| 摘要 |
A packet switching (PS) domain handover method and system for a GSM terminal. The method comprises: a terminal protocol stack receiving a handover command from the network side, and notifying the physical layer to release a physical channel with a current cell; the terminal protocol stack sending a synchronization request to the physical layer; after receiving a synchronization acknowledgement message fed back, the terminal protocol stack sending to the physical layer a residence request which carries a system message about a handover target cell from the network side; the physical layer residing in the target cell according to the system message; after receiving a residence acknowledgement message of the physical layer, the terminal protocol stack sending to the physical layer a handover request which carries a handover type and a TA value range; the physical layer judging whether to continue PS handover or not according to a parameter carried in the handover request and the stored TA value, and sending a judgment result to the terminal protocol stack; and when continuing the PS handover, the terminal protocol stack instructing the physical layer to establish a physical channel with the target cell. |
