基于邻居时隙切换的时分多址接入协议研究

Research of Time Division Multiple Access Protocol Based on Adjacent Timeslot Transfer

针对传统TDMA网络节点间业务量不均匀的情况下,会造成信道资源严重浪费的问题,设计了一种基于邻居时隙切换的动态TDMA协议(TDMA protocol based on adjacent timeslot transfer,ATT-TDMA),切换邻居空闲时隙,更改节点业务时隙长度但不影响整个网络循环周期的结构,实现时隙的动态利用。利用OPNET平台搭建仿真模型,并与HFTP协议和TDMA协议作了对比分析。仿真结果表明,相同条件下ATT-TDMA相比HFTP协议和TDMA协议,在消息投递率、平均时延和吞吐量方面具有更优异的性能。

A dynamic TDMA protocol based on adjacent timeslot transfer（ATT-TDMA）is designed to solve the great waste of channel source when business is not uniform between of nodes in the traditional TDMA network,which timeslot is utilized dynamically by transfering adjacent free timeslot,changes the length of the business timeslot of nodes without affecting the entire network cycle structure. The performances comparision is made with HFTP protocol and TDMA protocol by OPNET.Simulation results under the same conditions show that ATT-TDMA protocol has better performance than HFTP protocol and TDMA protocol on the parameters of message delivery radio,traffic delay and network throughput.