CN101111000B - Method for releasing call by called subscriber's set in IMS centralized business - Google Patents

Method for releasing call by called subscriber's set in IMS centralized business Download PDF

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Publication number
CN101111000B
CN101111000B CN2007101456435A CN200710145643A CN101111000B CN 101111000 B CN101111000 B CN 101111000B CN 2007101456435 A CN2007101456435 A CN 2007101456435A CN 200710145643 A CN200710145643 A CN 200710145643A CN 101111000 B CN101111000 B CN 101111000B
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release
message
called
call
ims
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CN101111000A (en
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游世林
郝振武
谢宝国
蔡继燕
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ZTE Corp
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ZTE Corp
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Abstract

The present invention discloses a method for the equipment of the called user to releases call in the IMS concentrated service, and the method comprises the following steps that step S302, when the equipment of the called user initiates the call releasing, the equipment of the called user sends the reason information of the call releasing to the IMS circuit domain controlling functioned module; and step S304, the IMS circuit domain controlling functioned module release the information to the call of the caller side and the called side according to the reason of the call releasing. The present invention realizes the called releasing process, and can make the supplementary service of the corresponding called releasing of the IMS concentrated service of the CS access integrally controlled in the IMS domain.

Description

In the IMS centralized traffic by the method for called subscriber equipment call release
Technical field
The present invention relates to the communications field, relate more specifically in a kind of IMS centralized traffic method by the called subscriber equipment call release.
Background technology
IP (network interconnection agreement, Internet Protocol, be called for short IP) IP multimedia subsystem, IMS (IP Multimedia Core Network Subsystem, be called for short IMS) be by third generation partner program (3rd Generation Partnership Project, be called for short 3 GPP) a kind of IP-based network framework of proposing, it has made up an opening and service environment flexibly, supports multimedia application, and provides abundant multimedia service for the user.
IMS is based on the communication network framework of IP, irrelevant with access technology, except being GPRS (General Packet Radio Service, GPRS), WLAN (Wireless Local Area Network, WLAN (wireless local area network)) etc. packet access network provides outside the business, can also be GSM (Global System for Mobile communications, global system for mobile communications), UMTS mobile cellular networks such as (Universal Mobile TelecommunicationsSystem, unified mobile communcations systems) provides professional.
Mobile cellular network such as GSM, UMTS adopts circuit-switched technology, is called circuit (Circuit Switched is called for short CS) territory, can provide basic speech business for the user, and based on the supplementary service of speech business.When IMS was inserted in the CS territory, it developed into a kind of access way, and business provides by IMS is unified fully, and this technology is called IMS centralized traffic (IMS Centralized Service is called for short ICS).
The IMS centralized traffic has the following advantages:
(1) IMS provides consistent business for access waies such as circuit domain, packet domain, and network enabled merges;
(2) support the CS network to the evolution of IMS network;
(3) not only support to have ICS ability subscriber equipment, also support the existing subscriber equipment that does not possess the ICS ability.
Two class subscriber equipmenies (User Equipment, be called for short UE) are arranged: support the UE (being called for short ICS UE) of ICS ability and do not support the UE (abbreviation non ICS UE) of ICS ability.
Network side increases by 2 entities, is respectively that circuit domain inserts adaption function (CS AccessAdaptation Function is called for short CAAF) and remote subscriber agency (Remote UserAgent is called for short RUA).
CAAF can be divided into the remote circuitry territory and insert adaption function (Remote CS AccessAdaptation Function is called for short R-CAAF) and local circuit territory access adaption function (Local CS Access Adaptation Function is called for short L-CAAF).For ICSUE, L-CAAF is integrated among the ICS UE, and for non ICS UE, L-CAAF is arranged in VMSC or L-CAAF separates with VMSC, between UE and VMSC, is called L-CAAF-n.R-CAAF is positioned at home network and RUA forms ICCF jointly, calls out the access point that inserts IMS as the CS territory.
RUA is a sip user agent, represents UE to insert the IMS network.CAAF is the adaption function of business control signaling between CS territory and the IMS, transport service control signaling between CS territory UE and RUA, and RUA utilizes the information foundation and the control IMS session of obtaining from CAAF.
Fig. 1～Fig. 4 is 4 kinds of Organization Charts of IMS centralized control business, and wherein Fig. 1 and Fig. 2 are for the framework under the ICS UE, and Fig. 3 and Fig. 4 then are for the framework under the non ICS UE.In above-mentioned accompanying drawing, comprise following network element:
X01: user terminal (User Equipment is called for short UE) comprises ICS UE or non ICS UE;
X02 (ICS UE): adaption function (Local CS AccessAdaptation Function-network equivalent is called for short L-CAAF) is inserted in the local circuit territory, and it is arranged in mobile phone;
X02 (non ICS UE): adaption function-network side (LocalCS Access Adaptation Function-network equivalent is called for short L-CAAF-n) is inserted in the local circuit territory, and it can be arranged in VMSC, also can be between VMSC and UE;
X03: Visited Mobile Switching Center (Visited Mobile Switch Center is called for short VMSC), the exchange that it roams into for UE;
X04: home subscriber server (Home Subscriber Server, be called for short HSS) is used to preserve the user data of UE;
X05: MGCF (Media Gateway Control Function is called for short MGCF), that is, and the gateway of control medium;
X06: media gateway (Media Gateway is called for short MGW), it has media resource;
X07:IMS circuit domain control function (IMS CS Control Function is called for short ICCF), it is the professional major function entity of ICS;
X08: CSCF (Call Session Control Function is called for short CSCF), it is the functional entity of IMS controlling call and session,
UE_X01 sets up 3 paths to the ICCF X07 in IMS territory: session control path, carrying control path and bearer path.
The session control path has situations different in 4 respectively for Fig. 1～Fig. 4.Fig. 1 adopts the PS territory to connect and sets up the session control path, and promptly UE101 adopts session initiation protocol signaling (Session Initial Protocol is called for short SIP), arrives ICCF 107 through CSCF108; Fig. 2 adopts unstructured supplementary service data (Unstructured SupplementaryService Data is called for short USSD), and UE 201 arrives ICCF 107 by VMSC 303 and HSS 304; Fig. 3 is that L-CAAF-n302 adopts the SIP signaling, arrives ICCF 307 through CSCF 308; Fig. 4 is that L-CAAF-n402 adopts USSD, arrives ICCF 407 by HSS 404.The session control path is used for session control, and foundation of caller controlling call and control IC S UE supplementary service finishes in the ICS business.
Path UE X01 is by L-CAAF-nX02 or VMSC X03 in carrying control, and arrives ICCF X107 by MGCF X06 and CSCF X108.Wherein VMSC X03 adopts integrated digital service-user part signaling (ISDN User Part is called for short ISUP) to MGCF X06; It is the SIP signaling that adopts that MGCF X06 arrives ICCF X07 by CSCF X08; For ICS UE, UE X01 is the CS control signaling access of standard to VMSC X03, and for non ICS UE, UE X01 is the CS control signaling access of standard to L-CAAF-n X02, L-CAAF-n X02 is between the VMSC X03 be the employing internal interface together, also may there be MAP (Mobile Application Part is called for short MAP) in the base station of perhaps adopting standard to the interface A mouth between the VMSC.Carrying control path is mainly used in control CS territory and sets up to the carrying in IMS territory.
Bearer path UE X01 is by the MGW X06 in VMSC X03 or VMSC X03 and L-CAAF-n X02 arrival IMS territory.Bearer path provides the required bearing resource of call session.
Fig. 5 is the flow chart that is discharged by called initiation in the prior art, and wherein the possibility of called release has 5 kinds of situations:
A: being the situation of step S508, is when receiving called request, to be provided with some calling subscriber of rejection according to called personal inclination in terminal called, causes the release of whole calling;
B: being the situation of step S516, is behind called terminal ringing, calls out according to called personal inclination's rejection, causes the release of whole calling;
C: being the situation of step S518, also is behind called terminal ringing, busy to network side hair family according to called personal considerations, thereby discharges whole calling;
Wherein, B is relevant with the terminal that the user uses with C, and some terminal may only be supported a kind of,
D: be the situation of step S520, after the user answered, Called Onhook discharged the situation of whole calling;
E: be the # part among the figure, be by base station system according to the Radio Resource situation, send out the situation of call release to network side, all may take place whole called foundation in the process.
Fig. 6 is the flow chart that called initiation discharges in the prior art, may further comprise the steps:
Step S602, CSCF receive the called request message of Calling Side;
Step S604, ICCF receive from CSCF and pass the called request message of coming;
Step S606, ICCF set up called flow according to called number;
5 kinds of called release conditions a kind of among Fig. 5 takes place in step S608, UE in called process, discharge called;
Step S610, UE sends out release message to VMSC, carries the release cause of step S608;
Step S612, VMSC sends out the release message of ISUP to MGCF, the release cause of step S610 is mapped as the release cause of ISUP;
Step S614, MGCF is mapped as the release Indication message of SIP with the release message of ISUP, and SIP is discharged Indication message by CSCF, issues ICCF;
Step S616, ICCF transmit the described SIP of step S614 to CSCF and discharge Indication message;
Step S618, CSCF send SIP to Calling Side and discharge Indication message, discharge whole calling.
In the existing procedure, the called subscriber directly sends to VMSC with the cause value of called release, when the data of the in store user's of VMSC supplementary service, the supplementary service of the cause value triggered response that VMSC just carries according to release, this just runs counter to, and all are linked into IMS territory user by the CS territory in the IMS centralized control business, and are professional by the control of IMS territory.
Therefore, by the solution of called subscriber equipment call release, can solve the problem in the above-mentioned correlation technique in a kind of IMS centralized traffic of needs.
Summary of the invention
In order to address the above problem, the present invention adopts ICS UE that called release cause value is sent ICCF by the session control path, perhaps for non ICS UE, called the release cause value is sent to L-CAAF-n, by L-CAAF-n the release cause value is sent to ICCF by the session control path, ICCF is mapped as SIP with the release cause value and discharges Indication message, by the initial filter standard or norm among the CSCF SIP is discharged the supplementary service that Indication message is delivered to the application server triggered response then, ICCF initiates to discharge again, discharges carrying and the session of ICCF to called subscriber ICS UE or L-CAAF-n.
The invention provides in a kind of IMS centralized traffic method by the called subscriber equipment call release, this method may further comprise the steps: step S302, when called subscriber equipment was initiated call release, called subscriber equipment was sent to IMS circuit domain control function module with the call release cause message; And step S304, IMS circuit domain control function module is discharged into the calling of Calling Side and the calling of arriving callee side according to the call release cause message.
In step S302, called subscriber equipment is sent to IMS circuit domain control function module with the call release cause message by the session control path.
Step S304 may further comprise the steps: step S304-2, and IMS circuit domain control function module is mapped as the release Indication message with the call release cause message, and will discharge Indication message and be sent to call session control function module; Step S304-4, call session control function module will discharge Indication message and be sent to the MGCF module, and call session control function module sends release Indication message, Calling Side call release to Calling Side; Step S304-6, the MGCF module will discharge Indication message and be mapped as release message, and send it to the Visited Mobile Switching Center module; And step S304-8, the Visited Mobile Switching Center module sends release message to callee side, the callee side call release.
Step S304-4 is further comprising the steps of: call session control function module will discharge Indication message by initial filter criteria and be sent to application server and trigger corresponding supplementary service.
Subscriber equipment for non-IMS centralized traffic, step S302 is further comprising the steps of: will call out release cause message and be sent to the local circuit territory and insert the adaption function module, and the local circuit territory is inserted the adaption function module and will be called out release cause message by the session control path and be sent to IMS circuit domain control function module.
For the subscriber equipment of non-IMS centralized traffic, step S304 is further comprising the steps of:
The Visited Mobile Switching Center module is sent to the local circuit territory with release message and inserts the adaption function module.
Discharging Indication message is session initiation protocol signaling Indication message, and release message is an integrated digital service-user part signaling release message.
Call out that release cause message comprises that the user is busy, user's rejection, normal release and the removing that initiates the base station.
The resource that the session initiation protocol signaling Indication message that is sent to the MGCF module by IMS circuit domain control function module comprises the Called Onhook of answering the back and initiating, do not answer, the user is busy, the called subscriber is temporarily unavailable and initiate the base station is unavailable.
The session initiation protocol signaling Indication message that is sent to Calling Side by call session control function module comprises that the unavailable and user of called subscriber busy, called subscriber are temporarily unavailable, initiate the base station resource answers the back and discharges called.
Adopt method of the present invention, realized called releasing process, the supplementary service that the corresponding called of the IMS centralized traffic that CS inserts is discharged obtains centralized control in the IMS territory, satisfied the demand of IMS centralized traffic control.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
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 a kind of configuration diagram that the IMS centralized control business of ICS UE is shown;
Fig. 2 is the another kind of configuration diagram that the IMS centralized control business of ICS UE is shown;
Fig. 3 is a kind of configuration diagram that the IMS centralized control business of non ICS UE is shown;
Fig. 4 is the another kind of configuration diagram that the IMS centralized control business of non ICS UE is shown;
Fig. 5 illustrates the called flow chart that discharges flow process in the process of setting up;
Fig. 6 is the flow chart that called release in the prior art is shown;
Fig. 7 be illustrate according in the IMS centralized traffic of the present invention by the flow chart of the method for called subscriber equipment call release;
Fig. 8 is the flow chart by ICS UE initiation release that illustrates according to the embodiment of the invention;
Fig. 9 is the flow chart by non ICS UE initiation release that illustrates according to the embodiment of the invention;
Figure 10 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 1;
Figure 11 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 2;
Figure 12 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 3; And
Figure 13 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 4.
Embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
Core concept of the present invention is: for the called release that ICS UE initiates, ICS UE is carried to ICCF by session control with release cause, replaces ICS UE to discharge whole calling by ICCF; And remove called release of initiating for non ICS UE or base station and discharge called, after called request sent to L-CAAF-n, L-CAAF-n was carried to ICCF by the session control path with release cause, replaced non ICS UE to discharge whole calling by ICCF.
Fig. 7 be illustrate according in the IMS centralized traffic of the present invention by the flow chart of the method for called subscriber equipment call release.With reference to Fig. 7, method by the called subscriber equipment call release in the IMS centralized traffic of the present invention may further comprise the steps: step S302, when called subscriber equipment was initiated call release, called subscriber equipment was sent to IMS circuit domain control function module with the call release cause message; And step S304, IMS circuit domain control function module is discharged into the calling of Calling Side and the calling of arriving callee side according to the call release cause message.
In step S302, called subscriber equipment is sent to IMS circuit domain control function module with the call release cause message by the session control path.
Step S304 may further comprise the steps: step S304-2, and IMS circuit domain control function module is mapped as the release Indication message with the call release cause message, and will discharge Indication message and be sent to call session control function module; Step S304-4, call session control function module will discharge Indication message and be sent to the MGCF module, and call session control function module sends release Indication message, Calling Side call release to Calling Side; Step S304-6, the MGCF module will discharge Indication message and be mapped as release message, and send it to the Visited Mobile Switching Center module; And step S304-8, the Visited Mobile Switching Center module sends release message to callee side, the callee side call release.
Step S304-4 is further comprising the steps of: call session control function module will discharge Indication message by initial filter criteria and be sent to application server and trigger corresponding supplementary service.
Subscriber equipment for non-IMS centralized traffic, step S302 is further comprising the steps of: will call out release cause message and be sent to the local circuit territory and insert the adaption function module, and the local circuit territory is inserted the adaption function module and will be called out release cause message by the session control path and be sent to IMS circuit domain control function module.
For the subscriber equipment of non-IMS centralized traffic, step S304 is further comprising the steps of:
The Visited Mobile Switching Center module is sent to the local circuit territory with release message and inserts the adaption function module.
Discharging Indication message is session initiation protocol signaling Indication message, and release message is an integrated digital service-user part signaling release message.
Call out that release cause message comprises that the user is busy, user's rejection, normal release and the removing that initiates the base station.
The resource that the session initiation protocol signaling Indication message that is sent to the MGCF module by IMS circuit domain control function module comprises the Called Onhook of answering the back and initiating, do not answer, the user is busy, the called subscriber is temporarily unavailable and initiate the base station is unavailable.
The session initiation protocol signaling Indication message that is sent to Calling Side by call session control function module comprises that the unavailable and user of called subscriber busy, called subscriber are temporarily unavailable, initiate the base station resource answers the back and discharges called.
Fig. 8 and Fig. 9 show the flow chart by called subscriber equipment initiation release according to the embodiment of the invention respectively.
Fig. 8 is the flow chart by ICS UE initiation release that illustrates according to the embodiment of the invention.With reference to Fig. 8, for ICS UE: set up in the process when called, ICS UE initiates to discharge following flow process:
Step S802, called ICS UE initiates called release, by the session control path, carries release cause, and release message is sent to ICCF;
Step S804, ICCF is mapped as the release Indication message of SIP with release cause, and the release Indication message of SIP by CSCF, is sent to MGCF;
Step S806, MGCF discharge SIP the release message that Indication message is mapped as ISUP again, send to VMSC;
Step S808, VMSC sends release message to called ICS UE; And
Step S810, ICCF discharges supplementary service that Indication message deliver to application server triggered response by initial filter standard or norm with SIP by CSCF sending SIP release Indication message in MGCF, and sends SIP release Indication message to Calling Side.
Fig. 9 is the flow chart by non ICS UE initiation release that illustrates according to the embodiment of the invention.With reference to Fig. 9, for non ICS UE: set up in the process when called, non ICS UE initiates to discharge following flow process:
Step S902, called non ICS UE initiates called release, and to L-CAAF-n, L-CAAF-n carries release cause by the session control path, and release message is sent to ICCF with release message;
Step S904, ICCF is mapped as the release Indication message of SIP with release cause, and the release Indication message of SIP by CSCF, is sent to MGCF;
Step S906, MGCF discharge SIP the release message that Indication message is mapped as ISUP again, send to VMSC;
Step S908, VMSC sends release message to L-CAAF-n; And
Step S910, ICCF discharges supplementary service that Indication message deliver to application server triggered response by initial filter standard or norm with SIP by CSCF sending SIP release Indication message in MGCF, and sends SIP release Indication message to Calling Side.
Entrained release cause is according to the situation of terminal called in step S802 and step S902, can be User Determined User Busy, user's rejection, and normal releases waits cause value, and wherein step S902 can also be the cause values such as removing of base station initiation;
Whether the release Indication message of the ICCF transmission SIP among step S804 in the above flow process and the step S904 is answered according to the called subscriber and can be: answering the Called Onhook of initiating the back is the SIP byebye message, and not answering then is SIP cancellation message; Also can be mapped as SIP and discharge Indication message according to called release cause value, it is SIP 486 expression called subscriber busies that described SIP discharges Indication message, SIP 480 expression called subscribers are temporarily unavailable, and SIP 500 is illustrated under the situation of non ICS UE, and the resource that initiate the base station is unavailable;
Step S810 in the above flow process and step S910 initiate release cause to Calling Side: SIP 486 expression called subscriber busies, SIP 480 expression called subscribers are temporarily unavailable, SIP 500 is illustrated under the situation of non ICS UE, the resource that initiate the base station is unavailable, and the SIP byebye message represents that the user answers the back and discharges called process.
Because the present invention has sent to ICCF by the session control path with the cause value of called release, ICCF is mapped as sip message with the release cause value, and initiates releasing bearing and session by ICCF.It is the solution that a kind of ICS exhales eventually.
Figure 10 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 1, with reference to Figure 10, this flow process may further comprise the steps:
Step S1002, CSCF receive the called request message of Calling Side;
Step S1004, ICCF receive from CSCF and pass the called request message of coming;
Step S1006, ICCF set up called flow according to called number;
Step S1008, terminal called calledly set up in the process, release makes a call after the ring or after answering;
Step S1010, called UE is by the session control path, send out the release Indication message of SIP to ICCF by CSCF, described release Indication message is according to the release cause of terminal called, can be SIP 486 expression called subscriber busies, SIP 480 expression called subscribers are temporarily unavailable, and the SIP byebye message represents that the user answers the back and discharges called process;
Step S1012, ICCF send out SIP by CSCF to MGCF and discharge Indication message, described SIP discharge Indication message can according to the called subscriber whether answer for: answering the Called Onhook of initiating the back is the SIP byebye message, and not answering then is SIP cancellation message; Also can transmit the message of step S1010;
Step S1014, MGCF discharge Indication message with SIP and are mapped as the ISUP release message and send to VMSC;
Step S1016, VMSC sends release message to UE;
Step S1018 in the message of ICCF in receiving step S1010, also will discharge Indication message to the described SIP that CSCF transmits among the step S1010; And
Step S1020, CSCF discharges the supplementary service that Indication message is delivered to the application server triggered response by initial filter standard or norm with SIP, and sends SIP release Indication message to Calling Side.
Figure 11 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 2, this flow process may further comprise the steps:
Step S1102, CSCF receive the called request message of Calling Side;
Step S1104, ICCF receive from CSCF and pass the called request message of coming;
Step S1106, ICCF set up called flow according to called number;
Step S1108, terminal called calledly set up in the process, release makes a call after the ring or after answering;
Step S1110, called UE is sent out USSD by VMSC and HSS to ICCF and is discharged Indication message by session control path USSD, described release Indication message is according to the release cause of terminal called, can be that the user is busy, user's rejection, the user answers reasons such as the normal release in back;
Step S1112, ICCF send out SIP by CSCF to MGCF and discharge Indication message, described SIP discharge Indication message can according to the called subscriber whether answer for: answering the Called Onhook of initiating the back is the SIP byebye message, and not answering then is SIP cancellation message; Also can be mapped as the release Indication message of SIP according to the release cause value that step S1110 carries;
Step S1114, MGCF discharge Indication message with SIP and are mapped as the ISUP release message and send to VMSC
Step S1116, VMSC sends release message to UE;
Step S1118, in the message of ICCF in receiving step S1110, the release cause value that step S1110 is carried is mapped as SIP release Indication message, sends to CSCF;
Step S1120, CSCF discharges the supplementary service that Indication message is delivered to the application server triggered response by initial filter standard or norm with SIP, and sends SIP release Indication message to Calling Side.
Figure 12 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 3, with reference to Figure 12, this flow process may further comprise the steps:
Step S1202, CSCF receive the called request message of Calling Side;
Step S1204, ICCF receive from CSCF and pass the called request message of coming;
Step S1206, ICCF set up called flow according to called number;
Step S1208, terminal called calledly set up in the process, release makes a call after the ring or after answering;
Step S1210, called UE sends to L-CAAF-n with release message, and it is busy that release message can carry the user, user's rejection, cause values such as the normal on-hook of user also can be the cause values of the called process of removing of base station initiation;
Step S1212, L-CAAF-n is by the session control path, be mapped as the release Indication message of SIP according to the described cause value that carries of step S1210, send to ICCF by CSCF, described release Indication message can be IP 486 expression called subscriber busies according to the release cause of terminal called, and SIP 480 expression called subscribers are temporarily unavailable, the resource that SIP initiates 500 expression base stations is unavailable, and the SIP byebye message represents that the user answers the back and discharges called process;
Step S1214, ICCF send out SIP by CSCF to MGCF and discharge Indication message, described SIP discharge Indication message can according to the called subscriber whether answer for: answering the Called Onhook of initiating the back is the SIP byebye message, and not answering then is SIP cancellation message; Also can transmit the message among the step S1212;
Step S1216, MGCF discharge Indication message with SIP and are mapped as the ISUP release message and send to VMSC;
Step S1218, VMSC sends release message to L-CAAF-n;
Step S1220 in the message of ICCF in receiving step S1212, also will transmit SIP described in the step S1212 to CSCF and discharge Indication message;
Step S1222, CSCF discharges the supplementary service that Indication message is delivered to the application server triggered response by initial filter standard or norm with SIP, and sends SIP release Indication message to Calling Side.
Figure 13 illustrates the flow chart of implementing according to of the present invention by the called subscriber equipment call release under framework shown in Figure 4, with reference to Figure 13, this flow process may further comprise the steps:
Step S1302, CSCF receive the called request message of Calling Side;
Step S1304, ICCF receive from CSCF and pass the called request message of coming;
Step S1306, ICCF set up called flow according to called number;
Step S1308, terminal called calledly set up in the process, release makes a call after the ring or after answering;
Step S1310, called UE sends to L-CAAF-n with release message, and it is busy that release message can carry the user, user's rejection, cause values such as the normal on-hook of user also can be the cause values of the called process of removing of base station initiation;
Step S1312, L-CAAF-n send USSD by HSS to ICCF and discharge Indication message by session control path USSD, and described release Indication message is the cause value among the step S1310;
Step S1314, ICCF send out SIP by CSCF to MGCF and discharge Indication message, described SIP discharge Indication message can according to the called subscriber whether answer for: answering the Called Onhook of initiating the back is the SIP byebye message, and not answering then is SIP cancellation message; Also can be mapped as the release Indication message of SIP according to the release cause value that step S1310 carries;
Step S1316, MGCF discharge Indication message with SIP and are mapped as the ISUP release message and send to VMSC;
Step S1318, VMSC sends release message to L-CAAF-n;
Step S1320, in the message of ICCF in receiving step S1312, the release cause value that step S1312 is carried is mapped as SIP release Indication message, sends to CSCF;
Step S1322, CSCF discharges the supplementary service that Indication message is delivered to the application server triggered response by initial filter standard or norm with SIP, and sends SIP release Indication message to Calling Side.
As can be seen, take method of the present invention from above-mentioned flow process, realized called releasing process, the supplementary service that the corresponding called of the IMS centralized traffic that CS inserts is discharged obtains centralized control in the IMS territory, satisfied the demand of IMS centralized traffic control.
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. In the IMS centralized traffic by the method for called subscriber equipment call release, it is characterized in that, may further comprise the steps:
    Step S302, when called subscriber equipment was initiated call release, described called subscriber equipment was sent to IMS circuit domain control function module with the call release cause message; And
    Step S304, described IMS circuit domain control function module is discharged into the calling of Calling Side and the calling of arriving callee side according to described call release cause message.
  2. 2. method according to claim 1 is characterized in that, in described step S302, described called subscriber equipment is sent to IMS circuit domain control function module with the call release cause message by the session control path.
  3. 3. method according to claim 1 is characterized in that, described step S304 may further comprise the steps:
    Step S304-2, described IMS circuit domain control function module is mapped as the release Indication message with described call release cause message, and described release Indication message is sent to call session control function module;
    Step S304-4, described call session control function module is sent to the MGCF module with described release Indication message, and described call session control function module sends described release Indication message to described Calling Side, and described Calling Side discharges described calling;
    Step S304-6, described MGCF module is mapped as release message with described release Indication message, and sends it to the Visited Mobile Switching Center module; And
    Step S304-8, described Visited Mobile Switching Center module sends described release message to described callee side, and described callee side discharges described calling.
  4. 4. method according to claim 3 is characterized in that, described step S304-4 is further comprising the steps of:
    Described call session control function module is sent to application server by initial filter criteria with described release Indication message and triggers corresponding supplementary service.
  5. 5. method according to claim 3 is characterized in that, for the subscriber equipment of non-IMS centralized traffic, described step S302 is further comprising the steps of:
    Described calling release cause message is sent to the local circuit territory inserts the adaption function module, and described local circuit territory access adaption function module is sent to described IMS circuit domain control function module by the session control path with described calling release cause message.
  6. 6. method according to claim 5 is characterized in that, for the subscriber equipment of non-IMS centralized traffic, described step S304 is further comprising the steps of:
    Described Visited Mobile Switching Center module is sent to the local circuit territory with described release message and inserts the adaption function module.
  7. 7. according to each described method among the claim 3-6, it is characterized in that described release Indication message is a session initiation protocol signaling Indication message, and described release message is an integrated digital service-user part signaling release message.
  8. 8. method according to claim 1 is characterized in that, described calling release cause message comprises that the user is busy, user's rejection, normal release and the removing that initiates the base station.
  9. 9. method according to claim 7, it is characterized in that the resource that the described session initiation protocol signaling Indication message that is sent to described MGCF module by described IMS circuit domain control function module comprises the Called Onhook of answering the back and initiating, do not answer, the user is busy, the called subscriber is temporarily unavailable and initiate the base station is unavailable.
  10. 10. method according to claim 7, it is characterized in that the described session initiation protocol signaling Indication message that is sent to described Calling Side by described call session control function module comprises that the unavailable and user of called subscriber busy, called subscriber are temporarily unavailable, initiate the base station resource answers the back and discharges called.
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US20200228578A1 (en) * 2017-05-19 2020-07-16 Huawei Technologies Co., Ltd. Call Setup Method and Apparatus
US20190364412A1 (en) * 2018-05-25 2019-11-28 Mediatek Inc. Apparatus and method for pdu session establishment restriction in emergency registration

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