一种WDS无线网桥自动组网设计与实现

摘要

通过对无线分配系统WDS(Wireless Distribution System)的研究分析,提出一种基于无线分配系统自动协商构建无线网络的设计方案.该方案包括设计一种私有网络连接协议--无线网桥自动组网协议,以及协议栈在无线网桥中的实现.无线网桥自动组网协议的设计采取了逐步完善的策略,协议的实现采用了Linux线程机制,应用原始套接字直接对数据链路层操作,将无线网桥自动组网协议帧封装在DIX EthernetV2帧中来完成协议通信.针对无线网络可能出现分裂的情况,采取了无线网络工作组重组的方法,确保无线分配网络整体性.%Through the research and analysis on wireless distribution system (WDS), in the article we bring forward a design of auto-negotiated wireless network construction based on WDS. This design includes a private network connection protocol - Smart Bridge Network Protocol (SBNP) as well as the implementation of the protocol stack in wireless bridge. The design of SBNP adopts a graduallyconsummated pattern. The implementation of the protocol can be achieved by using Linux thread mechanism and direct access of primitive sockets to the data link layer in which SBNP is automatically encapsulated in DIX Ethernet V2 frame to complete the protocol communication.In case of cleavage, the design applies the wireless-network-group-restructuring method to guaratee the integrity of the wireless distribution network.