CN1964344B - A method and device to control call conversation - Google Patents
A method and device to control call conversation Download PDFInfo
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- CN1964344B CN1964344B CN200610123890A CN200610123890A CN1964344B CN 1964344 B CN1964344 B CN 1964344B CN 200610123890 A CN200610123890 A CN 200610123890A CN 200610123890 A CN200610123890 A CN 200610123890A CN 1964344 B CN1964344 B CN 1964344B
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Abstract
The disclosed control device for calling dialogue comprises: a message receiving unit to receive calling dialogue request, a detection unit to detect whether there is called label in all received requests and output result; a first controller to control the procedure to execute called process when there is called label; and a second controller to add the called label and control the procedure to execute the primary calling process when there is no called label. This invention is simple.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and the device of CSCF in a kind of moving communicating field.
Background technology
IP Multimedia System (IMS, IP Multimedia Subsystem) be the key technology of next generation network evolution, can provide the functional entity of multimedia service to form by all, comprise the set of the functional entity relevant with carrying with signaling, support the fixing access that inserts and move, the development of Internet development and radio communication is combined, provide based on the multimedia service of application, service and agreement.In the evolution of next generation network, be the new tool and the developing direction of the network integration and integrated services.
At present, IMS is based on 3G (Third Generation) Moblie standard (3GPP, 3G Partnership Project) core network packet-domain (PS, Packet Switched Domain), be used for transmission session initializtion protocol (SIP, Session Initiation Protocol) call control signalling and telecommunications data traffic.Wherein, the SIP call control signalling will transmit according to user's configuration between the CSCF in the IMS framework (CSCF, Call Session ControlFunction).Current, different according to function and present position in network, CSCF is divided into three network elements, proxy CSCF (P-CSCF, Proxy-Call Session ControlFunction), inquiry CSCF (I-CSCF, Interrogation-Call Session Control Function) and serving CSCF (S-CSCF, Serving-Call Session Control Function), wherein:
P-CSCF be among the IMS with first tie point of user, agent functionality is provided, i.e. call accepted conversation request is also transmitted them, also can provide user agent function, promptly interrupts under abnormal conditions and the independent call session that produces; S-CSCF is in the control core status in the IMS core net, be responsible for register and authentication and session control to the user, execution is at calling terminal and called end IMS user's basic session routing function, and, when satisfying, condition proceeds to triggering of value-added service route and professional control alternately according to the IMS triggering rule that the user contracts; The critical point node of the similar IMS of I-CSCF provides topology hiding function between distribution, routing inquiry and the IMS territory of user's service node S-CFCS; The call session flow process that is defined in the calling terminal execution is a calling procedure, and the call session flow process of carrying out at called end is a called flow.
Current, utilize CSCF that the call session flow process is controlled, the method for finishing the execution of session routing function and user's signing service comprises:
Register flow path: P-CSCF sends registration Register information to S-CSCF, is with a called identification Term in this log-on message; When the S-CSCF under the I-CSCF ownership receives described log-on message, will preserve this called identification Term, and in replying to the registration reply message of P-CSCF, be with a calling identification Orig; P-CSCF preserves the calling identification Orig from S-CSCF.
Call flow: when P-CSCF receives the call session request message, judge in the message that receives and whether comprise called identification Term, if do not comprise, control session flow performing calling procedure, and when transmitting described conversation message and go out with on the calling identification Orig that preserves of registration phase; Otherwise, control session flow performing called flow; When S-CSCF receives conversation request message, judge in the message that receives and whether comprise calling identification Orig, if do not comprise, control session flow performing calling procedure, otherwise, control session flow performing called flow, and when transmitting described conversation message and go out with on the called identification Term. that preserves of registration phase
Prior art is cooperated jointly by P-CSCF, I-CSCF and three CSCF of S-CSCF, in conversation procedure, identify by detecting calling and called, can judge correctly that the session flow process is calling procedure or called flow, according to judged result, control session flow performing calling procedure or control session flow performing called flow then.But the realization of the prior art CSCF needs the fellowship of P-CSCF, I-CSCF and three CSCF network elements of S-CSCF, and implementation is too complicated, and the difficulty of network operation and management is big.
Summary of the invention
Embodiment of the invention technical problem to be solved is, the control method of a kind of CSCF device and call session flow process is provided, and realizes the control of call session flow process in better simply mode.
In order to solve the problems of the technologies described above, a kind of CSCF device that the embodiment of the invention proposes comprises:
The message sink unit is used for the receipt of call conversation request message;
Detecting unit is used for detecting the described conversation request message that described message sink unit receives and whether comprises called identification, and output relevant detection result;
First control unit is used for when described detecting unit detects described conversation request message and comprises called identification, control session flow performing called flow;
Second control unit is used for when described detecting unit detects described conversation request message and do not comprise called identification, is that described conversation request message is added called identification, and control session flow performing calling procedure.
Wherein, described detecting unit comprises first judging unit and second judging unit, wherein:
First judging unit, be used for judging whether conversation request message that described message sink unit receives comprises is used to carry the message field of user ID and exports first judged result or second judged result, described first judged result is indicated and is not comprised called identification in the described conversation request message, and described second judged result is indicated and comprised described message field in the described conversation request message;
Second judging unit, be used to receive described second judged result, judge whether comprise called identification in the described message field and export the 3rd judged result or the 4th judged result, described the 3rd judged result is indicated in the described conversation request message and is comprised called identification, and described the 4th judged result is indicated and do not comprised called identification in the described conversation request message.
Wherein, described second control unit comprises first supplementary units, second supplementary units and caller control unit, wherein:
First supplementary units is used for when receiving described first judged result, adds described message field and export first and replenish the result in described conversation request message, and described first to replenish the result be the conversation request message that comprises described message field;
Second supplementary units is used for adding called identification in the described message field of described conversation request message when receiving the described first additional result and/or described second judged result;
Caller control unit links to each other with described second supplementary units, is used to control session flow performing calling procedure.
Correspondingly, the embodiment of the invention also provides the method for utilizing described CSCF device controlling call session flow process, comprising:
The receipt of call conversation request message, judge and whether comprise called identification in the described conversation request message, if comprise described called identification then control session flow performing called flow, if do not comprise described called identification then add called identification for described conversation request message, and control session flow performing calling procedure.
Wherein, determine that the condition that comprises called identification in the described conversation request message comprises:
Comprise in the described conversation request message and be used for carrying the message field of user ID and the address message of described message field comprises called identification.
Wherein, determine that the condition that does not comprise called identification in the described conversation request message comprises:
Do not comprise the message field that is used to carry user ID in the described conversation request message, and/or
Comprise in the described conversation request message in the address message of described message field and described message field and do not comprise called identification.
Wherein, the step for described conversation request message interpolation called identification specifically comprises:
Do not generate described message field and in described message field, add called identification when being used to carry the message field of user ID when not comprising in the described conversation request message;
When comprising described message field in the described conversation request message, in described message field, add called identification.
Wherein, the described message field that is used to carry user ID is the route header field.
Wherein, described control session flow performing calling procedure comprises the caller route that control is carried out the caller signing service and controlled described conversation request message; Described control session flow performing called flow comprises the called route that control is carried out called signing service and controlled described conversation request message.
Wherein, described call session request message is a conversation initialization protocol message.
Implement the embodiment of the invention, have following beneficial effect:
Whether comprise called identification in the call session request message that the embodiment of the invention receives by detection, can judge correctly that the session flow process is calling procedure or called flow, then according to judged result, control session flow performing calling procedure or called flow have been realized the control of call session flow process in better simply mode.
Description of drawings
Fig. 1 is the simplified structure schematic diagram of embodiment of the invention CSCF device;
Fig. 2 is the detailed structure schematic diagram of embodiment of the invention CSCF device;
Fig. 3 is the control method flow chart of embodiment of the invention call session flow process;
Fig. 4 is an embodiment of the invention call session system simplification structural representation.
Embodiment
IMS is based on the 3G (Third Generation) Moblie standard 3GPP core network packet-domain PS, is used for call session control signaling and the telecommunications data traffic of transmission session initializtion protocol SIP.Wherein, transmit according to user's configuration on the CSCF CSCF of call session control signaling in the IMS framework.The embodiment of the invention provides a kind of CSCF device and utilizes described device to carry out the method for call session control, whether comprise called identification in the call session request message that receives by detection, can judge correctly that the session flow process is calling procedure or called flow, then according to judged result, control session flow performing calling procedure or called flow have been realized the control of call session flow process in better simply mode.
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Fig. 1 is the simplified structure schematic diagram of embodiment of the invention CSCF device.The CSCF device comprises message sink unit 10, detecting unit 20, first control unit 30 and second control unit 40 in the present embodiment, wherein:
Detecting unit 20 is used for detecting the conversation request message that described message sink unit 10 receives and whether comprises called identification, and output relevant detection result; Called identification is a marker character, is used to characterize the flow state of current sessions flow process, in the present embodiment, when described detecting unit 20 detects when comprising called identification in the described conversation request message, shows that the session flow process is a called flow; When described detecting unit 20 detects when not comprising called identification in the described conversation request message, show that the session flow process is a calling procedure.In the 3GPP agreement, adopt mark Term to represent called identification.
Fig. 2 is the detailed structure schematic diagram of embodiment of the invention CSCF device; As shown in the figure, in the present embodiment, detecting unit 20 comprises that first judging unit 201 and second judging unit, 202, the second control units 40 comprise first supplementary units 401, second supplementary units 402 and caller control unit 403, wherein:
First supplementary units 401 is used for when receiving described first judged result, adds described message field and export first and replenish the result in described conversation request message, and described first to replenish the result be the conversation request message that comprises described message field;
In the described conversation request message Invite message of described first judging unit, 201 judgements, do not comprise the Route territory, show and do not comprise the message field that is used to carry user ID in this message, described first supplementary units 401 receives when not comprising the judged result in Route territory in the described conversation request message of judgement of described first judging unit 201, be used to described conversation request message Invite message to add the Route territory, and the described conversation request message Invite message that has described message field Route territory is sent to second supplementary units 402.Adding the Route territory also is used to carry the message field of user ID with regard to having added for described conversation request message.
Second supplementary units 402 is used for adding called identification in the described message field of described conversation request message when receiving the described first additional result and/or described second judged result; When not comprising called identification Term in the message field Route territory of described second judging unit, 202 judgement conversation request message Invite message, show that the session flow process is a calling procedure, judged result can be sent to second supplementary units 402, when second supplementary units 402 receives the judged result of described second judging unit 202, be used for adding called identification Term in the Route territory of described conversation request message Invite message, specific practice is: the user name of the domain name addresses that carry in the Route territory in the Invite message is partly used called identification Term; When described first supplementary units 401 is that described conversation request message Invite message is added the Route territory, after the described conversation request message Invite message that has described message field Route territory sent to second supplementary units 402, this the second supplementary units 402 also user name of the domain name addresses of carrying of the Route territory in Invite message is partly used Term, realizes called identification Term is added among the message field Route.
Fig. 3 is the control method flow chart of embodiment of the invention call session flow process; The method of this embodiment adopts above-mentioned CSCF device controlling call session flow process, and the concrete implementation step of this method is as follows in the present embodiment:
Step S100, the receipt of call conversation request message; Because the IP-based SIP control protocol of the unified employing of the professional control of IMS, the conversation request message that the conversation request message that this step receives can send for the equipment of supporting Session Initiation Protocol, also can come for supporting the H.323/BICC/ISUP process MGCF (MGCF of the equipment transmission of agreement, Media Gateway Control Function) and IP multimedia-media gateway (IM-MGW, IMS-Media Gateway Function) be converted to the conversation request message of Session Initiation Protocol message.According to Session Initiation Protocol, the call session request message is defined as Invite message.
Step S101 judges in the described conversation request message that receives whether comprise the message field that is used to carry user ID, if the judgment is Yes, and execution in step S102; Otherwise execution in step S103. is in the 3GPP agreement, adopt mark Term to represent called identification, a kind of mode of carrying called identification Term is: the user name part that called identification Term is placed the domain name addresses that the Route territory of Invite message carries, therefore, when step S100 received described call session request message Invite message, this step S101 judged that whether comprising in this message that the Route territory just can be determined whether to comprise in this message is used to carry the message field of user ID.
Step S102 judges whether comprise called identification in the described message field, and if the judgment is Yes, execution in step S106 stops; Otherwise, execution in step S104.When comprising the Route territory in the described Invite message that receives of described step S101 judgement, show and comprise in the described conversation request message Invite message and be used to carry the message field of user ID, this step S102 is used for further judging whether described message field Route territory comprises called identification Term, because called identification Term is placed in the user name part of the domain name addresses of carrying in the Route territory, therefore, this step S102 judges whether the user name of domain name addresses is Term, just can judge in the described message field Route territory whether comprised called identification.
Step S103 is for described conversation request message interpolation is used to carry the message field of user ID; When judging in the described conversation request message Invite message, step S101 do not comprise the Route territory, show and do not comprise the message field that is used to carry user ID in this message, this step S103 is used to described conversation request message Invite message to add the Route territory, adds the Route territory and also is used to carry the message field of user ID with regard to having added for described conversation request message.
Step S104 adds called identification in described message field; When not comprising called identification Term in the message field Route territory of described step S102 judgement conversation request message Invite message, show that the session flow process is a calling procedure, this step S104 is used for adding called identification Term in the Route territory of described conversation request message Invite message, and specific practice is: the user name of the domain name addresses that carry in the Route territory in the Invite message is partly used called identification Term; When step S103 is after described conversation request message Invite message is added the Route territory, the user name of the domain name addresses that this step S104 also can carry in the Route territory in the Invite message is partly used Term, realizes called identification Term is added among the message field Route.
Step S105, control session flow performing calling procedure stops; Described control session flow performing calling procedure comprises the caller route that control is carried out the caller signing service and controlled described conversation request message.Described caller signing service comprises the various call session value-added services that the calling subscriber registers; The caller route of the described conversation request message of described control is for correctly to send to opposite end CSCF device with described conversation request message.
Step S106, control session flow performing called flow; Described control session flow performing called flow comprises the called route that control is carried out called signing service and controlled described conversation request message.Described called signing service comprises the various call session value-added services that the called subscriber registers; The called route of the described conversation request message of described control is for correctly to send to terminal called with described conversation request message.
Compared with prior art, the embodiment of the invention only can correctly be judged the calling and called flow process by detecting having or not of called identification, and implementation is simple.
Further describe below in conjunction with a simple session flow system how carrying out call session control in the session flow process.
Fig. 4 is an embodiment of the invention call session system simplification structural representation.As shown in the figure, the call session system comprises terminal 1, CSCF device 1, terminal 2 and calls conversation control function device 2 in the present embodiment, wherein, terminal 1 and terminal 2 are used to the conversation request that makes a call, and CSCF device 1 and CSCF 2 are used for the execution of controlling call session flow process.
Is example with terminal 1 to terminal 2 conversation request that makes a call, when terminal 1 when terminal 2 makes a call conversation request, according to registered in advance information, CSCF device 1 at first receives this conversation request message, when CSCF device 1 receives conversation request message, judge whether comprise called identification in the described conversation request message, if comprise, control session flow performing called flow; Otherwise, for described conversation request message is added called identification, and control session flow performing calling procedure;
In this example, this conversation request message derives from terminal 1, do not carry called identification, so the result that call session control device 1 is judged is not for comprising called identification in the conversation request message, then described CSCF device 1 can add called identification for described conversation request message, and control session flow performing calling procedure; Described control session flow performing calling procedure comprises the caller route that control is carried out the caller signing service and controlled described conversation request message, and in this example, described caller signing service comprises the various call session value-added services that the calling subscriber registers; The caller route of the described conversation request message of described control is for correctly to send to opposite end CSCF device 2 with described conversation request message.
Under the control of described CSCF device 1, described terminal 1 obtains the various call session value-added service data of registration, described conversation control function device 2 receives described conversation request message, when CSCF device 2 receives described message, judge whether comprise called identification in the described message equally, if comprise, control session flow performing called flow; Otherwise, for described conversation request message is added called identification, and control session flow performing calling procedure;
In this example, this conversation request message derives from call session control device 1, carry called identification, so the result that CSCF device 2 is judged comprises called identification in the described conversation request message, then described CSCF device 2 can be controlled session flow performing called flow; Described control session flow performing called flow comprises the called route that control is carried out called signing service and controlled described conversation request message.In this example, described called signing service comprises the various call session value-added services that the called subscriber registers; The called route of the described conversation request message of described control is for correctly to send to terminal called 2 with described conversation request message.
Under the control of described CSCF device 2, terminal 2 finally receives described conversation request message, and obtains the various call session value-added service data of registration.
More than disclosed only be preferred embodiment of the present invention, can not limit the present invention's interest field with this, therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. a CSCF device is characterized in that, comprising:
The message sink unit is used for the receipt of call conversation request message;
Detecting unit is used for detecting the described conversation request message that described message sink unit receives and whether comprises called identification, and output relevant detection result;
First control unit is used for when described detecting unit detects described conversation request message and comprises called identification, control session flow performing called flow;
Second control unit is used for when described detecting unit detects described conversation request message and do not comprise called identification, is that described conversation request message is added called identification, and control session flow performing calling procedure.
2. CSCF device as claimed in claim 1 is characterized in that, described detecting unit comprises first judging unit and second judging unit, wherein:
First judging unit, be used for judging whether conversation request message that described message sink unit receives comprises is used to carry the message field of user ID and exports first judged result or second judged result, described first judged result is indicated and is not comprised called identification in the described conversation request message, and described second judged result is indicated and comprised described message field in the described conversation request message;
Second judging unit, be used to receive described second judged result, judge whether comprise called identification in the described message field and export the 3rd judged result or the 4th judged result, described the 3rd judged result is indicated in the described conversation request message and is comprised called identification, and described the 4th judged result is indicated and do not comprised called identification in the described conversation request message.
3. CSCF device as claimed in claim 2 is characterized in that, described second control unit comprises first supplementary units, second supplementary units and caller control unit, wherein:
First supplementary units is used for when receiving described first judged result, adds described message field and export first and replenish the result in described conversation request message, and described first to replenish the result be the conversation request message that comprises described message field;
Second supplementary units is used for adding called identification in the described message field of described conversation request message when receiving the described first additional result and/or described second judged result;
Caller control unit links to each other with described second supplementary units, is used to control session flow performing calling procedure.
4. the control method of a call session flow process is characterized in that, comprising:
The receipt of call conversation request message, judge and whether comprise called identification in the described conversation request message, if comprise described called identification then control session flow performing called flow, if do not comprise described called identification then add called identification for described conversation request message, and control session flow performing calling procedure.
5. method as claimed in claim 4 is characterized in that, determines that the condition that comprises called identification in the described conversation request message comprises:
Comprise in the described conversation request message and be used for carrying the message field of user ID and the address message of described message field comprises called identification.
6. method as claimed in claim 4 is characterized in that, determines that the condition that does not comprise called identification in the described conversation request message comprises:
Do not comprise the message field that is used to carry user ID in the described conversation request message, and/or
Comprise in the described conversation request message in the address message of described message field and described message field and do not comprise called identification.
7. as claim 4 or 6 described methods, it is characterized in that the step of adding called identification for described conversation request message specifically comprises:
Do not generate described message field and in described message field, add called identification when being used to carry the message field of user ID when not comprising in the described conversation request message;
When comprising described message field in the described conversation request message, in described message field, add called identification.
8. method as claimed in claim 7 is characterized in that, the described message field that is used to carry user ID is the route header field.
9. method as claimed in claim 4 is characterized in that, described control session flow performing calling procedure comprises the caller route that control is carried out the caller signing service and controlled described conversation request message; Described control session flow performing called flow comprises the called route that control is carried out called signing service and controlled described conversation request message.
10. method as claimed in claim 4 is characterized in that, described call session request message is a conversation initialization protocol message.
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| CN200610123890A CN1964344B (en) | 2006-11-30 | 2006-11-30 | A method and device to control call conversation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610123890A CN1964344B (en) | 2006-11-30 | 2006-11-30 | A method and device to control call conversation |
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| CN1964344A CN1964344A (en) | 2007-05-16 |
| CN1964344B true CN1964344B (en) | 2010-05-12 |
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| CN200610123890A Expired - Fee Related CN1964344B (en) | 2006-11-30 | 2006-11-30 | A method and device to control call conversation |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581900A (en) * | 2003-08-07 | 2005-02-16 | 微软公司 | Dynamic photo caller identification |
| CN1741557A (en) * | 2004-08-23 | 2006-03-01 | 华为技术有限公司 | Method for querying called in block area |
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2006
- 2006-11-30 CN CN200610123890A patent/CN1964344B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581900A (en) * | 2003-08-07 | 2005-02-16 | 微软公司 | Dynamic photo caller identification |
| CN1741557A (en) * | 2004-08-23 | 2006-03-01 | 华为技术有限公司 | Method for querying called in block area |
Non-Patent Citations (2)
| Title |
|---|
| 王雨岗，徐家恺，隆志华.SIP协议的消息过程.微处理机 4.2004,(4),58-60. |
| 王雨岗,徐家恺,隆志华.SIP协议的消息过程.微处理机 4.2004,(4),58-60. * |
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