摘要
LTE-A系统通过采用CoMP技术对多个小区进行联合调度和协作传输,降低小区间干扰,提高小区边缘用户的性能和扇区吞吐量。随机接入过程是移动通信系统中UE与网络建立连接、进行通信的首要过程,必将受到这种新的传输模式的影响。本文对其接入场景与接入流程、资源请求过程的资源分配问题、及部分切换过程进行探讨,提出这些过程在CoMP环境下的演进方向。
LTE-A system adopts CoMP technology to improve the performance of cell edge users and sector throughput,through joint scheduling and cooperative transmission of several cells and reducing the inter-cell interference.Random access procedure is a very important procedure in the mobile communication system,which establishes a connection between UE and network.It will be affected by the new transmission mode.This paper discusses the scenes and process of access,the resource allocation problem in resource request stage,and the handoff process in some cases,to put forward the evolution of these processes in CoMP environment.
出处
《电信工程技术与标准化》
2011年第3期64-68,共5页
Telecom Engineering Technics and Standardization
基金
国家科技重大专项项目(2009ZX03003-003-01)
中兴通讯产学研合作项目(2010ZTE01-01-4)
关键词
协作多点传输
随机接入过程
资源分配
coordinated multi-point transmission
random access procedure
resource allocation
