一种基于公平接入的按需动态TDMA协议

An on-demand dynamic TDMA protocol based on fair access

针对移动自组织网络(MANET)动态时分多址接入(TDMA)协议的公平性问题,提出了一种基于公平接入的按需动态TDMA协议。节点以一定概率对业务时隙发起申请,根据邻居节点的回复完成时隙占用,通过感知业务量对占用的业务时隙数量进行动态调整。节点获取时隙资源的能力与节点编号以及时隙申请的先后顺序无关。对时隙申请概率以及一个时帧周期内的业务时隙个数进行了分析,给出了最优的参数选择。仿真结果表明相较于其它动态TDMA协议,该协议可以在保证网络吞吐量的同时提高节点接入信道的公平性。

Concerning the fariness of dynamic Time Division Multiple Access(TDMA) protocols, an on-demand dynamic TDMA protocol based on fair access for the Mobile Ad hoc Network(MANET) is proposed.Nodes in the network initiate an application for the service time slot with a certain probability.The proposed protocol completes the time slot occupation according to the reply of the neighbor nodes, and dynamically adjusts the number of occupied service time slots by sensing the traffic volume.The ability of a node to obtain time slot resources has nothing to do with the node number and the order of applications.The application probability of time slot and the number of service time slots in a time frame period are analyzed, and the optimal parameter selection is given.Simulation results have proven that this protocol can improve the fairness of node access channels while ensuring network throughput compared with other protocols.