Fair Bandwidth Allocation Algorithm for Multi-channel Wireless Mesh Network
Fanjun Su, Fang Hui-cong, Xu Jian, WU Chun-xue · Jisuanji gongcheng · 2012
(Abstract)Aiming at the unfair bandwidth allocation problem in Wireless Mesh Network(WMN) based on IEEE802.11 when transferring data through multi-hop, this paper proposes an improved bandwidth allocation algorithm ——Detection-based Adjustment and Schedule(DBAS). DBAS detects the active end node numbers of its child nodes to calculate the allocation indexes, and then sends them to its child nodes. A child node adjusts the size of contention window of Media Access Control(MAC) level after receiving the allocation index. In addition, a modified round robin schedule algorithm is adopted when a node sends packets to its father node. NS2 experimental result verifies the effectiveness of the proposed