Wednesday, June 30, 2010

Fast handoff

Fast handoff is a particular type of hard handoff that applies only to packet data sessions. Fast handoff allows the target PDSN to connect to an anchor PDSN where the packet data session was first established, eliminating the need to re-establish a PPP session while the packet data session is active. Fast handoff allows for early establishment of the A10 connections on the target side.

Dormant Handoff

A handoff that occurs when an MS with a dormant packet session determines that it has crossed a packet zone boundary. Dormant handoff results in A10 connection(s) being established between the target PCF and the target PDSN. A dormant handoff may require exchange of higher layer protocol messages between the MS and the PDSN, and thus, reactivation of the packet data session. Note that no air interface channels are handed off or re-configured as the result of a dormant handoff.