CN102457830A - Business processing method and equipment - Google Patents

Business processing method and equipment Download PDF

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Publication number
CN102457830A
CN102457830A CN2010105234623A CN201010523462A CN102457830A CN 102457830 A CN102457830 A CN 102457830A CN 2010105234623 A CN2010105234623 A CN 2010105234623A CN 201010523462 A CN201010523462 A CN 201010523462A CN 102457830 A CN102457830 A CN 102457830A
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China
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terminal equipment
mme
territory
service request
fallback
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CN2010105234623A
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CN102457830B (en
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张娟
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201010523462.3A priority Critical patent/CN102457830B/en
Priority to PCT/CN2011/079965 priority patent/WO2012051893A1/en
Publication of CN102457830A publication Critical patent/CN102457830A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The embodiment of the invention discloses a business processing method and equipment. The method comprises the following steps of: applying the technical scheme suggested by the embodiment of the invention; under the circumstances that terminal equipment can activate or is activating a high-priority business, confirming that the CS domain business request whether carries out CS Fallback processing according to the received triggering reason or content for a new CS domain business request for the terminal equipment by MME (Mobility Management Entity). Therefore, interrupting for the high-priority business due to a common business can be avoided, continuity of the high-priority business can be guaranteed, and a problem that how to preferentially guarantee the high-priority business to carry out when a current priority business is conflicted with the CS domain business request can be solved.

Description

Method for processing business and equipment
Technical field
The present invention relates to communication technical field, particularly a kind of method for processing business and equipment.
Background technology
The multimedia priority service is to allow state security department or the urgent user of preparation department to use the calling of high priority through public network.For this type business,,, also to guarantee this type traffic transmission like congestion state even network is in special state.The user of this type business is the individual of government authorization normally, the individual of urgent management organization or other mandates.
The multimedia service of evolution is supported IMS (IP Multimedia Subsystem; IP Multimedia System) processed of business; The processed that EPS (Evolved Packet System, evolved packet system) is professional and the processed of circuit domain business.For eMPS (enhancement forMultimedia Priority Service; The multimedia priority service that strengthens) caller or called service; Network provides processed end to end; Comprising that NAS (Non-Access-Stratum, Non-Access Stratum) and AS (Access-Stratum, Access Layer) signaling connect sets up process and core net and the wireless network side resource allocation process for carrying.
The emergency bearing business IMS emergent session that is used to provide support, the UE that the emergency bearing business can be used for normally adhering to (User Equipment, subscriber equipment) also can be used to be in the UE of unrestricted model state.Even when UE can not be resident to a suitable cell (proper cell); Perhaps UE does not insert SIM (Subscriber Identity Module; User identification module) card; When perhaps UE had received the response message (as be designated as " illegal UE ") of some Location Registration, UE still possibly initiate the emergency bearing business.
LTE (Long Time Evolved; Long Term Evolution) system only provides PS (Packet Switched; Packet switching) business is at 2G (2nd Generation, second generation GSM)/3G (3thGeneration; 3-G (Generation Three mobile communication system)) CS in the system (Circuit Switched, circuit switching) business can't directly realize in the LTE system.Yet; For the operator of the current 2G/3G network that has had a large scale deployment; They hope to protect the investment of its existing network as far as possible; Also need consider existing user on the other hand to the circuit-switched service demand, therefore, also can initiate or the receiving circuit reciprocal exchange of business after the LTE multimode terminal of hoping support circuit switched service is linked into the LTE system.
At present, to this problem, in the LTE system, introduced CS Fallback (circuit switching rollback) mechanism.The essence of CS Fallback is the multimode terminal that resides in the LTE network need set up the session in CS territory the time, and network return back to UE in the CS territory network of 2G/3G.In the whole voice conversation stage, UE always is positioned at CS territory network.After voice service finished, UE just can turn back in the LTE network.
UE can initiate circuit-switched service after returning back to the CS territory, but its packet switching service that in the LTE system, activates then can't be held in the CS territory in the relaying continuation of insurance.If terminal and rollback system can support the handoff procedure of packet switching, when CS Fallback then takes place, can the packet switching service carrying that UE activates in LTE be switched in the PS territory network of rollback system.If terminal or rollback system do not support the handoff procedure of packet switching, in a single day CS Fallback process then takes place, the packet switching service that UE activates will be terminated.
In realizing process of the present invention, the applicant finds that there is following problem at least in prior art:
If UE has activated or when to be ready activating a high-priority service, if UE has initiated CS Fallback process, then UE must return back in the 2G/3G system.If the rollback system does not support PS to switch, then in case the PS business that UE activates behind the CS Fallback takes place will be terminated, the high-priority service of activation also will be terminated, and have a strong impact on the continuity of high-priority service.
Summary of the invention
The present invention provides a kind of method for processing business and equipment, solves when current priority is professional to conflict with CS territory service request mutually, how preferentially to guarantee the problem that high-priority service is carried out.
For achieving the above object, one aspect of the present invention provides a kind of method for processing business, is applied in the LTE system, and said method comprises:
When MME received the CS territory service request of counterpart terminal equipment, said MME judged the current high-priority service that activates or activating that whether exists of said terminal equipment;
If exist, said MME determines whether that according to the triggering reason or the content of said CS territory service request said terminal equipment is carried out CS Fallback to be handled.
On the other hand, the present invention also provides a kind of MME, is applied to comprise in the LTE system:
Communication module is used to receive the CS territory service request of counterpart terminal equipment;
Judge module is used for when said communication module receives the CS territory service request of counterpart terminal equipment, judges the current high-priority service that activates or activating that whether exists of said terminal equipment;
Processing module is used in the judged result of said judge module according to the triggering reason or the content of the received CS territory service request of said communication module, determining whether that said terminal equipment is carried out CS Fallback to be handled when existing.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme that the embodiment of the invention proposed; Can exist under the situation of the high-priority service that activates or activating at terminal equipment; By triggering reason or the content of MME according to the new CS territory service request of this terminal equipment that receives, confirm that whether carrying out CSFallback for this CS territory service request handles, thereby; Avoid high-priority service to be interrupted because of general service; Guarantee the continuity of high-priority service, solve when current priority is professional to conflict with CS territory service request mutually, how preferentially to guarantee the problem that high-priority service is carried out.
Description of drawings
Fig. 1 is the schematic flow sheet of a kind of method for processing business of embodiment of the invention proposition;
Fig. 2 is the structural representation of a kind of MME that the embodiment of the invention proposed.
Embodiment
Of background technology; In the LTE system; Introduced high-priority service such as eMPS and IMS emergence call service, compared with general service, network has higher priority when handling eMPS and IMS emergency business; When network was in higher load condition or overload and can not keeps the connection of general service, these high-priority service still can normally be linked in the network.
In addition, for the UE that resides in the LTE system still can receive CS territory business, in the LTE system, introduced CS Fallback mechanism.
After UE initiatively initiated or receives the paging in CS territory, it is professional that UE will return back to 2G/3G system receiving circuit territory.If network is not supported the PS handoff procedure from the source base station to the target BS, behind the CS Fallback, UE will be released in the connection of LTE sub-district and reselect to Target cell, and set up the CS territory with Target cell and be connected.At this moment, UE can only receive the business in CS territory, and can not receive the business in PS territory.
According to foregoing description; If UE has had the high-priority service that activates or activating, and this moment, UE initiated the business in CS territory, had perhaps received the called of CS territory and when being redirected to the 2G/3G system; High-priority service will be terminated, and has influenced the continuity of high-priority service.In order to address this problem, the embodiment of the invention has provided the triggering reason or the content of the new CS territory service request of a kind of basis, determines whether to carry out the method for processing business that CS Fallback handles.
As shown in Figure 1, the schematic flow sheet of a kind of method for processing business that proposes for the embodiment of the invention is applied in the LTE system, and this method specifically may further comprise the steps:
Step S101, MME receive the CS territory service request of counterpart terminal equipment.
In practical application, in this step, the received CS territory service request of MME can comprise following two kinds:
(1) terminal equipment sends to Extended Service Request (lengthening service request) message of MME.
(2) MSC is through the paging request message of SGs interface to the MME transmission.
According to the type difference of CS territory service request, corresponding subsequent processing also can be distinct, specifically will in the description of subsequent step, describe.
Step S102, MME judge the current high-priority service that activates or activating that whether exists of terminal equipment.
If do not exist, execution in step S103;
If there is execution in step S104.
In concrete application scenarios; The concrete processing procedure of this step is: MME judges the current high-priority service that activates or activating that whether exists of terminal equipment according to current pairing business information record of terminal equipment and/or the pairing contextual information of terminal equipment.
In practical application; No matter which network equipment the promoter of high-priority service is; MME can have record to corresponding business information; And,, also certainly exist corresponding recorded information in the contextual information of this terminal equipment if there is the high-priority service that has activated or activated in terminal equipment; MME also can confirm the current high-priority service that has activated or activated that whether exists of this terminal equipment through the recorded information in the contextual information, and concrete employ information is for influencing protection scope of the present invention according to the judgment processing of carrying out this step.
Step S103, MME carry out CS Fallback to terminal equipment and handle according to CS territory service request.
Step S104, MME determine whether that according to the triggering reason or the content of CS territory service request terminal equipment is carried out CS Fallback to be handled.
Two kinds of type of messages among the corresponding step S101, the processing of this step also comprises following two kinds of situation accordingly:
When the CS territory service request of situation one, the counterpart terminal equipment that receives as MME is specially the Extended Service Request message that this terminal equipment sends; MME determines whether that according to the triggering reason of this CS territory service request this terminal equipment is carried out CS Fallback to be handled.
In such cases, the triggering reason of corresponding CS territory service request, specifically can confirm in the following manner:
If mode one terminal equipment is to initiate CS territory service request at Idle state, MME confirms the triggering reason of CS territory service request according to through entrained and the corresponding RRC Cause of terminal equipment information in the received message of S1 interface.
If mode two terminal equipments are to initiate CS territory service request at connected state, MME confirms the triggering reason of CS territory service request according to the Service Type information that is comprised in the Extended Service Request message.
No matter through which kind of above-mentioned mode, MME is after the triggering reason of having confirmed CS territory service request, and according to the particular type of relative trigger reason, the concrete processing of this step is divided into following several kinds of situation:
(1) be normal business procedure when triggering when MME judges the triggering reason of CS territory service request, the MME refusal is carried out CS Fallback to terminal equipment and is handled.
Wherein, normal business procedure specifically can be normal MO CS Fallback or 1xCSFallback process, also can be normal MT CS Fallback or 1xCS Fallback process.
(2) when MME judges that the triggering reason of CS territory service request is the high-priority service triggering, MME carries out CS Fallback to terminal equipment and handles.
Wherein, in above situation, high-priority service specifically comprises emergency (promptly) business or eMPLL (enhanced Multi-Level Precedence and Preemption, the multipriority of enhancing with the take the lead) business in CS territory.
It is pointed out that for above-mentioned (1) operation that the MME refusal is carried out CS Fallback processing to terminal equipment is specially:
MME sends Service Reject (service denial) message to terminal equipment, carries corresponding Reason For Denial indication information in this Service Reject message.
In concrete application scenarios; Above-mentioned Reason For Denial indication information is specially CS domaintemporarily not available (the CS territory temporarily can not be used) information, or has high-priority service and can not carry out CS Fallback and handle corresponding cause information with current.
Wherein, There is high-priority service and can not carries out CS Fallback to handle corresponding cause information can be a kind of new cause value information of presetting with current; Its concrete content can be set according to the scene needs of reality, and such variation does not influence protection scope of the present invention.
The CS territory service request of situation two, the counterpart terminal equipment that receives as MME be specially that MSC sends to paging request message that should terminal equipment the time; MME determines whether that according to whether carrying the high priority indication information in this CS territory service request this terminal equipment is carried out CS Fallback to be handled.
Processing in such cases specifically comprises following flow process:
At first, MME judges whether carry the high priority indication information in the paging request message.
If carry, MME confirms that paging request message is to be triggered by the high-priority service process, and MME confirms that terminal equipment is carried out CS Fallback to be handled, and sends the beep-page message in CS territory to terminal equipment, carries out corresponding paging operation.
And if do not carry, MME confirms that paging request message is not to be triggered by the high-priority service process, the MME refusal is carried out CS Fallback to terminal equipment and is handled.
In the application scenarios of reality, the realization flow that above-mentioned MME refusal is carried out the operation of CS Fallback processing to terminal equipment is specially:
MME sends refuse information to MSC, carries corresponding Reason For Denial indication information in the refuse information, sends the professional paging request message that is triggered in common CS territory so that MSC suspends to MME.
In concrete application scenarios; The Reason For Denial indication information is specially Mobile terminating CSFallback call rejected by the user (MT CS rollback call out by user refusal) information, or has high-priority service with current terminal equipment and can not carry out CS Fallback and handle corresponding cause information.
Wherein, There is high-priority service and can not carries out CS Fallback to handle corresponding cause information can be a kind of new cause value information of presetting with current; Its concrete content can be set according to the scene needs of reality, and such variation does not influence protection scope of the present invention.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme that the embodiment of the invention proposed; Can exist under the situation of the high-priority service that activates or activating at terminal equipment; By triggering reason or the content of MME according to the new CS territory service request of this terminal equipment that receives, confirm that whether carrying out CSFallback for this CS territory service request handles, thereby; Avoid high-priority service to be interrupted because of general service; Guarantee the continuity of high-priority service, solve when current priority is professional to conflict with CS territory service request mutually, how preferentially to guarantee the problem that high-priority service is carried out.
Below, the enforcement scene in conjunction with concrete is elaborated to the technology side that the embodiment of the invention proposed.
Corresponding aforesaid situation one, when MME had received the Extended Service Request message of UE transmission, MME judged this moment, whether UE had the high-priority service that activates or activating, like eMPS business, IMS urgency traffic etc.
If judged result is for existing, then according to the triggering reason of Extended Service Request message, the corresponding following three kinds of situation that comprise of handling:
The Extended Service Request message that situation A, UE send is to be triggered by normal MO CSFallback or 1xCS Fallback process.
Concrete triggering reason, MME can obtain through the Service Type in RRC cause in the S1 message (if UE this moment is the Extended Service Request message of initiating at Idle state) or the Extended ServiceRequest message (if UE this moment initiates Extended ServiceRequest message at connected state).
In order to prevent to cause the professional perhaps IMS emergency business of eMPS not keep after UE from returning back to the 2G/3G system; MME will not carry out the CSFallback process after receiving Extended Service Request message; But return service reject message, and carry cause#39 indication " CSdomain temporarily not available " to UE.
The Extended Service Request message that situation B, UE send is by MT CS Fallback or 1xCS Fallback.
MME judges further whether this MT course is high-priority service, and is professional like emergency or the eMLPP of CS.
If not then MME does not carry out CS Fallback process, but return service reject message, and carry cause#39 indication " CS domain temporarily not available " to UE.
If the CS process of this MT is a high-priority service, then MME will carry out CS Fallback process after receiving Extended ServiceRequest message.
Corresponding aforesaid situation two; If MME receives that the paging of the MSC that MSC transmits from the SGs interface triggers; MME need judge this moment, whether UE had the high-priority service of activation; If have, then MME further judges paging from SGs triggers whether the high priority indication is arranged (MSC sends in the paging request of MME can carry the priority indication).
If triggering, paging do not have the high priority indication; The paging that is the SGs interface is to be caused by normal CS business; Then MME returns refuse information to MSC; In refuse information, can use " Mobile terminatingCS Fallback call rejected by the user " this cause (cause value), also can define new cause again and be used to notify MSC temporarily can not use at present owing to UE has the professional CS Fallback of high priority PS call.MSC receives will in a period of time, suspend to MME behind this new cause and sends the paging request that common CS business causes.
If paging triggers the high priority indication is arranged, promptly the beep-page message of SGs interface is that high-priority service by the CS territory causes that then MME carries out normal processes, initiates the beep-page message in CS territory to UE.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme that the embodiment of the invention proposed; Can exist under the situation of the high-priority service that activates or activating at terminal equipment; By triggering reason or the content of MME according to the new CS territory service request of this terminal equipment that receives, confirm that whether carrying out CSFallback for this CS territory service request handles, thereby; Avoid high-priority service to be interrupted because of general service; Guarantee the continuity of high-priority service, solve when current priority is professional to conflict with CS territory service request mutually, how preferentially to guarantee the problem that high-priority service is carried out.
In order to realize technical scheme of the present invention, the present invention also provides a kind of MME, is applied in the LTE system, and its structural representation is as shown in Figure 2, specifically comprises:
Communication module 21 is used to receive the CS territory service request of counterpart terminal equipment;
Judge module 22 is used for when communication module 21 receives the CS territory service request of counterpart terminal equipment, judges the current high-priority service that activates or activating that whether exists of terminal equipment.
In practical application, judge module 22 specifically is used for:
According to current pairing business information record of terminal equipment and/or the pairing contextual information of terminal equipment, judge the current high-priority service that activates or activating that whether exists of terminal equipment.
Processing module 23 is used in the judged result of judge module 22 when existing, and triggering reason or content according to the received CS territory service request of communication module 21 determine whether that terminal equipment is carried out CS Fallback to be handled.
Further, processing module 23 also is used for:
In the judged result of judge module 22 when to be that terminal equipment is current exist the high-priority service that activates or activating,, terminal equipment is carried out CS Fallback handle according to the received CS territory service request of communication module 21.
In concrete application scenarios; The CS territory service request of the counterpart terminal equipment that communication module 21 is received, the Extended Service Request message that specifically comprises terminal equipment and sent, or the paging request message of the counterpart terminal equipment that sends of MSC; Processing module 23 specifically is used for:
When the CS territory service request of the received counterpart terminal equipment of communication module 21 is specially the Extended Service Request message that terminal equipment sends; According to the triggering reason of CS territory service request, determine whether that terminal equipment is carried out CS Fallback to be handled; Or,
When the CS territory service request of the received counterpart terminal equipment of communication module 21 is specially the paging request message of the counterpart terminal equipment that MSC sends; According to whether carrying the high priority indication information in the service request of CS territory, determine whether that terminal equipment is carried out CS Fallback to be handled.
Wherein, when the CS territory service request of the received counterpart terminal equipment of communication module 21 was specially the Extended Service Request message that terminal equipment sends, processing module 23 specifically was used for:
When the triggering reason of CS territory service request is a normal business procedure when triggering, refusal is carried out CS Fallback to terminal equipment and is handled;
When the triggering reason of CS territory service request was the high-priority service triggering, MME carried out CS Fallback to terminal equipment and handles;
Wherein, high-priority service comprises that specifically the emergency business in CS territory or eMPLL are professional.
Further, communication module 21 also is used for:
When processing module 23 confirms that refusal is carried out CS Fallback processing to terminal equipment, send Service Reject message to terminal equipment, carry corresponding Reason For Denial indication information in the Service Reject message;
Wherein, the Reason For Denial indication information is specially CS domain temporarily not available information, or has high-priority service and can not carry out CS Fallback and handle corresponding cause information with current.
On the other hand; When the CS territory service request of the received counterpart terminal equipment of communication module 21 is specially the paging request message of the counterpart terminal equipment that MSC sends; Processing module 23 is used for specifically judging whether paging request message carries the high priority indication information;
If carry, confirm that then paging request message is to be triggered by the high-priority service process, terminal equipment is carried out CS Fallback handle, and notifying communication module 21 is sent the beep-page message in CS territory to terminal equipment;
If do not carry; Confirm that then paging request message is not to be triggered by the high-priority service process; Refusal is carried out CS Fallback to terminal equipment and is handled; And notifying communication module 21 sends refuse information to MSC, carries corresponding Reason For Denial indication information in the refuse information, sends the professional paging request message that is triggered in common CS territory so that MSC suspends to MME;
Wherein, The Reason For Denial indication information is specially Mobile terminating CS Fallback callrejected by the user information, or has high-priority service with current terminal equipment and can not carry out CSFallback and handle corresponding cause information.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme that the embodiment of the invention proposed; Can exist under the situation of the high-priority service that activates or activating at terminal equipment; By triggering reason or the content of MME according to the new CS territory service request of this terminal equipment that receives, confirm that whether carrying out CSFallback for this CS territory service request handles, thereby; Avoid high-priority service to be interrupted because of general service; Guarantee the continuity of high-priority service, solve when current priority is professional to conflict with CS territory service request mutually, how preferentially to guarantee the problem that high-priority service is carried out.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize through hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding; Technical scheme of the present invention can be come out with the embodied of software product, this software product can be stored in a non-volatile memory medium (can be CD-ROM, USB flash disk; Portable hard drive etc.) in; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) each implements the described method of scene to carry out the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is a preferred sketch map of implementing scene, module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of implementing scene just to description.
More than disclosedly be merely several practical implementation scene of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into traffic limits scope of the present invention.

Claims (17)

1. method for processing business is applied to it is characterized in that in the LTE system that said method comprises:
When MME received the CS territory service request of counterpart terminal equipment, said MME judged the current high-priority service that activates or activating that whether exists of said terminal equipment;
If exist, said MME determines whether that according to the triggering reason or the content of said CS territory service request said terminal equipment is carried out CS Fallback to be handled.
2. the method for claim 1 is characterized in that, said MME judges the current high-priority service that activates or activating that whether exists of said terminal equipment, specifically comprises:
Said MME judges the current high-priority service that activates or activating that whether exists of said terminal equipment according to current pairing business information record of said terminal equipment and/or the pairing contextual information of said terminal equipment.
3. the method for claim 1 is characterized in that, when MME received the CS territory service request of counterpart terminal equipment, said MME judged that said terminal equipment is current and whether exist after the high-priority service that activates or activating that said method also comprises:
If said MME judges the current high-priority service that activates or activating that do not exist of said terminal equipment, said MME carries out CSFallback to said terminal equipment and handles according to said CS territory service request.
4. the method for claim 1 is characterized in that, said MME receives the CS territory service request of counterpart terminal equipment, specifically comprises:
Said MME receives the Extended Service Request message that said terminal equipment sends; Or,
Said MME receives the paging request message of the corresponding said terminal equipment of MSC transmission.
5. like claim 1 or 4 described methods, it is characterized in that said MME determines whether that according to the triggering reason or the content of said CS territory service request said terminal equipment is carried out CS Fallback to be handled, and is specially:
When the CS territory service request of the counterpart terminal equipment that receives as said MME is specially the Extended Service Request message that said terminal equipment sends; Said MME determines whether that according to the triggering reason of said CS territory service request said terminal equipment is carried out CS Fallback to be handled; Or,
When the CS territory service request of the counterpart terminal equipment that receives as said MME is specially the paging request message of the corresponding said terminal equipment that said MSC sends; Said MME determines whether that according to whether carrying the high priority indication information in the service request of said CS territory said terminal equipment is carried out CSFallback to be handled.
6. method as claimed in claim 5 is characterized in that, the triggering reason of said CS territory service request is specifically confirmed in the following manner:
If said terminal equipment is to initiate said CS territory service request at Idle state; Said MME confirms the triggering reason of said CS territory service request according to through entrained and the corresponding RRC Cause of said terminal equipment information in the received message of S1 interface; Or,
If said terminal equipment is to initiate said CS territory service request at connected state, said MME confirms the triggering reason of said CS territory service request according to the Service Type information that is comprised in the said Extended Service Request message.
7. method as claimed in claim 5; It is characterized in that; When the CS territory service request of the counterpart terminal equipment that receives as said MME is specially the Extended ServiceRequest message that said terminal equipment sends; Said MME determines whether that according to the triggering reason of said CS territory service request said terminal equipment is carried out CS Fallback to be handled, and specifically comprises:
When said MME judges the triggering reason of said CS territory service request is normal business procedure when triggering, and said MME refusal is carried out CS Fallback to said terminal equipment and handled;
When said MME judged that the triggering reason of said CS territory service request is the high-priority service triggering, said MME carried out CS Fallback to said terminal equipment and handles;
Wherein, said high-priority service comprises that specifically the emergency business in CS territory or eMPLL are professional.
8. method as claimed in claim 7 is characterized in that, said MME refusal is carried out CS Fallback to said terminal equipment and handled, and is specially:
Said MME sends Service Reject message to said terminal equipment, carries corresponding Reason For Denial indication information in the said Service Reject message;
Wherein, said Reason For Denial indication information is specially CS domain temporarily not available information, or has high-priority service and can not carry out CS Fallback and handle corresponding cause information with current.
9. method as claimed in claim 5; It is characterized in that; When the CS territory service request of the counterpart terminal equipment that receives as said MME is specially the paging request message of the corresponding said terminal equipment that said MSC sends; Said MME determines whether that according to whether carrying the high priority indication information in the service request of said CS territory said terminal equipment is carried out CS Fallback to be handled, and is specially:
Said MME judges whether carry the high priority indication information in the said paging request message;
If carry, said MME confirms that said paging request message is to be triggered by the high-priority service process, and said MME confirms that said terminal equipment is carried out CS Fallback to be handled, and sends the beep-page message in CS territory to said terminal equipment;
If do not carry, said MME confirms that said paging request message is not to be triggered by the high-priority service process, and said MME refusal is carried out CS Fallback to said terminal equipment and handled.
10. method as claimed in claim 9 is characterized in that, said MME refusal is carried out CS Fallback to said terminal equipment and handled, and specifically comprises:
Said MME sends refuse information to said MSC, carries corresponding Reason For Denial indication information in the said refuse information, sends the professional paging request message that is triggered in common CS territory so that said MSC suspends to said MME;
Wherein, Said Reason For Denial indication information is specially Mobile terminating CS Fallback callrejected by the user information, or has high-priority service with current terminal equipment and can not carry out CSFallback and handle corresponding cause information.
11. a MME is applied to it is characterized in that in the LTE system, comprising:
Communication module is used to receive the CS territory service request of counterpart terminal equipment;
Judge module is used for when said communication module receives the CS territory service request of counterpart terminal equipment, judges the current high-priority service that activates or activating that whether exists of said terminal equipment;
Processing module is used in the judged result of said judge module according to the triggering reason or the content of the received CS territory service request of said communication module, determining whether that said terminal equipment is carried out CS Fallback to be handled when existing.
12. MME as claimed in claim 11 is characterized in that, said judge module specifically is used for:
According to current pairing business information record of said terminal equipment and/or the pairing contextual information of said terminal equipment, judge the current high-priority service that activates or activating that whether exists of said terminal equipment.
13. MME as claimed in claim 11 is characterized in that, said processing module also is used for:
,, said terminal equipment is carried out CS Fallback handle when to be that said terminal equipment is current exist the high-priority service that activates or activating in the judged result of said judge module according to the received CS territory service request of said communication module.
14. MME as claimed in claim 11; It is characterized in that; The CS territory service request of the counterpart terminal equipment that said communication module is received, the ExtendedService Request message that specifically comprises said terminal equipment and sent, or the paging request message of the corresponding said terminal equipment that sends of MSC; Said processing module specifically is used for:
When the CS territory service request of the received counterpart terminal equipment of said communication module is specially the Extended Service Request message that said terminal equipment sends; According to the triggering reason of said CS territory service request, determine whether that said terminal equipment is carried out CS Fallback to be handled; Or,
When the CS territory service request of the received counterpart terminal equipment of said communication module is specially the paging request message of the corresponding said terminal equipment that said MSC sends; According to whether carrying the high priority indication information in the service request of said CS territory, determine whether that said terminal equipment is carried out CS Fallback to be handled.
15. MME as claimed in claim 14; It is characterized in that; When the CS territory service request of the received counterpart terminal equipment of said communication module was specially the ExtendedService Request message that said terminal equipment sends, said processing module specifically was used for:
When the triggering reason of said CS territory service request is a normal business procedure when triggering, refusal is carried out CS Fallback to said terminal equipment and is handled;
When the triggering reason of said CS territory service request was the high-priority service triggering, said MME carried out CS Fallback to said terminal equipment and handles;
Wherein, said high-priority service comprises that specifically the emergency business in CS territory or eMPLL are professional.
16. MME as claimed in claim 15 is characterized in that, said communication module also is used for:
When said processing module confirms that refusal is carried out CS Fallback processing to said terminal equipment, send Service Reject message to said terminal equipment, carry corresponding Reason For Denial indication information in the said Service Reject message;
Wherein, said Reason For Denial indication information is specially CS domain temporarily not available information, or has high-priority service and can not carry out CS Fallback and handle corresponding cause information with current.
17. MME as claimed in claim 14; It is characterized in that; When the CS territory service request of the received counterpart terminal equipment of said communication module is specially the paging request message of the corresponding said terminal equipment that said MSC sends; Said processing module is used for specifically judging whether said paging request message carries the high priority indication information;
If carry, confirm that then said paging request message is to be triggered by the high-priority service process, said terminal equipment is carried out CS Fallback handle, and notify said communication module to send the beep-page message in CS territory to said terminal equipment;
If do not carry; Confirm that then said paging request message is not to be triggered by the high-priority service process; Refusal is carried out CS Fallback to said terminal equipment and is handled; And notify said communication module to send refuse information to said MSC, and carry corresponding Reason For Denial indication information in the said refuse information, so that suspending to said MME, said MSC sends the professional paging request message that is triggered in common CS territory;
Wherein, Said Reason For Denial indication information is specially Mobile terminating CS Fallback callrejected by the user information, or has high-priority service with current terminal equipment and can not carry out CSFallback and handle corresponding cause information.
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