Patent ID: 7961680
Filing Date: 2011-06-14
Classification: H04L,H04W

Abstract:
1. A method for a user equipment (UE) to transmit an uplink signal, the method comprising: receiving a first downlink control channel identified by a temporary cell identifier (Temporary C-RNTI) from a base station, the first downlink control channel comprising a first uplink grant signal having a new data indicator (NDI) with a first value; receiving a second downlink control channel identified by a cell identifier (C-RNTI) from the base station, the second downlink control channel comprising a second uplink grant signal having the NDI with a second value; determining if the NDI with the second value has been toggled compared to the NDI previously received from the base station, wherein the UE ignores the NDI with the first value received through the first downlink control channel identified by the temporary cell identifier (Temporary C-RNTI); and transmitting the uplink signal based on the determining.