摘要
针对单小区带上行反馈的多媒体广播组播业务(MBMS)的资源管理框架,提出一种简单有效的优化机制,即限制反馈用户的G因子,以极小的覆盖为代价换取显著的吞吐量提高;同时提出将该机制与MBMS的频域调度结合,并分析了对调度增益的影响.仿真表明,该机制与频域调度(FDPS)相互促进,进一步提高了MBMS的吞吐量.在用户数较多的情况下吞吐量增益达到50%,而覆盖的损失不超过1%.
For the radio resource management （RRM） of single-cell muhimedia broadcast/muhicast service （MBMS） with feedback, a simple and effective mechanism is proposed, in which users with G-factor lower than a threshold are not taken into account in RRM, to trade considerable throughput gain a small loss in coverage （percentage of users receiving data with block error rate lower than 1% ）. This mechanism can be combined with frequency domain packet scheduling （FDPS） of MBMS, and its beneficial impact on the scheduling gain is analyzed. Simulation shows that the proposed mechanism and FDPS can boost each other, that will further improve throughput of MBMS. With moderate to larger number of users per cell, 50% throughput gain can be obtained with coverage loss lower than 1%.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2010年第1期115-119,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家重点基础研究发展计划项目(2007CB310604
2009CB320401)
新一代宽带无线移动通信网科技重大专项项目(2008ZX03003-005)
关键词
多媒体广播组播业务
频域调度
吞吐量与覆盖的折中
G因子
multimedia broadcast/multicast sevice
frequency domain packet scheduling
tradeoff be- tween throughput and coverage
G-factor
