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A Downlink Radio Resource Allocation Algorithm Based on Inter-Cell Interference Mitigation for Multi-Cell OFDMA System

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4 Author(s)
Deng Gang ; Wireless Technol. Innovation Inst., Beijing Univ. of Posts & Telecommun., Beijing ; Zou Ting ; Xu Ning ; Zhang Ping

A radio resource allocation scheme for multi-cell OFDMA downlink system is proposed, where dynamic resource allocation is realized at both radio network controller (RNC) and base stations (BSs). Different from other inter-cell interference (ICI) mitigation schemes in BSs which pay little attention to system traffic load distribution, the proposed algorithm is semi-distributed. RNC coordinates ICI of cell edge users (CEUs) based on traffic load at super-frame level, whereas BSs assign channels to each user at frame-level based on Proportional-fair (PF) scheduling and allocate power on each channel based on traffic load distribution. Simulations show that the algorithm yields better performance for data services under fast fading channel condition.

Published in:

Communications and Networking in China, 2006. ChinaCom '06. First International Conference on

Date of Conference:

25-27 Oct. 2006