By Topic

A downlink radio resource allocation algorithm with fractional frequency reuse and guaranteed diverse QoS for multi-cell WiMAX system

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Yingjie Qi ; Dept. of Electron. Eng., Tsinghua Univ., Beijing ; Xiaofeng Zhong ; Jing Wang

A cross-layer resource allocation algorithm with fractional frequency reuse and guaranteed diverse QoS is proposed for WiMAX system, where dynamic resource allocation is implemented at both radio network controller (RNC) and base stations (BSs). In order to maximize system frequency reuse ratio to reach the diverse QoS requirements, several novel subchannel allocation schemes are proposed. An RNC coordinates the inter-channel interference (ICI) information of cell edge users (CEUs) based on traffic load at super-frame level, whereas BSs assign channels at frame-level based on real-time traffic load of each cell. Sub-channel borrowing strategy can be adopted between the cell center users (CCUs) and CEUs, if necessary. All the allocation above is hierarchical in order to support multimedia services with different QoS constraints. The performance of the proposed algorithm is evaluated based on the WiMAX dynamical system-level simulation and compared with other existing algorithms.

Published in:

Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on

Date of Conference:

25-27 Aug. 2008