CN110149167B - Method and device for dynamically adjusting codes, mobile terminal and storage medium - Google Patents
Method and device for dynamically adjusting codes, mobile terminal and storage medium Download PDFInfo
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- CN110149167B CN110149167B CN201910368560.5A CN201910368560A CN110149167B CN 110149167 B CN110149167 B CN 110149167B CN 201910368560 A CN201910368560 A CN 201910368560A CN 110149167 B CN110149167 B CN 110149167B
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- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
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Abstract
The embodiment of the application discloses a method, a device, a mobile terminal and a storage medium for dynamically adjusting codes, wherein the method comprises the following steps: when a first mobile terminal carries out voice call, the first mobile terminal detects the signal quality of a BLE network; if the signal quality parameter of the BLE network is detected to be greater than or equal to a preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a first physical layer encoding mode; if the signal quality parameter of the BLE network is smaller than the preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a second physical layer encoding mode; the bit rate corresponding to the first physical layer coding mode is larger than the bit rate corresponding to the second physical layer coding mode. According to the embodiment of the application, the physical layer coding mode can be dynamically adjusted during voice call, so that the voice call quality of the BLE network is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for dynamically adjusting a code, a mobile terminal, and a storage medium.
Background
Bluetooth Low Energy (BLE), also called Bluetooth Low Energy, is a personal area network technology designed and sold by the Bluetooth special interest group. BLE has the advantages of low power consumption and low cost, and can be compatible with mobile terminals such as mobile phones and tablet computers.
At present, BLE can be used in the aspect of the voice call, when using BLE to carry out voice telephone communication, if the distance of two parties of conversation is far away, BLE network is relatively poor, can frequently appear the condition that voice data package is retransmitted, and voice data package transmission is delayed, and two parties of conversation can frequently feel the condition that the pronunciation card is pause, and voice call quality is relatively poor.
Disclosure of Invention
The embodiment of the application provides a method, a device, a mobile terminal and a storage medium for dynamically adjusting codes, which can improve the voice call quality of a BLE network when the BLE network is poor.
In a first aspect, an embodiment of the present application provides a method for dynamically adjusting coding, where the method is applied to a long-distance bluetooth low energy BLE network, and a first mobile terminal and a second mobile terminal are connected through the BLE network, where the method includes:
when the first mobile terminal carries out voice call, the first mobile terminal detects the signal quality of the BLE network;
if the signal quality parameter of the BLE network is detected to be greater than or equal to a preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a first physical layer encoding mode;
if the signal quality parameter of the BLE network is smaller than the preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a second physical layer encoding mode; the bit rate corresponding to the first physical layer coding mode is greater than the bit rate corresponding to the second physical layer coding mode.
In a second aspect, an embodiment of the present application provides a device for dynamically adjusting coding, where the device for dynamically adjusting coding is applied to a long-distance bluetooth low energy BLE network, and a first mobile terminal and a second mobile terminal are connected through the BLE network, and the device for dynamically adjusting coding includes:
the detecting unit is used for detecting the signal quality of the BLE network when the first mobile terminal carries out voice call;
the encoding unit is used for encoding the voice signal transmitted to the second mobile terminal by adopting a first physical layer encoding mode under the condition that the detection unit detects that the signal quality parameter of the BLE network is greater than or equal to a preset signal quality threshold;
the encoding unit is further configured to encode the voice signal transmitted to the second mobile terminal in a second physical layer encoding manner when the detection unit detects that the signal quality parameter of the BLE network is smaller than the preset signal quality threshold; the bit rate corresponding to the first physical layer coding mode is greater than the bit rate corresponding to the second physical layer coding mode.
In a third aspect, an embodiment of the present application provides a mobile terminal, including a processor, and a memory, where the memory is configured to store one or more programs, where the one or more programs are configured to be executed by the processor, and where the program includes instructions for performing the steps in the first aspect of the embodiment of the present application.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the first aspect of the embodiment of the present application.
In a fifth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package.
It can be seen that, in the method for dynamically adjusting codes described in this embodiment of the present application, the method for dynamically adjusting codes is applied to a long-distance bluetooth low energy BLE network, a first mobile terminal and a second mobile terminal are connected through a BLE network, and when the first mobile terminal and the second mobile terminal perform a voice call, the first mobile terminal detects signal quality of the BLE network; if the signal quality parameter of the BLE network is detected to be greater than or equal to a preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a first physical layer encoding mode; if the signal quality parameter of the BLE network is smaller than the preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a second physical layer encoding mode; the bit rate corresponding to the first physical layer coding mode is greater than the bit rate corresponding to the second physical layer coding mode. The embodiment of the application can dynamically adjust the physical layer coding mode according to the signal quality of the BLE network, the coding mode with high bit rate is adopted to carry out physical layer coding when the signal quality is good, the coding mode with low bit rate is adopted to carry out physical layer coding when the signal quality is poor, the Bluetooth voice call requirements of different scenes can be met, and therefore the voice call quality of the BLE network is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Figure 1 is a schematic network architecture diagram of a BLE network disclosed in an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for dynamically adjusting codes according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating another method for dynamically adjusting encoding disclosed in embodiments of the present application;
FIG. 4 is a flow chart illustrating another method for dynamically adjusting encoding disclosed in embodiments of the present application;
FIG. 5 is a schematic structural diagram of an apparatus for dynamically adjusting codes according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a mobile terminal disclosed in an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The Mobile terminal according to the embodiment of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a mobile terminal.
The following describes embodiments of the present application in detail.
Referring to fig. 1, fig. 1 is a schematic diagram of a network architecture of a BLE network according to an embodiment of the present disclosure, where the BLE network includes BLE nodes such as a first mobile terminal, a second mobile terminal, and a third mobile terminal. The BLE node in the BLE network modulates the physical layer (PHY), so the BLE node can also be used for different protocols and different network architectures (such as Mesh, Star, point-to-point, etc.). The BLE nodes can directly establish a Bluetooth communication channel so as to perform BLE communication.
Long range (Lora), also called long distance, is a low power consumption local area network wireless standard (IEEE 802.15.4 g). Bluetooth Low Energy (BLE), also called Bluetooth Low Energy, is a personal area network technology designed and sold by the Bluetooth special interest group. Communications may be conducted between BLE nodes. The communication distance of the BLE node is generally several kilometers to tens of kilometers, and the communication distance of the BLE node is longer compared with the communication distance of the classic Bluetooth communication and the WiFi communication.
The BLE node may include a BLE module (e.g., a BLE chip) that supports a data transmission rate of 250kbps, 500kbps, 1Mbps, and 2 Mbps. The BLE chip can support not only a spread spectrum modulation mode, but also other modulation modes of a plurality of standards, such as Frequency-shift Keying (FSK)/Gaussian Frequency-shift Keying (GFSK), can be switched with each other, and not only can realize the remote modulation capability, but also can use the standard FSK or binary On-Off Keying (OOK) modulation technology. The BLE node may be any mobile terminal including a BLE module, such as a cell phone, a wearable device (e.g., a smart bracelet, a smart watch, a smart headset, etc.), a tablet, etc.
In this embodiment of the application, when using BLE network to carry out voice call, can be according to the signal quality dynamic adjustment physical layer coding mode of long distance BLE network to promote the voice call quality of BLE network.
Based on the network architecture shown in fig. 1, the embodiment of the present application discloses a method for dynamically adjusting codes. Referring to fig. 2, fig. 2 is a flowchart illustrating a method for dynamically adjusting a code according to an embodiment of the present application, and as shown in fig. 2, the method for dynamically adjusting a code includes the following steps.
201, when a first mobile terminal performs a voice call, the first mobile terminal detects the signal quality of the BLE network.
In this embodiment of the application, when a first mobile terminal needs to perform bluetooth voice communication with a second mobile terminal, the first mobile terminal and the second mobile terminal both start a bluetooth low energy function, and the first mobile terminal can establish a communication channel with the second mobile terminal through a BLE network to realize remote voice telephone communication.
When a first mobile terminal needs to perform Bluetooth voice communication with a second mobile terminal, a microphone of the first mobile terminal can collect voice signals input by a user, a voice encoder of the first mobile terminal can sample the input voice signals according to a certain sampling frequency, the sampled signals are encoded, the encoded signals are compressed, and the compressed signals are packaged to obtain a voice data packet. The first mobile terminal transmits the voice data packet to the second mobile terminal.
The first mobile terminal and the second mobile terminal both belong to a BLE node in a BLE network. The first mobile terminal and the second mobile terminal may be connected through a BLE network. The signal quality of the BLE network determines the voice call quality of the first mobile terminal and the second mobile terminal. If the signal quality of the BLE network is good, the voice call quality of the first mobile terminal and the second mobile terminal is good; and if the signal quality of the BLE network is poor, the voice call quality of the first mobile terminal and the second mobile terminal is poor.
Optionally, in step 201, the first mobile terminal detects signal quality of the BLE network, specifically:
the first mobile terminal detects the bluetooth received signal strength indication, RSSI, or,
the first mobile terminal detects a distance between the first mobile terminal and the second mobile terminal.
In this embodiment of the application, the BLE network quality may be determined by a bluetooth Received Signal Strength Indication (RSSI) of the first mobile terminal. For example, if the bluetooth RSSI of the first mobile terminal is lower than-130 dBm, the BLE network is considered to be poor.
BLE network quality may also be determined by the distance of the first mobile terminal from the second mobile terminal. Generally, the closer the distance between the two is, the better the quality of the BLE network is; the farther apart the two are, the worse the BLE network quality.
Optionally, the first mobile terminal detects that the signal quality parameter of the BLE network is greater than or equal to a preset signal quality threshold, specifically:
the first mobile terminal detects that the Bluetooth RSSI of the first mobile terminal is greater than or equal to a preset signal strength threshold value; or the like, or, alternatively,
the first mobile terminal detects that the distance between the first mobile terminal and the second mobile terminal is smaller than or equal to a preset distance threshold.
The preset signal strength threshold may be preset and stored in a memory (non-volatile memory) of the mobile terminal. For example, the preset signal strength threshold may be set to-130 dBm. The signal quality parameter of the BLE network may include any one of a bluetooth RSSI of the first mobile terminal, a distance between the first mobile terminal and the second mobile terminal.
The preset distance threshold may be set in advance and stored in a memory (non-volatile memory) of the mobile terminal. For example, the preset distance threshold may be set to 2.5 kilometers, 5 kilometers, and the like. The setting of the preset distance threshold may be determined according to the transceiving power of the transceiver of the first mobile terminal and the second mobile terminal, generally speaking, the higher the transceiving power is, the higher the preset distance threshold may be set, and the smaller the transceiving power is, the smaller the preset distance threshold may be set.
Optionally, the first mobile terminal detects that the signal quality parameter of the BLE network is less than a preset signal quality threshold, specifically:
the first mobile terminal detects that the Bluetooth RSSI of the first mobile terminal is smaller than a preset signal strength threshold value; or the like, or, alternatively,
the first mobile terminal detects that the distance between the first mobile terminal and the second mobile terminal is smaller than a preset distance threshold.
202, if it is detected that the signal quality parameter of the BLE network is greater than or equal to the preset signal quality threshold, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by using a first physical layer encoding method.
203, if the signal quality parameter of the BLE network is detected to be smaller than the preset signal quality threshold, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by adopting a second physical layer encoding mode; the bit rate corresponding to the first physical layer coding mode is larger than the bit rate corresponding to the second physical layer coding mode.
In this embodiment, the preset signal quality threshold may be preset and stored in a memory (e.g., a non-volatile memory) of the first mobile terminal. Physical layer coding is a method of coding in a physical layer. The method encodes the message, so that the message received by the receiving end has the capability of forward correction, and under the condition of the same error rate, the error code retransmission times can be obviously reduced, thereby improving the communication rate. If 8-symbol coding (S8 coding) is adopted, namely 8 symbols are used for representing 1 bit, and the bit rate is 125 kb/S; if 2-symbol encoding (S2 encoding) is used, i.e., 1 bit is represented by 2 symbols, the bit rate is 500 kb/S. Obviously, the more symbols represent 1 bit, the more information can be transmitted per unit time, but the more information is lost. The "symbol" refers to information obtained by a single sampling, and the information may include a plurality of bits, or a plurality of pieces of information may be equivalent to one bit. For example, the first coding scheme may be 2-symbol coding, and the second coding scheme may be 8-symbol coding. The bit rate for 2-symbol encoding is greater than the bit rate for 8-symbol encoding, and the communication distance for 8-symbol encoding is greater than the communication distance for 2-symbol encoding. If the physical layer coding is not adopted, the corresponding communication distance is smaller than that of the 2-symbol coding and that of the 8-symbol coding. For example, 8-symbol encoding corresponds to a communication distance that is 4 times the communication distance corresponding to no physical layer encoding, and 2-symbol encoding corresponds to a communication distance that is 2 times the communication distance corresponding to no physical layer encoding.
It should be noted that the physical layer may or may not be encoded, and the physical layer is ordinary BLE if it is not encoded. This application adopts the mode of physical layer code, compares with not carrying out the physical layer code, and the physical layer code can be applicable to the bluetooth low energy communication distance of longer distance, has expanded communication rate and communication distance, can be applied to remote communication such as open air, field. The physical layer encoding, which specifies basic radio frequency parameters of BLE communication including signal frequency, modulation scheme, etc., is different from encoding (e.g., wav encoding, mp3 encoding) of an upper layer (e.g., application layer) which greatly reduces the amount of audio data through audio compression techniques.
If the signal quality parameter of the BLE network is greater than or equal to the preset signal quality threshold value, the signal quality of the BLE network is better, and in order to ensure the voice call quality, a first coding mode is adopted to code the voice signal transmitted to the second mobile terminal; if the signal quality parameter of the BLE network is smaller than the preset signal quality threshold value, it is indicated that the signal quality of the BLE network is poor, if the first coding mode is still adopted to code the voice signal transmitted to the second mobile terminal, although the voice received by the second mobile terminal is clear, the situation of packet loss of the voice data packet is easy to occur, the phenomenon of voice delay occurs in the second mobile terminal, and the voice call quality is obviously affected. And under the condition that the signal quality parameter of the BLE network is smaller than the preset signal quality threshold, the voice signal transmitted to the second mobile terminal is coded by adopting a second coding mode, although the voice received by the second mobile terminal is slightly fuzzy, the situation of voice data packet loss is unlikely to occur, and therefore the voice call quality can be improved.
Optionally, the communication distance corresponding to the first physical layer coding mode is smaller than the communication distance corresponding to the second physical layer coding mode.
Optionally, in step 202, after the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by using the first physical layer encoding method, the method may further include the following steps:
a first mobile terminal sends a first voice data packet to a second mobile terminal;
and under the condition that the confirmation message of the second mobile terminal for the first voice data packet is not received, the first mobile terminal continues to send the second voice data packet to the second mobile terminal.
In this embodiment of the application, when it is detected that the signal quality parameter of the BLE network is greater than or equal to the preset signal quality threshold, that is, the signal quality of the BLE network is better, after the first mobile terminal sends the voice data packet to the second mobile terminal, it is not necessary to wait for an acknowledgement message (Ack) returned by the second mobile terminal to continue sending the next voice data packet to the second mobile terminal. Wherein the confirmation message may be a confirmation character. The embodiment of the application can improve the real-time performance of voice data transmission, and further improve the transmission efficiency of the data packet when the signal quality of the BLE network is better, so that the real-time performance of voice communication is improved.
Optionally, in step 202, after the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by using the first physical layer encoding method, the method may further include the following steps:
the first mobile terminal sends a voice data packet to the second mobile terminal by adopting a first data packet sending frequency;
in step 203, after the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by using the second physical layer encoding method, the method may further include the following steps:
the first mobile terminal sends a voice data packet to the second mobile terminal by adopting a second data packet sending frequency; and the first data packet transmission frequency is greater than the second data packet transmission frequency.
In the embodiment of the application, when the signal quality of the BLE network is good, a high data packet transmission frequency is adopted; when the signal quality of the BLE network is poor, a lower data packet transmission frequency is adopted. Different data packet transmission frequencies are adopted when the signal quality of the BLE network is good and the signal quality is poor respectively, the data transmission requirements of different scenes are met, more data volume can be transmitted when the signal quality is good, and the data transmission efficiency is improved.
Optionally, after the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by using the second physical layer encoding method, the method may further include the following steps:
and if the retransmission times of the data packet of the voice data packet transmitted to the second mobile terminal by the first mobile terminal reach the preset times, discarding the voice data packet and transmitting the next voice data packet.
According to the embodiment of the application, when the signal quality of the BLE network is poor, the retransmission times of the data packet (the preset times are 1 or more than 1) are limited or not (the preset times are 0), if the data packet is not received by the other party and the retransmission times reach the preset times, the data packet is not retransmitted, and new data is sent. The embodiment of the application can improve the real-time performance of voice call. In this application embodiment, can be according to the signal quality dynamic adjustment physical layer coding mode of BLE network, can satisfy the bluetooth voice call demand of different scenes to promote the voice call quality of BLE network.
Referring to fig. 3, fig. 3 is a schematic flowchart of another method for dynamically adjusting codes according to an embodiment of the present disclosure, and fig. 3 is obtained by further optimizing on the basis of fig. 2. As shown in fig. 3, the method for dynamically adjusting the encoding includes the following steps.
301, when the first mobile terminal performs a voice call, the first mobile terminal detects the signal quality of the BLE network.
The specific implementation of step 301 in the embodiment of the present application may refer to step 201 shown in fig. 2, which is not described herein again.
302, if it is detected that the signal quality parameter of the BLE network changes from being greater than or equal to the preset signal quality threshold to being less than the preset signal quality threshold, and the duration that the signal quality of the BLE network is less than the preset signal quality threshold reaches the first preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the first physical layer coding mode to the second physical layer coding mode.
303, if it is detected that the signal quality parameter of the BLE network changes from being less than the predetermined signal quality threshold to being greater than or equal to the predetermined signal quality threshold, and the duration that the signal quality of the BLE network is greater than or equal to the predetermined signal quality threshold reaches the first predetermined duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the second physical layer coding mode to the first physical layer coding mode.
In this embodiment of the application, when it is detected that the signal quality of the BLE network changes from being greater than or equal to the preset signal quality threshold to being less than the preset signal quality threshold, the first mobile terminal does not immediately perform the switching of the physical layer coding mode, but performs the switching of the physical layer coding mode only when the duration that the signal quality parameter of the BLE network is less than the preset signal quality threshold reaches the first preset duration threshold, so as to prevent ping-pong switching from occurring, that is, when the signal quality of the BLE network fluctuates around the critical value (at the preset signal quality threshold), the switching of the physical layer coding mode is not frequently performed, and the voice call quality can be improved. Because the switching of the physical layer coding mode needs time, when the physical layer coding mode is switched, the phenomenon of voice pause can occur, and the voice communication quality can be reduced by frequent switching.
Similarly, when it is detected that the signal quality parameter of the BLE network changes from being less than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold, the first mobile terminal does not immediately perform the switching of the physical layer coding scheme, but performs the switching of the physical layer coding scheme only when the duration of the signal quality parameter of the BLE network being greater than or equal to the preset signal quality threshold reaches the first preset duration threshold, so as to prevent ping-pong handover from occurring, that is, when the signal quality parameter of the BLE network fluctuates around the critical value (within the preset signal quality threshold), the switching of the physical layer coding scheme is not frequently performed, and the voice call quality can be improved.
The first preset time length threshold may be preset and stored in a memory (non-volatile memory) of the mobile terminal. For example, the first preset duration threshold may be set to 10 seconds, 30 seconds, or the like. The first preset duration threshold may be dynamically changed according to a moving speed of the first mobile terminal, and if the moving speed of the first mobile terminal is fast (for example, the moving speed of the first mobile terminal is greater than or equal to the preset speed threshold), the first preset duration threshold may be set to 10 seconds, and if the moving speed of the first mobile terminal is slow (for example, the moving speed of the first mobile terminal is less than the preset speed threshold), the first preset duration threshold may be set to 30 seconds.
In this application embodiment, can adjust physical layer coding mode according to the signal quality change of BLE network and the stable condition after the signal quality change of BLE network, can prevent that frequent switching from appearing and reduce the condition of voice conversation quality, satisfy the bluetooth voice conversation demand of different scenes to promote the voice conversation quality of BLE network.
Referring to fig. 4, fig. 4 is a flowchart illustrating another method for dynamically adjusting codes according to an embodiment of the present application, and fig. 4 is obtained by further optimizing on the basis of fig. 2. As shown in fig. 4, the method for dynamically adjusting the encoding includes the following steps.
401, when the first mobile terminal performs a voice call, the first mobile terminal detects the signal quality of the BLE network.
The specific implementation of step 401 in this embodiment may refer to step 201 shown in fig. 2, which is not described herein again.
402, if it is detected that the signal quality parameter of the BLE network changes from being greater than or equal to the preset signal quality threshold to being less than the preset signal quality threshold, and the duration of the continuous decrease of the signal quality parameter of the BLE network is greater than the second preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the first physical layer coding mode to the second physical layer coding mode.
403, if it is detected that the signal quality parameter of the BLE network changes from being less than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold, and the duration of the continuous rise of the signal quality parameter of the BLE network is greater than the second preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the second physical layer coding mode to the first physical layer coding mode.
In this embodiment of the application, when it is detected that the signal quality parameter of the BLE network changes from being greater than or equal to the preset signal quality threshold to being smaller than the preset signal quality threshold, the first mobile terminal does not perform the switching of the physical layer coding mode only according to the index, but performs the switching of the physical layer coding mode only when the duration that the signal quality parameter of the BLE network continuously decreases is greater than the second preset duration threshold, and may perform the switching of the physical layer coding mode only when it is determined that the signal quality of the BLE network is in a decreasing trend. The method can prevent the situation that the switching is not timely, namely when the signal quality parameter of the BLE network is continuously reduced when the signal quality parameter is near a critical value (in a preset signal quality threshold), the switching of the physical layer coding mode can be directly carried out, and the voice call quality can be improved.
Similarly, when detecting that the signal quality parameter of the BLE network changes from being less than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold, the first mobile terminal does not perform the switching of the physical layer coding scheme only according to the index, but performs the switching of the physical layer coding scheme only when the duration that the signal quality parameter of the BLE network continuously rises is greater than the second preset duration threshold, and may perform the switching of the physical layer coding scheme only when it is determined that the signal quality of the BLE network is in a rising trend. The method can prevent the situation that the switching is not timely, namely when the signal quality parameter of the BLE network continuously rises near a critical value (in a preset signal quality threshold), the switching of the physical layer coding mode can be directly carried out, and the voice call quality can be improved.
The second preset time length threshold may be preset and stored in a memory (non-volatile memory) of the mobile terminal. For example, the second preset duration threshold may be set to 10 seconds, 20 seconds, or the like. The second preset duration threshold may be set according to a rate of decrease or a rate of increase of the signal quality parameter of the BLE network, for example, if the rate of decrease or the rate of increase of the signal quality parameter of the BLE network is greater than a preset rate of decrease threshold or rate of increase threshold, the second preset duration threshold may be set to 10 seconds, and if the rate of decrease or the rate of increase of the signal quality parameter of the BLE network is less than the preset rate of decrease threshold or rate of increase threshold, the second preset duration threshold may be set to 20 seconds.
In the embodiment of the application, the physical layer coding mode can be switched according to the change of the signal quality of the BLE network and whether the signal quality of the BLE network is in an ascending trend or a descending trend when the signal quality of the BLE network changes near the critical value, the physical layer coding mode can be switched in time, the Bluetooth voice call requirements of different scenes are met, and therefore the voice call quality of the BLE network is improved.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the mobile terminal includes hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiment of the present application, the mobile terminal may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an apparatus for dynamically adjusting codes according to an embodiment of the present disclosure. As shown in fig. 5, the apparatus for dynamically adjusting coding is applied to a long-distance bluetooth low energy BLE network, a first mobile terminal and a second mobile terminal are connected through the BLE network, and the apparatus 500 for dynamically adjusting coding includes a detecting unit 501 and a coding unit 502, where:
a detecting unit 501, configured to detect signal quality of the BLE network when the first mobile terminal and the second mobile terminal perform a voice call;
an encoding unit 502, configured to encode, in a case that the signal quality of the BLE network detected by the detecting unit 501 is greater than or equal to a preset signal quality threshold, a voice signal transmitted to the second mobile terminal by using a first physical layer encoding manner;
the encoding unit 502 is further configured to encode the voice signal transmitted to the second mobile terminal in a second physical layer encoding manner when the detection unit 501 detects that the signal quality of the BLE network is less than the preset signal quality threshold; the bit rate corresponding to the first physical layer coding mode is greater than the bit rate corresponding to the second physical layer coding mode.
Optionally, the apparatus 500 for dynamically adjusting encoding may further include a switching unit 503.
A switching unit 503, configured to switch, when the detecting unit 501 detects that the signal quality of the BLE network changes from being greater than or equal to the preset signal quality threshold to being less than the preset signal quality threshold, and the duration of the signal quality of the BLE network being less than the preset signal quality threshold reaches a first preset duration threshold, the coding mode of the voice signal transmitted to the second mobile terminal from the first physical layer coding mode to the second physical layer coding mode;
the switching unit 503 is further configured to switch the coding mode of the voice signal transmitted to the second mobile terminal from the second physical layer coding mode to the first physical layer coding mode when the detecting unit 501 detects that the signal quality of the BLE network changes from being smaller than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold and the duration of the signal quality of the BLE network being greater than or equal to the preset signal quality threshold reaches the first preset duration threshold.
Optionally, the switching unit 503 is further configured to switch the coding mode of the voice signal transmitted to the second mobile terminal from the first physical layer coding mode to the second physical layer coding mode when the detecting unit 501 detects that the signal quality of the BLE network changes from being greater than or equal to the preset signal quality threshold to being less than the preset signal quality threshold, and the duration of the continuous decline of the signal quality of the BLE network is greater than a second preset duration threshold;
the switching unit 503 is further configured to switch the coding mode of the voice signal transmitted to the second mobile terminal from the second physical layer coding mode to the first physical layer coding mode when the detecting unit 501 detects that the signal quality of the BLE network changes from being smaller than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold, and the duration of the continuous rise of the signal quality of the BLE network is greater than the second preset duration threshold.
Optionally, the detecting unit 501 detects the signal quality of the BLE network, specifically: and detecting the RSSI (received signal strength indicator) of the Bluetooth of the first mobile terminal, or detecting the distance between the first mobile terminal and the second mobile terminal.
Optionally, if it is detected that the signal quality of the BLE network is greater than or equal to a preset signal quality threshold, the method specifically includes:
if the Bluetooth RSSI of the first mobile terminal is detected to be greater than or equal to a preset signal strength threshold value; or the like, or, alternatively,
and if the distance between the first mobile terminal and the second mobile terminal is detected to be smaller than or equal to a preset distance threshold value.
Optionally, if it is detected that the signal quality of the BLE network is less than the preset signal quality threshold, the method specifically includes:
if the Bluetooth RSSI of the first mobile terminal is detected to be smaller than the preset signal strength threshold value; or the like, or, alternatively,
and if the distance between the first mobile terminal and the second mobile terminal is smaller than the preset distance threshold value, judging whether the distance between the first mobile terminal and the second mobile terminal is smaller than the preset distance threshold value.
Optionally, the communication distance corresponding to the first physical layer coding mode is smaller than the communication distance corresponding to the second physical layer coding mode.
Optionally, the apparatus for dynamically adjusting encoding may further include a communication unit 504.
The communication unit 504 is configured to send a first voice data packet to the second mobile terminal after the encoding unit 502 encodes the voice signal transmitted to the second mobile terminal by using the first physical layer encoding method;
the communication unit 504 is further configured to continue to send a second voice data packet to the second mobile terminal when the acknowledgement message of the second mobile terminal for the first voice data packet is not received.
Optionally, the communication unit 504 is further configured to send a voice data packet to the second mobile terminal by using a first data packet sending frequency after the encoding unit 502 encodes the voice signal transmitted to the second mobile terminal by using a first physical layer encoding manner;
the communication unit 504 is further configured to send a voice data packet to the second mobile terminal by using a second data packet sending frequency after the encoding unit 502 encodes the voice signal transmitted to the second mobile terminal by using a second physical layer encoding manner; wherein the first packet transmission frequency is greater than the second packet transmission frequency.
The device for dynamically adjusting the coding shown in fig. 5 can dynamically adjust the physical layer coding mode according to the signal quality of the BLE network, and can meet the bluetooth voice call requirements of different scenes, thereby improving the voice call quality of the BLE network.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a mobile terminal disclosed in the embodiment of the present application. As shown in fig. 6, the mobile terminal 600 includes a processor 601 and a memory 602, wherein the mobile terminal 600 may further include a bus 603, the processor 601 and the memory 602 may be connected to each other through the bus 603, and the bus 603 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 603 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus. The mobile terminal 600 may also include an input/output device 604, where the input/output device 604 may include a display screen, such as a liquid crystal display screen. The memory 602 is used to store one or more programs containing instructions; processor 601 is configured to invoke instructions stored in memory 602 to perform some or all of the method steps described above in fig. 2-4.
By implementing the mobile terminal shown in fig. 6, the physical layer coding mode can be dynamically adjusted according to the signal quality of the BLE network, and the bluetooth voice call requirements of different scenes can be met, so that the voice call quality of the BLE network is improved.
Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods for dynamically adjusting codes as described in the above method embodiments.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the methods of dynamically adjusting encoding as set forth in the above method embodiments.
It should be noted that for simplicity of description, the above-mentioned method embodiments are shown as a series of combinations of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for dynamically adjusting coding, wherein the method is applied to a long-distance Bluetooth Low Energy (BLE) network through which a first mobile terminal and a second mobile terminal are connected, and the method comprises:
when the first mobile terminal carries out voice call, the first mobile terminal detects the signal quality of the BLE network;
if the signal quality parameter of the BLE network is detected to be greater than or equal to a preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a first physical layer encoding mode; the first mobile terminal sends a voice data packet to the second mobile terminal by adopting a first data packet sending frequency;
if the signal quality parameter of the BLE network is smaller than the preset signal quality threshold value, the first mobile terminal encodes the voice signal transmitted to the second mobile terminal in a second physical layer encoding mode; the bit rate corresponding to the first physical layer coding mode is greater than the bit rate corresponding to the second physical layer coding mode, and the communication distance corresponding to the second physical layer coding mode is greater than the communication distance corresponding to the first physical layer coding mode; the first mobile terminal sends a voice data packet to the second mobile terminal by adopting a second data packet sending frequency; the first data packet transmission frequency is greater than the second data packet transmission frequency;
and if the retransmission times of the data packets of the voice data packets transmitted to the second mobile terminal by the first mobile terminal reach the preset times, discarding the voice data packets and transmitting the next voice data packet.
2. The method according to claim 1, wherein after the first mobile terminal detects the signal quality of the BLE network, the method further comprises:
if it is detected that the signal quality parameter of the BLE network changes from being greater than or equal to the preset signal quality threshold to being smaller than the preset signal quality threshold, and the duration that the signal quality of the BLE network is smaller than the preset signal quality threshold reaches a first preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the first physical layer coding mode to the second physical layer coding mode;
if it is detected that the signal quality parameter of the BLE network changes from being smaller than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold, and the duration that the signal quality of the BLE network is greater than or equal to the preset signal quality threshold reaches the first preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the second physical layer coding mode to the first physical layer coding mode.
3. The method according to claim 1, wherein after the first mobile terminal detects the signal quality of the BLE network, the method further comprises:
if it is detected that the signal quality parameter of the BLE network changes from being greater than or equal to the preset signal quality threshold to being smaller than the preset signal quality threshold, and the duration of continuous decrease of the signal quality parameter of the BLE network is greater than a second preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the first physical layer coding mode to the second physical layer coding mode;
if it is detected that the signal quality parameter of the BLE network changes from being smaller than the preset signal quality threshold to being greater than or equal to the preset signal quality threshold, and the duration of the continuous rise of the signal quality parameter of the BLE network is greater than the second preset duration threshold, the first mobile terminal switches the coding mode of the voice signal transmitted to the second mobile terminal from the second physical layer coding mode to the first physical layer coding mode.
4. The method according to any one of claims 1 to 3, wherein the detecting, by the first mobile terminal, the signal quality of the BLE network comprises:
the first mobile terminal detects a bluetooth received signal strength indication, RSSI, or,
the first mobile terminal detects the distance between the first mobile terminal and the second mobile terminal.
5. The method according to claim 4, wherein the detecting that the signal quality parameter of the BLE network is greater than or equal to a predetermined signal quality threshold comprises:
if the Bluetooth RSSI of the first mobile terminal is detected to be greater than or equal to a preset signal strength threshold value; or the like, or, alternatively,
if the distance between the first mobile terminal and the second mobile terminal is smaller than or equal to a preset distance threshold value;
if it is detected that the signal quality parameter of the BLE network is less than the preset signal quality threshold, the method includes:
if the Bluetooth RSSI of the first mobile terminal is detected to be smaller than the preset signal strength threshold value; or the like, or, alternatively,
and if the distance between the first mobile terminal and the second mobile terminal is detected to be larger than the preset distance threshold value.
6. The method according to any of claims 1-3 and 5, wherein after the first mobile terminal encodes the voice signal transmitted to the second mobile terminal by using the first physical layer encoding method, the method further comprises:
the first mobile terminal sends a first voice data packet to the second mobile terminal;
and under the condition that the confirmation message of the second mobile terminal aiming at the first voice data packet is not received, the first mobile terminal continuously sends a second voice data packet to the second mobile terminal.
7. The method of claim 4, wherein after the first mobile terminal encodes the voice signal transmitted to the second mobile terminal using the first physical layer coding scheme, the method further comprises:
the first mobile terminal sends a first voice data packet to the second mobile terminal;
and under the condition that the confirmation message of the second mobile terminal aiming at the first voice data packet is not received, the first mobile terminal continuously sends a second voice data packet to the second mobile terminal.
8. An apparatus for dynamically adjusting encoding, wherein the apparatus for dynamically adjusting encoding is applied to a long-distance Bluetooth Low Energy (BLE) network, and a first mobile terminal and a second mobile terminal are connected through the BLE network, and the apparatus for dynamically adjusting encoding comprises:
the detecting unit is used for detecting the signal quality of the BLE network when the first mobile terminal carries out voice call;
the encoding unit is used for encoding the voice signal transmitted to the second mobile terminal by adopting a first physical layer encoding mode under the condition that the detection unit detects that the signal quality parameter of the BLE network is greater than or equal to a preset signal quality threshold;
a communication unit, configured to send a voice data packet to the second mobile terminal by using a first data packet sending frequency when the encoding unit encodes the voice signal transmitted to the second mobile terminal by using a first physical layer encoding manner;
the encoding unit is further configured to encode the voice signal transmitted to the second mobile terminal in a second physical layer encoding manner when the detection unit detects that the signal quality parameter of the BLE network is smaller than the preset signal quality threshold; the bit rate corresponding to the first physical layer coding mode is greater than the bit rate corresponding to the second physical layer coding mode, and the communication distance corresponding to the second physical layer coding mode is greater than the communication distance corresponding to the first physical layer coding mode;
the communication unit is further configured to send a voice data packet to the second mobile terminal by using a second data packet sending frequency when the encoding unit encodes the voice signal transmitted to the second mobile terminal by using a second physical layer encoding method; the first data packet transmission frequency is greater than the second data packet transmission frequency;
and the retransmission unit is used for discarding the voice data packet and transmitting the next voice data packet under the condition that the retransmission times of the data packet of the voice data packet transmitted to the second mobile terminal by the first mobile terminal reach the preset times.
9. A mobile terminal comprising a processor and a memory for storing one or more programs configured for execution by the processor, the programs comprising instructions for performing the method of any of claims 1-7.
10. A computer-readable storage medium for storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1 to 7.
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| CN112135282A (en) * | 2020-09-25 | 2020-12-25 | 北京百瑞互联技术有限公司 | Bluetooth Mesh network voice intercom method, system and storage medium |
| CN113539283A (en) * | 2020-12-03 | 2021-10-22 | 腾讯科技（深圳）有限公司 | Audio processing method and device based on artificial intelligence, electronic equipment and storage medium |
| CN114694662A (en) * | 2020-12-25 | 2022-07-01 | 华为技术有限公司 | Voice processing method, terminal device and storage medium |
| CN113315773B (en) * | 2021-05-31 | 2022-08-12 | 浙江大华技术股份有限公司 | Code rate adjusting method and device, electronic equipment and storage medium |
| CN114760603B (en) * | 2022-04-19 | 2023-09-05 | 安天科技集团股份有限公司 | Communication method, device, core network equipment and system of mobile terminal |
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