CN1889542B - Internetwork calling continuing method - Google Patents
Internetwork calling continuing method Download PDFInfo
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- CN1889542B CN1889542B CN200510098818.2A CN200510098818A CN1889542B CN 1889542 B CN1889542 B CN 1889542B CN 200510098818 A CN200510098818 A CN 200510098818A CN 1889542 B CN1889542 B CN 1889542B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000011664 signaling Effects 0.000 claims abstract description 98
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 6
- 230000000717 retained effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/104—Signalling gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4557—Directories for hybrid networks, e.g. including telephone numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1095—Inter-network session transfer or sharing
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Abstract
A call access method between networks includes packaging called identification in the first network into related signaling of the second network when call signaling access from the first network to the second network is carried out by gateway device if called identification in two network can not be corresponded one by one, enabling to newly add cell in relevant signaling of the second network in order to store called identification in the first network.
Description
Technical Field
The invention relates to a communication technology, in particular to a cross-network call connection technology.
Background
With the rapid advance of communication technology, people's expectations and requirements for communication are increasing, and the characteristics of high bandwidth, multiple services, high quality and the like of the third Generation (3rd Generation, abbreviated as "3G") mobile communication system are attracting the consumer market greatly.
In 3G network architectures, mobile networks are no longer limited to circuit-switched approaches. Various networks such as packet domain and Internet Protocol (IP) multimedia subsystems have been developed. Both the circuit domain and the packet domain have their functions and features. The circuit domain is mainly used for providing circuit type service connection for users, and the packet domain is used for providing packet type service connection for users.
To implement interworking between different types of networks, a Gateway device having a cross-network call connection capability is required, such as a relay Gateway having a Media Gateway Control Function (MGCF), an Access Gateway having an Access Gateway Control Function (AGCF), and the like.
The coding mode of the user identifier is also different among different types of networks. For example, in the circuit domain, the user is identified as "1133889"; in the packet field, the user is identified as "168 server. The corresponding relation of the user identifiers in the circuit domain and the grouping domain is stored in the user identifier comparison query equipment. Specifically, the user id contrast query device stores the user or network id contrast relationship between two or more network DOMAINs, receives the query application, and returns the result, and commonly used user id contrast query devices include an Electronic coding (ENUM) server, a DOMAIN name service system (DOMAIN NAME SYSTEM, DNS) server, and the like.
The ENUM server combines the telephone number, internet domain name address and e-mail address which are most widely used in the communication all over the world, so that people can more conveniently and flexibly perform various telecommunication communications. The combination method is to combine the telephone number standard established by International Telecommunication Union (ITU) with the domain name address rule used on Internet, store the telephone number by DNS, and further use a telephone number to search the available service in the domain name system, so that the telephone number is combined with the domain name and the e-mail address, and the user can carry out various communications by using only one telephone number.
Currently, when a call is established between different networks, the identification of a called user in the call needs to be converted. For example, when a gateway device with cross-network call connection capability receives a call from a circuit domain, a called user identifier in the circuit domain is used to query a packet domain user identifier corresponding to the user identifier in a user identifier comparison query device, and the user identifier comparison query device returns a query result to the gateway device, and the gateway device initiates a call to the packet domain. For example, the gateway device receives a call in the circuit domain, the called subscriber identity of the call is "1680110", and the gateway device queries the subscriber identity in its corresponding packet domain against the subscriber identity in the query device. If the user identifier in the corresponding packet domain is "168 server. The flow is shown in figure 1.
In step 101, the circuit domain sends a call signaling to a gateway device MGCF having a cross-network call connection capability to perform cross-domain connection, where the signaling carries a called user identifier "1680110";
in step 102, the called user identifier in the circuit domain is used as an index, and the user identifier is inquired by referring to the inquiry equipment;
in step 103, the user identifier returns a response message after completing the query with respect to the querying device, where the message includes the query result, that is, the user identifier "168 server.
In step 104, the MGCF continues with the query result as the called subscriber identity of the call signaling in the packet domain. .
As will be understood by those skilled in the art, according to the above processing method, after the gateway device converts the subscriber identity, the call signaling initiated to the packet domain only contains the subscriber identity in the packet domain. However, in the user id comparison query device, the user ids in the circuit domain and the packet domain are sometimes one-to-many, that is, the user ids in different circuit domains may correspond to the same user id in the packet domain. Therefore, the method of using only the subscriber identity in the packet domain as the identity of the called subscriber may cause the called information to be lost.
On the other hand, if the subscriber identity in one packet domain is set to correspond to the subscriber identity in each circuit domain, the network will add a number of management functions accordingly, thereby increasing the network load.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide an inter-network call connection method, which can more conveniently avoid the loss of the called information during the inter-network call.
In order to achieve the above object, the present invention provides an inter-network call connection method, which comprises the following steps:
when the gateway device continues the cross-network call signaling from the first network to the second network, setting information representing the called identification in the first network in the first cell of the related call signaling of the second network; the related call signaling is simultaneously provided with information representing a called identifier in a second network;
when processing the related call signaling of the second network, the original call object of the calling subscriber can be determined by combining the called identification in the signaling and the information in the first information element.
When the gateway device continues the cross-network call signaling from the first network to the second network, the method also comprises the step of judging whether the called identification in the first network and the called identification in the second network can be in one-to-one correspondence, and if the called identification in the first network and the called identification in the second network can not be in one-to-one correspondence, the information representing the called identification in the first network is set in the first cell of the related call signaling of the second network.
In addition, in the method, the first cell is a newly added cell in the call signaling.
Furthermore, in the method, the first cell is implemented by expanding an original cell in the call signaling.
Further in the method, the first information element is implemented by reusing an original information element in the paging signaling.
Further in the method, the reused information element may be a "To" header when the call signaling is session initiation protocol signaling.
Further in the method, the reused cell may be a "P-Called-Party-ID" header field when the call signaling is session initiation protocol signaling.
Further in the method, the reused cell is a "UUI" cell when the call signaling is integrated services digital network subscriber part signaling.
Further in the method, the call signaling may be a session initiation protocol or an integrated services digital network user part protocol.
Further in the method, the first network is a packet domain network and the second network is a circuit domain network; or,
the first network is a circuit domain network and the second network is a packet domain network.
As can be seen from the comparison, the main difference between the technical solution of the present invention and the prior art is that, if the called identifiers in the two networks cannot be in one-to-one correspondence, the gateway device packs the called identifier in the first network into the related signaling of the second network when performing the call signaling connection from the first network to the second network. In order to store the called identifier in the first network, a new cell can be added to the related signaling of the second network, or the original cell can be expanded, or the original cell can be reused.
The difference in the technical scheme brings obvious beneficial effects that because the called identifier in the first network is retained in the cell of the signaling related to the second network, the original called information is retained, which makes it possible to determine the original call object of the calling subscriber in the subsequent processing.
Drawings
FIG. 1 is a flow chart illustrating a call connection method between networks in the prior art;
fig. 2 is a flow chart illustrating an inter-network call connection method according to the principles of the present invention;
fig. 3 is a flowchart illustrating an inter-network call connection method according to a first embodiment of the present invention;
fig. 4 is a flowchart illustrating an inter-network call connection method according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating an inter-network call connection method according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
In general, the core of the present invention may be embodied by fig. 2. As shown in fig. 2, first, in step 201, a first network sends a call signaling to a gateway device MGCF to perform cross-domain connection, where the call signaling carries a called identifier "1680110" of the first network. If the called identifier in the first network and the called identifier in the second network cannot be in one-to-one correspondence, step 202 is executed, and the MGCF queries the called identifier of the second network corresponding to the user identifier comparison query device (hereinafter, the "ENUM server" is taken as an example) such as an ENUM server by using the called identifier of the first network as an index; after the query is completed, in step 203, the ENUM server returns a response message to the MGCF, where the response message includes the query result "168 server. Next, in step 204, the MGCF continues with the query result as the called identifier in the second network call signaling, and the original called identifier "1680110" of the first network call signaling is also set in the first cell of the second network call signaling. Therefore, when the call signaling of the second network is processed, the initial call object of the calling user can be determined by combining the called identification '168 server.telecom.com' in the signaling and the information '1680110' in the first information element, so that the initial call object of the calling user can be determined in subsequent processing, and the problem of called information loss in cross-network calling is avoided. In order to pack the called identifier '1680110' in the first network into the call signaling of the second network, the present invention adds a new cell, or expands an original cell, or reuses an original cell in the call signaling of the second network.
A method for call connection between networks according to a first embodiment of the present invention is shown in fig. 3, which illustrates a scheme for storing a called identifier in a circuit domain network by adding a new cell to a call signaling of an IMS domain network according to the principle of the present invention, taking an IMS domain network and the circuit domain network as examples.
As shown in fig. 3, first, in step 301, the circuit domain network sends a call signaling, i.e., an Initial Address Message (IAM) to the MGCF, and performs cross-domain connection. The called identifier "1680110" of the circuit domain network is carried in the call signaling.
Since the called identifier of the circuit domain network and the called identifier of the IMS domain network cannot correspond to each other in this embodiment, in step 302, the MGCF queries the called identifier of the IMS domain network corresponding to the MGCF from the ENUM server by using the called identifier "1680110" of the circuit domain network as an index; after the query is completed, in step 303, the ENUM server returns a response message to the MGCF, where the response message includes the query result "168 server.
Thereafter, in step 304, MGCF continues with the query result "168 server.telecommunications.com" as the called identifier in the IMS domain network call signaling, and the IMS domain network call signaling also has the original called identifier "1680110" of the circuit domain network call signaling. Specifically, in this step, the request in the "INVITE" message fills in the result "168 server.telecommunications.com" returned by the ENUM server, and a new cell- "otheromanenumber" header field is added in the signaling, in which the called identifier "1680110" of the circuit domain network is filled. After receiving the call, the subsequent service server can judge the service type according to the original called identifier. It is noted that, as will be understood by those skilled in the art, a new cell is added, that is, a cell is added, and the name and semantics of the cell are different from those of other existing cells in the signaling.
Thereafter, when processing call signaling of the IMS domain network, the called identifier in the IMS domain call signaling in the signaling and the information in the newly added "OTHERDOMAINNUMBER" may be combined to determine the original call object of the calling subscriber. In this case, since the original called information is retained in the call signaling of the IMS domain network, it is possible to determine the original call object of the calling subscriber in the subsequent process.
Fig. 4 shows an inter-network call connection method according to a second embodiment of the present invention, which takes an IMS domain network and a circuit domain network as examples to illustrate a scheme for saving a Called identifier in a first network by reusing an original "P-Called-Party-ID" header field in a call signaling according to the principle of the present invention when the call signaling is a Session Initiation Protocol (SIP).
As shown in fig. 4, first, in step 401, the circuit domain network sends a call signaling, i.e. an Initial Address Message (IAM), to the MGCF for performing cross-domain connection. The called identifier "1680110" of the circuit domain network is carried in the call signaling.
Since the called identifier of the circuit domain network and the called identifier of the IMS domain network cannot correspond to each other in this embodiment, in step 402, the MGCF queries the corresponding called identifier of the IMS domain network from the ENUM server by using the called identifier "1680110" of the circuit domain network as an index; after the query is completed, in step 403, the ENUM server returns a response message to the MGCF, where the response message includes the query result "168 server.
Thereafter, in step 404, MGCF continues with the query result "168 server.telecommunications.com" as the called identifier in the IMS domain network call signaling, and the IMS domain network call signaling also has the original called identifier "1680110" of the circuit domain network call signaling. Specifically, in this step, the result "168 server.telecommunications.com" returned by the ENUM server is filled in the requestari in the "INVITE" message, and the Called identification "1680110" of the circuit domain network is filled in the "P-Called-Party-ID" header field of the message.
Thereafter, when processing call signaling of the IMS domain network, the Called identifier "168 server.telecommunications.com" in the IMS domain call signaling in the signaling and the information "1680110" in the header field of "P-Called-Party-ID" can be combined to determine the original call object of the calling Party. In this case, since the original called information is retained in the call signaling of the IMS domain network, it is possible to determine the original call object of the calling subscriber in the subsequent process.
It should be noted that, in this embodiment, when the call signaling is the session initiation protocol signaling, the Called identifier of the circuit domain network is stored by reusing the original "P-Called-Party-ID" header field in the call signaling, but the present invention is not limited thereto. Those skilled in the art will appreciate that so-called reuse, i.e., the use of original cells in signaling, is semantically invariant and used in new fields or scenarios.
Fig. 5 shows an inter-network call connection method according to a third embodiment of the present invention, which takes an IMS domain network and a circuit domain network as examples to illustrate a scheme for storing a called identifier in a first network by reusing an original "UUI" cell in a call signaling according to the principle of the present invention when the call signaling is an integrated services digital network User Part (ISDN User Part, abbreviated as "ISUP").
As shown in fig. 5, first, in step 501, the IMS domain network sends a call signaling, i.e., an "INVITE" message, to the MGCF, and performs cross-domain connection. The called identifier "myaddrhuawei.com" of the circuit domain network is carried in the call signaling.
Since the called identifier of the IMS domain network and the called identifier of the circuit domain network cannot correspond to each other in this embodiment, in step 502, the MGCF queries the ENUM server for the called identifier of the circuit domain network corresponding to the MGCF using the called identifier of the IMS domain network "myaddrhuawei.com" as an index; after the query is completed, in step 503, the ENUM server returns a response message to the MGCF, where the response message includes the query result "1681110", that is, the called identifier of the corresponding circuit domain network.
Thereafter, in step 504, the MGCF continues with the query result "1681110" as the called identifier in the circuit domain network call signaling, and the original called identifier "myaddrhuawei.com" of the IMS domain network call signaling is also set in the circuit domain network call signaling. Specifically, in this step, the result "1681110" returned by the ENUM server is filled in the Initial Address Message (IAM), and the called identity "myaddrhuawei.com" of the IMS domain network is filled in the "UUI" cell of this message.
Thereafter, when processing the call signaling of the circuit domain network, the called identifier "1681110" in the circuit domain call signaling in the signaling and the information "myaddrhuawei.com" in the "UUI" cell can be combined to determine the original call object of the calling subscriber. In this case, since the original called information is retained in the call signaling of the circuit domain network, it is possible to determine the original call target of the calling party in the subsequent processing.
The above describes the call signaling processing for the circuit domain network, and when processing the call signaling of the packet domain network, the embodiment also saves the called identifier of the packet domain network by reusing the original "UUI" cell in the call signaling.
It should be noted that, according to the principle of the present invention, in addition to reusing the original cell in the call signaling where the call is located and adding the cell in the call signaling, the purpose of saving the called identifier of the original network can be achieved by expanding the original cell in the call signaling.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. An inter-network call connection method, comprising the steps of:
when the gateway device continues the cross-network call signaling from the first network to the second network, setting information representing the called identification in the first network in the first cell of the related call signaling of the second network; the related call signaling is simultaneously provided with information representing a called identifier in a second network;
when processing the related call signaling of the second network, the information representing the called identification in the second network and the information representing the called identification in the first information element in the signaling are combined to determine the original call object of the calling user.
2. The method of claim 1, wherein when the gateway device connects the cross-network call signaling from the first network to the second network, the method further comprises the step of determining whether the called identifier in the first network and the called identifier in the second network can be in one-to-one correspondence, and if the called identifier in the first network and the called identifier in the second network cannot be in one-to-one correspondence, setting information representing the called identifier in the first network in the first cell of the related call signaling of the second network.
3. The method of claim 1, wherein the first cell is a new cell in the paging signaling.
4. The method of claim 1, wherein the first cell is implemented by expanding an original cell in the paging signaling.
5. The method of claim 1, wherein the first cell is implemented by reusing an original cell in the origination call signaling.
6. The method of claim 5, wherein the reused cell is a "To" header when the call signaling is session initiation protocol signaling.
7. The method of claim 5, wherein the reused cell is a "P-Called-Party-ID" header when the call signaling is Session initiation protocol signaling.
8. The method of claim 5, wherein the reused cell is a UUI cell when the call signaling is ISDN user part signaling.
9. The method of claim 3 or 4, wherein the call signaling is session initiation protocol or ISDN user part protocol.
10. The method according to any one of claims 1 to 8, wherein the first network is a packet domain network and the second network is a circuit domain network; or,
the first network is a circuit domain network and the second network is a packet domain network.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510098818.2A CN1889542B (en) | 2005-09-01 | 2005-09-01 | Internetwork calling continuing method |
| PCT/CN2006/001681 WO2007025435A1 (en) | 2005-09-01 | 2006-07-14 | A method and device for continuing the call between the networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510098818.2A CN1889542B (en) | 2005-09-01 | 2005-09-01 | Internetwork calling continuing method |
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| CN1889542A CN1889542A (en) | 2007-01-03 |
| CN1889542B true CN1889542B (en) | 2012-01-04 |
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| CN200510098818.2A Expired - Fee Related CN1889542B (en) | 2005-09-01 | 2005-09-01 | Internetwork calling continuing method |
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| CN101883344B (en) * | 2009-05-06 | 2013-09-25 | 华为技术有限公司 | Associated call splicing method among networks and business agent system |
| CN102118369A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Session processing method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231554A (en) * | 1997-10-02 | 1999-10-13 | 三星电子株式会社 | Eliminated DTMF signaling in integrated wireline-wireless system |
| US6266707B1 (en) * | 1998-08-17 | 2001-07-24 | International Business Machines Corporation | System and method for IP network address translation and IP filtering with dynamic address resolution |
| CN1373971A (en) * | 1999-09-10 | 2002-10-09 | 艾利森公司 | System and method for negotiation of multi-media capabilities across networks |
| CN1489354A (en) * | 2002-10-09 | 2004-04-14 | ����ͨѶ�ɷ�����˾ | Method and system for realizing inter communication of telecommunication business between isomerized networks |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002689A (en) * | 1996-11-22 | 1999-12-14 | Sprint Communications Co. L.P. | System and method for interfacing a local communication device |
| US6914899B2 (en) * | 2001-01-30 | 2005-07-05 | Estara, Inc. | Caller identification and voice/data synchronization for internet telephony and related applications |
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- 2005-09-01 CN CN200510098818.2A patent/CN1889542B/en not_active Expired - Fee Related
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- 2006-07-14 WO PCT/CN2006/001681 patent/WO2007025435A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231554A (en) * | 1997-10-02 | 1999-10-13 | 三星电子株式会社 | Eliminated DTMF signaling in integrated wireline-wireless system |
| US6266707B1 (en) * | 1998-08-17 | 2001-07-24 | International Business Machines Corporation | System and method for IP network address translation and IP filtering with dynamic address resolution |
| CN1373971A (en) * | 1999-09-10 | 2002-10-09 | 艾利森公司 | System and method for negotiation of multi-media capabilities across networks |
| CN1489354A (en) * | 2002-10-09 | 2004-04-14 | ����ͨѶ�ɷ�����˾ | Method and system for realizing inter communication of telecommunication business between isomerized networks |
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| WO2007025435A1 (en) | 2007-03-08 |
| CN1889542A (en) | 2007-01-03 |
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