CN1917457A - Method for connecting to IP multimedia sub system - Google Patents
Method for connecting to IP multimedia sub system Download PDFInfo
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- CN1917457A CN1917457A CN200510090802.7A CN200510090802A CN1917457A CN 1917457 A CN1917457 A CN 1917457A CN 200510090802 A CN200510090802 A CN 200510090802A CN 1917457 A CN1917457 A CN 1917457A
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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
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
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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
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1095—Inter-network session transfer or sharing
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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
- 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
- H04L65/80—Responding to QoS
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- General Business, Economics & Management (AREA)
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The method comprises: setting more than one S-CSCF in IMS; each S-CSCF supports an access mode; when the terminal initiates a register request to IMS, it informs the IMS the access technology used by itself at the same time; after receiving the register request, IMS determines the access mode belonging to said access technology and currently used by the terminal, and further determines a S-CSCF supported by the terminal, and informs the address of the S-CSCF to the terminal; the terminal accesses IMS through the S-CSCF.
Description
Technical field
The present invention relates to the access technology field, be specifically related to a kind of method that inserts IP Multimedia System.
Background technology
IP Multimedia System (IMS, IP Multimedia Subsystem) is the subsystem of the support IP multimedia service that proposes in Release 5 release criteria of third generation partner plan (3GPP, Third Generation Partnership Project).IMS mainly comprises: functional entitys such as CSCF (CSCF, Call Session Control Function), MGCF, media gateway, media resource function control section, media resource function processing section, Breakout Gateway Control Function.CSCF is the kernel entity of IMS, it comprises proxy CSCF (Proxy-CSCF), inquiry CSCF (I-CSCF, Interrogating-CSCF) and serving CSCF (S-CSCF, Serving-CSCF), wherein, P-CSCF is the first step of terminal contact IMS, and the inlet that I-CSCF provides terminal to arrive the IMS home domain, S-CSCF are finished the conversation control function to terminal.Simultaneously, IMS also shares home subscriber server (HSS, Home Subscriber Server) with circuit commutative field and packet-switched domain, has preserved the data relevant with service with terminal among the HSS.
The core characteristics of IMS be based on conversation initialized protocol (SIP, Session Initiation Protocol) and with the independence of access technology.The IMS that current 3GPP proposes only supports the mobile access way of 2G and 3G, can't support other access way as: fixing access way etc., this just can't give full play to the effect of IMS based on the general-purpose platform of SIP session.
At next generation network (NGN, Next Generation Network) in the framework, terminal and Access Network are various, and have only one kind of IMS based on the core net of SIP session, therefore, realize that IMS simultaneously for the terminal that adopts different access waies to insert self provides service, just needs IMS to support various access waies in network frame, network functional entity, service quality (QoS, Quality of Service) and security and various aspects comprehensively.At present, correlation function model, message flow and the agreement etc. that fixed broadband inserts IMS (FBI, Fixed Broadband Access toIMS) have been proposed among the technical report of 3GPP (TR, Technology Report) 24.819 v0.2.0.
According to the thought of the network integration, the terminal that adopts different access waies at present is to insert IMS by identical IMS entity, and promptly an IMS entity is supported plurality of access modes simultaneously.Terminal needs to initiate register flow path to IMS before inserting IMS, to obtain the address information that inserts the required S-CSCF of IMS, Fig. 1 is subscriber equipment (UE, User Equipment) the message flow sequential chart of in IMS, registering, as shown in Figure 1, its key step comprises:
Step 101:UE initiates registration (Register) request to P-CSCF, and this request message carries the enrollment status of UE and the IMS home domain title of UE.
Before initiating register requirement, UE can obtain the address information of P-CSCF from the Access Network that self belongs to.
After step 102:P-CSCF receives register requirement, the IMS home domain title of the UE that carries according to this login request message, parse the inlet of the IMS home domain of UE: the address of I-CSCF, and to this I-CSCF forwarding register requirement, this login request message carries UE enrollment status.
After step 103:I-CSCF received register requirement, (this UAR message was carried UE enrollment status for UAR, User-Authorization-Request) message, confirms this UE IMS service of whether having contracted with notice HSS to send user-authorization-request to HSS.
Generally, I-CSCF self preserves the HSS address; Do not preserve if, then, obtain the HSS address to SLF according to order relations positioning function (SLF, the Subscription Locator Function) address of self preserving.
After step 104:HSS receives UAR message, return user-authorization-answer (UAA, User-Authorization-Answer) message to I-CSCF.If HSS determines UE in the IMS service of self having contracted according to UE enrollment status, then this UAA message carries UE enrollment status and HSS is the address information of the selected S-CSCF of UE simultaneously.
After step 105:I-CSCF receives UAA message, the address information of the S-CSCF that carries according to this UAA message, the S-CSCF that the S-CSCF address information of carrying to this UAA message is pointed to transmits register requirement, and this login request message is carried UE enrollment status.
After step 106:S-CSCF received register requirement, (this SAR message had been carried the related service information of UE enrollment status and S-CSCF for SAR, Server-Assignment-Request) message to HSS send server request for allocation.
After step 107:HSS receives SAR message, return server-assignment to S-CSCF and reply that (this SAA message is carried UE enrollment status for SAA, Server-Assignment-Answer) message, and simultaneously HSS preserves the related service information of the S-CSCF that SAR message carries.
After step 108～110:S-CSCF receives SAA message, 200 response (OK) forwards that will carry UE enrollment status and S-CSCF address information by I-CSCF are given P-CSCF, after P-CSCF receives 200 response messages, send 200 response messages that carry the S-CSCF address information to UE.
After UE receives 200 response messages, preserve the address information of the S-CSCF that this 200 response message carries, after this just can insert IMS by the S-CSCF that the S-CSCF address information that this 200 response message carries is pointed to.
By above process as can be seen, in the IMS registration process, HSS may give the same S-CSCF of terminal distribution that adopts different access waies to insert IMS, like this, adopt the terminal of different access waies to insert IMS by shared same S-CSCF, that is to say that S-CSCF need support different access waies, this can produce following shortcoming:
One, cause the professional control ability of S-CSCF to descend.Because various access technologies have its characteristic separately, for example: adopt when fixedly the fixed terminal of access way inserts IMS, can mutual sip message not compressed, and the portable terminal that adopts mobile access way must compress mutual sip message when inserting IMS etc., therefore, there is some difference to the processing of the terminal that inserts by different way for IMS.And S-CSCF is the kernel entity of IMS, its responsible session management, calling control etc. to terminal, and when S-CSCF supported plurality of access modes simultaneously, its function can become increasingly complex, and must make the professional control ability of S-CSCF descend.
Two, influence IMS carrying out to some business.The complexity that adopts the terminal access to IMS of different access waies is different, and the access contention that this will cause terminal causes certain terminal access to IMS more, and the access of the terminal of other kind is less, has influenced IMS carrying out some business.For example: it is relatively easy that fixed terminal inserts IMS, but its bandwidth that expends is more much bigger than portable terminal simultaneously, therefore, in an IMS home domain, insert the load capacity that too much fixed terminal very likely exhausts S-CSCF, thereby make portable terminal and IMS occur situations such as the continuous resend message in slow, the overtime back of message response when mutual, so not only can make the mobile service of IMS be difficult to carry out, and resend message can be wasted interface-free resources.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for a kind of IMS of access, the access efficiency when supporting plurality of access modes simultaneously to improve IMS.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that inserts IMS is provided with the S-CSCF more than in IMS, and each S-CSCF supports a kind of access way, and this method comprises:
A, terminal are initiated register requirement to IMS, notify IMS self access technology of current employing simultaneously;
After B, IMS receive register requirement, determine the affiliated access way of access technology of the current employing of described terminal, further determine the S-CSCF that a support terminal inserts, and the address information of this S-CSCF is returned to terminal;
C, terminal are received the address information of this S-CSCF, after this insert IMS by this S-CSCF.
The access way that described S-CSCF supports is: mobile access way or fixedly access way or WLAN (wireless local area network) access way.
Described mobile access way comprises: a kind of or combination in any in 3GPP-global system for mobile communications enhanced wireless Access Network (GERAN), 3GPP-universal mobile telecommunications system land radio access web (UTRAN)-mode of frequency division duplexing (FDD), 3GPP-UTRAN-TDD mode (TDD), 2,000 four kinds of access technologies of 3GPP-Wideband Code Division Multiple Access (WCDMA) (CDMA).
Described fixedly access way comprises: ADSL (Asymmetric Digital Subscriber Line) (ADSL), ADSL2, ADSL2+, rate adaptation DSL (RADSL), symmetrical DSL (SDSL), high speed DSL (HDSL), HDSL2, single to a kind of or combination in any in high speed DSL (G.SHDSL), ultrahigh speed DSL (VDSL), ten kinds of access technologies of integrated services digital network DSL (IDSL).
Described WLAN (wireless local area network) access way comprises: a kind of or combination in the 802.11a of IEEE (IEEE), two kinds of access technologies of IEEE802.11b.
Described method further comprises: the HSS among the IMS preserves the corresponding relation of the access way of each S-CSCF and its support, preserves the corresponding relation of the access technology that each access way comprises with it simultaneously;
The described IMS of step B determines that the S-CSCF that a support terminal inserts is specially:
HSS is in the corresponding relation of the access technology that each access way of self preserving comprises with it, find the affiliated access way of access technology of the current employing of terminal, the corresponding relation of each S-CSCF that preserves according to self and the access way of its support then, the S-CSCF of the access way that a selected access technology of supporting the current employing of this terminal is affiliated.
The access technology of the current employing of the described terminal notice IMS self of steps A is specially:
Terminal is carried at the access technology of self current employing in the access style field of Access Network informational message head of login request message and notifies IMS.
Described steps A is specially:
Terminal is initiated register requirement by the I-CSCF of the P-CSCF among the IMS in IMS, notifies I-CSCF self access technology of current employing simultaneously;
Described step B is specially:
After B1, I-CSCF receive the access technology of this register requirement and the current employing of terminal, the access technology of the current employing of this terminal is sent to HSS, requiring HSS simultaneously is S-CSCF of terminal distribution;
B2, HSS determine the access way that this access technology is affiliated according to the access technology of the current employing of terminal, determine a S-CSCF who supports this access way afterwards, and the address information with this S-CSCF returns to I-CSCF then;
After B3, I-CSCF received the address information of returning, the S-CSCF that points to this address information transmitted register requirement;
After B4, S-CSCF receive this register requirement, return self related service information, and after receiving the response message that HSS returns, self address information is returned to terminal by I-CSCF and P-CSCF to HSS.
The described I-CSCF of step B1 sends to HSS with the access technology of the current employing of terminal and is specially:
I-CSCF sends the user-authorization-request of the parameter that carries the access technology of describing the current employing of terminal to HSS.
The parameter of the access technology of the current employing of described description terminal is: the access network type parameter that the parameter access style is complementary with the Diameter property value.
Compared with prior art, method provided by the present invention is by the S-CSCF of setting in IMS more than one, and each S-CSCF supports a kind of access way; Terminal is notified IMS self access technology of current employing simultaneously when IMS initiates register requirement; After IMS receives register requirement, determine the access way that this access technology is affiliated, further determine the S-CSCF that a support terminal inserts, and with the address information of this S-CSCF notice terminal, after this, terminal just inserts IMS by this S-CSCF, simplified the function of single S-CSCF, avoided the decline of the professional control ability of S-CSCF, the conflict that the terminal of also having avoided adopting different access technologies to insert IMS produces when inserting same S-CSCF, avoided the waste of the interface-free resources that terminal caused because of message response overtime resend message, also reduced the access load of single S-CSCF, thereby improved the efficient of terminal access to IMS when IMS supports plurality of access modes, helped IMS and carry out miscellaneous service.
Description of drawings
The message flow sequential chart that Fig. 1 registers in IMS for UE in the prior art;
Fig. 2 is the flow chart of terminal access to IMS provided by the invention;
The message flow sequential chart of the specific embodiment that Fig. 3 registers in IMS for UE provided by the invention.
Embodiment
Core concept of the present invention is: the S-CSCF more than is set in IMS, and each S-CSCF supports a kind of access way; Terminal is initiated register requirement to IMS, notifies IMS self access technology of current employing simultaneously; After IMS receives register requirement, the corresponding relation of the access technology that comprises with it according to the access technology and the access way of the current employing of terminal, determine the access way that this access technology is affiliated, further determine the S-CSCF that a support terminal inserts, and the address information of this S-CSCF returned to terminal, after this, terminal just can insert IMS by this S-CSCF.
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 2 is the flow chart of terminal access to IMS provided by the invention, and as shown in Figure 2, its concrete steps are as follows:
Step 201: the S-CSCF more than is set, and each S-CSCF supports a kind of access way in IMS.
Access way can be divided into: mobile access way, fixedly access way, WLAN (wireless local area network) access way etc.Wherein, mobile access way comprises access technology: 3GPP-GERAN, 3GPP-UTRAN-FDD, 3GPP-UTRAN-TDD, 3GPP-CDMA2000 etc., fixedly access way comprises access technology: ADSL, ADSL2, ADSL2+, RADSL, SDSL, HDSL, HDSL2, G.SHDSL, VDSL, IDSL etc., the WLAN (wireless local area network) access way comprises access technology: IEEE802.11a, IEEE802.11b etc.
In actual applications, concerning certain S-CSCF that supports a certain access way, the access way that this S-CSCF supports can comprise the above access way and comprise one or more combination in any in the access technology.
Step 202: terminal is initiated register requirement to IMS, notifies IMS self access technology of current employing simultaneously.
After step 203:IMS receives register requirement, the corresponding relation of the access technology that comprises with it according to the access technology and the access way of the current employing of terminal, determine the access way that this access technology is affiliated, thereby determine the S-CSCF that a support terminal inserts, and the address information of this S-CSCF is returned to terminal.
Step 204: after terminal was received the address information of this S-CSCF, the S-CSCF that points to by this address information inserted IMS.
UE is same as the prior art by the flow process that this S-CSCF inserts IMS.
Fig. 3 is the message flow sequential chart of the specific embodiment registered in IMS of UE provided by the invention, and as shown in Figure 3, its concrete steps are as follows:
Step 301:UE initiates register requirement to P-CSCF, and this request message carries: being used to of Access Network information (P-Access-Network-Info) message header described the title of IMS home domain of enrollment status, the UE of access style (Access-Type) field, the UE of the access technology of the current employing of UE.
The Access-Type field of P-Access-Network-Info is Optional Field in the prior art, is mandatory field in the present invention.
After step 302:P-CSCF receives register requirement, the IMS home domain title of the UE that carries according to this login request message, parse the inlet of the IMS home domain of UE: the address of inquiry CSCF (I-CSCF), and to this I-CSCF forwarding register requirement, this register requirement is carried access style field and UE enrollment status.
After step 303:I-CSCF receives register requirement, send UAR message to HSS, this message is carried UE enrollment status and is described access network type (Access-Network-Type) parameter of the access technology of the current employing of UE, wherein, access network type parameter and Diameter property value are to (AVP, Attribute Value Pair) parameter: access style (Access-Type) is complementary.
In UAR message, increase the Access-Network-Type parameter for the present invention's proposition.
Generally, I-CSCF self preserves the HSS address; Do not preserve if, then, obtain the HSS address to SLF according to the SLF address of self preserving.
After step 304:HSS receives UAR message, determine that UE is in the IMS service of self having contracted, the access technology of the current employing of UE of carrying according to this UAR message and the corresponding relation of the access technology that access way comprises with it then, determine the access way that this access technology is affiliated, a thereby selected S-CSCF who supports that UE inserts, return UAA message to I-CSCF then, this UAA message carries UE enrollment status and HSS is the address information of the selected S-CSCF of UE.
Here, HSS self preserves the inclusion relation of each access way access technology corresponding with it, and the corresponding relation of the access way of each S-CSCF and its support.
After step 305:I-CSCF receives UAA message, the address information of the S-CSCF that carries according to this UAA message, the S-CSCF that the S-CSCF address information of carrying to this UAA message is pointed to transmits register requirement, and this login request message is carried UE enrollment status.
After step 306:S-CSCF receives register requirement, send SAR message to HSS, this SAR message is carried the related service information of UE enrollment status and S-CSCF.
After step 307:HSS receives SAR message, return SAA message to S-CSCF, this SAA message is carried UE enrollment status, the related service information of the S-CSCF that the SAR of HSS preservation simultaneously message is carried.
After step 308～310:S-CSCF receives SAA message, 200 response messages that will carry UE enrollment status and S-CSCF address information by I-CSCF are transmitted to P-CSCF, after P-CSCF receives 200 response messages, send 200 response messages that carry the S-CSCF address information to UE.
After UE receives 200 response messages, preserve the address information of the S-CSCF that this 200 response message carries, after this just can insert IMS by the S-CSCF that the S-CSCF address information that this 200 response message carries is pointed to.
The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of method that inserts IP Multimedia System IMS is characterized in that, the service call conversation control function CSCF more than is set in IMS, and each serving CSCF supports a kind of access way, and this method comprises:
A, terminal are initiated register requirement to IMS, notify IMS self access technology of current employing simultaneously;
After B, IMS receive register requirement, determine the affiliated access way of access technology of the current employing of described terminal, further determine the serving CSCF that a support terminal inserts, and the address information of this serving CSCF is returned to terminal;
C, terminal are received the address information of this serving CSCF, after this insert IMS by this serving CSCF.
2, the method for claim 1 is characterized in that, the access way of described serving CSCF support is: mobile access way or fixedly access way or WLAN (wireless local area network) access way.
3, method as claimed in claim 2, it is characterized in that described mobile access way comprises: third generation partner plans a kind of or combination in any in 3GPP-global system for mobile communications enhanced wireless Access Network GERAN, 3GPP-universal mobile telecommunications system land radio access web UTRAN-mode of frequency division duplexing FDD, 3GPP-UTRAN-TDD mode TDD, four kinds of access technologies of 3GPP-Wideband Code Division Multiple Access (WCDMA) CDMA2000.
4, method as claimed in claim 2, it is characterized in that described fixedly access way comprises: ADSL (Asymmetric Digital Subscriber Line) ADSL, ADSL2, ADSL2+, rate adaptation DSL, symmetrical DSL, high speed DSL, HDSL2, single to a kind of or combination in any in high speed DSL, ultrahigh speed DSL, ten kinds of access technologies of integrated services digital network DSL.
5, method as claimed in claim 2 is characterized in that, described WLAN (wireless local area network) access way comprises: a kind of or combination in two kinds of access technologies of the IEEE802.11a of IEEE, IEEE802.11b.
6, the method for claim 1, it is characterized in that, described method further comprises: the home subscriber server HSS among the IMS preserves the corresponding relation of the access way of each serving CSCF and its support, preserves the corresponding relation of the access technology that each access way comprises with it simultaneously;
The described IMS of step B determines that the serving CSCF that a support terminal inserts is specially:
HSS is in the corresponding relation of the access technology that each access way of self preserving comprises with it, find the affiliated access way of access technology of the current employing of terminal, the corresponding relation of each serving CSCF of preserving according to self and the access way of its support then, the serving CSCF of the access way that a selected access technology of supporting the current employing of this terminal is affiliated.
7, the method for claim 1 is characterized in that, the access technology of the current employing of the described terminal notice IMS self of steps A is specially:
Terminal is carried at the access technology of self current employing in the access style field of Access Network informational message head of login request message and notifies IMS.
8, the method for claim 1 is characterized in that, described steps A is specially:
Terminal is initiated register requirement by the inquiry CSCF of the proxy CSCF among the IMS in IMS, simultaneously the access technology of the current employing of notice inquiry CSCF self;
Described step B is specially:
B1, inquiry be after CSCF receives the access technology of this register requirement and the current employing of terminal, and the access technology of the current employing of this terminal is sent to HSS, and requiring HSS simultaneously is serving CSCF of terminal distribution;
B2, HSS determine the access way that this access technology is affiliated according to the access technology of the current employing of terminal, determine a serving CSCF of supporting this access way afterwards, and the address information with this serving CSCF returns to inquiry CSCF then;
After B3, inquiry CSCF receive the address information of returning, transmit register requirement to the serving CSCF that this address information is pointed to;
After B4, serving CSCF are received this register requirement, return self related service information, and after receiving the response message that HSS returns, self address information is returned to terminal by inquiry CSCF and proxy CSCF to HSS.
9, method as claimed in claim 8 is characterized in that, the described inquiry of step B1 CSCF sends to HSS with the access technology of the current employing of terminal and is specially:
Inquiry CSCF sends the user-authorization-request of the parameter that carries the access technology of describing the current employing of terminal to HSS.
10, method as claimed in claim 9 is characterized in that, the parameter of the access technology of the current employing of described description terminal is: the access network type parameter that the parameter access style is complementary with the Diameter property value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510090802.7A CN100493011C (en) | 2005-08-16 | 2005-08-16 | Method for connecting to IP multimedia subsystem |
| PCT/CN2006/002076 WO2007019799A1 (en) | 2005-08-16 | 2006-08-16 | Method and system for accessing an ims and the ims |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510090802.7A CN100493011C (en) | 2005-08-16 | 2005-08-16 | Method for connecting to IP multimedia subsystem |
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| Publication Number | Publication Date |
|---|---|
| CN1917457A true CN1917457A (en) | 2007-02-21 |
| CN100493011C CN100493011C (en) | 2009-05-27 |
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| CN200510090802.7A Expired - Fee Related CN100493011C (en) | 2005-08-16 | 2005-08-16 | Method for connecting to IP multimedia subsystem |
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| WO (1) | WO2007019799A1 (en) |
Cited By (11)
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| WO2009024053A1 (en) * | 2007-08-17 | 2009-02-26 | Huawei Technologies Co., Ltd. | Method and system for transferring operation discovering message and function entity for operation discovering |
| WO2009097775A1 (en) * | 2008-02-04 | 2009-08-13 | Huawei Technologies Co., Ltd. | A method and system for processing the bearer under the isr mechanism |
| CN101409861B (en) * | 2007-10-08 | 2010-09-22 | 华为技术有限公司 | Characteristic and addressing subsystem, user enroll method, calling method and roaming method |
| CN101217480B (en) * | 2008-01-09 | 2011-05-11 | 中兴通讯股份有限公司 | A third party registration method of multi-terminal user in the subsystem of IP multimedia |
| CN101291320B (en) * | 2007-04-18 | 2011-07-13 | 中兴通讯股份有限公司 | Implementing method of IP multimedia subsystem centralized service re-registration |
| CN102387144A (en) * | 2011-10-21 | 2012-03-21 | 华为技术有限公司 | Configuration method and network equipment for internet access protocol |
| CN104052744A (en) * | 2014-06-16 | 2014-09-17 | 中国联合网络通信集团有限公司 | Service triggering method and device |
| CN104639509A (en) * | 2013-11-14 | 2015-05-20 | ***通信集团公司 | Service processing method and device |
| CN110971583A (en) * | 2018-09-30 | 2020-04-07 | 华为技术有限公司 | Communication method, device and system |
| CN112087780A (en) * | 2019-06-14 | 2020-12-15 | 中国电信股份有限公司 | IMS service providing method, system and network side service providing system |
| CN114172866A (en) * | 2021-11-30 | 2022-03-11 | 西安中诺通讯有限公司 | Method, device and terminal for bearing and managing terminal positioning service based on IMS network |
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| US6278874B1 (en) * | 1998-12-31 | 2001-08-21 | Nortel Networks Limited | Wireless communication system in which a termination access type is identified to a serving mobile switching center |
| WO2002045449A1 (en) * | 2000-11-28 | 2002-06-06 | Nokia Corporation | System and method for authentication of a roaming subscriber |
| DE10116547A1 (en) * | 2001-04-03 | 2002-10-10 | Nokia Corp | Registration of a terminal in a data network |
| CN1239009C (en) * | 2002-08-07 | 2006-01-25 | 华为技术有限公司 | Quick abstract identification method for IP multimedia domain user's call |
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- 2005-08-16 CN CN200510090802.7A patent/CN100493011C/en not_active Expired - Fee Related
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN100493011C (en) | 2009-05-27 |
| WO2007019799A1 (en) | 2007-02-22 |
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