CN1780482A - Method for ensuring information conformity after functional module re-start by calling session control - Google Patents
Method for ensuring information conformity after functional module re-start by calling session control Download PDFInfo
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- CN1780482A CN1780482A CN 200410097243 CN200410097243A CN1780482A CN 1780482 A CN1780482 A CN 1780482A CN 200410097243 CN200410097243 CN 200410097243 CN 200410097243 A CN200410097243 A CN 200410097243A CN 1780482 A CN1780482 A CN 1780482A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/30—Network data restoration; Network data reliability; Network data fault tolerance
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Abstract
The invention in use for IP multimedia subsystem includes following steps: the call and conversation control module uploads the routing message of user terminal to the home subscribe server (HSS); when failure happens, the reset event is sent to the HSS that enquiries the user terminal information saved in the call and conversation control module, and returns the routing message and describing file of user terminal to the call and conversation module; HSS informs all users serviced by the call and conversation control module in the HSS above to execute log-off procedure, and informs all application servers relating to the users to delete the built connections.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular in the IP Multimedia System (IMS, IPMultimedia Subsystem) a kind of method of ensuring information conformity after functional module re-start by calling session control.
Background technology
Development along with broadband network, mobile communication will not only be confined to traditional Speech Communication, multimedia service in conjunction with multiple medium types such as audio frequency, video, picture and texts will be carried out gradually, by with present combining of data services such as business (presence), short message, webpage (WEB) are browsed, locating information, propelling movement business (PUSH), file-sharing, can satisfy the multiple demand of user terminal.As:
Messaging service: instant message and chatroom, multimedia short message;
Video traffic: amusement, multimedia messages, daily interchange;
Ecommerce: catalogue, search engine, shopping cart, order management, payment;
Recreation: solitaire game, group's recreation;
Positioning service: missing, guide, warning;
Personal assistant: address book, schedule, bookmark management, file storage, event notification, Email;
Under the promotion of multiple application, standardized partnership projects (the 3GPP of 3G (Third Generation) Moblie, 3rdGeneration Partnership Project) and the standardized partnership projects 2 (3GPP2 of 3G (Third Generation) Moblie, 3rd Generation Partnership Project 2) etc. normal structure has all successively been released IP-based IP multimedia subsystem, IMS framework, purpose is to use a kind of structure of standardized opening to realize diversified multimedia application in the mobile network, offers more selection of user terminal and abundanter impression.
In 3GPP Release 5 (R5) stage, the IMS that introduces, be superimposed upon on the packet field network, by CSCF module (CSCF, Call Session Control Function), MGCF module (MGCF, Media Gateway Control Function), media resource function (MRF, MultimediaResource Function) and home signature user server (HSS, Home Subscriber Server) etc. functional entity is formed, wherein CSCF can be divided into serving CSCF (S-CSCF again, Serving CSCF), proxy CSCF (P-CSCF, Proxy CSCF) and inquiry CSCF (I-CSCF, Interrogating CSCF) three logic entities, S-CSCF is the service switching center of IMS, carries out session control, peace preservation association's speech phase, be in charge of user terminal information, produce charge information etc.; P-CSCF is the access point that end user terminal inserts IMS, finishes the user terminal registration, is responsible for QoS control and safety management etc., and I-CSCF is responsible for the intercommunication between the IMS territory, and network topology and configuration are externally hidden in the distribution of management S-CSCF, produce metering data etc.The MGCF control gateway realizes the intercommunication of IMS network and other network, and MRF provides media resource, as the folding and unfolding sound, and encoding and decoding and multimedia conferencing bridge.HSS is the user terminal data storehouse, the subscription data of storage IMS user terminal and configuration information etc.
On the packet network that the IMS network of 3GPP definition also can be applied to define among the 3GPP2, provide the intercommunication with the polytype network, realize and the independence of user terminal use terminal type.Therefore do not limit IMS here and only be applied in relevant network of 3GPP and the application, the access network of other types and the business of bearer network also can realize with the IMS framework with using.
Session initiation Protocol (SIP, Session Initiation Protocol) is the IP phone signaling protocol that is proposed by Interne engineering duty group (IETF).As what its name implied, SIP is used for initiation session, it can control the foundation and the termination of the Multimedia session of a plurality of participants' participation, and can dynamically adjust and revise session attribute, as session bandwidth require, the code/decode format of the medium type (voice, video and text etc.) of transmission, medium, to the support of multicast and clean culture etc.In IMS, use the signaling control protocol of Session Initiation Protocol as IP multimedia session.
AAA, authentication authorization and accounting (Authentication), mandate (Authorization) and charge (Accounting) they are the bases that Virtual network operator carries out network operation and management always, along with the development of AAA, new frame structure Diameter technology moulding.
Diameter family comprises basic agreement (Diameter Base Protocol) and various application protocol.Wherein basic agreement provides the Minimum requirements as an aaa protocol, is the function that the Diameter network node all must be realized, comprises the real-time Transmission of the reception of negotiation, Diameter message of ability between node and forwarding, charge information etc.Application protocol then makes full use of the message transfer mechanism that basic agreement provides, the function of standard interdependent node with and distinctive message content, realize the AAA of applied business.
In IMS, just be to use Diameter to transmit relevant information on the Cx interface between HSS and I-CSCF and HSS and the S-CSCF.
HSS is the most important database of each user terminal, in store all with signatory relevant information, be used to support each network entity to calling out and the processing of session, specifically comprise: the sign of user terminal, numbering and addressing information; The security information of user terminal; The positional information of user terminal and the descriptor of user terminal (user profile information) etc.A home network can have one or more HSS, depends on the quantity of mobile contracted user's terminal, the capacity of the network equipment and concrete networking situation.Between a plurality of entities in HSS and the network interface is arranged.
In the existing IMS network, do not consider, after restarting, how to guarantee that other nodes of communicating by letter with CSCF can know that this secondary device restarts such as CSCF when the IMS network node.If CSCF equipment thoroughly breaks down, the register update mechanism in the existing IMS network can be after a registration period finishes, and does not re-register replying of message and current sessions is discharged because receive; Within a registration period, can be because any one message that sends to CSCF is not received be replied and cause the release of current sessions, therefore, this fault does not belong to the problem to be solved in the present invention.The information inconsistency problem that focuses on restarting very soon after solving the CSCF node failure and cause of the present invention, and the fault CSCF equipment that takes place here can't predict, otherwise the session that CSCF can will be referred to earlier before fault takes place discharges.
Because there is not a kind of mechanism to guarantee that CSCF restarts this incident and can be known by other and the mutual node of CSCF, therefore, after CSCF is restarted, that originally preserves has all lost with the relevant information of business execution, but other nodes still send message as usual to this CSCF, the mistake expected at this time will take place much to be difficult to: perhaps this CSCF can handle the message of newly receiving as article one message of receiving from this node, perhaps this CSCF can not be familiar with the message of newly receiving and it is abandoned, perhaps CSCF can handle or the like according to default mode, and these handle the charging that all can give user terminal, safety and service implementation bring a lot of problems, therefore can't reach the requirement of carrier class network operation.
Summary of the invention
The objective of the invention is to propose a kind of method of ensuring information conformity after functional module re-start by calling session control, introducing a kind of mechanism in the existing IMS network realizes giving other mutual nodes with the event notice of restarting of CSCF, and then guarantee consistency on messaging between each interactive device, the variety of issue that also carries out business after having avoided CSCF to restart and cause, make the IMS network more meet the reliability requirement of carrier class network, be more suitable for commercialization, for this reason, the present invention by the following technical solutions:
A kind of method of ensuring information conformity after functional module re-start by calling session control is applied on the IP Multimedia System, it is characterized in that:
Call session control function module is uploaded the routing iinformation of user terminal to home signature user server and is preserved in the user terminal registration process, when call session control function module breaking down restart after, carry out following processing:;
A, call session control function module will be restarted incident and be sent to home signature user server by Indication message;
After b, home signature user server are received described Indication message, the own local user terminal information of preserving by described call session control function module service of inquiry returns to described call session control function module with the routing iinformation and the user terminal description document of described user terminal;
C, notify all to be registered on the described home signature user server to carry out log off procedure, notify being connected of all application servers cancellation foundation relevant simultaneously with these user terminals by the user terminal of described call session control function module service.
This method also comprises step: d, indicate whether that in informing user terminal is carried out the message of log off procedure the described user terminal of needs initiates to register again.
The routing iinformation of user terminal is uploaded to home signature user server and can be realized by increasing a new information element (IE, Information Element) at call session control function module in the message that home signature user server sends.
Among the step a, described home signature user server is call session control function module and home signature user server when carrying out information interaction, and recording address information also is kept at home signature user server in the nonvolatile storage.
Among the step a, described home signature user server is that call session control function module is configured in this locality with address information, and is kept at the home signature user server in the nonvolatile storage.
Can further include among the step a:
Call session control function module break down restart after, send the Indication message of restarting incident to all home signature user servers, whether finish subsequent step by the information decision whether home signature user server has preserved described call session control function module according to this locality.
Step c further may further comprise the steps:
C1, home signature user server send logout message to call session control function module, wherein carry user terminal identification information, nullify reason;
C2, described call session control function module send to professional controlling platform according to the filtering rule in the user terminal description document with logout message, carry out professional control procedure;
The routing iinformation that c3, basis obtain from home signature user server, described call session control function module informing user terminal is nullified;
C4, described call session control function module return nullifies response message to described home signature user server;
What c5, application servers cancellation of notifying all to be correlated with these user terminals were set up is connected.
Comprise also among the step c3 that described call session control function module will nullify reason and send to user terminal.
Comprise also among the step c3 that described user terminal is to described call session control function module echo reply affirmation log off procedure.
Comprise also among the step c5 that described application server connects delete procedure to described call session control function module echo reply affirmation.
Adopted the present invention, the routing iinformation of user terminal is kept on the HSS when registering by CSCF, when CSCF break down restart after, at first send the notice of restarting incident to HSS, after HSS obtains indicating relevant user terminal routing iinformation and user terminal description document are returned to CSCF, initiate log off procedure then, user terminal routing iinformation that the CSCF basis obtains and user terminal description document are respectively to user terminal (UE, User Equipment) and application server (AS, Application Server) notice log-off message, thereby guaranteed the consistency of information on each IMS node, avoided having improved the reliability and the fail safe of IMS network operation because CSCF equipment is restarted a series of problems that cause.
Description of drawings
Fig. 1 is the flow chart that CSCF of the present invention is restarted back maintenance information unanimity;
Fig. 2 is the flow chart that S-CSCF is restarted back maintenance information unanimity in the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
In the technical scheme that the present invention proposes, CSCF is kept at the routing iinformation of user terminal on the HSS when registration, when the CSCF node break down restart after, at first send message to HSS, incident has taken place to restart in the CSCF that indicates in the notice HSS message; HSS receives after this indication, the own local user terminal information of preserving of inquiry about this CSCF service, relevant user terminal routing iinformation and user terminal description document are returned to CSCF, notify all to be registered among the HSS then and carry out log off procedure, thereby the information on each node of IMS network that makes has kept unanimity by the user terminal of this CSCF service.In the informing user terminal log off procedure, can in message, indicate whether to initiate again registration.In addition, CSCF is restarted the back and which HSS transmission to be restarted event notice in order to know fault, can write down the address information of this HSS after CSCF and each HSS are mutual, be kept in the nonvolatile storage, these address informations can not lost after guaranteeing to restart; CSCF also can be configured in this locality with the address information of HSS, is kept in the nonvolatile storage.Can also simply just send to all HSS after restarting at every turn and restart event notice, the information of whether having preserved this CSCF according to this locality by HSS decides subsequent treatment.
As shown in Figure 1, after CSCF is restarted, at first send Cx-Notify message and incident has taken place to restart to the CSCF equipment of indicating in the HSS notice HSS message;
HSS receives after this Indication message, searches the information about this CSCF, if current not by the user terminal information of this CSCF service, then HSS only returns Cx-Notify-Resp message as affirmation; If the current user terminal information that has by this CSCF service, then HSS carries the description document information (userprofile) and the routing iinformation of these user terminals in the affirmation message of returning;
If current this CSCF has the user terminal identification of service to exist, HSS sends Cx-Deregister message to CSCF so, wherein carries user terminal identification information, nullifies reason etc.;
CSCF sends to professional controlling platform according to the filtering rule in the user terminal description document with relevant log-off message, carries out relevant professional control procedure;
According to the routing iinformation that from HSS, obtains, the current log off procedure of CSCF notice UE, passable, will nullify reason simultaneously and be transmitted to UE.If the out of touch words of UE and network, UE possibly can't receive the notice of this log off procedure;
If possible, the UE echo reply is confirmed current log off procedure, if UE breaks down or has roamed out the scope that CSCF covers, and so can't echo reply message;
CSCF returns Cx-Deregister-Resp message and gives HSS, does not need the response message of waiting for that UE returns.
Wherein, the routing iinformation that HSS returns to CSCF needs CSCF to upload the preservation to HSS in the user terminal registration process, realizes by increase a new IE in Cx-Put/Cx-Put-Resp message.When UE when CSCF sends registration message, can carry some routing iinformations, such as the Request-URI head, the Route head, Contact head etc., CSCF is kept among the HSS carry these routing iinformations in the Cx-Put message of HSS request user terminal description document, after S-CSCF is restarted, just can carry out log off procedure according to the routing iinformation notice UE of these preservations.
UE can determine whether initiate to re-register according to the indication of the logout message of receiving.
Be that example specifies below with S-CSCF, P-CSCF and I-CSCF etc. are suitable for the solution of the present invention too, and concrete grammar is identical therewith.
In the IMS network, CSCF can be divided into I-CSCF, several logic entities such as S-CSCF and P-CSCF are realized, wherein P-CSCF can be positioned at home network or visited network, and do not realize Cx interface between the HSS, Cx interface between I-CSCF and the HSS is used to inquire about or selects the current S-CSCF of subscriber terminal service that is, and S-CSCF is as the platform of carrying out service logic control in the IMS network, and the interface between the HSS is used to register/notice when nullifying, download/the renewal of user terminal description document, and authentication, be a most important equipment, after this device fails is restarted, can use the consistency that the present invention comes guarantee information.
After S-CSCF is restarted, at first send Cx-Notify message and incident has taken place to restart to the S-CSCF equipment of indicating in the HSS notice HSS message;
HSS receives after this Indication message, searches the information about this S-CSCF, if current not by the user terminal information of this S-CSCF service, then HSS only returns Cx-Notify-Resp message as affirmation; If the current user terminal information that has by this S-CSCF service, then HSS carries the description document information (user profile) and the routing iinformation of these user terminals in the affirmation message of returning;
If current this S-CSCF has the user terminal identification of service to exist, HSS sends Cx-Deregister message to S-CSCF so, wherein carries user terminal identification information, nullifies reason etc.;
S-CSCF sends to professional controlling platform according to the filtering rule in the user terminal description document with relevant log-off message, carries out relevant professional control procedure;
According to the routing iinformation that obtains from HSS, S-CSCF notice P-CSCF carries out log off procedure, if know the cancellation reason, also will be included in this logout message;
The current log off procedure of P-CSCF notice UE, passable, will nullify reason simultaneously and be transmitted to UE.If the out of touch words of UE and network, UE possibly can't receive the notice of this log off procedure;
The P-CSCF echo reply is given S-CSCF, upgrades internal database simultaneously, the login state of deletion related user terminal;
If possible, the UE echo reply is confirmed current log off procedure to P-CSCF, if UE breaks down or has roamed out the scope that P-CSCF covers, and so can't echo reply message;
S-CSCF returns Cx-Deregister-Resp message and gives HSS, does not need to wait for UE echo reply message.
UE can determine whether initiate to re-register according to the indication of the logout message of receiving.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of method of ensuring information conformity after functional module re-start by calling session control is applied on the IP Multimedia System, it is characterized in that:
Call session control function module is uploaded the routing iinformation of user terminal to home signature user server and is preserved in the user terminal registration process, when call session control function module breaking down restart after, carry out following processing:
A, call session control function module will be restarted incident and be sent to home signature user server by Indication message;
After b, home signature user server are received described Indication message, the own local user terminal information of preserving by described call session control function module service of inquiry returns to described call session control function module with the routing iinformation and the user terminal description document of described user terminal;
C, notify all to be registered on the described home signature user server to carry out log off procedure, notify being connected of all application servers cancellation foundation relevant simultaneously with these user terminals by the user terminal of described call session control function module service.
2, the method for claim 1 is characterized in that behind step c further comprising the steps of:
D, in carrying out the message of log off procedure, informing user terminal needs to indicate whether described user terminal initiate registration again.
3, the method for claim 1 is characterized in that the routing iinformation of user terminal is uploaded to home signature user server and can be realized by increasing new information unit at call session control function module in the message that home signature user server sends.
4, the method for claim 1, it is characterized in that among the described step a, described home signature user server, be call session control function module and home signature user server when carrying out information interaction, recording address information also is kept at home signature user server in the nonvolatile storage.
5, the method for claim 1 is characterized in that among the described step a, and described home signature user server is that call session control function module is configured in this locality with address information, and is kept at the home signature user server in the nonvolatile storage.
6, the method for claim 1 is characterized in that further comprising among the described step a:
Call session control function module break down restart after, send the Indication message of restarting incident to all home signature user servers, whether finish subsequent step by the information decision whether home signature user server has preserved described call session control function module according to this locality.
7, the method for claim 1 is characterized in that described step c further may further comprise the steps:
C1, home signature user server send logout message to call session control function module, wherein carry user terminal identification information, nullify reason;
C2, described call session control function module send to professional controlling platform according to the filtering rule in the user terminal description document with logout message, carry out professional control procedure;
The routing iinformation that c3, basis obtain from home signature user server, described call session control function module informing user terminal is nullified;
C4, described call session control function module return nullifies response message to described home signature user server;
What c5, application servers cancellation of notifying all to be correlated with these user terminals were set up is connected.
8, method as claimed in claim 7 is characterized in that also comprising among the described step c3 that described call session control function module will nullify reason and send to user terminal.
9, method as claimed in claim 7 is characterized in that also comprising among the described step c3 that described user terminal is to described call session control function module echo reply affirmation log off procedure.
10, method as claimed in claim 7 is characterized in that also comprising among the described step c5 that described application server connects delete procedure to described call session control function module echo reply affirmation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100972438A CN100388864C (en) | 2004-11-18 | 2004-11-18 | Method for ensuring information conformity after functional module re-start by calling session control |
| PCT/CN2005/001952 WO2006053502A1 (en) | 2004-11-18 | 2005-11-18 | A method for ensuring the information consistency between the network nodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100972438A CN100388864C (en) | 2004-11-18 | 2004-11-18 | Method for ensuring information conformity after functional module re-start by calling session control |
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| Publication Number | Publication Date |
|---|---|
| CN1780482A true CN1780482A (en) | 2006-05-31 |
| CN100388864C CN100388864C (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100972438A Expired - Fee Related CN100388864C (en) | 2004-11-18 | 2004-11-18 | Method for ensuring information conformity after functional module re-start by calling session control |
Country Status (2)
| Country | Link |
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| CN (1) | CN100388864C (en) |
| WO (1) | WO2006053502A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009036629A1 (en) * | 2007-09-17 | 2009-03-26 | Zte Corporation | Processing method after core network element restarting or recovering form failure |
| WO2009152779A1 (en) * | 2008-06-20 | 2009-12-23 | 大唐移动通信设备有限公司 | Method, apparatus and system for enabling to release pdn connections |
| CN101123480B (en) * | 2007-09-06 | 2010-06-09 | 中兴通讯股份有限公司 | A method for realizing data consistency of home user server |
| CN102075545A (en) * | 2011-02-18 | 2011-05-25 | 杭州华三通信技术有限公司 | Registration instruction method and registration method for client and equipment thereof |
| CN101170553B (en) * | 2006-10-24 | 2011-07-20 | 华为技术有限公司 | Method and device for realizing Internet protocol multi-media sub-system disaster tolerance |
| CN101072326B (en) * | 2007-06-20 | 2011-12-21 | 华为技术有限公司 | method, system and device for accessing service of non-attribution contracted IPIV service provider |
| CN101090416B (en) * | 2006-09-29 | 2012-02-29 | 中兴通讯股份有限公司 | Basic service addition service implementing system and method |
| CN102204222B (en) * | 2008-10-31 | 2014-04-09 | 爱立信电话股份有限公司 | IMS restoration procedures for multiple contacts |
| CN101599921B (en) * | 2009-06-18 | 2014-12-17 | 腾讯科技（深圳）有限公司 | Enterprise instant communication system and file transfer method thereof |
| CN101467471B (en) * | 2006-06-09 | 2016-09-28 | 西门子公司 | The method for multiple registration of multimodal communication terminal device |
| CN108495306A (en) * | 2011-08-10 | 2018-09-04 | 爱立信(中国)通信有限公司 | HSS fault recoveries for non-3 GPP access |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188714A (en) * | 2011-12-29 | 2013-07-03 | 中兴通讯股份有限公司 | Real-time data acquisition method, acquisition system and acquisition network element |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002032170A1 (en) * | 2000-10-09 | 2002-04-18 | Nokia Corporation | Address de-registration in ip multimedia networks |
| US7769374B2 (en) * | 2001-03-12 | 2010-08-03 | Son Phan-Anh | Recovery techniques in mobile networks |
| KR100447412B1 (en) * | 2001-12-26 | 2004-09-04 | 삼성전자주식회사 | The Apparatus and Method for the Mobility Management of IP Multimedia Service Subscriber |
-
2004
- 2004-11-18 CN CNB2004100972438A patent/CN100388864C/en not_active Expired - Fee Related
-
2005
- 2005-11-18 WO PCT/CN2005/001952 patent/WO2006053502A1/en active Application Filing
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101467471B (en) * | 2006-06-09 | 2016-09-28 | 西门子公司 | The method for multiple registration of multimodal communication terminal device |
| CN101090416B (en) * | 2006-09-29 | 2012-02-29 | 中兴通讯股份有限公司 | Basic service addition service implementing system and method |
| US8069365B2 (en) | 2006-10-24 | 2011-11-29 | Huawei Technologies Co., Ltd. | Method and device for realizing IP multimedia subsystem disaster tolerance |
| US8719617B2 (en) | 2006-10-24 | 2014-05-06 | Huawei Technologies Co., Ltd. | Method and device for realizing IP multimedia subsystem disaster tolerance |
| CN101170553B (en) * | 2006-10-24 | 2011-07-20 | 华为技术有限公司 | Method and device for realizing Internet protocol multi-media sub-system disaster tolerance |
| CN101072326B (en) * | 2007-06-20 | 2011-12-21 | 华为技术有限公司 | method, system and device for accessing service of non-attribution contracted IPIV service provider |
| CN101123480B (en) * | 2007-09-06 | 2010-06-09 | 中兴通讯股份有限公司 | A method for realizing data consistency of home user server |
| WO2009036629A1 (en) * | 2007-09-17 | 2009-03-26 | Zte Corporation | Processing method after core network element restarting or recovering form failure |
| WO2009152779A1 (en) * | 2008-06-20 | 2009-12-23 | 大唐移动通信设备有限公司 | Method, apparatus and system for enabling to release pdn connections |
| CN102204222B (en) * | 2008-10-31 | 2014-04-09 | 爱立信电话股份有限公司 | IMS restoration procedures for multiple contacts |
| CN101599921B (en) * | 2009-06-18 | 2014-12-17 | 腾讯科技（深圳）有限公司 | Enterprise instant communication system and file transfer method thereof |
| CN102075545A (en) * | 2011-02-18 | 2011-05-25 | 杭州华三通信技术有限公司 | Registration instruction method and registration method for client and equipment thereof |
| CN108495306A (en) * | 2011-08-10 | 2018-09-04 | 爱立信(中国)通信有限公司 | HSS fault recoveries for non-3 GPP access |
| CN108495306B (en) * | 2011-08-10 | 2021-03-23 | 爱立信(中国)通信有限公司 | HSS failure recovery for non-3 GPP access |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100388864C (en) | 2008-05-14 |
| WO2006053502A1 (en) | 2006-05-26 |
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