Patent ID: 6959190

Claim:
A method for performing an intra-packet data service node (PDSN) soft handoff, comprising the steps of: (a) setting up a channel passing through a target base station controller (T-BSC), a source base station controller (S-BSC) and a PDSN by establishing a direct channel link between the S-BSC and the T-BSC in an active packet session mode; (b) performing a handoff between the S-BSC and the T-BSC without using a mobile switching center (MSC); (c) transmitting or receiving user packet data exchanged between a mobile station (MS), the S-BSC and the T-BSC to or from the PDSN through the established channel link; and (d) sending or receiving user packet data exchanged between the MS and the T-BSC to or from the PDSN through the established channel link when the handoff is completed.