摘要
基于无线网络中设计提供服务质量(quality of service,QoS)的路由协议是一项具有挑战性的工作,提出无线卫星网络中基于定向天线的服务质量保证的空间重用的带宽预留算法。卫星网络中许多音/视频会议、远程教育等重要应用,需要服务质量保证。无线网络中的定向天线技术提供了显著增加空间重用性的能力,提高无线网络中的数据传输效率。研究使用定向天线的无线卫星网络中基于时分多址的带宽预留算法,该算法给不同方向的地面终端分配相同时隙来提高带宽资源的空间重用性,提高通信效率。通过模拟实验分析研究证明,该算法在服务质量调用成功率、吞吐量和延迟方面有比较好的性能。
The design of a routing protocol for the provision of QoS in a satellite network is a challenging task. This paper proposed a novel spatial reused bandwidth reservation for QoS guaranteed in satellite networks based on directional antennas. Many important applications, such as audio/video conferences and distance education, require the quality of service guarantee in satellite networks. Directional antennas technology in wireless network provided the capability for considerable increase in spatial reuse, which increased the efficiency of communication. It studied a time division multiple access （TDMA）-based bandwidth reservation scheme by using directional antennas in satellite networks. This scheme allocated and reserved different time slots to different directional ground terminals, which could improve the spatial reuse of bandwidth resource and the efficiency of communication. This paper carried out simulations to study the performance of this scheme. The proposed scheme performs better in terms of QoS call success rate, throughput and delay.
出处
《计算机应用研究》
CSCD
北大核心
2012年第8期3103-3107,共5页
Application Research of Computers
基金
国家自然科学基金资助项目(60602029
60772088)
湖北省高等学校优秀中青年科技创新团队资助计划项目(T200902)
湖北省教育厅科研项目(Q20112205)
关键词
带宽预留
定向天线
时分多址
卫星网络
空间重用
bandwidth reservation
directional antennas
TDMA
satellite networks
spatial reused
