Handoff

Handoff 切换

CDMA术语

从一个基站向另一个基站转移用户站通信之动作。硬切换的特点是，通信信道短暂中断。软切换的特点是，一个以上的基站同时与同一个用户站保持通信。

Handoff: transfer a call or data session from one channel to another, or from one BS to another, or from one MSC to another.

Handover: the process of transferring a call

Hard handover: the process needs to drop the call for a short time, e.g., GSM handover

Soft handover: MS simultaneously use multiple BS, no need to drop the call when adding new BS, e.g., CDMA system