Carstens & Cahoon, LLP
Method of performing uplink synchronization in random access procedure
A method and device for performing a contention based random access procedure by a mobile communication terminal in communication with a base station. The method according to an embodiment includes transmitting a random access preamble message to the base station; receiving a random access response from the base station, the random access response including a timing advance command; determining a status of a mobile communication terminal time alignment timer; and ignoring the timing advance command if the mobile communication terminal time alignment timer is determined to be running in the determining step.
Optis Cellular Technology, LLC
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Young Dae Sung Jun Sung Duck Seung June
Lee Park Chun Yi