Patent ID: 9155107
Filing Date: 2015-10-06
Classification: H04B,H04W

Abstract:
1. A method for random access of a Relay Node (RN), comprising: the RN monitoring Relay Physical Downlink Control Channel (R-PDCCH) and receiving a RN-dedicated random access response message according to a random access-radio network temporary identifier on the R-PDCCH, wherein the RN-dedicated random access response message contains RN-dedicated Uplink Grant information, wherein the RN-dedicated random access response message contains at least one of the following: Uplink Grant information which is used to indicate the RN to perform transmission through Relay Physical Uplink Shared Channel (R-PUSCH), handover time of switching from monitoring the PDCCH to monitoring the Relay Physical Downlink Control Channel (R-PDCCH), and a RN indication bit, wherein if the random access response message does not contain the handover time and the random access response message contains the Uplink Grant information of the R-PUSCH, then the RN will start to monitor the R-PDCCH after a predetermined time since sending through R-PUSCH; and if the random access response message does not contain the handover time and the random access response message does not contain the Uplink Grant information of the R-PUSCH, then the RN will start to monitor the R-PDCCH immediately, and wherein if the random access response message contains the handover time, then the RN will start to monitor the R-PDCCH from the system frame number and/or the subframe number, or the RN will determine the time of start to monitor the R-PDCCH according to the time when the random access response message is received within the receiving window and the time interval.