CN101854600B - Method, device and system for circuit domain dropping - Google Patents
Method, device and system for circuit domain dropping Download PDFInfo
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- CN101854600B CN101854600B CN 200910133332 CN200910133332A CN101854600B CN 101854600 B CN101854600 B CN 101854600B CN 200910133332 CN200910133332 CN 200910133332 CN 200910133332 A CN200910133332 A CN 200910133332A CN 101854600 B CN101854600 B CN 101854600B
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Abstract
The embodiment of the invention discloses a method, a device and a system for circuit domain dropping. The method comprises the following steps: receiving an S102 direct transmission message sent by an interoperating solution functional entity 1xCS IWS of the circuit domain dropping, wherein the S102 direct transmission message comprises a single-carrier radio transmission technology 1xRTT message; determining whether the 1xRTT message is a paging request message or not; when the 1xRTT message is a paging request message, notifying the terminal to drop to the circuit domain indicated by a core network domain indicator in an LTE paging request message through a terminal identification paging terminal in the LTE paging request message. The embodiment of the invention can reduce the speech business terminating time delay and the complexity of the CSFB process within the 3GPP2 CDMA system.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of methods, devices and systems of circuit domain dropping.
Background technology
Current era, LTE(Long Term Evolution, Long Term Evolution) is the evolution of 3GPP, it improves and has strengthened the aerial access technology of 3GPP, adopt OFDM(Orthogonal FrequencyDivision Multiplexing, OFDM) and MIMO(Multiple-InputMultiple-Out-put, multiple-input and multiple-output) as the standard of its wireless network evolution, improved the performance of Cell Edge User, improved cell capacity and reduced system delay.
3GPP2CDMA(Code Division Multiple Access, code division multiple access) operator also to begin to adopt LTE be the wireless network of its evolution of future generation.After disposing the LTE network, speech business provide dual mode, a kind of mode is VoIP(Voice overInternet Protocol), be that speech business is carried by the LTE network, use QoS(Quality ofService, service quality) technology guarantees the QoS of speech business, and this mode need be disposed IMS(IP Multimedia Subsystem, IP multimedia subsystem, IMS); Another kind of mode is CSFB(CS FallBack, circuit domain dropping), namely terminal resides in the LTE network, when needs are initiated or receive speech business, turns back to the 2G/3G network, and the circuit domain by the 2G/3G network provides speech business.
Yet, in the prior art, when speech business is exhaled eventually and then carried out 1xRTT(Single CarrierRadio Transmission Technology, the single carrier Radio Transmission Technology) during CSFB, if terminal is in Idle state in the LTE network, MME(Mobility Management Entity then, Mobility Management Entity) after receiving the 1xRTT paging request message, MME need transmit 1xRTT CS beep-page message by descending S1cdma2000 tunnel message and give E-UTRAN(Evolved UTRAN, UMTS Terrestrial radio access network of future generation), transmit the 1xRTTCS beep-page message by downlink information pass-along message again by E-UTRAN and give terminal, therefore, MME can carry out the service request that network is initiated earlier, make terminal enter the LTE activated state from the LTE Idle state, transmit the 1xRTT beep-page message by the LTE tunnel and give terminal, sent by terminal and activate business request message to MME, notice LTE network carries out the processing of CSFB.But, when MME carries out the service request of network initiation and terminal is entered from Idle state the activated state process, can cause exhale time delay to strengthen the end of whole speech business.
Summary of the invention
The embodiment of the invention provides a kind of methods, devices and systems of circuit domain dropping, and to reduce under the 3GPP2CDMA system, time delay is exhaled in speech business eventually.
The embodiment of the invention discloses a kind of method of circuit domain dropping, comprise: the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends includes single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102; Judge whether described 1xRTT message is paging request message; When described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
The embodiment of the invention also discloses a kind of Mobility Management Entity MME, comprise: receiving element, be used for the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends, include single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102; Judging unit is used for judging whether described 1xRTT message is paging request message; Paging unit when described 1xRTT message is paging request message, is utilized the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notifies described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
The embodiment of the invention also discloses a kind of circuit domain dropping interoperability solution functional entity 1xCSIWS, comprising: receiving element is used for receiving the 1xRTT message that 1xRTT MSC sends; The unit is set, is used in the direct pass-along message of S102 the paging sign being set, described paging sign is used for whether the described 1xRTT message of sign is paging request message; Transmitting element sends to Mobility Management Entity MME for the direct pass-along message of S102 that will include described paging sign and described 1xRTT message.
The embodiment of the invention also discloses a kind of system of circuit domain dropping, described system comprises: terminal, MME and 1xCS IWS, wherein,
Described terminal is used for, and after the LTE paging request message that receives the E-UTRAN transmission, falls back to the indicated circuit domain of core network domain designator in the described LTE paging request message; Described MME is used for, receive the direct pass-along message of S102 that described 1xCS IWS sends, include single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102, judge whether described 1xRTT message is paging request message, when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message; Described 1xCS IWS is used for, receive the 1xRTT message that 1xRTT MSC sends, in the direct pass-along message of S102, the paging sign is set, the direct pass-along message of S102 that will include described paging sign and described 1xRTT message sends to described MME, and described paging sign is used for whether the described 1xRTT message of sign is paging request message.
As can be seen from the above-described embodiment, when speech business is exhaled eventually and then is carried out 1xRTT CSFB, if terminal is in the LTE Idle state, utilization carries the LTE paging request message call terminal of terminal iidentification and core network domain designator, can avoid earlier terminal transfer being arrived activated state, carry out the processing of CSFB again, thereby exhale time delay the end of having reduced whole speech business.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of the method for a kind of circuit domain dropping of the present invention;
Fig. 2 is the signaling process figure of another embodiment of the method for a kind of circuit domain dropping of the present invention;
Fig. 3 is the structure chart of an embodiment of the device of a kind of circuit domain dropping of the present invention;
Fig. 4 is the structure chart of another embodiment of the device of a kind of circuit domain dropping of the present invention;
Fig. 5 is the structure chart of an embodiment of the system of a kind of circuit domain dropping of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment one
See also Fig. 1, it is the flow chart of an embodiment of a kind of circuit domain dropping of the present invention, and this method may further comprise the steps:
Step 101: the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends includes single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102;
Step 102: judge whether described 1xRTT message is paging request message;
Wherein, the type of described judgement 1xRTT message comprises: read described paging sign from the direct pass-along message of described S102; Whether be paging request message according to the described 1xRTT message of described paging landmark identification.
Step 103: when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
Wherein, the described Long Term Evolution LTE paging request message call terminal that utilizes comprises: the core network domain designator in the described LTE paging request message is set to 1xCS; Described LTE paging request message is sent to terminal by UMTS Terrestrial radio access network E-UTRAN of future generation, and the notice terminal falls back to the 1xCS territory of described core network domain designator indication from LTE.
By above-described embodiment as can be seen, when speech business is exhaled eventually and then is carried out 1xRTT CSFB, if terminal is in the LTE Idle state, utilization carries the LTE paging request message call terminal of terminal iidentification and core network domain designator, can avoid earlier terminal transfer being arrived activated state, carry out the processing of CSFB again, thereby exhale time delay the end of having reduced whole speech business.Simultaneously, also simplify the processing procedure of whole C SFB processing procedure, reduced complexity.
Embodiment two
See also Fig. 2, it is the signaling process figure of another embodiment of the method for a kind of circuit domain dropping of the present invention, specifically may further comprise the steps:
Step 201: terminal UE is finished E-UTRAN and is adhered to the 1xRTT circuit domain and register;
Step 202: when the speech business of carrying out UE was exhaled eventually, 1xRTT MSC sent 1xRTT message to 1xCS IWS;
Wherein, in the present embodiment, be that speech business is exhaled eventually owing to what carry out, therefore, the 1xRTT message of this moment is paging request message, namely 1xRTT MSC sends the 1xRTT paging request message to 1xCS IWS.
Step 203: after 1xCS IWS receives 1xRTT message, transmit 1xRTT message by the direct pass-along message of S102 and give MME;
Wherein, 1xCS IWS passes to MME with 1xRTT message as an information unit of the direct pass-along message of S102, and a paging sign is set in the direct pass-along message of S102 identifies whether the 1xRTT message of carrying in the direct pass-along message of S102 is paging request message.
For example, can comprise 1xRTT message in the 1x LAC Encapsulated PDU information unit in the direct pass-along message of S102, and in the A21 1x MessageTransmission Control information unit in the direct pass-along message of S102 described paging sign is set, when described 1xRTT message is the 1xRTT paging request message, described paging sign is set to 1, otherwise described paging sign is set to 0.
Step 204: when the paging in the direct pass-along message of S102 is masked as 1 and UE when being in the LTE Idle state, MME sends the LTE paging request message to E-UTRAN;
Wherein, carry terminal iidentification and core network domain designator in the described LTE paging request message, E-UTRAN can call terminal according to described terminal iidentification, the core network domain designator is used for the reason of sign call terminal, if the paging of the direct pass-along message of S102 be masked as 1 and UE be in the LTE Idle state, the core network domain designator that MME arranges the LTE beep-page message is " 1xCS ", namely because circuit domain dropping needs call terminal, handles so that terminal is carried out corresponding circuit domain dropping.
Step 205:E-UTRAN is transmitted to UE with described LTE paging request message, and described LTE paging request message comprises UE sign and core network domain designator, and the core network domain designator is set to " 1xCS ";
Step 206:UE sends and activates business request message to MME, carries circuit domain dropping CS Fallback indication in the described request message of activating business;
Wherein, UE activates business request message to MME by transmission, and request MME carries out the falling of circuit domain to be handled.
After step 207:MME receives the request message of activating business of UE transmission, send the S1 initial context and set up request message to E-UTRAN, described S1 initial context is set up and is carried the CSFallback indication in the request message;
Wherein, MME send the S1 initial context set up request message to E-UTRAN after, carried out the falling of circuit domain by E-UTRAN and handle.
Step 208:E-UTRAN determines to carry out the target 1xRTT residential quarter of CS Fallback;
Wherein, when E-UTRAN receives after S1 initial context that MME sends sets up request message, to UE request measurement report, behind the UE reporting measurement reports, E-UTRAN seeks the target 1xRTT residential quarter that the executive circuit domain dropping is determined in the stronger residential quarter of signal in described measurement report.
In addition, also can measure and seek the stronger residential quarter of signal voluntarily as the target 1xRTT residential quarter of executive circuit domain dropping by terminal, then this step just can be omitted.
Step 209:E-UTRAN triggers the RRC connection release that band is redirected to 1xCS;
Wherein, the above-mentioned request message of activating business must connect transmit by RRC, but by RRC connect transmitted the described request message of activating business after, and before falling back to circuit domain, need to discharge RRC and connect.
When the stronger residential quarter of signal carry out to be measured and sought to terminal as the target 1xRTT residential quarter of executive circuit domain dropping, E-UTRAN only initiated RRC and connects and discharge.
Step 210:E-UTRAN sends S1 UE context and discharges request message to MME;
Wherein, after E-UTRAN has determined to want the Target cell of executive circuit domain dropping and discharged RRC to connect, need to discharge E-UTRAN and go up the S1 UE context of setting up.Described S1 UE context discharges request message indication S1 UE context release cause for need carry out the falling of circuit domain.
It is halted state that step 211:MME arranges S1 UE context, sends to suspend request message to gateway Serving GW, and request suspends all EPS carryings of described UE;
Wherein, when MME receives after the S1 UE context of initiating owing to the falling that will carry out circuit domain discharges request message, because present commercial 1xRTT system does not support to carry out simultaneously speech business and data service, therefore, for can receiving circuit territory business, as carry out voice call, need to suspend the EPS carrying.
Step 212: gateway Serving GW sends and suspends the request acknowledge message to MME;
Wherein, mark UE is halted state in described time-out request acknowledge message.
Step 213:MME notice E-UTRAN carries out S1 UE context and discharges;
Wherein, after MME determines that Serving GW has suspended all EPS carryings of described UE, carry out S1UE context dispose procedure.
Step 214:UE be tuned on the target 1xRTT residential quarter determined of E-UTRAN, send the 1xRTT page-response message at the 1xRTT access channel;
Wherein, when measuring and seeking the stronger residential quarter of signal as the target 1xRTT residential quarter of executive circuit domain dropping voluntarily by terminal, in this step UE be tuned to the target 1xRTT residential quarter determined voluntarily.
The BSC of step 215:1xRTT sets up the dedicated channel that 1xRTT exhales eventually, and the circuit domain dropping processing procedure of speech business finishes.
By above-described embodiment as can be seen, when speech business is exhaled eventually and then is carried out 1xRTT CSFB, if terminal is in the LTE Idle state, utilization carries the LTE paging request message call terminal of terminal iidentification and core network domain designator, can avoid earlier terminal transfer being arrived activated state, carry out the processing of CSFB again, thereby exhale time delay the end of having reduced whole speech business.Simultaneously, also simplify the processing procedure of whole C SFB processing procedure, reduced complexity.
Embodiment three
Corresponding with the method for above-mentioned a kind of circuit domain dropping, the embodiment of the invention also provides a kind of device of circuit domain dropping.See also Fig. 3, it is the structure chart of an embodiment of the method for a kind of circuit domain dropping of the present invention, and this device comprises: receiving element 301, judging unit 302 and paging unit 303.Operation principle below in conjunction with this device is further introduced its internal structure and annexation.
Receiving element 301 is used for the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends, and includes single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102;
Judging unit 302 is used for judging whether described 1xRTT message is paging request message;
Paging unit 303, be used for when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
Wherein, judging unit 302 comprises: reading unit 3021 and recognition unit 3022,
Reading unit 3021 is used for reading described paging sign from the direct pass-along message of described S102;
Whether recognition unit 3022, being used for according to the described 1xRTT message of described paging sign identification is paging request message.
Paging unit 303 comprises: unit 3031 and transmitting element 3032 are set,
Unit 3031 is set, and the core network domain designator that is used for described LTE paging request message is set to 1xCS;
Transmitting element 3032 is used for described LTE paging request message is sent to terminal by UMTS Terrestrial radio access network E-UTRAN of future generation, and the notice terminal falls back to the 1xCS territory of described core network domain designator indication from LTE.
In above-described embodiment, realize that the device of circuit domain dropping can be MME.
Embodiment three
The embodiment of the invention also provides a kind of device of circuit domain dropping.See also Fig. 4, it is the structure chart of another embodiment of the device of a kind of circuit domain dropping of the present invention.Described device comprises: receiving element 401, unit 402 and transmitting element 403 are set, wherein,
Receiving element 401 is used for receiving the 1xRTT message that 1xRTT MSC sends;
Transmitting element 403 sends to Mobility Management Entity MME for the direct pass-along message of S102 that will include described paging sign and described 1xRTT message.
In above-described embodiment, realize that the device of circuit domain dropping can be 1xCS IWS.
Embodiment four
The embodiment of the invention also provides a kind of system of circuit domain dropping, sees also Fig. 5, and it is an embodiment of the system of a kind of circuit domain dropping of the present invention, and described system comprises: terminal 501, MME502 and 1xCS IWS503, wherein,
Terminal 501 is used for, and after the LTE paging request message that receives the E-UTRAN transmission, falls back to the indicated circuit domain of core network domain designator in the described LTE paging request message;
MME502 is used for, receive the S 102 direct pass-along messages that described 1xCS IWS sends, include single carrier Radio Transmission Technology 1xRTT message in the described S 102 direct pass-along messages, judge whether described 1xRTT message is paging request message, when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message;
1xCS IWS503 is used for, receive the 1xRTT message that 1xRTT MSC sends, in the direct pass-along message of S102, the paging sign is set, the direct pass-along message of S102 that will include described paging sign and described 1xRTT message sends to described MME, and described paging sign is used for whether the described 1xRTT message of sign is paging request message.
Wherein, MME502 comprises: MME receiving element 5021, judging unit 5022 and paging unit 5023,
MME receiving element 5021 is used for the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends, and carries single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102;
Judging unit 5022 is used for judging whether described 1xRTT message is paging request message;
Paging unit 5023, be used for when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
1xCS IWS503 comprises: 1xCS IWS receives unit 5031, unit 5032 and transmitting element 5033 is set,
1xCS IWS receiving element 5031 is used for receiving the 1xRTT message that 1xRTT MSC sends;
Unit 5032 is set, is used in the direct pass-along message of S102 the paging sign being set, described paging sign is used for whether the described 1xRTT message of sign is paging request message;
Transmitting element 5033 sends to Mobility Management Entity MME for the direct pass-along message of S102 that will include described paging sign and described 1xRTT message.
By above-described embodiment as can be seen, when speech business is exhaled eventually and then is carried out 1xRTT CSFB, if terminal is in the LTE Idle state, utilization carries the LTE paging request message call terminal of terminal iidentification and core network domain designator, can avoid earlier terminal transfer being arrived activated state, carry out the processing of CSFB again, thereby exhale time delay the end of having reduced whole speech business.Simultaneously, also simplify the processing procedure of whole C SFB processing procedure, reduced complexity.
Need to prove, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random AccessMemory, RAM) etc.
More than the methods, devices and systems of a kind of circuit domain dropping provided by the present invention are described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the method for a circuit domain dropping is characterized in that, comprising:
The direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends includes single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102;
Judge whether described 1xRTT message is paging request message;
When described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
2. method according to claim 1 is characterized in that, judges that whether described 1xRTT message is paging request message, comprising:
From the direct pass-along message of described S102, read the paging sign;
Whether be paging request message according to the described 1xRTT message of described paging landmark identification.
3. method according to claim 1, it is characterized in that, when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message, comprising:
Core network domain designator in the described LTE paging request message is set to 1xCS;
Described LTE paging request message is sent to terminal by UMTS Terrestrial radio access network E-UTRAN of future generation, and the notice terminal falls back to the 1xCS territory of described core network domain designator indication from LTE.
4. a Mobility Management Entity MME is characterized in that, comprising:
Receiving element is used for the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends, and includes single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102;
Judging unit is used for judging whether described 1xRTT message is paging request message;
Paging unit when described 1xRTT message is paging request message, is utilized the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notifies described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message.
5. MME according to claim 4 is characterized in that, described judging unit comprises:
Reading unit is used for reading the paging sign from the direct pass-along message of described S102;
Whether recognition unit, being used for according to the described 1xRTT message of described paging landmark identification is paging request message.
6. MME according to claim 4 is characterized in that, described paging unit comprises:
The unit is set, and the core network domain designator that is used for described LTE paging request message is set to 1xCS;
Transmitting element sends to terminal with described LTE paging request message by UMTS Terrestrial radio access network E-UTRAN of future generation, and the notice terminal falls back to the 1xCS territory of described core network domain designator indication from LTE.
7. a circuit domain dropping interoperability solution functional entity 1xCS IWS is characterized in that, comprising:
Receiving element is used for receiving the 1xRTT message that single carrier Radio Transmission Technology 1xRTT MSC sends;
The unit is set, is used in the direct pass-along message of S102 the paging sign being set, described paging sign is used for whether the described 1xRTT message of sign is paging request message;
Transmitting element sends to Mobility Management Entity MME for the direct pass-along message of S102 that will include described paging sign and described 1xRTT message.
8. the system of a circuit domain dropping is characterized in that, described system comprises: terminal, Mobility Management Entity MME and circuit domain dropping interoperability solution functional entity 1xCS IWS, wherein,
Described terminal is used for, and after the LTE paging request message that receives UMTS Terrestrial radio access network E-UTRAN transmission of future generation, falls back to the indicated circuit domain of core network domain designator in the described LTE paging request message;
Described MME is used for, receive the direct pass-along message of S102 that described 1xCS IWS sends, include single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102, judge whether described 1xRTT message is paging request message, when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message;
Described 1xCS IWS is used for, receive the 1xRTT message that 1xRTT MSC sends, in the direct pass-along message of S102, the paging sign is set, the direct pass-along message of S102 that will include described paging sign and described 1xRTT message sends to described MME, and described paging sign is used for whether the described 1xRTT message of sign is paging request message;
Described MME comprises:
The MME receiving element is used for the direct pass-along message of S102 that receiving circuit domain dropping interoperability solution functional entity 1xCS IWS sends, and carries single carrier Radio Transmission Technology 1xRTT message in the direct pass-along message of described S102;
Judging unit is used for judging whether described 1xRTT message is paging request message;
Paging unit, be used for when described 1xRTT message is paging request message, utilize the terminal iidentification call terminal in the Long Term Evolution LTE paging request message, notify described terminal to fall back to the indicated circuit domain of core network domain designator in the LTE paging request message;
Described 1xCS IWS comprises:
1xCS IWS receiving element is used for receiving the 1xRTT message that 1xRTT MSC sends;
The unit is set, is used in the direct pass-along message of S102 the paging sign being set, described paging sign is used for whether the described 1xRTT message of sign is paging request message;
Transmitting element sends to Mobility Management Entity MME for the direct pass-along message of S102 that will include described paging sign and described 1xRTT message.
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| CN 200910133332 CN101854600B (en) | 2009-04-02 | 2009-04-02 | Method, device and system for circuit domain dropping |
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| 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 |
| CN103313426B (en) * | 2012-03-16 | 2016-08-10 | 华为技术有限公司 | The instruction of signaling connection establishment reason and recognition methods and device |
| WO2013181805A1 (en) | 2012-06-06 | 2013-12-12 | 华为技术有限公司 | Method for returning to long term evolution network, mobile switching centre and system |
| CN103546931A (en) * | 2012-07-13 | 2014-01-29 | 中兴通讯股份有限公司 | Method and device for realizing circuit switched fallback |
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