WO2019061429A1

WO2019061429A1 - Csfb result detection method and device, and computer storage medium

Info

Publication number: WO2019061429A1
Application number: PCT/CN2017/104852
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: CN108135018A; CN108135018B

Abstract

Disclosed in the present invention are a circuit switched fallback (CSFB) result detection method and device, and a computer-readable storage medium. The method comprises: executing a CSFB process on the basis of first indication information, the first indication information being used for indicating to a terminal to use voice service on the basis of a preset CSFB prioritization scheme which at least comprises first falling back to an evolution data only (EVDO) network when executing the CSFB process; detecting the voice call state of the terminal in a single-carrier radio transmission technology (1xRTT) network, the voice call of the terminal in the 1xRTT network being triggered on the basis of a first trigger condition, and the first trigger condition being that the strength of a network signal received in an EVDO cell is less than a set threshold; and determining whether the CSFB succeeds or not by utilizing the detected voice call state, wherein the first indication information is carried by an attach accept message sent by an 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 triggered when the terminal receives a paging message from 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 in the LTE access or camping, and to enable the UE to perform the packet domain (Packet Switch, PS) under 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 Evolution Data Only (EVDO), the occurrence of various abnormal conditions will probabilistically cause the CSFB process to fail, resulting in the call being unable to be connected. It is especially necessary to effectively detect the fallback of CSFB under abnormal scenarios.

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 EVDO network when performing the CSFB process ;

Detecting a voice call state of the terminal in a 1x Radio Transmission Technology (1xRTT) network; the voice call of the terminal in the 1xRTT network is triggered based on a first trigger condition, the first trigger The condition is: the signal strength of the network signal received in the EVDO cell is less than a set threshold;

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 does not initiate an access request to the 1xRTT network within the first preset time period and establishes a voice call, it is determined that the CSFB fallback fails.

When it is detected that the terminal's voice call is interrupted in the 1xRTT network, it is determined that the CSFB fallback fails.

In the above solution, the method further includes:

After the voice call of the 1xRTT network ends, detecting whether the terminal returns to the LTE network within a second preset duration;

Determining that the terminal does not return to the LTE network within the second preset duration CSFB failed to fall back.

In the above solution, the detecting a voice call state of the terminal in a 1xRTT network includes:

Detecting the voice call state of the terminal under the simulated network environment under the 1xRTT 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 evolution data optimization EVDO network;

a detecting unit configured to detect a voice call state of the terminal in a single carrier wireless transmission technology 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on a first trigger condition, where the first trigger condition is : the signal strength of the network signal received in the EVDO cell is less than a set threshold;

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 detecting unit is further configured to: after the end of the voice call of the 1xRTT network, detect whether the terminal returns to the LTE network within a second 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 second preset duration.

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

Detecting a voice call state of the terminal under the simulated network environment under the 1XRTT network.

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, it first falls back to the evolved data optimized EVDO network; detects the voice call state of the terminal in the single carrier wireless transmission technology 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on the first trigger condition. The first triggering condition is: the signal strength of the network signal received by the EVDO cell is less than a set threshold; whether the CSFB is successfully dropped by using the detected voice call state; wherein the first indication information is carried in the The LTE base station sends an attach accept message 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 When the terminal receives the paging message sent by the LTE base station, the method provided by the embodiment of the present invention can detect the voice call in the 1xRTT network during the CSFB process when the signal of the EVDO network received by the terminal is weak. The state, thus finally determining the CSFB fallback result, so that in the subsequent CSFB process, the optimization scheme can be further improved to improve the probability of the CSFB process success, so as to improve 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.

With the continuous expansion of LTE base stations, and some old GSM/TDSCDMA base stations The network configuration and the re-cultivation of the original network are not updated in real time on the signaling side of the base station. The configuration information sent by the network to the UE is inconsistent with the actual deployment situation, resulting in a cross-system of CSFB (InterRAT). ) The voice call has various abnormalities, 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. Therefore, the embodiment of the present application provides a method for detecting a CSFB fallback result when the signal of the EVDO network received by the terminal is weak.

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, first fall back to the EVDO network; detecting the voice call state of the terminal in the 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on the first trigger condition, the first trigger condition The signal strength of the network signal received by the EVDO cell is less than a set threshold; whether the CSFB is successfully dropped by using the detected voice call state; wherein the first indication information is carried in the LTE base station to the terminal The ACK 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 that the terminal receives the paging message sent by the LTE base station Triggered execution.

With the solution provided by the embodiment of the present application, when the signal of the EVDO network received by the terminal is weak, the voice call state in the 1xRTT network during the CSFB process is detected, thereby finally determining the CSFB fallback result, so that the CSFB is subsequently performed. In the process, you can finish further Good optimization schemes to increase the probability of success of the CSFB process 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 EVDO 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 EVDO network under the indication of the network side.

Optionally, the preset CSFB optimization scheme may further include: when the signal strength of the network signal received by the terminal in the EVDO cell is less than a set threshold, initiating an access request to the 1xRTT network and establishing a voice call;

Optionally, the preset CSFB optimization solution may further include: returning to the LTE network after the voice call of the 1xRTT network ends.

Step 102: Detect a voice call state of the terminal under a 1xRTT network.

Here, the voice call of the terminal in the 1xRTT network is triggered based on the first trigger condition, and the first trigger condition is that the signal strength of the network signal received in the EVDO cell is less than a set threshold.

In actual implementation, the signal strength of the network signal received in the EVDO cell may be a Received Signal Strength Indication (RSSI), an Energy Chip/Interfere Other Cell (Ec/Io), or other indicators. The threshold can be based on actual conditions. Set first.

In an optional embodiment, when performing the CSFB process, the network side may send the specified EVDO cell frequency point information to the terminal when the CSFB process is triggered, so that the terminal may be based on the specified EVDO cell frequency point information. Accessing the EVDO network; for example, the specified EVDO cell frequency point information may be carried in a redirect 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 of the terminal under the simulated network environment under the 1xRTT network can 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 does not initiate an access request to the 1xRTT network and establishes a voice call within the first preset duration, determining that the CSFB fails to fall back; wherein the first preset duration may be based on Need to set up.

Optionally, when the network side detects that the terminal requests the resource to the 1xRTT network and establishes a voice call, if the voice call interruption (non-persistent) of the terminal in the 1xRTT network is detected, the CSFB fallback is determined to be failed.

Optionally, when the network side detects that the terminal's voice call on the 1xRTT network is not interrupted, that is, the terminal keeps the voice call after the voice call of the 1xRTT network is established, after the voice call of the 1xRTT network ends, detecting whether the terminal is in the second pre- The LTE network is returned within the duration; when the terminal does not return to the LTE network within the second 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 the second preset time period, it is determined that the CSFB fallback is successful.

The second preset duration can be set as needed.

Here, in actual application, the related signaling may be used to detect whether the terminal requests resources to the 1xRTT network and establish a voice call; accordingly, the related signaling may be used to detect whether the terminal's voice call on the 1xRTT network is interrupted. The related signaling is used to detect whether the terminal returns to the LTE network within the second preset duration.

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 evolved data optimized EVDO network; detects the voice call state of the terminal under the single carrier wireless transmission technology 1xRTT network; the voice call of the terminal under the 1xRTT network is triggered based on the first trigger condition, The first triggering condition is: the signal strength of the network signal received by the EVDO cell is less than a set threshold; whether the CSFB is successfully dropped by using the detected voice call state; wherein the first indication information is carried in the LTE base station The attach accept message sent 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 that the terminal receives the LTE base station sends When the paging message is triggered, the EVDO that can be received at the terminal is adopted by the solution provided by the embodiment of the present application. When the signal of the network is weak, the voice call state in the 1xRTT network in the CSFB process is detected, and finally the CSFB fallback result is finally determined. Thus, in the subsequent CSFB process, the optimization scheme can be further improved to improve the success of the CSFB process. Probability to enhance the user's calling experience.

In addition, detecting the voice call state of the terminal in the simulated network environment under the 1xRTT network, the simulation method does not require a staff to go to the site, and other factors affecting the detection can be removed, thereby greatly reducing personnel costs, and simultaneously Can eliminate the implementation in this application The effect of other factors on the test results in the scenario described in the example.

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, an EVDO cell, and a 1xRTT cell. The LTE SIB is configured with EVDO neighbor cell information, and the 1xRTT neighbor cell is configured. Information, LTE neighbor cell information and 1xRTT neighbor cell information are configured in the EVDO SIB.

The abnormal scenario of the application embodiment is: when the signal strength of the network signal received by the EVDO cell is less than the set threshold, the UE starts to initiate an access request to the 1xRTT network and establish a voice call based on the 1xRTT. In this case, the UE can still complete the CSFB by using the resources of the 1xRTT network, thereby verifying 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) to the UE to start the CSFB process.

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

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 voice signal of the network signal received by the EVDO cell is less than the set threshold, and cannot perform a voice call in the EVDO network. In this case, the UE needs to initiate an access request of the 1xRTT network and establish the first preset duration. Voice calls based on 1xRTT networks.

In actual implementation, the EVDO cell signal can be simulated by the simulation platform for simulating the weak signal of the EVDO cell;

When determining that the signal strength of the network signal received by the EVDO cell is less than a set threshold, the UE may forward to the 1xRTT network to request the CS resource to establish a voice call according to the pre-configured neighbor information.

Step 203: Detect whether the UE finds the 1xRTT network resource and establishes a voice call within the first preset duration. If yes, step 204 is performed. Otherwise, the CSFB fallback fails, that is, the preset CSFB optimization scheme fails.

Step 204: Detect whether the UE keeps the voice call after the voice call is established. If yes, execute step 205. Otherwise, the CSFB fallback fails, that is, the preset CSFB optimization scheme fails.

Step 205: Detect whether the UE returns to the LTE network within the second preset duration 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 1xRTT network call, the UE should quickly return to the LTE network.

When the UE is unable to return to the LTE network within the second preset duration, the UE may attempt to perform a Routing Area Update (RAU) process 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 evolution data optimization EVDO network;

The detecting unit 52 is configured to detect a voice call state of the terminal in a single carrier wireless transmission technology 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on a first trigger condition, the first trigger condition The signal strength of the network signal received in the EVDO cell is less than a set threshold;

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 detecting unit 52 is further configured to: after the end of the voice call of the 1×RTT network, detect whether the terminal returns to the LTE network within a second preset duration;

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 second 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, when the CSFB fallback result detection device provided by the above embodiment performs the CSFB fallback result detection, only the division of each of the above program modules is used as an example, and the actual In the application, the above processing allocation can be completed by different program modules as needed, 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:

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 evolved data when performing the CSFB process Optimize the EVDO network;

Detecting a voice call state of the terminal in a single carrier wireless transmission technology 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on a first trigger condition, and the first trigger condition is: receiving in an EVDO cell The signal strength of the network signal is less than a set threshold;

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

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

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) Memory), read only memory (ROM, Read Only Memory), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), EEPROM (Electrically Erasable Programmable Read-Only Memory), Flash Memory, Magnetic Surface Memory, Optical Disk, or CD-ROM (Compact Disc Read-Only Memory) 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 may be within the technical scope disclosed in the present application. It is easy to think of changes or substitutions that are covered by the scope of this application.

Industrial applicability

The technical solution provided by the embodiment of the present application detects the voice call state of the terminal in the 1XRTT network in the process of performing the CSFB based on the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service; the terminal is in the 1XRTT network. The voice call is triggered when the frequency of the specified WCDMA cell frequency is failed for the specified WCDMA cell; the specified WCDMA cell frequency information is carried in the redirect command sent by the LTE base station; and the detected voice call state is used. Determining whether the CSFB is successfully dropped; wherein the indication information is carried in an attach accept message sent by the LTE base station to the terminal; the attach accept message is after the terminal sends an attach request message to an LTE base station The LTE base station sends the RRC base station, and the CSFB process is triggered when the terminal receives the paging message sent by the LTE base station, and the solution provided by the embodiment of the present application can configure the frequency of the wrong WCDMA cell on the network side. The information causes the terminal to detect the language under the 1XRTT network in the CSFB process in the scenario where the specified WCDMA cell frequency sweep fails. Call status, and ultimately determine the results of CSFB down, so that in the course of the subsequent conduct CSFB, it is possible to further improve the optimization scheme to improve the probability of success CSFB process in order to enhance the user's call 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 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 evolved data when performing the CSFB process Optimize the EVDO network;

Detecting a voice call state of the terminal in a single carrier wireless transmission technology 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on a first trigger condition, and the first trigger condition is: receiving in an EVDO cell The signal strength of the network signal is less than a set threshold;

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.
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 does not initiate an access request to the 1xRTT network within the first preset time period and establishes a voice call, it is determined that the CSFB fallback fails.
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 1xRTT network, it is determined that the CSFB fallback fails.
The method of claim 1 wherein the method further comprises:

After the voice call of the 1xRTT network ends, detecting whether the terminal is in the second pre- Return to the LTE network within a certain period of time;

When the terminal does not return to the LTE network within the second preset duration, it is determined that the CSFB fallback fails.
The method of claim 1, wherein the detecting a voice call state of the terminal under a 1xRTT network comprises:

Detecting the voice call state of the terminal under the simulated network environment under the 1xRTT 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 evolution data optimization EVDO network;

a detecting unit configured to detect a voice call state of the terminal in a single carrier wireless transmission technology 1xRTT network; the voice call of the terminal in the 1xRTT network is triggered based on a first trigger condition, where the first trigger condition is : the signal strength of the network signal received in the EVDO cell is less than a set threshold;

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 6, wherein the determining unit is configured to:

When it is detected that the terminal does not initiate access to the 1xRTT network within the first preset duration, please When the voice call is established and established, it is determined that the CSFB fallback fails.
The apparatus according to claim 6, wherein the determining unit is configured to:

When it is detected that the terminal's voice call is interrupted in the 1xRTT network, it is determined that the CSFB fallback fails.
The apparatus according to claim 6, wherein

The detecting unit is further configured to: after the end of the voice call of the 1xRTT network, detect whether the terminal returns to the LTE network within a second 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 second preset duration.
The apparatus according to claim 6, wherein the detecting unit is configured to:

Detecting a voice call state of the terminal under the simulated network environment under the 1XRTT 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 5 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 5.