LTE系统上行半静态调度资源碰撞问题的改进  

Improvement of uplink semi-persistent scheduling resource collision problem in LTE system

作　　者：高继珂[1] 张德民[1] 

机构地区：[1]重庆邮电大学移动通信重点实验室,重庆400065

出　　处：《电子技术应用》2013年第7期103-105,113,共4页Application of Electronic Technique

基　　金：国家科技重大专项项目(2009ZX03002-009)

摘　　要：调度是LTE(长期演进)系统中基站为每个用户分配资源的重要环节和关键技术。针对LTE系统中的网络电话(VoIP)、视频流等业务,LTE提出了一种新型的调度方式——半静态调度。在资源调度中上行资源更为宝贵,针对上行半静态混合重传(HARQ)过程中可能存在的资源碰撞问题,通过对半静态调度周期以及半静态授权起始位置的研究,得出了不同配置下具有针对性的上行周期,并提出了一种延迟发送碰撞进程的解决方案,减少了资源碰撞,有效提高了系统的资源利用率和稳定性。In LTE （Long Term Evolution） system, schedule is an important technology for basic station allocating resources to users. LTE system puts forward a new schedule method： semi-persistent scheduling（SPS） for services such as VoIP（Voice on Inter- net Protocol）, mediastream and so on. Uplink resource is very precious in resources scheduling. Considering the problem of resource collision in uplink semi-persistent scheduling HARQ （Hybrid Automatic Repeat request） process, this paper makes a thorough re- search on semi-persist scheduling interval and semi-persistent scheduling initial place, gets the best uplink period and designs the method that delaying the transmission of collision process. The result shows that the method reduces the problem of resource colli- sion, improves resource utilization rate and makes an improvement on system stability.

关 键 词：半静态调度 混合重传 半静态调度周期 

分 类 号：TN929.5[电子电信—通信与信息系统]