JP2019106736A - Data exchange method and device - Google Patents

Abstract

To provide a data exchange method and device.SOLUTION: A data exchange method includes the steps of: receiving a first message from a primary base station by a secondary base station or receiving relation information of both base stations composed of an operation, administration, and maintenance system (OAM); transmitting an S1 interface setup request to the primary base station; receiving an S1 interface setup response from the primary base station; and executing exchange with the primary base station using an S1 interface. The first message is used to notify setup of the S1 interface. An interface between both base stations may be used to execute data transfer with an SGW or the secondary base station may be used to directly execute data transfer with the SGW. This achieves coordinated servicing by both base stations, thereby improving service quality to user equipment (UE).SELECTED DRAWING: Figure 1

Description

  The present invention relates to the field of mobile communications, and in particular to data exchange methods and devices.

  With the development of communication technology and the increasing number of intelligent terminals, the service traffic conveyed by wireless networks is rapidly increasing. In order to cope with such increases and improve the experience of users of wireless terminals, wireless networks need to provide users with greater bandwidth and faster service rates.

  Like Long Term Evolution (LTE) systems, like Coordinated Multi-Point transmission / reception (CoMP) and Carrier Aggregation (CA) to improve performance. Technologies have been introduced in Release 10 and Release 11.

  Inter-eNB CoMP (inter eNB CoMP), carrier aggregation between evolved Node Bs (inter-evolved Node B CA, inter eNB CA) and small cell enhancement (Small Cell Enhancement) for the purpose of providing better quality of service to users Topics such as are further proposed in the discussion of Release 12 of The 3rd Generation Partnership Project (3GPP).

  In all the aforementioned techniques, at least two base stations need to serve the same UE in order to increase the data exchange rate between the user equipment (User Equipment, UE) and the network side. Therefore, there is an urgent need for a method for realizing that at least two base stations can simultaneously provide service to one piece of UEs.

  With this in mind, data exchange methods and apparatus are provided to enable at least two base stations to work together to provide service to the same piece of UEs.

  According to a first aspect, a data exchange method is provided, the method comprising: receiving by a secondary base station a first message sent by a primary base station, or an operation, management and maintenance system (OAM) Receiving relationship information between the secondary base station and the primary base station, wherein the first message is used to notify the secondary base station to set up the S1 interface Sending an S1 interface setup request to the primary base station by the secondary base station, receiving an S1 interface setup response sent by the primary base station, and exchanging with the primary base station by using the S1 interface Secondary base It is executed by.

  In a first possible method of the first aspect, the first message conveys an inter-eNB coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or the S1 interface setup response is , Transmit an inter-base station coordinated service identifier.

  According to one of the previously mentioned possible realization methods, in the second feasible method of the first aspect, preferably, the first message is that the primary base station, the secondary base station from OAM and the primary base station After being received by the primary base station.

  According to one of the aforementioned possible implementations, in a third feasible method of the first aspect, the method further comprises: Internet Protocol (IP) address of primary base station and tunnel endpoint identifier (TEID) ) By the secondary base station. Performing the exchange with the primary base station by the secondary base station by using the S1 interface includes: receiving uplink data sent by the user equipment (UE) by the secondary base station as primary base station Transmitting the uplink data to the serving gateway (SGW) and / or by the secondary base station, by the primary base station, down from the SGW. Receiving link data and transmitting downlink data to the UE.

  According to one of the aforementioned possible implementations, in a fourth possible method of the first aspect, after receiving the S1 interface setup response sent by the primary base station, the method further comprises: Secondary Transmitting the downlink transport network layer (TNL) address of the base station and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) by the secondary base station to the primary base station, whereby the mobility management entity By using (MME), the primary base station transmits the downlink TNL address and GTP TEID of the secondary base station to the SGW, and the secondary base station transmits the uplink TNL address of the SGW transmitted by the primary base station And GTP TEID It received. The method further includes: transmitting the received uplink data transmitted by the UE to the SGW by the secondary base station, and transmitting the received downlink data transmitted by the SGW to the UE by the secondary base station To do.

  According to a second aspect, a data exchange method is provided, the method comprising: transmitting a first message by a primary base station to a secondary base station, the first message setting up an S1 interface Used to notify the secondary base station, transmitting, receiving by the primary base station the S1 interface setup request sent by the secondary base station, transmitting the S1 interface setup response to the secondary base station, and Performing exchange with the secondary base station by using the S1 interface by the primary base station.

  In a first possible method of the second aspect, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or an S1 interface setup response Transmits an inter-base station coordinated service identifier.

  According to one of the previously mentioned possible realization methods, in a second possible method of the second aspect, transmitting the first message by the primary base station to the secondary base station comprises: by the primary base station Receiving relationship information between the secondary base station and the primary base station from the operation, management, and maintenance system (OAM), and transmitting a first message to the secondary base station.

  According to one of the previously mentioned possible implementations, in a third feasible method of the second aspect, the method further comprises: internet protocol (IP) address of the primary base station and tunnel endpoint identifier (TEID) Sending the primary base station to the secondary base station). Performing the exchange with the secondary base station by the primary base station by using the S1 interface includes: uplink data transferred by the secondary base station from the user equipment (UE) by the primary base station Receiving and transmitting uplink data to the serving gateway (SGW) by the primary base station and / or forwarding downlink data from the SGW to the secondary base station, thereby the secondary base station The station sends downlink data to the UE.

  According to one of the previously mentioned possible realization methods, in a fourth possible method of the second aspect, after transmitting the S1 interface setup response to the secondary base station, the method further comprises: by the secondary base station Transmitting the received downlink transport network layer (TNL) address of the secondary base station and the received general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW by the primary base station; Transmitting the uplink TNL address and GTP TEID of the SGW to the secondary base station by the primary base station, whereby the secondary base station transmits the received uplink data transmitted by the UE to the SGW , Sent by SGW, received Sending a the downlink data to the UE.

  According to a third aspect, a data exchange method is provided, the method comprising: transmitting an X2 handover request message to a secondary base station by a primary base station, the X2 handover request message being a primary base station Transmitting, including the tunnel address information allocated to the user equipment (UE) by the UE, receiving by the primary base station the X2 handover request response sent by the secondary base station, and using the X2 interface , Exchange data with the secondary base station by the primary base station.

  In a first possible method of the third aspect, the tunnel address information comprises: transport network layer (TNL) address and generic packet radio service tunneling protocol tunnel endpoint identifier (TNL) address assigned to the UE by the primary base station GTP TEID).

  According to one of the aforementioned possible implementations, in a second feasible method of the third aspect, the X2 handover request message conveys an inter-base station coordinated service identifier and / or an X2 handover The request response carries an inter-base station coordinated service identifier.

  According to one of the aforementioned possible implementations, in a third feasible method of the third aspect, the method further comprises: X2 interface association or updating the GTP tunnel associated with the UE by the primary base station Or releasing and sending an update or release message to the secondary base station, whereby the secondary base station updates or releases the X2 interface association or the general packet radio service tunneling protocol GTP tunnel of the UE .

  According to one of the previously mentioned possible implementations, in a fourth possible method of the third aspect, the update or release message conveys an inter-base station coordination service identifier and a bearer identifier.

  According to a fourth aspect, there is provided a data exchange method, the method comprising: receiving by a secondary base station an X2 handover request message sent by a primary base station, the X2 handover request message comprising Receiving, including tunnel address information allocated by the primary base station to a user equipment (UE), sending an X2 handover request response to the primary base station, and using the X2 interface, a secondary base station Exchange data with the primary base station by

  In a first possible method of the fourth aspect, the tunnel address information comprises: a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (TNL) address assigned to the UE by the primary base station GTP TEID).

  According to one of the aforementioned possible implementations, in the second feasible method of the fourth aspect, the X2 handover request message conveys an inter-base station coordinated service identifier and / or an X2 handover The request response carries an inter-base station coordinated service identifier.

  According to one of the previously mentioned possible implementations, in a third feasible method of the fourth aspect, the method further comprises: receiving by the secondary base station an update or release message sent by the primary base station And updating or releasing the X2 interface association or the UE General Packet Radio Service Tunneling Protocol GTP tunnel by the secondary base station.

  According to one of the previously mentioned possible implementations, in a fourth possible method of the fourth aspect, the update or release message conveys an inter-base station coordination service identifier and a bearer identifier.

  According to a fifth aspect, a data exchange method is provided, the method comprising: transmitting an X3 interface setup request by a primary base station to a secondary base station, wherein the X3 interface is capable of two-way data communication. Having, transmitting, receiving by the primary base station an X3 interface setup response transmitted by the secondary base station, and performing bi-directional data exchange with the secondary base station by using the X3 interface by the primary base station To do.

  In a first possible method of the fifth aspect, the request to set up the X3 interface conveys an inter-base station coordination service identifier and / or the response setting up the X3 interface conveys an inter-base station coordination service identifier .

  According to one of the previously mentioned possible implementations, in a second possible method of the fifth aspect, the X3 interface comprises: S1 interface.

  According to one of the previously mentioned possible implementations, in a third feasible method of the fifth aspect, the method further comprises: internet protocol (IP) address of the primary base station and tunnel endpoint identifier (TEID) Sending the primary base station to the secondary base station). Performing bidirectional data exchange with the secondary base station by the primary base station by using the X3 interface includes: uplink data transmitted by the secondary base station transmitted by the user equipment (UE) Receiving by the primary base station, and transmitting by the primary base station the downlink data sent by the serving gateway (SGW) to the secondary base station, which causes the secondary base station to go down to the UE. Send link data.

  According to one of the previously mentioned possible realization methods, in a fourth possible method of the fifth aspect, after receiving by the primary base station the X3 interface setup response sent by the secondary base station, the method further comprises Including: Downlink Transport Network Layer (TNL) address of the secondary base station and General Packet Radio Service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID), which was sent to the SGW by using the Mobility Management Entity (MME) Of the SGW's uplink TNL address and GTP TEID by the primary base station to the secondary base station, whereby the secondary base station was transmitted by the UE, Appli received Sends Kudeta the SGW, and transmits transmitted by SGW, the downlink data received to the UE.

  According to a sixth aspect, a data exchange method is provided, the method comprising: receiving an X3 interface setup request by a secondary base station, the X3 interface having the capability of bi-directional data communication, receiving Transmitting the X3 interface setup response to the primary base station by the secondary base station, and performing bi-directional data exchange with the primary base station by using the X3 interface by the secondary base station.

  In the first feasible method of the sixth aspect, the request to set up the X3 interface transmits an inter-base station cooperation service identifier, and / or the response to set up the X3 interface transmits an inter-base station cooperation service identifier. .

  According to one of the previously mentioned possible implementations, in a second possible method of the sixth aspect, the X3 interface comprises: S1 interface.

  According to one of the previously mentioned possible implementations, in a third feasible method of the sixth aspect, the method further comprises: Internet Protocol (IP) address of primary base station and tunnel endpoint identifier (TEID) ) By the secondary base station. Performing a bi-directional data exchange with the primary base station by the secondary base station by using the X3 interface includes: uplink data from the user equipment (UE) to the primary base station by the secondary base station Transmitting, whereby the primary base station transmits uplink data to the serving gateway (SGW) and also receives downlink data from the SGW transmitted by the primary base station by the secondary base station And transmitting downlink data to the UE.

  According to one of the previously mentioned possible realization methods, in a fourth possible method of the sixth aspect, after transmitting the X3 interface setup response by the secondary base station to the primary base station, the method further comprises: Receiving by the secondary base station the SGW uplink transport network layer (TNL) address and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) sent by the primary base station, sent by the UE Transmitting uplink data received to the SGW, and transmitting downlink data received from the SGW to the UE.

  According to a seventh aspect, a data exchange method is provided, the method comprising: receiving by a mobility management entity (MME) a first message sent by a primary base station, the first message being a user Receiving, used to request a secondary base station to cooperate with a primary base station to serve a device (UE), sending a second message to the secondary base station , A second message is used to request the secondary base station to cooperate with the primary base station to serve the UE, transmitting, the first response returned by the secondary base station To receive, the first response is to send to the primary base station in cooperation with the primary base station to serve the UE. Transmitting and receiving information that the base station has agreed, and sending a second response to the primary base station, to provide service to the UE, the primary base station and the secondary base; Cooperating with the station, transmitting.

  In a first possible method of a seventh aspect, after receiving the first response returned by the secondary base station, the method further comprises: serving gateway (SGW) corresponding to the UE with the address information of the secondary base station And notify the secondary base station of the address information of the SGW, whereby the secondary base station performs data exchange with the SGW for the UE.

  According to one of the previously mentioned possible realization methods, in the second feasible method of the seventh aspect, the address information of the secondary base station comprises: transport network layer (TNL) address of the secondary base station and General Packet Radio Services Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID). The SGW address information includes: SGW TNL address information and GTP TEID.

  According to an eighth aspect, there is provided a data exchange method, the method comprising: receiving by a secondary base station a second message sent by a mobility management entity (MME), the second message being Receiving to be used to request the secondary base station to cooperate with the primary base station to serve the UE, and transmitting a first response to the MME by the secondary base station The first response is then used to indicate the information that the secondary base station has agreed to cooperate with the primary base station to serve the UE, whereby the MME is the second base station to the primary base station. The second base station cooperates with the secondary base station to send a response and the second response to serve the UE. And used to notify, sending.

  In a first possible method of an eighth aspect, after transmitting the first response by the secondary base station to the MME, the method further comprises: the address of the serving gateway (SGW) corresponding to the UE sent by the MME Receiving information by the secondary base station and performing data exchange with the SGW for the UE according to the address information of the SGW.

  According to one of the previously mentioned possible realization methods, in a second feasible method of the eighth aspect, the address information of the SGW includes the following: transport network layer (TNL) address of the SGW and general packet radio service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID).

  According to one of the previously mentioned possible realization methods, in the third realizable method of the eighth aspect, performing data exchange with the SGW for the UE by the secondary base station according to the address information of the SGW does the following Including: transmitting uplink data received from the UE to the SGW by the secondary base station, and transmitting downlink data received from the SGW to the UE.

  According to a ninth aspect, a data exchange apparatus is provided, wherein the apparatus is a secondary base station, the apparatus comprising: a receiving unit, a transmitting unit and an exchanging unit. The receiving unit receives the first message sent by the primary base station, or receives the relationship information between the secondary base station and the primary base station configured by the operation, management, and maintenance system (OAM). As configured, the first message is used to notify the secondary base station to set up the S1 interface. The transmitting unit is configured to transmit the S1 interface setup request to the primary base station. The receiving unit is configured to receive the S1 interface setup response sent by the primary base station. The switching unit is configured to perform switching with the primary base station by using the S1 interface.

  In a first possible method of an ninth aspect, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or an S1 interface setup response Transmits an inter-base station coordinated service identifier.

  In accordance with one of the aforementioned possible realization methods, in the second realizable method of the ninth aspect, the first message is transmitted from the primary base station to the secondary base station related information from the OAM and the primary base station. After being received by the primary base station.

  According to one of the aforementioned possible implementations, in a third feasible method of the ninth aspect, the receiving unit is an internet protocol (IP) address of the primary base station and a tunnel transmitted by the primary base station. It is configured to receive an endpoint identifier (TEID). The switching unit is configured to send the received uplink data sent by the user equipment (UE) to the primary base station, whereby the primary base station sends the uplink data to the serving gateway (SGW) Receive and / or receive downlink data from the SGW transmitted by the primary base station and transmit downlink data to the UE.

  According to one of the preceding possible realization methods, in a fourth feasible method of the ninth aspect, the transmitting unit is configured to: downlink transport network layer (TNL) address of the secondary base station and general packet radio service tunneling The primary base station is further configured to transmit a protocol tunnel endpoint identifier (GTP TEID) to the primary base station, whereby using the mobility management entity (MME), the primary base station receives the downlink TNL of the secondary base station. The address and GTP TEID are sent to the SGW, and the secondary base station receives the uplink TNL address and GTP TEID of the SGW sent by the primary base station. The transmitting unit is further configured to transmit the received uplink data sent by the UE to the SGW, whereby the secondary base station transmits the received downlink data sent by the SGW to the UE .

  According to a tenth aspect, a data exchange apparatus is provided, wherein the apparatus is a primary base station, the apparatus comprising: a transmitting unit, a receiving unit and an exchanging unit. The transmitting unit is configured to transmit a first message to the secondary base station, and the first message is used to notify the secondary base station to set up the S1 interface. The receiving unit is configured to receive by the primary base station the S1 interface setup request sent by the secondary base station. The transmitting unit is further configured to transmit the S1 interface setup response to the secondary base station. The switching unit is configured to perform switching with the secondary base station by using the S1 interface.

  In a first possible method of a tenth aspect, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or an S1 interface setup response Transmits an inter-base station coordinated service identifier.

  According to one of the aforementioned possible realization methods, in a second feasible method of the tenth aspect, the receiving unit is configured to receive the relationship information between the secondary base station and the primary base station from the OAM And the transmitting unit is further configured to transmit the first message to the secondary base station.

  According to one of the aforementioned possible realization methods, in the third feasible method of the tenth aspect, the transmitting unit is further configured to transmit the IP address and TEID of the primary base station to the secondary base station Ru. The switching unit is sent by the secondary base station, receives uplink data received from the user equipment (UE), sends uplink data to the serving gateway (SGW), and / or is down from the SGW The link data is configured to be forwarded to the secondary base station, whereby the secondary base station transmits downlink data to the UE.

  According to one of the preceding possible realization methods, in a fourth feasible method of the tenth aspect, the transmitting unit receives the secondary base station transmitted by the secondary base station by using an MME And transmitting the received downlink downlink TNL address and the received GTP TEID to the SGW, and transmitting the uplink TNL address and the GTP TEID of the SGW to the secondary base station, whereby the secondary base station is transmitted by the UE. Also, the received uplink data is transmitted to the SGW, and the secondary base station transmits the received downlink data transmitted by the SGW to the UE.

  According to an eleventh aspect, a data exchange apparatus is provided, wherein the apparatus is a primary base station, the apparatus comprising: a transmitting unit, a receiving unit and an exchanging unit. The transmitting unit is configured to transmit an X2 handover request message to the secondary base station, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, and the receiving unit is , Configured to receive an X2 handover request response sent by the secondary base station, and the switching unit is configured to perform data exchange with the secondary base station by using the X2 interface.

  In a first possible method of the eleventh aspect, the tunnel address information comprises: transport network layer (TNL) address and generic packet radio service tunneling protocol tunnel endpoint identifier (TNL) address assigned to the UE by the primary base station GTP TEID).

  According to one of the aforementioned possible implementations, in a second feasible method of the eleventh aspect, the X2 handover request message conveys an inter-base station coordinated service identifier and / or an X2 handover The request response carries an inter-base station coordinated service identifier.

  According to one of the aforementioned possible implementations, in a third feasible method of the eleventh aspect, the apparatus further comprises a control unit, wherein the control unit associates the X2 interface or the GTP tunnel associated with the UE. And the transmitting unit is further configured to transmit an update or release message to the secondary base station, whereby the secondary base station associates the X2 interface or the general packet radio service of the UE. Update or release tunneling protocol GTP tunnels.

  In accordance with one of the aforementioned possible implementations, in a fourth possible method of the eleventh aspect, the update or release message conveys an inter-base station coordinated service identifier and a bearer identifier.

  According to a twelfth aspect, a data exchange apparatus is provided, wherein the apparatus is a secondary base station, the apparatus comprising: a receiving unit, a transmitting unit and an exchanging unit. The receiving unit is configured to receive an X2 handover request message sent by the primary base station, the X2 handover request message including tunnel address information allocated by the primary base station to a user equipment (UE), The transmitting unit is configured to transmit an X2 handover request response to the primary base station, and the switching unit is configured to perform data exchange with the primary base station by using the X2 interface.

  In a first possible method of the twelfth aspect, the tunnel address information comprises: transport network layer (TNL) address and generic packet radio service tunneling protocol tunnel endpoint identifier (TNL) address allocated to the UE by the primary base station GTP TEID).

  According to one of the aforementioned possible implementations, in a second feasible method of the twelfth aspect, the X2 handover request message conveys an inter-base station coordinated service identifier and / or an X2 handover The request response carries an inter-base station coordinated service identifier.

  According to one of the aforementioned possible implementations, in a third feasible method of the twelfth aspect, the receiving unit is configured to receive an update or release message sent by the primary base station, Further comprises: a control unit. The control unit is configured to update or release the X2 interface association or the general packet radio service tunneling protocol GTP tunnel of the UE.

  According to one of the aforementioned possible implementations, in a fourth feasible method of the twelfth aspect, the update or release message conveys an inter-base station coordinated service identifier and a bearer identifier.

  According to a thirteenth aspect, there is provided a data exchange apparatus, wherein the apparatus is a primary base station, the apparatus comprising: a transmitting unit, a receiving unit and an exchanging unit. The transmitting unit is configured to transmit an X3 interface setup request to the secondary base station, and the X3 interface has the capability of two-way data communication. The receiving unit is configured to receive the X3 interface setup response sent by the secondary base station. The switching unit is configured to perform bi-directional data exchange with the secondary base station by using the X3 interface.

  In the first feasible method of the thirteenth aspect, the request to set up the X3 interface transmits an inter-base station cooperation service identifier, and / or the response to set up the X3 interface transmits an inter-base station cooperation service identifier. .

  According to one of the previously mentioned possible implementations, in a second possible method of the thirteenth aspect, the X3 interface comprises: S1 interface.

  According to one of the aforementioned possible implementations, in a third feasible method of the thirteenth aspect, the transmitting unit secondary to the Internet Protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) It is configured to transmit to the base station. The switching unit receives uplink data sent by the user equipment (UE) and forwarded by the secondary base station, and sent uplink data to the serving gateway (SGW), and sent by the SGW The downlink data is configured to be transmitted to the secondary base station, whereby the secondary base station transmits the downlink data to the UE.

  According to one of the aforementioned possible realization methods, in the fourth feasible method of the thirteenth aspect, the transmitting unit uses the MME to generate the downlink transport network layer (TNL) of the secondary base station The address and general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) are further transmitted to the SGW and the SGW uplink TNL address and GTP TEID are further transmitted to the secondary base station, whereby the secondary base station The station sends the received uplink data sent by the UE to the SGW, and sends the received downlink data sent by the SGW to the UE.

  According to a fourteenth aspect, there is provided a data exchange apparatus, wherein the apparatus is a secondary base station, the apparatus comprising: a receiving unit, a transmitting unit and an exchanging unit. The receiving unit is configured to send an X3 interface setup request by the primary base station, and the X3 interface has the capability of two-way data communication. The transmitting unit is configured to transmit an X3 interface setup response to the primary base station. The switching unit is configured to perform bi-directional data exchange with the primary base station by using the X3 interface.

  In the first feasible method of the fourteenth aspect, the request to set up the X3 interface transmits an inter-base station cooperation service identifier, and / or the response to set up the X3 interface transmits an inter-base station cooperation service identifier. .

  According to one of the aforementioned possible implementations, in a second possible method of the fourteenth aspect, the X3 interface comprises: S1 interface.

  According to one of the aforementioned possible implementations, in a third feasible method of the fourteenth aspect, the receiving unit is an internet protocol (IP) address of the primary base station and a tunnel transmitted by the primary base station. It is further configured to receive an endpoint identifier (TEID). The switching unit is configured to send the uplink data sent from the user equipment (UE) to the primary base station, whereby the primary base station sends the uplink data to the serving gateway (SGW), The secondary base station receives the downlink data from the SGW sent by the primary base station and transmits the downlink data to the UE.

  According to one of the preceding possible realization methods, in a fourth feasible method of the fourteenth aspect, the switching unit is an SGW uplink transport network layer (TNL) address sent by the primary base station And general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID), and send the received uplink data sent by the UE to the SGW and send the downlink data received from the SGW to the UE Further configured.

  According to a fifteenth aspect, a data exchange apparatus is provided, wherein the apparatus is a mobility management entity, the apparatus comprising: a receiving unit and a transmitting unit. The receiving unit is configured to receive a first message sent by the primary base station, the first message being a secondary base in cooperation with the primary base station to serve user equipment (UE) Used to request the station, the transmitting unit is configured to send a second message to the secondary base station, and the second message is to cooperate with the primary base station to serve the UE Used to request a secondary base station, the receiving unit is further configured to receive a first response returned by the secondary base station, and the first response is a primary base station to serve the UE Convey information that the secondary base station has agreed to work with the The second is further configured to send a response to, thereby, in order to provide service to the UE, the primary base station and secondary base stations cooperate.

  In the first realizable method of the fifteenth aspect, the transmitting unit further notifies the service providing gateway (SGW) corresponding to the UE of the address information of the secondary base station and further notifies the address information of the SGW to the secondary base station. Configured, whereby the secondary base station performs data exchange with the SGW for the UE.

  According to one of the previously mentioned possible realization methods, in a second feasible method of the fifteenth aspect, the address information of the secondary base station comprises: transport network layer (TNL) address of the secondary base station and General Packet Radio Services Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID). The SGW address information includes: SGW TNL address information and GTP TEID.

  According to a sixteenth aspect, a data exchange apparatus is provided, wherein the apparatus is a secondary base station, the apparatus comprising: a receiving unit and a transmitting unit. The receiving unit is configured to receive a second message sent by the mobility management entity (MME), the second message being a secondary base station to cooperate with the primary base station to serve the UE The transmission unit is configured to send a first response to the MME, and the first response is a secondary base station in cooperation with the primary base station to serve the UE. Is used to indicate that the UE has agreed, whereby the MME sends a second response to the primary base station, and the second response is for the primary base station to cooperate with the secondary base station to serve the UE. Used to signal that it works.

  In the first feasible method of the sixteenth aspect, the receiving unit is further configured to receive the address information of a serving gateway (SGW) corresponding to the UE, transmitted by the MME, the apparatus further comprising a switching unit The switching unit is configured to perform data exchange with the SGW for the UE according to the address information of the SGW.

  According to one of the aforementioned possible implementations, in a second feasible method of the sixteenth aspect, the SGW's address information comprises: SGW's transport network layer (TNL) address and general packet radio service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID).

  According to one of the preceding possible realization methods, in a third feasible method of the sixteenth aspect, the switching unit transmits uplink data received from the UE to the SGW, and downlink data received from the SGW Are further configured to send to the UE.

  According to a seventeenth aspect, a data exchange apparatus is provided, wherein the apparatus is a secondary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program includes the following: relationship information between the secondary base station and the primary base station that receives the first message sent by the primary base station or is configured with an operation, management and maintenance system (OAM) The instruction used to receive, the first message is used to notify the secondary base station to set up the S1 interface, and is used to send an S1 interface setup request to the primary base station Instructions, instructions used to receive the S1 interface setup response sent by the primary base station, and instructions used to perform exchange with the primary base station by using the S1 interface. The processor is configured to execute an application program.

  In a first possible method of a seventeenth aspect, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or an S1 interface setup response Transmits an inter-base station coordinated service identifier.

  In accordance with one of the previously mentioned possible realization methods, in the second realizable method of the seventeenth aspect, the first message is transmitted from the primary base station to the secondary base station related information from the OAM and the primary base station. After being received by the primary base station.

  According to one of the previously mentioned possible implementations, in a third feasible method of the seventeenth aspect the application program further comprises: internet protocol (IP of the primary base station) transmitted by the primary base station ) Instructions used to receive the address and tunnel endpoint identifier (TEID). By using the S1 interface, the instructions used to perform the exchange with the primary base station include: transmitting received uplink data sent by the user equipment (UE) to the primary base station Command to be used to cause the primary base station to transmit uplink data to the SGW and / or to receive downlink data from the SGW forwarded by the primary base station, downlink data Command used to send to the UE.

  According to one of the aforementioned possible implementations, in a fourth possible method of the seventeenth aspect, the application program further comprises: downlink transport network layer (TNL) address of the secondary base station and the generic A Packet Radio Service Tunneling Protocol Tunneling Point Identifier (GTP TEID) is an instruction used to transmit to the primary base station, whereby the primary base station uses the MME to Sending a downlink transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW, and an SGW uplink TNL address sent by the primary base station Instructions used to receive fine-GTP TEID. The application program further comprises: transmitting the received uplink data sent by the UE to the SGW, and a command used to transmit the received downlink data sent by the SGW to the UE.

  According to an eighteenth aspect, there is provided a data exchange apparatus, wherein the apparatus is a primary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program includes: an instruction used to send a first message to the secondary base station, the first message being used to notify the secondary base station to set up the S1 interface , An instruction, an instruction used to receive an S1 interface setup request sent by the secondary base station, an instruction used to send an S1 interface setup response to the secondary base station, and using the S1 interface An instruction used to perform an exchange with a secondary base station. The processor is configured to execute an application program.

  In a first possible method of an eighteenth aspect, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or an S1 interface setup response Transmits an inter-base station coordinated service identifier.

  In accordance with one of the aforementioned possible implementations, in a second feasible method of the eighteenth aspect, the instructions used to transmit the first message to the secondary base station include: from OAM An instruction used to receive relationship information between the secondary base station and the primary base station, and an instruction used to send the first message to the secondary base station.

  According to one of the previously mentioned possible implementations, in a third feasible method of the eighteenth aspect the application program further comprises: internet protocol (IP) address of the primary base station and a tunnel endpoint identifier ( A command used to transmit the TEID) to the secondary base station. By using the S1 interface, the instructions used to perform the exchange with the secondary base station include: receiving uplink data sent by the secondary base station and received from the user equipment (UE) Instructions used to transmit uplink data to the SGW, and / or instructions used to transfer downlink data from the SGW to the secondary base station, Thereby, the secondary base station transmits downlink data to the UE.

  According to one of the aforementioned possible implementations, in a fourth possible method of the eighteenth aspect, the application program further comprises: a secondary transmitted by the secondary base station by using an MME An instruction used to transmit the received downlink TNL address of the base station and the received GTP TEID to the SGW, and an instruction used to transmit the uplink TNL address of the SGW and the GTP TEID to the secondary base station Thus, the secondary base station transmits the received uplink data transmitted by the UE to the SGW, and the secondary base station transmits the received downlink data transmitted by the SGW to the UE.

  According to a nineteenth aspect, a data exchange apparatus is provided, wherein the apparatus is a primary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program includes: an instruction used to send an X2 handover request message to the secondary base station, wherein the X2 handover request message is a tunnel allocated by the primary base station to the user equipment (UE) Instructions, including address information, instructions used to receive the X2 handover request response sent by the secondary base station, and to perform data exchange with the secondary base station by using the X2 interface Instruction to be used. The processor is configured to execute an application program.

  In a first possible method of the nineteenth aspect, the tunnel address information comprises: transport network layer (TNL) address and generic packet radio service tunneling protocol tunnel endpoint identifier (TNL) address assigned to the UE by the primary base station GTP TEID).

  In accordance with one of the aforementioned possible implementations, in the second feasible method of the nineteenth aspect, the X2 handover request message conveys an inter-base station coordinated service identifier and / or an X2 handover The request response carries an inter-base station coordinated service identifier.

  According to one of the aforementioned possible implementations, in a third feasible method of the nineteenth aspect, the application program further comprises: updating or releasing the X2 interface association or the GTP tunnel associated with the UE Instructions used to send the update or release message to the secondary base station, whereby the secondary base station associates the X2 interface or the generic packet radio service tunneling protocol of the UE. Update or release GTP tunnels.

  In accordance with one of the aforementioned possible implementations, in a fourth possible method of the nineteenth aspect, the update or release message conveys an inter-base station coordinated service identifier and a bearer identifier.

  According to a twentieth aspect, a data exchange apparatus is provided, wherein the apparatus is a secondary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program comprises: an instruction used to receive the X2 handover request message sent by the primary base station, the X2 handover request message being allocated by the primary base station to the user equipment (UE) Instructions, including the specified tunnel address information, instructions used to send an X2 handover request response to the primary base station, and to perform data exchange with the primary base station by using the X2 interface Instruction to be used. The processor is configured to execute an application program.

  In a first possible method of the twentieth aspect, the tunnel address information comprises: a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (TNL) address assigned to the UE by the primary base station GTP TEID).

  In accordance with one of the aforementioned possible implementations, in a second feasible method of the twentieth aspect, the X2 handover request message conveys an inter-base station coordinated service identifier and / or an X2 handover The request response carries an inter-base station coordinated service identifier.

  According to one of the aforementioned possible implementations, in a third feasible method of the twentieth aspect, the application program further comprises: receiving an update or release message sent by the primary base station, X2 Interface association or instructions used to update or release the general packet radio service tunneling protocol GTP tunnel of the UE.

  In accordance with one of the previously described possible implementations, in a fourth possible method of the twentieth aspect, the update or release message conveys an inter-base station coordinated service identifier and a bearer identifier.

  According to a twenty first aspect, there is provided a data exchange apparatus, wherein the apparatus is a primary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program includes: an instruction used to send a request to set up the X3 interface to the secondary base station, the X3 interface having the capability of two-way data communication, the instruction sent by the secondary base station Instructions used to receive the response to set up the X3 interface, and instructions used to perform two-way data exchange with the secondary base station by using the X3 interface. The processor is configured to execute an application program.

  In the first feasible method of the twenty-first aspect, the request to set up the X3 interface transmits an inter-base station cooperation service identifier, and / or the response to set up the X3 interface transmits an inter-base station cooperation service identifier. .

  According to one of the aforementioned possible implementations, in a second possible method of the twenty-first aspect, the X3 interface comprises: S1 interface.

  According to one of the aforementioned possible implementations, in a third feasible method of the twenty-first aspect, the application program further comprises: internet protocol (IP) address of the primary base station and a tunnel endpoint identifier ( A command used to transmit the TEID) to the secondary base station. By using the X3 interface, the instructions used to perform two-way data exchange with the secondary base station include: uplink data transmitted by the user equipment (UE) and forwarded by the secondary base station , And the instruction used to transmit uplink data to the serving gateway (SGW), and the instruction used to transmit downlink data transmitted by the SGW to the secondary base station, Thereby, the secondary base station transmits downlink data to the UE.

  According to one of the previously mentioned possible implementations, in a fourth possible method of the twenty-first aspect, the application program further comprises: an X3 interface setup response transmitted by the primary base station by the secondary base station To the SGW with the downlink transport network layer (TNL) address of the secondary base station and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) by using the mobility management entity (MME) after receiving The instruction used to transmit and the instruction used to transmit the SGW uplink TNL address and the GTP TEID to the secondary base station, whereby the secondary base station is transmitted by the UE. Uplink data Transmitted to the SGW, and transmits transmitted by SGW, the downlink data received to the UE.

  According to a twenty-second aspect, a data exchange apparatus is provided, wherein the apparatus is a primary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program comprises: instructions used to receive a request to set up the X3 interface sent by the primary base station, the X3 interface having the capability of two-way data communication, the instruction, the primary base station Instructions used to send responses to set up the X3 interface, and instructions used to perform two-way data exchange with the primary base station by using the X3 interface. The processor is configured to execute an application program.

  In the first feasible method of the twenty-second aspect, the request to set up the X3 interface transmits an inter-base station cooperation service identifier, and / or the response to set up the X3 interface transmits an inter-base station cooperation service identifier. .

  According to one of the aforementioned possible implementations, in a second possible method of the twenty-second aspect, the X3 interface comprises: S1 interface.

  According to one of the aforementioned possible implementations, in a third feasible method of the twenty-second aspect, the application program further comprises: internet protocol (IP of the primary base station) transmitted by the primary base station ) Instructions used to receive the address and tunnel endpoint identifier (TEID). By using the X3 interface, the instructions used to perform two-way data exchange with the primary base station include: to transmit uplink data from the user equipment (UE) to the primary base station The instruction to be used, whereby the primary base station transmits uplink data to the serving gateway (SGW) as well as receives downlink data from the SGW transmitted by the primary base station, the downlink An instruction used to send data to the UE.

  According to one of the aforementioned possible implementations, in a fourth possible method of the twenty-second aspect, the application program further comprises: uplink transport network layer of SGW transmitted by the primary base station (TNL) Address and Generic Packet Radio Service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID) received, sent uplink data sent by the UE, sent to the SGW, downlink data received from the SGW is sent to the UE Instruction used to send to.

  According to a twenty-third aspect, a data exchange apparatus is provided, wherein the apparatus is a mobility management entity (MME), the apparatus comprising: a network interface, a processor, a memory and an application program stored in the memory. The application program comprises: an instruction used to receive a first message sent by the primary base station, the first message being for the primary base station to serve user equipment (UE) An instruction used to request the secondary base station to cooperate with the first base station to transmit a second message to the secondary base station, the second message serving the UE A command used to request the secondary base station to cooperate with the primary base station, the command used to receive the first response returned by the secondary base station, 1 Response is that the secondary base station agreed to cooperate with the primary base station to serve the UE An instruction to communicate the information and an instruction used to send a second response to the primary base station, whereby the primary base station and the secondary base station cooperate to serve the UE. Work, order. The processor is configured to execute an application program.

  In the first achievable method of the twenty-third aspect, the application program is used to notify the serving gateway (SGW) corresponding to the UE of the address information of the secondary base station and to notify the secondary base station of the address information of the SGW. And the secondary base station performs data exchange with the SGW for the UE.

  According to one of the previously mentioned possible implementations, in a second feasible method of the twenty-third aspect, the address information of the secondary base station comprises: transport network layer (TNL) address of the secondary base station and General Packet Radio Services Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID). The SGW address information includes: SGW TNL address information and GTP TEID.

  According to a twenty-fourth aspect, a data exchange apparatus is provided, wherein the apparatus is a secondary base station, the apparatus comprising: a network interface, a processor, a memory, and an application program stored in the memory. The application program comprises: an instruction used to receive a second message sent by the mobility management entity (MME), the second message with the primary base station to serve the UE An instruction used to request the secondary base station to cooperate, an instruction used to send a first response to the MME, the first response to service the UE: Used to indicate information that the secondary base station has agreed to cooperate with the primary base station, whereby the MME sends a second response to the primary base station and the second response serves the UE Order to notify that the primary base station cooperates with the secondary base station. The processor is configured to execute an application program.

  In the first feasible method of the twenty-fourth aspect, after the secondary base station transmits the first response to the MME, the application program further includes: of the serving gateway (SGW) corresponding to the UE transmitted by the MME Instructions used to receive the address information and instructions used to perform data exchange with the SGW for the UE according to the address information of the SGW.

  According to one of the aforementioned possible implementations, in a second feasible method of the twenty-fourth aspect, the address information of the SGW includes the following: transport network layer (TNL) address of the SGW and a generic packet radio service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID).

  According to one of the previously mentioned possible realization methods, in a third feasible method of the twenty-fourth aspect, the instruction used to perform data exchange with the SGW for the UE according to the address information of the SGW is Including: transmitting uplink data received from the UE to the SGW, and instructions used to transmit downlink data received from the SGW to the UE.

  With respect to the data exchange method and apparatus of the embodiment of the present invention, the S1, X2 or X3 interface between the primary base station and the secondary base station may be used to perform data transmission with the SGW, or A secondary base station may be used to directly perform data transmission with the SGW, thereby realizing data exchange between the primary base station and the secondary base station. Coordinated data transmission is performed, and the primary base station may perform bi-directional data transmission with the secondary base station, thereby improving the quality of service for the UE.

3 is a flowchart of a data exchange method according to a first embodiment of the present invention. 7 is a flowchart of a data exchange method according to a second embodiment of the present invention. 7 is a flowchart of a data exchange method according to a third embodiment of the present invention. 7 is a flowchart of a data exchange method according to a fourth embodiment of the present invention. 7 is a flowchart of a data exchange method according to a fifth embodiment of the present invention. FIG. 10 is a flowchart of a data exchange method according to a sixth embodiment of the present invention. Fig. 15 is a flowchart of a data exchange method according to a seventh embodiment of the present invention; FIG. 16 is a flowchart of a data exchange method according to an eighth embodiment of the present invention. FIG. 1 is a schematic view of a data exchange apparatus according to a first embodiment of the present invention; FIG. 5 is a schematic view of a data exchange apparatus according to a second embodiment of the present invention; FIG. 7 is a schematic view of a data exchange apparatus according to a third embodiment of the present invention; FIG. 7 is a schematic view of a data exchange apparatus according to a fourth embodiment of the present invention; FIG. 7 is a schematic view of a data exchange apparatus according to a fifth embodiment of the present invention; FIG. 10 is a schematic view of a data exchange apparatus according to a sixth embodiment of the present invention; Figure 7 is a schematic view of a data exchange apparatus according to a seventh embodiment of the present invention; Figure 8 is a schematic view of a data exchange apparatus according to an eighth embodiment of the present invention; FIG. 5 is a schematic view of another data exchange device according to the first embodiment of the present invention; FIG. 7 is a schematic view of another data exchange apparatus according to a second embodiment of the present invention; FIG. 7 is a schematic view of another data exchange apparatus according to a third embodiment of the present invention; FIG. 7 is a schematic view of another data exchange apparatus according to a fourth embodiment of the present invention; FIG. 7 is a schematic view of another data exchange apparatus according to a fifth embodiment of the present invention; FIG. 10 is a schematic view of another data exchange device according to a sixth embodiment of the present invention; FIG. 10 is a schematic view of another data exchange device according to a seventh embodiment of the present invention; FIG. 10 is a schematic view of another data exchange device according to an eighth embodiment of the present invention;

  The technical solution of the present invention is described in more detail below with reference to the accompanying drawings and embodiments.

  In embodiments of the present invention, base station eNB1 and base station eNB2 may work together to provide service to UEs, where eNB1 is a primary serving base station and eNB2 is a secondary serving base station Yes, or secondary base stations, coordinated base stations, small cell nodes, low power nodes, relay stations, home base stations, small cell base stations, micro base stations, pico base stations, macro base stations, or the like It may be called. In embodiments of the present invention, there may be one secondary base station or there may be multiple secondary base stations.

  1 and 2 are flowcharts of a data exchange method according to the first and second embodiments of the present invention. The first embodiment shows the process of the primary base station, and the second embodiment shows the process of the secondary base station. The primary and secondary base stations in the first and second embodiments perform switching by using the S1 interface.

  FIG. 1 is a flowchart of a data exchange method according to a first embodiment of the present invention. As shown, the method in the present embodiment includes the following steps:

  Step 101: The secondary base station receives a first message transmitted by the primary base station, or receives relationship information between the secondary base station and the primary base station, which is configured by an operation, management, and maintenance system. Here, the first message is used to notify the secondary base station to set up the S1 interface.

  For example, the primary base station eNB1 expects to set up the S1 interface with the secondary base station eNB2, and from the viewpoint of the secondary base station eNB2, the primary base station eNB1 is considered as a special core network node, and hence the primary base station eNB1 Station eNB1 may perform UE context management and bearer management in secondary base station eNB2. For example, UE context management and bearer management procedures in 3GPP TS 36.413 of the S1AP protocol are used between the primary base station eNB1 and the secondary base station eNB2.

  In some cases, the S1 interface is an S1 interface used for inter-base station coordination service, and the S1 interface setup requirement S1 SETUP REQUIRED / INVOKE message conveys an inter-base station coordination service identifier. For example, the field for recording the name in the S1 interface setup requirement contains information about the inter-base station coordination service.

  The inter-base station coordinated service may be an inter-base station coordinated transmission, an inter-base station CoMP, an inter-base station carrier aggregation, an inter-base station multiflow service, or the like.

  In this step, the primary base station eNB1 transmits the S1 interface setup requirement to the secondary base station eNB2, whereby the secondary base station eNB2 sets up the S1 interface with the secondary base station eNB2 by the primary base station eNB1. I understand that I am expecting. The secondary base station eNB2 may be otherwise aware that the primary base station eNB1 expects to set up the S1 interface with the secondary base station eNB2. For example:

  The Operation, Administration, and Maintenance System (OAM) sends relationship information configured by the OAM to the primary base station and / or the secondary base station, and / or the S1 interface setup requirements, the base station Communicate inter-cooperative service identifiers.

  The relation information is the corresponding relation between the primary base station and the secondary base station, or the corresponding relation between the control node and the controlled node.

  Step 102: The secondary base station sends an S1 interface setup request to the primary base station.

  For example, after receiving the S1 interface setup requirement or after receiving the relationship information sent by the OAM, the secondary base station eNB2 may request to support the primary base station eNB1 serving the UE. In addition, it can be seen that the primary base station eNB1 needs the secondary base station eNB2. When the secondary base station eNB2 agrees, the secondary base station eNB2 transmits an S1 interface setup request S1 SETUP REQUEST message to the primary base station eNB1. The setup request may be transmitted from the secondary base station eNB2 to the primary base station eNB1 and may convey an inter-base station coordinated service identifier.

  Step 103: Receive an S1 interface setup response sent by the primary base station.

  When the primary base station eNB1 recognizes the S1 interface setup, the primary base station eNB1 sends an S1 interface setup response S1 SETUP RESPONSE message to the secondary base station, where the message carries an inter-base station coordination service identifier May be If the primary base station eNB1 does not acknowledge the S1 interface setup, the primary base station eNB1 returns an S1 setup failure S1 SETUP FAILURE message to the secondary base station.

  Step 104: The secondary base station performs exchange with the primary base station by using the S1 interface. For example, an S1 interface connection is set up between the secondary base station and the primary base station, and data exchange is performed by using the S1 interface.

  The S1 interface is set up between the primary base station eNB1 and the secondary base station eNB2, and then the functions of UE context management and bearer management are reused to realize the inter-base station coordinated transmission service. From the UE's point of view, by using the eNB1, the S1 interface of the UE may be connected to a Mobility Management Entity (MME). In the prior art, eNB2 does not directly exchange information about the UE with the serving MME of the UE. In this embodiment, the eNB2 can connect to the serving MME of the UE by using the S1 interface between the eNB2 and the eNB1, and thereby exchange information about the UE with the serving MME of the UE.

  In order to set up the S1 interface that can be used to perform bi-directional data transmission after triggering by the primary base station or configuration by OAM using the data exchange method in this embodiment, the secondary base station requests S1 interface setup Is realized, whereby it is realized that bi-directional data exchange is performed between the primary base station and the secondary base station by using the S1 interface.

  FIG. 2 is a flowchart of a data exchange method according to a second embodiment of the present invention. As shown, the method in the present embodiment includes the following steps:

  Step 201: The primary base station sends a first message to the secondary base station, where the first message is used to notify the secondary base station to set up the S1 interface.

  For example, the primary base station eNB1 expects to set up the S1 interface with the secondary base station eNB2, and from the viewpoint of the secondary base station eNB2, the primary base station eNB1 is considered as a special core network node, and hence the primary base station eNB1 Station eNB1 may perform UE context management and bearer management in secondary base station eNB2. For example, UE context management and bearer management procedures in 3GPP TS 36.413 of the S1AP protocol are used between the primary base station eNB1 and the secondary base station eNB2.

  In some cases, the S1 interface is an S1 interface used for inter-base station coordination service, and the S1 interface setup requirement S1 SETUP REQUIRED / INVOKE message conveys an inter-base station coordination service identifier. For example, the field for recording the name in the S1 interface setup requirement contains information about the inter-base station coordination service.

  The inter-base station coordinated service may be an inter-base station coordinated transmission, an inter-base station CoMP, an inter-base station carrier aggregation, an inter-base station multiflow service, or the like.

  In step 201, the primary base station eNB1 transmits the S1 interface setup requirement to the secondary base station eNB2, whereby the secondary base station eNB2 sets up the S1 interface with the secondary base station eNB2 by the primary base station eNB1. It may be known that it is expected, or the secondary base station eNB2 may be otherwise known to expect the primary base station eNB1 to set up the S1 interface with the secondary base station eNB2. For example:

  The Operation, Administration, and Maintenance System (OAM) sends relationship information configured by the OAM to the primary base station and / or the secondary base station, and / or the S1 interface setup requirements, the base station Communicate inter-cooperative service identifiers.

  The relation information is the corresponding relation between the primary base station and the secondary base station, or the corresponding relation between the control node and the controlled node.

  Step 202: The primary base station receives the S1 interface setup request sent by the secondary base station.

  For example, after receiving the S1 interface setup requirement or after receiving the relationship information sent by the OAM, the secondary base station eNB2 may request to support the primary base station eNB1 serving the UE. In addition, it can be seen that the primary base station eNB1 needs the secondary base station eNB2. When the secondary base station eNB2 agrees, the secondary base station eNB2 transmits an S1 interface setup request S1 SETUP REQUEST message to the primary base station eNB1. The setup request may be transmitted from the secondary base station eNB2 to the primary base station eNB1 and may convey an inter-base station coordinated service identifier.

  Step 203: The primary base station transmits an S1 interface setup response to the secondary base station.

  When the primary base station eNB1 recognizes the S1 interface setup, the primary base station eNB1 sends an S1 interface setup response S1 SETUP RESPONSE message to the secondary base station, where the message carries an inter-base station coordination service identifier May be If the primary base station eNB1 does not acknowledge the S1 interface setup, the primary base station eNB1 returns an S1 setup failure S1 SETUP FAILURE message to the secondary base station.

  Step 204: The primary base station performs exchange with the secondary base station by using the S1 interface. For example, an S1 interface connection is set up between a primary base station and a secondary base station, and data exchange is performed by using the S1 interface.

  The S1 interface is set up between the primary base station eNB1 and the secondary base station eNB2, and then the functions of UE context management and bearer management are reused to realize the inter-base station coordinated transmission service.

  In order to set up the S1 interface that can be used to perform bi-directional data transmission after triggering by the primary base station or configuration by OAM using the data exchange method in this embodiment, the secondary base station requests S1 interface setup Is realized, whereby it is realized that bi-directional data exchange is performed between the primary base station and the secondary base station by using the S1 interface.

  3 and 4 are flowcharts of data exchange methods according to the third and fourth embodiments of the present invention. In the third and fourth embodiments, an X2 interface is used to implement inter-base station data exchange.

  As shown in FIG. 3, the method in the third embodiment includes the following steps:

  Step 301: The primary base station transmits an X2 handover request message to the secondary base station, where the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station.

  The X2 handover request message is a Transport Network Layer (TNL) address and General Packet Radio Service (GPRS) tunneling protocol (GPRS Tunneling Protocol) allocated to the UE by the primary base station eNB1. GTP) A tunnel endpoint identifier (TEID) may be transmitted, or a coordinated service identifier may be simultaneously transmitted, where the coordinated service identifier is a coordinated transmission / service identifier between base stations, an inter-base station CoMP identifier , An inter-base station carrier aggregation service identifier, an inter-base station multi-flow service identifier, or the like.

  Step 302: The primary base station eNB1 receives the X2 handover response message returned by the secondary base station eNB2.

  The secondary base station eNB2 receives the X2 handover request message, and it can be seen that the primary base station eNB1 expects the secondary base station eNB2 to perform coordinated transmission to the UE. If the secondary base station eNB2 agrees, the secondary base station eNB2 may return a handover response handover request acknowledge message to the primary base station eNB1, where the message may convey an inter-base station coordinated service identifier. If the secondary base station eNB2 does not agree, the secondary base station eNB2 returns a handover preparation failure Handover preparation failure message to the primary base station eNB1.

  Step 303: The secondary base station performs data exchange with the primary base station by using the X2 interface. For example, to perform data transmission by using the X2 interface, an X2 association and a bi-directional GTP tunnel of the UE are set up between the primary base station eNB1 and the secondary base station eNB2.

  In the prior art, during setup of the X2 interface, a GTP tunnel from the primary base station to the secondary base station is setup, so only the X2 interface can be used to perform one-way data transmission. In the present embodiment, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, whereby the GTP tunnel from the secondary base station to the primary base station can be set up, In combination with the technology, a bi-directional GTP tunnel is set up. Therefore, bi-directional data transmission can be performed using the X2 interface setup in this embodiment, thereby realizing bi-directional data exchange between the primary base station and the secondary base station.

  Preferably, as shown in FIG. 3, the method in this embodiment further comprises:

  Step 304: The primary base station updates or releases the X2 interface association or the GTP tunnel associated with the UE, and sends an update or release message to the secondary base station, whereby the secondary base station associates the X2 interface or the UE Update or release the GTP tunnel of According to this embodiment, when the primary base station updates the information related to the X2 interface, the secondary base station also executes the corresponding update procedure. In this way, the primary and secondary base stations may have matched information associated with the X2 interface, and the primary and secondary base stations may continue to perform the exchange by using the X2 interface. When the primary base station releases information related to the X2 interface, the secondary base station also executes the corresponding release procedure. In this way, released resources may be used for another procedure, thereby improving system performance.

  When the primary base station eNB1 requests the secondary base station eNB2 to cancel the coordinated service to the UE, the primary base station eNB1 transmits a release message, ie, handover cancel message, to the secondary base station eNB2 to associate and associate the UEs. Release the GTP tunnel. Preferably, the message may convey an inter-base station coordinated service identifier and / or a bearer identifier.

  As shown in FIG. 4, the method in the fourth embodiment includes the following steps:

  Step 401: The secondary base station receives the X2 handover request message sent by the primary base station, where the X2 handover request message is tunnel address information allocated to the user equipment (UE) by the primary base station including.

  X2 Handover Request The X2AP Handover request message is a Transport Network Layer (TNL) address address and a GPRS Tunneling Protocol (GTP) Tunnel Endpoint Identifier (GPR Tunneling Point Identifier) allocated to the UE by the primary base station eNB1. Tunnel Endpoint Identifier (TEID) may be transmitted, or a coordinated service identifier may be simultaneously transmitted, where the coordinated service identifier is a coordinated transmission / service identifier between base stations, an inter-base station CoMP identifier, an inter-base station carrier aggregation service It may be an identifier, an inter-base station multiflow service identifier, or the like.

  Step 402: The secondary base station transmits an X2 handover request response to the primary base station.

  The secondary base station eNB2 receives the X2 handover request message, and it can be seen that the primary base station eNB1 expects the secondary base station eNB2 to perform coordinated transmission to the UE. If the secondary base station eNB2 agrees, the secondary base station eNB2 may send back a handover response a handover request acknowledge message to the primary base station eNB1, where the message may convey an inter-base station coordinated service identifier. If the secondary base station eNB2 does not agree, the secondary base station eNB2 returns a handover preparation failure Handover preparation failure message to the primary base station eNB1.

  Step 403: The secondary base station performs data exchange with the primary base station by using the X2 interface. For example, to perform data transmission by using the X2 interface, an X2 association and a bi-directional GTP tunnel of the UE are set up between the secondary base station eNB2 and the primary base station eNB1.

  In the prior art, during setup of the X2 interface, a GTP tunnel from the primary base station to the secondary base station is setup, so only the X2 interface can be used to perform one-way data transmission. In the present embodiment, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, whereby the GTP tunnel from the secondary base station to the primary base station can be set up, In combination with the technology, a bi-directional GTP tunnel is set up. Therefore, bi-directional data transmission can be performed using the X2 interface setup in this embodiment, thereby realizing bi-directional data exchange between the secondary base station and the primary base station.

  Preferably, as shown in FIG. 4, the method in this embodiment further comprises:

  Step 404: The primary base station updates or releases the X2 interface association or the GTP tunnel associated with the UE, the secondary base station receives the update or release message sent by the primary base station, and the secondary base station X2 Interface association or update or release the GTP tunnel of the UE.

  When the primary base station eNB1 requests the secondary base station eNB2 to cancel the coordinated service to the UE, the primary base station eNB1 transmits a release message, ie, handover cancel message, to the secondary base station eNB2 to associate and associate the UEs. Release the GTP tunnel. Preferably, the message may convey an inter-base station coordinated service identifier and / or a bearer identifier.

  Transport network layer (transport network layer (TNL)) address address of the primary base station and general packet radio service tunneling protocol (GPRS Tunneling Protocol, GTP) using the X2AP handover method in the third and fourth embodiments A tunnel endpoint identifier (TEID) is also sent to the secondary base station. As such, bi-directional data transmission between the primary and secondary base stations may be achieved by using an X2AP handover procedure. Alternatively, UE context management procedures and bearer management procedures may be added to the X2AP protocol and are the same as those of the S1AP protocol.

  5 and 6 are flowcharts of data exchange methods according to the fifth and sixth embodiments of the present invention. In the fifth and sixth embodiments, data exchange may be performed using an X3 interface.

  As shown in FIG. 5, the method in the fifth embodiment comprises the following steps:

  Step 501: The primary base station sends a request to set up the X3 interface to the secondary base station, where the X3 interface has bi-directional data communication capability.

  For example, the X3 interface is an interface of inter-base station coordinated service, and may be realized by using the S1 interface. The setup request is transmitted from the primary base station eNB1 to the secondary base station eNB2, that is, the X3 interface setup from the primary base station to the secondary base station is started, and in this case, the primary base station is connected to the secondary base station. It may be considered as a core network device.

  The so-called X3 interface may be another existing interface, for example, an existing S1 interface, or a newly defined interface as long as information exchange can be realized.

  Preferably, the X3 interface setup request may be an X3 Setup Request used for inter-base station coordination service. The X3 interface setup request conveys an inter-base station coordinated service identifier. The inter-base station coordinated service may be an inter-base station coordinated transmission / inter-base station coordinated service, an inter-base station CoMP, an inter-base station carrier aggregation, an inter-base station multiflow service, or the like.

  Step 502: The primary base station receives a response to set up the X3 interface sent by the secondary base station.

  When the secondary base station eNB2 agrees with the setup of the X3 interface, the secondary base station eNB2 returns an X3 interface setup response X3 interface setup response of the inter-base station coordination service to the primary base station eNB1, where the response message is the base station An inter-cooperative service identifier may be communicated.

  If the secondary base station eNB2 does not agree with the setup of the X3 interface, the secondary base station eNB2 returns an X3 setup Failure message of the inter-base station cooperation service, where the X3 setup Failure message also transmits the inter-base station cooperation service identifier May be

  Step 503: The primary base station performs bi-directional data exchange with the secondary base station by using the X3 interface. For example, to perform data transmission by using the X3 interface, the X3 interface of the UE is set up between the primary base station eNB1 and the secondary base station eNB2.

  In this embodiment, the primary base station sends a request to set up the X3 interface, which allows the primary base station to set up the X3 interface from the secondary base station, and the X3 interface is realized by the existing interface, for example, the S1 interface. It may be a newly defined interface having the capability of two-way data communication. Therefore, bi-directional data transmission can be performed using the X3 interface setup in this embodiment, thereby realizing bi-directional data exchange between the primary base station and the secondary base station.

  As shown in FIG. 6, the method in the sixth embodiment comprises the following steps:

  Step 601: The secondary base station receives a request to set up the X3 interface sent by the primary base station, where the X3 interface has the capability of two-way data communication.

  For example, the X3 interface is an interface of inter-base station coordinated service, and may be realized by using the S1 interface. The setup request is transmitted from the primary base station eNB1 to the secondary base station eNB2, that is, the X3 interface setup from the primary base station to the secondary base station is started, and in this case, the primary base station is connected to the secondary base station. It may be considered as a core network device.

  The so-called X3 interface may be another existing interface, for example, an existing S1 interface, or a newly defined interface as long as information exchange can be realized.

  Preferably, the X3 interface setup request may be an X3 Setup Request used for inter-base station coordination service. The X3 interface setup request conveys an inter-base station coordinated service identifier. The inter-base station coordinated service may be an inter-base station coordinated transmission / inter-base station coordinated service, an inter-base station CoMP, an inter-base station carrier aggregation, an inter-base station multiflow service, or the like.

  Step 602: The secondary base station sends a response to set up the X3 interface to the primary base station.

  When the secondary base station eNB2 agrees with the setup of the X3 interface, the secondary base station eNB2 returns an X3 interface setup response X3 interface setup response of the inter-base station coordination service to the primary base station eNB1, where the response message is the base station An inter-cooperative service identifier may be communicated.

  If the secondary base station eNB2 does not agree with the setup of the X3 interface, the secondary base station eNB2 returns an X3 setup Failure message of the inter-base station cooperation service, where the X3 setup Failure message also transmits the inter-base station cooperation service identifier May be

  Step 603: The secondary base station performs bidirectional data exchange with the primary base station by using the X3 interface. For example, to perform data transmission by using the X3 interface, the X3 interface of the UE is set up between the secondary base station eNB2 and the primary base station eNB1.

  In this embodiment, the secondary base station receives the request to set up the X3 interface sent by the primary base station, which can set up the X3 interface from the secondary base station to the primary base station, the X3 interface being an existing interface. For example, it may be realized by the S1 interface, or it may be a newly defined interface having the capability of two-way data communication. Therefore, bi-directional data transmission can be performed using the X3 interface setup in this embodiment, thereby realizing bi-directional data exchange between the secondary base station and the primary base station.

  The previous embodiments all show the process of interface setup or handover. After interface setup or handover, the secondary base station eNB2 needs to be used to perform data exchange. The primary base station eNB1 not only provides the functions of the MME, but also provides the functions of a Serving GW (S-GW). The primary base station eNB1 transmits the S-GW IP address and the GTP TEID allocated by the primary base station to the secondary base station eNB2.

  From the point of view of the core network node, the primary base station eNB1 is the serving base station of the UE, and the core network transmits the data and control signaling of the UE to the primary base station eNB1. The primary base station eNB1 forwards all or some of the data and control signaling of the UE to eNB2. The UE transmits all or some of the uplink data of the UE to the secondary base station eNB2, and the secondary base station eNB2 transmits the uplink data of the received UE to the primary base station eNB1, and then the primary base station The eNB 1 transfers uplink data to the actual core network node S-GW.

  The primary base station eNB1 is considered as a special core network node by the secondary base station eNB2. The primary base station provides at least the following functions: UE context management function, bearer management function and interface management function.

  The X3 interface in these embodiments is set up in such a way that the primary base station actively triggers a setup request, and the secondary base station responds to the request. After the X3 interface is set up, the primary base station may provide the following functions: UE context management function, bearer management function and interface management function.

  In this case, the primary base station eNB1 is not included in the scope of core network node candidates for the NAS node selection function (NNSF) procedure. That is, when the UE is newly connected to the secondary base station eNB2, the UE is not a UE that needs the secondary base station eNB2 to support the primary eNB1 in transmission, and the primary base station eNB1 has an eNB2 core network for the UE It is not included in the candidate range when selecting a node.

  Furthermore, the primary base station eNB1 maps the GTP-U tunnel between the primary base station eNB1 and the S-GW and the GTP-U tunnel between the primary base station eNB1 and the secondary base station eNB2 To realize, it provides the function of GTP-U tunnel mapping.

  In some cases, the secondary base station eNB2 may directly perform data exchange with the S-GW, and there is no need to perform data exchange with the S-GW by using the primary base station eNB1. After the S1 interface is set up between the primary base station eNB1 and the secondary base station eNB2, the primary base station eNB1 changes the TNL address and the GTP TEID in the S1AP message. It should be noted that this embodiment may also be implemented as an independent embodiment.

  In particular, by using the MME, the primary base station eNB1 transmits the downlink TNL address received by the secondary base station and the received GTP TEID transmitted by the secondary base station eNB2 to the S-GW, and the primary base station The eNB1 transmits the uplink TNL address and the GTP TEID of the S-GW to the secondary base station eNB2. Therefore, the data of the bearer of the UE transmitted by the secondary base station eNB2 is directly transmitted between the eNB2 and the S-GW, and the secondary base station eNB2 transmits the received uplink data transmitted by the UE to the S- Transmitting to the GW, the secondary base station eNB2 transmits the received downlink data transmitted by the S-GW to the UE.

  The primary base station may perform bi-directional data transmission with the secondary base station. Therefore, the secondary base station may perform data exchange with the S-GW by using the primary base station. The secondary base station may also perform data exchange directly with the S-GW. Thus, with respect to coordinated services between base stations, different base stations may serve different bearers, thereby improving the quality of service for UEs. Existing messages are reused as much as possible.

  7 and 8 are flowcharts of data exchange methods according to the seventh and eighth embodiments of the present invention, respectively. In all the embodiments described above, it is the primary base station eNB1 that performs coordinated data exchange with the secondary base station eNB2, and in the seventh and eighth embodiments, the data supported using the core network An exchange may be performed.

  As shown in FIG. 7, the method in the seventh embodiment includes the following steps:

  Step 701: The MME receives a first message sent by the primary base station, where the first message is a secondary base station to cooperate with the primary base station to serve user equipment (UE) Used to request Preferably, the first message includes the identifier of the UE and the identifier of the secondary base station.

  The primary base station eNB1 sends a first message to the MME to request the secondary base station to cooperate with the primary base station to serve user equipment (UE), where the first message is: In order to notify the MME that the secondary base station eNB2 is expected to cooperate, the identifier of the UE, the bearer identifier and the identifier of the cooperating secondary base station eNB2 may be conveyed.

  Step 702: Send a second message to the secondary base station, where the second message requests the secondary base station to cooperate with the primary base station to serve user equipment (UE) used. Preferably, the second message comprises an identifier of the UE.

  If the MME agrees to an inter-base station coordinated service request, the MME may send a second message, eg, an inter-base station to request a secondary base station to cooperate with the primary base station to serve the UE. The cooperative service request / command is transmitted to the cooperative secondary base station eNB2, where the inter-base station cooperative service request / command conveys the identifier of the UE and the bearer identifier, preferably, the inter-base station cooperative service request / command May also convey the identifier of the primary base station.

  Step 703: Receive a first response returned by the secondary base station, where the first response indicates that the secondary base station has agreed to cooperate with the primary base station to serve the UE. introduce.

  When the secondary base station eNB2 agrees with the request, the secondary base station eNB2 transmits a first response to the MME, where the first response may be an inter-base station cooperation service response message. If the secondary base station eNB2 does not agree with the request, the secondary base station eNB2 returns a failure response.

  The secondary base station is capable of cooperative transmission of only some bearers, and in this case, the inter-base station cooperative service response message conveys an identifier of a bearer capable of cooperative transmission.

  The MME may determine which base station each bearer will be transmitted in accordance with the bearer identifier conveyed in the coordination service response or the bearer identifier conveyed in the inter-base station coordination service request in step 701, and further The MME may determine which base station each bearer will be transmitted according to the load status of the primary and secondary base stations and information about the bearers of the UE.

  Step 704: Send a second response to the primary base station, whereby the primary base station and the secondary base station cooperate to serve the UE. Data exchange is performed between the secondary base station and the MME, and between the secondary base station and the S-GW corresponding to the MME, for the bearer of the UE corresponding to the identifier of the UE.

  The MME transmits a second response message to the primary base station eNB1. If the secondary base station eNB2 does not agree with the request, the secondary base station eNB2 returns a failure response. The MME transmits the corresponding TNL address and GTP TEID to the corresponding node (primary base station eNB1 or secondary base station eNB2) according to which base station each bearer is transmitted. The secondary base station transmits the received uplink data transmitted by the UE to the S-GW, and the secondary base station transmits the received downlink data transmitted by the S-GW to the UE.

  In the data exchange method in this embodiment, the network element MME of the core network is used to support data exchange, whereby the primary base station and the secondary base station cooperate to serve the UEs. To realize. The secondary base station is used to directly perform data transmission with the S-GW, whereby different base stations may serve different bearers for inter-base station coordination service, whereby to the UE Improve service quality. Existing messages are reused as much as possible.

  As shown in FIG. 8, the method in the eighth embodiment includes the following steps:

  Step 801: The secondary base station receives a second message sent by the MME, wherein the second message requests the secondary base station to cooperate with the primary base station to serve the UE Used for Preferably, the second message comprises an identifier of the UE.

  The primary base station eNB1 sends a first message to the MME to request the secondary base station to cooperate with the primary base station to serve user equipment (UE), where the first message is In order to notify the MME that the secondary base station eNB2 is expected to cooperate, the identifier of the UE, the bearer identifier, and the identifier of the cooperating secondary base station eNB2 may be conveyed.

  Step 802: The secondary base station sends a first response to the MME, where the first response is that the secondary base station agrees to a first message for serving the UE in cooperation with the primary base station. The MME transmits the second response to the primary base station.

  If the MME agrees to an inter-base station coordinated service request, the MME may send a second message, eg, an inter-base station to request a secondary base station to cooperate with the primary base station to serve the UE. The cooperative service request / command is transmitted to the cooperative secondary base station eNB2, where the inter-base station cooperative service request / command conveys the identifier of the UE and the bearer identifier, preferably, the inter-base station cooperative service request / command May also convey the identifier of the primary base station.

  When the secondary base station eNB2 agrees with the request, the secondary base station eNB2 transmits a first response, for example, an inter-base station coordination service response message to the MME. If the secondary base station eNB2 does not agree with the request, the secondary base station eNB2 returns a failure response.

  The secondary base station is capable of cooperative transmission of only some bearers, and in this case, the inter-base station cooperative service response message conveys an identifier of a bearer capable of cooperative transmission.

  The MME may determine which base station each bearer will be transmitted in accordance with the bearer identifier conveyed in the coordination service response or the bearer identifier conveyed in the inter-base station coordination service request in step 801, and further The MME may determine which base station each bearer will be transmitted according to the load status of the primary and secondary base stations and information about the bearers of the UE.

  Step 803: The primary base station and the secondary base station cooperate to serve the UE. Data exchange is performed between the secondary base station and the MME, and between the secondary base station and the S-GW corresponding to the MME, for the bearer of the UE corresponding to the identifier of the UE.

  The MME sends an associated second response message to the primary base station eNB1. If the secondary base station eNB2 does not agree with the request, the secondary base station eNB2 returns a failure response. The MME transmits the corresponding TNL address and GTP TEID to the corresponding node (primary base station eNB1 or secondary base station eNB2) according to which base station each bearer is transmitted. The secondary base station transmits the received uplink data transmitted by the UE to the S-GW, and the S-GW transmits the received downlink data transmitted by the S-GW to the UE.

  In the data exchange method in this embodiment, the network element MME of the core network is used to support data exchange, whereby the primary base station and the secondary base station cooperate to serve the UEs. To realize. The secondary base station is used to directly carry out data transmission with the S-GW, whereby different base stations may serve different bearers for coordinated service between base stations, whereby UE Improve the quality of service for Existing messages are reused as much as possible.

  FIG. 9 is a schematic view of a data exchange apparatus according to a first embodiment of the present invention. The apparatus in the present embodiment is a secondary base station, and as shown in the figure, the data exchange apparatus in the present embodiment includes in particular: a receiving unit 11, a transmitting unit 12 and a switching unit 13.

  The receiving unit 11 receives the first message transmitted by the primary base station, or receives the relationship information between the secondary base station and the primary base station configured by the operation, management, and maintenance system (OAM). The first message is used to notify the secondary base station to set up the S1 interface. The sending unit 12 is configured to send the S1 interface setup request to the primary base station. The receiving unit 11 is further configured to receive the S1 interface setup response sent by the primary base station. The switching unit 13 is configured to perform switching with the primary base station by using the S1 interface.

  The switching unit 13 may comprise a receiving unit 11 and / or a transmitting unit 12 or may be another unit with transmitting and / or receiving functions.

  In particular, the first message conveys an inter-base station coordinated service identifier, the S1 interface setup request conveys an inter-base station coordinated service identifier, and / or the S1 interface setup response indicates an inter-base station coordinated service identifier. introduce. The first message is transmitted by the primary base station after the primary base station receives the relationship information between the secondary base station and the primary base station from the OAM.

  Preferably, the receiving unit 11 is further configured to receive the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) sent by the primary base station. The switching unit 13 is configured to send the received uplink data sent by the user equipment (UE) to the primary base station, whereby the primary base station is up to the serving gateway (S-GW) Link data is transmitted and / or downlink data from the S-GW, which is forwarded by the primary base station, is received and downlink data is transmitted to the UE.

  Preferably, the transmitting unit 12 is further configured to transmit the downlink transport network layer (TNL) address of the secondary base station and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the primary base station. Thus, by using the mobility management entity (MME), the primary base station transmits the downlink TNL address and GTP TEID of the secondary base station to the S-GW, and the secondary base station transmits by the primary base station Receive the S-GW uplink TNL address and GTP TEID. The sending unit 12 is further configured to send the received uplink data sent by the UE to the S-GW, whereby the secondary base station receives the received downlink data sent by the S-GW. To the UE.

  In the data exchange apparatus in the present embodiment, the secondary base station initiates an S1 interface setup request to set up an S1 interface that can be used to perform bi-directional data transmission after being triggered by the primary base station or configured by the OAM. In order to realize the implementation of bidirectional data exchange between the primary base station and the secondary base station, by using the S1 interface.

  FIG. 10 is a schematic view of a data exchange apparatus according to a second embodiment of the present invention. The device in the present embodiment is a primary base station, and as shown in the figure, the data exchange device in the present embodiment comprises in particular: a transmitting unit 21, a receiving unit 22 and a switching unit 23.

  The sending unit 21 is configured to send a first message to the secondary base station, wherein the first message is used to notify the secondary base station to set up the S1 interface. The receiving unit 22 is configured to receive the S1 interface setup request sent by the secondary base station. The transmitting unit 21 is further configured to transmit the S1 interface setup response to the secondary base station. The switching unit 23 is configured to perform switching with the secondary base station by using the S1 interface.

  The switching unit 23 may comprise a transmitting unit 21 and / or a receiving unit 22 or may be another unit having transmitting and / or receiving functions.

  Preferably, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or the S1 interface setup response indicates an inter-base station coordination service identifier To communicate.

  Preferably, the receiving unit 22 is further configured to receive the relationship information between the secondary base station and the primary base station from the OAM, and the transmitting unit 21 is further configured to transmit the first message to the secondary base station. Be done.

  Preferably, the sending unit 21 is further configured to send the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) to the secondary base station, and the switching unit 23 is sent from the secondary base station , Configured to receive uplink data received from a user equipment (UE), transmit uplink data to the SGW, and / or forward downlink data from the SGW to a secondary base station, thereby The secondary base station transmits downlink data to the UE.

  Preferably, the transmitting unit 21 transmits the downlink TNL address received by the secondary base station and the received GTP TEID transmitted by the secondary base station to the SGW by using the MME, and the uplink TNL address of the SGW. And the GTP TEID to the secondary base station, whereby the secondary base station transmits the received uplink data sent by the UE to the SGW, and the secondary base station is sent by the SGW And transmit the received downlink data to the UE.

  In the data exchange apparatus in the present embodiment, the secondary base station initiates an S1 interface setup request to set up an S1 interface that can be used to perform bi-directional data transmission after being triggered by the primary base station or configured by the OAM. In order to realize the implementation of bidirectional data exchange between the primary base station and the secondary base station, by using the S1 interface.

  FIG. 11 is a schematic view of a data exchange apparatus according to a third embodiment of the present invention. The device in this embodiment is a primary base station, and as shown in the figure, the data exchange device in this embodiment includes in particular: a transmitting unit 31, a receiving unit 32 and a switching unit 33.

  The sending unit 31 is configured to send an X2 handover request message to the secondary base station, wherein the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station , The receiving unit 32 is configured to receive the X2 handover request response sent by the secondary base station, and the switching unit 33 performs data exchange with the secondary base station by using the X2 interface Configured

  The switching unit 33 may include a transmitting unit 31 and / or a receiving unit 32, or may be another unit having transmitting and / or receiving functions.

  In particular, the tunnel address information includes: TNL address and GTP TEID assigned to the UE by the primary base station. The X2 handover request message conveys an inter-base station coordinated service identifier and / or the X2 handover request response conveys an inter-base station coordinated service identifier.

  Preferably, the apparatus further comprises a control unit 34, wherein the control unit 34 is configured to update or release the GTP tunnel associated with the X2 interface or the UE, and the transmitting unit 31 secondary to the update or release message. It is further configured to transmit to the base station, whereby the secondary base station updates or releases the X2 interface association or the GTP tunnel of the UE. The update or release message carries an inter-base station coordinated service identifier and a bearer identifier.

  Regarding the data exchange apparatus in the present embodiment, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, whereby the GTP tunnel from the secondary base station to the primary base station is It can be set up, ie, a bidirectional GTP tunnel is set up. Therefore, bi-directional data transmission can be performed using the X2 interface setup in this embodiment, thereby realizing bi-directional data exchange between the primary base station and the secondary base station.

  FIG. 12 is a schematic view of a data exchange apparatus according to a fourth embodiment of the present invention. The device in this embodiment is a secondary base station, and as shown in the figure, the data exchange device in this embodiment includes in particular: a receiving unit 41, a transmitting unit 42 and a switching unit 43.

  The receiving unit 41 is configured to receive the X2 handover request message sent by the primary base station, wherein the X2 handover request message is a tunnel address assigned to the user equipment (UE) by the primary base station The information is included, the transmitting unit 42 is configured to transmit an X2 handover request response to the primary base station, and the switching unit 43 is arranged to perform data exchange with the primary base station by using the X2 interface Configured

  The switching unit 43 may include a receiving unit 41 and / or a transmitting unit 42, or may be another unit having transmitting and / or receiving functions.

  In particular, the tunnel address information includes: TNL address and GTP TEID assigned to the UE by the primary base station. The X2 handover request message conveys an inter-base station coordinated service identifier and / or the X2 handover request response conveys an inter-base station coordinated service identifier.

  Preferably, the receiving unit 41 is configured to receive the update or release message sent by the primary base station. The apparatus further comprises a control unit 44, which is configured to update or release the X2 interface association or the GTP tunnel of the UE. The update or release message carries an inter-base station coordinated service identifier and a bearer identifier.

  Regarding the data exchange apparatus in the present embodiment, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, whereby the GTP tunnel from the secondary base station to the primary base station is It can be set up, ie, a bidirectional GTP tunnel is set up. Therefore, bi-directional data transmission can be performed using the X2 interface setup in this embodiment, thereby realizing bi-directional data exchange between the secondary base station and the primary base station.

  FIG. 13 is a schematic view of a data exchange apparatus according to a fifth embodiment of the present invention. The device in this embodiment is a primary base station, and as shown in the figure, the data exchange device in this embodiment includes in particular: a transmitting unit 51, a receiving unit 52 and a switching unit 53.

  The transmitting unit 51 is configured to transmit an X3 interface setup request to the secondary base station, wherein the X3 interface has the capability of two-way data communication. The receiving unit 52 is configured to receive the X3 interface setup response sent by the secondary base station. The switching unit 53 is configured to perform two-way data exchange with the secondary base station by using the X3 interface.

  The switching unit 53 may comprise a transmitting unit 51 and / or a receiving unit 52 or may be another unit having transmitting and / or receiving functions.

  In particular, the request to set up the X3 interface conveys an inter-base station coordination service identifier and / or the response setting up the X3 interface conveys an inter-base station coordination service identifier. X3 interface includes: S1 interface.

  Preferably, the sending unit 51 is further configured to send the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) to the secondary base station. The switching unit 53 receives the uplink data sent by the user equipment (UE) and forwarded by the secondary base station, sends the uplink data to the serving gateway (S-GW), and is sent by the S-GW The downlink base station is specifically configured to transmit downlink data to the secondary base station, whereby the secondary base station transmits downlink data to the UE.

  Preferably, the transmitting unit 51 transmits the downlink TNL address and GTP TEID of the secondary base station to the S-GW and the uplink TNL address and GTP TEID of the S-GW to the secondary base station by using the MME. Configured to transmit, whereby the secondary base station transmits the received uplink data sent by the UE to the S-GW and the received downlink data sent by the S-GW to the UE Send.

  With respect to the data exchange apparatus in this embodiment, the primary base station sends a request to set up the X3 interface, which can set up the X3 interface from the primary base station to the secondary base station, the X3 interface being an existing interface, for example, It may be realized by the S1 interface, or it may be a newly defined interface having the capability of two-way data communication. Therefore, bi-directional data transmission can be performed using the X3 interface setup in this embodiment, thereby realizing bi-directional data exchange between the primary base station and the secondary base station.

  FIG. 14 is a schematic view of a data exchange apparatus according to a sixth embodiment of the present invention. The device in this embodiment is a secondary base station, and as shown in the figure, the data exchange device in this embodiment includes in particular: a receiving unit 61, a transmitting unit 62 and a switching unit 63.

  The receiving unit 61 is configured to receive the X3 interface setup request sent by the primary base station, where the X3 interface has the capability of two-way data communication. The transmitting unit 62 is configured to transmit an X3 interface setup response to the primary base station. The switching unit 63 is configured to perform bidirectional data exchange with the primary base station by using the X3 interface.

  The switching unit 63 may include a receiving unit 61 and / or a transmitting unit 62 or may be another unit having transmitting and / or receiving functions.

  In particular, the request to set up the X3 interface conveys an inter-base station coordination service identifier and / or the response setting up the X3 interface conveys an inter-base station coordination service identifier. X3 interface includes: S1 interface.

  Preferably, the receiving unit 61 is further configured to receive the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) sent by the primary base station, and the switching unit 63 is a user equipment It is specifically configured to transmit the transferred uplink data sent by (UE) to the primary base station, whereby the primary base station sends the uplink data to the serving gateway (S-GW) , Downlink data transmitted by the primary base station, transmitted by the S-GW, and then transmitted by the primary base station, whereby the secondary base station transmits the downlink data to the UE.

  Preferably, the switching unit 63 receives the S-GW uplink transport network layer (TNL) address and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) sent by the primary base station; It is further configured to send the received uplink data sent by the UE to the S-GW, and send the downlink data received from the S-GW to the UE.

  With respect to the data exchange apparatus in the present embodiment, the secondary base station receives the request to set up the X3 interface transmitted by the primary base station, whereby the X3 interface from the secondary base station to the primary base station can be set up, and the X3 interface May be realized by an existing interface, for example, an S1 interface, or may be a newly defined interface having the capability of two-way data communication. Therefore, bi-directional data transmission can be performed using the X3 interface setup in this embodiment, thereby realizing bi-directional data exchange between the secondary base station and the primary base station.

  FIG. 15 is a schematic view of a data exchange apparatus according to a seventh embodiment of the present invention. The device in this embodiment is a mobility management entity (MME), and as shown in the figure, the data exchange device in this embodiment comprises in particular: a receiving unit 71 and a transmitting unit 72.

  The receiving unit 71 is configured to receive a first message sent by the primary base station, wherein the first message cooperates with the primary base station to serve user equipment (UE) The first message includes an identifier of the UE and an identifier of the secondary base station. The transmitting unit 72 is configured to transmit a second message to the secondary base station, wherein the second message requests the secondary base station to cooperate with the primary base station to serve the UE. The second message contains the identifier of the UE. The receiving unit 71 is further configured to receive a first response returned by the secondary base station, wherein the first response is secondary to cooperating with the primary base station to serve the UE. Used to indicate information that the base station has agreed. The transmitting unit 72 is further configured to transmit a second response to the primary base station such that the primary base station and the secondary base station cooperate to serve the UE.

  Preferably, the transmitting unit 72 is further configured to notify the S-GW corresponding to the UE of the address information of the secondary base station, and notify the address information of the S-GW to the secondary base station, thereby the secondary base station. The station performs data exchange with the S-GW for the UE. The address information of the secondary base station includes: TNL address and GTP TEID of the secondary base station. The S-GW address information includes: S-GW TNL address information and GTP TEID.

  With respect to the data exchange apparatus in this embodiment, the network element MME of the core network is used to support data exchange, thereby realizing that the primary base station and the secondary base station cooperate to serve the UEs. Do. The secondary base station is used to directly perform data transmission with the S-GW, whereby different base stations may serve different bearers for inter-base station coordination service, whereby to the UE Improve service quality. Existing messages are reused as much as possible.

  FIG. 16 is a schematic view of a data exchange apparatus according to an eighth embodiment of the present invention. The apparatus in the present embodiment is a secondary base station, and as shown in the figure, the data exchange apparatus in the present embodiment includes in particular: a receiving unit 81 and a transmitting unit 82.

  The receiving unit 81 is configured to receive a second message sent by the MME, wherein the second message is sent to the secondary base station to cooperate with the primary base station to serve the UE. The second message contains the identifier of the UE, which is used to request. The transmitting unit 82 is configured to transmit a first response to the MME, wherein the first response indicates that the secondary base station has agreed to cooperate with the primary base station to serve the UE. Used to indicate information, whereby the MME sends a second response to the primary base station, where the second response indicates that the primary base station cooperates with the secondary base station to serve the UE Used to notify you of

  Preferably, the receiving unit 81 is further configured to receive the address information of the S-GW corresponding to the UE sent by the MME, the apparatus further comprises a switching unit 83, the switching unit 83 is an S-GW Are configured to perform data exchange with the S-GW for the UE according to the address information of Address information of S-GW includes: TNL address of S-GW and GTP TEID.

  The switching unit 83 may include a receiving unit 81 and / or a transmitting unit 82, or may be another unit having transmitting and / or receiving functions.

  Preferably, the switching unit 83 is further configured to send the received uplink data sent by the UE to the S-GW and send the received downlink data sent by the S-GW to the UE ing.

  With respect to the data exchange apparatus in this embodiment, the network element MME of the core network is used to support data exchange, thereby realizing that the primary base station and the secondary base station cooperate to serve the UEs. Do. The secondary base station is used to directly perform data transmission with the S-GW, whereby different base stations may serve different bearers for inter-base station coordination service, whereby to the UE Improve service quality. Existing messages are reused as much as possible.

  FIG. 17 is a schematic view of another data exchange apparatus according to the first embodiment of the present invention. The apparatus in the present embodiment is a secondary base station, and as shown in the figure, the present embodiment comprises a network interface 111, a processor 112 and a memory 113. In some cases, the apparatus further comprises a system bus 114 configured to connect the network interface 111, the processor 112, and the memory 113. In some cases, the network interface 111 and the processor 112 are connected, and the processor 112 and the memory 113 are connected.

  Network interface 111 is configured to communicate with an external device.

  Memory 113 may be permanent memory, such as a hard disk drive and flash memory, with memory 113 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 113 and then accessed by processor 112 to execute the following instructions: the first sent by the primary base station An instruction used to receive a message or to be configured by an operation, management and maintenance system (OAM) to receive relationship information between a secondary base station and a primary base station, where: The message is used to notify the secondary base station to set up the S1 interface, and an instruction used to send the S1 interface setup request to the primary base station, the S1 interface setup sent by the primary base station Instructions used to receive the response, and, instructions used to perform the exchange of the primary base station by using the S1 interface to an. The processor is configured to execute an application program.

  In particular, the first message conveys an inter-base station coordinated service identifier, the S1 interface setup request conveys an inter-base station coordinated service identifier, and / or the S1 interface setup response indicates an inter-base station coordinated service identifier. introduce. The first message is transmitted by the primary base station after the primary base station receives the relationship information between the secondary base station and the primary base station from the OAM.

  Preferably, the application program further comprises: instructions used to receive the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) sent by the primary base station.

  Preferably, by using the S1 interface, the instructions used to perform the exchange with the primary base station include: primary base station received uplink data transmitted by a user equipment (UE) Are used to transmit to the primary base station to transmit uplink data to the S-GW and / or downlinks transferred by the primary base station from the S-GW. Instructions used to receive data and transmit downlink data to the UE.

  Preferably, the application program further comprises: for transmitting to the S-GW the received downlink TNL address of the secondary base station and the received GTP TEID transmitted by the secondary base station by using the MME The instruction used and the instruction used to transmit the S-GW's uplink TNL address and GTP TEID to the secondary base station, whereby the secondary base station transmits the received up transmitted by the UE. The link data is sent to the S-GW, and the secondary base station sends the received downlink data sent by the S-GW to the UE.

  In the data exchange apparatus in the present embodiment, the secondary base station initiates an S1 interface setup request to set up an S1 interface that can be used to perform bi-directional data transmission after being triggered by the primary base station or configured by the OAM. In order to realize the implementation of bidirectional data exchange between the primary base station and the secondary base station, by using the S1 interface.

  FIG. 18 is a schematic view of another data exchange apparatus according to the second embodiment of the present invention. The apparatus in the present embodiment is a primary base station, and as shown in the figure, the present embodiment comprises a network interface 121, a processor 122 and a memory 123. In some cases, the device further comprises a system bus 124 configured to connect the network interface 121, the processor 122, and the memory 123. In some cases, the network interface 121 and the processor 122 are connected, and the processor 122 and the memory 123 are connected.

  Network interface 121 is configured to communicate with an external device.

  Memory 123 may be permanent memory, such as a hard disk drive and flash memory, with memory 123 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 123 and then accessed by processor 122 to execute the following instructions: send first message to secondary base station Command to use to notify the secondary base station to set up the S1 interface, where the first message is used to receive the S1 interface setup request sent by the secondary base station Command used for transmitting the S1 interface setup response to the secondary base station, and used to perform exchange with the secondary base station by using the S1 interface Command. The processor is configured to execute an application program.

  Preferably, the first message conveys an inter-base station coordination service identifier, the S1 interface setup request conveys an inter-base station coordination service identifier, and / or the S1 interface setup response indicates an inter-base station coordination service identifier To communicate.

  Preferably, the instructions used to send the first message to the secondary base station include: instructions used to receive the relationship information between the secondary base station and the primary base station from the OAM; Instruction used to send the first message to the secondary base station.

  Preferably, the application program further comprises: Instructions used to transmit the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) to the secondary base station.

  Preferably, by using the S1 interface, the instructions used to perform the exchange with the secondary base station include: uplink data transmitted by the secondary base station and received from the user equipment (UE) Are used to receive uplink data, and / or are used to transfer downlink data from the S-GW to the secondary base station. And the secondary base station transmits downlink data to the UE.

  Preferably, the application program further comprises: for transmitting to the S-GW the received downlink TNL address of the secondary base station and the received GTP TEID transmitted by the secondary base station by using the MME The instruction used and the instruction used to transmit the S-GW's uplink TNL address and GTP TEID to the secondary base station, whereby the secondary base station transmits the received up transmitted by the UE. The link data is sent to the S-GW, and the secondary base station sends the received downlink data sent by the S-GW to the UE.

  In the data exchange apparatus in the present embodiment, the secondary base station initiates an S1 interface setup request to set up an S1 interface that can be used to perform bi-directional data transmission after being triggered by the primary base station or configured by the OAM. In order to realize the implementation of bidirectional data exchange between the primary base station and the secondary base station, by using the S1 interface.

  FIG. 19 is a schematic view of another data exchange apparatus according to the third embodiment of the present invention. As shown, the apparatus in this embodiment is a primary base station, and this embodiment comprises a network interface 131, a processor 132 and a memory 133. In some cases, the apparatus further comprises a system bus 134 configured to connect the network interface 131, the processor 132, and the memory 133. In some cases, the network interface 131 and the processor 132 are connected, and the processor 132 and the memory 133 are connected.

  Network interface 131 is configured to communicate with an external device.

  Memory 133 may be permanent memory, such as a hard disk drive and flash memory, with memory 133 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 133 and then accessed by processor 132 to execute the following instructions: X2 handover request message to secondary base station , And the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, and the X2 hand transmitted by the secondary base station Instructions used to receive over-request responses and instructions used to perform data exchange with the secondary base station by using the X2 interface. The processor is configured to execute an application program.

  In particular, the tunnel address information includes: TNL address and GTP TEID assigned to the UE by the primary base station. The X2 handover request message conveys an inter-base station coordinated service identifier and / or the X2 handover request response conveys an inter-base station coordinated service identifier.

  Preferably, the application program further comprises: an X2 interface association or instructions used to update or release a GTP tunnel associated with the UE, and send an update or release message to the secondary base station, The secondary base station updates or releases X2 interface association or general packet radio service tunneling protocol GTP tunnel of the UE. The update or release message carries an inter-base station coordinated service identifier and a bearer identifier.

  Regarding the data exchange apparatus in the present embodiment, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, whereby the GTP tunnel from the secondary base station to the primary base station is It can be set up, ie, a bidirectional GTP tunnel is set up. Therefore, bi-directional data transmission can be performed using the X2 interface setup in this embodiment, thereby realizing bi-directional data exchange between the primary base station and the secondary base station.

  FIG. 20 is a schematic view of another data exchange apparatus according to the fourth embodiment of the present invention. The apparatus in the present embodiment is a secondary base station, and as shown in the figure, the present embodiment includes a network interface 141, a processor 142, and a memory 143. In some cases, the device further comprises a system bus 144 configured to connect the network interface 141, the processor 142, and the memory 143. In some cases, the network interface 141 and the processor 142 are connected, and the processor 142 and the memory 143 are connected.

  Network interface 141 is configured to communicate with an external device.

  Memory 143 may be permanent memory, such as a hard disk drive and flash memory, with memory 143 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 143 and then accessed by processor 142 to execute the following instructions: X2 hand sent by primary base station An instruction used to receive an over request message, wherein the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, and the X2 handover request response Instructions used to transmit to the primary base station, and instructions used to perform data exchange with the primary base station by using the X2 interface. The processor is configured to execute an application program.

  In particular, the tunnel address information includes: TNL address and GTP TEID assigned to the UE by the primary base station. The X2 handover request message conveys an inter-base station coordinated service identifier and / or the X2 handover request response conveys an inter-base station coordinated service identifier.

  Preferably, the application program further comprises: receiving an update or release message sent by the primary base station, used to associate or associate the X2 interface or the General Packet Radio Service Tunneling Protocol GTP tunnel of the UE Command. The update or release message carries an inter-base station coordinated service identifier and a bearer identifier.

  Regarding the data exchange apparatus in the present embodiment, the X2 handover request message includes tunnel address information allocated to the user equipment (UE) by the primary base station, whereby the GTP tunnel from the secondary base station to the primary base station is It can be set up, ie, a bidirectional GTP tunnel is set up. Therefore, bi-directional data transmission can be performed using the X2 interface setup in this embodiment, thereby realizing bi-directional data exchange between the secondary base station and the primary base station.

  FIG. 21 is a schematic view of another data exchange apparatus according to the fifth embodiment of the present invention. The apparatus in this embodiment is a primary base station, and as shown in the figure, this embodiment includes a network interface 151, a processor 152, and a memory 153. In some cases, the apparatus further comprises a system bus 154 configured to connect the network interface 151, the processor 152, and the memory 153. In some cases, the network interface 151 and the processor 152 are connected, and the processor 152 and the memory 153 are connected.

  Network interface 151 is configured to communicate with an external device.

  Memory 153 may be permanent memory, such as a hard disk drive and flash memory, with memory 153 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 153 and then accessed by processor 152 to execute the following instructions: X3 interface setup request to secondary base station An instruction used to transmit, where the X3 interface has the capability of two-way data communication and is used to receive an X3 interface setup response transmitted by the secondary base station, and , Instructions used to perform two-way data exchange with the secondary base station by using the X3 interface. The processor is configured to execute an application program.

  In particular, the request to set up the X3 interface conveys an inter-base station coordination service identifier and / or the response setting up the X3 interface conveys an inter-base station coordination service identifier. X3 interface includes: S1 interface.

  Preferably, the application program further comprises instructions that may be used to enable the processor and system to perform the following processes: Internet Protocol (IP) Address of Primary Base Station and Tunnel Endpoint Identifier (TEID) Transmitted by the primary base station to the secondary base station.

  Preferably, the application program further comprises: Instructions used to transmit the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) to the secondary base station. By using the X3 interface, the instructions used to perform two-way data exchange with the secondary base station include: uplink data transmitted by the user equipment (UE) and forwarded by the secondary base station Used to send the uplink data to the serving gateway (S-GW), and to send downlink data sent by the S-GW to the secondary base station And the secondary base station transmits downlink data to the UE.

  Preferably, after the primary base station receives the X3 interface setup response sent by the secondary base station, the application program further comprises: downlink of the secondary base station by using a mobility management entity (MME) Transport Network Layer (TNL) Address and Generic Packet Radio Service Tunneling Protocol Tunnel Instruction Identifier (GTP TEID) Instructions used to send to the S-GW, S-GW uplink TNL address and GTP TEID An instruction used to transmit to the secondary base station, whereby the secondary base station transmits the received uplink data sent by the UE to the S-GW, and also sent by the S-GW Downlink received Instructions used to send over data to the UE.

  With respect to the data exchange apparatus in this embodiment, the primary base station sends a request to set up the X3 interface, which can set up the X3 interface from the primary base station to the secondary base station, the X3 interface being an existing interface, for example, It may be realized by the S1 interface, or it may be a newly defined interface having the capability of two-way data communication. Therefore, bi-directional data transmission can be performed using the X3 interface setup in this embodiment, thereby realizing bi-directional data exchange between the primary base station and the secondary base station.

  FIG. 22 is a schematic view of another data exchange apparatus according to the sixth embodiment of the present invention. The device in this embodiment is a secondary base station, and as shown in the figure, the device comprises a network interface 161, a processor 162 and a memory 163. In some cases, the apparatus further comprises a system bus 164 configured to connect the network interface 161, the processor 162, and the memory 163. In some cases, the network interface 161 and the processor 162 are connected, and the processor 162 and the memory 163 are connected.

  Network interface 161 is configured to communicate with an external device.

  Memory 163 may be permanent memory, such as a hard disk drive and flash memory, with memory 163 having software modules and device driver programs. The software modules may comprise various functional modules capable of carrying out the aforementioned method of the invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 163 and then accessed by processor 162 to execute the following instructions: X3 interface sent by primary base station An instruction used to receive a setup request, wherein the X3 interface has bi-directional data communication capabilities, and is used to transmit an X3 interface setup response to the primary base station, and , Instructions used to perform two-way data exchange with the primary base station by using the X3 interface. The processor is configured to execute an application program.

  In particular, the request to set up the X3 interface conveys an inter-base station coordination service identifier and / or the response setting up the X3 interface conveys an inter-base station coordination service identifier. X3 interface includes: S1 interface.

  Preferably, the application program further comprises instructions that may be used to enable the processor and system to perform the following processes: Internet Protocol (IP) address of the primary base station, transmitted by the primary base station And receiving a tunnel endpoint identifier (TEID).

  Preferably, the application program further comprises instructions used to receive the internet protocol (IP) address of the primary base station and the tunnel endpoint identifier (TEID) sent by the primary base station. By using the X3 interface, the instructions used to perform two-way data exchange with the primary base station include: to transmit uplink data from the user equipment (UE) to the primary base station The instruction to be used, whereby the primary base station transmits uplink data to the serving gateway (S-GW) and downlink data transmitted by the primary base station from the S-GW An instruction that is used to receive and send downlink data to the UE.

  Preferably, the application program further comprises: uplink transport network layer (TNL) address of the S-GW and generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) sent by the primary base station A command used to send received uplink data received by the UE, sent by the UE to the S-GW, and sent downlink data received from the S-GW to the UE.

  With respect to the data exchange apparatus in the present embodiment, the secondary base station receives the request to set up the X3 interface transmitted by the primary base station, whereby the X3 interface from the secondary base station to the primary base station can be set up, and the X3 interface May be realized by an existing interface, for example, an S1 interface, or may be a newly defined interface having the capability of two-way data communication. Therefore, bi-directional data transmission can be performed using the X3 interface setup in this embodiment, thereby realizing bi-directional data exchange between the secondary base station and the primary base station.

  FIG. 23 is a schematic view of another data exchange apparatus according to the seventh embodiment of the present invention. The apparatus in the present embodiment is a mobility management entity (MME), and as shown in the figure, the present embodiment comprises a network interface 171, a processor 172 and a memory 173. In some cases, the apparatus further comprises a system bus 174 configured to connect the network interface 171, the processor 172, and the memory 173. In some cases, the network interface 171 and the processor 172 are connected, and the processor 172 and the memory 173 are connected.

  Network interface 171 is configured to communicate with external devices.

  Memory 173 may be permanent memory, such as a hard disk drive and flash memory, with memory 173 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into memory 173 and then accessed by processor 172 to execute the following instructions: the first sent by the primary base station An instruction used to receive a message, wherein the first message is to request a secondary base station to cooperate with a primary base station to serve a user equipment (UE) An instruction used and used to send a second message to a secondary base station, wherein the second message is a secondary base station to cooperate with a primary base station to serve the UE First used by the secondary base station to request the An instruction used to receive the SPNS, where the first response conveys information that the secondary base station has agreed to cooperate with the primary base station to serve the UE, And an instruction used to send a second response to the primary base station, whereby the primary base station and the secondary base station cooperate to serve the UE. The processor is configured to execute an application program.

  Preferably, the application program notifies the serving gateway (S-GW) corresponding to the UE of the address information of the secondary base station, and the instruction used to notify the address information of the S-GW to the secondary base station. Further included, whereby the secondary base station performs data exchange with the S-GW for the UE. The address information of the secondary base station includes: Transport network layer (TNL) address of the secondary base station and General Packet Radio Service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID). Address information of S-GW includes: TNL address of S-GW and GTP TEID.

  With respect to the data exchange apparatus in this embodiment, the network element MME of the core network is used to support data exchange, thereby realizing that the primary base station and the secondary base station cooperate to serve the UEs. Do. The secondary base station is used to directly perform data transmission with the S-GW, whereby different base stations may serve different bearers for inter-base station coordination service, whereby to the UE Improve service quality. Existing messages are reused as much as possible.

  FIG. 24 is a schematic view of another data exchange apparatus according to the eighth embodiment of the present invention. The apparatus in this embodiment is a secondary base station, and as shown in the figure, this embodiment comprises a network interface 181, a processor 182 and a memory 183. In some cases, the apparatus further comprises a system bus 184 configured to connect the network interface 181, the processor 182, and the memory 183. In some cases, the network interface 181 and the processor 182 are connected, and the processor 182 and the memory 183 are connected.

  Network interface 181 is configured to communicate with an external device.

  Memory 183 may be permanent memory, such as a hard disk drive and flash memory, with memory 183 having software modules and device driver programs. The software module can execute various functional modules in the above described method of the present invention. The device driver program may be a network and interface driver program.

  When started, software components, eg, software modules and / or device driver programs, are loaded into the memory 183 and then accessed by the processor 182 to execute the following instructions: sent by the mobility management entity (MME) Command used to receive the second message, where the second message is used to request the secondary base station to cooperate with the primary base station to serve the UE And an instruction used to send a first response to the MME, wherein the first response is a secondary base station in cooperation with the primary base station to serve the UE. Communicating that the MME has agreed, which causes the MME to Sends Pons, second response, in order to serve the UE, the primary base station is used to notify that cooperates with the secondary base station. The processor is configured to execute an application program.

  Preferably, after the secondary base station has sent the first response to the MME, the application program further comprises: to receive the address information of the serving gateway (S-GW) corresponding to the UE sent by the MME And an instruction used to perform data exchange with the S-GW for the UE according to the S-GW's address information. The S-GW's address information includes: S-GW's Transport Network Layer (TNL) address and General Packet Radio Service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID).

  Preferably, the instructions used to perform data exchange with the S-GW for the UE according to the address information of the S-GW include: transmit uplink data received from the UE to the S-GW, S -Instructions used to send downlink data received from the GW to the UE.

  With respect to the data exchange apparatus in this embodiment, the network element MME of the core network is used to support data exchange, thereby realizing that the primary base station and the secondary base station cooperate to serve the UEs. Do. The secondary base station is used to directly perform data transmission with the S-GW, whereby different base stations may serve different bearers for inter-base station coordination service, whereby to the UE Improve service quality. Existing messages are reused as much as possible.

  Those skilled in the art will further recognize that the units and algorithmic steps may be realized in electronic hardware, computer software, or a combination thereof, in combination with the examples described in the embodiments disclosed herein. Good. The foregoing has generally described the components and steps of each example according to function in order to provide a clear description of the compatibility between hardware and software. Whether a function is performed by hardware or software depends on the particular application of the technical solution and the constraints of the design. Those skilled in the art may use different methods to implement the described functionality for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

  The steps of the method or algorithm described in the embodiments disclosed herein may be realized by hardware, a software module executed by a processor, or a combination thereof. The software module may be random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or It may reside in any other form of storage medium that is well known in the art.

  The foregoing specific implementation describes the objects, technical solutions, and benefits of the present invention in more detail. It should be understood that the foregoing description is merely a specific implementation of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements or improvements that can be made without departing from the principles of the present invention are within the protection scope of the present invention.

11 Receiver units
12 sender
13 Replacement unit
21 sender unit
22 receiver unit
23 exchange unit
31 transmitter
32 receiver units
33 Replacement unit
34 control unit
41 Receiver unit
42 sender
43 Replacement unit
44 control unit
51 sender
52 receiver units
53 Replacement unit
61 Receiver
62 transmitter
63 Replacement unit
71 Receiver
72 sender
81 Receiver
82 sender
83 Replacement unit
111 Network interface
112 processor
113 memory
114 System bus
121 Network interface
122 processor
123 memory
124 System bus
131 Network interface
132 processor
133 Memory
134 System bus
141 Network Interface
142 processor
143 Memory
144 system bus
151 Network interface
152 processor
153 memory
154 system bus
161 network interface
162 processor
163 memory
164 system bus
171 network interface
172 processor
173 memory
174 System bus
181 Network interface
182 processor
183 memory
184 system bus

Claims (111)

A data exchange method,
The secondary base station receives the first message sent by the primary base station, or receives the relationship information between the secondary base station configured by the operation, management and maintenance system (OAM) and the primary base station The first message is used to notify the secondary base station to set up an S1 interface,
Sending an S1 interface setup request to the primary base station by the secondary base station;
Receiving an S1 interface setup response sent by the primary base station;
And D. performing an exchange with said primary base station by said secondary base station using said S1 interface. The first message conveys an inter-base station coordinated service identifier,
The S1 interface setup request conveys an inter-base station coordinated service identifier and / or
The data exchange method according to claim 1, wherein the S1 interface setup response conveys an inter-base station coordinated service identifier.   The first message is transmitted by the primary base station after the primary base station receives the relationship information between the secondary base station and the primary base station from the OAM. Data exchange method. Receiving, by the secondary base station, an internet protocol (IP) address and a tunnel endpoint identifier (TEID) of the primary base station transmitted by the primary base station;
The secondary base station performing the exchange with the primary base station using the S1 interface;
The secondary base station transmits the received uplink data transmitted by the user equipment (UE) to the primary base station such that the primary base station transmits uplink data to a service providing gateway (SGW) Step and / or
The method according to any one of claims 1 to 3, comprising receiving downlink data from the SGW transferred by the primary base station by the secondary base station and transmitting the downlink data to the UE. Data exchange method described in. After the step of receiving the S1 interface setup response sent by the primary base station
The primary base station transmits the downlink transport network layer (TNL) address of the secondary base station and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW using a mobility management entity (MME) And the downlink TNL address and GTP TEID of the secondary base station by the secondary base station such that the secondary base station receives the uplink TNL address and the GTP TEID of the SGW transmitted by the primary base station. Transmitting to the primary base station;
Transmitting the received uplink data transmitted by the UE to the SGW by the secondary base station, and transmitting the received downlink data transmitted by the SGW to the UE. The data exchange method according to any one of 1 to 3. A data exchange method,
Sending by the primary base station a first message to the secondary base station, wherein the first message is used to notify the secondary base station to set up an S1 interface;
Receiving by the primary base station an S1 interface setup request sent by the secondary base station;
Sending an S1 interface setup response to the secondary base station;
And D. performing an exchange with said secondary base station by said primary base station using said S1 interface. The first message conveys an inter-base station coordinated service identifier,
The S1 interface setup request conveys an inter-base station coordinated service identifier and / or
The data exchange method according to claim 6, wherein the S1 interface setup response conveys an inter-base station coordinated service identifier. Sending the first message to the secondary base station by the primary base station;
Receiving, by the primary base station from the operation, management and maintenance system (OAM), relationship information between the secondary base station and the primary base station, and transmitting the first message to the secondary base station The data exchange method according to claim 6 or 7. And transmitting, by the primary base station, an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) to the secondary base station,
The step of performing an exchange with the secondary base station by the primary base station using the S1 interface;
Receiving, by the primary base station, uplink data from a user equipment (UE) transferred by the secondary base station and transmitting the uplink data to a serving gateway (SGW); and / or
The data according to any one of claims 6 to 8, comprising the step of transferring downlink data from the SGW to the secondary base station such that the secondary base station transmits downlink data to the UE. method of exchange. After the step of transmitting the S1 interface setup response to the secondary base station,
The received downlink transport network layer (TNL) address of the secondary base station and the general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) transmitted by the secondary base station by the primary base station, Sending to the SGW using a mobility management entity (MME);
The secondary base station may transmit the received uplink data sent by the UE to the SGW, and may send the received downlink data sent by the SGW to the UE by the primary base station The data exchange method according to any one of claims 6 to 8, further comprising: transmitting the uplink TNL address and the GTP TEID of the SGW to the secondary base station. A data exchange method,
Sending an X2 handover request message to a secondary base station by the primary base station, wherein the X2 handover request message includes tunnel address information allocated by the primary base station to a user equipment (UE); Step and
Receiving by the primary base station an X2 handover request response sent by the secondary base station;
And D. performing data exchange with the secondary base station by the primary base station using an X2 interface.   The tunnel address information according to claim 11, wherein the tunnel address information comprises a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) allocated by the primary base station to the UE. Data exchange method. The X2 handover request message conveys an inter-base station coordinated service identifier and / or
The data exchange method according to claim 11 or 12, wherein the X2 handover request response carries an inter-base station coordinated service identifier.   Association of the X2 interface or associated with the UE by the primary base station such that the secondary base station updates or releases General Packet Radio Service Tunneling Protocol (GTP) tunnel associated with the X2 interface or associated with the UE The data exchange method according to any one of claims 11 to 13, further comprising: updating or releasing the GTP tunnel and sending an updating or release message to the secondary base station.   The data exchange method according to claim 14, wherein the update or release message conveys an inter-base station coordinated service identifier and a bearer identifier. A data exchange method,
Tunnel address information, wherein the secondary base station receives an X2 handover request message sent by the primary base station, wherein the X2 handover request message is assigned by the primary base station to a user equipment (UE) Including, step, and
Sending an X2 handover request response to the primary base station;
And D. performing data exchange with the primary base station using the X2 interface by the secondary base station.   The network according to claim 16, wherein said tunnel address information comprises a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) allocated by said primary base station to said UE. Data exchange method. The X2 handover request message conveys an inter-base station coordinated service identifier and / or
The data exchange method according to claim 16 or 17, wherein the X2 handover request response carries an inter-base station coordinated service identifier. Receiving by the secondary base station an update or release message sent by the primary base station;
19. The method according to any one of claims 16 to 18, further comprising: updating or releasing a General Packet Radio Service Tunneling Protocol (GTP) tunnel associated with the X2 interface or the UE by the secondary base station. Data exchange method.   The data exchange method according to claim 19, wherein the update or release message conveys an inter-base station coordinated service identifier and a bearer identifier. Sending a setup request of the X3 interface to the secondary base station by the primary base station, wherein the X3 interface has bi-directional data communication capability;
Receiving the setup response of the X3 interface transmitted by the secondary base station by the primary base station;
Performing bi-directional data exchange with the secondary base station using the X3 interface by the primary base station. The setup request of the X3 interface conveys an inter-base station coordinated service identifier and / or
22. The data exchange method of claim 21, wherein the setup response of the X3 interface conveys an inter-base station coordinated service identifier.   The data exchange method according to claim 21 or 22, wherein the X3 interface comprises an S1 interface. And transmitting, by the primary base station, an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) to the secondary base station,
Performing, by the primary base station, bi-directional data exchange with the secondary base station using the X3 interface;
Receiving uplink data transmitted by the user equipment (UE) and forwarded by the secondary base station by the primary base station and transmitting the uplink data to a service providing gateway (SGW);
Sending the downlink data sent by the SGW to the secondary base station by the primary base station such that the secondary base station sends downlink data to the UE. The data exchange method according to any one of the above. After the step of receiving the setup response of the X3 interface transmitted by the secondary base station by the primary base station,
The secondary base station may transmit the received uplink data sent by the UE to the SGW, and may send the received downlink data sent by the SGW to the UE by the primary base station, Transmitting the downlink transport network layer (TNL) address of the secondary base station and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW using a mobility management entity (MME); ,
The data exchange method according to any one of claims 21 to 23, further comprising the step of transmitting the uplink TNL address and the GTP TEID of the SGW to the secondary base station by the primary base station. A data exchange method,
Receiving by the secondary base station a setup request of the X3 interface transmitted by the primary base station, wherein the X3 interface has bidirectional data communication capability;
Transmitting the setup response of the X3 interface to the primary base station by the secondary base station;
Performing bi-directional data exchange with said primary base station by said secondary base station using said X3 interface. The setup request of the X3 interface conveys an inter-base station coordinated service identifier and / or
The data exchange method according to claim 26, wherein the setup response of the X3 interface conveys an inter-base station coordinated service identifier.   28. A data exchange method according to claim 26 or 27, wherein the X3 interface comprises an S1 interface. Receiving, by the secondary base station, an internet protocol (IP) address and a tunnel endpoint identifier (TEID) of the primary base station transmitted by the primary base station;
Performing, by the secondary base station, bidirectional data exchange with the primary base station using the X3 interface;
Transmitting uplink data from a user equipment (UE) to the primary base station by the secondary base station such that the primary base station transmits uplink data to a service providing gateway (SGW);
29. Receiving the downlink data from the SGW transmitted by the primary base station by the secondary base station and transmitting the downlink data to the UE. Data exchange method described in Section. After the step of transmitting the setup response of the X3 interface to the primary base station by the secondary base station,
The secondary base station receives the SGW uplink transport network layer (TNL) address and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) sent by the primary base station and sent by the UE The data exchange method according to any one of claims 26 to 28, further comprising the steps of transmitting the received uplink data to the SGW and transmitting the downlink data received from the SGW to the UE. . A data exchange method,
Receiving by the mobility management entity (MME) a first message sent by the primary base station, wherein the first message cooperates with the primary base station to serve user equipment (UE) Used to request the secondary base station to
Sending a second message to the secondary base station, wherein the second message is used to request the secondary base station to cooperate with the primary base station to serve the UE Step, and
Receiving a first response returned by the secondary base station, the secondary base station agreeing that the first response cooperates with the primary base station to serve the UE To convey the information
Transmitting a second response to the primary base station such that the primary base station and the secondary base station cooperate to service the UE. After the step of receiving the first response returned by the secondary base station
The address information of the secondary base station is notified to the SGW corresponding to the UE such that the secondary base station performs data exchange with the service providing gateway (SGW) for the UE, and the address information of the SGW is transmitted to the secondary The data exchange method according to claim 31, further comprising: notifying a base station. The address information of the secondary base station includes a transport network layer (TNL) address of the secondary base station and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID);
The data exchange method according to claim 32, wherein the address information of the SGW includes a TNL address of the SGW and a GTP TEID. A data exchange method,
Receiving by the secondary base station a second message sent by the mobility management entity (MME), wherein the second message cooperates with the primary base station to serve user equipment (UE) Used to request the secondary base station as
Sending a first response to the MME by the secondary base station such that the MME sends a second response to the primary base station, the first response serving the UE The secondary base station is used to convey information that the secondary base station has agreed to cooperate with the primary base station, and the second response is to serve the UE. And D. a method used to indicate that it cooperates with a station. After the step of transmitting the first response to the MME by the secondary base station,
Receiving by the secondary base station address information of a service providing gateway (SGW) corresponding to the UE, transmitted by the MME;
35. The data exchange method according to claim 34, further comprising the step of performing data exchange with the SGW for the UE according to the address information of the SGW by the secondary base station.   The data exchange method according to claim 35, wherein the address information of the SGW includes a transport network layer (TNL) address of the SGW and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID). The secondary base station performing data exchange with the SGW for the UE according to the address information of the SGW;
37. The data exchange method according to claim 35, comprising transmitting uplink data received from the UE to the SGW and transmitting downlink data received from the SGW to the UE by the secondary base station. . A data exchange device,
The device is a secondary base station,
A receiving unit, a transmitting unit, and a switching unit,
The receiving unit is configured to receive a first message transmitted by a primary base station, or relationship information between the secondary base station configured by an operation, management, and maintenance system (OAM) and the primary base station. Configured to receive
The first message is used to notify the secondary base station to set up an S1 interface,
The transmitting unit is configured to transmit an S1 interface setup request to the primary base station;
The receiving unit is configured to receive an S1 interface setup response sent by the primary base station;
A data exchange apparatus, wherein the switching unit is configured to perform switching with the primary base station using an S1 interface. The first message conveys an inter-base station coordinated service identifier,
The S1 interface setup request conveys an inter-base station coordinated service identifier and / or
39. The data exchange apparatus of claim 38, wherein the S1 interface setup response conveys an inter-base station coordinated service identifier.   40. The system according to claim 38, wherein the first message is transmitted by the primary base station after the primary base station receives the relationship information between the secondary base station and the primary base station from the OAM. Data exchange device. The receiving unit is configured to receive an internet protocol (IP) address and a tunnel endpoint identifier (TEID) of the primary base station sent by the primary base station;
The exchange unit
Configured to send received uplink data sent by the user equipment (UE) to the primary base station, whereby the primary base station sends the uplink data to a serving gateway (SGW) And / or
41. Data according to any one of the claims 38 to 40, configured to receive downlink data from the SGW forwarded by the primary base station and to transmit the downlink data to the UE. Exchange equipment. The transmitting unit is further configured to transmit a downlink transport network layer (TNL) address of the secondary base station and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the primary base station; Thereby, using the mobility management entity (MME), the primary base station transmits the downlink TNL address and GTP TEID of the secondary base station to the SGW, and the secondary base station transmits by the primary base station Receive the SGW uplink TNL address and GTP TEID,
The transmitting unit is further configured to transmit received uplink data transmitted by the UE to the SGW, whereby the secondary base station transmits the received downlink data transmitted by the SGW. The data exchange apparatus according to any one of claims 38 to 40, which transmits to the UE. A data exchange device,
The device is a primary base station,
A transmitting unit, a receiving unit, and a switching unit,
The transmitting unit is configured to transmit a first message to a secondary base station, and the first message is used to notify the secondary base station to set up an S1 interface.
The receiving unit is configured to receive by the primary base station an S1 interface setup request sent by the secondary base station;
The transmitting unit is further configured to transmit an S1 interface setup response to the secondary base station;
A data exchange apparatus, wherein the switching unit is configured to perform switching with the secondary base station using the S1 interface. The first message conveys an inter-base station coordinated service identifier,
The S1 interface setup request conveys an inter-base station coordinated service identifier and / or
44. The data exchange apparatus according to claim 43, wherein the S1 interface setup response conveys an inter-base station coordinated service identifier. The receiving unit is further configured to receive relationship information between the secondary base station and the primary base station from an OAM;
45. A data exchange apparatus according to claim 43 or 44, wherein the transmitting unit is further configured to transmit the first message to the secondary base station. The transmitting unit is further configured to transmit the IP address and TEID of the primary base station to the secondary base station;
The switching unit receives uplink data received from user equipment (UE), transmitted by the secondary base station, and transmits the uplink data to a serving gateway (SGW), and / or 46. Any one of claims 43 to 45 configured to transfer downlink data from the SGW to the secondary base station, whereby the secondary base station transmits the downlink data to the UE. Data exchange device as described.   The transmitting unit transmits, using the MME, the downlink TNL address received by the secondary base station and the received GTP TEID transmitted by the secondary base station to the SGW, and the uplink TNL address of the SGW. And GTP TEID to the secondary base station, whereby the secondary base station transmits the received uplink data sent by the UE to the SGW, and the secondary base station transmits the GTP TEID to the secondary base station. 46. A data exchange apparatus according to any one of claims 43 to 45, wherein the received downlink data sent by SGW is sent to the UE. A data exchange device,
The device is a primary base station,
A transmitting unit, a receiving unit, and a switching unit,
The transmitting unit is configured to transmit an X2 handover request message to a secondary base station;
The X2 handover request message includes tunnel address information allocated to a user equipment (UE) by the primary base station,
The receiving unit is configured to receive an X2 handover request response sent by the secondary base station;
A data exchange apparatus, wherein the switching unit is configured to perform data exchange with the secondary base station using an X2 interface.   49. The system of claim 48, wherein the tunnel address information comprises a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) allocated by the primary base station to the UE. Data exchange equipment. The X2 handover request message conveys an inter-base station coordinated service identifier and / or
50. The data exchange apparatus according to claim 48, wherein said X2 handover request response conveys an inter-base station coordinated service identifier. Further comprising a control unit,
The control unit is configured to update or release an X2 interface association or a GTP tunnel associated with the UE,
The transmitting unit is further configured to transmit an update or release message to the secondary base station, such that the secondary base station updates the X2 interface association or the UE general packet radio service tunneling protocol GTP tunnel or 51. A data exchange apparatus according to any one of claims 48 to 50 for releasing.   52. The data exchange apparatus of claim 51, wherein the update or release message conveys an inter-base station coordination service identifier and a bearer identifier. A data exchange device,
The device is a secondary base station,
A receiving unit, a transmitting unit, and a switching unit,
The receiving unit is configured to receive an X2 handover request message sent by a primary base station,
The X2 handover request message includes tunnel address information allocated to a user equipment (UE) by the primary base station,
The transmitting unit is configured to transmit an X2 handover request response to the primary base station;
A data exchange apparatus, wherein the switching unit is configured to perform data exchange with the primary base station using an X2 interface.   54. The method of claim 53, wherein the tunnel address information comprises a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) allocated by the primary base station to the UE. Data exchange equipment. The X2 handover request message conveys an inter-base station coordinated service identifier and / or
55. The data exchange apparatus according to claim 53, wherein the X2 handover request response transmits an inter-base station coordinated service identifier. The receiving unit is configured to receive an update or release message sent by the primary base station;
The apparatus further comprises a control unit
56. A data exchange apparatus according to any one of claims 53 to 55, wherein the control unit is configured to update or release X2 interface association or General Packet Radio Services Tunneling Protocol GTP tunnel of the UE.   57. The data exchange apparatus of claim 56, wherein the update or release message conveys an inter-base station coordination service identifier and a bearer identifier. A data exchange device,
The device is a primary base station,
A transmitting unit, a receiving unit, and a switching unit,
The transmitting unit is configured to transmit a setup request of an X3 interface to a secondary base station,
The X3 interface has bi-directional data communication capability,
The receiving unit is configured to receive the setup response of the X3 interface transmitted by the secondary base station;
Data exchange apparatus, wherein the switching unit is configured to perform bidirectional data exchange with the secondary base station using the X3 interface. The setup request of the X3 interface conveys an inter-base station coordinated service identifier and / or
59. The data exchange apparatus of claim 58, wherein the setup response of the X3 interface conveys an inter-base station coordinated service identifier.   60. A data exchange apparatus according to claim 58 or 59, wherein the X3 interface comprises an S1 interface. The transmitting unit is further configured to transmit an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) to the secondary base station;
The switching unit receives uplink data transmitted by the user equipment (UE) and transferred by the secondary base station, and transmits the uplink data to a service providing gateway (SGW), which is transmitted by the SGW 61. Data according to any one of claims 58 to 60, configured to transmit downlink data to the secondary base station, whereby the secondary base station transmits the downlink data to the UE. Exchange equipment.   The transmitting unit transmits the downlink transport network layer (TNL) address of the secondary base station and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW using the MME, and the SGW It is further configured to transmit the uplink TNL address and the GTP TEID to the secondary base station, whereby the secondary base station transmits the received uplink data transmitted by the UE to the SGW, by the SGW 61. A data exchange apparatus according to any one of claims 58 to 60, which transmits transmitted downlink data received to the UE. A data exchange device,
The device is a secondary base station,
A receiving unit, a transmitting unit, and a switching unit,
The receiving unit is configured to receive the setup request of the X3 interface transmitted by the primary base station,
The X3 interface has bi-directional data communication capability,
The transmitting unit is configured to transmit a setup response of the X3 interface to the primary base station;
A data exchange apparatus, wherein the switching unit is configured to perform bidirectional data exchange with the primary base station using the X3 interface. The setup request of the X3 interface conveys an inter-base station coordinated service identifier and / or
64. The data exchange apparatus of claim 63, wherein the setup response of the X3 interface conveys an inter-base station coordinated service identifier.   65. A data exchange apparatus according to claim 63 or 64, wherein the X3 interface comprises an S1 interface. The receiving unit is further configured to receive an internet protocol (IP) address and a tunnel endpoint identifier (TEID) of the primary base station transmitted by the primary base station;
The switching unit is configured to transmit uplink data transmitted from a user equipment (UE) to the primary base station, whereby the primary base station transmits the uplink data to a service providing gateway (SGW). 66. The method according to claim 63, wherein the secondary base station receives downlink data from the SGW sent by the primary base station and transmits the downlink data to the UE. The data exchange apparatus according to the above item.   The switching unit receives the uplink transport network layer (TNL) address of the SGW and the general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) sent by the primary base station and sent by the UE 66. The data according to any one of claims 63 to 65, further configured to transmit the received uplink data to the SGW and to transmit the downlink data received from the SGW to the UE. Exchange equipment. A data exchange device,
The device is a mobility management entity,
It has a receiver unit and a transmitter unit,
The receiving unit is configured to receive a first message sent by a primary base station,
The first message is used to request a secondary base station to cooperate with the primary base station to serve user equipment (UE);
The transmitting unit is configured to transmit a second message to the secondary base station;
The second message is used to request the secondary base station to cooperate with the primary base station to serve the UE.
The receiving unit is further configured to receive a first response returned by the secondary base station;
The first response conveys information that the secondary base station has agreed to cooperate with the primary base station to serve the UE.
The transmission unit is further configured to transmit a second response to the primary base station, whereby data exchange, wherein the primary base station and the secondary base station cooperate to serve the UE apparatus.   The transmitting unit is further configured to notify the service providing gateway (SGW) corresponding to the UE of the address information of the secondary base station and to notify the secondary base station of the address information of the SGW; The data exchange apparatus according to claim 68, wherein the secondary base station performs data exchange with the SGW for the UE. The address information of the secondary base station includes a transport network layer (TNL) address of the secondary base station and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID);
70. The data exchange apparatus according to claim 69, wherein said address information of said SGW includes a TNL address of said SGW and a GTP TEID. A data exchange device,
The device is a secondary base station,
It has a receiver unit and a transmitter unit,
The receiving unit is configured to receive a second message sent by a mobility management entity (MME),
The second message is used to request the secondary base station to cooperate with the primary base station to serve the UE.
The transmission unit is configured to transmit a first response to the MME,
The first response is used to indicate information that the secondary base station has agreed to cooperate with the primary base station to serve the UE, whereby the MME is configured to Send a second response to the station,
The data exchange apparatus, wherein the second response is used to notify that the primary base station cooperates with the secondary base station to serve the UE. The receiving unit is further configured to receive a service providing gateway (SGW) address information corresponding to the UE, transmitted by the MME.
The apparatus further comprises a replacement unit,
72. A data exchange apparatus according to claim 71, wherein the switching unit is configured to perform data exchange with the SGW for the UE according to address information of the SGW.   73. The data exchange apparatus according to claim 72, wherein the address information of the SGW includes a transport network layer (TNL) address of the SGW and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID).   74. The apparatus as claimed in claim 72 or 73, wherein the switching unit is configured to send to the SGW uplink data received from the UE and to send to the UE downlink data received from the SGW. Data exchange device. A data exchange device,
The device is a secondary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
Used to receive a first message sent by a primary base station or to receive relationship information between the secondary base station and the primary base station configured by an operation, management and maintenance system (OAM) Command, wherein the first message is used to notify the secondary base station to set up an S1 interface;
An instruction used to send an S1 interface setup request to the primary base station;
Instructions used to receive an S1 interface setup response sent by the primary base station;
Instructions used to perform the exchange with the primary base station using an S1 interface;
Data exchange apparatus, wherein the processor is configured to execute the application program. The first message conveys an inter-base station coordinated service identifier,
The S1 interface setup request conveys an inter-base station coordinated service identifier and / or
76. The data exchange apparatus of claim 75, wherein the S1 interface setup response conveys an inter-base station coordinated service identifier.   78. The method according to claim 75, wherein the first message is transmitted by the primary base station after the primary base station receives the relationship information between the secondary base station and the primary base station from the OAM. Data exchange device. The application program
Further comprising instructions used to receive an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) sent by the primary base station;
The instructions used to perform the exchange with the primary base station using an S1 interface
An instruction used to transmit received uplink data sent by a user equipment (UE) to the primary base station, whereby the primary base station sends uplink data to the SGW. Instruction and / or
78. Any one of claims 75 to 77 including instructions used to receive downlink data from the SGW forwarded by the primary base station and to transmit the downlink data to the UE. Data exchange device as described. The application program
Instructions used to transmit the downlink transport network layer (TNL) address of the secondary base station and the General Packet Radio Service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID) to the primary base station; Causes the primary base station to use the MME to send the downlink transport network layer (TNL) address of the secondary base station and the general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW , Instruction,
Further comprising: an SGW uplink TNL address sent by said primary base station and an instruction used to receive a GTP TEID;
The application program
76. The method of claim 75, further comprising: instructions for transmitting received uplink data sent by the UE to the SGW and used for sending received downlink data sent by the SGW to the UE. 77. A data exchange apparatus according to any one of 77. A data exchange device,
The device is a primary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
Instructions used to send a first message to a secondary base station, wherein the first message is used to notify the secondary base station to set up an S1 interface;
Instructions used to receive an S1 interface setup request sent by the secondary base station;
An instruction used to send an S1 interface setup response to the secondary base station;
Instructions used to perform the exchange with the secondary base station using the S1 interface;
Data exchange apparatus, wherein the processor is configured to execute the application program. The first message conveys an inter-base station coordinated service identifier,
The S1 interface setup request conveys an inter-base station coordinated service identifier and / or
81. The data exchange apparatus of claim 80, wherein the S1 interface setup response conveys an inter-base station coordinated service identifier. The command used to send the first message to the secondary base station is
Instructions used to receive relationship information between the secondary base station and the primary base station from an OAM;
82. A data exchange apparatus according to claim 80 or 81, comprising: an instruction used to transmit the first message to the secondary base station. The application program
The method further includes instructions used to transmit an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) to the secondary base station,
The instructions used to perform exchange with the secondary base station using the S1 interface,
Instructions used to receive uplink data sent by the secondary base station and received from a user equipment (UE);
Instructions used to send uplink data to the SGW, and / or
83. The method of claim 80, comprising instructions used to forward downlink data from the SGW to the secondary base station, whereby the secondary base station transmits the downlink data to the UE. The data exchange device according to any one of the preceding claims. The application program
An instruction used to transmit to the SGW the received downlink TNL address of the secondary base station and the received GTP TEID, transmitted by the secondary base station, using an MME;
A command used to transmit the uplink TNL address and GTP TEID of the SGW to the secondary base station, whereby the secondary base station transmits the received uplink data transmitted by the UE; 83. Data according to any one of claims 80 to 82, further comprising an instruction to transmit to the SGW, the secondary base station transmitting the received downlink data transmitted by the SGW to the UE. Exchange equipment. A data exchange device,
The device is a primary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
An instruction used to send an X2 handover request message to a secondary base station, wherein the X2 handover request message includes tunnel address information allocated by the primary base station to a user equipment (UE). Instruction and
Instructions used to receive an X2 handover request response sent by the secondary base station;
Including instructions used to perform data exchange with the secondary base station using an X2 interface;
A data exchange apparatus, wherein the processor is configured to execute an application program.   86. The apparatus of claim 85, wherein the tunnel address information comprises a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) allocated by the primary base station to the UE. Data exchange equipment. The X2 handover request message conveys an inter-base station coordinated service identifier and / or
The data exchange apparatus according to claim 85 or 86, wherein the X2 handover request response carries an inter-base station coordinated service identifier. The application program
The method further includes an instruction used to update or release the GTP tunnel associated with the X2 interface or the UE, and send an update or release message to the secondary base station, whereby the secondary base station transmits the X2 interface. 88. A data switching apparatus according to any one of claims 85 to 87, wherein the association or the general packet radio service tunneling protocol GTP of the UE is updated or released.   89. The data exchange apparatus of claim 88, wherein the update or release message conveys an inter-base station coordination service identifier and a bearer identifier. A data exchange device,
The device is a secondary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
An instruction used to receive an X2 handover request message sent by a primary base station, wherein the X2 handover request message is allocated by the primary base station to a user equipment (UE) tunnel address information Including, and
Instructions used to send an X2 handover request response to the primary base station;
Including instructions used to perform data exchange with the primary base station using an X2 interface;
A data exchange apparatus, wherein the processor is configured to execute an application program.   91. The device of claim 90, wherein the tunnel address information comprises a transport network layer (TNL) address and a generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) allocated by the primary base station to the UE. Data exchange equipment. The X2 handover request message conveys an inter-base station coordinated service identifier and / or
The data exchange apparatus according to claim 90, wherein the X2 handover request response transmits an inter-base station coordinated service identifier. The application program
91. The method according to claim 90, further comprising: receiving an update or release message sent by the primary base station, and associating the X2 interface or instructions used to update or release the General Packet Radio Services Tunneling Protocol GTP tunnel of the UE. 92. A data exchange apparatus according to any one of 92.   94. The data exchange apparatus of claim 93, wherein the update or release message conveys an inter-base station coordination service identifier and a bearer identifier. A data exchange device,
The device is a primary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
Instructions used to send a setup request of the X3 interface to the secondary base station, the X3 interface having bidirectional data communication capability;
Instructions used to receive the setup response of the X3 interface sent by the secondary base station;
Instructions used to perform two-way data exchange with the secondary base station using the X3 interface;
A data exchange apparatus, wherein the processor is configured to execute an application program. The setup request of the X3 interface conveys an inter-base station coordinated service identifier and / or
The data exchange apparatus of claim 95, wherein the setup response of the X3 interface conveys an inter-base station coordinated service identifier.   97. A data exchange apparatus according to claim 95 or 96, wherein the X3 interface comprises an S1 interface. The application program
The method further includes instructions used to transmit an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) to a secondary base station,
The instructions used to perform two-way data exchange with the secondary base station using the X3 interface,
Instructions used to receive uplink data sent by a user equipment (UE) and forwarded by the secondary base station and to send the uplink data to a serving gateway (SGW);
An instruction used to transmit downlink data transmitted by the SGW to the secondary base station, whereby the secondary base station transmits the downlink data to the UE; 98. A data exchange apparatus according to any one of claims 95 to 97, comprising. The application program
After the primary base station receives the X3 interface setup response sent by the secondary base station
Used to send the downlink transport network layer (TNL) address of the secondary base station and the generic packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID) to the SGW using a mobility management entity (MME) The instruction to be
A command used to transmit the uplink TNL address and GTP TEID of the SGW to the secondary base station, whereby the secondary base station transmits the received uplink data transmitted by the UE; 100. The data exchange apparatus according to any one of claims 95 to 97, further comprising: an instruction to transmit to the SGW and transmit received downlink data transmitted by the SGW to the UE. A data exchange device,
The device is a primary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
Instructions used to receive the setup request of the X3 interface sent by the primary base station, the X3 interface having bidirectional data communication capability;
Instructions used to send the X3 interface setup response to the primary base station;
Instructions used to perform two-way data exchange with the primary base station using the X3 interface;
A data exchange apparatus, wherein the processor is configured to execute an application program. The setup request of the X3 interface conveys an inter-base station coordinated service identifier and / or
The data exchange apparatus of claim 100, wherein the setup response of the X3 interface conveys an inter-base station coordinated service identifier.   102. A data exchange apparatus according to claim 100 or 101, wherein the X3 interface comprises an S1 interface. The application program
Further comprising instructions used to receive an internet protocol (IP) address of the primary base station and a tunnel endpoint identifier (TEID) sent by the primary base station;
The instructions used to perform two-way data exchange with the primary base station using the X3 interface,
An instruction used to transmit uplink data from a user equipment (UE) to the primary base station, whereby the primary base station transmits uplink data to a serving gateway (SGW) , Instruction,
103. A command to receive downlink data from the SGW transmitted by the primary base station and used to transmit the downlink data to the UE. Data exchange device described in. The application program
Received SGW's uplink transport network layer (TNL) address and General Packet Radio Service Tunneling Protocol Tunnel Endpoint Identifier (GTP TEID) sent by the primary base station, sent by the UE and received 103. A data exchange apparatus according to any of claims 100 to 102, further comprising: instructions used to transmit uplink data to the SGW and transmit downlink data received from the SGW to the UE. . A data exchange device,
The device is a mobility management entity (MME),
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
Instructions used to receive a first message sent by a primary base station, such that the first message cooperates with the primary base station to serve user equipment (UE) An instruction used to request the secondary base station;
An instruction used to send a second message to the secondary base station, wherein the second message instructs the secondary base station to cooperate with the primary base station to serve the UE. The instruction used to make the request,
An instruction used to receive a first response returned by the secondary base station, wherein the first response is to cooperate with the primary base station to serve the UE. An instruction to convey information that the base station has agreed;
Instructions used to send a second response to the primary base station, whereby the primary base station and the secondary base station cooperate to serve a UE ,
Data exchange apparatus, wherein the processor is configured to execute the application program. The application program
The method further includes an instruction used to notify the service providing gateway (SGW) corresponding to the UE of the address information of the secondary base station and to notify the secondary base station of the address information of the SGW, whereby the secondary The data exchange apparatus of claim 105, wherein the base station performs data exchange with the SGW for the UE. The address information of the secondary base station includes a transport network layer (TNL) address of the secondary base station and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID);
The data exchange device according to claim 106, wherein the address information of the SGW includes a TNL address of the SGW and a GTP TEID. A data exchange device,
The device is a secondary base station,
A network interface, a processor, a memory, and an application program stored in the memory;
The application program is
Instruction used to receive a second message sent by a mobility management entity (MME), wherein the second message is a secondary base to cooperate with a primary base station to serve the UE. The instruction used to request the station,
An instruction used to send a first response to the MME, wherein the first response agreed to cooperate with the primary base station to serve the UE The MME sends a second response to the primary base station, and the secondary response is used by the primary base station to serve the UE. Including an instruction used to indicate that it cooperates with the station;
A data exchange apparatus, wherein the processor is configured to execute an application program. The application program
After the secondary base station transmits the first response to the MME,
Instructions used to receive address information of a serving gateway (SGW) corresponding to the UE sent by the MME;
109. The data exchange apparatus of claim 108, further comprising: instructions used to perform data exchange with the SGW for the UE according to the address information of the SGW.   110. A data exchange apparatus according to claim 109, wherein the address information of the SGW includes a Transport Network Layer (TNL) address of the SGW and a general packet radio service tunneling protocol tunnel endpoint identifier (GTP TEID). The instructions used to perform data exchange with the SGW for the UE according to the address information of the SGW,
110. A data exchange apparatus according to claim 108 or 109, comprising: instructions used to send uplink data received from the UE to the SGW and to send downlink data received from the SGW to the UE.

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