论文部分内容阅读
提出了一种基于2.4GHz MIMO网状网络的固定信道分配机制.对系统的设计和信道分配的具体方法做了详细的阐述.由于在网状网络中是用了MIMO的干扰去除算法和多用户模式,因此在这个系统中允许存在更多的并发数据流.从而大幅度提升了TCP、UDP的传输吞吐率.802.11b中的3个不重叠信道被平均分配在网状网络的不同部分,信道1和信道11分别被指定为主干链路上的收和发,信道6被分配给无线终端和接入Mesh路由器的连接.最后通过仿真比较了这种信道分配方法和普通多信道多发射天线网络的性能,结果表明,对于2跳和2跳的通信场景,平均吞吐率分别上升80%和200%,数据包延迟分别降低50%和70%.
A fixed channel allocation mechanism based on 2.4GHz MIMO mesh network is proposed.The detailed design of the system and the specific method of channel allocation are described in detail.As the MIMO network is used in the mesh network to remove the interference and multi-user Mode, so in this system allows more concurrent data streams.Thus drastically improve the TCP, UDP transmission throughput.802.11b three non-overlapping channels are evenly distributed in different parts of the mesh network, the channel 1 and channel 11 are designated as the receiving and sending on the backbone link, and the channel 6 is assigned to the connection between the wireless terminal and the access mesh router.At last, this channel allocation method is compared with that of the ordinary multi-channel multiple transmitting antenna network The results show that for two-hop and two-hop communication scenarios, the average throughput increases by 80% and 200% respectively, and packet delay decreases by 50% and 70% respectively.