无线网络中多址接入协议仿真测试

Simulation Test of Multiple Access Protocol in Wireless Network

无线网络中的多址接入协议直接影响信道利用率和数据分组传输效率,为此对其展开研究。分析无线网络模型和CAP广播覆盖范围,通过调整智能天线模式使所有移动用户站点都能被光束覆盖;明确节点移动对数据分组收发的影响后,选择PB-AB FMA协议作为无线网络的多址接入协议。在协议中,CAP通过不断轮询节点完成数据分组的收发。对于待接入到信道中的新节点,通过竞争确定接入的优先级,当所有待接入节点都有对应的NEW时隙,且不再发生碰撞,即完成了无线网络多址接入协议的确定。在仿真测试中,所提方法较其它方法相比,有着最低的总信道利用率和平均信道利用率,可在不浪费信道资源的前提下,高效的完成数据分组收发任务。

Multiple access protocols in wireless network directly affect channel utilization and data packet transmission efficiency.Therefore,this research focuses on it.Firstly,we analyzed the wireless network model and CAP broadcast coverage,and then adjusted the smart antenna mode to enable all mobile user sites to be covered by light beams.After determining the impact of node mobility on data packet transmission and reception,we chose PB-AB FMA protocol as the multiple access protocol of the wireless network.In the protocol,CAP completed the sending and receiving of data packets by continuously polling nodes.For the new nodes to be accessed into the channel,the priority could be determined through competition.When all nodes to be accessed had corresponding NEW timeslots and no collisions occurred,the multiple access protocol was determined.In the simulation,the proposed method has the lowest total channel utilization and average utilization,so it is able to efficiently complete data packet transmission and reception tasks without wasting channel resources.