引入ad hoc方式的LEO卫星终端双模组网模型及性能分析  

Networking model and traffic analysis for integrating ad hoc and LEO satellite terminals

作　　者：汪小燕[1] 王浩[1] 董燕[1] 黄载禄[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《通信学报》2006年第8期139-143,共5页Journal on Communications

基　　金：武器装备预研基金资助项目(51421010805JW05)~~

摘　　要：引入adhoc方式,提出基于卫星系统原有信令通道的双模组网模型,使近距离溢出业务在卫星系统控制下以类adhoc通信方式分流,以改善系统总体性能指标。仿真实验证明该模型可达到降低实际呼叫阻塞率,提高信道有效利用率的目的。The compromise between the utilization rate of valuable satellite channels and the blocking probability of new call was hardly to achieve. Enlightened by the advantages of ad hoc networking, a new scheme was proposed which allowed the terminals to work in alternative mode according the instructions from the satellite＇s signaling channel, meaned to communicate with other terminals in ad hoc mode when they were in a distance shorter than the maximum ad hoc communication distance and when the system was in busy state or in normal satellite communication mode when the system was idle. So the overflow traffic in nearer distance might get serviced with ad hoc mode and the system＇s parameters was improved. Simulation results show that the proposed scheme has decreased the realistic call blocking probability and increased the valid channel utility rate of the system.

关 键 词：LE0卫星通信 AD HOC 双模组网 话务模型 

分 类 号：TN913-24[电子电信—通信与信息系统]