一种适于Ad Hoc网的改进型TDMA协议

多址接入协议是影响Ad Hoc网络服务质量（QoS）的关键因素。针对特定用户关切的网络吞吐量、实时性、丢包率等参数指标，提出了一种固定分配机制和自适应竞争机制相结合的改进型TDMA协议（DTDMA）。首先介绍了胁TDMA算法以及工作流程，其次，分析了D-TDMA协议对网络吞吐量、业务实时性、丢包率的影响，最后，通过计算机仿真，验证了D-TDMA协议的正确性。

A Reform TDMA Protocol Fitted for Ad Hoc Network

Multiple Access protocol is key factor affect Qos of Ad-hoc network. Aiming at network throughput, delay and loss packet rate, the dissertation puts forward a reform TDMA protocol： D-TDMA that combines fixed allocation mecha nism and adaptive competitive mechanism. First, the dissertation introduces arithmetic and flow of D-TDMA protocol. Sec ond, the dissertation analyzes that D-TDMA protocol impacts network throughput, delay and loss packet rate. At last, through simulation, the arithmetic has been verified to be right.