Patent ID: 8509180

Claim:
A method for wireless communication handoff, the method comprising: transmitting, by a target cell, a dedicated Random Access Channel (RACH) preamble and cell information to a source cell; receiving, at the target cell, a RACH communication from a user equipment (UE) comprising the dedicated RACH preamble to start communication with the target cell; and transmitting, by the target cell, an uplink grant accompanying a handover message in response to receiving the RACH communication, wherein transmitting the uplink grant comprises allocating uplink resources based on a number of Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) for one or more configured Data Radio Bearers (DRBs) in a PDCP queue to allow for receiving a PDCP status message for the one or more configured DRBs and a Buffer Status Report (BSR).