多播广播单频网动态资源分配与重分配算法  

Dynamic resource allocation algorithm and resource re-allocation algorithm for MBSFN

作　　者：陈雷[1] CHEN Lei(Department of Public Security Intelligence,Criminal Investigation Police University of China,Shenyang 110035,China)

机构地区：[1]中国刑事警察学院公安情报学系,辽宁沈阳110035

出　　处：《南京邮电大学学报（自然科学版）》2019年第2期20-26,共7页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：辽宁省博士科研启动基金(201601083);辽宁省自然科学基金(20180550046);国家自然科学基金(61172058);中国刑事警察学院2019年重大项目培育计划(D201902001);中国刑事警察学院院级基金(D201703032)资助项目

摘　　要：现有多播广播单频网(MBSFN)的资源分配算法主要以降低资源块使用数量为目标,并未考虑MBSFN的干扰抑制问题。针对该问题,提出了基于干扰抑制的MBSFN动态资源分配算法(MDRAA-IS)。与此同时,针对MBSFN网络拓扑会随用户移动而改变,而现有的资源分配算法消耗资源块过多的问题,给出了动态资源重分配算法。仿真表明MDRAA-IS算法与另外两种传统算法相比在系统传输速率和覆盖率上都有较大的提升,且能够通过调整资源复用距离中的相关参数来调整消耗的资源块数,而且,使用动态资源重分配算法,能有效减少重分配的资源块数。Current resource allocation algorithms for multicast/broadcast single frequency network(MBSFN)are aimed at reducing the number of resource blocks used,but the interference suppression of MBSFN is not considered.To solve this problem,a dynamic resource allocation algorithm for MBSFN based on interference suppression (MDRAA-IS) is proposed.Meanwhile,aimed at the problems that MBSFN network topology changes with user mobility and the existing resource allocation algorithms consuming too many resource blocks,a dynamic resource re-allocation algorithm for MBSFN is proposed.Simulation results show that MDRAA-IS algorithm can improve the system transmission rate and coverage compared with the other two traditional algorithms.Meanwhile,MDRAA-IS algorithm can reduce the number of resource blocks consumed by adjusting the parameters in the resource reuse distance.Moreover,the dynamic resource re-allocation algorithm can effectively reduce the number of the reallocated resource blocks.

关 键 词：多播广播单频网 干扰抑制 资源分配 资源重分配 

分 类 号：TN929.53[电子电信—通信与信息系统]