WO2020181991A1

WO2020181991A1 - Joint decoding method and related device

Info

Publication number: WO2020181991A1
Application number: PCT/CN2020/076872
Authority: WO
Inventors: 陈国海; 杨博; 陈鹏; 胡寅亮
Original assignee: 华为技术有限公司
Priority date: 2019-03-08
Filing date: 2020-02-27
Publication date: 2020-09-17
Also published as: CN111669203A

Abstract

Disclosed in embodiments of the present application are a joint decoding method and a related device, the joint decoding method comprising: a first device acquiring sub-carrier quality information of at least one second device, acquiring corresponding sub-carrier data on the at least one second device on the basis of the sub-carrier quality information, and then combining sub-carrier data of the first device and the acquired sub-carrier data to carry out joint decoding. Compared to the prior art, the first device in embodiments of the present application may acquire the data transmitted on a high quality sub-carrier of the second device on the basis of the sub-carrier quality information of the second device to carry out joint decoding, so that decoding accuracy may be improved when the first device uses a relatively high MCS to receive data.

Description

A joint decoding method and related equipment

This application claims the priority of a Chinese patent application filed with the China Intellectual Property Office on March 8, 2019, the application number is 201910174550.8, and the application name is "a joint decoding method and related equipment", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of communication technology, and in particular to a joint decoding method and related equipment.

Background technique

Multiple Input Multiple Output (MIMO) technology has gradually become the mainstream signal transmission technology in wireless communication systems. The so-called MIMO technology means that the transmitter includes multiple antennas. When transmitting signals, the transmitter can transmit signals to multiple receivers at the same time and on the same frequency. In addition, considering the problem of signal interference, the distance between each adjacent two antennas of the multiple antennas of the transmitter needs to be greater than a certain value. Based on this, due to the limitation of the device size of the transmitter, the number of antennas included in the transmitter will be limited, that is, when signals are transmitted through MIMO technology, the signal transmission efficiency will be limited by the device size of the transmitter. On this basis, in order to further improve signal transmission efficiency, a distributed MIMO technology is proposed. Distributed MIMO technology refers to coordinating multiple spatially independent transmitters to send signals to multiple receivers at the same time and on the same frequency. Each of the multiple transmitters has an independent radio frequency chain. And each transmitter can include multiple antennas. In this way, when sending signals, more independent transmitters can be deployed to further improve the data transmission efficiency, and at the same time, it can be ensured that the equipment size of each transmitter does not have to be too large or too complicated.

Channel State Information (CSI) is used to indicate the channel attributes of the communication link, and it describes the attenuation factor of the signal on each transmission path. For subcarriers, the CSI of each subcarrier between the same pair of transmitting and receiving antennas is different. The deeper the attenuation, the greater the attenuation of the signal, which may lead to signal reception failure.

In the prior art, different subcarriers use different Modulation and Coding Schemes (MCS). In order to ensure the correct transmission of data, a suitable MCS is usually selected for data transmission and reception according to the signal strength of all subcarriers. . At the same time, a dynamic MCS adjustment strategy is adopted, first try to use a high MCS, and use a low MCS for data transmission after the transmission fails. Use the dynamic MCS adjustment strategy to overcome the adverse effects of sub-carrier deep fading. The deep fading of some sub-carriers lowers the MCS of all sub-carriers of the channel. Originally, most sub-carriers can use higher MCS. Only a lower MCS can be used. If all sub-carriers still use a higher MCS at this time, the decoding accuracy of the receiving device will be reduced.

Summary of the invention

The embodiments of the present application provide a joint decoding method and related equipment, which can improve the decoding accuracy of the receiving equipment.

In the first aspect, embodiments of the present application provide a joint decoding method, which can be applied to a distributed MIMO system, and the method includes:

The first device obtains subcarrier quality information of at least one second device, where the subcarrier quality information is the quality information of the subcarrier used by the source device to transmit data to the at least one second device; the first device obtains at least one second device. After the subcarrier quality information of the second device, obtain the subcarrier data of the at least one second device based on the subcarrier quality information of the at least one second device;

The first device performs joint decoding based on its own subcarrier data and the acquired subcarrier data of the at least one second device.

Among them, the first device may also be referred to as the primary receiving device, and the second device may also be referred to as the secondary receiving device.

In the method provided by the embodiment of the present application, the first device obtains the subcarrier quality information of at least one second device, obtains the subcarrier data of the at least one second device based on the subcarrier quality information, and then obtains the subcarrier data of the at least one second device based on its own subcarrier data and The acquired subcarrier data of at least one second device is jointly decoded. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy of the receiving device will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the subcarrier of the second device and perform joint decoding based on the quality information of the subcarrier of the second device. In this way, the first device When the equipment uses a higher MCS to receive data, it can improve the decoding accuracy.

In a possible design, the first device may obtain the subcarrier quality information of at least one second device in the following manner, namely:

The first device sends a subcarrier quality request message to the at least one second device, where the subcarrier quality request message includes subcarrier number information, and the subcarrier quality request message is used to instruct the at least one second device Feeding back the subcarrier quality information corresponding to the subcarrier number information to the first device;

Receiving subcarrier quality information corresponding to the subcarrier number information fed back by the at least one second device.

In this case, the first device can select the quality information of the subcarrier to be acquired based on its own subcarrier quality information, and then send a subcarrier quality request message to acquire the quality information of at least one subcarrier corresponding to the second device, so as to facilitate Then obtain the corresponding subcarrier data.

Optionally, the subcarrier quality request message may also include subcarrier quality indication information, and the subcarrier quality indication information is used to instruct at least one second device to feed back to the first device subcarriers that meet the requirements of the subcarrier quality indication information Quality information. In this way, only subcarrier quality information that meets the subcarrier quality requirements needs to be fed back to the first device, which can reduce the amount of quality information received by the first device and improve the processing efficiency of the first device.

Optionally, the subcarrier quality request message may further include message type information, and the message type information is used to indicate that the message sent by the first device is a subcarrier quality request message.

Optionally, the subcarrier quality request message may further include a message identifier, and the message identifier is used to distinguish which subcarrier quality request message the subcarrier quality request message is.

In a possible design, the first device may also obtain the subcarrier quality information of at least one second device in the following manner, namely:

The first device receives the subcarrier quality information of the at least one second device fed back by the third device. In this case, the first device may obtain the subcarrier quality information of the at least one second device through other devices, for example, obtain the subcarrier quality information of the at least one second device through the controller. In this way, the first device does not need to send a subcarrier quality request message, which simplifies the processing procedure of the first device.

Optionally, the subcarrier quality information of the at least one second device fed back by the third device may be processed by the third device in advance. Taking the third device as an example of the controller, the controller may transfer the at least one second device The sent subcarrier quality information is filtered, and the filtered subcarrier quality information is fed back to the first device. Exemplarily, the screening process may be based on the central processor load of the second device and the egress link load of the second device.

In a possible design, the first device may obtain subcarrier data based on the subcarrier quality information of the at least one second device in the following manner, namely:

The first device sends a subcarrier data request message to the at least one second device, where the subcarrier data request message includes second subcarrier number information, and the subcarrier data request message is used to instruct the at least one second device The second device feeds back the subcarrier data corresponding to the subcarrier number information to the first device;

Receiving subcarrier data corresponding to the subcarrier number information sent by the at least one second device.

In this case, the first device determines the number of the subcarrier for which subcarrier data needs to be fed back based on the subcarrier quality information of the at least one second device, and sends a subcarrier data request including the subcarrier number information to the at least one second device Message to obtain the subcarrier data corresponding to the subcarrier number information.

Optionally, the subcarrier data request message includes device identification information, and the device identification information is used to indicate a second device that needs to feed back subcarrier data. By carrying the device identification information in the subcarrier data request message, the second device that needs to feed back the subcarrier data can be indicated, which can reduce the amount of data received by the first device and improve the data processing efficiency of the first device.

In a possible design, the first device may also obtain subcarrier data based on the subcarrier quality information of the at least one second device in the following manner, namely:

The first device sends a subcarrier data request message to the at least one second device respectively, where the subcarrier data request message includes subcarrier number information and device identification information, and the subcarrier number information is used to indicate which ones need to be fed back Subcarrier data of the subcarrier, where the device identification information is used to indicate the second device that needs to feed back the subcarrier data;

Respectively receiving the subcarrier data corresponding to the subcarrier number information sent by the at least one second device.

In this case, the first device determines, based on the subcarrier quality information of at least one second device, the number of the subcarrier for which each second device needs to feed back subcarrier data, and respectively sends the subcarrier number including the subcarrier number to at least one second device Information and the subcarrier data request message of the device identification information to obtain the subcarrier data corresponding to the subcarrier number information.

Optionally, before the first device separately sends the subcarrier data request message to the at least one second device, the first device may also determine that feedback is required based on the subcarrier quality information of the at least one second device The at least one second device of subcarrier data and the data on which subcarriers are fed back by the at least one second device respectively.

In a possible design, before the first device obtains the subcarrier quality information of at least one second device, the first device determines its own subcarrier quality information, and determines that it needs to obtain at least one subcarrier quality information based on its own subcarrier quality information. Which subcarrier quality information of the second device.

It should be pointed out that in the specific implementation process, the first device may include a decoding unit. In this case, the joint decoding operation can be completed on the first device. The first device may not include a decoding unit. In this case, the first device may send its own subcarrier data and the acquired subcarrier data of at least one second device to the decoding device, and the decoding device will complete the process. Joint decoding operation.

It is understandable that in the case where the decoding unit and the first device are independent of each other, the decoding unit may also directly receive subcarrier data, that is, the first device sends a data request message, and the decoding unit receives a data response message.

In the second aspect, embodiments of the present application provide a joint decoding method, which can be applied to a distributed MIMO system, and the method includes:

The second device receives a subcarrier quality request message sent by the first device, where the subcarrier quality request message includes first subcarrier number information, and the subcarrier quality request message is used to instruct the second device to send a message to the first The device feeds back the quality information of the subcarrier corresponding to the first subcarrier number information;

Sending, by the second device, the quality information of the subcarrier corresponding to the first subcarrier number to the first device;

The second device receives a subcarrier data request message sent by the first device, where the subcarrier data request message includes second subcarrier number information, and the subcarrier data request message is used to instruct the second device to send Feeding back data of the subcarrier corresponding to the second subcarrier number by the first device;

The second device sends data of the subcarrier corresponding to the second subcarrier number to the first device, where the data of the subcarrier is used by the first device for joint decoding.

In the method provided by the embodiment of the present application, the second device feeds back the subcarrier quality information to the first device by receiving the subcarrier quality request message, and then receives the subcarrier data request message determined based on the subcarrier quality information sent by the first device, And the corresponding subcarrier data is fed back to the first device, so that the first device can perform joint decoding. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the subcarrier of the second device and perform joint decoding based on the quality information of the subcarrier of the second device. In this way, the first device When the equipment uses a higher MCS to receive data, it can improve the decoding accuracy.

In a possible design, the sending, by the second device, to the first device, the quality information of the subcarrier corresponding to the first subcarrier number includes:

The second device determines the quality information of the subcarrier corresponding to the first subcarrier number according to the first subcarrier number, and sends a subcarrier quality response message to the first device, the subcarrier quality response message The quality information of the subcarrier corresponding to the first subcarrier number is included.

In a possible design, the sending, by the second device, to the first device the data of the subcarrier corresponding to the second subcarrier number includes:

The second device determines the data of the subcarrier corresponding to the second subcarrier number according to the second subcarrier number, and sends a subcarrier data response message to the first device, where the subcarrier data response message includes Data of the subcarrier corresponding to the second subcarrier number.

In a third aspect, an embodiment of the present application provides a first device that has a function of implementing the behavior of the first device in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. Optionally, the first device may be an access point.

In a fourth aspect, an embodiment of the present application provides a second device that has a function of implementing the behavior of the second device in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. Optionally, the second device may be an access point.

In a fifth aspect, an embodiment of the present application provides another first device, and the structure of the first device includes a processor and a transceiver. The processor is configured to support the first device to perform the corresponding function in the above method. The transceiver is used to support the first device to send and receive data, information, or instructions involved in the foregoing method to the second device. In a possible design, the structure of the first device may further include a memory, and the memory is coupled with the processor and is configured to store necessary program instructions and data of the first device.

In a sixth aspect, an embodiment of the present application provides another second device, and the structure of the second device includes a processor and a transceiver. The processor is configured to support the second device to perform the corresponding function in the above method. The transceiver is used to support the second device to transmit and receive the data and/or information involved in the foregoing method. In a possible design, the structure of the second device may further include a memory, and the memory is coupled with the processor, and is configured to store necessary program instructions and data of the second device.

In a seventh aspect, an embodiment of the present application provides a communication system, which includes the first device and the second device described in the foregoing aspect.

In an eighth aspect, the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes the computer to execute the methods described in the foregoing aspects.

In a ninth aspect, this application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the methods described in the above aspects.

In a tenth aspect, the present application provides a chip system including a processor for supporting a first device to implement the functions involved in the above aspects. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the first device. The chip system can be composed of chips, or include chips and other discrete devices.

The present application provides a chip system. The chip system includes a processor for supporting a second device to implement the functions involved in the foregoing aspects. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the second device. The chip system can be composed of chips, or include chips and other discrete devices.

In the joint decoding method and related devices provided by the embodiments of the present application, the first device obtains the subcarrier quality information of at least one second device, obtains the subcarrier data of the at least one second device based on the subcarrier quality information, and then The acquired subcarrier data is jointly decoded. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the high-quality sub-carriers of the second device for joint decoding based on the quality information of the sub-carriers of the second device. When the equipment uses a higher MCS to receive data, it can improve the decoding accuracy.

Description of the drawings

FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application;

Figure 2 is a schematic diagram of another application scenario provided by an embodiment of the application;

FIG. 3 is a schematic flowchart of a joint decoding method provided by an embodiment of this application;

FIG. 4 is a schematic flowchart of a joint decoding method provided by an embodiment of this application;

Figure 5 is a flow chart of subcarrier quality information exchange provided by an embodiment of the present application;

FIG. 6 is a flow chart of subcarrier data exchange provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a logical structure of a first device provided by an embodiment of this application;

FIG. 8 is a schematic diagram of a logical structure of a second device provided by an embodiment of this application;

FIG. 9 is a schematic diagram of the hardware structure of a device provided by an embodiment of the application.

detailed description

The embodiments of the present application will be described in detail below in conjunction with the drawings.

The technical solutions provided by the embodiments of the present application can be applied to distributed MIMO wireless communication scenarios. Compared with traditional MIMO technology, the multiple antennas of the transmitter are concentrated on one device, and different devices work independently; the transmitters of distributed MIMO (or network MIMO) are located in different geographic locations. And these transmitters can work together and manage, and then on the receiver side can be regarded as transmitters in different locations to work like a device.

Each distributed MIMO access point (Access Point, AP) includes at least one antenna, and each mobile station (Station, STA) includes at least one antenna. The distance between each AP in distributed MIMO is not limited in this application, and it can be 1 meter, 10 meters, hundreds of meters, several kilometers, etc. APs in distributed MIMO can be connected via wired (Ethernet cable, optical fiber), and these devices can be connected directly or through a switch. Application scenario 1 as shown in Figure 1: Wired connection between each AP and the switch or the backhaul network (Backhaul) where the switch is located, where the first AP in each embodiment of the present application may be one of the distributed MIMO APs . In another application scenario, each AP can also be connected wirelessly. As shown in Figure 2, application scenario 2: wirelessly connect each AP to Backhaul, where the first AP in each embodiment of the application can be distributed One of MIMO AP. In these two application scenarios, the first AP is used to send and receive data to other APs in distributed MIMO.

It should be pointed out that in each embodiment of this application, the AP can be the access point for mobile users to enter the wired network. It is mainly deployed in homes, buildings and parks. The typical coverage radius is from tens of meters to hundreds of meters. Can be deployed outdoors. AP is equivalent to a bridge connecting wired network and wireless network, its main function is to connect each STA together, and then connect the wireless network to the wired network. Specifically, the AP may be a terminal device or a network device with a wireless fidelity (Wireless Fidelity, WiFi for short) chip, such as a smart phone that provides AP functions or services. Optionally, the AP may be a device supporting the 802.11ax standard, and further optionally, the AP may be a device supporting multiple WLAN standards such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

The STA can be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example: mobile phones that support WiFi communication, tablets that support WiFi communication, set-top boxes that support WiFi communication, smart TVs that support WiFi communication, smart wearable devices that support WiFi communication, and in-vehicle communication that supports WiFi communication Equipment and computers that support WiFi communication. Optionally, the site may support the 802.11ax standard, and further optionally, the site supports multiple WLAN standards such as 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

In the WLAN system 802.11ax that introduces Orthogonal Frequency Division Multiple Access (OFDMA) technology, APs can perform uplink and downlink transmissions to different STAs on different time-frequency resources. APs can use different modes for uplink and downlink transmission, such as OFDMA SU-MIMO mode, or OFDMA MU-MIMO mode.

The following explains some terms in the embodiments of the present application.

Sub-carrier: Sub-carrier refers to the channel used by the sending device (source) to send data to the receiving device. In wireless communication technology, 20Mhz spectrum resources can be divided into multiple subcarriers. For example, in 802.11n, 20Mhz spectrum resources are divided into 64 subcarriers, and in 802.11ax, 20Mhz spectrum resources are divided into 256 subcarriers.

Subcarrier quality information: The subcarrier quality information refers to the quality information of the subcarrier (channel) used by the sending device (source) to send data to the receiving device.

Sub-carrier data: Sub-carrier data refers to the data transmitted on the sub-carrier used by the sending device (source) to send data to the receiving device.

Joint decoding: For the same source, the source uses the same subcarrier to send data to the primary receiving device and at least one secondary receiving device, and the primary receiving device obtains the data on the subcarrier of at least one secondary receiving device. And combined with the data on its own sub-carrier to decode. For example, the source sends data to the primary receiving device and an auxiliary receiving device through subcarrier waves numbered 0-9, the primary receiving device obtains the data on the subcarriers numbered 5-9 by the secondary receiving device, and the primary receiving device combines itself The data on the subcarriers numbered 0-4 and the acquired data on the subcarriers numbered 5-9 are decoded.

In the technical solution provided by the embodiments of the present application, the first device obtains the subcarrier data of at least one second device, and combines its own subcarrier data with the obtained subcarrier data of at least one second device for decoding. In this case, when the first device uses a higher MCS for data transmission, the correct rate of decoding can be improved. It is understandable that before performing joint decoding, the first device needs to be determined. In a possible implementation manner, the first device can be determined by the controller shown in FIG. 1, and the specific implementation process is as follows:

The controller queries the received signal quality of each receiving device. For example, the controller obtains the received signal quality of each receiving device by sending a signal quality query message to each receiving device. The signal quality query message may include message type information, signal quality type information, and source identification information, where the message type information is used to indicate that the message sent by the controller is a signal quality query message, and the signal quality type information is used to indicate that the receiving device needs feedback The type of signal quality (such as signal strength or CSI), and the source identification information is used to indicate which source (such as a sending device) the signal quality that the receiving device needs to feedback comes from. After acquiring the received signal quality of each receiving device, the controller determines the first device based on the received signal quality of each receiving device, for example, determines the receiving device with the best received signal quality as the first device. Alternatively, the first device may also be determined according to the link load of the receiving device and the processor processing load. For example, the receiving device with the best received signal quality, the smallest link load, and the smallest processor processing load is determined as the first device.

Take the communication system shown in FIG. 1 as an example, where the controller is the controller in FIG. 1, the receiving device is the AP (that is, AP1 to APn) in FIG. 1, and the source is STA1 in FIG. The controller sends a signal quality query message to AP1, AP2,..., APn, the signal quality query message includes message type information (ie, signal quality query message identification), signal quality type information (such as signal strength identification), and source identification Information (such as the ID of STA1). Optionally, the signal quality query message may include a message identifier, and the message identifier is used to indicate which signal quality query message the message is. Optionally, the signal quality query message may also include time information, and the time information is used to indicate the sending time of the message. The signal quality query message can be used to distinguish which signal quality query message is. AP1, AP2, ..., APn respectively receive signal quality query messages, and based on the above information in the signal quality query message, respectively send received signal quality report messages to the controller. Exemplarily, AP1, AP2,..., APn respectively query the local signal quality record table according to the source identifier (such as the ID of the STA), the record table records the signal quality of the source, and then constructs the received signal based on the respective signal quality The quality report message and the received signal quality report message are sent to the controller. After the controller receives the received signal quality report messages sent by AP1, AP2, ..., APn, it may determine the AP with the best received signal quality as the first device of the source STA1.

Further, after determining the first device, the controller sends a first device announcement message to AP1, AP2, ..., APn. The first device announcement message may include message type information, first device identification information, and source identification information, where: The message type information is used to indicate that the message sent by the controller is a first device announcement message, the master device identification information is used to indicate the first device, and the source identification information is used to indicate to which source the first device is directed. After AP1, AP2, ..., APn receive the first device announcement message, they determine whether they are the first device or the second device.

It is understandable that, in the communication system shown in FIG. 1, after the first device determines, the first device needs to obtain the subcarrier data of at least one second device, and combine its own subcarrier data with that of at least one second device. The subcarrier data is jointly decoded. The method of joint decoding by the first device will be described in detail below in conjunction with FIG. 3 and FIG. 4.

FIG. 3 is a schematic flowchart of a joint decoding method 300 provided by an embodiment of the present application. The method 300 may be applied in a distributed MIMO system, and the first device may be a communication system as shown in FIG. 1 or FIG. 2 , Any one AP determined according to the foregoing first device determination method, the method includes:

310. The first device acquires subcarrier quality information of at least one second device, where the subcarrier quality information is quality information of a subcarrier used by the source device to transmit data to the at least one second device.

320. The first device acquires subcarrier data of the at least one second device based on the subcarrier quality information of the at least one second device.

330. The first device performs joint decoding based on its own subcarrier data and the acquired subcarrier data of the at least one second device.

In the joint decoding method provided by the embodiments of the present application, the first device obtains the subcarrier quality information of at least one second device, obtains the subcarrier data of the at least one second device based on the subcarrier quality information, and then combines the subcarrier data of its own subcarrier. The carrier data and the acquired subcarrier data of at least one second device are jointly decoded. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the high-quality subcarrier of the second device and perform joint decoding based on the quality information of the subcarrier of the second device. When a device uses a higher MCS to receive data, the decoding accuracy can be improved.

In this embodiment of the application, before the first device obtains the subcarrier quality information of at least one second device, the first device needs to determine the quality information of its own subcarrier. The subcarrier refers to the source (for example, it may be The STA in FIG. 2) is a subcarrier used when sending data to the first device and at least one second device. Exemplarily, the source is STA1 in FIG. 1, the first device is AP1 in FIG. 1, and the other APs in FIG. 1 are second devices. STA1 can send data to AP1 to APn through 10 subcarriers, and the 10 subcarriers are numbered 0-9 respectively. Before AP1 obtains the subcarrier quality information of at least one other AP, AP1 needs to determine its own 10 subcarrier quality information. In the specific implementation process, AP1 can determine the quality information of the 10 subcarriers in the following ways: AP1 determines the received signal strength of the 10 subcarriers respectively, and when the received signal strength of the subcarrier is not less than the preset threshold, the subcarrier is determined When the received signal strength of the subcarrier is less than the preset threshold, it is determined that the quality of the subcarrier is poor. AP1 records the numbers of the subcarriers with good subcarrier quality and the numbers of the subcarriers with poor subcarrier quality. For example, among the above 10 subcarriers, subcarriers with subcarrier numbers 0-4 have good quality, and subcarriers with subcarrier numbers 5-9 have poor quality.

After the first device determines its own subcarrier quality information, it acquires the subcarrier quality information of at least one second device.

In a possible design, the first device may obtain the subcarrier quality information of the at least one second device in the following manner, that is, the first device sends a subcarrier quality request message to the at least one second device, and the subcarrier quality request message The subcarrier number information is included, and the subcarrier quality request message is used to instruct the at least one second device to feed back the subcarrier quality information corresponding to the subcarrier number information to the first device.

The first device receives the subcarrier quality information corresponding to the subcarrier number information fed back by the at least one second device.

In a specific implementation process, the first device determines the subcarrier quality information that needs to be acquired based on its own subcarrier quality information, that is, determines the number of the subcarrier that needs to acquire the quality information. Taking the first device as AP1 in Figure 1 and at least one second device as AP2 and AP3 in Figure 1 as an example, AP1 determines that the subcarriers numbered 5-9 among its 10 subcarriers have poor quality, and therefore need to obtain AP2. And AP3's numbered 5-9 subcarrier quality information. As shown in Figure 5, AP1 sends a subcarrier quality request message to AP2 and AP3, and the subcarrier quality request message includes subcarrier numbers 5-9. After AP2 and AP3 receive the subcarrier quality request message, they feed back the quality information of the subcarriers with subcarrier numbers 5-9 to AP1, respectively.

Optionally, the aforementioned subcarrier quality request message may also include subcarrier quality indication information, and the subcarrier quality indication information is used to instruct at least one second device to feed back to the first device quality information of subcarriers that meet the requirements of the subcarrier quality indication information . In this way, only subcarrier quality information that meets the subcarrier quality requirements needs to be fed back to the first device, which can reduce the amount of quality information received by the first device and improve the processing efficiency of the first device.

For example, the above subcarrier quality indicator information may be a received signal strength value, for example, the signal strength value of the subcarrier is defined as 1-5, and the above subcarrier quality indicator information may be 3, that is, the received signal strength value on the subcarrier. When it is not less than 3, the quality information of the subcarrier needs to be fed back to the first device.

Optionally, the foregoing subcarrier quality request message may further include message type information, and the message type information is used to indicate that the message sent by the first device is a subcarrier quality request message.

Optionally, the foregoing subcarrier quality request message may further include a message identifier, and the message identifier is used to distinguish which subcarrier quality request message the subcarrier quality request message is.

In a possible design, the first device may obtain the subcarrier quality information of the at least one second device in the following manner, that is, the first device receives the subcarrier quality information of the at least one second device fed back by the third device. In this case, the first device may obtain the subcarrier quality information of the at least one second device through other devices. In a specific implementation process, the third device may be a controller, and the controller collects subcarrier quality information of each second device, and then feeds back the subcarrier quality information of each second device to the first device. In this way, the first device does not need to send the subcarrier quality request message, which simplifies the processing procedure of the first device.

In a possible design, the first device may obtain the subcarrier data of the at least one second device based on the subcarrier quality information of the at least one second device in the following manner, that is, the first device sends the subcarrier to the at least one second device A data request message. The subcarrier data request message includes subcarrier number information, and the subcarrier data request message is used to instruct the at least one second device to feed back the subcarrier data corresponding to the subcarrier number information to the first device.

The first device receives the subcarrier data corresponding to the subcarrier number fed back by the at least one second device. Wherein, subcarrier data refers to data sent by a source to the first device and at least one second device through the subcarrier. For example, if the source sends data to the first device and at least one second device through the subcarrier numbers 0-9, the subcarrier data corresponding to the subcarrier numbers 0-9 are respectively transmitted on the subcarriers 0-9.

For example, the first device may determine the subcarrier number of the subcarrier data to be acquired based on the subcarrier quality information of the at least one second device, and then send the subcarrier data including the subcarrier number information to the at least one second device A request message. After receiving the subcarrier data request message, the second device sends the subcarrier data corresponding to the subcarrier number to the first device. Similarly, taking the first device as AP1 in Figure 1 and at least one second device as AP2 and AP3 in Figure 1 as an example, AP1 determines that the subcarriers numbered 5-9 among its 10 subcarriers have poor quality, and therefore need to be separately Obtain the subcarrier data corresponding to the subcarrier numbers 5-9 of AP2 and AP3. AP1 sends a subcarrier data request message to AP2 and AP3, and the subcarrier data request message includes subcarrier numbers 5-9. After AP2 and AP3 receive the subcarrier data request message, they feed back subcarrier data corresponding to subcarrier numbers 5-9 to AP1, respectively.

Optionally, the aforementioned subcarrier data request message further includes a device identifier, and the device identifier is used to indicate a second device that needs to feed back subcarrier data to the first device. In this case, the first device determines the second device that needs to feed back subcarrier data based on the subcarrier quality information of the at least one second device. Exemplarily, the first device may compare the acquired subcarrier quality information of at least one second device, and select the second device with better subcarrier quality to feed back the subcarrier data. In this way, the amount of data received by the first device can be reduced, and the data processing efficiency of the first device can be improved.

In a possible design, the first device may also obtain subcarrier data based on the subcarrier quality information of the at least one second device in the following manner, that is, the first device sends a subcarrier data request message to the at least one second device respectively The subcarrier data request message includes subcarrier number information and device identification information. The subcarrier number information is used to indicate which subcarrier data needs to be fed back, and the device identification information is used to indicate a second device that needs to feed back subcarrier data.

The first device respectively receives the subcarrier data corresponding to the subcarrier number information sent by the at least one second device.

For example, the first device determines, based on the subcarrier quality information of at least one device, the number of the subcarrier for which each second device needs to feed back subcarrier data, and respectively sends information including the subcarrier number and the device identifier to at least one second device The subcarrier data request message of the information. After each second device receives the subcarrier data request message sent to itself by the first device, it feeds back the subcarrier data corresponding to the subcarrier number to the first device. It is understandable that for each second device's subcarrier data request message, the subcarrier numbers included therein can be different, and the first device can select the subcarrier quality information of each second device based on the subcarrier quality information of each second device. The data of the feedback subcarrier. For example, the first device is AP1 in FIG. 1, and the above-mentioned at least one second device is AP2 and AP3 in FIG. 1. Among the subcarrier quality information fed back by AP2 to AP1, subcarriers with subcarrier numbers 5-7 have better quality Well, in the subcarrier quality information that AP3 feeds back to AP1, the subcarriers with subcarrier numbers 8-9 have better quality, so AP1 can choose AP2 to feed back data on subcarriers with subcarrier numbers 5-7, and AP1 chooses AP3 Feed back the data on the subcarriers with subcarrier numbers 8-9. As shown in Figure 6, AP1 sends subcarrier data request messages to AP2 and AP3 respectively. The subcarrier data request messages sent by AP1 to AP2 include subcarrier number 5 -7, the subcarrier data request message sent by AP1 to AP3 includes subcarrier numbers 8-9. In this case, the data received by the first device can be further reduced, and the data processing efficiency of the first device can be improved.

Optionally, before the first device separately sends the subcarrier data request message to the at least one second device, the first device may also determine, based on the subcarrier quality information of the at least one second device, that at least the subcarrier data needs to be fed back Which subcarriers are fed back by a second device and the at least one second device respectively.

FIG. 4 is a schematic flowchart of a joint decoding method 400 provided by an embodiment of the present application. The second device may be any AP other than the first device in the system of FIG. 1 or FIG. 2. The method includes:

410. The second device receives a subcarrier quality request message sent by the first device, where the subcarrier quality request message includes first subcarrier number information, and the subcarrier quality request message is used to instruct the second device to send The first device feeds back the quality information of the subcarrier corresponding to the first subcarrier number information, where the subcarrier quality information is the quality information of the subcarrier used by the source device to transmit data to the at least one second device.

420. The second device sends the quality information of the subcarrier corresponding to the first subcarrier number to the first device.

430. The second device receives a subcarrier data request message sent by the first device, where the subcarrier data request message includes second subcarrier number information, and the subcarrier data request message is used to instruct the second The device feeds back the data of the subcarrier corresponding to the second subcarrier number to the first device.

440. The second device sends data of the subcarrier corresponding to the second subcarrier number to the first device, where the data of the subcarrier is used by the first device for joint decoding.

In the method provided by the embodiment of the present application, the second device feeds back the subcarrier quality information to the first device by receiving the subcarrier quality request message, and then receives the subcarrier data request message determined based on the subcarrier quality information sent by the first device, And the corresponding subcarrier data is fed back to the first device, so that the first device can perform joint decoding. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the high-quality subcarriers of the second device and perform joint decoding based on the quality information of the subcarriers of the second device. When a device uses a higher MCS to receive data, the decoding accuracy can be improved.

In the embodiment of the present application, the second device receives the subcarrier quality request message sent by the first device, and may feed back the first subcarrier to the first device according to the first subcarrier number information included in the subcarrier quality request message Quality information of the subcarrier corresponding to the number information.

In a possible design, the second device determines the quality information of the subcarrier corresponding to the first subcarrier number information according to the first subcarrier number information, and sends the subcarrier quality response message to the first device. The quality information of the subcarrier corresponding to the first subcarrier number is included.

For example, after receiving the subcarrier quality request message, the second device may parse the first subcarrier number information from the subcarrier quality request message, for example, the subcarrier number information is subcarrier numbers 5-9. The second device may look up the quality information of subcarriers No. 5-9 from the local subcarrier quality information record table. It can be understood that the local subcarrier quality information record table may include the following information: source information or time information, subcarrier number information, and subcarrier quality information. Among them, the sub-carrier quality information can be expressed in numerical values or numerical intervals. After obtaining the quality information of subcarriers No. 5-9, the second device encapsulates the quality information of subcarriers No. 5-9 in a subcarrier quality response message, and sends the subcarrier quality response message to the first device.

In this way, the interaction of subcarrier quality information between the second device and the first device is completed, and the first device can send a subcarrier data request to the second device based on the received subcarrier quality information of at least one second device news.

In the embodiment of the present application, after the second device sends the subcarrier quality information to the first device, the second device receives the subcarrier data request message sent by the first device, and the second device may use the subcarrier data request message included in the subcarrier data request message. The second subcarrier number information, and the subcarrier data corresponding to the second subcarrier number information is fed back to the first device.

In a possible design, the second device determines the subcarrier data corresponding to the second subcarrier number information according to the second subcarrier number information, and sends a subcarrier data response message to the first device, and the subcarrier data response message includes the first The subcarrier data corresponding to the two subcarrier number information.

It should be pointed out that the first subcarrier number information and the second subcarrier number information may be the same or different, depending on the decision of the first device.

For example, after receiving the subcarrier data request message, the second device may parse the subcarrier data request message to obtain the second subcarrier number information, for example, the subcarrier number information is subcarrier number 7-9. The second device can look up the data information of the 7-9 subcarrier from the local subcarrier data information record table. It is understandable that the local subcarrier data information record table may include the following information: source information or time information, subcarrier number information, and subcarrier data information. After obtaining the subcarrier data information of No. 7-9, the second device encapsulates the subcarrier data information in a subcarrier data response message, and sends the subcarrier data response message to the first device.

FIG. 7 is a schematic diagram of a logical structure of a first device 700 provided by an embodiment of the present application. As shown in FIG. 7, the first device 700 includes an acquiring unit 710 and a joint decoding unit 720.

The obtaining unit 710 is configured to obtain subcarrier quality information of at least one second device, where the subcarrier quality information is quality information of a subcarrier used by the source device to transmit data to the at least one second device;

The obtaining unit 710 is further configured to obtain subcarrier data of the at least one second device based on the subcarrier quality information of the at least one second device;

The joint decoding unit 720 is configured to perform joint decoding based on its own subcarrier data and the acquired subcarrier data of the at least one second device.

The first device provided in the embodiment of the present application obtains the subcarrier quality information of at least one second device, obtains the subcarrier data of the at least one second device based on the subcarrier quality information, and then combines the obtained subcarrier data Decoding. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the high-quality sub-carriers of the second device for joint decoding based on the quality information of the sub-carriers of the second device. When the equipment uses a higher MCS to receive data, it can improve the decoding accuracy.

In a possible design, the acquiring unit 710 is specifically configured to:

Send a subcarrier quality request message to at least one second device, the subcarrier quality request message includes subcarrier number information, and the subcarrier quality request message is used to instruct at least one second device to feed back the subcarrier corresponding to the subcarrier number information to the first device Quality information.

Receiving subcarrier quality information corresponding to the subcarrier number information fed back by at least one second device.

Optionally, the subcarrier quality request message includes subcarrier quality indication information.

In a possible design, the obtaining unit 710 is specifically configured to:

Receive subcarrier quality information of at least one second device fed back by the third device.

In a possible design, the obtaining unit 710 is specifically configured to:

Send a subcarrier data request message to at least one second device, the subcarrier data request message includes subcarrier number information, and the subcarrier data request message is used to instruct at least one second device to feed back the subcarrier corresponding to the subcarrier number information to the first device data;

Receiving subcarrier data corresponding to the subcarrier number information sent by at least one second device.

Optionally, the subcarrier data request message includes device identification information, and the device identification information is used to indicate a second device that needs to feed back subcarrier data.

Optionally, the first device 700 further includes a determining unit 730, and the determining unit 730 is configured to:

Before sending the subcarrier data request message to at least one second device, determine at least one second device that needs to feed back subcarrier data based on the subcarrier quality information of the at least one second device.

It should be pointed out that the first device 700 is used to execute the above method 300, and its related technical features have been described in detail in the above method 300, such as but not limited to, and will not be repeated here.

FIG. 8 is a schematic diagram of a logical structure of a second device 800 provided by an embodiment of the present application. As shown in FIG. 8, the second device 800 includes a receiving unit 810 and a sending unit 820.

The receiving unit 810 is configured to receive a subcarrier quality request message sent by a first device, where the subcarrier quality request message includes first subcarrier number information, and the subcarrier quality request message is used to instruct the second device to send a The first device feeds back the quality information of the subcarrier corresponding to the first subcarrier number information, where the subcarrier quality information is the quality information of the subcarrier used by the source device to transmit data to the at least one second device;

The sending unit 820 is configured to send quality information of the subcarrier corresponding to the first subcarrier number;

The receiving unit 810 is further configured to receive a subcarrier data request message sent by the first device, where the subcarrier data request message includes second subcarrier number information, and the subcarrier data request message is used to instruct the The second device feeds back the data of the subcarrier corresponding to the second subcarrier number to the first device;

The sending unit 820 is further configured to send data of the subcarrier corresponding to the second subcarrier number to the first device, where the data of the subcarrier is used by the first device for joint decoding.

The second device provided in this embodiment of the present application feeds back the subcarrier quality information to the first device by receiving the subcarrier quality request message, and then receives the subcarrier data request message determined based on the subcarrier quality information sent by the first device, and The corresponding subcarrier data is fed back to the first device to facilitate joint decoding by the first device. In the prior art, due to the influence of the weakening of the sub-carrier, if a higher MCS is used when the sub-carrier transmits data, the decoding accuracy will be reduced. Compared with the prior art, the first device in the embodiment of the present application can obtain the data transmitted on the high-quality subcarriers of the second device and perform joint decoding based on the quality information of the subcarriers of the second device. When a device uses a higher MCS to receive data, the decoding accuracy can be improved.

In a possible design, the second device 800 further includes a determining unit 830 configured to determine the quality information of the subcarrier corresponding to the first subcarrier number according to the first subcarrier number;

The sending unit 820 is configured to send a subcarrier quality response message to the first device, where the subcarrier quality response message includes quality information of the subcarrier corresponding to the first subcarrier number.

In a possible design, the second device further includes a determining unit 830 configured to determine data of a subcarrier corresponding to the second subcarrier number according to the second subcarrier number;

The sending unit 820 is configured to send a subcarrier data response message to the first device, where the subcarrier data response message includes data of the subcarrier corresponding to the second subcarrier number.

It should be pointed out that the second device 800 is used to execute the above method 400, and the related technical features involved have been described in detail in the above method 400, for example but not limited to, and will not be repeated here.

FIG. 9 is a schematic diagram of the hardware structure of a device 900 provided by an embodiment of the present application. As shown in FIG. 9, the device 900 includes a processor 902, a transceiver 904, a plurality of antennas 906, a memory 908, an I/O (Input/Output) interface 910, and a bus 912. The transceiver 904 further includes a transmitter 9042 and a receiver 9044, and the memory 908 is further used to store instructions 9082 and data 9084. In addition, the processor 902, the transceiver 904, the memory 908, and the I/O interface 99 are communicatively connected to each other through the bus 912, and multiple antennas 906 are connected to the transceiver 904.

The processor 902 may be a general-purpose processor, such as but not limited to a central processing unit (CPU), or a dedicated processor, such as but not limited to a digital signal processor (DSP), application Application Specific Integrated Circuit (ASIC) and Field Programmable Gate Array (FPGA), etc. In addition, the processor 902 may also be a combination of multiple processors. The transceiver 904 includes a transmitter 9042 and a receiver 9044, where the transmitter 9042 is configured to transmit a signal through at least one antenna among the plurality of antennas 906. The receiver 9044 is used to receive signals through at least one antenna among the plurality of antennas 906.

The memory 908 may be various types of storage media, such as random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), non-volatile RAM (Non-Volatile RAM, NVRAM), and Programmable ROM (Programmable ROM, PROM), erasable PROM (Erasable PROM, EPROM), electrically erasable PROM (Electrically Erasable PROM, EEPROM), flash memory, optical memory, registers, etc. The memory 908 is specifically used to store instructions 9082 and data 9084. The processor 902 can execute the above-mentioned steps and/or operations by reading and executing the instructions 9082 stored in the memory 908. When performing the above-mentioned steps and/or operations Data 9084 may be used in the process.

The I/O interface 910 is used to receive instructions and/or data from peripheral devices, and output instructions and/or data to the peripheral devices.

In a possible design, the device 900 may be the first device in the embodiment of the present application. In this case, the processor 902 can be used to execute, for example, step 310, step 320, and step 330 in FIG. 3 and executed by the acquisition unit 710 and the joint decoding unit 720 in the first device 700 shown in FIG. Operation. The processor 902 may be a processor specifically designed to perform the foregoing steps and/or operations, or a processor that performs the foregoing steps and/or operations by reading and executing instructions 9082 stored in the memory 908. The processor 902 Data 9084 may be used in the process of performing the above steps and/or operations.

In a possible design, the device 900 may be the second device in the embodiment of the present application. In this case, the transmitter 9042 may be specifically used to perform transmission through at least one antenna among the multiple antennas 906, for example, step 420 and step 440 in FIG. 4 and the second device 800 shown in FIG. Operation performed by unit 820. The receiver 9044 is used to receive signals through at least one antenna among the plurality of antennas 906. In particular, in the technical solution provided by the embodiment of the present application, the receiver 9044 may be specifically used to perform at least one antenna among the multiple antennas 906, for example, steps 410 and 430 in FIG. 4 and steps shown in FIG. 8 The operations performed by the receiving unit 810 in the second device 800 are shown.

It should be noted that in a specific implementation process, the device 900 may also include other hardware devices, which will not be listed here.

An embodiment of the present application also provides a communication system, which includes the first device and the second device described in the foregoing aspect.

The present application also provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause the computer to execute the methods described in the above aspects.

The present application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the methods described in the above aspects.

The present application provides a chip system. The chip system includes a processor for supporting a first device to implement the functions involved in the foregoing aspects. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the first device. The chip system can be composed of chips, or include chips and other discrete devices.

The present application provides a chip system. The chip system includes a processor for supporting a second device to implement the functions involved in the foregoing aspects. In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the second device. The chip system can be composed of chips, or include chips and other discrete devices. It should be noted that, in the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can 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 dedicated 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, 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 stored by a computer or a data storage device such as a server or 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, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, but not necessarily 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 described herein can be implemented in an order other than the content 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 the 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.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, a person of ordinary skill in the art should understand that: The technical solutions recorded in the embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A joint decoding method, characterized in that the method includes:

The first device acquires subcarrier quality information of at least one second device, where the subcarrier quality information is quality information of a subcarrier used by the source device to transmit data to the at least one second device;

Acquiring, by the first device, the subcarrier data of the at least one second device based on the subcarrier quality information of the at least one second device;

The first device performs joint decoding based on its own subcarrier data and the acquired subcarrier data of the at least one second device.
The method according to claim 1, wherein the first device acquiring subcarrier quality information of at least one second device comprises:

The first device sends a subcarrier quality request message to the at least one second device, where the subcarrier quality request message includes subcarrier number information, and the subcarrier quality request message is used to instruct the at least one second device Feeding back the subcarrier quality information corresponding to the subcarrier number information to the first device;

Receiving subcarrier quality information corresponding to the subcarrier number information fed back by the at least one second device.
The method according to claim 2, wherein the sub-carrier quality request message includes sub-carrier quality indication information.
The method according to claim 1, wherein the first device acquiring subcarrier quality information of at least one second device comprises:

The first device receives the subcarrier quality information of the at least one second device fed back by the third device.
The method according to claim 1, wherein the first device acquiring subcarrier data based on the subcarrier quality information of the at least one second device comprises:

The first device sends a subcarrier data request message to the at least one second device, where the subcarrier data request message includes subcarrier number information, and the subcarrier data request message is used to instruct the at least one second device Feeding back the subcarrier data corresponding to the subcarrier number information to the first device;

Receiving subcarrier data corresponding to the subcarrier number information sent by the at least one second device.
The method according to claim 5, wherein the subcarrier data request message includes device identification information, and the device identification information is used to indicate a second device that needs to feed back subcarrier data.
The method according to claim 5 or 6, wherein before the first device sends a subcarrier data request message to the at least one second device, the method further comprises:

The first device determines at least one second device that needs to feed back subcarrier data based on the subcarrier quality information of the at least one second device.
A joint decoding method, characterized in that the method includes:

The second device receives a subcarrier quality request message sent by the first device, where the subcarrier quality request message includes first subcarrier number information, and the subcarrier quality request message is used to instruct the second device to send the first The device feeds back the quality information of the subcarrier corresponding to the first subcarrier number information, where the subcarrier quality information is the quality information of the subcarrier used by the source device to transmit data to the at least one second device;

Sending, by the second device, the quality information of the subcarrier corresponding to the first subcarrier number to the first device;

The second device receives a subcarrier data request message sent by the first device, where the subcarrier data request message includes second subcarrier number information, and the subcarrier data request message is used to instruct the second device to send Feeding back data of the subcarrier corresponding to the second subcarrier number by the first device;

The second device sends data of the subcarrier corresponding to the second subcarrier number to the first device, where the data of the subcarrier is used by the first device for joint decoding.
The method according to claim 8, wherein the sending, by the second device, to the first device the quality information of the subcarrier corresponding to the first subcarrier number comprises:

The second device determines the quality information of the subcarrier corresponding to the first subcarrier number according to the first subcarrier number, and sends a subcarrier quality response message to the first device, the subcarrier quality response message The quality information of the subcarrier corresponding to the first subcarrier number is included.
The method according to claim 8, wherein the sending, by the second device, the data of the subcarrier corresponding to the second subcarrier number to the first device comprises:

The second device determines the data of the subcarrier corresponding to the second subcarrier number according to the second subcarrier number, and sends a subcarrier data response message to the first device, where the subcarrier data response message includes Data of the subcarrier corresponding to the second subcarrier number.
A first device, characterized in that the device includes:

An obtaining unit, configured to obtain subcarrier quality information of at least one second device, where the subcarrier quality information is quality information of a subcarrier used by the source device to transmit data to the at least one second device;

The acquiring unit is further configured to acquire subcarrier data of the at least one second device based on the subcarrier quality information of the at least one second device;

The joint decoding unit is configured to perform joint decoding based on its own subcarrier data and the acquired subcarrier data of the at least one second device.
The device according to claim 11, wherein the acquiring unit is specifically configured to:

Send a subcarrier quality request message to the at least one second device, where the subcarrier quality request message includes subcarrier number information, and the subcarrier quality request message is used to instruct the at least one second device to send The device feeds back subcarrier quality information corresponding to the subcarrier number information.

Receiving subcarrier quality information corresponding to the subcarrier number information fed back by the at least one second device.
The device according to claim 12, wherein the subcarrier quality request message includes subcarrier quality indication information.
The device according to claim 11, wherein the acquiring unit is specifically configured to:

Receiving the subcarrier quality information of the at least one second device fed back by the third device.
The device according to claim 11, wherein the acquiring unit is specifically configured to:

Send a subcarrier data request message to the at least one second device, where the subcarrier data request message includes subcarrier number information, and the subcarrier data request message is used to instruct the at least one second device to send a request to the first The device feeds back the subcarrier data corresponding to the subcarrier number information;

Receiving subcarrier data corresponding to the subcarrier number information sent by the at least one second device.
The device according to claim 15, wherein the subcarrier data request message includes device identification information, and the device identification information is used to indicate a second device that needs to feed back subcarrier data.
The device according to claim 15 or 16, wherein the device further comprises a determining unit, and the determining unit is configured to:

Before sending the subcarrier data request message to the at least one second device, determine at least one second device that needs to feed back subcarrier data based on the subcarrier quality information of the at least one second device.
A second device, characterized in that the device includes:

The receiving unit is configured to receive a subcarrier quality request message sent by a first device, where the subcarrier quality request message includes first subcarrier number information, and the subcarrier quality request message is used to instruct the second device to send The first device feeds back the quality information of the subcarrier corresponding to the first subcarrier number information, where the subcarrier quality information is the quality information of the subcarrier used by the source device to transmit data to the at least one second device;

A sending unit, configured to send quality information of the subcarrier corresponding to the first subcarrier number;

The receiving unit is further configured to receive a subcarrier data request message sent by the first device, where the subcarrier data request message includes second subcarrier number information, and the subcarrier data request message is used to indicate the second The second device feeds back the data of the subcarrier corresponding to the second subcarrier number to the first device;

The sending unit is further configured to send data of the subcarrier corresponding to the second subcarrier number to the first device, where the data of the subcarrier is used by the first device for joint decoding.
The device according to claim 18, wherein the device further comprises a determining unit configured to determine, according to the first subcarrier number, the subcarrier number corresponding to the first subcarrier number Quality information

The sending unit is configured to send a subcarrier quality response message to the first device, where the subcarrier quality response message includes quality information of the subcarrier corresponding to the first subcarrier number.
The device according to claim 18, wherein the device further comprises a determining unit configured to determine, according to the second subcarrier number, the subcarrier number corresponding to the second subcarrier number data;

The sending unit is configured to send a subcarrier data response message to the first device, where the subcarrier data response message includes data of the subcarrier corresponding to the second subcarrier number.
A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which when running on a computer, causes the computer to execute the method according to any one of claims 1 to 7 .
A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when it is run on a computer, the computer can execute the method according to any one of claims 8 to 10 .
The present application provides a chip system, which includes at least one processor and an interface, for implementing the method according to any one of claims 1 to 7.
A chip system according to claim 23, wherein the chip system further comprises a memory, and the memory is configured to store computer program data for implementing the method according to any one of claims 1 to 7 .
A computer program product, wherein when the computer program product runs on a computer, the computer executes the method according to any one of claims 1 to 7.
A computer program product, wherein when the computer program product runs on a computer, the computer executes the method according to any one of claims 8 to 10.
The present application provides a chip system, which includes at least one processor and an interface, for implementing the method according to any one of claims 8 to 10.
A chip system according to claim 27, wherein the chip system further comprises a memory, and the memory is configured to store computer program data for implementing the method according to any one of claims 8 to 10 .