CN101163291A - Method, system and device for providing access network selection for multimode terminal - Google Patents
Method, system and device for providing access network selection for multimode terminal Download PDFInfo
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Abstract
The present invention discloses a method, a system and a device of selecting an access network for a multimode terminal, so as to solve the problem of the prior art that when the multimode terminal is called, the terminal can not indicate a route executive entity to make calling continuation by the selected access mode, after a route decision entity selects the access mode. The method of the present invention includes that: in registration, the terminal reports the type and logo of the access network to the network side; in calling continuation as the called, the route decision entity in the network selects the access mode and indicates the route executive entity to make calling continuation by the selected access mode with the corresponding type and logo of the access network. The present invention includes the route executive entity for calling continuation, the multimode terminal for signaling the type and logo of the access network to the network side in registration and the rout decision entity for selecting the access mode and indicating the route executive entity to make calling continuation by the selected access mode with the corresponding type and logo of the access network.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of method, system and device that access network selection is provided for multimode terminal.
Background technology
All support multiple access module under a lot of situations of present terminal simultaneously, as: the dual-mode terminal of supporting WLAN and WCDMA to insert simultaneously is very common.This terminal can come access network to carry out business by two different access modules in some cases simultaneously, might also can make a phone call by the WCDMA network in by the WLAN online such as a dual-mode terminal.
The core net of present wireless IP communication is after the 3GPP R5 stage, and unified is the IMS network.WLAN is the different access waies of IMS network with WCDMA.Therefore dual-mode terminal recited above carries out business by WLAN and WCDMA network simultaneously, means that terminal is linked on the IMS network by different access network types simultaneously.Carrying out when called for multimode terminal, which kind of Access Network of network selecting continues, and this is called out, and also is the problem that 3GPP is studying.The solution of 3GPP proposition at present is to increase an entity that is called DSF (Domain Selection Function) in the IMS network, is inserted in the session path as AS.When it receives the calling that need be routed to multimode terminal, can carry out the access domain selection decision-making according to various factorss such as carrier policy, user preferences, endpoint registration states, and selected input field be arrived in call proceeding according to the result of decision.When DSF was chosen in CS territory replay call, DSF returned CS territory access code to S-CSCF and continues to the CS territory with indicating call; When DSF was chosen in IMS territory replay call, DSF continued in the IMS territory with indicating call to the IMPU that S-CSCF continues to return the user.But at present the DSF entity just is used for carrying out the selection between CS territory and the IMS territory, can not select between the multiple different Access Networks under the IMS territory.Come replay call when DSF need indicate the WLAN Access Network under the IMS territory, rather than the WCDMA Access Network under the IMS territory being when coming replay call, how should DSF indicate S-CSCF to continue? 3GPP does not have scheme to propose at present.
In the IMS network, IMPU that terminal twice use in front and back is identical and IMPI once register before once registration can be nullified after S-CSCF received when the IMS network is registered at present.Therefore at present the criteria limit of IMS network definition the use that keeps a plurality of registrations to connect simultaneously at the IMS network of same terminal.In order to solve the problem that above-mentioned same terminal keeps a plurality of registrations to connect at the IMS network simultaneously, there is company to use a SIP signaling parameter reg-id who introduces in a kind of outbound mechanism of discussing among the IETF, this parameter is used in the contact header field, be used to refer to a plurality of registered events that same terminal is initiated by different contact addresses, allow S-CSCF can keep a plurality of login states of same terminal.The value of this reg-id is 1,2 this numerals, only occurs in register command, does not occur in call signaling, not as route indication.
Such scheme has only solved the problem that same terminal keeps a plurality of registrations to connect at the IMS network simultaneously, does when called but can not well solve multimode terminal, and how network carries out the problem that access network type is selected and indication continues.When the user had only a terminal to use a certain IMPU, network can allow reg-id appear at and identify certain contact address in the call signaling by the scope of application of expansion reg-id; Or specify wherein a kind of access style of multimode terminal by the mode of a contact address of direct appointment.But when the user has a plurality of terminals to share this IMPU, and the endpoint registration that a plurality of share I MPU are also arranged under the same Access Network is to the IMS network the time, DSF just can not select concrete certain contact address, and can only select a kind of access network type, but reg-id can not be used for identifying different access network types, so DSF just can't be under the situation of having selected an Access Network, use reg-id that selected access network type is indicated to S-CSCF, allow S-CSCF that a plurality of terminals of registering on this Access Network are carried out the forking operation.
Add the technology that a kind of the present invention need use of introducing: feature tag.This is a kind of application system (with reference to RFC 3840) that IETF increases on the SIP signaling, be used for additional various parameters behind the contact header field showing the various application powers of terminal, as the language of audio capability, video capability, locomotivity, support, purposes (commercial still individual), the SIP method of supporting, priority etc.And another one mechanism is exactly IETF " both caller preferences (the Caller Preferences) " that propose in RFC 3841, this mechanism is to use together in conjunction with top feature tag, the application power (carrying in the Accept-contact header field) that can specify some terminal calleds to have according to the attribute of session by the calling party allows network search for only terminal according to the application power of appointment in a plurality of terminals of called use and continues.
In sum, multimode terminal is done when called in the prior art, after the routing decision entity selection access way, can't corresponding indication route carries out entity and carry out call proceeding with selected access way.
Further, prior art can't be taken into account the problem that same terminal keeps a plurality of registrations to connect at the IMS network simultaneously that solves, and after the routing decision entity selection access way, can't corresponding indication route carry out the problem that entity carries out call proceeding with selected access way.
Summary of the invention
The invention provides a kind of method, system and device that access network selection is provided for multimode terminal, do when called in order to solve in the prior art multimode terminal, after the routing decision entity selection access way, can't corresponding indication route carry out the problem that entity carries out call proceeding with selected access way.
Further, the solution prior art can't be taken into account same terminal and keep a plurality of registrations to connect simultaneously at the IMS network, and after the routing decision entity selection access way, corresponding indication route is carried out the problem that entity carries out call proceeding with selected access way.
The inventive method comprises the following steps:
When registration, terminal is informed network side with the access network type sign; And when called connection is called out, the routing decision entity selection access way in the network, and carry out entity with corresponding access network type sign indication route and carry out call proceeding with selected access way.
Further, newly-increased parameter in features tab feature tag is to carry described access network type sign; Perhaps, behind IMS public user identity IMPU, carry newly-increased parameter, to carry described access network type sign; Perhaps, on IMPU, add prefix or suffix, to carry described access network type sign.
Further again, when registration, after newly-increased parameter was positioned at the contact header field among the described feature tag, terminal was added the access network type sign in the described newly-increased parameter to; And when called connection is called out, after newly-increased parameter was positioned at the accept-contact header field among the described feature tag, the routing decision entity added the access network type sign in the described newly-increased parameter to.
Further, comprise following concrete steps: when registration, terminal is carried the access network type sign of its current access way correspondence in register command; Routing decision entity and route are carried out entity and are preserved this access network type sign respectively; When replay call, the routing decision entity is selected access way according to strategy, and carries corresponding access network type sign in the indication signaling that issues to route execution entity; Route is carried out entity and is connected with the access network type mark location registration of carrying in the indication signaling, and carries out call proceeding.
In sum, when registration, network side is discerned a plurality of registered events of same terminal according to the access network type sign of knowing, connects with a plurality of registrations that keep same terminal.
Further again, network side judges whether this terminal carried out registration with the access network type sign of carrying in the register command, if then nullify the corresponding former registration of this access network type sign and connect when receiving the different register command that same terminal is sent; Otherwise, be judged to be a plurality of registered events.
Further again, if terminal need only be registered up-to-date access after changing Access Network, then terminal connects the initiation cancellation to former registration voluntarily.If terminal can't be initiated the cancellation to former registration connection, then network side judges that according to the type identification of Access Network whether the registration connection of this terminal can coexist, and when judgement can not coexist, nullifies former registration and connects; Perhaps, if terminal can't be initiated the cancellation to former registration connection, after then network side waits for that former registration connection is overtime, again with its cancellation.
System of the present invention comprises: route is carried out entity, is used to carry out call proceeding, also comprises:
Multimode terminal is used for when registration the access network type sign being informed network side;
The routing decision entity is used to select access way, and carries out entity with corresponding access network type sign indication route and carry out call proceeding with selected access way to called.
Further, comprise the following units in the described multimode terminal: Access Network recognition unit, the Access Network that is adopted when being used to discern this multimode terminal access network; Adding device is used for when this multimode terminal is initiated registration, and the current Access Network of this multimode terminal that identifies according to described Access Network recognition unit adds corresponding access network type sign in the register command that is sent to network side to.
Further, described routing decision entity comprises the following units: preserve the unit, be used for preserving the access network type sign that register command is carried; Indicating member after the selected access way, extracts corresponding access network type sign according to strategy at the routing decision entity from described preservation unit; And the access network type sign of in the indication signaling that issues to route execution entity, carrying described extraction.
In sum, described routing decision entity is DSF, and it is S-CSCF that route is carried out entity.
Routing decision entity of the present invention comprises the following units: preserve the unit, be used for preserving the access network type sign that register command is carried; Indicating member after the selected access way, extracts corresponding access network type sign according to strategy at the routing decision entity from described preservation unit; And the access network type sign of in the indication signaling that issues to route execution entity, carrying described extraction.
Multimode terminal of the present invention comprises: Access Network recognition unit, the Access Network that is adopted when being used to discern this multimode terminal access network; Also comprise: adding device, be used for when this multimode terminal is initiated registration, the current Access Network of this multimode terminal that identifies according to described Access Network recognition unit adds corresponding access network type sign in the register command that is sent to network side to.
Beneficial effect of the present invention is as follows:
The inventive method no longer adopts reg-id, with the value of 1,2 this numerals as reg-id; But embody the access way of terminal with access network type sign.When registration, terminal is informed network side with the access network type sign; When called connection is called out, the routing decision entity selection access way in the network, and carry out entity with corresponding access network type sign indication route and carry out call proceeding with selected access way.
Further, when registration, network side is discerned a plurality of registered events of same terminal according to the access network type sign of knowing, then can keep a plurality of registrations of same terminal to connect.Keep a plurality of registrations to connect thereby take into account same terminal simultaneously at the IMS network, and after the routing decision entity selection access way, corresponding indication route is carried out the problem that entity carries out call proceeding with selected access way.
In order to support the inventive method, the present invention also provides a kind of and provides system, the routing decision entity of access network selection and multimode terminal for multimode terminal.
Description of drawings
Fig. 1 is the inventive method flow chart of steps;
Fig. 2 is the inventive method example one signaling process figure;
Fig. 3 is the inventive method example two signaling process figure;
Fig. 4 is the inventive method example three signaling process figure;
Fig. 5 is a system configuration schematic diagram of the present invention;
Fig. 6 is the modularization schematic diagram of system of the present invention.
Embodiment
In order to do at multimode terminal when called, after the routing decision entity selection access way, can corresponding indication route to carry out entity and carry out call proceeding with selected access way; Promptly allow multimode terminal be linked into the IMS territory simultaneously by different Access Networks, making when called network the user can be according to policy selection certain Access Network replay call wherein, and when there is the terminal of a plurality of share I MPU in the user on this Access Network, do not influence the forking operation of network, the invention provides a kind of method that access network selection is provided for multimode terminal, referring to shown in Figure 1, comprise following key step:
S1, in when registration, terminal is informed network side with the access network type sign.
Existing reg-id scheme can solve multimode terminal and keep the problem of a plurality of login states at S-CSCF, and what need now is exactly to increase the sign that can indicate access network type again.
The present invention is when registration, terminal is carried the access network type sign of its current access way correspondence in register command, thereby make the routing decision entity of network side (can be DSF, but be not limited to DSF, also can be other AS) and route carry out the sign that entity (can be S-CSCF) obtained and preserved this access network type respectively.
Described label manner of carrying access network type in register command includes but not limited to following three kinds:
Mode one, behind the contact header field, carry newly-increased parameter, to carry described access network type sign.
Described access network type sign can be a new feature tag type, is used for identifying the access network type of a concrete contact address correspondence.For example: a newly-increased parameter accesstype=" wlan " identifies this registration and is undertaken by the WLAN Access Network behind the contact header field.This parameter is obtained by S-CSCF and DSF together with other feature tag in registration.
Mode two, behind IMPU, carry newly-increased parameter, to carry described access network type sign.
Described access network type sign can be that newly-increased parameter is used for representing access network type behind IMPU, for example: add accesstype=behind this IMPU of zhangsan@public.id " wlan " such parameter identifies the WLAN Access Network.This parameter can be obtained by S-CSCF and DSF with IMPU when the user registers.
Mode three, on IMPU, add prefix or suffix, to carry described access network type sign.
Described access network type sign can be used as suffix or the prefix of IMPU, promptly adopts the mode of suffix or prefix to expand IMPU, and access network type is identified in suffix or prefix.For example: IMPU is zhangsan@public.id originally, when terminal expands to zhangsan_wlan@public.id with IMPU when WLAN inserts, when terminal then expands to zhangsan_utran@public.id with IMPU when WCDMA inserts.If the user has a plurality of terminals to insert the IMS network from WLAN, then these several terminals IMPU that can the time expand them in registration is zhangsan_wlan@public.id.
S2, when called connection is called out, routing decision entity selection access way, and carry out entity with corresponding access network type sign indication route.
When the user does when called, routing decision entity (can be DSF) has been selected after a kind of access network type according to various strategies, by in the call signaling (being indication signaling) that returns to route execution entity (can be S-CSCF), carrying corresponding access network type sign, selection result is informed S-CSCF.
It is described that to carry corresponding access network type label manner in call signaling corresponding with three kinds of modes among the step S1.
Mode one among the corresponding step S1, when carrying out called connection, DSF has selected just can inform the selected access network type of S-CSCF by the mechanism of both caller preferences after the Access Network, in sending to the conversation request message of S-CSCF, add the Accept-Contact header field, indication uses certain concrete access network type to carry out call proceeding in the header field, for example: Accept-Contact:*; Accesstype=" wlan " such form can represent that it is that the registration of WLAN connects and to carry out call proceeding that network should be selected access network type.
Mode two among the corresponding step S1, when carrying out called connection, DSF has selected just can carry newly-increased parameter to inform the S-CSCF selection result after called identification (IMPU) after the Access Network.The benefit that this mode is compared mode one is not use both caller preferences mechanism to carry out route, but directly carries out route with called identification.Shortcoming is to need to increase in addition the SIP parameter.
Mode three among the corresponding step S1, when DSF receives that called identification is the calling of original I MPU, select a kind of Access Network, in sending to the call signaling of S-CSCF, will extend this as the expansion IMPU that has added corresponding suffix or prefix in called identification then.The selection result that S-CSCF just can perception DSF like this, and search for the registration of carrying out with this expansion IMPU in view of the above and connect.The benefit that this mode is compared mode two is new spreading parameter, can directly use IMPU to carry out route, and shortcoming is that the AS of other different access network types that do not need perception terminal also needs to discern this IMPU.
S3, route are carried out entity and are carried out call proceeding with the selected access way of routing decision entity.
After the access network type sign that S-CSCF obtains to carry in the call signaling, just can search subscriber there be which terminal being linked into IMS territory (promptly having which terminal under this Access Network, to register) under this Access Network, if have only one, then can directly this terminal be arrived in call proceeding; A plurality of as if having, then S-CSCF can carry out the foking operation according to other strategies.
Further, in order to take into account the problem that same terminal keeps a plurality of registrations to connect at the IMS network simultaneously that solves, and after the routing decision entity selection access way, can't corresponding indication route carry out the problem that entity carries out call proceeding with selected access way, the inventive method is when endpoint registration, network side connects with a plurality of registrations that keep same terminal according to a plurality of registered events of the same terminal of knowing of access network type sign identification, so just can not need the reg-id scheme.
Concrete grammar is: S-CSCF can identify according to the access network type that carries in the register command and distinguish when receiving the register command that send same terminal front and back.If the access network type of twice registration is the same, then can nullifies original registration and connect; If the access network type of twice registration is different, then can think many registered events, just do not nullify original registration and connect.
If terminal need only be registered up-to-date access after changing Access Network, need not keep original access, then terminal can be initiated log off procedure to former registration voluntarily.If terminal has lost the connection of former Access Network, can't initiate cancellation to former registration, then network can judge whether according to the type of twice Access Network in front and back to nullify original connection, if can not coexist simultaneously between former and later two Access Networks, for example: LTE and GERAN, then network can connect former registration to nullifying; Perhaps, network can not go initiatively to judge access network type yet, but waits for that original registration connects overtime inefficacy and it nullified afterwards again.
Below specifically describe the inventive method by three examples.
Method example one, feature tag of increase identify access network type, suppose that newly-increased featuretag name is accesstype, concrete value has " wlan ", " lte ", " utran ", " geran ", " hrpd " etc., in order to identify various access network type.Referring to shown in Figure 2, comprise following concrete steps:
1, multimode terminal inserts the IMS network from WCDMA, initiate register requirement REGISTER, carry the contact-1 address in the request message, contact header field back has the accesstype parameter that identifies access network type, the parameter assignment is " utran ", expression is from the WCDMA network insertion.Request message arrives S-CSCF after transmitting through other entities, because its middle process and the present invention are irrelevant, has omitted here.
2, user's register flow path finishes after the success, S-CSCF (had subscribed to user's registered events with the incident and the contact context notification DSF of user's registration to S-CSCF before the DSF, therefore S-CSCF can notify DSF here, and subscription procedure and the present invention are irrelevant, have omitted here).
3, multimode terminal is linked into the IMS network from WLAN again, initiates the another one register requirement, carry in the request message new contact address and assignment for " wlan " and the accesstype parameter, expression newly inserts from wlan network.After S-CSCF receives this registration message, judge that according to different access network type parameters this is many registrations that same terminal is initiated, the connection of then not nullifying original contact-1.S-CSCF also can come perception by the reg-id described in other modes such as the prior art one, and this is many registered events of same terminal.
4, S-CSCF also notifies DSF the new registered events of user.
5, when a calling need be routed to the user, call signaling INVITE at first sent to S-CSCF.
6, S-CSCF triggers by iFC (Initial Filter Criteria, initial filter criteria), and call signaling is triggered to DSF.
7, DSF is according to various strategic decision-making this calling that continues to needs from WLAN, and then filling in Accept-Contact header field content is accesstype=" wlan ", and the INVITE request that will contain this header field returns to S-CSCF.
8, S-CSCF is according to the selection of DSF, select accesstype for " wlan " and registration connect.Supposing to have only a registration to connect in the present embodiment is contact-2, and then S-CSCF just extends this as Request-URI the content of contact-2, and the INVITE request is issued.This calling will continue by the WLAN Access Network like this.If accesstype for " wlan " and registration be connected with a plurality ofly, then S-CSCF can issue call request simultaneously or sequentially to these several connections, carries out the forking operation.
9, multimode terminal answers the call under WLAN, returns and calls out final response.
Method example two, behind IMPU, add parameter to identify the mode of different access network types, new name of adding parameter is accesstype, concrete value has " wlan ", " lte ", " utran ", " geran ", " hrpd " etc., in order to identify various access network type.Referring to shown in Figure 3, comprise following concrete steps:
1, multimode terminal inserts the IMS network from WCDMA, initiate register requirement REGISTER, carry the contact-1 address in the request message, the IMPU back that the to header field carries has the accesstype parameter that identifies access network type, the parameter assignment is " utran ", expression is from the WCDMA network insertion.Request message arrives S-CSCF after transmitting through other entities, and pilot process and the present invention are irrelevant, have omitted here.
2, after user's register flow path finishes, incident, the registered user that S-CSCF registers the user identifies IMPU and contact context notification DSF (had subscribed to user's registered events to S-CSCF before the DSF, therefore S-CSCF can notify DSF here, subscription procedure and the present invention are irrelevant, have omitted here).
3, multimode terminal is linked into the IMS network from WLAN again, initiates the another one register requirement, carries new contact address in the request message, carry behind the IMPU in the to header field assignment for " wlan " and the accesstype parameter, expression newly inserts from wlan network.After S-CSCF receives this registration message, judge that according to different access network type parameters this is many registrations that same terminal is initiated, the connection of then not nullifying original contact-1.S-CSCF also can come perception by the reg-id described in other modes such as the prior art one, and this is many registered events of same terminal.
4, S-CSCF also notifies DSF the new registered events of user.
5, when a calling need be routed to the user, call signaling INVITE at first sent to S-CSCF.
6, S-CSCF triggers by iFC (Initial Filter Criteria, initial filter criteria), and call signaling is triggered to DSF.
7, DSF continues to needs from WLAN according to various strategic decision-making, and this calls out, and then adds parameter accesstype=behind the Request-URI header field of INVITE request " wlan " represent selection result, and this INVITE request is returned to S-CSCF.
8, S-CSCF is according to the selection of DSF, select with carry the accesstype parameter for " wlan " and the IMPU connection of registering.Supposing to have only a registration to connect in the present embodiment is contact-2, and then S-CSCF just extends this as Request-URI the content of contact-2, and the INVITE request is issued.This calling will continue by the WLAN Access Network like this.If with carry the accesstype parameter for " wlan " and being connected with of registering of IMPU a plurality of, then S-CSCF can issue call request simultaneously or sequentially to these several connections, carries out the forking operation.
9, multimode terminal answers the call under WLAN, returns and calls out final response.
Method example three, expansion IMPU add suffix to identify the mode of different access network types behind IMPU.Referring to shown in Figure 4, comprise following concrete steps:
1, multimode terminal inserts the IMS network from WCDMA, initiates register requirement REGISTER, carries the contact-1 address in the request message, and the IMPU back that the to header field carries has the suffix _ utran that identifies access network type, and expression is from the WCDMA network insertion.Request message arrives S-CSCF after transmitting through other entities, and pilot process and the present invention are irrelevant, have omitted here.
2, after user's register flow path finishes, incident, the registered user that S-CSCF registers the user identifies IMPU and contact context notification DSF (had subscribed to user's registered events to S-CSCF before the DSF, therefore S-CSCF can notify DSF here, subscription procedure and the present invention are irrelevant, have omitted here).
3, multimode terminal is linked into the IMS network from WLAN again, initiates the another one register requirement, carries new contact address in the request message, has suffix _ wlan behind the IMPU in the to header field, and expression newly inserts from wlan network.After S-CSCF receives this registration message, judge that according to different access network types this is many registrations that same terminal is initiated, the connection of then not nullifying original contact-1.S-CSCF also can come perception, and this is many registered events of same terminal by the reg-id described in other modes such as the prior art.
4, S-CSCF also notifies DSF the new registered events of user.
5, when a calling need be routed to the user, call signaling INVITE at first sent to S-CSCF.
6, S-CSCF triggers by iFC (Initial Filter Criteria, initial filter criteria), and call signaling is triggered to DSF.
7, DSF continues to needs from WLAN according to various strategic decision-making, and this calls out, and the Request-URI that then revises the INVITE request is that the expansion IMPU:IMPU_wlan that has added suffix represents selection result, and this INVITE request is returned to S-CSCF.
8, S-CSCF selects the connection as the IMPU registration with IMPU_wlan according to the selection of DSF.Supposing to have only a registration to connect in the present embodiment is contact-2, and then S-CSCF just extends this as Request-URI the content of contact-2, and the INVITE request is issued.This calling will continue by the WLAN Access Network like this.If a plurality of with being connected with of registering of IMPU_wlan, then S-CSCF can issue call request simultaneously or sequentially to these several connections, carries out the forking operation.
9, multimode terminal answers the call under WLAN, returns and calls out final response.
In order to support the inventive method, the present invention also provides a kind of system that access network selection is provided for multimode terminal, referring to shown in Figure 5, it comprises: the routing decision entity of Xiang Lianing (can be DSF successively, but be not limited to DSF, also can be other AS), route carries out entity (can be S-CSCF) and multimode terminal (be the multimode terminal of WCDMA, also can be the multimode terminal of CDMA2000 or the mobile multimode terminal of other standards).
Described multimode terminal is used for when registration, by register command the access network type sign of its current access way correspondence is informed network side.
Described routing decision entity is used for according to various policy selection access waies, and carries out entity with corresponding access network type sign indication route and carry out call proceeding with selected access way to called.
Described route is carried out entity, is used for the indication according to the routing decision entity, carries out call proceeding.
Referring to shown in Figure 6, comprise interconnective Access Network recognition unit and adding device in the described multimode terminal (being multimode terminal of the present invention).Described Access Network recognition unit, the Access Network that is adopted when being used to discern this multimode terminal access network.Described adding device is used for when this multimode terminal is initiated registration, and the current Access Network of this multimode terminal that identifies according to described Access Network recognition unit adds corresponding access network type sign in the register command that is sent to network side to.
Described routing decision entity (being routing decision entity of the present invention) comprises interconnective preservation unit and indicating member.Described preservation unit is used for preserving the access network type sign that register command carries (carried out entity and obtained access network type sign by route after, issue the routing decision entity), and offers indicating member.Described indicating member after the selected access way, extracts corresponding access network type sign according to strategy at the routing decision entity from described preservation unit; And the access network type sign of in the indication signaling that issues to route execution entity, carrying described extraction.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention, for example: the multimode terminal that is applied to WCDMA of the present invention in embodiment, can also use and the multimode terminal of CDMA2000 or the mobile multimode terminal of other standards.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. one kind for multimode terminal provides the method for access network selection, it is characterized in that, comprises the following steps:
When registration, terminal is informed network side with the access network type sign; And
When called connection is called out, the routing decision entity selection access way in the network, and carry out entity with corresponding access network type sign indication route and carry out call proceeding with selected access way.
2. the method for claim 1 is characterized in that, newly-increased parameter in features tab feature tag is to carry described access network type sign;
Perhaps, behind IMS public user identity IMPU, carry newly-increased parameter, to carry described access network type sign;
Perhaps, on IMPU, add prefix or suffix, to carry described access network type sign.
3. method as claimed in claim 2 is characterized in that, when registration, after newly-increased parameter was positioned at the contact header field among the described feature tag, terminal was added the access network type sign in the described newly-increased parameter to; And
When called connection is called out, after newly-increased parameter was positioned at the accept-contact header field among the described feature tag, the routing decision entity added the access network type sign in the described newly-increased parameter to.
4. the method for claim 1 is characterized in that, comprises following concrete steps:
-when registration, terminal is carried the access network type sign of its current access way correspondence in register command;
-routing decision entity and route are carried out entity and are preserved this access network type sign respectively;
-when replay call, the routing decision entity is selected access way according to strategy, and in the indication signaling that issues to route execution entity, carry corresponding access network type sign;
-route is carried out entity and is connected with the access network type mark location registration of carrying in the indication signaling, and carries out call proceeding.
5. as each described method of claim 1 to 4, it is characterized in that when registration, network side is discerned a plurality of registered events of same terminal according to the access network type sign of knowing, connects with a plurality of registrations that keep same terminal.
6. method as claimed in claim 5, it is characterized in that, network side is when receiving the different register command that same terminal is sent, judge whether this terminal carried out registration with the access network type sign of carrying in the register command, if then nullify the corresponding former registration of this access network type sign and connect; Otherwise, be judged to be a plurality of registered events.
7. method as claimed in claim 5 is characterized in that, if terminal need only be registered up-to-date access after changing Access Network, then terminal connects the initiation cancellation to former registration voluntarily.
8. method as claimed in claim 7, it is characterized in that if terminal can't be initiated the cancellation to former registration connection, then network side judges according to the type identification of Access Network whether the registration connection of this terminal can coexist, when judgement can not coexist, nullify former registration and connect;
Perhaps, if terminal can't be initiated the cancellation to former registration connection, after then network side waits for that former registration connection is overtime, again with its cancellation.
9. one kind for multimode terminal provides the system of access network selection, and comprising: route is carried out entity, is used to carry out call proceeding, it is characterized in that, also comprises:
Multimode terminal is used for when registration the access network type sign being informed network side;
The routing decision entity is used to select access way, and carries out entity with corresponding access network type sign indication route and carry out call proceeding with selected access way to called.
10. system as claimed in claim 9 is characterized in that, comprises the following units in the described multimode terminal:
The Access Network recognition unit, the Access Network that is adopted when being used to discern this multimode terminal access network;
Adding device is used for when this multimode terminal is initiated registration, and the current Access Network of this multimode terminal that identifies according to described Access Network recognition unit adds corresponding access network type sign in the register command that is sent to network side to.
11. system as claimed in claim 9 is characterized in that, described routing decision entity comprises the following units:
Preserve the unit, be used for preserving the access network type sign that register command is carried;
Indicating member after the selected access way, extracts corresponding access network type sign according to strategy at the routing decision entity from described preservation unit; And the access network type sign of in the indication signaling that issues to route execution entity, carrying described extraction.
12., it is characterized in that described routing decision entity is DSF as each described system of claim 9 to 11, it is S-CSCF that route is carried out entity.
13. a routing decision entity is characterized in that, comprises the following units:
Preserve the unit, be used for preserving the access network type sign that register command is carried;
Indicating member after the selected access way, extracts corresponding access network type sign according to strategy at the routing decision entity from described preservation unit; And the access network type sign of in the indication signaling that issues to route execution entity, carrying described extraction.
14. a multimode terminal comprises: the Access Network recognition unit, the Access Network that is adopted when being used to discern this multimode terminal access network is characterized in that, also comprises:
Adding device is used for when this multimode terminal is initiated registration, and the current Access Network of this multimode terminal that identifies according to described Access Network recognition unit adds corresponding access network type sign in the register command that is sent to network side to.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101410988A CN101163291B (en) | 2006-10-12 | 2006-10-12 | Method, system and device for providing access network selection for multimode terminal |
| PCT/CN2007/002929 WO2008046303A1 (en) | 2006-10-12 | 2007-10-11 | Method for providing access mode selection to multimode terminal, system and apparatus thereof |
| ES07816543.8T ES2431051T5 (en) | 2006-10-12 | 2007-10-11 | Method for providing a selection of access mode to a multimode terminal and corresponding system and apparatus |
| EP07816543.8A EP2061269B2 (en) | 2006-10-12 | 2007-10-11 | Method for providing access mode selection to multimode terminal, system and apparatus thereof |
| US12/419,797 US8750201B2 (en) | 2006-10-12 | 2009-04-07 | Method, system and apparatus for providing access mode selection to multimode terminal |
| US13/270,935 US8699419B2 (en) | 2006-10-12 | 2011-10-11 | Method, system and apparatus for providing access mode selection to multimode terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101410988A CN101163291B (en) | 2006-10-12 | 2006-10-12 | Method, system and device for providing access network selection for multimode terminal |
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| Publication Number | Publication Date |
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| CN101163291A true CN101163291A (en) | 2008-04-16 |
| CN101163291B CN101163291B (en) | 2010-09-08 |
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| CN2006101410988A Active CN101163291B (en) | 2006-10-12 | 2006-10-12 | Method, system and device for providing access network selection for multimode terminal |
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