Adjusting Holdoff Algorithm Dynamically According to Network Conditions for Improving Performance of Wireless Mesh Networks

Santong LI  Xuejun TIAN  Takashi OKUDA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E101-B   No.11   pp.2250-2258
Publication Date: 2018/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2017EBP3380
Type of Manuscript: PAPER
Category: Fundamental Theories for Communications
Keyword: 
IEEE802.16,  WiMAX,  wireless mesh networks,  distributed scheduling,  

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Summary: 
Unlike Wi-Fi, Broadband Wireless Access (BWA) technology provides a high-speed communication in a wide area. The IEEE 802.16 (WiMAX) standard of wireless mesh networks is one of the widely used BWA standards. WiMAX mesh mode achieves data transmission in conflict-free manner in multihop networks by using the control messages (three way handshake messages or MSH-DSCH messages) to reserve channel for sending data. Concurrently, the coordination of three way handshake messages depends on the mechanism named Election based Transmission Timing (EBTT). However, IEEE 802.16 mesh mode uses a static holdoff algorithm, which leads to a low performance in the majority of cases. In this paper, after analyzing the IEEE 802.16 mesh mode with coordinated distributed scheduling, we propose a novel method to improve the throughput by a dynamic holdoff algorithm. The simulation results show that our proposal gets a better throughput performance.