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中文摘要：
针对动态TDMA协作MAC协议（C-DTDMA）在高业务量或低信噪比网络中性能下降的问题,对动态TDMA协作MAC协议进行改进,提出一种基于业务量感知的动态TDMA协作MAC协议。通过在控制时隙进行信息交互,传输失败节点利用业务量较小节点的数据时隙进行协作重传。对改进的协议进行数学建模和数值仿真分析,仿真结果表明,该协议可使传输失败节点在高业务量网络中获得较高吞吐量,在低信噪比环境下满足了业务量较大节点的吞吐量需求。
英文摘要：
In networks with high traffic or low signal-to-noise ratio,the performance is declined for cooperative TDMA MAC protocol using dynamic slot assignment（C-DTDMA）.To overcome the problem,an improved protocol based on the awareness of transmission business was put forward.Through the interaction of information in the control slots,the nodes that failed to transmit their packets used the data slot of the node whose traffic was smaller than the source node for cooperative retransmission.Through mathematical modeling and numerical simulation analysis,the results show that the improved protocol can help the failed nodes get higher throughput in high traffic networks,and satisfy the throughput requirements of nodes that have greater traffic in low signal-to-noise ratio networks.
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