Data exchange method and apparatus

1. A data exchange apparatus, comprising:

a transmitter configured to send, to a secondary base station, a request for setting up an interface that is capable of bidirectional signaling communication;

a receiver configured to receive a response for setting up the interface from the secondary base station; and

a processor coupled to the receiver and the transmitter and configured to perform bidirectional signaling exchange with the secondary base station using the interface,

wherein the transmitter is further configured to:

send a downlink transport network layer (TNL) address and a General Packet Radio Service Tunneling Protocol tunnel endpoint identifier (GTP TEID) of the secondary base station to a user plane entity using a mobility management entity (MME); and

send an uplink TNL address and a GTP TEID of the user plane entity to the secondary base station.

2. A data exchange apparatus, comprising:

a receiver configured to receive, from a primary base station, a request for setting up an interface that is capable of bidirectional signaling communication;

a transmitter configured to send a response for setting up the interface to the primary base station; and

a processor coupled to the receiver and the transmitter and configured to perform bidirectional signaling exchange with the primary base station using the interface,

wherein the receiver is further configured to:

receive an uplink transport network layer (TNL) address and a General Packet Radio Service Tunneling Protocol tunnel endpoint identifier (GTP TEID) of a user plane entity sent by the primary base station, and

wherein the transmitter is further configured to:

send, to the user plane entity, received uplink data from a user equipment (UE); and

send, to the UE, received downlink data from the user plane entity.

3. A data exchange method, comprising:

sending, by a primary base station to a secondary base station, a request for setting up an interface that is capable of bidirectional data communication;

receiving, by the primary base station, a response for setting up the interface from the secondary base station;

transmitting, by the primary base station, a first internet protocol (IP) address and a first General Packet Radio Service Tunneling Protocol tunnel endpoint identifier (GTP TEID) of the primary base station to the secondary base station;

transmitting, by the primary base station, a second IP address and a second GTP TEID of the primary base station to a user plane entity;

receiving, by the primary base station, uplink data according to the first IP address and the first GTP TEID; and

receiving, by the primary base station, downlink data according to the second IP address and the second GTP TEID.

4. The method of claim 3 , wherein after receiving, by the primary base station, the uplink data according to the first IP address and the first GTP TEID, the method further comprises transmitting, by the primary base station, the uplink data to the user plane entity.

5. The method of claim 3 , wherein after receiving, by the primary base station, the downlink data according to the second IP address and the second GTP TEID, the method further comprises transmitting, by the primary base station, the downlink data to the secondary base station.

6. The method claim 4 , wherein after receiving, by the primary base station, the downlink data according to the second IP address and the second GTP TEID, the method further comprises transmitting, by the primary base station, the downlink data to the secondary base station.

7. A data exchange apparatus, comprising:

a transmitter configured to:

send, to a secondary base station, a request for setting up an interface that is capable of bidirectional data communication;

transmit a first internet protocol (IP) address and a first General Packet Radio Service Tunneling Protocol tunnel endpoint identifier (GTP TEID) of a primary base station to the secondary base station; and

transmit a second IP address and a second GTP TEID of the primary base station to a user plane entity; and

a receiver coupled to the transmitter and configured to:

receive a response for setting up the interface from the secondary base station;

receive uplink data according to the first IP address and the first GTP TEID; and

receive downlink data according to the second IP address and the second GTP TEID.

8. The apparatus of claim 7 , wherein the transmitter is further configured to transmit the uplink data to the user plane entity.

9. The apparatus of claim 7 , wherein the transmitter is further configured to transmit the downlink data to the secondary base station.

10. A data exchange method, comprising:

sending, to a secondary base station, a request for setting up an interface that is capable of bidirectional signaling communication;

receiving a response for setting up the interface from the secondary base station;

sending a downlink transport network layer (TNL) address and a General Packet Radio Service Tunneling Protocol tunnel endpoint identifier (GTP TEID) of the secondary base station to a user plane entity using a mobility management entity (MME);

sending an uplink TNL address and a GTP TEID of the user plane entity to the secondary base station; and performing bidirectional signaling exchange with the secondary base station using the interface.

11. A data exchange method, comprising:

receiving, from a primary base station, a request for setting up an interface that is capable of bidirectional signaling communication;

sending a response for setting up the interface to the primary base station;

receiving an uplink transport network layer (TNL) address and a General Packet Radio Service Tunneling Protocol tunnel endpoint identifier (GTP TEID) of a user plane entity from the primary base station;

sending, to the user plane entity, received uplink data from a user equipment (UE);

sending, to the UE, received downlink data from the user plane entity; and

performing bidirectional signaling exchange with the primary base station using the interface.

12. The method of claim 11 , wherein the method is implemented by a secondary base station.

13. The method of claim 12 , further comprising the secondary base station working together with the primary base station to simultaneously provide service for the UE.

14. The data exchange apparatus of claim 1 , wherein the request for setting up the interface comprises an inter-base station coordinated service identifier.

15. The data exchange apparatus of claim 14 , wherein the response for setting up the interface comprises the inter-base station coordinated service identifier.

16. The data exchange apparatus of claim 1 , wherein the response for setting up the interface comprises an inter-base station coordinated service identifier.

17. The data exchange apparatus of claim 2 , wherein the request for setting up the interface comprises an inter-base station coordinated service identifier.

18. The data exchange apparatus of claim 17 , wherein the response for setting up the interface comprises the inter-base station coordinated service identifier.

19. The data exchange apparatus of claim 2 , wherein the response for setting up the interface comprises an inter-base station coordinated service identifier.