多载波TD-SCDMA初始接入过程的优化分析

Optimization of the TD-SCDMA Initial Access Process Based on Multi-carrier

随着TD-SCDMA系统的发展,3G用户数不断地增多,将会导致移动用户在接入过程中发生碰撞和冲突,影响系统服务质量。对此,简要叙述了TD-SCDMA系统初始随机接入过程的各个流程,并通过搭建仿真平台对系统进行模拟仿真。在此基础上,通过对系统中的呼叫模型、碰撞处理机制、快速接入信道和接入信道配置进行优化分析,提出了相应的调整算法,并对比原系统对其性能进行仿真分析。仿真结果表明,采用调整的配置算法可以明显降低系统的呼损率,提高系统性能和增加系统容量。

With the development of TD-SCDMA system,the number of users has been increased,the collision and conflict would happen when the users access the system.In order to improve the quality of service,this paper describes briefly the processes of the initial random access procedure based on TD-SCDMA system,and then verifies the results by simulation of the random procedure.This article further analyzes call model,the collision mechanism and the access channel configured of the system,and proposed the correspondin...