基于效用公平的低轨卫星网络呼叫准入控制算法  

Call admission control algorithm based on utility fairess for low earth prbit satellite networks

作　　者：那振宇[1] 王振永[1] 郭庆[1] 杨明川[1] 

机构地区：[1]哈尔滨工业大学通信研究所,哈尔滨150080

出　　处：《吉林大学学报（工学版）》2009年第2期530-535,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60532030)

摘　　要：提出了一种新的适用于多媒体低轨卫星网络的呼叫准入控制算法。该算法利用目标小区实时切换掉线概率,结合概率门限方法和效用公平分配机制为切换呼叫预留带宽。仿真结果表明,与其他算法相比,本算法不仅提供了满意的新呼叫阻塞概率,还能够大大降低切换呼叫掉线概率,同时保证了较高的带宽利用率。A call admission control algorithm for multimedia low orbit satellite networks was proposed.Based on real time call dropping probability of destination cell,combining probability threshold method,and utility fairess allocation scheme,the algorithm reserved bandwidth for handoff calls.Simulation results show that the proposed algorithm presents satisfied new call blocking probability and can greatly reduce handoff dropping probability with guaranteed higher banfwidth unilization.

关 键 词：通信技术 呼叫准入控制 低轨卫星 效用公平 服务质量 

分 类 号：TN927.2[电子电信—通信与信息系统]