Method and system for use in a connected state handoff of an access terminal

Abstract

A method of sending reset message sequence number is provided. During a connected state handoff of an access terminal (AT) between a source access network (AN) and a target AN, the source AN sends a reset message sequence number of the AT to the target AN. The source AN adds the reset message sequence number of the AT to the message sent to the target AN. Thereby, the problem in the existing systems that, the source AN cannot send the reset message sequence number of the AT to the target AN, and thus the target AN cannot perform a reset process on the AT when the AT is switched from the source AN to the target AN is thus solved. An access network (AN) and a communication system are also provided.

1 . An access network (AN) for a connected state handoff of an access terminal (AT), comprising a sending device and a receiving device, wherein
 the sending device is configured to send an A16-Session Transfer Request Message to another AN;   the receiving device is configured to receive an A16-Session Transfer Response message from the other AN; and   the sending device is further configured to send an A16-Session Transfer Complete Message to the other AN;   wherein the A16-Session Transfer Complete Message carries a reset message sequence number of the AT.   
     
     
         2 . The access network according to  claim 1 , wherein an Information Element of the A16-Session Transfer Complete Message comprises a session state information (SSI), and the SSI carries the reset message sequence number of the AT. 
     
     
         3 . The access network according to  claim 1 , wherein the A16-Session Transfer Complete Message comprises a new Information Element, and the Information Element carries the reset message sequence number of the AT. 
     
     
         4 . The access network according to  claim 1 , wherein the other AN is further configured to update the reset message sequence number by adding one to the reset message sequence number, and then perform a reset process on the AT according to the updated reset message sequence number. 
     
     
         5 . An access network (AN) for a connected state handoff of an access terminal (AT), comprising a processor, wherein
 the processor is configured to send an A16-Session Transfer Request Message to another AN; receive an A16-Session Transfer Response message from the other AN; and send an A16-Session Transfer Complete Message to the other AN;   wherein the A16-Session Transfer Complete Message carries a reset message sequence number of the AT.