1、 I 摘 要 WCDMA 技术是最为成熟, 在全球也最为普及的 3G 技术。 本课题主要研究 WCDMA 中的 软切换技术。因软切换是 WCDMA 系统的关键技术之一,也是无线资源管理与优化的重点。 软切换算法和相关参数的设置直接影响着系统的容量和服务质量,所以软切换技术关系 到整个系统的运行。 本文在 WCDMA 系统内对软切换技术进行了全面的分析和研究,包括把其与其他切换 对比, 软切换在网络规划和优化中的设计, 然后从信令层详细分析了其实现的具体过程, 算法以及参数设置的影响。 信道质量和手机的移动速度是影响软切换的重要因素,软切换技术的好坏也直接影 响切换的成功率以及通话的质量,因此未
2、来不断更新和提高软切换技术显得非常重要, 这也是很多通信工作者一直不懈努力的方向。 关键词关键词: WCDMA; 软切换; 网络优化; 参数设置 毕业设计(论文) ABSTRACT II ABSTRACT WCDMA is Maturest and the Most popular of 3G in the world. This topic mainly studies soft handover in WCDMA. Soft handover is one of the key techniques in WCDMA system. It is the emphasis of radio
3、resource management (RRM) and optimization. The soft handover algorithm and correlative parameters setting have an immediate effect on the system capacity and quality of service.So soft handover is very important in WCDMA. This article has carried on the comprehensive analysis and the research of th
4、e WCDMA system to soft handover, Including cuts its and other contrast, planning and optimized design of soft handover in network,then from signaling level multianalysis the concrete process which it realized, the algorithm as well as the parameter establishment influence. The channel quality and handsets traveling speed is the important affects of the soft handover. Soft handover technology quality also immediately influence cut success ratio as well as telepho