A Channel Access Scheme with Joint Clean-Air Spatial Reuse and Power Control in Wireless Mesh Networks

• Main Authors: Han-Tien Chang, 張瀚天
• Other Authors: 孫雅麗
• Format: Others
• Language: en_US
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/14494360341725700063

碩士 === 臺灣大學 === 資訊管理學研究所 === 98 === In general, there are two approaches to maximize network throughput capacity in a single-channel wireless mesh network: increasing the number of non-interfering transmissions at each time slot by exploiting spatial reuse, and increasing transmission rate of active transmitters. However, a tradeoff of the two ways encounters the wireless communication inference problem. Therefore, we want to investigate the tradeoff between spatial reuse and transmission power control on network throughput capacity in spatial TDMA-based wireless mesh network with single channel. In this paper, we propose a Clean-Air Spatial Reuse Policy to control clean air (interference free) zone and determine the set of concurrent access groups based on the policy. Then, we perform transmission power assignment to each transmitter to maximize the network throughput capacity. Experiment results of the network throughput capacity performance under different levels of the Clean-Air Spatial Reuse policy are presented.