摘要
LTE-Advanced系统中引入了中继技术,主要用来扩大小区覆盖。而现有的传统的资源调度方案并没有考虑引入中继后回程链路和接入链路的关联性,导致两条链路速率不匹配,降低系统资源的利用率。本文提出一种基于中继缓存队列的调度机制,即根据中继的缓存队列长度动态改变用户在回程链路调度的优先级,使用户在两条链路的传输速率尽量匹配。仿真结果表明,新提出的资源调度方案可以使接入中继的用户吞吐量增加,提高系统的资源利用率。
The introduction of relay technique inLTE-Advanced system is mainly used to increase cellcoverage. The traditional resource scheduling schemedoes not consider the relation between backhaul linkand access link, and can＇t maximize the use of systemresources. This paper proposes a scheduling mechanism based on relay cache information. eNodeB candynamically change user scheduling priority based onqueue length in relay, allowing the user data rate intwo link to match. Simulation results show that theproposed new resource scheduling scheme increasesthe throughput of users and improve the resource utilization of the system.
出处
《现代电信科技》
2014年第4期6-9,14,共5页
Modern Science & Technology of Telecommunications
