Method for performing device-to-device direct communication in wireless communication system and device therefor
AssigneeLG Electronics Inc.
InventorsTaehun Kim, Laeyoung Kim, Sungduck Chun, Jaehyun Kim
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Abstract
Disclosed are a direct communication method and ProSe-enabled UE, the direct communication method receiving an identifier of MME supporting relay UE from the relay UE in which a direct connection to remote UE is established, and transmitting, to a base station supporting the relay UE, a TAU request message for requesting the MME supporting the relay UE to manage context information of the remote UE together, and the identifier of MME.
Claims10
A method performed by a mobility management entity (MME), presently associated with a relay user equipment (UE), supporting a tracking area update (TAU) procedure in a wireless communication system, the method comprising:
- receiving a TAU request message from the relay UE, which is connected with one or more remote UEs;
- transmitting a context request message to an MME previously associated with the relay UE, based on the TAU procedure;
- and
- when (i) the one or more remote UEs communicate with a network via the relay UE, and (ii) the one or more remote UEs receive relay traffic from the relay UE based on a packet data network (PDN) connection only used for the relay traffic, receiving a context response message comprising UE context information for both the relay UE and the one or more remote UEs from the MME previously associated with the remote UE, in response to the context request message.
A method performed by a mobility management entity (MME), previously associated with a relay user equipment (UE), supporting a tracking area update (TAU) procedure in a wireless communication system, the method comprising:
- receiving a context request message from a MME presently associated with the relay UE, which is connected with one or more remote UEs, based on the TAU procedure;
- and
- when (i) the one or more remote UEs communicate with a network via the relay UE, and (ii) the one or more remote receive relay traffic from the relay UE based on a packet data network (PDN) connection only used for the relay traffic, transmitting a context response message comprising UE context information for both the relay UE and the one or more remote UEs to the MME presently associated with the remote UE, in response to the context request message.
A mobility management entity (MME), presently associated with a relay user equipment (UE), supporting a tracking area update (TAU) procedure in a wireless communication system, the MME comprising:
- a transmitter;
- a receiver;
- and
- a processor, operatively connected to the transmitter and the receiver,
- wherein the processor:
- controls the receiver to receive a TAU request message from the relay UE which is connected with one or more remote UEs;
- controls the transmitter to transmit a context request message to a MME previously associated with the relay UE, based on the TAU procedure;
- and
- when (i) the one or more remote UEs communicate with a network via the relay UE, and (ii) the one or more remote UEs receive relay traffic from the relay UE based on a packet data network (PDN) connection only used for the relay traffic, controlling the receiver to receive a context response message comprising UE context information for both the relay UE and the one or more remote UEs from the MME previously associated with the remote UE, in response to the context request message.
A mobility management entity (MME), previously associated with a relay user equipment (UE), supporting a tracking area update (TAU) procedure in a wireless communication system, the old MME comprising:
- a transmitter;
- a receiver;
- and
- a processor operatively connected to the transmitter and the receiver,
- wherein the processor:
- controls the receiver to receive a context request message from a MME presently associated with the relay UE which is connected with one or more remote UEs, based on the TAU procedure;
- and
- when (i) the one or more remote UEs communicate with a network via the relay UE, and (ii) the one or more remote UEs receive relay traffic from the relay UE based on a packet data network (PDN) connection only used for the relay traffic, controls the transmitter to transmit a context response message comprising UE context information for both the relay UE and the one or more remote UEs to the MME presently associated with the remote UE, in response to the context request message.
Dependencies are inferred from the claim text.