基于时隙调度的DTRA改进协议

提出一种基于时隙调度的DTRA改进协议——SDTRA协议。在邻节点发现阶段，通过发送时间随机抖动，减少发现过程中的冲突；在时隙调度阶段，提出基于贪婪算法的边着色法，调度节点的可用时隙，同步的时隙调度方案更好地保证了对Qos的支持。仿真结果表明，与DTRA协议相比，改进协议在邻节点发现效率、时隙利用率和吞吐量上有较大改进。

Improved DTRA Protocol Based on Slot Schedule

This paper proposes an improved Directional Transmission and Reception Algorithm（DTRA） named SDTRA protocol based on slot schedule.In the process of neighbor discovery stage,the protocol decreases the collision through sending time random delay.In the process of slot schedule stage,it adopts greedy edge coloring algorithm to control the time the node can use.The protocol can assure the QoS support through synchronous slot schedule algorithm.Simulation results show that the improved DTRA protocol is much better than DTRA protocol in neighbor discovery,time utility and throughput.