Communication method and apparatus using wireless LAN access point

1. A communication method of a wireless local area network access point (WLAN AP), comprising steps of:

receiving, from a user equipment (UE), an association message including a first identifier and a second identifier corresponding to the first identifier;

storing identifiers by correlating the first identifier to be used for the WLAN AP to the UE with the second identifier to be used for an eNodeB (eNB) to identify the UE;

receiving, from the UE, a first packet including the first identifier and data;

generating a second packet including the second identifier corresponding to the first identifier and the data of the first packet; and

transmitting the second packet to the eNB.

2. The method of claim 1 , further comprising,

before the step of storing the identifier, receiving, from the eNB, the second identifier and security context to be used for a communication with the UE.

3. The method of claim 1 , further comprising,

before storing the identifier:

receiving, from the eNB, the second identifier and first security context to be used for a communication between the eNB and the UE; and

creating second security context to be used for a communication between the WLAN AP and the UE by using the first security context and a parameter of the WLAN AP.

4. The method of claim 1 , further comprising:

receiving, from the UE, the second identifier, an evolved packet system (BPS) bearer identifier, a data radio bearer (DRB) identifier, and a bearer quality of service (QoS) parameter; and

transmitting, to the eNB, the second identifier, the BPS bearer identifier, the DRB identifier, and the bearer QoS parameter.

5. A wireless local area network access point (WLAN AP) comprising:

a transceiver unit configured to:

receive, from an user equipment (UE), an association message including a first identifier and a second identifier corresponding to the first identifier;

receive, from the UE, a first packet including the first identifier and data;

and

transmit to an eNodeB (eNB) a second packet;

a storage unit configured to store the identifiers by correlating a first identifier to be used for the WLAN AP to identify UE with a second identifier to be used for an eNodeB (eNB) to identify the UE;

and

a control unit configured to, when the first packet is received, generate the second packet including the second identifier corresponding to the first identifier and the data of the first packet.

6. The WLAN AP of claim 5 , wherein before storing the first and second identifiers, the transceiver unit is further configured to receive, from the eNB, the second identifier and security context to be used for a communication with the UE.

7. The WLAN AP of claim 5 , wherein before storing the first and second identifiers, the transceiver unit is further configured to receive, from the eNB, the second identifier and first security context to be used for a communication between the eNB and the UE, and the control unit is further configured to create second security context to be used for a communication between the WLAN AP and the UE by using the first security context and a parameter of the WLAN AP.

8. The WLAN AP of claim 5 , wherein the transceiver unit is further configured to:

receive, from the UE, the second identifier, an evolved packet system (EPS) bearer identifier, a data radio bearer (DRB) identifier, and a bearer quality of service (QoS) parameter; and

transmit, to the eNB, the second identifier, the EPS bearer identifier, the DRB identifier, and the bearer QoS parameter.

9. A communication method of user equipment (UE), comprising:

receiving, from an eNodeB (eNB), information for searching a wireless local area network access point (WLAN AP);

associating with the WLAN AP, based on the information;

transmitting, to the WLAN AP, a first identifier to be used for the WLAN AP to identify the UE with a second identifier to be used for the eNB to identify the UE; and

transmitting, to the WLAN AP, a packet including the first identifier and data.

10. The method of claim 9 , further comprising:

transmitting, to the WLAN AP, a bearer setup including the second identifier, an evolved packet system (BPS) bearer identifier, and a bearer quality of service (QoS) parameter.

11. The method of claim 9 , further comprising:

acquiring first security context to be used for a communication between the eNB and the UE; and

creating second security context to be used for a communication between the WLAN AP and the UE by using the first security context and a parameter of the WLAN AP.

12. The method of claim 9 , wherein receiving the information for searching the WLAN AP from the eNB further comprises:

receiving an identifier list of the WLAN AP that is a target of search;

collecting information associated with the WLAN AP contained in the identifier list; and

transmitting, to the eNB, the collected information associated with the WLAN AP contained in the identifier list.

13. User equipment (UE), comprising:

a transceiver unit configured to:

receive, from an eNodeB (eNB), information for searching a wireless local area network access point (WLAN AP);

associate with the WLAN AP based on the information;

transmit, to the WLAN AP, a first identifier to be used for the WLAN AP to identify the UE with a second identifier to be used for the eNB to identify the UE; and

transmit, to the WLAN AP, a packet including the first identifier and data.

14. The UE of claim 13 , wherein the transceiver unit is further configured to transmit, to the WLAN AP, a bearer setup including the second identifier, an evolved packet system (EPS) bearer identifier, and a bearer quality of service (QoS) parameter.

15. The UE of claim 13 , further comprising:

a control unit configured to

acquire first security context to be used for a communication between the eNB and the UE; and

create second security context to be used for a communication between the WLAN AP and the UE by using the first security context and a parameter of the WLAN AP.

16. The UE of claim 13 , wherein the transceiver unit is further configured to:

receive an identifier list of the WLAN AP that is a target of search;

collect information associated with the WLAN AP contained in the identifier list; and

transmit, to the eNB, the collected information associated with the WLAN AP contained in the identifier list.