WO2018072465A1

WO2018072465A1 - Method and device for switching voice service

Info

Publication number: WO2018072465A1
Application number: PCT/CN2017/089148
Authority: WO
Inventors: 王诚
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-10-20
Filing date: 2017-06-20
Publication date: 2018-04-26
Also published as: CN107969018B; CN107969018A

Abstract

The disclosure provides a method and device for switching a voice service. The method comprises: acquiring voice quality of a current VOLTE call; determining, according to the voice quality, an equivalent measurement value of a signal in an LTE cell; determining whether the equivalent measurement value satisfies a requirement of transmitting a measurement report; and if so, transmitting, to a network side, the measurement report, so as to trigger to switch to a WCDMA network. The disclosure resolves an issue in the prior art of constant poor call quality resulting from not switching to a WCDMA network despite the poor call quality, achieving technical effects of enhanced user experience and ensuring call quality effectively.

Description

Voice service switching method and device

Technical field

The present disclosure relates to the field of mobile communications, and in particular to a voice service switching method and apparatus.

Background technique

SRVCC (Single Radio Voice Call Continuity) is a VoLTE (Voice over LTE, IP data transmission technology) voice service continuity scheme proposed by 3GPP, mainly for single radio UE (user). The terminal) ensures voice call continuity when moving between the LTE/Pre-LTE network and the 2G/3G CS network, that is, guarantees smooth switching between the IMS-controlled VoIP voice and the CS domain voice by the single radio UE.

However, the handover threshold configuration of the E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) configuration in the current region is slightly different. Some regional handover thresholds are too low, which causes the SRVCC to lag. In SRVCC Before the occurrence of the LTE (Long Term Evolution) network, the quality and efficiency of data transmission have been seriously degraded. As a result, users continue to hear the other party, and the voice quality of the voice is intermittently dropped. Even the terminal has already experienced LTE network. And dropped calls, and the voice service still has not switched to the 2G/3G CS network.

For example, the switching threshold of some regional network configurations is -121dB. At -120dB, the signal demodulation of the terminal has become difficult, the packet loss rate is increased, and the call quality is already too poor. In fact, a better choice at this time is SRVCC cut into 2G. /3G cell, but because the signal measurement threshold is not met, the network cannot trigger the SRVCC process.

In response to the above problems, no effective solution has been proposed yet.

Summary of the invention

The present disclosure provides a voice service switching method and apparatus, which are used to solve the problem that the quality of the call is poor and the handover quality to the WCDMA (Wideband Code Division Multiple Access) network is poor. The problem.

To solve the above technical problem, in one aspect, the disclosure provides a voice service switching method, where the method includes:

Get the voice quality of the current VOLTE call;

Determining a measurement equivalent value of the LTE cell signal according to the voice quality;

Determining whether the measured equivalent value satisfies the requirement of transmitting the measurement report, and if so, transmitting a measurement report to the network side to trigger the SRVCC.

In an embodiment, determining whether the measured equivalent value satisfies the requirements for transmitting the measurement report includes:

Determining whether a difference between the measured equivalent value and the measured value of the LTE cell signal is less than a preset difference;

If the preset difference is less than, the measured value is used to replace the measured value;

Determining whether the measured value is less than a preset SRVCC switching threshold;

If less than, the measurement report is sent to the network side to trigger SRVCC.

In an embodiment, obtaining the voice quality of the current VOLTE call includes:

Obtaining the voice quality degradation degree and the voice quality degradation duration of the current VOLTE call;

Determining the measured equivalent value of the LTE cell signal according to the voice quality, including:

The measurement equivalent is determined based on the degree of degradation of the voice quality and the duration of the voice quality degradation.

In an embodiment, obtaining the degree of degradation of the voice quality includes:

The degree of degradation of the voice quality is determined by calculating the frequency of interruption of the sound and the frequency at which the user repeats the preset vocabulary.

In an embodiment, determining the measured equivalent value of the LTE cell signal according to the voice quality, including:

Determining the measurement equivalent value of the LTE cell signal by using a preset voice quality and measurement equivalent value comparison table;

Alternatively, the measurement equal value of the LTE cell signal is determined by a preset voice quality and a measurement equivalent relationship.

Determining whether the signal quality of the LTE cell is lower than a preset first threshold;

Determining whether the signal quality of the WCDMA cell is higher than a preset second threshold;

If the LTE cell signal quality is lower than the preset first threshold, and the WCDMA cell signal quality is higher than the preset second threshold, the voice quality of the current VOLTE call is obtained.

In an embodiment, after determining whether the measured equivalent value satisfies the requirement of transmitting the measurement report, the method further includes:

The measurement report is generated according to a big data voice quality distribution map acquired from the cloud.

In an embodiment, the method further includes:

The GPS location, cell information, and SRVCC switching threshold of the terminal are uploaded to the cloud to form the big data voice quality distribution map.

In another aspect, the present disclosure provides a voice service switching apparatus, the apparatus comprising:

Obtaining a module, configured to obtain a voice quality of a current VOLTE call;

a determining module, configured to determine a measured equivalent value of the LTE cell signal according to the voice quality;

The sending module is configured to determine whether the measured equivalent value satisfies the requirement of sending the measurement report, and if yes, send a measurement report to the network side to trigger the SRVCC.

In an embodiment, the sending module includes:

a first determining unit, configured to determine whether a difference between the measured equivalent value and the measured value of the LTE cell signal is less than a preset difference;

Substituting the module, the method is configured to replace the measured value with the measured equivalent value if the determination is less than the preset difference value;

a second determining unit, configured to determine whether the measured value is less than a preset SRVCC switching threshold;

The transmitting unit, configured to transmit the measurement report to the network side to trigger the SRVCC if the determination is less than.

In an embodiment, the acquiring module is configured to obtain a voice quality degradation degree and a voice quality degradation duration of the current VOLTE call;

The determining module is configured to determine the measurement equivalent value according to the voice quality degradation degree and the voice quality degradation duration.

In an embodiment, the acquiring module is configured to determine the degree of degradation of the voice quality by calculating an interruption frequency of the sound and a frequency at which the user repeats the preset vocabulary.

In an embodiment, the determining module is configured to determine a measurement equivalent value of the LTE cell signal by using a preset voice quality and measurement equivalent value comparison table; or, by using a preset voice quality and a measurement equivalent value correspondence manner, The measured equivalent value of the LTE cell signal is determined.

In an embodiment, the obtaining module comprises:

a third determining unit, configured to determine whether the LTE cell signal quality is lower than a preset first threshold;

a fourth determining unit, configured to determine whether the signal quality of the WCDMA cell is higher than a preset second threshold;

And an acquiring unit, configured to acquire a voice quality of the current VOLTE call if the LTE cell signal quality is lower than the preset first threshold, and the WCDMA cell signal quality is higher than the preset second threshold.

In an embodiment, the sending module is further configured to generate the measurement report according to the big data voice quality distribution map acquired from the cloud after determining whether the measurement equivalent value satisfies the requirement of transmitting the measurement report.

In an embodiment, the method further includes an uploading module, configured to upload the GPS location of the terminal, the cell information, and the SRVCC switching threshold to the cloud to form the big data voice quality distribution map.

In still another aspect, the present disclosure also provides a storage medium configured to store program code, the program code being configured to perform a voice service switching method according to any of the above embodiments.

The present disclosure has the following beneficial effects: determining whether to send a measurement report according to the voice quality of the current VOLTE call, instead of determining whether to send a measurement report according to the measured value of the LTE cell signal, that is, in the case of poor signal quality, The measurement report solves the problem that the quality of the call is poor and the call quality is poor, and the call quality is poor, and the technical effect of effectively improving the user experience is achieved.

DRAWINGS

1 is a flowchart of a method for switching a voice service in an embodiment of the present disclosure;

2 is a schematic structural diagram of a switching device in an embodiment of the present disclosure;

3 is a flowchart of an optimized SRVCC method in an embodiment of the present disclosure;

4 is a structural block diagram of a voice service switching apparatus in an embodiment of the present disclosure.

detailed description

In order to solve the problem that the quality of the call is poor and the call quality is poor, and the call quality is poor, the present disclosure provides a voice service switching method, which is described below with reference to the accompanying drawings and embodiments. Further details are disclosed in the public. It is understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to be limiting.

As shown in FIG. 1, the voice service switching method may include the following steps:

Step 101: Acquire a voice quality of a current VOLTE call.

Considering that when the call quality is seriously degraded, there are some obvious voice features, such as: intermittent sound, user repetitive call, in this case, the voice recognition technology can be used to judge the degree of voice quality degradation, which is the measurement of signal quality in the SRVCC process. The value is corrected.

Optionally, the measurement equal value may be determined according to a voice quality degradation degree and a voice quality degradation duration. In an implementation manner, the voice may be determined by calculating an interruption frequency of the voice and a frequency of the user repeating the preset vocabulary. The degree of quality degradation.

For example, the degree of decline in speech quality can be determined by calculating the frequency of interruption of the sound and the frequency at which the user repeats a specific vocabulary (for example, feeding...Hello...Hi), wherein the interruption frequency, the repetition frequency, and the degree of degradation of the speech quality are proportional, The degree of deterioration in speech quality can be expressed by a proportional coefficient a.

The operation of obtaining the voice quality of the current VOLTE call may be triggered only when certain conditions are met, and may not be performed all the time, for example, when the LTE cell signal is poor and the WCDMA cell signal is good. Triggers an action to send a measurement report. In an embodiment, it may be determined whether the LTE cell signal quality is lower than a preset first threshold; determining whether the WCDMA cell signal quality is higher than a preset second threshold; if the LTE cell signal quality is lower than the preset first And a threshold value, and the WCDMA cell signal quality is higher than the preset second threshold, and the voice quality of the current VOLTE call is obtained. In this way, the system load can be effectively reduced.

Step 102: Determine a measurement equivalent value of the LTE cell signal according to the voice quality.

The manner in which the equal value is measured by the voice quality is varied, as long as the detected voice quality can be reasonably matched with the value of the measurement, for example, it may be a preset comparison table, that is, by a preset The value comparison table of the voice quality and the measurement value determines the measurement equal value of the LTE cell signal; or the preset correspondence relationship manner, that is, the preset LTE cell signal is determined by the preset voice quality and the measurement equivalent value correspondence relationship. Measure equal value.

However, the several methods listed above are only a schematic description, and other manners may be used. For example, the conversion mode may be a mapping table set according to an empirical value, or may be a linear relationship between voice call quality and LTE signal measurement. The conversion algorithm can also be an average algorithm for collecting data on the live network. In the current network, when the mobile phone reaches a certain level of voice quality multiple times, the LTE signal measurement value at the time is recorded to obtain an equivalent LTE measurement value. It may also be an optimal algorithm, that is, in the current network, when the mobile phone reaches a certain degree of voice quality multiple times, the LTE signal measurement value at the time is recorded to select the worst LTE signal measurement value as the equivalent LTE measurement value, specific Determination method This application is not limited and can be selected according to actual conditions.

Step 103: Determine whether the measurement equivalent value satisfies the requirement of transmitting the measurement report, and if yes, send a measurement report to the network side to trigger handover to the WCDMA network.

Optionally, it may be determined whether a difference between the measured equivalent value and the measured value of the LTE cell signal is less than a preset difference; if less than the preset difference, replacing the measured value with the measured equivalent value a value; determining whether the measured value is less than a preset SRVCC switching threshold; if less, transmitting the measurement report to the network side to trigger a handover to a WCDMA network.

In order to optimize the SRVCC handover process based on the big data analysis, the measurement report may be generated according to the big data voice quality distribution map acquired from the cloud after determining whether the measurement equivalent value satisfies the requirement of transmitting the measurement report. Optionally, each terminal may upload the GPS location of the terminal, the cell information, and the SRVCC switching threshold to the cloud to form the big data voice quality distribution map.

The foregoing voice service switching method is described in conjunction with a specific embodiment. However, it is to be noted that the specific embodiment is only for better explanation of the disclosure, and does not constitute an undue limitation of the disclosure.

The following describes the related SRVCC process as follows. The related SRVCC process may include the following steps:

S1: The terminal successfully performs the IMS service registration, and the network sends the SRVCC handover threshold to the terminal.

S2: The terminal is establishing or has established a VoIP call on the LTE network, and the terminal detects whether the LTE cell and the 2G/3G CS cell signal quality meet the threshold (where the LTE cell signal is lower than the e-UTRAN threshold, and the 2G/3G CS cell is high) At the UTRAN threshold, if the duration is met and the specified length of time is reached, the measurement report is reported;

S3: After receiving the measurement report, the network establishes a 2G/3G CS domain voice bearer, triggers the SRVCC command, and the mobile phone switches to the 2G/3G cell, and the call or the call continues on the 2G/3G cell.

Thus, the SRVCC instruction trigger depends on two factors:

1) The SRVCC switching threshold sent by the network;

2) Measurement results of signal quality.

In this example, a call quality correction factor is introduced on the measurement report generation of the mobile phone RF signal measurement, and a measurement report is issued when the call quality is poor to accelerate the SRVCC process.

Each terminal can submit data such as GPS location, cell information, and handover threshold to the cloud, and the big data server in the cloud filters and calculates the data to form an accurate VoLTE voice quality distribution map, and the data is pushed to the terminal according to the real-time location information of the terminal. The terminal extracts big data to optimize the SRVCC handover process.

In this example, a switching device is provided. As shown in FIG. 2, the following modules may be included:

Module A: call speech recognition real-time detection module, module B: measurement report correction value evaluation module, module C: LTE cell signal 3G/2G cell signal measurement module, module D: big data extraction comparison analysis module, module E: measurement report Generating module, module F: GPS location, cell information, switching threshold data submission module.

The following describes the functions performed by the above modules:

1) The “Call Speech Recognition Real-Time Detection Module” identifies the degree of degradation of voice quality and the duration of voice quality degradation through voice recognition technology.

Optionally, the degree of degradation of the speech quality may be determined by calculating the frequency of the interruption of the sound and the frequency at which the user repeats the specific vocabulary (eg, feeding...Hello...Hi), and the frequency of the interruption, the repetition frequency, and the degree of degradation of the speech quality are proportional, thus The degree of deterioration in speech quality can be expressed by a proportional coefficient a.

2) The “Call Speech Recognition Real-Time Detection Module” inputs the voice quality degradation degree and the voice quality degradation duration to the “Measurement Report Correction Value Evaluation Module” periodically, and the “LTE Cell Signal 3G/2G Cell Signal Measurement Module” will also measure The result is input to the “Measurement Report Correction Value Evaluation Module”, and the “Measurement Report Correction Value Evaluation Module” will also obtain the SRVCC switching threshold value;

The measurement report correction value evaluation module may pre-implant the correspondence table between the voice quality and the evaluation measurement report signal value, for example, when the voice quality degradation degree is n%, and the voice quality degradation duration is m, the equivalent LTE cell signal quality is T. The correspondence in the table can be adjusted according to the actual experience value and the actual effect configuration. The equivalent LTE signal value is calculated, and an equivalent LTE signal measurement value is input to the "measurement report generation module" at a suitable timing.

When the signal quality of the LTE cell is lower than the X value and the signal quality of the 3G/2G cell is higher than the Y value, the measurement report correction value evaluation module determines that the terminal is currently in a weak region of the LTE signal, and the 3G/2G signal strong region is highly likely to have an SRVCC switchover. .

Wherein, the setting of the X value is lower than the threshold of the SRVCC e-UTRAN, and the setting of the Y value is lower than the threshold of the SRVCC UTRAN.

At this time, the measurement report correction value evaluation module evaluates the equivalent LTE cell measurement signal value according to the voice quality degradation degree n% value and the voice quality degradation duration m value, and determines whether the equivalent value and the actual LTE cell measurement value are allowed. Within the alternative difference, if yes, the LTE cell signal 3G/2G cell signal measurement module is used to extract the input of the comparison analysis module to the big data;

3) The big data extraction comparison analysis module extracts the cloud big data output to the measurement report generation module.

4) The measurement report generation module analyzes and compares the measurement data.

Optionally, comparing the cloud big data, if it is within a reasonable range, generating a more realistic measurement report to trigger the network to perform SRVCC switching.

5) The GPS location, cell information, and handover threshold data submission module submit the measurement data to the cloud.

In the above manner, the quality of the voice call is considered, and the user experience is improved.

Optionally, the foregoing switching device may perform SRVCC optimization according to the method steps shown in FIG. 3:

S1: The voice quality degradation degree and the falling duration are collected through the voice recognition module.

When the VOLTE call is in progress, the voice call quality is monitored by the “call voice recognition real-time detection module”, wherein the voice call quality includes: the voice quality degradation degree and the voice quality degradation duration, and is periodically input to the “measurement report correction value evaluation module”. Index value.

S2: Collect LTE cell signals and 3G/2G cell signals.

When the VOLTE call is in progress, the measurement result is periodically input to the "measurement report correction value evaluation module" by the "LTE cell signal 3G/2G cell signal measurement module".

S3: Determine whether the terminal is in an SRVCC prone state.

When the terminal is in a VOLTE call, and the current LTE cell signal is weak (for example, the RSRP is lower than -110 dB) and the WCDMA cell signal is stronger (for example, the RSCP is higher than -90 dB), and the network has issued the SRVCC handover threshold, this It indicates that the terminal is prone to SRVCC switching at this time, and only waits for the measurement result to satisfy the switching condition. At this time, the “measurement report correction value evaluation module” starts to convert the call voice quality into an equivalent LTE cell signal measurement value, and calculates a difference from the actual LTE cell signal measurement value.

S4: Evaluating an equivalent LTE signal reception value according to the RTP packet transmission rate and the packet loss rate.

The “Measurement Report Correction Value Evaluation Module” has a configurable voice quality and LTE signal mapping table. The correspondence is set according to the empirical value. For example, in a certain area of the live network, the actual measured network signal of the terminal is -115dB. However, since the actual call experience of the user is very poor, the sound is intermittent, and the peer sound is often not heard, then the equivalent LTE signal received value according to the mapping table is -120 dB.

S5: Determine whether the difference between the equivalent LTE signal received value and the actual measured value is in an alternative range.

The difference between the received value of the LTE signal and the actual measured value may not be too large. Otherwise, excessive correction is formed, which is too far from the real situation. Therefore, the difference judgment needs to be performed, wherein the difference range can be configured.

S6: Provide the LTE cell measurement equivalent value to the measurement report generation module, instead of the actual measurement value.

The measurement report generation module compares the value of the LTE cell measurement with the SRVCC threshold.

S7: Download the cloud big data and compare the measurement results. If it is within a reasonable range, the terminal sends a measurement report to the network.

S8: Submit the measurement data, GPS and cell information to the cloud.

In the above example, the “Measurement Report Correction Value Evaluation Module” has a built-in voice call quality and an equivalent LTE signal measurement value conversion system. The conversion method may be a mapping table set according to an empirical value, or may be a voice call quality and an LTE signal. Measuring the linear relationship conversion; it can also be the average algorithm for collecting data on the live network. In the current network, when the mobile phone reaches a certain level of voice quality multiple times, the LTE signal measurement value at the time is averaged to obtain an equivalent LTE measurement. value. It may also be an optimal algorithm, that is, in the current network, when the mobile phone reaches a certain degree of voice quality multiple times, the LTE signal measurement value at the time is recorded to select the worst LTE signal measurement value as the equivalent LTE measurement value, specific Determination method This application is not limited and can be selected according to actual conditions.

Based on the same inventive concept, a voice service switching apparatus is also provided in the embodiment of the present disclosure, as described in the following embodiments. The voice service switching device is similar to the voice service switching method. For the implementation of the voice service switching device, refer to the implementation of the voice service switching method. As used hereinafter, the term "unit" or "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated. 4 is a structural block diagram of a voice service switching apparatus according to an embodiment of the present disclosure. As shown in FIG. 4, the method may include: an obtaining module 401, a determining module 402, and a sending module 403. The structure will be described below.

The obtaining module 401 is configured to obtain the voice quality of the current VOLTE call.

The determining module 402 is configured to determine a measured equivalent value of the LTE cell signal according to the voice quality;

The sending module 403 is configured to determine whether the measured equivalent value satisfies the requirement of sending the measurement report, if satisfied, Then, a measurement report is sent to the network side to trigger a handover to the WCDMA network.

In an embodiment, the sending module 403 may include: a first determining unit, configured to determine whether a difference between the measured equivalent value and the measured value of the LTE cell signal is less than a preset difference; The second determining unit is configured to determine whether the measured value is less than a preset SRVCC switching threshold, in a case that the determining is smaller than the preset difference, the second determining unit is configured to determine whether the measured value is less than a preset SRVCC switching threshold; The measurement report is sent to the network side to trigger SRVCC if it is set to be less than determined.

In an embodiment, the obtaining module 401 may be configured to obtain a voice quality degradation degree and a voice quality degradation duration of the current VOLTE call, and the determining module 402 may be configured to continue according to the voice quality degradation degree and the voice quality degradation. Time, determining the equivalent value of the measurement.

In an embodiment, the obtaining module 401 may be configured to determine the degree of degradation of the voice quality by calculating an interruption frequency of the sound and a frequency at which the user repeats the preset vocabulary.

In an embodiment, the determining module 402 may be configured to determine a measurement equivalent value of the LTE cell signal by using a preset voice quality and measurement equivalent value comparison table; or, by using a preset voice quality and a measurement equivalent value correspondence relationship Determine the measurement equivalent value of the LTE cell signal.

In an embodiment, the obtaining module 401 may include: a third determining unit, configured to determine whether the LTE cell signal quality is lower than a preset first threshold; and fourth determining unit, configured to determine whether the WCDMA cell signal quality is higher than a preset a second threshold; an acquiring unit, configured to acquire a current VOLTE call if the LTE cell signal quality is lower than the preset first threshold, and the WCDMA cell signal quality is higher than the preset second threshold Voice quality.

In an embodiment, the sending module 403 may be further configured to generate the measurement report according to the big data voice quality profile acquired from the cloud after determining whether the measured equivalent value satisfies the requirement of transmitting the measurement report.

In an embodiment, the voice service switching apparatus may further include an uploading module, configured to upload the GPS location, the cell information, and the SRVCC switching threshold of the terminal to the cloud to form the big data voice quality distribution map.

In another embodiment, a software is provided that is configured to perform the technical solutions described in the above embodiments and preferred embodiments.

In another embodiment, a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.

From the above description, it can be seen that the embodiment of the present disclosure achieves the following technical effects: determining whether to send a measurement report according to the voice quality of the current VOLTE call, instead of determining whether to send a measurement report based only on the measured value of the LTE cell signal. That is, in the case of poor signal quality, the measurement report is initiated, thereby solving the problem that the quality of the call is poor and the call quality is poor, and the call quality is poor. Quality, the technical effect of improving the user experience.

It will be apparent to those skilled in the art that the various modules or steps of the above-described embodiments of the present disclosure may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed across multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from this The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, embodiments of the present disclosure are not limited to any specific combination of hardware and software.

While the preferred embodiment of the present disclosure has been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the present disclosure should not be limited to the embodiments described above.

Industrial applicability

The voice service switching method and apparatus provided by the embodiments of the present disclosure solves the problem that the quality of the call is poor when the quality of the channel is poor and the WCDMA network is not switched. The poor problem has achieved the technical effect of effectively guaranteeing the quality of the call and improving the user experience.

Claims

A voice service switching method includes:

Get the voice quality of the current VOLTE call;

Determining a measurement equivalent value of the LTE cell signal according to the voice quality;

Determining whether the measured equivalent value satisfies the requirement of transmitting the measurement report, and if so, transmitting a measurement report to the network side to trigger handover to the WCDMA network.
The method of claim 1 wherein determining whether the measured equivalent value satisfies a requirement to transmit a measurement report comprises:

Determining whether a difference between the measured equivalent value and the measured value of the LTE cell signal is less than a preset difference;

If the preset difference is less than, the measured value is used to replace the measured value;

Determining whether the measured value is less than a preset SRVCC switching threshold;

If less than, the measurement report is sent to the network side to trigger a handover to the WCDMA network.
The method of claim 1 wherein:

Get the voice quality of the current VOLTE call, including:

Obtaining the voice quality degradation degree and the voice quality degradation duration of the current VOLTE call;

Determining the measured equivalent value of the LTE cell signal according to the voice quality, including:

The measurement equivalent is determined based on the degree of degradation of the voice quality and the duration of the voice quality degradation.
The method of claim 3, wherein obtaining the degree of degradation of the voice quality comprises:

The degree of degradation of the voice quality is determined by calculating the frequency of interruption of the sound and the frequency at which the user repeats the preset vocabulary.
The method of claim 1, wherein determining the measured equivalent value of the LTE cell signal based on the voice quality comprises:

Determining the measurement equivalent value of the LTE cell signal by using a preset voice quality and measurement equivalent value comparison table;

Alternatively, the measurement equal value of the LTE cell signal is determined by a preset voice quality and a measurement equivalent relationship.
The method according to any one of claims 1 to 5, wherein acquiring the voice quality of the current VOLTE call comprises:

Determining whether the signal quality of the LTE cell is lower than a preset first threshold;

Determining whether the signal quality of the WCDMA cell is higher than a preset second threshold;

If the LTE cell signal quality is lower than the preset first threshold, and the WCDMA cell signal quality is higher than the preset second threshold, the voice quality of the current VOLTE call is obtained.
The method according to any one of claims 1 to 5, wherein after determining whether the measurement equivalent value satisfies the requirement of transmitting a measurement report, the method further comprises:

The measurement report is generated according to a big data voice quality distribution map acquired from the cloud.
The method of claim 7 wherein the method further comprises:

The GPS location, cell information, and SRVCC switching threshold of the terminal are uploaded to the cloud to form the big data voice quality distribution map.
A voice service switching device includes:

Obtaining a module, configured to obtain a voice quality of a current VOLTE call;

a determining module, configured to determine a measured equivalent value of the LTE cell signal according to the voice quality;

The sending module is configured to determine whether the measured equal value satisfies the requirement of transmitting the measurement report, and if yes, send a measurement report to the network side to trigger the handover to the WCDMA network.
The apparatus of claim 9, wherein the transmitting module comprises:

a first determining unit, configured to determine whether a difference between the measured equivalent value and the measured value of the LTE cell signal is less than a preset difference;

Substituting the module, the method is configured to replace the measured value with the measured equivalent value if the determination is less than the preset difference value;

a second determining unit, configured to determine whether the measured value is less than a preset SRVCC switching threshold;

The sending unit is configured to send the measurement report to the network side to trigger the SRVCC if the determination is less than.
The device of claim 9 wherein:

The acquiring module is configured to obtain a voice quality degradation degree and a voice quality degradation duration of the current VOLTE call;

The determining module is configured to determine the measurement equivalent value according to the voice quality degradation degree and the voice quality degradation duration.
The apparatus according to claim 11, wherein the acquisition module is configured to determine the degree of degradation of the voice quality by calculating an interruption frequency of the sound and a frequency at which the user repeats the preset vocabulary.
The apparatus according to claim 9, wherein the determining module is configured to determine a measurement equivalent value of the LTE cell signal by using a preset voice quality and measurement equivalent value comparison table; or, by adopting preset voice quality and measurement, etc. The value correspondence relationship determines the measurement equivalent value of the LTE cell signal.
The apparatus according to any one of claims 9 to 13, wherein the acquisition module comprises:

a third determining unit, configured to determine whether the LTE cell signal quality is lower than a preset first threshold;

a fourth determining unit, configured to determine whether the signal quality of the WCDMA cell is higher than a preset second threshold;

And an acquiring unit, configured to acquire a voice quality of the current VOLTE call if the LTE cell signal quality is lower than the preset first threshold, and the WCDMA cell signal quality is higher than the preset second threshold.
The apparatus according to any one of claims 9 to 13, wherein the transmitting module is further configured to, according to whether the measurement equivalent value satisfies the requirement of transmitting the measurement report, according to the big data voice quality distribution acquired from the cloud Diagram, generating the measurement report.
The apparatus according to claim 15, further comprising an uploading module configured to upload the GPS location of the terminal, the cell information, and the SRVCC switching threshold to the cloud to form the big data voice quality profile.
A storage medium, configured to store a program code, the program code being configured to perform the voice service switching method of any one of claims 1 to 8.