WO2019061431A1

WO2019061431A1 - Method and device for detecting fallback result of csfb, and computer storage medium

Info

Publication number: WO2019061431A1
Application number: PCT/CN2017/104865
Authority: WO
Inventors: 曾元清
Original assignee: 深圳市云中飞网络科技有限公司
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2019-04-04
Also published as: CN108124514B; CN108124514A

Abstract

Disclosed in the present invention are a method and a device for detecting the fallback result of CSFB, and a computer storage medium. The method comprises: performing a CSFB process on the basis of first indication information, the first indication information being used for indicating user equipment to use a voice service on the basis of a preset CSFB optimization scheme, the preset CSFB optimization scheme at least comprising falling back to a WCDMA network first when performing the CSFB process; detecting a voice call state of the user equipment incapable of acquiring PS resources in the WCDMA network; and determining, using the detected voice call state, whether the fallback of the CSFB is successful, the first indication information being carried by an attach accept message sent by an LTE base station to the user equipment, the attach accept message being sent by the LTE base station after the user equipment has sent an attach request message to the LTE base station, and the CSFB process being triggered and performed when the user equipment has received a paging message sent by the LTE base station.

Description

Method and device for detecting falling result of CSFB, computer storage medium

Technical field

The present invention relates to the field of Circuit Switched Fallback (CSFB), and in particular, to a CSFB fallback result detecting method and apparatus, and a computer storage medium.

Background technique

Since the wireless communication of Long Term Evolution (LTE) and 2G/3G dual-mode terminals is a single-mode (MIMO) mode, dual-mode or multi-mode terminals with LTE and 2G/3G access capabilities, When using LTE access, 2G/3G circuit domain service signals cannot be transmitted. In order to enable the user equipment (UE) to perform circuit switching (CS) services such as voice and LTE access, the UE can perform packet switching (Packet Switch, PS) under the LTE access. The business is processed correctly, resulting in CSFB technology.

In the CSFB process, the originator of the telephone is called the Mobile Origination (MO), and the receiver of the telephone is called the Mobile Termination (MT). The MO and the MT each have their own CSFB signaling flow. For the MT in the CSFB process, when CSFB is used to fall back to the Wideband Code Division Multiple Access (WCDMA) network, the CSFB process fails probabilistically due to the occurrence of various abnormal conditions, resulting in the call. Unable to connect, how to effectively detect the fallback of CSFB under abnormal scenes is especially necessary.

Summary of the invention

To solve the above technical problem, an embodiment of the present invention provides a CSFB fallback result detecting method and apparatus, and a computer storage medium.

An embodiment of the present invention provides a method for detecting a fallback result of a CSFB, including:

Performing a CSFB process based on the first indication information, where the first indication information is used to indicate that the terminal uses the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme at least includes first falling back to the WCDMA network when performing the CSFB process ;

Detecting a voice call state when the terminal cannot obtain PS resources under the WCDMA network;

Using the detected voice call state, determining whether the CSFB is successfully dropped;

The first indication information is carried in an 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 an attach request message to the LTE base station;

The CSFB process is triggered when the terminal receives the paging message sent by the LTE base station.

In the foregoing solution, the determining, by using the detected voice call state, whether the CSFB is successfully dropped, includes:

When it is detected that the terminal's voice call is interrupted in the WCDMA network, it is determined that the CSFB fallback fails.

In the foregoing solution, the terminal is configured to, after receiving a route area update (RAU) request, if it receives the delivered RAU reject message, determining that the PS resource cannot be acquired under the WCDMA network.

After the RAU reject message is sent to the terminal, if the RAU request sent by the terminal is received, it is determined that the CSFB fallback fails.

In the above solution, the method further includes:

After the voice call of the WCDMA network ends, detecting whether the terminal returns to the LTE network within a preset time period;

When the terminal does not return to the LTE network within the preset duration, it is determined that the CSFB fallback fails.

In the above solution, the detecting a voice call state when the terminal cannot obtain a PS resource in a WCDMA network includes:

Detecting a voice call state when the terminal in the simulated network environment cannot obtain PS resources under the WCDMA network.

An embodiment of the present invention further provides a CSFB fallback result detecting apparatus, including:

An execution unit, configured to perform a CSFB process based on the first indication information, where the first indication information is used to indicate that the terminal uses the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme is at least included in the execution of the CSFB process First fall back to the WCDMA network;

a detecting unit, configured to detect a voice call state when the terminal cannot acquire a PS resource in a WCDMA network;

a determining unit configured to determine whether the CSFB is successfully dropped by using the detected voice call state;

In the above solution, the determining unit is configured to:

In the foregoing solution, the terminal is configured to receive the RAU reject message after receiving the RAU request, and determine that the PS resource cannot be obtained in the WCDMA network.

In the above solution, the determining unit is configured to:

In the above solution, the detecting unit is further configured to: after the end of the voice call of the WCDMA network, detect whether the terminal returns to the LTE network within a preset duration;

The determining unit is further configured to determine that the CSFB fallback fails when the terminal does not return to the LTE network within the preset duration.

In the above solution, the detecting unit is configured to:

The embodiment of the present invention further provides a CSFB fallback result detecting apparatus, including: a processor and a memory configured to store a computer program capable of running on the processor,

Wherein the processor is configured to perform the steps of any of the above methods when the computer program is run.

An embodiment of the present invention further provides a computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the steps of any of the above methods.

According to the technical solution provided by the embodiment of the present invention, the CSFB process is performed based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service based on the preset CSFB optimization scheme, where the preset CSFB optimization scheme is at least included in When the CSFB process is executed, the WCDMA network is first dropped; the voice call state when the terminal cannot obtain the PS resource in the WCDMA network is detected; and the detected voice call state is used to determine whether the CSFB is successfully dropped; wherein the first indication is successful The information is carried in an 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 an attach request message to the LTE base station; the CSFB process is received by the terminal The paging message sent by the LTE base station is triggered to be executed. Using the solution provided by the embodiment of the present application, When the terminal is rejected when the WCDMA network requests the PS resource, the voice call state under the WCDMA network in the CSFB process is detected, thereby finally determining the CSFB fallback result, so that the optimization scheme can be further improved in the subsequent CSFB process. To improve the probability of success of the CSFB process to enhance the user's calling experience.

DRAWINGS

1 is a schematic flowchart of a method for detecting a fallback result of a CSFB according to an embodiment of the present application;

2 is a schematic flowchart of a method for detecting a fallback result of a CSFB according to an application embodiment of the present application;

3 is a schematic diagram 1 of an emulation code according to an embodiment of the present application;

4 is a schematic diagram 2 of a simulation code according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a CSFB fallback result detecting apparatus according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of hardware structure of a CSFB fallback result detecting apparatus according to an embodiment of the present application.

Detailed ways

The embodiments of the present application are described in detail with reference to the accompanying drawings.

Under normal circumstances, the CSFB-enabled terminal can search for the LTE network, complete the LTE/2G/3G network joint registration, and be able to voice call and call.

The CSFB process consists of three phases: 1) the UE initiates a call (corresponding to MO) on the LTE network, or receives a page (corresponding to the MT); 2) the UE falls back under the guidance of the LTE network and searches for a suitable 2G network cell or 3G network The cell performs access; 3) the UE reads the system broadcast message of the 2G network cell or the 3G network cell and establishes a voice call.

As the scale of LTE base stations continues to expand, and some old GSM/TDSCDMA base stations are retired and re-farmed, the configuration of the original network deployed on the base station signaling side is not updated in real time. The configuration information sent to the UE by the network is inconsistent with the actual deployment situation, which causes various abnormalities such as CSFB inter-system (InterRAT) voice calls, such as failure to connect, repeated connection failure, and the like.

In order to solve the call problem caused by such network deployment incompatibility, various terminal manufacturers have adopted various optimization methods to improve the call experience. To verify the rationality of the CSFB optimization scheme, it is necessary to perform the CSFB process in the abnormal scenario. Detecting in order to improve the CSFB optimization scheme in a targeted manner.

The CSFB fallback scheme adopts the 3GPP R8 redirection fallback scheme. During the CSFB deployment process, the problem of parameter configuration will probabilistically cause the CSFB process to be abnormal. To this end, the embodiment of the present application provides a method for detecting a CSFB fallback result when the terminal is rejected when requesting PS resources after falling back to the WCDMA network.

In various embodiments of the present application, the CSFB process is performed based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service based on the preset CSFB optimization scheme, where the preset CSFB optimization scheme includes at least When performing the CSFB process, it first falls back to the wideband code division multiple access WCDMA network; detects the voice call state when the terminal cannot obtain the packet switched PS resource under the WCDMA network; and uses the detected voice call state to determine whether the CSFB falls back successfully. The first indication information is carried in an attach accept message sent by the long term evolution LTE base station to the terminal; the attach accept message is sent by the LTE base station after the terminal sends an attach request message to the LTE base station; The CSFB process is triggered when the terminal receives the paging message sent by the LTE base station.

With the solution provided by the embodiment of the present application, when the terminal is rejected when the WCDMA network requests the PS resource, the voice call state in the WCDMA network in the CSFB process is detected, thereby finally determining the CSFB fallback result, so that the subsequent In the process of CSFB, the optimization scheme can be further improved to improve the probability of success of the CSFB process, so as to enhance 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 disclosure. As shown in FIG. 1, the CSFB fallback result detecting method includes the following steps:

Step 101: Perform a CSFB process based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service based on the preset CSFB optimization scheme.

Here, the preset CSFB optimization scheme at least includes first falling back to the WCDMA network when performing the CSFB process; the first indication information is carried in an attach accept message sent by the LTE base station to the terminal; the attach accept message is the terminal to the LTE base station Transmitted by the LTE base station after sending an attach request message;

Here, the terminal initially camps on the cell of the LTE network. When the preset CSFB optimization scheme is adopted, if the CSFB process is performed, the terminal switches to the WCDMA network under the indication of the network side.

Optionally, the preset CSFB optimization solution may further include: when the terminal is rejected when the WCDMA network requests the PS resource, continuing to complete the terminal's voice call on the WCDMA network.

Optionally, the preset CSFB optimization solution may further include: returning to the LTE network within a preset time period after the voice call of the WCDMA network ends.

Step 102: Detect a voice call state when the terminal cannot obtain a PS resource in a WCDMA network.

Optionally, the terminal is configured to: after receiving the RAU request to the WCDMA base station, if the RAU reject message sent by the WCDMA base station is received, determining that the PS resource cannot be obtained in the WCDMA network.

In actual implementation, after the terminal falls back to the WCDMA network, a radio resource control (RRC) connection request (RRC Connection Request) is initiated, and the network issues the resources of the CS domain to perform the CS domain radio access bearer (Radio Access). Bearer, RAB), so that the terminal can make a voice call on the WCDMA network, but when the terminal sends a RAU request to the network side (that is, when the terminal requests the PS domain access), the network side delivers the terminal. The RAU rejects (RAU reject) message, the terminal cannot obtain the PS domain resource, and fails to complete the flow of the subsequent RAU; for example, the network side sends a RAU reject message to the terminal, and may also send the RAU reject reason, for example, The reason for the RAU rejection is that the PS domain does not allow access (PS not allowed); here, the reason for the network side to send the RAU reject may be triggered by multiple trigger conditions. For example, the network side determines that the terminal does not open the data service of the WCDMA network.

In an optional embodiment, when performing the CSFB, the network side may send the specified WCDMA cell frequency point information to the terminal when the CSFB process is triggered, so that the terminal may be based on the specified WCDMA cell frequency point information. Into the WCDMA network; for example, the specified WCDMA cell frequency point information may be carried in a redirection command sent by the Long Term Evolution (LTE) base station.

In a practical application, a network environment applied to the embodiment of the present application can be constructed by means of a laboratory simulation. That is, the scenario in which the terminal is located in the embodiment of the present application is obtained through simulation, and the processing is performed on the one hand. The staff does not need to go to the site for testing, so that the personnel cost can be reduced. On the other hand, the scene of the scene may also contain other factors, thereby affecting the detection result. Therefore, the simulation network of the embodiment of the present application can stably reproduce the scene. The CSFB anomaly scenario that occurs in the network can eliminate the influence of other factors on the detection result in the scenario described in the embodiment of the present application.

Based on this, in some embodiments of the present application, the voice call state when the terminal in the simulated network environment cannot acquire the PS resource under the WCDMA network may be detected.

Step 103: Determine whether the CSFB is successfully dropped by using the detected voice call state.

Optionally, when the network side detects that the terminal is interrupted by the voice call of the WCDMA network (cannot be maintained after the voice call is established), determining that the CSFB falls back fails.

Optionally, after the network side sends the RAU reject message to the terminal, if the RAU request sent by the terminal is received again, it is determined that the CSFB fallback fails.

Optionally, when the network side detects that the voice call of the terminal in the WCDMA network is not interrupted, that is, the terminal keeps the voice call after the voice call of the WCDMA network is established, after the voice call of the WCDMA network ends, detecting whether the terminal is at a preset duration Return to the LTE network internally; when the terminal does not return to the LTE network within the preset duration, it is determined that the CSFB fallback fails.

It can be understood that when the network side detecting terminal returns to the LTE network within a preset time period, it is determined that the CSFB fallback is successful.

The preset duration can be set as needed.

Here, in actual application, it is possible to detect whether the terminal requests resources to the WCDMA network and establish a voice call through related signaling; accordingly, the related signaling can be used to detect whether the terminal's voice call on the WCDMA network is interrupted, The related signaling is used to detect whether the terminal returns to the LTE network within a preset time period.

The method provided by the embodiment of the present application is to perform a CSFB process based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme is at least included in the execution. The CSFB process first falls back to the WCDMA network; detects the voice call state when the terminal cannot acquire the PS resource under the WCDMA network; and uses the detected voice call state to determine whether the CSFB is successfully dropped; wherein the first indication information And being 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 an attach request message to the LTE base station; and the CSFB process is that the terminal receives the The execution is triggered when the paging message sent by the LTE base station is described. With the solution provided by the embodiment of the present application, when the terminal is rejected when the WCDMA network requests the PS resource, the voice call state in the WCDMA network in the CSFB process is detected, thereby finally determining the CSFB fallback result, so that the subsequent In the process of CSFB, the optimization scheme can be further improved to improve the probability of success of the CSFB process. Increase the user's calling experience.

In addition, detecting the voice call state when the terminal in the simulated network environment cannot obtain the PS resource under the WCDMA network, the simulation method does not require the staff to go to the site, and can remove other factors that affect the detection, so that the The personnel cost is reduced, and at the same time, the influence of other factors on the detection result in the scenario described in the embodiment of the present application can be eliminated.

The present application will be further described in detail below in conjunction with an application embodiment.

In this application embodiment, a network environment is constructed by using a simulation platform, including a frequency division duplex (FDD)-LTE cell and a WCDMA cell. Among them, EVDO neighbor cell information is configured in the LTE SIB, and the LTE neighboring cell is configured in the WCDMA SIB18. Cell information.

The abnormal scenario of the application embodiment is that the UE does not open the WCDMA data service, and the PS resource is rejected when the CSFB falls back to the WCDMA network. The reason is that the PS resource is not allowed to access (PS not allowed), and the verification is in this case. The UE can still complete the voice call under the WCDMA network, and verify the validity and rationality of the UE side call optimization scheme.

The detection method of the fallback result of the CSFB of this application embodiment, as shown in FIG. 2, includes the following steps:

Step 200: The UE registers on the LTE cell to perform an attach procedure.

Specifically, 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.

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 (Attach Accept) sent by the LTE base station, where the attach accept message carries the first indication information, where An indication information is used to instruct the terminal to use the voice service based on the preset CSFB optimization scheme. FIG. 3 is a first schematic diagram of an emulation code according to an embodiment of the present application, in which: IMS voice over PS(V)=Not supported(0), representing first indication information.

Step 201: The network side triggers the MT CSFB process, and the network side sends a paging message (Paging). Give the UE, start the CSFB process;

Here, in actual application, the MO needs to initiate a call for the MT first, and then the MT receives the paging message sent by the network side.

Illustratively, after receiving the initial address request (IAM) incoming message, the mobile services switching center (MSC) in the network sends the SGsAP-PAGING-REQUEST according to the existing SGs association and Mobility Management Entity (MME) information. The message is sent to the MME. Here, the SGsAP-PAGING-REQUEST message carries the following information: IMSI, Temporary Mobile Subscriber Identity (TMSI), Service Indicator, Calling Number, and Location Area Information.

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. To avoid the call waiting time being too long during the call connection process, 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. Here, the Initial UE Context Setup message carries a CS Fallback Indicator, and the CS Fallback Indicator is used to indicate that the base station UE needs to fall back to the UMTS Terrestrial Radio Access Network due to the CSFB service requirement (UTRAN, UMTS Terrestrial Radio Access Network). ) / GSM / EDGE Radio Access Network (GERAN, GSM EDGE Radio Access Network).

In the attaching process, the UE receives the LTE_RRCConnectionRelease signaling sent by the LTE base station, that is, the redirect command. The redirection command carries the frequency information of the EVDO 3G cell. As shown in FIG. 4, the base station sends an R8 redirection command (rrcConnectionRelease_R8(0)) to the UE.

Step 202: The UE determines that the PS resource is rejected in the WCDMA network.

Optionally, after the UE falls back to the WCDMA network, a radio resource control (RRC) connection request (RRC Connection Request) is initiated, and the network is sent. The CS domain resources are used to establish a CS Domain Radio Access Bearer (RAB), so that the terminal can establish a voice call on the WCDMA network, but when the terminal sends a RAU request to the network side, (When the terminal requests the access of the PS domain), the network side sends a RAU reject message to the terminal, and the terminal cannot obtain the PS domain resource, and the process of the subsequent RAU is not completed; for example, the network side sends the terminal to the terminal. The RAU rejects the message (RAU reject), and may also send the RAU reject reason. For example, the RAU rejects the reason: the PS domain does not allow access (PS not allowed); here, the network side sends the RAU reject reason may be caused by multiple trigger conditions. Triggered, for example, the network side determines that the terminal does not open the data service of the WCDMA network.

In actual implementation, the following process may be simulated by the simulation platform: when receiving the RAU request sent by the UE, the RAU reject message is sent to the UE.

Step 203: Detect whether the UE keeps the voice call after the voice call is established. If yes, execute step 204. Otherwise, the CSFB fallback fails, that is, the preset CSFB optimization scheme fails.

Here, if the UE can maintain a voice call after the voice call is established, the UE can still keep the CS domain call unaffected in this case.

Step 204: Detect whether the RAU request sent by the UE is received after the RAU reject message is sent to the UE. If not, execute step 205. If yes, the CSFB fallback fails, that is, the preset CSFB optimization scheme fails.

Step 205: Detect whether the UE returns to the LTE network within a preset time period after the call ends. If yes, the CSFB fallback is successful. Otherwise, the CSFB fallback fails.

According to the preset CSFB optimization scheme, when the UE ends the WCDMA call, the UE should quickly return to the LTE network.

When the UE cannot return to the LTE network within the preset duration, the UE may attempt to perform the RAU procedure on the EVDO network, indicating that the optimization scheme fails.

In order to implement the method of the embodiment of the present application, the embodiment of the present application further provides a CSFB fallback result detecting device. As shown in FIG. 5, the device includes:

The executing unit 51 is configured to perform a CSFB process based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme is at least included in the execution of the CSFB process First fall back to the WCDMA network;

The detecting unit 52 is configured to detect a voice call state when the terminal cannot acquire the packet switched PS resource under the WCDMA network;

The determining unit 53 is configured to determine whether the CSFB is successfully dropped by using the detected voice call state;

In some embodiments of the present application, the determining unit 53 is configured to:

In some embodiments of the present application, the terminal is configured to, after receiving the RAU request, determine that the PS resource cannot be acquired under the WCDMA network if the delivered RAU reject message is received.

In some embodiments of the present application, the detecting unit 52 is further configured to detect, after the end of the voice call of the WCDMA network, whether the terminal returns within a preset time period. LTE network;

The determining unit 53 is further configured to determine that the CSFB fallback fails when the terminal does not return to the LTE network within the preset duration.

In some embodiments of the present application, the detecting unit 52 is configured to:

In practical applications, the execution unit 51, the detecting unit 52, and the determining unit 53 may be implemented by a processor in the fallback result detecting device of the CSFB.

It should be noted that the CSFB fallback result detecting apparatus provided in the above embodiment is only illustrated by the division of each of the foregoing program modules when performing the CSFB fallback result detection. In actual applications, 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. In addition, 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 hardware implementation of each unit in the fallback result detecting device of the CSFB is provided. In order to implement the embodiment of the present application, the embodiment of the present application further provides a CSFB fallback result detecting device. As shown in FIG. 6, the device 60 is provided. A processor 61 and a memory 62 configured to store a computer program capable of running on a processor,

Wherein the processor 61 is configured to execute the computer program:

Detecting a voice call state when the terminal cannot acquire a packet switched PS resource under a WCDMA network;

In some embodiments of the present application, the processor 61 is configured to execute when the computer program is executed:

Detecting that the terminal located in the simulated network environment cannot be obtained under the WCDMA network Voice call status when PS resources.

Of course, in actual application, as shown in FIG. 6, the various components of the device 60 are coupled together by a bus system 63. It will be appreciated that the bus system 63 is used to implement connection communication between these components. The bus system 63 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 63 in FIG.

In an exemplary embodiment, the embodiment of the present application further provides a computer readable storage medium, such as a memory 62 including a computer program, which may be executed by the processor 61 of the CSFB fall result detection device 60 to complete the foregoing. Method described. 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 technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

In the several embodiments provided by the present application, it should be understood that the disclosed method and smart device may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, 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. In addition, 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.

In addition, each functional unit in each embodiment of the present application 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 foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application.

Industrial applicability

The technical solution provided by the embodiment of the present application is to perform a CSFB process based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme is included at least When the CSFB process is executed, the WCDMA network is first dropped; the voice call state when the terminal cannot obtain the PS resource in the WCDMA network is detected; and the detected voice call state is used to determine whether the CSFB is successfully dropped; wherein the first indication is successful The information is carried in an 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 an attach request message to the LTE base station; the CSFB process is received by the terminal The paging message sent by the LTE base station is triggered to be executed. With the solution provided by the embodiment of the present application, when the terminal is rejected when the WCDMA network requests the PS resource, the voice call state in the WCDMA network in the CSFB process is detected, thereby finally determining the CSFB fallback result, so that the subsequent In the process of CSFB, the optimization scheme can be further improved to improve the probability of success of the CSFB process, so as to enhance the user's calling experience.

Claims

A method for detecting a fallback result of a circuit domain fallback CSFB, the method comprising:

Performing a CSFB process based on the first indication information, where the first indication information is used to instruct the terminal to use the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme at least includes first falling back to the wideband code when performing the CSFB process Divisional multiple access WCDMA network;

Detecting a voice call state when the terminal cannot acquire a packet switched PS resource under a WCDMA network;

Using the detected voice call state, determining whether the CSFB is successfully dropped;

The first indication information is carried in an attach accept message sent by the long term evolution LTE base station to the terminal; the attach accept message is sent by the LTE base station after the terminal sends an attach request message to the LTE base station;

The CSFB process is triggered when the terminal receives the paging message sent by the LTE base station.
The method according to claim 1, wherein the determining whether the CSFB is successfully dropped by using the detected voice call state comprises:

When it is detected that the terminal's voice call is interrupted in the WCDMA network, it is determined that the CSFB fallback fails.
The method according to claim 1, wherein the terminal is configured to determine that the PS resource cannot be acquired under the WCDMA network if the RAU reject message is received after receiving the RAU request in the routing area.
The method according to claim 3, wherein the determining whether the CSFB is successfully dropped by using the detected voice call state comprises:

After the RAU reject message is sent to the terminal, if the RAU request sent by the terminal is received, it is determined that the CSFB fallback fails.
The method of claim 1 further comprising:

After the voice call of the WCDMA network ends, detecting whether the terminal returns to the LTE network within a preset time period;

When the terminal does not return to the LTE network within the preset duration, it is determined that the CSFB fallback fails.
The method according to claim 1, wherein the detecting a voice call state when the terminal is unable to acquire a PS resource under a WCDMA network includes:

Detecting a voice call state when the terminal in the simulated network environment cannot obtain PS resources under the WCDMA network.
A CSFB fallback result detecting device, the device comprising:

An execution unit, configured to perform a CSFB process based on the first indication information, where the first indication information is used to indicate that the terminal uses the voice service according to the preset CSFB optimization scheme, where the preset CSFB optimization scheme is at least included in the execution of the CSFB process First fall back to the wideband code division multiple access WCDMA network;

a detecting unit, configured to detect a voice call state when the terminal cannot acquire a packet switched PS resource in a WCDMA network;

a determining unit configured to determine whether the CSFB is successfully dropped by using the detected voice call state;

The first indication information is carried in an 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 an attach request message to the LTE base station;

The CSFB process is triggered when the terminal receives the paging message sent by the LTE base station.
The apparatus according to claim 7, wherein the determining unit is configured to:

When it is detected that the terminal's voice call is interrupted in the WCDMA network, it is determined that the CSFB fallback fails.
The apparatus according to claim 7, wherein the terminal is configured to send the routing area update RAU request, and if the received RAU reject message is received, it is determined that the PS resource cannot be acquired under the WCDMA network.
The apparatus according to claim 9, wherein the determining unit is configured to:

After the RAU reject message is sent to the terminal, if the RAU request sent by the terminal is received, it is determined that the CSFB fallback fails.
The apparatus according to claim 7, wherein

The detecting unit is further configured to: after the end of the voice call of the WCDMA network, detect whether the terminal returns to the LTE network within a preset duration;

The determining unit is further configured to determine that the CSFB fallback fails when the terminal does not return to the LTE network within the preset duration.
The apparatus according to claim 7, wherein the detecting unit is configured to:

Detecting a voice call state when the terminal in the simulated network environment cannot obtain PS resources under the WCDMA network.
A CSFB fallback result detecting apparatus, the apparatus comprising: a processor and a memory configured to store a computer program executable on the processor,

Wherein the processor is configured to perform the steps of the method of any one of claims 1 to 6 when the computer program is run.
A computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to perform the steps of the method of any one of claims 1 to 6.