CN105916115B - A method of realizing VoWiFi voice service roaming limitation - Google Patents

Abstract

The invention proposes a kind of methods for realizing VoWiFi voice service roaming limitation.When the method makes user by WLAN access net registration to IMS network, can according to where user access net position or type, independently and neatly whether control user can be used VoWiFi business, to realize that the roaming to the business of user VoWiFi limits.Further, the control opportunity of the method occurs to avoid subsequent a large amount of inactive signalings interaction in user's initial registration to IMS network stage, can be effectively reduced network signal load, there is higher engineering value.

Description

A method of realizing VoWiFi voice service roaming limitation

Technical field

The invention belongs to mobile communication fields, and in particular to a method of realize VoWiFi voice service roaming limitation.

Background technique

VoWiFi (Vocie Over WiFi, the voice service based on WiFi) refers to that user by WiFi network, uses Non-3 GPP network defined in 3GPP standard criterion accesses standard, is linked into credit WLAN or non-credit WLAN access module The EPC network (Evolved Packet Core, the packet-based core networks of evolution) of operator, authenticates successfully in EPC network authentication Afterwards, the message such as registration/call request are routed to IMS network, realize the IMS (IP such as voice, short message, supplementary service Multimedia System, IP multimedia system) business, framework is referring to attached drawing 1.

VoWiFi is related to EPC network element and IMS network element in 4G mobile communication system system, including HSS (Home Subscriber Server, home subscriber server), SGW (Serving GateWay, gateway), PGW (PDN GateWay, PDN Gateway), ePDG (Evolved Packet Data Gataway, the packet data gateway of evolution), TWAG (Trusted WLAN Access Gataway, the WLAN access gateway of credit), PCRF (Policy and Charging Rule Function, policy charging rule function), CSCF (Call Service Control Function, call business control Function processed), P-CSCF (Proxy-CSCF, proxy calling service control function), (Interrogating-CSCF is looked into I-CSCF Ask call business 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 net), UE (User Equipment, user equipment, that is, terminal) etc..

Firstly, user is linked into EPC network by the WLAN of credit or non-credit, authenticates and pass through in EPC network After completing attachment, user can access Internet through PGW and carry out other PS related services, and then user is in order to use Voice or short breath business based on IMS, need to be linked into IMS network via SBC/P-CSCF, are controlled by IMS network and realize use Voice or short message service of the family based on packet data.In this process, it is IMS that the WLAN of credit or non-credit, which accesses net, The bearer network of network, the service logic of user is controlled by IMS network to be completed.

Actual deployment is in use, there are following VoWiFi business scenarios can not pass through existing technology or standard solution Certainly:

The first scene: after user is linked into IMS network, operator, which needs to control user, cannot be used based on some position The VoWiFi business (such as voice or short message) set, but user is allowed to surf the Internet (such as surfing etc.) using position WLAN；Or Person

Second of scene: after user is linked into IMS network, operator, which needs to control user, cannot use VoWiFi industry Business, but VoLTE (Voice Over LTE, the voice based on LTE) business can be used, it nor affects on user and uses on WLAN Net.

Whether the first scene requirement IMS network can be had when user carries out VoWiFi business based on position control user Permission uses the business, but does not influence the data services such as user's online；Second of scene requirement IMS network carries out voice in user When business, it can control whether user has permission use according to type of user access networks, such as WLAN 4G wireless network etc. The business.

Summary of the invention

In view of the deficiencies of the prior art, the present invention proposes a kind of methods for realizing VoWiFi voice service roaming limitation.Institute When the method for stating makes user be attached to EPC core net using VoWiFi business by WiFi, IMS network can be current according to user Access net position and/or type, determine whether the user is allowed to use VoWiFi business.

The present invention in order to solve the above technical problems, the technical solution adopted is as follows:

A method of realizing VoWiFi voice service roaming limitation, its step are as follows:

Step A: terminal accesses net by WiFi and is attached to EPC success, uses IMS voice or other business；

Terminal initiates SIP (Session Indicator Protocol, session indicate agreement) registration request to SBC/P- CSCF is registered to IMS network；

Access net location information used by a user is carried in the registration request that terminal is initiated；Access net position letter Breath, access mark, the IP address of access point comprising WLAN；

Step B:SBC/P-CSCF increases access net class used by a user after receiving SIP registration request in the message Type information, then forwards the message to I-CSCF；

The access network type information includes WLAN access network type；

Access net location information and access network type information where step C:I-CSCF carries user, are initiated to IMS-HSS User-authorization-request inquires the login state of user and selects the S-CSCF of service user；

Step D:IMS-HSS is according to local Roaming control strategy, according to visit net position where user and/or access net class Type decides whether to carry out roaming limitation；

If IMS-HSS determines to allow user to use IMS network, and for user selected to provide the S-CSCF of service or Related information then returns to successful user-authorization-answer message to I-CSCF, and then I-CSCF continues that SIP registration request is forwarded to disappear Cease corresponding S-CSCF, after the completion of being controlled by S-CSCF after certification registration after, terminate VoWiFi voice service roaming limitation Process；

If IMS-HSS judgement does not allow user using IMS network, the user-authorization-answer message of failure is returned to I- CSCF；

The local IMS-HSS Roaming control strategy described above includes local roaming configuration method and local access control Method；

The registration that step E:I-CSCF returns to failure is responsive to SBC/P-CSCF；

Step F:SBC/P-CSCF returns to registration failure and is responsive to terminal, and endpoint to register failure can not be current accompanying Carrying on use IMS business.

Further, local described in step D roams configuration method by any of following two method or both Combination constitute, specifically:

1) location-based method: the location information of access net when IMS-HSS is accessed based on WLAN 4G wireless network is permitted Perhaps or refusal is accessed from the access point；

The location information includes access mark, the IP address of WLAN access point, the tracking area of EPC network, EPC of WLAN The position area of network, 4G wireless network cell designation information.

2) based on the method for access network type: IMS-HSS is based on access network type, allows or refuses from the access net class Type access；

The access network type includes: WLAN, unknown, UTRAN, GERAN, evolution HSPA, EUTRAN, CDMA2000 1X,HRPD,eHRPD；

The local roaming configuration method is configured and is contracted to different by the way of tent or man-machine interface IMS user；

Local connection control method described in step D is when the user authorization request message that I-CSCF is sent reaches, from institute In the local roaming configuration method stated, the local Roaming control information for being directed to particular user is obtained, allows or refusal user awards Power request, to control whether user can be used VoWiFi business.

The utility model has the advantages that the invention proposes a kind of methods for realizing VoWiFi voice service roaming limitation.The method makes User by WLAN access net registration arrive IMS network when, can according to where user access net position or type, independence And neatly whether control user can be used VoWiFi business, to realize that the roaming to the business of user VoWiFi limits System.Further, the control opportunity of the method occurs in user's initial registration to IMS network stage, avoids subsequent big Inactive signaling interaction is measured, network signal load is can be effectively reduced, there is higher engineering value.

Detailed description of the invention

Fig. 1 is VoWiFi business structure logical schematic.

Fig. 2 is the roam control method schematic illustration of the local IMS-HSS.

Fig. 3 is a kind of method flow diagram for realizing VoWiFi voice service roaming limitation.

Specific embodiment

With reference to the accompanying drawing 2, further illustrate the step of local IMS-HSS roam control method is implemented:

Step 200: maintained/managed personnel configure the Roaming control that user uses VoWiFi voice service by man-machine interface The condition that strategy, i.e. user allow to roam or do not allow to roam based on access net position and/or type.

Step 201: maintained/managed personnel are contracted the roaming restricted information to different IMS users by tent；

Step 202:IMS-HSS receives the user-authorization-request information from I-CSCF, and user place is carried in message Access net position or type information；

Locally roaming access control module sends roaming capacity request message to local roaming policy to step 203:IMS-HSS Configuration module obtains the ability whether user has roaming under the access net position or type；

Step 204:IMS-HSS be locally configured module according to configuration information be specific IMS user return whether have it is unrestrained The response of trip ability；

Locally roaming access control module is sent to the response in user's authorization response message step 205:IMS-HSS I-CSCF。

With reference to the accompanying drawing 3, further illustrate the method that the present invention realizes VoWiFi voice service roaming limitation:

For purposes of illustration only, by forbid user using VoWiFi business for be described, i.e., limitation user access net class IMS voice service is used when type is WLAN, and maintained/managed personnel have been configured with the roaming based on WLAN access network type Restrictive condition and contract given specific IMS user.

Step 301: terminal initiates registration request to SBC/P-CSCF, preparation is registered to IMS net via WLAN bearer network Network carries access network information used by a user in the registration request that terminal is initiated, and this example is WLAN mark；

Step 302:SBC/P-CSCF increases access network type used by a user after receiving registration request in the message Information, this example are WLAN, then forward the message to I-CSCF；

Step 303:I-CSCF carries access network type information, i.e. WLAN used in user, initiates user to IMS-HSS and awards Power request, inquires the login state of user；

For step 304:IMS-HSS according to local roam control method, analysis forbids user when access network type is WLAN Use IMS voice service；

Step 305:IMS-HSS returns to user in authorization response message does not allow instruction using IMS network to I- CSCF；

Step 306:I-CSCF returns to registration response, and carrying user does not allow instruction using IMS network to SBC/P- CSCF；

Step 307:SBC/P-CSCF returns to registration response, and carrying user does not allow instruction using IMS network to terminal, User is not available VoWiFi business.

Step 306 ': if in step 305, what IMS-HSS was returned in authorization response message is that user is allowed to use IMS Network, then login request message continues to be forwarded to corresponding S-CSCF, continues normal IMS user registration course.

The local IMS-HSS roam control method shown in description of the invention attached drawing 3, can also be by IMS network Other control network elements are completed, and other network elements are including but not limited to SCC-AS (Service Call Control Application Server, call business control application server) network element entity.

For those skilled in the art, the other advantage of association can be easy to according to the above implementation of class And deformation.Therefore, the invention is not limited to above-mentioned specific examples, carry out as just example to a kind of form of the invention In detail, exemplary explanation.In the range of without departing substantially from present inventive concept, those of ordinary skill in the art are according to above-mentioned specific reality Example should be included in scope of the presently claimed invention and its equivalency range by the obtained technical solution of various equivalent replacements Within.

Claims (1)

1. a kind of method for realizing VoWiFi voice service roaming limitation, which is characterized in that its step are as follows:

Step A: terminal accesses net by WiFi and is attached to EPC, uses IMS voice service；

Terminal initiates session and indicates agreement SIP, sends a request for registration to SBC/P-CSCF, is registered to IMS network；

Access net location information used by a user is carried in the registration request that terminal is initiated；The access net location information, Access mark, the IP address of access point comprising WLAN；

Step B:SBC/P-CSCF increases access network type letter used by a user after receiving SIP registration request in the message Breath, then forwards the message to I-CSCF；

The access network type information includes WLAN access network type；

Step C:I-CSCF carries access net location information and access network type information where user, initiates user to IMS-HSS Authorization requests inquire the login state of user and select the S-CSCF of service user；

Step D:IMS-HSS is according to local Roaming control strategy, according to visit net position and/or access network type where user, certainly It is fixed whether to carry out roaming limitation；

If IMS-HSS determines that user is allowed to use IMS network, and has selected to provide the S-CSCF of service or association for user Information then returns to successful user-authorization-answer message to I-CSCF, and then I-CSCF continues that SIP registration request message is forwarded to arrive Corresponding S-CSCF, after the completion of being controlled by S-CSCF after certification registration after, terminate VoWiFi voice service roam limit procedure；

If IMS-HSS judgement does not allow user using IMS network, the user-authorization-answer message of failure is returned to I- CSCF；

The local Roaming control strategy, includes local roaming configuration method and local connection control method；

There are two types of the local roaming configuration methods, is location-based method and based on access network type method respectively, described Two methods are respectively as follows:

1) location-based method: IMS-HSS based on WLAN 4G wireless network access when access net location information, allow or Person's refusal is accessed from the access point；

The location information includes the access mark of WLAN, the IP address of WLAN access point, the tracking area of EPC network, EPC network Position area, 4G wireless network cell designation information；

2) be based on access network type method: IMS-HSS is based on access network type, allows or refusal connects from the access network type Enter；

The access network type includes: WLAN, unknown, UTRAN, GERAN, HSPA, EUTRAN of evolution, CDMA20001X, HRPD,eHRPD；

The local roaming configuration method is configured and is contracted to different IMS use by the way of tent or man-machine interface Family；

The local connection control method is when the user authorization request message that I-CSCF is sent reaches, from the local roaming In configuration method, the local Roaming control information for being directed to particular user is obtained, allow or refuses user-authorization-request, to control Whether user processed can be used VoWiFi business；

The registration that step E:I-CSCF returns to failure is responsive to SBC/P-CSCF；

Step F:SBC/P-CSCF returns to registration failure and is responsive to terminal, and endpoint to register failure can not be held in current accompanying IMS business is used in load.