摘要
基于LTE-Advanced系统中的载波聚合技术,对现有的3种资源调度机制:联合用户调度方案(Joint User Scheduling,JUS)、独立随机用户调度方案(Separated Random User Scheduling,SRUS)和独立数据突发级调度方案(Separated Burst Level Scheduling,SBLS)进行研究。针对3种机制在系统吞吐量、排队时延和成分载波(Component Carrier,CC)切换时延性能上的优缺点,提出了半独立负载调度机制(Half Separated Load Scheduling,HSLS)。HSLS采用动态负载均衡准则(Dynamic Load Balance,DLB),另外HSLS基于系统吞吐量和排队时延的要求以多数据突发(multi-burst)作为资源分配粒度,令多个调度器(Resource Scheduler,RS)可以同时分发满足调度条件的用户数据。仿真结果表明,HSLS对设备要求度低,有着良好的系统吞吐量和时延性能表现。
Based on the carrier aggregation in the LTE-Advanced system, the three current resource scheduling systems： JUS （Joint User Scheduling）, SBIS （Separated Random User Scheduling） and SBLS （Separated Burst Level Scheduling） are studied and analyzed. For the advantages and disadvantages of the three mechanisms in system throughput, queuing delay, and switching delay performance of the component cartier,a HSIS （ Half Separated Load Scheduling） mechanism adopting DLB （ Dynamic Lead Balance） is proposed. Based on requirements of system throughput and queuing delay, HSIS mechanism, with multi-burst as the coarse-grained users＇ data satisfying limited requirements o resource allocation principle, makes multiple schedulers distribute simultaneously the certain scheduling conditions. Simulation result indicates that HSLS mechanism has equipment, fairly good performance of system throughput and delivery delay.
出处
《通信技术》
2015年第10期1134-1138,共5页
Communications Technology
基金
上海市科学技术委员会<基于个性化推荐技术的航空移动社区服务模式研究与应用>(No.14DZ1101400)
同济大学研究生国际交流基金资助项目(No.201502008)~~
关键词
载波聚合
资源调度
排队时延
系统吞吐量
carrier aggregation
resource scheduling
queuing delay
system throughput
