CN101505509B - Resource reservation implementing method and interconnection network element - Google Patents
Resource reservation implementing method and interconnection network element Download PDFInfo
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- CN101505509B CN101505509B CN2009101280916A CN200910128091A CN101505509B CN 101505509 B CN101505509 B CN 101505509B CN 2009101280916 A CN2009101280916 A CN 2009101280916A CN 200910128091 A CN200910128091 A CN 200910128091A CN 101505509 B CN101505509 B CN 101505509B
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Abstract
The invention discloses a method for realizing resource reservation and an interworking network element. The method comprises the following steps that: the interworking network element receives a request message from IMS; an integrated service digital network user part ISUP message is enclosed in the request message; the request message enclosing the ISUP message is transmitted to a soft exchange, wherein the request message is used for indicating the resource reservation; the ISUP message comprises a forward conduction indication; and the interworking network element receives a 183 message from the soft exchange, and transmits the 183 message to the IMS to make the IMS do the resource reservation, wherein the 183 message carries a resource reservation message. The method and the interworking network element improve the process of the resource reservation.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to the implementation method and the interconnection network element of resource reservation.
Background technology
Procotol (Internet Protocol, abbreviate IP as) IP multimedia subsystem, IMS (IPMultimedia Core Network Subsystem, abbreviate IMS as) be by third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) be organized in the core control subsystem of the support IP multimedia service that proposes after its R5 Standard Edition, it can realize real-time and non real-time multimedia service on the 3G packet domain, and can realize interoperability with circuit domain and soft switch territory.IMS is a kind of dialogue-based startup agreement (The Session Initiation Protocol, abbreviate SIP as) protocol architecture, be independent of the core subsystem of access technology, can realize comprising the fusion of fixing, mobile network's multiple network by IMS.
At present, the IMS network will become the direction of following communication network evolution.Simultaneously, this evolution also needs a process, and in evolution process, IMS network and existing flexible exchanging network, circuit switching (Circuit Switch abbreviates CS as) network, 2G/3G mobile network can for a long time and deposit.Under this many networks and the environment deposited, just there is the requirement of intercommunication between IMS and these existing networks, need to realize the IMS subscriber equipment and fix, the communicating by letter of business such as the voice between the mobile subscriber equipment, video, short message.About the intercommunication of IMS and CS network, determined in 3 GPP 29.163 that concrete network constitutes and detailed call flow.Two main network elements wherein realizing IMS and CS network interworking are MGCF (Media Gateway Control Function, abbreviate MGCF as) and IMS media gateway (IMS Media Gateway, abbreviate IMS-MGW as), they finish the intercommunication between control plane (Control Plane) and user plane (User Plane) respectively.
Intercommunication about IMS and legacy network, 3GPP 29.163 has provided IMS and ISUP (Integrated Services Digital Network User Part, abbreviate ISUP as)/the concrete network of carrying independent call control (Bearer Independent Call Control abbreviates BICC as) protocol network intercommunication constitutes and detailed call flow.With IMS and CS (ISUP) network interworking, the IMS subscriber equipment is a caller equipment, needs resource reservation below, and CS network support conducting and do not support that conduction detection is that example is described respectively correlation technique.Call flow as depicted in figs. 1 and 2.
Fig. 1 is that the IMS subscriber equipment according to correlation technique is caller, need do resource reservation to caller, and the flow chart of CS network support conduction detection, as shown in Figure 1, comprises that following step 101 is to step 108:
Step 101, the IMS network interconnection network element between IMS and CS sends request (INVITE) message, initiates new calling, carries resource reservation (precondition) information in the INVITE.
Step 102, after interconnection network element receives INVITE, processing by local policy, determine that this is a calling to the CS network of supporting conduction detection, then, interconnection network element sends session progress (Sessions Progress is called 183) message to IMS, and 183 message here carry the media information of called subscriber equipment.
Step 103, interconnection network element is when sending 183 message, send initial address message (Initial Address Message to the CS network, abbreviate IAM as), IAM carries forward direction conducting indication and " continues to check (continuity checkperformed on a previous circuit) in the forward direction circuit ".
Rapid 104, after IMS receives 183 message, send interim (PRACK) request message to interconnection network element.
After step 105, interconnection network element receive the PRACK request message that IMS sends, send it back to IMS and to answer (PRACK) message of successful respond (200 OK).
Step 106, after IMS receives 200 OK message of interconnection network element transmission, IMS begins reserved resource, after the IMS reserved resource is finished, IMS sends to interconnection network element and upgrades (UPDATE) message, and carry the media information of the completed Session Description Protocol of resource reservation (Sessions Description Protocol abbreviates SDP as) therein.
After step 107, interconnection network element receive UPDATE message, local media information is made amendment, then, send 200 OK message to IMS with the media information in this message.
Step 108, in step 107, interconnection network element is discerned this UPDATE message, and the affirmation resource reservation is finished, and then, sends conduction detection to the CS network and finishes message (COT).
Follow-up flow process is common call flow, does not repeat them here.
Fig. 2 is that the IMS subscriber equipment according to correlation technique is caller, need do resource reservation to caller, and the CS network do not support the flow chart of conduction detection, as shown in Figure 2, comprises that following step 201 is to step 207:
Step 201, the IMS network interconnection network element between IMS and CS sends INVITE, initiates new calling, carries resource reservation (precondition) information in this INVITE.
Step 202 is after interconnection network element receives INVITE, by the processing of local policy, determine that this is a calling to the CS network of not supporting conduction detection, then, interconnection network element sends 183 message to IMS, and this 183 message carries the media information of called subscriber equipment.
Step 203 after IMS receives 183 message, sends the PRACK request message to interconnection network element.
After step 204, interconnection network element receive the PRACK request message that IMS sends, send it back to IMS and to answer 200 OK (PRACK) message.
Step 205, IMS receives receiveing the response of interconnection network element transmission, then, IMS begins reserved resource, after the IMS reserved resource was finished, IMS sent the UPDATE request message to interconnection network element, and carried the media information of the completed SDP of resource reservation in the UPDATE request message.
After step 206, interconnection network element receive UPDATE message, local media information is made amendment, then, send 200 OK message to IMS with the media information in the UPATE message.
Step 207, interconnection network element is discerned this UPDATE message, determines that resource reservation finishes, and then, sends out initial address message IAM to the CS network.
Follow-up flow process is common call flow, do not repeat them here, need to prove, in the processing procedure of above-mentioned flow process, can appear under the situation that the caller resource reservation do not finish, called terminal ringing, and after called answering, can't connect the phenomenon of the business of caller, this phenomenon is called as " terrible ring ".
The resource reservation technology of having only intercommunication between IMS network and the circuit-switched network in the correlation technique, still, the problem at the resource reservation of intercommunication between IMS network and the soft switch is realized does not propose effective solution at present as yet.
Summary of the invention
Propose the present invention at realizing the problem of the resource reservation of intercommunication between IMS network and the soft switch in the correlation technique, for this reason, main purpose of the present invention is to provide a kind of implementation of resource reservation, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of implementation method of resource reservation.
Implementation method according to resource reservation of the present invention, be applied to comprise the communication system of the interconnection network element between network protocol multi-media sub-system IMS, soft switch and IMS and the soft switch, this method comprises: interconnection network element receives the request message from IMS, encapsulation ISUP ISUP information in request message, and the request message that will be packaged with ISUP information sends to soft switch, wherein, request message is used for indication and carries out resource reservation, and ISUP information comprises: forward direction conducting indication; Interconnection network element receives 183 message from soft switch, and gives IMS with 183 forwards, so that so that IMS carries out resource reservation, wherein, 183 message carry resource obligate information.
Preferably, after the request message that interconnection network element will be packaged with ISUP information sent to soft switch, this method also comprised: soft switch receives request message, obtains resource obligate information, and sends 183 message to interconnection network element.
Preferably, after interconnection network element sent 183 message, this method also comprises: soft switch sent initial address message to Circuit Switching Network in soft switch, and carried forward direction conducting indication therein.
Preferably, soft switch is obtained resource obligate information and comprised: soft switch sends information request message to the flexible exchanging network subscriber equipment, and wherein, information request message is used for the request resource obligate information; Soft switch receives the response message from the flexible exchanging network subscriber equipment, wherein, carries resource obligate information in the response message.
Preferably, after interconnection network element was given IMS with 183 forwards, this method also comprises: interconnection network element received the updating message from IMS, and wherein, updating message carries the completed media information of resource reservation; Interconnection network element is finished according to the media information affirmation resource reservation that obtains from updating message; Interconnection network element encapsulates ISUP information in updating message, and the updating message that will encapsulate ISUP information sends to soft switch.
Preferably, after the updating message that interconnection network element will encapsulate ISUP information sent to soft switch, this method also comprised: soft switch receives updating message, and revises local media information according to updating message, returns 200 OK message to interconnection network element; Soft switch sends to Circuit Switching Network and is used to the notification message of indicating conduction detection to finish.
Preferably, after the updating message that interconnection network element will encapsulate ISUP information sent to soft switch, this method also comprised: soft switch receives updating message, and revises local media information according to updating message, returns 200 OK message to interconnection network element; Soft switch is transmitted updating message to the flexible exchanging network subscriber equipment.
Preferably, above-mentioned soft switch is the soft switch group that comprises a plurality of soft switch, wherein, and the request message that transparent transmission receives between a plurality of soft switch.
To achieve these goals, according to a further aspect in the invention, provide a kind of interconnection network element
According to interconnection network element of the present invention, this interconnection network element comprises: first receiver module, be used to receive request message from IMS, and wherein, request message is used for indication and carries out resource reservation; First package module is used for the request message encapsulation ISUP information that receives at first receiver module; First sending module, the request message that is used for first package module is packaged with ISUP information sends to soft switch, and wherein, ISUP information comprises: forward direction conducting indication; Second receiver module is used to receive 183 message from soft switch, and wherein, 183 message carry resource obligate information; Second sending module, 183 forwards that are used for second receiver module is received are given IMS, so that so that IMS carries out resource reservation.
Preferably, this interconnection network element also comprises: the 3rd receiver module, be used to receive updating message from IMS, and wherein, updating message carries the completed media information of resource reservation; Confirm module, the media information affirmation resource reservation that is used for obtaining according to the updating message that receives from the 3rd receiver module is finished; Second package module is used for after confirming that module confirms that resource reservation has been finished, encapsulation ISUP information in the updating message that the 3rd receiver module receives; The 3rd sending module is used for the updating message that is packaged with ISUP information from second package module is sent to soft switch.
By the present invention, interconnection network element will send to soft switch after the request message encapsulation ISUP information from IMS, and will give IMS from 183 forwards that carry resource obligate information of soft switch, so that IMS carries out resource reservation, solved the problem that can't realize the resource reservation of intercommunication between IMS network and the soft switch in the correlation technique, and then perfect resource reservation process.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is that the IMS subscriber equipment according to correlation technique is caller, need do resource reservation to caller, and the flow chart of CS network support conduction detection;
Fig. 2 is that the IMS subscriber equipment according to correlation technique is caller, need do resource reservation to caller, and the CS network is not supported the flow chart of conduction detection;
Fig. 3 is the flow chart according to the implementation method of the resource reservation of the embodiment of the invention;
Fig. 4 is that the IMS subscriber equipment according to the embodiment of the invention is caller, need do resource reservation to caller, the flow chart of the CS network support conduction detection after soft switch;
Fig. 5 is that the IMS subscriber equipment according to the embodiment of the invention is caller, need do resource reservation to caller, and the CS network after soft switch is not supported the flow chart of conduction detection;
Fig. 6 is that the IMS subscriber equipment according to the embodiment of the invention is caller, need do resource reservation to caller, the flow chart of called H248 subscriber equipment for soft switch;
Fig. 7 is the structured flowchart according to the interconnection network element of the embodiment of the invention;
Fig. 8 is the concrete structure block diagram according to the interconnection network element of the embodiment of the invention.
Embodiment
Functional overview
Consider the problem that can't realize the resource reservation of intercommunication between IMS network and the soft switch in the correlation technique, the embodiment of the invention provides a kind of implementation of resource reservation, interconnection network element will send to soft switch after the request message encapsulation ISUP information from IMS, and will give IMS from 183 forwards that carry resource obligate information of soft switch, so that IMS carries out resource reservation.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Method embodiment
According to embodiments of the invention, a kind of implementation method of resource reservation is provided, be applied to comprise the communication system of the interconnection network element between IMS, soft switch and IMS and the soft switch.
Fig. 3 is the flow chart according to the implementation method of the resource reservation of the embodiment of the invention, and as shown in Figure 3, this method comprises that following step S302 is to step S304:
Step S302, interconnection network element receives the request message from IMS, encapsulation ISUP ISUP information in request message, and the request message that will be packaged with ISUP information sends to soft switch, wherein, request message is used for indication and carries out resource reservation, and ISUP information comprises: forward direction conducting indication.
After this, soft switch receives this request message, obtains resource obligate information, and sends 183 message to interconnection network element.Preferably, soft switch can send initial address message to Circuit Switching Network, and carries forward direction conducting indication therein.
Wherein, soft switch is obtained the operation of resource obligate information and can be handled in the following way: soft switch sends information request message to the flexible exchanging network subscriber equipment, and wherein, information request message is used for the request resource obligate information; Soft switch receives the response message from the flexible exchanging network subscriber equipment, wherein, carries resource obligate information in the response message.
Particularly, make a call, call out interconnection network element, open to exhale among the message INVITE and have resource obligate information, after interconnection network element is handled through local policy, confirm that this calling is a calling to other soft switch by soft switch upgrading for IMS user.Send to band ISUP encapsulation in the INVITE of soft switch at interconnection network element, and carry forward direction conducting indication therein.Soft switch is after receiving the INVITE that has forward direction conducting indication, if the back sends 183 message to interconnection network element, and indicates therein and carry out resource reservation to be type of user or Circuit Switching Network such as local H248; If call out to go out the territory for soft switch the back, then with the INVITE transparent transmission.
Step S304, interconnection network element receives 183 message from soft switch, and gives IMS with 183 forwards, so that IMS carries out resource reservation, wherein, 183 message carry resource obligate information.
After this, interconnection network element receives the updating message from IMS, and wherein, updating message carries the completed media information of resource reservation; Interconnection network element is finished according to the media information affirmation resource reservation that obtains from updating message; Interconnection network element encapsulates ISUP information in updating message, and the updating message that will encapsulate ISUP information sends to soft switch.
Then, soft switch receives updating message, and revises local media information according to updating message, returns 200 OK message to interconnection network element; Soft switch sends to Circuit Switching Network and is used to the notification message of indicating conduction detection to finish, and perhaps soft switch is transmitted this updating message to the flexible exchanging network subscriber equipment.
Particularly, interconnection network element is when receiving the renewal of IMS (UPDATE) message, UPDATE message is discerned, whether finish resource reservation to confirm caller, if finish, in sending to the UPDATE message of soft switch, carry out the ISUP encapsulation, and carry COT therein, finish with the conducting of indication forward direction.Soft switch is handled according to the processing rule of current soft switch after receiving the UPDATE message that carries the COT encapsulation, for example, can comprise following operation:
(1) is initiated to the calling of back, is applicable to the back of soft switch to being the Circuit Switching Network that does not support conduction detection to Circuit Switching Network.
(2) send COT to Circuit Switching Network backward, be applicable to the back of soft switch to Circuit Switching Network for the support conduction detection.
(3) transparent transmission has the UPDATE message of COT encapsulation, is applicable to the back to being flexible exchanging network of soft switch.
Need to prove that above-mentioned soft switch can be for comprising the soft switch group of a plurality of soft switch, wherein, the request message that transparent transmission receives between a plurality of soft switch.
By this embodiment, interconnection network element that soft switch upgrades to IMS and soft switch intercommunication is provided, IMS user is caller, caller needs the implementation method of resource reservation in the calling, overcome the problem that can't realize the resource reservation of intercommunication between IMS network and the soft switch in the prior art, provide in IMS and the soft switch intercommunication, IMS user does caller, carries out the technology of caller resource reservation.
Example one
Fig. 4 is that the IMS subscriber equipment according to the embodiment of the invention is caller, need do resource reservation to caller, the flow chart of the CS network support conduction detection after soft switch, and as shown in Figure 4, this flow process specifically comprises the steps 401 to step 414:
Step 401, the IMS network interconnection network element between IMS and soft switch sends request (INVITE) message, initiates new calling, carries resource obligate information in the INVITE.
Step 402, after interconnection network element receives INVITE, processing by local policy, determine that this is a calling to flexible exchanging network of also not satisfying caller resource reservation condition, then, interconnection network element encapsulates ISUP information in sending to the INVITE of soft switch, and, include forward direction conducting indication " continuity checkperformed on a previous circuit " in this INVITE.
Step 403, soft switch receives the INVITE that has forward direction conducting indication " continuity checkperformed on a previous circuit ", then, determine that according to local policy this calling is a calling of arriving the back to the circuit-switched network of supporting conduction detection, after called party information is obtained in soft switch, send 183 message to interconnection network element, carry called media information in this 183 message.
Step 404, soft switch send IAM message to Circuit Switching Network backward when sending 183 message to interconnection network element, carry forward direction conducting indication " continuity check performed on a previous circuit " in this IAM message.
After step 405, interconnection network element receive 183 message, delete the ISUP packed part in 183 message, then, give IMS 183 forwards.
After step 406-407, IMS receive 183 message of interconnection network element transmission, send the PRACK request message to interconnection network element, interconnection network element passes through soft switch with this message, after soft switch receives the PRACK request message, does corresponding media information and handles.
Step 408-409, soft switch sends 200OK (PRACK) message to interconnection network element after media information is done respective handling, after interconnection network element receives this 200OK message, this 200OK message is passed through IMS.
Step 410, after IMS received 200 OK message of interconnection network element response, IMS began reserved resource, after the IMS reserved resource is finished, IMS sends the UPDATE request to interconnection network element, carries the completed media information of resource reservation in this UPDATE (renewal) message.
Step 411, after interconnection network element receives this UPDATE message, this UPDATE message is discerned, determine that resource reservation finishes, then, when giving soft switch with this UPDATE forwards, add ISUP encapsulation COT, this UPDATE message carries the indication that resource reservation finished and " checks successfully (continuity check successful) ".
After step 412, soft switch receive UPDATE information, revise local media information, then, send 200 OK to interconnection network element with the SDP among the UPDATE.
Step 413, the indication " continuity check successful " that soft switch has been finished according to entrained conduction detection in the UPDATE message that receives, send COT to Circuit Switching Network, announcing circuit switching network, forward direction conduction detection are finished.
After step 414, interconnection network element receive 200 OK message, 200 OK message are passed through IMS.
Follow-up flow process is common call flow, and is same as the prior art, do not repeat them here.
By this example, it is caller that the IMS subscriber equipment is provided, and need do resource reservation to caller, the flow process of the CS network support conduction detection after soft switch.
Example two
Fig. 5 is that the IMS subscriber equipment according to the embodiment of the invention is caller, need do resource reservation to caller, and the CS network after soft switch is not supported the flow chart of conduction detection, and as shown in Figure 5, this flow process specifically comprises the steps 501 to step 513:
Step 501, the IMS network interconnection network element between IMS and soft switch sends INVITE, initiates new calling, carries resource reservation (precondition) information in the INVITE.
Step 502, after interconnection network element receives INVITE, processing by local policy, determine that this is a calling to flexible exchanging network of also not satisfying caller resource reservation condition, then, interconnection network element is encapsulation ISUP information in the INVITE of transmitting to soft switch, includes forward direction conducting indication " continuity checkperformed on a previous circuit " in this INVITE.
Step 503, soft switch receives the INVITE that has forward direction conducting indication " continuity checkperformed on a previous circuit ", then, according to local policy determine this calling be one to the back to the calling of the circuit-switched network of not supporting conduction detection.After called party information is obtained in soft switch, send 183 message to interconnection network element, this 183 message carries called media information.
Step 504, interconnection network element are deleted the ISUP packed part in 183 message after receiving 183 message of soft switch transmission, then, give IMS with 183 forwards.
After step 505-506, IMS receive 183 message of interconnection network element transmission, send the PRACK request message to interconnection network element, interconnection network element passes through soft switch with this message, after soft switch receives the PRACK request message, does corresponding media information and handles.
Step 507-508, soft switch sends to 200 OK (PRACK) message to interconnection network element after media information is done respective handling, after interconnection network element receives this 200 OK message, this 200 OK message is passed through IMS.
Step 509, IMS receives the response 200 OK message that interconnection network element sends, then, IMS begins reserved resource, after the IMS reserved resource was finished, IMS sent the UPDATE request message to interconnection network element, carries the completed media information of resource reservation in this UPDATE request message.
Step 510, after interconnection network element receives this UPDATE message, this UPDATE message is discerned, determine that resource reservation finishes, then, when giving soft switch, add ISUP encapsulation COT, and in this UPDATE message, carry the indication " continuity check successful " that conduction detection has been finished this UPDATE forwards.
After step 511, soft switch receive UPDATE message, revise local media information, then, send out 200OK to interconnection network element with the SDP among the UPDATE.
Step 512, soft switch has been finished indication " continuity check successful " according to entrained conduction detection in the UPDATE message that receives, and sends IAM message to Circuit Switching Network.
Step 513, interconnection network element pass through IMS with this 200 OK message after receiving 200 OK message of soft switch transmission.
Follow-up flow process is common call flow, and is same as the prior art, do not repeat them here.
By this example, it is caller that the IMS subscriber equipment is provided, and need do resource reservation to caller, and the CS network after soft switch is not supported the flow process of conduction detection.
Example three
Fig. 6 is that the IMS subscriber equipment according to the embodiment of the invention is caller, need do resource reservation to caller, the flow chart of called H248 subscriber equipment for soft switch, and as shown in Figure 6, this flow process specifically comprises the steps 601 to step 615:
Step 601, the IMS network interconnection network element between IMS and soft switch sends INVITE, initiates new calling, carries resource reservation precondition information in the INVITE.
Step 602, after interconnection network element receives INVITE, processing by local policy, determine this be one also do not satisfy caller resource reservation condition after the calling of flexible exchanging network, interconnection network element is encapsulation ISUP information in the INVITE of transmitting to soft switch, and, include forward direction conducting indication " continuity checkperformed on a previous circuit " in this INVITE.
Step 603, soft switch receives the INVITE that has forward direction conducting indication " continuity checkperformed on a previous circuit ", then, determine that according to local policy this calling is a calling to the H248 subscriber equipment of soft switch, soft switch to called subscriber equipment (promptly, the H248 subscriber equipment) send to prepare called media information (A=User, A=$).
Step 604 after called subscriber equipment is ready to media information, sends successful response (Reply) message to soft switch.
Step 605, soft switch send 183 message to interconnection network element, and carry called media information in this 183 message after receiving the response message of called subscriber equipment transmission.
Step 606, interconnection network element are deleted ISUP packed part in 183 message after receiving 183 message of soft switch transmission, then, give IMS with 183 forwards.
Step 607-608, IMS send the PRACK request message to interconnection network element after receiving 183 message that interconnection network element sends, and interconnection network element passes through soft switch with this message, and soft switch is done corresponding media information and handled receiving after this send the PRACK request message.
Step 609-610, soft switch sends 200OK (PRACK) message to interconnection network element after media information is done respective handling, after interconnection network element receives this 200 OK message, this 200 OK message is passed through IMS.
Step 611, after IMS received the 200OK message of interconnection network element response, IMS began reserved resource, and after the IMS reserved resource was finished, IMS sent the UPDATE request message to interconnection network element, carries the completed media information of resource reservation in this UPDATE message.
Step 612, interconnection network element is after receiving UPDATE message, this UPDATE message is discerned, determine that resource reservation finishes, then, when giving soft switch with this UPDATE forwards, add ISUP encapsulation COT, this UPDATE message carries the indication " continuity check successful " that resource reservation has been finished.
Step 613-614, soft switch is revised local media information with the SDP among the UPDATE after receiving UPDATE message, then, send out 200OK to interconnection network element, after interconnection network element receives 200OK message, this 200OK message is passed through IMS.
Step 615, the indication " continuity check successful " that soft switch has been finished according to entrained conduction detection in the UPDATE message that receives is revised media information (MF=User{al/ri...}) to called transmission, allows called terminal ringing.
Follow-up is common call flow, same as the prior art, does not repeat them here.
By this example, it is caller that the IMS subscriber equipment is provided, and need do resource reservation to caller, and called is the flow process of the H248 subscriber equipment of soft switch.
Need to prove, basic principle according to the embodiment of the invention, the foregoing description also has multiple mapping mode, for example: type of user equipment such as the H248 that interconnection network element or soft switch carry, V5, ISDN are called subscriber equipment, the IMS subscriber equipment is a calling subscriber equipment, need do the resource reservation operation to medium, can not support the flow process of the Circuit Switching Network of conduction detection to handle in the accompanying drawing 2 according to being similar to; It is called subscriber equipment that interconnection network element or soft switch carry SIP class subscriber equipment, the IMS subscriber equipment is a calling subscriber equipment, need do the resource reservation operation to medium, can directly make a call, determine whether to carry out the resource reservation flow process by called subscriber equipment self to called subscriber equipment; In call flow, be to echo to forward direction earlier should or to give the back earlier to sending out message, can determine not have strict restriction according to the local policy of interconnection network element voluntarily; On network constitutes, also be used for the network that a plurality of soft switch or circuit switching exchange are formed.
Device embodiment
According to embodiments of the invention, provide a kind of interconnection network element.Fig. 7 is the structured flowchart according to the interconnection network element of the embodiment of the invention, as shown in Figure 7, this interconnection network element comprises: first receiver module 2, first package module 4, first sending module 6, second receiver module 8, second sending module 0 are described said structure below.
Second receiver module 8 is used to receive 183 message from soft switch, and wherein, 183 message carry resource obligate information; Second sending module 0 is connected to second receiver module 8, is used for giving IMS with 183 forwards that second receiver module 8 receives, so that IMS carries out resource reservation.
Fig. 8 is the concrete structure block diagram according to the interconnection network element of the embodiment of the invention, and as shown in Figure 8, this interconnection network element also comprises: the 3rd receiver module 22, affirmation module 24, second package module 26, the 3rd sending module 28 are described said structure below.
The 3rd receiver module 22 is used to receive the updating message from IMS, and wherein, updating message carries the completed media information of resource reservation; Confirm module 24, be connected to the 3rd receiver module 22, the media information affirmation resource reservation that is used for obtaining according to the updating message that receives from the 3rd receiver module 22 is finished; Second package module 26 is connected to the 3rd receiver module 22 and confirms module 24, is used for after confirming that module 24 confirms that resource reservation has been finished encapsulation ISUP information in the updating message that the 3rd receiver module 22 receives; The 3rd sending module 28 is connected to second package module 26, is connected to the updating message that is packaged with ISUP information that is used for from second package module 26 and sends to soft switch.
In sum,, solved the resource reservation technology of having only intercommunication between IMS network and the circuit-switched network at present, do not had the problem of the resource reservation technology of intercommunication between IMS network and the soft switch by the above embodiment of the present invention.The interconnection network element that is used for intercommunication between IMS network and the circuit-switched network at present is one and realizes that separately control plane and user-plane function are in esse network elements.In the intercommunication between IMS network and soft switch, be more prone to soft switch is upgraded to when having with the IMS IWF, have the existing function of current soft switch, like this, help to save the cost of operator.A critical function of above-mentioned soft switch is exactly to cooperate with application server, realizes user's miscellaneous service, and this has had in existing network very widely uses.Technique scheme provided by the invention has solved in IMS and the flexible exchanging network intercommunication, and IMS user does caller, needs caller is done the problem of resource reservation in calling.Can just allow called terminal ringing after the caller resource reservation is finished, ring-back tone is listened in caller, thereby has reduced the generation of " terrible ring " phenomenon.Need to prove that identical technology also is applicable in the communication process, because of revising the resource reservation flow process that medium cause.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the implementation method of a resource reservation is applied to comprise the communication system of the interconnection network element between network protocol multi-media sub-system IMS, soft switch and described IMS and the described soft switch it is characterized in that described method comprises:
Described interconnection network element receives the request message from described IMS, encapsulation ISUP ISUP information in described request message, and the request message that will be packaged with described ISUP information sends to described soft switch, wherein, described request message is used for indication and carries out resource reservation, and described ISUP information comprises: forward direction conducting indication;
Described interconnection network element receives 183 message from described soft switch, and gives described IMS with described 183 forwards, so that described IMS carries out resource reservation, wherein, described 183 message carry resource obligate information.
2. method according to claim 1 is characterized in that, after the described request message that described interconnection network element will be packaged with described ISUP information sent to described soft switch, described method also comprised:
Described soft switch receives described request message, obtains described resource obligate information, and sends described 183 message to described interconnection network element.
3. method according to claim 2 is characterized in that, after described interconnection network element sent described 183 message, described method also comprised in described soft switch:
Described soft switch sends initial address message to Circuit Switching Network, and carries described forward direction conducting indication therein.
4. method according to claim 2 is characterized in that, described soft switch is obtained described resource obligate information and comprised:
Described soft switch sends information request message to the flexible exchanging network subscriber equipment, and wherein, described information request message is used for the request resource obligate information;
Described soft switch receives the response message from described flexible exchanging network subscriber equipment, wherein, carries described resource obligate information in the described response message.
5. method according to claim 1 is characterized in that, after described interconnection network element was given described IMS with described 183 forwards, described method also comprised:
Described interconnection network element receives the updating message from described IMS, and wherein, described updating message carries the completed media information of resource reservation;
Described interconnection network element is finished according to the described media information affirmation resource reservation that obtains from described updating message;
Described interconnection network element encapsulates described ISUP information in described updating message, and the updating message that will encapsulate described ISUP information sends to described soft switch.
6. method according to claim 5 is characterized in that, after the described updating message that described interconnection network element will encapsulate described ISUP information sent to described soft switch, described method also comprised:
Described soft switch receives described updating message, and revises local media information according to described updating message, returns 200OK message to described interconnection network element;
Described soft switch sends to Circuit Switching Network and is used to the notification message of indicating conduction detection to finish.
7. method according to claim 5 is characterized in that, after the described updating message that described interconnection network element will encapsulate described ISUP information sent to described soft switch, described method also comprised:
Described soft switch receives described updating message, and revises local media information according to described updating message, returns 200OK message to described interconnection network element;
Described soft switch is transmitted described updating message to the flexible exchanging network subscriber equipment.
8. according to each described method in the claim 1 to 7, it is characterized in that described soft switch is the soft switch group that comprises a plurality of soft switch, wherein, the described request message that transparent transmission receives between described a plurality of soft switch.
9. an interconnection network element is characterized in that, comprising:
First receiver module is used to receive the request message from IMS, and wherein, described request message is used for indication and carries out resource reservation;
First package module is used for the described request message encapsulation ISUP information that receives at described first receiver module;
First sending module is used for the request message that described first package module is packaged with described ISUP information is sent to soft switch, and wherein, described ISUP information comprises: forward direction conducting indication;
Second receiver module is used to receive 183 message from soft switch, and wherein, described 183 message carry resource obligate information;
Second sending module, described 183 forwards that are used for described second receiver module is received are given described IMS, so that described IMS carries out resource reservation.
10. interconnection network element according to claim 9 is characterized in that, also comprises:
The 3rd receiver module is used to receive the updating message from described IMS, and wherein, described updating message carries the completed media information of resource reservation;
Confirm module, be used for finishing according to the described media information affirmation resource reservation that the described updating message that receives from described the 3rd receiver module is obtained;
Second package module is used for after described affirmation module confirms that resource reservation has been finished, the described ISUP information of encapsulation in the described updating message that described the 3rd receiver module receives;
The 3rd sending module is used for the updating message from the described ISUP information of being packaged with of described second package module is sent to described soft switch.
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| CN106856469A (en) * | 2015-12-09 | 2017-06-16 | 中国电信股份有限公司 | Resource reservation mechanism implementation method, application server and system |
| CN107371191B (en) * | 2016-05-11 | 2019-11-12 | 中国移动通信有限公司研究院 | A kind of audio call is converted to the method and apparatus of video call |
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