Packet Scheduling Using Bidirectional Concurrent Transmission in WiMAX Mesh Networks
Performance of wireless mesh networks can be greatly improved by employing spatial reuse with concurrent transmissions. However, most current research works on centralized scheduling for WiMAX mesh networks are based on a unidirectional concurrent scheme, i.e., transmissions of uplinks and downlinks are considered separately. In this paper, we analyze the interference model of IEEE 802.16 TDMA mesh networks and propose a bidirectional concurrent transmission model. We propose a packet scheduling problem to formulate centralized scheduling in WiMAX mesh networks with bidirectional concurrent transmission, and make simulations to verify the effect of it with various scheduling algorithms. Experiment results reveal that comparing to unidirectional transmission, bidirectional transmission can effectively minimize the number of timeslots required to transmission packets.
wireless mesh networks multi-hop spatial reuse centralized scheduling interference
Qing Xiong Weijia Jia Chanle Wu
School of Computer, Wuhan University, Wuhan, P. R. China;Department of Computer Science,City Univers Department of Computer Science,City University of Hong Kong School of Computer, Wuhan University, Wuhan, P. R. China
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）