Patent ID: 9301215
Filing Date: 2016-03-29
CPC Classification: H04W

Claim Text:
1. A method comprising: receiving, at a user equipment, a handover command for a handover from a first cell to a second cell; determining whether the handover command includes an indication of uplink resource allocations for the second cell; in response to a determination that the handover command includes the indication of uplink resource allocations for the second cell, performing the following by the user equipment: prior to expiration of a timer initiated in response to handover, transmitting based on the uplink resource allocations for the second cell; and in response to a determination that the handover command does not include the indication of uplink resource allocations for the second cell, waiting by the user equipment for a cell radio network temporary identifier corresponding to the user equipment in a downlink signaling, upon reception of the cell radio network temporary identifier corresponding to the user equipment, transmitting on an uplink shared channel toward the second cell, and in response to the user equipment having not received the cell radio network temporary identifier corresponding to the user equipment in the downlink signaling and in response to expiration of the timer, the user equipment performs one of returning to a previous serving cell and receiving a timing advance via a random access channel.