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针对IEEE802.11协议中的单访问点环境,研究了多访问点和移动终端的无线Mesh网络存在的问题,提出了基于修改IEEE802.11协议的单信道自组网络解决方案。方案存在的主要问题是单信道结构的性能低,就此提出改进的多信道Mesh结构。该结构针对互连的多访问点,基于分布式协调功能技术来实现。在OPNET8.1上进行了仿真实验,结果表明信息通过量和信道利用率均获得了好的性能。
Aiming at single access point environment in IEEE802.11 protocol, this paper studies the problems existing in wireless Mesh networks with multiple access points and mobile terminals and proposes a single channel ad hoc network solution based on IEEE802.11 protocol modification. The main problem existing in the scheme is the low performance of the single-channel structure. In this connection, an improved multi-channel Mesh structure is proposed. The structure is for multi-access points of interconnection, based on the distributed coordination function technique. The simulation experiments on OPNET8.1 show that the throughput and the channel utilization have achieved good performance.