Patent ID: 7227857
Filing Date: 2007-06-05
Classification: H04W

Abstract:
1. A method for synchronizing hyper-frame numbers (HFNs) during a serving radio network subsystem (SRNS) relocation procedure, the method comprising: a wireless device transmitting a first START value to a serving radio network controller (RNC) and utilizing the first START value as a most-recently transmitted START value; initiating a SRNS relocation procedure between the wireless device, the serving RNC and a target RNC; in response to the SRNS relocation procedure, the serving RNC transmitting a SRNS relocation information container to the target RNC, the SRNS relocation information container comprising the first START value and a Latest configured core network (CN) domain value, wherein the Latest configured core network (CN) domain value indicates the first START value; in response to receiving the SRNS relocation information container, the target RNC utilizing the first START value indicated by the Latest configured CN domain value to initialize a HFN of a radio bearer (RB); in response to the SRNS relocation procedure, the wireless device re-establishing a corresponding RB and utilizing the most-recently transmitted START value to initialize a HFN of the corresponding RB; and the wireless device transmitting a response message to the target RNC on the corresponding RB.