CN102687558B - The method of local exchange and device between many base stations - Google Patents
The method of local exchange and device between many base stations Download PDFInfo
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- CN102687558B CN102687558B CN201080059706.5A CN201080059706A CN102687558B CN 102687558 B CN102687558 B CN 102687558B CN 201080059706 A CN201080059706 A CN 201080059706A CN 102687558 B CN102687558 B CN 102687558B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The present invention relates to method and the device of local exchange between many base stations.According to one embodiment of present invention, provide a kind of method realizing local exchange in a base station, wherein callee accesses described base station, said method comprising the steps of: (S113) receives the message of carrying local exchange information from gateway; (S114) based on described local exchange information, determine whether there is the available connection based on X2 interface between the base station that described base station and described calling party access; (S115) if there is the available connection based on X2 interface between the base station accessed of described base station and described calling party, then initiate to set up the connection based on X2 interface between the base station that described calling party accesses.Method in the application of the invention and device, the X2 interface that can effectively utilize between base station exchanges to realize local data and switches, save the backhaul link resource in wireless communication system in general, reduce the Internet Transmission cost communicated between user on average.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to method and the device of base station local exchange.
Background technology
In current Long Term Evolution (LongTermEvolution, LTE) network, after a certain service is successfully established, the data path of this service will by gateway (ServingGateway, SGW) node.
For some research displays of global system for mobile communications (GSM) network, in the all-calls handled by a base station controller (BSC), 30% even more calling is on average had to be local call.Can infer, the situation in LTE network is similar to the situation in GSM network.In some densely populated areas and rural area remote areas, great majority calling (caller and called) occur among same base station or one group of base station.According to existing LTE protocol, the data of two users must be exchanged by service gateway nodes, even these two users are facing to face.Therefore, local call occupies the resource of a large amount of backhaul (backhaul) link, and also makes local call need to bear high Internet Transmission expense.
Summary of the invention
In order to overcome above-mentioned defect of the prior art, the present invention proposes a kind of X2 interface that utilizes to realize method and the device of local exchange between many base stations.
According to an aspect of the present invention, provide a kind of method realizing local exchange in a base station, wherein callee accesses described base station, said method comprising the steps of: receive the message of carrying local exchange information from gateway, described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee; Based on described local exchange information, determine whether there is the available connection based on X2 interface between the base station that described base station and described calling party access; If there is the available connection based on X2 interface between the base station that described base station and described calling party access, then initiate to set up the connection based on X2 interface between the base station that described calling party accesses.
According to a further aspect of the invention, provide a kind of method realizing local exchange in a base station, wherein calling party accesses described base station, and described method comprises step: the connection establishment request for local exchange based on X2 interface receiving the base station accessed from callee; The connection establishment response for local exchange based on X2 interface is sent to the base station that described callee accesses.
According to a further aspect of the invention, provide a kind of method realizing local exchange in gateway, comprise the following steps: determine whether the base station that calling party accesses and the base station that callee accesses all access described gateway, if so, the message of carrying local exchange information is sent to the base station that described callee accesses; Described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee.
According to a further aspect of the invention, provide a kind of method realizing switching in a base station, comprise the following steps: receive the handover request had about the communication between first user equipment and the second subscriber equipment; Determine whether there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access; If there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access, then initiate to set up the connection based on X2 interface between the base station that described second subscriber equipment accesses, this connection is for carrying the communication between described first user equipment and the second subscriber equipment.
According to a further aspect of the invention, provide a kind of method realizing switching in a base station, wherein base station described in first user equipment access, said method comprising the steps of: send the handover request had about the communication between described first user equipment and the second subscriber equipment to another base station; Receive the Handover Request Acknowledge from another base station described; Stop sending the data of described first user equipment to described second subscriber equipment.
According to a further aspect of the invention, provide a kind of the first switch realizing local exchange in a base station, wherein callee accesses described base station, described first switch comprises: first receiving device, for receiving the message of carrying local exchange information from gateway, described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee; First determining device, for based on described local exchange information, determines whether there is the available connection based on X2 interface between the base station that described base station and described calling party access; First processing unit, if there is the available connection based on X2 interface between the base station accessed for described base station and described calling party, then initiates to set up the connection based on X2 interface between the base station that described calling party accesses.
According to a further aspect of the invention, provide a kind of the second switch realizing local exchange in a base station, wherein calling party accesses described base station, described second switch comprises: the second receiving system, for receiving the connection establishment request for local exchange based on X2 interface of the base station accessed from callee; First responding device, the base station for accessing to described callee sends the connection establishment response for local exchange based on X2 interface.
According to a further aspect of the invention, provide a kind of the 3rd switch realizing local exchange in gateway, comprise: the second processing unit, for: determine whether the base station that calling party accesses and the base station that callee accesses all access described gateway, if so, the message of carrying local exchange information is sent to the base station that described callee accesses; Described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee.
According to a further aspect of the invention, providing a kind of the first switching device shifter realizing switching in a base station, comprising: the 3rd receiving system, for receiving the handover request about the communication between first user equipment and the second subscriber equipment; Second determining device, for determining whether there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access; 3rd processing unit, for: if there is the available connection based on X2 interface between the base station accessed of described base station and described second subscriber equipment, then initiate to set up the connection based on X2 interface between the base station that described second subscriber equipment accesses, this connection is for carrying the communication between described first user equipment and the second subscriber equipment.
According to a further aspect of the invention, provide a kind of the second switching device shifter realizing switching in a base station, wherein base station described in first user equipment access, described second switching device shifter comprises: the first dispensing device, for sending the handover request had about the communication between described first user equipment and the second subscriber equipment to another base station; 4th receiving system, for receiving the Handover Request Acknowledge from another base station described; 4th processing unit, sends the data of described first user equipment to described second subscriber equipment for stopping.
Method in the application of the invention and device, the X2 interface that can effectively utilize between base station exchanges to realize local data and switches, save the backhaul link resource in wireless communication system in general, decrease data transfer delay, reduce the Internet Transmission cost communicated between user on average.
Accompanying drawing explanation
With reference to figure below and explanation, this system will be understood better.Element in figure is not necessarily drawn in proportion, but emphasis is for illustration of the principle of typical model.In the drawings, run through different diagrams, similar reference number represents characteristic of correspondence.
Fig. 1 shows the method flow diagram realizing local exchange in the mobile communication network according to an embodiment of the invention;
Fig. 2 show according to the present invention be an embodiment realize in the mobile communication network switch method flow diagram;
Fig. 3 show according to the present invention be an embodiment realize in the mobile communication network switch method flow diagram;
Fig. 4 shows the structural representation realizing the first switch of local exchange in a base station according to an embodiment of the invention;
Fig. 5 shows the structural representation realizing the second switch of local exchange in a base station according to an embodiment of the invention;
Fig. 6 shows the structural representation realizing the 3rd switch of local exchange in gateway according to an embodiment of the invention;
Fig. 7 shows the structural representation realizing the first switching device shifter switched in a base station according to an embodiment of the invention;
Fig. 8 shows the structural representation realizing the second switching device shifter switched in a base station according to an embodiment of the invention.
Embodiment
Without loss of generality, the following examples in the present invention are all be applied in LTE network.Those skilled in the art will be understood that core of the present invention and essence also can be applied to other mobile communications networks.
Fig. 1 shows the method flow diagram realizing local exchange in the mobile communication network according to an embodiment of the invention.As shown in the figure, the mobile communication system of this embodiment comprises: gateway 10, base station 11, base station 12, calling party's (subscriber equipment) 15, callee's (subscriber equipment) 16.Concrete scene is: base station 11 and base station 12 all Access Service Network Gateway 10, calling party 16 access base station 12, callee 15 access base station 11, calling party 16 is initiated to the communication connection of callee 15.Below describe the method flow in this embodiment in detail.
In step S101, between gateway 10, base station 12, calling party 16, carry out the transmission of Non-Access Stratum signaling message.
In step s 102, gateway 10 obtains the information of callee 15 from base station 12 and calling party 16.
In step s 103, gateway 10 carries out paging to callee 15.
In step S104, between callee 15 and base station 11, enter random access procedure.
In step S105, set up wireless heterogeneous networks (RadioResourceControl, RRC) layer between callee 15 and base station 11 and connect.Comprising: callee 15 sends radio resource control layer connection request message to base station 11; Base station 11 sends radio resource control layer connection establishment message to callee 15; Callee 15 sends radio resource control layer connection setup complete message to base station 11.
In step s 106, base station 11 sends initialising subscriber information to gateway 10.
Those skilled in the art will be understood that after step s 106, and gateway 10 obtains the information of the base station 11 of callee 15 and access thereof, and alternatively, gateway 10 preserves these information by this communication process between calling party 16 and callee 15.
In step s 107, the transmission of Non-Access Stratum signaling message is carried out between gateway 10, base station 11, callee 15.
In step S108, gateway 10 sends initial environment and sets up request (initialcontextsetuprequest) message to base station 11.
In step S109, carry out radio resource control layer between callee 15 and base station 11 and connect reprovision.Comprising: base station 11 sends radio resource control layer to callee 15 and connects reallocation message; Callee 15 sends radio resource control layer connection reprovision and completes message to base station 11.
In step s 110, the transmission of Non-Access Stratum signaling message is carried out between gateway 10, base station 11, callee 15.
In step S111, base station 11 sends initial environment to gateway 10 and sets up response (initialcontextsetupresponse) message.
Alternatively, above-mentioned steps S101 to step S111 can be consistent with existing LTE protocol specification, to improve the compatibility of technical scheme in the present invention.
The base station 12 that the base station 11 that following steps access primarily of gateway 10, callee 15, calling party 16 access performs respectively, to realize the local exchange of communication between calling party 16 and callee 15.
In step S112, whether all gateway 10 will determine base station 11 Access Service Network Gateway 10 that base station 12 that calling party 16 accesses and callee 15 access; If so, then in step S113, the base station 11 accessed to callee 15 is sent the message of carrying local exchange information by gateway 10; Wherein, local exchange information comprises: the mark (E-RABID) of the RAB of the enhancing corresponding to caller-marking, calling party and callee.
Usually, access the base station of same gateway in network topology structure, even neighbours each other each other in actual distribution, thus between these base stations, there is the connection of setting up based on X2 interface with the possibility intercomed mutually.Therefore, when gateway 10 determines base station 11 and base station 12 all Access Service Network Gateway 10, then can send above-mentioned message of carrying local exchange information, to attempt the connection based on X2 interface of setting up between base station 11 and base station 12, for carrying the communication between calling party 16 and callee 15.If calling party and callee access same base station, then this base station directly can exchange data each other.If calling party and callee access different base stations, then carrying in the message of local exchange information that gateway 10 sends also comprises: the mark of the base station that calling party accesses.If base station 11 and base station 12 not equal Access Service Network Gateway 10, then still can adopt scheme of the prior art, exchange data between calling party 16 and callee 15 by gateway 10 as intermediate node.
Particularly, in one embodiment of the invention, above-mentioned message of carrying local exchange information is set up request (E-RABSETUPREQUEST) message by the enhancing RAB through amendment and is realized, and its particular content is defined as follows shown in table:
Wherein, LocalSwitchingUEInfo and LocalSwitchingE-RABInfo is the field newly increased; Wherein, GlobaleNBID represents the mark of the base station that calling party accesses, and eNBUES1APID represents the mark of calling party on above-mentioned GlobaleNBID; E-RABID represents and can carry out the relevant enhancing RAB of the calling party of local exchange with the enhancing RAB of callee.All the other fields can be consistent with existing LTE protocol specification, to improve the compatibility of this message.
In step S113, the message of carrying local exchange information that the base station 11 that callee 15 accesses will receive from gateway 10; Described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee.As previously mentioned, carry in the message of local exchange information and also may comprise: the mark of the base station that calling party accesses.
In step S114, base station 11 based on described local exchange information, will determine whether there is the available connection based on X2 interface between the base station 12 that self (base station 11) and calling party 16 access.
If there is the available connection based on X2 interface between base station 11 and base station 12, then next perform following steps.
In step sl 15, carry out radio resource control layer between callee 15 and base station 11 and connect reprovision, comprising: base station 11 sends radio resource control layer to callee 15 and connects reprovision (RRCConnectionReconfiguration) message, then sends radio resource control layer connection reprovision by callee 15 to base station 11 and completes (RRCConnectionReconfigurationComplete) message.Alternatively, these two message can be consistent with existing LTE protocol specification, to improve the compatibility of scheme in the present invention.
In step S1151, being connected based on X2 interface between the base station 12 accessed with calling party 16 will be initiated to set up in base station 11.
Particularly, in one embodiment of the invention, step S1151 sends local exchange foundation request (X2AP:LocalSwitchingSETUPREQ) message by X2 interface to base station 12 by base station 11 and realizes, and this message particular content is defined as follows shown in table:
Wherein, eNBUEX2APID represents the X2 application protocol identification of callee; LocalSwitchingeNBUES1APID represents the S1 mark of calling party in the base station that it accesses; E-RABtobeLocalSwitchingList represents that the hope of callee carries out the relevant enhancing RAB of local data exchange by X2 interface; E-RABID represents and can carry out the relevant enhancing RAB of the callee of local exchange with the enhancing RAB of calling party; GTPTunnelEndpoint represents GTP (GPRStunnelingprotocol) end points of X2 transmission bearer, for transmitting the protocol Data Unit (PDU) of local exchange; LocalSwitchingE-RABID represents the mark of the relevant enhancing RAB of calling party.
After the connection establishment request for local exchange based on X2 interface receiving the base station 11 accessed from callee 15, in step S1152, the connection establishment response being used for local exchange that the base station 12 that calling party 16 accesses will send to base station 11 based on X2 interface.
Particularly, in one embodiment of the invention, step S1152 sends local exchange foundation response (X2AP:LocalSwitchingSETUPRSP) message by X2 interface to base station 11 by base station 12 and realizes, and this message particular content is defined as follows shown in table:
Wherein, eNBUEX2APID represents the X2 application protocol identification of calling party; RequiringeNBUEX2APID represents the X2 application protocol identification of callee; E-RABsuccessfullytobeLocalSwitchingList represents that successfully passing through X2 connects the relevant enhancing RAB that the enhancing RAB relevant with callee carries out the calling party of local data exchange; E-RABID represents and can carry out the relevant enhancing RAB of the calling party of local exchange with the enhancing RAB of callee; GTPTunnelEndpoint represents the GTP end points of X2 transmission bearer; E-RABfailedtobeLocalSwitchingList represents that connecting the enhancing RAB relevant with callee by X2 carries out the relevant enhancing RAB that local data exchanges the calling party failed.
Alternatively, in some embodiments of the invention, also comprise a step S116, the base station 11 accessed by callee 15 sends message to gateway 10, this message carries the instruction whether be successfully established about the connection based on X2 interface, and this connection is for carrying the communication between calling party 16 and callee 15.This message can be set up response (E-RABSETUPRESPONSE) message and realize by the enhancing RAB through amendment; Particularly, an increase Optional Field LocalSwitchingSetupSuccessFlag in response message can be set up at existing enhancing RAB; If all there is not this field in all enhancing RAB set up items (E-RABSetupItem), mean that local exchange function is not supported in this base station; If the value of this field is false, mean that this base station is that relevant enhancing RAB sets up the failure of local exchange data path; If the value of this field is true, mean that local exchange data path is successfully set up for relevant enhancing RAB in this base station.
Next, if the above-mentioned success of the connection establishment based on X2 interface for carrying the communication between calling party 16 and callee 15, then base station 11 and base station 12 send the data of communication between callee 15 and calling party 16 mutually by this connection.
Alternatively, in above-mentioned flow process, even if base station instruction local exchange data path is successfully established, gateway 10 still retains the user level information of the relevant enhancing RAB distributing to calling party 16 and callee 15.Then for gateway 10, the data path between calling party 16 and gateway 10 and the data path between callee 15 and gateway 10 remain effective.Base station is then for calling party 16 and callee 15 retain the user plane information of gateway respectively.Therefore, between calling party 16 and callee 15 in communication process, the local exchange data path based on X2 interface can be stopped at any time, then adopt undertaken exchanging by gateway 10, based on the data path of S1 interface.
When one of subscriber equipment 15 and subscriber equipment 16 switch, the local exchange data path based on X2 interface may be affected.
When there is the handover in base station, the local exchange data path based on X2 interface originally still can remain unchanged.
When there is the handover across base station, the local exchange data path based on X2 interface originally will stop.
Fig. 2 shows the method flow diagram realizing switching in the mobile communication network according to an embodiment of the invention.As shown in the figure, the mobile communication system of this embodiment comprises: gateway 20, base station 21, base station 22, base station 23, subscriber equipment 25, subscriber equipment 26.Concrete scene is: the equal Access Service Network Gateway 20 in base station 21,22,23, and first user equipment 25 intercoms mutually with the second subscriber equipment 26, the second subscriber equipment 26 access base station 21, and the access of first user equipment 25 is just preparing to be switched to base station 23 from base station 22.Below describe the method flow in this embodiment in detail.
In step s 201, subscriber equipment 25 sends measurement report to base station 22.
According to measurement report and the instruction from core net (such as carrying out gateway 20), base station 22 is known: will take over by base station 23 access service that self (base station 22) provides subscriber equipment 25.
In step S202, the base station 22 that first user equipment 25 accesses will send the handover request had about the communication between subscriber equipment 25 and subscriber equipment 26 to base station 23.
Particularly, in one embodiment of the invention, the handover request message that step S202 is sent based on S1 interface to gateway 20 by base station 22 realizes.Gateway 20 will be transmitted to base station 23 this handover request.
Particularly, in another embodiment of the present invention, there is X2 interface between base station 22 and base station 23 to connect, by X2 interface, to base station 23, handover request (X2AP:HANDOVERREQUEST) message sent through amendment realizes in the base station 22 that step S202 is accessed by first user equipment 25, and this message particular content is defined as follows:
Wherein, GlobaleNBID represents the base station that the other side of communication accesses, that is the second subscriber equipment 26 access base station 21, mark; ENBUEX2APID represents the other side of communication, that is the X2 application protocol identification of the second subscriber equipment 26 on above-mentioned GlobaleNBID; LocalSwitchingE-RABID represents and can carry out the relevant enhancing RAB of the other side's (the second subscriber equipment 26) of local exchange with the enhancing RAB of we's (first user equipment 25); These three fields are new field.All the other fields can be consistent with existing LTE protocol specification, to improve the compatibility of this message.
In step S203, base station 23 will receive the message of the handover request had about the communication between first user equipment 25 and the second subscriber equipment 26.As previously mentioned, in different embodiments of the invention, this handover request message can based on X2 interface or based on S1 interface.
In step S204, base station 23 will determine whether there is the connection of available machine based on X2 interface between the base station 21 that himself and the second subscriber equipment 26 access.Alternatively, some GTP endpoint resources also will be distributed in base station 23: one of them is based on X2 interface, for base station 22 forwarding data; Wherein another is for the traditional exchanges data path based on S1 interface; Wherein another is based on X2 interface, for the local exchange data path between base station 21 and base station 23.
If there is the available connection based on X2 interface between base station 23 and base station 22, then next perform following steps.
In step S205, being connected based on X2 interface between the base station 21 that initiation foundation and the second subscriber equipment 26 access by base station 23, this connection is for carrying the communication between first user equipment 25 and the second subscriber equipment 26.
Particularly, step S205 sends local exchange handover request (X2AP:LocalSwitchingHOREQ) message by X2 interface to base station 21 by base station 23 and realizes, and this message particular content is defined as follows shown in table:
Wherein, eNBUEX2APID represents the X2 application protocol identification of first user equipment 25; LocalSwitchingeNBUEX2APID represents the X2 application protocol identification of first user equipment 26 in the base station 21 that it accesses, this field can be replaced by LocalSwitchingeNBUES1APID field, and this depends on that the handover request message in step S202 is based on X2 interface or S1 interface; E-RABtobeLocalSwitchingList represents that the hope of first user equipment 25 carries out the relevant enhancing RAB of local data exchange by X2 interface; E-RABID represents and can carry out the relevant enhancing RAB of the first user equipment 25 of local exchange with the enhancing RAB of the second subscriber equipment 26; GTPTunnelEndpoint represents the GTP end points of X2 transmission bearer, for transmitting the protocol Data Unit of local exchange; LocalSwitchingE-RABID represents the mark of the relevant enhancing RAB of the second subscriber equipment 26.
In step S206, the base station 21 that the second subscriber equipment 26 accesses will stop the data sending the second subscriber equipment 26 to first user equipment 25 to base station 22, and the resource based on X2 interface of distributing between base station 21 and base station 23 is for local exchange.
In step S207, the foundation that response base station 23 is initiated connects based on X2 interface by base station 21.
Particularly, step S207 sends local exchange handoff response (X2AP:LocalSwitchingHORSP) message by X2 interface to base station 23 by base station 21 and realizes, and this message particular content is defined as follows shown in table:
Wherein, eNBUEX2APID represents the X2 application protocol identification of the second subscriber equipment 26; RequiringeNBUEX2APID represents the X2 application protocol identification of first user equipment 25; E-RABsuccessfullytobeLocalSwitchingList represents that successfully passing through X2 connects the relevant enhancing RAB that the enhancing RAB relevant with first user equipment 25 carries out the second subscriber equipment 26 of local data exchange; E-RABID represents the relevant enhancing RAB that can carry out the second subscriber equipment 26 of local exchange with the enhancing RAB of first user equipment 25; GTPTunnelEndpoint represents the GTP end points of X2 transmission bearer; E-RABfailedtobeLocalSwitchingList represents that connecting the enhancing RAB relevant with first user equipment 25 by X2 carries out the relevant enhancing RAB that local data exchanges the second subscriber equipment 26 failed.
Those skilled in the art will be understood that, if the handover request message in step S202 is based on S1 interface, it is consistent that the local exchange handover request message in step S205 and the local exchange switching response message in step S207 can set up response message with the local interaction set up in request message and step S1152 of the local exchange in step S1151 in previous embodiment in terms of content respectively.
In step S208, data that the base station 21 that the second subscriber equipment 26 accesses will send to base station 23 (the second subscriber equipment 26 to first user equipment 25).
In step S209, base station 23 will send Handover Request Acknowledge (HANDOVERREQUESTACKNOWLEDGE) message to base station 22.
Particularly, as in aforementioned one embodiment of the present of invention, the handover request message in step S202 is based on S1 interface; Then correspondingly, switching request acknowledgement message based on S1 interface is sent by base station 23 to gateway 20 in step S209.Gateway 20 will be transmitted to base station 22 this Handover Request Acknowledge.
Particularly, as in aforementioned an alternative embodiment of the invention, the handover request message in step S202 is based on X2 interface; Then correspondingly, to send the switching request acknowledgement message based on X2 interface to base station 22 by base station 23 in step S209, this message particular content is defined as follows shown in table:
Wherein, LocalSwitchingSetupSuccessFlag is newly-increased Optional Field, as the instruction whether connection based on X2 interface between the base station 21 accessed about base station 23 and the second subscriber equipment 26 is successfully established; If admit all there is not this field in project (E-RABAdmittedItem) at all enhancing RABs, mean that local exchange function is not supported in this base station; If the value of this field is false, mean that this base station is that relevant enhancing RAB sets up the failure of local exchange data path; If the value of this field is true, mean that local exchange data path is successfully set up for relevant enhancing RAB in this base station.All the other fields can be consistent with existing LTE protocol specification, to improve the compatibility of this message.
After receiving the switching confirmation request message from base station 23, base station 21 will stop the data sending first user equipment 25 to the second subscriber equipment 26 in step S210.
In step S211, radio resource control layer will be carried out between the base station 22 that first user equipment 25 and its priority access, base station 23 and connect reprovision and data retransmission.Comprising: base station 22 sends radio resource control layer to first user equipment 25 and connects reprovision (RRCConnectionReconfiguration) message; The serial-number-state that base station 22 sends to base station 23 based on X2 interface transmits (SNStatusTransfer) message; Base station 22 forwards the data cushioned because of handover operation to base station 23; First user equipment 25 sends radio resource control layer connection reprovision and completes (RRCConnectionReconfigurationComplete) message to base station 23.
In step S212, base station 23 will exchange request (PATHSWITCHREQUEST) message to gateway 20 transmit path.Those skilled in the art will be understood that this message is based on S1 interface.
So far, the access service of first user equipment 25 is switched to base station 23 from base station 22 and is accomplished, and the data communication between first user equipment 25 and the second subscriber equipment 26 is by still realizing local exchange based on the connection of X2 interface between base station 21 and base station 23.
Fig. 3 shows the method flow diagram realizing switching in the mobile communication network according to an embodiment of the invention.As shown in the figure, the mobile communication system of this embodiment comprises: gateway 30, base station 31, base station 32, base station 33, subscriber equipment 35, subscriber equipment 36.Concrete scene is: the equal Access Service Network Gateway 30 in base station 31,32,33, first user equipment 35 and the second subscriber equipment 36 are intercomed mutually by the X2 interface connection between base station 31 and base station 32, second subscriber equipment 36 access base station 31, the access of first user equipment 35 is just preparing to be switched to base station 33 from base station 32, and there is not the connection based on X2 interface between base station 31 and base station 33.Below describe the method flow in this embodiment in detail.
In step S301, base station 32 receives the measurement report from first user equipment 35, and determining provides the access service of subscriber equipment 35 by being taken over self (base station 32) by base station 33.
In step s 302, base station 32 sends the handover request message had about the communication between subscriber equipment 35 and subscriber equipment 36 to base station 33.
In step S303, base station 33 sends switching request acknowledgement message to base station 32.
Between base station 32 and base station 33, there is the connection based on X2 interface, then handover request message and switching request acknowledgement message can based on X2 interface.
In step s 304, base station 32 will stop the data sending first user equipment 35 to the second subscriber equipment 36 to base station 31, and buffering is based on the data of X2 interface, is ready to receive data from gateway 30.
In step S305, base station 32 will send radio resource control layer to first user equipment 35 and connect reallocation message.
In step S306, base station 32 switches instruction (LocalSwitchingHOIndication) message by sending a local exchange based on X2 interface to base station 31.
In step S307, base station 31 will stop the data sending the second subscriber equipment 36 to first user equipment 35 to base station 32, then such data are sent to gateway 30.Meanwhile, base station 31 also will send the GDP data of carrying cut-off mark (EndMarker) to base station 32, for indicating last packet through sending based on the connection of X2 interface to base station 32.After base station 32 receives cut-off mark, mean to be receive the data from base station 31 from this based on X2 interface again.
In step S308, base station 32 stops the data of buffering based on X2 interface after receiving cut-off mark.
Afterwards, the data of the second subscriber equipment 36 to first user equipment 35 will be transmitted to base station 32 by gateway 30.
In step S309, base station 32 receives the data from gateway 30 and cushions these data.
In step S310, the serial-number-state sent to base station 33 based on X2 interface is transmitted (SNStatusTransfer) message by base station 32.Meanwhile, base station 32 is by (the second subscriber equipment 36 to the first user equipment 35) data to base station 33 intransit buffering.
In step S311, first user equipment 35 will send radio resource control layer connection reprovision and complete (RRCConnectionReconfigurationComplete) message to base station 33.
In step S312, base station 33 will exchange request (PATHSWITCHREQUEST) message to gateway 30 transmit path.Those skilled in the art will be understood that this message is based on S1 interface.
So far, the access service of first user equipment 35 is switched to base station 33 from base station 32 and is accomplished, and the data communication between first user equipment 35 and the second subscriber equipment 36 is passed through gateway 30, realized exchanging based on the connection of traditional S1 interface.
In above-mentioned flow process, the local exchange switch indicating information only in steps in S306 is newly-increasedly added on X2 interface.
Fig. 4 shows the structural representation realizing the first switch of local exchange in a base station according to an embodiment of the invention.As shown in the figure, the first switch 100 comprises: first receiving device 101, first determining device 102, first processing unit 103.First switch 100 be typically arranged at embodiment illustrated in fig. 1 in the base station 11 accessed of callee 15 in.
First receiving device 101 is for receiving the message of carrying local exchange information from gateway, and described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee.
First determining device 102, for based on described local exchange information, determines whether there is the available connection based on X2 interface between the base station that described base station and described calling party access.
If there is the available connection based on X2 interface between the base station that the first processing unit 103 accesses for described base station and described calling party, then initiate to set up the connection based on X2 interface between the base station that described calling party accesses.
In conjunction with embodiment illustrated in fig. 1, first receiving device 101 is for completing steps S113, and the first determining device 102 is for performing step S114, and the first processing unit 103 is for performing step S1151.
Fig. 5 shows the structural representation realizing the second switch of local exchange in a base station according to an embodiment of the invention.As shown in the figure, the second switch 200 comprises: the second receiving system 201, first responding device 202.Second switch 200 be typically arranged at embodiment illustrated in fig. 1 in the base station 12 accessed of calling party 16 in.
Second receiving system 201 is for receiving the connection establishment request for local exchange based on X2 interface of the base station accessed from callee.
First responding device 202 sends the connection establishment response for local exchange based on X2 interface for the base station accessed to described callee.
In conjunction with embodiment illustrated in fig. 1, the second receiving system 201 is for completing steps S1151, and the first responding device 202 is for performing step S1152.
Fig. 6 shows the structural representation realizing the 3rd switch of local exchange in gateway according to an embodiment of the invention.As shown in the figure, the 3rd switch 300 comprises the second processing unit 301.3rd switch 300 be typically arranged at embodiment illustrated in fig. 1 in gateway 10 in.
Second processing unit 301 for: determine whether the base station that calling party accesses and the base station that callee accesses all access described gateway, if so, send the message of carrying local exchange information to base station that described callee accesses; Described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee.
In conjunction with embodiment illustrated in fig. 1, the 3rd switch 300 is for completing steps S112 and step S113.
Fig. 7 shows the structural representation realizing the first switching device shifter switched in a base station according to an embodiment of the invention.As shown in the figure, the first switching device shifter 400 comprises: the 3rd receiving system 401, second determining device 402, the 3rd processing unit 403.First switching device shifter 400 be typically arranged at embodiment illustrated in fig. 2 in base station 23 in.
3rd receiving system 401 is for receiving the handover request about the communication between first user equipment and the second subscriber equipment.
Second determining device 402 is for determining whether there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access.
3rd processing unit 403 for: if there is the available connection based on X2 interface between the base station accessed of described base station and described second subscriber equipment, then initiate to set up the connection based on X2 interface between the base station that described second subscriber equipment accesses, this connection is for carrying the communication between described first user equipment and the second subscriber equipment.
In conjunction with embodiment illustrated in fig. 2, the 3rd receiving system 401 is for realizing step S203, and the second determining device 402 is for performing step S204, and the 3rd processing unit 403 is for performing step S205.
Fig. 8 shows the structural representation realizing the second switching device shifter switched in a base station according to an embodiment of the invention.As shown in the figure, the second switching device shifter 500 comprises: the first dispensing device 501, the 4th receiving system 502, the 4th processing unit 503.Second switching device shifter 500 is typically arranged in the base station 22 that middle first user equipment 25 embodiment illustrated in fig. 2 accesses.
First dispensing device 501 is for sending the handover request had about the communication between described first user equipment and the second subscriber equipment to another base station.
4th receiving system 502 is for receiving the Handover Request Acknowledge from another base station described.
4th processing unit 503 sends the data of described first user equipment to described second subscriber equipment for stopping.
In conjunction with embodiment illustrated in fig. 2, the first dispensing device 501 is for performing step S202, and the 4th receiving system 502 is for completing steps S209, and the 4th processing unit 503 is for performing step S210.
Device alleged in the present invention, can be realized by software function module, also can be realized by hardware module, can also be realized by the combination of software and hardware.
Those skilled in the art will be understood that above-described embodiment is all exemplary and nonrestrictive.The different technologies feature occurred in different embodiments can combine, to obtain beneficial effect.Those skilled in the art research accompanying drawing, specification and claims basis on, will be understood that and realizes disclosed embodiment other change embodiments.In detail in the claims, term " comprises " and does not get rid of other devices or step; Indefinite article " one " is not got rid of multiple; Term " first ", " second " are for indicating title but not for representing any specific order.Any Reference numeral in claim all should not be understood to the restriction to protection range.The function of the multiple parts occurred in claim can be realized by an independent hardware or software module.Some technical characteristic to appear in different dependent claims and not to mean that and these technical characteristics can not be carried out combining to obtain beneficial effect.
Claims (13)
1. realize a method for local exchange in a base station, wherein callee accesses described base station, said method comprising the steps of:
Receive the message of carrying local exchange information from gateway; Described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee;
Based on described local exchange information, determine whether there is the available connection based on X2 interface between the base station that described base station and described calling party access;
If there is the available connection based on X2 interface between the base station that described base station and described calling party access, then initiate to set up the connection based on X2 interface between the base station that described calling party accesses.
2. method according to claim 1, is characterized in that, also comprises step:
If the described success of the connection establishment based on X2 interface, sends the data of described callee to described calling party by the described connection based on X2 interface.
3. method according to claim 1 and 2, is characterized in that, also comprises step:
Send message to described gateway, this message carries the instruction whether be successfully established about the described connection based on X2 interface.
4. realize a method for local exchange in a base station, wherein calling party accesses described base station, and described method comprises step:
Receive the connection establishment request for local exchange based on X2 interface of the base station accessed from callee;
The connection establishment response for local exchange based on X2 interface is sent to the base station that described callee accesses.
5. realize the method switched in a base station, comprise the following steps:
Receive the handover request had about the communication between first user equipment and the second subscriber equipment;
Determine whether there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access;
If there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access, then initiate to set up the connection based on X2 interface between the base station that described second subscriber equipment accesses, this connection is for carrying the communication between described first user equipment and the second subscriber equipment.
6. method according to claim 5, is characterized in that, also comprises step:
If the described success of the connection establishment based on X2 interface, sends the data of described first user equipment to described second subscriber equipment by the described connection based on X2 interface.
7. the method according to claim 5 or 6, is characterized in that,
Described handover request is based on X2 interface or S1 interface;
Described method also comprises step:
Send Handover Request Acknowledge to the base station that described first user equipment accesses, this Handover Request Acknowledge carries the instruction whether be successfully established about the described connection based on X2 interface.
8. realize the method switched in a base station, wherein base station described in first user equipment access, said method comprising the steps of:
Send the local exchange handover request had about the communication between described first user equipment and the second subscriber equipment to another base station, described local exchange handover request at least comprises the mark of the RAB of the enhancing corresponding to described second subscriber equipment;
Receive the local exchange Handover Request Acknowledge from another base station described;
Stop sending the data of described first user equipment to described second subscriber equipment.
9. method according to claim 8, is characterized in that, described Handover Request Acknowledge carries the instruction whether connection based on X2 interface between the base station accessed about another base station described and described second subscriber equipment is successfully established.
10. realize first switch of local exchange in a base station, wherein callee accesses described base station, and described first switch comprises:
First receiving device, for receiving the message of carrying local exchange information from gateway; Described local exchange information comprises: the mark of the RAB of the enhancing corresponding to caller-marking, calling party and callee;
First determining device, for based on described local exchange information, determines whether there is the available connection based on X2 interface between the base station that described base station and described calling party access;
First processing unit, if there is the available connection based on X2 interface between the base station accessed for described base station and described calling party, then initiates to set up the connection based on X2 interface between the base station that described calling party accesses.
11. 1 kinds of second switches realizing local exchange in a base station, wherein calling party accesses described base station, and described second switch comprises:
Second receiving system, for receiving the connection establishment request for local exchange based on X2 interface of the base station accessed from callee;
First responding device, the base station for accessing to described callee sends the connection establishment response for local exchange based on X2 interface.
12. 1 kinds realize the first switching device shifter switched in a base station, comprising:
3rd receiving system, for receiving the handover request about the communication between first user equipment and the second subscriber equipment;
Second determining device, for determining whether there is the available connection based on X2 interface between the base station that described base station and described second subscriber equipment access;
3rd processing unit, for: if there is the available connection based on X2 interface between the base station accessed of described base station and described second subscriber equipment, then initiate to set up the connection based on X2 interface between the base station that described second subscriber equipment accesses, this connection is for carrying the communication between described first user equipment and the second subscriber equipment.
13. 1 kinds realize the second switching device shifter switched, wherein base station described in first user equipment access in a base station, and described second switching device shifter comprises:
First dispensing device, for sending the local exchange handover request had about the communication between described first user equipment and the second subscriber equipment to another base station, described local exchange handover request at least comprises the mark of the RAB of the enhancing corresponding to described second subscriber equipment;
4th receiving system, for receiving the local exchange Handover Request Acknowledge from another base station described;
4th processing unit, sends the data of described first user equipment to described second subscriber equipment for stopping.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2010/071163 WO2011113210A1 (en) | 2010-03-19 | 2010-03-19 | Method and device for local switching among multiple base stations |
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| CN102687558A CN102687558A (en) | 2012-09-19 |
| CN102687558B true CN102687558B (en) | 2016-01-20 |
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| CN103220815B (en) * | 2012-01-18 | 2019-02-15 | 中兴通讯股份有限公司 | Method and device for establishing interface connection between base stations |
| CN103491584A (en) * | 2012-06-12 | 2014-01-01 | 中兴通讯股份有限公司 | Method for achieving local intercommunication and network cell equipment |
| CN103228016B (en) * | 2013-05-02 | 2015-10-21 | 中国联合网络通信集团有限公司 | Based on the data processing method of cell merge, equipment and system |
| CN105264962B (en) * | 2014-05-08 | 2019-06-28 | 华为技术有限公司 | A kind of method and relevant device of ip voice exchange |
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| CN101159905A (en) * | 2007-11-07 | 2008-04-09 | 华为技术有限公司 | Local exchange method, core network equipment and network system of implementing in base station controller |
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| WO2011113210A1 (en) | 2011-09-22 |
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