基于TDMA支持实时应用的多跳时隙预留协议

TDMA-based Multi-hop Slots Reservation Protocol Supporting Real-time Applications

提出一种基于时分多址接入(TDMA)的多跳时隙预留的协议(TMSR)以支持Ad Hoc网络中的实时应用,协议中节点为实时数据包的多跳转发预留信道时隙,通过超帧把数据包从源节点传输到远端的目的节点。通过NS2对提出的协议性能进行评估,重点分析了静态和移动环境下该协议的平均端到端时延和平均吞吐量,同时,在单跳仿真场景中,对TMSR协议与ETDMA进行对比,仿真结果表明随着数据流量的增加,TMSR提供了比E-TDMA更好的数据包吞吐量和时延性能。在多跳仿真场景中,采用TMSR协议的节点间的平均端到端的时延满足了实时应用的端到端多跳时延要求。

Multi-hop slots reservation protocol （TMSR） based on time division multiple access （TDMA） supports real-time applications in Ad Hoc network, TMSR lets nodes reserve the channel resource for multi-hop real-time packet transmission, the packet transmitted from the source node to the remote destination node within super-frame. The performance of the proposed protocol is evaluated by NS2, the average end to end delay in static and mobile environments and the average throughput of the agreement are all analyzed. In the single-hop scenario , TMSR and Evolutionary-TDMA （ E-TD- MA） are compared, simulation results show that TMSR gives better packet throughput and delay performance than E-TDMA as the offered traffic is in- creased. In the multi-hop scenarios, the average end-to-end delay of TMSR nodes meets the multi-hop end-to-end delay requirements.