WO2019061490A1 - Procédé et appareil de détection de terminal reposant sur un csfb, et support de stockage informatique - Google Patents

Procédé et appareil de détection de terminal reposant sur un csfb, et support de stockage informatique Download PDF

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Publication number
WO2019061490A1
WO2019061490A1 PCT/CN2017/104989 CN2017104989W WO2019061490A1 WO 2019061490 A1 WO2019061490 A1 WO 2019061490A1 CN 2017104989 W CN2017104989 W CN 2017104989W WO 2019061490 A1 WO2019061490 A1 WO 2019061490A1
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Prior art keywords
terminal
csfb
lte network
lte
failure
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PCT/CN2017/104989
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English (en)
Chinese (zh)
Inventor
曾元清
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深圳市云中飞网络科技有限公司
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Priority to CN201780001905.2A priority Critical patent/CN108124512B/zh
Priority to PCT/CN2017/104989 priority patent/WO2019061490A1/fr
Publication of WO2019061490A1 publication Critical patent/WO2019061490A1/fr

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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]
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks

Definitions

  • the present invention relates to the field of CSFB (Circuit Switched Fallback), and in particular, to a CSFB-based terminal detection method and apparatus, and a computer storage medium.
  • CSFB Circuit Switched Fallback
  • LTE Long-term evolution
  • 2G/3G dual-mode terminals are wireless-signal-mode
  • a dual-mode or multi-mode terminal with LTE and 2G/3G access capabilities When using LTE access, 2G/3G circuit domain service signals cannot be transmitted.
  • a CS Circuit Switched
  • PS Packet Switch
  • the originator of the telephone is called the caller (MO, Mobile Origination)
  • the receiver of the call is called the called (MT, Mobile Termination)
  • the MO and the MT each have their own CSFB signaling flow.
  • the MT in the CSFB process the occurrence of various abnormal conditions will probabilistically cause the CSFB process to fail, which may result in the call being unable to be connected. How to effectively detect the CSFB fallback result in an abnormal scenario is particularly necessary.
  • an embodiment of the present invention provides a CSFB-based terminal detection method and apparatus, and a computer storage medium.
  • the embodiment of the invention provides a CSFB-based terminal detection method, including:
  • the LTE network device After performing the CSFB failure based on the indication information indicating the terminal, detecting whether the terminal is The LTE network device sends a connection establishment request, and obtains a detection result; the indication information is used to indicate that the terminal adopts a preset optimization scheme that is returned by the CSFB to the LTE network;
  • the CSFB failure is generated by the terminal based on a global mobile communication system (GSM, Global System for Mobile Communication) cell access failure; the access failed GSM cell includes a designated GSM cell and a corresponding neighboring cell; The frequency point information of the GSM cell is carried in a redirect command sent by the LTE base station;
  • GSM Global System for Mobile Communication
  • the CSFB is triggered when the terminal receives the paging message sent by the LTE base station.
  • the determining, by using the detection result, whether the terminal successfully returns to the LTE network includes:
  • RRC radio resource control
  • the determining, by using the detection result, whether the terminal successfully returns to the LTE network includes:
  • the terminal After the terminal establishes an RRC connection with the LTE base station, when it is detected that the terminal does not send a location update request to the core network, it is determined that the return result of returning to the LTE network is a return failure.
  • the determining, by using the detection result, whether the terminal successfully returns to the LTE network includes:
  • the terminal After the terminal establishes an RRC connection with the LTE base station, when it is detected that the terminal sends a location update request to the core network, and completes the location update process, it is determined that the return result returned to the LTE network is a return success.
  • the detecting whether the terminal sends a connection establishment request to an LTE network device includes:
  • a timer is set to detect whether the terminal sends a connection establishment request to the LTE network device before the timer expires.
  • the detecting whether the terminal sends a connection establishment request to an LTE network device includes:
  • the embodiment of the invention further provides a terminal detection device based on CSFB, comprising:
  • a detecting unit configured to: after detecting a failure of the CSFB based on the indication information of the indication terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result; the indication information is used to indicate that the terminal adopts a preset CSFB returns an optimized solution for the LTE network;
  • a determining unit configured to determine, by using the detection result, whether the terminal successfully returns to the LTE network
  • the CSFB failure is generated by the terminal based on the GSM cell access failure; the GSM cell with the access failure includes the designated GSM cell and the corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in the LTE base station. Redirect command
  • the CSFB is triggered when the terminal receives the paging message sent by the LTE base station.
  • the determining unit is configured to:
  • the terminal When it is detected that the terminal does not send an RRC connection setup request to the LTE base station, it is determined that the return result of returning to the LTE network is a return failure.
  • the determining unit is configured to:
  • the terminal After the terminal establishes an RRC connection with the LTE base station, when it is detected that the terminal does not send a location update request to the core network, it is determined that the return result of returning to the LTE network is a return failure.
  • the detecting unit is configured to:
  • the device sends a connection establishment request.
  • the detecting unit is configured to:
  • the embodiment of the present invention further provides a CSFB-based terminal detecting apparatus, the apparatus comprising: a processor and a memory configured to store a computer program executable on the processor,
  • processor is configured to perform the steps of any of the above methods when the computer program is run.
  • Embodiments of the present invention also provide a computer storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of any of the above methods.
  • the technical solution provided by the embodiment of the present invention after detecting the failure of the CSFB based on the indication information of the indication terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result; the indication information is used to indicate that the terminal adopts The preset optimization scheme of the LTE network is returned by the CSFB; the detection result is used to determine whether the terminal successfully returns to the LTE network; wherein the CSFB failure is generated by the terminal based on the GSM cell access failure; the access failed GSM
  • the cell includes a designated GSM cell and a corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in a redirection command sent by the LTE base station; and the CSFB is that the terminal receives the paging sent by the LTE base station
  • the solution provided by the embodiment of the present invention can detect the result of the message connection establishment request after the failure of the CSFB in the scenario where the GSM network is not served in the CSFB process,
  • FIG. 1 is a schematic flowchart of a method for detecting a terminal based on CSFB according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for detecting a terminal based on CSFB according to an application embodiment of the present invention
  • FIG. 3 is a schematic diagram 1 of an emulation code according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram 2 of a simulation code according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a CSFB-based terminal detecting apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing the hardware structure of a CSFB-based terminal detecting apparatus according to an embodiment of the present invention.
  • the CSFB-enabled terminal can search for the LTE network, complete the LTE/2G network joint registration, and be able to voice call and call.
  • the CSFB process consists of three phases: 1) the UE initiates a call (corresponding to MO) on the LTE network, or receives a page (corresponding to the MT); 2) the UE falls back under the guidance of the LTE network and searches for a suitable GSM cell/WCDMA cell. Access; 3) The UE reads the GSM cell/WCDMA cell system broadcast message and establishes a voice call.
  • the configuration of the original network deployed on the base station signaling side is not updated in real time, and the configuration that the network sends to the UE occurs.
  • the information is inconsistent with the actual deployment, which leads to various abnormalities in the inter-system (InterRAT) voice call of CSFB, such as failure to connect, repeated connection failure, and the like.
  • InterRAT inter-system
  • the CSFB fallback scheme uses the 3GPP R8 redirection fallback scheme.
  • the problem of no GSM network service will probabilistically cause an abnormality in the CSFB process.
  • the embodiment of the present invention provides a method for detecting a CSFB fallback result in a scenario where the GSM network service does not cause the terminal to execute CSFB.
  • the indication information is used to indicate the terminal Using a preset optimization scheme for returning the LTE network by the CSFB; using the detection result, determining whether the terminal successfully returns to the LTE network; wherein the CSFB failure is generated by the terminal based on the GSM cell access failure; the access failure
  • the GSM cell includes a designated GSM cell and a corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in a redirection command sent by the LTE base station; the CSFB is that the terminal receives the homing sent by the LTE base station Triggered when the message is called.
  • the result of the message connection establishment request after the CSFB failure is detected in the scenario where the GSM network is not served in the CSFB process, thereby finally determining the return result of returning to the LTE network, so that the subsequent CSFB falls back.
  • the optimization scheme can be further improved to improve the probability of returning to the LTE network to improve the user's calling experience.
  • FIG. 1 is a schematic flowchart of a CSFB-based terminal detection method according to an embodiment of the present invention. As shown in FIG. 1 , a CSFB-based terminal detection method includes the following steps:
  • Step 101 After performing the CSFB failure based on the indication information indicating the terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result;
  • the indication information is used to indicate that the terminal adopts a preset optimization scheme that is returned by the CSFB to the LTE network.
  • the CSFB failure is generated by the terminal based on the GSM cell access failure; the GSM cell with the access failure includes the designated GSM cell and the corresponding neighboring cell.
  • the frequency point information of the designated GSM cell carries a redirect command sent by the LTE base station
  • the CSFB is triggered when the terminal receives the paging message sent by the LTE base station.
  • a network environment applied to the embodiment of the present invention may be constructed by means of a laboratory simulation. That is, the scenario in which the terminal is located in the embodiment of the present invention is obtained through simulation, and the processing is performed on the one hand. The staff does not need to go to the site for testing, so that the personnel cost can be reduced. On the other hand, the scene in the scene may also contain other factors, thereby affecting the detection result. Therefore, the simulation network of the embodiment of the present invention can stably reproduce the scene.
  • the CSFB anomaly scenario that occurs in the network can eliminate the influence of other factors on the detection result in the scenario described in the embodiment of the present invention.
  • detecting whether the terminal located in the simulated network environment sends a connection establishment request to the LTE network device detecting whether the terminal located in the simulated network environment sends a connection establishment request to the LTE network device.
  • a timer may be set to detect whether the terminal sends a connection establishment request to the LTE network device before the timer expires.
  • the role of the timer is to prevent the detection time from being too long.
  • Step 102 Determine, by using the detection result, whether the terminal successfully returns to the LTE network.
  • the terminal when it is detected that the terminal does not send an RRC connection setup request to the LTE base station, it is determined that the return result of returning to the LTE network is a return failure.
  • the terminal When the terminal detects that the terminal sends an RRC connection setup request to the LTE base station, the terminal completes the RRC connection establishment. After the terminal establishes an RRC connection with the LTE, when it is detected that the terminal does not send a location update request to the core network, it is determined that the return result of returning to the LTE network is a return failure.
  • the terminal sends a location update request to the core network, and completes the location update process, it is determined that the return result of returning to the LTE network is a return success.
  • the location update request may be in the form of a tracking area update request message.
  • the method provided by the embodiment of the present invention after detecting the failure of the CSFB based on the indication information of the indication terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result; the indication information is used to indicate that the terminal uses the pre- The optimization scheme of the LTE network is returned by the CSFB; the detection result is used to determine whether the terminal successfully returns to the LTE network; wherein the CSFB failure is generated by the terminal based on the GSM cell access failure; the GSM cell with the failed access Include a specified GSM cell and a corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in a redirection command sent by the LTE base station; and the CSFB is that the terminal receives the paging message sent by the LTE base station When the triggering is performed, the solution provided by the embodiment of the present invention can detect the result of the message connection establishment request after the CSFB failure in the scenario where the GSM network is not served in the CSFB process,
  • the simulation method does not require a staff to go to the site, and other factors affecting the detection can be removed, thereby greatly reducing personnel costs.
  • the influence of other factors on the detection result in the scenario described in the embodiment of the present invention can be eliminated.
  • a network environment is constructed by using a simulation platform, including: a time division duplex (TDD)-LTE cell, a TDSCDMA cell, and a GSM cell; wherein two neighbor cell information, ie, GSM 0 and LTE, are configured in the LTE SIB.
  • GSM 1 information, LTE neighbor cell information is configured in GSM SI.
  • the abnormal scenario of the application embodiment is: the GSM 0 cell specified by the network side has no service, and the neighboring cell GSM1 cell weak signal, thereby verifying the validity and rationality of the optimization scheme of the UE side after the CSFB failure.
  • the application embodiment is based on the CSFB terminal detection method, as shown in FIG. 2, and includes the following steps. Step:
  • Step 200 The UE registers on the LTE cell to perform an attach procedure.
  • the UE is an MT, and after the UE is powered on, the Evolved Packet System (EPS)/International Mobile Subscriber Identification Number (IMSI) attach procedure is first executed.
  • EPS Evolved Packet System
  • IMSI International Mobile Subscriber Identification Number
  • the method includes: triggering the UE to send an attach request message (Attach Request) to the LTE base station, and receiving an attach accept message sent by the LTE base station, where the attach accept message is carried to indicate the terminal
  • the CSFB is used to indicate the voice service.
  • the indication information further indicates that the terminal adopts a preset optimization scheme that is returned by the CSFB to the LTE network.
  • Step 201 The network side triggers the MT CSFB process, and the network side sends a paging message (Paging) to the UE to start the CSFB process.
  • Paging paging message
  • the MO needs to initiate a call for the MT first, and then the MT receives the paging message sent by the network side.
  • the mobile services switching center (MSC) in the network sends the SGsAP-PAGING-REQUEST message according to the existing SGs association and Mobility Management Entity (MME) information.
  • MME Mobility Management Entity
  • the SGsAP-PAGING-REQUEST message carries the following information: IMSI, Temporary Mobile Subscriber Identity (TMSI), Service Indicator, Calling Number, and Location Area Information.
  • the MME After receiving the message, the MME sends a paging message to the base station, and the base station initiates an air interface Paging process.
  • the UE establishes a connection and sends an Extended Service Request message to the MME.
  • the MME sends an SGsAP-SERVICE-REQUEST message to the MSC.
  • the MSC receives the message and does not resend the paging request message to the MME. In order to avoid the call connection process, the caller waits for too long. Long, the MSC receives the SGs Service Request message containing the idle state indication, first notifying that the calling call is in the process of being connected.
  • the MME sends an Initial UE Context Setup message to the base station.
  • the Initial UE Context Setup message carries a CS Fallback Indicator
  • the CS Fallback Indicator is used to indicate that the base station UE needs to fall back to the UMTS Terrestrial Radio Access Network due to the CSFB service requirement (UTRAN, UMTS Terrestrial Radio Access Network).
  • UTRAN UMTS Terrestrial Radio Access Network
  • GERAN GSM EDGE Radio Access Network
  • the UE receives the LTE_RRCConnectionRelease signaling sent by the LTE base station, that is, the redirect command.
  • the redirection command carries the frequency information of the specified GSM cell (assumed to be GSM0).
  • the base station sends an R8 redirection command (rrcConnectionRelease_R8(0)) to the UE, where the command carries the target GSM cell, that is, the GSM0 frequency point information, but the GSM 0 has no service, and the GSM 1 cell signal does not satisfy the access.
  • the requirement, that is, the signal strength is below the access threshold, this abnormal scenario causes the terminal to fail to execute CSFB.
  • Step 202 The GSM 0 cell signal is turned off by the simulation platform to simulate that the designated cell has no service; and the signal strength of the GSM 1 cell is lowered below the access threshold to simulate that the neighboring cell is unavailable, thereby simulating the CSFB process fallback failure scenario. At this time, the UE fails to execute CSFB;
  • Step 203 Detecting whether the UE initiates an RRCConnectionRequest message within a specified timer duration on the LTE network side. If yes, step 204 is performed. Otherwise, the LTE network returns failure, that is, the preset optimization scheme fails.
  • Step 204 After the RRC connection is established, the UE detects whether the UE sends a TrackingAreaUpdateRequest message to the core network. If yes, the process is completed, indicating that the LTE network returns successfully, and the preset optimization scheme is successful; otherwise, the LTE network returns failure, and the preset The optimization solution failed.
  • the UE should return to the LTE network according to the optimization scheme that the UE quickly returns to the LTE network after the failure of the preset CSFB.
  • the UE fails to perform CSFB the UE should return to the LTE network in time.
  • the UE does not initiate an RRCConnectionRequest message before the timer expires.
  • the UE may continue to scan the frequency of the GSM cell and may also generate false alarm information (OOS).
  • OOS false alarm information
  • the embodiment of the present invention further provides a CSFB-based terminal detecting device. As shown in FIG. 5, the device includes:
  • the detecting unit 51 is configured to: after detecting the failure of the CSFB based on the indication information of the indication terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result; the indication information is used to indicate that the terminal adopts a preset An optimized solution for returning to the LTE network by CSFB;
  • the determining unit 52 is configured to determine, by using the detection result, whether the terminal successfully returns to the LTE network, where
  • the CSFB failure is generated by the terminal based on the GSM cell access failure; the GSM cell with the access failure includes the designated GSM cell and the corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in the LTE base station. Redirect command
  • the CSFB is triggered when the terminal receives the paging message sent by the LTE base station.
  • the determining unit 52 is configured to:
  • the terminal When it is detected that the terminal does not send an RRC connection setup request to the LTE base station, it is determined that the return result of returning to the LTE network is a return failure.
  • the determining unit 52 is configured to:
  • the terminal After the terminal establishes an RRC connection with the LTE base station, when it is detected that the terminal does not send a location update request to the core network, it is determined that the return result of returning to the LTE network is a return failure.
  • the determining unit 52 determines that the return result of the return to the LTE network is a return success.
  • the detecting unit 51 is configured to:
  • the device sends a connection establishment request.
  • the detecting unit 51 is configured to:
  • the detecting unit 51 and the determining unit 52 may be implemented by a processor in a CSFB-based terminal detecting device.
  • the CSFB-based terminal detecting apparatus provided in the foregoing embodiment is only illustrated by the division of each of the foregoing program modules when performing terminal detection. In actual applications, the foregoing processing may be allocated to different programs according to needs. The module is completed, dividing the internal structure of the device into different program modules to complete all or part of the processing described above.
  • the CSFB-based terminal detection device provided by the foregoing embodiment is the same as the CSFB-based terminal detection method embodiment, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • the embodiment of the present invention further provides a CSFB-based terminal detection apparatus, as shown in FIG. 60 includes a processor 61 and a memory 62 configured to store a computer program capable of running on the processor,
  • processor 61 is configured to execute the computer program:
  • the CSFB fails to be performed based on the indication information indicating the terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result; the indication information is used to indicate that the terminal returns by using a preset circuit domain back CSFB. Optimization scheme for LTE networks;
  • the CSFB failure is generated by the terminal based on the GSM cell access failure; the GSM cell with the access failure includes the designated GSM cell and the corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in the LTE base station. Redirect command
  • the CSFB is triggered when the terminal receives the paging message sent by the LTE base station. OK.
  • the processor 61 is configured to execute when the computer program is executed:
  • the terminal When it is detected that the terminal does not send the radio resource control RRC connection setup request to the LTE base station, it is determined that the return result of returning to the LTE network is a return failure.
  • the processor 61 is configured to execute when the computer program is executed:
  • the terminal After the terminal establishes an RRC connection with the LTE base station, when it is detected that the terminal does not send a location update request to the core network, it is determined that the return result of returning to the LTE network is a return failure.
  • the processor 61 is configured to execute when the computer program is executed:
  • the terminal After the terminal establishes an RRC connection with the LTE base station, when it is detected that the terminal sends a location update request to the core network, and completes the location update process, it is determined that the return result returned to the LTE network is a return success.
  • the processor 61 is configured to execute when the computer program is executed:
  • a timer is set to detect whether the terminal sends a connection establishment request to the LTE network device before the timer expires.
  • the processor 61 is configured to execute when the computer program is executed:
  • bus system 63 the various components of the device 60 are coupled together by a bus system 63.
  • bus system 63 is used to implement connection communication between these components.
  • the bus system 63 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • various buses are labeled as bus system 63 in FIG.
  • an embodiment of the present invention further provides a computer storage medium, which is a computer readable storage medium, such as a memory 62 including a computer program, which may be processor 61 of a CSFB-based terminal detecting device 60. Execution to complete the aforementioned method Steps.
  • the computer readable storage medium may be a magnetic random access memory (FRAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), and an erasable memory. Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash Memory, Magnetic Surface Memory, Optical Disc Or a memory such as a CD-ROM (Compact Disc Read-Only Memory).
  • the disclosed method and smart device may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the solution provided by the embodiment of the present invention after detecting the failure of the CSFB based on the indication information of the indication terminal, detecting whether the terminal sends a connection establishment request to the LTE network device, and obtaining a detection result; the indication information is used to indicate that the terminal uses the pre- The optimization scheme of the LTE network is returned by the CSFB; the detection result is used to determine whether the terminal successfully returns to the LTE network; wherein the CSFB failure is generated by the terminal based on the GSM cell access failure; the GSM cell with the failed access Include a specified GSM cell and a corresponding neighboring cell; the frequency point information of the designated GSM cell is carried in a redirection command sent by the LTE base station; and the CSFB is that the terminal receives the paging message sent by the LTE base station When the triggering is performed, the solution provided by the embodiment of the present invention can detect the result of the message connection establishment request after the CSFB failure in the scenario where the GSM network is not served in the CSFB process,

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Abstract

L'invention concerne un procédé et un appareil de détection de terminal reposant sur un repli sur commutation de circuits (CSFB), ainsi qu'un support de stockage informatique. Le procédé consiste à : détecter, après l'exécution d'un CSFB, sur la base d'informations d'indication indiquant qu'un terminal a échoué, si le terminal envoie une demande d'établissement de connexion à un dispositif de réseau LTE, et obtenir un résultat de détection, les informations d'indication étant utilisées pour indiquer que le terminal utilise un système d'optimisation prédéfini consistant à retourner du CSFB à un réseau LTE; et utiliser le résultat de détection pour déterminer si le terminal retourne avec succès au réseau LTE, l'échec de CSFB étant généré par le terminal sur la base d'un échec d'accès à une cellule GSM, les cellules GSM sujettes à l'échec d'accès comprenant une cellule GSM spécifiée et une cellule adjacente correspondante, des informations de point de fréquence concernant la cellule GSM spécifiée étant transportées dans une commande de redirection envoyée par une station de base LTE, et l'exécution du CSFB étant déclenchée après que le terminal a reçu un message de recherche de mobile envoyé par la station de base LTE.
PCT/CN2017/104989 2017-09-30 2017-09-30 Procédé et appareil de détection de terminal reposant sur un csfb, et support de stockage informatique WO2019061490A1 (fr)

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CN201780001905.2A CN108124512B (zh) 2017-09-30 2017-09-30 一种基于csfb的终端检测方法及装置、计算机存储介质
PCT/CN2017/104989 WO2019061490A1 (fr) 2017-09-30 2017-09-30 Procédé et appareil de détection de terminal reposant sur un csfb, et support de stockage informatique

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