Available capacity and robust wireless mesh connectivity of TDD-based networks  

作　　者：宋甲英 Li Xu Zhong Zhangdui 

机构地区：[1]State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, P. R. China

出　　处：《High Technology Letters》2011年第1期80-85,共6页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China （ No. 60674009, 60830001 ）.

摘　　要：This paper addresses the available capacity and robust connectivity of time division duplex based wireless mesh networks （TDD-based WMNs）. A stochastic model is presented for TDD-based WMNs. Considering the parameters that affect the network performance like ratio of control slots number to data slots number, collision probability, node density and average hopcounts, the availa- ble capacity for each node is inferred. Meanwhile, the order of transmission range for robust connec- tivity of large scale WMNs is derived. With the stochastic model and inferred available capacity per node, the performance of TDD-based WMNs using IEEE 802.16 standard is analyzed under various conditions. Simulation results indicate that the available capacity of IEEE 802.16-based TDD-based WMNs and the theoretical result have the same increasing and decreasing trend as the node density increases. Simulation results also illustrate the optimal value of the ratio of control slots number to data slots number that maximizes the available capacity.

关 键 词：wireless mesh networks （WMNs） TDD/TDMA performance analysis available capacity robust connectivity 

分 类 号：TN915.04[电子电信—通信与信息系统] TN925.93[电子电信—信息与通信工程]