CN1980288A - Method for obtaining route information between subscriber terminal and server, and use thereof - Google Patents
Method for obtaining route information between subscriber terminal and server, and use thereof Download PDFInfo
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- CN1980288A CN1980288A CN 200610111380 CN200610111380A CN1980288A CN 1980288 A CN1980288 A CN 1980288A CN 200610111380 CN200610111380 CN 200610111380 CN 200610111380 A CN200610111380 A CN 200610111380A CN 1980288 A CN1980288 A CN 1980288A
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Abstract
The method first records route information between calling user terminal of activating call back service and server. Then, when indicating call back, the method sends the call back indication message to the calling user terminal of activating call back service based on the recorded route information. The invention also discloses method for obtaining route information from user terminal to server. In condition of initiating call back from calling users being as multiple terminals, the invention is in use for making call back possible to be returned to initial calling terminal. The invention optimizes services and enriches application scene of service.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and application thereof of obtaining user terminal to the routing iinformation of server.
Background technology
IMS (IP Multimedia Subsystem, IP Multimedia System) is the core subsystem of next generation network (NGN), adopt the bearer path of packet domain for its upper strata control signaling and media delivery, introduce SIP (Session Initiation Protocol, Session initiation Protocol)) agreement is as professional control protocol, utilize simple, the easy expansion of SIP, media combination characteristics easily,, provide abundant multimedia service by business control is separated with carrying control.Main functional entity comprises control user registration among the IMS, CSCF network element CSCF (the Call Session ControlFunction of functions such as session control, CSCF), the application server AS (Application Server) of miscellaneous service logic control function is provided, the home subscriber server HSS (Home Subscriber Server) and being used to of centralized management user contracting data realizes the MGCF entity MGCF (Media Gateway Control Function) with the circuit switching net interconnecting, the user is by current location agent node P-CSCF (Proxy-CSCF, proxy CSCF) insert IMS, session and professional triggering are controlled and are then finished by the home domain service node S-CSCF of its registered place alternately with the business control of AS.
Be realization event notice in the existing Session Initiation Protocol, introduced SUBSCRIBE (subscriptions) and NOTIFY method, the SUBSCRIBE method is used for subscription, and the NOTIFY method is used to transmit the notice of any variation of an incident.So-called event notice is exactly, and user or resource are initiated to subscribe to other resources, and owing to the latter has the former interested incident, the former can receive about the state of this incident and the notice of any variation afterwards.
At CCBS (Completion of Communication sessions to Busy Subscriber) is in the call back on busy service, calling subscriber A dials called subscriber B, if the party B-subscriber is busy, call back on busy service just is activated, system will monitor the state of called subscriber B afterwards, if system can notify user A after the user B free time, initiate callback by user A to user B, user B replys back calling and called normal talking, and business is finished.
The information interaction of existing CCBS business as shown in Figure 1, CCBS service logic and formation all are kept on the AS, Calling Side AS is introduced at initial call establishment stage, preserves the information such as activation of service situation, service queue of caller; Callee side AS is introduced into when activation of service, preserves the called service queuing message; Calling Side AS subscribes to called state to callee side AS, and safeguards queuing message.In the description of following steps, with Calling Side AS user AS (A) expression, callee side AS user AS (B) expression.
Step 56～62: terminal A is initiated to the callback of user B, and this is a callback call can to carry callback indication expression in the Invite message, behind the calling and called normal talking, and professional normal termination.After the service ending, Calling Side AS deletes the business information on this AS and notifies callee side AS deletion associated queue information, uses CCBS incident bag, wherein carries calling number and quene state (queue=false, expression is deleted user A from formation).This process and 15～18 steps are similar, do not list among the figure, but should give unnecessary details again.
At existing C CNR (Completion of Communication on no reply) is in the no response call back service, calling subscriber A dials called subscriber B, user B does not reply, no response call back service promptly is activated, and the back network discharges this calling activating successfully, and user B initiates the once conversation back free time, this moment notifications users A, user A initiates callback to user B, and user B replys back calling and called normal talking, and business is finished.The callback flow process of CCNR business and above-mentioned CCBS service class are seemingly introduced here no longer in detail.
The operation flow implementation of more detailed CCBS, CCBR can be referring to the current newest standards draft of describing CCBS, CCNR business among the ETSI TISPAN.
Along with the continuous development of communication service, operator allows a plurality of registration terminals to share the unique user identity, and described user identity is exactly a public subscriber identification, also is usually said telephone number.For example, certain user has a portable terminal and a fixed terminal, and these two terminals are externally used same telephone number (being public subscriber identification).Suppose that this caller multi-terminal user activates call back service when using its portable terminal,, wish that naturally application server notifies this portable terminal to carry out callback so as called subscriber after the free time.
But, according to the implementation procedure of aforementioned existing call back service as can be known, after call back service is activated, application server carries out callback according to calling subscriber's public subscriber identification subscriber call terminal, and described calling subscriber's portable terminal is identical with the public subscriber identification that fixed terminal has, therefore application server is when subscriber call carries out callback, can't accurately navigate to this calling subscriber's portable terminal, cause existing call back service implementation method can't be applied to the situation of caller multiple terminals thus.
Summary of the invention
The problem to be solved in the present invention provides a kind of method and application thereof of obtaining user terminal to the routing iinformation of server, and this method can satisfy the environment for use of caller multiple terminals.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions:
A kind of by obtaining the method that routing iinformation carries out call subscriber terminal location, may further comprise the steps: the routing iinformation of record from the call subscriber terminal that activates call back service to server; When carrying out the callback indication, the callback Indication message is sent to the call subscriber terminal of activation call back service according to the routing iinformation of above-mentioned record.
Preferably, described method also comprises: by to network registry unit subscription registration information, obtain the routing iinformation from the call subscriber terminal that activates call back service to server.
Preferably, described detailed process to network registry unit subscription registration information is: after call back service activates, in setting up the message interaction process of session, know the public subscriber identification of call subscriber terminal, according to described public subscriber identification to network registry unit subscription registration information; Or after the user terminal of signatory call back service carries out network registry, know the public subscriber identification of call subscriber terminal by third-party registration message, according to described public subscriber identification to network registry unit subscription registration information.
Preferably, described method also comprises: by third-party registration message, obtain the routing iinformation from the call subscriber terminal that activates call back service to server.
Preferably, described method also comprises: if the call subscriber terminal of described activation call back service re-registers, then upgrade the routing iinformation record about this call subscriber terminal.
Preferably, described method also comprises: by to network registry unit subscription registration information or third-party registration, obtain the private user identity of the call subscriber terminal that activates call back service.
Preferably, the detailed process of described more new routing information record comprises: according to the public subscriber identification and the private user identity of the call subscriber terminal that re-registers, index goes out original routing iinformation record of this call subscriber terminal that has existed; Current routing iinformation after re-registering according to this call subscriber terminal upgrades original routing iinformation record that index goes out.
Preferably, described routing iinformation is user terminal contact address or GRUU.
Preferably, described routing iinformation also comprises public subscriber identification, calling conversation control unit address, network insertion element address and/or the preference setting of user terminal.
A kind of method of obtaining user terminal to the routing iinformation of server: server is to the network registry unit of user terminal subscription registration information; The network registry unit reports the log-on message of current described user terminal to server, and described log-on message comprises routing iinformation at least; Server obtains the routing iinformation of described user terminal to server according to the log-on message that receives.
Preferably, described method also comprises: when user terminal re-registered, described network registry unit reported the routing iinformation of the user terminal of renewal to server.
Preferably, the detailed process of described subscription registration information comprises: server is known the public subscriber identification of user terminal in setting up the message interaction process of session, according to described public subscriber identification to network registry unit subscription registration information; Or after user terminal carried out network registry, server was known the public subscriber identification of user terminal by third-party registration message, according to described public subscriber identification to network registry unit subscription registration information.
Preferably, described routing iinformation comprises user terminal contact address or GRUU at least.
Preferably, described routing iinformation also comprises the public subscriber identification of user terminal, private user identity, calling conversation control unit address, network insertion element address and/or the preference setting of user terminal.
A kind of method of obtaining user terminal to the routing iinformation of server after the registration message of user terminal is received in the network registry unit, sends registration message to server, and described registration message comprises the routing iinformation of active user's terminal to server at least; Server obtains the routing iinformation of described user terminal to server according to the registration message that receives.
Preferably, described routing iinformation comprises user terminal contact address or GRUU at least.
Preferably, described routing iinformation also comprises the public subscriber identification of user terminal, private user identity, calling conversation control unit address, network insertion element address and/or the preference setting of user terminal.
Above technical scheme as can be seen, in the present invention, activate the routing iinformation of the calling terminal of call back service owing to write down to server, make when the indication callback, can the callback Indication message accurately be sent to that call subscriber terminal that activates call back service according to the routing iinformation that has write down.Thus, technical solution of the present invention is applicable to the situation of calling subscriber multiple terminals, and which terminal what activate call back service is, which terminal server just can notify initiate callback.
Description of drawings
Fig. 1 is the information interactive process schematic diagram of the call back on busy service CCBS of prior art;
Fig. 2 is the universal network model structure figure of the inventive method;
Fig. 3 is the information interactive process schematic diagram of first preferred embodiment of the inventive method;
Fig. 4 is the schematic flow sheet of the present invention's first preferred embodiment;
Fig. 5 is the information interactive process schematic diagram of second preferred embodiment of the inventive method;
Fig. 6 is the schematic flow sheet of the present invention's second preferred embodiment;
Fig. 7 is the information interactive process schematic diagram of the 3rd preferred embodiment of the inventive method;
Fig. 8 is the schematic flow sheet of the present invention's the 3rd preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, will carry out comparatively detailed explanation to each preferred embodiment of the present invention.
IMS of the present invention territory obtains the method for server to the routing iinformation of terminal, the universal network model that it relates to as shown in Figure 2, it comprises: the network insertion unit: the user is accessed to carrier network to carry out processing such as authentication registration authentication.In IMS, the network insertion unit is called as P-CSCF.Calling conversation control unit CSCF: for the user provides functions such as calling control, route continue, it can be toggled to calling different Service Control Units.In IMS, calling conversation control unit is called as S-CSCF.Service Control Unit (application server a kind of): for the user provides miscellaneous service logic control function, be host's execution environment of miscellaneous service, control unit provides the processing of call back services such as CCBS among the present invention.In IMS, Service Control Unit is called as AS.
The inventive method is that Service Control Unit is preserved the routing iinformation from the call subscriber terminal to the Service Control Unit, in the sip message of indication callback, carry during Service Control Unit indication callback preserve in the Service Control Unit routing iinformation, the callback Indication message will send on the corresponding call subscriber terminal.
Like this concerning multi-terminal user, a though shared public subscriber identification, but each terminal can be distinguished by its unique private user identity, when user terminal during to network registry, also can obtain contact address unique, that can be used to be routed addressing, obviously, if Service Control Unit need can to obtain the contact address of the user terminal of callback, just can realize the demand of callback to designated terminal.
On the surface, when call back service is activated, the relevant information of the calling that Service Control Unit just can have been initiated by call subscriber terminal has before this obtained the contact address of user terminal, but as preceding described, because distributing during to network registry at user terminal, the contact address obtains, each registration all might obtain different contact addresses, and during after the calling subscriber activates call back service, beginning the callback calling subscriber to network, user terminal might change its contact address because of re-registering, roam as user terminal, user terminal restarts after closing etc., therefore one of key technology of the inventive method is exactly that user terminal is when network is initiated registration, how Service Control Unit gets access to the current contact address of user terminal, below by three different embodiment this implementation procedure is described, and illustrate simultaneously how call back service realizes.
Need to prove, information interactive process schematic diagram of being done among following each embodiment of the present invention and corresponding flow process diagram and explanatory note only are the explanation that outstanding key technology of the present invention is done, do not represent a complete calling and professional control flow, do not have all possible branch of limit flow process yet.
The embodiment one of the inventive method:
Service Control Unit (AS) is after call back service activates successfully, write down in this calling procedure the routing iinformation of (AS) from the call subscriber terminal to the Service Control Unit, subscribe to calling subscriber's log-on message simultaneously to the calling conversation control unit (S-CSCF) of this user's correspondence.
When terminal re-register, when log-on message changes, calling conversation control unit (S-CSCF) is notified to Service Control Unit (AS) to up-to-date log-on message, Service Control Unit (AS) obtains the current routing iinformation of terminal and preserves from log-on message.In the sip message of indication callback, carry the routing iinformation of preserving in the Service Control Unit (AS) during Service Control Unit (AS) indication callback, the callback Indication message will send on the corresponding calling terminal, see also Fig. 3, it is the information interactive process schematic diagram of first embodiment of the invention.
1～4, the user initiates a normal SIP calling.
5, called subscriber busy, callee side returns 486busy.
6～8, Service Control Unit (AS) sends 183 session progress to calling terminal.
9～10, Service Control Unit (AS) is received after the business registration request of caller, sends SUBSCRIBE to callee side corresponding service control unit, subscribes to the CCBS business.Callee side returns 200 OK.
Described Service Control Unit (AS) is according to the relevant routing iinformation of the preservation of the content in the INVITE from the calling terminal to the Service Control Unit, comprise Recorded-Route header field in the INVITE ' message and the information in the Contact header field, the perhaps information in the Via header field, preserve the address of calling conversation control unit (S-CSCF) and network insertion unit A (P-CSCF), calling terminal contact address and its public subscriber identification, wherein, the address that calling conversation control unit and network insertion unit A are arranged in the Record-Route header field, the contact address that calling terminal is arranged in the Contact header field then has calling conversation control unit and the address of network insertion unit A and the contact address of calling terminal simultaneously in the Via header field; The public subscriber identification of calling terminal comes from the P-Asserted-Identity header field.
So far, Service Control Unit of the present invention (AS) has activated calling subscriber's call back service, public subscriber identification by calling and called can identify a callback, described Service Control Unit can also distribute a callback sign for current callback, sends to the callee side network element by SUBSCRIBE message.
11～13, Service Control Unit (AS) sends 486 busy to calling terminal.
14～15, Service Control Unit (AS) sends SUBSCRIBE booking reader's log-on message to calling conversation control unit (S-CSCF).Calling conversation control unit (S-CSCF) response 200 OK.Carry extended registration message event bag reginfo in the SUBSCRIBE subscribe message, require the signaling paths (being routing iinformation) of user terminal registration to change, informing business control unit (AS), exemplary contents is:
Event：reginfo
16～17, calling conversation control unit (S-CSCF) is accepted subscription, send the log-on message that NOTIFY reports this moment, public subscriber identification sip:joe@example.com comprising the calling subscriber, the contact address sip:joe@pcl.example.com of calling terminal, the private user identity sip:joe_private@example.com of calling terminal, network insertion unit A (P-CSCF) the address sip:pcscfl.example.com of calling terminal registration, Service Control Unit (AS) response 200 OK also write down these log-on messages, as can be seen, in fact these log-on messages have comprised the current routing iinformation of user terminal.
Need to prove that the information of above-mentioned record will have more the private user identity of a terminal than (step 9～10) of writing down previously, this is because the private user identity of terminal is distinguished each terminal will be used for many registration terminals of user the time.
Because calling conversation control unit can all report up the log-on message of all registered terminals of calling subscriber, Service Control Unit (AS) need find out the log-on message of the registration terminal that has activated call back service according to the public subscriber identification that writes down previously and terminal contact address, and this also is the reason that Service Control Unit will write down the terminal contact address of having activated call back service in step 9～10.Because this is the synchronization notice message after accepting to subscribe to, the register command path of user terminal does not change, and therefore Service Control Unit this moment (AS) also can only be preserved the private user identity of calling terminal.
The example of the foregoing that carries in the described NOTIFY of the inventive method is as follows:
Event:reginfo
<？xml?version＝″1.0″？>
<reginfo?xmlns＝″urn:ietf:params:xml:ns:reginfo″
xmlns?path＝″urn:ietf:params:xml:ns:pathinfo″
version＝″0″state＝″full″>
<registration?aor＝″sip:joe@example.com″id＝″a7″
state＝″active″>
<contact?id＝″76″state＝″active″event＝″registered″
duration-registered＝″0″>
<uri>sip:joe@pcl.example.com</uri>
<path:p-uri>sip:joe_private@example.com</p-uri>
<path:path-uri>sip:pcscfl.example.com</path-uri>
</contact>
</registration>
</reginfo>
18～21, the middle in action Network Access Point of calling terminal changes, and initiates registration by another network insertion unit B (P-CSCF), calling conversation control unit (S-CSCF) response 200 OK.At this moment, variation has all taken place in the contact address of calling terminal and P-CSCF address.
22～23, calling conversation control unit (S-CSCF) sends the log-on message that NOTIFY reports renewal, comprising calling subscriber's public subscriber identification sip:joe@example.com, private user identity sip:joe_private@example.com and the contact address sip:joe@pc2.example.com of the calling terminal after the renewal and network insertion unit B (P-CSCF) the address sip:pcscf2.example.com of calling terminal registration of calling terminal.Service Control Unit (AS) response 200 OK.
As can be seen, this moment, the contact address of terminal changed, Service Control Unit (AS) will go out the user terminal that has write down the callback routing iinformation according to public subscriber identification in these log-on messages and private user identity index, and upgrade relevant routing iinformation.
Though the terminal private user identity in the inventive method does not belong to the direct routing iinformation of this terminal to Service Control Unit (AS), but its constant identify label that is registration terminal, must search heavily the routing iinformation that has changed after the registration by it, because the contact address (routing iinformation) of terminal all may change when each registration, therefore must come index to go out and to be updated the user terminal of preserving routing iinformation by private user identity.
The example of the relevant parameter that carries in the Notify message in the inventive method is as follows:
Event:reginfo
<？xml?version＝″1.0″？>
<reginfo?xmlns＝″urn:ietf:params:xml:ns:reginfo″
xmlns?path＝″urn:ietf:params:xml:ns:pathinfo″
version＝″1″state＝″partial″>
<registration?aor＝″sip:joe@example.com″id＝″a7″
state＝″active″>
<contact?id＝″76″state＝″active″event＝″registered″
duration-registered＝″0″>
<uri>sip:joe@pc2.example.com</uri>
<path:p-uri>sip:joe_private@example.com</p-uri>
<path:path-uri>sip:pcscf2.example.com</path-uri>
</contact>
</registration>
</reginfo>
When 24, the called subscriber was idle, the callee side network element sent NOTIFY to Service Control Unit (AS) and reports this state, carries the calling and called public subscriber identification in the message, can also carry the callback sign of distributing before this.
25～29, described Service Control Unit (AS) is according to the calling and called public subscriber identification, also can identify the callback of finding needs to be employed according to callback, and index goes out its current routing iinformation, sends REFER to this calling terminal and notifies it to initiate callback, terminal response 200 OK.REFER message is carried out route according to the routing iinformation of preserving in the Service Control Unit (AS), this route information table is understood the signaling paths of calling terminal, comprise calling conversation control unit address, network insertion unit B address, calling terminal contact address, then REFER message road is sent on the calling terminal of registration call back service through calling conversation control unit, network insertion unit B.The relevant parameter example of carrying in the described REFER message is as follows:
Refer:sip:joe@pc2.example.com
Route:<sip:scscf.example.com；lr>，<sip:pcscf2.example.com；lr>
To:sip:joe@.example.com
30～33, described calling terminal is initiated callback.After the callback success, the routing iinformation that described Service Control Unit (AS) deletion is preserved is cancelled the subscription to the calling terminal log-on message simultaneously.
More than describe the information interactive process schematic diagram of the present invention's first preferred embodiment in detail, because stressing more details, information interaction describes, therefore not the logic thinking that is easy to find out this embodiment, for this reason, please continue to consult Fig. 4, it is the schematic flow sheet of the present invention's first preferred embodiment.In the concrete introduction of this flow process, logical relation before and after will laying particular emphasis on for the prior art part relevant with technical solution of the present invention, will be given unnecessary details no longer in detail.
Step 410: after certain call subscriber terminal activates the call back service success, AS writes down the routing iinformation from this call subscriber terminal to Service Control Unit in this calling procedure, at least the public subscriber identification and the contact address that comprise this call subscriber terminal in the described routing iinformation can also comprise the access network element P-CSCF and the S-CSCF address of this call subscriber terminal certainly.
Step 420:AS subscribes to this calling subscriber's log-on message according to the public subscriber identification that obtains in the step 410 to calling conversation control unit (S-CSCF).Described log-on message comprises the routing iinformation of call subscriber terminal to AS at least.In other words, AS is minimum need to subscribe to routing iinformation to S-CSCF, also can subscribe to the log-on message that comprises routing iinformation.Need explanation, though AS is to S-CSCF subscription registration information in the present embodiment, but S-CSCF should be interpreted as limitation of the present invention, as long as the network registry that certain network element can the process user terminal, this network element (can be called the network registry unit in logic) just can provide log-on message for AS.This explanation is equally applicable to each later embodiment.
After step 430:S-CSCF accept to subscribe to, report the log-on message of current this call subscriber terminal to AS, AS gives record.The log-on message that this moment, AS reported comprises the public subscriber identification of call subscriber terminal at least, and private user identity and contact address can comprise P-CSCF and S-CSCF address in addition.Because this is the synchronization notice message after subscribing to, the log-on message path of call subscriber terminal (contact address and access P-CSCF address etc.) all also do not change, so this steps A S can only write down the private user identity of this call subscriber terminal.
Need explanation, because AS need handle all user terminals in the net, so it records the routing iinformation of a lot of call subscriber terminals.Especially under the situation of calling subscriber multiple terminals (public subscriber identification is identical, private user identity is different), because AS is according to public subscriber identification subscription registration information, so S-CSCF can report to AS to the log-on message of each registration terminal of this calling subscriber's correspondence.
So according to step 430 record private user identity the time, must find that affiliated user terminal of this private user identity.Particularly, public subscriber identification and call subscriber terminal contact address in the log-on message that AS reports according to S-CSCF in the step 430, index goes out that corresponding routing iinformation record in all user terminal routing iinformations of its record, the corresponding call subscriber terminal of this routing iinformation record is exactly that call subscriber terminal that has activated call back service, simultaneously, that private user identity that carries in step 430 log-on message is exactly that above-mentioned call subscriber terminal owns.At this moment, AS has just obtained and has write down routing iinformation and the private user identity that activates the call subscriber terminal of call back service.
Step 440: re-register if activate the call subscriber terminal of call back service; the log-on message of S-CSCF after AS reports renewal; described log-on message comprises the public subscriber identification of call subscriber terminal at least; private user identity and contact address; certainly, the address that also comprises access network element P-CSCF usually.Because this call subscriber terminal re-registers, so its contact address changes, and the address of access network element P-CSCF also may change.
Step 450:AS is according to public subscriber identification and private user identity in the above-mentioned renewal post-registration information, index goes out to write down the call subscriber terminal of callback routing iinformation, upgrade the contact address in its original routing iinformation record, also may comprise the address of P-CSCF;
Step 460: when called user terminal after the free time, AS is according to the current routing iinformation record indication callback of the call subscriber terminal that activates call back service.Particularly, during AS indication callback, in the conversation launch protocol message of indication callback, carry the current routing iinformation of the call subscriber terminal correspondence of described activation call back service, notify this call subscriber terminal to initiate callback.Generally speaking, AS can pass through callback of calling and called public subscriber identification, also can distribute a callback sign for current each callback.
The embodiment two of the inventive method:
Service Control Unit (AS) obtains the terminal public subscriber identification by third-party registration when endpoint registration, Service Control Unit (AS) is promptly subscribed to calling subscriber's log-on message to calling conversation control unit (S-CSCF), and obtains user's information such as private user identity, terminal contact address and network insertion element address from log-on message.Be noted that, Service Control Unit in the context is to the address of the Service Control Unit of implementing control during according to the call back service that realizes, because calling and called are all to there being Service Control Unit, caller or called Service Control Unit all might be done Service Control Unit in theory, so this address that directly adopts in the various embodiments of the present invention description may be caller or the called service control unit that works.
Described Service Control Unit (AS) is after call back service activates, in the terminal routing iinformation that has write down, identify the terminal of activating service by the contact address of terminal, if terminal re-registers, when log-on message changes, calling conversation control unit (S-CSCF) always is notified to Service Control Unit (AS) to up-to-date log-on message.In the sip message of indication callback, carry during Service Control Unit (AS) indication callback preserve in the Service Control Unit routing iinformation, the callback Indication message will send on the corresponding calling terminal, see also Fig. 5, it is the information interactive process schematic diagram of second embodiment of the invention.
Specific explanations is as follows:
1～4, described calling terminal is initiated registration by network insertion unit (P-CSCF), calling conversation control unit (S-CSCF) response 200 OK.
5～6, according to the triggering rule on the calling conversation control unit (S-CSCF), the user's of signatory call back service terminal is after calling conversation control unit (S-CSCF) succeeds in registration, and calling conversation control unit (S-CSCF) generates a third-party registration request REGISTER and mails to Service Control Unit (AS).The public subscriber identification of carried terminal in the REGISTER message.Service Control Unit returns 200 OK, and preserves the public subscriber identification of terminal, and wherein public subscriber identification is from the To header field of REGISTER request.
7～8, third-party registration success, Service Control Unit (AS) has obtained the user's of signatory call back service public subscriber identification, to calling conversation control unit (S-CSCF) booking reader's log-on message, carry extended registration message event bag reginfo among the subscribe message SUBSCRIBE immediately.
9～10, calling conversation control unit (S-CSCF) is accepted subscription, send the log-on message that NOTIFY reports this moment, comprising calling subscriber's public subscriber identification sip:joe@example.com, the contact address sip:joe@pcl.example.com of calling terminal, the private user identity sip:joe_private@example.com of calling terminal, network insertion unit A (P-CSCF) the address sip:pcscfl.example.com of calling terminal registration, Service Control Unit (AS) response 200 OK also write down these log-on messages.The example of the relevant parameter that carries in the NOTIFY can be referring to step 16～17 of embodiment one.
After this, as long as heavily registration has taken place user terminal, calling conversation control unit (S-CSCF) all can report current up-to-date log-on message to Service Control Unit (AS), and detailed process can be participated in step 18～23 of embodiment one.
If making a call to meet, user terminal hurries, call back service is activated, owing to always preserved the routing iinformation behind active user's endpoint registration in the Service Control Unit (AS), Service Control Unit (AS) activates the terminal that identifies activating service in the terminal routing iinformation that only need write down by the contact address of terminal the back in call back service, therefore after the called free time, the indication callback sip message in can carry the current preservation of Service Control Unit routing iinformation, so that the callback Indication message sends on the corresponding calling terminal, detailed process can (customer call be met busy referring to the step 1 in the foregoing description one～13, call back service is activated), step 24～34 (called free time, call back service is used).
More than describe the information interactive process schematic diagram of the present invention's second preferred embodiment in detail, because stressing more details, information interaction describes, therefore not the logic thinking that is easy to find out this embodiment, therefore, please continue to consult Fig. 6, it is the schematic flow sheet of the present invention's second preferred embodiment.In the concrete introduction of this flow process, logical relation before and after will laying particular emphasis on for the prior art part relevant with technical solution of the present invention, will be given unnecessary details no longer in detail.
Step 610: the call subscriber terminal of signatory call back service carries out network registry to calling conversation control unit CSCF (mainly being P-CSCF and S-CSCF);
Step 620: after the network registry success, S-CSCF generates a third-party registration request and mails to Service Control Unit AS, comprises the public subscriber identification of this call subscriber terminal in the described third-party registration request at least; (Service Control Unit is herein to the abstractdesription of AS, and Service Control Unit refers in particular to the AS that handles call back service)
Step 630:AS subscribes to this calling subscriber's log-on message according to the public subscriber identification that obtains in the step 620 to S-CSCF, and described log-on message comprises routing iinformation at least.
Step 640:S-CSCF reports log-on message at this moment to Service Control Unit after accepting to subscribe to, and described log-on message comprises the public subscriber identification of call subscriber terminal at least, contact address and private user identity.Need explanation, owing to be the subscription of carrying out according to public subscriber identification, therefore for the situation of calling subscriber multiple terminals, S-CSCF can report AS with the log-on message of this each terminal of calling subscriber, wherein promptly comprise that user terminal log-on message that has activated call back service, also comprise the user terminal that does not activate call back service.
Step 650: if call subscriber terminal re-registers, the log-on message of S-CSCF after AS reports renewal, AS upgrades the routing iinformation of each call subscriber terminal in view of the above, normally more contact address in the new routing information and the address of P-CSCF.Hence one can see that, write down the current routing iinformation of the user terminal of each signatory call back service among the AS.Need explanation, in new routing information process more, need distinguish each call subscriber terminal according to private user identity, because same user terminal is after re-registering, its contact address and access network element P-CSCF address generally can change, and its private user identity can not change.
Step 660: after certain call subscriber terminal activated the call back service success, AS identified that call subscriber terminal that activates call back service according to the contact address of this call subscriber terminal in each the user terminal routing iinformation that has write down.
Step 670: when called user terminal after the free time, AS is according to the current routing iinformation record indication callback of the call subscriber terminal that activates call back service.Particularly, AS is when the indication callback, in the Session initiation Protocol sip message of indication callback, carry the current routing iinformation of the call subscriber terminal correspondence of described activation call back service, and then the callback Indication message is sent to corresponding calling terminal, notify it to initiate callback.
As can be seen, implement one and be that with the main distinction of embodiment two described Service Control Unit (AS) initiates different to triggering opportunity of the subscription of user's registration information, among the embodiment one, after call back service activates, trigger and subscribe to; Among the embodiment two, after the third-party registration success, trigger and subscribe to.Adopt the mode of embodiment one, AS only subscribes to the user's registration information that has activated call back service, and the mode of employing embodiment two, AS need preserve the user's registration information of all call back services of having contracted, so the amount of information that embodiment one needs to preserve is less than embodiment two.
The embodiment three of the inventive method:
Carry out third-party registration to Service Control Unit (AS) during the user's of signatory call back service endpoint registration, report the routing iinformation of from the call subscriber terminal to the Service Control Unit (AS), Service Control Unit (AS) is preserved these information.Service Control Unit (AS) identifies the terminal of activating service in the terminal routing iinformation that has write down by the contact address of terminal after call back service activates.When terminal re-register, when log-on message changes, the information that Service Control Unit (AS) is preserved according to the content update of registration message.In the sip message of indication callback, carry during Service Control Unit indication callback preserve in the Service Control Unit (AS) routing iinformation, the callback Indication message will send on the corresponding calling terminal, see also Fig. 7, it is the information interactive process schematic diagram of third embodiment of the invention.
Specific explanations is as follows:
1～4, described calling terminal is initiated registration by network insertion unit (P-CSCF), calling conversation control unit (S-CSCF) response 200 OK.
5～6, according to the triggering rule on the calling conversation control unit (S-CSCF), the user's of signatory call back service terminal is after calling conversation control unit (S-CSCF) succeeds in registration, and calling conversation control unit (S-CSCF) generates a third-party registration request REGISTER and mails to Service Control Unit (AS).Expansion header field Contact or other header field or newly-increased header field carry private user identity joe_private@example.com, the terminal contact address joe@pcl.example.com of S-CSCF address scscf.example.com, terminal and the address pcscfl.example.com of access control unit A (P-CSCF) in the REGISTER message.Service Control Unit returns 200 OK, and preserves public subscriber identification, private user identity, terminal contact address, P-CSCF address and the S-CSCF address of terminal.To this step, Service Control Unit of the present invention (AS) has been preserved contracted user's terminal to the routing iinformation of Service Control Unit and the private user identity of terminal.
The relevant parameter example of carrying in the described REGISTER message is as follows:
From:sip:scscf.example.com
To:sip:joe@.example.com
Contact:sip:scscf.example.com；p-uri＝sip:
joe_private@example.com；path-uri＝sip:pcscfl.example.com；
uri＝sip:joe@pcl.example.com
7～10, the user initiates a normal SIP calling.
11, called subscriber busy, callee side return 486 busy.
12～14, Service Control Unit (AS) sends 183 session progress to calling terminal.
15～16, Service Control Unit (AS) is received after the business registration request of caller, sends SUBSCRIBE to callee side corresponding service control unit, subscribes to the CCBS business.Callee side returns 200 OK.
Described Service Control Unit (AS) can obtain the public subscriber identification and the terminal contact address of calling terminal from INVITE, and goes out the route record of the terminal of activating service according to this two addresses index in the routing iinformation of having preserved.
17～19, Service Control Unit (AS) sends 486 busy to calling terminal.
20～23, the middle in action Network Access Point of calling terminal changes, and initiates registration by another network insertion unit B (P-CSCF), calling conversation control unit (S-CSCF) response 200 OK.At this moment, variation has taken place in the contact address of calling terminal and P-CSCF.
24～25, calling conversation control unit (S-CSCF) generates a third-party registration request REGISTER and mails to Service Control Unit (AS), carry new routing iinformation, comprising calling subscriber's public subscriber identification sip:joe@example.com, the private user identity sip:joe_private@example.com of calling terminal, and the contact address sip:joe@pc2.example.com of the calling terminal after upgrading, network insertion unit B (P-CSCF) the address sip:pcscf2.example.com and the calling conversation control unit S-CSCF address of calling terminal registration.Service Control Unit (AS) response 200 OK.Service Control Unit (AS) will index the user terminal that has write down the callback routing iinformation according to public subscriber identification in these log-on messages and private user identity, and upgrade relevant routing iinformation.
The relevant parameter example that REGISTER of the present invention carries is as follows:
From:sip:scscf.example.com
To:sip:joe@.example.com
Contact:sip:scscf.example.com；p-uri＝sip:
joe_private@example.com；path-uri＝sip:pcscf2.example.com；
uri＝sip:joe@pc2.example.com
The process that follow-up business control unit (AS) indication callback and calling terminal make a call no longer specifically describes here with embodiment 1.After the callback success, behind described Service Control Unit (AS) the deletion activation of service to the sign of this terminal routing iinformation.
More than describe the information interactive process schematic diagram of the present invention's the 3rd preferred embodiment in detail, because stressing more details, information interaction describes, therefore not the logic thinking that is easy to find out this embodiment, therefore, please continue to consult Fig. 8, it is the schematic flow sheet of the present invention's the 3rd preferred embodiment.In the concrete introduction of this flow process, logical relation before and after will laying particular emphasis on for the prior art part relevant with technical solution of the present invention, will be given unnecessary details no longer in detail.
Step 810: the call subscriber terminal of signatory call back service carries out network registry to calling conversation control unit CSCF (mainly being P-CSCF and S-CSCF).
Step 820: after the network registry success, S-CSCF generates a third-party registration request and mails to AS, comprises the public subscriber identification of this call subscriber terminal, current contact address and private user identity in the described third-party registration request at least; AS preserves above-mentioned information.
Step 830: after call back service is activated,, in each user terminal routing iinformation that AS has write down, identify the call subscriber terminal that activates call back service according to this public subscriber identification and contact address of activating the call subscriber terminal of call back service.
Step 840: if call subscriber terminal re-registers, S-CSCF generates a third-party registration request and mails to AS, comprises the public subscriber identification of this call subscriber terminal in the described third-party registration request at least, private user identity and current contact address.Can comprise access network element P-CSCF address in addition.Usually after user terminal re-registered, its contact address and access network element P-CSCF address may change.
Step 850: according to public subscriber identification and private user identity in the described third-party registration request of step 840, index goes out to write down the call subscriber terminal of call back service routing iinformation, upgrades contact address and P-CSCF in its routing iinformation.If find that through behind the index user terminal that re-registers does not activate call back service, AS both can upgrade the routing iinformation record of this call subscriber terminal so, also can not upgrade.
Step 860: when called user terminal after the free time, AS is according to the current routing iinformation record indication callback of the call subscriber terminal that activates call back service.During AS indication callback, can in the Session initiation Protocol sip message of indication callback, carry the current routing iinformation of the call subscriber terminal correspondence of described activation call back service, and then the callback Indication message sends to corresponding calling terminal, notify it to initiate callback.
Sum up above-mentioned three embodiment, as can be seen, though what embodiments of the invention provided is the implementation procedure of call back service, but as preceding analysis, one of key point of the inventive method is exactly how Service Control Unit (AS) gets access to the current routing iinformation of user terminal to Service Control Unit, this routing iinformation comprises calling conversation control unit address, network insertion element address, user terminal contact address, and three different embodiment provide is exactly the method that obtains above-mentioned routing iinformation, can reduce dual mode:
1, Service Control Unit (AS) is to calling conversation control unit (S-CSCF) the subscription registration information of endpoint registration, and calling conversation control unit (S-CSCF) reports the routing iinformation of current terminal to Service Control Unit (AS).When terminal re-registered, calling conversation control unit (S-CSCF) reported the routing iinformation of the terminal of renewal to Service Control Unit (AS).
Concrete, terminal is after succeeding in registration on the calling conversation control unit, calling conversation control unit is initiated third-party registration to Service Control Unit, Service Control Unit is received registration message, send SIP SUBSCRIBE subscribe message to calling conversation control unit, carry log-on message incident bag in the message, calling conversation control unit sends to Service Control Unit and sends SIP NOTIFY notification message, and carried terminal is to the routing iinformation of Service Control Unit in the message.Service Control Unit also can be set up the address that sip message in the process obtains calling conversation control unit in mutual in session, initiates to subscribe to Session Control Unit afterwards.
Wherein, log-on message incident bag is used to subscription registration user's related registration information, comprises routing iinformation, and log-on message incident bag can be the incident bag of a new expansion, also can be the expansion use to the registration event package (reg) of existing standard definition.In addition, Service Control Unit also can only only be subscribed to described routing iinformation to calling conversation control unit, uses one to expand the incident bag and represent subscription to route information.
2, after calling conversation control unit (S-CSCF) is received the registration message of terminal, send registration message, carry the routing iinformation of current terminal in the described registration message to Service Control Unit (AS) to Service Control Unit.When terminal re-registered, calling conversation control unit (S-CSCF) reported the routing iinformation of the terminal of renewal to Service Control Unit (AS) by third-party registration.
Above-mentioned routing iinformation is except can being the contact address etc. of aforesaid terminal, can also be GRUU (the globally routable user agent uniform resource identifier of terminal, whole world routable user-agency uniform resource identification), under the situation of user multiple terminals, GRUU also can be used to route to the terminal of GRUU appointment.Further, above-mentioned routing iinformation comprises the preference setting (being terminal capability) of terminal, supports abilities such as video, short message such as terminal, similarly, the preference setting of terminal also can be used to route to the terminal that preference is provided with appointment, as supporting the terminal of video capability.Generally speaking, server can but be not limited to particular message is routed to the user terminal of appointment by the routing iinformation of following several modes, the described routing iinformation of one comprises user terminal contact address and public subscriber identification at least, its two described routing iinformation comprises GRUU at least, its three described routing iinformation comprises the public subscriber identification of user terminal at least, the private user identity of user terminal, the address of S-CSCF address and P-CSCF, though described private user identity generally is not used in direct route, but be used for index so that new routing information more, therefore, also can be referred to as a kind of in the indirect route information.User's preference parameter can be used for the selection of route.
Therefore the various embodiments described above of the present invention can be summed up as and a kind ofly obtain the method for terminal to the routing iinformation of Service Control Unit by Service Control Unit, thereby technical conceive of the present invention is not limited in the application of each call back service, can also be applied in other business that need obtain routing iinformation, as the aforementioned to terminal route of specifies preferences setting/ability etc., in other words, as long as need in the technology of designated terminal route, can use technical scheme provided by the invention substantially, described terminal promptly can be the aforesaid calling terminal that is used for callback, also can be common calling terminal and terminal called, described routing iinformation can directly be used for route by Service Control Unit, also can be used for route indirectly, for example as a kind of decision condition (as private user identity) etc.In addition, the Service Control Unit that is suitable for the present invention program is not only aforesaid Service Control Unit, and can be IMS application server any type, that need to use routing iinformation, for example short message service server.
Above-mentioned acquisition server provided by the present invention can be used for realizing that to the method for the routing iinformation of calling terminal caller is that initial calling terminal is arrived in callback when initiating callback under the situation of multiple terminals.This technology can be equally applicable to other call back services such as CCNR.Therefore can optimize professional user experience, the application scenarios of abundant business.
Should be understood that above-mentioned description at specific embodiment is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims; The technical staff who is familiar with field of the present invention should understand, the present invention is given obtain user terminal to the method for the current routing iinformation of server can but be not limited only to be applied in the call back service.
Claims (17)
1, a kind ofly it is characterized in that, may further comprise the steps by obtaining the method that routing iinformation carries out call subscriber terminal location:
The routing iinformation of record from the call subscriber terminal that activates call back service to server;
When carrying out the callback indication, the callback Indication message is sent to the call subscriber terminal of activation call back service according to the routing iinformation of above-mentioned record.
2, call subscriber terminal localization method as claimed in claim 1 is characterized in that, described method also comprises:
By to network registry unit subscription registration information, obtain routing iinformation from the call subscriber terminal that activates call back service to server.
3, call subscriber terminal localization method as claimed in claim 2 is characterized in that, described detailed process to network registry unit subscription registration information is:
After call back service activates, in setting up the message interaction process of session, know the public subscriber identification of call subscriber terminal, according to described public subscriber identification to network registry unit subscription registration information; Or
After the user terminal of signatory call back service carries out network registry, know the public subscriber identification of call subscriber terminal by third-party registration message, according to described public subscriber identification to network registry unit subscription registration information.
4, call subscriber terminal localization method as claimed in claim 1 is characterized in that, described method also comprises:
By third-party registration message, obtain routing iinformation from the call subscriber terminal that activates call back service to server.
5, as any described call subscriber terminal localization method in the claim 1 to 4, it is characterized in that described method also comprises:
If the call subscriber terminal of described activation call back service re-registers, then upgrade routing iinformation record about this call subscriber terminal.
6, call subscriber terminal localization method as claimed in claim 5 is characterized in that, described method also comprises:
By to network registry unit subscription registration information or third-party registration, obtain the private user identity of the call subscriber terminal that activates call back service.
7, call subscriber terminal localization method as claimed in claim 6 is characterized in that, the detailed process of described more new routing information record comprises:
According to the public subscriber identification and the private user identity of the call subscriber terminal that re-registers, index goes out original routing iinformation record of this call subscriber terminal that has existed;
Current routing iinformation after re-registering according to this call subscriber terminal upgrades original routing iinformation record that index goes out.
8, as any described call subscriber terminal localization method in the claim 1 to 4, it is characterized in that described routing iinformation is user terminal contact address or GRUU.
9, call subscriber terminal localization method as claimed in claim 8 is characterized in that, described routing iinformation also comprises public subscriber identification, calling conversation control unit address, network insertion element address and/or the preference setting of user terminal.
10, a kind of method of obtaining user terminal to the routing iinformation of server is characterized in that:
Server is to the network registry unit of user terminal subscription registration information;
The network registry unit reports the log-on message of current described user terminal to server, and described log-on message comprises routing iinformation at least;
Server obtains the routing iinformation of described user terminal to server according to the log-on message that receives.
11, method according to claim 10 is characterized in that, described method also comprises:
When user terminal re-registered, described network registry unit reported the routing iinformation of the user terminal of renewal to server.
12, method as claimed in claim 10 is characterized in that, the detailed process of described subscription registration information comprises:
Server is known the public subscriber identification of user terminal in setting up the message interaction process of session, according to described public subscriber identification to network registry unit subscription registration information; Or
After user terminal carried out network registry, server was known the public subscriber identification of user terminal by third-party registration message, according to described public subscriber identification to network registry unit subscription registration information.
13, as any described method in the claim 10 to 12, it is characterized in that described routing iinformation comprises user terminal contact address or GRUU at least.
14, method as claimed in claim 13 is characterized in that, described routing iinformation also comprises the public subscriber identification of user terminal, private user identity, calling conversation control unit address, network insertion element address and/or the preference setting of user terminal.
15, a kind of method of obtaining user terminal to the routing iinformation of server is characterized in that:
After the registration message of user terminal is received in the network registry unit, send registration message to server, described registration message comprises the routing iinformation of active user's terminal to server at least;
Server obtains the routing iinformation of described user terminal to server according to the registration message that receives.
16, method as claimed in claim 15 is characterized in that, described routing iinformation comprises user terminal contact address or GRUU at least.
17, method as claimed in claim 16 is characterized in that, described routing iinformation also comprises the public subscriber identification of user terminal, private user identity, calling conversation control unit address, network insertion element address and/or the preference setting of user terminal.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101113801A CN100502440C (en) | 2005-12-09 | 2006-08-24 | Method for obtaining route information between subscriber terminal and server, and use thereof |
| CNA2007800003741A CN101341699A (en) | 2006-08-24 | 2007-07-04 | Method and device for acquiring routing information and method and system for positioning user terminal |
| EP07764161A EP2056539A4 (en) | 2006-08-24 | 2007-07-04 | A method and device for gaining a route message, a method and system for locating a user terminal |
| PCT/CN2007/070232 WO2008025265A1 (en) | 2006-08-24 | 2007-07-04 | A method and device for gaining a route message, a method and system for locating a user terminal |
| US12/391,079 US20090213761A1 (en) | 2006-08-24 | 2009-02-23 | Method and device for acquiring routing information and method and system for locating a user terminal |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510120636.0 | 2005-12-09 | ||
| CN200510120636 | 2005-12-09 | ||
| CNB2006101113801A CN100502440C (en) | 2005-12-09 | 2006-08-24 | Method for obtaining route information between subscriber terminal and server, and use thereof |
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| Publication Number | Publication Date |
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| CN1980288A true CN1980288A (en) | 2007-06-13 |
| CN100502440C CN100502440C (en) | 2009-06-17 |
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| CN (1) | CN100502440C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025265A1 (en) * | 2006-08-24 | 2008-03-06 | Huawei Technologies Co., Ltd. | A method and device for gaining a route message, a method and system for locating a user terminal |
| CN104954373A (en) * | 2015-06-12 | 2015-09-30 | 广东天波信息技术股份有限公司 | Unified communication active SIP (Session Initiation Protocol) calling method and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5644718A (en) * | 1994-11-10 | 1997-07-01 | At&T Corporation | Apparatus using circuit manager to associate a single circuit with each host application where the circuit is shared by a plurality of client applications |
| CN1339748A (en) * | 2000-08-21 | 2002-03-13 | 叶柯 | Method for imformation releasing sorting and access |
| EP1382189A2 (en) * | 2001-04-27 | 2004-01-21 | Siemens Aktiengesellschaft | Interworking of b-side subscriber features for subscribers in a telecommunication network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025265A1 (en) * | 2006-08-24 | 2008-03-06 | Huawei Technologies Co., Ltd. | A method and device for gaining a route message, a method and system for locating a user terminal |
| CN104954373A (en) * | 2015-06-12 | 2015-09-30 | 广东天波信息技术股份有限公司 | Unified communication active SIP (Session Initiation Protocol) calling method and system |
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| CN100502440C (en) | 2009-06-17 |
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