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
Life of this patent
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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.
Claims11
1-16. (canceled)
A method performed by a new mobility management entity (MME) supporting tracking area update (TAU) procedure of a relay user equipment (UE), connected with one or more remote UE corresponding to a Proximity Service-enabled (ProSe-enabled) UE, in a wireless communication system, the method comprising:
- receiving a TAU request message from the relay UE;
- transmitting a context request message to an old MME associated with the relay UE, according to the TAU procedure;
- and
- receiving a context response message comprising UE context corresponding to the relay UE and the one or more remoted UE from the old MME, in response to the context response message.
A method performed by an old mobility management entity (MME) supporting tracking area update (TAU) procedure of a relay user equipment (UE), connected with one or more remote UE corresponding to a Proximity Service-enabled (ProSe-enabled) UE, in a wireless communication system, the method comprising:
- receiving a context request message from a new MME associated with the relay UE, according to the TAU procedure;
- and
- transmitting a context response message comprising UE context corresponding to the relay UE and the one or more remoted UE to the new UE, in response to the context response message.
A new mobility management entity (MME), associated with a relay user equipment (UE), supporting tracking area update (TAU) procedure of the relay UE, connected with one or more remote UE corresponding to a Proximity Service-enabled (ProSe-enabled) UE, in a wireless communication system, the new MME comprising:
- a transmitter;
- a receiver;
- and
- a processor connected to the transmitter and the receiver,
- wherein the processor:
- receives a TAU request message from the relay UE;
- transmits a context request message to an old MME associated with the relay UE, according to the TAU procedure;
- and
- receives a context response message comprising UE context corresponding to the relay UE and the one or more remoted UE from the old MME, in response to the context response message.
An old mobility management entity (MME), associated with a relay user equipment (UE), supporting tracking area update (TAU) procedure of the relay UE, connected with one or more remote UE corresponding to a Proximity Service-enabled (ProSe-enabled) UE, in a wireless communication system, the old MME comprising:
- receiving a context request message from a new MME associated with the relay UE, according to the TAU procedure;
- and
- transmitting a context response message comprising UE context corresponding to the relay UE and the one or more remoted UE to the new UE, in response to the context response message.
- a transmitter;
- a receiver;
- and
- a processor connected to the transmitter and the receiver,
- wherein the processor:
- receives a context request message from a new MME associated with the relay UE, according to the TAU procedure;
- and
- transmits a context response message comprising UE context corresponding to the relay UE and the one or more remoted UE to the new UE, in response to the context response message.
Dependencies are inferred from the claim text.