CN105264962B

CN105264962B - A kind of method and relevant device of ip voice exchange

Info

Publication number: CN105264962B
Application number: CN201480020973.XA
Authority: CN
Inventors: 刘海; 崇卫微
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-05-08
Filing date: 2014-05-08
Publication date: 2019-06-28
Anticipated expiration: 2034-05-08
Also published as: WO2015168890A1; CN105264962A

Abstract

The embodiment of the present invention discloses the method and relevant device of a kind of ip voice exchange, which comprises obtains the first global id information or the second global id information；When getting the first global id information, the base station where the described first global id information to called terminal and gateway are sent, so that the base station and gateway where the called terminal are carrying out local exchange to the calling terminal and the called terminal according to the described first global id information；When getting the second global id information, the base station where notifying the calling terminal or the called terminal according to the described second global id information carries out local exchange to the calling terminal and the called terminal.Using the present invention, path redundancy phenomenon existing for VOIP in mobile network can solve, to reduce network flow and network investment.

Description

A kind of method and relevant device of ip voice exchange

Technical field

A kind of method and relevant device exchanged the present invention relates to field of communication technology more particularly to ip voice.

Background technique

VOIP (Voice over Internet Protocol, ip voice) be by IP (Internet Protocol, Network protocol) network transmits the mode of voice.Pass through SIP (Session Initiation Protocol, meeting between terminal Talk about initiation protocol) signaling negotiation VOIP user plane information, and VOIP phone can be carried out after the negotiation, wherein user face letter Breath may include: IP address port, encoding and decoding speech etc..

In the prior art, if two users are mobile subscribers, they are complete when carrying out VOIP phone Switching path can be with are as follows: calling terminal successively passes through base station, gateway and the packet switch gateway where calling terminal, then Successively by packet switch gateway, gateway and the base station where called terminal, called terminal is finally reached.Although when two User terminal is all when on the same base station or the same gateway, and when carrying out VOIP phone, there is still a need in experience for they The complete switching path stated increases network flow and network investment at this point, necessarily resulting in path redundancy.

Summary of the invention

The embodiment of the present invention provides the method and relevant device of a kind of ip voice exchange, can solve in mobile network Path redundancy phenomenon existing for VOIP, to reduce network flow and network investment.

First aspect present invention provides a kind of method of ip voice exchange, comprising:

Obtain the first global id information or the second global id information；

When getting the first global id information, send base station where the described first global id information to called terminal and Gateway so that base station and gateway where the called terminal according to the described first global id information judge with When the relationship between base station and gateway where calling terminal meets local exchange condition, to the calling terminal and described Called terminal carries out local exchange；

When getting the second global id information, the calling terminal or described is notified according to the described second global id information Base station where called terminal carries out local exchange to the calling terminal and the called terminal.

It is in the first possible implementation, described to obtain the first global id information or the second global id information, comprising:

Base station and place service network where notification strategy and charging rule functions unit (PCRF) entity report calling terminal The Global ID of pass, and using the Global ID of base station where the calling terminal received and place gateway as first overall situation Id information；Alternatively,

The Global ID and called terminal institute of base station and place gateway where notice PCRF entity reports calling terminal Global ID in base station and place gateway, and by base station where the calling terminal received and place gateway The Global ID of base station and place gateway where Global ID and called terminal is as the second global id information.

With reference to first aspect or the first possible implementation of first aspect, in second of possible implementation In,

The local exchange condition for where the calling terminal base station and gateway with the called terminal institute Base station it is identical with gateway；Alternatively,

The local exchange condition is the base station where the calling terminal and between base station where the called terminal With network communications capability.

With reference to first aspect or second of the first possible implementation of first aspect or first aspect may Implementation, in the third possible implementation, the described first global id information that sends is to called terminal place Base station and gateway, comprising:

Local exchange request is created, and the described first global id information is added to the local exchange and is requested；

Send local exchange request to where the called terminal base station and gateway.

With reference to first aspect or second of the first possible implementation of first aspect or first aspect may Implementation or first aspect the third possible implementation, in the fourth possible implementation, the basis The second global id information notifies the base station where the calling terminal or the called terminal to the calling terminal and institute It states called terminal and carries out local exchange, comprising:

Judged base station where the calling terminal and gateway whether and institute according to the described second global id information Base station where stating called terminal is identical with gateway；

If being judged as identical, notify the identical base station where the calling terminal and the called terminal to the master Terminal and the called terminal is made to carry out local exchange；

If being judged as different, the base station where the calling terminal and the base where the called terminal are further judged Whether there is network communications capability between standing；

If the base station being judged as where notifying the calling terminal or the called terminal with network communications capability with Local exchange channel is established in opposite end base station, so that the base station where the calling terminal or the called terminal passes through the local Interchange channel carries out local exchange to the calling terminal and the called terminal.

With reference to first aspect or second of the first possible implementation of first aspect or first aspect may Implementation or first aspect the third possible implementation or first aspect the 4th kind of possible implementation, In a fifth possible implementation, further includes:

Send the address conversion relationship of the calling terminal or the called terminal on network address translation (NAT) gateway Base station to where the calling terminal or the called terminal, in order to the calling terminal and called terminal progress Local exchange.

With reference to first aspect or second of the first possible implementation of first aspect or first aspect may Implementation or first aspect the third possible implementation or first aspect the 4th kind of possible implementation, Or the 5th kind of possible implementation of first aspect, in a sixth possible implementation, further includes:

When requiring supplementation with business or Lawful Interception, the base station where notifying the calling terminal or the called terminal is stopped Local exchange only is carried out to the calling terminal and the called terminal.

Second aspect of the present invention provides a kind of method of ip voice exchange, comprising:

It receives the exchange control device is sent first global id information or exchange judging result, the exchange judging result is Judged by the exchange control device according to the second global id information；

When receiving the described first global id information, according to the described first global id information to the calling terminal and institute It states called terminal and carries out local exchange；

When receiving the exchange judging result, according to the exchange judging result to the calling terminal and the quilt Terminal is made to carry out local exchange.

In the first possible implementation,

First Global ID information includes the Global ID of base station and place gateway where calling terminal；

Second Global ID information includes the Global ID of base station where calling terminal and place gateway and is called The Global ID of base station and place gateway where terminal.

In conjunction with the first possible implementation of second aspect, in the second possible implementation, the basis Described first global id information carries out local exchange to the calling terminal and the called terminal, comprising:

Judged according to the described first global id information base station where the calling terminal and gateway whether and this Ground base station is identical with Home serving gateway；

If being judged as identical, local exchange is carried out to the calling terminal and the called terminal；

If being judged as different, further judge the base station where the calling terminal and between the home base stations whether With network communications capability；

If being judged as with network communications capability, local exchange channel is established with the base station where the calling terminal, To carry out local exchange to the calling terminal and the called terminal by the local exchange channel.

In conjunction with the first possible implementation of second aspect or second of possible implementation of second aspect, In the third possible implementation, it is described according to the exchange judging result to the calling terminal and the called terminal Carry out local exchange, comprising:

When the exchange judging result received be the calling terminal where base station and gateway with it is described When base station where called terminal is identical with gateway, local exchange is carried out to the calling terminal and the called terminal；

Where base station and the called terminal where the exchange judging result received is the calling terminal Base station between have network communications capability when, local exchange channel is established with the base station where the calling terminal, to pass through The local exchange channel carries out local exchange to the calling terminal and the called terminal.

Second in conjunction with the possible implementation of the first of second aspect or second aspect or second aspect may Implementation or second aspect the third possible implementation, in the fourth possible implementation, further includes:

The calling terminal or the called terminal for receiving the exchange control device transmission are in network address translation (NAT) the address conversion relationship on gateway, in order to carry out local exchange to the calling terminal and the called terminal；Or Person,

The address conversion relationship of the calling terminal or the called terminal in NAT gateway is preset, in order to described Calling terminal and the called terminal carry out local exchange.

In conjunction with second of possible implementation of second aspect or the third possible implementation of second aspect, Or the 4th kind of possible implementation of second aspect, in a fifth possible implementation, further includes:

When the base station where the calling terminal switches to target BS, by the calling terminal and the called terminal Between local exchange relationship switch to the target BS and the home base stations；

When the base station where the called terminal switches to target BS, by the calling terminal and the called terminal Between local exchange relationship switch to the base station where the target BS and the calling terminal.

Third aspect present invention provides a kind of exchange control device, comprising:

Module is obtained, for obtaining the first global id information or the second global id information；

Sending module, for sending first Global ID when the acquisition module gets the first global id information Base station and gateway where information to called terminal, so that the base station and gateway where the called terminal are in basis Described first global id information is judged to meet local exchange with the base station where calling terminal and the relationship between gateway When condition, local exchange is carried out to the calling terminal and the called terminal；

Notification module, for when the acquisition module gets the second global id information, according to second Global ID Base station where information notifies the calling terminal or the called terminal carries out the calling terminal and the called terminal Local exchange.

In the first possible implementation, the acquisition module includes:

First notice reporting unit reports calling terminal for notification strategy and charging rule functions unit (PCRF) entity The Global ID of place base station and place gateway, and by base station where the calling terminal received and place gateway Global ID as the first global id information；

Second notice reporting unit, for notifying PCRF entity to report base station where calling terminal and place gateway The Global ID of base station and place gateway where Global ID and called terminal, and the calling terminal institute that will be received In the Global ID of base station and place gateway where the Global ID and called terminal of base station and place gateway as Two global id informations.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, in second of possible implementation In,

Second in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect may Implementation, in the third possible implementation, the sending module includes:

Adding unit is created, is added to described for creating local exchange request, and by the described first global id information Ground exchange request；

Request transmitting unit, for send local exchange request to where the called terminal base station and service network It closes.

Second in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect may Implementation or the third aspect the third possible implementation, in the fourth possible implementation, the notice Module includes:

First judging unit, for judging the base station kimonos where the calling terminal according to the described second global id information Be engaged in gateway whether with where the called terminal base station and gateway it is identical；

Crosspoint is notified to notify the calling terminal and institute if being judged as identical for first judging unit Identical base station where stating called terminal carries out local exchange to the calling terminal and the called terminal；

Second judgment unit further judges that the caller is whole if being judged as different for first judging unit Whether there is network communications capability between the base station where base station and the called terminal where holding；

Notice establishes unit, if being judged as the second judgment unit with network communications capability, described in notice Local exchange channel is established in base station where calling terminal or the called terminal and opposite end base station so that the calling terminal or Base station where the called terminal carries out this to the calling terminal and the called terminal by the local exchange channel Ground exchange.

Second in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect may Implementation or the third aspect the third possible implementation or the third aspect the 4th kind of possible implementation, In a fifth possible implementation, further includes:

Transformational relation sending module, for sending the calling terminal or the called terminal in network address translation (NAT) address conversion on gateway is related to the base station where the calling terminal or the called terminal, in order to described Calling terminal and the called terminal carry out local exchange.

Second in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect may Implementation or the third aspect the third possible implementation or the third aspect the 4th kind of possible implementation, Or the 5th kind of possible implementation of the third aspect, in a sixth possible implementation, further includes:

Notice stops Switching Module, for when requiring supplementation with business or Lawful Interception, notifying the calling terminal or institute Base station where stating called terminal stops carrying out local exchange to the calling terminal and the called terminal.

Fourth aspect present invention provides a kind of base station, comprising:

Receiving module, the first global id information or exchange judging result for receiving exchange control device transmission are described Exchange judging result is to be judged by the exchange control device according to the second global id information；

First local switching module, for when receiving the described first global id information, according to first Global ID Information carries out local exchange to the calling terminal and the called terminal；

Second local switching module, for when receiving the exchange judging result, according to the exchange judging result Local exchange is carried out to the calling terminal and the called terminal.

In the first possible implementation,

In conjunction with the first possible implementation of fourth aspect, in the second possible implementation, described first Local switching module includes:

First local judging unit, for judging the base station where the calling terminal according to the described first global id information It is whether identical as home base stations and Home serving gateway with gateway；

First crosspoint, if being judged as identical for the described first local judging unit, to the calling terminal and The called terminal carries out local exchange；

Second local judging unit further judges institute if being judged as different for the described first local judging unit It states the base station where calling terminal and whether there is network communications capability between the home base stations；

First establishing unit, if being judged as the described second local judging unit with network communications capability, with institute Local exchange channel is established in base station where stating calling terminal, with by the local exchange channel to the calling terminal and institute It states called terminal and carries out local exchange.

In conjunction with the first possible implementation of fourth aspect or second of possible implementation of fourth aspect, In the third possible implementation, second local switching module includes:

Second crosspoint, for where the exchange judging result that receive is the calling terminal base station and Gateway is with the base station where the called terminal and when identical gateway, to the calling terminal and the called end End carries out local exchange；

Second establishes unit, for where the exchange judging result that receive is the calling terminal base station with When there is network communications capability between base station where the called terminal, established with the base station where the calling terminal local Interchange channel, to carry out local exchange to the calling terminal and the called terminal by the local exchange channel.

Second in conjunction with the possible implementation of the first of fourth aspect or fourth aspect or fourth aspect may Implementation or fourth aspect the third possible implementation, in the fourth possible implementation, further includes:

Transformational relation receiving module, for receiving the calling terminal that the exchange control device is sent or described called Address conversion relationship of the terminal on network address translation (NAT) gateway, in order to the calling terminal and the called end End carries out local exchange；

Presetting module, for presetting the address conversion relationship of the calling terminal or the called terminal in NAT gateway, In order to carry out local exchange to the calling terminal and the called terminal.

In conjunction with second of possible implementation of fourth aspect or the third possible implementation of fourth aspect, Or the 4th kind of possible implementation of fourth aspect, in a fifth possible implementation, further includes:

First switching module, for when the base station where the calling terminal switches to target BS, by the caller Local exchange relationship between terminal and the called terminal switches to the target BS and the home base stations；

Second switching module, for when the base station where the called terminal switches to target BS, by the caller Local exchange relationship between terminal and the called terminal switches to the base where the target BS and the calling terminal It stands.

Fifth aspect present invention provides a kind of computer storage medium,

The computer storage medium can be stored with program, which includes a kind of IP language that first aspect provides when executing Some or all of the method for sound exchange step.

Sixth aspect present invention provides a kind of computer storage medium,

The computer storage medium can be stored with program, which includes a kind of IP language that second aspect provides when executing Some or all of the method for sound exchange step.

Seventh aspect present invention provides a kind of exchange control device, comprising: processor, communication interface and memory, In,

The communication interface is used for and base station and service gateway communication；

The memory is for storing program；

The processor is for executing described program, to realize

Obtain the first global id information or the second global id information；

In the first possible implementation, the processor is specifically used for:

In conjunction with the first possible implementation of the 7th aspect or the 7th aspect, in second of possible implementation In,

Second in conjunction with the first possible implementation or the 7th aspect of the 7th aspect or the 7th aspect may Implementation, in the third possible implementation, the processor is specifically used for:

Second in conjunction with the first possible implementation or the 7th aspect of the 7th aspect or the 7th aspect may Implementation or the 7th aspect the third possible implementation, in the fourth possible implementation, the processing Implement body is used for:

Second in conjunction with the first possible implementation or the 7th aspect of the 7th aspect or the 7th aspect may Implementation or the 7th aspect the third possible implementation or the 7th aspect the 4th kind of possible implementation, In a fifth possible implementation, the processor is also used to:

Second in conjunction with the first possible implementation or the 7th aspect of the 7th aspect or the 7th aspect may Implementation or the 7th aspect the third possible implementation or the 7th aspect the 4th kind of possible implementation, Or the 5th kind of possible implementation in terms of the 7th, in a sixth possible implementation, the processor is also used to:

Eighth aspect present invention provides a kind of base station, comprising: processor, communication interface and memory, wherein

The communication interface, for being communicated with exchange control device；

The memory is for storing program；

The processor is for executing described program, to realize

In the first possible implementation,

In conjunction with the first possible implementation of eighth aspect, in the second possible implementation, the processing Implement body is used for:

In conjunction with the first possible implementation of eighth aspect or second of possible implementation of eighth aspect, In the third possible implementation, the processor is specifically used for:

Second in conjunction with the possible implementation of the first of eighth aspect or eighth aspect or eighth aspect may Implementation or eighth aspect the third possible implementation, in the fourth possible implementation, the processing Device is also used to:

In conjunction with second of possible implementation of eighth aspect or the third possible implementation of eighth aspect, Or the 4th kind of possible implementation of eighth aspect, in a fifth possible implementation, the processor is also used to:

Therefore the embodiment of the present invention passes through the base station kimonos where the first global id information to be sent to called terminal Be engaged in gateway, can make base station where called terminal and gateway according to the first global id information to calling terminal and it is called eventually End carries out local exchange, alternatively, can also be according to the base station where the second global id information notice calling terminal or called terminal Local exchange is carried out to calling terminal and called terminal, to solve path redundancy phenomenon existing for VOIP in mobile network, thus Reduce network flow and network investment.

Detailed description of the invention

It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of flow diagram of the method for ip voice exchange provided in an embodiment of the present invention；

Fig. 2 is the flow diagram of the method for one of local exchange provided in an embodiment of the present invention；

Fig. 3 is the flow diagram of the method for another ip voice exchange provided in an embodiment of the present invention；

Fig. 4 is the flow diagram of the method for wherein another local exchange provided in an embodiment of the present invention；

Fig. 5 is a kind of structural schematic diagram of exchange control device provided in an embodiment of the present invention；

Fig. 6 is a kind of structural schematic diagram for obtaining module provided in an embodiment of the present invention；

Fig. 7 is a kind of structural schematic diagram of sending module provided in an embodiment of the present invention；

Fig. 8 is a kind of structural schematic diagram of notification module provided in an embodiment of the present invention；

Fig. 9 is the structural schematic diagram of another exchange control device provided in an embodiment of the present invention；

Figure 10 is a kind of structural schematic diagram of base station provided in an embodiment of the present invention；

Figure 11 is a kind of structural schematic diagram of first local switching module provided in an embodiment of the present invention；

Figure 12 is a kind of structural schematic diagram of second local switching module provided in an embodiment of the present invention；

Figure 13 is the structural schematic diagram of another base station provided in an embodiment of the present invention；

Figure 14 is the structural schematic diagram of another exchange control device provided in an embodiment of the present invention；

Figure 15 is the structural schematic diagram of another base station provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

It referring to Figure 1, is a kind of flow diagram of the method for ip voice exchange provided in an embodiment of the present invention, the side Method includes:

S101 obtains the first global id information or the second global id information；

Specifically, the global id information of exchange control device available first or the second global id information, the exchange control Device processed can be the CSCF in IMS (IP Multimedia Subsystem, IP multimedia subsystem) network (CallSessionControlFunction, controlling call entity) entity.

When calling terminal initiates VOIP calling in IMS network, the exchange control device can initiate acquisition first The acquisition request of global id information or the second global id information is to PCRF (Policy and Charging Rules Function, Policy and Charging Rules Function) entity, detailed process can be with are as follows: notice PCRF entity reports caller whole The Global ID of base station and place gateway where end, and by base station where the calling terminal received and place service network The Global ID of pass is as the first global id information；Alternatively, notice PCRF entity reports calling terminal place base station and place service The Global ID of base station and place gateway where the Global ID of gateway and called terminal, and the caller that will be received The Global ID of base station and place gateway where the Global ID and called terminal of base station and place gateway where terminal As the second global id information.Wherein, Global ID can be with the context of terminal in network element of the unique identification where it and the network element. Wherein, the PCRF entity reports the detailed process of the Global ID of base station where calling terminal and place gateway can be with are as follows: PCRF entity initiates the IP-CAN (IP-Connectivity Access Network, IP connected reference network) to calling terminal Session modification process, the Global ID of base station and gateway where notifying packet switching network to shut report calling terminal in this process, Packet switch gateway notifies gateway, gateway to notify MME that (Mobility Management Entity, mobile management are real Body), MME notifies base station, at this point, base station reports the Global ID of calling terminal place base station to relay to service network to MME, MME It closes, gateway is by the Global ID (i.e. first of gateway where the Global ID of base station where calling terminal and calling terminal Global id information) it is reported to packet switch gateway together, packet switch gateway gives first Global ID's information reporting to PCRF entity again, most PCRF entity gives first Global ID's information reporting to the exchange control device afterwards.Wherein, the PCRF entity reports caller whole The Global ID of base station and place gateway where the Global ID and called terminal of base station and place gateway where end The Global ID of base station and place gateway where detailed process and the above-mentioned PCRF entity report calling terminal it is specific Process is roughly the same, i.e., the described PCRF entity is initiated respectively to the IP-CAN session modification process of calling terminal and to called end The IP-CAN session modification process at end, with obtain respectively base station where calling terminal and place gateway Global ID and The Global ID of base station and place gateway where called terminal, to obtain the second global id information.

S102, when getting the first global id information, where the global id information to called terminal of transmission described first Base station and gateway；

Specifically, when the exchange control device gets the first global id information, the exchange control device can be with The base station where the described first global id information to called terminal and gateway are sent, so that the base where the called terminal It stands and gateway is judged according to the described first global id information with the base station where calling terminal and between gateway Relationship when meeting local exchange condition, local exchange is carried out to the calling terminal and the called terminal.Wherein, described Ground give-and-take conditions be the calling terminal where base station and gateway with where the called terminal base station and service Gateway is identical；Alternatively, base station of the local exchange condition where the calling terminal and the base where the called terminal There is network communications capability between standing.Base station and gateway where the local exchange condition of satisfaction is the calling terminal With the base station where the called terminal and when identical gateway, base station will be directly to the calling terminal and described called Terminal carries out local exchange, the switching path of the local exchange are as follows: calling terminal is to base station, then arrives called terminal.When satisfaction Local exchange condition is the base station where the calling terminal and has network communication between base station where the called terminal When ability, base station where called terminal will establish local exchange channel with base station where calling terminal, to pass through the local friendship It changes channel and local exchange, the switching path of the local exchange is carried out to the calling terminal and the called terminal are as follows: caller is whole Base station where holding calling terminal, then by base station where the local exchange channel to called terminal, finally arrive called terminal.

Wherein, the process tool of the base station where the global id information to called terminal of the transmission described first and gateway Body can be with are as follows: creation local exchange request, and the described first global id information is added to the local exchange and is requested；Send institute State local exchange request to where the called terminal base station and gateway.Wherein, the transmission local exchange is asked Ask the detailed process of the base station and gateway where the called terminal can be with are as follows: the exchange control device notifies PCRF Entity initiates the IP-CAN session modification process to called terminal, and sends local exchange request to be called eventually in this process Packet switch gateway where holding, the packet switch gateway are forwarded to the gateway where called terminal, which is forwarded to MME, MME are forwarded to base station where called terminal again, at this point, the base station and gateway where called terminal will obtain institute respectively State local exchange request.Base station and gateway where the called terminal will obtain described from local exchange request First global id information, and according to the described first global id information judge with where calling terminal base station and gateway Between relationship when meeting local exchange condition, local exchange is carried out to the calling terminal and the called terminal.

S103 notifies the calling terminal according to the described second global id information when getting the second global id information Or the base station where the called terminal carries out local exchange to the calling terminal and the called terminal；

Specifically, the exchange control device can be global according to described second when getting the second global id information Id information notify the base station where the calling terminal or the called terminal to the calling terminal and the called terminal into Row local exchange.Base station of the exchange control device where judging calling terminal according to the described second global id information and Gateway with the base station where called terminal and when identical gateway, notifies the calling terminal and the called terminal The same base station at place carries out local exchange to the calling terminal and the called terminal.Alternatively, the exchange control device Base station where judging the calling terminal according to the described second global id information and the base station where the called terminal Between when there is network communications capability, notify the base station where the calling terminal or the called terminal to the calling terminal Local exchange is carried out with the called terminal.

Exchange control device provided by the embodiment of the present invention can also send the calling terminal or the called terminal Address conversion in NAT gateway is related to the base station where the calling terminal or the called terminal, in order to described Calling terminal and the called terminal carry out local exchange；

Specifically, have on interface between PCRF entity and IMS NAT (Network Address Translation, Network address translation) gateway, the NAT gateway is responsible for the private network IP address of terminal and port translation into public network IP address and end Mouthful.The exchange control device can notify NAT gateway to report the first global id information or the second Global ID letter in PCRF entity It is inserted into the IP/PORT transformational relation of calling terminal when ceasing IMS, and NAT gateway is notified to send local hand over to called terminal in IMS The IP/PORT transformational relation that called terminal is inserted into when request is changed, so that the exchange control device can be whole by the caller of acquisition The IP/PORT transformational relation of end and called terminal is sent to the base station where the calling terminal or the called terminal, so as to In to the calling terminal and called terminal progress local exchange.Since after local exchange, IP stream is no longer pass through NAT net It closes, so the IP/PORT transformational relation that base station passes through the calling terminal and called terminal that receive can be to the IP address of terminal It is converted with port, to smoothly complete the local exchange to the calling terminal and the called terminal.

Exchange control device provided by the embodiment of the present invention can also be notified when requiring supplementation with business or Lawful Interception Base station where the calling terminal or the called terminal stops carrying out the calling terminal and the called terminal local Exchange；

Specifically, the exchange control device can be to PCRF entity when supplementary service or Lawful Interception etc. occur It sends and stops local exchange instruction, so that the packet switch gateway forwards institute where PCRF entity notice calling terminal or called terminal It states and stops local exchange instruction to corresponding gateway, then respective base station is reinformed by the gateway notice MME, MME, from And the base station where the calling terminal or the called terminal can stop to the calling terminal and the called terminal into Row local exchange.

Further, then Fig. 2 is referred to, for the process of the method for one of local exchange provided in an embodiment of the present invention Schematic diagram.The method of the embodiment of the present invention can correspond to the S103 in above-mentioned Fig. 1 corresponding embodiment.The embodiment of the present invention The method specifically includes:

S201 judges whether base station where the calling terminal and gateway are equal according to the described second global id information With where the called terminal base station and gateway it is identical；

Specifically, since second Global ID information includes the overall situation of base station and place gateway where calling terminal The Global ID of base station and place gateway where ID and called terminal, thus by base station where judge calling terminal with Whether the Global ID of place gateway is identical as the Global ID of base station where called terminal and place gateway, can sentence It is disconnected go out the calling terminal where base station and gateway whether with where the called terminal base station and gateway It is identical.When judge the Global ID of base station where calling terminal and place gateway with base station where called terminal and place When the Global ID of gateway is identical, that is, illustrate base station where the calling terminal and gateway with the called terminal The base station at place is identical with gateway.

S202 notifies the identical base station where the calling terminal and the called terminal to the calling terminal and institute It states called terminal and carries out local exchange；

Specifically, the base station and gateway where judging the calling terminal in S201 are and where the called terminal Base station it is identical with gateway when, the exchange control device can notify where the calling terminal and the called terminal Identical base station local exchange, the switching path of the local exchange are carried out to the calling terminal and the called terminal are as follows: Calling terminal is to base station, then arrives called terminal.

S203 judges whether there is net between the base station where the calling terminal and the base station where the called terminal Network communication capacity；

Specifically, the base station and gateway where judging the calling terminal in S201 are not equal and the called terminal When the base station at place is identical with gateway, the exchange control device can further judge the base where the calling terminal Stand and the called terminal where base station between whether there is network communications capability, that is, whether judge between two base stations can be with IP intercommunication.

S204, the base station where notifying the calling terminal or the called terminal are established local exchange with opposite end base station and are led to Road；

Specifically, having between the base station where judging the calling terminal in S203 and the base station where the called terminal When having network communications capability, the exchange control device can notify the base station where the calling terminal or the called terminal Local exchange channel is established with opposite end base station, so that the base station where the calling terminal or the called terminal passes through described Ground interchange channel carries out local exchange, the switching path of the local exchange to the calling terminal and the called terminal are as follows: main It cries terminal to base station where calling terminal, then by base station where the local exchange channel to called terminal, finally arrives called Terminal.

The embodiment of the present invention is by judging whether local friendship can be carried out between calling terminal and called terminal in the side IMS It changes, and notifies base station to carry out local exchange to calling terminal and called terminal when local exchange can be carried out by judging, with solution Certainly path redundancy phenomenon existing for VOIP in mobile network, to reduce network flow and network investment.

Fig. 3 is referred to, it is described for the flow diagram of the method for another ip voice exchange provided in an embodiment of the present invention Method includes:

S301 receives the exchange control device is sent first global id information or exchange judging result；

Specifically, base station can receive the first global id information or exchange judging result of exchange control device transmission, this Refer in particular to the base station where called terminal in the base station at place.Wherein, the exchange judging result be by the exchange control device according to What the second global id information was judged.Wherein, first Global ID information includes base station where calling terminal and place clothes The Global ID of business gateway；Second Global ID information include base station where calling terminal and place gateway Global ID, And the Global ID of base station and place gateway where called terminal.

Base station where called terminal is receiving the first global id information or exchange judgement knot that exchange control device is sent Before fruit, the exchange control device needs first to obtain the first global id information or the second global id information, the exchange control Device obtains the first global id information or the detailed process of the second global id information and may refer in above-mentioned Fig. 1 corresponding embodiment S101 is not discussed here.

S302, it is whole to the caller according to the described first global id information when receiving the described first global id information End and the called terminal carry out local exchange；

Specifically, when the base station where called terminal receives the described first global id information, the called terminal institute Base station local exchange can be carried out to the calling terminal and the called terminal according to the described first global id information.When Judge that calling terminal and called terminal are in identical base station and identical gateway according to the described first global id information, Base station directly will carry out local exchange to the calling terminal and the called terminal；Sentence when according to the described first global id information It is disconnected go out the calling terminal where base station and the home base stations between when there is network communications capability, the home base stations Local exchange can be carried out to the calling terminal and the called terminal by the base station where the calling terminal.

S303, when receiving the exchange judging result, according to the exchange judging result to the calling terminal and The called terminal carries out local exchange；

Specifically, the base station where the called terminal can be according to described when receiving the exchange judging result It exchanges judging result and local exchange is carried out to the calling terminal and the called terminal.Wherein, when the exchange received Judging result be the calling terminal where base station and gateway with where the called terminal base station and service network When closing identical, local exchange, the path of local exchange herein are as follows: caller are carried out to the calling terminal and the called terminal Terminal to base station, then arrive called terminal.When the exchange judging result received be the calling terminal where base station with When there is network communications capability between base station where the called terminal, established with the base station where the calling terminal local Interchange channel, to carry out local exchange to the calling terminal and the called terminal by the local exchange channel, herein Local exchange path are as follows: calling terminal is to base station where calling terminal, then by the local exchange channel to being called end Base station where end, finally arrives called terminal.

In addition, the exchange judging result can also be sent to the base where calling terminal by the exchange control device It stands, so that the base station where the calling terminal can also be according to the exchange judging result to the calling terminal and the quilt Terminal is made to carry out local exchange.

Base station provided by the embodiment of the present invention can also receive the calling terminal that the exchange control device is sent Or address conversion relationship of the called terminal in NAT gateway, in order to the calling terminal and the called terminal into Row local exchange；Alternatively, the address conversion relationship of the calling terminal or the called terminal in NAT gateway is preset, so as to In to the calling terminal and called terminal progress local exchange；

Specifically, having NAT gateway on interface between PCRF entity and IMS, the NAT gateway is responsible for the private of terminal Net IP address and port translation are at public network IP address and port.The exchange control device can notify NAT gateway in PCRF reality The IP/PORT transformational relation of insertion calling terminal when body reports the first global id information or the second global id information to IMS, and lead to Know that NAT gateway sends the IP/PORT transformational relation that called terminal is inserted into when local exchange is requested in IMS to called terminal, with To the address conversion relationship of the calling terminal or the called terminal in NAT gateway, at this point, base station can receive the friendship The address conversion relationship of the calling terminal or the called terminal of control device transmission in NAT gateway is changed, to terminal IP address and port converted, the local of the calling terminal and the called terminal is handed over so as to smoothly complete It changes.

Certainly, base station can also preset the address conversion of the calling terminal or the called terminal in NAT gateway and close System, in order to carry out local exchange to the calling terminal and the called terminal.It is in together with calling terminal and called terminal As soon as in base station, if the source IP/source port (assuming that being IP1/PORT1) for the data packet that calling terminal is sent is corresponding called Destination IP/the destination port (assuming that being IP2/PORT2) for the data packet that terminal is sent, and the mesh of the data packet of calling terminal transmission IP/ destination port (assuming that being IP3/PORT3) data packet that just corresponding called terminal is sent destination IP/destination port it is (false If being IP4/PORT4), then base station and gateway are converted to IP1/PORT1 when receiving the data packet of calling terminal transmission IP3/PORT3 is converted to IP4/PORT4, is then sent to called terminal by IP2/PORT2；Alternatively, base station and gateway exist When receiving the data packet of called terminal transmission, IP2/PORT2 is converted into IP1/PORT1, IP4/PORT4 is converted into IP3/ PORT3 is then sent to calling terminal.

Base station provided by the embodiment of the present invention can also switch to target BS when the base station where the calling terminal When, the local exchange relationship between the calling terminal and the called terminal is switched into the target BS and the local Base station；When the base station where the called terminal switches to target BS, by the calling terminal and the called terminal it Between local exchange relationship switch to the base station where the target BS and the calling terminal；

Specifically, the base station where calling terminal and the base station where called terminal to calling terminal and called terminal into Base in the case where row local exchange, when the base station where the calling terminal switches to target BS, where called terminal The local exchange relationship between the calling terminal and the called terminal can be switched to the target BS and described by standing Home base stations, i.e. base station where calling terminal when switching to target BS, by where called terminal base station and service network The Global ID of pass is sent to target BS, sentences target BS according to the Global ID of base station and gateway where called terminal Whether base station where disconnected target BS and called terminal has network communications capability, if having network communications capability, target base It stands and establishes local exchange channel with base station where called terminal, to carry out local exchange to calling terminal and called terminal.

When the base station where the called terminal switches to target BS, base station where called terminal can also will be described Local exchange relationship between calling terminal and the called terminal switches to where the target BS and the calling terminal Base station, i.e. base station where called terminal when switching to target BS, by where calling terminal base station and gateway Global ID be sent to target BS, make target BS according to the Global ID of base station and gateway where calling terminal judge Whether base station where target BS and calling terminal has network communications capability, if having network communications capability, target BS Local exchange channel is established with base station where calling terminal, to carry out local exchange to calling terminal and called terminal.

Base station provided by the embodiment of the present invention is by receiving the first global id information or friendship that exchange control device is sent Judging result is changed, can make base station according to the first global id information or exchange judging result to the calling terminal and described called Terminal carry out local exchange, to solve path redundancy phenomenon existing for VOIP in mobile network, thus reduce network flow and Network investment.

Further, then Fig. 4 is referred to, for the stream of the method for wherein another local exchange provided in an embodiment of the present invention Journey schematic diagram.The method of the embodiment of the present invention can correspond to the S302 in above-mentioned Fig. 3 corresponding embodiment.The embodiment of the present invention The method specifically include:

S401 judges whether base station where the calling terminal and gateway are equal according to the described first global id information It is identical as home base stations and Home serving gateway；

Specifically, when the base station where called terminal receives the described first global id information, the called terminal institute Base station can judge whether base station where the calling terminal and gateway equal according to the described first global id information It is identical as home base stations and Home serving gateway.

S402 carries out local exchange to the calling terminal and the called terminal；

Specifically, base station and gateway where judging the calling terminal in S401 with home base stations and local When gateway is identical, illustrate that calling terminal and called terminal are in together on a base station, which can be according to described first Global id information determines the context of calling terminal, should to carry out local exchange to the calling terminal and the called terminal The switching path of local exchange are as follows: calling terminal is to base station, then arrives called terminal.

S403 judges the base station where the calling terminal and whether has network communication energy between the home base stations Power；

Specifically, the base station and gateway where judging the calling terminal in S401 be not with home base stations and When Home serving gateway is identical, the base station where called terminal can further judge base station where the calling terminal with Whether there is network communications capability between the home base stations.Its deterministic process is specifically as follows: the base station where called terminal The base station where local exchange channel request to calling terminal is established in transmission, and is added in described establish in local exchange channel request Add the described first global id information, allow base station where calling terminal according to the described first global id information judge whether Local exchange is done to calling terminal, if judgement will do local exchange, the base station where responding called terminal can be to caller Terminal and called terminal carry out local exchange, thus where the base station where called terminal may determine that the calling terminal There is network communications capability between base station where base station and the called terminal；Otherwise, the base station where called terminal can be with Judge do not have network communications capability between the base station where the calling terminal and the base station where the called terminal.

Local exchange channel is established in base station where S404, with the calling terminal, to pass through the local exchange channel Local exchange is carried out to the calling terminal and the called terminal；

Specifically, when S403 judge the base station where the calling terminal and between the home base stations it is logical with network When letter ability, the base station where called terminal is responded in the base station where illustrating calling terminal can be to calling terminal and called terminal Local exchange is carried out, at this point, the base station where called terminal can establish local exchange with the base station where the calling terminal Channel, to carry out local exchange to the calling terminal and the called terminal by the local exchange channel, this is locally handed over The switching path changed are as follows: base station where calling terminal to calling terminal, then pass through the local exchange channel to called terminal institute In base station, called terminal is finally arrived.Between base station and the home base stations where S403 judges the calling terminal not When with network communications capability, it will be unable to carry out local exchange.

Wherein, the base station where establishing local exchange channel request to calling terminal is sent in the base station where called terminal When, the address conversion relationship between the calling terminal and called terminal of acquisition can also be added to by the base station where called terminal In the local exchange channel request, make the base station where calling terminal and the base station where called terminal can be according to described Address conversion relationship favorably accomplishes the local exchange to calling terminal and called terminal.

Base station provided by the embodiment of the present invention can according to the receive first global id information to calling terminal and by Terminal is made to carry out local exchange, to solve path redundancy phenomenon existing for VOIP in mobile network, to reduce network flow And network investment.

Fig. 5 is referred to, is a kind of structural schematic diagram of exchange control device 1 provided in an embodiment of the present invention, the exchange Control device 1 may include: to obtain module 11, sending module 12, notification module 13；

The acquisition module 11, for obtaining the first global id information or the second global id information；

Specifically, the global id information of the acquisition module 11 available first or the second global id information, wherein described Exchange control device 1 can be the CSCF entity in IMS network.When calling terminal initiates VOIP calling in IMS network, institute It states and obtains module 11 and can initiate to obtain the acquisition request of the first global id information or the second global id information to PCRF entity, with The PCRF entity is set to obtain the first global id information or the second global id information from associated base stations and gateway, and by the One global id information or the second global id information are sent to the acquisition module 11.

The sending module 12, for when the acquisition module 11 gets the first global id information, sending described the Base station and gateway where one global id information to called terminal, so that base station and service network where the called terminal It closes and judges to meet with the base station where calling terminal and the relationship between gateway according to the described first global id information When local exchange condition, local exchange is carried out to the calling terminal and the called terminal；

Specifically, the sending module 12 can be sent when the acquisition module 11 gets the first global id information Base station and gateway where the first global id information to called terminal so that base station where the called terminal and Gateway is judged and the base station where calling terminal and the pass between gateway according to the described first global id information When system meets local exchange condition, local exchange is carried out to the calling terminal and the called terminal.Wherein, the local friendship Change condition be the calling terminal where base station and gateway with where the called terminal base station and gateway It is identical；Alternatively, the local exchange condition be the calling terminal where base station and the called terminal where base station it Between have network communications capability.When satisfaction local exchange condition be the calling terminal where base station and gateway with When base station where the called terminal is identical with gateway, base station will be directly to the calling terminal and the called terminal Carry out local exchange, the switching path of the local exchange are as follows: calling terminal is to base station, then arrives called terminal.When the local of satisfaction Give-and-take conditions are the base station where the calling terminal and have network communications capability between base station where the called terminal When, base station where called terminal will establish local exchange channel with base station where calling terminal, with logical by the local exchange Road carries out local exchange, the switching path of the local exchange are as follows: calling terminal arrives to the calling terminal and the called terminal Base station where calling terminal, then by base station where the local exchange channel to called terminal, finally arrive called terminal.

The notification module 13, for when the acquisition module 11 gets the second global id information, according to described the Two global id informations notify the base station where the calling terminal or the called terminal to the calling terminal and described called Terminal carries out local exchange；

Specifically, the notification module 13 can basis when the acquisition module 11 gets the second global id information The second global id information notifies the base station where the calling terminal or the called terminal to the calling terminal and institute It states called terminal and carries out local exchange.The notification module 13 is judging calling terminal institute according to the described second global id information Base station and gateway with the base station where called terminal and when identical gateway, notify the calling terminal and institute Same base station where stating called terminal carries out local exchange to the calling terminal and the called terminal.Alternatively, described logical Know base station and the called terminal institute of the module 13 where judging the calling terminal according to the described second global id information Base station between there is network communications capability when, notify the base station where the calling terminal or the called terminal to described Calling terminal and the called terminal carry out local exchange.

Further, then Fig. 6 is referred to, is the structural schematic diagram of the acquisition module 11 in above-mentioned Fig. 5, the acquisition module 11 may include: the first notice reporting unit 111, the second notice reporting unit 112；

The first notice reporting unit 111 is reported for notification strategy with charging rule functions unit (PCRF) entity The Global ID of base station and place gateway where calling terminal, and by base station where the calling terminal received and place The Global ID of gateway is as the first global id information；

Specifically, the first notice reporting unit 111 can notify PCRF entity report base station where calling terminal and The Global ID of place gateway.Wherein, Global ID can in network element of the unique identification where it and the network element terminal up and down Text.Wherein, the PCRF entity reports the detailed process of the Global ID of base station where calling terminal and place gateway can be with Are as follows: PCRF entity initiates the IP-CAN session modification process to calling terminal, and packet switching network is notified to shut report master in this process The Global ID of base station and gateway where being terminal, packet switch gateway notify gateway, gateway to notify MME, MME logical Base station is known, at this point, base station reports the Global ID of calling terminal place base station to relay to gateway, service network to MME, MME It closes Global ID's (i.e. the first Global ID letter of gateway where the Global ID of base station where calling terminal and calling terminal Breath) it is reported to packet switch gateway together, packet switch gateway gives first Global ID's information reporting to PCRF entity again, and last PCRF is real Body gives first Global ID's information reporting to the first notice reporting unit 111.

The second notice reporting unit 112, for base station where notifying PCRF entity to report calling terminal and place clothes Be engaged in the Global ID of gateway and the Global ID of called terminal place base station and place gateway, and the master that will be received The overall situation of base station and place gateway where the Global ID and called terminal of base station and place gateway where being terminal ID is as the second global id information；

Specifically, the second notice reporting unit 112 can notify PCRF entity report base station where calling terminal and The Global ID of base station and place gateway where the Global ID of place gateway and called terminal.Wherein, the PCRF Base station where the Global ID and called terminal of base station and place gateway where entity reports calling terminal and place service Base station and place gateway where the detailed process of the Global ID of gateway and the above-mentioned PCRF entity report calling terminal Global ID detailed process it is roughly the same, i.e., the described PCRF entity initiates the IP-CAN session modification mistake to calling terminal respectively Journey and IP-CAN session modification process to called terminal, with base station and place gateway where obtaining calling terminal respectively Global ID and called terminal where base station and place gateway Global ID, to obtain the second global id information.

Further, then Fig. 7 is referred to, is the structural schematic diagram of the sending module 12 in above-mentioned Fig. 5, the sending module 12 may include: creation adding unit 121, request transmitting unit 122；

The creation adding unit 121 is added to for creating local exchange request, and by the described first global id information The local exchange request；

The request transmitting unit 122, for sending the local exchange request to the base station where the called terminal And gateway；

Specifically, the request transmitting unit 122 can after the creation adding unit 121 creation local exchange request With send local exchange request to where the called terminal base station and gateway.Wherein, described to send described The detailed process of ground exchange request to base station and gateway where the called terminal can be with are as follows: the request transmitting unit 122 notice PCRF entities initiate the IP-CAN session modification process to called terminal, and in this process request local exchange The packet switch gateway being sent to where called terminal, the packet switch gateway are forwarded to the gateway where called terminal, the clothes Base station where business gateway forwards are forwarded to called terminal to MME, MME again, at this point, base station and gateway where called terminal The local exchange request will be obtained respectively.Base station and gateway where the called terminal will be asked from the local exchange It asks middle and obtains the described first global id information, and judge and the base where calling terminal according to the described first global id information When the relationship between gateway of standing meets local exchange condition, the calling terminal and the called terminal are carried out local Exchange.

Further, then Fig. 8 is referred to, is the structural schematic diagram of the notification module 13 in above-mentioned Fig. 5, the notification module 13 may include: the first judging unit 131, notice crosspoint 132, second judgment unit 133, notice establish unit 134；

First judging unit 131, where judging the calling terminal according to the described second global id information Base station and gateway whether with where the called terminal base station and gateway it is identical；

Specifically, since second Global ID information includes the overall situation of base station and place gateway where calling terminal The Global ID of ID and called terminal place base station and place gateway, so first judging unit 131 passes through judgement The Global ID of base station where calling terminal and place gateway whether with base station and place gateway where called terminal Global ID it is identical, can judge base station where the calling terminal and gateway whether with the called terminal institute Base station it is identical with gateway.Base station and place service where first judging unit 131 judges calling terminal When the Global ID of gateway is identical as the Global ID of base station where called terminal and place gateway, that is, illustrate that the caller is whole Hold where base station and gateway with where the called terminal base station and gateway it is identical.

The notice crosspoint 132 notifies the master if being judged as identical for first judging unit 131 Identical base station where being terminal and the called terminal carries out local exchange to the calling terminal and the called terminal；

Specifically, base station and gateway where judging the calling terminal in first judging unit 131 with When base station where the called terminal is identical with gateway, the notice crosspoint 132 can notify that the caller is whole Identical base station where end and the called terminal carries out local exchange to the calling terminal and the called terminal, this The switching path of ground exchange are as follows: calling terminal is to base station, then arrives called terminal.

The second judgment unit 133 further judges if being judged as different for first judging unit 131 Whether there is network communications capability between the base station where base station and the called terminal where the calling terminal；

Specifically, the base station and gateway where judging the calling terminal in first judging unit 131 are not With the base station where the called terminal and when identical gateway, the second judgment unit 133 can further judge Whether there is network communications capability between the base station where base station and the called terminal where the calling terminal, that is, judges Whether can be with IP intercommunication between two base stations.

The notice establishes unit 134, if being judged as the second judgment unit 133 with network communications capability, Local exchange channel is established with opposite end base station in base station where then notifying the calling terminal or the called terminal, so that described Base station where calling terminal or the called terminal is by the local exchange channel to the calling terminal and described called Terminal carries out local exchange；

Specifically, base station and the called terminal where judging the calling terminal in the second judgment unit 133 When having network communications capability between the base station at place, the notice, which establishes unit 134, can notify the calling terminal or institute Local exchange channel is established with opposite end base station in base station where stating called terminal, so that the calling terminal or the called terminal The base station at place carries out local exchange, the local to the calling terminal and the called terminal by the local exchange channel The switching path of exchange are as follows: base station where calling terminal to calling terminal, then pass through the local exchange channel to called terminal Place base station, finally arrives called terminal.

Fig. 9 is referred to again, it is described for the structural schematic diagram of another exchange control device 1 provided in an embodiment of the present invention Exchange control device 1 may include acquisition module 11 in above-mentioned Fig. 5, sending module 12, notification module 13, further, institute Stating exchange control device 1 can also include: transformational relation sending module 14, notice stopping Switching Module 15；

The transformational relation sending module 14, for sending the calling terminal or the called terminal in NAT gateway Address conversion be related to the base station where the calling terminal or the called terminal, in order to the calling terminal and institute It states called terminal and carries out local exchange；

Specifically, having NAT gateway on interface between PCRF entity and IMS, the NAT gateway is responsible for the private of terminal Net IP address and port translation are at public network IP address and port.The transformational relation sending module 14 can notify NAT gateway to exist The IP/PORT conversion pass of insertion calling terminal when PCRF entity reports the first global id information or the second global id information to IMS System, and NAT gateway is notified to close in IMS to the IP/PORT conversion that called terminal sends insertion called terminal when local exchange is requested System, so that the transformational relation sending module 14 can be by the IP/PORT transformational relation of the calling terminal of acquisition and called terminal It is sent to the base station where the calling terminal or the called terminal, in order to the calling terminal and the called terminal Carry out local exchange.Since after local exchange, IP stream is no longer pass through NAT gateway, so base station passes through the caller end received The IP/PORT transformational relation of end and called terminal can IP address to terminal and port convert, to smoothly complete to institute State the local exchange of calling terminal and the called terminal.

The notice stops Switching Module 15, for when requiring supplementation with business or Lawful Interception, notifying that the caller is whole Base station where end or the called terminal stops carrying out local exchange to the calling terminal and the called terminal；

Specifically, when supplementary service or Lawful Interception etc. occur, notice stopping Switching Module 15 can be to PCRF entity, which is sent, stops local exchange instruction, so that the packet switching network where PCRF entity notice calling terminal or called terminal It closes and forwards stoppings local exchange instruction to corresponding gateway, then reinformed pair by gateway notice MME, MME Base station is answered, so that the base station where the calling terminal or the called terminal can stop to the calling terminal and the quilt Terminal is made to carry out local exchange.

Referring to Figure 10, be a kind of structural schematic diagram of base station 2 provided in an embodiment of the present invention, the base station 2 refer in particular to by The base station where terminal is cried, the base station 2 may include: receiving module 21, the first local switching module 22, the second local exchange Module 23；

The receiving module 21, the first global id information or exchange judgement knot for receiving exchange control device transmission Fruit, the exchange judging result are to be judged by the exchange control device according to the second global id information；

Specifically, the receiving module 21 can receive the first global id information of exchange control device transmission or exchange is sentenced Disconnected result.Wherein, the exchange judging result is to be judged by the exchange control device according to the second global id information. Wherein, first Global ID information includes the Global ID of base station and place gateway where calling terminal；Described second is complete Office's id information includes base station and place where the Global ID and called terminal of base station and place gateway where calling terminal The Global ID of gateway.

The receiving module 21 receive the first global id information that exchange control device is sent or exchange judging result it Before, the exchange control device needs first to obtain the first global id information or the second global id information, the exchange control device It is real that the detailed process of the global id information of acquisition first or the second global id information may refer to 11 institute of acquisition module in above-mentioned Fig. 5 Existing function, is not discussed here.

First local switching module 22, for when receiving the described first global id information, according to described first Global id information carries out local exchange to the calling terminal and the called terminal；

Specifically, when the receiving module 21 receives the described first global id information, the described first local interchange mode Block 22 can carry out local exchange to the calling terminal and the called terminal according to the described first global id information.Work as basis Described first global id information judges that calling terminal and called terminal are in identical base station and identical gateway, described First local switching module 22 directly will carry out local exchange to the calling terminal and the called terminal；When according to described It is described when one global id information judges the base station where the calling terminal and has network communications capability between home base stations First local switching module 22 can also be by the base station where the calling terminal to the calling terminal and the called end End carries out local exchange.

Second local switching module 23, for being sentenced according to the exchange when receiving the exchange judging result Disconnected result carries out local exchange to the calling terminal and the called terminal；

Specifically, when the receiving module 21 receives the exchange judging result, second local switching module 23 can carry out local exchange to the calling terminal and the called terminal according to the exchange judging result.

Further, then referring to Figure 11, it is the structural schematic diagram of the first local switching module 22 in above-mentioned Figure 10, institute Stating the first local switching module 22 may include: the first local judging unit 221, first the 222, second local judgement of crosspoint Unit 223, first establishing unit 224；

Described first local judging unit 221, for judging the calling terminal institute according to the described first global id information Base station and gateway it is whether identical as home base stations and Home serving gateway；

Specifically, the described first local judgement is single when the receiving module 21 receives the described first global id information Member 221 can be judged according to the described first global id information base station where the calling terminal and gateway whether and this Ground base station is identical with Home serving gateway.

First crosspoint 222, if being judged as identical for the described first local judging unit 221, to described Calling terminal and the called terminal carry out local exchange；

Specifically, base station and service network where judging the calling terminal in the described first local judging unit 221 When Guan Junyu home base stations are identical with Home serving gateway, illustrate that calling terminal and called terminal are in together on a base station, institute The context of calling terminal can be determined according to the described first global id information by stating the first crosspoint 222, to the caller Terminal and the called terminal carry out local exchange, the switching path of the local exchange are as follows: calling terminal is to base station, then arrives called Terminal.

Described second local judging unit 223, if being judged as different for the described first local judging unit 221, into One step judges the base station where the calling terminal and whether has network communications capability between the home base stations；

Specifically, base station and service network where judging the calling terminal in the described first local judging unit 221 When pass is not with home base stations and identical Home serving gateway, the described second local judging unit 223 can further be sentenced Whether break the base station where the calling terminal and has network communications capability between the home base stations.Described second locally sentences The deterministic process of disconnected unit 223 is specifically as follows: local exchange channel request is established in the described second local transmission of judging unit 223 The described first global id information is added to the base station where calling terminal, and in described establish in local exchange channel request, is made Base station where calling terminal can judge whether to do local exchange to calling terminal according to the described first global id information, If judgement will do local exchange, calling terminal and called terminal can be carried out by responding the described second local judging unit 223 Local exchange, so that the second local judging unit 223 may determine that base station and the quilt where the calling terminal Crying has network communications capability between the base station where terminal；Otherwise, the described second local judging unit 223 may determine that institute It states and does not have network communications capability between the base station where calling terminal and the base station where the called terminal.

The first establishing unit 224, if being judged as the described second local judging unit 223 with network communication energy Power then establishes local exchange channel with the base station where the calling terminal, with by the local exchange channel to the master Terminal and the called terminal is made to carry out local exchange；

Specifically, the base station where the described second local judging unit 223 judges the calling terminal and described When there is network communications capability between ground base station, illustrate the base station where calling terminal respond base station 2 can to calling terminal and Called terminal carries out local exchange, at this point, the first establishing unit 224 can be established with the base station where the calling terminal Local exchange channel, to carry out local exchange to the calling terminal and the called terminal by the local exchange channel, The switching path of the local exchange are as follows: base station where calling terminal to calling terminal, then pass through the local exchange channel to quilt Base station where being terminal, finally arrives called terminal.Where the described second local judging unit 223 judges the calling terminal Base station and the home base stations between do not have network communications capability when, will be unable to carry out local exchange.

Wherein, the base station where local exchange channel request to calling terminal is established in the transmission of first establishing unit 224 When, the first establishing unit 224 can also add the address conversion relationship between the calling terminal and called terminal of acquisition It can be according to the address conversion to the base station and home base stations in the local exchange channel request, made where calling terminal Relationship favorably accomplishes the local exchange to calling terminal and called terminal.

Further, then referring to Figure 12, it is the structural schematic diagram of the second local switching module 23 in above-mentioned Figure 10, institute Stating the second local switching module 23 may include: the second crosspoint 231, second establishes unit 232；

Second crosspoint 231, for where the exchange judging result received is the calling terminal Base station and gateway with the base station where the called terminal and when identical gateway, to the calling terminal and institute It states called terminal and carries out local exchange；

Described second establishes unit 232, for where the exchange judging result received is the calling terminal Base station and the called terminal where base station between have network communications capability when, with the base station where the calling terminal Local exchange channel is established, to carry out local friendship to the calling terminal and the called terminal by the local exchange channel It changes.

Base station 2 provided by the embodiment of the present invention is by receiving the first global id information or friendship that exchange control device is sent Judging result is changed, can make base station 2 according to the first global id information or exchange judging result to the calling terminal and the quilt Terminal is made to carry out local exchange, to solve path redundancy phenomenon existing for VOIP in mobile network, to reduce network flow And network investment.

Again referring to Figure 13, for the structural schematic diagram of another base station 2 provided in an embodiment of the present invention, the base station 2 can With comprising receiving module 21, the first local switching module 22, the second local switching module 23 in above-mentioned Figure 10 corresponding embodiment, Further, the base station 2 can also include: transformational relation receiving module 24, presetting module 25, the first switching module 26, Two switching modules 27；

The transformational relation receiving module 24, for receiving the calling terminal or institute that the exchange control device is sent Address conversion relationship of the called terminal in NAT gateway is stated, in order to carry out this to the calling terminal and the called terminal Ground exchange；

Specifically, having NAT gateway on interface between PCRF entity and IMS, the NAT gateway is responsible for the private of terminal Net IP address and port translation are at public network IP address and port.The exchange control device can notify NAT gateway in PCRF reality The IP/PORT transformational relation of insertion calling terminal when body reports the first global id information or the second global id information to IMS, and lead to Know that NAT gateway sends the IP/PORT transformational relation that called terminal is inserted into when local exchange is requested in IMS to called terminal, with To the address conversion relationship of the calling terminal or the called terminal in NAT gateway, at this point, the transformational relation receives mould Block 24 can receive the address of the calling terminal or the called terminal of the exchange control device transmission in NAT gateway Transformational relation, with to terminal IP address and port convert, so as to smoothly complete to the calling terminal and described The local exchange of called terminal.

The presetting module 25 turns for presetting the address of the calling terminal or the called terminal in NAT gateway Relationship is changed, in order to carry out local exchange to the calling terminal and the called terminal；

Specifically, the presetting module 25 can preset the calling terminal or the called terminal in NAT gateway Address conversion relationship, in order to carry out local exchange to the calling terminal and the called terminal.With calling terminal and it is called For terminal is in together in base station 2, if the presetting module 25 presets source IP/source port of the data packet of calling terminal transmission Destination IP/the destination port of (assuming that being IP1/PORT1) data packet that just corresponding called terminal is sent is (assuming that be IP2/ PORT2), and destination IP/destination port (assuming that being IP3/PORT3) of the data packet of calling terminal transmission just corresponds to called terminal Destination IP/destination port (assuming that being IP4/PORT4) of the data packet of transmission, then base station 2 and gateway are receiving caller end When holding the data packet sent, IP1/PORT1 is converted into IP2/PORT2, IP3/PORT3 is converted into IP4/PORT4, is then sent out Give called terminal；Alternatively, base station 2 and gateway convert IP2/PORT2 when receiving the data packet of called terminal transmission For IP1/PORT1, IP4/PORT4 is converted into IP3/PORT3, is then sent to calling terminal.

Wherein, base station 2 can obtain the caller by the transformational relation receiving module 24 or the presetting module 25 The address conversion relationship of terminal or the called terminal in NAT gateway.

First switching module 26, for when the base station where the calling terminal switches to target BS, by institute The local exchange relationship stated between calling terminal and the called terminal switches to the target BS and the home base stations；

Specifically, the base station where calling terminal and the base station where called terminal to calling terminal and called terminal into In the case where row local exchange, when the base station where the calling terminal switches to target BS, first switching module 26 can switch to the local exchange relationship between the calling terminal and the called terminal target BS and described Home base stations, i.e. base station where calling terminal when switching to target BS, by where called terminal base station and service network The Global ID of pass is sent to target BS, sentences target BS according to the Global ID of base station and gateway where called terminal Whether base station where disconnected target BS and called terminal has network communications capability, if having network communications capability, target base It stands and establishes local exchange channel with base station where called terminal, to carry out local exchange to calling terminal and called terminal.

Second switching module 27, for when the base station where the called terminal switches to target BS, by institute It states the local exchange relationship between calling terminal and the called terminal and switches to the target BS and calling terminal institute Base station；

Specifically, second switching module 27 will be led when the base station where called terminal is when switching to target BS It makes the Global ID of base station and gateway where terminal be sent to target BS, makes target BS according to where calling terminal The Global ID of base station and gateway judges whether base station where target BS and calling terminal has network communications capability, if tool Have network communications capability, then local exchange channel is established in base station where target BS and calling terminal, with to calling terminal and by Terminal is made to carry out local exchange.

The embodiment of the invention also provides a kind of computer storage mediums, wherein the computer storage medium can store Have program, the program execute when include above-mentioned Fig. 1 to Fig. 2 embodiment of the method in record ip voice exchange method part Or Overall Steps.

The embodiment of the invention also provides a kind of computer storage mediums, wherein the computer storage medium can store Have program, the program execute when include above-mentioned Fig. 3 to Fig. 4 embodiment of the method in record ip voice exchange method part Or Overall Steps.

Again referring to Figure 14, it is the structural schematic diagram of another exchange control device 1 provided in an embodiment of the present invention, it is described Exchange control device 1 may include processor 1001, communication interface 1002 and the (place in exchange control device 1 of memory 1003 The quantity for managing device 1001 can be to be one or more, in Figure 14 by taking a processor 1001 as an example).Some embodiments of the present invention In, processor 1001, communication interface 1002 and memory 1003 can be connected by communication bus or other modes, wherein Figure 14 For being connected by communication bus.

Wherein, the communication interface 1002 is used for and base station and service gateway communication；

The memory 1003 is for storing program；

The processor 1001 is for executing described program, to realize

Obtain the first global id information or the second global id information；

Wherein, the processor 1001 is specifically used for:

Wherein, the local exchange condition be the calling terminal where base station and gateway with the called end Base station where holding is identical with gateway；Alternatively,

Wherein, the processor 1001 is described when getting the first global id information in execution, and it is complete to send described first Base station where office's id information to called terminal and when gateway, is specifically used for:

Wherein, the processor 1001 is described when getting the second global id information in execution, complete according to described second Office's id information notifies the base station where the calling terminal or the called terminal to the calling terminal and the called terminal When carrying out local exchange, it is specifically used for:

Wherein, the processor 1001 is also used to:

It sends the address conversion of the calling terminal or the called terminal in NAT gateway and is related to the calling terminal Or the base station where the called terminal, in order to carry out local exchange to the calling terminal and the called terminal.

Wherein, the processor 1001 is also used to:

Again referring to Figure 15, it is the structural schematic diagram of another base station 2 provided in an embodiment of the present invention, the base station 2 is special Refer to the base station where called terminal.The base station 2 may include 2003 (base of processor 2001, communication interface 2002 and memory The quantity for the processor 2001 stood in 2 can be one or more, in Figure 15 by taking a processor 2001 as an example).Of the invention In some embodiments, processor 2001, communication interface 2002 and memory 2003 can be connected by communication bus or other modes, Wherein, Figure 15 by communication bus for being connected.

Wherein, the communication interface 2002, for being communicated with exchange control device；

The memory 2003 is for storing program；

The processor 2001 is for executing described program, to realize

Wherein, first Global ID information includes the Global ID of base station and place gateway where calling terminal；

Wherein, the processor 2001 execute it is described when receiving the described first global id information, according to described the When one global id information carries out local exchange to the calling terminal and the called terminal, it is specifically used for:

Wherein, the processor 2001 is described when receiving the exchange judging result in execution, according to the exchange When judging result carries out local exchange to the calling terminal and the called terminal, it is specifically used for:

Wherein, the processor 2001 is also used to:

Receive the address of the calling terminal or the called terminal of the exchange control device transmission in NAT gateway Transformational relation, in order to carry out local exchange to the calling terminal and the called terminal；Alternatively,

Wherein, the processor 2001 is also used to:

Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims

1. a kind of method of ip voice exchange characterized by comprising

Obtain the first global id information or the second global id information；

Base station and service when getting the first global id information, where the global id information to called terminal of transmission described first Gateway, so that base station and gateway where the called terminal are being judged and caller according to the described first global id information When the relationship between base station and gateway where terminal meets local exchange condition, to the calling terminal and described called Terminal carries out local exchange；

When getting the second global id information, the calling terminal or described called is notified according to the described second global id information Base station where terminal carries out local exchange to the calling terminal and the called terminal；

When the base station where called terminal is when switching to target BS, the overall situation of base station and gateway where calling terminal ID is to be sent to target BS as the base station where called terminal, in order to target BS according to where calling terminal base station and The Global ID of gateway and the calling terminal carry out local exchange；

Wherein, exchange control device notice NAT gateway reports the first global id information or the second global id information in PCRF entity It is inserted into the IP/PORT transformational relation of calling terminal when to IMS, and NAT gateway is notified to send local exchange to called terminal in IMS The IP/PORT transformational relation of called terminal is inserted into when request, the exchange control device is by the calling terminal of acquisition and is called eventually The IP/PORT transformational relation at end is sent to the base station where the calling terminal or the called terminal, in order to the master Terminal and the called terminal is made to carry out local exchange.

2. the method as described in claim 1, which is characterized in that described to obtain the first global id information or the second Global ID letter Breath, comprising:

Base station where notification strategy and charging rule functions unit (PCRF) entity report calling terminal and place gateway Global ID, and the Global ID of base station where the calling terminal received and place gateway is believed as the first Global ID Breath；Alternatively,

Base where the Global ID and called terminal of base station and place gateway where notice PCRF entity reports calling terminal It stands and the Global ID of place gateway, and by the overall situation of base station and place gateway where the calling terminal received The Global ID of ID and called terminal place base station and place gateway is as the second global id information.

3. the method as described in claim 1, which is characterized in that

Base station and gateway of the local exchange condition where the calling terminal are and where the called terminal Base station is identical with gateway；Alternatively,

The local exchange condition is the base station where the calling terminal and has between base station where the called terminal Network communications capability.

4. method according to claim 2, which is characterized in that

5. the method as described in claim 1, which is characterized in that the described first global id information that sends is to called terminal institute Base station and gateway, comprising:

6. method according to claim 2, which is characterized in that the described first global id information that sends is to called terminal institute Base station and gateway, comprising:

7. method as claimed in claim 3, which is characterized in that the described first global id information that sends is to called terminal institute Base station and gateway, comprising:

8. method as claimed in claim 4, which is characterized in that the described first global id information that sends is to called terminal institute Base station and gateway, comprising:

9. method as claimed in any one of claims 1 to 8, which is characterized in that described logical according to the described second global id information Base station where knowing the calling terminal or the called terminal carries out local friendship to the calling terminal and the called terminal It changes, comprising:

Judged according to the described second global id information base station where the calling terminal and gateway whether with the quilt Base station where being terminal is identical with gateway；

If being judged as identical, the identical base station where notifying the calling terminal and the called terminal is whole to the caller End and the called terminal carry out local exchange；

If being judged as different, further judge the base station where the calling terminal and the base station where the called terminal it Between whether have network communications capability；

If being judged as the base station and opposite end notified where the calling terminal or the called terminal with network communications capability Local exchange channel is established in base station, so that the base station where the calling terminal or the called terminal passes through the local exchange Channel carries out local exchange to the calling terminal and the called terminal.

10. method as claimed in any one of claims 1 to 8, which is characterized in that further include:

It sends the address conversion of the calling terminal or the called terminal on network address translation (NAT) gateway and is related to institute The base station where calling terminal or the called terminal is stated, it is local in order to be carried out to the calling terminal and the called terminal Exchange.

11. method as claimed in claim 9, which is characterized in that further include:

12. method as claimed in any one of claims 1 to 8, which is characterized in that further include:

When requiring supplementation with business or Lawful Interception, the base station stopping pair where the calling terminal or the called terminal is notified The calling terminal and the called terminal carry out local exchange.

13. method as claimed in claim 9, which is characterized in that further include:

14. method as claimed in claim 10, which is characterized in that further include:

15. method as claimed in claim 11, which is characterized in that further include:

16. a kind of method of ip voice exchange characterized by comprising

The exchange control device is sent first global id information or exchange judging result are received, the exchange judging result is by institute State what exchange control device was judged according to the second global id information；

When receiving the described first global id information, according to the described first global id information to calling terminal and called terminal into Row local exchange；

When receiving the exchange judging result, according to the exchange judging result to the calling terminal and the called end End carries out local exchange；

Wherein, the exchange control device notice NAT gateway reports the first global id information or the second Global ID in PCRF entity The IP/PORT transformational relation of calling terminal is inserted into when information is to IMS, and it is local to notify that NAT gateway is sent in IMS to called terminal Exchange request when be inserted into called terminal IP/PORT transformational relation, the exchange control device by the calling terminal of acquisition and by The IP/PORT transformational relation of terminal is made to be sent to the base station where the calling terminal or the called terminal, in order to institute It states calling terminal and the called terminal carries out local exchange.

17. the method described in claim 16, which is characterized in that

Second Global ID information includes Global ID and the called terminal of base station and place gateway where calling terminal The Global ID of place base station and place gateway.

18. method as claimed in claim 17, which is characterized in that it is described according to the described first global id information to the caller Terminal and the called terminal carry out local exchange, comprising:

Judged according to the described first global id information base station where the calling terminal and gateway whether with this ground It stands identical with Home serving gateway；

If being judged as different, further judge whether have between base station and the home base stations where the calling terminal Network communications capability；

If being judged as with network communications capability, local exchange channel is established with the base station where the calling terminal, with logical It crosses the local exchange channel and local exchange is carried out to the calling terminal and the called terminal.

19. method as claimed in claim 17, which is characterized in that described whole to the caller according to the exchange judging result End and the called terminal carry out local exchange, comprising:

Base station and gateway where the exchange judging result received is the calling terminal are called with described When base station where terminal is identical with gateway, local exchange is carried out to the calling terminal and the called terminal；

Base station where the exchange judging result received is the calling terminal and the base where the called terminal When there is network communications capability between standing, local exchange channel is established with the base station where the calling terminal, by described Local exchange channel carries out local exchange to the calling terminal and the called terminal.

20. method as claimed in claim 18, which is characterized in that described whole to the caller according to the exchange judging result End and the called terminal carry out local exchange, comprising:

21. such as the described in any item methods of claim 16 to 20, which is characterized in that further include:

The calling terminal or the called terminal for receiving the exchange control device transmission are in network address translation (NAT) net The address conversion relationship shut, in order to carry out local exchange to the calling terminal and the called terminal；Alternatively,

The address conversion relationship of the calling terminal or the called terminal in NAT gateway is preset, in order to the caller Terminal and the called terminal carry out local exchange.

22. method as claimed in claim 21, which is characterized in that further include:

23. such as the described in any item methods of claim 18 to 20, which is characterized in that further include:

It, will be between the calling terminal and the called terminal when the base station where the calling terminal switches to target BS Local exchange relationship switch to the target BS and the home base stations；

It, will be between the calling terminal and the called terminal when the base station where the called terminal switches to target BS Local exchange relationship switch to the base station where the target BS and the calling terminal.

24. method as claimed in claim 21, which is characterized in that further include:

25. method as claimed in claim 22, which is characterized in that further include:

26. a kind of exchange control device characterized by comprising

Sending module, for when the acquisition module gets the first global id information, sending the described first global id information To where called terminal base station and gateway so that the base station and gateway where the called terminal are according to First global id information is judged to meet local exchange condition with the base station where calling terminal and the relationship between gateway When, local exchange is carried out to the calling terminal and the called terminal；

Notification module, for when the acquisition module gets the second global id information, according to the described second global id information Base station where notifying the calling terminal or the called terminal carries out the calling terminal and the called terminal local Exchange；

Wherein, when the base station where called terminal is when switching to target BS, the base station and gateway where calling terminal Global ID be that target BS is sent to as the base station where called terminal, in order to which target BS is according to where calling terminal The Global ID and the calling terminal of base station and gateway carry out local exchange；

The notification module is also used to that NAT gateway is notified to report the first global id information or the second Global ID letter in PCRF entity It is inserted into the IP/PORT transformational relation of calling terminal when ceasing IMS, and NAT gateway is notified to send local hand over to called terminal in IMS The IP/PORT transformational relation for being inserted into called terminal when request is changed, the IP/PORT of the calling terminal of acquisition and called terminal is converted Relationship is sent to the base station where the calling terminal or the called terminal, in order to the calling terminal and described called Terminal carries out local exchange.

27. device as claimed in claim 26, which is characterized in that the acquisition module includes:

First notice reporting unit reports calling terminal place for notification strategy and charging rule functions unit (PCRF) entity The Global ID of base station and place gateway, and by the complete of base station where the calling terminal received and place gateway Office ID is as the first global id information；

Second notice reporting unit, the overall situation for base station and place gateway where notifying PCRF entity to report calling terminal The Global ID of base station and place gateway where ID and called terminal, and by base where the calling terminal received It stands complete as second with the Global ID of base station and place gateway where the Global ID of place gateway and called terminal Office's id information.

28. device as claimed in claim 26, which is characterized in that

29. device as claimed in claim 27, which is characterized in that

30. device as claimed in claim 26, which is characterized in that the sending module includes:

Adding unit is created, is added to the local friendship for creating local exchange request, and by the described first global id information Change request；

Request transmitting unit, for send local exchange request to where the called terminal base station and gateway.

31. device as claimed in claim 27, which is characterized in that the sending module includes:

32. device as claimed in claim 28, which is characterized in that the sending module includes:

33. device as claimed in claim 29, which is characterized in that the sending module includes:

34. such as the described in any item devices of claim 26 to 33, which is characterized in that the notification module includes:

First judging unit, for judging base station and service network where the calling terminal according to the described second global id information Close whether with where the called terminal base station and gateway it is identical；

Crosspoint is notified to notify the calling terminal and the quilt if being judged as identical for first judging unit Identical base station where being terminal carries out local exchange to the calling terminal and the called terminal；

Second judgment unit further judges the calling terminal institute if being judged as different for first judging unit Base station and the called terminal where base station between whether have network communications capability；

Notice establishes unit, if being judged as the second judgment unit with network communications capability, notifies the caller Local exchange channel is established in base station and opposite end base station where terminal or the called terminal, so that the calling terminal or described Base station where called terminal carries out local friendship to the calling terminal and the called terminal by the local exchange channel It changes.

35. such as the described in any item devices of claim 26 to 33, which is characterized in that further include:

Transformational relation sending module, for sending the calling terminal or the called terminal in network address translation (NAT) net The address conversion shut is related to the base station where the calling terminal or the called terminal, in order to the calling terminal Local exchange is carried out with the called terminal.

36. device as claimed in claim 34, which is characterized in that further include:

37. such as the described in any item devices of claim 26 to 33, which is characterized in that further include:

Notice stops Switching Module, for when requiring supplementation with business or Lawful Interception, notifying the calling terminal or the quilt Base station where being terminal stops carrying out local exchange to the calling terminal and the called terminal.

38. device as claimed in claim 34, which is characterized in that further include:

39. device as claimed in claim 35, which is characterized in that further include: notice stops Switching Module, needs to mend for working as When filling business or Lawful Interception, the base station where notifying the calling terminal or the called terminal stops to the calling terminal Local exchange is carried out with the called terminal.

40. device as claimed in claim 36, which is characterized in that further include: notice stops Switching Module, needs to mend for working as When filling business or Lawful Interception, the base station where notifying the calling terminal or the called terminal stops to the calling terminal Local exchange is carried out with the called terminal.

41. a kind of base station characterized by comprising

Receiving module, the first global id information or exchange judging result for receiving exchange control device transmission, the exchange Judging result is to be judged by the exchange control device according to the second global id information；

First local switching module, for when receiving the described first global id information, according to the described first global id information Local exchange is carried out to calling terminal and called terminal；

Second local switching module, for when receiving the exchange judging result, according to the exchange judging result to institute It states calling terminal and the called terminal carries out local exchange；

42. base station as claimed in claim 41, which is characterized in that

43. base station as claimed in claim 42, which is characterized in that first local switching module includes:

First local judging unit, for judging the base station kimonos where the calling terminal according to the described first global id information Whether business gateway is identical as home base stations and Home serving gateway；

First crosspoint, if being judged as identical for the described first local judging unit, to the calling terminal and described Called terminal carries out local exchange；

Second local judging unit further judges the master if being judged as different for the described first local judging unit It cries the base station where terminal and whether there is network communications capability between the home base stations；

First establishing unit, if being judged as the described second local judging unit with network communications capability, with the master Local exchange channel is established in base station where being terminal, with by the local exchange channel to the calling terminal and the quilt Terminal is made to carry out local exchange.

44. base station as claimed in claim 42, which is characterized in that second local switching module includes:

Second crosspoint, for working as base station and service of the exchange judging result received where the calling terminal Gateway with the base station where the called terminal and when identical gateway, to the calling terminal and the called terminal into Row local exchange；

Second establishes unit, for where the exchange judging result that receive is the calling terminal base station with it is described When there is network communications capability between base station where called terminal, local exchange is established with the base station where the calling terminal Channel, to carry out local exchange to the calling terminal and the called terminal by the local exchange channel.

45. base station as claimed in claim 43, which is characterized in that second local switching module includes:

46. such as the described in any item base stations of claim 41 to 45, which is characterized in that further include:

Transformational relation receiving module, the calling terminal or the called terminal sent for receiving the exchange control device Address conversion relationship on network address translation (NAT) gateway, in order to the calling terminal and the called terminal into Row local exchange；

Presetting module, for presetting the address conversion relationship of the calling terminal or the called terminal in NAT gateway, so as to In to the calling terminal and called terminal progress local exchange.

47. such as the described in any item base stations of claim 43 to 44, which is characterized in that further include:

First switching module, for when the base station where the calling terminal switches to target BS, by the calling terminal Local exchange relationship between the called terminal switches to the target BS and the home base stations；

Second switching module, for when the base station where the called terminal switches to target BS, by the calling terminal Local exchange relationship between the called terminal switches to the base station where the target BS and the calling terminal.

48. base station as claimed in claim 45, which is characterized in that further include:

49. base station as claimed in claim 46, which is characterized in that further include:

50. a kind of computer storage medium, which is characterized in that

The computer storage medium can be stored with program, include as described in any one of claim 1 to 15 when which executes The step of.

51. a kind of computer storage medium, which is characterized in that

The computer storage medium can be stored with program, include as described in any one of claim 16 to 25 when which executes The step of.

52. a kind of exchange control device characterized by comprising processor, communication interface and memory, wherein

The memory is for storing program；

The processor is for executing described program, to realize the described in any item methods of claim 1 to 15.

53. a kind of base station characterized by comprising processor, communication interface and memory, wherein

The memory is for storing program；

The processor is for executing described program, to realize the described in any item methods of claim 16 to 25.