铁路无线Mesh网络数据包转发策略的设计与实现

Design and Realization of Packet Forwarding Policy for Railway Wireless Mesh Network

铁路无线Mesh网络不仅要求用户数据包按照确定的无线多跳链进行数据转发,而且需要根据节点故障概率的动态变化进行自适应的调整。为此设计了用户/管理数据包选择性转发策略,并基于Linux开源代码进行了具体的功能实现。实验结果表明,基于用户/管理数据包选择性转发策略的铁路无线Mesh网络能正确而高效地进行数据转发,同时可根据Mesh节点故障概率的动态变化进行自适应的转发路径调整。

Different from the traditional wireless mesh network, the railway wireless mesh network requires consumer packets to be forwarded by a Certain multi-hop wireless link, which needs to be adjusted automatically according to the dynamical fault probability variations of the mesh nodes. A selective packet forwarding policy is proposed for consumers and managed packets. Also, this policy is implemented based on the open source code in Linux, in accordance with the principles of the minimum modification and user independency. Experimental results shown that with the selective packet forwarding policy, packet forwarding of the railway wireless mesh network can take place correctly and efficiently, and the multi-hop wireless link can also be adjusted automatically in railway wireless mesh network.