基于动态中继激励的协作下行传输用户调度  

User scheduling in cooperative downlink transmission based on dynamic relay stimulation

作　　者：李钊[1] 李培凤[1] 蔡沈锦 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,西安710071

出　　处：《吉林大学学报（工学版）》2016年第4期1313-1319,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(61231008;61102057);国家科技重大专项基金项目(2012ZX03003005-005);高等学校引智计划基金项目(B08038);长江学者和创新团队发展计划基金项目(IRT0852);中央高校基本科研业务费资金项目(K5051301014)

摘　　要：针对协作下行通信系统提出一种基于动态中继激励的用户调度机制,对目的用户和中继节点进行联合调度,并对协助其他用户数据传输的移动节点给予合理的资源补偿。将中继节点对目的用户的数据协作贡献进行量化,基于该参数和节点的剩余能量进行调度权重的计算,实现对中继节点调度机会的动态补偿。仿真结果表明,所提机制能够改善参与数据协作的用户的调度公平性,延长系统生存时间,提高用户能量效率。A user scheduling mechanism based on dynamic relay stimulation is proposed for cooperative downlink communication system.The scheme jointly schedules a target user and a relay node.A reasonable portion of resource is offered as a reward to a mobile node that assists the data transmission of other user.The cooperative contribution of a relay node to the destination user is quantified.Based on this parameter as well as the user＇s residual energy,the scheduling weight is computed.Then the dynamic compensation of scheduling opportunity to a relay node is achieved.Simulation results show that the proposed scheme can increase the fairness of users who participate in data cooperation.Also it can improve the system lifetime and user′s energy efficiency.

关 键 词：通信技术 协作通信 下行链路 调度 能量效率 

分 类 号：TN929.5[电子电信—通信与信息系统]