Patent ID: 7447181

Claim:
A mobile station executed method comprising: entering a new cell; generating a cell change logical link control packet data unit massage for informing the network of the location of the mobile station in the new cell; buffering the cell change logical link control packet data unit message into a logical link control packet data unit message transmit queue such that it is selected for transmission prior to any buffered packet data units that were present before the mobile station entered the new cell; a radio link control/medium access control unit of a mobile station initiating an uplink temporary block flow in the new cell; indicating to a radio link control/medium access control of the network if an ACK or an UNACK radio link control mode is to be used when transmitting the cell change packet data unit message; and transmitting the buffered cell change packet data unit before any of the buffered packet data units that were present before the mobile station entered the new cell.