As one of the most important technology of radio resource management (RRM), soft handover (SHO) has been used in CDMA system first, and got further application at the age of 3G.

• 软切换作为无线资源管理(RRM)中最重要的技术之一,开始运用于CDMA系统,在移动通信发展到3G时代得到了更广泛的应用。