摘要
媒体接入控制协议是卫星网络的一个重要协议。为提高卫星通信网络的信道利用率,提出一种将固定时隙分配和按需请求分配相结合的混合式S-MAC协议。仿真结果表明:S-MAC协议在吞吐量性能上明显优于现有的纯固定分配,在仿真的后期逐渐超过纯按需分配的吞吐量,S-MAC协议在提高信道利用率的同时,保持了较高的吞吐性能和传输时延性能。
Media Access Control protocol is an important protocol in satellite networks. To improve the bandwidth utilization of the satellite networks,a hybrid S-MAC protocol which combines Fix Assignment Multiple Access with Demand Assignment Multiple Access is proposed. Simulation results show that S-MAC protocol improves throughput performance greatly comparing with the existing pure Fix Assignment Multiple Access, and gradually exceeds pure Demand Assignment Multiple Access in the final phase of the simulation, S-MAC protocol improves the bandwidth utilization, and achieves higher throughput performance as well as with short transmission delay.
出处
《计算机应用与软件》
CSCD
2009年第12期16-17,47,共3页
Computer Applications and Software
基金
国家自然科学基金(60573141
60773041)
国家高技术研究发展计划(2006AA0IZ219)
江苏省自然科学基金(BK2005146)
江苏高技术研究计划(BG2005038
BG2006001)
