CN105636124A - Method and system for recognizing CSFB (circuit switched fallback business) - Google Patents
Method and system for recognizing CSFB (circuit switched fallback business) Download PDFInfo
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- CN105636124A CN105636124A CN201410605939.0A CN201410605939A CN105636124A CN 105636124 A CN105636124 A CN 105636124A CN 201410605939 A CN201410605939 A CN 201410605939A CN 105636124 A CN105636124 A CN 105636124A
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- 102100021809 Chorionic somatomammotropin hormone 1 Human genes 0.000 claims 2
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- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method for recognizing a CSFB (circuit switched fallback business), and the method is used for a wireless access network element. The method comprises the steps: receiving a non-access layer message transmitted by a user terminal after the user terminal is redirected to a wireless access network; carrying out the analysis of the non-access layer message, and determining that the user terminal triggers the CSFB after the non-access layer message is determined to comprise CSFB indication information. The method can enable a wireless access network side to accurately recognize the CSFB, and improves the user experience of the CSFB. The invention also discloses a system for recognizing the CSFB.
Description
Technical field
The present invention relates to communication technical field, in particular the method and system of a kind of identification circuit domain dropping business.
Background technology
Along with LTE (LongTermEvolution, Long Term Evolution) commercial rollout, CSFB (CircuitSwitchedFallback, circuit domain dropping) it is solve LTE network CS (CircuitSwitch, circuit switching) major way of territory business (such as, speech business).
As shown in Figure 1; CSFB has LTE and GERAN (GSMEDGERadioAccessNetwork for solution; GSMEDGE wireless access network) bimodulus of/UTRAN (UMTSTerrestrialRadioAccessNetwork, UMTS Terrestrial radio access network) access capability or the multimode terminal problem that cannot transmit/receive circuit domain business signal when using LTE to access. CSFB makes terminal can initiate the CS territory business such as voice service under LTE accesses.
CSFB business is generally based on business demand to 2G/3G network, and is not based on covering reason, and therefore CSFB business should return to LTE network as far as possible after 2G/3G network finishing service, allows user enjoy more high speed network traffic. Therefore, RAN (RadioAccessNetwork, the Radio Access Network) side of 2G/3G network needs effectively to identify CSFB business.
CSFB business (UniversalMobileTelecommunicationsSystem from LTE to UMTS, UMTS)/GSM (GlobalSystemforMobileCommunication, global system for mobile communications) there is two ways, one is CSFB switching mode, and one is that CSFB redirects mode. CSFB switching mode has criteria field instruction CSFB business, and RAN side readily identifies, but, mode is redirected for CSFB, the agreement before R10 is not explicitly indicated.
R10 agreement informs wireless network side CSFB business by introducing CSFB indication information element in RRCConnectionRequest message. R9 agreement proposes a kind of method of indirect identification CSFB, that is, if being redirected to 2G/3G network from LTE, then do not carry pre-redirection information (Pre-redirectioninfo) cell in RRCConnectionRequest message. But, LTE starts to introduce from R8 agreement, and how R8 terminal effectively identifies CSFB mode, and agreement does not have clear stipulaties.
Therefore, although R9 agreement may determine that whether redirection is from LTE, but CSFB business can not accurately be determine whether. Therefore, for R8/R9 terminal, Radio Access Network side can not effectively identify the problem of CSFB business, the solution that current agreement is not good.
Summary of the invention
The technical problem to be solved is to provide the method and system of a kind of identification circuit domain dropping business, it is possible to make Radio Access Network side accurately identify out circuit domain dropping business, thus improving the Consumer's Experience of circuit domain dropping business.
In order to solve above-mentioned technical problem, a kind of method that the invention provides identification circuit domain dropping business, it is applied to wireless access network element, the method includes:
After knowing that user terminal is redirected to this wireless access network, receive the non-access layer information that user terminal sends;
Described non-access layer information is resolved, after determining that described non-access layer information carries circuit domain dropping business CSFB instruction information, it is determined that described user terminal triggers CSFB business.
Further, the method also includes following feature:
Described non-access layer information includes Non-Access Stratum initial direct-sending message.
Further, the method also includes following feature:
Described Non-Access Stratum initial direct-sending message includes: connection management service request information and/or location area updating request message.
Further, the method also includes following feature:
Determine that described non-access layer information carries CSFB and indicates information, including:
Extract connection management service request information or the additional undated parameter cell of location area updating request message, it is determined that it is 1 that the circuit domain dropping of described additional undated parameter cell exhales CSMT parameter or circuit domain dropping to act the value exhaling CSMO parameter eventually.
Further, the method also includes following feature:
Described wireless access network element includes: the base station controller in GERAN network or the radio network controller in UTRAN network.
In order to solve above-mentioned technical problem, present invention also offers the system of a kind of identification circuit domain dropping business, be applied to wireless access network element, this system includes:
Message reception module, for, after knowing that user terminal is redirected to this wireless access network, receiving the non-access layer information that user terminal sends;
Message resolves and judge module, for described non-access layer information is resolved, after determining that described non-access layer information carries circuit domain dropping business CSFB instruction information, it is determined that described user terminal triggers CSFB business.
Further, this system also includes following feature:
Described non-access layer information includes Non-Access Stratum initial direct-sending message.
Further, this system also includes following feature:
Described Non-Access Stratum initial direct-sending message includes: connection management service request information and/or location area updating request message.
Further, this system also includes following feature:
Message resolves and judge module, is used for determining that described non-access layer information carries CSFB and indicates information, including:
Extract connection management service request information or the additional undated parameter cell of location area updating request message, it is determined that it is 1 that the circuit domain dropping of described additional undated parameter cell exhales CSMT parameter or circuit domain dropping to act the value exhaling CSMO parameter eventually.
Further, this system also includes following feature:
Described wireless access network element includes: the base station controller in GERAN network or the radio network controller in UTRAN network.
Compared with prior art, the method and system of a kind of identification circuit domain dropping business provided by the invention, the Radio Access Network side of 2G/3G network accurately identifies circuit domain dropping business by resolving non-access layer information (initial direct-sending message), thus improving the Consumer's Experience of circuit domain dropping business.
Accompanying drawing explanation
Fig. 1 is CSFB business networking schematic diagram in prior art.
Fig. 2 is the flow chart of the method for a kind of identification circuit domain dropping business of the embodiment of the present invention.
Fig. 3 is the system structure schematic diagram of a kind of identification circuit domain dropping business of the embodiment of the present invention.
Fig. 4 is the information interaction figure in application example of the present invention, CSFB business being identified.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with accompanying drawing, embodiments of the invention are described in detail. It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
As in figure 2 it is shown, a kind of method embodiments providing identification circuit domain dropping business, being applied to wireless access network element, the method includes:
S10, after knowing that user terminal is redirected to this wireless access network, receives the non-access layer information that user terminal sends;
S20, resolves described non-access layer information, after determining that described non-access layer information carries circuit domain dropping business CSFB instruction information, it is determined that described user terminal triggers CSFB business.
The method farther includes following feature:
Wherein, described wireless access network includes: GERAN network or UTRAN network.
Wherein, described wireless access network element includes: the base station controller in GERAN network or the radio network controller in UTRAN network;
Wherein, described user terminal is bimodulus or the multimode terminal with LTE and GERAN/UTRAN access capability;
Wherein, described Non-Access Stratum NAS (Non-accessstratum) message includes Non-Access Stratum initial direct-sending message;
Wherein, described Non-Access Stratum initial direct-sending message includes: connection management service request (CMServiceRequest) message and/or location area updating request (LocationUpdatingRequest) message; Non-Access Stratum initial direct-sending message (InitialDirectTransfer) carries user terminal UE and is sent to the Non-Access Stratum information content of core net CN (CoreNetwork).
Wherein it is determined that described non-access layer information carries circuit domain dropping business CSFB indicates information, including:
Extract connection management service request information or additional undated parameter (AdditionalUpdateParameters) cell of location area updating request message, it is determined that it is 1 that the circuit domain dropping of described additional undated parameter cell exhales CSMT (CSfallbackmobileterminatingcall) parameter or circuit domain dropping to act the value exhaling CSMO (CSfallbackmobileoriginatingcall) parameter eventually.
As shown in table 1 below, additional undated parameter has been carried out following definition by 3GPP agreement.
Table 1
As it is shown on figure 3, embodiments provide the system of a kind of identification circuit domain dropping business, being applied to wireless access network element, this system includes:
Message reception module, for, after knowing that user terminal is redirected to this wireless access network, receiving the non-access layer information that user terminal sends;
Message resolves and judge module, for described non-access layer information is resolved, after determining that described non-access layer information carries circuit domain dropping business CSFB instruction information, it is determined that described user terminal triggers CSFB business.
This system farther includes following feature:
Wherein, described wireless access network element includes: the base station controller in GERAN network or the radio network controller in UTRAN network;
Wherein, described non-access layer information includes Non-Access Stratum initial direct-sending message;
Wherein, described Non-Access Stratum initial direct-sending message includes: connection management service request (CMServiceRequest) message or location area updating request (LocationUpdatingRequest) message;
Wherein, message resolves and judge module, is used for determining that described non-access layer information carries circuit domain dropping business CSFB and indicates information, including:
Extract connection management service request information or the additional undated parameter cell of location area updating request message, it is determined that it is 1 that the circuit domain dropping of described additional undated parameter cell exhales CSMT parameter or circuit domain dropping to act the value exhaling CSMO parameter eventually.
Application example
As shown in Figure 4, user terminal is initiated CSFB business in the first Radio Access Network (RAN1) and is redirected in the second Radio Access Network (RAN2), wherein, RAN1 is 4G network, RAN2 is 3G network, whether the radio network controller (RNC) identification user terminal in the second Radio Access Network triggers CSFB business, specifically includes:
The eNodB of 201, UE to first Radio Access Networks (RAN1) sends Non-Access Stratum expansion service request (NASExtendedserviceRequest);
202, the eNodB of the first Radio Access Network returns RRC connection release response message (RRCConnectionRelease) to UE;
203, UE initiate Signaling Radio Bearer to the radio network controller (RNC) in RAN2 sets up request, and the resource of RNC assignment response is to UE;
204, UE initiate Non-Access Stratum connection management service request information (CMServiceRequest), in the additional undated parameter cell of described Non-Access Stratum connection management service request information, the value of CSMO parameter or CSMT parameter are set to 1;
Wherein, UE can also initiate Non-Access Stratum location area updating request message (LocationUpdatingRequest), ask, in the additional undated parameter cell of message, the value of CSMO parameter or CSMT parameter to be set to 1 at described Non-Access Stratum location area updating;
205, radio network controller is while being transmitted to core net CN by described Non-Access Stratum connection management service request information (or the more newly requested message in the Non-Access Stratum band of position), Non-Access Stratum connection management service request information (or the more newly requested message in the Non-Access Stratum band of position) is resolved, CSMO parameter in knowing additional undated parameter cell or the value of CSMT parameter are after 1, it is determined that what UE initiated is CSFB business.
Wherein, RAN2 network identifies CSFB business by NAS message, thus treating with a certain discrimination with common CS business, can improve Consumer's Experience.
The method and system of a kind of identification circuit domain dropping business that above-described embodiment provides, the Radio Access Network side of 2G/3G network accurately identifies CSFB business by resolving non-access layer information (initial direct-sending message), thus improving the Consumer's Experience of circuit domain dropping business.
One of ordinary skill in the art will appreciate that all or part of step in said method can be carried out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, such as read only memory, disk or CD etc. Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuit to realize, and correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes. The present invention is not restricted to the combination of the hardware and software of any particular form.
It should be noted that; the present invention also can have other various embodiments; when without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and deformation according to the present invention, but these change accordingly and deformation all should belong to the scope of the claims appended by the present invention.
Claims (10)
1. a method for identification circuit domain dropping business, is applied to wireless access network element, and the method includes:
After knowing that user terminal is redirected to this wireless access network, receive the non-access layer information that user terminal sends;
Described non-access layer information is resolved, after determining that described non-access layer information carries circuit domain dropping business CSFB instruction information, it is determined that described user terminal triggers CSFB business.
2. the method for claim 1, it is characterised in that:
Described non-access layer information includes Non-Access Stratum initial direct-sending message.
3. method as claimed in claim 2, it is characterised in that:
Described Non-Access Stratum initial direct-sending message includes: connection management service request information and/or location area updating request message.
4. method as claimed in claim 3, it is characterised in that:
Determine that described non-access layer information carries CSFB and indicates information, including:
Extract connection management service request information or the additional undated parameter cell of location area updating request message, it is determined that it is 1 that the circuit domain dropping of described additional undated parameter cell exhales CSMT parameter or circuit domain dropping to act the value exhaling CSMO parameter eventually.
5. the method as according to any one of claim 1-4, it is characterised in that:
Described wireless access network element includes: the base station controller in GERAN network or the radio network controller in UTRAN network.
6. a system for identification circuit domain dropping business, is applied to wireless access network element, and this system includes:
Message reception module, for, after knowing that user terminal is redirected to this wireless access network, receiving the non-access layer information that user terminal sends;
Message resolves and judge module, for described non-access layer information is resolved, after determining that described non-access layer information carries circuit domain dropping business CSFB instruction information, it is determined that described user terminal triggers CSFB business.
7. system as claimed in claim 6, it is characterised in that:
Described non-access layer information includes Non-Access Stratum initial direct-sending message.
8. system as claimed in claim 7, it is characterised in that:
Described Non-Access Stratum initial direct-sending message includes: connection management service request information and/or location area updating request message.
9. system as claimed in claim 7, it is characterised in that:
Message resolves and judge module, is used for determining that described non-access layer information carries CSFB and indicates information, including:
Extract connection management service request information or the additional undated parameter cell of location area updating request message, it is determined that it is 1 that the circuit domain dropping of described additional undated parameter cell exhales CSMT parameter or circuit domain dropping to act the value exhaling CSMO parameter eventually.
10. the system as according to any one of claim 6-9, it is characterised in that:
Described wireless access network element includes: the base station controller in GERAN network or the radio network controller in UTRAN network.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605939.0A CN105636124A (en) | 2014-10-30 | 2014-10-30 | Method and system for recognizing CSFB (circuit switched fallback business) |
| PCT/CN2015/073137 WO2015184865A1 (en) | 2014-10-30 | 2015-02-15 | Method and system for recognizing circuit switched fallback service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605939.0A CN105636124A (en) | 2014-10-30 | 2014-10-30 | Method and system for recognizing CSFB (circuit switched fallback business) |
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| CN105636124A true CN105636124A (en) | 2016-06-01 |
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| CN201410605939.0A Pending CN105636124A (en) | 2014-10-30 | 2014-10-30 | Method and system for recognizing CSFB (circuit switched fallback business) |
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| CN (1) | CN105636124A (en) |
| WO (1) | WO2015184865A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114554561A (en) * | 2022-02-12 | 2022-05-27 | 成都中科微信息技术研究院有限公司 | Method, storage medium and computing device for processing consistency when UE falls back to LTE from NR |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112889342A (en) * | 2018-11-14 | 2021-06-01 | 诺基亚技术有限公司 | Apparatus, method and computer program for connection management |
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| EP3062558B1 (en) * | 2009-06-16 | 2018-10-10 | BlackBerry Limited | Method for accessing a service unavailable through a network cell |
| US20110312321A1 (en) * | 2010-06-22 | 2011-12-22 | Qualcomm Incorporated | System, apparatus, and method for improving circuit switched fallback call setup delay in wireless communication systems |
| CN103108402B (en) * | 2011-11-11 | 2017-02-08 | 中兴通讯股份有限公司 | Voice service implementation method, voice fall back implementation terminal and system thereof |
| CN103987132B (en) * | 2013-02-07 | 2018-06-15 | 华为技术有限公司 | A kind of method for processing business, system and relevant device |
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2014
- 2014-10-30 CN CN201410605939.0A patent/CN105636124A/en active Pending
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2015
- 2015-02-15 WO PCT/CN2015/073137 patent/WO2015184865A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2272278A1 (en) * | 2008-03-21 | 2011-01-12 | Interdigital Patent Holdings, Inc. | Method and apparatus to enable fallback to circuit switched domain from packet switched domain |
| CN103109574A (en) * | 2010-09-14 | 2013-05-15 | 高通股份有限公司 | System and method of improving circuit-switched fallback user experience |
| CN103797850A (en) * | 2011-09-21 | 2014-05-14 | 高通股份有限公司 | Methods and apparatus for improving a call fallback user experience |
| WO2013087318A1 (en) * | 2011-12-16 | 2013-06-20 | Telefonaktiebolaget L M Ericsson (Publ) | Circuit switched fallback proxy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114554561A (en) * | 2022-02-12 | 2022-05-27 | 成都中科微信息技术研究院有限公司 | Method, storage medium and computing device for processing consistency when UE falls back to LTE from NR |
| CN114554561B (en) * | 2022-02-12 | 2024-01-23 | 成都中科微信息技术研究院有限公司 | Method, storage medium and computing device for processing consistency when UE falls back from NR to LTE |
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| WO2015184865A1 (en) | 2015-12-10 |
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