Embodiment
As stated in the Background Art, in LTE system, the high-priority service such as eMPS and IMS emergence call service have been introduced, compare with general service, network has higher priority when processing eMPS and IMS emergency business, when network is when higher load condition or overload can not keep the connection of general service, these high-priority service still can normally be linked in network.
In addition, in order to reside in the UE of LTE system, still can receive CS territory business, in LTE system, introduce CS Fallback mechanism.
When UE initiatively initiates or receives after the paging in CS territory, UE will return back to 2G/3G system receiving circuit territory business.If network is not supported the PS handoff procedure from source base station to target BS, after CS Fallback, UE will be released in the connection of LTE community and reselects to Target cell, and sets up CS territory with Target cell and be connected.Now, 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 activating or activating, and now UE has initiated the business in CS territory, or received the called of CS territory and while being redirected to 2G/3G system, high-priority service will be terminated, and has affected the continuity of high-priority service.In order to address this problem, the embodiment of the present invention has provided triggering reason or the content of the CS territory service request that a kind of basis is new, determines whether to carry out the method for processing business that CS Fallback processes.
As shown in Figure 1, the schematic flow sheet of a kind of method for processing business proposing for the embodiment of the present invention, is applied in LTE system, and the method specifically comprises the following steps:
Step S101, MME receive the CS territory service request of counterpart terminal equipment.
In actual applications, 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) paging request message that MSC sends to MME by SGs interface.
According to the type difference of CS territory service request, corresponding subsequent treatment 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 there is no, execution step S103;
If existed, execution step S104.
In concrete application scenarios, the concrete processing procedure of this step is: MME, according to the current corresponding business information record of terminal equipment and/or the corresponding contextual information of terminal equipment, judges the current high-priority service that activates or activating that whether exists of terminal equipment.
In actual applications, no matter which network equipment the promoter of high-priority service is, MME can have record to corresponding business information, and, if there is the high-priority service that has activated or activated in terminal equipment, in the contextual information of this terminal equipment, also certainly exist corresponding recorded information, MME also can determine the current high-priority service that has activated or activated that whether exists of this terminal equipment by the recorded information in contextual information, concrete employ information is for processing and can't affect protection scope of the present invention according to the judgement of carrying out this step.
Step S103, MME, according to CS territory service request, carry out CS Fallback to terminal equipment and process.
Step S104, MME, according to triggering reason or the content of CS territory service request, determine whether that terminal equipment is carried out to CS Fallback to be processed.
Two kinds of type of messages in corresponding step S101, the processing of this step also comprises following two kinds of situations 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, according to the triggering reason of this CS territory service request, determines whether that this terminal equipment is carried out to CS Fallback to be processed.
In such cases, the triggering reason of corresponding CS territory service request, specifically can determine in the following manner:
If mode one terminal equipment is to initiate CS territory service request at Idle state, MME, according to passing through the entrained RRC Cause information corresponding with terminal equipment in the received message of S1 interface, determines the triggering reason of CS territory service request.
If mode two terminal equipments are to initiate CS territory service request at connected state, MME, according to the Service Type information comprising in Extended Service Request message, determines the triggering reason of CS territory service request.
No matter, by which kind of above-mentioned mode, MME is after having determined the triggering reason of CS territory service request, and according to the particular type of corresponding triggering reason, the concrete processing of this step is divided into following several situation:
(1) when the triggering reason of MME judgement CS territory service request is normal business procedure triggering, MME refusal is carried out CS Fallback to terminal equipment and is processed.
Wherein, normal business procedure can be specifically normal MO CS Fallback or 1xCSFallback process, can be also normal MT CS Fallback or 1xCS Fallback process.
(2) when the triggering reason of MME judgement CS territory service request is high-priority service triggering, MME carries out CS Fallback to terminal equipment and processes.
Wherein, in above situation, high-priority service specifically comprises emergency (promptly) business in CS territory or eMPLL (enhanced Multi-Level Precedence and Preemption, the multipriority of enhancing and take the lead) business.
It is pointed out that for above-mentioned (1), the operation that MME refusal is carried out CS Fallback processing to terminal equipment is specially:
MME sends Service Reject (service denial) message to terminal equipment, in this Service Reject message, carries corresponding Reason For Denial indication information.
In concrete application scenarios, above-mentioned Reason For Denial indication information is specially CS domaintemporarily not available (CS territory temporarily can not be applied) information, or has high-priority service and can not carry out CS Fallback and process corresponding cause information with current.
Wherein, there is high-priority service and can not carry out CS Fallback to process corresponding cause information can be a kind of new cause value information of presetting with current; its concrete content can need to be set according to actual scene, and such variation does not affect 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 should terminal equipment paging request message time, MME, according to whether carrying high priority indication information in this CS territory service request, determines whether that this terminal equipment is carried out to CS Fallback to be processed.
Processing in such cases specifically comprises following flow process:
First, MME judges in paging request message, whether to carry high priority indication information.
If carried, MME determines that paging request message is to be triggered by high-priority service process, and MME determines that terminal equipment is carried out to CS Fallback to be processed, and to terminal equipment, sends the beep-page message in CS territory, carries out corresponding paging operation.
And if do not carry, MME determines that paging request message is not to be triggered by high-priority service process, MME refusal is carried out CS Fallback to terminal equipment and is processed.
In actual application scenarios, 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 refuse information, so that MSC suspends, to MME, sends the paging request message that common CS territory business triggers.
In concrete application scenarios, Reason For Denial indication information is specially Mobile terminating CSFallback call rejected by the user (MT CS rollback is called out and refused by user) information, or has high-priority service and can not carry out CS Fallback and process corresponding cause information with current terminal equipment.
Wherein, there is high-priority service and can not carry out CS Fallback to process corresponding cause information can be a kind of new cause value information of presetting with current; its concrete content can need to be set according to actual scene, and such variation does not affect protection scope of the present invention.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
The technical scheme proposing by the application embodiment of the present invention, can be in the situation that there is the high-priority service that activates or activating in terminal equipment, triggering reason or the content of the new CS territory service request of this terminal equipment being received by MME basis, determine that for this CS territory service request, whether carrying out CSFallback processes, thereby, avoid high-priority service to be interrupted because of general service, guarantee the continuity of high-priority service, when solution current priority business is conflicted mutually with CS territory service request, how preferentially to guarantee the problem that high-priority service is carried out.
Below, in conjunction with concrete enforcement scene, the technical side that the embodiment of the present invention is proposed is elaborated.
Corresponding aforesaid situation one, when MME has received the Extended Service Request message of UE transmission, MME judges now whether UE has the high-priority service that activates or activating, as eMPS business, IMS urgency traffic etc.
If judgment result is that existence, according to the triggering reason of Extended Service Request message, the corresponding following three kinds of situations that comprise of processing:
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 by the Service Type in the RRC cause in S1 message (if now UE is the Extended Service Request message of initiating at Idle state) or Extended ServiceRequest message (if now UE initiates Extended ServiceRequest message at connected state).
In order to prevent causing eMPS business or IMS emergency business not to keep after UE from returning back to 2G/3G system, MME will not carry out CSFallback process after receiving Extended Service Request message, but return to service reject message to UE, and carry cause#39 indication " CSdomain temporarily not available ".
The Extended Service Request message that situation B, UE send is by MT CS Fallback or 1xCS Fallback.
MME further judges whether this MT course is high-priority service, as the emergency of CS or eMLPP business.
If not MME does not carry out CS Fallback process, but return to service reject message to UE, and carry cause#39 indication " CS domain temporarily not available ".
If the CS process of this MT is high-priority service, 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 SGs interface triggers, MME need to judge whether UE now has the high-priority service of activation, if had, MME further judgement from the paging of SGs, trigger whether there is high priority indication (MSC sends in the paging request of MME can carry priority indication).
If triggering, paging there is no high priority indication, the paging that is SGs interface is to be caused by normal CS business, MME returns to refuse information to MSC, in refuse information, can use " Mobile terminatingCS Fallback call rejected by the user " this cause (cause value), also can redefine new cause for notifying MSC temporarily can not use at present because UE has high priority PS business CS Fallback call.MSC receives after this new cause and will within a period of time, suspend to MME and send the paging request that common CS business causes.
If paging triggers, have high priority indication, the beep-page message of SGs interface is that high-priority service by CS territory causes, 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 present invention proposes has the following advantages:
The technical scheme proposing by the application embodiment of the present invention, can be in the situation that there is the high-priority service that activates or activating in terminal equipment, triggering reason or the content of the new CS territory service request of this terminal equipment being received by MME basis, determine that for this CS territory service request, whether carrying out CSFallback processes, thereby, avoid high-priority service to be interrupted because of general service, guarantee the continuity of high-priority service, when solution current priority business is conflicted mutually with CS territory service request, 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 LTE system, and its structural representation as shown in Figure 2, specifically comprises:
Communication module 21, for receiving the CS territory service request of counterpart terminal equipment;
Judge module 22, when receiving the CS territory service request of counterpart terminal equipment when communication module 21, judges the current high-priority service that activates or activating that whether exists of terminal equipment.
In actual applications, judge module 22 specifically for:
According to the current corresponding business information record of terminal equipment and/or the corresponding contextual information of terminal equipment, judge the current high-priority service that activates or activating that whether exists of terminal equipment.
Processing module 23, for when judgment result is that of judge module 22 exists, according to triggering reason or the content of the received CS territory service request of communication module 21, determines whether that terminal equipment is carried out to CS Fallback to be processed.
Further, processing module 23 also for:
When the high-priority service that judgment result is that the current not activation of terminal equipment or activating of judge module 22, according to the received CS territory service request of communication module 21, terminal equipment is carried out to CS Fallback and process.
In concrete application scenarios, the CS territory service request of the counterpart terminal equipment that communication module 21 is received, specifically comprises the Extended Service Request message that terminal equipment sends, or the paging request message of the counterpart terminal equipment of MSC transmission, processing module 23, specifically 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 to CS Fallback to be processed; 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 high priority indication information in the service request of CS territory, determine whether that terminal equipment is carried out to CS Fallback to be processed.
Wherein, 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, processing module 23, specifically for:
When the triggering reason of CS territory service request is normal business procedure triggering, refusal is carried out CS Fallback to terminal equipment and is processed;
When the triggering reason of CS territory service request is high-priority service triggering, MME carries out CS Fallback to terminal equipment and processes;
Wherein, high-priority service, specifically comprises emergency business or the eMPLL business in CS territory.
Further, communication module 21, also for:
When processing module 23 determines that refusal is carried out CS Fallback processing to terminal equipment, to terminal equipment, send Service Reject message, in Service Reject message, carry corresponding Reason For Denial indication information;
Wherein, 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 process 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, specifically for judging whether carry high priority indication information in paging request message;
If carried, determine that paging request message is to be triggered by high-priority service process, terminal equipment is carried out to CS Fallback and process, and notify communication module 21 to terminal equipment, to send the beep-page message in CS territory;
If do not carried, determine that paging request message is not to be triggered by high-priority service process, refusal is carried out CS Fallback to terminal equipment and is processed, and notify communication module 21 to send refuse information to MSC, in refuse information, carry corresponding Reason For Denial indication information, so that MSC suspends, to MME, send the paging request message that common CS territory business triggers;
Wherein, Reason For Denial indication information is specially Mobile terminating CS Fallback callrejected by the user information, or has high-priority service and can not carry out CSFallback and process corresponding cause information with current terminal equipment.
Compared with prior art, the technical scheme that the embodiment of the present invention proposes has the following advantages:
The technical scheme proposing by the application embodiment of the present invention, can be in the situation that there is the high-priority service that activates or activating in terminal equipment, triggering reason or the content of the new CS territory service request of this terminal equipment being received by MME basis, determine that for this CS territory service request, whether carrying out CSFallback processes, thereby, avoid high-priority service to be interrupted because of general service, guarantee the continuity of high-priority service, when solution current priority business is conflicted mutually with CS territory service request, how preferentially to guarantee the problem that high-priority service is carried out.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, and the mode that also can add necessary general hardware platform by software realizes.Understanding based on such, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) carry out the present invention each implement the method described in scene.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram of preferably implementing scene, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in 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, just to describing, does not represent the quality of implementing scene.
Disclosed is above only several concrete enforcement scene of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into traffic limits scope of the present invention.