CN102177737A - Method and system for processing circuit switched fallback service, mobility management entity and user equipment - Google Patents
Method and system for processing circuit switched fallback service, mobility management entity and user equipment Download PDFInfo
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
Abstract
A method and system for processing a Circuit Switched Fallback (CSFB) service, a Mobility Management Entity (MME) and a User Equipment (UE) are disclosed in the present invention. The method includes that: the MME receives a first message transmitted from a Mobile Switching Center (MSC); and if the first message includes indication information that the UE is disconnected in a Circuit Switched (CS) domain, or the first message indicates the MME to resume packet bearer procedure, then the packet bearer procedure is resumed, wherein, the first message indicating the MME to resume the packet bearer procedure is transmitted when the MSC determines that the UE is disconnected in the CS domain. With the embodiments in the present invention, the signaling cost can be saved, the effect of Idle-mode Signaling Reduction (ISR) mechanism can be guaranteed, and the network resources can be saved.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of circuit switching fall-back (Circuit Switched fallback, CSFB) method for processing business and system and mobile management entity (Mobility Management Entity, MME) and subscriber equipment (User Equipment, UE).
Background technology
Long Term Evolution (Long Term Evolution, LTE) core net of system has only kept grouping (Packet Switched, PS) territory, block core (the Evolved Packet Core that is called evolution, EPC) network, the packet core network of evolution mainly comprise MME, gateway (Serving Gateway, S-GW), grouped data network gateway (Packet Data Network Gateway, PGW) three logic entities.The wireless access network of LTE system is evolved universal terrestrial radio access network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN), in addition, subscriber equipment also can pass through GSM EDGE Radio Access Network (GSM EDGE Radio Access Network, GERAN) or universal terrestrial access network (Universal Terrestrial Radio Access Network UTRAN) (is abbreviated as GERAN/UTRAN) and inserts the packet core network of evolution.The LTE system comprises the E-UTRAN network.
At present operator by circuit (Circuit Switched, CS) territory provides speech business for the user, wherein the core network of circuit domain mainly comprise mobile switching centre (Mobile Switching Center, MSC).In order in the E-UTRAN network, to provide the circuit voice business, between MME and MSC, introduced the SGs interface to UE.Under this framework, UE at first initiates EPS mobile management (EPS Mobility Management, EMM) combined process flow (EMM Combined procedures) at the E-UTRAN network.By combined process flow, MME is that UE establishment SGs is related with MSC.When the UE preparation initiation CS beginning exhaled (MO) professional, UE need fall back to circuit domain earlier, and then carries out the MO business.When MSC receives that a CS exhales (MT) professional eventually, MSC sends beep-page message by the SGs interface to MME, and MME carries out paging by the E-UTRAN network to UE, after UE receives this beep-page message, need fall back to circuit domain earlier, and then finish the subsequent treatment of this MT business.The processing method of above-mentioned framework and MO business, MT business can be called CSFB.
In addition, for solve under the idle pulley UE at different access systems (for example, GERAN/UTRAN network and E-UTRAN network) between frequent switching the and the signal resource storm problem that causes that a large amount of mobile management flow processs takes place and cause, saving signaling (Idle mode signalling reduction, ISR) function have been introduced.In case ISR activates, UE is at the registration area of different access systems, for example, the route district of registration (Routing Area, RA) and the tracking area of registration (Tracking Area is when TA) mobile, routing update (Routing Area Update can not take place because connecting system changes, RAU) or tracing section updating (Tracking Area Update, TAU) flow process reach the effect of saving signaling.
Under the CSFB technology, when UE falls back to the objective network sub-district of supporting the circuit voice business when being stationed from source E-UTRAN network, if objective network is not supported two-way transfer mode (Dual Transfer Mode, DTM), mean that UE can't handle the PS related service when objective network is carried out speech business, the PS business of UE will be suspended so.Particularly, Serving GPRS Support Node (Serving GPRS Support Node, SGSN) or MME notice S-GW the packet bearer of UE is changed to suspended state, under suspended state, S-GW preserves corresponding packet bearer, but receive downlink grouped data and will can not trigger SGSN or MME paging UE, remove up to suspended state.For the processing that recovers to hang up carrying, can be that UE returns the E-UTRAN network and initiates the TAU flow process immediately after the circuit voice service ending, MME sends recovery request (Resume Request) message and gives S-GW in this flow process, and notice S-GW removes packet bearer and hangs up, just recovering bearing.
But the packet bearer processing method that this recovery is suspended depends on UE and initiates the corresponding flow process of recovering, for example, and the TAU flow process.This can increase signaling consumption undoubtedly, and especially the signaling consumption of wireless access network causes the Radio Access Network signaling congestion probably.In addition, under the situation that ISR activates, when UE returns the E-UTRAN network from objective network, if the TA of registration before not leaving, according to the treatment principle of ISR, UE does not need to initiate the TAU flow process so, and be to understand to hang to carry out the TAU flow process again, this greatly reduces the effect of ISR undoubtedly.
Summary of the invention
The embodiment of the invention provides a kind of CSFB method for processing business and system and mobile management entity and subscriber equipment, saves signaling consumption, ensures ISR mechanism effect, saves Internet resources.
The embodiment of the invention provides a kind of CSFB method for processing business, comprising:
Mobile management entity MME receives first message that moving exchanging center MSC sends;
If described first message comprises user equipment (UE) and connects the indication information that disconnects in the circuit switching (CS) territory, perhaps described first message indicates described MME to carry out recovery packet bearer flow process, then carry out and recover the packet bearer flow process, wherein, described first message is that described MSC determines to send when described UE connects disconnection in the CS territory.
The embodiment of the invention provides a kind of Mobility Management Entity, comprising:
Receiver module is used to receive first message that moving exchanging center MSC sends;
Processing module comprises that user equipment (UE) connects the indication information that disconnects in the circuit switching (CS) territory if be used for described first message, and perhaps described first message indicates described MME to carry out recovery packet bearer flow process, then carries out and recovers the packet bearer flow process; Wherein, described first message is that described MSC determines to send when described UE connects disconnection in the CS territory.
The embodiment of the invention provides a kind of CSFB transaction processing system, comprising:
Moving exchanging center MSC is used for when knowing that user equipment (UE) connects disconnection in the circuit switching (CS) territory, sends to comprise that UE connects first message of the indication information that disconnects in the CS territory, and perhaps, indication MME execution recovers first message of packet bearer flow process;
Mobile management entity MME is used to receive first message of the described UE of comprising of described MSC transmission at the indication information of CS territory connection disconnection, perhaps, after described indication MME carries out first message of recovery packet bearer flow process, execution recovery packet bearer flow process.
The embodiment of the invention provides a kind of subscriber equipment, comprising:
Receiver module, be used to receive the message of recovering the UE carrying that shows of moving exchanging center MSC transmission, the described message of recovering the UE carrying that shows is that described MSC sends after receiving the message that shows executed recovery packet bearer flow process of mobile management entity MME transmission;
Processing module, be used for described receiver module receive described show the message of recovering UE carrying after, if confirm that saving signaling ISR activates and still be in the tracking area TA of registration when returning evolved universal terrestrial radio access network E-UTRAN or during the TA of preservation, no longer initiate to be used for the tracing section updating TAU flow process of recovering bearing.
As shown from the above technical solution, the embodiment of the invention triggers MME by MSC and carries out the processing that recovers packet bearer, the big and problem that reduces the ISR effect of the signaling consumption that causes in the time of can avoiding UE to initiate to recover packet bearer.Therefore, present embodiment can reduce signaling consumption, ensures the effect of ISR mechanism, saves Internet resources.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done an introduction simply in will describing embodiment below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the CSFB system that the present invention is based on;
Fig. 2 is the method flow schematic diagram of first embodiment of the invention;
Fig. 3 is the method flow schematic diagram of second embodiment of the invention;
Fig. 4 is the method flow schematic diagram of third embodiment of the invention;
Fig. 5 is the structural representation of the mobile management entity of fourth embodiment of the invention;
Fig. 6 is the structural representation of the system of fifth embodiment of the invention;
Fig. 7 is the structural representation of the subscriber equipment of sixth embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the structural representation of the CSFB system that the present invention is based on, core net comprises MME 11, S-GW 12, P-GW 13, UE 14 can insert MME by the eNodeB 15 of E-UTRAN and carry out packet switch domain service, also can insert MSC 17 and carry out circuit domain business by the BSC of GERAN, the RNC of UTRAN (BSC/RNC) 16, in addition, UE when resident, also can insert packet domain core networks by SGSN 18 in GERAN/UTRAN.In order in E-UTRAN, to carry out circuit domain business, introduced the SGs interface between MSC and the MME.
Fig. 2 is the method flow schematic diagram of first embodiment of the invention, comprising:
Step 21:MME receives first message that MSC sends;
Step 22: connect the indication information that disconnects in the CS territory if described first message comprises UE, perhaps described first message indicates described MME to carry out recovery packet bearer flow process, then carry out and recover the packet bearer flow process, wherein, described first message is that described MSC determines to send when described UE connects disconnection in the CS territory.
In framework shown in Figure 1, on the one hand, after packet bearer was suspended, if when UE returns E-UTRAN, UE need carry out and separate the extension flow process accordingly, for example the TAU flow process.And for the scene that activates ISR, when UE moves at the registration area of different access systems, can RAU or TAU flow process not take place because connecting system changes, to reach the effect of saving signaling.But flow process is hung in above-mentioned separating needs UE to carry out the TAU flow process again, can increase the signaling consumption of wireless access network like this, is difficult to ensure the effect of ISR.For this reason, in the present embodiment, will trigger MME by MSC and carry out recovery packet bearer flow process, and, can not increase the signaling consumption of wireless access network because MME and MSC are core network elements.
In addition, in another embodiment, can also comprise the steps:
If described first message comprises UE and connects the indication information of setting up in the CS territory that then described MME refuses the described UE of paging after the paging that receives the S-GW transmission triggers message.
Particularly, when ISR activated, S-GW received paging and triggers message, for example, after downlink data notification (the Downlink Data Notification) message, can be simultaneously by SGSN and MME paging UE, still, if this moment, UE was in connection status in the CS territory, for example, carrying out speech business, UE must not reside among the E-UTRAN, the processing of MME execution paging UE can't receive the UE response so, has caused the signaling waste.Therefore, present embodiment can be known that UE is current at MME and be in connection status in the CS territory, will can not trigger paging UE when just UE is unreachable, promptly refuses paging UE.
Wherein, the relevant signaling in the MSC CS territory that can send according to UE is known that UE is in to connect to set up or connect and is disconnected in the CS territory.For example, after MSC receives service request (the CM Service Request) message of UE transmission, know that UE connects foundation in the CS territory, or, after MSC confirms that UE enters dedicated mode (dedicated mode), know that UE connects foundation in the CS territory; Perhaps, after MSC receives disconnection (disconnect) message of UE transmission, know that UE connects disconnection in the CS territory, or, after MSC confirms that UE leaves dedicated mode, know that UE connects disconnection in the CS territory.
Afterwards, MSC can known UE when the connection of CS territory is set up, and sends to MME to comprise that UE connects first message of the indication information of setting up in the CS territory; Perhaps, MSC can comprise that to the MME transmission UE connects first message of the indication information that disconnects in the CS territory when knowing that UE connects disconnection in the CS territory, perhaps indicate MME to carry out first message of recovery packet bearer flow process.
Recover the packet bearer flow process if described first message indicates described MME to carry out, then described MME receives first message that MSC sends, and can comprise: described MME subscribes to described MSC and triggers the message of recovering packet bearer; The described MME of indication that described MME receives described MSC transmission carries out first message of recovering the packet bearer flow process, and first message that the described MME of described indication carries out recovery packet bearer flow process is: described MSC is knowing that described MME subscription triggers the message of recovering packet bearer and know that UE sends after the CS territory connects disconnection.Wherein, this subscription triggers the message that the message of recovering packet bearer can show the packet bearer hang-up for transmission.
If comprise the indication information that UE disconnects in the connection in CS territory in described first message or comprise the indication information that UE sets up in the connection in CS territory, then described MME receives first message that described MSC sends, can comprise: between described MME and the described MSC after the related foundation, described MME receives that described MSC sends comprises first message of the indication information that the connection of UE in the CS territory disconnect, perhaps, comprise first message of UE at the indication information of the connection foundation in CS territory; Perhaps, described MME subscribes to the active situation of UE in the CS territory to described MSC, comprise first message of UE so that described MSC subscribes to the back at described MME to described MME transmission, perhaps, comprise first message of UE at the indication information of the connection foundation in CS territory at the indication information of the connection disconnection in CS territory.Wherein, described MME subscribes to the active situation of UE in the CS territory to described MSC, and can comprise: MME sends subscribe message to MSC.This subscribe message can be vigilant request (Alert Request) message.Further, above-mentioned subscribe message can send subscribe message for after MME confirms to have activated ISR.
Present embodiment triggers MME by MSC and carries out the processing that recovers packet bearer, and the big and problem that reduces the ISR effect of the signaling consumption that causes in the time of can avoiding UE to initiate to recover packet bearer perhaps, is not carried out E-UTRAN to UE and can be avoided ineffertive pager.Therefore, present embodiment can reduce signaling consumption, ensures the effect of ISR mechanism, saves Internet resources.
Fig. 3 is the method flow schematic diagram of second embodiment of the invention, and present embodiment is with under the CSFB scene, and MSC triggers MME execution recovery packet bearer and is treated to example.Referring to Fig. 3, present embodiment comprises:
Step 301:MME sets up SGs with MSC and is connected (SGs Association has been created).
Wherein, UE initiates EMM combined process flow (EMM Combined procedures) to set up the SGs connection.
Concrete, UE sends to MME and adheres to request (Attach Request) message, and the type of attachment in the EPS type of attachment cell in this message (EPS Attach Type) is designated as to unite adheres to, as " combined EPS/IMSI attach "; Perhaps, UE sends tracing section updating request (TAURequest) message to MME, updating type in the EPS updating type cell in this message (EPS update type) is designated as the tracking area/location area updating of associating, as " combined TA/LA updating ".
MME accepts the request of EMM combined process flow, with to set up SGs between the MSC related, and return response message notice EMM combined process flow to UE and accept, for example, MME sends to UE and adheres to (Attach Accept) message that accepts request, EPS adheres to result (EPS Attach result) and is designated as to unite and adheres in this message, as " combined EPS/IMSI attach "; Perhaps, MME is to sending tracing section updating (TAU Accept) message that accepts request, and EPS upgrades the tracking area/location that result (EPS update result) is designated as associating and upgrades in this message, as " combined TA/LA updated ".
Step 302:MME hangs up Packet Service.
For example, MME receives the S1-AP UE Context Release Request message that eNodeB sends, in the message indication objective network PS business unavailable-" UE is not available for the PS service in the target cell ", MME initiates the GBR carrying of dedicated bearing deexcitation flow process (Dedicated Bearer Deactivation procedure) notice S-GW and P-GW deletion UE.In addition, MME notice S-GW keeps and hangs up the Non-GBR carrying and hang, and for example, MME sends Suspend Notification-to S-GW and hangs up notification message.MME writes down the current suspended state (suspended status) that is in of UE in context.
Step 303:MME and MSC finish alternately to subscribe to trigger and recover flow process.
Particularly, the embodiment of the invention does not limit MME and MSC finishes concrete message name and the content of subscription triggering recovery flow process alternately, connect release/termination CS connection in case its effect is UE to the MSC request, MSC is by initiating to recover flow process with the related triggering of the SGs of MME MME so.For example, MSC receives the message of the request release/termination CS connection of UE transmission, and MSC transmission Resume Request message triggers to MME and carries out the recovery flow process.
Concrete, MME and MSC finish its mode of subscription triggering recovery flow process alternately and can be:
The information notice MSC that MME is suspended the UE packet bearer; MSC knows that the packet bearer of UE is suspended, connect in case UE meets releases/terminations CS to MSC request, so MSC by with the related transmission of the SGs of MME message, for example, Resume Request message, triggering MME initiation recovery flow process.
Step 304:CS territory connects to be set up, and UE carries out CS territory business.
Particularly, UE falls back to GERAN/UTRAN from E-UTRAN and sets up the CS connection, and carries out CS business (speech business).
Step 305:UE disconnects the CS territory with MSC and is connected.
Particularly, UE disconnects to network (MSC) request and connecting.For example, UE sends to MSC and disconnects request (Disconnect) message, and request disconnects and connecting.
Step 306:MSC triggers MME and initiates to recover flow process.
Particularly, MSC receives the disconnection message that UE sends, and triggers MME and initiates to recover flow process.For example, can be that MSC sends resume request message to MME, certainly, the message of this step is not limited to resume request message, also can be other message, specifically can be referring to the processing spec in the step 303.
Step 307:MME initiates to recover flow process.
Particularly, MME confirms the current suspended state that is in of UE, and MME notice S-GW recovers packet bearer, activates (re-activate) carrying in other words again.Concrete, for example, MME sends Modify Bearer Request-to S-GW and revises bearing request message.S-GW receives this message, removes suspended state, returns Modify Bearer response-to MME and revises bearing response message.
Step 308:MME sends response message to MSC, for example resume Response message.
Particularly, MME returns response message to MSC, the carrying that notice has been recovered UE.
Step 309:MSC is resumed to the carrying of UE notice.
For example, MSC sends to UE and discharges request (release request) message, wherein can carry indication information (for example, " Resume ") in this release request message and be used to indicate the carrying of UE to be resumed.
Step 310:UE sends response message to MSC, for example, discharges and finishes (release complete) message.
Particularly, UE confirms that carrying is resumed, and under the scene that ISR activates and return E-UTRAN and still be in TA registration or that preserve, does not then need to initiate TAU flow process recovering bearing.
Present embodiment triggers MME by MSC and carries out the processing that recovers packet bearer, the big and problem that reduces the ISR effect of the signaling consumption that causes in the time of can avoiding UE to initiate to recover packet bearer.
Fig. 4 is the method flow schematic diagram of third embodiment of the invention, and present embodiment activates with ISR and UE is in connection status in the CS territory, and it is example that MME does not carry out paging.
In the prior art, under the scene that ISR activates, the loaded state above the S-GW does not show hang-up, if S-GW receives downlink data, S-GW can trigger paging simultaneously to SGSN and MME so.
Under the scene of CSFB, UE is current to be in connection status in the CS territory, for example, is in the circuit voice session status, just means MME, and UE is that paging is inaccessible.At this moment, if S-GW receive downlink data and not recording carrying be in suspended state, then trigger SGSN and MME paging UE, to carry out that paging UE handles be redundant to MME as can be seen, wasted Internet resources.
For this reason, present embodiment provide a kind of method with the problem that solves the above-mentioned wasting of resources referring to Fig. 4, present embodiment comprises:
Step 401:MME sets up SGs with MSC and is connected.
Particular content can be referring to step 301.
Step 402:MME subscribes to the connection status of UE in the CS territory to MSC.
Concrete, MME sends message to MSC, for example vigilant request-Alert Request message, and subscription/triggering MSC provides the CS of UE to connect situation to it, comprises that mainly CS connects foundation and/or CS connects release/termination.The embodiment of the invention does not limit determines that CS connects the concrete mode that is connected release/termination with CS of setting up.For example, UE enters dedicated mode and can be considered to CS connection foundation; UE leaves dedicated mode can be considered to CS connection release/termination.
Can carry indication information in this message, be used to indicate the concrete incident of subscription.For example, can connect foundation by the incident of only subscribing to-CS; Perhaps only subscribe to incident-CS and connect release/termination; Perhaps aforementioned two incidents subscribe to all that (this subscribed content can be considered the default subscription content.That is, MSC receives the described subscribe message that MME sends, and does not clearly indicate under the prerequisite of subscribed content again, and default affirmation MME subscribes to CS connection foundation and is connected these two concrete incidents of release/termination with CS).
As subscribe to the CS connection and set up, then UE has set up the CS connection, and MSC notice MME current UE is in the CS connection status, in other words CS is connected foundation (this incident) and is notified to MME; As subscribe to CS connection release/termination, and then the CS of UE connects release/termination, and MSC notice MME current UE is in CS and connects release/termination, in other words CS is connected release/termination (this incident) and is notified to MME.
The embodiment of the invention does not limit concrete message name and the structure of MME to the connection situation of MSC subscription UE in circuit domain, and its effect mainly is that subscription/triggering MSC provides the CS of UE to connect situation to it.
MME can subscribe to the connection situation of UE in the CS territory to MSC confirming to have activated under the scene of ISR, to reach the implementation result of this example, that is, knows the connection situation of UE in the CS territory by MME, can avoid ineffertive pager, saves signaling consumption.
MSC to MME to provide the CS of UE to connect situation also can be MME with MSC between after the related foundation, MSC is default to be provided, and neither needs MME to carry out above-mentioned subscription processing.For example, after the related foundation, MSC confirms that the CS of UE connects releases/terminations between MME and the MSC, and MSC notice MME current UE is in CS connection release/termination, in other words CS connection release/termination (this incident) is notified to MME.
Step 403:CS connects foundation.For example, UE sends CM Service Request-service request information to MSC.MSC confirms that CS connects foundation.
Step 404:MSC sends message to MME, for example, response message (Alert Ack), CS connects foundation with notice.After MME receives this response message, know that UE is in connection and sets up state in the CS territory.For example, sign UE is in the CS territory and connects the state of setting up in the UE context.
Step 405:CS connects release.For example, UE sends to MSC and disconnects (Disconnect) message, and request disconnects and connecting.MSC confirms that CS connects release/termination.
Step 406:MSC sends response message (Alert Ack) to MME, and CS connects release/termination with notice.After MME receives this response message, know that UE is in connection and discharges (connect and disconnect) state in the CS territory.For example, sign UE is in CS territory connection release condition in the UE context.
Connect release/termination for MSC to MME notice CS, can also be used to trigger the flow process that MME carries out recovering bearing.Concrete, MME knows that the CS of UE connects release/termination, is in suspended state if MME confirms the PS carrying of current UE, then MME can carry out the flow process of recovering bearing, as described in step 307.
Further, the PS carrying need be recovered the information notice MSC that finish when MME confirms to have finished the recovery of PS carrying, MME, and then MSC is resumed to the carrying of UE notice.As described in step 309.
UE confirms that carrying is resumed, and under the scene that ISR activates and return E-UTRAN and still be in TA registration or that preserve, does not then need to initiate TAU flow process recovering bearing.
This processing can be considered MSC and triggers MME and carry out the another kind of method of recovering packet bearer, the big and problem that reduces the ISR effect of the signaling consumption that causes in the time of can avoiding UE to initiate to recover packet bearer.
Subscribe under the prerequisite of CS connection status to MSC based on MME, realize that if desired MSC triggers MME and carries out and recover packet bearer, then MME needs to subscribe to CS to MSC at least and connects releases/termination, and specifically subscribing manner is as described in the step 302.In addition, this subscription can not need MME to confirm whether to activate ISR.
Step 407: downlink data arrives S-GW.
Step 408:S-GW sends downlink data notification message (Downlink Data Notification) to MME, to trigger MME paging UE.
Step 409: if MME confirms that UE is in the CS connection and sets up state, MME can select not paging UE so.For example, sign UE is in CS territory connection release condition in the UE context.
Present embodiment is known the connection situation of UE in the CS territory by MME, can avoid ineffertive pager, saves signaling consumption.
Fig. 5 is the structural representation of the mobile management entity of fourth embodiment of the invention, comprising: receiver module 51 and processing module 52; Receiver module 51 is used to receive first message that MSC sends; If processing module 52 is used for described first message and comprises that UE connects the indication information that disconnects in the CS territory, perhaps described first message indicates described MME to carry out recovery packet bearer flow process, then carries out and recovers the packet bearer flow process; Wherein, described first message is that described MSC determines to send when described UE connects disconnection in the CS territory.
In addition, processing module 52 can also be used for: connect the indication information of setting up in the CS territory if described first message comprises UE, then after the paging that receives the S-GW transmission triggers message, refuse the described UE of paging.
Recover the packet bearer flow process if described first message indicates described MME to carry out, then receiver module 51 can specifically be used for: subscribe to described MSC and trigger the message of recovering packet bearer; The described MME of indication that receives described MSC transmission carries out first message of recovering the packet bearer flow process, and first message that the described MME of described indication carries out recovery packet bearer flow process is: described MSC is knowing that described MME subscription triggers the message of recovering packet bearer and know that UE sends after the CS territory connects disconnection.
In addition, receiver module 51 can specifically be used for: after related foundation between the described MSC, first message that comprises the indication information that the connection of UE in the CS territory disconnect that receives that described MSC sends perhaps, comprises first message of the indication information that UE sets up in the connection in CS territory; Perhaps, described Mobility Management Entity also comprises: subscribing module, be used for subscribing to the active situation of UE in the CS territory to described MSC, so that described MSC comprises first message of UE at the indication information of the connection disconnection in CS territory in the described back of subscribing to described MME transmission, perhaps, comprise first message of UE at the indication information of the connection foundation in CS territory.Described subscribing module is subscribed to the active situation of UE in the CS territory to described MSC after can specifically being used for confirming to have activated ISR.
Present embodiment recovers packet bearer by MME indication S-GW, and the big and problem that reduces the ISR effect of the signaling consumption that causes in the time of can avoiding UE to initiate to recover packet bearer perhaps, is not carried out E-UTRAN to UE and can be avoided ineffertive pager.Therefore, present embodiment can reduce signaling consumption, ensures the effect of ISR mechanism, saves Internet resources.
Fig. 6 is the structural representation of the system of fifth embodiment of the invention, comprises MSC 61 and MME 62; MSC 61 is used for when knowing that UE connects disconnection in the CS territory, sends first message of the indication information that comprises that the connection of UE in the CS territory disconnects, and perhaps, indication MME carries out first message of recovery packet bearer flow process; MME 62 is used to receive first message of the described UE of comprising of described MSC transmission at the indication information of the connection disconnection in CS territory, perhaps, after the described MME of described indication carries out first message of recovering the packet bearer flow process, carries out recovery packet bearer flow process.
MSC 61 can also be used for: knowing UE after the CS territory connects foundation, transmission comprises first message of UE at the indication information of the connection foundation in CS territory; MME 62 can also be used for: receive first message of the described UE of comprising of described MSC transmission at the indication information of the connection foundation in CS territory, and after the paging that receives the S-GW transmission triggers message, the described UE of refusal paging.
MSC 61 can specifically be used to receive after the disconnection message that UE sends or after confirming that UE leaves dedicated mode, knows that UE connects in the CS territory to disconnect.Perhaps, receive after the service request information that UE sends or after confirming that UE enters dedicated mode, know that UE connects in the CS territory to set up.
MME 62 can be specifically as the 4th embodiment and shown in Figure 5.
Present embodiment recovers packet bearer by MME indication S-GW, and the big and problem that reduces the ISR effect of the signaling consumption that causes in the time of can avoiding UE to initiate to recover packet bearer perhaps, is not carried out E-UTRAN to UE and can be avoided ineffertive pager.Therefore, present embodiment can reduce signaling consumption, ensures the effect of ISR mechanism, saves Internet resources.
Fig. 7 is the structural representation of the subscriber equipment of sixth embodiment of the invention, comprises receiver module 71 and processing module 72; Receiver module 71 is used to receive the message of recovering the UE carrying that shows of MSC transmission, and the described message of recovering the UE carrying that shows is that described MSC sends after receiving the message that shows executed recovery packet bearer flow process of MME transmission; Processing module 72 be used for described receiver module receive described show the message of recovering UE carrying after, if confirm that ISR activates and still be in the TA of registration when returning E-UTRAN or during the TA of preservation, no longer initiate to be used for the TAU flow process of recovering bearing.
Present embodiment triggers the MME recovering bearing by MSC, and when UE after the recovering bearing still is in the TA of registration TA or preservation when ISR activates and returns E-UTRAN, no longer initiates the flow process of recovering bearing, signaling consumption that can the wireless access side.
Be understandable that the reference mutually of the correlated characteristic in said method and the equipment.In addition, " first " in the foregoing description, " second " etc. are to be used to distinguish each embodiment, and do not represent the quality of each embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (19)
1. a circuit switching fall-back CSFB method for processing business is characterized in that, comprising:
Mobile management entity MME receives first message that moving exchanging center MSC sends;
If described first message comprises user equipment (UE) and connects the indication information that disconnects in the circuit switching (CS) territory, perhaps described first message indicates described MME to carry out recovery packet bearer flow process, then carry out and recover the packet bearer flow process, wherein, described first message is that described MSC determines to send when described UE connects disconnection in the CS territory.
2. method according to claim 1 is characterized in that, also comprises:
If described first message comprises UE and connects the indication information of setting up in the CS territory that then described MME refuses the described UE of paging after the paging that receives gateway S-GW transmission triggers message.
3. method according to claim 2 is characterized in that, described UE connects foundation in the CS territory, comprising:
After described MSC receives the service request information of described UE transmission, know that described UE connects foundation in the CS territory; Perhaps,
After described MSC confirms that UE enters dedicated mode, know that described UE connects foundation in the CS territory.
4. method according to claim 1 is characterized in that, described UE connects disconnection in the CS territory, comprising:
After described MSC receives the disconnection message of described UE transmission, know that described UE connects disconnection in the CS territory; Perhaps,
After described MSC confirms that UE leaves dedicated mode, know that described UE connects disconnection in the CS territory.
5. method according to claim 1 is characterized in that, recovers the packet bearer flow process if described first message indicates described MME to carry out, and described MME receives first message that MSC sends, and comprising:
Described MME subscribes to described MSC and triggers the message of recovering packet bearer;
The described MME of indication that described MME receives described MSC transmission carries out first message of recovering the packet bearer flow process, and first message that the described MME of described indication carries out recovery packet bearer flow process is that described MSC is knowing that described MME subscription triggers the message of recovering packet bearer and know that UE sends after the CS territory connects disconnection.
6. method according to claim 1 and 2 is characterized in that, described MME receives first message that described MSC sends, and comprising:
Between described MME and the described MSC after the related foundation, described MME receives that described MSC sends comprises first message of the indication information that the connection of UE in the CS territory disconnect, and perhaps, comprises first message of the indication information that UE sets up in the connection in CS territory;
Perhaps, described MME subscribes to the active situation of UE in the CS territory to described MSC, comprise first message of UE so that described MSC subscribes to the back at described MME to described MME transmission, perhaps, comprise first message of UE at the indication information of the connection foundation in CS territory at the indication information of the connection disconnection in CS territory.
7. method according to claim 6 is characterized in that, described MME subscribes to the active situation of UE in the CS territory to described MSC, comprising:
MME sends subscribe message to MSC, and described subscribe message is used for MME and subscribes to UE in the active situation in CS territory to described MSC.
8. method according to claim 7 is characterized in that, described MME sends subscribe message to MSC, comprising:
Described MME sends subscribe message to described MSC after confirming to have activated saving signaling ISR.
9. method according to claim 1 is characterized in that, after described MME carried out and recovers the packet bearer flow process, described method also comprised:
Described MME sends to described MSC and shows the message of recovering the UE carrying;
Described MSC sends to UE and shows the message of recovering the UE carrying;
Described UE receive described show the message of recovering UE carrying after, if when still being in the TA of registration tracking area TA or preservation when confirming the ISR activation and returning evolved universal terrestrial radio access network E-UTRAN, no longer initiate to be used for the tracing section updating TAU flow process of recovering bearing.
10. a mobile management entity is characterized in that, comprising:
Receiver module is used to receive first message that moving exchanging center MSC sends;
Processing module comprises that user equipment (UE) connects the indication information that disconnects in the circuit switching (CS) territory if be used for described first message, and perhaps described first message indicates described MME to carry out recovery packet bearer flow process, then carries out and recovers the packet bearer flow process; Wherein, described first message is that described MSC determines to send when described UE connects disconnection in the CS territory.
11. mobile management entity according to claim 10, it is characterized in that, described processing module also is used for: connect the indication information of setting up in the circuit switching (CS) territory if described first message comprises user equipment (UE), then after the paging that receives gateway S-GW transmission triggers message, refuse the described UE of paging.
12. mobile management entity according to claim 10 is characterized in that, recovers the packet bearer flow process if described first message indicates described MME to carry out, described receiver module specifically is used for:
Subscribe to the message that triggers the recovery packet bearer to described MSC;
The described MME of indication that receives described MSC transmission carries out first message of recovering the packet bearer flow process, and first message that the described MME of described indication carries out recovery packet bearer flow process is: described MSC is knowing that described MME subscription triggers the message of recovering packet bearer and know that UE sends after the CS territory connects disconnection.
13. according to claim 10 or 11 described mobile management entities, it is characterized in that, described receiver module specifically is used for: after related foundation between the described MSC, first message that comprises the indication information that the connection of UE in the CS territory disconnect that receives that described MSC sends, perhaps, comprise first message of UE at the indication information of the connection foundation in CS territory;
Perhaps, described Mobility Management Entity also comprises:
Subscribing module, be used for subscribing to the active situation of UE in the CS territory to described MSC, so that described MSC comprises first message of UE at the indication information of the connection disconnection in CS territory in the described back of subscribing to described MME transmission, perhaps, comprise first message of UE at the indication information of the connection foundation in CS territory.
14. mobile management entity according to claim 13 is characterized in that, described subscribing module is subscribed to the active situation of UE in the CS territory to described MSC after specifically being used for confirming to have activated saving signaling ISR.
15. a circuit switching fall-back CSFB transaction processing system is characterized in that, comprising:
Moving exchanging center MSC is used for when knowing that user equipment (UE) connects disconnection in the circuit switching (CS) territory, sends to comprise that UE connects first message of the indication information that disconnects in the CS territory, and perhaps, indication MME execution recovers first message of packet bearer flow process;
Mobile management entity MME is used to receive first message of the described UE of comprising of described MSC transmission at the indication information of CS territory connection disconnection, perhaps, after described indication MME carries out first message of recovery packet bearer flow process, execution recovery packet bearer flow process.
16. system according to claim 15 is characterized in that,
Described MSC also is used for: knowing UE after the CS territory connects foundation, transmission comprises that UE connects first message of the indication information of setting up in the CS territory;
Described MME also is used for: the described UE of comprising that receives described MSC transmission connects first message of the indication information of setting up in the CS territory, and after the paging that receives gateway S-GW transmission triggers message, refuses the described UE of paging.
17. system according to claim 15 is characterized in that, described MSC specifically is used for:
Receive after the disconnection message that UE sends or after confirming that UE leaves dedicated mode, know that UE connects in the CS territory to disconnect.
18. system according to claim 16 is characterized in that, described MSC specifically is used for:
Receive after the service request information that UE sends or after confirming that UE enters dedicated mode, know that UE connects in the CS territory to set up.
19. a subscriber equipment is characterized in that, comprising:
Receiver module, be used to receive the message of recovering the UE carrying that shows of moving exchanging center MSC transmission, the described message of recovering the UE carrying that shows is that described MSC sends after receiving the message that shows executed recovery packet bearer flow process of mobile management entity MME transmission;
Processing module, be used for described receiver module receive described show the message of recovering UE carrying after, if confirm that saving signaling ISR activates and still be in the tracking area TA of registration when returning evolved universal terrestrial radio access network E-UTRAN or during the TA of preservation, no longer initiate to be used for the tracing section updating TAU flow process of recovering bearing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2011/072995 WO2011107041A2 (en) | 2011-04-19 | 2011-04-19 | Method and system for processing circuit switched fallback service, mobility management entity and user equipment |
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| WO2011107041A2 (en) | 2011-09-09 |
| WO2011107041A3 (en) | 2012-04-19 |
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