CN101159905B - Local exchange method, core network equipment and network system of implementing in base station controller - Google Patents
Local exchange method, core network equipment and network system of implementing in base station controller Download PDFInfo
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Abstract
The invention discloses a method of realizing local exchange in a base station controller, which includes: a core network side judges whether a first user equipment and a second user equipment locate under the same base station controller; if yes, send local exchange message to the base station control; the local exchange message includes: local exchange orders, the first user equipment mark and the second user equipment mark; after receiving the local exchange orders, the base station controller performs local exchange on the data between the first user equipment and the second user equipment. The invention also discloses a corresponding core network equipment and a network system. The technical proposal provided by the invention can reduce user plane data exchange time delay among user equipments under the same base station controller and at the same time, save the bandwidth between the base station controller and the core network.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method, equipment of the core network and network system that in base station controller, realizes local exchange.
Background technology
Universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) be the consensus standard of the 3-G (Generation Three mobile communication system) of 3GPP appointment, the UMTS network comprises: core net (Core Network, CN), UMTS Terrestrial radio access network (UMTS Terrestrial Radio AccessNetwork, UTRAN) and subscriber equipment (UE, User Equipment).Wherein, (Radio Network Controller RNC) forms with NodeB UTRAN by radio network controller.Core net CN is from being divided into packet-switched domain (PS) and circuit commutative field (CS) in logic, and the CS territory is the circuit switched core network of UMTS, is used for the support voice business; The PS territory is the Packet Service core net of UMTS, is used to support Packet data service and some multimedia services.Circuit commutative field is by (the Mobile Switch Center of mobile switching centre, MSC) etc. equipment constitutes, packet-switched domain is by Serving GPRS Support Node (Serving GPRS Support Node, SGSN), (GatewayGPRS Support Node GGSN) waits equipment to constitute to Gateway GPRS Support Node.Wherein, the interface between RNC and core net CS territory is an Iu-CS interface, and the interface between core net PS territory is an Iu-PS interface.
The call flow in UMTS system CS territory comprises the steps: in the prior art
(Radio ResourceController RRC) connects to set up Radio Resource control between step 101, calling UE and the RNC1.
Step 102, calling UE are set up request message to RNC1 initiation business.
Step 103, RNC1 set up request message to MSC transmission business.
Step 104, MSC send RAB RAB (Radio Access Bearer) assignment message (RAB ASSIGNMENT) to RNC1.
Step 105, RNC1 are that calling UE is set up the Iu User Plane carrying.
Step 106, RNC1 reply RAB assignment response message to CN.
Step 107, MSC paging called UE.
Step 108, called UE send page-response message to MSC, and the Iu interface connects to be set up.
Step 109, MSC send the RAB assignment request message to RNC2.
Step 110, RNC2 are that called UE is set up the Iu User Plane carrying.
Step 111, RNC2 reply RAB assignment response message to CN.
Called UE and calling UE are carried out exchanges data by MSC subsequently.
The business datum of UMTS system PS territory UE generally could arrive the server of internet in the prior art through three equipment.These three equipment are respectively: RNC, SGSN and GGSN.Therefore, the exchange of the business datum of communicating pair needs by RNC, core net.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
In the prior art, be that UMTS system CS territory business or PS territory business all will be passed through core net, if but communicating pair all is positioned under the same RNC, user face data exchange between its communicating pair is unnecessary through core net, caused very big time delay, caused also simultaneously that the unnecessary of bandwidth takies between RNC and core net.
What deserves to be explained is, the above technical problem that in the UMTS system, occurs, at global system for mobile communications (Global System for Mobile communications, GSM), code division multiple access inserts that (CodeDivision Multiple Access CDMA) exists in the communication system such as 2000 systems equally.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of method, equipment of the core network and network system that realizes local exchange in base station controller, can reduce the time delay of the user face data exchange between the subscriber equipment under the same base station controller, also save the bandwidth between base station controller and core net simultaneously.
In view of this, the embodiment of the invention provides:
A kind of method that realizes local exchange in base station controller comprises:
Core-network side judges whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, send the message of carrying local exchange message to described base station controller, described local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification;
Described base station controller carries out this locality exchange to the data between described first subscriber equipment and described second subscriber equipment after receiving described local exchange indication in described base station controller.
A kind of equipment of the core network comprises:
First judging unit is used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller;
Transmitting element, be used for when the judged result of described first judging unit when being, send the message of carrying local exchange message to described base station controller, described local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification.
A kind of network system comprises: base station controller, and equipment of the core network, wherein,
Described equipment of the core network, be used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, send the message of carrying local exchange message to described base station controller, described local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification;
Described base station controller, be used to receive described local exchange indication after, in described base station controller, the data between described first subscriber equipment and described second subscriber equipment are carried out this locality and exchange.
A technical scheme in the technique scheme has following beneficial effect:
The embodiment of the invention is by judging in core-network side whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, the informing base station controller carries out this locality exchange to the data between this first subscriber equipment and second subscriber equipment, user face data exchange between the subscriber equipment under the same base station controller is not needed through core net, directly carry out this locality exchange, avoid the caused time delay of the exchange of the user face data between the subscriber equipment under same base station controller need process core net in the prior art, also save bandwidth between base station controller and core net simultaneously.
Description of drawings
The call flow diagram in the UMTS system CS territory that Fig. 1 provides for prior art;
Realize the method flow diagram of local exchange in the base station controller that Fig. 2 is provided for the embodiment of the invention one;
Realize the method flow diagram of local exchange in the base station controller that Fig. 3 is provided for the embodiment of the invention two;
Fig. 4 follows the migration flow chart for UE in the UMTS CS territory that the embodiment of the invention provided strides the RNC switching;
Fig. 5 follows the migration flow chart for UE in the UMTS PS territory that the embodiment of the invention provided strides the RNC switching;
The equipment of the core network structure chart that Fig. 6 is provided for the embodiment of the invention three;
The equipment of the core network structure chart that Fig. 7 is provided for the embodiment of the invention four;
The network architecture figure that Fig. 8 is provided for the embodiment of the invention five;
The network architecture figure that Fig. 9 is provided for the embodiment of the invention six.
Embodiment
The embodiment of the invention provides a kind of method that realizes local exchange in base station controller, comprise: core-network side judges whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, send local exchange message to base station controller, local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification; Base station controller carries out this locality exchange to the data between first subscriber equipment and second subscriber equipment after receiving local exchange indication in base station controller.Wherein, described base station controller can be RNC or BSC (Base Station Controller).
Consult Fig. 2, the embodiment of the invention one provides the method that realizes local exchange in a kind of base station controller, go for UMTS CS territory business, the calling UE and the exchange of the user face data between called UE that are positioned under the same RNC are realized in this locality, below be that voice call is that example describes with this CS territory business, this method specifically comprises:
(Radio ResourceController RRC) connects to set up Radio Resource control between step 201, calling UE and the RNC.
Step 202, calling UE are set up request message to RNC initiation business.
Step 203, RNC set up request message to MSC transmission business.
Step 204, MSC send RAB RAB (Radio Access Bearer) assignment message (RAB ASSIGNMENT) to RNC.
Step 205, RNC initiate to set up the Iu User Plane carrying of calling UE.
Step 206, RNC reply RAB assignment response message to CN.
Step 207, MSC paging called UE.
Step 208, called UE send page-response message to MSC.
Step 209, MSC judge calling UE and called UE whether under same RNC, if, execution in step 210, if not, follow-up flow process is same as the prior art, process ends.
Step 210, MSC judge whether the speech encoding rate of calling UE and called UE is identical, if inequality, first execution in step 211, execution in step 212 afterwards, if identical, direct execution in step 212.
Step 211, the speech encoding rate of calling UE and called UE is adjusted into identical, such as first speech encoding rate.
Step 212, MSC send RAB RAB assignment message to RNC, carry local exchange message in this message, and local exchange message comprises: local exchange indication (Local Switch), calling identification, called identification.When the speech encoding rate of calling UE and called UE is inequality, also carry in this RAB RAB assignment message: adjust first speech encoding rate that obtains.
Wherein, calling identification comprises: permanent, Non-Access Stratum user ID (Permanent NAS UEidentify) and/or casual user's sign (Temporary UE ID); Called identification comprises: permanent, Non-Access Stratum user ID (Permanent NAS UE identify) and/or casual user's sign (TemporaryUE ID).Wherein, above-mentioned permanent, Non-Access Stratum user ID can be International Mobile Subscriber Identity (International Mobile Station Identity, IMSI); Above-mentioned casual user's sign can be TMSI (Temp Mobile Subscriber Identify).
User plane bearer between step 213, RNC foundation and calling UE; User plane bearer between foundation and called UE.
When having carried first speech encoding rate in the RAB RAB assignment message in the step 212, RNC in this step need be according to first speech encoding rate, user plane bearer between foundation and calling UE, and the user plane bearer between foundation and called UE.
If MSC judges when the speech encoding rate that obtains calling UE and called UE is identical in the above-mentioned steps 210, can carry this identical speech encoding rate in the RAB assignment message in step 212, RNC is according to this identical speech encoding rate in this step 213, user plane bearer between foundation and calling UE, and the user plane bearer between foundation and called UE.
Step 214, RNC configuration calling UE data forwarding addresses are the addresses of called UE; Configuration called UE data forwarding addresses is the address of calling UE.
Step 215, RNC receive the data from calling UE.
Step 216, RNC be according to calling UE forwarding of data address, will be from the data forwarding of calling UE to called UE.
Step 217, RNC receive the data from called UE.
Step 218, RNC be according to called UE forwarding of data address, will be from the data forwarding of called UE to calling UE.
Wherein, step 215,216, with step 217,218 be coordination, do not limit the sequencing of its execution.
After step 209 or step 212, this method can also comprise: be released to the Iu mouth user plane bearer that calling UE is set up.
In the foregoing description one, calling UE can be used as first subscriber equipment, and called UE is as second subscriber equipment, and perhaps calling UE is as second subscriber equipment, and called UE does not influence realization of the present invention as first subscriber equipment.
Above-mentioned base station controller can adopt adaptive multi-rate coding (Adaptive Multi-RateCoding, AMRC) technology, AMRC is according to network condition, can adjust the speech encoding rate of calling UE and called UE, the speech encoding rate that will be used for setting up with first subscriber equipment and second subscriber equipment user plane bearer makes second speech encoding rate into, thereby guarantees that with only speed the speech quality of voice reaches optimum.Wherein, the speech encoding rate that is used for setting up with first subscriber equipment and second subscriber equipment user plane bearer can be: the speech encoding rate that above-mentioned first subscriber equipment is identical with second subscriber equipment, first speech encoding rate that perhaps above-mentioned adjustment obtains.Base station controller is again according to second speech encoding rate, set up with first subscriber equipment between user plane bearer, the user plane bearer between the foundation and second subscriber equipment.Illustrate: first speech encoding rate that supposition MSC adjusts calling UE and called UE is 64kbps, when inserting more subscriber equipment in the network, base station controller is according to the network actual conditions, utilize the AMRC technology that the speech encoding rate of 64kbps is reduced to 12.2kbps (can be used as second speech encoding rate), guarantee that with only speed the speech quality of voice reaches optimum.Wherein, base station controller also can utilize wideband adaptive multi-rate coding technology (Wide-band Adaptivecoder With Multiple Rates), the speech encoding rate that will be used for setting up with first subscriber equipment and second subscriber equipment user plane bearer makes second speech encoding rate into, does not influence realization of the present invention.
In existing network, under some situation, need monitor the calling in CS territory, assign snoop command by the listening center of core-network side and give MSC, MSC starts call monitoring, and the specified user's of described snoop command call business all is sent to listening center.Because in the embodiment of the invention, calling both sides is carried out local exchange in base station controller, no longer passes through core net, therefore can not monitor the calling both sides of carrying out local exchange.If desired the calling of certain special subscriber equipment is monitored, the sign (such as Subscriber Number) that this subscriber equipment can be set on MSC is not for starting special user's device identification of local exchange, judge by MSC whether calling UE and called UE can both start local exchange, judge just whether the sign of calling UE and the sign of called UE are the customer equipment identifications that does not start local exchange, if any can not start local exchange in calling UE and the called UE, do not comprise local exchange message in the RAB assignment message in the above-mentioned steps 212, calling UE and called UE are carried out exchanges data by MSC, if calling UE and called UE can both start local exchange, continue execution in step 212.
MSC has the address field that is used to set up user plane bearer that RAB distributes usually in the RAB assignment message that RNC sends in the invention described above embodiment one step 212, can ignore RAB addresses distributed field for the embodiment of the invention, no longer be the called IU mouth user plane bearer of setting up.
The embodiment of the invention two provides a kind of method of local exchange, go for UMTS PS territory business, be used to support Packet data service and some multimedia services, make the UE and the exchange of the user face data between the 2nd UE that are positioned under the same RNC realize that in this locality this method specifically comprises:
Step 301, be positioned at following time of same SGSN, send local exchange query messages to SGSN when GGSN determines a UE and the 2nd UE.
Step 302, SGSN judge whether a UE and the 2nd UE are positioned under the same RNC after receiving local exchange query messages, if, execution in step 303.If not, follow-up flow process is same as the prior art, process ends.
Step 303, SGSN send the RAB assignment message to RNC, carry local exchange message in this message, and local exchange message comprises: local exchange indication (Local Switch), the sign of a UE and the sign of the 2nd UE.
It is the address of the 2nd UE that step 304, RNC dispose a UE data forwarding addresses; Disposing the 2nd UE data forwarding addresses is the address of a UE.
Step 305, RNC receive the data from a UE.
Step 306, RNC will be from data forwarding to the two UE of a UE according to a UE data forwarding addresses.
Step 307, RNC receive the data from the 2nd UE.
Step 308, RNC will be from data forwarding to the UE of the 2nd UE according to the 2nd UE forwarding of data address.
Because before step 301, a UE and the 2nd UE have set up the PS business, be that a UE and the 2nd UE have set up IU mouth user plane bearer therefore; Therefore, this method can also comprise: be released to the Iu mouth user plane bearer that calling UE is set up, be released to the Iu mouth user plane bearer that called UE is set up.
UE be connected with RRC between the UTRAN set up successfully after, UE by RNC set up with CN between signaling is connected, (Non-Access Stratum, NAS) signaling connection is used for mutual NAS information, as authentication etc. also to be Non-Access Stratum.Above-mentioned two embodiment still keep UE to be connected with NAS signaling between CN, and the Non-Access Stratum signaling is still handled by core net.
If a subscriber equipment carries out the professional and PS territory business in CS territory simultaneously, the technical scheme that can be provided according to the embodiment of the invention one and the embodiment of the invention two is respectively handled; For the business in CS territory, if carry out this locality exchange, MSC carries local exchange message in the RAB RAB assignment message that RNC sends in step 212; For the business in PS territory, if carry out this locality exchange, SGSN carries local exchange message in the RAB assignment message that RNC sends in step 303.
A UTRAN can comprise that (Radio NetworkSubsystem, RNS), and a RNS comprises one or more RNS: base station node B and RNC.If used the Radio Resource that surpasses a RNS in being connected an of UE and UTRAN, these RNC that relate to have two independently logic functions so:
1, Serving RNC (SRNC): the wireless connections between management UE and the UTRAN are the terminating points corresponding to the Iu interface of this UE.The parameter maps of RAB to the parameter of transmission channel, whether carry out basic RRMs such as handover, open Loop Power control and all finish by SRNC.A UE who links to each other with UTRAN has and can only have a SRNC.
2, Drift Radio Network Controller (DRNC): the soft handover between RNC needs second RNC to participate in, and this RNC is called DRNC for UE provides resource;
Usually the function that in the RNC of reality, has comprised SRNC and DRNC.
The introduction of the invention described above embodiment one has realized purpose of the present invention, in RNC, carry out in the process of local exchange for calling UE and called UE that the embodiment of the invention one is provided, when wherein a side strides the RNC switching, local exchange can not be carried out again, Fig. 4 shows in the UMTS CS territory UE and strides RNC and switch and follow the migration flow chart, suppose that calling UE strides RNC and switch, handoff procedure specifically comprises:
Step 401, calling UE send measurement report to Serving RNC (SRNC).
Step 402, SRNC know that according to measurement report the calling UE needs adjourn other RNC outward, and local exchange can not be carried out again, and SRNC is that calling UE is set up IU mouth user plane bearer; For called UE is set up IU mouth user plane bearer.
SRNC can set up IU mouth user plane bearer for calling UE in this step, does not influence realization of the present invention.Set up IU mouth user plane bearer if SRNC is a calling UE, follow-up switch step is identical with existing standard, helps and the existing standard compatibility.
Can also comprise in this step: it is the address of MSC that SRNC changes the 2nd UE forwarding of data address.
Step 403, SRNC send migration request (Relocation Required) message to MSC.
Step 404, MSC send a notification message to Drift Radio Network Controller (DRNC) and carry out the migration preparation with notice DRNC, promptly notify DRNC to prepare resource requirement.
Step 405, the required resource of DRNC notice MSC migration are ready to.
Step 406, MSC send migration to SRNC and specify (Relocation Command), and notice SRNC can move.
Follow-up SRNC migration calling UE, calling UE successfully inserts Target RNC.The operation exchange of calling UE and called UE is undertaken by MSC.
Suppose that called UE needs outer other RNC of adjourning, the disposition that need outer adjourn other RNC with calling UE is similar, difference is: SRNC need set up IU mouth user plane bearer for calling UE in step 402, can set up IU mouth user plane bearer for called UE, can not set up IU mouth user plane bearer yet, do not influence realization of the present invention for called UE.
If in the embodiment of the invention one, adopted the AMRC technology that the speech encoding rate of calling UE and called UE is become second speech encoding rate, SRNC need send Iu interface User Agreement (IUUP) speed of carrying second speech encoding rate to MSC and adjust message after step 402, carries this second speech encoding rate in the notification message in step 404.
The introduction of the invention described above embodiment two has realized purpose of the present invention, and the UE and the 2nd UE that are provided for the embodiment of the invention two carry out in RNC in the process of local exchange, and when wherein a side strode the RNC switching, local exchange can not be carried out again.Fig. 5 shows in the UMTS PS territory UE and strides RNC and switch and follow the migration flow chart, supposes that a UE strides RNC and switches, and handoff procedure specifically comprises:
Step 501, a UE send measurement report to SRNC.
Step 502, SRNC know that according to measurement report a UE will adjourn other RNC outward, and local exchange can not be carried out again, and SRNC is that a UE sets up IU mouth user plane bearer; Be that the 2nd UE sets up IU mouth user plane bearer.
SRNC can set up IU mouth user plane bearer for a UE in this step, does not influence realization of the present invention.Set up IU mouth user plane bearer if SRNC is a UE, follow-up switch step is identical with existing standard, helps and the existing standard compatibility.
Can also comprise in this step: it is the address of SGSN that SRNC changes the 2nd UE forwarding of data address.
Step 503, SRNC send migration request (Relocation Required) message to SGSN.
Step 504, SGSN notice DRNC carry out migration and prepare, and promptly notify DRNC to prepare resource requirement.
Step 505, the required resource of DRNC notice SGSN migration are ready to.
Step 506, SGSN send migration to SRNC and specify (Relocation Command), and notice SRNC can move.
Follow-up SRNC moves a UE, and a UE successfully inserts Target RNC.Operation exchange between the one UE and the 2nd UE is undertaken by SGSN, GGSN.
The method that realizes local exchange in the base station controller that the invention described above embodiment provided is not only applicable to the UMTS network system, also be applicable to other network systems, such as at global system for mobile communications (GlobalSystem For Mobile Communication, GSM) in, in BSC, realize local exchange, to realize purpose of the present invention.In cdma system, in BSC, realize local exchange, to realize purpose of the present invention.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, for example, read-only memory, disk or CD etc.
Consult Fig. 6, the embodiment of the invention three provides a kind of equipment of the core network, and this equipment of the core network can be MSC, comprising:
First judging unit 601 is used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller;
Transmitting element 602, be used for when the judged result of first judging unit 601 when being, send the message of carrying local exchange message to base station controller, this this locality exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification.
This equipment of the core network also comprises: second judging unit 603,
This equipment of the core network also comprises: the 3rd judging unit 604, and voice rate adjustment unit 605,
The 3rd judging unit 604, be used for when the judged result of first judging unit 601 for being, and the judged result of second judging unit 603 is that first subscriber equipment judges whether the speech encoding rate of first subscriber equipment and second subscriber equipment identical can both start local the exchange with second subscriber equipment time;
Voice rate adjustment unit 605 is used in the judged result of the 3rd judging unit 604 for not the time, and the speech encoding rate of first subscriber equipment and second subscriber equipment is adjusted into the first identical speech encoding rate; Transmitting element 602 also carries in the message of carrying local exchange message that base station controller sends: adjust first speech encoding rate that obtains.
Consult Fig. 7, the embodiment of the invention four provides a kind of equipment of the core network, and this equipment of the core network can be SGSN, comprising:
First judging unit 701 is used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller;
Transmitting element 702, be used for when the judged result of first judging unit 701 when being, send the message of carrying local exchange message to base station controller, this this locality exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification.
This equipment of the core network also comprises: receiving element 703,
Receiving element 703 is used to receive this locality exchange query messages that GGSN sends; First judging unit 701 after receiving described local exchange query messages, judges whether described first subscriber equipment and second subscriber equipment are positioned under the same base station controller.
Consult Fig. 8, the embodiment of the invention five provides a kind of network system, and this system comprises: base station controller, and as the MSC of equipment of the core network, wherein,
MSC, be used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, sending the message of carrying local exchange message to base station controller, local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification;
Base station controller, be used to receive local exchange indication after, in base station controller, the data between first subscriber equipment and second subscriber equipment are carried out this locality and exchange.
This MSC is used to also judge whether first subscriber equipment and second subscriber equipment can both start local exchange, if first subscriber equipment and second subscriber equipment can both start local exchange, continues to carry out to base station controller sending the message of carrying local exchange message.
This MSC also is used for working as first subscriber equipment and second subscriber equipment all is positioned under the same base station controller, and when first subscriber equipment and second subscriber equipment can both start local the exchange, judge whether first subscriber equipment is identical with the speech encoding rate of second subscriber equipment, if inequality, the speech encoding rate of first subscriber equipment and second subscriber equipment is adjusted into the first identical speech encoding rate; Also carry in the above-mentioned message of carrying local exchange message and adjust first speech encoding rate that obtains;
Base station controller, if also be used for receiving first speech encoding rate that described adjustment obtains, first speech encoding rate that obtains according to described adjustment, set up and first subscriber equipment between user plane bearer, and and second subscriber equipment between user plane bearer; Otherwise, the speech encoding rate identical with second subscriber equipment according to first subscriber equipment, set up and first subscriber equipment between user plane bearer, and and second subscriber equipment between user plane bearer.
Consult Fig. 9, the embodiment of the invention six provides a kind of network system, and this system comprises: base station controller, and as the SGSN of equipment of the core network, GGSN,
GGSN is used for sending local exchange query messages to SGSN;
SGSN, be used for after receiving local exchange query messages, judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, send the message of carrying local exchange message to base station controller, local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification;
Base station controller, be used to receive local exchange indication after, in base station controller, the data between first subscriber equipment and second subscriber equipment are carried out this locality and exchange.
As seen from the above analysis, the embodiment of the invention has following beneficial effect:
1, the embodiment of the invention is by judging in core-network side whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, the informing base station controller carries out this locality exchange to the data between this first subscriber equipment and second subscriber equipment, user face data exchange between the subscriber equipment under the same base station controller is not needed through core net, directly carry out this locality exchange, avoid the caused time delay of the exchange of the user face data between the subscriber equipment under same base station controller need process core net in the prior art, also save bandwidth between base station controller and core net simultaneously.
2, the embodiment of the invention is by judging in core-network side whether first subscriber equipment and second subscriber equipment can both start local exchange, if first subscriber equipment and second subscriber equipment can both start local exchange, just the informing base station controller carries out this locality exchange to the data between this first subscriber equipment and second subscriber equipment, if any can not start local exchange among first subscriber equipment and second subscriber equipment, just exchange user face data between first subscriber equipment and second subscriber equipment, do not influence core-network side some specific user's calling is monitored by core net.
3, the base station controller in the embodiment of the invention can adopt adaptive multi-rate coding AMRC or wideband adaptive multi-rate coding technology, according to network condition, speech encoding rate to calling UE and called UE is adjusted, thereby guarantees that with only speed the speech quality of voice reaches optimum.
4, in the embodiment of the invention, at user in the local exchange process scene that cross base station controller switches taking place, the solution of recovering normal exchanging mechanism is provided, has guaranteed to exchange to from this locality carrying out continuously of communicating by letter the normal exchange process.
More than a kind of method, equipment of the core network and network system of local exchange of realizing in base station controller provided by the present invention is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (17)
1. a method that realizes local exchange in base station controller is characterized in that, comprising:
Core-network side judges whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, send the message of carrying local exchange message to described base station controller, described local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification;
Described base station controller carries out this locality exchange to the data between described first subscriber equipment and described second subscriber equipment after receiving described local exchange indication in described base station controller.
2. method according to claim 1 is characterized in that,
Described core-network side is judged whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller and is comprised:
Moving exchanging center MSC judges whether described first subscriber equipment and described second subscriber equipment are positioned under the same base station controller.
3. method according to claim 1 is characterized in that,
Described core-network side is judged whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller and is comprised:
Serving GPRS Support Node SGSN judges whether described first subscriber equipment and described second subscriber equipment are positioned under the same base station controller after receiving this locality exchange query messages of Gateway GPRS Support Node GGSN transmission.
4. method according to claim 2 is characterized in that,
Before carrying the message of local exchange message to described base station controller transmission, this method also comprises:
Described MSC judges whether described first subscriber equipment and described second subscriber equipment can both start local exchange, if described first subscriber equipment and described second subscriber equipment can both start local exchange, continue to carry out the step that sends the message of carrying local exchange message to described base station controller.
5. method according to claim 2 is characterized in that,
This method also comprises:
Described MSC judges whether described first subscriber equipment is identical with the speech encoding rate of described second subscriber equipment, if, base station controller is according to this identical speech encoding rate, set up and described first subscriber equipment between user plane bearer, and and described second subscriber equipment between user plane bearer; If not, the speech encoding rate with described first subscriber equipment and second subscriber equipment is adjusted into the first identical speech encoding rate;
The described message of carrying local exchange message that sends to base station controller also comprises: first speech encoding rate that described adjustment obtains;
First speech encoding rate that described base station controller obtains according to described adjustment, set up and described first subscriber equipment between user plane bearer, and and described second subscriber equipment between user plane bearer.
6. method according to claim 5 is characterized in that,
This method also comprises:
Described base station controller is according to network condition, the speech encoding rate that will be used for setting up with first subscriber equipment and second subscriber equipment user plane bearer changes second speech encoding rate into, according to described second speech encoding rate, set up and described first subscriber equipment between user plane bearer, and and described second subscriber equipment between user plane bearer.
7. method according to claim 6 is characterized in that,
This method also comprises:
Described base station controller knows that first subscriber equipment need move out behind the described base station controller, sends the Iu interface User Agreement IUUP speed of carrying described second speech encoding rate to described MSC and adjusts message;
Described MSC sends the notification message that carries described second speech encoding rate to described first subscriber equipment target base station controller to be moved.
8. according to each described method of claim 1 to 7, it is characterized in that,
This method also comprises:
Described base station controller knows that first subscriber equipment need move out behind the described base station controller, for described second subscriber equipment is set up Iu mouth user plane bearer.
9. according to each described method of claim 1 to 7, it is characterized in that,
In described base station controller the data between described first subscriber equipment and described second subscriber equipment being carried out this locality exchange is specially:
Forwarding address according to receiving first customer equipment data that local exchange indication back is disposed will send to second subscriber equipment from the data of first subscriber equipment; Forwarding address according to receiving second customer equipment data that local exchange indication back is disposed will send to described first subscriber equipment from the data of second subscriber equipment; Wherein, the forwarding address of described first customer equipment data is the address of described second subscriber equipment, and the forwarding address of described second customer equipment data is the address of described first subscriber equipment.
10. an equipment of the core network is characterized in that, comprising:
First judging unit is used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller;
Transmitting element, be used for when the judged result of described first judging unit when being, send the message of carrying local exchange message to described base station controller, described local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification.
11. equipment of the core network according to claim 10 is characterized in that,
Described equipment of the core network also comprises: second judging unit,
Described second judging unit is used to judge whether described first subscriber equipment and described second subscriber equipment can both start local exchange;
Described transmitting element, be used for working as the judged result of described first judging unit for being, and the judged result of described second judging unit is first subscriber equipment and second subscriber equipment can both start local exchange the time, sends the message of carrying local exchange message to described base station controller.
12. according to claim 10 or 11 described equipments of the core network, it is characterized in that,
Described equipment of the core network also comprises:
The 3rd judging unit, be used for when the judged result of described first judging unit when being, judge whether the speech encoding rate of described first subscriber equipment and described second subscriber equipment identical;
The voice rate adjustment unit is used in the judged result of described the 3rd judging unit for not the time, and the speech encoding rate of described first subscriber equipment and second subscriber equipment is adjusted into the first identical speech encoding rate;
Described transmitting element also carries in the message of carrying local exchange message that described base station controller sends: first speech encoding rate that described adjustment obtains.
13. equipment of the core network according to claim 10 is characterized in that,
Described equipment of the core network also comprises: receiving element,
Described receiving element is used to receive this locality exchange query messages that GGSN sends;
Described first judging unit is used for judging whether described first subscriber equipment and second subscriber equipment are positioned under the same base station controller after receiving described local exchange query messages.
14. a network system is characterized in that, comprising: base station controller, equipment of the core network, wherein,
Described equipment of the core network, be used to judge whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if, send the message of carrying local exchange message to described base station controller, described local exchange message comprises: local exchange indication, first customer equipment identification and second customer equipment identification;
Described base station controller, be used to receive described local exchange indication after, in described base station controller, the data between described first subscriber equipment and described second subscriber equipment are carried out this locality and exchange.
15. network system according to claim 14 is characterized in that,
Described equipment of the core network is MSC;
Described MSC, be used to also judge whether described first subscriber equipment and described second subscriber equipment can both start local exchange, if described first subscriber equipment and described second subscriber equipment can both start local exchange, continue to carry out sending the message of carrying local exchange message to described base station controller.
16. according to claim 14 or 15 described network systems, it is characterized in that,
Described equipment of the core network, be used to also judge whether described first subscriber equipment is identical with the speech encoding rate of described second subscriber equipment, if inequality, the speech encoding rate of described first subscriber equipment and second subscriber equipment is adjusted into the first identical speech encoding rate; Also carry described in the described message of carrying local exchange message: adjust first speech encoding rate that obtains;
Described base station controller, if also be used for receiving first speech encoding rate that described adjustment obtains, first speech encoding rate that obtains according to described adjustment, set up and described first subscriber equipment between user plane bearer, and and described second subscriber equipment between user plane bearer; Otherwise, according to first subscriber equipment and the identical speech encoding rate of described second subscriber equipment, set up and described first subscriber equipment between user plane bearer, and and described second subscriber equipment between user plane bearer.
17. network system according to claim 14 is characterized in that,
Described equipment of the core network is SGSN;
Described network system also comprises: GGSN,
Described GGSN is used for sending local exchange query messages to described SGSN;
Described SGSN is used for judging whether first subscriber equipment and second subscriber equipment are positioned under the same base station controller, if send the message of carrying local exchange message to described base station controller after receiving described local exchange query messages.
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| CN2007101661177A CN101159905B (en) | 2007-11-07 | 2007-11-07 | Local exchange method, core network equipment and network system of implementing in base station controller |
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| CN2007101661177A CN101159905B (en) | 2007-11-07 | 2007-11-07 | Local exchange method, core network equipment and network system of implementing in base station controller |
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