CN102857891A - Domain selection method and domain selection system for called party and HSS(home subscriber server) in domain selection system - Google Patents

Domain selection method and domain selection system for called party and HSS(home subscriber server) in domain selection system Download PDF

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Publication number
CN102857891A
CN102857891A CN2011101749767A CN201110174976A CN102857891A CN 102857891 A CN102857891 A CN 102857891A CN 2011101749767 A CN2011101749767 A CN 2011101749767A CN 201110174976 A CN201110174976 A CN 201110174976A CN 102857891 A CN102857891 A CN 102857891A
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China
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territory
called subscriber
hss
subscriber
calling
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CN2011101749767A
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CN102857891B (en
Inventor
刘景磊
姜怡
梁聚宏
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China Mobile Communications Group Co Ltd
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China Mobile Communications Group Co Ltd
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Priority to CN201110174976.7A priority Critical patent/CN102857891B/en
Priority to PCT/CN2012/077533 priority patent/WO2013000398A1/en
Publication of CN102857891A publication Critical patent/CN102857891A/en
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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]
    • 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
    • H04L65/1069—Session establishment or de-establishment
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005—Multiple registrations, e.g. multihoming

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses a domain selection method and a domain selection system for the called party and an HSS(home subscriber server) in charging of domain selection. The domain selection method for the called party includes that the HSS acquires calling and session service type which are initiated from a calling party in an IMS(IP multimedia subsystem) domain to the called party, determines registration state and/or terminal type of the called party in the IMS domain, determines the registration state of the called party in a CS (circuit switched) domain by inquiring a home location register HLR, and routes the calling according to determined information including the registration state, the session service type and/or the terminal type of the called party in the IMS domain and the determined information including the registration state of the called party in the CS domain. The HLR is inquired by the HSS which is configured, so that the registration state of the called party in the CS domain can be acquired. Further, according to service type of the calling party, the domain selection method and the domain selection method can solve the technical problem of called selection can be solved well for users register the same number in multiple domains.

Description

A kind of called subscriber's area selecting method and system, and the HSS in the system
Technical field
The application relates to moving communicating field, relates in particular to a kind of called subscriber's area selecting method and system, and the HSS in the system.
Background technology
Voice call continuity service (VCC, Voice Call Continuity) refers to the continuity of audio call between GSM/UMTS circuit switching (CS territory) in the second generation/third generation (2G/3G) mobile radio communication and the IP Multimedia System (IMS territory).
Wherein, the subject matter that VCC solves is to switch, and comprises that the IMS territory switches to the CS territory and switches to the IMS territory from the CS territory.The VCC scheme can have influence on the selection of registration, originating call, terminating call, network domains, and supplementary service and charging etc.; But the territory of VCC is selected to solve the cross-domain problem of voice, and it can not solve the problem of called subscriber's network selection.Usually address this problem is that SCC AS server (Service Centralization and Continuity Application Server) in the IMS territory is realized.Namely according to the method, forward his all territory business to the IMS territory, be unified in the IMS territory and trigger the finishing service logic.For example, user's business datum is stored on HSS and the relevant AS, and as user during in the CS territory, session will trigger professional AS by interface to S-CSCF by E-MSC.
Altogether number is the system of sharing same set of code number when there are many core networks in operator, in common coding system identical yard number can be resident in many core networks at the same time or separately.For example, the user is signatory CS territory and CM-IMS territory simultaneously, and uses duplicate numbers in these two territories.For the user of common number, the problem that existence domain is selected.For example, there is the altogether user of number for CS territory and IMS territory, needs to solve the called subscriber in the network selection problem of landing in CS territory and IMS territory.
Wherein, fusion one number service based on CM-IMS refers to that the user passes through to apply for to China Mobile, a mobile phone (GSM mobile handset or TD mobile phone) number or IMS termination number (Tel URI) are set to this professional major number, and can arrange with other one to three same province (or municipality directly under the Central Government) in phone number or the IMS termination number carry out number for binding during outgoing the binding number and, binding number during calling, the number of binding is as this professional associated numbers, caller identification is major number (optional) when realizing outgoing, and binding terminal is with shaking or CS territory and the IMS territory convergence services of CSC during calling.
Wherein, an industry is engaged in referring to that the user uses the client to bring in the original G network service of continuity, the user uses the USB draw-in groove SIM card to be inserted the portable terminal that client is housed, when the user uses the customizing SIP terminal to sign in to the IMS network, to adopt original GSM number, enjoy main business function signatory in the GSM network, and USB telephone service server is by the interactive function in circuit domain and IMS territory, finished should business business realizing.
But, be the problem of user speech continuation because VCC mainly solves, when the user occurs in the process of conversation in the cross-domain situation, use to talk about by VCC to be routed to another territory.But this kind technical scheme can not solve the problem that the called territory net that falls is selected, and this problem adopts the mode of SCC AS to realize the flow process more complicated; And, one number service and a capable business realizing only be the part of common number, it can not solve the technical problem of common number user's called network selection fully.
In addition, come with HSS mutual at IMS territory I-CSCF with the LIR/LIA message of Diameter, set up the S-CSCF name of this user of acquisition service in the process or the S-CSCF ability that user S-CSCF selects in the SIP conversation, namely in present IMS territory, I-CSCF CSCF (CSCF, Call Session Control Function) is obtained the information of this user's of service S-CSCF from HSS by LIR/LIA message.
And select in the decision logic in common number field, the territory of the common number user's of the two standbies of use video traffic is selected and the territory selection logic of speech business is different, this just requires HSS can know that the employed business of active user is video traffic or speech business, this is that the LIR/LIA message institute of current Diameter is unappeasable, therefore, need to make improvements.
Summary of the invention
The application is for above-mentioned defective of the prior art, a kind of called subscriber's area selecting method and system are provided, it lands the message of territory indication by carrying of sending to HSS that the message carry professional indication and HSS return, and then realizes that the territory of the called subscriber after the calling subscriber makes a call in the IMS territory selects problem.
According to the application's a aspect, the application provides a kind of called subscriber's area selecting method, and it mainly comprises the following steps:
Home subscriber server HSS is known calling and the session service type that IMS territory calling subscriber initiates to the called subscriber;
Described HSS determines that the called subscriber is at the login state in IMS territory;
Described HSS inquiry attaching position register HLR determines the login state of called subscriber in the CS territory; And,
Described HSS according to determined called subscriber in login state, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
Wherein, the described calling of described HSS route further comprises:
Described HSS inquiry network selection policy database;
According to the called subscriber login state, session service type and the called subscriber in IMS territory the login state in CS territory among the network selection policy database selective call land the territory.
Another aspect according to the application, the invention provides a kind of called subscriber's domain selecting system, comprise: home subscriber server HSS and attaching position register HLR, wherein, described HSS obtains IMS territory calling subscriber and makes a call and the session service type to the called subscriber; Described HSS determines that the called subscriber is at the login state in IMS territory; Described HSS inquiry attaching position register HLR determines the login state of called subscriber in the CS territory; And, described HSS according to determined called subscriber in login state, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
Wherein, further comprise: the network selection policy database, described HSS according to the called subscriber login state, session service type and the called subscriber in IMS territory the login state in CS territory select among the network selection policy database and definite session land the territory.
Wherein, further comprise: CSCF CSCF, described CSCF determines the session service type and sends LIR message to HSS according to the calling subscriber's who receives session request, and determines and transfer the call to land among the territory according to the LIA message that HSS returns.
Wherein, further comprise: MGCF MGCF, described CSCF sends the route indication to described MGCF, and MGCF notifies the called subscriber to answer the call in the CS territory according to above-mentioned indication.
According to another aspect of the application, the invention provides a kind of home subscriber server HSS, comprising: determination module and routing selecting module, wherein,
Described determination module, when IMS territory calling subscriber makes a call to the called subscriber, determine the login state of called subscriber in the IMS territory and calling subscriber's session service type, and inquire about to determine that the called subscriber is at the login state in CS territory to attaching position register HLR;
Described routing selecting module, according to the called subscriber in the login state in CS territory, calling subscriber's session service type and the called subscriber login state in the IMS territory, the described calling of route.
Wherein, described determination module further comprises:
Information receiving unit be used for to receive the LIA message with the type of service indication among the CSCF, determines calling subscriber's session service type;
Query unit is used for sending query messages to described HLR;
Determining unit according to the affirmation message that receives from described HLR, is determined called subscriber's the login state in the CS territory.
Wherein, described routing selecting module further comprises:
The route judging unit, according to determined called subscriber the login state in CS territory, calling subscriber's type of service and called subscriber at the login state in IMS territory, judge routing mode;
The route indicating member according to the routing mode of judging, sends the described calling of LIA message indication CSCF route to CSCF.
The present invention is after having taked technique scheme, can inquire about HLR by home subscriber server HSS and obtain the login state of called subscriber in the CS territory, obtain login state and/or the terminal type of called subscriber in the IMS territory by HSS, and, the calling subscriber's who obtains in conjunction with HSS type of service, can be according to its login state and/or terminal type in the CS/IMS territory, realize transferring the call to default landing among the territory according to the network selection strategy, and then solve preferably the user's of multiple domain registration jack per line the technical problem of called network selection, have extraordinary technique effect.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in detail, so that above-mentioned advantage of the present invention is clearer and more definite.
Fig. 1 is the flow chart of embodiment of called subscriber's of the present invention area selecting method;
Fig. 2 is the flow chart of another embodiment of called subscriber's of the present invention area selecting method;
Fig. 3 is the frame structure schematic diagram of the embodiment of called subscriber's domain selecting system of the present invention;
Fig. 4 is the module diagram of the embodiment of home subscriber server HSS of the present invention;
Fig. 5 is the module diagram of embodiment of the HSS of home subscriber of the present invention service;
Fig. 6 is the module diagram of embodiment of the HSS of home subscriber of the present invention service.
Embodiment
Come the present invention is carried out detailed further description below in conjunction with specific embodiment.
(embodiment one)
Fig. 1 is the flow chart of embodiment of called subscriber's of the present invention area selecting method;
It mainly shows when when the calls customer end subscriber in IMS territory is initiated certain professional call request, and system determines the method flow that called subscriber's territory is selected according to the type of service of caller.
As shown in the figure, the method mainly comprises following key step:
S101: home subscriber server HSS is known calling and the session service type that IMS territory calling subscriber initiates to the called subscriber; Usually, this session service type can be speech business, video traffic, data service, facsimile service, also can carry out according to later business development the expansion of miscellaneous service, wherein, among a preferred embodiment, session service in IMS territory control function CSCF receives the Invite message that the calling subscriber initiates, and determines that according to this message calling subscriber's (client) institute will be to the session service type of called subscriber's initiation.
S102: described HSS determines that the called subscriber is at the login state in IMS territory;
Here, be understandable that, HSS can determine that by the registration status information of inquiring about the IMS territory terminal of self storing the called subscriber is at the login state in IMS territory.
S103: described HSS inquiry attaching position register HLR determines the login state of called subscriber in the CS territory; Wherein, among a preferred embodiment, described HSS sends query messages to described attaching position register HLR, for example, increases a MAP interface with the HLR intercommunication at HSS, and described HSS communicates by letter mutually with HSS by this MAP interface.
Wherein, described HLR returns acknowledge message in response to described query messages and to HSS;
And, carried the registration status information of called subscriber in the CS territory in the described acknowledge message, for example, the called subscriber in the CS territory, register or, the called subscriber does not register in the CS territory;
Then, described HSS determines that according to the affirmation message that receives from described HLR the called subscriber is at the login state in CS territory.
S104: described HSS according to determined called subscriber in login state, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
Wherein, among a preferred embodiment, also be provided with a network selection policy database, wherein, among database, be provided with one group or organize the network selection logic strategy according to operator or User Defined more:
For example, for speech business, if the user registers in CS territory or IMS territory, then speech business is forwarded among the CS territory; If related service is registered in the IMS territory, and has not yet registered in the CS territory, then speech business is transferred among the IMS territory;
In like manner, for data service, video traffic, facsimile service, can do similar logic strategy; And, among this network selection policy database, leave the interface of some expansions also can for following activating business, if the user has special business in follow-up, can carry out quickly relatively rapidly professional subsequent expansion; For example, described HSS obtains current network condition, and then according in conjunction with above-mentioned ground field selection factor and in conjunction with this secondary cause of network condition, carries out network selection.
At this moment, described HSS inquiry network selection policy database;
According to the called subscriber login state, session service type and the called subscriber in IMS territory the login state in CS territory among the network selection policy database selective call land the territory.
And if operator or user think that the acquisition elements that also has other affects the territory selection problem of HSS, we can by changing the logic strategy of database inside, make it satisfy the demand of operator.
Wherein, among step S101, described HSS knows that IMS territory calling subscriber comprises to the concrete steps of the session service type of called subscriber's initiation:
Session service control function CSCF receives the session request that the calling subscriber initiates in the IMS territory;
Described CSCF generates LIR information and sending with traffic indicator bit to HSS according to above-mentioned session request; And described HSS receives described LIR message and determines the session service type.
For example, session service control function CSCF in the IMS territory receives the Invite message that the calling subscriber initiates, and send with the LIR message of session service indication to HSS, and determine and transfer the call to land among the territory according to the LIA message with the territory indication that HSS returns.
Because among present IMS territory, I-CSCF obtains the information of this user's of service S-CSCF from HSS by LIR/LIA message.Therefore, in order to realize to identify current session service type between the LIR/LIA between HSS and the CSCF and land the territory indication, must expand for the LIR/LIA message of existing Diameter, make it with user's service identification.
For example, among a specific embodiment, the present invention has added the traffic flag extended field among the LIR of Diameter message:
[Session-Type] // type of service
*[AVP]
*[Proxy-Info]
*[Route-Record]
[Session-Type] field wherein is extended field, will carry the type of service indication, and its value is Voice, Video, Data, Fax or Extand, the session service type that has represented respectively current calling subscriber is speech business, video traffic, data service, facsimile service or other.
Among this embodiment, LIA message has equally also added lands territory indication extension field:
Veer before [Session-Result] // session
*[AVP]
*[Failed-AVP]
*[Proxy-Info]
*[Route-Record]
[Session-Result] field wherein is extended field, will carry the type of service indication, and its value is CS, IMS, Both and Extand have represented respectively CS that the called subscriber will turn to and have landed territory, IMS and land territory or two territory and land, and, some other situation.
And further, the step of the described calling of described HSS route further comprises:
Described HSS determines the territory of landing of calling; Described HSS generates with landing the LIA message of territory indicating bit and returns to CSCF; And described CSCF is in response to described LIA message, determines the territory of landing of calling out, and transfers the call to definite landing among the territory.
Among preferred embodiment, the Selective type in territory of landing is CS territory, IMS territory, these three kinds of situations of the two territories of IMS/CS.Wherein, described CSCF further comprises among transferring the call to the CS territory:
Described CSCF sends the message of indicating with the territory to MGCF MGCF;
In response to described message, described MGCF receives described message, and notifies the called subscriber to answer the call in the CS territory.Among a preferred embodiment, in the time of among described HSS determines the described CS of transferring the call to territory, described CSCF sends the message of indicating with the territory to MGCF MGCF, for example, the message of Invite (PreA, B) form, wherein, PreA suppresses HLR and carries out territory selection logic, walks normal CS territory flow process.
If described HSS determines CSCF and transfer the call among the IMS territory, then described HSS generates and lands the LIA message of territory indicating bit with IMS and return to CSCF; And described CSCF continues normal follow-up flow process in response to described LIA message.
If described HSS determines CSCF and transfer the call among the two territories of IMS and CS, at this moment, described CSCF receives the LIA message of landing the territory indication with the two territories of IMS/CS; Then, according to above-mentioned LIA message, described CSCF triggers one number service AS and realizes that the same of one number service shakes or suitable shake business.
The present invention is after having taked technique scheme, because described HSS can be video traffic or speech business according to the call business among the current calling subscriber, and then select according to the network selection policy database, owing to can define for various carrier policy according to operator or user oneself among the network selection policy database, and, this strategy can also be expanded according to follow-up change, in addition, realize transferring the call to default landing among the territory according to the network selection strategy, and then solve preferably the user's of multiple domain registration jack per line the technical problem of called network selection, have extraordinary technique effect.
(embodiment two)
Fig. 2 is the flow chart of another embodiment of called subscriber's of the present invention area selecting method.
Difference between this flow chart and Fig. 1 is,
Described HSS has also comprised the step of the endpoint registration type of obtaining the called subscriber when obtaining user registration state, specifically, it comprises following step:
S201: home subscriber server HSS is known calling and the session service type that IMS territory calling subscriber initiates to the called subscriber:
Similar with embodiment one, this session service type can be speech business, video traffic, data service, facsimile service, also can carry out according to later business development the expansion of miscellaneous service;
And among a preferred embodiment, session service in IMS territory control function CSCF receives the Invite message that the calling subscriber initiates, and determines that according to this message calling subscriber's (client) institute will be to the session service type of called subscriber's initiation.
S202: described HSS determines that the called subscriber is at the login state in IMS territory, simultaneously, the database of described HSS inquiry self is determined called subscriber's terminal type, and usually, this terminal type is to bring up by the NAS signaling to be stored among the HSS in user's registration.
S203: described HSS inquiry attaching position register HLR determines the login state of called subscriber in the CS territory; Wherein, among a preferred embodiment, described HSS sends query messages to described attaching position register HLR, for example, increase a MAP interface with the HLR intercommunication at HSS, by above-mentioned interface, described HSS can inquire about the user's who stores among the HSS login state.
Described HLR returns acknowledge message in response to described query messages and to HSS, wherein, has carried the registration status information of called subscriber in the CS territory in the described acknowledge message, for example, the called subscriber in the CS territory, register or, the called subscriber does not register in the CS territory.Then, described HSS determines that according to the affirmation message that receives from described HLR the called subscriber is at the login state in CS territory.
S204: described HSS is according to terminal type and the login state in CS territory of determined called subscriber the login state in IMS territory, session service type, called subscriber, the described calling of route.
Wherein, among a preferred embodiment, also be provided with a network selection policy database, wherein, among database, be provided with one group or organize the network selection logic strategy according to operator or User Defined more.
For example, when singly treating terminal during for called user terminal, be when speech business is called out, if its login state in the CS territory is registered at calling service, and the login state in the IMS territory is when being unregistered, and described HSS will route the call to CS territory continuing called subscriber;
If its login state in the CS territory is unregistered, and at the login state of the speech business in IMS territory when being registered, described HSS will route the call to IMS territory continuing called subscriber;
If all less than registration, then described HSS will not carry out route to this calling in CS territory and IMS territory for it, in this time, described HSS is can subscriber call called unregistered.
Because video traffic is not supported in general CS territory, therefore, for singly treating the terminal use, if when calling service is the video traffic calling:
If it is registered in the IMS territory, then transfer the call to and carry out normal service call in the IMS territory; If it is not registration in the IMS territory, and has registered in the CS territory, then usually, system can carry out audio frequency to above-mentioned video traffic and fall after rise, notifies the called subscriber to answer session in the CS territory.
The same with embodiment, can also comprise: described HSS inquiry network selection policy database; Then, according to the called subscriber the login state in IMS territory and terminal type, session service type and called subscriber the login state in CS territory among the network selection policy database selective call land the territory.
Other basic steps can be described with reference to the method for embodiment one, and its basic step all is similar with principle, does not repeat them here.
The present invention is after having taked technique scheme, because described HSS can be video traffic or speech business according to the call business among the current calling subscriber, and then selects according to the subscriber policy database, has the territory and selects easily technological merit; And it has also determined called subscriber's terminal type when carrying out called subscriber's inquiry, and then has finished the network selection business of system in conjunction with called subscriber's terminal type, and then has solved the technical problem of the called network selection of user of multiple domain registration jack per line.
(embodiment three)
Fig. 3 is the frame structure schematic diagram of the embodiment of called subscriber's domain selecting system of the present invention;
As shown in the figure, among this preferred embodiment, called subscriber's domain selecting system, comprise, home subscriber server HSS100 and attaching position register HLR300 and a network selection policy database 200, wherein, the calling subscriber that obtains in the IMS territory of described HSS100 makes a call and the session service type to the called subscriber;
Simultaneously, described HSS100 determines that the called subscriber is at the login state in IMS territory, and, be provided with the MAP interface of mutual communication between described HSS100 and the HLR300, wherein, described HSS sends query messages to described attaching position register HLR300, and, described HLR300 is in response to described query messages, and the login state of definite called subscriber in the CS territory;
Then, described HSS100 inquires about described network selection policy database 200, according to determined called subscriber in login state, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
Corresponding with the method for embodiment two, among another embodiment, described HSS100 determines called subscriber's terminal type, then, described HSS100 inquires about described network selection policy database 200, according to determined called subscriber in login state, terminal type, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
And described network selection policy database 200 is to can customize assembly, for example, for speech business, if the user registers in CS territory or IMS territory, then can define logic speech business is forwarded among the CS territory; If related service is registered in the IMS territory, and has not yet registered in the CS territory, then can define logic speech business is transferred among the IMS territory;
And among this network selection policy database, user or operator leave the interface of some expansions can also for following activating business, if the user has special business in follow-up, can carry out quickly relatively rapidly professional subsequent expansion; For example, can also define in conjunction with current network condition, set the logic strategy of network selection etc.
In order to realize that described HSS100 obtains the type of service of the caller in IMS territory, this system further comprises CSCF CSCF400, wherein, described CSCF determines the session service type according to the calling subscriber's who receives session request, for example, session service control function CSCF in the IMS territory receives the Invite message that the calling subscriber initiates, and send with the LIR message of session service indication to HSS100, and determine and transfer the call to land among the territory according to the LIA message with the territory indication that HSS100 returns.
Because among present IMS territory, I-CSCF obtains the information of this user's of service S-CSCF from HSS by LIR/LIA message.Therefore, in order to realize to identify current session service type between the LIR/LIA between HSS and the CSCF and land the territory indication, must expand for the LIR/LIA message of existing Diameter, make it with user's service identification.
For example, among a specific embodiment, the present invention has added the traffic flag extended field among the LIR of Diameter message:
[Session-Type] // type of service
*[AVP]
*[Proxy-Info]
*[Route-Record]
[Session-Type] field wherein is extended field, will carry the type of service indication, and its value is Voice, Video, Data, Fax or Extand, the session service type that has represented respectively current calling subscriber is speech business, video traffic, data service, facsimile service or other.
Among this embodiment, LIA message has equally also added lands territory indication extension field:
Veer before [Session-Result] // session
*[AVP]
*[Failed-AVP]
*[Proxy-Info]
*[Route-Record]
[Session-Result] field wherein is extended field, will carry the type of service indication, and its value is CS, IMS, Both and Extand have represented respectively CS that the called subscriber will turn to and have landed territory, IMS and land territory or two territory and land, and, some other situation.
Through after the above-mentioned processing, described HSS100 determines the territory of landing of calling; Then, described HSS100 generates with landing the LIA message of territory indicating bit and returns to CSCF400; In response to described LIA message, described CSCF400 determine to call out lands the territory, and transfers the call to definite landing among the territory; And among this preferred embodiment, the described territory of landing is CS territory or IMS territory or the two territories of IMS/CS.
As shown in Figure 3, described called domain selecting system also includes, mobile switching center server MSC S600 and MGCF MGCF500, wherein, in the time of among described HSS100 determines the described CS of transferring the call to territory, described CSCF400 sends the message of indicating with the territory to MGCF MGCF500, for example, and Invite (PreA, B) message of form, wherein, PreA suppresses HLR and carries out territory selection logic, walks normal CS territory flow process.
If described HSS100 determines CSCF400 and transfer the call among the IMS territory, then described HSS generates and lands the LIA message of territory indicating bit with IMS and return to CSCF400; And in response to described LIA message, described CSCF continues normal follow-up flow process.
If described HSS determines CSCF and transfer the call among the two territories of IMS and CS, at this moment, described CSCF400 receives the LIA message of landing the territory indication with the two territories of IMS/CS; Then, according to above-mentioned LIA message, described CSCF triggers one number service AS and realizes that the same of one number service shakes or suitable shake business.
And this system goes among the embodiment two equally, and namely described HSS is according to terminal type and the login state in CS territory of determined called subscriber the login state in IMS territory, session service type, called subscriber, the described calling of route.Its module that realizes above-mentioned functions goes for not repeating them here among the native system equally.
(embodiment four)
Fig. 4 is the module diagram of the embodiment of home subscriber server HSS of the present invention;
As shown in Figure 4, described home subscriber server HSS100, mainly comprise, determination module 101 and routing selecting module 102, wherein, described determination module 101 is when IMS territory calling subscriber makes a call to the called subscriber, determine the login state of called subscriber in the IMS territory and calling subscriber's session service type, and inquire about to determine that the called subscriber is at the login state in CS territory to attaching position register HLR;
Described routing selecting module 102, according to the called subscriber in the login state in CS territory, calling subscriber's session service type and the called subscriber login state in the IMS territory, the described calling of route.
Fig. 5 is the module diagram of embodiment of the HSS of home subscriber of the present invention service;
As shown in the figure, described determination module 101 further comprises: information receiving unit 1013, be used for to receive the LIA message with the type of service indication among the CSCF, and determine calling subscriber's session service type; Query unit 1011 is used for sending query messages to described HLR; Determining unit 1012 according to the affirmation message that receives from described HSS, is determined called subscriber's the login state in the CS territory.
Fig. 6 is the module diagram of embodiment of the HSS of home subscriber of the present invention service;
As shown in the figure, described routing selecting module 102 further comprises:
Route judging unit 1011, according to determined called subscriber the login state in CS territory, calling subscriber's type of service and called subscriber at the login state in IMS territory, judge routing mode;
Route indicating member 1012 according to the routing mode of judging, sends the described calling of LIA message indication CSCF route to CSCF.
Described route indicating member further comprises: the message generation subelement, be used for according to determined routing state, and generate band and be useful on the LIA message that indication is selected in the territory; And message sends subelement, and described LIA message is sent among the CSCF.
It will be appreciated that, CSCF realizes receiving calling subscriber's calling, generation LIR message, reception LIA message and relayed call, it can be by realizing the Implement of Function Module of said method, and, these modules can replace and realize corresponding function with existing I-CSCF or P-CSCF or S-CSCF, although these functional modules be not embodied among this patent,, these all are that those skilled in the art can understand, and do not repeat them here.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc, CD, intelligent platform, switch.
It should be noted that; above-mentioned specific embodiment only is exemplary; under above-mentioned instruction of the present invention, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection scope of the present invention.
It will be understood by those skilled in the art that top specific descriptions just in order to explain purpose of the present invention, is not for restriction the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.

Claims (17)

1. a called subscriber area selecting method is characterized in that, comprising:
Home subscriber server HSS is known calling and the session service type that IMS territory calling subscriber initiates to the called subscriber;
Described HSS determines that the called subscriber is at the login state in IMS territory;
Described HSS inquiry attaching position register HLR determines the login state of called subscriber in the CS territory; And,
Described HSS according to determined called subscriber in login state, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
2. called subscriber's according to claim 1 area selecting method is characterized in that, the described calling of described HSS route further comprises:
Described HSS inquiry network selection policy database;
According to the called subscriber login state, session service type and the called subscriber in IMS territory the login state in CS territory among the network selection policy database selective call land the territory.
3. called subscriber's according to claim 1 and 2 area selecting method, it is characterized in that, according to determined called subscriber during in the described calling of login state route in the CS territory of login state, session service type and the called subscriber in IMS territory, HSS is simultaneously also according to called subscriber's the described calling of terminal type route at described HSS.
4. called subscriber's according to claim 1 area selecting method is characterized in that, described HSS knows that IMS territory calling subscriber comprises to the session service type that the called subscriber initiates:
Session service control function CSCF receives the session request that the calling subscriber initiates in the IMS territory;
Described CSCF generates LIR information and sending with traffic indicator bit to HSS according to above-mentioned session request; And described HSS receives described LIR message and determines the session service type.
5. called subscriber's according to claim 1 area selecting method is characterized in that, described HSS inquiry HLR determines that the login state of called subscriber in the CS territory comprises:
Described HSS sends query messages to described HLR;
Described HLR responds described query messages, returns acknowledge message to described HSS, wherein, has carried the registration status information of called subscriber in the CS territory in the described acknowledge message; And,
Described HSS determines that according to the affirmation message that receives from described HLR the called subscriber is at the login state in CS territory.
6. according to claim 1 or 3 described called subscribers' area selecting method, it is characterized in that, the described calling of described HSS route further comprises:
Described HSS determines the territory of landing of calling;
Described HSS generates with landing the LIA message of territory indicating bit and returns to CSCF; And,
Described CSCF responds described LIA message, and that determine to call out lands the territory, and transfers the call to definite landing among the territory.
7. called subscriber's according to claim 6 area selecting method is characterized in that, the described territory of landing is CS territory or IMS territory or the two territories of IMS/CS.
8. called subscriber's according to claim 7 area selecting method is characterized in that, described CSCF further comprises among transferring the call to the CS territory:
Described CSCF sends the message of indicating with the territory to MGCF MGCF;
Described MGCF receives described message, notifies the called subscriber to answer the call in the CS territory.
9. called subscriber's according to claim 7 area selecting method is characterized in that, described CSCF further comprises among transferring the call to the two territories of IMS/CS:
Described CSCF receives the LIA message of landing the territory indication with the two territories of IMS/CS;
According to above-mentioned LIA message, described CSCF triggers one number service AS.
10. home subscriber server HSS comprises:
Determination module and routing selecting module, wherein,
Described determination module, when IMS territory calling subscriber makes a call to the called subscriber, determine the login state of called subscriber in the IMS territory and calling subscriber's session service type, and inquire about to determine that the called subscriber is at the login state in CS territory to attaching position register HLR;
Described routing selecting module according to the called subscriber in the login state in CS territory, calling subscriber's session service type and the called subscriber login state in the IMS territory, the described calling of route.
11. home subscriber server HSS according to claim 10 is characterized in that, described determination module further comprises:
Information receiving unit be used for to receive the LIA message with the type of service indication among the CSCF, determines calling subscriber's session service type;
Query unit is used for sending query messages to described HLR;
Determining unit according to the affirmation message that receives from described HLR, is determined called subscriber's the login state in the CS territory.
12. home subscriber server HSS according to claim 10 is characterized in that, described routing selecting module further comprises:
The route judging unit, according to determined called subscriber the login state in CS territory, calling subscriber's type of service and called subscriber at the login state in IMS territory, judge routing mode;
The route indicating member according to the routing mode of judging, sends the described calling of LIA message indication CSCF route to CSCF.
13. home subscriber server HSS according to claim 12 is characterized in that, described route indicating member further comprises:
Message generation unit is used for according to determined routing state, generates band and is useful on the LIA message that indication is selected in the territory; And message sending unit sends to described LIA message among the CSCF.
14. a called subscriber domain selecting system comprises home subscriber server HSS and attaching position register HLR, it is characterized in that, described HSS obtains IMS territory calling subscriber and makes a call and the session service type to the called subscriber; Described HSS determines that the called subscriber is at the login state in IMS territory; Described HSS inquiry attaching position register HLR determines the login state of called subscriber in the CS territory; And, described HSS according to determined called subscriber in login state, session service type and the called subscriber in the IMS territory login state in the CS territory, the described calling of route.
15. called subscriber's according to claim 14 domain selecting system, it is characterized in that, further comprise: the network selection policy database, described HSS according to the called subscriber login state, session service type and the called subscriber in IMS territory the login state in CS territory select among the network selection policy database and definite session land the territory.
16. according to claim 14 or 15 described called subscribers' domain selecting system, it is characterized in that, further comprise: CSCF CSCF, described CSCF determines the session service type and sends LIR message to HSS according to the calling subscriber's who receives session request, and determines and make calling transfer to land among the territory according to the LIA message that HSS returns.
17. called subscriber's according to claim 16 domain selecting system, it is characterized in that, further comprise: MGCF MGCF, described CSCF sends the route indication to described MGCF, and MGCS notifies the called subscriber to answer the call in the CS territory according to above-mentioned indication.
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