soft handoff

During the soft handoff of WCDMA, there are mainly two prob ˉ lems in implementing the conventional downlink power control schemes. They are the unbalance of the bases transmitted powers and the increase of downlink interference.

在WCDMA的软切换中，传统下行链路功率控制方案的实现主要存在两个问题：基站发射功率的失衡和下行链路干扰的增大。

If there is no idle channel when the handoff requests arrive the cell, it will borrow channels from stationary calls participating in soft handoff and allocate the borrowed channels to handoff requests by moving calls.

当切换请求到达蜂窝时，如果没有空闲信道，就将从参与软切换的静止呼叫借用一信道，并将借用的信道分配给移动呼叫的切换请求。

When repeater is introduced to CDMA system, it will cause phase confusion of base station short code, severe pilot channel pollution, and it will exacerbate unnecessary soft handoff. Even it will result in network paralysis.

引入直放站后，导致服务区内基站短码相位混乱，导频污染严重，网络优化工作困难，同时加大了不必要的软切换，甚至可能导致移动网络瘫痪。

Soft Handoff in Multiservice CDMA Mobile Communication Systems

CDMA移动通信系统中多业务软切换的研究

This paper discusses the management of resource for soft handoff in CDMA network, and analyses several conditions for network running, thereout gives a method support dynamic criticality.

讨论了CDMA网络中软切换的资源分配，分析了网络工作过程中的几种情况，并提出动态优先级的方法。

First this paper introduces three handoff schemes in Cellular IP, of which we describe semi-soft handoff in details.

该文首先介绍了Cellular IP的三种切换方案，尤其详细介绍了半软切换。

High-performance Soft Handoff Technology in ZTE's WCDMA System

中兴通讯WCDMA系统高性能的软切换技术

The performance of the soft handoff is determined by the values of its parameters to a great extent.

软切换的性能在很大程度上由其参数取值决定。