CN111200809B - Method, gateway and system for realizing VOLTE terminal international roaming service - Google Patents
Method, gateway and system for realizing VOLTE terminal international roaming service Download PDFInfo
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- CN111200809B CN111200809B CN201811379542.9A CN201811379542A CN111200809B CN 111200809 B CN111200809 B CN 111200809B CN 201811379542 A CN201811379542 A CN 201811379542A CN 111200809 B CN111200809 B CN 111200809B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
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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
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W12/06—Authentication
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- H—ELECTRICITY
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Abstract
The present disclosure provides a method, a dual-mode gateway, a communication system and a storage medium for realizing an international roaming service of a VOLTE terminal, which relate to the technical field of communication, wherein the method comprises the following steps: setting an HLR module and an S-CSCF module of the dual-mode gateway; the HIR module executes an HLR function of a GSM network, and the S-CSCF module executes an S-CSCF function of an IMS network; and the HIR module and the S-CSCF module are used for carrying out data interaction so as to complete international roaming registration for the overseas VOLTE terminal and carry out routing processing on the call taking the VOLTE terminal as a called party. The method, the dual-mode gateway, the communication system and the storage medium can reduce the hardware cost and simultaneously ensure that the message path for realizing international roaming is shorter, safer and more stable; even if CDMA quits network, the international roaming of VoLTE and GSM dual-mode users can be realized, and the requirement of international operation is met.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, a dual-mode gateway, a communication system, and a storage medium for implementing an international roaming service of a VOLTE terminal.
Background
At present, a CDMA (Code Division Multiple Access) network and a number seven signaling network in China are going to quit, and a Voice over Long-Term Evolution (lte) terminal without a C-mode is pushed by a chinese telecom owner, and considering the problem of international roaming from the VOLTE terminal to a VOLTE network-free area, a VOLTE terminal with a GSM (Global system for Mobile Communication) mode needs to be adopted, so that international roaming is realized through the GSM network.
However, when the VOLTE terminal adopts GSM network international roaming, CDMA HLR number assignment is required, a voice call requires GMSC routing, a short message service must pass through a CDMA signaling network, and long-term existence of C2G international roaming may cause dependence on CDMA network equipment, and thus, CDMA network logout may not be realized, and subsequent development of the network is also not facilitated. Therefore, a technical solution is needed to realize the international roaming of the dual-mode user of VoLTE and GSM even if CDMA exits the network.
Disclosure of Invention
In view of the above, an object of the present disclosure is to provide a method, a dual mode gateway, a communication system, and a storage medium for implementing an international roaming service of a VOLTE terminal.
According to an aspect of the present disclosure, a method for implementing an international roaming service of a VOLTE terminal is provided, which includes: setting an HLR module and an S-CSCF module of the dual-mode gateway; the HLR module executes an HLR function of a GSM network, and the S-CSCF module executes an S-CSCF function of an IMS network; and performing data interaction with the S-CSCF module through the HLR module so as to complete international roaming registration for the overseas VOLTE terminal and perform routing processing on the call taking the VOLTE terminal as a called party.
Optionally, the performing, by the HLR module, data interaction with the S-CSCF module includes: the HLR module receives a registration and authentication request sent by the VOLTE terminal through an overseas GSM network or WCDMA network; after the HLR module finishes registration and authentication, a registration request message is sent to the S-CSCF module; wherein, the message carried in the registration request message includes: IMPI information; and the S-CSCF module completes IMS domain registration for the VOLTE terminal in an IMS network in the home according to the registration request message, and downloads user Profile data from the HSS.
Optionally, after the IMS domain registration is completed for the VOLTE terminal, the S-CSCF module sends a registration response message to the HLR module.
Optionally, the performing, by the HLR module, data interaction with the S-CSCF module includes: the S-CSCF module receives a call to the VOLTE terminal sent by an I-CSCF in an IMS network in the home, sequentially triggers all AS according to the sequence of IFC, and sends a roaming number request message to the HLR module; the HLR module returns a roaming number response message to the S-CSCF module; wherein, the message carried in the roaming number response message includes: the roaming number of the VOLTE terminal.
Optionally, the HLR module requests the roaming number from a VLR in an overseas GSM network or WCDMA network.
Optionally, the S-CSCF module routes a call called as the roaming number of the VOLTE terminal, which is sent by the I-CSCF, to a media gateway control function, so that the media gateway control function sends the route to a VLR in an overseas GSM network or WCDMA network.
Optionally, the data stored by the HLR module includes: IMSI, MSISDN, authentication information, service authority, roaming authority of GSM network, IMPI and IMPU of VoLTE terminal.
According to another aspect of the present invention, there is provided a dual-mode gateway for implementing an international roaming service of a VOLTE terminal, including: an HLR module and an S-CSCF module; the HLR module executes an HLR function of a GSM network, and the S-CSCF module executes an S-CSCF function of an IMS network; and the HLR module performs data interaction with the S-CSCF module, and is used for completing international roaming registration for the overseas VOLTE terminal and routing the call taking the VOLTE terminal as a called party.
Optionally, the HLR module is configured to receive a registration and authentication request sent by the VOLTE terminal through an overseas GSM network or a WCDMA network; after finishing the registration and authentication, sending a registration request message to the S-CSCF module; wherein, the message carried in the registration request message includes: IMPI information; and the S-CSCF module is used for completing IMS domain registration for the VOLTE terminal in an IMS network in the home according to the registration request message and downloading user Profile data from the HSS.
Optionally, the S-CSCF module is configured to send a registration response message to the HLR module after the IMS domain registration is completed for the VOLTE terminal.
Optionally, the S-CSCF module is configured to receive a call to the VOLTE terminal sent by an I-CSCF in an IMS network within an environment, sequentially trigger each AS according to an IFC order, and send a roaming number request message to the HLR module; the HLR module is used for returning a roaming number response message to the S-CSCF module; wherein, the message carried in the roaming number response message includes: the roaming number of the VOLTE terminal.
Optionally, the HLR module is configured to request the roaming number from a VLR in an outbound GSM network or a WCDMA network.
Optionally, the S-CSCF module is configured to route, to a media gateway control function, a call called as a roaming number of the VOLTE terminal, which is sent by the I-CSCF, so that the media gateway control function sends the route to a VLR in an overseas GSM network or a WCDMA network.
Optionally, the data stored by the HLR module includes: IMSI, MSISDN, authentication information, service authority, roaming authority of GSM network, IMPI and IMPU of VoLTE terminal.
According to another aspect of the present invention, there is provided a dual-mode gateway for implementing an international roaming service of a VOLTE terminal, including: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to yet another aspect of the present invention, there is provided a communication network comprising: the dual-mode gateway for realizing the international roaming service of the VOLTE terminal is disclosed.
According to yet another aspect of the present disclosure, a computer-readable storage medium is provided, which stores computer instructions for execution by a processor to perform the method as described above.
According to the method for realizing the VOLTE terminal international roaming service, the dual-mode gateway, the communication system and the storage medium, the dual-mode gateway executes the HLR function and the S-CSCF function, so that international roaming registration is completed for the VOLTE terminal, routing processing is performed on a called call, and the like; the interworking between the VOLTE and the GSM network is realized, the hardware cost can be reduced, and meanwhile, the message path for realizing international roaming is shorter, safer and more stable; when the VOLTE terminal adopts GSM network international roaming, even if CDMA network quits, the VOLTE and GSM dual-mode user international roaming can be realized, and the requirement of international operation is met.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a flowchart illustrating an embodiment of a method for implementing an international roaming service of a VOLTE terminal according to the present disclosure;
fig. 2 is a flowchart illustrating international roaming registration according to an embodiment of the disclosed method for implementing an international roaming service of a VOLTE terminal;
fig. 3 is a signaling flow diagram of international roaming registration according to an embodiment of the method for implementing an international roaming service of a VOLTE terminal according to the present disclosure;
fig. 4 is a schematic flowchart illustrating a process of routing a called call according to an embodiment of the method for implementing an international roaming service of a VOLTE terminal according to the present disclosure;
fig. 5 is a signaling flow diagram illustrating a routing process for a called call according to an embodiment of the method for implementing an international roaming service of a VOLTE terminal according to the present disclosure;
fig. 6 is a schematic block diagram of an embodiment of a dual-mode gateway for implementing an international roaming service of a VOLTE terminal according to the present disclosure;
fig. 7 is a module diagram of another embodiment of a dual-mode gateway for implementing an international roaming service of a VOLTE terminal according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure. The technical solution of the present disclosure is described in various aspects below with reference to various figures and embodiments.
Fig. 1 is a flowchart illustrating an embodiment of a method for implementing an international roaming service of a VOLTE terminal according to the present disclosure, as shown in fig. 1:
And step 102, performing data interaction with the S-CSCF module through the HLR module to complete international roaming registration for the overseas VOLTE terminal and perform routing processing on a call taking the VOLTE terminal as a called party.
In the prior art, the international roaming gateway integrates part of functions of an access side network element P-CSCF (Proxy Call Session Control Function, Proxy CSCF), requires a Proxy to complete IMS domain AKA (key agreement protocol) authentication and 4G AKA bidirectional authentication, and is very complex.
The dual-mode gateway in the invention is a VOLTE TO GSM dual-mode gateway, realizes the roaming registration and called of the VoLTE user in the overseas GSM/WCDMA network, and realizes the international roaming of the VoLTE and GSM dual-mode user.
The HLR module and the S-CSCF module perform data interaction through internal information, static user data are stored in the HLR module, and authentication is completely realized by a CS domain. The HLR module and the S-CSCF module can realize the procedures of registration/logout, called calling and the like only through internal information. Compared with the prior art, the invention has the advantages of ingenious design, simplicity and easy implementation, at least two network elements are omitted in the network roaming registration and called process, and if DNS query is considered, the message path is omitted by at least eight hops.
The HLR module performs HLR functions and responsibilities in the role of HLR for an overseas GSM/WCDMA (Wideband Code Division Multiple Access) network and for an overseas GSM/WCDMA network. The S-CSCF module is in an S-CSCF role for the indoor VoLTE IMS network and for the indoor VoLTE IMS network, and executes the S-CSCF function and responsibility. The HLR module and the S-CSCF module exchange messages through an internal interface to complete a message flow and realize communication.
Fig. 2 is a schematic flowchart of international roaming registration according to an embodiment of the method for implementing an international roaming service of a VOLTE terminal according to the present disclosure, as shown in fig. 2:
In step 203, the S-CSCF module completes IMS domain registration for the VOLTE terminal in the IMS network according to the registration request message, and downloads the user Profile data from the HSS (Home subscriber server).
And step 204, after the IMS domain registration is completed for the VOLTE terminal, the S-CSCF module sends a registration response message to the HLR module.
The data stored by the HLR module includes: an IMSI (International Mobile Subscriber Identity) of the GSM network, an MSISDN (Mobile Subscriber International ISDN/PSTN Number), authentication information, service rights, roaming rights, an IMPI (IP Multimedia private Identity) and an IMPU (IP Multimedia Public Identity) of the VoLTE terminal, and the like.
As shown in the signaling flow diagram of fig. 3, after the HLR (module) completes the registration and authentication process in the GSM/WCDMA network, it sends a "registration request" message to the S-CSCF (module), which carries the IMPI information of the user. The S-CSCF (module) completes the registration of the IMS domain and downloads the user Profile data from the HSS.
Fig. 4 is a schematic flowchart of a process of routing a called call according to an embodiment of the method for implementing an international roaming service of a VOLTE terminal according to the present disclosure, as shown in fig. 4:
The HLR module requests a roaming number from the VLR in the overseas GSM network or WCDMA network. The S-CSCF module routes a call called a roaming number of the VOLTE terminal, which is sent by the I-CSCF, to the media gateway control function, so that the media gateway control function sends the route to a VLR (Visitor Location Register) in an overseas GSM network or WCDMA network.
AS shown in the signaling flow diagram of fig. 5, after receiving an MT (mobile terminating) call of a user, the S-CSCF sequentially triggers each AS according to the IFC, and then sends a "roaming number request" message to the HLR; HLR returns MSRN through 'roaming number response' message after obtaining MSRN from VLR
(Mobile Station Roaming Number). The S-CSCF routes the call called MSRN to MGCF (Media Gateway Control Function). The VOLTE _ TO _ GSM dual-mode gateway is an organic combination of an HLR and an S-CSCF through internal information, the HLR stores user data such as IMSI, MSISDN, authentication information, service authority, roaming authority and the like in a GSM network, and IMPI, IMPU and the like of VoLTE are deduced from the IMSI and the MSISDN.
In one embodiment, as shown in fig. 6, the present invention provides a dual-mode gateway 60 for implementing an international roaming service of a VOLTE terminal, including: an HLR module 61 and an S-CSCF module 62. The HLR module 61 performs HLR functions for a GSM network and the S-CSCF module 62 performs S-CSCF functions for an IMS network. The HLR module 61 performs data interaction with the S-CSCF module 62 to complete international roaming registration for the overseas VOLTE terminal and perform routing processing for the call using the VOLTE terminal as the called party.
The HLR module 61 receives a registration and authentication request transmitted by the VOLTE terminal through the overseas GSM network or WCDMA network. After completing registration and authentication, the HLR module 61 sends a registration request message to the S-CSCF module 62; wherein, the message carried in the registration request message includes: IMPI information, etc. The S-CSCF module 62 completes IMS domain registration for the VOLTE terminal in the IMS network in the home according to the registration request message, and downloads the user Profile data from the HSS. The S-CSCF module 62 sends a registration response message to the HLR module after completing IMS domain registration for the VOLTE terminal.
In one embodiment, the S-CSCF module 62 receives a call for the VOLTE terminal sent by an I-CSCF in the IMS network within the home, sequentially triggers each AS according to the sequence of IFCs, and sends a roaming number request message to the HLR module. The HLR module 61 returns a roaming number response message to the S-CSCF module; wherein, the message carried in the roaming number response message includes: roaming number of VOLTE terminal, etc.
The HLR module 61 requests a roaming number from a VLR in an overseas GSM network or WCDMA network. The S-CSCF module 62 routes a call called the roaming number of the VOLTE terminal, sent by the I-CSCF, to the media gateway control function, so that the media gateway control function sends the route to the VLR in the overseas GSM network or WCDMA network.
Fig. 7 is a module diagram of another embodiment of a dual-mode gateway for implementing an international roaming service of a VOLTE terminal according to the present disclosure. As shown in fig. 7, the apparatus may include a memory 71, a processor 72, a communication interface 73, and a bus 74. The memory 71 is used for storing instructions, the processor 72 is coupled to the memory 71, and the processor 72 is configured to execute the method for implementing the international roaming service of the VOLTE terminal based on the instructions stored in the memory 71.
The memory 71 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), or the like, and the memory 71 may be a memory array. The storage 71 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 72 may be a central processing unit CPU, or an application Specific Integrated circuit asic (application Specific Integrated circuit), or one or more Integrated circuits configured to implement the method of implementing the international roaming service for VOLTE terminals of the present disclosure.
In one embodiment, the present invention provides a communication network including the dual-mode gateway for implementing the international roaming service of the VOLTE terminal as described in any of the above embodiments.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions which, when executed by a processor, implement a method for implementing an international roaming service for a VOLTE terminal as in any one of the above embodiments.
In the method for implementing the international roaming service of the VOLTE terminal, the dual-mode gateway, the communication system and the storage medium in the embodiment, the dual-mode gateway executes the HLR function and the S-CSCF function to complete international roaming registration for the VOLTE terminal, route processing for a called call, and the like; the interworking between the VOLTE and the GSM network is realized, the hardware cost can be reduced, and the interworking is safer and more stable; when the VOLTE terminal adopts GSM network international roaming, even if CDMA network quits, the VOLTE and GSM dual-mode user international roaming can be realized, and the requirement of international operation is met.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (17)
1. A method for realizing VOLTE terminal international roaming service includes:
setting an HLR module and an S-CSCF module of the dual-mode gateway; the HLR module executes an HLR function of a GSM network, and the S-CSCF module executes an S-CSCF function of an IMS network;
and performing data interaction with the S-CSCF module through the HLR module so as to complete international roaming registration for the overseas VOLTE terminal and perform routing processing on the call taking the VOLTE terminal as a called party.
2. The method of claim 1, the interacting data with the S-CSCF module via the HLR module comprising:
the HLR module receives a registration and authentication request sent by the VOLTE terminal through an overseas GSM network or WCDMA network;
after the HLR module finishes registration and authentication, a registration request message is sent to the S-CSCF module; wherein, the message carried in the registration request message includes: IMPI information;
and the S-CSCF module completes IMS domain registration for the VOLTE terminal in an IMS network in the home according to the registration request message, and downloads user Profile data from the HSS.
3. The method of claim 2, further comprising:
and after the VOLTE terminal completes IMS domain registration, the S-CSCF module sends a registration response message to the HLR module.
4. The method of claim 1, the interacting data with the S-CSCF module via the HLR module comprising:
the S-CSCF module receives a call to the VOLTE terminal sent by an I-CSCF in an IMS network in the home, sequentially triggers all AS according to the sequence of IFC, and sends a roaming number request message to the HLR module;
the HLR module returns a roaming number response message to the S-CSCF module; wherein, the message carried in the roaming number response message includes: the roaming number of the VOLTE terminal.
5. The method of claim 4, further comprising:
the HLR module requests the roaming number from VLR in the overseas GSM network or WCDMA network.
6. The method of claim 4, further comprising:
and the S-CSCF module routes the call which is called as the roaming number of the VOLTE terminal and is sent by the I-CSCF to a media gateway control function, so that the media gateway control function sends the route to VLR in an overseas GSM network or WCDMA network.
7. The method of claim 1,
the data stored by the HLR module comprises: IMSI, MSISDN, authentication information, service authority, roaming authority of GSM network, IMPI and IMPU of VoLTE terminal.
8. A dual-mode gateway for realizing VOLTE terminal international roaming service comprises:
an HLR module and an S-CSCF module; the HLR module executes an HLR function of a GSM network, and the S-CSCF module executes an S-CSCF function of an IMS network;
and the HLR module performs data interaction with the S-CSCF module, and is used for completing international roaming registration for the overseas VOLTE terminal and routing the call taking the VOLTE terminal as a called party.
9. The dual mode gateway of claim 8,
the HLR module is used for receiving a registration and authentication request sent by the VOLTE terminal through an overseas GSM network or a WCDMA network; after finishing the registration and authentication, sending a registration request message to the S-CSCF module; wherein, the message carried in the registration request message includes: IMPI information;
and the S-CSCF module is used for completing IMS domain registration for the VOLTE terminal in an IMS network in the home according to the registration request message and downloading user Profile data from the HSS.
10. The dual mode gateway of claim 9,
and the S-CSCF module is used for sending a registration response message to the HLR module after the VOLTE terminal completes IMS domain registration.
11. The dual mode gateway of claim 8,
the S-CSCF module is used for receiving a call to the VOLTE terminal sent by an I-CSCF in an IMS network in the home, sequentially triggering each AS according to the sequence of IFCs, and sending a roaming number request message to the HLR module;
the HLR module is used for returning a roaming number response message to the S-CSCF module; wherein, the message carried in the roaming number response message includes: the roaming number of the VOLTE terminal.
12. The dual mode gateway of claim 11,
the HLR module is used for requesting the roaming number from VLR in an overseas GSM network or WCDMA network.
13. The dual mode gateway of claim 11,
and the S-CSCF module is used for routing the call which is sent by the I-CSCF and called as the roaming number of the VOLTE terminal to a media gateway control function so that the media gateway control function sends the call to VLR in an overseas GSM network or WCDMA network.
14. The dual mode gateway of claim 8,
the data stored by the HLR module comprises: IMSI, MSISDN, authentication information, service authority, roaming authority of GSM network, IMPI and IMPU of VoLTE terminal.
15. A dual-mode gateway for realizing VOLTE terminal international roaming service comprises:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-7 based on instructions stored in the memory.
16. A communication network, comprising:
a dual mode gateway for enabling international roaming services for VOLTE terminals as claimed in any one of claims 8 to 14.
17. A computer-readable storage medium having stored thereon computer instructions for execution by a processor of the method of any one of claims 1 to 7.
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CN112511997B (en) * | 2020-11-30 | 2022-04-26 | 上海欣方智能系统有限公司 | System and method for cooperation roaming of different regional telecommunication operators |
CN115348550A (en) * | 2022-08-19 | 2022-11-15 | 中国电信股份有限公司 | Roaming short message service implementation method, device, system, electronic equipment and medium |
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