CAJ | 학술논문

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%.
침대단소구대상행반궤적다매체엄파조파업무(MBMS)적자원관리광가,제출일충간단유효적우화궤제,즉한제반궤용호적G인자,이겁소적복개위대개환취현저적탄토량제고;동시제출장해궤제여MBMS적빈역조도결합,병분석료대조도증익적영향. 방진표명,해궤제여빈역조도(FDPS)상호촉진,진일보제고료MBMS적탄토량. 재용호수교다적정황하탄토량증익체도50%,이복개적손실불초과1%.
For the radio resource management (RRM) of single-cell multimedia broadcast/multicast 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%.