Patent ID: 8837438
Filing Date: 2014-09-16
Classification: H04W

Abstract:
1. A method of performing contention resolution associated with a random access procedure between a mobile communication terminal and a base station, comprising: transmitting, by the mobile communication terminal, a random access preamble; receiving, by the mobile communication terminal, a random access response; transmitting, by the mobile communication terminal, an uplink message containing a cell-radio network temporary identity (C-RNTI) of the mobile communication terminal and starting a contention resolution timer once the uplink message is transmitted; receiving, by the mobile communication terminal, a physical downlink control channel (PDCCH) transmission; and considering, by the mobile communication terminal, the contention resolution to be successful and stopping the contention resolution timer if the PDCCH transmission is addressed to the C-RNTI and contains an uplink (UL) grant.