Relay Selection Method and Apparatus and System

Abstract

A relay selection method and apparatus and a system. The method includes relay equipment broadcasts relay discovery information, the relay discovery information including identifier information (a relay UE ID) of the relay equipment and identifier information (a cell ID) of a serving cell of the relay equipment, so that remote terminal receiving the relay discovery information selects relay equipment according to the relay discovery information or transmits relay information of discovered relay equipment to an eNB, thus the eNB may select relay equipment for the remote terminal. With certain embodiments, the serving cell may learn a cell where a relay to which the terminal accesses is located, so as to perform configuration for the terminal or perform path switching of downlink data.

What is claimed is: 
     
         1 . A relay selection apparatus, applicable to a remote terminal, the apparatus comprising:
 a transmitter configured to transmit request information to a relay equipment for unicast traffic communication with a serving cell of the relay equipment;   a receiver configured to receive relay discovery information transmitted by relay equipment, the relay discovery information including a first identifier (ID) of the relay equipment and a second identifier (ID) of the serving cell of the relay equipment; and   a processor configured to measure sidelink channel quality for selection of the relay equipment,   wherein, the processor is further configured to report a first ID of the selected relay equipment, a second cell ID of the serving cell where the selected relay equipment is located, and a measurement result corresponding to the selected relay equipment to a base station.   
     
     
         2 . The apparatus according to the  claim 1 , wherein the second identifier (ID) of the serving cell is a cell identifier (ID) of the serving cell of the relay equipment, a cell global identifier of the serving cell of the relay equipment, a physical cell identifier of the serving cell of the relay equipment, or other IDs identifying the serving cell of the relay equipment.