CN102547891A - Method for realizing circuit switched fallback business and terminal with double receiving modes - Google Patents
Method for realizing circuit switched fallback business and terminal with double receiving modes Download PDFInfo
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- CN102547891A CN102547891A CN2010105896031A CN201010589603A CN102547891A CN 102547891 A CN102547891 A CN 102547891A CN 2010105896031 A CN2010105896031 A CN 2010105896031A CN 201010589603 A CN201010589603 A CN 201010589603A CN 102547891 A CN102547891 A CN 102547891A
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Abstract
The invention discloses a method for realizing a circuit switched fallback business and dual-receiving-mode user equipment. The method includes: utilizing the dual-receiving-mode user equipment to acquire an LAI (location area identifier) of a resident cell in a GERAN (GSM enhanced radio access network)/UTRAN (universal mobile telecommunication system radio access network); enabling the dual-receiving-mode user equipment to transmit the LAI to an MME (mobility management entity) when the dual-receiving-mode user equipment initiates combined attachment an E-UTRAN (evolved universal mobile telecommunication system radio access network) and GERAN/UTRAN and updates combined positions of the same; and utilizing the MME to select a visited location register for the dual-receiving-mode user equipment according to the received LAI. By the aid of the method, the UE (user equipment) can be guaranteed to be constantly attached to a correct MSC (mobile switching center)/VLR (visited location register), and the problem that an attached MSC and a call admission MSC in an existing UE circuit switched fallback business with a single radio mode can be different is solved.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of method and double reception mode terminal of realizing that circuit switching fall-back is professional.
Background technology
Evolution packet switching system (Evolved Packet Switched System; Be called for short EPS) be by 3-G (Generation Three mobile communication system) standardization project (3rd Generation Partnership Project; Abbreviate 3GPP as) development and the mobile packet-switch technology formulated; Aim to provide and have more high transfer rate, more the wireless packet switched network of short transmission time-delay.
EPS can further be divided into evolution global system for mobile communications wireless access network (Evolved Universal Mobile Telecommunication System Radio Access Network again; Abbreviate E-UTRN as) and evolution packet switched core network (Evolved Packet Switched Core is called for short EPC).EPC also simultaneously can support global system for mobile communications wireless access network (Universal Mobile Telecommunication System Radio Access Network; Abbreviate UTRAN as), GSM (Global System for Mobile communications; Global system for mobile communications) access of enhancing Radio Access Network Radio Access Networks such as (GSM Enhanced Radio Access Network are called for short GERAN) and mutual.
In the evolution of EPS, EPS and traditional circuit switching (Circuit Switched is called for short CS) will long-term co-existence, at the early stage of development EPS data service are provided mainly, and speech business continues to provide through the circuit domain of GERAN/UTRAN.There is dual mode can realize above-mentionedly data service being provided at present, speech business is provided by circuit domain by EPS:
1) adopts two wireless mode terminals.
Two wireless modes terminal is exactly the said at ordinary times double-mode and double-standby terminals of people; Have two two receipts abilities of sending out; Being equivalent to two terminals integrates; Can in E-UTRAN and UTRAN/GERAN, work alone respectively, but this terminal cost has problems at aspects such as power consumption, air interference than higher in addition.
2) circuit switching fall-back (CS Fall Back is called for short CSFB) business.
This sample loading mode is applicable to single wireless mode terminal, is exactly said at ordinary times double-mode single-standby terminal, only has the single-shot list and receives ability, can only be operated under a kind of wireless access way in the same time.Area there being E-UTRAN to cover resides in EPS, and carries out data service according to user's needs; When CS such as voice are professional, carry out the CSFB process and be linked into the CS network, be that the user provides CS professional by traditional CS network.
Fig. 1 shows the Organization Chart of under the EPS network insertion, realizing single wireless mode CSFB in the prior art, and is following for the explanation of each entity among Fig. 1:
UE 101: subscriber equipment (User Equipment, be called for short UE), CSFB UE belongs to single wireless mode terminal, can only be operated under a kind of wireless access way a moment, promptly or reside among the E-UTRAN, or resides among UTRAN or the GERAN.
UTRAN/GERAN 102:UMTS or gsm wireless Access Network are that CS falls professional objective network after rise, and CS and/or PS (Packet Switched, packet switching) can be provided the wireless access resource.
The wireless access network of E-UTRAN 103:EPS, the network element that wherein comprises are evolution base station node (Evolved NodeB are called for short eNodeB), provide high-speed packet to insert Radio Resource.
SGSN 104: Serving GPRS Support Node (Serving GPRS Supporting Node is called for short SGSN) provides the grouping of GERAN to insert.
MME 105: Mobility Management Entity (Mobility Management Entity is called for short MME) is a chain of command entity, is responsible for mobile management, user access control and professional control.
MSC 106: mobile switching centre's (Mobile Switching Center is called for short MSC)/VLR Visitor Location Register (Visited Location Register is called for short VLR).MSC and VLR generally are positioned at same entity, therefore are referred to as MSC/VLR.
GMSC 107: GMSC (Gateway MSC, be called for short GMSC) is z z z the incoming unit that cries eventually.
Also have home subscriber server (Home Subscriber Server)/attaching position register equipment such as (Home Location Register are called for short HLR) in addition, not shown.
In wireless domain, the area of coverage is divided into different Acceditation Areas, and each Acceditation Area uses globally unique sign; In E-UTRAN, Acceditation Area is called tracking area, with tracking area identification (Track Area Identifier; Be called for short TAI) expression, in GERAN/UTRAN, Acceditation Area is called the lane place; With Location Area Identification (Location Area Identifier is called for short LAI) expression.
As the UE with CSFB ability during from the E-UTRAN network insertion, need to carry out associating attaching process, Fig. 2 is the associating attachment flow of CSFB in the prior art, and UE is positioned at the common area of coverage of E-UTRAN and UTRAN/GERAN at this moment, and attaching process may further comprise the steps:
201, UE sends attach request through E-UTRAN to MME, carries the TAI of current E-UTRAN Acceditation Area, and EPS and the indication of CS combined registering;
202, MME carries out the EPS attaching process, comprises processes such as authentication, authentication, user data insertion;
203, MME is according to the LAI of TAI derivation user at the Acceditation Area at UTRAN/GERAN place, and further selects VLR according to LAI;
204, MME sends the CS position updating request to the VLR that selects, and carries the LAI of derivation;
205, VLR preserves the address of MME, set up with MME between related, MSC carries out the business operation relevant with this UE with MME through this association;
206, VLR carries out the CS position updating process;
207, VLR through with MME between related home position upgrade response;
208, MME returns to UE through E-UTRAN and adheres to acceptance response, carries the LAI that MME derives.
In the actual deployment of E-UTRAN; Because the border of TA and LA can not be in full accord; The LAI that therefore can cause MME to derive is inconsistent with the LAI of the actual UTRAN/GERAN of living in of UE, and then the MSC/VLR that can cause MME to select is inconsistent with the MSC/VLR of the actual falling selection of UE.This situation can influence the call features of calling out when falling after rise.
Similar at EPS position updating process and attaching process, if finding the LAI that TAI derives, MME changes, then reselect VLR, initiate position updating process to the MSC/VLR that selects.
Fig. 3 exhales flow process, UE to reside in the EPS network for rising of the single wireless mode CSFB of prior art, and has carried out combined registering at MME and MSC/VLR, and this moment, the user initiated the speech business calling, and the CSFB process may further comprise the steps:
301, UE sends the request of activating business through E-UTRAN to MME, carries the CSFB indication in the message;
302, MME sends the CSFB notification message that contains the CSFB indication to E-UTRAN, and indication E-UTRAN UE will fall back to the CS network.
303, E-UTRAN obtains measurement report to UE alternatively, falls back to concrete GERAN/UTRAN objective network according to measurement report decision needs.
If there is ongoing PS data service in 304 UE at the EPS network, E-UTRAN triggers the PS switching flow, switches to the GERAN/UTRAN network to the PS data service, because this step and the present invention are irrelevant, this step is not described in detail.
If UE or network do not support PS to switch, then ongoing data service is hung up.
305, behind the completion said process, UE is linked into and falls target GERAN/UTRAN network after rise, sends the service access request message at the GERAN/UTRAN network to the MSC/VLR that the target of being served inserts the sub-district.
If 306 above-mentioned MSC/VLR are the MSC/VLR of UE combined registering, then MSC judges according to user's business datum, accepts this service access request, returns the service access response message to UE.
If MSC/VLR described in 307 steps 305 is not the MSC/VLR of UE combined registering, this MSC/VLR user data of no use, MSC/VLR returns the service access refuse information to UE, and notice UE initiates more new technological process of position.
For explaining conveniently, in the case, claim that the MSC/VLR that the user inserts is target MSC/VLR, the MSC/VLR of combined registering is source MSC/VLR.
308, UE initiates position updating process again at GREAN/UTRAN.
In this process, target MSC/VLR need obtain authentication parameter to HLR, carry out the authentication process, and after the position was updated to merit, HLR notification source MSC/VLR deletes user data, and source MSC/VLR also needs further notice MME deletion incidence relation.
309, UE makes a call to set up to target MSC/VLR and asks, and accomplishes flow, sets up the calling between UE and the remote subscriber.
According to foregoing description; UE is in falling back to the target CS network development process; If it is not identical MSC/VLR that the MSC/VLR that the Target cell that falls after rise as UE is served unites the MSC/VLR that adheres to UE in the EPS network insertion, need the extra time that be increased in the position renewal on the new MSC/VLR, increased the service access time; Be presented as that directly call set-up time is long, influence user experience.
Exhale flow process the end that Fig. 4 shows the single wireless mode CSFB of prior art.UE resides in the EPS network, and carries out combined registering at MME and MSC/VLR, if at this moment there is CS to go into to exhale GMSC, the CSFB process may further comprise the steps:
401, GMSC sends initial address message to MSC.
402, MSC/VLR sends the CS paging request through MME to UE.
403, MME sends paging request through E-UTRAN to UE, wherein comprises the indication of CS territory, indicates this paging from the CS territory.
404, UE receives paging request, sends the request of activating business through E-UTRAN to MME, carries the CSFB indication in the message, and indication MME carries out the CSFB process.
405, MME sends notice CSFB message to E-UTRAN, and indication E-UTRAN UE need fall back to the CS network.
406, E-UTRAN obtains measurement report to UE alternatively, falls back to concrete Target cell according to measurement report decision needs.
If there is ongoing data service in 407 UE at the EPS network, E-UTRAN triggers the PS switching flow, switches to the GERAN/UTRAN network to the PS data service, because this step and the present invention are irrelevant, this step is not described in detail.
If UE or network do not support PS to switch, then ongoing data service is hung up.
408, behind the completion said process, UE is linked into and falls target GERAN/UTRAN network after rise, and UE sends page response at the GERAN/UTRAN network to the MSC/VLR that the service purpose inserts the sub-district.
If 409 above-mentioned MSC/VLR are the MSC/VLR of UE combined registering, then MSC/VLR sends setup requests to UE, accomplishes the subsequent voice calls process.
If the said MSC/VLR of 410 steps 408 is not the MSC/VLR of UE combined registering, this MSC/VLR user data of no use, MSC/VLR returns the release connection message to UE, and notice UE initiates more new technological process of position.
For explaining conveniently, in the case, claim that the MSC/VLR that the user inserts is target MSC/VLR, the MSC/VLR of combined registering is source MSC/VLR.
411, UE initiates position updating process again at UTRAN.
In this process, target MSC/VLR need obtain authentication parameter to HLR, carry out the authentication process, and after the position was updated to merit, HLR notification source MSC/VLR deletes user data, and source MSC/VLR also needs further notice MME deletion incidence relation.
412, GMSC uses the roaming retry mechanism, resends setup requests to target MSC/VLR, accomplishes the subsequent voice calls process.
Exhale process similar with rising, to exhale in the process eventually, UE falls back in the target CS network; When if the MSC/VLR that the Target cell that falls after rise as UE is served and UE are not identical MSC at the MSC/VLR of EPS network insertion combined registering; Need the extra time that new MSC/VLR goes up registration that is increased in, and use the roaming retry mechanism to make a call again, increased the service access time; Be presented as that directly call set-up time is long, influence user experience.
Can find out that from above flow process the CS calling procedure that CSFB calling procedure of the prior art is traditional is relatively called out and extended greatly turn-on time, influences user's business experience.
Summary of the invention
The technical problem that the present invention will solve provides a kind of method and double reception mode terminal of realizing that circuit switching fall-back is professional, and the MSC/VLR of the Target cell that fall after rise at the solution terminal and UE are in the MSC/VLR and the problem inequality of EPS network combined registering.
For solving the problems of the technologies described above, a kind of method that realizes that circuit switching fall-back is professional of the present invention comprises:
The double reception mode terminal obtains the Location Area Identification (LAI) that global system for mobile communications strengthens the sub-district of wanting resident in Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN);
The double reception mode terminal is initiating to adhering to uniting of evolution global system for mobile communications wireless access network (E-UTRAN) and GERAN/UTRAN when upgrading with co-location LAI to be sent to Mobility Management Entity (MME);
MME selects VLR Visitor Location Register according to received LAI for the double reception mode terminal.
Further, the double reception mode terminal step of obtaining LAI comprises:
Want resident sub-district among PLMN (PLMN) that will be resident among the double reception mode terminal selection GERAN/UTRAN and this PLMN;
The double reception mode terminal receives the broadcast among the GERAN/UTRAN, obtains the LAI of the sub-district of wanting resident.
The step of sub-district that will be resident among the PLMN that further, the selection of double reception mode terminal will be resident and this PLMN comprises:
The double reception mode terminal receives the broadcast of E-UTRAN, comprises the information in abutting connection with the professional GERAN/UTRAN of support circuit-switched falling of E-UTRAN in this broadcast;
The double reception mode terminal is wanted resident sub-district according to the information that falls professional GERAN/UTRAN in abutting connection with support circuit-switched after rise among the PLMN that selection will be resident and this PLMN.
Further, when the LAI that the double reception mode terminal sends to MME was a plurality of, MME selected one of them from a plurality of LAI, selected VLR Visitor Location Register according to selected LAI.
Further, the co-location that the double reception mode terminal is initiated is upgraded the co-location that comprises when this double reception mode terminal moves to other lane place outside the resident lane place and is upgraded, and this co-location is upgraded and comprised:
The double reception mode terminal sends to MME with the LAI of the lane place that moves to;
When MME inspection found that the LAI of double reception mode terminal changes, the LAI of the lane place that moves to according to the double reception mode terminal reselected VLR Visitor Location Register for this double reception mode terminal.
Further, a kind of method that realizes that circuit switching fall-back is professional comprises:
The double reception mode terminal sends the request of activating business to Mobility Management Entity (MME), in this request of activating business, carries this double reception mode terminal and supports the professional indication information of double reception mode circuit domain dropping;
MME sends application request to the resident evolution global system for mobile communications wireless access network (E-UTRAN) of double reception mode terminal, and notifies this E-UTRAN double reception mode terminal support to support that double reception mode circuit domain dropping is professional;
E-UTRAN notice double reception mode terminal executive circuit domain dropping is professional, falls back to resident global system for mobile communications and strengthens in Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN).
Further, MME carries the Location Area Identification (LAI) of double reception mode terminal resident sub-district in GERAN/UTRAN in the application request that the resident E-UTRAN of double reception mode terminal sends;
When E-UTRAN notifies double reception mode terminal executive circuit domain dropping professional, select the Target cell of the regional interior wireless area of LAI indication as the Packet Service switching according to LAI and wireless measurement result.
Further, a kind of method that realizes that circuit switching fall-back is professional comprises:
Mobility Management Entity (MME) sends paging request to the double reception mode terminal, carries circuit switching (CS) indication in this paging request;
The double reception mode terminal sends the request of activating business to MME, in this request of activating business, carries this double reception mode terminal and supports the professional indication information of double reception mode circuit domain dropping;
MME sends application request to the resident evolution global system for mobile communications wireless access network (E-UTRAN) of double reception mode terminal, and notifies this E-UTRAN double reception mode terminal support to support that double reception mode circuit domain dropping is professional;
E-UTRAN notice double reception mode terminal executive circuit domain dropping is professional, falls back to resident global system for mobile communications and strengthens in Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN).
Further, a kind of double reception mode terminal comprises: information acquisition module and Registering modules, wherein:
The information acquisition module is used for obtaining global system for mobile communications and strengthens the Location Area Identification (LAI) that Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN) is wanted resident sub-district;
Registering modules is used for after the information acquisition module gets access to LAI, is initiating to adhering to uniting of evolution global system for mobile communications wireless access network (E-UTRAN) and GERAN/UTRAN when upgrading with co-location LAI to be sent to Mobility Management Entity.
Further, the information acquisition module comprises network selecting unit and information receiving unit, wherein:
The network selecting unit, being used for selecting GERAN/UTRAN to want among resident PLMN (PLMN) and this PLMN will resident sub-district;
Information receiving unit is used for after the network selecting unit selects PLMN and this PLMN to want resident sub-district, receiving the broadcast among the GERAN/UTRAN, obtains the LAI of the sub-district of wanting resident.
Further; During sub-district that the network selecting unit select to be wanted to want resident among resident PLMN and this PLMN; Receive the broadcast of E-UTRAN; What comprise E-UTRAN in this broadcast falls the information of professional GERAN/UTRAN after rise in abutting connection with support circuit-switched, falls the information of professional GERAN/UTRAN according to this after rise in abutting connection with support circuit-switched, wants resident sub-district among the PLMN that selects to want resident and this PLMN.
Further, this terminal also comprises Call Control Block, wherein:
Call Control Block; Be used for Registering modules accomplish unite adhere to after, when carrying out calling service, send the request of activating business to MME; In this request of activating business, carry this double reception mode terminal and support the professional indication information of double reception mode circuit domain dropping; And the professional notice of executive circuit domain dropping of reception E-UTRAN, after receiving the professional notice of executive circuit domain dropping, fall back among the resident GERAN/UTRAN.
Further; Call Control Block; Also be used for when carrying out called service; After the paging request that receives the Mobility Management Entity transmission, send the request of activating business to MME, in this request of activating business, carry this double reception mode terminal and support the professional indication information of double reception mode circuit domain dropping.
In sum; The present invention through the double reception mode terminal when prepare inserting E-UTRAN or residing in E-UTRAN; Receive the wireless messages of GERAN/UTRAN, selections needs PLMN and the sub-district of resident GERAN/UTRAN, and unites to adhere to upgrade with co-location through E-UTRAN and ask to carry the resident cell information of wanting; Make MME can obtain the accurate position of UE in GERAN/UTRAN; Select correct MSC/VLR, thereby guarantee that UE is attached to correct MSC/VLR all the time, solved and adhered to MSC in present single wireless mode UE circuit domain dropping business and call out that to insert MSC possibly not be the problem of same MSC; Shorten the call set-up time of caller process and called process, improved user experience.
Description of drawings
Fig. 1 is the network architecture diagram of single wireless mode CSFB in the prior art;
Fig. 2 is the single wireless mode CSFB of a prior art attachment flow;
Fig. 3 is that the single wireless mode CSFB of prior art rises and exhales flow process;
Fig. 4 is that the single wireless mode CSFB of prior art exhales flow process eventually;
Fig. 5 is the associating attachment flow of the double reception pattern CSFB of applying examples of the present invention;
Fig. 6 is the associating period position new technological process more of the double reception pattern CSFB of applying examples of the present invention;
Fig. 7 is the co-location new technological process more of the double reception pattern CSFB of applying examples of the present invention;
Fig. 8 is that the rising of double reception pattern CSFB of applying examples of the present invention exhaled flow process;
Fig. 9 exhales flow process the end of the double reception pattern CSFB of applying examples of the present invention;
Figure 10 is the Organization Chart of the double reception mode terminal of applying examples of the present invention.
Embodiment
Because in the CSFB business at single wireless mode terminal; The MSC/VLR of the Target cell that UE falls after rise and UE maybe be also inequality at the MSC/VLR of EPS network insertion combined registering; Lengthening calling turn-on time that causes UE, this execution mode consider that double reception pattern (Dual Receiver, Dual Rx) terminal can accept the broadcast of E-UTRAN and UTRAN/GERAN simultaneously; Also can receive the beep-page message of E-UTRAN; But transmitter unit can only be operated in the characteristics under a kind of wireless mode, can consider to adopt the double reception mode terminal to realize that CSFB is professional, solves the problem that exists in the CSFB business.Two single-shot terminals of receiving that the double reception mode terminal is just usually said; Between single wireless mode terminal and two wireless modes terminal; This Terminal Type and single wireless terminal cost basically identical also have certain advantage at aspects such as power consumption and air interference than two wireless modes terminal.
The system that the realization CSFB of this execution mode is professional comprises double reception mode terminal, E-UTRAN, MME, GERAN/UTRAN and MSC/VLR.
The double reception mode terminal has the ability of the broadcast of accepting E-UTRAN and UTRAN/GERAN simultaneously; In E-UTRAN and GERAN/UTRAN region covered; When prepare inserting E-UTRAN or when resident E-UTRAN; Monitor the broadcast of GERAN/UTRAN simultaneously, carry out selection, cell selecting and the district reselecting of the public land mobile network (Public Land Mobility Network is called for short PLMN) of GERAN/UTRAN.
Double reception mode terminal (UE) is being united the LAI that attach request and co-location are upgraded the sub-district of the GERAN/UTRAN that carries UE selection or gravity treatment in the request; After adhering to or co-location upgrades successfully, reside in the selected GERAN/UTRAN Acceditation Area.When the CS speech business took place, UE sent activating business request to EPS, fall after rise back resident GERAN/UTRAN Acceditation Area, execution caller or called process.
MME carries out the EPS attaching process according to request, or the EPS position updating process, and selects MSC/VLR according to the LAI that carries in the request, sends the CS position updating request to the MSC/VLR that selects; When the CS speech business takes place, support that UE falls back GERAN/UTRAN after rise.
After E-UTRAN received the CSFB notice, notice UE carried out the CSFB process; E-UTRAN can notify UE in abutting connection with the information of supporting to fall after rise professional GERAN/UTRAN in broadcast.
MSC/VLR receives the CS position updating request that MME sends, executing location renewal process; When the CS speech business takes place, carry out the CS calling procedure; Exhaling in the process eventually, sending paging request through MME.
GERAN/UTRAN provides the CS in the falling business to insert, and further provides PS to insert.
The method that the realization CSFB of this execution mode is professional is applied to GERAN/UTRAN and E-UTRAN double reception pattern UE, comprising:
Steps A, UE select PLMN and the sub-district of GERAN/UTRAN that will be resident, and receive the broadcast of GERAN/UTRAN, obtain the LAI of sub-district;
Step B, UE send the associating attach request through E-UTRAN, or the co-location renewal, carry the LAI or the LAI tabulation of the sub-district of selected GERAN/UTRAN;
Step C, MME obtain and select LAI and the corresponding MSC/VLR of LAI; Send position updating request to selected MSC/VLR; After MSC/VLR executing location renewal process, return attachment response or position renewal response through E-UTRAN to UE, carry the LAI that MME selects;
Step D, UE reside in the Acceditation Area of the corresponding GERAN/UTRAN of selected LAI;
Step e, UE initiatively initiate CS and rise when exhaling business, notice EPS network, fall back to then resident GERAN/UTRAN carry out CS and work the business of exhaling; When the CS callee function that exists UE, MSC/VLR is through EPS paging UE, UE notice EPS network, fall back to then resident GERAN/UTRAN carry out the CS callee function.
UE receives the broadcast of GERAN/UTRAN in the steps A, carries out the PLMN selection course, and further carries out the cell selecting process.If UE has resided in certain sub-district of GERAN/UTRAN, change when detecting residing wireless environment condition, when promptly current area does not satisfy the wireless telecommunications requirement, carry out cell reselection process, select new resident sub-district.
E-UTRAN can also dispose in abutting connection with the information of supporting the GERAN/UTRAN that CSFB is mutual; UE is in the PLMN of GERAN/UTRAN selection and cell selecting process; According to this Information Selection PLMN and sub-district, select in the GERAN/UTRAN tabulation that promptly from the broadcast of E-UTRAN, comprises.UE can choose resident PLMN of one or more possibilities and the sub-district of selected PLMN.
Co-location is upgraded and is asked to comprise that the cycle co-location is upgraded request and co-location is upgraded request among the step B.
Among the step C, if what carry in the request is LAI tabulation, MME at first selects suitable LAI, and then selects MSC/VLR according to LAI.
Among the step D, when UE resides in GERAN/UTRAN, receive the broadcast of GERAN/UTRAN, in cell reselection process, find new Acceditation Area, the co-location renewal process among the execution in step B.
In the step e, it is professional that UE shows that ground notifies MME execution double reception mode circuit to fall after rise, MME and the further LAI that notifies E-UTRAN user institute persistent district.
Fig. 5 is the associating attachment flow of the double reception pattern CSFB of this execution mode.This moment, UE was positioned at the area of coverage of E-UTRAN and GERAN/UTRAN, as UE during from the E-UTRAN network insertion, after carrying out the associating attaching process, could use EPS business and CSFB business, and detailed process may further comprise the steps:
501, UE carries out the selection course of PLMN (public land mobile network) among the E-UTRAN and the cell selecting process of place PLMN, PLMN and sub-district among the E-UTRAN that selects to want resident, and receive the broadcast of E-UTRAN, obtain the TAI of persistent district;
Owing to possibly have a plurality of GERAN/UTRAN at the same area; It is mutual to have only part GERAN/UTRAN to support with the CSFB of this E-UTRAN; Therefore UE selects GERAN/UTRAN for ease, can in E-UTRAN, dispose in abutting connection with the information of supporting the GERAN/UTRAN that CSFB is mutual, comprises information and/or the cell information of the PLMN among the GERAN/UTRAN; And broadcast through broadcast channel, the GERAN/UTRAN that is disposed can be more than one.
UE receives the information of E-UTRAN through the mutual GERAN/UTRAN of the support CSFB of broadcast channel broadcasts.
502, UE carries out selection course and the cell selecting of PLMN among the GERAN/UTRAN, PLMN among the GERAN/UTRAN that selects to want resident and the sub-district among the PLMN, and receive the broadcast of GERAN/UTRAN, obtain the LAI of persistent district;
UE can select the PLMN among the GERAN/UTRAN according to Existing policies, if UE has received the information of supporting the GERAN/UTRAN that CSFB is mutual in the E-UTRAN broadcast, then according to the one or more GERAN/UTRAN of this Information Selection.
503, UE sends the associating attach request through E-UTRAN to MME, carries LAI or the LAI tabulation of TAI and the selected GERAN/UTRAN of selected E-UTRAN;
UE can carry the indication of double reception pattern in the associating attach request, show that ground indication UE supports the double reception pattern.
504, MME carries out the EPS attaching process;
505, MME obtains LAI or the LAI tabulation of GERAN/UTRAN from the associating attach request, selects LAI, selects VLR according to LAI;
If only comprise a LAI in the associating attach request, it is mutual to judge then whether the corresponding GERAN/UTRAN of this LAI supports with the CSFB of E-UTRAN, if support, then utilizes this LAI to select VLR; If comprise the LAI tabulation in the attach request,, such as the priority that disposes among the MME, from the LAI tabulation, select LAI, and utilize selected LAI to select VLR then according to strategy.
If the GERAN/UTRAN that above-mentioned LAI is corresponding does not support the CSFB with this E-UTRAN; Then MME uses prior art; According to TAI derivation LAI, and according to the LAI selection VLR that derives, perhaps MME directly returns attachment response; Notice UE unite adhere to unsuccessful, and the information that can in response, carry the GERAN/UTRAN that can choose.
506, MME sends the CS position updating request to the VLR that selects, and carries selected LAI;
507, VLR preserves the address of MME, set up with MME between related;
508, MSC/VLR carries out the CS position updating process;
509, the MSC/VLR home position upgrades response;
510, MME returns to UE through E-UTRAN and adheres to acceptance response, and carries the LAI that MME selects;
511, UE resides in E-UTRAN Acceditation Area and the corresponding GERAN/UTRAN Acceditation Area of LAI, continues to receive simultaneously the broadcast of E-UTRAN and GERAN/UTRAN.
Because this resident and common resident mode is different; Receive only the broadcast of GERAN/UTRAN, and paging receiving information not can not sent message such as position renewal from GERAN/UTRAN yet; Therefore it is resident to be called void, resides in GERAN/UTRAN in the follow-up explanation and refers to that all this void is resident.
If UE receives that MME returns unite adhering to unsuccessful response after; The PLMN that UE can carry out among the GERAN/UTRAN again selects and cell selecting; Or select according to the information of GERAN/UTRAN of appointment in the response, repeat above-mentioned associating attaching process then, for fear of UE because failure; The continuous associating attaching process of carrying out, the number of times and the interval that need restriction to carry out.
If UE receives LAI and own select inconsistent in the associating attachment response that MME returns, the then resident corresponding GERAN/UTRAN of LAI in the associating attachment response, or to fall after rise be single wireless mode CSFB.
Fig. 6 is the associating period position new technological process more of the double reception pattern CSFB of this execution mode.This moment, UE was positioned at the area of coverage of E-UTRAN and GERAN/UTRAN, and had united and adhered to successfully, resided among E-UTRAN, the GERAN/UTRAN, and this moment, UE needed periodically to carry out the co-location renewal process at the EPS network, and detailed process may further comprise the steps:
601, UE sends the cycle co-location through E-UTRAN to MME and upgrades request, carries the TAI of current resident E-UTRAN and the LAI of GERAN/UTRAN;
602, MME carries out the EPS position updating process;
Because this moment, LAI did not change, MME need not send position updating request to VLR.
603, MME returns co-location renewal response through E-UTRAN to UE.
UE continues to reside among E-UTRAN and the GERAN/UTRAN.
Fig. 7 is the co-location new technological process more of the double reception pattern CSFB of this execution mode; This moment, UE was positioned at the area of coverage of E-UTRAN and GERAN/UTRAN, and had united and adhered to successfully, resided among E-UTRAN, the GERAN/UTRAN; If UE finds to move to other lane place of GERAN/UTRAN; The Acceditation Area sign of Acceditation Area sign and former sub-district that is new sub-district is different, UE initiation co-location renewal process then, and detailed process may further comprise the steps:
701, UE sends co-location through E-UTRAN to MME and upgrades request, carries the Location Area Identification LAI (LAI of the lane place that moves to is called for short new LAI) of the GERAN/UTRAN after the renewal;
702, the LAI that carries in the MME inspection discovery co-location renewal request and the former LAI of double reception mode terminal reselect VLR according to new LAI not simultaneously, and execution in step 703; Otherwise, finish;
703, MME sends position updating request to VLR;
The VLR that selects maybe be different with original VLR, the address that the new VLR that selects this moment need write down MME, and foundation is related with MME's.
704, VLR carries out the CS position updating process;
If this VLR is not original VLR, then in position updating process, can executing location cancel process, notify former VLR deletion user to adhere to information.
705, the VLR home position upgrades response;
706, MME returns to UE through E-UTRAN and adheres to acceptance response, takes new LAI;
707, UE is resident to new GERAN/UTRAN Acceditation Area.
Fig. 8 is that the rising of double reception pattern CSFB of this execution mode exhaled flow process, and this moment, UE was positioned at the area of coverage of E-UTRAN and GERAN/UTRAN, and had united and adhered to successfully; Reside among E-UTRAN, the GERAN/UTRAN; When UE initiates the CS calling, carry out the CSFB process, may further comprise the steps:
801, UE sends the request of activating business through E-UTRAN to MME;
UE can carry double reception pattern CSFB indication in extended requests, show that ground explanation UE supports double reception pattern CSFB;
802, MME sends application request to E-UTRAN, carries the professional indication of double reception pattern CSFB, and indication E-UTRAN carries out double mode CSFB operation;
MME is according to the UE double reception pattern CSFB that UE carries in extended requests in step 801 indication, or unite adhere to or the co-location renewal process in obtain UE and support double reception pattern CSFB.
In application request, can further carry the LAI of the resident GERAN/UTRAN of user, be used for packet domain and switch.
If 803 do not have packet switch domain service need switch the time, then E-UTRAN does not carry out the wireless measurement query manipulation, directly execution in step 805; Otherwise, obtain wireless measurement report, execution in step 804 from UE;
804, E-UTRAN is according to the result of wireless measurement, and the GERAN/UTRAN that selects packet switch domain service to fall after rise carries out Packet Service and carries handoff procedure, carries out 806 then;
If carry the LAI of the resident GERAN/UTRAN of user in the step 802 in the application request, then be positioned at the Target cell of the wireless area in LAI zone as the Packet Service switching according to LAI and the preferential selection of wireless measurement result.
805, E-UTRAN sends the CSFB indication, and like the E-UTRAN release message, notice UE carries out the CSFB process;
806, UE falls back among the resident GERAN/UTRAN, sends service request through GERAN/UTRAN to MSC/VLR;
807, MSC/VLR accepts this service access request, returns the service access response message to UE;
808, UE initiates the CS calling in the GERAN/UTRAN network.
Fig. 9 exhales flow process the end of the double reception pattern CSFB of this execution mode; This moment, UE was positioned at the area of coverage of E-UTRAN and GERAN/UTRAN; And united and adhered to successfully, resided among E-UTRAN, the GERAN/UTRAN, when exhaling to the end of this UE; At first be routed to gateway MSC (GMSC), follow-up CSFB process may further comprise the steps:
901, GMSC sends initial address message to MSC/VLR;
902, MSC/VLR sends the CS paging request through MME to UE;
903, MME sends paging request through E-UTRAN to UE, wherein comprises the indication of CS territory, indicates this paging from the CS territory;
904, UE sends the request of activating business through E-UTRAN to MME;
UE can carry double reception pattern CSFB indication in the request of activating business, show that ground explanation UE supports double reception pattern CSFB;
905, MME sends application request to E-UTRAN, carries the professional indication of double reception pattern CSFB, and indication E-UTRAN carries out double mode CSFB operation;
MME is according to the UE double reception pattern CSFB that UE carries in extended requests in step 904 indication, or unite adhere to or the co-location renewal process in obtain UE and support double reception pattern CSFB.
In application request, can further carry the LAI of the resident GERAN/UTRAN of user, be used for packet domain and switch.
If 906 do not have packet switch domain service need switch the time, then E-UTRAN does not carry out the wireless measurement query manipulation, directly execution in step 908; Otherwise, obtain wireless measurement report, execution in step 907 from UE;
907, E-UTRAN is according to the result of wireless measurement, and the GERAN/UTRAN that selects packet switch domain service to fall after rise carries out Packet Service and carries handoff procedure, carries out 909 then;
If carry the LAI of the resident GERAN/UTRAN of user in the step 904 in the application request, then be positioned at the Target cell of the wireless area in LAI zone as the Packet Service switching according to LAI and the preferential selection of wireless measurement result.
908, E-UTRAN sends the CSFB indication, and like the E-UTRAN release message, notice UE carries out the CSFB process;
909, UE falls back among the resident GERAN/UTRAN, sends page response through GERAN/UTRAN to MSC/VLR;
910, UE carries out the whole process of exhaling of CS in the GERAN/UTRAN network.
Can find out from the embodiment of Fig. 8 and Fig. 9; Because the Acceditation Area that UE falls after rise is exactly the resident Acceditation Area of user; MSC/VLR that selects in the time of can not falling after rise and the inconsistent phenomenon of MSC/VLR of adhering to, and when no packet switch domain service need switch, need not carry out wireless measurement report inquiry; Therefore call setup speed is fast, has improved user experience.
Figure 10 is the double reception mode terminal of this execution mode, comprising: information acquisition module and Registering modules, wherein:
The information acquisition module is used for obtaining global system for mobile communications and strengthens the Location Area Identification (LAI) that Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN) is wanted resident sub-district;
Registering modules is used for after the information acquisition module gets access to LAI, is initiating to adhering to uniting of evolution global system for mobile communications wireless access network (E-UTRAN) and GERAN/UTRAN when upgrading with co-location LAI to be sent to Mobility Management Entity.
The information acquisition module comprises network selecting unit and information receiving unit, wherein:
The network selecting unit, being used for selecting GERAN/UTRAN to want among resident PLMN (PLMN) and this PLMN will resident sub-district;
Information receiving unit is used for after the network selecting unit selects PLMN and this PLMN to want resident sub-district, receiving the broadcast among the GERAN/UTRAN, obtains the LAI of the sub-district of wanting resident.
During sub-district that the network selecting unit select to be wanted to want resident among resident PLMN and this PLMN; Receive the broadcast of E-UTRAN; The information that comprises E-UTRAN in this broadcast in abutting connection with the professional GERAN/UTRAN of support circuit-switched falling; According to this information in abutting connection with the professional GERAN/UTRAN of support circuit-switched falling, will resident sub-district among the PLMN that selection will be resident and this PLMN.
The terminal also comprises Call Control Block, Call Control Block, be used for Registering modules accomplish unite adhere to after; When carrying out calling service; Send the request of activating business to MME, in this request of activating business, carry this double reception mode terminal and support the professional indication information of double reception mode circuit domain dropping, and receive the professional notice of executive circuit domain dropping of E-UTRAN; After receiving the professional notice of executive circuit domain dropping, fall back among the resident GERAN/UTRAN.
Call Control Block; Also be used for when carrying out called service; After the paging request that receives the Mobility Management Entity transmission, send the request of activating business to MME, in this request of activating business, carry this double reception mode terminal and support the professional indication information of double reception mode circuit domain dropping.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (13)
1. method that realizes that circuit switching fall-back is professional comprises:
The double reception mode terminal obtains the Location Area Identification (LAI) that global system for mobile communications strengthens the sub-district of wanting resident in Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN);
Said double reception mode terminal is initiating to adhering to uniting of evolution global system for mobile communications wireless access network (E-UTRAN) and said GERAN/UTRAN when upgrading with co-location said LAI to be sent to Mobility Management Entity (MME);
Said MME is that said double reception mode terminal is selected VLR Visitor Location Register according to received LAI.
2. the method for claim 1 is characterized in that, the step that said double reception mode terminal obtains said LAI comprises:
Will resident sub-district among the PLMN (PLMN) that said double reception mode terminal is selected among the said GERAN/UTRAN to want resident and this PLMN;
Said double reception mode terminal receives the broadcast among the said GERAN/UTRAN, obtains the LAI of said sub-district that will be resident.
3. method as claimed in claim 2 is characterized in that, said double reception mode terminal selects the step of said sub-district of wanting to want resident among resident PLMN and this PLMN to comprise:
Said double reception mode terminal receives the broadcast of said E-UTRAN, comprises the information in abutting connection with the professional GERAN/UTRAN of support circuit-switched falling of said E-UTRAN in this broadcast;
Said double reception mode terminal falls the information of professional GERAN/UTRAN according to said after rise in abutting connection with support circuit-switched, selects said the wanting will resident sub-district among resident PLMN and this PLMN.
4. the method for claim 1 is characterized in that, when the LAI that said double reception mode terminal sends to said MME was a plurality of, said MME selected one of them from a plurality of LAI, select said VLR Visitor Location Register according to selected LAI.
5. the method for claim 1; It is characterized in that; The co-location that said double reception mode terminal is initiated is upgraded the co-location that comprises when this double reception mode terminal moves to other lane place outside the resident lane place and is upgraded, and this co-location is upgraded and comprised:
Said double reception mode terminal sends to said MME with the LAI of the lane place that moves to;
When said MME inspection found that the LAI of said double reception mode terminal changes, the LAI of the lane place that moves to according to said double reception mode terminal reselected VLR Visitor Location Register for this double reception mode terminal.
6. method that realizes that circuit switching fall-back is professional comprises:
The double reception mode terminal sends the request of activating business to Mobility Management Entity (MME), in this request of activating business, carries this double reception mode terminal and supports the professional indication information of double reception mode circuit domain dropping;
Said MME sends application request to the resident evolution global system for mobile communications wireless access network (E-UTRAN) of said double reception mode terminal, and notifies the support of the said double reception mode terminal of this E-UTRAN to support that double reception mode circuit domain dropping is professional;
Said E-UTRAN notifies said double reception mode terminal executive circuit domain dropping professional, falls back to resident global system for mobile communications and strengthens in Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN).
7. method as claimed in claim 6 is characterized in that:
Said MME carries the Location Area Identification (LAI) of said double reception mode terminal resident sub-district in GERAN/UTRAN in the application request that the resident E-UTRAN of said double reception mode terminal sends;
When said E-UTRAN notifies said double reception mode terminal executive circuit domain dropping professional, select the Target cell of the regional interior wireless area of said LAI indication as the Packet Service switching according to said LAI and wireless measurement result.
8. method that realizes that circuit switching fall-back is professional comprises:
Mobility Management Entity (MME) sends paging request to the double reception mode terminal, carries circuit switching (CS) indication in this paging request;
Said double reception mode terminal sends the request of activating business to said MME, in this request of activating business, carries this double reception mode terminal and supports the professional indication information of double reception mode circuit domain dropping;
Said MME sends application request to the resident evolution global system for mobile communications wireless access network (E-UTRAN) of said double reception mode terminal, and notifies the support of the said double reception mode terminal of this E-UTRAN to support that double reception mode circuit domain dropping is professional;
Said E-UTRAN notifies said double reception mode terminal executive circuit domain dropping professional, falls back to resident global system for mobile communications and strengthens in Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN).
9. double reception mode terminal comprises: information acquisition module and Registering modules, wherein:
Said information acquisition module is used for obtaining global system for mobile communications and strengthens the Location Area Identification (LAI) that Radio Access Network (GERAN)/global system for mobile communications wireless access network (UTRAN) is wanted resident sub-district;
Said Registering modules; Be used for after said information acquisition module gets access to said LAI; Initiating said LAI to be sent to Mobility Management Entity to adhering to uniting of evolution global system for mobile communications wireless access network (E-UTRAN) and said GERAN/UTRAN when upgrading with co-location.
10. terminal as claimed in claim 9 is characterized in that, said information acquisition module comprises network selecting unit and information receiving unit, wherein:
Said network selecting unit, being used for selecting said GERAN/UTRAN to want among resident PLMN (PLMN) and this PLMN will resident sub-district;
Said information receiving unit is used for after said network selecting unit selects PLMN and this PLMN to want resident sub-district, receiving the broadcast among the said GERAN/UTRAN, obtains the said LAI that wants resident sub-district.
11. terminal as claimed in claim 10; It is characterized in that; When said sub-district of wanting to want resident among resident PLMN and this PLMN is selected in said network selecting unit, receive the broadcast of said E-UTRAN, what comprise said E-UTRAN in this broadcast falls the information of professional GERAN/UTRAN after rise in abutting connection with support circuit-switched; Fall the information of professional GERAN/UTRAN according to this after rise in abutting connection with support circuit-switched, selects said the wanting will resident sub-district among resident PLMN and this PLMN.
12. terminal as claimed in claim 9 is characterized in that, this terminal also comprises Call Control Block, wherein:
Said Call Control Block; Be used for said Registering modules accomplish said unite adhere to after, when carrying out calling service, send the request of activating business to said MME; In this request of activating business, carry this double reception mode terminal and support the professional indication information of double reception mode circuit domain dropping; And the professional notice of the executive circuit domain dropping that receives said E-UTRAN, after receiving the professional notice of said executive circuit domain dropping, fall back among the resident GERAN/UTRAN.
13. terminal as claimed in claim 12 is characterized in that:
Said Call Control Block; Also be used for when carrying out called service; After the paging request that receives said Mobility Management Entity transmission; Send the request of activating business to said MME, in this request of activating business, carry this double reception mode terminal and support the professional indication information of double reception mode circuit domain dropping.
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| CN2010105896031A CN102547891A (en) | 2010-12-15 | 2010-12-15 | Method for realizing circuit switched fallback business and terminal with double receiving modes |
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| CN2010105896031A CN102547891A (en) | 2010-12-15 | 2010-12-15 | Method for realizing circuit switched fallback business and terminal with double receiving modes |
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Application publication date: 20120704 |