Method and device for relay node access

摘要

The present disclosure provides a method and device for Relay Node (RN) access, wherein the method comprises the following steps: a base station sends a downlink message to trigger the RN to switch from monitoring a Physical Downlink Control Channel (PDCCH) to monitoring an RN-dedicated Physical Downlink Control Channel (R-PDCCH), and the RN acquires time-frequency resources for an R-PDCCH from the base station, before or while receiving the downlink message. The present disclosure enables an RN to switch from transmitting according to indication on the PDCCH to transmitting according to indication on the R-PDCCH, i.e., the RN switches from being in a connection state as the UE to being in a connection state as an RN. The present disclosure makes less change to the existing flows, offering advantages of easy implementation, flexible configuration, etc.

主权项

1. A method for Relay Node (RN) access, comprising:
a base station sending a downlink message to trigger an RN to switch from monitoring a Physical Downlink Control Channel (PDCCH) to monitoring an RN-dedicated Physical Downlink Control Channel (R-PDCCH); and the RN acquiring time-frequency resources for the R-PDCCH from the base station before or while receiving the downlink message; wherein the downlink message is special signaling including RN-dedicated configuration information, or an MAC control element including RN-dedicated configuration information; wherein the special signaling including the RN-dedicated configuration information is an RRC connection reconfiguration message or newly-introduced special signaling; the MAC control element including the RN-dedicated configuration information is a newly-introduced MAC control element; and wherein the RN-dedicated configuration information further comprises: switching time of switching from monitoring the PDCCH to monitoring the R-PDCCH; the method further comprises: the RN acquires the switching time from the received downlink message and switches from monitoring the PDCCH to monitoring the R-PDCCH according to the switching time.