WO2019061433A1 - Procédé et dispositif de détection de résultat de repli par commutation de circuits (csfb), et support de stockage - Google Patents

Procédé et dispositif de détection de résultat de repli par commutation de circuits (csfb), et support de stockage Download PDF

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Publication number
WO2019061433A1
WO2019061433A1 PCT/CN2017/104867 CN2017104867W WO2019061433A1 WO 2019061433 A1 WO2019061433 A1 WO 2019061433A1 CN 2017104867 W CN2017104867 W CN 2017104867W WO 2019061433 A1 WO2019061433 A1 WO 2019061433A1
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WIPO (PCT)
Prior art keywords
csfb
voice call
terminal
fallback
wcdma
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PCT/CN2017/104867
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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
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 深圳市云中飞网络科技有限公司 filed Critical 深圳市云中飞网络科技有限公司
Priority to CN201780001893.3A priority Critical patent/CN108124511B/zh
Priority to PCT/CN2017/104867 priority patent/WO2019061433A1/fr
Publication of WO2019061433A1 publication Critical patent/WO2019061433A1/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 embodiment of the invention relates to the technical field of CSFB (Circuit Switched Fallback), and particularly relates to a CSFB fallback result detecting method and device, and a 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.
  • the embodiment of the present invention is to provide a CSFB fallback result detecting method and device, and a storage medium, which realize the detection of the fallback result in the CSFB process, thereby determining the communication scheme and improving the success of implementing the CSFB process. rate.
  • Embodiments of the present invention provide a CSFB fallback result detecting method, and the method package include:
  • the terminal sends a voice call request message to the target WCDMA cell according to the target wideband code division multiple access WCDMA cell frequency point information, where The target WCDMA cell frequency point information is carried in a redirect command sent by the Long Term Evolution (LTE) base station;
  • LTE Long Term Evolution
  • the terminal detects that the terminal receives the routing area update reject message and starts detecting the voice call state;
  • the terminal When it is detected that the voice call state is the hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice call in the WCDMA network ends, to determine a fallback result of the CSFB.
  • the method further includes:
  • the terminal After the voice call in the WCDMA network ends, the terminal returns to the LTE network within the preset duration, and determines that the CSFB fallback result is successful.
  • the method further includes:
  • the terminal After the voice call in the WCDMA network ends, the terminal does not return to the LTE network within the preset duration, and when detecting to continue to send a routing area update request message to the WCDMA network, determining the CSFB The result of the fall is the failure to fall back.
  • the method further includes:
  • the routing area update request message is sent to the WCDMA network, and the result of the CSFB fallback is determined to be a fallback failure.
  • the method further includes: before the terminal sends a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information, the method further includes:
  • the triggering the terminal to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries
  • the CSFB optimization scheme is set to indicate the voice service.
  • the detecting that the terminal receives the routing area update reject message and starts detecting the voice call state includes:
  • the rejection request cause value is a preset value
  • the detection of the voice call state is started.
  • a CSFB fallback result detecting apparatus provided by an embodiment of the present invention, the apparatus includes:
  • the voice call unit is configured to perform the CSFB process according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal sends the established voice according to the target wideband code division multiple access WCDMA cell frequency point information to the target WCDMA cell.
  • a call request message where the target WCDMA cell frequency point information is carried in a redirect command sent by the LTE base station;
  • the detecting unit is configured to, when responding to the voice call request message, successfully establish a voice call link, detecting that the terminal receives the routing area update reject message, and starts detecting the voice call state;
  • a determining unit configured to determine that the fallback result of the CSFB is a fallback failure when detecting that the voice call state is an off state; and determine that the voice call state is in a hold state when the voice call state is detected to be in a hold state After the voice call ends, the terminal returns to the LTE network within a preset duration to determine the fallback result of the CSFB.
  • the device further includes:
  • the determining unit is further configured to determine, after the voice call in the WCDMA network ends, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, the terminal When returning to the LTE network within the preset duration, it is determined that the CSFB fallback result is a fallback success.
  • the device further includes:
  • the determining unit is further configured to determine, after the voice call in the WCDMA network ends, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, the terminal Not returning to the LTE network within the preset duration, and detecting that the routing area update request message is continued to be sent to the WCDMA network,
  • Determining the fallback result of the CSFB is a fallback failure.
  • the device further includes:
  • the determining unit is further configured to: after receiving the routing area update reject message, the terminal detects that the routing area update request message is sent to the WCDMA network, and determines that the CSFB fallback result is a fallback failure.
  • the device further includes:
  • An attaching unit configured to perform the CSFB process according to the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, where the terminal sends the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information. And the triggering the terminal to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries The preset CSFB optimization scheme performs indication information of the voice service.
  • the device further includes:
  • a parsing unit configured to trigger the terminal to receive the routing area update reject message, and parse the reject request cause value from the routing area update reject message;
  • the detecting unit is specifically configured to start detecting the voice call state when the reject request cause value is a preset value.
  • the computer storage medium provided by the embodiment of the present invention stores computer executable instructions, and when the computer executable instructions are executed by the processor, the method steps of the CSFB fallback result detecting method are implemented.
  • the embodiment of the invention provides a CSFB fallback result detecting method and device, and a storage medium.
  • the terminal In the process of performing CSFB based on the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform voice service, the terminal according to the WCDMA cell frequency point information
  • the target WCDMA cell sends a voice call request message, and the target WCDMA cell frequency information is carried in the redirect command sent by the LTE base station; when the voice call request message is successfully established, the terminal detects that the terminal receives the routing area update.
  • the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process.
  • the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.
  • FIG. 1 is a schematic flowchart 1 of a CSFB fallback result detecting method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart 2 of a CSFB fallback result detecting method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for detecting a fallback result of applying CSFB according to an embodiment of the present invention. intention;
  • FIG. 4 is a schematic diagram 1 of an emulation code according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram 2 of a simulation code according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram 1 of a CSFB fallback result detecting apparatus according to an embodiment of the present invention.
  • FIG. 7 is a second schematic structural diagram of a CSFB fallback result detecting apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of 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 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
  • each terminal manufacturer adopts Various optimization methods are used to improve the call experience.
  • To verify the rationality of the CSFB optimization scheme it is necessary to detect the CSFB process in the abnormal scenario in order to improve the CSFB optimization scheme in a targeted manner.
  • the CSFB fallback scheme adopts the 3GPP R8 redirection fallback scheme.
  • the problem of parameter configuration will probabilistically cause the CSFB process to be abnormal.
  • an embodiment of the present invention provides a method for detecting a CSFB fallback result in a scenario in which a terminal does not open a 3G data service and causes a terminal to perform routing area update in a target WCDMA cell PS (Packet Switch) domain.
  • WCDMA cell PS Packet Switch
  • the terminal in the process of performing CSFB based on indication information indicating that the terminal performs voice service by using a preset CSFB optimization scheme, the terminal sends a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information.
  • the target WCDMA cell frequency point information is carried in the redirection command sent by the LTE base station; when the voice call request message is successfully established, the terminal detects that the terminal receives the routing area update reject message and starts detecting the voice call state; When it is detected that the voice call state is the disconnected state, determining that the CSFB fallback result is a fallback failure; when detecting that the voice call state is the hold state, determining whether the terminal is preset after the voice call under the WCDMA network ends Return to the LTE network within the time limit to determine the CSFB fallback result.
  • the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process.
  • the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.
  • FIG. 1 is a schematic flowchart of a CSFB fallback result detecting method according to an embodiment of the present invention. As shown in FIG. 1, a CSFB fallback result detecting method includes the following steps:
  • the terminal performs the CSFB process according to the indication information that indicates that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal according to the target WCDMA cell frequency point information
  • the target WCDMA cell sends a voice call request message, and the target WCDMA cell frequency information is carried in the redirect command sent by the LTE base station;
  • the CSFB fallback result detecting device triggers the terminal to send an attach request message to the LTE base station, and receives an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message is carried. Instructing the terminal to use the preset CSFB optimization scheme to perform voice service indication information.
  • the voice call of the terminal under the WCDMA network is triggered when the target WCDMA cell frequency point information is accessed to the target WCDMA cell.
  • the indication information is carried in the attach accept message sent by the LTE base station to the terminal; the attach accept message is sent by the LTE base station after the terminal sends the attach request message to the LTE base station.
  • the control terminal when detecting that the terminal receives the paging message sent by the LTE base station, the control terminal performs a CSFB process based on the indication information, and in the process of performing the CSFB, the terminal receives the redirect command sent by the LTE base station.
  • the CSFB process is triggered when the terminal receives the paging message sent by the LTE base station.
  • the CSFB fallback result detection may be based on the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the CSFB process, and in the CSFB execution process, the terminal may according to the target WCDMA cell frequency point.
  • the information is sent to the target WCDMA cell to establish a voice call request message (which can be detected by the fallback result detection device of the CSFB), wherein the target WCDMA cell frequency point information is carried in the redirect command sent by the LTE base station.
  • the terminal is an MT, and the terminal is registered on the LTE cell, and the terminal sends the establishment of the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information as the implementation of the CS domain called procedure.
  • the called process of the CS domain can be as follows:
  • the RRC connection is established.
  • the RRC of the UE receives the request of the non-access stratum to send an RRC connection setup request message to the UTRAN, where the message includes the called UE number, service type, and the like.
  • the UTRAN allocates the radio resource according to the network condition and sends it to the UE in the RRC CONNECTION SETUP message.
  • the UE will configure the protocol layer parameters according to the message and return an acknowledgement message.
  • RRC connection establishment on the common channel and RRC connection establishment on the dedicated channel.
  • RRC connection establishment on the common channel
  • RRC connection establishment on the dedicated channel.
  • the difference between the two is that the transport channels used by the RRC connection are different, and thus the process of connection establishment is different.
  • the UE will send a service request to the CN.
  • the RRC of the UE sends an INITIAL DIRECT TRANSFER message, and the message includes the information of the non-access stratum (CM SERVICE REQUEST).
  • the RNC sends the INITIAL UE MESSAGE, and the non-access stratum message of the UE is transparently forwarded to the CN, and the Iu signaling connection is established at the same time as the message is sent.
  • the non-access stratum message transmission between the UE and the CN is performed using the DOWNLINK DIRECT TRANSFER and UPLINK DIRECT TRANSFER messages.
  • Authentication is a non-access stratum function that is transparently transmitted in UTRAN.
  • RAB Radio Access Bearer
  • the radio link reconfiguration process needs to be performed. If no radio link is established in the RRC connection, that is, when the RRC connection on the common channel is established. , the process of establishing a wireless link should be performed here.
  • an RRC Request request is initiated, and the network sends the CS.
  • the resource of the domain is CS RAB setup, and the voice call is established, that is, the process of the terminal transmitting the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information.
  • 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 by using an emulation method.
  • the staff does not need to go to the on-site detection, thereby reducing the personnel cost; on the other hand, the scene in the scene may also contain other factors, thereby affecting the detection result, so the simulation network of the embodiment of the present invention is adopted.
  • the CSFB anomaly scenario that occurs in the field network can be stably reproduced, and the influence of other factors on the detection result in the scenario described in the embodiment of the present invention can be eliminated.
  • the triggering terminal receives the routing area update reject message and starts detecting the voice call state.
  • the CSFB fallback detection device After the CSFB fallback detection device detects that the terminal sends a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information, the network responds to the voice call request message, and the CS domain resource is sent to perform CS RAB setup, thereby voice After the call setup is completed, the voice call link is successfully established.
  • the active result detecting device of the CSFB detects that the terminal receives the routing area update reject message, it can start detecting the voice call state.
  • the voice call state of the terminal under the WCDMA network in the simulated network environment is detected.
  • a method for detecting a CSFB fallback result in a scenario in which a terminal does not open a 3G data service and causes a terminal to update a routing area in a PS domain of a target WCDMA cell is rejected.
  • the CSFB fallback detection device triggers the network to simulate the PS domain access and sends a RAU reject (ie, a routing area update reject message) to the terminal to detect the CSFB fallback result, that is,
  • the CSFB fallback result detecting device triggers the terminal to receive the routing area update reject message.
  • the terminal cannot obtain the PS domain resource and fails to complete the flow of the subsequent RAU. Therefore, the CSFB fallback detection device can start detecting the voice call state to detect the CSFB fallback result.
  • the CSFB fallback result detecting device triggers the terminal to receive the routing area update reject message, and parses the reject request cause value from the routing area update reject message;
  • the request cause value is a preset value, the voice call state is detected.
  • the default value is: GPRS is not allowed, indicating that the 3G service data is not activated.
  • the voice call function can be normally used when the terminal does not open the 3G service data, it can be performed by monitoring the voice call state when the PS service fails. Further detection of the fallback results of CSFB.
  • ATTACH Establish a logical connection between the UE and the Serving GPRS Service Node (SGSN).
  • SGSN Serving GPRS Service Node
  • PDP Service Request and Packet Data Protocol activation.
  • the UE non-access stratum sends a service request and activates the PDP.
  • RAB Radio Access Bearer
  • RB radio bearer
  • the packet service of the WCDMA system is "real-time online", that is, the user and the network are always connected.
  • an ATTACH operation is performed to establish a logical connection with the SGSN.
  • the packet service data transmission is required, it is sufficient to directly activate the PDP.
  • the CN allocates a radio access bearer (RAB), because the GPRS is not allowed, the PS domain resource cannot be obtained.
  • RAB radio access bearer
  • the triggering terminal When the voice call request message is successfully established, the triggering terminal receives the routing area update reject message, and after detecting the voice call state, when the voice call state is detected as the disconnected state, the simulated 3G is not activated.
  • the implementation result of the service data scenario is inconsistent with the theory. That is to say, the terminal uses the preset CSFB optimization scheme to perform the CSFB process of the voice service indication information, which is problematic, and the CSFB fallback result detection device determines that the CSFB fallback result is If the fallback fails, then this default CSFB optimization scheme fails.
  • the trigger terminal When the voice call request message is successfully established, the trigger terminal receives the routing area update reject message, and after detecting the voice call state, when the voice call state is detected as the hold state, the simulated 3G service is not activated.
  • the preliminary implementation result of the data scenario is consistent with the theory, and then a further confirmation is made to detect whether the terminal returns to the LTE network within a preset time period after the end of the voice call in the WCDMA network to determine the CSFB fallback result, thereby determining Whether this preset CSFB optimization scheme is successful.
  • the preset duration can be set as needed, which is not limited in the embodiment of the present invention.
  • the related signaling can be used to detect whether the terminal's voice call in the WCDMA network is interrupted, and relevant Signaling to detect whether the terminal returns to the LTE network within a preset time period.
  • the terminal when the voice call state is detected as being in a hold state, after the voice call in the WCDMA network ends, the terminal returns to the LTE network within a preset time period, and determines that the CSFB fallback result is a fallback success, that is, The terminal uses the preset CSFB optimization scheme to perform the CSFB process for the voice service indication information.
  • the CSFB fallback result detection device determines that the CSFB fallback result is successful, and the preset CSFB optimization scheme is successful.
  • the terminal When it is detected that the voice call state is the hold state, after the voice call under the WCDMA network ends, the terminal does not return to the LTE network within the preset time period, and when detecting that the routing area update request message is continuously sent to the WCDMA network, It is determined that the CSFB fallback result is a fallback failure. That is to say, the terminal uses the preset CSFB optimization scheme to perform the voice service indication information to execute the CSFB process, which is problematic, and causes the CSFB fallback result detecting device to determine that the CSFB fallback result is a fallback failure. Then this default CSFB optimization solution is a failure.
  • the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process, and at the same time
  • the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.
  • a method for detecting a fallback result of a CSFB when a voice call link is successfully established in response to a voice call request message, after the trigger terminal receives the routing area update reject message,
  • the above method may further include: S105. as follows:
  • the trigger terminal When the voice call request message is successfully established, the trigger terminal receives the routing area update reject message, and detects that the routing area update request is continuously sent to the WCDMA network. The message determines that the CSFB fallback result is a fallback failure.
  • the CSFB fallback result detecting device triggers the terminal to receive the routing area update reject message, and parses the reject request cause value from the routing area update reject message;
  • the request cause value is a preset value, it is detected that the routing area update request message is continuously sent to the WCDMA network, and it is determined that the CSFB fallback result is a fallback failure.
  • the default value is: GPRS is not allowed, indicating that the 3G service data is not activated.
  • the terminal since the terminal does not send the routing area update request message to the WCDMA network again when the 3G service data is not enabled, when detecting that the routing area is continuously sent to the WCDMA network, when updating the request message, it is determined that the CSFB fallback result is a fallback failure, that is, the terminal uses the preset CSFB optimization scheme to perform the voice service indication information to perform the CSFB process, which is problematic, and causes the CSFB fallback result detecting device to determine the CSFB. The result of the fallback is a fallback failure, then this default CSFB optimization scheme fails.
  • the CSFB fallback result detecting device can detect the success or failure of the CSFB fallback result by detecting the terminal performing the CSFB process by using the preset CSFB optimization scheme to perform the voice service indication information. Whether the preset CSFB optimization scheme in the scenario where the 3G service data is not activated is correct (successful), that is, whether the preset CSFB optimization scheme adopted by the terminal is a reasonable CSFB fallback scheme, and at the same time, a CSFB optimization is realized. Whether the program is reasonable detection method.
  • the simulation method does not require the staff to go to the site, and other factors affecting the detection can be removed, thereby greatly reducing the personnel.
  • 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 through a simulation platform, including frequency division duplexing.
  • FDD frequency division duplexing.
  • LTE SIB LTE subcarrier frequency division duplexing-LTE cell
  • WCDMA 1 is configured as neighbor cell information
  • LTE neighbor cell information is configured in WCDMA SIB18.
  • the abnormal scenario of the application embodiment is that, in the scenario that the 3G service data is not enabled, the terminal can still complete the CSFB by using the known CS resources, thereby verifying the validity and rationality of the UE side call optimization scheme.
  • a method for detecting a fallback result of a CSFB provided by this application embodiment, as shown in FIG. 3, includes the following steps:
  • the UE is registered on the LTE cell, and performs 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 carries the instruction to indicate that the terminal adopts the preset CSFB optimization.
  • the scheme provides instructions for voice services.
  • S202 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.
  • 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 point information of the target WCDMA cell.
  • the base station sends an R8 redirection command (rrcConnectionRelease_R8(0)) to the UE, and implements a process for the terminal to send a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information.
  • the CSFB fallback result detecting device simulates that the 3G service data is not activated by the simulation platform, and the triggering terminal receives the routing area update reject message, and starts detecting the voice call state;
  • the terminal When it is detected that the voice call state is in the hold state, after the voice call in the WCDMA network ends, the terminal returns to the LTE network within a preset time period, and determines that the CSFB fallback result is a fallback success;
  • the terminal When it is detected that the voice call state is the hold state, after the voice call in the WCDMA network ends, the terminal does not return to the LTE network within a preset time period, and detects that the WCDMA is continued to be transmitted.
  • the network sends the routing area update request message, it is determined that the CSFB fallback result is a fallback failure;
  • the CSFB fallback result detecting device simulates that the 3G service data is not activated by the simulation platform, and the trigger terminal receives the routing area update rejection message, and detects that the transmission to the WCDMA network is continued.
  • the routing area update request message determines that the CSFB fallback result is a fallback failure.
  • the S203-S207 and the S208 and the S201-S202 respectively form two detection methods for detecting the fallback result of the CSDB, and the specific detection method is adopted, and the selection method can be selected according to the actual situation. No restrictions.
  • the UE when the UE ends the call on the WCDMA network, the UE should quickly return to the LTE network.
  • the UE may attempt to perform a Routing Area Update (RAU) process on the WCDMA network.
  • RAU Routing Area Update
  • the embodiment of the present invention further provides a CSFB fallback result detecting apparatus 1.
  • the apparatus includes:
  • the voice call unit 10 is configured to perform the CSFB process according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal sends the target to the target WCDMA cell according to the target wideband code division multiple access WCDMA cell frequency point information.
  • a voice call request message where the target WCDMA cell frequency point information is carried in a redirect command sent by the LTE base station;
  • the detecting unit 11 is configured to: when the voice call link is successfully established in response to the voice call request message, detecting that the terminal receives the routing area update reject message, and starts detecting the voice call state;
  • the determining unit 12 is configured to, when detecting that the voice call state is in an off state, Determining the fallback result of the CSFB is a fallback failure; and when detecting that the voice call state is a hold state, determining whether the terminal returns to the LTE network within a preset time period after the voice call under the WCDMA network ends Determine the fallback result of the CSFB.
  • the device further includes:
  • the determining unit 12 is further configured to determine, after the end of the voice call in the WCDMA network, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, When the terminal returns to the LTE network within the preset duration, it is determined that the CSFB fallback result is a fallback success.
  • the device further includes:
  • the determining unit 12 is further configured to determine, after the end of the voice call in the WCDMA network, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, When the terminal does not return to the LTE network within the preset duration, and detects that the routing area update request message is sent to the WCDMA network, it is determined that the CSFB fallback result is a fallback failure.
  • the device further includes:
  • the determining unit 12 is further configured to: after receiving the routing area update reject message, the terminal detects that the routing area update request message is sent to the WCDMA network, and determines that the CSFB fallback result is a fallback failure.
  • the device further includes:
  • the attaching unit 13 is configured to perform the CSFB process according to the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, and the terminal sends the establish voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information.
  • the terminal Before the terminal is configured to send an attach request message to the LTE base station, and receive an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message is used to indicate that the terminal adopts the
  • the preset CSFB optimization scheme is used to indicate the voice service.
  • the device further includes:
  • the parsing unit 14 is configured to trigger the terminal to receive the routing area update reject message, and parse the reject request cause value from the routing area update reject message;
  • the detecting unit 11 is specifically configured to start detecting the voice call state when the reject request cause value is a preset value.
  • the detecting unit 11, the determining unit 12, the parsing unit 14, the voice talk unit 10, and the attaching unit 13 may be implemented by the processor 15 in the fallback result detecting device of the CSFB.
  • each unit in the fallback result detecting device of the CSFB is provided.
  • the embodiment of the present invention further provides a CSFB fallback result detecting device.
  • the CSFB is The fallback result detecting apparatus includes a processor 15 and a storage medium 16 configured to store a computer program executable on the processor 15,
  • the processor 15 is configured to execute the step of the CSFB fallback result detecting method when the computer program stored in the storage medium 16 is executed.
  • the bus system 17 is used to implement connection communication between these components.
  • the bus system 17 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • various buses are labeled as the bus system 17 in FIG.
  • the CSFB fallback result detection apparatus when the CSFB fallback result detection is performed, only the division of each of the above program modules is illustrated. In actual application, the above processing may be allocated as needed. Different program modules are completed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above.
  • the CSFB fallback result detecting device provided by the foregoing embodiment is the same as the CSFB fallback result detecting method embodiment. The specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed by the processor, the method steps of the CSFB fallback result detecting method are implemented.
  • 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. It can also be implemented in the form of hardware plus software functional units.
  • the embodiment of the invention provides a CSFB fallback result detecting method and device, and a storage medium.
  • the terminal performs the CSFB process according to the target WCDMA cell frequency point information based on the instruction information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service.
  • the target WCDMA cell frequency point information is carried in the redirect command sent by the LTE base station; when the voice call request message is successfully established, the terminal detects that the terminal receives the routing area Updating the reject message, starting to detect the voice call state; determining that the CSFB fallback result is a fallback failure when detecting that the voice call state is the off state; determining that the voice call state is in the hold state when the voice call state is detected as being in the WCDMA network After the voice call ends, the terminal returns to the LTE network within a preset time period to determine the CSFB fallback result.
  • the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process.
  • the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de détection du résultat d'un repli par commutation de circuits (CSFB), et un support de stockage. Le procédé comprend les étapes suivantes : lors de l'exécution d'un CSFB sur la base d'informations d'indication indiquant qu'un terminal utilise un schéma de priorisation de CSFB prédéfini pour un service vocal, le terminal envoie un message de demande d'établissement d'appel vocal à une cellule d'accès multiple par répartition de code à large bande cible (WCDMA) d'après des informations de point de fréquence de la cellule WCDMA cible; lorsqu'une liaison d'appel vocal est établie avec succès en réponse au message de demande d'établissement d'appel vocal, détecter que le terminal reçoit un message de rejet de mise à jour de zone de routage, et initier la détection de l'état d'appel vocal; lorsqu'il est détecté que l'état d'appel vocal est un état déconnecté, déterminer que le CSFB a échoué; et lorsqu'il est détecté que l'état d'appel vocal est un état connecté, déterminer si le terminal doit retourner à un réseau LTE durant une période de temps prédéfinie après la fin de l'appel vocal dans un réseau WCDMA, de sorte à déterminer le résultat du CSFB.
PCT/CN2017/104867 2017-09-30 2017-09-30 Procédé et dispositif de détection de résultat de repli par commutation de circuits (csfb), et support de stockage WO2019061433A1 (fr)

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PCT/CN2017/104867 WO2019061433A1 (fr) 2017-09-30 2017-09-30 Procédé et dispositif de détection de résultat de repli par commutation de circuits (csfb), et support de stockage

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