多优先级的卫星网络信道分配算法  

Channel Allocation Algorithm of Multi-priority Satellite Network

作　　者：别玉霞[1] 卜瑞杰[1] 刘海燕[1] BIE Yu-xia BU Rui-jie LIU Hai-yan(Information and Engineering College of Dalian University, Dalian 116622, China)

机构地区：[1]大连大学信息工程学院,大连116622

出　　处：《计算机科学》2017年第3期132-136,144,共6页Computer Science

基　　金：国家自然科学基金项目(61540023)资助

摘　　要：为了解决终端接入卫星网络的信道分配问题,充分利用卫星网络有限的信道资源,在分析终端级别和业务级别多样性的基础上,加入优先级标识,建立多终端和多业务优先级模型,分析接入满意度与接入阻塞率、链路带宽和链路总时延的关系,建立接入满意度模型,提出信道竞争机制和带宽压缩机制,进而提出基于多终端和多业务优先级的信道分配算法。仿真结果表明,相比传统算法,该算法可以根据不同终端和不同业务级别分配卫星网络的信道资源,提高接入满意度,进而提高信道利用率。In order to solve the problem of channel allocation in terminal access satellite network and make full use of the limited satellite network channel resources, on the analysis in the diversity of terminal level and operational level, this paper added the priorities identified, and established the multi-terminal and multi-service priority model. We ana- lysed the relationship among access-satisfaction and the access eonstrictivity, the link bandwidth and link overall delay, and established access-satisfaction model. The mechanism of channel contention and bandwidth compression was pro- posed, and then an algorithm of multi-terminal and multi-service priority channel allocation was proposed. The measured results show that, compared with traditional algorithms, the algorithm can allocate the channel resources in different ter- minals and service levels, thus improving access satisfaction and channel utilization.

关 键 词：业务级别 终端级别 竞争机制 带宽压缩 信道分配 

分 类 号：TP802.8[自动化与计算机技术—检测技术与自动化装置]