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WO2019061424A1 - Procédé et dispositif de détection de résultat de procédure de repli csfb, et support de stockage informatique - Google Patents

Procédé et dispositif de détection de résultat de procédure de repli csfb, et support de stockage informatique Download PDF

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Publication number
WO2019061424A1
WO2019061424A1 PCT/CN2017/104840 CN2017104840W WO2019061424A1 WO 2019061424 A1 WO2019061424 A1 WO 2019061424A1 CN 2017104840 W CN2017104840 W CN 2017104840W WO 2019061424 A1 WO2019061424 A1 WO 2019061424A1
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WIPO (PCT)
Prior art keywords
csfb
terminal
gsm cell
base station
channel
Prior art date
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Ceased
Application number
PCT/CN2017/104840
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English (en)
Chinese (zh)
Inventor
曾元清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Yun Zhong Fei Network Technology Co Ltd
Original Assignee
Shenzhen Yun Zhong Fei Network Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Shenzhen Yun Zhong Fei Network Technology Co Ltd filed Critical Shenzhen Yun Zhong Fei Network Technology Co Ltd
Priority to PCT/CN2017/104840 priority Critical patent/WO2019061424A1/fr
Priority to CN201780001932.XA priority patent/CN109792661B/zh
Publication of WO2019061424A1 publication Critical patent/WO2019061424A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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 fallback result detecting 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 CSFB process due to the occurrence of various abnormal conditions, the CSFB process often fails, which causes the phone to fail to connect. How to effectively detect the CSFB fallback result under abnormal scenarios is especially necessary.
  • an embodiment of the present invention provides a CSFB fallback result detecting method and apparatus, and a computer storage medium.
  • an embodiment of the present invention provides a method for detecting a fallback result of a CSFB, including:
  • the triggering terminal sends an attach request message to the long-term evolved LTE base station, and receives an attach accept message sent by the LTE base station, where the attach accept message carries indication information used to indicate that the terminal uses the preset CSFB optimization scheme to perform voice service. ;
  • the terminal When the terminal receives the paging message sent by the LTE base station, the terminal controls the terminal to perform the CSFB process based on the CSFB optimization scheme indicated by the indication information and the redirect command sent by the LTE base station;
  • the terminal In the process of performing the CSFB, after detecting that the terminal fails to access the first GSM cell, detecting that the terminal accesses a voice call state of the second GSM cell; wherein the first GSM cell has a pseudo base station characteristic, The second GSM cell has normal base station characteristics, and the signal strength of the first GSM cell is greater than the signal strength of the second GSM cell;
  • the detecting that the terminal fails to access the first GSM cell includes:
  • the cause of the access channel carried by the first channel access request is a preset first cause value, triggering the first GSM cell to ignore the first channel access request;
  • the determining whether the CSFB is successfully dropped by using the detected voice call state includes:
  • the terminal In a preset second time period, when detecting that the terminal sends the second GSM cell When the third channel access request is sent, the terminal is controlled to continue to execute the CSFB process;
  • the terminal When the terminal sends a third channel access request to the second GSM cell, and successfully establishes a voice call link, it is determined that the CSFB fallback is successful.
  • the method further includes:
  • the method further includes:
  • the determining whether the CSFB is successfully dropped by using the detected voice call state includes:
  • an embodiment of the present invention provides a fallback result detecting apparatus for a circuit domain fallback CSFB, including: an attaching portion, a CSFB falling portion, a detecting portion, and a determining portion; wherein
  • the attaching part is configured to trigger the terminal to send an attach request message to the long-term evolved LTE base station, and receive an attach accept message sent by the LTE base station, where the attach accept message carries the preset CSFB optimization used by the terminal to be used by the terminal.
  • the instruction information of the voice service is implemented by the solution;
  • the CSFB fallback portion is configured to, when the terminal receives the paging message sent by the LTE base station, control the terminal to perform the CSFB process according to the CSFB optimization scheme indicated by the indication information and the redirect command sent by the LTE base station;
  • the detecting part is configured to: after detecting that the terminal accesses the first GSM cell fails in the process of performing the CSFB, detecting that the terminal accesses a voice call state of the second GSM cell; wherein, the first The GSM cell has a pseudo base station characteristic, and the second GSM is small The area has normal base station characteristics, and the signal strength of the first GSM cell is greater than the signal strength of the second GSM cell;
  • the determining part is configured to determine whether the CSFB is successfully dropped by using the detected voice call state.
  • the detecting part is configured to:
  • the cause of the access channel carried by the first channel access request is a preset first cause value, triggering the first GSM cell to ignore the first channel access request;
  • control part is further configured to:
  • the determining part is further configured to: when the terminal sends a third channel access request to the second GSM cell, and successfully establishes a voice call link, determining that the CSFB falls back successfully.
  • the determining part is further configured to:
  • the determining part is further configured to:
  • the determining part is further configured to:
  • an embodiment of the present invention provides a fallback result detecting apparatus for a circuit domain fallback CSFB, including: a processor and a memory for storing a computer program capable of running on a processor, wherein the processor is configured to run The computer program, when the steps of the method of any of the first aspects are performed.
  • an embodiment of the present invention provides a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the method of any of the first aspects.
  • the triggering terminal sends an attach request message to the long-term evolved LTE base station, and receives an attach accept message sent by the LTE base station, where the attach accept message is used to indicate that the terminal adopts a preset
  • the CSFB optimization scheme performs indication information of the voice service; when the terminal receives the paging message sent by the LTE base station, the terminal controls the terminal to execute the CSFB according to the CSFB optimization scheme indicated by the indication information and the redirect command sent by the LTE base station.
  • the CSFB fallback result can be detected in the scenario of strong interference of the pseudo base station cell, so that the CSFB optimization scheme can be further improved to improve the probability of the CSFB process success, so as to improve the user's call experience.
  • FIG. 1 is a schematic diagram of a channel acquisition process in a CSFB process
  • FIG. 2 is a schematic flowchart of a method for detecting a fallback result of a CSFB according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram 1 of a simulation 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 diagram of a composition of a CSFB fallback result detecting apparatus according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram showing the hardware structure of a CSFB fallback result 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 2G/3G cell, such as The GSM cell/WCDMA cell accesses; 3) the UE reads the GSM cell/WCDMA cell system broadcast message and establishes a voice call.
  • the channel acquisition process is an important process.
  • the channel acquisition process may include:
  • Step 101 The UE is powered on, and performs an Evolved Packet System (EPS)/International Mobile Subscriber Identification Number (IMSI) attachment.
  • EPS Evolved Packet System
  • IMSI International Mobile Subscriber Identification Number
  • Step 102 The UE receives the CS paging message and starts executing the CSFB process.
  • Step 103 The UE receives the redirect command sent by the network, and carries the redirect information in the redirect command.
  • the redirection command is implemented by LTE_RRCConnectionRelease signaling.
  • Step 104 The UE sends a channel to the network based on the redirection information carried in the redirection command. Request message (CHANNEL_REQUEST).
  • the redirection information is used by the UE to perform redirection, and may include, but is not limited to, a starting frequency of a neighboring frequency group of a configured GSM radio access network (GERAN, GSM Radio Access Network).
  • GERAN GSM radio access network
  • BCCH Broadcast Control Channel
  • the T360 timer is started to count the number of times the CHANNEL_REQUEST is retransmitted by the random access procedure, and the maximum number of retransmissions is preset.
  • the terminal will start the T3126 timer to time the terminal to silently not send CHANNEL_REQUEST; if the T3126 timer expires (the time is reached), the network still has no If the channel request of the terminal is answered, the terminal abandons the request attempt.
  • Step 105 The UE receives the IM message replied by the network, and obtains the channel allocated by the network by using the IM message.
  • 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 strong signal interference problem of the pseudo base station cell will probabilistically cause an abnormality in the CSFB process.
  • the embodiment of the present invention provides a CSFB fallback result detection method in a scenario where a pseudo base station cell has strong signal interference.
  • the method for detecting the fallback result of the CSFB may include:
  • the triggering terminal sends an attach request message to the long-term evolved LTE base station, and receives an attach accept message sent by the LTE base station.
  • the attach accept message carries indication information for instructing the terminal to perform voice service by using a preset CSFB optimization scheme
  • S203 After detecting that the terminal fails to access the first GSM cell, performing a process of the CSFB, detecting that the terminal accesses a voice call state of the second GSM cell;
  • the first GSM cell has a pseudo base station characteristic
  • the second GSM cell has a normal base station characteristic
  • the signal strength of the first GSM cell is greater than the signal strength of the second GSM cell.
  • S204 Determine whether the CSFB is successfully dropped by using the detected voice call state.
  • a network environment can be constructed by using a simulation platform, including: a TDD-LTE cell, a TDSCDMA/GSM cell, and a GSM cell is used as a cell for implementing CS voice in this embodiment, where the LTE SIB is configured.
  • the GSM0 cell is neighbor cell information, has normal base station characteristics; the cell information of the pseudo base station characteristic is added in the GSM0 cell, and the signal strength of the GSM0 cell is configured to be higher than the signal strength of the GSM1 cell, and then, based on the constructed network environment CSFB process.
  • the first GSM cell is a GSM0 cell
  • the second GSM cell is a GSM1 cell.
  • the two GSM cells are respectively added with the cell information of the normal base station characteristics and the cell information of the pseudo base station characteristics.
  • the scenario in which the GSM cell signal strength of the pseudo base station characteristic is higher than that of the normal base station characteristic is set, thereby realizing a scenario in which the pseudo base station has strong signal interference. Since the network environment of the embodiment of the present invention is based on a simulation platform configuration, on the one hand, the worker does not need to go to the site for detection, thereby reducing personnel costs; on the other hand, the scene of the scene may also contain other factors, thereby affecting the detection.
  • the simulation platform of the embodiment of the present invention can stably reproduce the CSFB anomaly scene with small probability in the network, and verify the feasibility and stability of the optimized CSFB scheme, that is, verify the condition of strong signal interference in the pseudo base station.
  • the feasibility and stability of the CSFB optimization scheme Based on this, in the embodiment of the present invention, the voice call state of the terminal under the GSM network in the simulated network environment can be detected.
  • the terminal refers to the MT, and after the terminal is powered on, the joint EPS/IMSI attachment is first performed, where the triggering terminal sends an attach request message (Attach Request) to the LTE base station, and receives the LTE base station. And an attach accept message, where the attach accept message carries indication information for instructing the terminal to perform voice service by using a preset CSFB optimization scheme.
  • the terminal performing the CSFB process may be triggered by the terminal receiving the paging message (Paging) sent by the LTE base station.
  • Paging paging message
  • the MO first needs to initiate the call for the MT, 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.
  • TMSI Temporary Mobile Subscriber Identity
  • Service Indicator Service Indicator
  • Calling Number Calling Number
  • Location Area Information 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.
  • the message is sent to the MME, and 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.
  • 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). ) / GSM / EDGE Radio Access Network (GERAN, GSM EDGE Radio Access Network). .
  • the terminal in the process of performing the CSFB, receives a redirect command sent by an LTE base station.
  • the redirect command is also LTE_RRCConnectionRelease signaling.
  • the base station sends an R8 redirection command (rrcConnectionRelease_R8(0)) to the terminal.
  • the network environment provided by the simulation platform has a scene condition of strong signal interference of the pseudo base station. Under such abnormal scenario conditions, the terminal cannot be directed back to the GSM cell with the additional normal base station characteristics through the process shown in FIG.
  • the terminal normally falls back to the GSM cell with the characteristics of the normal base station in the abnormal scenario according to the optimization scheme of the CSFB. Therefore, the embodiment of the present invention detects the voice call state of the terminal. To determine whether the CSFB fallback is successful, and thus determine whether the CSFB optimization scheme is reasonable.
  • the detecting, by the S203, that the terminal fails to access the first GSM cell includes:
  • the cause of the access channel carried by the first channel access request is a preset first cause value, triggering the first GSM cell to ignore the first channel access request;
  • the access channel cause value is parsed from the second channel access request
  • the simulation platform may detect whether the terminal initiates a first channel access request (Channel Request) in the GSM0 cell, and detects that the access channel cause value carried in the first channel access request is AnswerToPaging, and controls the GSM0 cell.
  • a pseudo base station has the following characteristics: no voice service is supported, and only fraud/advertising text messages are sent. Therefore, when the terminal CSFB reaches the pseudo base station cell, the pseudo base station cannot allocate the voice access channel to the terminal, and therefore, the pseudo base station cell ignores the channel access request initiated by the terminal.
  • the first timer may be set and timed according to the preset first time period.
  • the simulation platform may detect whether the terminal is to the GSM0 cell. Sending a second channel access request, and detecting that the access channel cause value carried in the second channel access request is LocationUpdate, controlling the GSM0 cell to continue ignoring the second channel access request; understandably, at the first time In the segment, the terminal may repeatedly send the second channel access request to the GSM0 cell multiple times, for example, the maximum number of repetitions is three. After the second timer expires, it is determined that the terminal fails to access the GSM0 cell, and therefore, the terminal should not send any channel access request to the GSM0 cell.
  • determining whether the CSFB is successfully dropped by using the detected voice call state includes:
  • determining whether the CSFB is successfully dropped by using the detected voice call state includes:
  • the terminal When the terminal sends a third channel access request to the second GSM cell, and successfully establishes a voice call link, it is determined that the CSFB fallback is successful.
  • the simulation platform may further set a second timer that is timed according to the second time period after the first timer expires, and detects whether the terminal sends the third access channel to the GSM1 cell before the timer expires. request.
  • the role of the timer is to prevent the detection time from being too long.
  • the method further includes:
  • the method further includes:
  • the control terminal continues to execute the CSFB process.
  • CSFB fallback plan When the terminal does not send a channel request message to the GSM cell before the second timer expires, that is, the CSFB fallback result is a fallback failure, and the preset CSFB optimization scheme used by the terminal is an unreasonable CSFB fallback scheme.
  • the case of the fallback failure may further include: determining that the CSFB fallback fails when the voice call link is not successfully established.
  • a CSFB fallback result detecting apparatus 5 which includes an attachment portion 51 and a CSFB fallback portion. 52, a detecting portion 53 and a determining portion 54; wherein
  • the attaching part 51 is configured to trigger the terminal to send an attach request message to the long-term evolved LTE base station, and receive an attach accept message sent by the LTE base station, where the attach accept message carries a preset CSFB for indicating that the terminal adopts the preset Optimizing the indication information of the voice service;
  • the CSFB fallback portion 52 is configured to, when the terminal receives the paging message sent by the LTE base station, control the terminal to perform the CSFB process based on the CSFB optimization scheme indicated by the indication information and the redirect command sent by the LTE base station. ;
  • the detecting part 53 is configured to detect, after detecting the failure of the terminal to access the first GSM cell, the voice call state of the terminal by accessing the second GSM cell, in the process of performing the CSFB; a GSM cell has a pseudo base station characteristic, the second GSM cell has a normal base station characteristic, and a signal strength of the first GSM cell is greater than a signal strength of the second GSM cell;
  • the determining portion 54 is configured to determine whether the CSFB is successfully dropped by using the detected voice call state.
  • each unit in the fallback result detecting device of the CSFB shown in FIG. 5 can be understood by referring to the related description of the CSFB fallback result detecting method.
  • the function of each unit in the fallback result detecting device of the CSFB shown in FIG. 5 can be realized by a program running on the processor, or can be realized by a specific logic circuit.
  • the detecting portion 53 is configured to:
  • the cause of the access channel carried by the first channel access request is a preset first cause value, triggering the first GSM cell to ignore the first channel access request;
  • control part is further configured to:
  • the determining part 54 is further configured to: when the terminal sends a third channel access request to the second GSM cell, and successfully establishes a voice call link, determining that the CSFB falls back successfully.
  • the determining portion 54 is further configured to:
  • the determining portion 54 is further configured to:
  • the determining portion 54 is further configured to:
  • the "part” may be a partial circuit, a partial processor, a partial program or software, etc., of course, may be a unit, a module, or a non-modular.
  • each component in the scheme shown in FIG. 5 may be integrated into one processing unit, or each unit may exist physically separately, 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 a software function module.
  • the integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product.
  • the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the present embodiment provides a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the steps of the CSFB fall result detection method of the above-described embodiments of the present invention.
  • the specific hardware structure of the CSFB fallback result detecting device 5 may include:
  • bus system 604 is used to implement connection communication between these components.
  • the bus system 604 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 604 in FIG.
  • the network interface 601 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.
  • a memory 602 configured to store a computer program capable of running on the processor 603;
  • the processor 603 is configured to: when the computer program is run, execute:
  • the triggering terminal sends an attach request message to the LTE base station, and receives an attach accept message sent by the LTE base station, where the attach accept message carries
  • the terminal uses the preset CSFB optimization scheme to perform indication information of the voice service;
  • the terminal When the terminal receives the paging message sent by the LTE base station, the terminal controls the terminal to perform the CSFB process based on the CSFB optimization scheme indicated by the indication information and the redirect command sent by the LTE base station;
  • the terminal In the process of performing the CSFB, after detecting that the terminal fails to access the first GSM cell, detecting that the terminal accesses a voice call state of the second GSM cell; wherein the first GSM cell has a pseudo base station characteristic, The second GSM cell has normal base station characteristics, and the signal strength of the first GSM cell is greater than the signal strength of the second GSM cell;
  • the memory 602 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • the processor 603 may be an integrated circuit chip with signal processing capabilities. In In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 603 or an instruction in a form of software.
  • the processor 603 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 602, and the processor 603 reads the information in the memory 602 and completes the steps of the above method in combination with its hardware.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the processor 603 is further configured to execute the present invention when the computer program is run.
  • the disclosed method and apparatus 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 embodiment of the invention can detect the voice call state of the terminal under the GSM network in the CSFB process in the scenario of strong interference of the pseudo base station cell, thereby finally determining the CSFB fallback result, thereby further improving the CSFB optimization scheme to improve the CSFB process.
  • the probability of success to enhance the user's calling experience.

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Abstract

Des modes de réalisation de la présente invention concernent un procédé et un dispositif de détection de résultat de procédure de repli CSFB, et un support de stockage informatique. Le procédé peut consister à : déclencher un terminal pour envoyer un message de demande de rattachement à une station de base en technologie d'évolution à long terme (LTE) et recevoir un message d'acceptation de rattachement envoyé par la station de base LTE, le message d'acceptation de rattachement transportant une information d'indication utilisée pour indiquer au terminal d'utiliser un schéma d'optimisation CSFB pré-configuré pour effectuer un service vocal ; lorsque le terminal reçoit un message de radiomessagerie envoyé par la station de base LTE, commander le terminal pour effectuer un processus CSFB sur la base du schéma d'optimisation CSFB indiqué par l'information d'indication et d'une instruction de redirection envoyée par la station de base LTE ; lors de la réalisation du processus CSFB, après avoir détecté que le terminal ne parvient pas à accéder à une première cellule GSM, détecter l'état d'un appel vocal du terminal accédant à une deuxième cellule GSM, la première cellule GSM ayant la caractéristique d'une pseudo-station de base, la deuxième cellule GSM ayant la caractéristique d'une station de base normale, et l'intensité de signal de la première cellule GSM étant supérieure à l'intensité de signal de la deuxième cellule GSM ; et déterminer si la procédure de repli CSFB réussit ou non en fonction de l'état détecté de l'appel vocal.
PCT/CN2017/104840 2017-09-30 2017-09-30 Procédé et dispositif de détection de résultat de procédure de repli csfb, et support de stockage informatique Ceased WO2019061424A1 (fr)

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