When a mobile moves into a different cell while a conversation is in progress, the MSC automatically transfers the call to a new channel belonging to the new base station. This process of transferring call to a new base station is called as Hand off.
- Soft Handoff
- Hard handoff
- Delayed handoff
- Queued handoff
- C/I handoff
- Mobile assissted handoff
Soft Hand off (Operational Procedure):
- The handoff from CDMA cell to CDMA cell at the same CDMA frequency is called soft hand off.
- There is no need to change from one frequency to another frequency but change from one code to another code.
- The ability to select between the instantaneous received signals from a variety of base stations in a CDMA system is called soft hand off.