Intercell Radio Resource Management through Network Coordination for IMT-Advanced Systems

• Published in: EURASIP journal on wireless communications and networking Vol. 2010; no. 1
• Main Authors: Choi, Young-June, Prasad, Narayan, Rangarajan, Sampath
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.01.2010; SpringerOpen
• Subjects: Adaptive Cross-Layer Strategies for Fourth Generation Wireless Communications; Communications Engineering; Engineering; Information Systems Applications (incl.Internet); Networks; Research Article; Signal,Image and Speech Processing; Intercell Interference; Fractional Frequency Reuse; Proportional Fair; Orthogonal Frequency Division Multiple Access System; Radio Resource
• ISSN: 1687-1499; 1687-1472; 1687-1499
• DOI: 10.1155/2010/531347

In IMT-Advanced systems, a cross-layer approach coupling network coordination and radio resource managements enables mitigation of intercell interference and throughput improvement of cell-edge users. To facilitate coordination among base stations, we propose a new radio-resource management framework where cell-edge users and cell-interior users are separately managed by two different radio-resource managers. In the proposed framework, we address the issue of how to classify a user as cell-edge user or cell-interior user, and how much radio resource the cell-edge users may occupy. We present a solution where a user switches the user type so as to maximize overall network throughput subject to the condition that their own throughput does not decrease upon switching. We verify our solution using analysis and simulation experiments where two or three BSs are coordinated to support fractional frequency reuse or macrodiversity and demonstrate that our solution can guarantee superior cell-edge performance and achieve a high network throughput.