]. , School of Engineering; 2013. [cited 2021 Apr 13]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5081.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alam T. SW features in power systems for telecom equipment. [Thesis]. , School of Engineering; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5081

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ottawa

4. Kalantari, Elham. Base Station Placement in Integrated Aerial and Terrestrial Wireless Cellular Networks .

Degree: 2020, University of Ottawa

URL: http://hdl.handle.net/10393/40169

► Base station (BS) location is an important problem in designing cellular networks since its solution has a profound impact on the overall network performance. An… (more)

▼ Base station (BS) location is an important problem in designing cellular networks since its solution has a profound impact on the overall network performance. An optimal BS location depends on the traffic distribution, propagation pathloss and many system parameters, which renders its analytical study difficult so that numerical algorithms are widely used instead. In this thesis, the problem is studied analytically from a fundamental perspective. By formulating the problem as a convex optimization problem, we can characterize the globally-optimum location and obtain a number of closed-form solutions and insights. Afterwards, we consider drones as aerial BSs that can enhance network coverage or capacity by moving supply towards demand when required. Utilizing drone-BSs (DBSs) is a promising approach to boost the agility and flexibility of future wireless networks. The specific attributes of drones such as mobility could be especially useful for future applications with extreme demands. DBSs can play a remarkable role as a communication network facilitator when the temporal and spatial variations in user densities and rates are expected to result in difficult-to-predict traffic patterns. However, deploying DBSs in a network presents several challenges. One important issue is finding the efficient 3D placement of DBSs to satisfy the dynamic requirements of the system. Another challenge is the limited wireless backhaul capacity of DBSs and consequently, higher latency incurred. This issue can be alleviated by providing content caching in DBSs to decrease backhaul congestion and latency. In this thesis, we find locations of DBSs for various network objectives such as minimizing the number of DBSs or the transmit power, maximizing the number of covered users or total rate of the users in a wireless network, while considering the restrictions of the network such as finite backhaul capacity, disparate quality of service requirement of users, and limited access bandwidth into account. To this end, we propose various mathematical frameworks and efficient algorithms to design, optimize, and deploy drone-based communication systems. We also obtain user-BS associations and bandwidth allocations in different scenarios which is an involved problem due to mobility of DBSs. Extensive simulation results demonstrate the effectiveness of the proposed algorithms and provide useful insights that can be used to develop design guidelines.

Subjects/Keywords: Aerial Base Station; Wireless Networks; Optimization

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APA (6^th Edition):

Kalantari, E. (2020). Base Station Placement in Integrated Aerial and Terrestrial Wireless Cellular Networks . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/40169

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kalantari, Elham. “Base Station Placement in Integrated Aerial and Terrestrial Wireless Cellular Networks .” 2020. Thesis, University of Ottawa. Accessed April 13, 2021. http://hdl.handle.net/10393/40169.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kalantari, Elham. “Base Station Placement in Integrated Aerial and Terrestrial Wireless Cellular Networks .” 2020. Web. 13 Apr 2021.

Vancouver:

Kalantari E. Base Station Placement in Integrated Aerial and Terrestrial Wireless Cellular Networks . [Internet] [Thesis]. University of Ottawa; 2020. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10393/40169.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kalantari E. Base Station Placement in Integrated Aerial and Terrestrial Wireless Cellular Networks . [Thesis]. University of Ottawa; 2020. Available from: http://hdl.handle.net/10393/40169

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

5. Verweij, Peter (author). High precision positioning system for Ghana.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:6c3ebc2c-b610-4a4d-950c-00058e27c1f6

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In this report, the design process of a high precision positioning system for Ghana is described. The system consists of two devices, a base station… (more)

Subjects/Keywords: Ghana; GNSS; Positioning; Rover; Base station

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APA (6^th Edition):

Verweij, P. (. (2020). High precision positioning system for Ghana. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6c3ebc2c-b610-4a4d-950c-00058e27c1f6

Chicago Manual of Style (16^th Edition):

Verweij, Peter (author). “High precision positioning system for Ghana.” 2020. Masters Thesis, Delft University of Technology. Accessed April 13, 2021. http://resolver.tudelft.nl/uuid:6c3ebc2c-b610-4a4d-950c-00058e27c1f6.

MLA Handbook (7^th Edition):

Verweij, Peter (author). “High precision positioning system for Ghana.” 2020. Web. 13 Apr 2021.

Vancouver:

Verweij P(. High precision positioning system for Ghana. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Apr 13]. Available from: http://resolver.tudelft.nl/uuid:6c3ebc2c-b610-4a4d-950c-00058e27c1f6.

Council of Science Editors:

Verweij P(. High precision positioning system for Ghana. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:6c3ebc2c-b610-4a4d-950c-00058e27c1f6

University of Sydney

6. Gao, Mingjin. Research on the Architecture Design of Centralized Base Station and Its Baseband Resource Allocation .

Degree: 2018, University of Sydney

URL: http://hdl.handle.net/2123/18220

► Led by the big data application and the ``Internet Plus" action plan, the Institute of Computing Technology of the Chinese Academy of Sciences proposes a… (more)

▼ Led by the big data application and the ``Internet Plus" action plan, the Institute of Computing Technology of the Chinese Academy of Sciences proposes a Super Base Station (SBS) system for the future mobile communications network. The SBS system utilizes the ``physically centralized, logically distributed" resource pool sharing technology to cope with the requirements of future mobile communications network. With the concept of SBS, how to design the SBS's architecture according to its definition and features, and realize intelligent resource allocation within the large-scale resource pool according to the users' characteristics and services' requirements, become critical problems. This thesis focuses on the architecture design of SBS and its baseband processing unit (BPU) resource allocation. The main contents and contributions of this thesis are summarized as follows: 1. Research on the Architecture Design of SBS To meet the explosive growth of mobile data traffic, massive and high-density base stations (BSs) need to be deployed in cellular networks to increase the spatial spectral reuse efficiency. The dense deployment of BSs will lead to a series of problems, such as huge capital expenditure (CAPEX) and operating expense (OPEX), low infrastructure utilization ratio, as well as severe inter-cell interference. To tackle these problems, a new network architecture for next generation cellular networks becomes essential. Motivated by this, we develop a SBS network architecture for future wireless systems in this thesis. The proposed SBS architecture consists of three key physical components, namely, hybrid heterogeneous radio unit pool (HHRUP), line interface switch unit (LISU) and computing resource pool (CRP). On top of these physical components, there are two main logical modules in the proposed SBS framework, called virtualized BS (VBS) and virtualized software defined core network (VSDCN). The functions of these two modules and how they are used to create virtual networks are explained in details. A SBS prototype is presented to verify the architecture design. A typical application of SBS in Internet Information Broadcast-Storage (IIBS) system, is provided to demonstrate the advantages of the proposed SBS architecture over existing systems. 2. Research on Homogeneous Baseband Resource Allocation As a promising wireless network virtualization technology, VBS has been proposed to tackle the problem of low-efficient utilization of BS's computational resources, e.g., BPU. In this thesis, we focus on the efficient BPU allocation problem through a contract-theoretic approach. Specifically, we first consider the BPUs as a kind of trading resources. Then we establish a monopoly market, where the infrastructure provider (InP) is the monopolist dominating all the BPUs, and multiple mobile network operators (MNOs) intend to rent BPUs from the InP for processing their baseband signals. In such a market, the InP offers a set of quality-price contract items to the MNOs based on statistical information of their types, and…

Subjects/Keywords: Centralised base station; system architecture; baseband processing unit; resource allocation; virtualized base station

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APA (6^th Edition):

Gao, M. (2018). Research on the Architecture Design of Centralized Base Station and Its Baseband Resource Allocation . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/18220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gao, Mingjin. “Research on the Architecture Design of Centralized Base Station and Its Baseband Resource Allocation .” 2018. Thesis, University of Sydney. Accessed April 13, 2021. http://hdl.handle.net/2123/18220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gao, Mingjin. “Research on the Architecture Design of Centralized Base Station and Its Baseband Resource Allocation .” 2018. Web. 13 Apr 2021.

Vancouver:

Gao M. Research on the Architecture Design of Centralized Base Station and Its Baseband Resource Allocation . [Internet] [Thesis]. University of Sydney; 2018. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2123/18220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gao M. Research on the Architecture Design of Centralized Base Station and Its Baseband Resource Allocation . [Thesis]. University of Sydney; 2018. Available from: http://hdl.handle.net/2123/18220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

7. Vasishta, Anuj. Optimal Relay Station Placement in Broadband Wireless Access Networks.

Degree: 2012, University of Waterloo

URL: http://hdl.handle.net/10012/6949

► With the development of IEEE 802.16j multihop relay protocol, the requirement to enhance the network capacity in a wireless network has been met e ectively.… (more)

Subjects/Keywords: optimization; base station; relay station; telecommunication; cell site; multiihop

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APA (6^th Edition):

Vasishta, A. (2012). Optimal Relay Station Placement in Broadband Wireless Access Networks. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6949

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vasishta, Anuj. “Optimal Relay Station Placement in Broadband Wireless Access Networks.” 2012. Thesis, University of Waterloo. Accessed April 13, 2021. http://hdl.handle.net/10012/6949.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vasishta, Anuj. “Optimal Relay Station Placement in Broadband Wireless Access Networks.” 2012. Web. 13 Apr 2021.

Vancouver:

Vasishta A. Optimal Relay Station Placement in Broadband Wireless Access Networks. [Internet] [Thesis]. University of Waterloo; 2012. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10012/6949.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vasishta A. Optimal Relay Station Placement in Broadband Wireless Access Networks. [Thesis]. University of Waterloo; 2012. Available from: http://hdl.handle.net/10012/6949

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

8. Hoque, Mohammad Mozammel. Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns.

Degree: 2011, , School of Engineering

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5153

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Multihop wireless access networks are the subject of much interest at present. In the last few years they have moved from the domain of… (more)

▼

Multihop wireless access networks are the subject of much interest at present. In the last few years they have moved from the domain of an interesting research topic to one having a significant impact on the commercial world. WiMAX (Worldwide Interoperability for Microwave Access) is introduced by the Institute of Electrical and Electronic Engineers with designated standards 802.16d-2004 and 802.16e-2005 (used in fixed wireless applications) and 802.16k-2006 (mobile wireless) to provide a worldwide interoperability for microwave access. For WiMAX networks, the IEEE has started in 2006 to work on 802.16j "Mobile Multihop Relay" (MMR). 802.16j offers a potential solution to some of the classic problems in deployment of radio access networks. Comprising low-cost relays associated with base stations (BSs), they can be used both to realize larger coverage areas for BSs and to increase capacity for congested areas. The basic idea behind MMR is to allow WiMAX base stations which do not have a backhaul connection to communicate with base stations that do. Multihop wireless systems have the potential to offer improved coverage and capacity over single-hop radio access systems. Standards development organizations are considering how to incorporate such techniques into new standards. One such initiative is the IEEE 802.16j standardization activity, adding relay capabilities to IEEE 802.16 systems. Relay-based systems typically comprise small form factor low-cost relays, which are associated with specific base stations. The relays can be used to extend the coverage area of a BS and/or increase the capacity of a wireless access system. Typically, it is envisaged that they could be used in the early stages of network rollout to provide coverage to a large area at lower cost than a BS only solution; they can also be used to provide increased capacity in more developed networks as well as coverage to coverage holes such as areas in the shadows of buildings. As the urban structures are getting heavily dominated by buildings day by day, network coverage in heaving areas blocked by buildings is a big challenge. The aim of 802.16j is to extend coverage area with improved capacity and low cost by the use of relay stations. In this thesis, the performance of standard handover mechanisms in MMR has been studied. NCTUns-6.0, which is an open source simulation tool that supports 802.16j standard, has been used in this thesis for the simulation. Only Hard Handover has been simulated on 802.16j scenario as NCTUns-6.0 only supports this handover method. Same simulation has been made on 802.16e scenario as well for the purpose of quantitative comparison. The performance parameters have been handover time, downlink throughput and transfer of packets. Keywords: Mobile Multhop Relay(MMR), WiMAX, Hard Handover, NCTUns, Base station(BS), Relay station(RS), OFDMA

+46723092077

Subjects/Keywords: Mobile Multhop Relay(MMR); WiMAX; Hard Handover; NCTUns; Base station(BS); Relay station(RS); OFDMA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hoque, M. M. (2011). Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns. (Thesis). , School of Engineering. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5153

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hoque, Mohammad Mozammel. “Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns.” 2011. Thesis, , School of Engineering. Accessed April 13, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5153.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hoque, Mohammad Mozammel. “Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns.” 2011. Web. 13 Apr 2021.

Vancouver:

Hoque MM. Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns. [Internet] [Thesis]. , School of Engineering; 2011. [cited 2021 Apr 13]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5153.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hoque MM. Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns. [Thesis]. , School of Engineering; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5153

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

9. Krolikowski, Jonatan. Optimal Content Management and Dimensioning in Wireless Networks : Gestion de contenu optimale et dimensionnement de mémoire dans les réseaux sans fil.

Degree: Docteur es, Réseaux, information et communications, 2018, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2018SACLS452

► L'augmentation massive du trafic cellulaire pose de sérieux défis à tous les acteurs concernés par la diffusion de contenu sans fil. Alors que la densification… (more)

▼ L'augmentation massive du trafic cellulaire pose de sérieux défis à tous les acteurs concernés par la diffusion de contenu sans fil. Alors que la densification du réseau permet d’accéder à des utilisateurs supplémentaires, les liaisons de transport à grande vitesse et à grande capacité sont coûteuses. La mise en cache du contenu populaire en bordure du réseau permettra de décharger le trafic utilisateur de ces connexions, susceptibles d'être encombrées, ainsi que des centres de données du réseau fédérateur. Cette thèse propose un modèle économique dans lequel un opérateur de réseau mobile (Mobile Network Operator, MNO) pré-installe et entretient des caches sur son équipement sans fil (stations de base avec cache, CBS). L’espace mémoire ainsi que les capacités de calcul sont ensuite loués aux fournisseurs de contenu (CP) qui souhaitent rapprocher leur contenu de l'utilisateur. Pour une compensation financière, un CP peut alors décharger le trafic de son centre de données et améliorer la qualité de service des utilisateurs. Le CP prend des décisions de placement de contenu en fonction des données prédictives sur le trafic des utilisateurs et la popularité du contenu. Dans la phase de livraison, un utilisateur peut être desservi à partir des caches pour le cas où il serait associé à une station sur laquelle le contenu demandé est mis en cache. Ce travail examine trois aspects du modèle économique proposé : La première question de recherche porte sur l'association des utilisateurs en tant qu'élément central du schéma de mise en cache à la bordure du réseau. Les stratégies d'association des utilisateurs prenant en compte le cache peuvent permettre aux utilisateurs dans des zones de chevauchement de couverture d'être associés à une CBS contenant le contenu demandé plutôt que conventionnellement à celui qui fournit le signal le plus puissant. La thèse propose un algorithme décentralisé original pour une association d'utilisateurs appelée Generalized Bucket-filling qui permet des gains au-delà de la maximisation du taux de réussite. Les mesures de performance telles que le débit du réseau et l'équilibrage de la charge des utilisateurs parmi les CBS sont prises en compte. Les expériences montrent que l'association des utilisateurs au cache augmente le taux de réussite sans surcharger les CBS uniques tout en fournissant un débit élevé du système. Le deuxième problème traité concerne un seul CP qui doit décider de l'espace de cache à louer à chaque CBS pour un prix fixe et du contenu à placer. Ses choix doivent être basés sur des estimations de la popularité des fichiers ainsi que sur la politique d'association des utilisateurs du MNO. Le problème de leasing et de placement du contenu du cache est formulé sous la forme d'un problème non linéaire mixte en nombres entiers (NLMIP). Dans sa solution, le problème est séparé en un sous-problème linéaire discret et un sous-problème continu non linéaire utilisant la décomposition de Benders. Le CP et le MNO coopèrent, aidant le CP à prendre des décisions optimales qui profitent aux… Advisors/Committee Members: Di Renzo, Marco (thesis director).

Subjects/Keywords: Contenu; Réseau sans fil; Cache; Station de base; Mémoire; Planification; Content; Wireless network; Cache; Base station; Memory; Scheduling

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APA (6^th Edition):

Krolikowski, J. (2018). Optimal Content Management and Dimensioning in Wireless Networks : Gestion de contenu optimale et dimensionnement de mémoire dans les réseaux sans fil. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2018SACLS452

Chicago Manual of Style (16^th Edition):

Krolikowski, Jonatan. “Optimal Content Management and Dimensioning in Wireless Networks : Gestion de contenu optimale et dimensionnement de mémoire dans les réseaux sans fil.” 2018. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed April 13, 2021. http://www.theses.fr/2018SACLS452.

MLA Handbook (7^th Edition):

Krolikowski, Jonatan. “Optimal Content Management and Dimensioning in Wireless Networks : Gestion de contenu optimale et dimensionnement de mémoire dans les réseaux sans fil.” 2018. Web. 13 Apr 2021.

Vancouver:

Krolikowski J. Optimal Content Management and Dimensioning in Wireless Networks : Gestion de contenu optimale et dimensionnement de mémoire dans les réseaux sans fil. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2018. [cited 2021 Apr 13]. Available from: http://www.theses.fr/2018SACLS452.

Council of Science Editors:

Krolikowski J. Optimal Content Management and Dimensioning in Wireless Networks : Gestion de contenu optimale et dimensionnement de mémoire dans les réseaux sans fil. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2018. Available from: http://www.theses.fr/2018SACLS452

Universidade Estadual de Campinas

10. Pires, Marcela Miranda de Oliveira, 1984-. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base.

Degree: Faculdade de Engenharia Civil, Arquitetura e Urbanismo; Programa de Pós-Graduação em Engenharia Civil, 2019, Universidade Estadual de Campinas

URL: PIRES, Marcela Miranda de Oliveira. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. 2019. 1 recurso online (233 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/333407>. Acesso em: 15 mar. 2019. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/333407

►

Orientador: Patricia Stella Pucharelli Fontanini

Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo

Made available in DSpace on 2019-03-15T14:32:16Z… (more)

▼

Orientador: Patricia Stella Pucharelli Fontanini

Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo

Made available in DSpace on 2019-03-15T14:32:16Z (GMT). No. of bitstreams: 1 Pires_MarcelaMirandaDeOliveira_M.pdf: 9492169 bytes, checksum: fde03885a67b7486ec906e07ce2a01db (MD5) Previous issue date: 2019

Resumo: A implantação de Estações Rádio Base (ERB) é necessária para a ampliação do sistema de telefonia das empresas de telecomunicações. Composta por uma cadeia produtiva de diferentes sistemas e processos construtivos, a implantação de ERBs requer maior controle nos prazos destas obras. Compreender a execução dos processos construtivos é fundamental, a fim de evitar desperdícios e possível impacto na entrega final, ocasionando em atraso no funcionamento das estações. Assim, esta pesquisa teve como objetivo principal propor diretrizes para a melhoria dos sistemas e processos construtivos na implantação de ERBs. Como objetivos específicos estudou-se a identificação dos problemas nas interfaces da cadeia de suprimentos das ERBs, o entendimento do lead time do processo construtivo durante essa implantação e análise de possíveis impactos nos prazos das obras, a partir das escolhas dos sistemas construtivos nas ERBs. Como estratégia de pesquisa foi adotado o design science research (DSR), cujo método permite propor soluções práticas para o mundo real. Como parte do método, foi realizado um estudo de caso na obra de uma operadora de telecomunicações do Brasil. A pesquisa consistiu nas seguintes etapas: realização do mapeamento sistemático da literatura (MSL), para proporcionar melhor conscientização do problema de pesquisa, aplicação do questionário diagnóstico que permitiu o melhor entendimento dos envolvidos nos processos produtivos de ERBs, a identificação dos processos a partir da coleta de dados das entrevistas semiestruturadas, análise dos sistemas construtivos utilizados, avaliação de documentos e projetos do estudo de caso, utilização da ferramenta de mapa de fluxo de valor para desenhar o estado atual dos processos construtivos e identificar os desperdícios, análise dos dados e elaboração das diretrizes. Por fim, realizou-se a aplicação de um questionário de diretrizes finais permitindo a avaliação destas por profissionais da área. Os resultados obtidos ao final da pesquisa retratam as diretrizes baseadas nos pontos observados dos sistemas e processos construtivos da implantação de uma ERB. Outra contribuição relevante é o preenchimento da lacuna encontrada no mapeamento sistemático da literatura. A lacuna detectada foi a falta de informação sobre o detalhamento dos sistemas e processos construtivos de ERB. Sendo percebido que grande parte das pesquisas está direcionada às áreas de demandas energéticas e térmicas de ERBs. Assim, essa pesquisa contribuiu para a compreensão e sistematização dos processos construtivos que envolvem a implantação de ERBs no âmbito da Engenharia Civil, contribuindo para a condução de futuros estudos, além de…

Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS, Fontanini, Patricia Stella Pucharelli, 1974-, Yacoub, Michel Daoud, Mota, Lia Toledo Moreira.

Subjects/Keywords: Telecomunicações; Produção enxuta; Sistemas construtivos; Estações de base; Base station; Construction; Telecommunications; Lean production

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pires, Marcela Miranda de Oliveira, 1. (2019). Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. (Masters Thesis). Universidade Estadual de Campinas. Retrieved from PIRES, Marcela Miranda de Oliveira. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. 2019. 1 recurso online (233 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/333407>. Acesso em: 15 mar. 2019. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/333407

Chicago Manual of Style (16^th Edition):

Pires, Marcela Miranda de Oliveira, 1984-. “Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base.” 2019. Masters Thesis, Universidade Estadual de Campinas. Accessed April 13, 2021. PIRES, Marcela Miranda de Oliveira. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. 2019. 1 recurso online (233 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/333407>. Acesso em: 15 mar. 2019. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/333407.

MLA Handbook (7^th Edition):

Pires, Marcela Miranda de Oliveira, 1984-. “Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base.” 2019. Web. 13 Apr 2021.

Vancouver:

Pires, Marcela Miranda de Oliveira 1. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. [Internet] [Masters thesis]. Universidade Estadual de Campinas; 2019. [cited 2021 Apr 13]. Available from: PIRES, Marcela Miranda de Oliveira. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. 2019. 1 recurso online (233 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/333407>. Acesso em: 15 mar. 2019. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/333407.

Council of Science Editors:

Pires, Marcela Miranda de Oliveira 1. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. [Masters Thesis]. Universidade Estadual de Campinas; 2019. Available from: PIRES, Marcela Miranda de Oliveira. Diretrizes para a melhoria dos sistemas e processos construtivos na implantação de estações rádio base. 2019. 1 recurso online (233 p.). Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Campinas, SP. Disponível em: <http://www.repositorio.unicamp.br/handle/REPOSIP/333407>. Acesso em: 15 mar. 2019. ; http://repositorio.unicamp.br/jspui/handle/REPOSIP/333407

Universiteit Utrecht

11. Beekhuizen, Johan. Determining the validity of exposure models for environmental epidemiology : predicting electromagnetic fields from mobile phone base stations.

Degree: 2014, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/301069

► One of the key challenges in environmental epidemiology is the exposure assessment of large populations. Spatial exposure models have been developed that predict exposure to… (more)

▼ One of the key challenges in environmental epidemiology is the exposure assessment of large populations. Spatial exposure models have been developed that predict exposure to the pollutant of interest for large study sizes. However, the validity of these exposure models is often unknown. In this thesis, we present various aspects that are important for quantifying the accuracy and uncertainty of model predictions. We focus on modelling radiofrequency electromagnetic fields (RF-EMF) from mobile phone base stations. Accurate positional information is essential for both model validation and model input, especially for exposures with high spatial variability such as RF-EMF. GPS-device are increasingly used to obtain positional information, but little is known about their performance for epidemiological studies. We assessed the outdoor accuracy of GPS-devices and found that GPS-errors were on average a few meters large, but over 14% of the errors were larger than 10 m. This potential displacement should be considered when using GPS-devices to obtain positional information. Next, the validity and uncertainty in RF-EMF exposure modelling with the radio wave propagation model NISMap was assessed. The outdoor performance was validated with repeated continuous measurements along predefined ~2 km long paths in five different areas, and the indoor performance with 15-minute spot measurements in 263 rooms in 101 primary schools and 30 private homes in Amsterdam, the Netherlands. We found a Spearman correlation between modelled and measured total downlink RF-EMF of 0.69 for outdoor, and 0.73 for indoor model predictions. The model was not able to accurately predict absolute RF-EMF levels, as model predictions were often a few factors off from measured values. As in many epidemiological studies not all input data are available, we compared models with various levels of input data detail with our outdoor measurement data set. Results showed that the model was able to rank exposure when 3D-building data and basic antenna information were available: Spearman correlations were generally larger than 0.6. The model performance was not sensitive to changes in building damping parameters. Antenna specific information about down-tilt, type and output power did not significantly improve model performance compared with using average down-tilt and power values, or assuming one standard antenna type. Exposure models are also dependent on the accuracy of the input data. With Monte Carlo simulation we assessed the effect of input uncertainty on modelled RF-EMF. The uncertainty was large with a median coefficient of variation of 1.5. The largest uncertainties in model output came from those inputs that influence whether there is an unblocked line-of-sight between antenna and receptor site: the antenna location, building height and receptor site x, y, z location. Epidemiologists should be aware of uncertainty in the prediction of exposure models. By quantifying the accuracy and uncertainty of the exposure model predictions, both the potential and… Advisors/Committee Members: Kromhout, Hans, Vermeulen, Roel, Huss, Anke.

Subjects/Keywords: validation; uncertainty; spatial modelling; radiofrequency; electromagnetic fields; accuracy; base station

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Beekhuizen, J. (2014). Determining the validity of exposure models for environmental epidemiology : predicting electromagnetic fields from mobile phone base stations. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/301069

Chicago Manual of Style (16^th Edition):

Beekhuizen, Johan. “Determining the validity of exposure models for environmental epidemiology : predicting electromagnetic fields from mobile phone base stations.” 2014. Doctoral Dissertation, Universiteit Utrecht. Accessed April 13, 2021. http://dspace.library.uu.nl:8080/handle/1874/301069.

MLA Handbook (7^th Edition):

Beekhuizen, Johan. “Determining the validity of exposure models for environmental epidemiology : predicting electromagnetic fields from mobile phone base stations.” 2014. Web. 13 Apr 2021.

Vancouver:

Beekhuizen J. Determining the validity of exposure models for environmental epidemiology : predicting electromagnetic fields from mobile phone base stations. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2014. [cited 2021 Apr 13]. Available from: http://dspace.library.uu.nl:8080/handle/1874/301069.

Council of Science Editors:

Beekhuizen J. Determining the validity of exposure models for environmental epidemiology : predicting electromagnetic fields from mobile phone base stations. [Doctoral Dissertation]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/301069

Anna University

12. Shankar T. Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection;.

Degree: Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/39869

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newlineRecent advances in wireless communications and electronics have newlineenabled the development of low cost low power multifunctional sensor nodes newlinethat are small in size and… (more)

Subjects/Keywords: Central Base Station; Cluster Head; Wireless Sensor Network

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

T, S. (2015). Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/39869

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

T, Shankar. “Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection;.” 2015. Thesis, Anna University. Accessed April 13, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/39869.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

T, Shankar. “Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection;.” 2015. Web. 13 Apr 2021.

Vancouver:

T S. Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Apr 13]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/39869.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

T S. Life time improvement in WSN using Meta heuristic algorithms Forcluster head selection;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/39869

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Univerzitet u Beogradu

13. Jovanović, Predrag N., 1985-. Симулациони модел за процену излазне снаге gsm базне станице.

Degree: Elektrotehnički fakultet, 2016, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:11660/bdef:Content/get

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Електротехника и рачунарство - Телекомуникације / Electrical Engineering and Computer Science - Telecommunication

У оквиру докторске дисертација представљени су теоријски поступци који омогућују врло прецизно… (more)

Subjects/Keywords: Base station output power estimation; energy efficiency; computer simulation; telecommunication networks

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APA (6^th Edition):

Jovanović, Predrag N., 1. (2016). Симулациони модел за процену излазне снаге gsm базне станице. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:11660/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jovanović, Predrag N., 1985-. “Симулациони модел за процену излазне снаге gsm базне станице.” 2016. Thesis, Univerzitet u Beogradu. Accessed April 13, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:11660/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jovanović, Predrag N., 1985-. “Симулациони модел за процену излазне снаге gsm базне станице.” 2016. Web. 13 Apr 2021.

Vancouver:

Jovanović, Predrag N. 1. Симулациони модел за процену излазне снаге gsm базне станице. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Apr 13]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:11660/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jovanović, Predrag N. 1. Симулациони модел за процену излазне снаге gsm базне станице. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:11660/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Linköping University

14. Hao, Zhong. Augmented Reality On Radio Base Station Maintenance.

Degree: Media and Information Technology, 2012, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84479

► Radio base station(RBS) is the key infrastructure in wireless network and the main product of Ericsson. To improve the efficiency and success rate of… (more)

Subjects/Keywords: Augmented Reality; Radio Base Station; Computer Sciences; Datavetenskap (datalogi)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hao, Z. (2012). Augmented Reality On Radio Base Station Maintenance. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84479

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hao, Zhong. “Augmented Reality On Radio Base Station Maintenance.” 2012. Thesis, Linköping University. Accessed April 13, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84479.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hao, Zhong. “Augmented Reality On Radio Base Station Maintenance.” 2012. Web. 13 Apr 2021.

Vancouver:

Hao Z. Augmented Reality On Radio Base Station Maintenance. [Internet] [Thesis]. Linköping University; 2012. [cited 2021 Apr 13]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84479.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hao Z. Augmented Reality On Radio Base Station Maintenance. [Thesis]. Linköping University; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84479

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

15. Guan, P. (author). Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:05949c30-bd1f-475b-8c1f-b6acae3e0764

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The emphasis of this thesis work is placed on improving cell-edge multi-user performance in 3GPP LTE-Advanced networks by utilizing relaying and base station coordination technologies.… (more)

Subjects/Keywords: multi-user; relay; base station coordination; LTE-Advanced

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Guan, P. (. (2011). Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:05949c30-bd1f-475b-8c1f-b6acae3e0764

Chicago Manual of Style (16^th Edition):

Guan, P (author). “Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks.” 2011. Masters Thesis, Delft University of Technology. Accessed April 13, 2021. http://resolver.tudelft.nl/uuid:05949c30-bd1f-475b-8c1f-b6acae3e0764.

MLA Handbook (7^th Edition):

Guan, P (author). “Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks.” 2011. Web. 13 Apr 2021.

Vancouver:

Guan P(. Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Apr 13]. Available from: http://resolver.tudelft.nl/uuid:05949c30-bd1f-475b-8c1f-b6acae3e0764.

Council of Science Editors:

Guan P(. Combining relaying and base station coordination for improving cell-edge multi-user performance in 3GPP LTE-Advanced networks. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:05949c30-bd1f-475b-8c1f-b6acae3e0764

Delft University of Technology

16. Wu, B. (author). Highly linear LNA design for base station applications.

Degree: 2010, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:e8f1af3e-d059-4d4d-bd91-5e5f600dac20

►

As the first stage of the amplifier chain aiming for the base station applications, a highly linear low noise amplifier (LNA) dictates very high performance… (more)

▼

As the first stage of the amplifier chain aiming for the base station applications, a highly linear low noise amplifier (LNA) dictates very high performance for optimum coverage with a best signal quality. In today’s commercial market, the GaAs enhancement-mode pHEMT based LNA is dominant. However, a SiGe-based LNA, due to its high integration, is still attracting the interest from industry. In this thesis, the highly linear SiGe-based LNA design procedure is presented. For the fully-differential LNA design, the base tuning and emitter tuning, which both belong to the out-of-band matching technique used to increase linearity, are analyzed in details. Although the base tuning suffers more from mismatches in comparison with the emitter tuning, it is proved that proper choice of the harmonic trap capacitor is able to mitigate this effect, which can trigger a higher linearity. For the single-ended LNA design, the out-of-band matching is still feasible for narrow band applications. A compact topology of highly linear low noise amplifier which is composed of an emitter inductive degeneration and out-of-band matching core is proposed. Moreover, a modified neutralization function block based on on-chip transformer and bondwire inductor is also proposed. For this configuration, simultaneous noise/input matching, linearity improvement and a good reverse isolation is able to be achieved. It proved effective and convenient for a packaged monolithic RF chip. However, most input-referred linearity optimization techniques focused on the harmonic termination design at the input part, which leads to a narrower bandwidth and a higher noise figure due to extra losses in practice. To avoid these issues, an innovative linearity improvement method based on optimizing the output load is proposed. A novel two-stage highly linear LNA is designed to validate this theory. It achieved a power gain of 29dB and noise figure of 0.7dB at 1.7GHz, while only consumed 41mA from 3.3V supply. The OIP3 can be better than 38dBm from 1.2GHz to 2GHz. The input-referred 1dB compression point is -5dBm. The simulated result is the state-of-the-art among the current existing SiGe-based LNAs for base station applications. The design, as a part of a highly linear monolithic RF receiver, has been carried out using NXP QUBiC4x BiCMOS technology.

Microelectronics

Microelectronics & Computer Engineering

Electrical Engineering, Mathematics and Computer Science

Advisors/Committee Members: De Vreede, L.C.N. (mentor), Mattheijssen, P. (mentor).

Subjects/Keywords: LNA; high linearity; base station

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wu, B. (. (2010). Highly linear LNA design for base station applications. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e8f1af3e-d059-4d4d-bd91-5e5f600dac20

Chicago Manual of Style (16^th Edition):

Wu, B (author). “Highly linear LNA design for base station applications.” 2010. Masters Thesis, Delft University of Technology. Accessed April 13, 2021. http://resolver.tudelft.nl/uuid:e8f1af3e-d059-4d4d-bd91-5e5f600dac20.

MLA Handbook (7^th Edition):

Wu, B (author). “Highly linear LNA design for base station applications.” 2010. Web. 13 Apr 2021.

Vancouver:

Wu B(. Highly linear LNA design for base station applications. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2021 Apr 13]. Available from: http://resolver.tudelft.nl/uuid:e8f1af3e-d059-4d4d-bd91-5e5f600dac20.

Council of Science Editors:

Wu B(. Highly linear LNA design for base station applications. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:e8f1af3e-d059-4d4d-bd91-5e5f600dac20

Delft University of Technology

17. Wu, B. (author). Highly Linear LNA Design for Base Station Applications.

Degree: 2010, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:9cb25a9a-0d17-48c7-842c-3ef83ed044e5

►

As the first stage of the amplifier chain aiming for the base station applications, a highly linear low noise amplifier (LNA) dictates very high performance… (more)

▼

As the first stage of the amplifier chain aiming for the base station applications, a highly linear low noise amplifier (LNA) dictates very high performance for optimum coverage with a best signal quality. In today’s commercial market, the GaAs enhancement-mode pHEMT based LNA is dominant. However, a SiGe-based LNA, due to its high integration, is still attracting the interest from industry. In this thesis, the highly linear SiGe-based LNA design procedure is presented. For the fully-differential LNA design, the base tuning and emitter tuning, which both belong to the out-of-band matching technique used to increase linearity, are analyzed in details. Although the base tuning suffers more from mismatches in comparison with the emitter tuning, it is proved that proper choice of the harmonic trap capacitor is able to mitigate this effect, which can trigger a higher linearity. For the single-ended LNA design, the out-of-band matching is still feasible for narrow band applications. A compact topology of highly linear low noise amplifier which is composed of an emitter inductive degeneration and out-of-band matching core is proposed. Moreover, a modified neutralization function block based on on-chip transformer and bondwire inductor is also proposed. For this configuration, simultaneous noise/input matching, linearity improvement and a good reverse isolation is able to be achieved. It proved effective and convenient for a packaged monolithic RF chip. However, most input-referred linearity optimization techniques focused on the harmonic termination design at the input part, which leads to a narrower bandwidth and a higher noise figure due to extra losses in practice. To avoid these issues, an innovative linearity improvement method based on optimizing the output load is proposed. A novel two-stage highly linear LNA is designed to validate this theory. It achieved a power gain of 29dB and noise figure of 0.7dB at 1.7GHz, while only consumed 41mA from 3.3V supply. The OIP3 can be better than 38dBm from 1.2GHz to 2GHz. The input-referred 1dB compression point is -5dBm. The simulated result is the state-of-the-art among the current existing SiGe-based LNAs for base station applications. The design, as a part of a highly linear monolithic RF receiver, has been carried out using NXP QUBiC4x BiCMOS technology.

Microelectronics & Computer Engineering

Electrical Engineering, Mathematics and Computer Science

Advisors/Committee Members: De Vreede, L.C.N. (mentor), Mattheijssen, P. (mentor).

Subjects/Keywords: LNA; base station; high linearity

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wu, B. (. (2010). Highly Linear LNA Design for Base Station Applications. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:9cb25a9a-0d17-48c7-842c-3ef83ed044e5

Chicago Manual of Style (16^th Edition):

Wu, B (author). “Highly Linear LNA Design for Base Station Applications.” 2010. Masters Thesis, Delft University of Technology. Accessed April 13, 2021. http://resolver.tudelft.nl/uuid:9cb25a9a-0d17-48c7-842c-3ef83ed044e5.

MLA Handbook (7^th Edition):

Wu, B (author). “Highly Linear LNA Design for Base Station Applications.” 2010. Web. 13 Apr 2021.

Vancouver:

Wu B(. Highly Linear LNA Design for Base Station Applications. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2021 Apr 13]. Available from: http://resolver.tudelft.nl/uuid:9cb25a9a-0d17-48c7-842c-3ef83ed044e5.

Council of Science Editors:

Wu B(. Highly Linear LNA Design for Base Station Applications. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:9cb25a9a-0d17-48c7-842c-3ef83ed044e5

University of Notre Dame

18. Gaurav Nigam. Base Station Cooperation in Downlink Heterogeneous Cellular Networks</h1>.

Degree: Electrical Engineering, 2015, University of Notre Dame

URL: https://curate.nd.edu/show/fx719k44380

► Increasing coverage of cell-corner users is one of the essential requirements to improve the performance of current cellular systems. Unlike the typical network user,… (more)

▼ Increasing coverage of cell-corner users is one of the essential requirements to improve the performance of current cellular systems. Unlike the typical network user, a user located at the cell boundary suffers from severe inter-cell interference, a problem which is aggravated by the deployment of small cells in heterogeneous networks. To address this issue, inter/intra-cell base station cooperation has been proposed in wireless standards as a technique to limit the amount of inter-cell interference and hence improve coverage. Motivated by this ongoing debate in standard settings, this thesis presents a stochastic geometry model to study base station cooperation in heterogeneous cellular networks. Within this model, base stations are assumed to be randomly located on a plane according to a Poisson point process, such that the so-called coverage probability, i.e., the probability that the signal-to-interference ratio at the designated receiver exceeds a desired threshold value, can be analytically characterized as a function of the network parameters. In contrast, traditional models either ignore the presence of interferes or make approximate models for the aggregate interference power distribution. Unlike any other work in the literature, the proposed model allows base stations and receivers to be equipped with multiple antennas. Specific cooperation schemes that are considered include joint transmission, base station silencing, cooperative re-transmission, and a distributed version of the well-known Alamouti space-time code. For each of these schemes, integral expressions for the coverage probability are characterized for both the typical network user and the typical cell-corner user. The expressions derived are used to quantify the relative coverage gain due to cooperation at the typical cell-corner user vs the typical network user. At a high level, the theoretical analysis reveals the existence of two qualitatively different operating regimes, depending on whether the coverage probability is close to 1 or 0. In the high-coverage regime where the coverage probability is close to 1, the typical network user and the typical cell-corner user are diversity-limited, so cooperation techniques exploiting spatiotemporal diversity such as the Alamouti code or cooperative re-transmission are highly effective in increasing coverage. In the low-coverage regime where the coverage probability is close to 0, on the other hand, the typical network user and the typical cell-corner user are interference-limited, so cooperation techniques such as joint transmission and base station silencing are effective in increasing coverage as they suppress part of the interference power. Advisors/Committee Members: Martin Haenggi, Committee Member, Thomas Fuja, Committee Member, J Nicholas Laneman, Committee Member, Paolo Minero, Committee Chair.

Subjects/Keywords: Stochastic Geometry; Coverage Probability; Heterogeneous Networks; Diversity Gain; Base Station Cooperation

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APA (6^th Edition):

Nigam, G. (2015). Base Station Cooperation in Downlink Heterogeneous Cellular Networks</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/fx719k44380

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nigam, Gaurav. “Base Station Cooperation in Downlink Heterogeneous Cellular Networks</h1>.” 2015. Thesis, University of Notre Dame. Accessed April 13, 2021. https://curate.nd.edu/show/fx719k44380.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nigam, Gaurav. “Base Station Cooperation in Downlink Heterogeneous Cellular Networks</h1>.” 2015. Web. 13 Apr 2021.

Vancouver:

Nigam G. Base Station Cooperation in Downlink Heterogeneous Cellular Networks</h1>. [Internet] [Thesis]. University of Notre Dame; 2015. [cited 2021 Apr 13]. Available from: https://curate.nd.edu/show/fx719k44380.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nigam G. Base Station Cooperation in Downlink Heterogeneous Cellular Networks</h1>. [Thesis]. University of Notre Dame; 2015. Available from: https://curate.nd.edu/show/fx719k44380

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ontario Institute of Technology

19. Yu, Jiawei. Low complexity multicast beamforming in massive MIMO multi-cell networks.

Degree: 2018, University of Ontario Institute of Technology

URL: http://hdl.handle.net/10155/957

► In this thesis, we consider downlink multicast beamforming in massive multi-input multi- output (MIMO) multi-cell networks. Both non-cooperative and cooperative beamforming scenarios are considered. For… (more)

Subjects/Keywords: Multicast beamforming; Massive MIMO; Multi-cell coordination; Base station cooperation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yu, J. (2018). Low complexity multicast beamforming in massive MIMO multi-cell networks. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/957

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yu, Jiawei. “Low complexity multicast beamforming in massive MIMO multi-cell networks.” 2018. Thesis, University of Ontario Institute of Technology. Accessed April 13, 2021. http://hdl.handle.net/10155/957.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yu, Jiawei. “Low complexity multicast beamforming in massive MIMO multi-cell networks.” 2018. Web. 13 Apr 2021.

Vancouver:

Yu J. Low complexity multicast beamforming in massive MIMO multi-cell networks. [Internet] [Thesis]. University of Ontario Institute of Technology; 2018. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10155/957.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yu J. Low complexity multicast beamforming in massive MIMO multi-cell networks. [Thesis]. University of Ontario Institute of Technology; 2018. Available from: http://hdl.handle.net/10155/957

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

RMIT University

20. Ghosh, A. Congestion mitigation in LTE base stations using radio resource allocation techniques with TCP end to end transport.

Degree: 2019, RMIT University

URL: http://researchbank.rmit.edu.au/view/rmit:163014

► As of 2019, Long Term Evolution (LTE) is the chosen standard for most mobile and fixed wireless data communication. The next generation of standards known… (more)

▼ As of 2019, Long Term Evolution (LTE) is the chosen standard for most mobile and fixed wireless data communication. The next generation of standards known as 5G will encompass the Internet of Things (IoT) which will add more wireless devices to the network. Due to an exponential increase in the number of wireless subscriptions, in the next few years there is also an expected exponential increase in data traffic. Most of these devices will use Transmission Control Protocol (TCP) which is a type of network protocol for delivering internet data to users. Due to its reliability in delivering data payload to users and congestion management, TCP is the most common type of network protocol used. However, the ability for TCP to combat network congestion has certain limitations especially in a wireless network. This is due to wireless networks not being as reliable as fixed line networks for data delivery because of the use of last mile radio interface. LTE uses various error correction techniques for reliable data delivery over the air-interface. These cause other issues such as excessive latency and queuing in the base station leading to degradation in throughput for users and congestion in the network. Traditional methods of dealing with congestion such as tail-drop can be inefficient and cumbersome. Therefore, adequate congestion mitigation mechanisms are required. The LTE standard uses a technique to pre-empt network congestion by a mechanism known as Discard Timer. Additionally, there are other algorithms such as Random Early Detection (RED) that also are used for network congestion mitigation. However, these mechanisms rely on configured parameters and only work well within certain regions of operation. If the parameters are not set correctly then the TCP links can experience congestion collapse. In this thesis, the limitations of using existing LTE congestion mitigation mechanisms such as Discard Timer and RED have been explored. A different mechanism to analyse the effects of using control theory for congestion mitigation has been developed. Finally, congestion mitigation in LTE networks has been addresses using radio resource allocation techniques with non-cooperative game theory being an underlying mathematical framework. In doing so, two key end-to-end performance measurements considered for measuring congestion for the game theoretic models were identified which were the total end-to-end delay and the overall throughput of each individual TCP link. An end to end wireless simulator model with the radio access network using LTE and a TCP based backbone to the end server was developed using MATLAB. This simulator was used as a baseline for testing each of the congestion mitigation mechanisms. This thesis also provides a comparison and performance evaluation between the congestion mitigation models developed using existing techniques (such as Discard Timer and RED), control theory and game theory. As of 2019, Long Term Evolution (LTE) is the chosen standard for most mobile and fixed wireless data communication. The…

Subjects/Keywords: Fields of Research; LTE; TCP; Game Theory; Congestion; Base Station

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ghosh, A. (2019). Congestion mitigation in LTE base stations using radio resource allocation techniques with TCP end to end transport. (Thesis). RMIT University. Retrieved from http://researchbank.rmit.edu.au/view/rmit:163014

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ghosh, A. “Congestion mitigation in LTE base stations using radio resource allocation techniques with TCP end to end transport.” 2019. Thesis, RMIT University. Accessed April 13, 2021. http://researchbank.rmit.edu.au/view/rmit:163014.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ghosh, A. “Congestion mitigation in LTE base stations using radio resource allocation techniques with TCP end to end transport.” 2019. Web. 13 Apr 2021.

Vancouver:

Ghosh A. Congestion mitigation in LTE base stations using radio resource allocation techniques with TCP end to end transport. [Internet] [Thesis]. RMIT University; 2019. [cited 2021 Apr 13]. Available from: http://researchbank.rmit.edu.au/view/rmit:163014.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ghosh A. Congestion mitigation in LTE base stations using radio resource allocation techniques with TCP end to end transport. [Thesis]. RMIT University; 2019. Available from: http://researchbank.rmit.edu.au/view/rmit:163014

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

21. Helgegren, Rikard. Capturing the Base Station by Feature Engineering .

Degree: Chalmers tekniska högskola / Institutionen för matematiska vetenskaper, 2020, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/301345

► A feature vector is a compact representation of an object or system, that contains the most important or informative aspects of the entity. A feature… (more)

Subjects/Keywords: Feature vector; Visualisation; Clustering; Evaluation metrics; Base station.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Helgegren, R. (2020). Capturing the Base Station by Feature Engineering . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/301345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Helgegren, Rikard. “Capturing the Base Station by Feature Engineering .” 2020. Thesis, Chalmers University of Technology. Accessed April 13, 2021. http://hdl.handle.net/20.500.12380/301345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Helgegren, Rikard. “Capturing the Base Station by Feature Engineering .” 2020. Web. 13 Apr 2021.

Vancouver:

Helgegren R. Capturing the Base Station by Feature Engineering . [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/20.500.12380/301345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Helgegren R. Capturing the Base Station by Feature Engineering . [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/301345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Sydney

22. Qian, Manli. Research on key technologies of multi-dimensional resource cooperative allocation for a super base station system .

Degree: 2013, University of Sydney

URL: http://hdl.handle.net/2123/11452

► To meet the ever increasing demand for high wireless transmission data rates, more and more base stations (BSs) need to be deployed in current cell-centric… (more)

Subjects/Keywords: Super base station; Radio resource; Computing resource; Cooperative allocation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Qian, M. (2013). Research on key technologies of multi-dimensional resource cooperative allocation for a super base station system . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/11452

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Qian, Manli. “Research on key technologies of multi-dimensional resource cooperative allocation for a super base station system .” 2013. Thesis, University of Sydney. Accessed April 13, 2021. http://hdl.handle.net/2123/11452.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Qian, Manli. “Research on key technologies of multi-dimensional resource cooperative allocation for a super base station system .” 2013. Web. 13 Apr 2021.

Vancouver:

Qian M. Research on key technologies of multi-dimensional resource cooperative allocation for a super base station system . [Internet] [Thesis]. University of Sydney; 2013. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2123/11452.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Qian M. Research on key technologies of multi-dimensional resource cooperative allocation for a super base station system . [Thesis]. University of Sydney; 2013. Available from: http://hdl.handle.net/2123/11452

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

23. Ghazzai, Hakim. Environment Aware Cellular Networks.

Degree: Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, 2015, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/344436

► The unprecedented rise of mobile user demand over the years have led to an enormous growth of the energy consumption of wireless networks as well… (more)

▼ The unprecedented rise of mobile user demand over the years have led to an enormous growth of the energy consumption of wireless networks as well as the greenhouse gas emissions which are estimated currently to be around 70 million tons per year. This significant growth of energy consumption impels network companies to pay huge bills which represent around half of their operating expenditures. Therefore, many service providers, including mobile operators, are looking for new and modern green solutions to help reduce their expenses as well as the level of their CO2 emissions. Base stations are the most power greedy element in cellular networks: they drain around 80% of the total network energy consumption even during low traffic periods. Thus, there is a growing need to develop more energy-efficient techniques to enhance the green performance of future 4G/5G cellular networks. Due to the problem of traffic load fluctuations in cellular networks during different periods of the day and between different areas (shopping or business districts and residential areas), the base station sleeping strategy has been one of the main popular research topics in green communications. In this presentation, we present several practical green techniques that provide significant gains for mobile operators. Indeed, combined with the base station sleeping strategy, these techniques achieve not only a minimization of the fossil fuel consumption but also an enhancement of mobile operator profits. We start with an optimized cell planning method that considers varying spatial and temporal user densities. We then use the optimal transport theory in order to define the cell boundaries such that the network total transmit power is reduced. Afterwards, we exploit the features of the modern electrical grid, the smart grid, as a new tool of power management for cellular networks and we optimize the energy procurement from multiple energy retailers characterized by different prices and pollutant levels in order to achieve green goals. Finally, we introduce the notion of green mobile operator collaboration as a new aspect of the green networking where competitive cellular companies might cooperate together in order to achieve green goals. Advisors/Committee Members: Alouini, Mohamed-Slim (advisor), Shamma, Jeff S. (committee member), Tempone, Raul (committee member), Sultan, Ahmed (committee member), Yanikomeroglu, Halim (committee member).

Subjects/Keywords: Cellular Networks; Green Networking; Smart Grid; Base Station; Sleeping Strategy

4 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ghazzai, H. (2015). Environment Aware Cellular Networks. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/344436

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ghazzai, Hakim. “Environment Aware Cellular Networks.” 2015. Thesis, King Abdullah University of Science and Technology. Accessed April 13, 2021. http://hdl.handle.net/10754/344436.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ghazzai, Hakim. “Environment Aware Cellular Networks.” 2015. Web. 13 Apr 2021.

Vancouver:

Ghazzai H. Environment Aware Cellular Networks. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2015. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10754/344436.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ghazzai H. Environment Aware Cellular Networks. [Thesis]. King Abdullah University of Science and Technology; 2015. Available from: http://hdl.handle.net/10754/344436

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Unitec New Zealand

24. Dinglasan, Raphael. Into the ice : exploring an architectural identity in Antarctica.

Degree: 2018, Unitec New Zealand

URL: http://hdl.handle.net/10652/4473

► RESEARCH QUESTION: How might Antarctica’s natural environment define a possible contemporary architectural identity? This research project seeks to discover the possible architectural identity of Antarctica;… (more)

Subjects/Keywords: Scott Base (Antarctica); New Zealand Antarctic research station; architecture and nature; research station design; 120101 Architectural Design

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APA (6^th Edition):

Dinglasan, R. (2018). Into the ice : exploring an architectural identity in Antarctica. (Thesis). Unitec New Zealand. Retrieved from http://hdl.handle.net/10652/4473

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dinglasan, Raphael. “Into the ice : exploring an architectural identity in Antarctica.” 2018. Thesis, Unitec New Zealand. Accessed April 13, 2021. http://hdl.handle.net/10652/4473.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dinglasan, Raphael. “Into the ice : exploring an architectural identity in Antarctica.” 2018. Web. 13 Apr 2021.

Vancouver:

Dinglasan R. Into the ice : exploring an architectural identity in Antarctica. [Internet] [Thesis]. Unitec New Zealand; 2018. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/10652/4473.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dinglasan R. Into the ice : exploring an architectural identity in Antarctica. [Thesis]. Unitec New Zealand; 2018. Available from: http://hdl.handle.net/10652/4473

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

25. Eduardo Campos Pereira. Spatial distribution of radio base stations at Fortaleza.

Degree: 2015, Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em LogÃstica e Pesquisa Operacional; UFC; BR

URL: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15691

►

CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior

The growing demand for mobile telephony services and the advent of new technologies requires their continued expansion,… (more)

▼

CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior

The growing demand for mobile telephony services and the advent of new technologies requires their continued expansion, in order to ensure safe, reliable and high quality to its users. As a direct consequence of this growth has been the need to increase the amount of Radio Base Stations (RBS) to be installed. This expansion may have visual impacts and damage to the health of the population in the surrounding areas of the base stations, seeking always the best practices for the deployment of base stations. This model is based on policies that allow for expansion of services of mobile networks and, at the same time reduce the visual impact of these facilities as well as damage to the health of the surrounding area of the population, in a complementary manner to the applicable legislation. This concern is motivated by the loss of quality of service presented by the mobile operators, due especially to the poor distribution of antenna signal distributors. The objective of this work is to make a diagnosis of the spatial distribution of Radio Base Stations in the city of Fortaleza, focusing on its normative aspects and the current management system and supervision of those cell sites. The technical and regulatory aspects of installations of base stations used in mobile telephony will be searched, focusing the case study in Fortaleza, in addition to identifying the public agencies responsible for managing the inspection of cell sites in this municipality, and establish their respective responsibilities. For this, the methodology used in the study is based on qualitative exploratory research, using the deductive method of approach, performing literature, through the consultation of books, periodicals, theses, dissertations and legislation available on mobile telephony in Brazil and world, its normative aspects and criteria for installation of base stations. Also we used a field survey, through structured interviews managers of public agencies responsible for the management and supervision of RBS. The study showed that Fortaleza has 843 base stations registered by ANATEL (2014), with 6.8 million active mobile lines. Research by the SEUMA showed, among other aspects, despite the demands of municipal law in 8914, supervising or is done randomly, or from accusations of \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"disagreement\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\m̈ade by the people and that the body responsible not talk to one itself.

A crescente demanda pelos serviÃos mÃveis de telefonia e o advento de novas tecnologias exige sua contÃnua expansÃo, de modo a garantir serviÃos seguros, confiÃveis e de elevada qualidade aos seus usuÃrios. Como consequÃncia direta dessa expansÃo tem-se a necessidade do aumento na quantidade de EstaÃÃes RÃdio Base (ERB) a serem instaladas. Essa expansÃo pode apresentar impactos visuais e danos Ã saÃde da populaÃÃo nas Ãreas de entorno das ERBs, buscando-se sempre as melhores prÃticas para a implantaÃÃo das ERBs. Esse modelo baseia-se em diretrizes que…

Advisors/Committee Members: SÃlvia Maria de Freitas, Marisete Dantas de Aquino, Adeildo Cabral da Silva, JoÃo Welliandre Carneiro Alexandre.

Subjects/Keywords: EstaÃÃo rÃdio base; DistribuiÃÃo espacial; Telefonia mÃvel; Aspectos normativos; Radio base station; Space distribution; Mobile; Normative aspects; PESQUISA OPERACIONAL

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APA (6^th Edition):

Pereira, E. C. (2015). Spatial distribution of radio base stations at Fortaleza. (Masters Thesis). Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em LogÃstica e Pesquisa Operacional; UFC; BR. Retrieved from http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15691

Chicago Manual of Style (16^th Edition):

Pereira, Eduardo Campos. “Spatial distribution of radio base stations at Fortaleza.” 2015. Masters Thesis, Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em LogÃstica e Pesquisa Operacional; UFC; BR. Accessed April 13, 2021. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15691.

MLA Handbook (7^th Edition):

Pereira, Eduardo Campos. “Spatial distribution of radio base stations at Fortaleza.” 2015. Web. 13 Apr 2021.

Vancouver:

Pereira EC. Spatial distribution of radio base stations at Fortaleza. [Internet] [Masters thesis]. Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em LogÃstica e Pesquisa Operacional; UFC; BR; 2015. [cited 2021 Apr 13]. Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15691.

Council of Science Editors:

Pereira EC. Spatial distribution of radio base stations at Fortaleza. [Masters Thesis]. Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em LogÃstica e Pesquisa Operacional; UFC; BR; 2015. Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15691

26. Margarete Ponce Padueli. As estações rádio base na cidade de São Paulo: uma aboradagem sobre os riscos e uma contribuição para os sistemas de gerenciamento.

Degree: 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/90/90131/tde-28082012-101326/

►

O desenvolvimento da tecnologia de telecomunicação móvel ensejou a implantação massiva de ERBs (Estações rádio base) para o atendimento da crescente demanda ocorrida na última… (more)

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O desenvolvimento da tecnologia de telecomunicação móvel ensejou a implantação massiva de ERBs (Estações rádio base) para o atendimento da crescente demanda ocorrida na última década. As ERBs, por sua vez, constituem fontes emissoras de radiação não ionizante. Os estudos científicos concluídos nos últimos anos indicam que a exposição à radiação não ionizante, principalmente em longo prazo, pode produzir consequências negativas para a saúde humana, por essa razão, mister se faz a aplicação do Princípio da Precaução que vem evocar cautela diante do risco. Das principais normas existentes no planeta, nem todas adotaram o princípio da precaução ao fixar seus limites; em decorrência, a maioria das normas que determinam limites máximos de exposição teve como base apenas os efeitos biológicos danosos da exposição à radiação não ionizante já conhecidos pela comunidade científica e relacionados à exposição aguda. Dessa maneira, diante do risco resultante da exposição, surge outra questão de grande importância o gerenciamento dessas ERBs. Haveria, na cidade de São Paulo, um sistema de gerenciamento das ERBs que garanta o cumprimento dos limites e padrões definidos na legislação local? Nesse cenário, este estudo pretende: (i) elaborar um levantamento junto aos três órgãos públicos responsáveis pelo gerenciamento das ERBs na cidade de São Paulo, sobre o atual estágio dos sistemas de gerenciamento praticado por cada entidade pública legalmente competente para o respectivo exercício; (ii) desenvolver uma análise das características básicas dos sistemas de gerenciamento das ERBs no município de São Paulo, estudando a evolução ocorrida entre os anos de 2006 e 2011; e, (iii) avaliar as possibilidades de melhoria na proposta atual de gerenciamento das ERBs, no município de São Paulo. Esta pesquisa parte dos dados levantados no ano de 2006, na cidade de São Paulo, que na ocasião indicaram a existência de um sistema de gerenciamento das ERBs incipiente e frágil por parte dos órgãos públicos competentes (Secretaria Estadual da Saúde, Secretaria Municipal do Verde e Meio Ambiente e ANATEL). A partir deste cenário, elabora-se uma análise das características básicas dos sistemas de gerenciamento das ERBs no município de São Paulo, estudando a evolução ocorrida entre os anos de 2006 e 2011. Dessa avaliação, são identificadas falhas e possibilidades de melhoria nos sistemas de gerenciamento das ERBs praticados no município de São Paulo na atualidade. A metodologia adotada constitui-se de pesquisa de campo, por meio de entrevista estruturada, aplicada aos representantes dos órgãos públicos responsáveis pelo gerenciamento das ERBs no município de São Paulo. Finalmente, é desenvolvida a interpretação dos dados, global e individualmente, de forma que os resultados obtidos possibilitaram as considerações e propostas formuladas no capítulo conclusivo desta pesquisa.

The development of mobile telecommunication technology gave rise to the massive deployment of RBSs (Radio base stations) to attend the growing demand occurred in…

Advisors/Committee Members: Nelson da Cruz Gouveia, Vitor Baranauskas, Fernando Cardozo Fernandes Rei, Helena Ribeiro, Alvaro Augusto Almeida de Salles.

Subjects/Keywords: campo eletromagnético; estação rádio base; Radiação não ionizante; sistemas de gerenciamento; electromagnetic field; management systems.; Non-ionizing radiation; radio base station

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Padueli, M. P. (2012). As estações rádio base na cidade de São Paulo: uma aboradagem sobre os riscos e uma contribuição para os sistemas de gerenciamento. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/90/90131/tde-28082012-101326/

Chicago Manual of Style (16^th Edition):

Padueli, Margarete Ponce. “As estações rádio base na cidade de São Paulo: uma aboradagem sobre os riscos e uma contribuição para os sistemas de gerenciamento.” 2012. Doctoral Dissertation, University of São Paulo. Accessed April 13, 2021. http://www.teses.usp.br/teses/disponiveis/90/90131/tde-28082012-101326/.

MLA Handbook (7^th Edition):

Padueli, Margarete Ponce. “As estações rádio base na cidade de São Paulo: uma aboradagem sobre os riscos e uma contribuição para os sistemas de gerenciamento.” 2012. Web. 13 Apr 2021.

Vancouver:

Padueli MP. As estações rádio base na cidade de São Paulo: uma aboradagem sobre os riscos e uma contribuição para os sistemas de gerenciamento. [Internet] [Doctoral dissertation]. University of São Paulo; 2012. [cited 2021 Apr 13]. Available from: http://www.teses.usp.br/teses/disponiveis/90/90131/tde-28082012-101326/.

Council of Science Editors:

Padueli MP. As estações rádio base na cidade de São Paulo: uma aboradagem sobre os riscos e uma contribuição para os sistemas de gerenciamento. [Doctoral Dissertation]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/90/90131/tde-28082012-101326/

27. Duteil, Gilles. Localisation, caractérisation et modélisation de sources d'intermodulation passive : application aux antennes pour les réseaux radio-mobiles : Localization, characterization and modeling of passive intermodulation sources : application to antennas for radio-mobile networks.

Degree: Docteur es, Télécommunications, 2018, Rennes 1

URL: http://www.theses.fr/2018REN1S118

►

L'évolution des télécommunications a fait des produits d'intermodulation passive (PIM) un critère de qualité et de performance du réseau mais également un problème de premier… (more)

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L'évolution des télécommunications a fait des produits d'intermodulation passive (PIM) un critère de qualité et de performance du réseau mais également un problème de premier ordre pour les fournisseurs de services comme par exemple les opérateurs de téléphonie mobile. Les travaux présentés dans ce manuscrit constituent une contribution à la résolution d'une partie des problèmes de PIM dans les antennes de station de base et s'articulent autour de trois axes principaux : - la caractérisation des sources d'intermodulation passive au sein des antennes de station de base. De nombreuses études expérimentales ont été réalisées avec l'objectif de déterminer l'influence de différents paramètres sur la PIM générée par les contacts métal-métal (rugosité des surfaces, utilisation de traitement de surface, géométrie et nature des métaux) ou par les circuits imprimés de type micro-ruban (adaptation, largeur de ligne et épaisseur du substrat diélectrique). Les résultats de ces études ont permis d'améliorer les connaissances théoriques et de définir des règles permettant de réduire les niveaux de PIM induits ; - la localisation des sources d'intermodulation passive au sein de systèmes radiofréquences complexes. Pour cela, un banc de mesure PIM spécifique a été conçu. Celui-ci permet de localiser des sources de PIM, de niveau proche de la spécification 3GPP, avec une précision inférieure à 2cm. De plus, pour faciliter la détection des défauts PIM dans une antenne de station de base, différentes méthodes complémentaires ont été développées et associées à ce banc de mesure ; - la modélisation, à partir des résultats des études expérimentales réalisées, de composants non-linéaires intégrables à un simulateur de type circuit. L'utilisation de ces derniers permet aux ingénieurs d'estimer, dès la phase de conception, le comportement PIM des contacts métal-métal et des circuits imprimés de type micro-ruban et tri-plaque suspendue.

The evolution of telecommunications has made passive intermodulation products (PIM) not only a criterion of quality and network performance but also a major problem for service providers such as mobile operators. The work presented in this manuscript is a contribution to the resolution of some of PIM problems in base station antennas and is organized around three main axes : - the characterization of passive intermodulation root causes within base station antennas. Numerous experimental studies have been carried out with the aim of determining the influence of different parameters on the PIM generated by metal-to-metal contacts (roughness of surfaces, use of surface treatment, geometry and nature of metals) or by printed circuits as microstrip type (matching, line width and thickness of dielectric substrate). The results of these studies contributed to improve theoretical knowledge and to define rules to reduce induced PIM levels ; - the localization of passive intermodulation root causes within complex radio frequency systems. For this, a specific PIM measurements bench has been designed. It allows locating…

Advisors/Committee Members: Colombel, Franck (thesis director).

Subjects/Keywords: Intermodulation passive; Antennes de station de base; Modélisation électromagnétique; Techniques de mesures; Analyse spectrale; Passive intermodulation; Base station antennas; Electromagnetic modeling; Measurement techniques; Spectral analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Duteil, G. (2018). Localisation, caractérisation et modélisation de sources d'intermodulation passive : application aux antennes pour les réseaux radio-mobiles : Localization, characterization and modeling of passive intermodulation sources : application to antennas for radio-mobile networks. (Doctoral Dissertation). Rennes 1. Retrieved from http://www.theses.fr/2018REN1S118

Chicago Manual of Style (16^th Edition):

Duteil, Gilles. “Localisation, caractérisation et modélisation de sources d'intermodulation passive : application aux antennes pour les réseaux radio-mobiles : Localization, characterization and modeling of passive intermodulation sources : application to antennas for radio-mobile networks.” 2018. Doctoral Dissertation, Rennes 1. Accessed April 13, 2021. http://www.theses.fr/2018REN1S118.

MLA Handbook (7^th Edition):

Duteil, Gilles. “Localisation, caractérisation et modélisation de sources d'intermodulation passive : application aux antennes pour les réseaux radio-mobiles : Localization, characterization and modeling of passive intermodulation sources : application to antennas for radio-mobile networks.” 2018. Web. 13 Apr 2021.

Vancouver:

Duteil G. Localisation, caractérisation et modélisation de sources d'intermodulation passive : application aux antennes pour les réseaux radio-mobiles : Localization, characterization and modeling of passive intermodulation sources : application to antennas for radio-mobile networks. [Internet] [Doctoral dissertation]. Rennes 1; 2018. [cited 2021 Apr 13]. Available from: http://www.theses.fr/2018REN1S118.

Council of Science Editors:

Duteil G. Localisation, caractérisation et modélisation de sources d'intermodulation passive : application aux antennes pour les réseaux radio-mobiles : Localization, characterization and modeling of passive intermodulation sources : application to antennas for radio-mobile networks. [Doctoral Dissertation]. Rennes 1; 2018. Available from: http://www.theses.fr/2018REN1S118

New Jersey Institute of Technology

28. Zhang, Liang. Communications with spectrum sharing in 5g networks via drone-mounted base stations.

Degree: PhD, Electrical and Computer Engineering, 2020, New Jersey Institute of Technology

URL: https://digitalcommons.njit.edu/dissertations/1468

► The fifth generation wireless network is designed to accommodate enormous traffic demands for the next decade and to satisfy varying quality of service for… (more)

▼ The fifth generation wireless network is designed to accommodate enormous traffic demands for the next decade and to satisfy varying quality of service for different users. Drone-mounted base stations (DBSs) characterized by high mobility and low cost intrinsic attributes can be deployed to enhance the network capacity. In-band full-duplex (IBFD) is a promising technology for future wireless communications that can potentially enhance the spectrum efficiency and the throughput capacity. Therefore, the following issues have been identified and investigated in this dissertation in order to achieve high spectrum efficiency and high user quality of service. First, the problem of deploying DBSs is studied. Deploying more DBSs may increase the total throughput of the network but at the expense of the operation cost. The droNe-mounted bAse station PlacEment (NAPE) problem with consideration of IBFD communications and DBS backhaul is then formulated. The objective is to minimize the number of deployed DBSs while maximizing the total throughput of the network by incorporating IBFD-enabled communications for both access links and backhaul links via DBSs as relay nodes. A heuristic algorithm is proposed to solve the NAPE problem, and its performance is evaluated via extensive simulations. Second, the 3-D DBS placement problem is investigated as the communication efficiency is greatly affected by the positions of DBSs. Then, the DBS placement with IBFD communications (DSP-IBFD) problem for downlink communications is formulated, and two heuristic algorithms are proposed to solve the DSP-IBFD problem based on different DBS placement strategies. The performance of the proposed algorithms are demonstrated via extensive simulations. Third, the potential benefits of jointly optimizing the radio resource assignment and 3-D DBS placement are explored, upon which the Drone-mounted Base Station Placement with IBFD communications (DBSP-IBFD) problem is formulated. Since the DBSP-IBFD problem is NP-hard, it is then decomposed into two sub-problems: the joint bandwidth, power allocation and UE association problem and the DBS placement problem. A 1/2(1-/2^l})-approximation algorithm is proposed to solve the DBSP-IBFD problem based on the solutions to the two sub-problems, where l is the number of simulation runs. Simulation results demonstrate that the throughput of the proposed approximation algorithm is superior to benchmark algorithms. Fourth, the uplink communications is studied as the mobile users need to transmit and receive data to and from base stations. The Backhaul-aware Uplink communications in a full-duplex DBS-aided HetNet (BUD) problem is investigated with the objective to maximize the total throughput of the network while minimizing the number of deployed DBSs. Since the BUD problem is NP-hard, it is then decomposed into three sub-problems: the joint UE association, power and bandwidth assignment problem, the DBS placement problem and the problem of determining the number of DBSs to be deployed.… Advisors/Committee Members: Nirwan Ansari, Abdallah Khreishah, Qing Liu.

Subjects/Keywords: 5G; Drone-mounted base station; Drone-mounted base station; Full-duplex; Heterogeneous networks; OFDMA; Wireless backhauling; Digital Communications and Networking; Systems and Communications

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, L. (2020). Communications with spectrum sharing in 5g networks via drone-mounted base stations. (Doctoral Dissertation). New Jersey Institute of Technology. Retrieved from https://digitalcommons.njit.edu/dissertations/1468

Chicago Manual of Style (16^th Edition):

Zhang, Liang. “Communications with spectrum sharing in 5g networks via drone-mounted base stations.” 2020. Doctoral Dissertation, New Jersey Institute of Technology. Accessed April 13, 2021. https://digitalcommons.njit.edu/dissertations/1468.

MLA Handbook (7^th Edition):

Zhang, Liang. “Communications with spectrum sharing in 5g networks via drone-mounted base stations.” 2020. Web. 13 Apr 2021.

Vancouver:

Zhang L. Communications with spectrum sharing in 5g networks via drone-mounted base stations. [Internet] [Doctoral dissertation]. New Jersey Institute of Technology; 2020. [cited 2021 Apr 13]. Available from: https://digitalcommons.njit.edu/dissertations/1468.

Council of Science Editors:

Zhang L. Communications with spectrum sharing in 5g networks via drone-mounted base stations. [Doctoral Dissertation]. New Jersey Institute of Technology; 2020. Available from: https://digitalcommons.njit.edu/dissertations/1468

RMIT University

29. Daly, R. Development of omnidirectional collinear arrays with beam stability for base station and mobile applications.

Degree: 2013, RMIT University

URL: http://researchbank.rmit.edu.au/view/rmit:160768

► Since the 1800â€™s, inventors have considered electromagnetic radiation as a medium for communications between ship and shore and base to mobile. Generally, these were narrow… (more)

▼ Since the 1800â€™s, inventors have considered electromagnetic radiation as a medium for communications between ship and shore and base to mobile. Generally, these were narrow band services, supported by simple series fed arrays. These arrays are limited in bandwidth by an inherent tapered phase profile which exhibits an undesirable vertical beam angle shift with excessive change in frequency. With a symmetrical tapered or linear phase profile, the radiation pattern remains on the horizon over at least 10% bandwidth. This thesis aims to presents the development of an antenna which has a unique compact planar architecture, and has achieved the performance required for broad band communications channels in the 900 MHz band. With low cost; volume manufacture, PIM and PIP considered. A major achievement in this work has been the development of a planar passive coupled dipole array with coplanar feed network presented on a single sided low cost flexible PCB. In this format, the array can be re produced accurately at a fraction of the cost of the conventional sleeve dipole arrays. Due to PCB processing limits for track spacing, the array has been designed with a main transmission line track spacing of 0.65mm resulting in a higher impedance of 86 Ohms. At this track spacing, the main transmission line can withstand a 2.1 kV ionisation test allowing for a PIP value of 1 Kw. To compliment this planar array, a specially designed planar dipole; matched to the new feed network scheme. With slots to augment the radiation pattern for improved directivity and reduced azimuth ripple, and notches to stagger tune the dipole to cover a broader than otherwise band and compensate for the reactance associated with close proximity to the slotline tracks. This dipole meets broad bandwidth and omnidirectional pattern specifications similar to cylindrical sleeve dipoles, while still maintaining inter-stage isolation. To further compliment the array attributes, a robust coaxial cable connection to the thin and flexible substrate employs a novel passive coupler transition circuit. The proposed transition is electromagnetically coupled to source and ground terminals of the array, eliminating the need for soldering, resulting in low loss, low PIM â€œPassive intermodulationâ€ typically <-148 dBc, This coupler also provides the impedance transformation from 70 Ohms to 50 Ohms. An omnidirectional six element â€œcoplanar waveguide(CPW)â€ fed collinear array was assembled from the planar feed network, dipole elements and passive coupler components, having a total length approximately 1.8 meters. This large array has the unique attributes of wide band, less than 1 degree beam tilt over a frequency range of 850 to 960 MHz (for a measured reflection coefficient magnitude greater than 14 dB), with low measured passive intermodulation below -140dBc â€œDecibel power ratio relative to transmit carrierâ€. The prototype collinear array can also withstand a wind loading of 240 km/h. The resulting antenna array meets the desired frequency band…

Subjects/Keywords: Fields of Research; linear array; base station antenna; center fed; coplanar; coplanar waveguide

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Daly, R. (2013). Development of omnidirectional collinear arrays with beam stability for base station and mobile applications. (Thesis). RMIT University. Retrieved from http://researchbank.rmit.edu.au/view/rmit:160768

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Daly, R. “Development of omnidirectional collinear arrays with beam stability for base station and mobile applications.” 2013. Thesis, RMIT University. Accessed April 13, 2021. http://researchbank.rmit.edu.au/view/rmit:160768.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Daly, R. “Development of omnidirectional collinear arrays with beam stability for base station and mobile applications.” 2013. Web. 13 Apr 2021.

Vancouver:

Daly R. Development of omnidirectional collinear arrays with beam stability for base station and mobile applications. [Internet] [Thesis]. RMIT University; 2013. [cited 2021 Apr 13]. Available from: http://researchbank.rmit.edu.au/view/rmit:160768.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Daly R. Development of omnidirectional collinear arrays with beam stability for base station and mobile applications. [Thesis]. RMIT University; 2013. Available from: http://researchbank.rmit.edu.au/view/rmit:160768

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

30. Yen, Yun-ting. Mobile Base Station for Improvement of Wireless Location.

Degree: Master, Electrical Engineering, 2009, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818109-210227

► In wireless location system, geometric relationship between the base station (BS) and the mobile station (MS) may affect the accuracy of MS location estimate. The… (more)

▼ In wireless location system, geometric relationship between the base station (BS) and the mobile station (MS) may affect the accuracy of MS location estimate. The effect is called Geometric Dilution of Precision (GDOP). Given the information of geometric configuration of BS and MS locations, the GDOP value can be calculated accordingly. In fact, the GDOP value is considered as ratio factor between the location error and measurement noise. A higher GDOP value indicates larger location error in the location estimator. Therefore the GDOP can be utilized as an index for observing the location precision of the MS under different geometric layout. The accuracy of location estimation can be improved by changing the BS device element locations. In the thesis, a time different of arrival (TDOA) wireless location system with mobile base station (MBS) is considered. Changing the geometric layout between the BS and the MS by relocating the MBS, the GDOP effect can be reduced and the accuracy of location estimation also can therefore be improved. Since the simulated annealing (SA) is capable of escaping the local minimum and finding the global minimum in an objective function, the SA algorithm is used in finding the best solution in a defined function based on the GDOP distribution. The best solution is then the destination of an MBS in the process of MS location estimation. When relocating an MBS from its initial location to the best location, it is likely that the MBS enters regions with high GDOP effects. To avoid the problem, the steepest descent (SD) algorithm is utilized for path planning. First, we establish the objective function which consists of the GDOP information and the angle of movement. A nearby location that has the minimum value of objective function is selected as the next move. The process continues until the MBS reaches the destination. A variety of cases are investigated by computer simulations. Simulation results show that the proposed approach can effectively find the best locations for MBSs to relocate. Based on the relocation and path planning, the GDOP effects can be reasonably reduced, and therefore the higher location accuracy is achieved. Advisors/Committee Members: Shiunn-Jang Chern (chair), Jiann-Der Lee (chair), JIEH-CHIAN WU (chair), Chin-Der Wann (committee member).

Subjects/Keywords: path planning; wireless location; mobile base station; geometric dilution of precision (GDOP); TDOA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yen, Y. (2009). Mobile Base Station for Improvement of Wireless Location. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818109-210227

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yen, Yun-ting. “Mobile Base Station for Improvement of Wireless Location.” 2009. Thesis, NSYSU. Accessed April 13, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818109-210227.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yen, Yun-ting. “Mobile Base Station for Improvement of Wireless Location.” 2009. Web. 13 Apr 2021.

Vancouver:

Yen Y. Mobile Base Station for Improvement of Wireless Location. [Internet] [Thesis]. NSYSU; 2009. [cited 2021 Apr 13]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818109-210227.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yen Y. Mobile Base Station for Improvement of Wireless Location. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0818109-210227

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations