关键词: 无线网状网络, 概率访问, 局部分布式, IEEE 802.11 s, 流量平衡

Abstract: Aiming at the problem of unbalanced flow allocation among end-to-end in multi-interface oriented WMN, this paper proposed a local distributed EDCA flow balance solution based on probabilistic access. Uses of directional communication in a multi-interface mesh network introduced the problem of unbalanced flow allocation among the end-to-end flow that resulted in inefficient channel access using the standard EDCA mechanism. This paper modeled the problem of flow balance among end-to-end flow in multi-interface directional WMN as a convex optimization problem model. According to the convex property of aggregation problem, a local distributed solution was designed to solve the problem of flow balance allocation. Furthermore, an efficient probabilistic channel access mechanism was used in EDCA in order to guarantee the access requirements of a single interface in a mesh STA and achieve channel assignment. The simulation results show that the solution can balance network throughput and network capacity well and improve network performance.

Key words:

Wireless mesh network, probabilistic access, localized distributed, IEEE 802.11 s, flow balance