Method for providing broadcast service in wireless communication system, and apparatus therefor
One embodiment of the present invention relates to a method for providing, by a relay UE, a broadcast service in a wireless communication system, the method comprising the steps of: detecting a TMGI; and broadcasting TMGI announcement comprising the detected TMGI and a ProSe layer- 2 group ID corresponding to the TMGI.
1. A method of providing a broadcast service by a relay User Equipment (UE) in a wireless communication system, the method comprising:
receiving, by the relay from a remote UE, a Temporary Mobile Group Identity (TMGI) monitoring request including a service description;
transmitting, by the relay UE to the remote UE, a TMGI monitoring response including a Proximity Service (ProSe) layer-2 group ID and a TMGI Monitoring Refresh Timer;
detecting, by the relay UE, a TMGI requested to monitor based on the service description;
determining, by the relay UE, whether to provide a broadcast service to the remote UE, based on the relay UE detecting the TMGI; and
based on the relay UE determining to provide the broadcast service to the remote UE, broadcasting, by the relay UE, a TMGI announcement including the ProSe layer-2 group ID and the TMGI Monitoring Refresh Timer corresponding to the detected TMGI and the detected TMGI,
wherein the service description is related to a Multimedia Broadcast Multicast Service (MBMS),
wherein the service description includes frequency information related to the MBMS, and
wherein based on the TMGI announcement including a plurality of TMGIs, the TMGI announcement is configured to include only one PLMN (Public Land Mobile Network) ID for TMGIs having a same PLMN ID.
2. The method according to claim 1 , further comprising:
relaying, by the relay UE to the remote UE, broadcast content associated with the ProSe layer-2 group ID,
wherein the broadcast content is related to the TMGI.
3. The method according to claim 2 , wherein the ProSe layer-2 group ID is used to transmit the broadcast content to the remote UE.
4. The method according to claim 1 ,
wherein the TMGI monitoring request procedure is performed based on elapsing of the TMGI Monitoring Refresh Timer.
5. A relay User Equipment (UE) for providing a broadcast service in a wireless communication system, the relay UE comprising:
a transceiver; and
a processor that:
controls the transceiver to receive, from a remote UE, a Temporary Mobile Group Identity (TMGI) monitoring request including a service description;
controls the transceiver to transmit, to the remote UE, a TMGI monitoring response including a Proximity Service (ProSe) layer-2 group ID and a TMGI Monitoring Refresh Timer;
detects a TMGI requested to monitor based on the received service description;
determines whether to provide a broadcast service to the remote UE, based on the detection of the TMGI corresponding to the service description; and
based on the relay UE determining to provide the broadcast service to the remote UE, broadcasts a TMGI announcement including the Proximity Service layer-2 group ID and the TMGI Monitoring Refresh Timer corresponding to the detected TMGI and the detected TMGI,
wherein the service description is related to a Multimedia Broadcast Multicast Service (MBMS),
wherein the service description includes frequency information related to the MBMS, and
wherein based on the TMGI announcement including a plurality of TMGIs, the TMGI announcement is configured to include only one PLMN (Public Land Mobile Network) ID for TMGIs having a same PLMN ID.
6. The relay UE according to claim 5 , wherein the processor further relays broadcast content associated with the ProSe layer-2 group ID to the remote UE,
wherein the broadcast content is related to the TMGI.
7. The relay UE according to claim 6 , wherein the ProSe layer-2 group ID is used to transmit the broadcast content to the remote UE.
8. The relay UE according to claim 5 ,
wherein the TMGI monitoring request procedure is performed based on elapsing of the TMGI Monitoring Refresh Timer.