摘要: 在无线Mesh网络(WMN)媒体访问控制(MAC)层上,分层信标帧驱动协议(Layer-BLBP)存在高延迟、多次重传以及无法适应较大规模拓扑结构的问题。为此,提出一种基于码片标识的WMN MAC层多播纠错协议。该协议为每个节点指派一个全网唯一且相互正交的码片序列,利用码片对数据包进行加密,从而实现全网的信道共享。仿真结果表明,该协议在网络规模大、错误率高的环境下,仍能保证多播过程具有较低延迟和较少重传次数。
关键词:
无线Mesh网络,
码片,
媒体访问控制层,
传输延迟,
多播纠错协议
Abstract: High delay time, extensive retransmission times and failure of adapting the large scale of Wireless Mesh Network(WMN) are the major problems of the existing Layer-BLBP protocol of WMN. To address these problem above, this paper presents a multicast error correction protocol based on chip. Every node has its unique and orthogonal chip in proposed protocol, then encrypt the data using their chip, so it can share the channel. Simulation results show that this protocol preserves comparatively less delay time and retains relatively fewer transmission times than the original LBLBP in high error rates environment by the simulating result.
Key words:
Wireless Mesh Network(WMN),
chip,
Media Access Control(MAC) layer,
transmission delay,
multicast error correction protocol
中图分类号:
强鹂, 周颢, 赵保华. 基于码片标识的WMN多播纠错协议[J]. 计算机工程, 2012, 38(04): 104-107.
JIANG Li, ZHOU Hao, DIAO Bao-Hua. Multicast Error Correction Protocol in WMN Based on Chip Identification[J]. Computer Engineering, 2012, 38(04): 104-107.