CN105637954B - A kind of downstream circuitry exchange falls the paging processing method and equipment of CSFB after rise - Google Patents

Abstract

The paging processing method and equipment for falling CSFB after rise are exchanged the invention discloses a kind of downstream circuitry, for solving the problem of in the prior art when MME is using S-TMSI paging UE due to there is no the S-TMSI for saving TMSI and UE being caused to be not responding to MME initiation to page in UE.Method includes: that UE receives the request message that MME is sent, and the request message is for requesting UE to initiate CSFB process and being responded after falling back to the domain CS network using TMSI；If UE does not save TMSI, which sends to MME and is used to indicate the instruction information for not saving TMSI in the UE, so that MME, which is returned, is used to indicate the IMSI instruction that the UE is responded using IMSI；UE is indicated according to the IMSI that MME is returned, and sends the page response of the IMSI including itself to the base station target 2G/3G in CSFB process.

Description

A kind of downstream circuitry exchange falls the paging processing method and equipment of CSFB after rise

Technical field

The present invention relates to wireless communication technology field, in particular to a kind of downstream circuitry exchange falls (Circuit after rise Switched Fallback, CSFB) paging processing method and equipment.

Background technique

Evolved packet system (Evolved Packet System, abbreviation EPS) is third generation cooperative partner program (3rd Generation Partnership Project, abbreviation 3GPP) in the second generation (The Second Generation, abbreviation 2G) mobile communications network (i.e. GSM/EDGE:Global System of Mobile Communication/Enhanced Data Rate for GSM Evolution, global system for mobile communications/enhanced data rates for gsm evolution technology；GSM: Global System for Mobile, global mobile communication) and the third generation (The Third Generation, abbreviation 3G) shifting Dynamic communication network (i.e. UMTS:Universal Mobile Telecommunications System, universal mobile communications system System) on the basis of release.EPS network includes evolved universal mobile communication system land radio access web (Evolved Universal Mobile Telecommunication System Territorial Radio Access Network, letter Claim E-UTRAN) and evolution block core net (Evolved Packet Core Network, abbreviation EPC), EPS network can only mention For packet switch (Packet Switched, abbreviation PS) business.

Based on mobile switching center/visitor location register (Mobile Switching in existing 2G/3G network Center/Visitors Location Register, abbreviation MSC/VLR) and mobile management entity (Mobility Management Entity, abbreviation MME) between SGs interface function, 3GPP propose " circuit switching fall-back " (referred to as CSFB) technology and SGs short message transmission (Short Message Service over SGs, abbreviation SMS over SGs) skill Art.User equipment (User Equipment, abbreviation UE) under CSFB technology covers E-UTRAN is needing processing circuit to exchange When (Circuit Switched, abbreviation CS) voice service, the domain 2G/3G network C S is fallen back to by E-UTRAN, with finishing service Processing.SMS over SGs technology allows the UE resided under E-UTRAN to reuse the existing domain CS to realize the transmission of CS short message.

In above-mentioned CSFB and SMS over SGs mechanism, resides in E-UTRAN and support CSFB and/or SMS over The UE of SGs needs to initiate combined registering process, registers while realization to EPC network PS field with the network C domain S 2G/3G.In success After realizing combined registering, the short message service of the CSFB business and uplink and downlink of uplink and downlink could be initiated normally.

Under the scene for deploying MSC resource pool (MSC Pool), for the downlink CS business of Idle state UE, when UE is resident In 2G/3G network, IMSI International Mobile Subscriber Identity (the International Mobile of UE is used for the MSC/VLR of UE service Subscriber Identity, abbreviation IMSI) initiate paging can be normally carried out.But when UE resides in E-UTRAN, it is The MSC/VLR of UE service will appear problem using the paging that the IMSI of UE is initiated, because falling back to the domain 2G/3G network C S in UE Afterwards, the UE received the page response sent can not be sent to the MSC/ that this paging is initiated in MSC Pool by the base station 2G/3G VLR, so as to cause downlink CS service fail.In order to solve this problem, the prior art has modified the paging policy on MME, i.e., without It is paged on SGs interface using IMSI or TMSI by MSC/VLR, MME is uniformly paged using S-TMSI under any scene UE, so that UE carries out page response using TMSI after falling back to the domain 2G/3G CS.But in the field of non-MSC Pool Under scape, it is very normal for not distributing TMSI, if MME uniformly uses S-TMSI paging UE, according to the response policy of current UE, if Without saving TMSI in UE, then the UE does not respond to the S-TMSI paging of MME initiation, also results in the called failure of CS.

Summary of the invention

The paging processing method and equipment for falling CSFB after rise are exchanged the embodiment of the invention provides a kind of downstream circuitry, for solving Certainly in the prior art when MME is using S-TMSI paging UE, due to causing UE to be not responding to MME without saving TMSI in UE and initiating S-TMSI paging the problem of.

In a first aspect, a kind of downstream circuitry exchange falls the paging processing method of CSFB after rise, this method comprises:

User equipment (UE) receives the request message that mobile management entity MME is sent, and the request message is described for requesting UE initiates circuit switching fall-back CSFB process and uses Temporary Mobile Subscriber Identity after falling back to circuit-switched CS domain network TMSI is responded；

If the UE does not save TMSI, the UE sends to the MME and is used to indicate the finger for not saving TMSI in the UE Show information, so that MME return is used to indicate the UE and is referred to using the IMSI that IMSI International Mobile Subscriber Identity IMSI is responded Show；

The UE is indicated according to the IMSI that the MME is returned, to the target second generation/third generation in the CSFB process The base station 2G/3G sends the page response including the IMSI.

With reference to first aspect, in the first possible implementation, the request message are as follows: paging message or CS industry Business notification message.

The possible implementation of with reference to first aspect the first, in the second possible implementation, the paging It include the S-TMSI of the UE in message；Alternatively, including paging mark cell, the paging mark in the CS service announcements message The value for knowing cell is used to indicate the UE and is responded using TMSI.

Second of possible implementation of the possible implementation of with reference to first aspect the first or first aspect, In the third possible implementation, if the request message is the CS service announcements message and the UE is in the free time State, the method also includes:

After the UE receives packet switched ps domain paging message of the MME using the S-TMSI transmission of UE, from the free time State enters connected state, wherein the domain CN in the ps domain paging message is PS.

With reference to first aspect, second of the possible implementation of the first of first aspect or first aspect it is possible Implementation, in the fourth possible implementation, the UE are used to indicate in the UE to MME transmission and do not save The instruction information of TMSI, comprising:

The UE sends request message of activating business to the MME, carries in the request message of activating business for referring to Show the instruction information for not saving TMSI in the UE.

The 4th kind of possible implementation with reference to first aspect, in a fifth possible implementation, the instruction Information is CSFB response.

With reference to first aspect, the possible implementation of the first of first aspect, first aspect second of possible reality Now the 4th kind of possible implementation or first party of mode, the third possible implementation of first aspect, first aspect The 5th kind of possible implementation in face, in a sixth possible implementation, if the request message further includes mobile industry Be engaged in the global core network identifier CN ID of switching centre/visiting location register MSC/VLR, and the MSC/VLR is located at MSC resource Chi Zhong, this method further include:

The UE sends the IMSI and the overall situation CN of the UE in the CSFB process to the base station the target 2G/3G ID, so that the base station the target 2G/3G is that the UE determines the MSC/VLR according to the overall situation CN ID.

Second aspect, a kind of downstream circuitry exchange fall the paging processing method of CSFB after rise, this method comprises:

Mobile management entity MME sends request message to user equipment (UE), and the request message is for requesting the UE to send out Rise circuit switching fall-back CSFB process and after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI into Row response；

After the MME is used to indicate the instruction information for not saving TMSI in the UE receive that the UE sends, to The UE, which is sent, is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI.

In conjunction with second aspect, in the first possible implementation, the request message are as follows: paging message or CS industry Business notification message.

In conjunction with the first possible implementation of second aspect, in the second possible implementation, the paging Message further includes the S-TMSI of the UE；Alternatively, the CS service announcements message further includes paging mark cell, the paging mark The value for knowing cell is used to indicate the UE and is responded using TMSI.

In conjunction with the first possible implementation of second aspect or second of possible implementation of second aspect, In the third possible implementation, if the request message is the CS service announcements message and the UE is in the free time State, the method also includes:

The MME sends packet switched ps domain paging message to the UE using the S-TMSI of the UE, so that the UE Into connected state, wherein the domain core net CN in the ps domain paging message is PS.

In conjunction with the first possible implementation of second aspect, second aspect, second of possible reality of second aspect The third possible implementation of existing mode or second aspect, in the fourth possible implementation, the MME is received The instruction information of TMSI is not saved in the UE to being used to indicate of sending of the UE, comprising:

The MME receives the request message of activating business that the UE is sent, and carries and uses in the request message of activating business In the instruction information for indicating not saving TMSI in the UE.

In conjunction with the 4th kind of possible implementation of second aspect, in a fifth possible implementation, the instruction Information is CSFB response.

In conjunction with the first possible implementation of second aspect, second aspect, second of possible reality of second aspect Now the 4th kind of possible implementation or second party of mode, the third possible implementation of second aspect, second aspect The 5th kind of possible implementation in face, in a sixth possible implementation, this method further include:

The MME is by the UE or evolved node B eNodeB, to the target second generation/base station third generation 2G/3G The IMSI and the global core network identifier CN ID of mobile services switching centre/visiting location register MSC/VLR are sent, with After so that the UE is fallen back to the base station the target 2G/3G, the base station the target 2G/3G is the UE according to the overall situation CN ID Determine the MSC/VLR.

In conjunction with the 6th kind of possible implementation of second aspect, in the 7th kind of possible implementation, the MME is logical It crosses the eNodeB and sends the IMSI and overall situation CN ID to the base station the target 2G/3G, comprising:

Notification message including the IMSI and overall situation CN ID is sent to the eNodeB by the MME, so that institute It states eNodeB and the IMSI and the overall situation CN ID is sent to the base station the target 2G/3G, wherein the notification message are as follows: Paging message or downlink transmit message.

The third aspect, a kind of user equipment (UE), the UE include:

First unit, for receiving the request message of mobile management entity MME transmission, the request message is for requesting institute It states UE belonging to first unit and initiates circuit switching fall-back CSFB process and after falling back to circuit-switched CS domain network using facing When mobile user identification TMSI responded；

Second unit, if the UE does not save TMSI, Xiang Suoshu MME transmission, which is used to indicate in the UE, does not save TMSI's Information is indicated, so that MME return is used to indicate the IMSI that the UE is responded using IMSI International Mobile Subscriber Identity IMSI Instruction；

Third unit, for being returned according to the MME IMSI instruction, in the CSFB process to the target second generation/ The base station third generation 2G/3G sends the page response including the IMSI.

In conjunction with the third aspect, in the first possible implementation, the request message are as follows: paging message or CS industry Business notification message.

In conjunction with the first possible implementation of the third aspect, in the second possible implementation, the paging It include the S-TMSI of the UE in message；Alternatively, including paging mark cell, the paging mark in the CS service announcements message The value for knowing cell is used to indicate the UE and is responded using TMSI.

In conjunction with the first possible implementation of the third aspect or second of possible implementation of the third aspect, In the third possible implementation, if the request message is the CS service announcements message and the UE is in the free time State, the first unit are also used to:

Receive the MME using UE S-TMSI send packet switched ps domain paging message after, make the UE from Idle state enters connected state, wherein the domain CN in the ps domain paging message is PS.

In conjunction with the first possible implementation of the third aspect, the third aspect, second of possible reality of the third aspect The third possible implementation of existing mode or the third aspect, in the fourth possible implementation, the second unit It is specifically used for:

Request message of activating business is sent to the MME, is carried in the request message of activating business described in being used to indicate The instruction information of TMSI is not saved in UE.

In conjunction with the 4th kind of possible implementation of the third aspect, in a fifth possible implementation, the instruction Information is CSFB response.

In conjunction with the first possible implementation of the third aspect, the third aspect, second of possible reality of the third aspect Now the 4th kind of possible implementation or third party of mode, the third possible implementation of the third aspect, the third aspect The 5th kind of possible implementation in face, in a sixth possible implementation, if the request message further includes mobile industry Be engaged in the global core network identifier CN ID of switching centre/visiting location register MSC/VLR, and the MSC/VLR is located at MSC resource Chi Zhong, the third unit are also used to:

The IMSI and the overall situation CN ID of the UE is sent to the base station the target 2G/3G in the CSFB process, with The base station the target 2G/3G is set to determine the MSC/VLR according to the overall situation CN ID UE.

Fourth aspect, a kind of user equipment (UE), the UE include:

Transceiver, for receiving the request message of mobile management entity MME transmission, the request message is described for requesting UE belonging to transceiver is initiated circuit switching fall-back CSFB process and is moved after falling back to circuit-switched CS domain network using interim Dynamic user identifier TMSI is responded；If the UE does not save TMSI, Xiang Suoshu MME transmission, which is used to indicate in the UE, not to be saved The instruction information of TMSI, so that MME return is used to indicate the UE and is responded using IMSI International Mobile Subscriber Identity IMSI IMSI instruction；

Processor, the IMSI instruction for being returned according to the MME, in the CSFB process, makes transceiver to target The second generation/base station third generation 2G/3G sends the page response including the IMSI.

In conjunction with fourth aspect, in the first possible implementation, the request message are as follows: paging message or CS industry Business notification message.

In conjunction with the first possible implementation of fourth aspect, in the second possible implementation, the paging It include the S-TMSI of the UE in message；Alternatively, including paging mark cell, the paging mark in the CS service announcements message The value for knowing cell is used to indicate the UE and is responded using TMSI.

In conjunction with the first possible implementation of fourth aspect or second of possible implementation of fourth aspect, In the third possible implementation, if the request message is the CS service announcements message and the UE is in the free time State, transceiver are also used to:

Receive the MME using UE S-TMSI send packet switched ps domain paging message after, make the UE from Idle state enters connected state, wherein the domain CN in the ps domain paging message is PS.

In conjunction with the first possible implementation of fourth aspect, fourth aspect, second of possible reality of fourth aspect The third possible implementation of existing mode or fourth aspect, in the fourth possible implementation, transceiver is specifically used In:

Request message of activating business is sent to the MME, is carried in the request message of activating business described in being used to indicate The instruction information of TMSI is not saved in UE.

In conjunction with the 4th kind of possible implementation of fourth aspect, in a fifth possible implementation, the instruction Information is CSFB response.

In conjunction with the first possible implementation of fourth aspect, fourth aspect, second of possible reality of fourth aspect Existing mode, the third possible implementation of fourth aspect, the 4th kind of possible implementation of fourth aspect or four directions The 5th kind of possible implementation in face, in a sixth possible implementation, if the request message further includes mobile industry Be engaged in the global core network identifier CN ID of switching centre/visiting location register MSC/VLR, and the MSC/VLR is located at MSC resource Chi Zhong, transceiver are also used to:

The IMSI and the overall situation CN ID of the UE is sent to the base station the target 2G/3G in the CSFB process, with The base station the target 2G/3G is set to determine the MSC/VLR according to the overall situation CN ID UE.

5th aspect, a kind of mobile management entity MME, the MME include:

First module, for sending request message to user equipment (UE), the request message is for requesting the UE to initiate Circuit switching fall-back CSFB process is simultaneously carried out after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI Response；

Second module, for not saving the instruction information of TMSI in the UE in being used to indicate of receiving that the UE sends Afterwards, Xiang Suoshu UE, which is sent, is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI.

In conjunction with the 5th aspect, in the first possible implementation, the request message are as follows: paging message or CS industry Business notification message.

In conjunction with the first possible implementation of the 5th aspect, in the second possible implementation, the paging Message further includes the S-TMSI of the UE；Alternatively, the CS service announcements message further includes paging mark cell, the paging mark The value for knowing cell is used to indicate the UE and is responded using TMSI.

In conjunction with the 5th aspect the first possible implementation or the 5th aspect second of possible implementation, In the third possible implementation, if the request message is the CS service announcements message and the UE is in the free time State, first module are also used to:

Packet switched ps domain paging message is sent to the UE using the S-TMSI of the UE, so that the UE enters connection State, wherein the domain core net CN in the ps domain paging message is PS.

In conjunction with second of possible reality in terms of the 5th aspect, the first possible implementation of the 5th aspect, the 5th The third possible implementation of existing mode or the 5th aspect, in the fourth possible implementation, second module Receive the UE transmission is used to indicate the instruction information for not saving TMSI in the UE, comprising:

The request message of activating business that the UE is sent is received, is carried in the request message of activating business and is used to indicate institute State the instruction information for not saving TMSI in UE.

In conjunction with the 4th kind of possible implementation of the 5th aspect, in a fifth possible implementation, the instruction Information is CSFB response.

In conjunction with second of possible reality in terms of the 5th aspect, the first possible implementation of the 5th aspect, the 5th Existing mode, the third possible implementation of the 5th aspect, the 4th kind of possible implementation of the 5th aspect or the 5th side The 5th kind of possible implementation in face, in a sixth possible implementation, the MME further include:

Third module, for passing through the UE or evolved node B eNodeB, to the target second generation/third generation 2G/ NodeB sends the IMSI and global core network identifier CN of mobile services switching centre/visiting location register MSC/VLR ID, so that the base station the target 2G/3G is institute according to the overall situation CN ID after the UE falls back to the base station the target 2G/3G It states UE and determines the MSC/VLR.

In conjunction with the 6th kind of possible implementation of the 5th aspect, in the 7th kind of possible implementation, the third Module sends the IMSI and overall situation CN ID to the base station the target 2G/3G by the eNodeB, comprising:

Notification message including the IMSI and overall situation CN ID is sent to the eNodeB, so that described The IMSI and the overall situation CN ID are sent to the base station the target 2G/3G by eNodeB, wherein the notification message are as follows: seek Message or downlink is exhaled to transmit message.

6th aspect, a kind of mobile management entity MME, the MME include:

Transmitter, for sending request message to user equipment (UE), the request message is for requesting the UE to initiate electricity Road exchange is fallen after rise CSFB process and is rung after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI It answers；

Receiver, for not saving the instruction information of TMSI in the UE in being used to indicate of receiving that the UE sends Afterwards, make transmitter be used to indicate the UE to UE transmission to refer to using the IMSI that IMSI International Mobile Subscriber Identity IMSI is responded Show.

In conjunction with the 6th aspect, in the first possible implementation, the request message are as follows: paging message or CS industry Business notification message.

In conjunction with the first possible implementation of the 6th aspect, in the second possible implementation, the paging Message further includes the S-TMSI of the UE；Alternatively, the CS service announcements message further includes paging mark cell, the paging mark The value for knowing cell is used to indicate the UE and is responded using TMSI.

In conjunction with the 6th aspect the first possible implementation or the 6th aspect second of possible implementation, In the third possible implementation, if the request message is the CS service announcements message and the UE is in the free time State, transmitter are also used to:

Packet switched ps domain paging message is sent to the UE using the S-TMSI of the UE, so that the UE enters connection State, wherein the domain core net CN in the ps domain paging message is PS.

In conjunction with second of possible reality in terms of the 6th aspect, the first possible implementation of the 6th aspect, the 6th The third possible implementation of existing mode or the 6th aspect, in the fourth possible implementation, receiver receives What the UE was sent is used to indicate the instruction information for not saving TMSI in the UE, comprising:

The request message of activating business that the UE is sent is received, is carried in the request message of activating business and is used to indicate institute State the instruction information for not saving TMSI in UE.

In conjunction with the 4th kind of possible implementation of the 6th aspect, in a fifth possible implementation, the instruction Information is CSFB response.

In conjunction with second of possible reality in terms of the 6th aspect, the first possible implementation of the 6th aspect, the 6th Existing mode, the third possible implementation of the 6th aspect, the 4th kind of possible implementation of the 6th aspect or the 6th side The 5th kind of possible implementation in face, in a sixth possible implementation, transmitter is also used to:

By the UE or evolved node B eNodeB, to described in the target second generation/base station third generation 2G/3G transmission The IMSI and global core network identifier CN ID of mobile services switching centre/visiting location register MSC/VLR, so that the UE After falling back to the base station the target 2G/3G, the base station the target 2G/3G is described in the UE is determined according to the overall situation CN ID MSC/VLR。

In conjunction with the 6th kind of possible implementation of the 6th aspect, in the 7th kind of possible implementation, transmitter is logical It crosses the eNodeB and sends the IMSI and overall situation CN ID to the base station the target 2G/3G, comprising:

Notification message including the IMSI and overall situation CN ID is sent to the eNodeB, so that described The IMSI and the overall situation CN ID are sent to the base station the target 2G/3G by eNodeB, wherein the notification message are as follows: seek Message or downlink is exhaled to transmit message.

In method and apparatus provided in an embodiment of the present invention, due to being used to indicate to MME transmission when UE does not save TMSI The instruction information of TMSI is not saved in the UE, so that MME, which is returned, is used to indicate the IMSI instruction that UE is responded using IMSI, from And the IMSI that UE can be returned according to MME is indicated, is responded in CSFB process using the IMSI of the UE.Although in this way, UE In do not save TMSI, but in CSFB process, the IMSI that the UE can be used is responded, so as to avoid the mistake of downlink CS business It loses.

Detailed description of the invention

Fig. 1 is that a kind of downstream circuitry exchange of side MME provided by the invention falls the paging processing method flow chart of CSFB after rise；

Fig. 2 is that a kind of downstream circuitry exchange of side UE provided by the invention falls the paging processing method flow chart of CSFB after rise；

Fig. 3 is the flow chart of embodiment one provided by the invention；

Fig. 4 is the flow chart of embodiment two provided by the invention；

Fig. 5 is the flow chart of embodiment three provided by the invention；

Fig. 6 is the schematic diagram of the first user equipment (UE) provided by the invention；

Fig. 7 is the schematic diagram of second of user equipment (UE) provided by the invention；

Fig. 8 is the schematic diagram of the first mobile management entity MME provided by the invention；

Fig. 9 is the schematic diagram of second of mobile management entity MME provided by the invention.

Specific embodiment

The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.It should be appreciated that described herein Embodiment only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention, it is clear that described embodiment be the present invention A part of the embodiment, rather than whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, all should belong to the scope of protection of the invention.

In embodiments of the present invention, user equipment (UE) (User Equipment) can for it is following any one, and UE It can be static state, be also possible to movement.UE can include but is not limited to: platform (Station), mobile station (Mobile Station), subscriber unit (Subscriber Unit), PC (Personal Computer), laptop computer (Laptop Computer), tablet computer (Tablet Computer), net book (Netbook), UE (Terminal), honeycomb Phone (Cellular Phone), handheld device (Handheld), wireless phone (Cordless Phone), personal digital assistant (Personal Digital Assistant, abbreviation PDA), data card (Data Card), USB insertion equipment, mobile WiFi heat It is point device (MiFi Devices), smartwatch, intelligent glasses, radio modem (Modem), wireless router, wireless Local loop (Wireless Local Loop, abbreviation WLL) platform etc..Above-mentioned UE can be distributed in entire wireless network.It is mobile Switching centre MSC and VLR Visitor Location Register VLR, which is usually closed, is set as same network element, referred to as MSC/VLR, or referred to as VLR.

In embodiments of the present invention, evolved node B eNodeB is that the base station of E-UTRAN access service is provided for UE. The second generation/base station third generation 2G/3G can be the base station sub-system (Base Station Subsystem, BSS) in 2G network, Or the wireless network subsystem (Radio Network Subsystem, RNS) in 3G network.

The present inventor has found under study for action, and during combined registering, MSC/VLR may initiate temporarily moved subscriber mark Know the allocation flow of (Temporary Mobile Subscriber Identity, abbreviation TMSI), distributes TMSI for UE.In portion Under the scene for having affixed one's name to MSC/VLR resource pool (MSC Pool), can have in same position region (Location Area) multiple MSC/VLR provides service for UE.In order to uniquely identify the different MSC/VLR in same MSC Pool, in combined registering mistake Cheng Zhong, MSC/VLR are usually that UE distribution contains network resource identifier (the Network Resource of registered MSC/VLR Identifier, abbreviation NRI) TMSI.UE saves the TMSI of MSC/VLR distribution in register flow path.

After combined registering success, in the downlink page of subsequent downlink CS business triggering, MSC/VLR executes following paging Strategy: if MSC/VLR is that the UE is assigned with TMSI, MSC/VLR initiates the SGs interface paging to MME using TMSI；If MSC/ VLR is not UE distribution TMSI, then MSC/VLR uses IMSI International Mobile Subscriber Identity (International Mobile Subscriber Identity, abbreviation IMSI) it initiates to arrive the SGs interface paging of MME.MME after receiving SGs interface paging, Execute following paging policy: if SGs interface is paged using TMSI, MME pages UE using S-TMSI；If SGs interface uses IMSI paging, then MME pages UE using IMSI.UE is fallen back to after receiving the paging request of MME executing CSFB process Behind the domain 2G/3G CS, following response policy is executed: if receiving S-TMSI paging, being responded using TMSI；If receiving IMSI paging, then responded using IMSI.

Under the scene for deploying MSC Pool, due to that can there are multiple MSC/VLR to provide for UE in same position region Service, at this point, the base station (BSS/RNS) of 2G/3G network cannot ensure page response road if UE is responded using IMSI By easily leading to called CS service fail to the MSC/VLR for initiating paging.In order to solve this problem, the prior art has modified on MME Paging policy, i.e., no matter MSC/VLR is paged on SGs interface using IMSI or TMSI, and MME is unified under any scene UE is paged using S-TMSI, so that UE carries out page response using TMSI after falling back to the domain 2G/3G CS.

But MSC/VLR still can carry out SGs interface paging using IMSI under following two scene: (1) according to MSC/ The SGs interface paging strategy being arranged on VLR carries out SGs interface paging using IMSI.For example, paging policy are as follows: page for the first time Using TMSI, if paging failure, second of paging continues to use TMSI, if also failing, IMSI is used in third time paging instead.(2) If the TMSI allocation flow failure that MSC/VLR is initiated, MSC/VLR think that newly assigned TMSI is unreliable in the state of the side UE, At this point, MSC/VLR, which still will use IMSI, carries out SGs interface paging.If MME uniformly uses S-TMSI to page UE, according to current UE Response policy, if in UE without save TMSI, the UE do not respond to MME initiation S-TMSI paging, also result in CS Called failure.

The embodiment of the present invention can be adapted for following two application scenarios:

The first application scenarios is under non-MSC pool scene, since MME instruction UE is used after falling back to the domain CS network TMSI is responded, and does not preserve legal TMSI in the UE, so that UE is not responding to the S-TMSI paging of MME initiation, thus Lead to downlink CS service fail；

Second of application scenarios is under MSC pool scene, since MME instruction UE is used after falling back to the domain CS network TMSI is responded, and does not preserve legal TMSI in the UE, so that UE is not responding to the S-TMSI paging of MME initiation, thus Lead to downlink CS service fail.

It there is problems under second of application scenarios: due to that can there are multiple MSC/VLR to be in same position region UE provides service, at this point, the base station (BSS/RNS) of 2G/3G network cannot ensure to page if UE is responded using IMSI Response is routed to the MSC/VLR for initiating paging, easily leads to called CS service fail.

A kind of downstream circuitry exchange of side UE provided in an embodiment of the present invention falls the paging processing method of CSFB, such as Fig. 1 after rise It is shown, this method comprises:

S11, UE receive the request message that MME is sent, the request message for request the UE initiate CSFB process and It is responded after falling back to the domain CS network using TMSI；

If S12, UE do not save TMSI, UE sends to MME and is used to indicate the instruction information for not saving TMSI in the UE, so that MME, which is returned, is used to indicate the IMSI instruction that the UE IMSI is responded；

S13, UE indicate that sending in CSFB process to the base station target 2G/3G includes itself according to the IMSI that MME is returned The page response of IMSI.

Wherein, which is the response message for initiating MME request UE CSFB process.

In the embodiment of the present invention, due to being used to indicate in the UE to MME transmission and not saving TMSI when UE does not save TMSI Instruction information so that MME is returned and is used to indicate the IMSI that UE is responded using IMSI and indicates, thus, UE can be according to MME The IMSI of return is indicated, is responded in CSFB process using the IMSI of the UE.In this way, although TMSI is not saved in UE, In CSFB process, the IMSI that the UE can be used is responded, so as to avoid downlink CS service fail.

Illustrate the treatment process of the embodiment of the present invention from above two application scenarios separately below.

Under the first application scenarios, in S11, when UE receives the request message that MME is sent, not according to UE current state Together, further again include the preferred implementation of following two:

If one, UE is in Idle state, which is the paging message for paging UE, and including in the paging message should The S-TMSI of UE；

Under which, UE receives MME by providing the eNodeB of the service paging for being used to page the UE sent for the UE Message carries the S-TMSI of the UE in the paging message.

Specifically, MME sends the paging message for paging the UE to the eNodeB for providing service for the UE, which disappears It include the S-TMSI of UE in breath, so that eNodeB is sent the S-TMSI of the UE by the paging message of eating dishes without rice or wine for paging the UE The UE is given, so that the UE be made to be responded after falling back to the domain CS network using the TMSI of the UE.

Under which, domain core net (Core Network, CN) in the paging message that MME is sent to eNodeB is set as "CS"；CN domain of the eNodeB into the paging message of eating dishes without rice or wine that UE is sent is set as " CS ".

If two, UE is in connected state, it includes seeking in the CS service announcements message which, which is CS service announcements message, Mark (Paging identity) cell is exhaled, the value of paging mark cell is used to indicate the UE and is paged using TMSI Response.

Under which, UE receives MME and is disappeared by the CS service announcements that bottom signaling connection existing between the UE is sent Breath.

Under second of application scenarios, request message further includes the global CN ID of MSC/VLR, which mentioned for the UE MSC/VLR and the MSC/VLR for service are located in MSC resource pool.Correspondingly, UE receives the request that MME is sent and disappears in S11 When breath, according to the difference of UE current state, further preferred implementation is included the following three types again:

If one, UE is in Idle state, it includes the UE's in the paging message that the request message that UE is received, which is paging message, The global CN ID of S-TMSI and MSC/VLR, the MSC/VLR are to provide the MSC/VLR and the MSC/VLR of service for the UE to be located at In MSC resource pool.

Wherein, the paging message include MME be sent to for the UE service eNodeB paging message and the eNodeB hair Give the paging message (paging message of such as eating dishes without rice or wine) of UE.

Under which, MME to eNodeB send paging message, and in the paging message comprising the UE S-TMSI and The global CN ID of MSC/VLR, so that the global CN ID of the S-TMSI of UE and the MSC/VLR are sent to the UE by eNodeB. ENodeB is after receiving the paging message of the global CN ID for the S-TMSI and MSC/VLR for carrying UE of MME transmission, to UE Transmission is eated dishes without rice or wine paging message, and carries in the paging message of eating dishes without rice or wine the global CN ID of the S-TMSI and the MSC/VLR of the UE.

Under which, the domain CN in the paging message that MME is sent to eNodeB is set as " CS "；ENodeB is sent to UE The domain CN eated dishes without rice or wine in paging message is set as " CS ".

If two, UE is in Idle state, the UE is before the request message for receiving MME transmission, further includes:

UE receives packet switch (Packet Switch, PS) domain paging message that MME is sent using the S-TMSI of the UE Afterwards, enter connected state from Idle state, wherein the domain CN in the ps domain paging message is PS.

Specifically, MME sends the paging message for paging UE to eNodeB using S-TMSI, the CN in the paging message Domain is set as " PS ".Correspondingly, eNodeB sends the paging message of eating dishes without rice or wine for paging UE to UE using S-TMSI, this eats dishes without rice or wine to seek The domain CN in message is exhaled to be set as " PS ".Correspondingly, sending business to MME by eNodeB after UE receives the paging message of eating dishes without rice or wine Request (Service Request) message is responded, at this point, the state of the UE switchs to connected state by Idle state.

Under which, after the UE enters connected state, the request message that MME is sent is received, which is CS business Notification message includes the global CN ID of paging mark cell and MSC/VLR, paging mark letter in the CS service announcements message The value of member, which is used to indicate, carries out page response using TMSI, which is that the MSC/VLR and the MSC/ of service are provided for the UE VLR is located in MSC resource pool.

Specifically: after UE enters connected state, receive the CS business that MME utilizes existing bottom signaling connection to send to the UE The value of notification message, the global CN ID comprising paging mark cell and MSC/VLR in the message, paging mark cell is used for Instruction carries out page response using TMSI.

Under which, the UE of Idle state is first switched to connected state by MME, then paging is identified to the overall situation of cell and MSC/VLR CN ID is sent to the UE, to avoid the length for increasing paging message of eating dishes without rice or wine and increase unnecessary paging time delay and paging money Source expense.

If three, UE is in connected state, the request message that UE is received is CS service announcements message, the CS service announcements message In include paging mark cell and MSC/VLR global CN ID, the value of paging mark cell is used to indicate and carried out using TMSI Page response, the MSC/VLR are to provide the MSC/VLR and the MSC/VLR of service for the UE to be located in MSC resource pool.

Specifically, UE receives the CS service announcements message that MME utilizes existing bottom signaling connection to send to the UE, this disappears It include the global CN ID of paging mark cell and MSC/VLR in breath.

It should be noted that the global CN ID of MSC/VLR is defined by operator, it is configured by O&M mode, The global CN ID of MSC/VLR includes public land mobile network mark (the Public Land Mobile Network of operator Identifier, PLMN ID) with the global CN ID of the CN ID, MSC/VLR of MSC/VLR can in operator PLMN it is unique One MSC/VLR of mark.Typically, in the case where deploying MSC Pool scene, MSC/VLR can be carried in SGs paging message The global CN ID of itself.

Under second of application scenarios, preferably, this method further include:

UE sends the global CN of the IMSI and the MSC/VLR of the UE in CSFB process to the base station target 2G/3G ID, so that the base station the target 2G/3G is that the UE determines the MSC/VLR according to the global CN ID of the MSC/VLR.

Under second of application scenarios, preferably, after UE receives the request message that MME is sent, this method is also in S11 It include: the global CN ID for the MSC/VLR that UE caching receives；

In S13, after UE sends the page response of the IMSI including the UE to the base station 2G/3G, this method further include: UE is deleted Except the global CN ID of the MSC/VLR cached.

Specifically, UE executes CS business in the target side domain 2G/3G CS after being successfully established CS signaling connection；In the CS industry After business, which can delete the MSC/VLR overall situation CN ID of caching.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, it is specific that UE initiates CSFB process Are as follows: the UE sends request (Extended Service Request) message of activating business to MME, and triggering MME initiation is arrived The CSFB of eNodeB falls process after rise, and it is the prior art that entire CSFB, which falls process after rise, referring specifically to 23.272 agreement of 3GPP TS.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, in S12, UE to MME transmission is used to indicate the instruction information for not saving TMSI in the UE, comprising:

UE sends request message of activating business to MME, carries in the request message of activating business and is used to indicate the UE In do not save the instruction information of TMSI.

Preferably, the instruction information is CSFB response (CSFB response value).

Based on the same inventive concept, a kind of downstream circuitry exchange of side MME provided in an embodiment of the present invention falls CSFB's after rise Paging processing method, as shown in Fig. 2, this method comprises:

S21, MME send request message to UE, and the request message is for requesting UE to initiate CSFB process and falling back to CS It is responded after the network of domain using TMSI；

S22, MME receive UE transmission be used to indicate the instruction information for not saving TMSI in the UE after, to UE send The UE is used to indicate to indicate using the IMSI that IMSI is responded.

In the embodiment of the present invention, since MME does not save the instruction of TMSI receiving being used to indicate for UE transmission in the UE After information, is sent to the UE and be used to indicate the IMSI instruction that the UE is responded using IMSI, so that UE is falling back to the domain CS net After network, if not saving TMSI in the UE, the IMSI that the UE also can be used is responded, so as to avoid the mistake of downlink CS business It loses.

Illustrate the treatment process of the embodiment of the present invention from above two application scenarios separately below.

Different according to the current state of UE under the first application scenarios, the request message that MME is sent to UE in S21 is not yet Together, the preferred implementation of following two is specifically included:

If one, UE is in Idle state, it includes UE in the paging message which, which is the paging message for paging UE, S-TMSI；

Specifically, MME sends the paging message for paging the UE to the eNodeB for providing service for the UE, which disappears It include the S-TMSI of UE in breath, so that eNodeB is sent the S-TMSI of the UE by the paging message of eating dishes without rice or wine for paging the UE The UE is given, so that the UE be made to be responded after falling back to the domain CS network using the TMSI of the UE.

Under which, the domain CN in the paging message that MME is sent to eNodeB is set as " CS "；ENodeB is sent to UE The domain CN eated dishes without rice or wine in paging message is set as " CS ".

If two, UE is in connected state, it includes seeking in the CS service announcements message which, which is CS service announcements message, Mark (Paging identity) cell is exhaled, the value of paging mark cell is used to indicate the UE and is paged using TMSI Response.

Specifically, MME sends CS service announcements message to the UE by bottom signaling connection existing between UE.

Under second of application scenarios, request message further includes the global CN ID of MSC/VLR, which mentioned for the UE MSC/VLR and the MSC/VLR for service are located in MSC resource pool.Correspondingly, it is different according to UE current state, in S21 The request message that MME is sent to UE is also different, specifically includes the preferred implementation of following two:

If one, UE is in Idle state, the request message that MME is sent to UE is paging message, and including in the paging message should The global CN ID of the S-TMSI and MSC/VLR of UE, the MSC/VLR are that the MSC/VLR and the MSC/VLR of service are provided for the UE In MSC resource pool.

Wherein, the paging message include MME be sent to for the UE service eNodeB paging message and the eNodeB hair Give the paging message (paging message of such as eating dishes without rice or wine) of UE.

Specifically, MME sends the paging message for paging UE to eNodeB, it include the S-TMSI of UE in the paging message With the global CN ID for the MSC/VLR for initiating paging so that eNodeB is by the paging message of eating dishes without rice or wine for paging UE by the S- of UE TMSI and overall situation CN ID are sent to the UE.ENodeB is in the S-TMSI and MSC/VLR for carrying UE for receiving MME transmission Global CN ID paging message after, eat dishes without rice or wine paging message to UE transmission, and the S- of the UE is carried in the paging message of eating dishes without rice or wine The global CN ID of TMSI and the MSC/VLR.

Under this method, the domain CN in the paging message that MME is sent to eNodeB is set as " CS "；ENodeB is sent to UE The domain CN eated dishes without rice or wine in paging message is set as " CS ".

If two, UE is in Idle state, and MME is sent to UE before request message, further includes: MME using UE S-TMSI to UE sends ps domain paging message, so that UE enters connected state, wherein the domain CN in ps domain paging message is PS.

Specifically, MME sends the paging message for paging UE to eNodeB using S-TMSI, the CN in the paging message Domain is set as " PS ".Correspondingly, eNodeB sends the paging message of eating dishes without rice or wine for paging UE to UE using S-TMSI, this eats dishes without rice or wine to seek The domain CN in message is exhaled to be set as " PS ".Correspondingly, sending business to MME by eNodeB after UE receives the paging message of eating dishes without rice or wine Request (Service Request) message is responded, at this point, the state of the UE switchs to connected state by Idle state.

Under which, after UE enters connected state, the request message that MME is sent to the UE is CS service announcements message, should It include the global CN ID of paging mark (Paging identity) cell and MSC/VLR, the paging in CS service announcements message Mark cell value be used to indicate using TMSI carry out page response, the MSC/VLR be provided for the UE service MSC/VLR and The MSC/VLR is located in MSC resource pool.

Under which, the UE of Idle state is first switched to connected state by MME, then paging is identified to the overall situation of cell and MSC/VLR CN ID is sent to the UE, to avoid the length for increasing paging message of eating dishes without rice or wine and increase unnecessary paging time delay and paging money Source expense.

If three, UE is in connected state, the request message that MME is sent to UE is CS service announcements message, the CS service announcements It include the global CN ID of paging mark cell and MSC/VLR in message, the value of paging mark cell is used to indicate using TMSI Page response is carried out, which is to provide the MSC/VLR and the MSC/VLR of service for the UE to be located in MSC resource pool.

Specifically, MME sends CS service announcements message, the CS service announcements to the UE using existing bottom signaling connection Global CN ID comprising paging mark cell and MSC/VLR in message.

Under second of application scenarios, preferably, this method further include:

MME sends the IMSI and the overall situation CN ID of the UE to the base station target 2G/3G by UE or eNodeB, with After so that the UE is fallen back to the base station the target 2G/3G, the base station the target 2G/3G is the UE according to the overall situation CN ID Determine the MSC/VLR.

Preferably, MME sends the global CN of the IMSI and MSC/VLR of the UE by eNodeB to the base station target 2G/3G ID, comprising:

The notification message of the global CN ID of IMSI and the MSC/VLR including the UE are sent to described by MME ENodeB, so that the global CN ID of the IMSI of the UE and MSC/VLR is sent to the target 2G/ by the eNodeB NodeB, wherein the notification message are as follows: paging message or downlink transmit message.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, MME connects in S22 That receives UE transmission is used to indicate the instruction information for not saving TMSI in the UE, comprising:

MME receives the request message of activating business that UE is sent, and carries in the request message of activating business and is used to indicate institute State the instruction information for not saving TMSI in UE.

Preferably, the instruction information is CSFB response (CSFB response value).

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, in S22, MME to UE, which is sent, is used to indicate the IMSI instruction that the UE is responded using IMSI, comprising:

MME sends CS service announcements message to UE, includes being used to indicate the UE to use IMSI in the CS service announcements message The IMSI instruction responded.

It should be noted that MME sent to UE be used to indicate the IMSI that the UE is responded using IMSI and indicate when, can To be sent by existing signaling (such as CS service announcements message), can also be sent out by the signaling newly defined between MME and UE It send.

Below with reference to three specific embodiments, to MSC/VLR, MME, eNodeB, UE, 2G/ in method provided by the invention The interaction of NodeB (BSS/RNS) is described in detail.

Embodiment one, as shown in figure 3, the process of the present embodiment is as follows:

1.UE initiates joint attachment flow or co-location more new technological process, in EPC network PS field MME and 2G/3G network C S The registration of domain MSC/VLR successful combination.

2.MSC/VLR is initiated associated to SGs after receiving downlink CS service request using the IMSI or TMSI of UE The paging request of MME carries the global CN ID of MSC/VLR in the paging request.

3.MME executes different operations according to the current state of UE after the SGs paging request for receiving MSC/VLR transmission: If UE is currently at Idle state, 3b or 3c is thened follow the steps；If UE is currently at connected state, 3d is thened follow the steps.

3b.MME sends paging message to eNodeB, and the S-TMSI comprising UE is received with from MSC/VLR in the paging message The global CN ID of the MSC/VLR arrived, the domain CN in the paging message are set as " CS ".

Correspondingly, the global CN ID of the S-TMSI of UE and MSC/VLR is transmitted to by eNodeB in paging message of eating dishes without rice or wine UE, the domain CN is set as " CS " in the paging message of eating dishes without rice or wine.

3c.MME sends paging message to eNodeB using S-TMSI, and the domain CN in the paging message is set as " PS ".

Correspondingly, eNodeB sends paging message of eating dishes without rice or wine to UE using S-TMSI, the domain CN is arranged in the paging message of eating dishes without rice or wine For " PS ".After UE receives the paging message of eating dishes without rice or wine, service request (Service Request) message is sent to MME and is responded. After UE enters connected state, it includes to seek in the message that MME, which sends CS service announcements message to UE using existing bottom signaling connection, The global CN ID of mark cell with the MSC/VLR received from MSC/VLR is exhaled, the value of paging mark cell is used to indicate institute It states UE and carries out page response using TMSI.It should be noted that MME is sought using the domain S-TMSI and CN for " PS " initiation in the step It exhales, UE is first mainly become connected state from Idle state, to avoid the global CN for carrying MSC/VLR directly in paging message ID and increase unnecessary paging time delay and paging resource overhead because the length of the global CN ID of MSC/VLR be 5 bytes.

3d.MME sends CS service announcements message to UE by bottom signaling connection existing between UE, and the CS business is logical Know the global CN ID comprising paging mark cell and the MSC/VLR received from MSC/VLR in message, which identifies cell Value be used to indicate the UE using TMSI carry out page response.

After receiving S-TMSI paging message or the CS service announcements message indicated comprising TMSI, caching receives 4.UE MSC/VLR global CN ID.If not preserving legal TMSI in UE, 4a is thened follow the steps；

4a.UE explicitly informs MME, and it does not have legal TMSI.

Specifically, UE can send request (Extended Service Request) message of activating business to MME, this disappears It is carried in breath and is used to indicate the instruction information for not saving legal TMSI in the UE.Typically, which can be CSFB Response (CSFB response value).

After 5.MME does not save legal TMSI in learning UE, pass through bottom signaling connection existing between the UE CS service announcements message is sent to the UE, includes paging mark cell, paging mark letter in the CS service announcements Messages Message The value of member is used to indicate the UE and carries out page response using IMSI.

6.UE initiates CSFB process after receiving CS service announcements message.

Specifically, UE sends request (Extended Service Request) message of activating business to MME, triggers MME The CSFB for initiating eNodeB falls process after rise.It is the prior art that entire CSFB, which falls process after rise, and details are not described herein.

7.UE is after successfully falling back to the domain 2G/3G CS, due to having received the CS business comprising IMSI instruction in steps of 5 Notification message, UE will use IMSI and carry out page response, while UE carries the global CN of the MSC/VLR of caching in page response ID is to BSS/RNS.

8.BSS/RNS is after receiving IMSI page response, according to the global CN of the MSC/VLR carried in the page response ID come select service MSC/VLR.Since the global CN ID of MSC/VLR can uniquely identify one in operator PLMN MSC/VLR including under the scene of MSC pool, therefore may insure that page response is routed to by BSS/RNS and initiate SGs paging MSC/VLR, to avoid the failure of downlink CS business.

9. UE executes CS business in the target side domain 2G/3G CS after being successfully established CS signaling connection.Optionally, in the CS After service ending, UE can delete the global CN ID of the MSC/VLR of caching.

Embodiment two, as shown in figure 4, the process of the present embodiment is as follows:

1.UE initiates joint attachment flow or co-location more new technological process, in EPC network PS field MME and 2G/3G network C S The registration of domain MSC/VLR successful combination.

2.MSC/VLR is initiated associated to SGs after receiving downlink CS service request using the IMSI or TMSI of UE The paging request of MME carries the global CN ID of MSC/VLR in the paging request.Meanwhile MSC/VLR is by the IMSI and MSC/ of UE The global CN ID of VLR is sent to all BSS/RNS in MSC/VLR service range.Specifically, MSC/VLR is by under existing The global CN ID of the IMSI of UE and MSC/VLR is sent to by row A/Iu interface message or the A/Iu interface message newly defined BSS/RNS, the specific sending method present invention is without limitation.

Correspondingly, the global CN ID of the IMSI and MSC/VLR of BSS/RNS caching UE.Specifically, BSS/RNS can establish The mapping relations of the global CN ID of the IMSI and MSC/VLR of UE.Optionally, BSS/RNS is in the IMSI and MSC/ for receiving UE It can star a timer after the global CN ID of VLR, the IMSI and MSC/ of the UE of preservation can be removed in timer expiry The global CN ID of VLR.The setting of the timer duration is arranged by operator, or uses default value.

3.MME is executed different after the SGs paging request message for receiving MSC/VLR transmission according to the current state of UE Operation: if UE is currently at Idle state, 3b is thened follow the steps；If UE is currently at connected state, 3c is thened follow the steps.

3b.MME sends paging message to eNodeB, includes the S-TMSI of UE in the paging message, in the paging message The domain CN is set as " CS ".

Correspondingly, eNodeB sends paging message of eating dishes without rice or wine to UE, it include the S-TMSI, CN of UE in the paging message of eating dishes without rice or wine Domain is set as " CS "；

3c.MME sends CS service announcements message to UE by bottom signaling connection existing between UE, and the CS business is logical Know that, comprising paging mark cell in message, the value of paging mark cell is used to indicate the UE and carries out paging sound using TMSI It answers.

4.UE is after receiving S-TMSI paging message or the CS service announcements message indicated comprising TMSI, if in the UE Legal TMSI is not preserved, then the UE explicitly informs MME it does not have legal TMSI.

Specifically, UE can send request (Extended Service Request) message of activating business to MME, this disappears It is carried in breath and is used to indicate the instruction information for not saving legal TMSI in the UE.Typically, which can be CSFB Response (CSFB response value).

After 5.MME does not save legal TMSI in learning UE, pass through bottom signaling connection existing between the UE CS service announcements message is sent to the UE, includes paging mark cell, paging mark letter in the CS service announcements Messages Message The value of member is used to indicate the UE and carries out page response using IMSI.

6.UE initiates CSFB process after receiving CS service announcements message.

Specifically, UE sends request (Extended Service Request) message of activating business to MME, triggers MME The CSFB for initiating eNodeB falls process after rise.It is the prior art that entire CSFB, which falls process after rise, and details are not described herein.

7.UE is logical because having received the CS business comprising IMSI instruction in steps of 5 after successfully falling back to the domain 2G/3G CS Know message, UE will use IMSI and carry out page response.

8.BSS/RNS is after receiving IMSI page response, according to IMSI from the global CN of the IMSI and MSC/VLR of preservation The global CN ID of MSC/VLR is obtained in the mapping relations of ID, and service MSC/ is selected according to the global CN ID of MSC/VLR VLR.Since the global CN ID of MSC/VLR can uniquely identify a MSC/VLR in operator PLMN, it is included in MSC Under the scene of pool, therefore it may insure that page response is routed to the MSC/VLR for initiating SGs paging by BSS/RNS, to avoid down The failure of row CS business.

9. UE executes CS business in the target side domain 2G/3G CS after being successfully established CS signaling connection.

Above-mentioned two embodiment solves under MSC pool scene, and when UE does not have legal TMSI, because UE is not responding to MME The problem of paging and leading to called CS service fail also solves due to that can have multiple MSC/VLR to be in same position region UE provides service, at this point, the base station (BSS/RNS) of 2G/3G network cannot ensure to page if UE is responded using IMSI The problem of response is routed to the MSC/VLR for initiating paging, easily leads to called CS service fail.

Embodiment three, as shown in figure 5, the process of the present embodiment is as follows:

1.UE initiates joint attachment flow or co-location more new technological process, in EPC network PS field MME and 2G/3G network C S The registration of domain MSC/VLR successful combination.

2.MSC/VLR initiates seeking to the associated MME of SGs after receiving downlink CS service request, using the IMSI of UE It calls for asking.

3.MME is executed different after the SGs paging request message for receiving MSC/VLR transmission according to the current state of UE Operation: if UE is currently at Idle state, 3b is thened follow the steps；If UE is currently at connected state, 3c is thened follow the steps.

3b.MME sends paging message to eNodeB using S-TMSI, and the domain CN in the message is set as " CS ".Correspondingly, ENodeB sends paging message of eating dishes without rice or wine to UE using S-TMSI, and the domain CN is set as " CS " in the message.

3c.MME sends CS service announcements message to the UE by bottom signaling connection existing between UE, in the message Cell is identified comprising paging, the value of paging mark cell is used to indicate the UE and carries out page response using TMSI.

4.UE is after receiving S-TMSI paging message or the CS service announcements message indicated comprising TMSI, if UE is not saved There is legal TMSI, then UE explicitly informs MME it does not have legal TMSI.

Specifically, UE can send request (Extended Service Request) message of activating business to MME, this disappears It is carried in breath and is used to indicate the instruction information for not saving legal TMSI in UE.Typically, which can ring for CSFB (CSFB response value) should be worth.

5.MME after knowing UE currently without legal TMSI, by bottom signaling connection existing between UE to this UE sends CS service announcements message, includes paging mark cell in the message, and the value of paging mark cell is used to indicate described UE carries out page response using IMSI.

6.UE initiates CSFB process after receiving the paging message or CS service announcements message that the domain CN is " CS ".

Specifically, UE sends request (Extended Service Request) message of activating business to MME, triggers MME The CSFB for initiating eNodeB falls process after rise.It is the prior art that entire CSFB, which falls process after rise,.

7.UE is logical because having received the CS business comprising IMSI instruction in steps of 5 after successfully falling back to the domain 2G/3G CS Know message, UE will use IMSI and carry out page response.Page response is routed to selected MSC/VLR by BSS/RNS.

8. UE executes CS business in the target side domain 2G/3G CS after being successfully established CS signaling connection.

The present embodiment solves under non-MSC pool scene and UE does not have to lead when legal TMSI because UE is not responding to MME paging The problem of causing called CS service fail.

Based on the same inventive concept, a kind of user equipment (UE) provided in an embodiment of the present invention, as shown in fig. 6, the UE includes:

First unit 61, for receiving the request message of MME transmission, the request message is for requesting the first unit UE belonging to 61 initiates circuit switching fall-back CSFB process and after falling back to circuit-switched CS domain network using interim mobile use Family mark TMSI is responded；

Second unit 62, if the UE does not save TMSI, Xiang Suoshu MME transmission, which is used to indicate in the UE, does not save TMSI Instruction information so that the MME return be used to indicate what the UE was responded using IMSI International Mobile Subscriber Identity IMSI IMSI instruction；

Third unit 63, the IMSI instruction for being returned according to the MME, to target second in the CSFB process The base station generation/third generation 2G/3G sends the page response including the IMSI.

Illustrate the treatment process of the embodiment of the present invention from above two application scenarios separately below.

Under the first application scenarios, when first unit 61 receives the request message that MME is sent, the UE according to belonging to itself works as The difference of preceding state further includes the preferred implementation of following two again:

Under which, first unit 61 receive MME by provided for UE service eNodeB send be used for page UE's Paging message carries the S-TMSI of UE in the paging message.

Specifically, MME sends the paging message for paging the UE, the paging message to the eNodeB for providing service for UE In include UE S-TMSI so that the S-TMSI of UE is sent to the by the paging message of eating dishes without rice or wine for paging the UE by eNodeB One unit 61, so that third unit 63 be made to be responded during CSFB using the TMSI of UE.

Under which, the domain CN in the paging message that MME is sent to eNodeB is set as " CS "；ENodeB is to first unit The domain CN in 61 paging messages of eating dishes without rice or wine sent is set as " CS ".

If two, UE is in connected state, it includes seeking in the CS service announcements message which, which is CS service announcements message, Mark (Paging identity) cell is exhaled, the value of paging mark cell is used to indicate UE and carries out page response using TMSI.

Under which, first unit 61 receives the CS industry that MME is sent by bottom signaling connection existing between the UE Business notification message.

Under second of application scenarios, request message further includes the global CN ID of MSC/VLR, which provided for UE The MSC/VLR of the service and MSC/VLR is located in MSC resource pool.Disappear correspondingly, first unit 61 receives the request that MME is sent When breath, according to the difference of UE current state, further preferred implementation is included the following three types again:

If one, UE is in Idle state, the request message that first unit 61 receives is paging message, is wrapped in the paging message The global CN ID of the S-TMSI and MSC/VLR of UE is included, which is that the MSC/VLR and the MSC/VLR of service are provided for UE In MSC resource pool.

Wherein, the paging message include MME be sent to for UE service eNodeB paging message and the eNodeB send To the paging message (paging message of such as eating dishes without rice or wine) of first unit 61.

Under which, MME sends paging message to eNodeB, and includes the S-TMSI and MSC/ of UE in the paging message The global CN ID of VLR, so that the global CN ID of the S-TMSI of UE and the MSC/VLR are sent to UE by eNodeB.ENodeB exists After the paging message for receiving the global CN ID of the S-TMSI and MSC/VLR for carrying UE of MME transmission, to first unit 61 Transmission is eated dishes without rice or wine paging message, and carries in the paging message of eating dishes without rice or wine the global CN ID of the S-TMSI and the MSC/VLR of UE.

Under which, the domain CN in the paging message that MME is sent to eNodeB is set as " CS "；ENodeB is to first unit The domain CN in 61 paging messages of eating dishes without rice or wine sent is set as " CS ".

If two, UE is in Idle state, first unit 61 is before the request message for receiving MME transmission, further includes:

After first unit 61 receives ps domain paging message of the MME using the S-TMSI transmission of the UE, make UE from Idle state Into connected state, wherein the domain CN in the ps domain paging message is PS.

Specifically, MME sends the paging message for paging UE to eNodeB using S-TMSI, the CN in the paging message Domain is set as " PS ".Correspondingly, eNodeB sends the paging message of eating dishes without rice or wine for paging UE to first unit 61 using S-TMSI, The domain CN is set as " PS " in the paging message of eating dishes without rice or wine.Correspondingly, passing through after first unit 61 receives the paging message of eating dishes without rice or wine ENodeB sends service request (Service Request) message to MME and is responded, at this point, the state of UE is turned by Idle state For connected state.

Under which, after UE enters connected state, first unit 61 receives the request message that MME is sent, the request message It include the global CN ID of paging mark cell and MSC/VLR for CS service announcements message, in the CS service announcements message, this is sought It exhales the value of mark cell to be used to indicate and carries out page response using TMSI, which is to provide the MSC/VLR of service for the UE And the MSC/VLR is located in MSC resource pool.

If three, UE is in connected state, the request message that first unit 61 receives is CS service announcements message, the CS business It include the global CN ID of paging mark cell and MSC/VLR in notification message, the value of paging mark cell is used to indicate use TMSI carries out page response, which is to provide the MSC/VLR and the MSC/VLR of service for UE to be located in MSC resource pool.

Specifically, first unit 61 receives the CS service announcements that MME utilizes existing bottom signaling connection to send to the UE Message includes the global CN ID of paging mark cell and MSC/VLR in the message.

Under second of application scenarios, preferably, third unit 63 is also used to:

The global CN ID of the IMSI and the MSC/VLR of UE are sent to the base station target 2G/3G in CSFB process, so that The base station the target 2G/3G is that UE determines the MSC/VLR according to the global CN ID of the MSC/VLR.

Under second of application scenarios, preferably, being also used to after first unit 61 receives the request message that MME is sent: Cache the global CN ID of the MSC/VLR received；

After third unit 63 sends the page response of the IMSI including the UE to the base station 2G/3G, be also used to: deletion has been delayed The global CN ID of the MSC/VLR deposited.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, second unit 62 It is sent to MME and is used to indicate the instruction information for not saving TMSI in the UE, comprising:

MME sends request message of activating business, and carries and is used to indicate in the UE not in the request message of activating business Save the instruction information of TMSI.

Preferably, the instruction information is CSFB response (CSFB response value).

Based on the same inventive concept, another user equipment (UE) provided in an embodiment of the present invention, as shown in fig. 7, the UE packet It includes:

Transceiver 71, for receiving the request message of MME transmission, the request message is used to request the UE hair belonging to itself It plays CSFB process and is responded after falling back to the domain CS network using TMSI；If the UE does not save TMSI, Xiang Suoshu MME hair The instruction information for being used to indicate and not saving TMSI in the UE is sent, so that MME return, which is used to indicate the UE, uses IMSI The IMSI instruction responded；

Processor 72, for being returned according to the MME IMSI instruction, in the CSFB process, make transceiver 71 to The base station target 2G/3G sends the page response including the IMSI.

Wherein, it is connected between transceiver 71 and processor 72 using bus mode.

Illustrate the treatment process of the embodiment of the present invention from above two application scenarios separately below.

Under the first application scenarios, when transceiver 71 receives the request message that MME is sent, the UE according to belonging to itself is current The difference of state further includes the preferred implementation of following two again:

If one, UE is in Idle state, which is the paging message for paging UE, and including in the paging message should The S-TMSI of UE；

Under which, transceiver 71 receive MME by provided for UE service eNodeB send be used for page seeking for UE Message is exhaled, the S-TMSI of UE is carried in the paging message.

Under which, domain core net (Core Network, CN) in the paging message that MME is sent to eNodeB is set as "CS"；The domain CN in paging message of eating dishes without rice or wine that eNodeB is sent to transceiver 71 is set as " CS ".

If two, UE is in connected state, it includes seeking in the CS service announcements message which, which is CS service announcements message, Mark (Paging identity) cell is exhaled, the value of paging mark cell is used to indicate UE and carries out page response using TMSI.

Under which, transceiver 71 receives the CS business that MME is sent by bottom signaling connection existing between the UE Notification message.

Under second of application scenarios, request message further includes the global CN ID of MSC/VLR, which provided for UE The MSC/VLR of the service and MSC/VLR is located in MSC resource pool.Correspondingly, transceiver 71 receives the request message that MME is sent When, according to the difference of UE current state, further include the following three types preferred implementation again:

If one, UE is in Idle state, the request message that transceiver 71 receives is paging message, includes in the paging message The global CN ID of the S-TMSI and MSC/VLR of UE, the MSC/VLR be provided for UE service MSC/VLR and the MSC/VLR In MSC resource pool.

Wherein, the paging message include MME be sent to for UE service eNodeB paging message and the eNodeB send To the paging message (paging message of such as eating dishes without rice or wine) of transceiver 71.

Under which, MME sends paging message to eNodeB, and includes the S-TMSI and MSC/ of UE in the paging message The global CN ID of VLR, so that the global CN ID of the S-TMSI of UE and the MSC/VLR are sent to UE by eNodeB.ENodeB exists After the paging message for receiving the global CN ID of the S-TMSI and MSC/VLR for carrying UE of MME transmission, sent out to transceiver 71 Send paging message of eating dishes without rice or wine, and in the paging message of eating dishes without rice or wine carry UE S-TMSI and the MSC/VLR global CN ID.

Under which, the domain CN in the paging message that MME is sent to eNodeB is set as " CS "；ENodeB is to transceiver 71 The domain CN in paging message of eating dishes without rice or wine sent is set as " CS ".

If two, UE is in Idle state, transceiver 71 is also used to before the request message for receiving MME transmission:

After receiving ps domain paging message of the MME using the S-TMSI transmission of UE, UE is made to enter connected state from Idle state, In, the domain CN in the ps domain paging message is PS.

Specifically, MME sends the paging message for paging UE to eNodeB using S-TMSI, the CN in the paging message Domain is set as " PS ".ENodeB sends the paging message of eating dishes without rice or wine for paging UE to transceiver 71 using S-TMSI, this eats dishes without rice or wine to seek The domain CN in message is exhaled to be set as " PS ".After transceiver 71 receives the paging message of eating dishes without rice or wine, business is sent to MME by eNodeB Request (Service Request) message is responded, at this point, the state of UE switchs to connected state by Idle state.

Under which, after UE enters connected state, transceiver 71 receives the request message that MME is sent, which is CS service announcements message includes the global CN ID of paging mark cell and MSC/VLR, the paging in the CS service announcements message Mark cell value be used to indicate using TMSI carry out page response, the MSC/VLR be provided for the UE service MSC/VLR and The MSC/VLR is located in MSC resource pool.

If three, UE is in connected state, the request message that transceiver 71 receives is CS service announcements message, and the CS business is logical Know to include the global CN ID for paging mark cell and MSC/VLR in message, the value of paging mark cell is used to indicate use TMSI carries out page response, which is to provide the MSC/VLR and the MSC/VLR of service for UE to be located in MSC resource pool.

Disappeared specifically, transceiver 71 receives MME using the CS service announcements that existing bottom signaling connection is sent to the UE It ceases, includes the global CN ID of paging mark cell and MSC/VLR in the message.

Under second of application scenarios, preferably, transceiver 71 is also used to:

The global CN ID of the IMSI and the MSC/VLR of UE are sent to the base station target 2G/3G in CSFB process, so that The base station target 2G/3G is that UE determines the MSC/VLR according to the global CN ID of the MSC/VLR.

Under second of application scenarios, preferably, after transceiver 71 receives the request message that MME is sent, processor 72 It is also used to: caching the global CN ID of the MSC/VLR received；

After transceiver 71 sends the page response of the IMSI including the UE to the base station 2G/3G, processor 72 is also used to: being deleted Except the global CN ID of the MSC/VLR cached.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, transceiver 71 to MME transmission is used to indicate the instruction information for not saving TMSI in the UE, specifically:

Request message of activating business is sent to MME, carries and is used to indicate in the UE not in the request message of activating business Save the instruction information of TMSI.

Preferably, the instruction information is CSFB response (CSFB response value).

Based on the same inventive concept, the embodiment of the invention provides a kind of MME, as shown in figure 8, the MME includes:

First module 81, for sending request message to user equipment (UE), the request message is for requesting the UE to send out Rise circuit switching fall-back CSFB process and after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI into Row response；

Second module 82, for not saving the instruction letter of TMSI in the UE in being used to indicate of receiving that the UE sends After breath, Xiang Suoshu UE, which is sent, is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI.

Illustrate the treatment process of the embodiment of the present invention from above two application scenarios separately below.

It is different according to UE current state under the first application scenarios, the request message that the first module 81 is sent to UE Difference specifically includes the preferred implementation of following two:

If one, UE is in Idle state, it includes UE in the paging message which, which is the paging message for paging UE, S-TMSI；

Specifically, the first module 81 sends the paging message for paging the UE to the eNodeB for providing service for the UE, It include the S-TMSI of UE in the paging message, so that eNodeB is by the paging message of eating dishes without rice or wine for paging the UE by the S- of the UE TMSI is sent to the UE, so that the UE be made to be responded after falling back to the domain CS network using the TMSI of the UE.

Under which, the domain CN in paging message that the first module 81 is sent to eNodeB is set as " CS "；ENodeB to The domain CN in paging message of eating dishes without rice or wine that UE is sent is set as " CS ".

If two, UE is in connected state, it includes seeking in the CS service announcements message which, which is CS service announcements message, Mark (Paging identity) cell is exhaled, the value of paging mark cell is used to indicate the UE and is paged using TMSI Response.

Disappear specifically, the first module 81 sends CS service announcements to the UE by bottom signaling connection existing between UE Breath.

Under second of application scenarios, request message further includes the global CN ID of MSC/VLR, which mentioned for the UE MSC/VLR and the MSC/VLR for service are located in MSC resource pool.Correspondingly, first mould different according to UE current state The request message that block 81 is sent to UE is also different, specifically includes the preferred implementation of following two:

If one, UE is in Idle state, the request message that the first module 81 is sent to UE is paging message, in the paging message The global CN ID of S-TMSI and MSC/VLR including the UE, the MSC/VLR are to provide the MSC/VLR of service for the UE and be somebody's turn to do MSC/VLR is located in MSC resource pool.

Wherein, which includes the paging message for the eNodeB that the first module 81 is sent to as UE service, and should ENodeB is sent to the paging message (paging message of such as eating dishes without rice or wine) of UE.

Specifically, the first module 81 sends the paging message for paging UE to eNodeB, it include UE in the paging message S-TMSI and initiate paging MSC/VLR global CN ID so that eNodeB passes through the paging message of eating dishes without rice or wine for paging UE The S-TMSI of UE and overall situation CN ID are sent to the UE.ENodeB receive the first module 81 transmission carry UE's After the paging message of the global CN ID of S-TMSI and MSC/VLR, paging message of eating dishes without rice or wine is sent to UE, and disappear in the paging of eating dishes without rice or wine The global CN ID of the S-TMSI and the MSC/VLR of the UE is carried in breath.

Under this method, the domain CN in paging message that the first module 81 is sent to eNodeB is set as " CS "；ENodeB to The domain CN in paging message of eating dishes without rice or wine that UE is sent is set as " CS ".

If two, UE is in Idle state, the first module 81 is sent to UE before request message, further includes: the first module 81 makes Ps domain paging message is sent to UE with the S-TMSI of UE, so that UE enters connected state, wherein the domain CN in ps domain paging message is PS。

Specifically, the first module 81 sends the paging message for paging UE to eNodeB using S-TMSI, which disappears The domain CN in breath is set as " PS ".Correspondingly, eNodeB sends the paging message of eating dishes without rice or wine for paging UE to UE using S-TMSI, The domain CN is set as " PS " in the paging message of eating dishes without rice or wine.Correspondingly, after UE receives the paging message of eating dishes without rice or wine, by eNodeB to MME It sends service request (Service Request) message to be responded, at this point, the state of the UE switchs to connected state by Idle state.

Under which, after UE enters connected state, the request message that the first module 81 is sent to the UE is CS service announcements Message includes the global CN ID of paging mark (Paging identity) cell and MSC/VLR in the CS service announcements message, The value of paging mark cell, which is used to indicate, carries out page response using TMSI, which is to provide service for the UE The MSC/VLR and MSC/VLR is located in MSC resource pool.

If three, UE is in connected state, the request message that the first module 81 is sent to UE is CS service announcements message, the CS industry It is engaged in including the global CN ID for paging mark cell and MSC/VLR in notification message, the value of paging mark cell, which is used to indicate, to be made Page response is carried out with TMSI, which is to provide the MSC/VLR and the MSC/VLR of service for the UE to be located at MSC resource pool In.

Specifically, the first module 81 sends CS service announcements message, the CS to the UE using existing bottom signaling connection Global CN ID comprising paging mark cell and MSC/VLR in service announcements message.

Under second of application scenarios, preferably, the MME further include:

Third module sends the IMSI of the UE and described complete to the base station target 2G/3G for by UE or eNodeB Office CN ID, so that the base station the target 2G/3G is according to the overall situation CN after the UE falls back to the base station the target 2G/3G ID is that the UE determines the MSC/VLR.

Preferably, third module by eNodeB to the base station target 2G/3G send the UE IMSI and MSC/VLR it is complete Office CN ID, comprising:

The notification message of the global CN ID of IMSI and the MSC/VLR including the UE are sent to the eNodeB, So that the global CN ID of the IMSI of the UE and MSC/VLR is sent to the base station the target 2G/3G by the eNodeB, Wherein, the notification message are as follows: paging message or downlink transmit message.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, the second module 82 Receive UE transmission is used to indicate the instruction information for not saving TMSI in the UE, comprising:

The request message of activating business that UE is sent is received, is carried in the request message of activating business and is used to indicate the UE In do not save the instruction information of TMSI.

Preferably, the instruction information is CSFB response (CSFB response value).

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, the second module 82 It is sent to UE and is used to indicate the IMSI instruction that the UE is responded using IMSI, comprising:

CS service announcements message is sent to UE, includes being used to indicate the UE to carry out using IMSI in the CS service announcements message The IMSI of response is indicated.

It should be noted that the second module 82 is used to indicate the UE and is referred to using the IMSI that IMSI is responded to UE transmission When showing, it can be sent by existing signaling (such as CS service announcements message), it can also be by newly being defined between MME and UE Signaling is sent.

Based on the same inventive concept, the embodiment of the invention also provides another MME, as shown in figure 9, the MME includes:

Transmitter 91, for sending request message to user equipment (UE), the request message is for requesting the UE to initiate Circuit switching fall-back CSFB process is simultaneously carried out after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI Response；

Receiver 92, for not saving the instruction information of TMSI in the UE in being used to indicate of receiving that the UE sends Afterwards, transmitter 91 is made to send the IMSI for being used to indicate the UE and being responded using IMSI International Mobile Subscriber Identity IMSI to the UE Instruction.

Wherein, it is connected between transmitter 91 and receiver 92 by bus.

Illustrate the treatment process of the embodiment of the present invention from above two application scenarios separately below.

Different according to the current state of UE under the first application scenarios, the request message that transmitter 91 is sent to UE is not yet Together, the preferred implementation of following two is specifically included:

If one, UE is in Idle state, it includes UE in the paging message which, which is the paging message for paging UE, S-TMSI；

Specifically, transmitter 91 sends the paging message for paging the UE to the eNodeB for providing service for the UE, it should It include the S-TMSI of UE in paging message, so that eNodeB is by the paging message of eating dishes without rice or wine for paging the UE by the S- of the UE TMSI is sent to the UE, so that the UE be made to be responded after falling back to the domain CS network using the TMSI of the UE.

Under which, the domain CN in paging message that transmitter 91 is sent to eNodeB is set as " CS "；ENodeB is to UE The domain CN in paging message of eating dishes without rice or wine sent is set as " CS ".

If two, UE is in connected state, it includes seeking in the CS service announcements message which, which is CS service announcements message, Mark (Paging identity) cell is exhaled, the value of paging mark cell is used to indicate the UE and is paged using TMSI Response.

Disappear specifically, transmitter 91 sends CS service announcements to the UE by bottom signaling connection existing between UE Breath.

Under second of application scenarios, request message further includes the global CN ID of MSC/VLR, which mentioned for the UE MSC/VLR and the MSC/VLR for service are located in MSC resource pool.Correspondingly, transmitter different according to UE current state 91 to UE send request message it is also different, specifically include the preferred implementation of following two:

If one, UE is in Idle state, the request message that transmitter 91 is sent to UE is paging message, is wrapped in the paging message The global CN ID of the S-TMSI and MSC/VLR of the UE is included, which is that the MSC/VLR and the MSC/ of service are provided for the UE VLR is located in MSC resource pool.

Wherein, which includes the paging message for the eNodeB that transmitter 91 is sent to as UE service, and should ENodeB is sent to the paging message (paging message of such as eating dishes without rice or wine) of UE.

Specifically, transmitter 91 sends the paging message for paging UE to eNodeB, it include UE's in the paging message The S-TMSI and global CN ID for initiating the MSC/VLR paged, so that eNodeB will by the paging message of eating dishes without rice or wine for paging UE The S-TMSI of UE and overall situation CN ID are sent to the UE.ENodeB is in the S- for carrying UE for receiving the transmission of transmitter 91 After the paging message of the global CN ID of TMSI and MSC/VLR, paging message of eating dishes without rice or wine is sent to UE, and in the paging message of eating dishes without rice or wine The global CN ID of the middle S-TMSI and the MSC/VLR for carrying the UE.

Under this method, the domain CN in paging message that transmitter 91 is sent to eNodeB is set as " CS "；ENodeB is to UE The domain CN in paging message of eating dishes without rice or wine sent is set as " CS ".

If two, UE is in Idle state and is also used to: before transmitter 91 sends request message to UE using the S-TMSI of UE Ps domain paging message is sent to UE, so that UE enters connected state, wherein the domain CN in ps domain paging message is PS.

Specifically, transmitter 91 sends the paging message for paging UE, the paging message to eNodeB using S-TMSI In the domain CN be set as " PS ".Correspondingly, eNodeB sends the paging message of eating dishes without rice or wine for paging UE to UE using S-TMSI, it should The domain CN in paging message of eating dishes without rice or wine is set as " PS ".Correspondingly, being sent out by eNodeB to MME after UE receives the paging message of eating dishes without rice or wine Service request (Service Request) message is sent to be responded, at this point, the state of the UE switchs to connected state by Idle state.

Under which, after UE enters connected state, the request message that transmitter 91 is sent to the UE is that CS service announcements disappear It ceases, includes the global CN ID of paging mark (Paging identity) cell and MSC/VLR in the CS service announcements message, it should The value of paging mark cell, which is used to indicate, carries out page response using TMSI, which is to provide the MSC/ of service for the UE The VLR and MSC/VLR is located in MSC resource pool.

If three, UE is in connected state, the request message that transmitter 91 is sent to UE is CS service announcements message, the CS business It include the global CN ID of paging mark cell and MSC/VLR in notification message, the value of paging mark cell is used to indicate use TMSI carries out page response, which is to provide the MSC/VLR and the MSC/VLR of service for the UE to be located at MSC resource pool In.

Specifically, transmitter 91 sends CS service announcements message, the CS industry to the UE using existing bottom signaling connection The global CN ID being engaged in comprising paging mark cell and MSC/VLR in notification message.

Under second of application scenarios, preferably, transmitter 91 is also used to:

By UE or eNodeB, the IMSI and the overall situation CN ID of the UE are sent to the base station target 2G/3G, so that After the UE falls back to the base station the target 2G/3G, the base station the target 2G/3G is that the UE is true according to the overall situation CN ID The fixed MSC/VLR.

Preferably, transmitter 91 by eNodeB to the base station target 2G/3G send the UE IMSI and MSC/VLR it is complete Office CN ID, comprising:

The notification message of the global CN ID of IMSI and the MSC/VLR including the UE are sent to the eNodeB, So that the global CN ID of the IMSI of the UE and MSC/VLR is sent to the base station the target 2G/3G by the eNodeB, Wherein, the notification message are as follows: paging message or downlink transmit message.

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, receiver 92 connects That receives UE transmission is used to indicate the instruction information for not saving TMSI in the UE, comprising:

The request message of activating business that UE is sent is received, is carried in the request message of activating business and is used to indicate the UE In do not save the instruction information of TMSI.

Preferably, the instruction information is CSFB response (CSFB response value).

Any embodiment based on the first above-mentioned application scenarios and second of application scenarios, preferably, transmitter 91 to UE, which is sent, is used to indicate the IMSI instruction that the UE is responded using IMSI, comprising:

CS service announcements message is sent to UE, includes being used to indicate the UE to carry out using IMSI in the CS service announcements message The IMSI of response is indicated.

It should be noted that transmitter 91 is sending the IMSI instruction for being used to indicate the UE and being responded using IMSI to UE When, it can be sent by existing signaling (such as CS service announcements message), it can also be by the letter that is newly defined between MME and UE It enables and sending.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (30)

1. the paging processing method that a kind of downstream circuitry exchange falls CSFB after rise, which is characterized in that this method comprises:

User equipment (UE) receives the request message that mobile management entity MME is sent, and the request message is for requesting the UE to send out Rise circuit switching fall-back CSFB process and after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI into Row response；

If the UE does not save TMSI, the UE is sent to the MME is used to indicate the instruction for not saving TMSI in the UE letter Breath, so that the MME, which is returned, is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI；

The UE is indicated according to the IMSI that the MME is returned, to the target second generation/third generation 2G/3G in the CSFB process Base station sends the page response including the IMSI.

2. the method as described in claim 1, which is characterized in that the request message are as follows: paging message or CS service announcements Message.

3. method according to claim 2, which is characterized in that

It include the S-TMSI of the UE in the paging message；Or

It include paging mark cell in the CS service announcements message, the value of the paging mark cell, which is used to indicate the UE, to be made It is responded with TMSI.

4. method as claimed in claim 2 or claim 3, which is characterized in that if the request message is the CS service announcements message And the UE is in Idle state, the method also includes:

The UE receive the MME using UE S-TMSI send packet switched ps domain paging message after, from Idle state into Enter connected state, wherein the domain CN in the ps domain paging message is PS.

5. method as claimed in any one of claims 1 to 3, which is characterized in that the UE is used to indicate institute to MME transmission State the instruction information for not saving TMSI in UE, comprising:

The UE sends request message of activating business to the MME, carries in the request message of activating business and is used to indicate institute State the instruction information for not saving TMSI in UE.

6. method as claimed in claim 5, which is characterized in that the instruction information is CSFB response.

7. the method as described in any one of claims 1 to 3,6, which is characterized in that if the request message further includes movement Service switching center/visiting location register MSC/VLR global core network identifier CN ID, the MSC/VLR are located at MSC money In the pond of source, this method further include:

The UE sends the IMSI and the overall situation CN ID of the UE in the CSFB process to the base station the target 2G/3G, So that the base station the target 2G/3G is that the UE determines the MSC/VLR according to the overall situation CN ID.

8. the paging processing method that a kind of downstream circuitry exchange falls CSFB after rise, which is characterized in that this method comprises:

Mobile management entity MME sends request message to user equipment (UE), and the request message is for requesting the UE to initiate electricity Road exchange is fallen after rise CSFB process and is rung after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI It answers；

After the MME is used to indicate the instruction information for not saving TMSI in the UE receive that the UE sends, Xiang Suoshu UE, which is sent, is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI.

9. method according to claim 8, which is characterized in that the request message are as follows: paging message or CS service announcements Message.

10. method as claimed in claim 9, which is characterized in that

The paging message further includes the S-TMSI of the UE；Or

The CS service announcements message further includes paging mark cell, and the value of the paging mark cell, which is used to indicate the UE, to be made It is responded with TMSI.

11. the method as described in claim 9 or 10, which is characterized in that if the request message is that the CS service announcements disappear It ceases and the UE is in Idle state, the method also includes:

The MME sends packet switched ps domain paging message to the UE using the S-TMSI of the UE, so that the UE enters Connected state, wherein the domain core net CN in the ps domain paging message is PS.

12. such as the described in any item methods of claim 8~10, which is characterized in that the MME receives the use that the UE is sent In the instruction information for indicating not saving TMSI in the UE, comprising:

The MME receives the request message of activating business that the UE is sent, and carries in the request message of activating business for referring to Show the instruction information for not saving TMSI in the UE.

13. method as claimed in claim 12, which is characterized in that the instruction information is CSFB response.

14. the method as described in any one of claim 8~10,13, which is characterized in that this method further include:

The MME is sent by the UE or evolved node B eNodeB to the target second generation/base station third generation 2G/3G The IMSI and global core network identifier CN ID of mobile services switching centre/visiting location register MSC/VLR, so that institute It states after UE falls back to the base station the target 2G/3G, the base station the target 2G/3G is that the UE is determined according to the overall situation CN ID The MSC/VLR.

15. method as claimed in claim 14, which is characterized in that the MME is by the eNodeB to the target 2G/3G Base station sends the IMSI and overall situation CN ID, comprising:

Notification message including the IMSI and overall situation CN ID is sent to the eNodeB by the MME, so that described The IMSI and the overall situation CN ID are sent to the base station the target 2G/3G by eNodeB, wherein the notification message are as follows: seek Message or downlink is exhaled to transmit message.

16. a kind of user equipment (UE), which is characterized in that the UE includes:

First unit, for receiving the request message of mobile management entity MME transmission, the request message is for requesting described the UE belonging to Unit one is initiated circuit switching fall-back CSFB process and is moved after falling back to circuit-switched CS domain network using interim Dynamic user identifier TMSI is responded；

Second unit, if the UE does not save TMSI, Xiang Suoshu MME transmission is used to indicate the instruction for not saving TMSI in the UE Information, so that the MME, which is returned, is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI；

Third unit, the IMSI instruction for being returned according to the MME, to the target second generation/third in the CSFB process The page response including the IMSI is sent for the base station 2G/3G.

17. UE as claimed in claim 16, which is characterized in that the request message are as follows: paging message or CS service announcements Message.

18. UE as claimed in claim 17, which is characterized in that

It include the S-TMSI of the UE in the paging message；Or

It include paging mark cell in the CS service announcements message, the value of the paging mark cell, which is used to indicate the UE, to be made It is responded with TMSI.

19. the UE as described in claim 17 or 18, which is characterized in that if the request message is the CS service announcements message And the UE is in Idle state, the first unit is also used to:

After receiving the packet switched ps domain paging message that the MME is sent using the S-TMSI of UE, make the UE from the free time State enters connected state, wherein the domain CN in the ps domain paging message is PS.

20. such as the described in any item UE of claim 16~18, which is characterized in that the second unit is specifically used for:

Request message of activating business is sent to the MME, carries and is used to indicate in the UE in the request message of activating business The instruction information of TMSI is not saved.

21. UE as claimed in claim 20, which is characterized in that the instruction information is CSFB response.

22. the UE as described in any one of claim 16~18,21, which is characterized in that if the request message further includes moving The dynamic global core network identifier CN ID of service switching center/visiting location register MSC/VLR, the MSC/VLR are located at MSC In resource pool, the third unit is also used to:

The IMSI and the overall situation CN ID for sending the UE to the base station the target 2G/3G in the CSFB process, so that institute It is that the UE determines the MSC/VLR that the base station target 2G/3G, which is stated, according to the overall situation CN ID.

23. a kind of mobile management entity MME, which is characterized in that the MME includes:

First module, for sending request message to user equipment (UE), the request message is for requesting the UE to initiate circuit Exchange is fallen after rise CSFB process and is responded after falling back to circuit-switched CS domain network using Temporary Mobile Subscriber Identity TMSI；

Second module, after being used to indicate the instruction information for not saving TMSI in the UE receive that the UE sends, It is sent to the UE and is used to indicate the IMSI instruction that the UE is responded using IMSI International Mobile Subscriber Identity IMSI.

24. MME as claimed in claim 23, which is characterized in that the request message are as follows: paging message or CS service announcements Message.

25. MME as claimed in claim 24, which is characterized in that

The paging message further includes the S-TMSI of the UE；Or

The CS service announcements message further includes paging mark cell, and the value of the paging mark cell, which is used to indicate the UE, to be made It is responded with TMSI.

26. the MME as described in claim 24 or 25, which is characterized in that if the request message is that the CS service announcements disappear It ceases and the UE is in Idle state, first module is also used to:

Packet switched ps domain paging message is sent to the UE using the S-TMSI of the UE, so that the UE enters connected state, Wherein, the domain core net CN in the ps domain paging message is PS.

27. such as the described in any item MME of claim 23~25, which is characterized in that second module receives the UE hair That send is used to indicate the instruction information for not saving TMSI in the UE, comprising:

The request message of activating business that the UE is sent is received, is carried in the request message of activating business and is used to indicate the UE In do not save the instruction information of TMSI.

28. MME as claimed in claim 27, which is characterized in that the instruction information is CSFB response.

29. the MME as described in any one of claim 23~25,28, which is characterized in that the MME further include:

Third module, for passing through the UE or evolved node B eNodeB, to the target second generation/third generation 2G/3G base It stands and sends the IMSI and global core network identifier CN ID of mobile services switching centre/visiting location register MSC/VLR, So that the base station the target 2G/3G is described according to the overall situation CN ID after the UE falls back to the base station the target 2G/3G UE determines the MSC/VLR.

30. MME as claimed in claim 29, which is characterized in that the third module is by the eNodeB to the target The base station 2G/3G sends the IMSI and overall situation CN ID, comprising:

Notification message including the IMSI and overall situation CN ID is sent to the eNodeB, so that the eNodeB will The IMSI and the overall situation CN ID are sent to the base station the target 2G/3G, wherein the notification message are as follows: paging message or Person's downlink transmits message.