System and method of supporting packet-switched handover

摘要

A system and method of supporting packet-switched handover of a mobile station (MS) from a GERAN/UTRAN cell to a Generic Access Network (GAN) cell within a GAN. If the MS is within coverage of the GAN cell, the MS registers within the GAN, triggering initiation of the packet-switched handover from the GERAN/UTRAN cell to the GAN cell. A preparation phase is then conducted for executing the packet-switched handover. The preparation phase includes identifying the MS context as part of the preparation phase and activating the GA-PSR TC towards the MS. Next, the packet-switched handover is executed, resulting in the MS switching to GAN mode. The MS then begins transferring packets via the GAN cell. The system and method also supports a packet-switched handover from the GAN cell to the GERAN/UTRAN cell.

主权项

1. A method of supporting packet-switched handover of a mobile station (MS) from a first cell compatible with a first network to a Generic Access Network (GAN) cell compatible and located within a GAN, the method comprising the steps of:
receiving an indication that the MS is within coverage of the GAN cell; registering the MS within the GAN, wherein the registering further comprises
creating a MS context and identifying the MS context with an International Mobile Subscriber Identifier (IMSI) associated with the MS; triggering initiation of the packet-switched handover from the first cell to the GAN cell; conducting a preparation phase for executing the packet-switched handover, wherein
the step of conducting the preparation phase for executing the packet-switched handover includes identifying the MS context, based on the IMSI associated with the MS, that relates to a packet-switched (PS) Handover preparation phase request and activating a Generic Access-Packet-switched Resources (GA-PSR) Transport Channel from the GAN cell towards the MS; sending a handover message to the MS indicating the MS is to switch to the GAN.