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WO2019061433A1 - 一种csfb的回落结果检测方法及装置、存储介质 - Google Patents

一种csfb的回落结果检测方法及装置、存储介质 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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WO
WIPO (PCT)
Prior art keywords
csfb
voice call
terminal
fallback
wcdma
Prior art date
Application number
PCT/CN2017/104867
Other languages
English (en)
French (fr)
Inventor
曾元清
Original Assignee
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.)
Filing date
Publication date
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 PCT/CN2017/104867 priority Critical patent/WO2019061433A1/zh
Priority to CN201780001893.3A priority patent/CN108124511B/zh
Publication of WO2019061433A1 publication Critical patent/WO2019061433A1/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 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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Abstract

本发明公开了一种CSFB的回落结果检测方法及装置、存储介质，包括：在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息；当响应语音通话请求消息，成功建立语音通话链路时，检测到终端接收到路由区更新拒绝消息，开始检测语音通话状态；当检测到所述语音通话状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果。

Description

一种CSFB的回落结果检测方法及装置、存储介质 技术领域
本发明实施例涉及电路域回落(CSFB，Circuit Switched Fallback)技术领域，尤其涉及一种CSFB的回落结果检测方法及装置、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，本发明实施例期望提供一种CSFB的回落结果检测方法及装置、存储介质，实现了在CSFB过程中对回落结果的检测，从而确定通信方案，提升了实现CSFB过程的成功率。
本发明实施例的技术方案可以如下实现：
本发明实施例提供了一种CSFB的回落结果检测方法，所述方法包 括：
在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标宽带码分多址WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，所述目标WCDMA小区频点信息携带在长期演进LTE基站发送的重定向命令中；
当响应所述语音通话请求消息，成功建立语音通话链路时，检测到所述终端接收到路由区更新拒绝消息，开始检测语音通话状态；
当检测到所述语音通话状态为断开状态时，确定所述CSFB的回落结果为回落失败；
当检测到所述语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络，以确定所述CSFB的回落结果。
在本发明实施例中，所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，所述方法还包括：
当所述WCDMA网络下的语音通话结束后，所述终端在所述预设时长内返回所述LTE网络时，确定所述CSFB的回落结果为回落成功。
在本发明实施例中，所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，所述方法还包括：
当所述WCDMA网络下的语音通话结束后，所述终端未在所述预设时长内返回所述LTE网络，且检测到继续向所述WCDMA网络发送路由区更新请求消息时，确定所述CSFB的回落结果为回落失败。
在本发明实施例中，所述终端接收到路由区更新拒绝消息之后，所述方法还包括：
检测到继续向所述WCDMA网络发送路由区更新请求消息，确定所述CSFB的回落结果为回落失败。
在本发明实施例中，所述在基于指示终端采用预设的CSFB优化方 案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息之前，所述方法还包括：
触发所述终端向所述LTE基站发送附着请求消息，及接收所述LTE基站响应所述附着请求消息发送的附着接受消息，其中，所述附着接受消息携带用于指示所述终端采用所述预设的CSFB优化方案进行语音业务的指示信息。
在本发明实施例中，所述检测到终端接收到路由区更新拒绝消息，开始检测语音通话状态，包括：
触发所述终端接收到所述路由区更新拒绝消息，从所述路由区更新拒绝消息中解析出拒绝请求原因值；
当所述拒绝请求原因值为预设值时，开始检测所述语音通话状态。
本发明实施例提供的一种CSFB的回落结果检测装置，所述装置包括：
语音通话单元，配置为在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标宽带码分多址WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，所述目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；
检测单元，配置为当响应所述语音通话请求消息，成功建立语音通话链路时，检测到所述终端接收到路由区更新拒绝消息，开始检测语音通话状态；
确定单元，配置为当检测到所述语音通话状态为断开状态时，确定所述CSFB的回落结果为回落失败；以及当检测到所述语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络，以确定所述CSFB的回落结果。
在本发明实施例中，所述装置还包括：
所述确定单元，还配置为所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，当所述WCDMA网络下的语音通话结束后，所述终端在所述预设时长内返回所述LTE网络时，确定所述CSFB的回落结果为回落成功。
在本发明实施例中，所述装置还包括：
所述确定单元，还配置为所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，当所述WCDMA网络下的语音通话结束后，所述终端未在所述预设时长内返回所述LTE网络，且检测到继续向所述WCDMA网络发送路由区更新请求消息时，
确定所述CSFB的回落结果为回落失败。
在本发明实施例中，所述装置还包括：
所述确定单元，还配置为所述终端接收到路由区更新拒绝消息之后，检测到继续向所述WCDMA网络发送路由区更新请求消息，确定所述CSFB的回落结果为回落失败。
在本发明实施例中，所述装置还包括：
附着单元，配置为所述在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息之前，触发所述终端向所述LTE基站发送附着请求消息，及接收所述LTE基站响应所述附着请求消息发送的附着接受消息，其中，所述附着接受消息携带用于指示所述终端采用所述预设的CSFB优化方案进行语音业务的指示信息。
在本发明实施例中，所述装置还包括：
解析单元，配置为触发所述终端接收到所述路由区更新拒绝消息，从所述路由区更新拒绝消息中解析出拒绝请求原因值；
所述检测单元，具体配置为当所述拒绝请求原因值为预设值时，开始检测所述语音通话状态。
本发明实施例提供的一种计算机存储介质，其上存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现权上述CSFB的回落结果检测方法的方法步骤。
本发明实施例提供了一种CSFB的回落结果检测方法及装置、存储介质，在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，终端根据WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；当响应语音通话请求消息，成功建立语音通话链路时，检测到终端接收到路由区更新拒绝消息，开始检测语音通话状态；当检测到所述语音通话状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果。采用本发明实施例的技术方案，能够在没有开通3G数据服务的场景下检测出CSFB过程中的语音通话状态，从而最终确定出CSFB的回落结果，实现了在CSFB过程中对回落结果的检测，同时在后续进行CSFB的过程中，可以进一步完善优化方案来提高CSFB过程的成功率，以提升用户的呼叫体验。
附图说明
图1为本发明实施例提供的一种CSFB的回落结果检测方法的流程示意图一；
图2为本发明实施例提供的一种CSFB的回落结果检测方法的流程示意图二；
图3为本发明实施例提供的应用CSFB的回落结果检测方法的流程示 意图；
图4为本发明实施例提供的仿真代码的示意图一；
图5为本发明实施例提供的仿真代码的示意图二；
图6为本发明实施例提供的一种CSFB的回落结果检测装置的结构组成示意图一；
图7为本发明实施例提供的一种CSFB的回落结果检测装置的结构组成示意图二；
图8为本发明实施例提供的一种CSFB的回落结果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小区系统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/WCDMA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这种跨系统(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，因参数配置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在没有开通3G数据服务，使得终端在目标WCDMA小区PS(分组交换，Packet Switch)域的路由区更新被拒绝的场景下，CSFB回落结果的检测方法。
在本发明的各种实施例中，在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；当响应语音通话请求消息，成功建立语音通话链路时，检测到终端接收到路由区更新拒绝消息，开始检测语音通话状态；当检测到所述语音通话状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果。
采用本发明实施例的技术方案，能够在没有开通3G数据服务的场景下检测出CSFB过程中的语音通话状态，从而最终确定出CSFB的回落结果，实现了在CSFB过程中对回落结果的检测，同时在后续进行CSFB的过程中，可以进一步完善优化方案来提高CSFB过程的成功率，以提升用户的呼叫体验。
图1为本发明实施例提供的一种CSFB的回落结果检测方法的流程示意图，如图1所示，一种CSFB的回落结果检测方法包括以下步骤：
S101、在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，终端根据目标WCDMA小区频点信息向目 标WCDMA小区发送建立语音通话请求消息，目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；
需要说明的是，在本发明实施例中，CSFB的回落结果检测装置会触发终端向LTE基站发送附着请求消息，及接收LTE基站响应附着请求消息发送的附着接受消息，其中，附着接受消息携带用于指示终端采用预设的CSFB优化方案进行语音业务的指示信息。
这里，终端在WCDMA网络下的语音通话是基于目标WCDMA小区频点信息对目标WCDMA小区接入时触发的。
其中，指示信息携带在LTE基站向终端发送的附着接受消息中；附着接受消息是终端向LTE基站发送附着请求消息后LTE基站发送的。具体的，当检测到终端接收到LTE基站发送的寻呼消息时，控制终端基于指示信息执行CSFB过程，在执行CSFB过程中，终端接收到LTE基站发送的重定向命令。
CSFB过程是终端接收到LTE基站发送的寻呼消息时触发执行的。
这样，在本发明实施例中，CSFB的回落结果检测可以基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程，而在CSFB执行过程中，终端可以根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息(这可以由CSFB的回落结果检测装置检测出的)，其中，目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中的。
在本发明实施例中，终端为MT，该终端注册在LTE小区上，该终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息为CS域被呼叫流程的实现。
CS域的被呼叫流程可以如下：
1、触发MT CSFB流程，UE(终端)接收到LTE网络发送的寻呼信道上的PAGING TYPE 1消息，开始CSFB流程；
2、进行RRC连接的建立，首先由UE的RRC接收到非接入层的请求发送RRC连接建立请求消息给UTRAN，在该消息中包含被叫UE号码，业务类型等等。UTRAN接收到该消息后，根据网络情况分配无线资源，并在RRC CONNECTION SETUP消息中发送给UE，UE将根据消息配置各协议层参数，同时返回确认消息。
需要说明的是，RRC连接建立有两种情况：公共信道上的RRC连接建立和专用信道上的RRC连接建立。两者的区别在于RRC连接使用的传输信道不同，因而连接建立的流程有所区别。
3、Iu信令连接的建立。在RRC连接建立后，UE将向CN发送业务请求。此时UE的RRC发送INITIAL DIRECT TRANSFER消息，在该消息中包含非接入层的信息(CM SERVICE REQUEST)。RNC接收到该消息后，RNC的RANA发送INITIAL UE MESSAGE，将UE的非接入层消息透明转发给CN，在该消息发送的同时建立Iu信令连接。在Iu信令连接建立后，UE和CN之间的非接入层消息传输使用DOWNLINK DIRECT TRANSFER和UPLINK DIRECT TRANSFER消息进行。
4、鉴权。Iu信令连接建立后，CN需要对UE进行鉴权。鉴权是非接入层功能，在UTRAN中透明传输。
5、RAB的建立。UE业务请求被网络接收后，CN将根据业务情况分配无线接入承载(RAB)。同时在空中接口将建立相应的无线承载(RB)。
需要注意的是，若在RRC连接建立中建立了无线链路，则需要进行上述无线链路的重配置过程，若在RRC连接中没有建立无线链路，即建立了公共信道上的RRC连接时，则在此应进行无线链路建立的过程。
6、应答。此时UE将开始应答，进入通话状态。
需要说明的是，在本发明实施例中，在UE根据目标WCDMA小区频点信息回落到WCDMA小区后发起RRC Request请求，网络下发CS 域的资源进行CS RAB setup，语音通话建立完成，即实现终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息的过程。
需要说明的是，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。
S102、当响应语音通话请求消息，成功建立语音通话链路时，触发终端接收到路由区更新拒绝消息，开始检测语音通话状态；
当CSFB的回落结果检测装置检测到终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息之后，由于网络响应语音通话请求消息，下发CS域的资源进行CS RAB setup，从而语音通话建立完成，即成功建立语音通话链路，这时该CSFB的活络结果检测装置检测到终端接收到路由区更新拒绝消息的时候，可以开始检测语音通话状态。
基于此，在一些实施例中，检测位于仿真网络环境下的终端在WCDMA网络下的语音通话状态。
需要说明的是，在本发明实施例提供的是一种在没有开通3G数据服务，使得终端在目标WCDMA小区PS域的路由区更新被拒绝的场景下，CSFB回落结果的检测方法，因此，在检测到成功建立语音通话链路的时候，CSFB的回落结果检测装置触发网络模拟PS域接入时候下发RAU reject(即路由区更新拒绝消息)给终端，来进行CSFB的回落结果的检测，即CSFB的回落结果检测装置触发终端接收到路由区更新拒绝消息， 这就导致了终端无法获取PS域资源，未能完成后继RAU的流程，于是，该CSFB的回落结果检测装置可以开始检测语音通话状态，来检测CSFB的回落结果。
具体的，当响应语音通话请求消息，成功建立语音通话链路时，CSFB的回落结果检测装置触发终端接收到路由区更新拒绝消息，从路由区更新拒绝消息中解析出拒绝请求原因值；当拒绝请求原因值为预设值时，开始检测语音通话状态。
这里，预设值为：GPRS is not allowed，表征没有开通3G服务数据。
可以理解的是，在本发明实施例中，由于终端在没有开通3G服务数据的时候，语音通话功能是可以正常使用的，因此，可以通过在PS业务失败的时候，通过监测语音通话状态来进行进一步的CSFB的回落结果的检测。
需要说明的是，PS域的被呼叫流程可以为：
1、触发MT CSFB流程，UE(终端)接收到LTE网络发送的寻呼信道上的PAGING TYPE 1消息，开始CSFB流程；
2、建立RRC连接。
3、Iu信令连接的建立。
4、UE的鉴权和安全模式控制。
5、ATTACH。建立UE和服务GPRS业务节点(SGSN)之间的逻辑连接。
6、业务请求及分组数据协议(PDP)激活。UE非接入层发送业务请求，并激活PDP。
7、RAB的建立。UE业务请求被网络接收后，CN将分配无线接入承载(RAB)。在空中接口将建立相应的无线承载(RB)。
8、应答。CN响应。当UE接收到PDP RESPONSE消息，此时可以发送接收IP数据包。
需要说明的是，WCDMA系统的分组业务是“实时在线”的，就是说用户和网络始终连接。通常在用户终端开启时，便进行ATTACH操作，与SGSN建立逻辑连接。在需要进行分组业务数据传输时，直接激活PDP就可以了。
在本发明实施例中，在RAB的建立时，UE业务请求被网络接收后，CN将分配无线接入承载(RAB)，就是因为GPRS is not allowed，获取不到PS域资源。
S103、当检测到语音通话状态为断开状态时，确定CSFB的回落结果为回落失败；
当响应语音通话请求消息，成功建立语音通话链路时，触发终端接收到路由区更新拒绝消息，开始检测语音通话状态之后，当检测到语音通话状态为断开状态时，表征模拟的没有开通3G服务数据的场景的实现结果与理论不一致，也就是说，终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程是有问题的，造成CSFB的回落结果检测装置确定CSFB的回落结果为回落失败，那么这个预设的CSFB优化方案是失败的。
S104、当检测到语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果。
当响应语音通话请求消息，成功建立语音通话链路时，触发终端接收到路由区更新拒绝消息，开始检测语音通话状态之后，当检测到语音通话状态为保持状态时，表征模拟的没有开通3G服务数据的场景的初步实现结果与理论一致，再进行更近一步的确认，检测在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果，从而确定这个预设的CSFB优化方案是否成功。
其中，预设时长可以根据需要进行设置，本发明实施例不作限制。
这里，实际应用时，可以通过相关的信令来检测终端是否请求道WCDMA网络的资源并建立语音通话；相应地，可以通过相关的信令来检测终端在WCDMA网络的语音通话是否中断，通过相关的信令来检测终端是否在预设时长内返回LTE网络。
具体的，(1)、当检测到语音通话状态为保持状态，在WCDMA网络下的语音通话结束后，终端在预设时长内返回LTE网络时，确定CSFB的回落结果为回落成功，也就是说，终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程是没有问题的，CSFB的回落结果检测装置确定CSFB的回落结果为回落成功，那么这个预设的CSFB优化方案是成功的。(2)、当检测到语音通话状态为保持状态，在WCDMA网络下的语音通话结束后，终端未在预设时长内返回LTE网络，且检测到继续向WCDMA网络发送路由区更新请求消息时，确定CSFB的回落结果为回落失败，也就是说，终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程是有问题的，造成CSFB的回落结果检测装置确定CSFB的回落结果为回落失败，那么这个预设的CSFB优化方案是失败的。
可以理解的是，能够在没有开通3G数据服务的场景下检测出CSFB过程中的语音通话状态，从而最终确定出CSFB的回落结果，实现了在CSFB过程中对回落结果的检测，同时在后续进行CSFB的过程中，可以进一步完善优化方案来提高CSFB过程的成功率，以提升用户的呼叫体验。
进一步地，如图2所示，本发明实施例提供的一种CSFB的回落结果检测方法，当响应语音通话请求消息，成功建立语音通话链路时，触发终端接收到路由区更新拒绝消息之后，上述方法还可以包括：S105。如下：
S105、检测到继续向WCDMA网络发送路由区更新请求消息，确定CSFB的回落结果为回落失败。
当响应语音通话请求消息，成功建立语音通话链路时，触发终端接收到路由区更新拒绝消息，检测到继续向WCDMA网络发送路由区更新请求 消息，确定CSFB的回落结果为回落失败。
具体的，当响应语音通话请求消息，成功建立语音通话链路时，CSFB的回落结果检测装置触发终端接收到路由区更新拒绝消息，从路由区更新拒绝消息中解析出拒绝请求原因值；当拒绝请求原因值为预设值时，检测到继续向WCDMA网络发送路由区更新请求消息，确定CSFB的回落结果为回落失败。
这里，预设值为：GPRS is not allowed，表征没有开通3G服务数据。
可以理解的是，在本发明实施例中，由于终端在没有开通3G服务数据的时候，是不会再次向WCDMA网络发送路由区更新请求消息的，因此，当检测到继续向WCDMA网络发送路由区更新请求消息时，确定CSFB的回落结果为回落失败，也就是说，终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程是有问题的，造成CSFB的回落结果检测装置确定CSFB的回落结果为回落失败，那么这个预设的CSFB优化方案是失败的。
可以理解的是，在本发明实施例中，CSFB的回落结果检测装置是可以通过检测终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，CSFB的回落结果的成败，来检测出在没有开通3G服务数据的场景中预设的CSFB优化方案是否正确(成功)的，即代表终端采用的预设的CSFB优化方案为是否为合理的CSFB回落方案，同时实现了一种CSFB优化方案是否合理的检测方法。
另外，检测位于仿真网络环境下的终端在WCDMA网络下的语音通话状态和各种请求消息，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，包括频分双工 (FDD)-LTE小区、WCDMA小区；其中，LTE SIB中配置WCDMA 1为邻区小区信息，在WCDMA SIB18中配置LTE邻区小区信息。
本应用实施例的异常场景是：在没有开通3G服务数据的场景中，终端仍然能利用已知CS资源完成CSFB，从而验证UE侧通话优化方案的有效性和合理性。
本应用实施例提供的一种CSFB的回落结果的检测方法，如图3所示，包括以下步骤：
S201、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系统(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LTE基站发送的附着接受消息(Attach Accept)，其中，附着接受消息携带用于指示终端采用预设的CSFB优化方案进行语音业务的指示信息。图4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。
S202、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)。
UE收到LTE基站发送的LTE_RRCConnectionRelease信令，即重定向命令。重定向命令中携带目标WCDMA小区的频点信息。如图5所示，基站下发R8重定向命令(rrcConnectionRelease_R8(0))给UE，实现终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息的过程。
S203、当响应语音通话请求消息，成功建立语音通话链路时，CSFB的回落结果检测装置通过仿真平台模拟没有开通3G服务数据，触发终端接收到路由区更新拒绝消息，开始检测语音通话状态；
S204、当检测到语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果；
S205、当检测到语音通话状态为保持状态，在WCDMA网络下的语音通话结束后，终端在预设时长内返回LTE网络时，确定CSFB的回落结果为回落成功；
S206、当检测到语音通话状态为保持状态，在WCDMA网络下的语音通话结束后，终端未在预设时长内返回LTE网络，且检测到继续向WCDMA 网络发送路由区更新请求消息时，确定CSFB的回落结果为回落失败；
S207、当检测到语音通话状态为断开状态时，确定CSFB的回落结果为回落失败；
S208、当响应语音通话请求消息，成功建立语音通话链路时，CSFB的回落结果检测装置通过仿真平台模拟没有开通3G服务数据，触发终端接收到路由区更新拒绝消息，检测到继续向WCDMA网络发送路由区更新请求消息，确定CSFB的回落结果为回落失败。
需要说明的是，S203-S207与S208分别与S201-S202构成了两种检测CSDB的回落结果的检测方法，具体采用哪种实现检测方法，还是都采用可以根据实际情况进行选择，本发明实施例不作限制。
其中，依据预设CSFB优化方案，当UE在WCDMA网络通话结束后，UE应当迅速返回LTE网络。
当UE不能在预设时长内返回LTE网络，此时UE可能是尝试在WCDMA网络进行路由区更新(RAU，Route Area Update)流程，此时说明CSFB的优化方案失败。
为实现本发明实施例的方法，本发明实施例还提供了一种CSFB的回落结果检测装置1，如图6所示，所述装置包括：
语音通话单元10，配置为在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标宽带码分多址WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，所述目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；
检测单元11，配置为当响应所述语音通话请求消息，成功建立语音通话链路时，检测到所述终端接收到路由区更新拒绝消息，开始检测语音通话状态；
确定单元12，配置为当检测到所述语音通话状态为断开状态时，确 定所述CSFB的回落结果为回落失败；以及当检测到所述语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络，以确定所述CSFB的回落结果。
在本发明实施例中，所述装置还包括：
所述确定单元12，还配置为所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，当所述WCDMA网络下的语音通话结束后，所述终端在所述预设时长内返回所述LTE网络时，确定所述CSFB的回落结果为回落成功。
在本发明实施例中，所述装置还包括：
所述确定单元12，还配置为所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，当所述WCDMA网络下的语音通话结束后，所述终端未在所述预设时长内返回所述LTE网络，且检测到继续向所述WCDMA网络发送路由区更新请求消息时，确定所述CSFB的回落结果为回落失败。
在本发明实施例中，所述装置还包括：
所述确定单元12，还配置为所述终端接收到路由区更新拒绝消息之后，检测到继续向所述WCDMA网络发送路由区更新请求消息，确定所述CSFB的回落结果为回落失败。
基于图6，如图7所示，在本发明实施例中，所述装置还包括：
附着单元13，配置为所述在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息之前，触发所述终端向所述LTE基站发送附着请求消息，及接收所述LTE基站响应所述附着请求消息发送的附着接受消息，其中，所述附着接受消息携带用于指示所述终端采用所述预设的CSFB优化方案进行语音业务的指示信息。
在本发明实施例中，所述装置还包括：
解析单元14，配置为触发所述终端接收到所述路由区更新拒绝消息，从所述路由区更新拒绝消息中解析出拒绝请求原因值；
所述检测单元11，具体配置为当所述拒绝请求原因值为预设值时，开始检测所述语音通话状态。
实际应用时，所述检测单元11、确定单元12、所述解析单元14、所述语音通话单元10和所述附着单元13可由CSFB的回落结果检测装置中的处理器15实现。
基于上述CSFB的回落结果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，本发明实施例还提供了一种CSFB的回落结果检测装置，如图8所示，所述CSFB的回落结果检测装置包括：处理器15和配置为存储能够在处理器15上运行的计算机程序的存储介质16，
其中，所述处理器15配置为运行所述存储介质16存储的计算机程序时，执行上述CSFB的回落结果检测方法的步骤。
当然，实际应用时，如图8所示，CSFB的回落结果检测装置中的各个组件通过总线系统17耦合在一起。可理解，总线系统17用于实现这些组件之间的连接通信。总线系统17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8中将各种总线都标为总线系统17。
需要说明的是，上述实施例提供的CSFB的回落结果检测装置在进行CSFB的回落结果检测时，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CSFB的回落结果检测装置与CSFB的回落结果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。
本发明实施例提供的一种计算机存储介质，其上存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现权上述CSFB的回落结果检测方法的方法步骤。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系统，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
本发明实施例提供了一种CSFB的回落结果检测方法及装置、存储介质，在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；当响应语音通话请求消息，成功建立语音通话链路时，检测到终端接收到路由区更新拒绝消息，开始检测语音通话状态；当检测到所述语音通话状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果。
采用本发明实施例的技术方案，能够在没有开通3G数据服务的场景下检测出CSFB过程中的语音通话状态，从而最终确定出CSFB的回落结果，实现了在CSFB过程中对回落结果的检测，同时在后续进行CSFB的过程中，可以进一步完善优化方案来提高CSFB过程的成功率，以提升用户的呼叫体验。

Claims (13)

  1. 一种电路域回落CSFB的回落结果检测方法，所述方法包括：
    在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标宽带码分多址WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，所述目标WCDMA小区频点信息携带在长期演进LTE基站发送的重定向命令中；
    当响应所述语音通话请求消息，成功建立语音通话链路时，检测到所述终端接收到路由区更新拒绝消息，开始检测语音通话状态；
    当检测到所述语音通话状态为断开状态时，确定所述CSFB的回落结果为回落失败；
    当检测到所述语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络，以确定所述CSFB的回落结果。
  2. 根据权利要求1所述的方法，其中，所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，所述方法还包括：
    当所述WCDMA网络下的语音通话结束后，所述终端在所述预设时长内返回所述LTE网络时，确定所述CSFB的回落结果为回落成功。
  3. 根据权利要求1所述的方法，其中，所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，所述方法还包括：
    当所述WCDMA网络下的语音通话结束后，所述终端未在所述预设时长内返回所述LTE网络，且检测到继续向所述WCDMA网络发送路由区更新请求消息时，确定所述CSFB的回落结果为回落失败。
  4. 根据权利要求1所述的方法，其中，所述终端接收到路由区更新 拒绝消息之后，所述方法还包括：
    检测到继续向所述WCDMA网络发送路由区更新请求消息，确定所述CSFB的回落结果为回落失败。
  5. 根据权利要求1所述的方法，其中，所述在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息之前，所述方法还包括：
    触发所述终端向所述LTE基站发送附着请求消息，及接收所述LTE基站响应所述附着请求消息发送的附着接受消息，其中，所述附着接受消息携带用于指示所述终端采用所述预设的CSFB优化方案进行语音业务的指示信息。
  6. 根据权利要求1至5任一项所述的方法，其中，所述检测到终端接收到路由区更新拒绝消息，开始检测语音通话状态，包括：
    触发所述终端接收到所述路由区更新拒绝消息，从所述路由区更新拒绝消息中解析出拒绝请求原因值；
    当所述拒绝请求原因值为预设值时，开始检测所述语音通话状态。
  7. 一种CSFB的回落结果检测装置，所述装置包括：
    语音通话单元，配置为在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标宽带码分多址WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息，所述目标WCDMA小区频点信息携带在LTE基站发送的重定向命令中；
    检测单元，配置为当响应所述语音通话请求消息，成功建立语音通话链路时，检测到所述终端接收到路由区更新拒绝消息，开始检测语音通话状态；
    确定单元，配置为当检测到所述语音通话状态为断开状态时，确定 所述CSFB的回落结果为回落失败；以及当检测到所述语音通话状态为保持状态时，确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络，以确定所述CSFB的回落结果。
  8. 根据权利要求7所述的装置，其中，所述装置还包括：
    所述确定单元，还配置为所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，当所述WCDMA网络下的语音通话结束后，所述终端在所述预设时长内返回所述LTE网络时，确定所述CSFB的回落结果为回落成功。
  9. 根据权利要求7所述的装置，其中，所述装置还包括：
    所述确定单元，还配置为所述确定在WCDMA网络下的语音通话结束后，所述终端是否在预设时长内返回LTE网络之后，当所述WCDMA网络下的语音通话结束后，所述终端未在所述预设时长内返回所述LTE网络，且检测到继续向所述WCDMA网络发送路由区更新请求消息时，确定所述CSFB的回落结果为回落失败。
  10. 根据权利要求7所述的装置，其中，所述装置还包括：
    所述确定单元，还配置为所述终端接收到路由区更新拒绝消息之后，检测到继续向所述WCDMA网络发送路由区更新请求消息，确定所述CSFB的回落结果为回落失败。
  11. 根据权利要求7所述的装置，其中，所述装置还包括：
    附着单元，配置为所述在基于指示终端采用预设的CSFB优化方案进行语音业务的指示信息执行CSFB过程中，所述终端根据目标WCDMA小区频点信息向目标WCDMA小区发送建立语音通话请求消息之前，触发所述终端向所述LTE基站发送附着请求消息，及接收所述LTE基站响应所述附着请求消息发送的附着接受消息，其中，所述附着接受消息携带用于指示所述终端采用所述预设的CSFB优化方案进行语音业务的指示信息。
  12. 根据权利要求7至11任一项所述的装置，其中，所述装置还包括：
    解析单元，配置为触发所述终端接收到所述路由区更新拒绝消息，从所述路由区更新拒绝消息中解析出拒绝请求原因值；
    所述检测单元，具体配置为当所述拒绝请求原因值为预设值时，开始检测所述语音通话状态。
  13. 一种计算机存储介质，其上存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现权利要求1-6任一项所述的方法步骤。
PCT/CN2017/104867 2017-09-30 2017-09-30 一种csfb的回落结果检测方法及装置、存储介质 WO2019061433A1 (zh)

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