E-MBMS网络降低终端能耗时-频资源分配算法  

Power-Saving Aware Time-Frequency 2-D Resource Allocation Algorithm for E-MBMS Networks

作　　者：盛煜[1] 彭木根[1] 王文博[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2008年第2期80-84,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家"863计划"项目(2006AA01Z257)

摘　　要：结合增强-多媒体广播/组播业务(E-MBMS)网络特性,提出了一种可以有效降低终端能耗的时-频域二维资源分配算法.时域分配以最小化终端能耗为原则,对不同E-MBMS会话进行合并,使用户接收总时隙数最小;频域分配在满足各会话目标速率的基础上,以系统吞吐量最大化为优化目标.分配算法在每个正交频分复用(OFDM)帧内完成,将时-频资源单位分配给不同广播/组播会话.仿真结果表明,该算法可以有效地降低终端接收广播/组播会话时的能量消耗,并在提高系统公平性前提下,使平均吞吐量可以接近最优分配算法.With characteristic of enhanced multimedia broadcast/multicast service （E-MBMS） networks, a time-frequency two dimensions （2-D） resource allocation algorithm based on power-saving is proposed. In time domain, the proposed algorithm minimizing power consumption merges different E- MBMS sessions and minimizes the total number of receiving slots. Allocation in frequency domain is aimed at maximizing system throughput under the condition in which the target rates can be attained. The proposed scheduling algorithm is done in each orthogonal frequency division multiplexing （OFDM）frame, it allocates time-frequency units to different sessions. Simulation shows that the efficiency of proposed allocation algorithm can obviously reduce power consumption of MBMS handsets and will be with significant higher fairness with throughput being close to the upper bound of optimum method.

关 键 词：增强-多媒体广播/组播业务 终端能耗节省 资源分配 时-频单位 

分 类 号：TN929.5[电子电信—通信与信息系统]