CN109769262B - VoLTE call recovery method and terminal equipment - Google Patents

Abstract

The embodiment of the present invention discloses a method and a terminal device for resuming a VoLTE call. The method includes: if a radio link failure RLF occurs during a VoLTE call, acquiring a first target cell whose RSRP is greater than Or equal to the target threshold value and less than or equal to the minimum threshold value Qrxlevmin for the terminal device to receive cell signals; reset the RSRP of the first target cell based on the Qrxlevmin, and the reset RSRP of the first target cell is greater than the set Described Qrxlevmin. The method in the embodiment of the present invention can avoid the problem of call drop caused by the RSRP of the cell being lower than the Qrxlevmin configured by the network equipment.

Description

Method and terminal equipment for VoLTE call recovery

technical field

The present application relates to the technical field of communication, and more specifically relates to a method and a terminal device for resuming a VoLTE call.

Background technique

During a Voice over Long-Term Evolution (VoLTE) call, the terminal device will start the cell reconstruction process after a radio link failure (Radio Link Failure, RLF) occurs due to various reasons: 1) Start the T311 timer , perform cell synchronization to camp on, if a suitable cell can be found for synchronization and camp on, then turn off the T311 timer and start the T301 timer, and the terminal device initiates a re-establishment request; 2) If the T311 timer or the T301 timer times out, then The terminal device enters the idle state, searches the network again, and seeks a suitable cell for synchronization and camping. If no suitable cell is found within a certain period of time, the call will be dropped due to the timeout of the real-time transport protocol (Real-time Transport Protocol, RTP) packet.

In the above-mentioned cell reconstruction process, the cell found by the terminal device must meet the S criterion to successfully camp, that is, the reference signal receiving power (Reference Signal Receiving Power, RSRP) of the terminal device in this cell needs to be greater than the network configuration of the terminal device to receive the cell signal The minimum threshold value (Qrxlevmin). However, the current configuration of Qrxlevmin is not a fixed value, and the receiving capability of the terminal equipment is basically fixed. This makes it difficult for the terminal equipment at the edge of some rapidly fading cells, even if the RSRP of the cell can meet the normal downlink reception or uplink random access requirements of the terminal equipment. There will also be a problem of VoLTE call drop due to the RSRP of the cell being lower than Qrxlevmin, which affects user experience.

Contents of the invention

The purpose of the embodiment of the present invention is to provide a method for resuming a VoLTE call, so as to solve the problem that the RSRP of the cell is lower than the configuration of the network device when the RSRP of the cell can meet the requirements of normal downlink reception or uplink random access of the terminal device. The minimum threshold value for the terminal equipment to receive the cell signal leads to the problem of call drop.

In order to solve the above-mentioned technical problems, the embodiment of the present invention is implemented as follows:

In the first aspect, a method for resuming a VoLTE call is provided, and the method includes:

If a radio link failure RLF occurs during a VoLTE call, the first target cell is obtained, and the RSRP of the first target cell is greater than or equal to the target threshold value and less than or equal to the minimum threshold value Qrxlevmin for the terminal device to receive the cell signal ;

Resetting the RSRP of the first target cell based on the Qrxlevmin, where the reset RSRP of the first target cell is greater than the Qrxlevmin.

In a second aspect, a terminal device is provided, and the terminal device includes:

An acquisition module, configured to acquire a first target cell if a radio link failure TLF occurs during a VoLTE call, the RSRP of the first target cell is greater than or equal to the target threshold and less than or equal to the signal received by the terminal device Minimum threshold Qrxlevmin;

The processing module resets the RSRP of the first target cell based on the Qrxlevmin, and the reset RSRP of the first target cell is greater than the Qrxlevmin.

In a third aspect, a terminal device is provided, the terminal device includes: a memory, a processor, and a computer program stored in the memory and operable on the processor, the computer program being executed by the processor The step of implementing the method for resuming a VoLTE call as described in the first aspect.

In a fourth aspect, a computer-readable medium is provided, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for resuming a VoLTE call as described in the first aspect are implemented.

In the embodiment of the present invention, when RLF occurs during a VoLTE call, the terminal device will reset the RSRP of the cell whose RSRP is greater than or equal to the target threshold value and less than or equal to the minimum threshold value Qrxlevmin for the terminal device to receive cell signals to A value higher than Qrxlevmin can avoid the problem of call drop caused by the RSRP of the cell being lower than the Qrxlevmin configured by the network device.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a schematic flowchart of a method for resuming a VoLTE call according to an embodiment of the present invention.

Fig. 2 is a schematic flowchart of a method for resuming a VoLTE call according to a specific embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The technical solution of the present invention can be applied to various communication systems, for example: Long Term Evolution (Long Term Evolution, LTE)/Enhanced Long Term Evolution (Long Term Evolution-advanced, LTE-A) system, New Air Interface (New Radio, NR) system Wait.

The terminal equipment (User Equipment, UE) in the embodiment of the present invention can also be referred to as a mobile terminal (MobileTerminal), mobile user equipment, etc., and can communicate with one or more The core network communicates, and the user equipment can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, such as a portable, pocket, hand-held, computer built-in or vehicle-mounted. Mobile devices that exchange speech and/or data with the radio access network.

The network device in the embodiment of the present invention is a device deployed in a wireless access network device to provide wireless communication functions for terminal devices. The network device may be, for example, a base station, and the base station may be an evolved base station (eNB or eNB) in LTE. -NodeB, evolutional Node B) and 5G base station (gNB), or the network end equipment of the subsequent evolution version, the present invention is not limited thereto.

The technical solutions provided by various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

FIG. 1 shows a method for resuming a call over VoLTE over Long Term Evolution according to an embodiment of the present application. As shown in Figure 1, the methods include:

S110, if a radio link failure RLF occurs during a VoLTE call, acquire a first target cell, the RSRP of the first target cell is greater than or equal to the target threshold and less than or equal to the minimum threshold for the terminal device to receive signals from the cell Value Qrxlevmin.

In S110, the minimum threshold Qrxlevmin for the terminal device to receive signals from the cell is configured by the network device through signaling. The RSRP of the first target cell is the RSRP measured by the terminal equipment, and may also be expressed as "the RSRP of the terminal equipment".

Optionally, in some embodiments, the target threshold is related to the capability of the terminal device, and the capability of the terminal device includes at least one of downlink receiving capability and uplink random access capability.

Or it can be understood that the target threshold value is a threshold determined by the terminal device according to the lower limit of RSRP corresponding to its own downlink receiving capability and/or the lower limit of RSRP corresponding to its own uplink random access capability.

Optionally, in some embodiments, acquiring the first target cell in S110 includes: performing a frequency scan and recording cells found during the frequency scan; and acquiring the first target cell from the searched cells.

As an example, acquiring the first target cell from the searched cells includes: acquiring the first target cell from the searched cells based on a descending order of RSRP.

That is to say, when obtaining the first target cell from the searched cells, it can be judged first whether the cell with the largest RSRP satisfies that the RSRP is greater than or equal to the target threshold and less than or equal to Qrxlevmin, and if so, then determine the maximum RSRP Otherwise, continue to judge whether the cell with the second largest RSRP satisfies that the RSRP is greater than or equal to the target threshold and less than or equal to Qrxlevmin, and if so, determine that the cell with the second largest RSRP is the first target cell, otherwise follow the above The method continues to judge whether other cells satisfy that the RSRP is greater than or equal to the target threshold and less than or equal to Qrxlevmin.

The above-mentioned frequency point scanning may include historical frequency point scanning and full-band frequency point scanning. That is to say, if RLF occurs during a VoLTE call, the terminal device can first perform historical frequency point scanning to restore the VoLTE call and record the cells searched during the historical frequency point scanning process and the RSRP of the cell. Perform a full-band frequency point scan to restore the VoLTE call and record the cells searched during the full-band frequency point scan and the RSRP of the cell. If unsuccessful, perform the method shown in Figure 1 to restore the VoLTE call.

As an example, the method for the terminal device to record the cell and the RSRP of the cell may be: record in a table, one column of the table is the identifier of the cell, and the other column of the table is the RSRP of the cell.

The foregoing historical frequency points may be frequency points recorded by the terminal device before the RLF occurs. Or it can be understood that the historical frequency point is the frequency point corresponding to the cell that the terminal device has camped on within a period of time (for example, a second, where a is a number greater than 0) before the RLF occurs. Full-band frequency point scanning can be understood as scanning all frequency points in all frequency bands supported by the terminal device.

Optionally, in some embodiments, the specific implementation of historical frequency point scanning may be to perform frequency point scanning on M historical frequency points recorded by the terminal device based on P, where P is the M historical frequency point scanning process. The maximum number of rounds that historical frequency points are scanned, P and M are positive integers.

Specifically, in some embodiments, performing frequency scanning on M historical frequency points based on P includes: performing a round of frequency band scanning on M historical frequency points; The M historical frequency points perform the next round of frequency point scanning until the VoLTE call is resumed successfully or the number of frequency point scanning rounds for the M historical frequency points is P.

Or it can be understood that, based on P, the specific implementation method of performing frequency point scanning for M historical frequency points recorded by the terminal device is: cyclically perform frequency point scanning on M historical frequency points until the VoLTE call is successfully restored or the number of cyclic executions is up to P.

The specific implementation method of performing a round of frequency point scanning for historical frequency points can be: according to the target method, perform a round of frequency point scanning for M historical frequency points; the target method includes one of the following methods: If there is a target historical frequency point whose received signal power meets the preset power threshold requirements, perform cell search on the target historical frequency point; perform received signal power detection on the M historical frequency points, if there is The received signal power meets the target historical frequency points required by the preset power threshold, cell search is performed on the target historical frequency points, and when a cell is searched, the VoLTE call recovery step is performed based on the searched cell; the M historical performing receiving power detection on the i-th historical frequency point among the frequency points, and if the received signal power of the i-th historical frequency point meets the preset power threshold requirement, performing a cell search on the i-th historical frequency point, i=1,...M; and, perform receiving power detection on the i-th historical frequency point among the M historical frequency points, if the received signal power of the i-th historical frequency point meets the preset power threshold requirements, then the i-th historical frequency point Perform cell search on historical frequency points, and execute the VoLTE call recovery step based on the searched cell when the cell is searched, i=1,...M.

For example, the terminal device records 4 historical frequency points, which are respectively historical frequency point 1, historical frequency point 2, historical frequency point 3 and historical frequency point 4, and performs a round of frequency point scanning on these 4 historical frequency points The specific method is: detect the received signal power of these 4 historical frequency points. If the received signal power detection result shows that the received signal power of historical frequency point 1 and historical frequency point 3 meets the preset power threshold requirements, then at historical frequency point 1 Perform cell search on historical frequency point 3. Or the specific scanning method for performing a round of frequency point scanning on these 4 historical frequency points is: firstly detect the received signal power of historical frequency point 1, if the received signal power of historical frequency point 1 meets the preset power threshold requirements, then Perform cell search on historical frequency point 1, and then perform received signal power detection on historical frequency point 2. If the received signal power of historical frequency point 2 does not meet the preset power threshold requirements, then perform received signal power detection on historical frequency point 3. If the received signal power of historical frequency point 3 meets the preset power threshold requirements, perform cell search on historical frequency point 3, and then perform received signal power detection on historical frequency point 4. If the received signal power of historical frequency point 4 does not meet the requirements According to the preset power threshold requirement, a round of frequency point scanning for these 4 historical frequency points is completed.

Or for another example, the terminal device records 4 historical frequency points, which are respectively historical frequency point 1, historical frequency point 2, historical frequency point 3 and historical frequency point 4, and performs a round of frequency point scanning on these 4 historical frequency points The specific method is: detect the received signal power of these 4 historical frequency points. If the received signal power detection result shows that the received signal power of historical frequency point 1 and historical frequency point 3 meets the preset power threshold requirements, then at historical frequency point 1 Perform cell search on historical frequency point 3, and perform VoLTE call recovery steps based on the searched cell when a cell is found. Or the specific scanning method for performing a round of frequency point scanning on these 4 historical frequency points is: firstly detect the received signal power of historical frequency point 1, if the received signal power of historical frequency point 1 meets the preset power threshold requirements, then Perform a cell search on historical frequency point 1. When a cell is found, perform the VoLTE call recovery step based on the searched cell. If the recovery of the VoLTE call fails, perform a received signal power detection on historical frequency point 2. If the received signal power of historical frequency point 2 If the signal power does not meet the preset power threshold requirements, the received signal power detection is performed on the historical frequency point 3. If the received signal power of the historical frequency point 3 meets the preset power threshold requirements, the cell search is performed on the historical frequency point 3, and When a cell is found, the VoLTE call recovery step is performed based on the searched cell. If the recovery of the VoLTE call fails, the received signal power of the historical frequency point 4 is detected. If the received signal power of the historical frequency point 4 does not meet the preset power threshold requirements , then a round of frequency point scanning for these 4 historical frequency points is completed.

Optionally, in some embodiments, the specific implementation of full-band frequency point scanning may be: detecting the received signal quality of the frequency points in each of the supported frequency bands, and detecting the frequency points whose received signal quality satisfies the condition Do a neighborhood search. Here, the received signal quality meets the condition that the received signal quality is higher than a certain preset threshold or the received signal quality ranks in the top N1, where N1 is a predetermined parameter.

For example, to detect the received signal quality of the frequency points in two frequency bands, the two frequency bands are frequency band 1 and frequency band 2, and there are two frequency points in frequency band 1, respectively, frequency point 1 and frequency point 2, and the frequency band There are 3 frequency points in 2, namely frequency point 3, frequency point 4 and frequency point 5. The result of the received signal quality detection is that the received signal quality of frequency point 1, frequency point 4 and frequency point 5 is higher than the preset threshold, then cell search is performed on frequency point 1, frequency point 4 and frequency point 5. Or the above five frequency points are ranked from high to low according to the received signal quality: frequency point 1, frequency point 3, frequency point 2, frequency point 4, and frequency point 5. If N1 is 3, then frequency point 1, frequency point 2 and frequency point 2 for cell search.

S120. Reset the RSRP of the first target cell based on the Qrxlevmin, where the reset RSRP of the first target cell is greater than the Qrxlevmin.

That is to say, if the RSRP of the first target cell is greater than or equal to the target threshold and less than or equal to Qrxlevmin, the RSRP of the first target cell can be reset to a value greater than Qrxlevmin, so that the RSRP of the first target cell satisfies the The S criterion for camping on enables the terminal equipment to camp on the first target cell and initiate random access in the first target cell. Thus, by resetting the RSRP of the cell to a value higher than Qrxlevmin, the problem of call drop caused by the RSRP of the cell being lower than Qrxlevmin can be avoided.

For example, if the RSRP of the first target cell is greater than the target threshold and less than Qrxlevmin, reset the RSRP of the first target cell to Qrxlevmin+1, so that the first target cell satisfies the S criterion.

Further, the method shown in FIG. 1 further includes: based on the reset RSRP of the first target cell, performing an operation of restoring the VoLTE call in the first target cell. Resuming the VoLTE call operation here includes: judging whether the first target cell satisfies the S criterion (RSRP-Q_rxlevmin>0) based on the reset RSRP of the first target cell, and if the first target cell satisfies the S criterion, the first target cell is considered The cell is a suitable cell, and the downlink synchronization is performed in the first target cell. After the downlink synchronization, an uplink random access is initiated in the first target cell. After the uplink access is successful, the VoLTE call can be resumed. That is, camp on the first target cell, and initiate an uplink random access procedure on the first target cell after camping on successfully. If the random access in the first target cell is successful, the VoLTE call resumes successfully.

Furthermore, if the reset of the RSRP of the first target cell fails to restore the VoLTE call in the first target cell and the call is not dropped, then obtain the second target cell, the RSRP of the second target cell is greater than or equal to the target threshold and Less than or equal to Qrxlevmin; reset the RSRP of the second target cell based on Qrxlevmin, and the reset RSRP of the second target cell is greater than Qrxlevmin.

That is to say, if a VoLTE call fails to resume in this cell based on the reset RSRP of a cell and the call is not dropped, continue to obtain the cell whose RSRP is greater than or equal to the target threshold and less than or equal to Qrxlevmin, and set the RSRP of this cell to Reset to a value greater than Qrxlevmin. Alternatively, it can be understood as cyclically performing the operation of obtaining a cell whose RSRP is greater than or equal to the target threshold and less than or equal to Qrxlevmin, and resetting the RSRP of the cell to a value greater than Qrxlevmin until the VoLTE call is successfully restored or dropped.

On the basis of all the above-mentioned embodiments, the method shown in FIG. 1 further includes: if the call fails or drops after the VoLTE call is resumed in the first target cell, restoring the RSRP of the reset cell to the value before the reset. In this way, it is possible to avoid the impact of resetting the RSRP of the cell on the subsequent communication process of the terminal device.

For example, if the RSRP of cell 1 is greater than the target threshold and less than Qrxlevmin, the terminal device resets the RSRP of cell 1, but the terminal device fails to restore the VoLTE call in cell 1. The terminal device continues to judge whether the RSRP of cell 2 is greater than or equal to the target threshold and less than Qrxlevmin, but the RSRP of cell 2 is smaller than the target threshold, then the terminal device continues to judge whether the RSRP of cell 3 is greater than or equal to the target threshold and less than Qrxlevmin Qrxlevmin, if the RSRP of cell 3 is greater than the target threshold and less than Qrxlevmin, the terminal device resets the RSRP of cell 3, and the VoLTE call is successfully resumed in cell 3, then the terminal device restores the RSRP of both cell 1 and cell 3 to reset previous value.

As an example, the method shown in FIG. 1 is applied to a scenario where the moving speed of the terminal device is lower than a preset speed threshold. That is, before acquiring the first target cell, the method shown in FIG. 1 further includes: determining that the moving speed is less than or equal to a preset speed threshold.

A method for resuming a VoLTE call according to a specific embodiment of the present invention will be described in detail below with reference to FIG. 2 . As shown in Figure 2, the method includes:

S202. Determine that the UE has RLF during the VoLTE call and is in a low-speed moving state.

The low-speed moving state here can be considered as a state where the moving speed is less than or equal to a preset speed threshold.

S204. Record the cells searched during the historical frequency point scanning process and the RSRP of the cells, and judge whether to restore the VoLTE call successfully based on the historical frequency point scanning.

S206. If the recovery of the VoLTE call fails based on the historical frequency point scanning, determine whether the first round of full frequency band scanning is completed.

S208. If the first round of full-band scanning is completed and the VoLTE call fails to be resumed based on the full-band scanning, determine whether the RSRP of the cell satisfies Qrxlevmin≥RSRP≥Actual_min.

Optionally, if the first round of full frequency band scanning has not been completed, perform S204 and subsequent steps.

It can be understood that the terminal device may not complete a round of full-band scanning due to the timeout of the T311 or T301 timer.

Actual_min in S208 may correspond to the target threshold in the method shown in FIG. 1 .

S210, if yes, reset the RSRP of the cell, and reset the RSRP of the cell to Qrxlevmin+1.

In S210, if otherwise, directly execute S212 and subsequent steps.

Here, the case of No includes the case that the RSRP of the cell is smaller than Actual_min, and the case that the RSRP of the cell is larger than Qrxlevmin. If the RSRP of the cell is greater than Qrxlevmin, the cell satisfies the S criterion, and the UE can camp on and initiate random access.

S212. Determine whether the UE accesses the cell and resumes the VoLTE call or has dropped the call.

S214, if yes, and there is a cell whose RSRP has been reset, restore the RSRP of the cell whose RSRP has been reset to a value before reset.

In S212, if the UE does not access the cell and the call is not dropped (the UE fails to resume VoLTE, but the RTP timer does not expire), go to S208 and subsequent steps.

As an example, determining whether the RSRP of a cell satisfies Qrxlevmin≥RSRP≥Actual_min is performed in the order of RSRP of the cells from high to low. That is, in S210, first judge the cell with the highest RSRP, and execute the steps of S212-S216. If it is necessary to go to S210 and its subsequent steps in S216, then judge the cell with the second highest RSRP, and execute S212-S216. Step of S216. Follow this method until the VoLTE call resumes successfully or all recorded cells have been judged.

Table 1 shows the results of field verification using the methods shown in Figures 1 and 2 (after improvement) and related methods in the prior art (before improvement). A/B in Table 1 indicates that the number of dropped calls during B VoLTE calls is A. It can be seen that through the method of the embodiment of the present invention, the call drop rate of VoLTE calls can be significantly reduced.

Table 1

before improvement Improved position 1 4/4 0/4 position 2 0/4 0/4 drop rate 4/8 0/8

The method for resuming a VoLTE call according to the embodiment of the present invention is described in detail above with reference to FIG. 1 and FIG. 2 . The terminal device according to the embodiment of the present invention will be described in detail below in conjunction with FIG. 3 .

Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in Figure 3, the terminal device 30 includes:

Acquisition module 31, used for obtaining the first target cell if a wireless link failure TLF occurs during the VoLTE call, the RSRP of the first target cell is greater than or equal to the target threshold value and less than or equal to the signal received by the terminal device The minimum threshold value Qrxlevmin;

The processing module 32 is configured to reset the RSRP of the first target cell based on the Qrxlevmin, where the reset RSRP of the first target cell is greater than the Qrxlevmin.

Optionally, as an embodiment, the processing module 32 is also used for:

Based on the reset RSRP of the first target cell, an operation of restoring the VoLTE call is performed in the first target cell.

Optionally, as an embodiment, the acquiring module 31 is also used for:

If the processing module fails to restore the VoLTE call in the first target cell based on the reset RSRP of the first target cell and the call is not dropped, obtain a second target cell, and the RSRP of the second target cell is greater than or equal to the target threshold and less than or equal to the Qrxlevmin.

Optionally, as an embodiment, the processing module 32 is also used for:

If the VoLTE call is successfully restored or dropped in the first target cell, the RSRP of the reset cell is restored to the value before the reset.

Optionally, as an embodiment, the acquiring module 31 is specifically configured to:

Carry out frequency point scanning and record the cells searched during the frequency point scanning process;

Acquiring the first target cell from the searched cells.

Optionally, as an embodiment, the acquiring module 31 is specifically configured to:

The first target cell is acquired from the searched cells based on the descending order of RSRP.

Optionally, as an embodiment, the target threshold is related to a capability of the terminal device, and the capability of the terminal device includes at least one of a downlink reception capability and an uplink random access capability.

The terminal device provided by the embodiment of the present invention can implement various processes implemented by the terminal device in the method embodiments in FIG. 1 to FIG. 2 , and details are not repeated here to avoid repetition.

Fig. 4 is a schematic diagram of the hardware structure of a terminal device implementing various embodiments of the present invention, the terminal device 400 includes but not limited to: a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, and a display unit 406 , a user input unit 407 , an interface unit 408 , a memory 409 , a processor 410 , and a power supply 411 and other components. Those skilled in the art can understand that the structure of the terminal equipment shown in Figure 4 does not constitute a limitation on the terminal equipment, and the terminal equipment may include more or less components than those shown in the figure, or combine certain components, or different components layout. In the embodiment of the present invention, the terminal devices include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.

Wherein, the processor 410, if a radio link failure RLF occurs during the VoLTE call, acquires the first target cell, the RSRP of the first target cell is greater than or equal to the target threshold and less than or equal to the signal received by the terminal device The minimum threshold value Qrxlevmin; reset the RSRP of the first target cell based on the Qrxlevmin, and the reset RSRP of the first target cell is greater than the Qrxlevmin.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 401 can be used for receiving and sending signals during sending and receiving information or during a call. Specifically, the downlink data from the base station is received and processed by the processor 410; Uplink data is sent to the base station. Generally, the radio frequency unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 401 can also communicate with the network and other devices through a wireless communication system.

The terminal device provides users with wireless broadband Internet access through the network module 402, such as helping users send and receive emails, browse web pages, and access streaming media.

The audio output unit 403 may convert audio data received by the radio frequency unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output as sound. Moreover, the audio output unit 403 may also provide audio output related to a specific function performed by the terminal device 400 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 403 includes a speaker, a buzzer, a receiver, and the like.

The input unit 404 is used for receiving audio or video signals. The input unit 404 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 4042, and the graphics processing unit 4041 is used for still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The data is processed. The processed image frames may be displayed on the display unit 106 . The image frames processed by the graphics processor 4041 may be stored in the memory 409 (or other storage media) or sent via the radio frequency unit 401 or the network module 402 . The microphone 4042 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 401 for output in the case of a phone call mode.

The terminal device 400 also includes at least one sensor 405, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 4061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 4061 and the / or backlighting. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the posture of terminal equipment (such as horizontal and vertical screen switching, related games) , magnetometer posture calibration), vibration recognition-related functions (such as pedometer, knocking), etc.; the sensor 405 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be repeated here.

The display unit 406 is used to display information input by the user or information provided to the user. The display unit 406 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like.

The user input unit 407 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the terminal device. Specifically, the user input unit 407 includes a touch panel 4071 and other input devices 4072 . The touch panel 4071, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 4071 or near the touch panel 4071). operate). The touch panel 4071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to For the processor 410, receive the command sent by the processor 410 and execute it. In addition, the touch panel 4071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 4071 , the user input unit 407 may also include other input devices 4072 . Specifically, other input devices 4072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Furthermore, the touch panel 4071 can be covered on the display panel 4061, and when the touch panel 4071 detects a touch operation on or near it, it will be sent to the processor 410 to determine the type of the touch event, and then the processor 410 will The type of event provides a corresponding visual output on the display panel 4061 . Although in FIG. 4, the touch panel 4071 and the display panel 4061 are used as two independent components to realize the input and output functions of the terminal device, in some embodiments, the touch panel 4071 and the display panel 4061 can be integrated. The implementation of the input and output functions of the terminal device is not specifically limited here.

The interface unit 408 is an interface for connecting an external device to the terminal device 400 . For example, an external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 408 can be used to receive input from an external device (for example, data information, power, etc.) transfer data between devices.

The memory 409 can be used to store software programs as well as various data. The memory 409 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of mobile phones (such as audio data, phonebook, etc.), etc. In addition, the memory 409 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The processor 410 is the control center of the terminal equipment, and uses various interfaces and lines to connect various parts of the entire terminal equipment, by running or executing software programs and/or modules stored in the memory 409, and calling data stored in the memory 409 , execute various functions of the terminal equipment and process data, so as to monitor the terminal equipment as a whole. The processor 410 may include one or more processing units; preferably, the processor 410 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 410 .

The terminal device 400 can also include a power supply 411 (such as a battery) for supplying power to various components. Preferably, the power supply 411 can be logically connected to the processor 410 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. and other functions.

In addition, the terminal device 400 includes some functional modules not shown, which will not be repeated here.

Preferably, the embodiment of the present invention also provides a mobile terminal, including a processor 410, a memory 409, a computer program stored in the memory 409 and operable on the processor 410, when the computer program is executed by the processor 410 The various processes of the above embodiments of the method for preventing false triggering of the fingerprint sensor can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

The embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above-mentioned method embodiment for resuming a VoLTE call is implemented, and can To achieve the same technical effect, in order to avoid repetition, no more details are given here. Wherein, the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in various embodiments of the present invention.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, without departing from the gist of the present invention and the protection scope of the claims, many forms can also be made, all of which belong to the protection of the present invention.

Claims (12)

1. A method for long-term evolution voice bearer VoLTE call recovery, applied to terminal equipment, is characterized in that, comprising: If a radio link failure RLF occurs during a VoLTE call, the first target cell is obtained, and the RSRP of the first target cell is greater than or equal to the target threshold value and less than or equal to the minimum threshold value Qrxlevmin for the terminal device to receive the cell signal ; The target threshold value is related to the capability of the terminal device; Resetting the RSRP of the first target cell based on the Qrxlevmin, where the reset RSRP of the first target cell is greater than the Qrxlevmin; Based on the reset RSRP of the first target cell, perform a VoLTE call recovery operation in the first target cell; If the reset of the RSRP of the first target cell fails to restore the VoLTE call in the first target cell and the call is not dropped, obtain a second target cell, and the RSRP of the second target cell is greater than or equal to the target Threshold value and less than or equal to the Qrxlevmin; Resetting the RSRP of the second target cell based on the Qrxlevmin, where the reset RSRP of the second target cell is greater than the Qrxlevmin. 2. The method according to claim 1, wherein the method further comprises: If the VoLTE call is successfully restored or dropped in the first target cell, the RSRP of the reset cell is restored to the value before the reset. 3. The method according to any one of claims 1 to 2, wherein said obtaining the first target cell comprises: Carry out frequency point scanning and record the cells searched during the frequency point scanning process; Acquiring the first target cell from the searched cells. 4. The method according to claim 3, wherein the obtaining the first target cell from the searched cells comprises: The first target cell is acquired from the searched cells based on the descending order of RSRP. 5. The method according to any one of claims 1 to 2, wherein the capability of the terminal device includes at least one of a downlink receiving capability and an uplink random access capability. 6. A terminal device, characterized in that, comprising: An acquisition module, configured to acquire a first target cell if a radio link failure TLF occurs during a VoLTE call, the RSRP of the first target cell is greater than or equal to the target threshold and less than or equal to the signal received by the terminal device The minimum threshold value Qrxlevmin; the target threshold value is related to the capability of the terminal device; The processing module resets the RSRP of the first target cell based on the Qrxlevmin, and the reset RSRP of the first target cell is greater than the Qrxlevmin; The processing module is further configured to: perform a VoLTE call recovery operation in the first target cell based on the reset RSRP of the first target cell; The obtaining module is further configured to: if the processing module fails to restore the VoLTE call in the first target cell based on the reset RSRP of the first target cell and the call is not dropped, then obtain the second target cell, the The RSRP of the second target cell is greater than or equal to the target threshold and less than or equal to the Qrxlevmin; The processing module is further configured to: reset the RSRP of the second target cell based on the Qrxlevmin, where the reset RSRP of the second target cell is greater than the Qrxlevmin. 7. The terminal device according to claim 6, wherein the processing module is further used for: If the VoLTE call is successfully restored or dropped in the first target cell, the RSRP of the reset cell is restored to the value before the reset. 8. The terminal device according to any one of claims 6 to 7, wherein the acquiring module is specifically used for: Carry out frequency point scanning and record the cells searched during the frequency point scanning process; Acquiring the first target cell from the searched cells. 9. The terminal device according to claim 8, wherein the acquiring module is specifically used for: The first target cell is acquired from the searched cells based on the descending order of RSRP. 10. The terminal device according to any one of claims 6 to 7, wherein the capability of the terminal device includes at least one of a downlink receiving capability and an uplink random access capability. 11. A terminal device, characterized in that it comprises: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, the following The step of the method for VoLTE conversation recovery described in any one in claim 1 to 5. 12. A computer-readable medium, storing a computer program on the computer-readable medium, when the computer program is executed by a processor, it realizes the steps of the method for VoLTE call recovery according to any one of claims 1 to 5 .

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