CN109788448B - Service number partition tandem implementation method and system - Google Patents

Service number partition tandem implementation method and system Download PDF

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CN109788448B
CN109788448B CN201711121346.7A CN201711121346A CN109788448B CN 109788448 B CN109788448 B CN 109788448B CN 201711121346 A CN201711121346 A CN 201711121346A CN 109788448 B CN109788448 B CN 109788448B
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network element
service number
user
roaming
home
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CN109788448A (en
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王小玲
陈尚干
张旭红
那晓骏
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Abstract

The invention discloses a service number partition tandem implementation method and a service number partition tandem implementation system, and belongs to the field of mobile communication. The method comprises the following steps: and the roaming VoLTE network element responds to the call request of the user to the service number, and converts the service number into a landing service number according to the position information of the user so as to facilitate the cooperation of the roaming VoLTE network element and the attributive VoLTE network element to complete call connection. Therefore, the dependence on the fixed network IMS network is avoided, and the service process of realizing service number partition tandem in the VoLTE network is simplified.

Description

Service number partition tandem implementation method and system
Technical Field
The present disclosure relates to the field of mobile communications, and in particular, to a method and a system for implementing service number partition tandem.
Background
Under a Voice over LTE (Voice over LTE, Voice over internet protocol (IMS) -based Voice service) network, a user has the characteristics of mobility and roaming, and when certain service numbers needing to be connected in a regional and tandem mode are dialed, such as a municipal hotline 12345, a weather forecast inquiry 12121 and the like, the user wants to be able to access a customer service center of a current region.
A conventional CDMA (code division multiple access) network is a visited domain triggered service, while a VoLTE network is a home domain triggered service. When a user migrates to a VoLTE network, the user wants to maintain the original zone tandem service experience. However, the current service number partition tandem implementation method of the VoLTE network needs to be implemented by cooperation of a VoLTE network at a roaming site, a VoLTE network at a home site, and an IMS network at a roaming site, and the service process is relatively complex.
Disclosure of Invention
One technical problem to be solved by the embodiments of the present disclosure is: the service process of realizing service number partition tandem in the VoLTE network is simplified.
According to an aspect of the present disclosure, a method for implementing service number partition tandem is provided, including: and the roaming VoLTE network element responds to the call request of the user to the service number, and converts the service number into a landing service number according to the position information of the user so as to facilitate the cooperation of the roaming VoLTE network element and the attributive VoLTE network element to complete call connection.
Optionally, the roaming area edge access control BAC network element responds to a call request of a user to a service number, and converts the service number into a landing service number according to the location information of the user, so that the roaming area VoLTE network element and the home area VoLTE network element cooperate to complete call connection according to the landing service number.
Optionally, the roaming-site BAC network element forwards the call request carrying the service number of the landing site to the home-site SCSCF network element; the SCSCF network element of the home location judges whether the called party is an IMS user of the IP multimedia subsystem according to the service number of the landing, if the called party is the IMS user, the call request carrying the service number of the landing and the domain name information thereof is forwarded to the ICSCF network element of the roaming inquiry call session control function for call connection, and if the called party is a non-IMS user, the call request carrying the service number of the landing is forwarded to the MGCF network element of the home location for call connection.
Optionally, the roaming BAC network element forwards the call request carrying the service number and the location information of the user to an MMTEL application server AS of the home multimedia telephone; the home location MMTEL AS adds the position information and the uniform routing access code of the user to a service number and sends the service number to a home location SCSCF network element through a call request; the home SCSCF network element connects the call request to a roaming place number conversion network element corresponding to the uniform routing access code; and the roaming place number conversion network element converts the service number into a landing service number according to the position information of the user, and performs call connection according to the landing service number.
Optionally, the home SCSCF network element determines whether the called party is an IMS user according to the service number, and if the called party is an IMS user, connects the call request carrying the service number and the domain name information thereof to the roaming-site number conversion network element through the roaming-site ICSCF network element, and if the called party is a non-IMS user, connects the call request carrying the service number to the roaming-site number conversion network element through the home MGCF network element.
Optionally, judging whether the called party is an IMS user through the mapping of the telephone number to the ENUM, and acquiring domain name information; and the BAC network element of the roaming place acquires the position information of the user from the PCRF network element.
Optionally, the location information of the user is a tracking area identification code or an administrative partition number.
According to another aspect of the present disclosure, a system for implementing service number partition tandem is provided, including: the roaming area VoLTE network element is used for responding to a call request of a user to a service number and converting the service number into a landing service number according to the position information of the user; and the attributive VoLTE network element is used for completing call connection in cooperation with the roaming VoLTE network element.
Optionally, the roaming place VoLTE network element includes: and the roaming place edge access control BAC network element is used for responding to a call request of a user to the service number and converting the service number into a landing service number according to the position information of the user.
Optionally, the roaming-site VoLTE network element further includes: inquiring an ICSCF network element of a call session control function in a roaming place; the attribution VoLTE network element comprises: a home location service call session control function SCSCF network element and a home location media gateway control function MGCF network element; the roaming site BAC network element is used for forwarding the call request carrying the service number of the landing site to the SCSCF network element of the home site; and the home SCSCF network element is used for judging whether the called party is an IP multimedia subsystem IMS user or not according to the landing service number, forwarding the call request carrying the landing service number and the domain name information thereof to the roaming place ICSCF network element for call connection if the called party is the IMS user, and forwarding the call request carrying the landing service number to the home MGCF network element for call connection if the called party is a non-IMS user.
Optionally, the roaming place VoLTE network element includes: a roaming area BAC network element and a roaming area number conversion network element; the attribution VoLTE network element comprises: home multimedia telephone MMTEL application server AS, home SCSCF network element; the roaming-place BAC network element is used for forwarding a call request carrying a service number and position information of a user to a home-place MMTEL AS; the home location MMTEL AS is used for adding the position information and the uniform routing access code of the user to the service number and sending the service number to the home location SCSCF network element through the call request; the home SCSCSCF network element is used for connecting the call request to the roaming place number conversion network element corresponding to the uniform routing access code; and the roaming place number conversion network element is used for converting the service number into a landing service number according to the position information of the user and carrying out call connection according to the landing service number.
Optionally, the roaming-site VoLTE network element further includes: a roaming place ICSCF network element; the home VoLTE network element further comprises: home MGCF network elements; the home SCSCSCF network element is used for judging whether a called party is an IMS user or not according to the service number, if the called party is the IMS user, the call request carrying the service number and the domain name information thereof is connected to the roaming place number conversion network element through the roaming place ICSCF network element, and if the called party is a non-IMS user, the call request carrying the service number is connected to the roaming place number conversion network element through the home MGCF network element.
Optionally, judging whether the called party is an IMS user through the mapping of the telephone number to the ENUM, and acquiring domain name information; and the BAC network element of the roaming place acquires the position information of the user from the PCRF network element.
The service number partition tandem implementation scheme disclosed by the invention needs to be completed by matching the VoLTE network at the roaming place and the VoLTE network at the home place, does not depend on the IMS network at the fixed network any more, and simplifies the service process of realizing service number partition tandem by the VoLTE network.
Drawings
The drawings that will be used in the description of the embodiments or the related art will be briefly described below. The present disclosure will be more clearly understood from the following detailed description, which proceeds with reference to the accompanying drawings,
it is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without undue inventive faculty.
Fig. 1 is a flowchart of an embodiment of a method for implementing service number partition tandem according to the present disclosure.
Fig. 2 is a flowchart of another embodiment of a method for implementing service number partition tandem according to the present disclosure.
Fig. 3 is a flowchart of another embodiment of a method for implementing service number partition tandem according to the present disclosure.
Fig. 4 is a block diagram of an embodiment of a system for implementing service number zoning tandem according to the present disclosure.
Detailed Description
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.
The service number of the zone tandem refers to a service number corresponding to different landing service numbers in different areas. For example, as shown in table 1, the service number of landing of the service number 962965 in area 1 is +862587654321, wherein "87654321" is a telephone number,
"+ 86" is country information of the telephone number, indicating china, and "25" is the area code of the telephone number. The service number of landing of the service number 962965 in area 2 is Tel: + 862556565656. The service number of landing of the service number 962965 in area 3 is Tel: + 862558557974. The user dials the service number "962965" and if the user is currently in area 1, the call will be connected to the service number "+ 862587654321".
TABLE 1
Service number Region information Service number of landing
Tel:962965 Region 1 Tel:+8625 87654321
Tel:962965 Region 2 Tel:+8625 56565656
Tel:962965 Region 3 Tel:+8625 58557974
Fig. 1 is a flowchart of an embodiment of a method for implementing service number partition tandem according to the present disclosure. As shown in fig. 1, the method of this embodiment includes:
step 110, a roaming place VoLTE network element responds to a call request of a user to a service number, and converts the service number into a landing service number according to the position information of the user;
and step 120, the roaming VoLTE network element and the attributive VoLTE network element are matched to complete subsequent call connection.
The embodiment needs to be completed by matching the roaming VoLTE network with the home VoLTE network, does not depend on the fixed network IMS network, and simplifies the service process of realizing service number partition tandem by the VoLTE network.
Fig. 2 is a flowchart of another embodiment of a method for implementing service number partition tandem according to the present disclosure. As shown in fig. 2, the method of this embodiment includes:
assuming that VoLTE users (UEs, user equipments) in province B roam to province a, when dialing service number 962965, it is desirable to access the service number 02587654321 of the service center of the administrative area currently located in province a nearby.
In step 210, the VoLTE user in province B roams to province a, and dials the service number "962965".
Step 220, a BAC (edge access control) network element (set as BAC a) in the province a roaming place receives a call request Invite (carrying a service number "962965") of a user, acquires location information of the user from a PCRF (Policy and Charging Rules) and then converts the service number into a landing service number "+ 862587654321" according to the location information of the user, and then routes the call request (carrying the landing service number "+ 862587654321") to a SCSCF (service proxy call session control Function) network element (set as scscfb) in the province B of the calling user through a pcsc (proxy call session control Function) network element in the province a roaming place.
The location information of the user is, for example, Tracking Area Identification (TAI) or administrative partition number, which can identify the current location of the user.
Step 230, the SCSCF network element in the B province of the home location forwards the call request (with the landing service number "+ 862587654321") to the MMTEL AS (multimedia telephony application server) in the B province of the home location, which is set AS (MMTEL AS B), according to the initial filtering rule (iFC).
Step 240, after the MMTEL AS in the home location B completes the triggering of the calling supplementary service, the call request (carrying the service number "+ 862587654321") is returned to the SCSCF network element in the home location B.
The calling supplementary service is, for example, calling polyphonic ringtone service.
Where steps 230 and 240 are optionally performed, for example, when the iFC is not set, step 230 may not be performed, and when there is no calling supplementary service, step 240 may not be performed.
Step 250, the SCSCF network element in the province B of the home location judges whether the called party is an IMS user or not by inquiring telephone number mapping (ENUM), if the called party is the IMS user, the ENUM returns the service number of the landing and the domain name information thereof, such as sip: +862587654321 @ js.ctcims.cn, and the SCF network element in the province B of the home location forwards the call request (carrying the service number of the landing and the domain name information thereof) to an Inquiry Call Session Control Function (ICSCF) network element in the province A of the roaming location for call connection until the call reaches the called party.
And step 250', if the called party is a non-IMS user, forwarding the call request (carrying the service number of the landing) to a Media Gateway Control Function (MGCF) network element in the attribution B province for call connection until the call reaches the called party.
In the above embodiment, the BAC network element at the roaming site responds to the call request of the user to the service number, and converts the service number into the service number of landing according to the location information of the user, so that the VoLTE network element at the roaming site and the VoLTE network element at the home site cooperate to complete call connection according to the service number of landing. The method does not depend on the fixed network IMS network any more, and simplifies the service process of realizing service number partition tandem in the VoLTE network.
Fig. 3 is a flowchart of another embodiment of a method for implementing service number partition tandem according to the present disclosure. As shown in fig. 3, the method of this embodiment includes:
assuming that the VoLTE user in province B roams to province a and dials the service number 962965, it is desirable to access the service number 02587654321 of the service center in the administrative area of province a nearby.
In step 310, VoLTE user in province B roams to province a, dialing service number "962965".
Step 320, the BAC network element in the roaming place a province receives the call request of the user to the service number, acquires the location information of the user from the PCRF, and forwards the call request carrying the service number and the location information of the user to the SCSCF network element in the calling user home B province through the pcsccf network element in the roaming place a province.
The location information of the user is, for example, Tracking Area Identification (TAI) or administrative partition number, which can identify the current location of the user.
Step 330, the SCSCF network element in home location B sends the call request to the MMTEL AS (MMTEL AS B) in home location B for calling service triggering.
Step 340, the MMTEL AS in the home location B province adds the location information and the unified routing access code of the user to the service number, for example, + 86251288811962965, and sends to the SCSCF network element in the home location B province through a call request.
Where "+ 8625" is country and area code information of the phone number, "12888" is a uniform routing access code, which points to the a province number conversion network element in the roaming place, "11" represents location information of the user, such as a tracking area identification code or a administrative division number, etc., as described above, and "962965" is a service number dialed by the user.
Step 350, the SCSCF network element in the province B of the home location judges whether the called party is an IMS user or not by inquiring telephone number mapping (ENUM) according to the service number, if the called party is the IMS user, the ENUM returns the service number and the domain name information thereof, such as sip: + 86251288811962965 @ js.ctcims.cn, and the SCSCF network element in the province B of the home location sends a call request carrying the service number (added with the position information and the uniform routing access code of the user) and the domain name information thereof to the ICSCF network element in the province A of the roaming location. Step 360 is then performed.
Step 350', if the called party is a non-IMS user, the SCSCF network element in the B province of the home location sends a call request carrying a service number (added with the location information and the uniform routing access code of the user), such as tel: + 86251288811962965, to the MGCF network element in the B province of the home location. Step 360' is then performed.
Step 360, the ICSCF network element in the roaming area a continues the call to the number conversion network element in the roaming area a according to the uniform routing access code 12888.
In step 360', the home B province MGCF network element continues the call to the roaming a province number conversion network element according to the unified routing access code 12888.
Step 370, the number conversion network element in province a of the roaming place converts the service number "962965" into the service number "+ 862587654321" of the landing according to the location information "11" of the user, and performs call connection according to the service number of the landing, that is, connects the call to the service number of the landing.
In the above embodiment, the home VOLTE network MMTEL AS supplements the location information and the uniform routing access code of the user according to the BAC information of the roaming place, routes the call request to the number conversion network element of the roaming place for number conversion according to the uniform routing access code, and continues to the called party. The method does not depend on the fixed network IMS network any more, and simplifies the service process of realizing service number partition tandem in the VoLTE network.
Fig. 4 is a block diagram of an embodiment of a system for implementing service number zoning tandem according to the present disclosure. As shown in fig. 4, the system of this embodiment includes:
the roaming area VoLTE network element 410 is used for responding to a call request of a user to a service number, and converting the service number into a landing service number according to the position information of the user;
and the home VoLTE network element 420 is used for completing call connection in cooperation with the roaming VoLTE network element 410.
The roaming area VoLTE network element 410 includes: and the roaming place edge access control BAC network element is used for responding to a call request of a user to the service number and converting the service number into a landing service number according to the position information of the user.
The roaming area VoLTE network element 410 further includes: inquiring an ICSCF network element of a call session control function in a roaming place; the home VoLTE network element 420 includes: a home location service call session control function SCSCF network element and a home location media gateway control function MGCF network element; the roaming site BAC network element is used for forwarding the call request carrying the service number of the landing site to the SCSCF network element of the home site; and the home SCSCF network element is used for judging whether the called party is an IP multimedia subsystem IMS user or not according to the landing service number, forwarding the call request carrying the landing service number and the domain name information thereof to the roaming place ICSCF network element for call connection if the called party is the IMS user, and forwarding the call request carrying the landing service number to the home MGCF network element for call connection if the called party is a non-IMS user.
The roaming area VoLTE network element 410 includes: a roaming area BAC network element and a roaming area number conversion network element; the home VoLTE network element 420 includes: home multimedia telephone MMTEL application server AS, home SCSCF network element; the roaming BAC network element is used for forwarding the call request carrying the service number and the position information of the user to the home MMTEL AS; the home location MMTEL AS is used for adding the position information and the uniform routing access code of the user to the service number and sending the service number to the home location SCSCF network element through the call request; the home SCSCSCF network element is used for connecting the call request to the roaming place number conversion network element corresponding to the uniform routing access code; and the roaming place number conversion network element is used for converting the service number into a landing service number according to the position information of the user and carrying out call connection according to the landing service number.
The roaming area VoLTE network element 410 further includes: a roaming place ICSCF network element; home VoLTE network element 420 further includes: home MGCF network elements; and the home SCSCF network element is used for judging whether the called party is an IMS user or not according to the service number, connecting the call with the service number and the domain name information to the roaming place number conversion network element through the roaming place ICSCF network element if the called party is the IMS user, and connecting the call with the service number to the roaming place number conversion network element through the home MGCF network element if the called party is a non-IMS user.
Judging whether a called party is an IMS user or not through telephone number mapping ENUM and acquiring domain name information; and the BAC network element of the roaming place acquires the position information of the user from the PCRF network element.
The embodiment needs to be completed by matching the roaming VoLTE network with the home VoLTE network, does not depend on the fixed network IMS network, and simplifies the service process of realizing service number partition tandem by the VoLTE network.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (9)

1. A service number partition tandem implementation method comprises the following steps:
the roaming place edge access control BAC network element responds to a call request of a user to a service number, and converts the service number into a landing service number according to the position information of the user;
the roaming-place BAC network element forwards the call request carrying the service number of the landing place to a service call session control function SCSCF network element of the home location;
the SCSCF network element of the home location judges whether the called party is an IMS user of the IP multimedia subsystem according to the service number of the landing, if the called party is the IMS user, the call request carrying the service number of the landing and the domain name information thereof is forwarded to the ICSCF network element of the roaming inquiry call session control function for call connection, and if the called party is a non-IMS user, the call request carrying the service number of the landing is forwarded to the MGCF network element of the home location for call connection.
2. A service number partition tandem implementation method comprises the following steps:
the roaming BAC network element forwards a call request carrying a service number and the position information of a user to an MMTEL application server AS of the home multimedia telephone;
the home location MMTEL AS adds the position information and the uniform routing access code of the user to a service number and sends the service number to a home location SCSCF network element through a call request;
the home SCSCF network element connects the call request to a roaming place number conversion network element corresponding to the uniform routing access code;
and the roaming place number conversion network element converts the service number into a landing service number according to the position information of the user, and performs call connection according to the landing service number.
3. The method of claim 2, wherein,
the home SCSCSCF network element judges whether the called party is an IMS user according to the service number, if the called party is the IMS user, the call request carrying the service number and the domain name information thereof is connected to a roaming place number conversion network element through the roaming place ICSCF network element, and if the called party is a non-IMS user, the call request carrying the service number is connected to the roaming place number conversion network element through the home MGCF network element.
4. A method according to claim 1 or 3, wherein judging whether the called party is an IMS subscriber by telephone number mapping ENUM and obtaining domain name information; and the BAC network element of the roaming place acquires the position information of the user from the PCRF network element.
5. A method according to any one of claims 1 to 3, wherein the user's location information is a tracking area identity or an administrative partition number.
6. A service number partition tandem implementation system comprises:
the roaming area VoLTE network element is used for responding to a call request of a user to a service number and converting the service number into a landing service number according to the position information of the user;
the attributive VoLTE network element is used for completing call connection in cooperation with the roaming VoLTE network element;
the roaming VoLTE network element comprises: the roaming place edge access control BAC network element is used for responding to a call request of a user to a service number and converting the service number into a landing service number according to the position information of the user;
the roaming VoLTE network element further comprises: inquiring an ICSCF network element of a call session control function in a roaming place;
the attribution VoLTE network element comprises: a home location service call session control function SCSCF network element and a home location media gateway control function MGCF network element;
wherein the content of the first and second substances,
the roaming site BAC network element is used for forwarding the call request carrying the service number of the landing site to the SCSCF network element of the home site;
and the home SCSCF network element is used for judging whether the called party is an IP multimedia subsystem IMS user or not according to the landing service number, forwarding the call request carrying the landing service number and the domain name information thereof to the roaming place ICSCF network element for call connection if the called party is the IMS user, and forwarding the call request carrying the landing service number to the home MGCF network element for call connection if the called party is a non-IMS user.
7. A service number partition tandem implementation system comprises:
the roaming area VoLTE network element is used for responding to a call request of a user to a service number and converting the service number into a landing service number according to the position information of the user;
the attributive VoLTE network element is used for completing call connection in cooperation with the roaming VoLTE network element;
the roaming VoLTE network element comprises: a roaming area BAC network element and a roaming area number conversion network element;
the attribution VoLTE network element comprises: home multimedia telephone MMTEL application server AS, home SCSCF network element;
wherein the content of the first and second substances,
the roaming BAC network element is used for forwarding the call request carrying the service number and the position information of the user to the home MMTEL AS;
the home location MMTEL AS is used for adding the position information and the uniform routing access code of the user to the service number and sending the service number to the home location SCSCF network element through the call request;
the home SCSCSCF network element is used for connecting the call request to the roaming place number conversion network element corresponding to the uniform routing access code;
and the roaming place number conversion network element is used for converting the service number into a landing service number according to the position information of the user and carrying out call connection according to the landing service number.
8. The system of claim 7, wherein,
the roaming VoLTE network element further comprises: a roaming place ICSCF network element;
the home VoLTE network element further comprises: home MGCF network elements;
wherein the content of the first and second substances,
and the home SCSCF network element is used for judging whether the called party is an IMS user or not according to the service number, connecting the call with the service number and the domain name information to the roaming place number conversion network element through the roaming place ICSCF network element if the called party is the IMS user, and connecting the call with the service number to the roaming place number conversion network element through the home MGCF network element if the called party is a non-IMS user.
9. The system of claim 6 or 8, wherein whether the called party is an IMS subscriber is judged by mapping ENUM to a telephone number, and domain name information is acquired; and the BAC network element of the roaming place acquires the position information of the user from the PCRF network element.
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