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针对现有基于固定分配时隙的ad hoc网络MAC协议时隙利用率低,不能适应突发网络业务的局限性展开研究,并在此基础上提出了一种适用于规模可扩展的ad hoc网络的动态时隙分配算法(DTDMA).该算法利用较少的控制开销,通过节点间控制帧的交互,实现在网络负载较重的情况下,可以有效保证多个节点无冲突的接入信道,并针对不同优先级的网络业务提供相应优先级的时延保证.QualNet网络仿真环境中的仿真实验证明该算法能创建一个规模可扩展的无线自组织网络,且当网络中存在突发流业务时大大提高了网络吞吐量,减小了平均端到端时延,并实现了区分优先级服务.
Aiming at the existing problems that the utilization of time slot of MAC protocol in ad hoc networks based on fixed allocated time slots is low and can not adapt to the limitations of burst network services, a new ad hoc network suitable for scalable ad hoc networks (DTDMA) .This algorithm uses fewer control overheads and interacts with control frames through nodes to ensure that there are no conflicting access channels for multiple nodes under heavy network load, And provide corresponding priority delay guarantee for network services of different priorities.A simulation experiment in the network simulation environment of QualNet shows that the algorithm can create a scalable wireless ad hoc network and that when there is burst traffic in the network Dramatically improves network throughput, reduces average end-to-end latency, and enables prioritized service differentiation.