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。
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.
出处
《计算机工程》
CAS
CSCD
2012年第4期104-107,共4页
Computer Engineering
基金
国家自然科学基金资助项目(60872009)
国家“863”计划基金资助项目(2009AA01Z148)
安徽高校省级自然科学研究计划基金资助重大项目(ZD2008005-2,ZD200904,JK2009A013,JK2009A025)
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
Wireless Mesh Network（WMN）
chip
Media Access Control（MAC） layer
transmission delay
multicast error correction protocol
