WO2007025435A1 - A method and device for continuing the call between the networks - Google Patents

A method and device for continuing the call between the networks Download PDF

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Publication number
WO2007025435A1
WO2007025435A1 PCT/CN2006/001681 CN2006001681W WO2007025435A1 WO 2007025435 A1 WO2007025435 A1 WO 2007025435A1 CN 2006001681 W CN2006001681 W CN 2006001681W WO 2007025435 A1 WO2007025435 A1 WO 2007025435A1
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WO
WIPO (PCT)
Prior art keywords
network
called
call
signaling
information
Prior art date
Application number
PCT/CN2006/001681
Other languages
French (fr)
Chinese (zh)
Inventor
Wenyu Liu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN200510098818.2 priority Critical
Priority to CN 200510098818 priority patent/CN1889542B/en
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007025435A1 publication Critical patent/WO2007025435A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/12Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 characterised by the data terminal
    • H04L29/12009Arrangements for addressing and naming in data networks
    • H04L29/12047Directories; name-to-address mapping
    • H04L29/1216Directories for hybrid networks, e.g. including also telephone numbers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/02Communication control; Communication processing
    • H04L29/06Communication control; Communication processing characterised by a protocol
    • H04L29/0602Protocols characterised by their application
    • H04L29/06027Protocols for multimedia communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/15Directories; Name-to-address mapping
    • H04L61/157Directories for hybrid networks, e.g. including telephone numbers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1033Signalling gateways
    • H04L65/104Signalling gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1083In-session procedures

Abstract

A method and device for continuing the call between the networks can expediently avoid the loss of called information when calling across the network. In the method of present invention, if the called identifications of the two networks don’t have monogamy, the gateway device packs the called identification in the first network into the related signaling of the second network. In order to store the called identification of the first network, it is possible to add the cell or extend the original cell or reuse the original cell in the related signaling of the second network.

Description

Inter-network call connection method and a device

FIELD

The present invention relates to communication technologies, and particularly relates to a method and apparatus for call connection across the network.

BACKGROUND With the rapid development of communication technology, and it is desirable for communication are increasingly high requirements, third-generation (3rd Generation, said cartridge "3G") mobile communication system, high-bandwidth, multi-service, and so a very high attracting a large consumer market. In the 3G network architecture, a mobile network Pat no longer limited to the circuit-switched mode. Packet domain and network interconnection agreement (Internet Protocol, referred to as "IP") multimedia subsystem and other network came into being. Whether it is a circuit domain or packet domain, and all have their characteristic features. Field is used to connect the circuit to provide a circuit-based service to a user, a packet type field for providing a packet service to a user is connected. The relay gateway between different types of networks to realize the importance of an intercommunication call connection across the network capabilities of the network 'gateway device, such as having a media gateway control function (Media Gateway Control Function, referred to as "MGCF") having an access gateway control function (access gateway Control Function, said cartridge "AGCF") an access gateway. Between different types of networks, the user ID coding scheme is also different. For example, in the circuit domain, user ID is "1133889"; in the packet domain, user ID is "168 @ server.telecom.com". Correspondence between the user identifier of CS domain and PS domain stored in the user query identification control apparatus. Specifically, the user identifier against the user identifier mapping relationship or query the network device for storing two or more networks in the field, receiving a query request and returns the result. Common user identification device includes an electronic control coding query (ENUM, Electronic Numbering) server (referred to as "E UM server"), domain name system (Domain Name System, tube called "DNS") servers. ENUM server is easier when the world's most widely used communication telephone number and Internet domain address, e-mail addresses combine to make people performing a variety of telecommunication, flexible server. The combined method is to combine the ITU (International Telecommunications Union, referred to as "ITU") to develop telephone numbering standards and rules of domain name address used on the Internet, use DNS to store telephone numbers up further with a phone number in the domain name Find a system of services available methods, the telephone number and mail addresses combine users with only a phone number you can perform a variety of communications. Currently, a call is established between different networks, it is necessary to call the called user ID converted. For example, when the gateway device has the ability to continue the call across the network receives a call from the CS domain, the called user will be identified by the user identification circuit domain to query a control device which corresponds to a query packet domain user identifier, the user identifier control then returns query results inquiring device to the gateway device, initiates a call to the gateway device by the packet domain. For example, the gateway device receives the CS domain call, the called user of the call identifier is "1680110", the gateway device to the subscriber identity control device query its corresponding query packet domain user ID. If a user ID which corresponds to the packet domain of "168 @ server.telecom.com", then, the device query returns "168 @ server.telecom.com" to the gateway device, the gateway device and then to "168 @ server .telecom.com "as the identity of the called user to initiate call packet domain call. Process shown in Fig. In step 101, the CS domain call signaling sent to the gateway device having a cross-network call connection capability MGCF cross-domain connection, the signaling carries the called user ID "1680110"; in step 102, the circuit domain to be called user ID as an index, the user identification control inquiring device query; in step 103, the user identification control returns response message inquiring device query is complete, the message comprising a query result, i.e., the corresponding packet domain the user ID "168 @ server.telecom.com "; in step 104, MGCF query results to the call signaling connection as a packet domain called user ID. Those skilled in the art will generally be appreciated, the above processing method, the gateway device converts the user identification, to initiate a call signaling packet domain contains only user packets identified domain. However, the user identification control apparatus query, a user domain identification circuit and packet domain are sometimes many, that is, different user identification circuit domain may correspond to a same user identification packet domain. Therefore, only with the identity of the user packet domain husband called user ID # approach is likely to result in the loss of information called. On the other hand, if the user is a user ID provided for each domain, a circuit corresponding packet identifier field, the network will increase more respective management functions, thereby increasing the network load.

SUMMARY OF THE INVENTION The present invention provides a network connection between the calling device and method, makes it possible to more easily avoid the loss of information when the called call across the network. According to one aspect of the invention, there is provided an inter-network call connection method, comprising the steps of: at the gateway device a first network to a second network connection across the network call signaling, call signaling provided on behalf of the second network called identifier information of the first network. Wherein further comprising determining whether the called identifier called a first network identifier and the second network may - correspond, if not, the first network on behalf of the called set identified in the call signaling of the second network Information. In the method, while processing the call signaling of the second network, the identifier of the called binding and signaling information to determine the caller's original call destination. Further, in the method, the new cell information provided in the call signaling. Further, in the method, the information set of the original information elements in call signaling in the expansion. Further, in the method, the information provided in the original cell reuse the call signaling. Further, in the method, when the call signaling is a Session Initiation Protocol signaling the cell to be reused may be a "To" header field. Further, in the method, when the call signaling is a Session Initiation Protocol signaling the cell to be reused may be "P-Called-Party-ID" header field. Further, in the method, when the call signaling is an integrated services digital network user part of the signaling, the cell is to be reused "UUI" cell. Further, in the method, the call signaling may be a session initiation protocol or the Integrated Services Digital Network User Part protocol. Further, in the method, the first network is a packet domain network, the second network is a circuit domain network; or

The first network is a circuit domain network, the second network is a packet domain network.

According to another aspect of the present invention, a gateway call connection means for connecting a first network call signaling across the network to the second network; comprising:

Called the first network identification information setting unit for setting information representing a first network identifier of the called call signaling sent to the second network.

Wherein, in the first network identification information setting unit called the information "UUI" cell integrated services digital network user part of the signaling.

Wherein, in the first network identification information setting unit called session initiation protocol signaling information set "To" header field or "P-Called-Party-ID" field of the header. Wherein the connecting device is a media gateway control function entity. By comparison found that the main difference between the aspect of the present invention and the prior art is that, if the called identifier can not correspond two networks, the call signaling gateway device performing a first network to a second network connection when the called identifier which is packaged in a first network the second network related signaling. In order to identify the called a first storage network, the second signaling can add the relevant network information element or the extended information element of the original, the original cell or reuse.

Difference in this solution brings obvious benefit that since the called identifier in the first network is retained in the cell of the second network-related signaling, the original called party information is retained, this makes the subsequent processing of the call determined first caller objects possible. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic flow diagram of the prior art method of inter-network call connection; FIG. 2 is a schematic flow diagram of a method according to the call connection between the network of the principles of the present invention; FIG. 3 is a first embodiment of the present invention a network call connection method between a schematic flow; FIG. 4 is a schematic view of a second embodiment of the inter-network call connection method of the present invention process;

5 is a schematic view of a third embodiment of the inter-network call connection method of the present invention process.

DETAILED DESCRIPTION To make the objectives, technical solutions, and advantages of the present invention will become more apparent below in conjunction with the accompanying drawings of the present invention will be further described in detail. In general, the core of the present invention may be embodied in FIG. As shown, first in step 201, the first network to the gateway device 2 transmits call signaling MGCF, cross-domain connection, wherein the call signaling carries a first network identifier called "1,680,110." If the called identifier called a first network identifier and a second network can not - correspond, step 202, MGCF called identifier to a first network as an index, such as a user ID to the control server or the like ENUM inquiring device (are "the ENUM server" as an example hereinafter) called identifier query their respective second network; after query, at step 203, ENUM server returns a response message to the MGCF, the response message contains the query results " 168 @ server.telecom. com ", i.e. the called party identification corresponding to the second network. Next, at step 204, MGCF called ID as the query result to the second network connection is a call signaling and the second signaling network call the first cell is also provided with a first network call signaling identifies the original called "1,680,110." Accordingly, when processing the call signaling of the second network, the signaling may be combined in the called ID "168 @ server.telecom.com" information in the first cell and "1680110" is determined first caller incoming call destination, it is possible to determine the caller's original call destination in the subsequent processing, inter-network calls a called avoid loss of information. Embodiments of the present invention, in order to identify the first network called "1680110" is packaged in the second call signaling network, adding a new information element in the call signaling of the second network, or channel extension of the original yuan, or reuse of the original cell. According to a first embodiment of the inter-network call connection method of the present invention is shown in Figure 3, in which FIG.

IMS-domain network and a circuit domain network to illustrate the principles of the invention, the call signaling channel by the new network element in the IMS domain, the called program to save the identity of the CS domain network. 3, first, in step 301, the circuit domain network transmits call signaling to the MGCF, i.e., the start address message (Initial Address Message, said cartridge "IAM"), cross-domain connection. The circuit domain network carries the called identifier in the call signaling "1,680,110." Since the present embodiment identifies the identifier of the called and the called IMS-domain network according to the circuit domain network can not correspond, so at step 302, MGCF to the called identification circuit domain network of "1680110" for the index, to ENUM server queries its corresponding identification of the called IMS-domain network; after query, at step 303, ENUM server returns a response message to the MGCF, the response message contains the query results "168 @ server.telecom.com", i.e. corresponding to the IMS domain of the network is called identity. Thereafter, at step 304, MGCF query results to the connection call as an IMS-domain network signaling called ID "168 @ server.telecom.com", and, in the IMS-domain network call signaling is also provided with a circuit domain network call identification signaling the original called "1,680,110." Specifically, in this step, requestUri the "INVITE" message to fill in ENUM server returns the result of "168 @ server.telecom.com", and the new signaling in a cell "OTHERDOMAINNUMBER" header field, after filling the circuit domain network wherein the called ID "1680110" subsequent service server receives the call, depending on the type of the original called service identifier determination. It should be noted that those of ordinary skill in the art will appreciate that the so-called new, i.e. add a new cell, the cell's name and semantics, unlike other existing cell signaling. Thereafter, when processing the call signaling IMS-domain network, it may be incorporated in the signaling information identifying the called IMS domain call signaling, as well as newly added "OTHERDOMAINNUMBER", determining the calling subscriber calls the original object. In this case, since the original called party information is retained in the call signaling in the IMS domain of the network, so that the subsequent processing of the call determined first caller objects possible. According to a second embodiment of the inter-network call connection method of the present invention As shown, the IMS-domain network and FIG circuit domain network 4 as an example, illustrates a principle of the invention, when the call signaling in a Session Initiation Protocol (Session Initation Protocol, referred to as "SIP"), the call signaling by reusing any original "P-called-Party-ID" header field to a first embodiment save the called network identity. 4, first, in step 401, the circuit domain network transmits call signaling to the MGCF, i.e., the start address of the message (the IAM), cross-domain connection. The circuit domain network carries the called identifier in the call signaling "1,680,110." Since the present embodiment identifies the identifier of the called and the called IMS-domain network according to the circuit domain network can not correspond, so at step 402, MGCF to the called identification circuit domain network of "1680110" for the index, to ENUM server queries its corresponding identification of the called IMS-domain network; after query, at step 403, ENU server returns a response message to the MGCF, the response message contains the query results "168 @ server.telecom.com", i.e. corresponding to the IMS domain of the network is called identity. Thereafter, at step 404, MGCF to query results "168@server.telecom.com" for the network connection as a call signaling in the IMS domain called identification, and, in the IMS-domain network call signaling is also provided with a circuit domain network call identification signaling the original called "1,680,110." Specifically, in this step, requestUri the "INVITE" message to fill in ENUM server returns the result of "168 @ server.telecom.com", and "P-Called-Party-ID" header field in the message fill in the circuit domain network identifier called "1,680,110." Thereafter, when processing the call signaling in the IMS domain network, the signaling may be incorporated in the identification of the called IMS domain call signaling "168 @ server.telecom.com", and "P-Called-Party-ID" header information domain "1680110" to determine the caller's first call object. In this case, since the original called party information is retained in the call signaling in the IMS domain of the network, so that the subsequent processing of the call determined first caller objects possible. It should be noted that the present embodiment and some "P-Called-Party-ID" header field to be stored in the circuit domain network when a call signaling session initiation protocol signaling, call signaling is by reusing Central where name identification, but the present invention is not limited thereto, in other embodiments, may also be called a call identification signaling any original "to" header field saved by reusing the circuit domain network is located. Those of ordinary skill in the art will appreciate that the so-called reuse, i.e. using cell signaling any original, unchanged on the semantic, or used in new areas in the scene. According to a third embodiment of the inter-network call connection method of the present invention is shown in Figure 5, the IMS-domain network and FIG circuit domain network as an example, illustrates a principle of the invention, when the call signaling in an integrated services digital network user part (ISDN user part, referred to as "ISUP"), the call signaling by reusing where any original "UUI" cell, a first program to save the called network identity. 5, first, in step 501, IMS domain network transmits call signaling to the MGCF, i.e. "INVITE" message, the cross-domain connection. Carrying circuit, a network identification field called "Myaddr@huawei.com" in the call signaling. Since the present embodiment identifies the called IMS-domain network of the called identifier and the circuit domain network can not correspond, so at step 502, MGCF of the IMS domain in order to identify the called network "Myaddr@huawei.com" as an index, to ENUM server query called identifier which respective circuit domain network; after query, at step 503, ENUM server returns a response message to the MGCF, the response message contains the query results "1681110", which is called to identify corresponding circuit domain network . Thereafter, at step 504, MGCF "1681110" as a circuit domain network connection for call signaling to the called identification query results, and the circuit domain network call signaling IMS-domain network is also provided for call signaling of the original called logo "Myaddr@huawei.com". Specifically, in this step, the ENUM server returns the results fill "1681110" in the Initial Address Message (IAM), a called identifier and fill "IMS network domain in Myaddr @" the UUI "information element of the message huawei.com ". Thereafter, when processing the call signaling in the circuit domain network, the signaling may be identified in conjunction with the called call signaling in circuit domain "1681110", and "the UUI" information element information "Myaddr@huawei.com", determining the calling user calls the original object. In this case, since the original called party information is retained in the call signaling in the circuit domain network, the subsequent processing is determined so that the caller calls the original object becomes possible. Described above is the circuit domain network call signaling processing, when processing the call signaling in a packet domain network, by reusing the same embodiment according to the present embodiment where any original call signaling "UUI" cell, to store the packet domain network called ID. It is noted that, according to the principles of the present invention, in addition to reuse any original host cell call signaling, call signaling and an increase in the cell, the network may reach the preservation of the original cell by extending the original call signaling identification of the called object. The present invention gateway call connection across the network call signaling device for splicing a first network to a second network, comprising:

A first network call signaling receiving means for receiving a call signaling from a first network, the first network call signaling contained in the original called party identifier;

The called party identification inquiry unit configured to query the called party in a second network identifier corresponding to the user identifier inquiring device according to the first control originally called network identifier;

The second network call signaling transmission unit, for transmitting a call signaling to a second network; the apparatus further comprising: a first network identifier of the called information setting unit, when the network is called a first identifier and a second network, call ID can not - when the corresponding setting information representing a first network identifier of the called call signaling sent to the second network.

Wherein, when the call signaling of the second network is an integrated services digital network user part of the signaling, the called party identifier in the first network information setting unit is provided in the "UUI" cell integrated services digital network user part of the signaling said information.

Wherein, when the call signaling when the second network is a Session Initiation Protocol signaling in the first network identification information setting unit called a Session Initiation Protocol signaling "To" header field or "P-Called-Party- ID "field of the header information provided. The connection device is a media gateway control function entity.

Although embodiments of the present invention by reference to certain preferred, the invention has been illustrated and described, those of ordinary skill in the art should be understood that various changes may be made thereto in form and detail without departing from the present the spirit and scope of the invention.

Claims

Rights request
An inter-network call connection method characterized by comprising: a gateway device when the call signaling across the network a first network to a second network connection is provided on behalf of the first call signaling sent to the second network information identifying the called network.
The inter-network call connection method according to claim 1, characterized in that, further comprising: determining whether the called identifier called a first network identifier and the second network may - correspond; if not, disposed at the second call signaling information representative of a first network identifier of the called network.
The inter-network call connection method according to claim 2, characterized in that, further comprising: when the second network call signaling processing, the signaling connection with the called party on behalf of the first network identifier and the called ID the information for determining the calling user calls the original object.
According to claim 1, said inter-network call connection method, wherein, on behalf of the new information element in the call signaling information is provided in a first network identifier of the called party.
According to claim 1, said inter-network call connection method, wherein said original information elements representative of the extended information is provided in a first network of the called party identified in the call signaling.
According to claim 1, said inter-network call connection method, wherein the representative information element in the original call signaling information is provided in a first reuse the called network identity.
The inter-network call connection method according to claim 6, wherein, when the call signaling is a session initiation protocol signaling when the cell is to be reused "To" header field or "P- Called-Party-ID "header field.
According to claim 6, said inter-network call connection method, wherein, when the call signaling is an integrated services digital network user part of the signaling, the cell is to be reused "UUI" cell.
9. It is only between the networks Gen 4 or 5, said call connection method of claim, wherein said Session Initiation Protocol call signaling or Integrated Services Digital Network User Part protocol.
10. A network according to claim 1 to 8 between any one of said call connection method, wherein said first network is a packet domain network, the second network is a circuit domain network; or the first a network is a circuit domain network, the second network is a packet domain network.
A call connection gateway device for connecting a first network call signaling across the network to a second network; characterized in that, comprising:
Called the first network identification information setting unit for setting information representing a first network identifier of the called call signaling sent to the second network.
12. The gateway as claimed in claim 11, wherein the call connection apparatus, wherein the first network identification information setting unit called the "UUI" cell integrated services digital network user part of the signaling information.
13. The gateway as claimed in claim 11, wherein the call connection apparatus, wherein the first network identification information setting unit called a Session Initiation Protocol signaling "To" header field or "P-Called-Party -ID "field provided the header information.
Inter-network according to claim any one of claims 11 to call connection equipment 13, characterized in that the connection device is a media gateway control function entity.
PCT/CN2006/001681 2005-09-01 2006-07-14 A method and device for continuing the call between the networks WO2007025435A1 (en)

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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

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