WO2019061428A1 - 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
WO2019061428A1
WO2019061428A1 PCT/CN2017/104851 CN2017104851W WO2019061428A1 WO 2019061428 A1 WO2019061428 A1 WO 2019061428A1 CN 2017104851 W CN2017104851 W CN 2017104851W WO 2019061428 A1 WO2019061428 A1 WO 2019061428A1
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Prior art keywords
csfb
voice communication
terminal
detecting
target
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PCT/CN2017/104851
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English (en)
French (fr)
Inventor
曾元清
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深圳市云中飞网络科技有限公司
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Priority to CN201780001906.7A priority Critical patent/CN109792647B/zh
Priority to PCT/CN2017/104851 priority patent/WO2019061428A1/zh
Publication of WO2019061428A1 publication Critical patent/WO2019061428A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

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 call during the actual call. Success rate.
  • a method for detecting a fallback result of a CSAH falling back in a circuit domain includes:
  • the terminal In the process of performing CSFB based on the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, detecting that the terminal sends a voice communication request message to the target TDSCDMA cell according to the target time division synchronization code division multiple access TDSCDMA cell frequency point information. And the target TDSCDMA 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 When it is detected that the voice communication state is the hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice communication under the GSM network ends, to determine a fall result of the CSFB.
  • the method further includes:
  • the terminal After detecting the end of the voice communication in the GSM network, 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 end of the voice communication in the GSM network, the terminal does not return to the LTE network within the preset time period, and determines that the CSFB fallback result is a fallback failure.
  • 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 method further includes:
  • Detecting that the terminal performs measurement on the TDSCDMA cell determines the target TDSCDMA cell, and reports the target TDSCDMA cell to the LTE base station.
  • a CSFB fallback result detecting apparatus provided by an embodiment of the present invention, the apparatus includes:
  • the voice communication unit is configured to detect, according to the target time-division synchronization code division multiple access TDSCDMA cell frequency point information, to the target TDSCDMA cell, in the process of performing CSFB based on the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service.
  • LTE Long Term Evolution
  • a detecting unit configured to: when triggering the voice communication request message, fail to establish a voice communication link with the target TDSCDMA cell, detecting whether the terminal sends a voice communication request to the GSM cell; and when the terminal is When the GSM cell sends a voice communication request and successfully establishes a voice call link, detecting a voice communication state under the GSM network;
  • a determining unit configured to determine that the fallback result of the CSFB is a fallback failure when detecting that the voice communication state is an off state; and determine that the GSM network is determined when the voice communication state is a hold state After the end of the voice communication, whether the terminal returns to the LTE network within a preset time period to determine the fallback result of the CSFB.
  • the device further includes:
  • the determining unit is further configured to: after determining whether the terminal returns to the LTE network within a preset duration after the end of the voice communication in the GSM network, detecting that the voice communication under the GSM network ends The terminal returns to the LTE network within the preset duration, and determines that the CSFB fallback result is a fallback success.
  • the device further includes:
  • the determining unit is further configured to: after determining whether the terminal returns to the LTE network within a preset duration after the end of the voice communication in the GSM network, detecting that the voice communication under the GSM network ends The terminal does not return to the LTE network within the preset duration, and determines that the CSFB fallback result is a fallback failure.
  • the device further includes:
  • the attaching unit is configured to: when the CSFB is executed according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform voice service, detecting that the terminal sends a voice communication request to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information.
  • 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 preset CSFB optimization scheme performs indication information of the voice service.
  • the device further includes:
  • the detecting unit is further configured to: after receiving the attach accept message sent by the LTE base station in response to the attach request message, and before performing the CSFB process based on the indication information indicating that the terminal performs voice service by using a preset CSFB optimization scheme And detecting, by the terminal, the TDSCDMA cell, determining the target TDSCDMA cell, and reporting the target TDSCDMA cell to the LTE base station.
  • the computer storage medium provided by the embodiment of the present invention has stored thereon computer executable instructions, and when the computer executable instructions are executed by the processor, the CSFB fallback result is implemented. Method steps of the detection method.
  • the embodiment of the present invention provides a CSFB fallback result detecting method and device, and a storage medium.
  • the terminal detects the target TDSCDMA cell frequency according to the target.
  • the point information is sent to the target TDSCDMA cell to establish a voice communication request message, and the target TDSCDMA cell frequency point information is carried in the redirect command sent by the LTE base station; when the response voice communication request message is triggered, and the voice communication link is established with the target TDSCDMA cell, Detecting whether the terminal sends a voice communication request to the GSM cell; when the terminal sends a voice communication request to the GSM cell and successfully establishes a voice call link, detecting a voice communication state under the GSM network;
  • the voice call state in the CSFB process in the CSFB process can be detected in the scenario where the TDSCDMA cell signal disappears, thereby finally determining the CSFB fallback result, and realizing the fallback in the CSFB process.
  • the detection of the results, and in the subsequent process of CSFB, 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 schematic flowchart of a method for detecting a fallback result of applying CSFB according to an embodiment of the present invention
  • 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/TDSCDMA cell. Access; 3) The UE reads the GSM cell/TDSCDMA cell system broadcast message and establishes a voice call.
  • the configuration of the original network deployed on the base station signaling side is not updated in real time, and the configuration that the network sends to the UE occurs.
  • the information is inconsistent with the actual deployment, which leads to various abnormalities in the inter-system (InterRAT) voice call of CSFB, such as failure to connect, repeated connection failure, and the like.
  • InterRAT inter-system
  • the CSFB fallback scheme 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 where a signal in a TDSCDMA cell disappears and the terminal establishes voice communication in the target TDSCDMA cell.
  • the terminal in the process of performing CSFB based on the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, detecting that the terminal sends a voice communication request message to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information,
  • the target TDSCDMA cell frequency point information is carried in the redirection command sent by the LTE base station; when the response to the voice communication request message is triggered, and the voice communication link with the target TDSCDMA cell fails to be established, the terminal is detected whether to send a voice communication request to the GSM cell;
  • the voice communication request is sent to the GSM cell and the voice call link is successfully established, the voice communication state under the GSM network is detected; when the voice communication state is detected as the disconnected state, it is determined that the CSFB fallback result is a fallback failure; when it is detected;
  • the voice communication state is in the hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice communication under
  • the voice call state in the CSFB process in the CSFB process can be detected in the scenario where the TDSCDMA cell signal disappears, thereby finally determining the CSFB fallback result, and realizing the fallback in the CSFB process.
  • the detection of the results, and in the subsequent process of CSFB, 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 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 TDSCDMA network is triggered when the target TDSCDMA cell frequency point information is accessed to the target TDSCDMA 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 TDSCDMA cell frequency point.
  • the information is sent to the target TDSCDMA cell to establish a voice communication request message (which can be detected by the fallback result detecting means of the CSFB), wherein the target TDSCDMA 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 a voice communication request message to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information, which may be implemented by the CS domain called procedure. among them,
  • 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.
  • the RRC Request is initiated, and the network sends the CS.
  • the resources of the domain are CS RAB setup, and the voice call establishment is completed, that is, the process of the terminal transmitting the voice communication request message to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information.
  • the CSFB fallback detection device After the CSFB fallback detection device detects that the terminal sends a establish voice communication request message to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information, since the network starts to respond to the voice communication request message, the following CS domain resources are sent to the CS RAB setup. Thus, the voice communication channel is established, that is, the voice communication link is successfully established. However, in the embodiment of the present invention, when the response to the voice communication request message is triggered, and the voice communication link with the target TDSCDMA cell fails, that is, when the voice communication of the CS domain fails to be established, the CSFB fallback result detecting device starts detecting whether the terminal is detected. A voice communication request is sent to the GSM cell.
  • the GSM cell is used as the cell for implementing CS voice, wherein the TDSCDMA cell is configured as the neighbor cell information in the LTE SIB, the GSM cell is configured as the neighboring cell, and the LTE neighboring cell is configured in the TDSCDMA SIB18. Cell information.
  • the CSFB process is then executed based on the constructed network environment.
  • both the TDSCDMA cell and the GSM cell are configured as the neighboring cells of the LTE network, if the LTE network falls back to the TDSCDMA cell, if the GSM cell fails to fall back successfully, the characterization is performed.
  • the CSFB optimization scheme is also successful. Therefore, when the response voice communication request message is triggered and the voice communication link with the target TDSCDMA cell fails, the CSFB fallback result detecting apparatus can detect whether the terminal sends a voice communication request to the GSM cell. The result of the fallback in the GSM cell is judged to determine whether the fall of the entire CSFB is successful.
  • the terminal located in the simulated network environment triggers a voice communication request message at the TDSCDMA network layer, and fails to establish a voice communication link with the target TDSCDMA cell, so as to detect CSFB under the GSM network. The result of the fall.
  • the terminal sends a voice communication request message to the TDSCDMA cell according to the target TDSCDMA cell frequency point information
  • the CSFB fallback result detecting device triggers the network analog response voice communication request message, and fails to establish a voice call link with the target TDSCDMA cell to perform CSFB.
  • the detection of the fallback result that is, the CSFB fallback result detecting device triggers the network simulation target TDSCDMA cell signal to disappear, and the UE cannot establish a connection, so the CSFB fallback result detecting device can start detecting whether the terminal sends a voice communication request to the GSM cell, Further detection of the CSFB fall result.
  • the CSFB fallback result detecting device detects whether the terminal sends a voice communication request to the GSM cell.
  • there may be two types of detection results and a CSFB fallback result detecting device detects that the terminal does not send a voice to the GSM cell.
  • a communication request a method for the terminal to send a voice communication request to the GSM cell; at this time, if the CSFB fallback result detecting device detects that the terminal does not send a voice communication request to the GSM cell, the result of the CSFB fallback is a fallback failure;
  • the GSM cell sends a voice communication request and successfully establishes a voice call link, it needs to perform further judgment by detecting the voice communication state under the GSM network.
  • the access request cause value (cause) is parsed from the voice communication request; whether the access request cause value carried by the voice communication request is a preset value; when the access request is received When the cause value is the preset value (ie, the correct access request cause value), the control terminal continues to execute the CSFB process.
  • the CSFB optimization scheme may be a reasonable CSFB fallback scheme.
  • the terminal does not send a voice communication request to the GSM cell, That is, the CSFB fallback result is a fallback failure, and the preset CSFB optimization scheme used by the terminal is an unreasonable CSFB fallback scheme.
  • the fallback failure situation includes the following two types: when the access request cause value is not the preset value, it is determined that the CSFB fallback result is a fallback failure; when the voice call link is not successfully established, the CSFB fallback result is determined. Failed to fall back. At this time, the preset CSFB optimization scheme adopted by the terminal is an unreasonable CSFB fallback scheme.
  • the simulation platform starts to detect whether the terminal initiates a voice communication request at the GSM layer.
  • a timer is first set to detect whether the terminal sends a voice communication request to the GSM cell before the timer expires.
  • the role of the timer is to prevent the detection time from being too long.
  • the voice communication state may include: a voice communication disconnection state (off state) and a voice communication hold state (hold state); when a voice communication state is detected In the disconnected state, it is characterized that the normal voice communication cannot be performed under the GSM network. Therefore, the fallback result detecting device of the CSFB determines that the CSFB fallback result is a fallback failure. 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 detecting device determines that the CSFB fallback result is a fallback failure, then the preset CSFB optimization scheme It is a failure.
  • the voice communication state may include: a voice communication disconnection state (off state) and a voice communication hold state (hold state); when a voice communication state is detected
  • a voice communication state is detected
  • normal voice communication can be performed, and the initial implementation result of the scene in which the simulated TDSCDMA cell has no signal is consistent with the theory, and then further confirmation is performed to detect whether the terminal is preset after the end of the voice call under the GSM network.
  • the LTE network for the duration to determine the CSFB fallback result to determine whether the default 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 may be used to detect whether the terminal requests the resources of the GSM network and establish a voice call; accordingly, the related signaling may be used to detect whether the terminal's voice call on the GSM network is interrupted, and relevant Signaling to detect whether the terminal returns to the LTE network within a preset time period.
  • the manner of determining the CSFB fallback result may be: (1) After detecting the end of the voice communication in the GSM network, the terminal returns to the LTE network within a preset time period, and determines that the CSFB fallback result is successful. That is to say, 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 a fallback success, then the preset CSFB optimization scheme is successful.
  • the terminal After detecting the end of the voice communication under the GSM network, the terminal does not return to the LTE network within the preset time period, and determines that the CSFB fallback result is a fallback failure. 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 detecting device determines that the CSFB fallback result is a fallback failure, then the preset CSFB optimization scheme It is a failure.
  • the voice call state under the GSM network in the CSFB process can be detected in the scenario where the TDSCDMA cell signal disappears, 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.
  • the method for detecting the fallback result of the CSFB provided by the embodiment of the present invention may further include: S106-107. as follows:
  • the triggering terminal sends an attach request message to the LTE base station, and receives an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries indication information for indicating that the terminal uses the preset CSFB optimization scheme to perform voice service.
  • the terminal refers to the MT.
  • the terminal After the terminal is powered on, the terminal first performs an Evolved Packet System (EPS)/International Mobile Subscriber Identification Number (IMSI) attachment process, which includes triggering.
  • EPS Evolved Packet System
  • IMSI International Mobile Subscriber Identification Number
  • the terminal sends an attach request message (Attach Request) to the LTE base station, and receives an attach accept message (Attach Accept) sent by the LTE base station, where the attach accept message carries indication information for indicating that the terminal uses the preset CSFB optimization scheme to perform voice service.
  • the terminal is configured to perform measurement on the TDSCDMA cell, determine the target TDSCDMA cell, and report the target TDSCDMA cell to the LTE base station.
  • the RRC Reconfiguration is configured to prompt the UE to perform the MR measurement report, and measure the neighboring area TDSCDMA cell. Therefore, the target TDSCDMA cell is determined, and the target TDSCDMA cell is reported to the LTE base station, so that when the LIT base station sends the redirection command, the frequency information of the target TDSCDMA cell can be carried therein, which is convenient for the subsequent CSFB. carried out.
  • 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 target TDSCDMA cell has no signal 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 implemented. Whether the program is reasonable detection method.
  • detecting terminals located in the simulated network environment under TDSCDMA and GSM networks The voice call state and various request messages are simulated in a manner that does not require a staff member to go to the site, and other factors that affect the detection can be removed.
  • the personnel cost can be greatly reduced, and at the same time, the scenario described in the embodiment of the present invention can be eliminated. The influence of other factors on the test results.
  • a network environment is constructed by using a simulation platform, including a time division duplex (TDD)-LTE cell, and a TDSCDMA/GSM cell.
  • TDSCDMA is configured as neighbor cell information in the LTE SIB
  • GSM is configured as a neighboring cell.
  • Cell information, LTE neighbor cell information is configured in the TDSCDMA SIB18.
  • the anomaly scenario of the application embodiment is: in the scenario where the target TDSCDMA cell has no signal, the terminal can still complete the CSFB by using the known CS resources in the GSM network, 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 EPS/IMSI attach procedure is first performed.
  • the method includes: triggering the UE to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station, where the attach accept message carries the indication information used to indicate that the terminal uses the preset CSFB optimization scheme to perform the voice service.
  • the terminal detects the measurement of the TDSCDMA cell, determines the target TDSCDMA cell, and reports the target TDSCDMA cell to the LTE base station.
  • the RRC Reconfiguration is configured to prompt the UE to perform the MR measurement report, and measure the neighboring area TDSCDMA cell. , thereby determining the target TDSCDMA cell and reporting the target TDSCDMA cell To the LTE base station, when the LIT base station sends the redirection command, the frequency information of the target TDSCDMA cell can be carried therein, which facilitates the execution of the subsequent CSFB.
  • S203 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 Since the LTE base station has acquired the frequency point information of the target TDSCDMA cell, the UE receives the LTE_RRCConnectionRelease signaling sent by the LTE base station, that is, the redirection command.
  • the redirection command carries the frequency point information of the target TDSCDMA cell.
  • the base station sends an R8 redirection command (rrcConnectionRelease_R8(0)) to the UE, and the UE is based on the redirected life.
  • the frequency information of the TDSCDMA cell carried in the command is scanned, and the frequency of the TDSCDMA cell is scanned, and a frequency of a TDSCDMA cell (target TDSCDMA) is selected for communication.
  • the frequency point of the selected TDSCDMA cell is referred to as a target frequency point
  • the terminal is configured to send a voice communication request message to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information.
  • the CSFB fallback result detecting device simulates that the target TDSCDMA cell has no signal through the simulation platform, triggering the response voice communication request message, and detecting that the terminal has failed to establish a voice communication link with the target TDSCDMA cell, detecting whether the terminal sends a voice communication request to the GSM cell;
  • the terminal After detecting the end of the voice communication in the GSM network, 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 After detecting the end of the voice communication in the GSM network, the terminal does not return to the LTE network within the preset time period, and determines that the CSFB fallback result is a fallback failure.
  • S206 and S207-S209 and S201-S205 respectively constitute 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, and the embodiment of the present invention No restrictions.
  • the UE when the UE ends the call on the GAM network, the UE should quickly return to the LTE network.
  • the embodiment of the present invention further provides a CSFB fallback result detecting apparatus 1.
  • the apparatus includes:
  • the voice communication unit 10 is configured to detect, according to the target time-division synchronization code division multiple access TDSCDMA cell frequency point information, to the target TDSCDMA in the process of performing CSFB based on the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme.
  • the cell sends a voice communication request message, where the target TDSCDMA cell frequency information is carried in a redirect command sent by the LTE base station;
  • the detecting unit 11 is configured to: when triggering the response to the voice communication request message, fail to establish a voice communication link with the target TDSCDMA cell, detecting whether the terminal sends a voice communication request to the GSM cell; and when the terminal is When the GSM cell sends a voice communication request and successfully establishes a voice call link, detecting a voice communication state under the GSM network;
  • the determining unit 12 is configured to: when it is detected that the voice communication state is an off state, determine that the CSFB fallback result is a fallback failure; and when detecting that the voice communication state is a hold state, determine the GSM After the voice communication under the network ends, the terminal returns to the LTE network within a preset time period to determine the fallback result of the CSFB.
  • the device further includes:
  • the determining unit 12 is further configured to: after determining whether the terminal returns to the LTE network within a preset duration after the end of the voice communication in the GSM network, detecting that the voice communication ends in the GSM network After the terminal returns to the LTE network within the preset duration, the terminal determines that the CSFB fallback result is successful.
  • the device further includes:
  • the determining unit 12 is further configured to: after determining whether the terminal returns to the LTE network within a preset duration after the end of the voice communication in the GSM network, detecting that the voice communication ends in the GSM network After the terminal does not return to the LTE network within the preset duration, it is determined that the CSFB fallback result is a fallback failure.
  • the device further includes:
  • the attaching unit 13 is configured to: in the process of performing the CSFB according to the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, detecting that the terminal sends the voice communication to the target TDSCDMA cell according to the target TDSCDMA cell frequency point information. Before the request message, the terminal is triggered 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 carried to indicate the terminal
  • the preset CSFB optimization scheme is used to perform indication information of the voice service.
  • the device further includes:
  • the detecting unit 11 is further configured to: after receiving the attach accept message sent by the LTE base station in response to the attach request message, and executing the CSFB process according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform voice service
  • the terminal detects the TDSCDMA cell, determines the target TDSCDMA cell, and reports the target TDSCDMA cell to the LTE base station.
  • the detecting unit 11, the determining unit 12, the voice talking unit 10, and the attaching unit 13 may be implemented by the processor 14 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 14 and a storage medium 15 configured to store a computer program executable on the processor 14,
  • the processor 14 is configured to execute the step of the CSFB fallback result detecting method when the computer program stored in the storage medium 15 is executed.
  • bus system 16 is used to implement connection communication between these components.
  • the bus system 16 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • various buses are labeled as bus system 16 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 or in the form of hardware plus software functional units.
  • the embodiment of the present invention provides a CSFB fallback result detecting method and device, and a storage medium.
  • the terminal detects the target TDSCDMA cell frequency according to the target.
  • the point information is sent to the TDSCDMA cell to establish a voice communication request message, and the target TDSCDMA cell frequency point information is carried in the redirect command sent by the LTE base station; when the response voice communication request message is triggered, the voice communication link with the target TDSCDMA cell fails to be detected.
  • the terminal sends a voice communication request to the GSM cell; when the terminal sends a voice communication request to the GSM cell and successfully establishes a voice call link, detecting a voice communication state under the GSM network; when detecting that the voice communication state is off state
  • the CSFB fallback result is determined to be a fallback failure; when the voice communication state is detected as the hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice communication under the GSM network ends, to determine the CSFB fallback result.
  • the technical solution of the embodiment of the present invention can detect the voice call state in the GSM network during the CSFB process in the scenario where the TDSCDMA cell signal disappears, thereby finally determining The CSFB fallback result realizes the detection of the fallback result in the CSFB process, and in the subsequent 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，检测出终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息；当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，检测终端是否向GSM小区发送语音通信请求；当终端向GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；当检测到语音通信状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，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，提升了实际通话时的通话成功率。
本发明实施例的技术方案可以如下实现：
本发明实施例提供的一种电路域回落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，检测出所述终端根据目标时分同步码分多址TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，所述目标TDSCDMA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；
当触发响应所述语音通信请求消息，与所述目标TDSCDMA小区建立语音通信链路失败时，检测所述终端是否向GSM小区发送语音通信请求；
当所述终端向所述GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
当检测到所述语音通信状态为断开状态时，确定所述CSFB的回落结果为回落失败；
当检测到所述语音通信状态为保持状态时，确定在所述GSM网络下的语音通信结束后，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，所述确定在所述GSM网络下的语音通信结束后，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：
检测到在所述GSM网络下的语音通信结束后，所述终端在所述预设时长内返回所述LTE网络，确定所述CSFB的回落结果为回落成功。
在本发明实施例中，所述确定在所述GSM网络下的语音通信结束后，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：
检测到在所述GSM网络下的语音通信结束后，所述终端未在所述预设时长内返回所述LTE网络，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，检测出所述终端根据目 标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息之前，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之后，且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过程之前，所述方法还包括：
检测到所述终端对TDSCDMA小区进行测量，确定所述目标TDSCDMA小区，以及将所述目标TDSCDMA小区上报至所述LTE基站。
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：
语音通信单元，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，检测出所述终端根据目标时分同步码分多址TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，所述目标TDSCDMA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；
检测单元，配置为当触发响应所述语音通信请求消息，与所述目标TDSCDMA小区建立语音通信链路失败时，检测所述终端是否向GSM小区发送语音通信请求；及当所述终端向所述GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
确定单元，配置为当检测到所述语音通信状态为断开状态时，确定所述CSFB的回落结果为回落失败；及当检测到所述语音通信状态为保持状态时，确定在所述GSM网络下的语音通信结束后，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所述GSM网络下的语音通信结束后，所述终端是否在预设时长内返回LTE网络之后，检测到在所述GSM网络下的语音通信结束后，所述终端在所述预设时长内返回所述LTE网络，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所述GSM网络下的语音通信结束后，所述终端是否在预设时长内返回LTE网络之后，检测到在所述GSM网络下的语音通信结束后，所述终端未在所述预设时长内返回所述LTE网络，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，检测出所述终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息之前，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：
所述检测单元，还配置为所述接收所述LTE基站响应所述附着请求消息发送的附着接受消息之后，且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过程之前，检测到所述终端对TDSCDMA小区进行测量，确定出所述目标TDSCDMA小区，以及将所述目标TDSCDMA小区上报至所述LTE基站。
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所述CSFB的回落结果的 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，检测出终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，目标TDSCDMA小区频点信息携带在LTE基站发送的重定向命令中；当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，检测终端是否向GSM小区发送语音通信请求；当终端向GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
当检测到语音通信状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，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TDSCDMA小区信号消失的场景下检测出CSFB过程中的在GSM网络下的语音通话状态，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/TDSCDMA小区进行接入；3)UE读取GSM小区/TDSCDMA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/TDSCDMA基站的退网和重耕，原有的网络部署在基站信令侧的配置并未实时更新，出现了网络下发给UE的配置信息和实际的部署情况不一致，从而导致CSFB这种跨系统(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TDSCDMA小区的信号消失，使得终端在目标TDSCDMA小区建立语音通信被拒绝的场景下，CSFB回落结果的检测方法。
在本发明实施例中，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，检测出终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，目标TDSCDMA小区频点信息携带在LTE基站发送的重定向命令中；当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，检测终端是否向GSM小区发送语音通信请求；当终端向GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；当检测到语音通信状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，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TDSCDMA小区信号消失的场景下检测出CSFB过程中的在GSM网络下的语音通话状态，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，检测出终端根据目标TDSCDMA小区频点 信息向TDSCDMA小区发送建立语音通信请求消息，目标TDSCDMA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TDSCDMA网络下的语音通话是基于目标TDSCDMA小区频点信息对目标TDSCDMA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TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息(这可以由CSFB的回落结果检测装置检测出的)，其中，目标TDSCDMA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TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息可以为CS域被呼叫流程的实现。其中，
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TDSCDMA小区频点信息回落到TDSCDMA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TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息的过程。
S102、当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，检测终端是否向GSM小区发送语音通信请求；
当CSFB的回落结果检测装置检测到终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息之后，由于检测到网络开始响应语音通信请求消息，以下发CS域的资源进行CS RAB setup，从而语音通信信道建立完成，即成功建立语音通信链路。但是在本发明实施例中，当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，即CS域的语音通信都建立失败的时候，CSFB的回落结果检测装置开始检测终端是否向GSM小区发送语音通信请求。
在本发明实施例中，本实施例以GSM小区作为实现CS语音的小区，其中，在LTE SIB中配置TDSCDMA小区为邻区小区信息，配置GSM小区为邻区，在TDSCDMA SIB18中配置LTE邻区小区信息。而后，基于构造的网络环境执行CSFB过程。
在本发明实施例中，由于TDSCDMA小区和GSM小区都配置为LTE网络的邻区，那么在LTE网络回落到TDSCDMA小区出现失败的情况时，若是仍可以在GSM小区成功回落，则表征此次的CSFB优化方案也还是成功的，因此，当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，CSFB的回落结果检测装置可以通过检测终端是否向GSM小区发送语音通信请求，来判断在GSM小区的回落结果，以判定整个CSFB的回落是否成功。
基于此，在一些实施例中，位于仿真网络环境下的终端在TDSCDMA网络层，触发的响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败的情况，以便检测在GSM网络下的CSFB的回落结果。
需要说明的是，在本发明实施例提供的是一种在目标TDSCDMA小区的信号消失，使得终端在目标WCDMA小区建立语音通信链路失败的场景下，CSFB回落结果的检测方法，因此，在检测到终端根据目标TDSCDMA小区频点信息向TDSCDMA小区发送建立语音通信请求消息的时候，CSFB的回落结果检测装置触发网络模拟响应语音通信请求消息，与目标TDSCDMA小区建立语音通话链路失败，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网络模拟目标TDSCDMA小区信号消失，UE无法建立连接，于是，该CSFB的回落结果检测装置可以开始检测终端是否向GSM小区发送语音通信请求，来进一步的检测CSFB的回落结果。
S103、当终端向GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
在终端执行CSFB过程中，CSFB的回落结果检测装置检测终端是否向GSM小区发送语音通信请求之后，可以存在两种检测结果，一种为CSFB的回落结果检测装置检测出终端未向GSM小区发送语音通信请求，一种为终端向GSM小区发送语音通信请求；这时，若CSFB的回落结果检测装置检测出终端未向GSM小区发送语音通信请求，则表征CSFB的回落结果为回落失败；若终端向GSM小区发送语音通信请求且成功建立语音通话链路，则需要通过检测在GSM网络下的语音通信状态进行进一步的判断。
这里，当终端向GSM小区发送语音通信请求时，从语音通信请求中解析出接入请求原因值(cause)；判断语音通信请求携带的接入请求原因值是否为预设值；当接入请求原因值为预设值(即正确的接入请求原因值)时，控制终端继续执行CSFB过程。
后续执行CSFB过程的过程中，检测语音通话链路是否建立成功；如果成功建立语音通话链路，则代表CSFB的回落结果可能为回落成功，还需进行进一步的检测，也即终端采用的预设的CSFB优化方案可能为合理的CSFB回落方案。当检测出终端未向GSM小区发送语音通信请求时，也 即CSFB的回落结果为回落失败，代表终端采用的预设的CSFB优化方案为不合理的CSFB回落方案。
上述方案中，回落失败的情况还包括如下两种：当接入请求原因值不是预设值时，确定CSFB的回落结果为回落失败；当语音通话链路未建立成功时，确定CSFB的回落结果为回落失败。这时，终端采用的预设的CSFB优化方案为不合理的CSFB回落方案。
需要说明的是，本发明实施例中，仿真平台开始在GSM层检测终端是否发起语音通信请求。
这里，首先设置定时器，检测终端是否在定时器超时之前向GSM小区发送语音通信请求。这里，定时器的作用是防止检测时间过长。
S104、当检测到语音通信状态为断开状态时，确定CSFB的回落结果为回落失败；
CSFB的回落结果检测装置检测在GSM网络下的语音通信状态之后，上述语音通信状态可以包括：语音通信断开状态(断开状态)和语音通信保持状态(保持状态)；当检测到语音通信状态为断开状态时，表征在GSM网络下仍然不能进行正常的语音通信，因此，CSFB的回落结果检测装置确定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。
S105、当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果。
CSFB的回落结果检测装置检测在GSM网络下的语音通信状态之后，上述语音通信状态可以包括：语音通信断开状态(断开状态)和语音通信保持状态(保持状态)；当检测到语音通信状态为保持状态时，在GSM网 络下可以进行正常的语音通信，表征模拟的TDSCDMA小区没有信号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GSM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GSM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GSM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，当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，终端是否在预设时长内返回LTE网络之后，以确定CSFB的回落结果的方式可以为：(1)、检测到在GSM网络下的语音通信结束后，终端在预设时长内返回LTE网络，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)、检测到在GSM网络下的语音通信结束后，终端未在预设时长内返回LTE网络，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TDSCDMA小区信号消失的场景下检测出CSFB过程中的在GSM网络下的语音通话状态，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，基于图1，如图2所示，在S101之前，本发明实施例提供的一种CSFB的回落结果检测方法还可以包括：S106-107。如下：
S106、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。
本发明实施例中，终端是指MT，终端开机后，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，这其中包括触发终端向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。
S107、检测到终端对TDSCDMA小区进行测量，确定目标TDSCDMA小区，以及将目标TDSCDMA小区上报至LTE基站。
在本发明实施例中，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之后，配置RRC Reconfiguration，促使UE进行MR测量报告，对邻区TDSCDMA小区进行测量，从而确定目标TDSCDMA小区，以及将目标TDSCDMA小区上报至LTE基站，这样，LIT基站在进行重定向命令下发时，就可以将目标TDSCDMA小区的频点信息携带在里面了，便于后续的CSFB的执行。
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，来检测出在目标TDSCDMA小区没有信号的场景中预设的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。
外，检测位于仿真网络环境下的终端在TDSCDMA和GSM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，包括时分双工(TDD)-LTE小区、、TDSCDMA/GSM小区；其中，LTE SIB中配置TDSCDMA为邻区小区信息，配置GSM为邻区小区信息，在TDSCDMA SIB18中配置LTE邻区小区信息。
本应用实施例的异常场景是：在目标TDSCDMA小区没有信号的场景中，终端仍然能在GSM网络下利用已知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EPS/IMSI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，接收LTE基站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。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、检测到终端对TDSCDMA小区进行测量，确定目标TDSCDMA小区，以及将目标TDSCDMA小区上报至LTE基站；
在本发明实施例中，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之后，配置RRC Reconfiguration，促使UE进行MR测量报告，对邻区TDSCDMA小区进行测量，从而确定目标TDSCDMA小区，以及将目标TDSCDMA小区上报 至LTE基站，这样，LIT基站在进行重定向命令下发时，就可以将目标TDSCDMA小区的频点信息携带在里面了，便于后续的CSFB的执行。
S203、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)。
由于LTE基站已经获取到了目标TDSCDMA小区的频点信息了，这样，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TDSCDMA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，UE基于重定向命 令中携带的TDSCDMA小区的频点信息，扫描TDSCDMA小区的频点，并选择出一个TDSCDMA小区(目标TDSCDMA)的频点用于进行通信。这里，将所选择出的TDSCDMA小区的频点称为目标频点，实现终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息的过程。
S204、当CSFB的回落结果检测装置通过仿真平台模拟目标TDSCDMA小区没有信号，触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，检测终端是否向GSM小区发送语音通信请求；
S205、当终端向GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
S206、当检测到语音通信状态为断开状态时，确定CSFB的回落结果为回落失败；
S207、当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，终端是否在预设时长内返回LTE网络，以确定CSFB的回落结果；
S208、检测到在GSM网络下的语音通信结束后，终端在预设时长内返回LTE网络，确定CSFB的回落结果为回落成功；
S209、检测到在GSM网络下的语音通信结束后，终端未在预设时长内返回LTE网络，确定CSFB的回落结果为回落失败。
需要说明的是，S206与S207-S209分别与S201-S205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GAM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，说明CSFB的优化方案(CSFB的回落方案)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：
语音通信单元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，检测出所述终端根据目标时分同步码分多址TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，所述目标TDSCDMA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；
检测单元11，配置为当触发响应所述语音通信请求消息，与所述目标TDSCDMA小区建立语音通信链路失败时，检测所述终端是否向GSM小区发送语音通信请求；及当所述终端向所述GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
确定单元12，配置为当检测到所述语音通信状态为断开状态时，确定所述CSFB的回落结果为回落失败；及当检测到所述语音通信状态为保持状态时，确定在所述GSM网络下的语音通信结束后，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所述GSM网络下的语音通信结束后，所述终端是否在预设时长内返回LTE网络之后，检测到在所述GSM网络下的语音通信结束后，所述终端在所述预设时长内返回所述LTE网络，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所述GSM网络下的语音通信结束后，所述终端是否在预设时长内返回LTE网络之后，检测到在所述GSM网络下的语音通信结束后，所述终端未在所述预设时长内返回所述LTE网络，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，检测出所述终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息之前，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：
所述检测单元11，还配置为所述接收所述LTE基站响应所述附着请求消息发送的附着接受消息之后，且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过程之前，检测到所述终端对TDSCDMA小区进行测量，确定出所述目标TDSCDMA小区，以及将所述目标TDSCDMA小区上报至所述LTE基站。
实际应用时，所述检测单元11、确定单元12、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14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14和配置为存储能够在处理器14上运行的计算机程序的存储介质15，
其中，所述处理器14配置为运行所述存储介质15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16耦合在一起。可理解，总线系统16用于实现这些组件之间的连接通信。总线系统16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16。
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，检测出终端根据目标TDSCDMA小区频点信息向TDSCDMA小区发送建立语音通信请求消息，目标TDSCDMA小区频点信息携带在LTE基站发送的重定向命令中；当触发响应语音通信请求消息，与目标TDSCDMA小区建立语音通信链路失败时，检测终端是否向GSM小区发送语音通信请求；当终端向所述GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；当检测到语音通信状态为断开状态时，确定CSFB的回落结果为回落失败；当检测到语音通信状态为保持状态时，确定在GSM网络下的语音通信结束后，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TDSCDMA小区信号消失的场景下检测出CSFB过程中的在GSM网络下的语音通话状态，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 (11)

  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，检测出所述终端根据目标时分同步码分多址TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，所述目标TDSCDMA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；
    当触发响应所述语音通信请求消息，与所述目标TDSCDMA小区建立语音通信链路失败时，检测所述终端是否向GSM小区发送语音通信请求；
    当所述终端向所述GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
    当检测到所述语音通信状态为断开状态时，确定所述CSFB的回落结果为回落失败；
    当检测到所述语音通信状态为保持状态时，确定在所述GSM网络下的语音通信结束后，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，所述确定在所述GSM网络下的语音通信结束后，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：
    检测到在所述GSM网络下的语音通信结束后，所述终端在所述预设时长内返回所述LTE网络，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，所述确定在所述GSM网络下的语音通信结束后，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：
    检测到在所述GSM网络下的语音通信结束后，所述终端未在所述预设时长内返回所述LTE网络，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，检测出所述终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息之前，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。
  5. 根据权利要求4所述的方法，其中，所述接收所述LTE基站响应所述附着请求消息发送的附着接受消息之后，且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过程之前，所述方法还包括：
    检测到所述终端对TDSCDMA小区进行测量，确定所述目标TDSCDMA小区，以及将所述目标TDSCDMA小区上报至所述LTE基站。
  6. 一种CSFB的回落结果检测装置，所述装置包括：
    语音通信单元，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，检测出所述终端根据目标时分同步码分多址TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息，所述目标TDSCDMA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；
    检测单元，配置为当触发响应所述语音通信请求消息，与所述目标TDSCDMA小区建立语音通信链路失败时，检测所述终端是否向GSM小区发送语音通信请求；及当所述终端向所述GSM小区发送语音通信请求且成功建立语音通话链路时，检测在GSM网络下的语音通信状态；
    确定单元，配置为当检测到所述语音通信状态为断开状态时，确定所述CSFB的回落结果为回落失败；及当检测到所述语音通信状态为保持状态时，确定在所述GSM网络下的语音通信结束后，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。
  7. 根据权利要求6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所述GSM网络下的语音通信结束后，所述终端是否在预设时长内返回LTE网络之后，检测到在所述GSM网络下的语音通信结束后，所述终端在所述预设时长内返回所述LTE网络，确定所述CSFB的回落结果为回落成功。
  8. 根据权利要求6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所述GSM网络下的语音通信结束后，所述终端是否在预设时长内返回LTE网络之后，检测到在所述GSM网络下的语音通信结束后，所述终端未在所述预设时长内返回所述LTE网络，确定所述CSFB的回落结果为回落失败。
  9. 根据权利要求6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，检测出所述终端根据目标TDSCDMA小区频点信息向目标TDSCDMA小区发送建立语音通信请求消息之前，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。
  10. 根据权利要求9所述的装置，其中，所述装置还包括：
    所述检测单元，还配置为所述接收所述LTE基站响应所述附着请求消息发送的附着接受消息之后，且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过程之前，检测到所述终端 对TDSCDMA小区进行测量，确定出所述目标TDSCDMA小区，以及将所述目标TDSCDMA小区上报至所述LTE基站。
  11. 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1-5任一项所述的方法步骤。
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