根据无线网络的特点和需求,IEEE802.11工作组提出了二层路径转发的概念,即在数据链路层通过Mac地址进行数据转发。HWMP(Hybrid Wireless Mesh Protocol)和Batman-adv(Better Approach to Mobile Ad-hoc Networking Advanced)都是基于数...根据无线网络的特点和需求,IEEE802.11工作组提出了二层路径转发的概念,即在数据链路层通过Mac地址进行数据转发。HWMP(Hybrid Wireless Mesh Protocol)和Batman-adv(Better Approach to Mobile Ad-hoc Networking Advanced)都是基于数据链路层的路由协议,本文通过对两种协议的原理进行介绍,并在相同条件下进行对比实验,分析两种路由协议的传输稳定性和路由收敛性。结果表明Batman-adv路由协议在传输稳定性方面比HWMP表现更优,在收敛性方面表现HWMP和Batman-adv路由协议表现都较好。展开更多
Network coding mechanisms, such as COPE, can improve network throughput effectively in Wireless Mesh Networks（WMN）. While the Hybrid Wireless Mesh Protocol（HWMP） is suitable for WMN, its extension with COPE does n...Network coding mechanisms, such as COPE, can improve network throughput effectively in Wireless Mesh Networks（WMN）. While the Hybrid Wireless Mesh Protocol（HWMP） is suitable for WMN, its extension with COPE does not provide any added benefits; specifically, HWMP cannot establish paths with more coding opportunities. As a result, the advantages of network coding cannot be exploited sufficiently. This paper proposes improvements upon HWMP with a new, network Coding-Aware routing protocol（CAHWMP） for WMN. In the CAHWMP protocol, we propose a coding criterion based on data streams to devise an algorithm for actively detecting coding opportunities during path discovery. CAHWMP subsequently establishes paths using the codingaware routing metric, which can balance channel resource consumption and the gain due to sharing resources introduced by network coding. Simulation results show that CAHWMP can establish paths with more coding opportunities; as a result, it improves network performance such as network throughput.展开更多
文摘根据无线网络的特点和需求,IEEE802.11工作组提出了二层路径转发的概念,即在数据链路层通过Mac地址进行数据转发。HWMP(Hybrid Wireless Mesh Protocol)和Batman-adv(Better Approach to Mobile Ad-hoc Networking Advanced)都是基于数据链路层的路由协议,本文通过对两种协议的原理进行介绍,并在相同条件下进行对比实验,分析两种路由协议的传输稳定性和路由收敛性。结果表明Batman-adv路由协议在传输稳定性方面比HWMP表现更优,在收敛性方面表现HWMP和Batman-adv路由协议表现都较好。
基金supported by the National Natural Science Foundation of China (No. 61301110)
文摘Network coding mechanisms, such as COPE, can improve network throughput effectively in Wireless Mesh Networks（WMN）. While the Hybrid Wireless Mesh Protocol（HWMP） is suitable for WMN, its extension with COPE does not provide any added benefits; specifically, HWMP cannot establish paths with more coding opportunities. As a result, the advantages of network coding cannot be exploited sufficiently. This paper proposes improvements upon HWMP with a new, network Coding-Aware routing protocol（CAHWMP） for WMN. In the CAHWMP protocol, we propose a coding criterion based on data streams to devise an algorithm for actively detecting coding opportunities during path discovery. CAHWMP subsequently establishes paths using the codingaware routing metric, which can balance channel resource consumption and the gain due to sharing resources introduced by network coding. Simulation results show that CAHWMP can establish paths with more coding opportunities; as a result, it improves network performance such as network throughput.
