WO2019061490A1 - 一种基于csfb的终端检测方法及装置、计算机存储介质 - Google Patents

一种基于csfb的终端检测方法及装置、计算机存储介质 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)
French (fr)
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/zh
Publication of WO2019061490A1 publication Critical patent/WO2019061490A1/zh

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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

本发明公开了一种基于CSFB的终端检测方法、装置及计算机存储介质。其中方法包括：在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；利用检测结果，判断所述终端是否成功返回LTE网络；其中，所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。

Description

一种基于CSFB的终端检测方法及装置、计算机存储介质 技术领域
本发明涉及电路域回落(CSFB，Circuit Switched Fallback)技术领域，尤其涉及一种基于CSFB的终端检测方法及装置、计算机存储介质。
背景技术
由于长期演进(LTE，Long Term Evolution)和2G/3G双模终端的无线通信是单一无线模式(Signal-radio mode)，因此，具有LTE和2G/3G接入能力的双模或者多模终端，在使用LTE接入时，无法传输2G/3G电路域业务信号。为了使终端(UE，User Equipment)在LTE接入或驻留下能够进行话音等电路域(CS，Circuit Switched)业务，并且能够对UE在LTE接入下正在进行的分组域(PS，Packet Switch)业务进行正确地处理，产生了CSFB技术。
在CSFB过程中，电话的发起者称为主叫(MO，Mobile Origination)，电话的接收者称为被叫(MT，Mobile Termination)，MO和MT各自对应有自己的CSFB信令流程。对于CSFB过程中的MT而言，由于各种异常情况的出现会概率性地导致CSFB过程失败，从而导致电话无法接通，如何有效检测异常场景下的CSFB的回落结果尤为必要。
发明内容
为解决上述技术问题，本发明实施例提供了一种基于CSFB的终端检测方法及装置、计算机存储介质。
本发明实施例提供了一种基于CSFB的终端检测方法，包括：
在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向 LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；
利用检测结果，判断所述终端是否成功返回LTE网络；其中，
所述CSFB失败是所述终端基于全球移动通信***(GSM，Global System for Mobile Communication)小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；
所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
上述方案中，所述利用检测结果，判断所述终端是否成功返回LTE网络，包括：
当检测到所述终端未向LTE基站发送无线资源控制(RRC，Radio Resource Control)连接建立请求时，确定返回LTE网络的返回结果为返回失败。
上述方案中，所述利用检测结果，判断所述终端是否成功返回LTE网络，包括：
所述终端与LTE基站建立RRC连接后，当检测到所述终端未向核心网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
上述方案中，所述利用检测结果，判断所述终端是否成功返回LTE网络，包括：
所述终端与LTE基站建立RRC连接后，当检测到所述终端向核心网发送位置更新请求，且完成位置更新流程时，确定返回LTE网络的返回结果为返回成功。
上述方案中，所述检测所述终端是否向LTE网络设备发送连接建立请求，包括：
设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络设备发送连接建立请求。
上述方案中，所述检测所述终端是否向LTE网络设备发送连接建立请求，包括：
检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
本发明实施例还提供了一种基于CSFB的终端检测装置，包括：
检测单元，配置为在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；
确定单元，配置为利用检测结果，判断所述终端是否成功返回LTE网络；其中，
所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；
所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
上述方案中，所述确定单元，配置为：
当检测到所述终端未向LTE基站发送RRC连接建立请求时，确定返回LTE网络的返回结果为返回失败。
上述方案中，所述确定单元，配置为：
所述终端与LTE基站建立RRC连接后，当检测到所述终端未向核心网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
上述方案中，所述检测单元，配置为：
设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络 设备发送连接建立请求。
上述方案中，所述检测单元，配置为：
检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
本发明实施例又提供了一种基于CSFB的终端检测装置，所述装置包括：处理器和配置为存储能够在处理器上运行的计算机程序的存储器，
其中，所述处理器配置为运行所述计算机程序时，执行上述任一方法的步骤。
本发明实施例还提供了一种计算机存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述任一方法的步骤。
本发明实施例提供的技术方案，在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；利用检测结果，判断所述终端是否成功返回LTE网络；其中，所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的，采用本发明实施例提供的方案，能够在CSFB过程中GSM网络无服务的场景下检测出CSFB失败后的信连接建立请求结果，从而最终确定出返回LTE网络的返回结果，这样，在后续CSFB回落失败返回LTE网络的过程中，可以进一步完善优化方案来提高返回LTE网络成功的概率，以提升用户的呼叫体验。
附图说明
图1为本发明实施例基于CSFB的终端检测方法的流程示意图；
图2为本发明应用实施例基于CSFB的终端检测方法的流程示意图；
图3为本发明实施例仿真代码的示意图一；
图4为本发明实施例的仿真代码的示意图二；
图5为本发明实施例基于CSFB的终端检测装置的结构组成示意图；
图6为本发明实施例基于CSFB的终端检测装置的硬件结构组成示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。
正常情况下，具有CSFB功能的终端开机能够搜索LTE网络，完成LTE/2G网络联合注册，并能够进行语音主叫及被叫。
CSFB过程包括三个阶段：1)UE在LTE网络发起呼叫(对应于MO)，或者接收寻呼(对应于MT)；2)UE在LTE网络指引下回落并搜索合适的GSM小区/WCDMA小区进行接入；3)UE读取GSM小区/WCDMA小区***广播消息并建立语音通话。
随着LTE基站规模不断地扩大，以及部分旧的GSM/TDSCDMA基站的退网和重耕，原有的网络部署在基站信令侧的配置并未实时更新，出现了网络下发给UE的配置信息和实际的部署情况不一致，从而导致CSFB这种跨***(InterRAT)的语音通话出现各种异常情况，比如无法接通，重复连接失败等。
为解决此类因网络部署不兼容状况而带来的通话问题，各终端厂商采用了各种优化手段来提高通话体验，为验证CSFB优化方案的合理性，有必要对异常场景下的CSFB过程进行检测，以便针对性地完善CSFB优化方案。
CSFB回落方案采用3GPP R8重定向回落方案，在CSFB部署过程中， 因无GSM网络服务的问题会概率性地导致CSFB过程出现异常。为此，本发明实施例提供了一种无GSM网络服务使得终端执行CSFB失败的场景下，CSFB回落结果的检测方法。
在本发明的各种实施例中，在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；利用检测结果，判断所述终端是否成功返回LTE网络；其中，所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
采用本发明实施例提供的方案，能够在CSFB过程中GSM网络无服务的场景下检测出CSFB失败后的信连接建立请求结果，从而最终确定出返回LTE网络的返回结果，这样，在后续CSFB回落失败返回LTE网络的过程中，可以进一步完善优化方案来提高返回LTE网络成功的概率，以提升用户的呼叫体验。
图1为本发明实施例提供的基于CSFB的终端检测方法的流程示意图，如图1所示，基于CSFB的终端检测方法包括以下步骤：
步骤101：在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；
这里，所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案。
其中，所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区。
所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令 中；所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
实际应用时，可以通过实验室仿真的方式来构造一个应用于本发明实施例的网络环境，也就是说，本发明实施例所述终端所在的场景是通过仿真方式得到的，这样处理，一方面，工作人员不需要去现场检测，从而能够降低人员成本；另一方面，现场的场景有可能还包含了其他因素，从而影响检测结果，所以采用本发明实施例的仿真网络，能够稳定复现现场网络出现的CSFB异常场景，能够消除在本发明实施例所描述的场景下其他因素对检测结果的影响。
基于此，在一些实施例中，检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
实际应用时，可以设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络设备发送连接建立请求。这里，定时器的作用是防止检测时间过长。
步骤102：利用检测结果，判断所述终端是否成功返回LTE网络。
具体地，当检测到所述终端未向LTE基站发送RRC连接建立请求时，确定返回LTE网络的返回结果为返回失败。
其中，当检测到所述终端向LTE基站发送了RRC连接建立请求时，所述终端完成RRC连接建立。所述终端与LTE建立RRC连接后，当检测到所述终端未向核心网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
当然，当检测到所述终端向核心网发送位置更新请求，且完成位置更新流程时，确定返回LTE网络的返回结果为返回成功。
实际应用时，所述位置更新请求的表现形式可以是跟踪区域更新请求消息。
本发明实施例提供的方法，在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；利用检测结果，判断所述终端是否成功返回LTE网络；其中，所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的，采用本发明实施例提供的方案，能够在CSFB过程中GSM网络无服务的场景下检测出CSFB失败后的信连接建立请求结果，从而最终确定出返回LTE网络的返回结果，这样，在后续CSFB回落失败返回LTE网络的过程中，可以进一步完善优化方案来提高返回LTE网络成功的概率，以提升用户的呼叫体验。
另外，检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求，采用仿真的方式不需要工作人员去现场，且可以去除其他影响检测的因素，如此，能够大大降低人员成本，同时，能够消除在本发明实施例所描述的场景下其他因素对检测结果的影响。
下面结合一个应用实施例对本发明再作进一步详细的描述。
在本应用实施例中，通过仿真平台构造一个网络环境，包括：时分双工(TDD)-LTE小区、TDSCDMA小区、GSM小区；其中，LTE SIB中配置两个邻区小区信息，即GSM 0和GSM 1信息，在GSM SI中配置LTE邻区小区信息。
本应用实施例的异常场景是：网络侧指定的GSM 0小区无服务，邻区GSM1小区弱信号，从而来验证UE侧在CSFB失败后优化方案的有效性和合理性。
本应用实施例基于CSFB的终端检测方法，如图2所示，包括以下步 骤：
步骤200：UE注册在LTE小区上，进行附着流程；
具体地，UE为MT，UE开机后，首先执行联合演进分组***(EPS，Evolved Packet System)/国际移动用户识别码(IMSI，International Mobile Subscriber Identification Number)附着流程。
其中，在这个过程中包括触发UE向LTE基站发送附着请求消息(Attach Request)，接收所述LTE基站发送的附着接受消息(Attach Accept)，其中，所述附着接受消息携带用于指示所述终端采用CSFB进行语音业务的指示信息。图3为本发明实施例的仿真代码的示意图一，其中：IMS voice over PS(V)＝Not supported(0)，代表所述指示信息。另外，所述指示信息还指示所述终端采用预设的由CSFB返回LTE网络的优化方案。
步骤201：网络侧触发MT CSFB流程，网络侧发送寻呼消息(Paging)给UE，开始CSFB流程；
这里，实际应用时，需要MO首先发起针对MT的呼叫，然后，MT才接收到网络侧下发的寻呼消息。
具体地，网络中的移动业务交换中心(MSC)收到初始地址请求(IAM)入局消息后，根据存在的SGs关联和移动管理实体(MME，Mobility Management Entity)信息，发送SGsAP-PAGING-REQUEST消息给MME，这里，SGsAP-PAGING-REQUEST消息携带如下信息：IMSI、临时移动用户标识(TMSI，Temporary Mobile Subscriber Identity)、业务标识(Service indicator)、主叫号码、位置区信息。
MME收到消息后发送寻呼(Paging)消息给基站，基站发起空口的Paging流程。UE建立连接并发送Extended Service Request消息给MME，MME发送SGsAP-SERVICE-REQUEST消息给MSC，MSC收到此消息，不再向MME重发寻呼请求消息。为避免呼叫接续过程中，主叫等待时间过 长，MSC收到包含空闲态指示的SGs Service Request消息，先通知主叫呼叫正在接续过程中。MME发送Initial UE Context Setup消息给基站，这里，Initial UE Context Setup消息携带CS Fallback Indicator，CS Fallback Indicator用于指示基站UE因CSFB业务需要回落到UMTS陆地无线接入网(UTRAN，UMTS Terrestrial Radio Access Network)/GSM/EDGE无线接入网(GERAN，GSM EDGE Radio Access Network)。
在附着流程中，UE收到LTE基站发送的LTE_RRCConnectionRelease信令，即重定向命令。重定向命令中携带指定GSM小区(假设为GSM0)的频点信息。如图4所示，基站下发R8重定向命令(rrcConnectionRelease_R8(0))给UE，该命令携带目标GSM小区即GSM0的频点信息，然而GSM 0无服务，且GSM 1小区信号未满足接入要求，即信号强度在接入门限之下，这种异常场景使得终端执行CSFB失败。
步骤202：通过仿真平台关闭GSM 0小区信号，以模拟指定小区无服务；同时调低GSM 1小区的信号强度到接入门限之下，以模拟邻小区不可用，从而模拟CSFB流程回落失败场景，此时UE执行CSFB失败；
步骤203：在LTE网络侧检测UE是否在指定的定时器时长内发起RRCConnectionRequest消息，如果是，则执行步骤204，否则，说明LTE网络返回失败，也就是说，预设的优化方案失败；
步骤204：UE完成RRC连接建立后，检测UE是否向核心网发送TrackingAreaUpdateRequest消息，如果是，完成流程，说明LTE网络返回成功，预设的优化方案成功；否则，说明LTE网络返回失败，预设的优化方案失败。
其中，依据预设CSFB失败后UE迅速返回LTE网络的优化方案，当UE执行CSFB失败后，UE应当及时返回LTE网络。
这里，UE在定时器超时前未发起RRCConnectionRequest消息，此时 UE可能在继续扫描GSM小区的频点，也可能产生错误报警信息(OOS)。
为实现本发明实施例的方法，本发明实施例还提供了一种基于CSFB的终端检测装置，如图5所示，所述装置包括：
检测单元51，配置为在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；
确定单元52，配置为利用检测结果，判断所述终端是否成功返回LTE网络；其中，
所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；
所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
在一些实施例中，所述确定单元52，配置为：
当检测到所述终端未向LTE基站发送RRC连接建立请求时，确定返回LTE网络的返回结果为返回失败。
在一些实施例中，所述确定单元52，配置为：
所述终端与LTE基站建立RRC连接后，当检测到所述终端未向核心网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
这里，所述终端与LTE基站建立RRC连接后，当检测到所述终端向核心网发送位置更新请求，且完成位置更新流程时，所述确定单元52确定返回LTE网络的返回结果为返回成功。
在一些实施例中，所述检测单元51，配置为：
设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络 设备发送连接建立请求。
在一些实施例中，，所述检测单元51，配置为：
检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
实际应用时，所述检测单元51、确定单元52可由基于CSFB的终端检测装置中的处理器实现。
需要说明的是：上述实施例提供的基于CSFB的终端检测装置在进行终端检测时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上述处理分配由不同的程序模块完成，即将装置的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的基于CSFB的终端检测装置与基于CSFB的终端检测方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
基于上述基于CSFB的终端检测装置中各单元的硬件实现，为了实现本发明实施例提供的方法，本发明实施例还提供了一种基于CSFB的终端检测装置，如图6所示，所述装置60包括：处理器61和配置为存储能够在处理器上运行的计算机程序的存储器62，
其中，所述处理器61配置为运行所述计算机程序时，执行：
在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由电路域回落CSFB返回LTE网络的优化方案；
利用检测结果，判断所述终端是否成功返回LTE网络；其中，
所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；
所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执 行的。
在一些实施例中，所述处理器61配置为运行所述计算机程序时，执行：
当检测到所述终端未向LTE基站发送无线资源控制RRC连接建立请求时，确定返回LTE网络的返回结果为返回失败。
在一些实施例中，所述处理器61配置为运行所述计算机程序时，执行：
所述终端与LTE基站建立RRC连接后，当检测到所述终端未向核心网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
在一些实施例中，所述处理器61配置为运行所述计算机程序时，执行：
所述终端与LTE基站建立RRC连接后，当检测到所述终端向核心网发送位置更新请求，且完成位置更新流程时，确定返回LTE网络的返回结果为返回成功。
在一些实施例中，所述处理器61配置为运行所述计算机程序时，执行：
设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络设备发送连接建立请求。
在一些实施例中，所述处理器61配置为运行所述计算机程序时，执行：
检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
当然，实际应用时，如图6所示，该装置60中的各个组件通过总线***63耦合在一起。可理解，总线***63用于实现这些组件之间的连接通信。总线***63除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图6中将各种总线都标为总线***63。
在示例性实施例中，本发明实施例还提供了一种计算机存储介质，是计算机可读存储介质，例如包括计算机程序的存储器62，上述计算机程序可由基于CSFB的终端检测装置60的处理器61执行，以完成前述方法所 述步骤。计算机可读存储介质可以是磁性随机存取存储器(FRAM，ferromagnetic random access memory)、只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)等存储器。
本发明实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
在本发明所提供的几个实施例中，应该理解到，所揭露的方法和智能设备，可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个***，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本发明各实施例中的各功能单元可以全部集成在一个第二处理单元中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。
工业实用性
本发明实施例提供的方案，在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；利用检测结果，判断所述终端是否成功返回LTE网络；其中，所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的，采用本发明实施例提供的方案，能够在CSFB过程中GSM网络无服务的场景下检测出CSFB失败后的信连接建立请求结果，从而最终确定出返回LTE网络的返回结果，这样，在后续CSFB回落失败返回LTE网络的过程中，可以进一步完善优化方案来提高返回LTE网络成功的概率，以提升用户的呼叫体验。

Claims (13)

  1. 一种基于电路域回落CSFB的终端检测方法，所述方法包括：
    在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向长期演进LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；
    利用检测结果，判断所述终端是否成功返回LTE网络；其中，
    所述CSFB失败是所述终端基于全球移动通信***GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；
    所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
  2. 根据权利要求1所述的方法，其中，所述利用检测结果，判断所述终端是否成功返回LTE网络，包括：
    当检测到所述终端未向LTE基站发送无线资源控制RRC连接建立请求时，确定返回LTE网络的返回结果为返回失败。
  3. 根据权利要求1所述的方法，其中，所述利用检测结果，判断所述终端是否成功返回LTE网络，包括：
    所述终端与LTE基站建立RRC连接后，当检测到所述终端未向核心网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
  4. 根据权利要求1所述的方法，其中，所述利用检测结果，判断所述终端是否成功返回LTE网络，包括：
    所述终端与LTE基站建立RRC连接后，当检测到所述终端向核心网发送位置更新请求，且完成位置更新流程时，确定返回LTE网络的返回结果为返回成功。
  5. 根据权利要求1所述的方法，其中，所述检测所述终端是否向LTE网络设备发送连接建立请求，包括：
    设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络设备发送连接建立请求。
  6. 根据权利要求1所述的方法，其中，所述检测所述终端是否向LTE网络设备发送连接建立请求，包括：
    检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
  7. 一种基于CSFB的终端检测装置，所述装置包括：
    检测单元，配置为在基于指示终端的指示信息执行CSFB失败后，检测所述终端是否向LTE网络设备发送连接建立请求，得到检测结果；所述指示信息用于指示所述终端采用预设的由CSFB返回LTE网络的优化方案；
    确定单元，配置为利用检测结果，判断所述终端是否成功返回LTE网络；其中，
    所述CSFB失败是所述终端基于GSM小区接入失败产生的；接入失败的GSM小区包含指定的GSM小区以及对应的邻小区；所述指定的GSM小区的频点信息携带在LTE基站发送的重定向命令中；
    所述CSFB是所述终端接收到所述LTE基站发送的寻呼消息时触发执行的。
  8. 根据权利要求7所述的装置，其中，所述确定单元，配置为：
    当检测到所述终端未向LTE基站发送RRC连接建立请求时，确定返回LTE网络的返回结果为返回失败。
  9. 根据权利要求7所述的装置，其中，所述确定单元，配置为：
    所述终端与LTE基站建立RRC连接后，当检测到所述终端未向核心 网发送位置更新请求时，确定返回LTE网络的返回结果为返回失败。
  10. 根据权利要求7所述的装置，其中，所述检测单元，配置为：
    设置定时器，检测所述终端是否在所述定时器超时前向所述LTE网络设备发送连接建立请求。
  11. 根据权利要求7所述的装置，其中，所述检测单元，配置为：
    检测位于仿真网络环境下的所述终端是否向LTE网络设备发送连接建立请求。
  12. 一种基于CSFB的终端检测装置，所述装置包括：处理器和配置为存储能够在处理器上运行的计算机程序的存储器，
    其中，所述处理器配置为运行所述计算机程序时，执行权利要求1至6任一项所述方法的步骤。
  13. 一种计算机存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至6任一项所述方法的步骤。
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