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Title CoMP Aware Radio Resource Management in Integrated PON-OFDM Network
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Publication Date
University/Publisher University of Waterloo
Abstract Radio resource management (RRM) is an important component of a mobile wireless network that efficiently utilizes the limited radio resources such as spectrum, transmission power, and network infrastructure. Unfortunately, current RRM schemes do not support cooperative multiple point (CoMP), a promising technology that extends coverage, increases capacity, and improves the spectral efficiency of the next generation broadband network, i.e., 4G network. Specifically, to coordinate with CoMP, a RRM scheme should be aware of three main properties of CoMP - cooperative transmitting information, coordinated scheduling transmission, and single interference noise ratio (SINR) improvement. However, few of the existing RRM schemes consider these properties, since they were designed based on the conventional mobile data networks without CoMP technology. In this dissertation, I present a series of new CoMP aware RRM schemes for ensuring users' throughput and maximizing network capacity in an integrated PON-OFDM network, which is a norm of the 4G network and can best implement the CoMP technology. I call the PON-OFDM network with CoMP a CoMP Network (CoMPNet). I provide two classes of RRM schemes for two practical CoMP technologies, cooperative transmission (CT) and coordinated scheduling (CoS), respectively. In the first class, I propose two groups of RRM schemes using the CT technology. In the first group, three OFDM-TDMA based RRM schemes are designed for three different users' moving speeds. The objective of these schemes is to minimize time slot consumption. The RRM schemes in the third group are contrived for an OFDM-FDMA based CoMPNet. I provide four linear programming (LP) based optimal schemes, one for minimizing bandwidth usage, one for minimizing transmission power consumption, and two for balancing resource costs. An optimized resource allocation solution can be obtained by flexibly choosing one of the schemes according to network load. In the second class, I present a sub-optimal RRM scheme for an OFDM-FDMA based CoMPNet. The CoS technology is applied for ICI mitigation. I formulate the system optimal task into constrained optimization problems for maximizing network capacity. To improve the computation efficiency, fast yet effective heuristic schemes are introduced for divide-and-conquer. The proposed heuristic schemes are featured by CoS based timeslots/subcarriers assignment mechanisms, which are further incorporated with intelligent power control schemes. Through simulations, I study the proposed RRM schemes performances and discuss the effect of the CoMP technology. The performance benefits of CoMP on bandwidth saving and capacity increasing are shown by comparing the new schemes with the conventional schemes without CoMP.
Subjects/Keywords CoMP; Radio resource management; Inter-cell interference
Language en
Country of Publication ca
Record ID handle:10012/7008
Repository waterloo
Date Retrieved
Date Indexed 2018-04-26

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…Station BUA BS-User Association CDMA Code Division Multiple Access CO Central Office CoMP Coordinated Multiple Point CoMPNet CoMP PON-OFDM Network CoS Coordinated Scheduling CSI Channel Status Index CT Cooperative Transmission FDMA…

…Static Station TDMA Time Division Multiple Access VIP Very Improtant Point WiMAX Worldwide Interoperability for Microwave Access xviii Chapter 1 Introduction 1.1 CoMP Aware RRM Schemes Radio resource management (RRM), which is an…

…carefully consider ICI management. Unfortunately, current RRM schemes do not support cooperative multiple point (CoMP), which has been well recognized as an effective strategy for ICI management by performing a tight coordination among the…

…distributed BSs [1]. To coordinate with CoMP, a RRM scheme should be aware of the three main properties of CoMP: 1. one or more BSs can transmit the signal to one user. When two or more BSs cooperatively transmit the same signal to one user, they…

…ratio (SINR) can be improved to save radio resources; however, the CoMP itself costs radio resources on multiple BSs at the same time. Few of the existing RRM schemes consider above properties, since they are designed based on conventional…

…mobile data networks without the CoMP technology. Besides ignoring these properties, the existing RRM schemes are normally distributed schemes based on the distributed network structure of traditional mobile network. However, a centralized RRM scheme is…

…better than the distributed scheme to take advantage of the CoMP technology by supervising the whole network status. In this dissertation, I will focus on the research of centralized CoMP aware RRM schemes, including the BS user association, radio channel…

…allocation, and power allocation schemes. I will provide two series of RRM schemes for two practical CoMP technologies, e.g., cooperative transmission (CT) and coordinated scheduling (CoS), respectively. My new CoMP aware centralized RRM…

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