CN105916115A - Method for implementing roaming restriction to VoWiFi (Vocie Over WiFi) voice service - Google Patents

Method for implementing roaming restriction to VoWiFi (Vocie Over WiFi) voice service Download PDF

Info

Publication number
CN105916115A
CN105916115A CN201610413860.7A CN201610413860A CN105916115A CN 105916115 A CN105916115 A CN 105916115A CN 201610413860 A CN201610413860 A CN 201610413860A CN 105916115 A CN105916115 A CN 105916115A
Authority
CN
China
Prior art keywords
user
ims
cscf
network
roaming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610413860.7A
Other languages
Chinese (zh)
Other versions
CN105916115B (en
Inventor
刘艳
张昀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Post and Telecommunication University
Nanjing University of Posts and Telecommunications
Original Assignee
Nanjing Post and Telecommunication University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Post and Telecommunication University filed Critical Nanjing Post and Telecommunication University
Priority to CN201610413860.7A priority Critical patent/CN105916115B/en
Publication of CN105916115A publication Critical patent/CN105916115A/en
Application granted granted Critical
Publication of CN105916115B publication Critical patent/CN105916115B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/025Services making use of location information using location based information parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/02Access restriction performed under specific conditions
    • H04W48/04Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method for implementing roaming restriction to a VoWiFi (Vocie Over WiFi) voice service. According to the method, when a user registers to an IMS (IP Multimedia System) network by a WLAN (Wireless Local Area Network) access network, the user can be independently and flexibly controlled whether to use the VoWiFi service according to the position or type of the access network where the user is positioned, thereby implementing roaming restriction to the VoWiFi (Vocie Over WiFi) service of the user. Furthermore, a control opportunity of the method occurs in a stage that the user initially registers to the IMS network, subsequent interaction of a great quantity of invalid signals is avoided, a network signaling load can be effectively reduced, and the method has a high construction value.

Description

A kind of method realizing VoWiFi speech business roaming restriction
Technical field
The invention belongs to moving communicating field, be specifically related to a kind of realize VoWiFi speech business roaming limit Method.
Background technology
VoWiFi (Vocie Over WiFi, speech business based on WiFi) refers to that user passes through WiFi net Network, uses non-3 GPP network defined in 3GPP standard criterion to access standard, with credit WLAN or non-award Letter WLAN access module is linked into EPC network (Evolved Packet Core, the packet of evolution of operator Core net), after EPC network authentication authenticates successfully, the message such as registration/call request are routed to IMS network, Realize IMS (IP Multimedia System, the IP multimedia system) industry such as voice, note, supplementary service Business, framework sees accompanying drawing 1.
VoWiFi relates to the EPC network element in 4G mobile communication system system and IMS network element, including HSS (Home Subscriber Server, home subscriber server), SGW (Serving GateWay, gateway), PGW (PDN GateWay, PDN Gateway), ePDG (Evolved Packet Data Gataway, evolution Packet data gateway), TWAG (Trusted WLAN Access Gataway, the WLAN of credit access gateway), PCRF (Policy and Charging Rule Function, policy charging rule function), CSCF (Call Service Control Function, call business control function), P-CSCF (Proxy-CSCF, agency Call business control function), I-CSCF (Interrogating-CSCF, query call service control function), S-CSCF (Servicing-CSCF, service call service control function), SCC-AS (Service Call Control Application Server, call business control application server), SBC (Session Border Control, session-orient E-Service), HSS (Home Subscriber Server, home subscriber server), IMS-HSS (IMS-HSS, the home subscriber server of IMS network), WLAN AN (WLAN Access Network, WLAN access network), UE (User Equipment, subscriber equipment i.e. terminal) etc..
First, user is linked in EPC network by the WLAN of credit or non-credit, in EPC network After attachment has been passed through in certification, user just can be through PGW access Internet and carry out other PS and be correlated with industry Business, then user is in order to use voice based on IMS or short breath business, needs to connect via SBC/P-CSCF Enter to IMS network, by IMS network control realization user voice based on grouped data or short message service.? During this, the WLAN access network of credit or non-credit is the bearer network of IMS network, the business of user Logic has been controlled by IMS network.
During actual deployment uses, there is following VoWiFi business scenario cannot be by existing technology or mark Quasi-solution:
The first scene: after user is linked into IMS network, operator need control user can not use based on The VoWiFi business (such as voice or note) of certain position, but allow user to use on the WLAN of this position Net (such as surfing etc.);Or
The second scene: after user is linked into IMS network, operator needs to control user and can not use VoWiFi business, but VoLTE (Voice Over LTE, voice based on LTE) business can be used, also Not affecting user uses WLAN to surf the Net.
The first scene requirement IMS network can be based on position control user when user carries out VoWiFi business Whether have permission this business of use, but do not affect the data services such as user's online;The second scene requirement IMS net Network is when user carries out speech business, it is possible to wireless according to the type of user access networks, such as WLAN or 4G Nets etc., control whether user has permission this business of use.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of side realizing VoWiFi speech business roaming restriction Method.Described method makes user be attached to EPC core net through WiFi and uses VoWiFi business, IMS net Network can according to user's present Access position and or type, determine whether this user is allowed to use VoWiFi Business.
The present invention solves above-mentioned technical problem, the technical scheme of employing is as follows:
A kind of method realizing VoWiFi speech business roaming restriction, its step is as follows:
Step A: terminal is attached to EPC success by WiFi access network, uses IMS voice or other industry Business;
Terminal is initiated SIP (Session Indicator Protocol, session instruction agreement) registration request and is arrived SBC/P-CSCF, is registered to IMS network;
The registration request that terminal is initiated carries the access network positional information that user is used;Described access network position Confidence ceases, and comprise WLAN accesses sign, the IP address of access point;
Step B:SBC/P-CSCF is after receiving SIP registration request, and what increase user was used in the message connects Network types information, then forwards the message to I-CSCF;
Described access network type information comprises WLAN access network type;
Step C:I-CSCF carries user place access network positional information and access network type information, to IMS-HSS initiates user-authorization-request, and the login state of inquiry user selection service the S-CSCF of user;
Step D:IMS-HSS, according to local Roaming control strategy, is netted position according to the visit of user place and or connects Network types, decides whether that carrying out roaming limits;
If IMS-HSS judges to allow user to use IMS network, and have selected offer service for user S-CSCF or related information, then return successful user-authorization-answer message to I-CSCF, then I-CSCF Continue to forward SIP registration request message to corresponding S-CSCF, S-CSCF controlled follow-up certification note After Ce, terminate VoWiFi speech business roaming limit procedure;
If IMS-HSS judges not allow user to use IMS network, then return failed user-authorization-answer and disappear Breath arrives I-CSCF;
IMS-HSS this locality Roaming control strategy mentioned above, comprises local roaming collocation method and local access Control method;
Step E:I-CSCF returns failed registration and is responsive to SBC/P-CSCF;
Step F:SBC/P-CSCF returns registration failure and is responsive to terminal, endpoint registration failure, it is impossible to currently IMS business is used in accompanying carrying.
Further, the local roaming collocation method described in step D by any one in following two method or A combination of both is constituted, particularly as follows:
1) position of access network when location-based method: IMS-HSS accesses based on WLAN or 4G wireless network Confidence ceases, it is allowed to or refuse to access from this access point;
What described positional information comprised WLAN accesses sign, the IP address of WLAN access point, EPC network Tracking area, the lane place of EPC network, the cell designation information of 4G wireless network.
2) method based on access network type: IMS-HSS is based on access network type, it is allowed to or refusal is from this Access network type accesses;
Described access network type comprises: WLAN, the unknown, UTRAN, GERAN, the HSPA of evolution, EUTRAN, CDMA2000 1X、HRPD、eHRPD;
Described local roaming collocation method, uses tent or the mode of man-machine interface, configures and contract to not Same IMS user;
Local connection control method described in step D when user authorization request message that I-CSCF sends arrives, From described local roaming collocation method, obtain the local Roaming control information for particular user, it is allowed to or Person refuses user-authorization-request, thus controls whether user can use VoWiFi business.
Beneficial effect: the present invention proposes a kind of method realizing VoWiFi speech business roaming restriction.Described Method makes user through WLAN access net registration to IMS network, it is possible to according to the access network at user place Position or type, independently and neatly control whether user can use VoWiFi business, thus realize Roaming to the business of user VoWiFi limits.Further, the control of described method occurs user opportunity Initial registration is to the IMS network stage, it is to avoid follow-up a large amount of inactive signalings are mutual, it is possible to effectively reduce network Signalling load, has higher construction value.
Accompanying drawing explanation
Fig. 1 is VoWiFi business structure logical schematic.
Fig. 2 is the roam control method principle schematic that IMS-HSS is local.
Fig. 3 is a kind of method flow diagram realizing VoWiFi speech business roaming restriction.
Detailed description of the invention
Below in conjunction with the accompanying drawings 2, further illustrate the step that IMS-HSS this locality roam control method is implemented:
Step 200: maintained/managed personnel use the unrestrained of VoWiFi speech business by man-machine interface configuration user Trip control strategy, i.e. user based on access network position and or type allow roaming or do not allow roaming condition.
Step 201: maintained/managed personnel are contracted this roaming restricted information to different IMS users by tent;
Step 202:IMS-HSS receives the user-authorization-request information from I-CSCF, carries use in message The access network position at place, family or type information;
Step 203:IMS-HSS this locality roaming Access Control module sends roaming capacity request message to local unrestrained Trip strategy configuration module, obtains whether user possesses the ability of roaming under this access network position or type;
Whether IMS user's return that the locally configured module of step 204:IMS-HSS is concrete according to configuration information has The response of standby roaming capacity;
Step 205:IMS-HSS this locality roaming Access Control module this response in user's authorization response message It is sent to I-CSCF.
Below in conjunction with the accompanying drawings 3, further illustrate the present invention and realize the method that VoWiFi speech business roaming limits:
For purposes of illustration only, to forbid that user is described as a example by using VoWiFi business, i.e. limit user and connecing Use IMS speech business when network types is WLAN, and maintained/managed personnel have been configured with based on WLAN Roaming restrictive condition the signing of access network type give concrete IMS user.
Step 301: terminal, via WLAN bearer network, initiates registration request to SBC/P-CSCF, preparation note Volume, to IMS network, carries, in the registration request that terminal is initiated, the access network information that user is used, and this example is WLAN indicates;
Step 302:SBC/P-CSCF, after receiving registration request, increases the access that user is used in the message Net type information, this example is WLAN, then forwards the message to I-CSCF;
Step 303:I-CSCF carries the access network type information used by user, i.e. WLAN, sends out to IMS-HSS Play user-authorization-request, the login state of inquiry user;
Step 304:IMS-HSS, according to local roam control method, is analyzed and is forbidden that user at access network type is IMS speech business is used during WLAN;
Step 305:IMS-HSS returns user in authorization response message and does not allow to use the instruction of IMS network To I-CSCF;
Step 306:I-CSCF returns registration response, carries user and does not allow the instruction using IMS network to arrive SBC/P-CSCF;
Step 307:SBC/P-CSCF returns registration response, carries user and does not allow to use the instruction of IMS network To terminal, user cannot use VoWiFi business.
Step 306 ': if in step 305, what IMS-HSS returned in authorization response message is to allow user Use IMS network, then login request message continues to be forwarded to the S-CSCF of correspondence, continues normal IMS user Registration process.
IMS-HSS this locality roam control method shown in description of the invention accompanying drawing 3, it is also possible to by IMS net Other control network element in network completes, and other network element described is including but not limited to SCC-AS (Service Call Control Application Server, call business controls application server) network element entity.
For those skilled in the art, according to above implementation of class can be easy to association other Advantage and deformation.Therefore, the invention is not limited in above-mentioned instantiation, its as just example to the present invention A kind of form carry out explanation detailed, exemplary.In the range of without departing substantially from present inventive concept, this area is general Logical technical staff, should be included in by the technical scheme obtained by various equivalents according to above-mentioned instantiation Within scope of the presently claimed invention and equivalency range thereof.

Claims (2)

1. one kind realizes the method that VoWiFi speech business roaming limits, it is characterised in that its step is as follows:
Step A: terminal is attached to EPC by WiFi access network, uses IMS speech business;
Terminal initiates session instruction agreement SIP, sends a request for registration to SBC/P-CSCF, is registered to IMS network;
The registration request that terminal is initiated carries the access network positional information that user is used;Described access network position Confidence ceases, and comprise WLAN accesses sign, the IP address of access point;
Step B:SBC/P-CSCF is after receiving SIP registration request, and what increase user was used in the message connects Network types information, then forwards the message to I-CSCF;
Described access network type information comprises WLAN access network type;
Step C:I-CSCF carries user place access network positional information and access network type information, to IMS-HSS initiates user-authorization-request, and the login state of inquiry user selection service the S-CSCF of user;
Step D:IMS-HSS, according to local Roaming control strategy, is netted position according to the visit of user place and or connects Network types, decides whether that carrying out roaming limits;
If IMS-HSS judges to allow user to use IMS network, and have selected offer service for user S-CSCF or related information, then return successful user-authorization-answer message to I-CSCF, then I-CSCF Continue to forward SIP registration request message to corresponding S-CSCF, S-CSCF controlled follow-up certification note After Ce, terminate VoWiFi speech business roaming limit procedure;
If IMS-HSS judges not allow user to use IMS network, then return failed user-authorization-answer and disappear Breath arrives I-CSCF;
IMS-HSS this locality Roaming control strategy mentioned above, comprises local roaming collocation method and local access Control method;
Step E:I-CSCF returns failed registration and is responsive to SBC/P-CSCF;
Step F:SBC/P-CSCF returns registration failure and is responsive to terminal, endpoint registration failure, it is impossible to currently IMS business is used in accompanying carrying.
A kind of method realizing VoWiFi speech business roaming restriction the most according to claim 1, its feature exists In, the local Roaming control strategy described in step D, comprise local roaming collocation method and local Access Control side Method;
Described local roaming collocation method has two kinds, is location-based method and based on access network type respectively Method, the two method is respectively as follows:
1) position of access network when location-based method: IMS-HSS accesses based on WLAN or 4G wireless network Confidence ceases, it is allowed to or refuse to access from this access point;
What described positional information comprised WLAN accesses sign, the IP address of WLAN access point, EPC network Tracking area, the lane place of EPC network, the cell designation information of 4G wireless network;
2) based on access network type method: IMS-HSS is based on access network type, it is allowed to or refuse to connect from this Network types accesses;
Described access network type comprises: WLAN, the unknown, UTRAN, GERAN, the HSPA of evolution, EUTRAN, CDMA2000 1X、HRPD、eHRPD;
Described local roaming collocation method, uses tent or the mode of man-machine interface, configures and contract to not Same IMS user;
Described local connection control method is when the user authorization request message that I-CSCF sends arrives, from institute In the local roaming collocation method stated, obtain the local Roaming control information for particular user, it is allowed to or refuse User-authorization-request absolutely, thus control whether user can use VoWiFi business.
CN201610413860.7A 2016-06-13 2016-06-13 A method of realizing VoWiFi voice service roaming limitation Active CN105916115B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610413860.7A CN105916115B (en) 2016-06-13 2016-06-13 A method of realizing VoWiFi voice service roaming limitation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610413860.7A CN105916115B (en) 2016-06-13 2016-06-13 A method of realizing VoWiFi voice service roaming limitation

Publications (2)

Publication Number Publication Date
CN105916115A true CN105916115A (en) 2016-08-31
CN105916115B CN105916115B (en) 2019-05-17

Family

ID=56749963

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610413860.7A Active CN105916115B (en) 2016-06-13 2016-06-13 A method of realizing VoWiFi voice service roaming limitation

Country Status (1)

Country Link
CN (1) CN105916115B (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106330620A (en) * 2016-09-29 2017-01-11 南京邮电大学 SBC rerouting based electric power IMS network voice quality optimization method
CN106790998A (en) * 2016-11-23 2017-05-31 捷开通讯(深圳)有限公司 A kind of method and mobile terminal that linking function is set under offline mode
CN107135480A (en) * 2017-05-03 2017-09-05 河南理工大学 A kind of business anchorage method based on specific region
CN107172185A (en) * 2017-06-09 2017-09-15 中国联合网络通信集团有限公司 Network collocating method and device
CN107734491A (en) * 2017-11-06 2018-02-23 广东工业大学 A kind of method and system of VoWifi Roaming controls
CN107959970A (en) * 2016-10-17 2018-04-24 中国电信股份有限公司 Obtain method, system and the relevant device of the positional information of VoWiFi user
CN108769915A (en) * 2018-08-10 2018-11-06 中国联合网络通信集团有限公司 International roaming method for limiting and system
CN108834092A (en) * 2018-06-15 2018-11-16 杭州东信北邮信息技术有限公司 A kind of method and system for realizing VoWiFi communication service based on OTT
CN109862552A (en) * 2017-11-30 2019-06-07 西安华为技术有限公司 Update method, control method and the relevant apparatus of VoWiFi business
CN110972076A (en) * 2019-12-04 2020-04-07 惠州Tcl移动通信有限公司 Wireless call setting method, device, storage medium and terminal
CN111867048A (en) * 2020-07-22 2020-10-30 维沃移动通信有限公司 Registration control method and device of VoWiFi, electronic equipment and server
CN113453174A (en) * 2021-08-30 2021-09-28 中国信息通信研究院 Roaming place service providing method, IP multimedia system and storage medium
CN114173316A (en) * 2021-12-08 2022-03-11 中国联合网络通信集团有限公司 Method, device and storage medium for establishing service connection
CN116074771A (en) * 2023-03-02 2023-05-05 北京迪为双兴通讯技术有限公司 Coal mine 5G scheduling system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060294245A1 (en) * 2005-06-22 2006-12-28 Newstep Networks, Inc. Method and system for a communications session join function to facilitate the provision of enhanced communications services
CN104066073A (en) * 2014-06-30 2014-09-24 中国联合网络通信集团有限公司 Voice service processing method and system
CN104580781A (en) * 2015-01-08 2015-04-29 华为技术有限公司 Message processing method and system, proxy-call session control function device and server

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060294245A1 (en) * 2005-06-22 2006-12-28 Newstep Networks, Inc. Method and system for a communications session join function to facilitate the provision of enhanced communications services
CN104066073A (en) * 2014-06-30 2014-09-24 中国联合网络通信集团有限公司 Voice service processing method and system
CN104580781A (en) * 2015-01-08 2015-04-29 华为技术有限公司 Message processing method and system, proxy-call session control function device and server

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106330620A (en) * 2016-09-29 2017-01-11 南京邮电大学 SBC rerouting based electric power IMS network voice quality optimization method
CN106330620B (en) * 2016-09-29 2019-05-31 南京邮电大学 A kind of electric power IMS network voice quality optimization method based on SBC heavy-route
CN107959970A (en) * 2016-10-17 2018-04-24 中国电信股份有限公司 Obtain method, system and the relevant device of the positional information of VoWiFi user
CN107959970B (en) * 2016-10-17 2020-08-18 中国电信股份有限公司 Method, system and related equipment for acquiring position information of VoWiFi user
CN106790998A (en) * 2016-11-23 2017-05-31 捷开通讯(深圳)有限公司 A kind of method and mobile terminal that linking function is set under offline mode
CN107135480B (en) * 2017-05-03 2020-03-31 河南理工大学 Service anchoring method based on specific area
CN107135480A (en) * 2017-05-03 2017-09-05 河南理工大学 A kind of business anchorage method based on specific region
CN107172185A (en) * 2017-06-09 2017-09-15 中国联合网络通信集团有限公司 Network collocating method and device
CN107734491A (en) * 2017-11-06 2018-02-23 广东工业大学 A kind of method and system of VoWifi Roaming controls
CN107734491B (en) * 2017-11-06 2020-08-11 广东工业大学 VoWifi roaming control method and system
CN109862552A (en) * 2017-11-30 2019-06-07 西安华为技术有限公司 Update method, control method and the relevant apparatus of VoWiFi business
CN108834092A (en) * 2018-06-15 2018-11-16 杭州东信北邮信息技术有限公司 A kind of method and system for realizing VoWiFi communication service based on OTT
CN108769915B (en) * 2018-08-10 2021-02-19 中国联合网络通信集团有限公司 International roaming restriction method and system
CN108769915A (en) * 2018-08-10 2018-11-06 中国联合网络通信集团有限公司 International roaming method for limiting and system
CN110972076A (en) * 2019-12-04 2020-04-07 惠州Tcl移动通信有限公司 Wireless call setting method, device, storage medium and terminal
CN111867048A (en) * 2020-07-22 2020-10-30 维沃移动通信有限公司 Registration control method and device of VoWiFi, electronic equipment and server
WO2022017362A1 (en) * 2020-07-22 2022-01-27 维沃移动通信有限公司 Vowifi registration control method and apparatus, electronic device, and server
EP4187993A4 (en) * 2020-07-22 2024-01-03 Vivo Mobile Communication Co., Ltd. Vowifi registration control method and apparatus, electronic device, and server
CN113453174A (en) * 2021-08-30 2021-09-28 中国信息通信研究院 Roaming place service providing method, IP multimedia system and storage medium
CN114173316A (en) * 2021-12-08 2022-03-11 中国联合网络通信集团有限公司 Method, device and storage medium for establishing service connection
CN114173316B (en) * 2021-12-08 2023-08-11 中国联合网络通信集团有限公司 Method, device and storage medium for establishing service connection
CN116074771A (en) * 2023-03-02 2023-05-05 北京迪为双兴通讯技术有限公司 Coal mine 5G scheduling system

Also Published As

Publication number Publication date
CN105916115B (en) 2019-05-17

Similar Documents

Publication Publication Date Title
CN105916115A (en) Method for implementing roaming restriction to VoWiFi (Vocie Over WiFi) voice service
US10701758B2 (en) Method for continuously providing emergency call service through packet network
US10798618B2 (en) Method for managing session and SMF node
US11178714B2 (en) Proxy call session control function failure recovering method, apparatus and system
RU2727184C1 (en) Pdu session establishment procedure and amf node
US7911943B2 (en) Optimization of PDP context usage
CN101160881B (en) Method and communication system for circuit domain users accessing IP multimedia subsystem
CN104094638B (en) Urgent call switching from circuit switching to packet switched access network
CN100596076C (en) User equipment registration, activation system, method and device in personal management
CN1859412B (en) Registrating roaming custom IP address in evolution network and service using method
CN100459805C (en) Method of continuing called subscriber and its network system
CN101175248B (en) Urgent call implementing method and system for IP multimedia subsystem centralized control business
JP2013528993A (en) Terminal capability acquisition method and system using terminal, HSS, and core network element
CN104221406B (en) Mobile station and information-providing server
CN100571468C (en) A kind of CS domain call ending system and method
CN106105321A (en) IMS network is connected subscriber equipment to for method that real-time Communication for Power Network services by web browser
WO2007147357A1 (en) A method and system for transmitting subscriber terminate location information in ip multimedia subsystem
WO2010105462A1 (en) User equipment attachment process method, mobility management entity and user equipment thereof
CN101132555B (en) Method for non-IMS centralized business user obtaining roaming number
WO2019029228A1 (en) Method and device for processing voice service, and storage medium
CN101577892A (en) Method for avoiding influence of service restriction on emergency call continuity
CN1870635B (en) Service quality authorization method
US20110281548A1 (en) Method, apparatus and system for managing emergency services of mobility-restricted mobile station
CN110708728A (en) Method, equipment and storage medium for realizing voice call continuity
CN102547651B (en) User roaming method and ICS (internet connection sharing) enhanced network

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: No. 66, New Model Road, Gulou District, Nanjing City, Jiangsu Province, 210000

Applicant after: Nanjing Post & Telecommunication Univ.

Address before: 210003 9 Wen Yuan Road, Ya Dong new town, Nanjing, Jiangsu.

Applicant before: Nanjing Post & Telecommunication Univ.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant