Patent ID: 7068636
Filing Date: 2006-06-27
Classification: H04W

Abstract:
1. A method for determining the re-establishment of a Radio Link Control (RLC) entity in a wireless communications device undergoing a Serving Radio Network Subsystem (SRNS) relocation procedure with a Universal Terrestrial Radio Access Network (UTRAN), the wireless communications device supporting a Radio Resource Control (RRC) layer having a plurality of states that include: a CELL_PCH state in which no uplink communications is possible with the UTRAN, and in which the position of the wireless device is known on a cell level; and a URA_PCH state in which no uplink communications is possible with the UTRAN, and in which the position of the wireless device is known on a UTRAN Registration Area (URA) level; the method comprising: receiving, by the RRC layer, a reconfiguration procedure from the UTRAN that initiates a SRNS relocation procedure for the wireless device; transmitting, from the wireless device, confirmation information to the UTRAN in response to the reconfiguration procedure; receiving, by the RRC layer, acknowledgement that the UTRAN successfully received the confirmation information; and in response to the acknowledgement, transitioning, at the RRC layer, into the CELL_PCH state or the URA_PCH state, and re-establishing, by the RRC layer, an RLC entity supported by the wireless device to effect the SRNS relocation procedure.