WO2012089047A1

WO2012089047A1 - Route query method, device and system in cs domain

Info

Publication number: WO2012089047A1
Application number: PCT/CN2011/084285
Authority: WO
Inventors: 李超
Original assignee: 华为技术有限公司
Priority date: 2010-12-31
Filing date: 2011-12-20
Publication date: 2012-07-05
Also published as: CN102036281A

Abstract

Disclosed are a route query method, device and system in CS domain, which relate to the communication field. In order to achieve centralized maintenance for the route data in the CS domain, the present invention provides the following technical solution: a mobile switching centre server receiving a call message; acquiring number information from the call message; sending to a phone number mapping server a route query message including the number information; receiving a route query result sent by the phone number mapping server; and sending the call message to the next node according to the route query result. The present invention is suitable for calls in the CS domain.

Description

CS domain route query method, device and system

This application claims priority to Chinese Patent Application No. 201010620160.8, entitled "CS Domain Routing Query Method, Apparatus and System", filed on December 31, 2010, the entire contents of which are incorporated herein by reference. In the application. Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a method, device, and system for querying a CS domain route. BACKGROUND OF THE INVENTION Currently, a CS (Circuit Switching) domain refers to all network element entities in a core network that provide circuit switched type connections for user services, and all network element entities that support related signaling. Circuit-switched connections allocate dedicated network resources when a connection is established, freeing up dedicated resources when the connection is released. The network element entity includes an MSC Server/GMSC Server (Mobile Switching Center Server/Gateway Mobile Switching Center Server) and a gateway MGW (Media Gateway) controlled by the network.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: Currently, in the CS domain of the mobile network and the NGN network, the switch and the MSC Server each undertake the work of number analysis and routing data acquisition, and therefore, Routing data needs to be configured on each switch and MSC Server in the network, which is not conducive to centralized maintenance of the network and reduces network operation and maintenance efficiency. Summary of the invention

The embodiment of the present invention provides a CS domain route query method, device, and system for solving the problem of centralized maintenance of routing data of a CS domain network.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

A CS domain routing query method includes:

The mobile switching center server receives the call message; Obtaining number information from the call message;

Sending a route query message to the phone number mapping server, where the route query message includes the number information;

Receiving a route query result sent by the phone number mapping server;

Sending the call message to a next node according to the routing query result.

A mobile switching center server, comprising:

a call receiving unit, configured to receive a call message;

a number obtaining unit, configured to obtain the number information from the call message received by the call receiving unit;

a query sending unit, configured to send a route query message to the phone number mapping server, where the route query message includes number information acquired by the number obtaining unit;

a result receiving unit, configured to receive a route query result sent by the phone number mapping server;

And a call sending unit, configured to send the call message to the next node according to the route query result received by the result receiving unit.

A C S domain routing query system, comprising:

a mobile switching center server, configured to receive a call message; obtain number information from the call message; send a route query message to the phone number mapping server, where the route query message includes the number information; and receive the phone number mapping server The route query result sent; sending the call message to the next node according to the route query result;

The phone number mapping server is configured to receive a route query message sent by the mobile switching center server, obtain a route query result according to the number information in the route query message, and send a route query result to the mobile switching center server.

The method, device and system for querying the CS domain route provided by the embodiment of the present invention, when receiving a call message, the mobile switching center server obtains number information from the call message, and obtains a route query from the phone number mapping server according to the number information. As a result, the call message is sent to the next node according to the route query result. Therefore, the routing data of the CS domain is not configured on every switch and MSC on the network, but is deployed, managed, and maintained on the ENUM Server to improve the operation and maintenance efficiency of the network. DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor. 1 is a schematic flowchart of a method for querying a CS domain route according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of another method for querying a CS domain route according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another CS domain route query method according to an embodiment of the present disclosure;

4 is a schematic flow chart of another CS domain route query method according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of another CS domain route query method according to an embodiment of the present invention;

6 is a schematic structural diagram of a mobile switching center server according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a CS domain route query system according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to enable the centralized maintenance of the routing data of the CS domain network, the embodiment of the present invention provides a CS domain routing query method, as shown in FIG. 1 , including:

101. The mobile switching center server receives the call message.

For example, when a PSTN (Public Switched Telephone Network) user calls a mobile phone user, the MSC Server can receive a call message sent by a PSTN device or a GMSC (Gateway Mobile Switching Center). When the mobile phone user calls the mobile phone user, the MSC Server can receive The call message sent by the GMSC. When the mobile phone user calls the PSTN user, the MSC Server can receive the call message sent by the Visited Mobile-services Switching Centre (VMSC). When an inter-office handover occurs during a call, the MSC Server can receive a call message sent by the VMSC.

102. The mobile switching center server obtains the number information from the call message, where the number information includes an MSISDN (Mobile Subscriber International Integrated Service Digital Network number) of the called user, and is called User's MRSN (Mobile Station Roaming Number), HON (Handover Number) or the PSTN number of the called user.

For example, when a PSTN user calls a mobile phone user, the MSC Server can obtain the MSISDN or MRSN of the called user from the received call message. When the mobile phone user calls the mobile phone user, the MSC Server can obtain the MRSN of the called user from the received call message. When the mobile phone user calls the PSTN user, the MSC Server can obtain the PSTN number of the called user from the received call message. When an inter-office handover occurs during a call, the MSC Server can obtain a HON from the received call message.

103. The mobile switching center server sends a routing query message to the phone number mapping server, where the routing query message includes the number information.

For example, between the MSC Server and the ENUM (Telephone Number Mapping) server, the E-mail/DNS (Domain Name System) interface, when the MSC Server receives the call message, will be in the call message. The obtained MSISDN or MSRN or PSTN number of the called user, or HON is added in the routing query message, and the routing query message is sent to the ENUM Server through the interface.

104. The mobile switching center server receives a route query result sent by the phone number mapping server.

The routing query result includes at least one of a routing number of the called user, an address of the destination network, and an address of the next node. The address of the destination network is the domain name of the destination network or the IP (Internet Protocol) protocol, and the address of the next node is the SIP (Session Initiation Protocol) of the next node. Routing header field, domain name or IP address.

For example, after receiving the route query message sent by the MSC Server, the ENUM Server queries the MSISDN or MSRN or PSTN number of the called user according to the route query message, or HON queries the route and gets the route query result. And sending the route query result to the MSC Server.

105. The mobile switching center server sends the call message to a next node according to the routing query result.

For example, after receiving the routing query result sent by the ENUM Server, the MSC Server sends the call to the next node according to the routing number of the called user or the address of the destination network or the address of the next node in the routing query result. Message. The routing number carries the address information of the next node, and the MSC Server can directly determine the next node according to the routing number.

The CS domain route query method provided by the embodiment obtains the number information from the call message when receiving the call message, obtains the route query result from the phone number mapping server according to the number information, and performs the query result according to the route. The call message is sent to the next node. Therefore, the routing data of the CS domain is not configured on each switch and MSC Server in the network, but is deployed, managed, and maintained on the ENUM Server to improve network operation and maintenance efficiency.

In the previous embodiment, when the PSTN user calls the mobile phone user, or when the mobile phone user calls the mobile phone user, or when the mobile phone user calls the PSTN user, or when the inter-office handover occurs during the call, Routing query. Hereinafter, the previous embodiment will be further described in detail in combination with the above various situations.

As shown in FIG. 2, the CS domain route query method in the embodiment of the present invention includes:

201. When the PSTN user calls the mobile phone user, the PSTN device sends a call message to the MSC Server.

After receiving the call message, the MSC Server obtains the MSISDN of the called user from the call message.

203. The MSC Server sends a route query message to the ENUM Server, where the route query message includes the MSISDN of the called user.

For example, the MSC Server may add the MSISDN of the called user to the routing query message sent to the ENUM Server, and then send the routing query message to the ENUM Server through the interface between the MSC Server and the ENUM Server.

204. After receiving the route query message, the ENUM Server obtains a route query result according to the MSISDN of the called user in the route query message.

For example, after receiving the route query message, the ENUM Server obtains the route check. The MSISDN of the called user in the message. At this time, the ENUM Server can query the routing database according to the MSISDN of the called user, and obtain the routing number corresponding to the MSISDN, and the routing number is a number in the E.164 format. Alternatively, the ENUM Server can query the routing database according to the MSISDN of the called user to obtain the address of the corresponding destination network, such as the domain name or IP address of the destination network. Alternatively, the ENUM Server can query the routing database according to the MSISDN of the called user, and obtain the address of the corresponding next node, for example, the Route header field, domain name or IP address of the SIP of the next node. In addition, ENUM can also obtain the routing number of the called user, the address of the destination network, and the address of the next node.

205. The ENUM Server sends the route query result to the MSC Server.

The route query result returned by the ENUM Server to the MSC Server can take the following form: sip:<tel>@<destination>;user=phone?route=<next-hop>

Where "tel," is the routing number of the called user, the "destination" part is the address of the destination network, such as the domain name or IP address of the destination network, and the "next-hop" part is the address of the next node. The address of the next node is the R 0 ute header field, domain name or IP address of the SIP of the next node.

206. After receiving the routing query result, the MSC Server sends a call message to the VMSC that is the next node according to the routing query result.

For example, after receiving the route query result sent by the ENUM server, the MSC Server carries valid data in the "tel" part of the route query result, that is, when the route query result includes the routing number of the called user, the MSC Server can The routing number of the called user directly determines the VMSC as the next node, and sends a call message to the VMSC. Alternatively, when the "destination" part of the route query result carries valid data, that is, when the route query result includes the address of the destination network, the MSC Server may determine the VMSC as the next node according to the address of the destination network, The VMSC sends a call message. Alternatively, when the "next-hop" part of the route query result carries valid data, that is, when the route query result includes the address of the next node, the MSC Server may determine the VMSC as the next node at the address of the next node. Send a call message to the VMSC.

As shown in FIG. 3, the method for querying a CS domain route in the embodiment of the present invention includes:

301. When the PSTN user calls the mobile phone user or the mobile phone user calls the mobile phone user, the GMSC sends a call message to the MSC Server;

302. After receiving the call message, the MSC Server obtains an MSRN of the called user from the call message. 303. The MSC Server sends a route query message to the ENUM server, where the route query message includes the MSRN of the called user.

For example, the MSC Server may add the MSRN of the called user to the routing query message sent to the ENUM Server, and then send the routing query message to the ENUM Server through the interface between the MSC Server and the ENUM Server.

After receiving the route query message, the ENUM Server obtains the route query result according to the MSRN of the called user in the route query message.

For example, after receiving the route query message, the ENUM Server obtains the MSRN of the called user in the route query message. At this time, the ENUM Server can query the routing database according to the MSRN of the called user, and obtain the routing number corresponding to the MSRN, and the routing number is a number in the E.164 format. Alternatively, the ENUM Server can query the routing database according to the MSRN of the called user to obtain the address of the corresponding destination network, such as the domain name or IP address of the destination network. Alternatively, the ENUM Server can query the routing database according to the MSRN of the called user to obtain the address of the corresponding next node, for example, the SIP header field, domain name or IP address of the next node. In addition, ENUM can also obtain the routing number of the called user, the address of the destination network, and the address of the next node.

305. The ENUM Server sends the route query result to the MSC Server.

306. After receiving the routing query result, the MSC Server sends a call message to the VMSC that is the next node according to the routing query result.

For example, after receiving the route query result sent by the ENUM server, the MSC Server carries valid data in the "tel" part of the route query result, that is, when the route query result includes the routing number of the called user, the MSC Server can The routing number of the called user directly determines the VMSC as the next node, and sends a call message to the VMSC. Alternatively, when the "destination" part of the route query result carries valid data, that is, when the route query result includes the address of the destination network, the MSC Server may determine the VMSC as the next node according to the address of the destination network, The VMSC sends a call message. Or, on the road The valid data is carried by the "nex t-hop" part of the query result, that is, when the route query result includes the address of the next node, the MSC Server can determine the VMSC as the next node at the address of the next node, to the The VMSC sends a call message.

As shown in FIG. 4, the CS domain route query method in the embodiment of the present invention includes:

401. When the mobile phone user calls the PSTN user, the VMSC sends a call message to the MSC Server.

402. After receiving the call message, the MSC Server obtains a PSTN number of the called user from the call message.

403. The MSC Server sends a route query message to the ENUM Server, where the route query message includes a PSTN number of the called user.

For example, the MSC Server may add the PSTN number of the called user to the routing query message sent to the ENUM Server, and then send the routing query message to the ENUM Server through the interface between the MSC Server and the ENUM Server.

404. After receiving the route query message, the ENUM Server obtains a route query result according to the PSTN number of the called user in the route query message.

For example, after receiving the route query message, the ENUM Server obtains the PSTN number of the called user in the route query message. At this point, the ENUM Server can process the called subscriber's PSTN number into a standard E.164 format number. The ENUM Server can query the routing database according to the number in the E.164 format to obtain the routing number corresponding to the number in the E.164 format, and the routing number is also the number in the E.164 format. Alternatively, the ENUM Server can query the routing database according to the number in the E.164 format to obtain the address of the corresponding destination network, such as the domain name or IP address of the destination network. Alternatively, the ENUM Server can query the routing database according to the number of the E.164 format to obtain the address of the corresponding next node, for example, the Rou te header field, domain name or IP address of the S IP of the next node. In addition, ENUM can also obtain the routing number of the called user, the address of the destination network, and the address of the next node.

405. The ENUM Server sends the route query result to the MSC Server.

Where "te l," is the routing number of the called user, and the "des t ina t ion" part is the address of the destination network, such as the domain name or IP address of the destination network, and the "nex t-hop" part is the next The address of the node. The address of the next node is the R 0 ute header field, domain name or IP address of the SIP of the next node. 406. After receiving the route query result, the MSC Server sends a call message to the GMSC that is the next node according to the route query result.

For example, after receiving the route query result sent by the ENUM server, the MSC Server carries valid data in the "tel" part of the route query result, that is, when the route query result includes the routing number of the called user, the MSC Server can The routing number of the called user directly determines the GMSC as the next node, and sends a call message to the GMSC. Alternatively, when the "destination" part of the route query result carries valid data, that is, when the route query result includes the address of the destination network, the MSC Server may determine the GMSC as the next node according to the address of the destination network, The GMSC sends a call message. Alternatively, when the "next-hop" part of the route query result carries valid data, that is, when the route query result includes the address of the next node, the MSC Server may determine the GMSC as the next node at the address of the next node. Send a call message to the GMSC.

As shown in FIG. 5, the CS domain route query method in the embodiment of the present invention includes:

501: When an inter-office handover occurs during a call, the VMSC 1 serving as the cut-out office sends a call message to the MSC Server;

In this embodiment, the interoffice handover may be an interoffice handover that occurs as a calling mobile phone user during a call, or may be an interoffice handover that occurs as a called mobile phone user during a call.

502. After receiving the call message, the MSC Server obtains HON from the call message, where HON is used to establish handover between two mobile switching areas (MSC areas).

The number temporarily used between the MSCs for the call link.

503. The MSC Server sends a route query message to the ENUM Server, where the route query message includes a HON;

For example, the MSC Server may add a HON to the routing query message sent to the ENUM Server, and then send the routing query message to the ENUM Server through the interface between the MSC Server and the ENUM Server.

504. After receiving the route query message, the ENUM Server obtains a route query result according to the HON in the route query message.

For example, after receiving the route query message, the ENUM Server obtains the HON in the route query message. At this time, the ENUM Server can query the routing database according to the HON to obtain the routing number corresponding to the HON, and the routing number is a number in the format of E.164. Alternatively, ENUM Server can query the routing database according to the HON to obtain the corresponding destination network. Address, such as the domain name or IP address of the destination network. Alternatively, the ENUM Server can query the routing database according to the HON to obtain the address of the corresponding next node, such as the Rou te header field, domain name or IP address of the SIP of the next node. In addition, ENUM can also obtain the routing number corresponding to the HON, the address of the destination network, and the address of the next node.

505. The ENUM Server sends the route query result to the MSC Server.

The "te l " part is the routing number corresponding to the HON, the " des t ina t ion" part is the address of the destination network, such as the domain name or IP address of the destination network, and the "nex t-hop" part is the next node. address. The address of the next node is the Rou te header field, domain name or IP address of the S IP of the next node.

506. After receiving the routing query result, the MSC Server sends a call message to the VMSC 2 as the next node according to the routing query result.

For example, after receiving the route query result sent by the ENUM Server, the MSC Server carries valid data in the "tel" part of the route query result, that is, when the route query result includes the routing number corresponding to the HON, the MSC Server can The routing number directly determines the VMSC 2 as the next node, and is also the VMSC 2 that cuts in the incoming message, and sends a call message to the VMSC 2. Alternatively, when the "destination" part of the route query result carries valid data, that is, when the route query result includes the address of the destination network, the MSC Server may determine the VMSC 2 as the next node according to the address of the destination network. The VMSC 2, which is also cut into the office, sends a call message to the VMSC 2. Alternatively, when the "nex t-hop" part of the route query result carries valid data, that is, when the route query result includes the address of the next node, the MSC Server may determine the address of the next node as the next node. The VMSC 2, which is also the cut-in VMSC 2, sends a call message to the VMSC 2.

The CS domain route query method provided by the foregoing embodiment obtains the number information from the call message when the MSC Server receives the call message, obtains the route query result from the ENUM server according to the number information, and performs the query result according to the route. The call message is sent to the next node. Therefore, the routing data of the CS domain is not configured on every switch and MSC Server in the network, but is deployed, managed, and maintained on the ENUM server to improve the operation and maintenance efficiency of the network.

Corresponding to the foregoing method, the embodiment of the present invention further provides a mobile switching center server, as shown in FIG. 6, including: a call receiving unit 601, configured to receive a call message;

The number obtaining unit 602 is configured to obtain number information from a call message received by the call receiving unit 601.

The query sending unit 603 is configured to send a route query message to the phone number mapping server, where the route query message includes the number information acquired by the number obtaining unit 602;

a result receiving unit 604, configured to receive a route query result sent by the phone number mapping server;

The call sending unit 605 is configured to send the call message to the next node according to the route query result received by the result receiving unit 604.

Further, the number information includes a mobile station international integrated service digital network number of the called user, a mobile station roaming number of the called user, a handover number or a public switched telephone network number of the called user.

Further, the route query result includes at least one of a routing number of the called user, an address of the destination network, and an address of the next node. Further, the address of the destination network is a domain name or an IP address of the destination network, and the address of the next node is a routing header field, a domain name or an IP address of a session initiation protocol of the next node.

Further, the call sending unit 605 is specifically configured to send the call message to the next node according to the routing number of the called user or the address of the destination network or the address of the next node in the routing query result.

For the specific working method of the mobile switching center server in this embodiment, reference may be made to the method described in FIG. 1-5, and details are not described herein again.

The mobile switching center server provided by the embodiment obtains the number information from the call message when receiving the call message, obtains a route query result from the phone number mapping server according to the number information, and obtains a route query result according to the route query result. The next node sends the call message. Therefore, the routing data of the CS domain is not configured on each switch and MSC Server in the network, but is deployed, managed, and maintained on the ENUM Ser ver to improve network operation and maintenance efficiency.

Corresponding to the foregoing method and apparatus, the embodiment of the present invention further provides a CS domain routing query system, as shown in FIG. 7, including:

a mobile switching center server 701, configured to receive a call message; obtain number information from the call message; send a route query message to the phone number mapping server 702, where the route query message includes the number information; receive the phone number Mapping server 702 The route query result sent; sending the call cancellation to the next node according to the route query result

The phone number mapping server 702 is configured to receive a route query message sent by the mobile switching center server 701, obtain a route query result according to the number information in the route query message, and send a route query result to the mobile switching center server 701. .

For the specific working method of the mobile switching center server and the telephone number mapping server in this embodiment, refer to the method described in FIG. 1-5, and details are not described herein again.

The route query system provided by the embodiment obtains the number information from the call message when receiving the call message, obtains the route query result from the phone number mapping server according to the number information, and returns the result according to the route query result. A node sends the call message. Therefore, the routing data of the CS domain is not configured on every switch and MSC Server in the network, but is deployed, managed, and maintained on the ENUM server to improve the operation and maintenance efficiency of the network.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random accum ss Memory (RAM). ) Wait.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

A circuit-switched CS domain route query method, comprising: a mobile switching center server receiving a call message;

Obtaining number information from the call message;

Receiving a route query result sent by the phone number mapping server;

Sending the call message to a next node according to the routing query result.

2. The method according to claim 1, wherein the number information comprises a mobile station international integrated service digital network number of the called user, a mobile station roaming number of the called user, a switching number or a public of the called user. Exchange telephone network numbers.

The method according to claim 1 or 2, wherein the route query result comprises at least one of a routing number of the called user, an address of the destination network, and an address of the next node.

The method according to claim 3, wherein the address of the destination network is a domain name or an IP address of the destination network, and the address of the next node is a routing header field of a session initiation protocol of the next node, Domain name or IP address.

5. A mobile switching center server, comprising:

a call receiving unit, configured to receive a call message;

6. The mobile switching center server according to claim 5, wherein the number information comprises a mobile station international integrated service digital network number of the called user, a mobile station roaming number of the called user, a switching number or a called party. The public switched telephone network number of the user.

7. The mobile switching center server according to claim 5 or 6, wherein The route query result includes at least one of a routing number of the called user, an address of the destination network, and an address of the next node.

The mobile switching center server according to claim 7, wherein the address of the destination network is a domain name or an IP address of the destination network, and the address of the next node is a route of a session initiation protocol of the next node. Header domain, domain name or IP address.

9. A CS domain routing query system, comprising: