CN103078826A - Call establishment method of number portability user to be called, I-CSCF (interrogating call session control function) and IMS (IP multimedia subsystem) - Google Patents

Call establishment method of number portability user to be called, I-CSCF (interrogating call session control function) and IMS (IP multimedia subsystem) Download PDF

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CN103078826A
CN103078826A CN2011103264506A CN201110326450A CN103078826A CN 103078826 A CN103078826 A CN 103078826A CN 2011103264506 A CN2011103264506 A CN 2011103264506A CN 201110326450 A CN201110326450 A CN 201110326450A CN 103078826 A CN103078826 A CN 103078826A
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taking
user identity
public user
network users
cscf
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朱小景
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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 call establishment method of a number portability user to be called, an I-CSCF (interrogating call session control function) and an IMS (IP multimedia subsystem) and relates to the technical field of number portability. The call establishment method comprises the following steps that a calling which is started for the number portability user is routed into the I-CSCF in the IMS domain with which the number portability user signs a contract for the first time; the I-CSCF acquires a new public user identity from an HSS (home subscriber server) in the IMS domain with which the number portability user signs the contract for the first time; the new public user identity is identified to be the public user identity which is distributed for the number portability user through an IMS domain to which the number portability user transfers; and the I-CSCF uses the new public user identity to establish a call of a calling party on the number portability user. The call establishment method of the number portability user to be called, the I-CSCF and the IMS provide a call service of the user to be called when the user performs number portability.

Description

The number of taking turns network users and is called call-establishing method, I-CSCF and IMS
Technical field
The present invention relates to the number of taking and turn the network technology field, relate in particular to the number of taking and turn network users and be called call-establishing method, I-CSCF and IMS.
Background technology
The number of taking turns net and refers to that the user does not change and change signatory operator in the situation of Subscriber Number or user ID.The user ID in IMS territory has two kinds: SIP URI (user name
Figure BDA0000101687200000011
Domain name) or TELURI (telephone number
Figure BDA0000101687200000012
Domain name), different operators adopts different domain names.The local number portability of IP Multimedia System IMS (IP Multimedia Subsystem) system refers to that the user carries subscription network for the first time and turns net to new network for the public user identity (comprising domain name) of its distribution.IMS user's number of taking turns net to other IMS territories, and the user obtains new private user identity bringing the IMS network in, between IMS user with take that phase inversion closes call business continue and relate to two kinds:
The number of taking turns network users and does caller: according to the IMS operation flow; the number of taking turns network users and uses private user identity to carry out start-up logging in new IMS territory; user equipment (UE) (UserEquipment) and Proxy Call Session Control Function P-CSCF (Proxy Call SessionControl Function) can normally obtain the IP address of service call conversation control function S-CSCF (Serving Call Session Control Function), and calling service continues and can normally carry out.
The number of taking turns network users and does called: according to the IMS operation flow, calling is carried out the message route according to SIP URI, do when called when taking the conversion family, Calling Side S-CSCF sends to domain name system DNS (Domain Name System) with called SIP URI information and resolves, because taking the domain name of the SIP URI at conversion family still is the domain name of carrying IMS outside, calling will be routed to called former subscription network, but the user moves out, and former network can't be finished regular traffic and continue.
Summary of the invention
In view of this, the technical problem that the present invention will solve provides a kind of number of taking and turns network users and do called call-establishing method, and turning in user's number of taking provides this user as called call business in the net situation.
A kind of number of taking turns network users and does called call-establishing method, comprising: the described number of taking is turned calling that network users initiates be routed to the described number of taking and turn for the first time query call conversation control function I-CSCF in the signatory IP Multimedia System IMS territory of network users; Described I-CSCF from the described number of taking turn network users for the first time the home subscriber server HSS the signatory IMS territory obtain new public user identity; Described I-CSCF uses described new public user identity to set up described caller turns network users to the described number of taking calling; Wherein, described new public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the described number of taking turns the public user identity that network users distributes in the described number of taking.
According to an embodiment of the inventive method, described calling be routed to the described number of taking turn network users for the first time the query call conversation control function I-CSCF in the signatory IMS territory comprise: the INVITE that described caller sends is routed to described I-CSCF; Wherein, the value of Request URI parameter is to turn the former public user identity that network users distributes for the described number of taking in the signatory IMS territory first time that the described number of taking turns network users in the described INVITE.
An embodiment according to the inventive method, described I-CSCF from the described number of taking turn network users for the first time the home subscriber server HSS the signatory IMS territory obtain new public user identity and comprise: described I-CSCF sends described former public user identity to described HSS, and described HSS returns the interconnected boundary Control function IBCF address in the IMS territory of contracting described new public user identity and the described number of taking turn network users for the first time.
An embodiment according to the inventive method, described I-CSCF uses described new public user identity to set up described caller the calling that the described number of taking turns network users is comprised: described I-CSCF compares the value of the Request URI parameter in described new public user identity and the described INVITE, if inconsistent, the value of Request URI parameter in the described INVITE is replaced with described new public user identity, described INVITE is forwarded to described IBCF; Described IBCF is forwarded to the described number of taking with described INVITE and turns IBCF2 in the IMS territory that the network users number of taking changes over to, and described IBCF2 is transmitted to the described number of taking with described INVITE and turns network users.
According to an embodiment of the inventive method, the form of described former public user identity and new public user identity is user name
Figure BDA0000101687200000031
Domain name or telephone number
Figure BDA0000101687200000032
Domain name.
According to an embodiment of the inventive method, described HSS stores described former public user identity, described new public user identity and described IBCF address.
Method of the present invention is in the situation that the number of taking turns network users and does called, turn network users in the number of taking and preserve for the first time original public user identity of this user and the number of taking thereof among the ownership HSS of subscription network and change network over to and be the corresponding relation of the new public user identity of its distribution, I-CSCF obtains new public user identity and sets up and call out.
Another technical problem that the present invention will solve provides a kind of query call conversation control function I-CSCF, turns in user's number of taking and supports this user as called call business in the net situation.
A kind of query call conversation control function I-CSCF comprises: the receipt of call unit is used for receiving the calling that the number of taking is turned the network users initiation; The inquiry identify unit is used for obtaining new public user identity from home subscriber server HSS; Wherein, described new public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the described number of taking turns the public user identity that network users distributes in the described number of taking.Set up calling unit, be used for using described new public user identity to set up the calling that the described number of taking is turned network users; Wherein, described I-CSCF and HSS turn the first time of network users in the signatory IMS territory in the described number of taking.
I-CSCF embodiment according to the present invention, described receipt of call unit receives the INVITE that described caller sends; Wherein, the value of Request URI parameter is to turn the former public user identity that network users distributes for the described number of taking in the signatory IMS territory first time that the described number of taking turns network users in the described INVITE.
I-CSCF embodiment according to the present invention, described inquiry identify unit sends described former public user identity to described HSS, and described HSS returns the interconnected boundary Control function IBCF address of the first time in the signatory IMS territory that described new public user identity and the described number of taking turn network users.
I-CSCF embodiment according to the present invention, the described calling unit of setting up compares the value of the Request URI parameter in described new public user identity and the described INVITE, if inconsistent, the value of Request URI parameter in the described INVITE is replaced with described new public user identity, described INVITE is forwarded to described IBCF.
Method of the present invention is in the situation that the number of taking turns network users does calledly, and I-CSCF turns network users from the number of taking and obtains for the first time the number of taking among the ownership HSS the subscription network and change network over to and set up for the new public user identity of its distribution and call out.
Another technical problem that the present invention will solve provides a kind of IMS system, turns in user's number of taking and supports this user as called call business in the net situation.
A kind of IMS comprises above-mentioned I-CSCF; Described system also comprises HSS, and described HSS stores in the described IMS territory in the IMS territory that changes over to for the former public user identity of user assignment and the described user number of taking and is the new public user identity of described user assignment.
An embodiment of system according to the invention, the data of described HSS real-time update storage; Described HSS turns the direct synchrodata of grid database from the number of taking, or by the middle more new data of the network element classification method of synchronization of distributing.
IMS of the present invention is in the situation that the number of taking turns network users does calledly, and the I-CSCF in the system obtains the number of taking from HSS to change network over to be that the number of taking turns new public user identity that network users distributes and sets up and call out.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 turns the flow chart that network users is an embodiment of called call-establishing method for the number of taking according to the present invention;
Fig. 2 turns the flow chart that network users is another embodiment of called call-establishing method for the number of taking according to the present invention;
Fig. 3 is the schematic diagram according to the embodiment of I-CSCF of the present invention;
Fig. 4 is the schematic diagram according to an embodiment of IMS of the present invention system;
Fig. 5 turns the schematic diagram of an embodiment of network data renewal for the number of taking according to the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The present invention has overcome the number of taking and has turned network users and do when called call business and can't use, turn network users in the number of taking and preserve for the first time original public user identity of this user and this user's number of taking thereof among the HSS of subscription network and change network over to and be the corresponding relation of the new public user identity of this user assignment, I-CSCF obtains new public user identity and sets up and call out.
Below in conjunction with each figure and embodiment technical scheme of the present invention is carried out many-sided description.
Fig. 1 turns the flow chart that network users is an embodiment of called call-establishing method for the number of taking according to the present invention.As shown in Figure 1:
Step 102: caller turns network users to the number of taking and makes a call.Calling is routed to the number of taking and turns for the first time query call conversation control function I-CSCF in the signatory IP Multimedia System IMS territory of network users.
Step 103:I-CSCF from the number of taking turn network users for the first time the home subscriber server HSS the signatory IMS territory obtain new public user identity.
Step 104:I-CSCF uses new public user identity to set up caller turns network users to the number of taking calling.
New public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the number of taking turns the public user identity that network users distributes in the number of taking.
Turn network users in the number of taking and preserve for the first time original public user identity of this user and this user's number of taking thereof among the HSS of subscription network and change network over to and be the corresponding relation of the new public user identity of this user assignment, I-CSCF obtains new public user identity and sets up and call out.
Fig. 2 turns the flow chart that network users is another embodiment of called call-establishing method for the number of taking according to the present invention.As shown in Figure 2, the digitized representation meaning is after the device name: 1 expression master home territory equipment, the 2 expressions called first time of subscription network home domain equipment, the called current subscription network equipment of 3 expressions.
Step 201, caller makes a call to the called subscriber, and the INVITE that caller is sent arrives the I-CSCF2 of called first time of subscription network home domain by CSCF1 equipment.The value of Request URI parameter is to turn the former public user identity that network users distributes for the number of taking in the signatory IMS territory first time that the number of taking turns network users in the INVITE.
Step 202, I-CSCF2 sends former public user identity (SIP URI1) to the HSS2 inquiry, because the number of taking of called subscriber goes out net, HSS2 feeds back to I-CSCF2 with new public user identity (SIPURI2) and corresponding IBCF2 address; New public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the number of taking turns the public user identity that network users distributes in the number of taking.
Step 203, I-CSCF2 compares the value of the Request URI parameter in new public user identity and the INVITE, if inconsistent, the value of Request URI parameter in the INVITE is replaced with new public user identity.
Step 204, IBCF is forwarded to IBCF2 with INVITE.
Step 205, IBCF2 is forwarded to IBCF3 with INVITE.
Step 206, IBCF3 transmits INVITE, by Traffic handling device forwards such as CSCF3 to the called subscriber and set up session.
Step 207, called UE use 183 message with SDP to respond.
The session establishment process normally continues.
According to one embodiment of present invention, the form of former public user identity and new public user identity is user name
Figure BDA0000101687200000061
Domain name or telephone number
Figure BDA0000101687200000062
Domain name.
According to one embodiment of present invention, HSS stores former public user identity, new public user identity and IBCF address.
According to one embodiment of present invention, I-CSCF communicates by letter with HSS by Cx interface, and Cx interface adopts Diameter.
Fig. 3 is the schematic diagram according to the embodiment of I-CSCF of the present invention. as shown in the figure:
I-CSCF31 comprises receipt of call unit 311, inquiry identify unit 312 and sets up calling unit 313.Receipt of call unit 311 receives caller the number of taking is turned the calling that network users is initiated.Inquiry identify unit 312 obtains new public user identity from home subscriber server HSS, and new public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the number of taking turns the public user identity that network users distributes in the number of taking.Setting up calling unit 313 uses new public user identity to set up caller turns network users to the number of taking calling.I-CSCF and HSS turn the first time of network users in the signatory IMS territory in the number of taking.
According to one embodiment of present invention, the value of Request URI parameter is to turn the former public user identity that network users distributes for the number of taking in the signatory IMS territory first time that the number of taking turns network users in the INVITE.
According to one embodiment of present invention, inquiry identify unit 312 sends former public user identity to HSS, and HSS returns the interconnected boundary Control function IBCF address in the IMS territory of contracting new public user identity and the number of taking turn network users for the first time.
According to one embodiment of present invention, setting up calling unit 313 compares the value of the Request URI parameter in new public user identity and the INVITE, if inconsistent, the value of Request URI parameter in the INVITE is replaced with new public user identity, INVITE is forwarded to IBCF.
According to one embodiment of present invention, inquiry identify unit 312 obtains new public user identity and IBCF address by Cx interface from HSS.Cx interface adopts Diameter.
Fig. 4 is the schematic diagram according to the embodiment of IMS of the present invention.IMS comprises above-mentioned I-CSCF41 and HSS42, is the new public user identity of user assignment in the IMS territory that changes over to for the former public user identity of user assignment and user's number of taking in the HSS42 storage IMS territory.
Fig. 5 turns the schematic diagram of an embodiment of network data renewal for the number of taking according to the present invention.As shown in the figure: the number of taking turns the information that all numbers of taking of grid database 501 storage turn network users, and information comprises: be the new public user identity of user assignment in the IMS territory that the number of taking is produced, the IMS territory that the number of taking changes over to, for the first time signatory IMS territory for the former public user identity of user assignment with in the IMS territory that user's number of taking changes over to.Subscriber Number can be SIP URI sign, TEL URI sign or E.164 identify.
HSS 503,504,505 stores in the IMS territories and user and service related information, this device storage number of taking goes out the user ID (SIP URI1) of for the first time subscription network distribution of network users, the subscriber identity data (SIP URI2) that the number of taking changes network allocation over to, and processes with the common finishing service of other network elements of IMS.The data of HSS503,504, the storage of 505 real-time update.HSS503 turns grid database 501 direct synchrodatas from the number of taking, and HSS 504,505 adopts more new data of the classification method of synchronization by distribution network element 502.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the present invention's design is suitable for special-purpose.

Claims (13)

1. the number of taking turns network users and does called call-establishing method, comprising:
The described number of taking is turned calling that network users initiates to be routed to the described number of taking and to turn for the first time query call conversation control function I-CSCF in the signatory IP Multimedia System IMS territory of network users;
Described I-CSCF from the described number of taking turn network users for the first time the home subscriber server HSS the signatory IMS territory obtain new public user identity;
Described I-CSCF uses described new public user identity to set up the calling that the described number of taking is turned network users;
Wherein, described new public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the described number of taking turns the public user identity that network users distributes in the described number of taking.
2. the method for claim 1 is characterized in that:
Described I-CSCF from the described number of taking turn network users for the first time the home subscriber server HSS the signatory IMS territory obtain new public user identity and comprise:
Described I-CSCF sends former public user identity to described HSS, and described HSS returns the interconnected boundary Control function IBCF address of the first time in the signatory IMS territory that described new public user identity and the described number of taking turn network users;
Wherein, described former public user identity is to turn the public user identity that network users distributes for the described number of taking in the signatory IMS territory first time that the described number of taking turns network users.
3. method as claimed in claim 2 is characterized in that:
Described calling be routed to the described number of taking turn network users for the first time the query call conversation control function I-CSCF in the signatory IMS territory comprise:
The INVITE that described caller sends is routed to described I-CSCF;
Wherein, the value of Request URI parameter is described former public user identity in the described INVITE.
4. method as claimed in claim 3 is characterized in that:
Described I-CSCF uses described new public user identity foundation that the calling that the described number of taking turns network users is comprised:
Described I-CSCF compares the value of the Request URI parameter in described new public user identity and the described INVITE, if inconsistent, the value of Request URI parameter in the described INVITE is replaced with described new public user identity, described INVITE is forwarded to described IBCF;
Described IBCF is forwarded to the described number of taking with described INVITE and turns IBCF2 in the IMS territory that the network users number of taking changes over to, and described IBCF2 is transmitted to the described number of taking with described INVITE and turns network users.
5. such as each described method of claim 2 to 4, it is characterized in that:
The form of described former public user identity and new public user identity is user name
Figure FDA0000101687190000021
Domain name or telephone number
Figure FDA0000101687190000022
Domain name.
6. such as each described method of claim 2 to 4, it is characterized in that:
Described HSS stores described former public user identity, described new public user identity and described IBCF address.
7. query call conversation control function I-CSCF comprises:
The receipt of call unit is used for receiving the calling that the number of taking is turned the network users initiation;
The inquiry identify unit is used for obtaining new public user identity from home subscriber server HSS; Wherein, described new public user identity is that to turn the IMS territory that the network users number of taking changes over to be that the described number of taking turns the public user identity that network users distributes in the described number of taking.
Set up calling unit, be used for using described new public user identity to set up the calling that the described number of taking is turned network users;
Wherein, described I-CSCF and HSS turn the first time of network users in the signatory IMS territory in the described number of taking.
8. I-CSCF as claimed in claim 7 is characterized in that:
Described inquiry identify unit sends former public user identity to described HSS, and described HSS returns the IBCF address of the first time in the signatory IMS territory that described new public user identity and the described number of taking turn network users;
Wherein, described former public user identity is to turn the public user identity that network users distributes for the described number of taking in the signatory IMS territory first time that the described number of taking turns network users.
9. I-CSCF as claimed in claim 8 is characterized in that:
Described receipt of call unit receives the INVITE that described caller sends;
Wherein, the value of Request URI parameter is described former public user identity in the described INVITE.
10. I-CSCF as claimed in claim 9 is characterized in that:
The described calling unit of setting up compares the value of the Request URI parameter in described new public user identity and the described INVITE, if inconsistent, the value of Request URI parameter in the described INVITE is replaced with described new public user identity, described INVITE is forwarded to described IBCF.
11. an IP Multimedia System IMS is characterized in that:
Comprise such as each described I-CSCF of claim 7 to 10.
12. system as claimed in claim 11 is characterized in that:
Described system also comprises HSS, and described HSS stores in the described IMS territory in the IMS territory that changes over to for the former public user identity of user assignment and the described user number of taking and is the new public user identity of described user assignment.
13. system as claimed in claim 12 is characterized in that:
The data of described HSS real-time update storage;
Described HSS turns the direct synchrodata of grid database from the number of taking, or by distributing more new data of the network element classification method of synchronization.
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CN110248350A (en) * 2019-07-02 2019-09-17 中国联合网络通信集团有限公司 The number of taking turns the communication means and call conversation control function entity of net
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CN110324814A (en) * 2019-07-02 2019-10-11 中国联合网络通信集团有限公司 International roaming communication means, gateway exchange, conversation control function entity and communication system
CN110324812A (en) * 2019-07-02 2019-10-11 中国联合网络通信集团有限公司 International roaming communication means, international gateway, application server and communication system
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