WO2021082672A1

WO2021082672A1 - Signal processing method, communication chip, and communication apparatus

Info

Publication number: WO2021082672A1
Application number: PCT/CN2020/111091
Authority: WO
Inventors: 贺超; 曾焱
Original assignee: 华为技术有限公司
Priority date: 2019-10-29
Filing date: 2020-08-25
Publication date: 2021-05-06
Also published as: CN112821920B; CN112821920A

Abstract

Provided are a signal processing method, a communication chip, and a communication apparatus. The signal processing method comprises: a communication apparatus receiving a first signal from an opposite-end communication apparatus within a first transmission period, wherein the first transmission period comprises a plurality of time windows, each time window has a corresponding communication parameter, and data frames transmitted within at least two time windows are modulated according to different communication parameters; if the difference between a channel quality parameter of a transmission channel corresponding to a first time window and a preset channel quality parameter is greater than a preset threshold, generating a first communication parameter corresponding to the first time window and a second communication parameter corresponding to a second time window, wherein the first communication parameter comprises a first adjustment amount and a first adjustment trend, the second communication parameter comprises a second adjustment amount and a second adjustment trend, and the first adjustment trend is opposite to the second adjustment trend; and the communication apparatus then sending the first communication parameter and the second communication parameter to the opposite-end communication apparatus.

Description

Signal processing method, communication chip and communication device

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 201911039317.5, and the invention title is "a signal processing method, communication chip, and communication device" on October 29, 2019. The entire content of the application is approved The reference is incorporated in this application.

Technical field

This application relates to the field of power line communication, and in particular to a signal processing method, a communication chip, and a communication device.

Background technique

Power line communication (PLC) technology mainly uses the widespread copper power line as the transmission medium, and performs signal modulation and demodulation through the baseband on the power line, so as to achieve the purpose of transmitting information.

In practical applications, power line communication equipment (such as power modems) and electrical equipment (household appliances, industrial equipment, etc.) usually work in the same network. Special circuit structures and components in electrical equipment (such as rectifier circuits, motors, etc.) will generate high-frequency signals in the power line network and interfere with power line communication signals. After an error packet occurs in a certain time window within a transmission period due to changes in the noise environment, the receiver will first retransmit, and after a certain number of retransmissions, it will perform channel estimation and re-estimate the communication parameters corresponding to the time window. However, in this technology, estimating the communication parameters corresponding to each time window is a mutually independent process, and each estimation of the communication parameters will cause bandwidth fluctuations, resulting in poor stability of the overall bandwidth of a transmission cycle.

Summary of the invention

The embodiments of the present application provide a signal processing method, a communication chip, and a communication device.

In the first aspect, an embodiment of the present application provides a signal processing method. The method includes the following steps.

The communication device receives a first signal from the peer communication device in a first transmission period, the first transmission period includes a plurality of time windows, each time window is used to transmit at least one data frame, and the first signal includes at least one time window For the data frames transmitted in each time window, each time window has a corresponding communication parameter, and the data frames transmitted in at least two time windows are modulated according to different communication parameters. If the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than the preset threshold, the first communication parameter corresponding to the first time window and the second communication parameter corresponding to the second time window are generated , The first communication parameter includes a first adjustment amount and a first adjustment trend, the second communication parameter includes a second adjustment amount and a second adjustment trend, the first adjustment trend is opposite to the second adjustment trend, and the second time window is the first transmission At least one time window in the cycle except the first time window. Furthermore, the communication device transmits the first communication parameter and the second communication parameter to the opposite communication device.

In this embodiment, each time window in a transmission period has a corresponding communication parameter. When the channel quality parameter of the transmission channel corresponding to the first time window changes due to changes in the noise environment, it may be the first time window. The first communication parameter is allocated to the time window, and the second communication parameter is allocated to the second time window, and the adjustment trend of the first communication parameter and the second communication parameter are opposite, then the rate can be carried out between the first time window and the second time window Complementarity makes the stability of the overall bandwidth of a transmission cycle better.

Optionally, in some possible implementation manners, if the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than the preset threshold, the method includes:

If the signal-to-noise ratio threshold minus the signal-to-noise ratio of the transmission channel corresponding to the first time window is greater than the first threshold, if the number of retransmissions of the first data frame transmitted in the first time window minus the number of retransmissions threshold At least one condition of the difference being greater than the second threshold and if the error rate of the first data frame minus the error rate threshold is greater than the third threshold.

In this embodiment, for the first time window in which the noise condition is poor, several specific trigger conditions for adjusting the communication parameters are listed, which improves the scalability of the solution.

Optionally, in some possible implementation manners, the first adjustment trend is a downward adjustment trend, the first adjustment amount includes the number of downward adjustment bits of the first subcarrier corresponding to the first time window, the second adjustment trend is an upward adjustment trend, and the second The adjustment amount includes the number of up-regulated bits of the second subcarrier corresponding to the second time window.

In this implementation manner, a possible specific form of the first communication parameter and the second communication parameter is exemplified, which improves the feasibility of the solution.

If the difference between the signal-to-noise ratio of the transmission channel corresponding to the first time window minus the signal-to-noise ratio threshold is greater than the first threshold and if the difference between the noise tolerance of the transmission channel corresponding to the first time window minus the noise tolerance threshold is greater than At least one condition in the fourth threshold.

In this embodiment, for the first time window with better noise, several specific trigger conditions for adjusting the communication parameters are listed, which further improves the scalability of the solution.

Optionally, in some possible implementation manners, the first adjustment trend is an upward adjustment trend, the first adjustment amount includes the number of upward adjustment bits of the first subcarrier corresponding to the first time window, the second adjustment trend is a downward adjustment trend, and The adjustment amount includes the number of down-regulated bits of the second subcarrier corresponding to the second time window.

In this implementation manner, another possible specific form of the first communication parameter and the second communication parameter is exemplified, which further improves the feasibility of the solution.

Optionally, in some possible implementation manners, the method further includes:

Increase the noise tolerance of the transmission channel corresponding to the first time window.

In this embodiment, since the noise situation is constantly changing, a margin is required to allocate bits for each time window. Then the noise tolerance of the transmission channel corresponding to the first time window is increased, so that the first time window can have a larger margin to cope with the increase in noise.

A first bit allocation table (BAT) and a first coding parameter are generated according to the first communication parameter, and a second BAT and a second coding parameter are generated according to the second communication parameter. Among them, the first coding parameter and the second coding parameter may include a modulation order, a forward error correction (FEC) code rate, and the like. Improve the practicability of this program.

Optionally, in some possible implementation manners, sending the first communication parameter and the second communication parameter to the peer communication device includes:

A target request is generated, and the target request includes the first communication parameter and the second communication parameter. Furthermore, the target request is sent to the opposite communication device.

In this implementation manner, a specific implementation manner for sending the first communication parameter and the second communication parameter to the peer communication device is provided, which further improves the practicability of the solution.

A first request and a second request are generated, the first request carries the first communication parameter, and the second request carries the second communication parameter. Furthermore, the first request and the second request are sent to the opposite communication device.

In this implementation manner, another specific implementation manner of sending the first communication parameter and the second communication parameter to the opposite-end communication device is provided, which improves the flexibility of the solution.

Optionally, in some possible implementation manners, after sending the first communication parameter and the second communication parameter to the peer communication device, the method further includes:

Receive the second signal from the peer communication device in the second transmission period. The second transmission period includes multiple time windows. The data frame transmitted by the second signal in the first time window is modulated according to the first communication parameter. The transmitted data frame of the signal in the second time window is modulated according to the second communication parameter.

In the second aspect, an embodiment of the present application provides a communication device, including:

The processor, the memory and the transceiver, the processor, the memory, and the transceiver are interconnected by wires, and the memory is stored with instructions;

The transceiver is used to receive the first signal from the peer communication device in the first transmission period. The first transmission period includes multiple time windows. Each time window is used to transmit at least one data frame. The first signal includes at least one time window. For the data frames transmitted in the window, each time window has a corresponding communication parameter, and the data frames transmitted in at least two time windows are modulated according to different communication parameters;

If the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than the preset threshold, the processor is configured to generate the first communication parameter corresponding to the first time window and the second communication parameter corresponding to the second time window. The second communication parameter, the first communication parameter includes the first adjustment amount and the first adjustment trend, the second communication parameter includes the second adjustment amount and the second adjustment trend, the first adjustment trend is opposite to the second adjustment trend, and the second time window Is at least one time window other than the first time window in the first transmission period;

The transceiver is used to send the first communication parameter and the second communication parameter to the peer communication device.

Optionally, in some possible implementation manners, the processor is further used to:

Generating a first bit allocation table BAT and a first coding parameter according to the first communication parameter;

The second BAT and the second encoding parameter are generated according to the second communication parameter.

Generating a target request, the target request carrying the first communication parameter and the second communication parameter;

The transceiver is specifically used for:

Send a target request to the opposite communication device.

Generating a first request and a second request, the first request carrying the first communication parameter, and the second request carrying the second communication parameter;

The transceiver is specifically used for:

Send the first request and the second request to the opposite communication device.

Optionally, in some possible implementation manners, the transceiver is also used for:

In the third aspect, an embodiment of the present application provides a communication chip, including a processor and a memory, the memory and the processor are interconnected by wires, the memory is stored with instructions, and the processor is used to execute any one of the above-mentioned implementations of the first aspect. Signal processing method.

In a fourth aspect, an embodiment of the present application provides a computer storage medium, including instructions, which when run on a computer, cause the computer to execute the signal processing method in any of the above-mentioned embodiments of the first aspect.

In the fifth aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the signal processing method in any one of the embodiments of the first aspect.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

In the embodiment of the present application, each time window in a transmission period has a corresponding communication parameter. When the channel quality parameter of the transmission channel corresponding to the first time window changes due to changes in the noise environment, the first time window may be the first time window. The first communication parameter is allocated to the time window, and the second communication parameter is allocated to the second time window, and the adjustment trend of the first communication parameter and the second communication parameter are opposite, then the rate can be carried out between the first time window and the second time window Complementarity makes the stability of the overall bandwidth of a transmission cycle better.

Description of the drawings

Figure 1 is a schematic diagram of a transmission period divided into multiple time windows;

Figure 2 is a schematic diagram of dividing time windows in a transmission period according to noise conditions;

FIG. 3 is a schematic diagram of an embodiment of the signal processing method in this application;

Figure 4 is a schematic diagram of bit swapping between time windows;

Fig. 5 is a schematic structural diagram of a possible communication device.

Detailed ways

The embodiments of the present application provide a signal processing method, a communication chip, and a communication device. Each time window in a transmission period has a corresponding communication parameter. When the channel quality parameter of the transmission channel corresponding to the first time window changes due to changes in the noise environment, the first time window can be assigned the first communication Parameters, and the second communication parameters are assigned to the second time window, and the adjustment trends of the first communication parameters and the second communication parameters are opposite, then the first time window and the second time window can be complementary in rate, so that one transmission cycle The stability of the overall bandwidth is better.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, without having to use To describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

This application is mainly applied in a communication scenario where multiple time windows (communication windows) are divided based on a transmission period. For example, Fig. 1 is a schematic diagram of a transmission period divided into multiple time windows. In the protocol design of the power line communication, according to the channel characteristics of the power line, two alternating current (Alternating Current, AC) cycles can be used as the medium access control (MAC) cycle of the protocol communication. Furthermore, a MAC cycle is divided into multiple time windows in the time domain according to the impedance change characteristics of the electrical appliance, so as to maximize the utilization of the channel capacity. As shown in Figure 1, an AC cycle is divided into 4 time windows, and each time window uses independent communication parameters for communication.

Figure 2 is a schematic diagram of dividing time windows in a transmission period according to noise conditions. Take the noise generated by household electrical appliances at work as an example. In different AC cycle positions, the noise generated by household electrical appliances is not the same. Then the time window can be divided based on the noise situation, and different communication parameters can be used in different time windows. To communicate.

The following describes a signal processing method provided by an embodiment of the present application:

Referring to FIG. 3, an embodiment of the signal processing method of the present application includes:

301. Receive a first signal from a peer communication device in a first transmission period.

In this embodiment, the first transmission period includes multiple time windows, where the division of the time windows needs to ensure that each time window can transmit at least one complete data frame. It is understandable that, in practical applications, within a transmission period, time windows can be divided in an equal length manner, or time windows can be divided in an unequal length manner, which is not specifically limited here. In addition, there may be multiple types of transmission periods in this application. For example, the transmission period may be an AC period or a MAC period as shown in FIG. 1, which is not specifically limited here.

The first signal specifically includes data frames transmitted in at least one time window. That is, the first signal may be a data frame transmitted in a certain time window, or may be a data frame transmitted in multiple time windows.

It should be noted that each time window has a corresponding communication parameter, that is, the data frame transmitted in each time window is modulated by the corresponding communication parameter. In addition, since noise conditions may be different in different periods of a transmission period, the communication parameters corresponding to at least two time windows in the first transmission period are different.

302. If the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than the preset threshold, generate the first communication parameter corresponding to the first time window and the second communication parameter corresponding to the second time window. Communication parameters.

In this embodiment, the communication device monitors the received first signal. Specifically, it needs to collect the channel quality parameters of the transmission channels corresponding to each time window, and determine whether the channel quality parameters meet the trigger condition to trigger the adjustment of the time window. Corresponding communication parameters. Wherein, the first communication parameter includes a first adjustment amount and a first adjustment trend, the second communication parameter includes a second adjustment amount and a second adjustment trend, and the first adjustment trend is opposite to the second adjustment trend. It can be understood that the second time window is at least one time window other than the first time window in the first transmission period.

It should be noted that the above-mentioned first adjustment amount indicates an adjustment amount for the number of bits carried by the first subcarrier corresponding to the first time window, and the second adjustment amount indicates an adjustment amount for the number of bits carried by the second subcarrier corresponding to the second time window. The amount of adjustment. The first adjustment trend includes a trend to increase or decrease the number of bits carried by the first subcarrier, and the second adjustment trend includes a trend to increase or decrease the number of bits carried by the second subcarrier. Extensibly, increasing or decreasing the number of bits carried by subcarriers can be replaced by increasing or decreasing other parameters that can change the quality of the transmission channel. For the convenience of description, the corresponding adjustment amount and adjustment trend are expressed by adjusting the number of bits up or down below. For example, if the number of down-regulated bits of the first subcarrier corresponding to the first time window is determined, correspondingly, the number of up-regulated bits of the second subcarrier corresponding to the second time window needs to be determined. If the number of up-regulated bits of the first subcarrier corresponding to the first time window is determined, correspondingly, the number of down-regulated bits of the second subcarrier corresponding to the second time window needs to be determined.

It should be noted that the above-mentioned trigger conditions can be specific, and the corresponding communication parameter adjustment strategies based on different trigger conditions are also different, which will be introduced separately as follows:

The first is that if there is a first time window with poor noise in the first transmission period, and there is also a second time window with good noise, then bit exchange can be performed based on the first time window and the second time window.

Specifically, the channel quality parameter of the transmission channel corresponding to the first time window satisfies at least one of the following three first trigger conditions to trigger the communication device to generate the first communication parameter corresponding to the first time window and the second time window corresponding The second communication parameter. Among them, the three first trigger conditions are as follows:

1. The signal-to-noise ratio threshold minus the signal-to-noise ratio of the transmission channel corresponding to the first time window is greater than the first threshold.

2. The difference between the retransmission times of the first data frame minus the retransmission times threshold is greater than the second threshold.

3. The error rate of the first data frame minus the error rate threshold is greater than the third threshold.

It should be noted that since the noise situation in the first time window is poor, the number of down-regulated bits of the first subcarrier corresponding to the first time window needs to be determined. In order to make the overall bandwidth of a transmission period more stable, it is also necessary The number of up-regulated bits of the second subcarrier corresponding to the second time window is determined.

Further, the communication device may generate a first bit allocation table (Bit allocation table, BAT) and the first coding parameter according to the number of down-regulated bits corresponding to the first time window, and generate the second BAT and the first encoding parameter according to the number of up-regulated bits corresponding to the second time window. The second encoding parameter. Wherein, the first bit allocation table may record the number of bits carried by the first subcarrier corresponding to the first time window. The second bit allocation table may record the number of bits carried by the second subcarrier corresponding to the second time window. The coding parameters may include modulation order and forward error correction (FEC) code rate. It is understandable that in order to improve the anti-noise ability, a higher FEC code rate needs to be configured.

Optionally, the first time window may be a certain time window in the first transmission period, or may include multiple time windows in the first transmission period. That is to say, in practical applications, the communication parameters corresponding to each time window can be adjusted one by one, or the communication parameters corresponding to multiple time windows can be adjusted at once.

It should be noted that when deploying services, it is usually required that the rate of power line communication cannot have large fluctuations. The goal is to maintain a stable rate, which requires that the sum of the rates of multiple time windows of a transmission cycle remain unchanged. It can be understood that, in order to ensure that the total communication rate of the first transmission period remains unchanged, the number of down-regulated bits of the first subcarrier corresponding to the first time window should be less than or equal to the up-regulated bits of the second subcarrier corresponding to the second time window. number. In other words, the second time window has enough margin to compensate for the number of bits reduced in the first time window. In this case, the communication device can determine the first bit allocation table and the second bit allocation table according to the number of down-regulated bits of the first subcarrier corresponding to the first time window, that is, the first time window is set in the second time window. The number of bits in the lower adjustment is added.

For example, Figure 4 is a schematic diagram of bit swapping between time windows. An AC or MAC cycle includes a total of 8 time windows of AH. The first time window includes C time window, D time window and E time window, and the second time window includes A time window, B time window, F time window and H time. window. The communication device acquires the sum of the number of down-regulated bits of the C time window, the D time window, and the E time window as Bit1, and acquires the sum of the up-regulated bits of the A time window, the B time window, the F time window, and the H time window as Bit2, because Bit2 is greater than Bit1, then you can reduce the number of bits with the sum of Bit1 in the first bit allocation table for C time window, D time window, and E time window, and give A time window, B time window, and F time window in the second bit allocation table. The time window and the H time window increase the total number of bits as Bit1. As for the specific increase or decrease of each time window, there is no limitation here.

In addition, in practical applications, the second time window does not always have enough margin to compensate for the number of bits reduced in the first time window. That is, if the number of up-regulated bits is less than the number of down-regulated bits (Bit2 is less than Bit1), the sum of the rates of multiple time windows of the first transmission period needs to be reduced. Specifically, in order to make the rate of reduction smaller, the communication device can use the margin of the second time window as much as possible to compensate for the number of bits reduced in the first time window. For example, in the first bit allocation table, reduce the number of bits with the sum of Bit1 for the C time window, D time window and E time window, and increase the sum of Bit2 for the A time window, B time window, F time window and H time window. As for the specific increase or decrease of the number of bits in each time window, there is no limit here.

Second, if there is a first time window with good noise in the first transmission period, and there is also a second time window with poor noise, then bit swapping can also be performed based on the first time window and the second time window .

Specifically, the channel quality parameter of the transmission channel corresponding to the first time window satisfies at least one of the following two second trigger conditions to trigger the communication device to generate the first communication parameter corresponding to the first time window and the second time window corresponding The second communication parameter. Among them, the two second trigger conditions are as follows:

1. The signal-to-noise ratio of the transmission channel corresponding to the first time window minus the signal-to-noise ratio threshold is greater than the first threshold.

2. The noise margin (SNR Margin) of the transmission channel corresponding to the first time window is greater than the fourth threshold.

It should be noted that since the noise situation in the first time window is better, the number of up-regulated bits of the first subcarrier corresponding to the first time window can be determined, so even if the noise situation in the second time window is poor, the second time window needs to be down-regulated. The number of bits of the second subcarrier corresponding to the time window can still maintain the stability of the overall bandwidth of a transmission period.

It is understandable that since the noise situation is constantly changing, a margin is required to allocate bits for each time window. Its function is that if the noise of a certain time window suddenly becomes larger, the data transmitted in the time window can use the margin to ensure normal transmission without dropping the line. This margin can be referred to as the noise margin, and the larger the noise margin, the better the noise in the time window.

Further, the communication device may generate the first BAT and the first encoding parameter according to the number of upwardly adjusted bits corresponding to the first time window, and generate the second BAT and the second encoding parameter according to the number of downwardly adjusted bits corresponding to the second time window.

Optionally, since the first time window has greater bandwidth redundancy, the communication device may also increase the noise tolerance of the transmission channel corresponding to the first time window.

It should be noted that this application includes but is not limited to the first trigger condition and the second trigger condition listed above, and other possible trigger conditions for channel quality parameter changes due to changes in noise are all within the protection scope of this application.

Optionally, in addition to the two communication parameter adjustment strategies based on different trigger conditions listed above, the communication device may also search for a communication parameter template corresponding to the time window from the communication parameter database according to the monitoring of noise. Specifically, the communication device may perform spectrum analysis on the signal transmitted within the time window to obtain a noise power spectrum, where the noise power spectrum includes the noise power corresponding to different frequency points of the signal, respectively. The communication parameter data records the mapping relationship between the noise power spectrum and the communication parameter, and the communication device can find the communication parameter corresponding to the input noise power spectrum from the communication parameter template library.

303. Send the first communication parameter and the second communication parameter to the opposite-end communication device.

In this embodiment, the communication device sends the generated first communication parameter and second communication parameter to the peer communication device. Specifically, the communication device initiates a target request to the peer communication device, and the target request may carry the first communication parameter and the second communication parameter. After receiving the target request, the peer communication device will reply with a confirmation message, and then use the first communication parameter and the second communication parameter to respectively modulate and send the signal to be sent.

Optionally, the communication device may also send the first communication parameter and the second communication parameter to the peer communication device in batches. For example, the communication device generates the first request and the second request, where the first request carries the first communication. Parameter, the second request carries the second communication parameter. Furthermore, the communication device sends the first request and the second request to the opposite communication device.

It should be noted that the peer communication device may use the first communication parameter to modulate the data frame number transmitted in the first time window of the next transmission period, and use the second communication parameter to modulate the second time window of the next transmission period The frame number of the data transmitted within is modulated.

The signal processing method in the embodiment of the present application is described above, and the communication device in the embodiment of the present application is described below:

Fig. 5 is a schematic structural diagram of a possible communication device. The communication device includes a processor 501, a memory 502, and a transceiver 503. The processor 501, the memory 502, and the transceiver 503 are interconnected by wires, where the memory 502 is used to store program instructions and data. The transceiver 503 includes a transmitter and a receiver. It should be noted that the communication device may be a device that implements the signal processing method in the embodiment shown in FIG. 3 above.

In a possible implementation manner, the memory 502 stores program instructions and data supporting the steps shown in FIG. 3, and the processor 501 and the transceiver 503 are used to execute the method steps shown in FIG. 3. Specifically, the processor 501 is configured to perform step 302, and the transceiver 503 is configured to perform step 301 and step 303.

The embodiment of the present application also provides a communication chip. The communication chip integrates a circuit and one or more interfaces for realizing the functions of the above-mentioned processor 501. When the memory is integrated in the chip, the chip can complete the method steps of any one or more of the foregoing embodiments. When the chip is not integrated with memory, it can be connected to an external memory through an interface. The chip implements the actions performed by the transmitter in the foregoing embodiment according to the program code stored in the external memory.

A person of ordinary skill in the art can understand that all or part of the steps in the above embodiments can be implemented by hardware, or by a program to instruct relevant hardware. The program can be stored in a computer-readable storage medium. The storage medium mentioned can be a read-only memory, a random access memory and so on. Specifically, for example: the above-mentioned processing unit or processor may be a central processing unit, a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device , Transistor logic devices, hardware components, or any combination thereof. Whether the above-mentioned functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

When implemented by software, the method steps described in the above embodiments may be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Finally, it should be noted that the above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Anyone skilled in the art can easily fall within the technical scope disclosed in this application. Any change or replacement should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A signal processing method, characterized in that it comprises:

A first signal from a communication device at the opposite end is received in a first transmission period, the first transmission period includes a plurality of time windows, each of the time windows is used to transmit at least one data frame, and the first signal is included in Data frames transmitted in at least one of the time windows, each of the time windows has a corresponding communication parameter, and the data frames transmitted in at least two of the time windows are modulated according to different communication parameters;

If the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than the preset threshold, the first communication parameter corresponding to the first time window and the corresponding communication parameter corresponding to the second time window are generated. The second communication parameter, the first communication parameter includes a first adjustment amount and a first adjustment trend, the second communication parameter includes a second adjustment amount and a second adjustment trend, and the first adjustment trend is the same as the second adjustment trend. The adjustment trend is opposite, and the second time window is at least one time window excluding the first time window in the first transmission period;

Sending the first communication parameter and the second communication parameter to the opposite communication device.
The method according to claim 1, wherein if the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than a preset threshold, the method comprises:

If the signal-to-noise ratio threshold minus the signal-to-noise ratio of the transmission channel corresponding to the first time window is greater than the first threshold, if the number of retransmissions of the first data frame transmitted in the first time window is subtracted At least one condition of the difference between the transmission times threshold being greater than the second threshold and if the error rate of the first data frame minus the error rate threshold is greater than the third threshold.
The method according to claim 2, wherein the first adjustment trend is a downward adjustment trend, the first adjustment amount includes the number of downward adjustment bits of the first subcarrier corresponding to the first time window, and the first adjustment The second adjustment trend is an upward adjustment trend, and the second adjustment amount includes the number of upward adjustment bits of the second subcarrier corresponding to the second time window.
The method according to claim 1, wherein if the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than a preset threshold, the method comprises:

If the signal-to-noise ratio of the transmission channel corresponding to the first time window minus the signal-to-noise ratio threshold is greater than the first threshold, and if the noise tolerance of the transmission channel corresponding to the first time window is subtracted from the noise tolerance threshold The difference of is greater than at least one condition in the fourth threshold.
The method according to claim 4, wherein the first adjustment trend is an upward adjustment trend, the first adjustment amount includes the number of upward adjustment bits of the first subcarrier corresponding to the first time window, and the first The second adjustment trend is a downward adjustment trend, and the second adjustment amount includes the number of downward adjustment bits of the second subcarrier corresponding to the second time window.
The method according to claim 4 or 5, wherein the method further comprises:

Increase the noise tolerance of the transmission channel corresponding to the first time window.
The method according to any one of claims 1 to 6, wherein the method further comprises:

Generating a first bit allocation table BAT and a first coding parameter according to the first communication parameter;

A second BAT and a second encoding parameter are generated according to the second communication parameter.
The method according to any one of claims 1 to 7, wherein sending the first communication parameter and the second communication parameter to the opposite-end communication device comprises:

Generating a target request, the target request carrying the first communication parameter and the second communication parameter;

Sending the target request to the opposite communication device.
The method according to any one of claims 1 to 7, wherein sending the first communication parameter and the second communication parameter to the opposite-end communication device comprises:

Generating a first request and a second request, the first request carrying the first communication parameter, and the second request carrying the second communication parameter;

Sending the first request and the second request to the opposite communication device.
The method according to any one of claims 1 to 9, wherein after sending the first communication parameter and the second communication parameter to the peer communication device, the method further comprises:

Receive a second signal from the peer communication device in a second transmission period, where the second transmission period includes the multiple time windows, and the second signal transmits data in the first time window The frame is modulated according to the first communication parameter, and the transmitted data frame of the second signal in the second time window is modulated according to the second communication parameter.
A communication device, characterized in that it comprises:

A processor, a memory, and a transceiver, where the processor, the memory, and the transceiver are interconnected by wires, and the memory stores instructions;

The transceiver is configured to receive a first signal from a peer communication device in a first transmission period, the first transmission period includes a plurality of time windows, each of the time windows is used to transmit at least one data frame, the The first signal includes data frames transmitted in at least one of the time windows, each of the time windows has a corresponding communication parameter, and the data frames transmitted in at least two of the time windows are modulated according to different communication parameters;

If the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than the preset threshold, the processor is configured to generate the first communication parameter corresponding to the first time window and the The second communication parameter corresponding to the second time window, the first communication parameter includes a first adjustment amount and a first adjustment trend, the second communication parameter includes a second adjustment amount and a second adjustment trend, the first adjustment The trend is opposite to the second adjustment trend, and the second time window is at least one time window excluding the first time window in the first transmission period;

The transceiver is configured to send the first communication parameter and the second communication parameter to the peer communication device.
The communication device according to claim 11, wherein if the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than a preset threshold, the method comprises:

If the signal-to-noise ratio threshold minus the signal-to-noise ratio of the transmission channel corresponding to the first time window is greater than the first threshold, if the number of retransmissions of the first data frame transmitted in the first time window is subtracted At least one condition of the difference between the transmission times threshold being greater than the second threshold and if the error rate of the first data frame minus the error rate threshold is greater than the third threshold.
The communication device according to claim 12, wherein the first adjustment trend is a downward adjustment trend, and the first adjustment amount includes the number of downward adjustment bits of the first subcarrier corresponding to the first time window, and the The second adjustment trend is an upward adjustment trend, and the second adjustment amount includes the number of upward adjustment bits of the second subcarrier corresponding to the second time window.
The communication device according to claim 11, wherein if the difference between the channel quality parameter of the transmission channel corresponding to the first time window and the preset channel quality parameter is greater than a preset threshold, the method comprises:

If the signal-to-noise ratio of the transmission channel corresponding to the first time window minus the signal-to-noise ratio threshold is greater than the first threshold, and if the noise tolerance of the transmission channel corresponding to the first time window is subtracted from the noise tolerance threshold The difference of is greater than at least one condition in the fourth threshold.
The communication device according to claim 14, wherein the first adjustment trend is an upward adjustment trend, and the first adjustment amount includes the number of upward adjustment bits of the first subcarrier corresponding to the first time window, and the The second adjustment trend is a downward adjustment trend, and the second adjustment amount includes the number of downward adjustment bits of the second subcarrier corresponding to the second time window.
The communication device according to claim 14 or 15, wherein the processor is further configured to:

Increase the noise tolerance of the transmission channel corresponding to the first time window.
The communication device according to any one of claims 11 to 16, wherein the processor is further configured to:

Generating a first bit allocation table BAT and a first coding parameter according to the first communication parameter;

A second BAT and a second encoding parameter are generated according to the second communication parameter.
The communication device according to any one of claims 11 to 17, wherein the processor is further configured to:

Generating a target request, the target request carrying the first communication parameter and the second communication parameter;

The transceiver is specifically used for:

Sending the target request to the opposite communication device.
The communication device according to any one of claims 11 to 17, wherein the processor is further configured to:

Generating a first request and a second request, the first request carrying the first communication parameter, and the second request carrying the second communication parameter;

The transceiver is specifically used for:

Sending the first request and the second request to the opposite communication device.
The communication device according to any one of claims 11 to 19, wherein the transceiver is further used for:

Receive a second signal from the peer communication device in a second transmission period, where the second transmission period includes the multiple time windows, and the second signal transmits data in the first time window The frame is modulated according to the first communication parameter, and the transmitted data frame of the second signal in the second time window is modulated according to the second communication parameter.
A communication chip, characterized by comprising a processor and a memory, the memory and the processor are interconnected by wires, the memory is stored with instructions, and the processor is configured to execute any one of claims 1 to 10 The signal processing method of the item.