CN113472496A

CN113472496A - Multi-channel processing method and related equipment

Info

Publication number: CN113472496A
Application number: CN202010249572.9A
Authority: CN
Inventors: 赵望生
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-10-01
Anticipated expiration: 2040-03-31
Also published as: CN113472496B; WO2021197325A1

Abstract

The embodiment of the application provides a multi-channel processing method and related equipment, the method comprises the steps that an Access Point (AP) generates a first message, the first message comprises a first lead code and a second lead code, the first lead code comprises first bandwidth information, the first bandwidth information is configured according to the bandwidth of a first channel occupied by a first group of Stations (STA), the second lead code comprises second bandwidth information, and the second bandwidth information is configured according to the bandwidth of a second channel occupied by a second group of Stations (STA); the AP sends a first message to the first group of STAs and the second group of STAs, the first message comprises first data and second data, and the AP receives a first response frame from the first group of STAs and a second response frame from the second group of STAs.

Description

Multi-channel processing method and related equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a multi-channel processing method and related devices.

Background

With the continuous development of business applications, the requirements on the network are higher and higher. In order to meet the requirements of service development, the wireless internet WiFi technology is also gradually evolving to support higher and higher rates. However, when the bandwidth supported by the station is lower than the bandwidth capability supported by the access point, the data transmission can be performed only according to the bandwidth capability supported by the station, which causes waste. Therefore, how to fully utilize the channel resources and increase the overall air interface rate is a technical problem being studied by those skilled in the art.

Disclosure of Invention

The embodiment of the application discloses a multi-channel processing method and related equipment, which can make full use of channel resources and improve the overall air interface rate.

A first aspect of the present application discloses a multi-channel processing method, including:

an Access Point (AP) generates a first message, wherein the first message comprises a first lead code and a second lead code, the first lead code comprises first bandwidth information, the first bandwidth information is configured according to the bandwidth of a first channel occupied by a first group of Station (STA), the second lead code comprises second bandwidth information, the second bandwidth information is configured according to the bandwidth of a second channel occupied by a second group of Station (STA), the first channel and the second channel are not intersected, and the sum of the bandwidth of the first channel and the bandwidth of the second channel is less than or equal to the bandwidth supported by the AP;

the AP sends the first message to the first group of STAs and the second group of STAs, the first message comprises first data and second data, the first lead code is used for indicating the first group of STAs to receive the first data by using the first bandwidth information, and the second lead code is used for indicating the second group of STAs to receive the second data by using the second bandwidth information, the first group of STAs comprises at least one STA, and the second group of STAs comprises at least one STA;

the AP receives a first response frame from the first group of STAs and a second response frame from the second group of STAs, wherein the first response frame is used for informing the AP that the first group of STAs have received the first data, and the second response frame is used for informing the AP that the second group of STAs have received the second data.

In the above method, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the downlink direction, the AP may allocate a subcarrier for receiving data to the STA by modifying the preamble, that is, the first message includes the first preamble and the second preamble, the first group of STAs obtains the subcarrier allocated to the first group of STAs by identifying the first preamble and obtains the first data according to the subcarrier, and the second group of STAs obtains the subcarrier allocated to the second group of STAs by identifying the second preamble and obtains the second data according to the subcarrier, the resources of the first channel and the second channel can be fully utilized by a multi-channel processing manner, so that the situation that only one channel is used for negotiation according to the lower bandwidth capability and thus waste is avoided on one side of the AP and the STA, and the occurrence of the situation of the overall air interface rate is reduced, the data are transmitted and received on the first channel and the second channel simultaneously, so that the interference condition caused by asynchronous data transmission and reception is avoided, the AP is informed in time in a mode that the STA sends a response frame to the AP, the STA receives the data, and the resource waste caused by continuous waiting of the AP is avoided.

In one alternative, the first preamble includes first spectrum allocation information for indicating frequency domain resources for the first group of STAs to receive the first data, and the second preamble includes second spectrum allocation information for indicating frequency domain resources for the second group of STAs to receive the second data.

In yet another alternative, the AP determines the traffic flow of the first channel and the traffic flow of the second channel;

when the difference value between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, the AP sends a first notification message to a part of STAs in the first group of STAs, wherein the first notification message is used for indicating the part of STAs in the first group of STAs to be switched from the first channel to the second channel to become the second group of STAs; and when the difference value between the service flow of the second channel and the service flow of the first channel is greater than the first threshold, the AP sends a second notification message to a part of STAs in the second group of STAs, where the second notification message is used to instruct the part of STAs in the second group of STAs to switch from the second channel to the first channel to become the first group of STAs.

In the method, the AP flexibly guides the STA to the first channel or the second channel by predicting the traffic flow of the channels, so that the extreme situation that the load on one channel is very heavy and the load on the other channel is very light can be avoided, the traffic situation on the channels can be comprehensively considered, and the resources can be reasonably utilized.

In yet another alternative, the AP transmits a first management frame on the first channel, the first management frame being used by the first group of STAs to determine a connection status with the AP;

the AP sends a second management frame on the second channel, the second management frame being used by the second group of STAs to determine a connection status with the AP.

In the method, the AP sends the first management frame on the first channel and the second management frame on the second channel, so that the STA can know that the AP is nearby in a mode of monitoring the management frame on the channel and can keep connection with the AP, and data communication is rapidly carried out.

In yet another alternative, the AP transmits a first trigger frame to the first group of STAs on the first channel, where the first trigger frame includes the first spectrum allocation information, where the first spectrum allocation information is used to instruct the first group of STAs to transmit frequency-domain resources of third data to the AP, and the first trigger frame includes a first duration, where the first duration is a time for transmission of the third data on the first channel;

the AP receives third data sent by the first group of STAs on the first channel;

the AP sends a third response frame to the first group of STAs on the first channel, wherein the third response frame is used for informing the first group of STAs that the AP receives the third data;

the AP sending a second trigger frame to the second group of STAs on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to indicate frequency domain resources for the second group of STAs to send fourth data to the AP, the second trigger frame includes a second duration, and the second duration is a time for transmitting the fourth data on the second channel, where the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel;

the AP receives fourth data sent by the second group of STAs on the second channel;

the AP sends a fourth response frame to the second group of STAs on the second channel, the fourth response frame being used to notify the second group of STAs that the AP has received the fourth data.

In the above method, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the uplink direction, the AP informs the STA of the sub-carrier when sending data information to the AP by sending a trigger frame to the STA, the first channel and the second channel resources can be fully utilized by a multi-channel processing mode, the total air interface rate is improved, the condition that only one channel resource is used when negotiation can be carried out only according to low bandwidth capability because the bandwidth capabilities of the AP and the STA are inconsistent is avoided, thereby causing resource waste, and indicating that the transmission time of the data on the first channel and the second channel is the same through the trigger frame, avoiding causing interference, ensuring data quality, and the AP sends a response frame to the STA, so that the STA is informed of the data received by the AP in time, and the resource waste caused by the continuous waiting of the STA is avoided.

In yet another alternative, the AP transmits the first preamble and the first data to the first group of STAs on the first channel and transmits the second preamble and the second data to the second group of STAs on the second channel at the same time, where the transmission time of the first preamble and the first data on the first channel is the same as the transmission time of the second preamble and the second data on the second channel.

A second aspect of the present application discloses a multi-channel processing method, including:

a station STA receives a first message sent by an access point AP, wherein the first message comprises a first lead code and a second lead code;

the station STA identifies a first lead code in the first message or a second lead code in the first message, wherein the first lead code comprises first bandwidth information, the first bandwidth information is configured according to the bandwidth of a first channel occupied by a first group of station STAs, the second lead code comprises second bandwidth information, and the second bandwidth information is configured according to the bandwidth of a second channel occupied by a second group of station STAs;

the station STA receives first data according to the first bandwidth information or receives second data according to the second bandwidth information, the first packet includes the first data and the second data, the first channel and the second channel do not intersect, the sum of the bandwidth of the first channel and the bandwidth of the second channel is less than or equal to the bandwidth supported by the AP, the station STA is a first group of station STAs or a second group of station STAs, the first group of station STAs includes at least one STA, and the second group of station STAs includes at least one STA;

the STA sends a first response frame to the AP on a first channel, wherein the first response frame is used for informing the AP that the STA has received the first data; or the STA sends a second response frame to the AP on a second channel, where the second response frame is used to notify the AP that the STA has received the second data.

In an optional aspect, the first preamble includes first spectrum allocation information indicating frequency domain resources for the first group of STAs to receive first data, and the second preamble includes second spectrum allocation information indicating frequency domain resources for the second group of STAs to receive second data.

In yet another optional scheme, when a difference value between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, a part of the STAs receive a first notification message sent by the AP, where the first notification message is used to instruct the part of the STAs to switch from the first channel to the second channel; or

And when the difference value between the service flow of the second channel and the service flow of the first channel is greater than a first threshold value, receiving a second notification message sent by the AP by a part of the STAs, wherein the second notification message is used for indicating the part of the STAs to be switched from the second channel to the first channel.

In the method, the AP flexibly guides the STA to the first channel or the second channel by predicting the service flow of the channel, so that the extreme condition that the load on one channel is very heavy and the load on the other channel is very light can be avoided, the flow condition on the channels can be comprehensively considered, and the resources are reasonably utilized.

In yet another alternative, the STA receiving the AP on the first channel sends a first management frame, where the first management frame is used for the first group of STAs to determine a connection status with the AP;

and the STA receives a second management frame sent by the AP on the second channel, wherein the second management frame is used for the second group of STAs to determine the connection state with the AP.

In the method, the AP sends the first management frame on the first channel and the second management frame on the second channel, so that the STA can know that the AP is nearby in a mode of monitoring the management frame on the channel, can keep connection with the AP and can quickly carry out data communication.

In yet another alternative, the STA receives, on the first channel, a first trigger frame sent by the AP, where the first trigger frame includes the first spectrum allocation information, the first spectrum allocation information is used to instruct the STA to send frequency domain resources of third data to the AP, and the second trigger frame includes a second duration, where the second duration is a time when the fourth data is transmitted on the second channel;

the STA sends the third data to the AP;

the STA receives a third response frame of the AP, wherein the third response frame is used for informing the STA that the AP receives the third data; or

The STA receives, on the second channel, a second trigger frame sent by the AP, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to indicate a frequency domain resource for the STA to send fourth data to the AP, the second trigger frame includes a second duration, and the second duration is a time when the fourth data is transmitted on the second channel, where the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel;

the STA sends the fourth data to the AP;

the STA receives a fourth response frame of the AP, wherein the fourth response frame is used for informing the STA that the AP has received the fourth data.

In the above method, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the uplink direction, the AP informs the STA of subcarriers when sending data information to the AP by sending a trigger frame to the STA, the resources of the first channel and the second channel can be fully utilized by a multi-channel processing mode, simultaneously transmit and receive data on the first channel and the second channel, avoiding the AP and STA side not supporting high bandwidth capability, only one channel can be used according to the negotiation of lower bandwidth capability, thereby causing waste, reducing the occurrence of the situation of overall air interface rate, and the transmission time of the data on the first channel and the second channel is indicated to be the same through the trigger frame, thereby avoiding causing interference, ensuring the data quality, and the AP sends a response frame to the STA to inform the STA in time that the AP receives the data, thereby avoiding resource waste caused by continuous waiting of the STA.

A third aspect of the present embodiment discloses a multi-channel processing apparatus, including:

the processing unit is configured to generate a first message, where the first message includes a first preamble and a second preamble, the first preamble includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of stations STA, the second preamble includes second bandwidth information, the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of stations STA, the first channel and the second channel are disjoint, and a sum of the bandwidth of the first channel and the bandwidth of the second channel is less than or equal to a bandwidth supported by the AP;

a communication unit, configured to send the first packet to the first group of STAs and the second group of STAs, where the first packet includes first data and second data, the first preamble is used to instruct the first group of STAs to receive the first data using the first bandwidth information, and the second preamble is used to instruct the second group of STAs to receive the second data using the second bandwidth information, where the first group of STAs includes at least one STA, and the second group of STAs includes at least one STA;

the communication unit is configured to receive a first response frame from the first group of STAs and a second response frame from the second group of STAs, where the first response frame is used to notify the first group of STAs that the first data has been received, and the second response frame is used to notify the second group of STAs that the second data has been received.

In the above apparatus, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the downlink direction, the AP may allocate a subcarrier for receiving data to the STA by modifying the preamble, that is, the first packet includes the first preamble and the second preamble, the first group of STAs obtains the subcarrier allocated to the first group of STAs by identifying the first preamble and obtains the first data according to the subcarrier, and the second group of STAs obtains the subcarrier allocated to the second group of STAs by identifying the second preamble and obtains the second data according to the subcarrier, the resources of the first channel and the second channel can be fully utilized by a multi-channel processing manner, so that it is avoided that one of the AP and the STAs does not support the high bandwidth capability, and only one channel can be used according to the negotiation of the low bandwidth capability, which causes waste, thereby reducing the occurrence of the overall air interface rate, the data are transmitted and received on the first channel and the second channel simultaneously, so that the interference condition caused by asynchronous data transmission and reception is avoided, the AP is informed in time in a mode that the STA sends a response frame to the AP, the STA receives the data, and the resource waste caused by continuous waiting of the AP is avoided.

In an optional aspect, the first preamble includes first spectrum allocation information indicating frequency domain resources for the first group of STAs to receive the first data, and the second preamble includes second spectrum allocation information indicating frequency domain resources for the second group of STAs to receive the second data.

In yet another optional scheme, the processing unit is further configured to determine a traffic flow of the first channel and a traffic flow of the second channel;

the communication unit is further configured to send a first notification message to a part of STAs in the first group of STAs when a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, where the first notification message is used to instruct the part of STAs in the first group of STAs to switch from the first channel to the second channel to become the second group of STAs; the communication unit is further configured to send a second notification message to a part of STAs in the second group of STAs when a difference between the traffic flow of the second channel and the traffic flow of the first channel is greater than the first threshold, where the second notification message is used to instruct the part of STAs in the second group of STAs to switch from the second channel to the first channel to become the first group of STAs.

In the device, the AP flexibly guides the STA to the first channel or the second channel by predicting the traffic flow of the channel, so that the extreme condition that the load on one channel is very heavy and the load on the other channel is very light can be avoided, the traffic condition on the channels can be comprehensively considered, and the resources can be reasonably utilized.

In yet another optional aspect, the communication unit is further configured to transmit a first management frame on the first channel, where the first management frame is used by the first group of STAs to determine a connection status with the AP;

the communication unit is further configured to send a second management frame on the second channel, where the second management frame is used by the second group of STAs to determine a connection status with the AP.

In the above apparatus, the AP transmits the first management frame on the first channel and transmits the second management frame on the second channel, so that the STA can know that there is an AP nearby by monitoring the management frame on the channel, and can maintain connection with the AP, thereby performing data communication quickly.

In yet another optional aspect, the communication unit is further configured to transmit a first trigger frame to the first group of STAs on the first channel, where the first trigger frame includes the first spectrum allocation information, where the first spectrum allocation information is used to instruct the first group of STAs to transmit frequency-domain resources of third data to the AP, and the first trigger frame includes a first duration, where the first duration is a time for transmission of the third data on the first channel;

the communication unit is further configured to receive third data sent by the first group of STAs on the first channel;

the communication unit is further configured to send a third response frame to the first group of STAs on the first channel, where the third response frame is used to notify the first group of STAs that the AP has received the third data;

the communication unit is further configured to send a second trigger frame to the second group of STAs on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to indicate frequency domain resources for the second group of STAs to send fourth data to the AP, the second trigger frame includes a second duration, and the second duration is a time when the fourth data is transmitted on the second channel, where the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel;

the communication unit is further configured to receive fourth data sent by the second group of STAs on the second channel;

the communication unit is further configured to send a fourth response frame to the second group of STAs on the second channel, where the fourth response frame is used to notify the second group of STAs that the AP has received the fourth data.

In the above apparatus, when the bandwidth capability supported by the access point AP is greater than the bandwidth capability supported by the station STA, in the uplink direction, the AP informs the STA of the sub-carrier when sending data information to the AP by sending a trigger frame to the STA, the first channel and the second channel resources can be fully utilized by a multi-channel processing mode, the total air interface rate is improved, the condition that only one channel resource is used when negotiation can be carried out only according to low bandwidth capability because the bandwidth capabilities of the AP and the STA are inconsistent is avoided, thereby causing resource waste, and indicating that the transmission time of the data on the first channel and the second channel is the same through the trigger frame, avoiding causing interference, ensuring data quality, and the AP sends a response frame to the STA, so that the STA is informed of the data received by the AP in time, and the resource waste caused by the continuous waiting of the STA is avoided.

In yet another optional aspect, the communication unit is further configured to transmit the first preamble and the first data to the first group of STAs on the first channel and transmit the second preamble and the second data to the second group of STAs on the second channel at the same time, where a transmission time of the first preamble and the first data on the first channel is the same as a transmission time of the second preamble and the second data on the second channel.

A fourth aspect of the present embodiment discloses a multi-channel processing apparatus, including:

the communication unit is used for receiving a first message sent by an Access Point (AP), wherein the first message comprises a first lead code and a second lead code;

a processing unit, configured to identify a first preamble in the first message or a second preamble in the first message, where the first preamble includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of station STAs, the second preamble includes second bandwidth information, and the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of station STAs;

the communication unit is further configured to receive first data according to the first bandwidth information or receive second data according to the second bandwidth information, where the first packet includes the first data and the second data, the first channel and the second channel do not intersect with each other, a sum of a bandwidth of the first channel and a bandwidth of the second channel is less than or equal to a bandwidth supported by the AP, the first group of STAs includes at least one STA, and the second group of STAs includes at least one STA;

the communication unit is further configured to send a first response frame to the AP on a first channel, where the first response frame is used to notify the AP that the STA has received the first data; or sending a second response frame to the AP on a second channel, where the second response frame is used to notify the AP that the STA has received the second data.

In the above apparatus, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the downlink direction, the AP may allocate a subcarrier for receiving data to the STA by modifying the preamble, that is, the first packet includes a first preamble and a second preamble, the first group of STAs obtains the subcarrier allocated to the first group of STAs by the AP by identifying the first preamble and obtains the first data according to the subcarrier, and the second group of STAs obtains the subcarrier allocated to the second group of STAs by identifying the second preamble and obtains the second data according to the subcarrier, which can fully utilize the resources of the first channel and the second channel, avoid waste caused by using only one channel, reduce the overall air interface rate, and avoid the interference caused by asynchronous data transceiving on the first channel and the second channel, and the STA is informed to the AP in time in a mode of sending a response frame to the AP, and the STA receives data, so that resource waste caused by continuous waiting of the AP is avoided, and the first channel and the second channel can be fully utilized in a multi-channel processing mode.

In yet another optional scheme, the communication unit is further configured to receive a first notification message sent by the AP when a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, where the first notification message is used to instruct a part of STAs in the first group of STAs to switch from the first channel to the second channel; or

The communication unit is further configured to receive a second notification message sent by the AP when a difference between the traffic flow of the second channel and the traffic flow of the first channel is greater than the first threshold, where the second notification message is used to instruct a part of STAs in the second group of STAs to switch from the second channel to the first channel.

In the device, the AP flexibly guides the STA to the first channel or the second channel by predicting the traffic flow of the channel, so that the condition that the load on one channel is very heavy and the load on the other channel is very light can be avoided, the traffic condition on the channels can be comprehensively considered, and the resources can be reasonably utilized.

In yet another alternative, the communication unit is configured to receive, on the first channel, a first management frame sent by the AP, where the first management frame is used by the first group of STAs to determine a connection status with the AP;

the communication unit is further configured to receive, on the second channel, a second management frame sent by the AP, where the second management frame is used by the second group of STAs to determine a connection status with the AP.

In yet another optional aspect, the communication unit is further configured to receive, on the first channel, a first trigger frame sent by the AP, where the first trigger frame includes the first spectrum allocation information, and the first spectrum allocation information is used to instruct the first group of STAs to send frequency-domain resources of third data to the AP; the first trigger frame comprises a first time length, and the first time length is the time for transmitting the third data on the first channel;

the communication unit is further configured to send the third data to the AP;

the communication unit is further configured to receive a third response frame of the AP, where the third response frame is used to notify the STA that the AP has received the third data; or

The communication unit is further configured to receive, on the second channel, a second trigger frame sent by the AP, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to instruct the second group of STAs to send frequency domain resources of fourth data to the AP, the second trigger frame includes a second duration, and the second duration is a time when the fourth data is transmitted on the second channel, where the first trigger frame and the second trigger frame are used to instruct that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel;

the communication unit is further configured to send the fourth data to the AP;

the communication unit is further configured to receive a fourth response frame of the AP, where the fourth response frame is used to notify the STA that the AP has received the fourth data.

In the above apparatus, when the bandwidth capability supported by the access point AP is greater than the bandwidth capability supported by the station STA, in the uplink direction, the AP informs the STA of the sub-carrier when sending data information to the AP by sending a trigger frame to the STA, the first channel and the second channel resources can be fully utilized by a multi-channel processing mode, the total air interface rate is improved, the condition that only one channel resource is used when negotiation can be carried out only according to low bandwidth capability because the bandwidth capabilities of the AP and the STA are inconsistent is avoided, thereby causing resource waste, and indicating that the transmission time of the data on the first channel and the second channel is the same through the trigger frame, avoiding causing interference, ensuring data quality, and the AP sends a response frame to the STA, so that the STA is informed of the fact that the AP receives data in time, and resource waste caused by continuous waiting of the STA is avoided.

A fifth aspect of an embodiment of the present application discloses a multi-channel processing apparatus, which includes a processor, a memory, and a transceiver, where the memory is used to store a computer program, and the processor calls the computer program to perform the following operations:

generating a first message, where the first message includes a first lead code and a second lead code, the first lead code includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of Stations (STA), the second lead code includes second bandwidth information, the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of Stations (STA), the first channel and the second channel are not intersected, and a sum of the bandwidth of the first channel and the bandwidth of the second channel is less than or equal to a bandwidth supported by the AP;

sending the first message to the first group of STAs and the second group of STAs through a transceiver, wherein the first message comprises first data and second data, the first message is used for indicating the first group of STAs to receive the first data by using the first bandwidth information, and the second group of STAs to receive the second data by using the second bandwidth information, the first group of STAs comprises at least one STA, and the second group of STAs comprises at least one STA;

receiving, by the transceiver, a first response frame from the first group of STAs and a second response frame from the second group of STAs, the first response frame informing the AP that the first group of STAs has received the first data, the second response frame informing the AP that the second group of STAs has received the second data.

In yet another alternative, the processor is further configured to: determining the service flow of the first channel and the service flow of the second channel;

when the difference value between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold value, sending a first notification message to a part of STAs in the first group of STAs through a transceiver, wherein the first notification message is used for indicating the part of STAs in the first group of STAs to be switched from the first channel to the second channel to become the second group of STAs; and when the difference value between the service flow of the second channel and the service flow of the first channel is greater than a first threshold value, sending a second notification message to a part of STAs in the second group of STAs through a transceiver, wherein the second notification message is used for indicating the part of STAs in the second group of STAs to be switched from the second channel to the first channel to become the first group of STAs.

In yet another alternative, the processor is further configured to: transmitting, by a transceiver, a first management frame on the first channel, the first management frame for the first group of STAs to determine a connection status with the AP;

transmitting, by a transceiver, a second management frame on the second channel, the second management frame for the second group of STAs to determine a connection status with the AP.

In yet another alternative, the processor is further configured to: transmitting, by a transceiver, a first trigger frame to the first group of STAs on the first channel, the first trigger frame including the first spectrum allocation information, the first spectrum allocation information being used to instruct the first group of STAs to transmit frequency-domain resources of third data to the AP, the first trigger frame including a first duration, the first duration being a time for transmission of the third data on the first channel;

receiving, by the transceiver, third data transmitted by the first group of STAs on the first channel;

transmitting, by the transceiver, a third response frame to the first group of STAs on the first channel, the third response frame notifying the first group of STAs that the AP has received the third data;

transmitting, by a transceiver, a second trigger frame to the second group of STAs on the second channel, the second trigger frame including the second spectrum allocation information, the second spectrum allocation information being used to indicate frequency domain resources for the second group of STAs to transmit fourth data to the AP, the second trigger frame including a second duration, the second duration being a time for the fourth data to be transmitted on the second channel, wherein the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel;

receiving, by the transceiver, fourth data transmitted by the second group of STAs on the second channel;

transmitting, by the transceiver, a fourth response frame to the second group of STAs on the second channel, the fourth response frame for notifying the second group of STAs that the AP has received the fourth data.

In yet another alternative, the processor is configured to: transmitting, by a transceiver, the first preamble and the first data to the first group of STAs on the first channel and the second preamble and the second data to the second group of STAs on the second channel at the same time, wherein a transmission time of the first preamble and the first data on the first channel is the same as a transmission time of the second preamble and the second data on the second channel.

A sixth aspect of the present embodiment discloses a multi-channel processing apparatus, including a processor, a memory, and a transceiver, where the memory is used to store a computer program, and the processor invokes the computer program to perform the following operations:

receiving a first message sent by an Access Point (AP), wherein the first message comprises a first lead code and a second lead code;

identifying a first preamble in the first message or a second preamble in the first message, where the first preamble includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of station STAs, the second preamble includes second bandwidth information, and the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of station STAs;

receiving first data according to the first bandwidth information or second data according to the second bandwidth information, where the first packet includes the first data and the second data, the first channel and the second channel do not intersect with each other, and a sum of a bandwidth of the first channel and a bandwidth of the second channel is less than or equal to a bandwidth supported by the AP, where the station STA is a first group of stations STA or a second group of stations STA, the first group of stations includes at least one STA, and the second group of stations includes at least one STA;

transmitting a first response frame to the AP on a first channel, the first response frame being used to inform the AP that the STA has received the first data; or sending a second response frame to the AP on a second channel, where the second response frame is used to notify the AP that the STA has received the second data.

In yet another alternative, the processor is further configured to: when the difference value between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold value, receiving a first notification message sent by the AP through the transceiver, wherein the first notification message is used for instructing a part of STAs in the STAs to switch from the first channel to the second channel; or

And when the difference value between the service flow of the second channel and the service flow of the first channel is greater than a first threshold value, receiving a second notification message sent by the AP through the transceiver, wherein the second notification message is used for indicating a part of STAs in the STAs to be switched from the second channel to the first channel.

In yet another alternative, the processor is further configured to: receiving, by the transceiver, a first management frame sent by the AP on the first channel, the first management frame being used by the first group of STAs to determine a connection status with the AP;

receiving, by the transceiver, a second management frame sent by the AP on the second channel, the second management frame being used by the second group of STAs to determine a connection status with the AP.

In yet another alternative, the processor is further configured to: receiving, by the transceiver, a first trigger frame sent by the AP on the first channel, where the first trigger frame includes the first spectrum allocation information, where the first spectrum allocation information is used to instruct the STA to send frequency domain resources of third data to the AP, and the first trigger frame includes a first duration, where the first duration is a time for transmission of the third data on the first channel;

the STA sends the third data to the AP;

Receiving, by the transceiver, a second trigger frame sent by the AP on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to indicate frequency domain resources for the STA to send fourth data to the AP, and the second trigger frame includes a second duration, where the second duration is a time for the fourth data to be transmitted on the second channel, and the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel;

the STA sends the fourth data to the AP;

In the above device, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the uplink direction, the AP informs the STA of the subcarrier when sending data information to the AP by sending a trigger frame to the STA, and the resources of the first channel and the second channel can be fully utilized by a multi-channel processing method, so as to avoid the situation that one of the AP and the STA does not support the high bandwidth capability, only one channel can be used according to low bandwidth capability negotiation, which causes waste, and the occurrence of the situation of overall air interface rate is reduced, and data is simultaneously sent and received on the first channel and the second channel, so as to avoid the interference caused by asynchronous data sending and receiving, and indicate that the transmission time of data on the first channel and the second channel is the same by the trigger frame, so as to avoid causing interference, ensure the data quality, and send a response frame to the STA by the AP, and the STA is informed in time that the AP has received the data, so that the resource waste caused by the continuous waiting of the STA is avoided.

A seventh aspect of the embodiments of the present application discloses a chip, where the chip includes at least one processor and an interface circuit, and optionally, the chip further includes a memory, where the memory, the interface circuit, and the at least one processor are interconnected by a line, and a computer program is stored in the at least one memory; the computer program, when executed by the processor, implements the method described in any of the first and second aspects or alternatives to any of the aspects.

An eighth aspect of embodiments of the present application discloses a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the method described in any one of the first and second aspects or in an alternative aspect of any one of the first and second aspects.

Drawings

The drawings used in the embodiments of the present application are described below.

Fig. 1 is a schematic diagram of a system architecture for multi-channel processing according to an embodiment of the present application;

fig. 2 is a schematic diagram of a distribution of 20MHz bandwidth resource blocks provided in the embodiment of the present application;

fig. 3 is a schematic diagram of distribution of 40MHz bandwidth resource blocks according to an embodiment of the present application;

fig. 4 is a schematic diagram of distribution of resource blocks with 80MHz bandwidth according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a bandwidth occupation situation when an AP communicates with an STA according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a message format according to an embodiment of the present application;

fig. 7 is a schematic diagram illustrating bandwidth occupation when an AP communicates with an STA according to an embodiment of the present disclosure;

fig. 8 is a flowchart illustrating a multi-channel processing method according to an embodiment of the present application;

fig. 9 is a schematic format diagram of a preamble in a first message according to an embodiment of the present application;

fig. 10 is a schematic format diagram of a preamble in a first further type of message provided by an embodiment of the present application;

fig. 11 is a schematic diagram illustrating an AP sending a first packet to a first group of STAs and a second group of STAs according to an embodiment of the present application;

fig. 12 is a schematic diagram illustrating an online manner of a conventional STA according to an embodiment of the present application;

fig. 13 is a schematic diagram of an STA on a first channel according to an embodiment of the present application;

fig. 14 is a schematic diagram of an STA on a first channel and a second channel according to an embodiment of the present application;

fig. 15 is a schematic diagram of a channel switching according to an embodiment of the present application;

fig. 16 is a schematic diagram of a format of a trigger frame according to an embodiment of the present application;

fig. 17 is a schematic diagram illustrating interference caused by asynchronous data transmission and reception according to an embodiment of the present application;

fig. 18 is a schematic diagram of data transceiving synchronization according to an embodiment of the present application;

fig. 19 is a schematic diagram illustrating that cancellation signals are generated due to asynchronous data transceiving according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of a multi-channel processing apparatus according to an embodiment of the present application;

fig. 21 is a schematic structural diagram of a multi-channel processing apparatus according to an embodiment of the present application;

fig. 22 is a schematic structural diagram of a multi-channel processing apparatus according to an embodiment of the present application;

fig. 23 is a schematic structural diagram of a multi-channel processing apparatus according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a system architecture for multi-channel processing according to an embodiment of the present disclosure, where the system includes at least one Access Point (AP) 101 and at least one Station (STA) 102. The AP is a network element that provides services to stations, for example, the AP is an 802.11 series protocol capable AP, and the AP is a 160 megahertz (MHz) bandwidth capable device. For example, the station STA may be a station supporting the 802.11.ax protocol, which is an 80M bandwidth capable device.

As shown in fig. 1, the method provided by the embodiment of the present application may be applied to the system for multi-channel processing shown in fig. 1. In the communication system, 1 AP may perform data transmission with multiple STAs. For example, the AP in fig. 1 may perform uplink data transmission or downlink data transmission with two STAs.

With the continuous development of internet technology, people have higher and higher requirements on the internet, and in order to meet the requirements, the wireless internet access WiFi technology is gradually evolved to support higher and higher rates. The WiFi rate is mainly affected by the working bandwidth, modulation mode, and the number of Multiple In Multiple Out (MIMO), and the number of MIMO, working bandwidth, and modulation mode depend on the capabilities of both AP and STA, if one does not support, they can only negotiate according to the lower capability, and in the WiFi6 era, many APs already support 160M bandwidth, but many STAs still do not support 160M bandwidth.

Since WiFi6, the AP may support Orthogonal Frequency Division Multiple Access (OFDMA) technology, may simultaneously transmit and receive data with multiple STAs, each using a different subcarrier. The OFDMA technique divides a transmission bandwidth into orthogonal non-overlapping subcarrier sets, and allocates different subcarrier sets to different users to implement multiple access. The technology can dynamically allocate the available bandwidth resources to the required users, and the optimal utilization of the system resources is easily realized.

Since WiFi6, the concept of resource blocks (RU) was introduced, and the size of the RU resource blocks in WiFi6 has various sizes, including 26 sub-carrier sized resource blocks, 52 sub-carrier sized resource blocks, 106 sub-carrier sized resource blocks, 242 sub-carrier sized resource blocks, 484 sub-carrier sized resource blocks, and 996 sub-carrier sized resource blocks.

The size of the 20MHz bandwidth resource block is defined to be 26, 52, 106, 242. As shown in fig. 2, fig. 2 shows a schematic distribution diagram of 20MHz bandwidth resource blocks. The middle 26-size resource blocks span the direct current subcarrier, the direct current subcarrier is a small gap in the middle of the figure, the first layer is distributed at the positions of 9 26-size resource blocks, the second layer is distributed at the positions of 4 52 and 1 26-size resource blocks, the third layer is distributed at the positions of 2 106 and 1 26-size resource blocks, and the fourth layer is distributed at the positions of 1 242-size resource blocks. The 20MHZ spectrum block diagram may be a spectrum of 242 subcarriers combined for any resource block in these 4 layers. When the AP schedules, each user can only be allocated one resource block, but multiple users can be allocated to the same resource block.

The size of the 40MHz bandwidth resource block is defined to be 26, 52, 106, 242, 484. As shown in fig. 3, fig. 3 shows a distribution diagram of 40MHz bandwidth resource blocks. The middle small gap is a direct current subcarrier. The first layer is the position distribution of 18 resource blocks with 26 sizes, the second layer is the position distribution of 8 resource blocks with 52 sizes and 2 resource blocks with 26 sizes, the third layer is the position distribution of 4 resource blocks with 106 sizes and 2 resource blocks with 26 sizes, the fourth layer is the position distribution of 2 resource blocks with 242 sizes, the resource blocks with 242 sizes are 20M bandwidth, the fifth layer is the position distribution of 1 resource block with 484 sizes, and the resource blocks with 484 sizes are 40M bandwidth. The 40MHz spectrum block diagram can be a spectrum with a size of 484 subcarriers formed by combining any resource blocks in the 5 layers, and each user can only allocate one resource block.

The resource blocks of the 80MHz bandwidth are defined as 26, 52, 106, 242, 484, and 996. As shown in fig. 4, fig. 4 shows a distribution diagram of resource blocks with a bandwidth of 80 MHz. The 80MHz bandwidth block diagram is divided into 6 layers, the middle 26 size resource block spans the direct current sub-carrier, and the middle small gap is the direct current sub-carrier. The first layer is the position distribution of 37 resource blocks with 26 sizes, the second layer is the position distribution of 16 resource blocks with 52 sizes and 5 resource blocks with 26 sizes, the third layer is the position distribution of 8 resource blocks with 106 sizes and 5 resource blocks with 26 sizes, the fourth layer is the position distribution of 4 resource blocks with 242 sizes and 1 resource block with 26 sizes, the resource block with 242 sizes is 20M bandwidth, the fifth layer is the position distribution of 2 resource blocks with 484 sizes and 1 resource block with 26 sizes, the resource block with 484 sizes is 40M bandwidth, the sixth layer is the position distribution of 1 resource block with 996 sizes, and the resource block with 996 sizes is 80M bandwidth. The 80MHz spectrum block diagram can be a spectrum with the size of 996 subcarriers formed by combining any resource blocks in the 6 layers, and each user can only allocate one resource block.

As shown in fig. 5, fig. 5 is a schematic diagram illustrating bandwidth occupation when an AP communicates with an STA. If the AP supports 160MHz bandwidth, the STA1 supports 160M bandwidth, and the STA2 only supports 80M bandwidth, when the AP supporting 160M bandwidth capability transmits a packet to the STA supporting 80M bandwidth capability in the downlink direction, the packet format is as shown in fig. 6, which includes a preamble and data, where the preamble includes an efficient signaling field a (siga) that is the bandwidth capability 160M supported by the AP, and a conventional signaling field b (SIGB), and according to the WiFi6 standard, the SIGBs of odd subchannels are the same, and the SIGBs of even subchannels are the same, that is, when the AP communicates with the STA2 supporting only 80M bandwidth, the AP can only receive and transmit data according to 80M bandwidth, thereby wasting the remaining 80M bandwidth.

To avoid this, as shown in fig. 7, fig. 7 is a schematic diagram illustrating bandwidth occupation when the AP communicates with the STA. If the AP supports 160M bandwidth, the STA1 supports 160M bandwidth, and the STA2 only supports 80M bandwidth, according to the WiFi6 standard, when allocating bandwidth resources, the AP allocates 80M bandwidth to the STA1 supporting 160M bandwidth for receiving and sending data, and allocates 80M bandwidth to the STA2 supporting 80M bandwidth for receiving and sending data, but when the traffic of the STA1 supporting 160M bandwidth is less, and the traffic of the STA2 supporting 80M bandwidth is larger, there is still waste. In order to solve the above technical problem, embodiments of the present application provide the following solutions.

Referring to fig. 8, fig. 8 is a schematic flowchart of a multi-channel processing method according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:

step S801: the access point AP generates a first message.

Specifically, the first message includes a first preamble and a second preamble, where the first preamble includes first bandwidth information and first spectrum allocation information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of STAs, and the first spectrum allocation information is used to indicate a frequency domain resource for the first group of STAs to receive first data; the second preamble includes second bandwidth information and second spectrum allocation information, the second bandwidth information is configured according to a bandwidth of a second channel occupied by the second group of STAs, and the second channel allocation information is used to indicate frequency domain resources for the second group of STAs to receive second data. The first channel and the second channel do not intersect, and the sum of the bandwidth of the first channel and the bandwidth of the second channel is less than or equal to the bandwidth supported by the AP.

For example, if the access point AP supports 160M bandwidth capable devices, the first group of stations STA is 80M bandwidth capable devices, and the second group of stations STA is 80M bandwidth capable devices, the format of the preamble in the first message is as shown in fig. 9. The first message comprises a first lead code and a second lead code, the first lead code comprises first frequency width information and first spectrum allocation information, the first frequency width information is a high-efficiency signaling field A (SIGA), the SIGA is 80M, and the first spectrum allocation information is allocation information of sub-channels 1, 2, 3 and 4; the second preamble includes second bandwidth information and second spectrum allocation information, the second bandwidth information is an efficient signaling field a (SIGA), the SIGA is 80M, and the second spectrum allocation information is allocation information of 5, 6, 7, and 8 subchannels.

For example, if the access point AP is a device supporting 320M bandwidth capability, the first group of stations STA is a device supporting 160M bandwidth capability, the second group of stations STA is a device supporting 80M bandwidth capability, and the third group of stations STA is a device supporting 80M bandwidth capability, the format of the preamble in the first message is as shown in fig. 10. The first message comprises a first lead code, a second lead code and a third lead code, the first lead code comprises first frequency width information and first spectrum allocation information, the first frequency width information is a high-efficiency signaling field A (SIGA), the SIGA is 160M, and the first spectrum allocation information is allocation information of sub-channels of 1, 2, 3, 4, 5, 6, 7 and 8; the second preamble includes second bandwidth information and second spectrum allocation information, the second bandwidth information is an efficient signaling field a (SIGA), the SIGA is 80M, and the second spectrum allocation information is allocation information of 9, 10, 11, and 12 subchannels. The third preamble comprises third bandwidth information and third spectrum allocation information, the third bandwidth information is a high-efficiency signaling field a (SIGA), the SIGA is 80M, and the third spectrum allocation information is allocation information of 13, 14, 15, and 16 sub-channels.

Step S802: the AP sends a first message to the first group of STA and the second group of STA.

Specifically, the first packet includes first data and second data, the first preamble is used to instruct a first group of STAs to receive the first data using the first bandwidth information, and the second preamble is used to instruct a second group of STAs to receive the second data using the second bandwidth information, where the first group of STAs includes at least one STA and the second group of STAs includes at least one STA.

Specifically, the downlink multi-user transmission is performed in an AP centralized scheduling manner, and the AP simultaneously sends the first packet to the first group of STAs and the second group of STAs in an OFDMA manner or a multi-user multiple-input multiple-output (MU-MIMO) manner.

Specifically, after receiving the first message, the first group of STAs identify a first preamble in the first message, obtain a resource block allocated to the first group of STAs by the AP according to first spectrum allocation information in the first preamble, and receive first data sent by the AP to the first group of STAs by the first group of STAs in the resource block; after receiving the first message, the second group of STAs identifies a second preamble in the first message, and obtains a resource block allocated to the second group of STAs by the AP according to second spectrum allocation information in the second preamble, and the second group of STAs receives second data sent by the AP to the second group of STAs in the resource block.

For example, as shown in fig. 11, fig. 11 is a diagram illustrating an AP sending a first message to a first group of STAs and a second group of STAs. If the AP is a device supporting the bandwidth capability of 160M, the first group of STAs includes STA1 and STA2, both STA1 and STA2 are devices supporting the bandwidth capability of 80M, the second group of STAs includes STA3 and STA4, both STA3 and STA4 are devices supporting the bandwidth capability of 80M, STA1 and STA2 are in the first channel, STA3 and STA4 are in the second channel, when STA1 receives the first packet in the first channel, STA1 identifies the first preamble in the first packet, obtains the subcarrier allocated to STA1 by the AP according to the first spectrum allocation information in the first preamble, STA1 obtains the data sent by the AP to STA1 on the corresponding subcarrier, when STA2 receives the first packet in the first channel, STA2 identifies the first preamble in the first packet, obtains the subcarrier allocated to the AP by STA 5 according to the first spectrum allocation information in the first preamble, and obtains the subcarrier allocated to the data sent by the STA2 on the corresponding STA 57324; when the STA3 receives the first packet in the second channel, the STA3 identifies the second preamble in the first packet, obtains the subcarrier allocated by the AP to the STA3 according to the second spectrum allocation information in the second preamble, the STA3 obtains the data transmitted by the AP to the STA3 on the corresponding subcarrier, when the STA4 receives the first packet in the first channel, the STA4 identifies the second preamble in the first packet, obtains the subcarrier allocated by the AP to the STA4 according to the second spectrum allocation information in the second preamble, and the STA4 obtains the data transmitted by the AP to the STA2 on the corresponding subcarrier. The STA1 and the STA2 share the resource block with the bandwidth of 80M, specifically, how much of the resource block with the bandwidth of 80M is occupied by the STA1 and the STA2 respectively is determined by the AP scheduling, the STA3 and the STA4 share the resource block with the bandwidth of 80M, and specifically, how much of the resource block with the bandwidth of 80M is occupied by the STA3 and the STA4 respectively is determined by the AP scheduling.

In the embodiment of the present application, before the AP sends the first packet to the first group of STAs and the second group of STAs, the AP and the STAs establish a communication connection in the following manner: as shown in fig. 12, the legacy STA comes on line. If the AP is a device supporting 160M bandwidth, STA1, STA2, and STA3 are all devices supporting 80M bandwidth, the 160M channel is divided into master 80M and slave 80M. In the conventional mode, the AP sends a beacon frame to the master 20M of the master 80M, the STA1 and the STA2 listen to the beacon frame, and when the master 20M sends an authentication request, the AP replies an authentication response to the STA1 and the STA2, and then the AP establishes a connection with the STA1 and the STA 2; although the AP is also transmitting a beacon frame from the slave 20M of 80M and the STA3 also listens to the beacon frame, when the STA3 transmits an authentication request, the AP is not present in the slave 20M of 80M and therefore cannot receive the authentication request, and therefore the STA3 cannot go online in the slave 80M but only goes online in the master 80M. If, as shown in fig. 13, the STA comes online on the first channel. If there are 4 STAs supporting 80M bandwidth, that is, STA1, STA2, STA3, and STA4 go online in the master 80M, that is, all are on the first channel, the AP sends a notification message to STA3 and STA4 to notify STA3 and STA4 to switch to the slave 80M, that is, the second channel, at this time, the AP waits on the master 20M of the slave 80M, sends a beacon frame on the master 20M of the slave 80M, and STA3 and STA4 listen to the beacon frame, and sends an authentication request to the AP, and the AP receives the authentication request, so that STA3 and STA4 establish a connection with the AP on the slave 80M, as shown in fig. 14, a schematic diagram of the STA going online on the first channel and the second channel, and a diagram of the STA3 and STA4 going online in the slave 80M. STA1 and STA2 are at the master 80M, i.e., the first channel, and STA3 and STA4 are at the slave 80M, i.e., the second channel, at this time. The AP may communicate with STA1, STA2, STA3, STA 4.

In the embodiment of the application, before the AP sends the first packet to the first group of STAs and the second group of STAs, the AP sends a first management frame on the first channel, where the first management frame is used for the first group of STAs to determine a connection state with the AP; the AP transmits a second management frame on the second channel, the second management frame being used by a second group of STAs to determine a connection status with the AP.

Specifically, after the AP establishes a communication connection with the first group of STAs and the second group of STAs, that is, after the first group of STAs and the second group of STAs are online, in order to keep the first group of STAs and the second group of STAs continuously connected with the AP, the AP transmits a first management frame in the first channel and transmits a second management frame in the second channel, where the first management frame and the second management frame may be beacon frames, and the AP may periodically broadcast and transmit the beacon frames outwards.

For example, the default period for the AP to send the beacon frame is 100ms, the AP broadcasts and sends the beacon frame on the first channel and the second channel every 100ms, the first group of STAs listens for the beacon frame continuously on the first channel supported by the first group of STAs to know the APs existing around, and the second group of STAs listens for the beacon frame continuously on the second channel supported by the second group of STAs to know the APs existing around.

Step S803, the AP receives a first response frame from the first group of STAs and a second response frame from the second group of STAs.

Specifically, the first response frame is used to inform the AP that the first group of STAs has received the first data, and the second response frame is used to inform the AP that the second group of STAs has received the second data.

Optionally, the embodiment of the present application further includes the following steps:

step S804: the AP determines the traffic flow of the first channel and the traffic flow of the second channel.

Specifically, the traffic flow of the first channel is a traffic flow of the AP and the first group of STAs, and the traffic flow of the second channel is a traffic flow of the AP and the second group of STAs.

For example, if the first group of STAs is in the first channel and the second group of STAs is in the second channel, the first group of STAs and the AP perform video streaming within ten minutes, the traffic flow value of the first channel is 100 megabits, the second group of STAs and the AP perform instant messaging, and the traffic flow value of the second channel is 20 megabits, and if the first threshold is 50 megabits, the AP determines that the difference between the traffic flow of the first channel and the traffic flow of the second channel is 70 megabits and is greater than the first threshold of 50 megabits.

Specifically, the AP may notify the STA to perform channel switching according to the sizes of the traffic flow of the first channel and the traffic flow of the second channel, may also notify the STA to perform channel switching according to the importance of the STA, and may also notify the STA to perform channel switching according to the bandwidth capability of the STA.

Specifically, the AP may also estimate the traffic condition of the STA before the STA establishes a communication connection with the AP, that is, before the STA is online, and notify the STA to perform channel switching according to the traffic condition of the STA.

Step S805: the AP determines whether a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold.

Specifically, if the difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than the first threshold, step S806 is executed, and if the difference between the traffic flow of the first channel and the traffic flow of the second channel is not greater than the first threshold, step S807 is executed.

For example, if the AP determines that the traffic flow value of the first channel is 100 megabits and the traffic flow value of the second channel is 20 megabits, and if the first threshold is 50 megabits, the AP determines that the difference between the traffic flow of the first channel and the traffic flow of the second channel is 70 megabits and greater than 50 megabits, step S806 is executed.

Step S806: the AP sends a first notification message to a part of STAs in the first group of STAs.

Specifically, the first notification message is used to instruct a portion of the STAs in the first group of STAs to switch from the first channel to the second channel.

For example, as shown in fig. 15, fig. 15 shows a channel switching diagram. The first group of STAs includes STA1, STA3, and STA4, and the STA1, STA3, and STA4 are all in the first channel, and since the traffic flow of the first channel is greater than the traffic flow of the second channel, the AP sends a first notification message to STA1, STA2, or STA4 to notify STA1, STA2, or STA4 to switch from the first channel to the second channel.

Step S807: the AP sends a second notification message to a portion of the STAs in the second group of STAs.

Specifically, the second notification message is used to instruct a portion of the STAs in the second group of STAs to switch from the second channel to the first channel.

The above embodiments illustrate how the AP can transmit data to the STA by making full use of the bandwidth in the downlink direction, and next, how the AP can receive data transmitted by the STA by making full use of the bandwidth in the uplink direction will be described.

The method comprises the steps that an AP sends a first trigger frame to a first group of STAs on a first channel, wherein the first trigger frame comprises first spectrum allocation information, the first spectrum allocation information is used for indicating the first group of STAs to send frequency domain resources of third data to the AP, the first trigger frame comprises first duration, and the first duration is the time for the third data to be transmitted on the first channel;

the AP sends a third response frame to the first group of STAs on the first channel, wherein the third response frame is used for informing the STAAPs that third data are received;

the AP sends a second trigger frame to a second group of STAs on a second channel, the second trigger frame comprises second spectrum allocation information, the second spectrum allocation information is used for indicating the second group of STAs to send frequency domain resources of fourth data to the AP, the second trigger frame comprises a second time length, the second time length is the time of transmitting the fourth data on the second channel, and the first trigger frame and the second trigger frame are used for indicating that the transmission time of the third data on the first channel is the same as the transmission time of the fourth data on the second channel;

the AP sends a fourth response frame to the second group of STAs on the second channel, the fourth response frame being used to inform the STAs that the AP has received the fourth data.

Specifically, for uplink multi-user transmission, after an AP centralized resource scheduling manner is adopted, the AP needs to send a trigger frame to the STA to transmit resource indication information of uplink transmission, so that multi-user simultaneous transmission can be performed. The format of the trigger frame is shown in fig. 16, and the trigger frame mainly includes two parts of information: the common information field is used for indicating the trigger frame type and trigger information common to some STAs, and the user information field indicates the resource indication information of each STA respectively.

Specifically, after receiving a first trigger frame in a first channel, a first group of STAs identifies first spectrum allocation information on the first trigger frame, that is, obtains a resource block allocated to the first group of STAs by an AP, the first group of STAs sends third data to the AP in the resource block, and correspondingly, the AP receives the third data sent by the first group of STAs in the first channel, and the AP sends a third response frame to the first group of STAs in the first channel to notify the first group of STAs that the AP has received the third data; after receiving the second trigger frame on the second channel, the second group of STAs identifies the second spectrum allocation information on the second trigger frame, that is, obtains the resource block allocated to the second group of STAs by the AP, and sends fourth data to the AP in the resource block, accordingly, the AP receives third data sent by the second group of STAs on the second channel, and sends a fourth response frame to the second group of STAs on the second channel to notify the second group of STAs that the AP has received the fourth data, wherein the starting time of sending the third data to the AP by the first group of STAs is the same as the starting time of sending the fourth data to the AP by the second group of STAs, and the transmission time of the third data on the second channel is the same as the transmission time of the fourth data on the first channel and the second channel.

The foregoing embodiment describes a case where message transmission and reception on the first channel and the second channel are synchronous, and the following describes a case where message transmission and reception on the first channel and the second channel are asynchronous.

As shown in fig. 17, fig. 17 is a schematic diagram showing a case where data transmission and reception are not synchronized. In order to solve the above problem, the present application proposes synchronization of data transmission and reception on the second channel of the first channel, as shown in fig. 18, where fig. 18 shows that the first channel and the second channel transmit and receive data simultaneously. In addition to the above solutions, the present application also proposes the following solutions.

When the AP sends a second message to the first group of STAs on the first channel at the first moment, the AP receives fifth data sent by the second group of STAs on the second channel, and the AP generates a first counteracting signal when the second message is sent to the first group of STAs on the first channel at the first moment; the first cancellation signal is used to cancel an interference signal generated when the AP receives fifth data from the second group of STAs in the second channel when the AP sends the second packet to the first group of STAs in the first channel, as shown in fig. 19; or

When the AP sends a second message to the second group of STAs on a second channel at a second moment, the AP receives sixth data sent by the first group of STAs on the first channel, and generates a second counteracting signal when the AP sends the second message to the second group of STAs on the second channel at the second moment; the second cancellation signal is used for canceling an interference signal generated when the AP receives sixth data from the first group of STAs on the first channel when the second channel sends the second message to the second group of STAs.

In the method illustrated in fig. 8, when the bandwidth capability supported by the AP is greater than the bandwidth capability supported by the STA, in the downlink direction, the AP may allocate a subcarrier for receiving data to the STA by modifying the preamble, that is, the first message includes a first preamble and a second preamble, the first group of STAs obtains the subcarrier allocated by the AP to the first group of STAs by identifying the first preamble and obtains the first data according to the subcarrier, and the second group of STAs obtains the subcarrier allocated by the AP to the second group of STAs by identifying the second preamble and obtains the second data according to the subcarrier, the resources of the first channel and the second channel can be fully utilized by a multi-channel processing manner, so as to avoid that one of the AP and the STAs does not support the high bandwidth capability, and only one channel can be negotiated according to the lower bandwidth capability, which causes waste, thereby reducing the overall air interface rate, the data are transmitted and received on the first channel and the second channel simultaneously, so that the interference condition caused by asynchronous data transmission and reception is avoided, the AP is informed in time in a mode that the STA sends a response frame to the AP, the STA receives the data, and the resource waste caused by continuous waiting of the AP is avoided.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

Referring to fig. 20, fig. 20 is a schematic structural diagram of a multi-channel processing apparatus according to an embodiment of the present application, and the multi-channel processing apparatus 2000 may include a processing unit 2001 and a communication unit 2002, where details of each unit are described as follows.

A processing unit 2001, configured to generate a first packet, where the first packet includes a first preamble and a second preamble, the first preamble includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of STAs, the second preamble includes second bandwidth information, the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of STAs, the first channel and the second channel do not intersect with each other, and a sum of a bandwidth of the first channel and a bandwidth of the second channel is less than or equal to a bandwidth supported by the AP;

a communication unit 2002, configured to send the first packet to the first group of STAs and the second group of STAs, where the first packet includes first data and second data, the first preamble is used to instruct the first group of STAs to receive the first data using the first bandwidth information, and the second preamble is used to instruct the second group of STAs to receive the second data using the second bandwidth information, where the first group of STAs includes at least one STA, and the second group of STAs includes at least one STA;

the communication unit 2002 is further configured to receive a first response frame from the first group of STAs and a second response frame from the second group of STAs, where the first response frame is used to notify the AP that the first group of STAs has received the first data, and the second response frame is used to notify the AP that the second group of STAs has received the second data.

In yet another alternative, the processing unit 2001 is further configured to determine a traffic flow of the first channel and a traffic flow of the second channel; the communication unit 2002 is further configured to send a first notification message to a part of STAs in the first group of STAs, where a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, and the first notification message is used to instruct the part of STAs in the first group of STAs to switch from the first channel to the second channel to become a second group of STAs; the communication unit is further configured to send a second notification message to a part of STAs in the second group of STAs when a difference between the traffic flow of the second channel and the traffic flow of the first channel is greater than the first threshold, where the second notification message is used to instruct the part of STAs in the second group of STAs to switch from the second channel to the first channel to become the first group of STAs.

In yet another alternative, the communication unit 2002 is further configured to transmit a first management frame on the first channel, where the first management frame is used by the first group of STAs to determine a connection status with the AP; the communication unit 2002 is further configured to send a second management frame on the second channel, where the second management frame is used by the second group of STAs to determine a connection status with the AP.

In yet another alternative, the communication unit 2002 is further configured to send a first trigger frame to the first group of STAs on the first channel, where the first trigger frame includes the first spectrum allocation information, where the first spectrum allocation information is used to instruct the first group of STAs to send frequency-domain resources of third data to the AP, and the first trigger frame includes a first duration, where the first duration is a time for transmission of the third data on the first channel; the communication unit 2002 is further configured to receive, on the first channel, third data transmitted by the first group of STAs; the communication unit 2002 is further configured to transmit a third response frame to the first group of STAs on the first channel, where the third response frame is used to notify the first group of STAs that the AP has received the third data;

the communication unit 2002 is further configured to send a second trigger frame to the second group of STAs on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to indicate frequency domain resources for the second group of STAs to send fourth data to the AP, and the second trigger frame includes a second duration, which is a time when the fourth data is transmitted on the second channel, where the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel; the communication unit 2002 is further configured to receive, on the second channel, fourth data transmitted by the second group of STAs; the communication unit 2002 is further configured to send a fourth response frame to the second group of STAs on the second channel, where the fourth response frame is used to notify the second group of STAs that the AP has received the fourth data.

In yet another alternative, the communication unit 2002 is further configured to transmit the first preamble and the first data to the first group of STAs on the first channel and transmit the second preamble and the second data to the second group of STAs on the second channel at the same time, where a transmission time of the first preamble and the first data on the first channel is the same as a transmission time of the second preamble and the second data on the second channel.

It should be noted that the implementation and beneficial effects of each unit can also correspond to the corresponding description of the method embodiment shown in fig. 8.

Referring to fig. 21, fig. 21 is a schematic structural diagram of a multi-channel processing apparatus 2100 according to an embodiment of the present application, where the multi-channel processing apparatus 2100 may include a communication unit 2101 and a processing unit 2102, where details of each unit are described below.

A communication unit 2101, configured to receive a first message sent by an access point AP, where the first message includes a first preamble and a second preamble;

a processing unit 2102 configured to identify a first preamble in the first message or a second preamble in the first message, where the first preamble includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of station STAs, the second preamble includes second bandwidth information, and the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of station STAs;

the communication unit 2101 is further configured to receive first data according to the first bandwidth information or receive second data according to the second bandwidth information, where the first packet includes the first data and the second data, the first channel and the second channel do not intersect with each other, a sum of a bandwidth of the first channel and a bandwidth of the second channel is less than or equal to a bandwidth supported by the AP, the first group of STAs includes at least one STA, and the second group of STAs includes at least one STA;

the communication unit 2101 is further configured to transmit a first response frame to the AP on a first channel, where the first response frame is used to notify the AP that the STA has received the first data; or the communication unit 2101 is further configured to send a second response frame to the AP on a second channel, where the second response frame is used to notify the AP that the STA has received the second data.

In yet another alternative, the communication unit 2101 is further configured to receive a first notification message sent by the AP when a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, where the first notification message is used to instruct some STAs in the first group of STAs to switch from the first channel to the second channel; or

The communication unit 2101 is further configured to receive a second notification message sent by the AP when a difference between the traffic flow of the second channel and the traffic flow of the first channel is greater than a first threshold, where the second notification message is used to instruct a part of STAs in the second group of STAs to switch from the second channel to the first channel.

In yet another alternative, the communication unit 2101 is further configured to receive a first management frame sent by the AP on the first channel, where the first management frame is used by the first group of STAs to determine a connection status with the AP;

the communication unit 2101 is further configured to receive, on the second channel, a second management frame sent by the AP, where the second management frame is used by the second group of STAs to determine a connection status with the AP.

In yet another optional scenario, the communication unit 2101 is further configured to receive, on the first channel, a first trigger frame sent by the AP, where the first trigger frame includes the first spectrum allocation information, where the first spectrum allocation information is used to instruct the first group of STAs to send frequency domain resources of third data to the AP, and the second trigger frame includes a second duration, where the second duration is a time when the fourth data is transmitted on the second channel; the communication unit 2101 is further configured to send the third data to the AP; the communication unit 2101 is further configured to receive a third response frame from the AP, where the third response frame is used to notify the STA that the AP has received the third data; or

The communication unit 2101 is further configured to receive a second trigger frame sent by the AP on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to instruct the second group of STAs to send frequency domain resources of fourth data to the AP, the second trigger frame includes a second duration, and the second duration is a time when the fourth data is transmitted on the second channel, where the first trigger frame and the second trigger frame are used to instruct that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel; the communication unit 2101 is further configured to transmit the fourth data to the AP; the communication unit 2101 is further configured to receive a fourth response frame from the AP, where the fourth response frame is used to notify the STA that the AP has received the fourth data.

Referring to fig. 22, fig. 22 is a multi-channel processing apparatus 2200, a processor 2201 and a transceiver 2203 according to an embodiment of the present application, and optionally, the multi-channel processing apparatus 2200 further includes a memory 2202, and the processor 2201, the memory 2202 and the transceiver 2203 are connected to each other through a bus 2204.

The memory 2202 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 402 is used to store computer programs and data. The transceiver 2203 is used for receiving and transmitting data.

The processor 2201 may be one or more Central Processing Units (CPUs), and in the case that the processor 2201 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 2201 in the multi-channel processing apparatus 2200 invokes a computer program stored in said memory 2202 for performing the following operations:

transmitting, by a transceiver 2203, the first packet to the first group of STAs and the second group of STAs, the first packet including first data and second data, the first preamble being used to instruct the first group of STAs to receive the first data using the first bandwidth information, and the second preamble being used to instruct the second group of STAs to receive the second data using the second bandwidth information, the first group of STAs including at least one STA, the second group of STAs including at least one STA;

receiving, by a transceiver 2203, a first response frame from the first group of STAs to inform the first group of STAs that the first data has been received and a second response frame from the second group of STAs to inform the second group of STAs that the second data has been received.

In yet another alternative, the processor 2201 is further configured to: determining the service flow of the first channel and the service flow of the second channel;

In yet another alternative, the processor 2201 is further configured to: transmitting, by a transceiver, a first management frame on the first channel, the first management frame for the first group of STAs to determine a connection status with the AP;

transmitting, by transceiver 2203, a second management frame on the second channel, the second management frame for the second group of STAs to determine a connection status with the AP.

In yet another alternative, the processor 2201 is further configured to: transmitting, by a transceiver 2203, a first trigger frame to the first group of STAs on the first channel, the first trigger frame including the first spectrum allocation information, the first spectrum allocation information being used to instruct the first group of STAs to transmit frequency-domain resources of third data to the AP, the first trigger frame including a first duration, the first duration being a time for transmission of the third data on the first channel; receiving, by transceiver 2203, third data transmitted by the first group of STAs on the first channel; transmitting, by transceiver 2203, a third response frame to the first group of STAs on the first channel, the third response frame for notifying the first group of STAs that the AP has received the third data;

transmitting, by a transceiver 2203, a second trigger frame to the second group of STAs on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to instruct the second group of STAs to transmit frequency-domain resources of fourth data to the AP, and the second trigger frame includes a second duration, which is a time when the fourth data is transmitted on the second channel, and the first trigger frame and the second trigger frame are used to instruct that the transmission time of the third data on the first channel is the same as the transmission time of the fourth data on the second channel; receiving, by the transceiver 2203, fourth data transmitted by the second group of STAs on the second channel; transmitting, by the transceiver 2203, a fourth response frame to the second group of STAs on the second channel, the fourth response frame for notifying the second group of STAs that the AP has received the fourth data.

In yet another alternative, the processor 2201 is configured to: transmitting, by a transceiver, the first preamble and the first data to the first group of STAs on the first channel and the second preamble and the second data to the second group of STAs on the second channel at the same time, wherein a transmission time of the first preamble and the first data on the first channel is the same as a transmission time of the second preamble and the second data on the second channel.

It should be noted that the implementation and beneficial effects of the respective operations may also correspond to the corresponding description of the method embodiment shown in fig. 8.

Referring to fig. 23, fig. 23 is a multi-channel processing device 2300, a processor 2301 and a transceiver 2303 provided in an embodiment of the present application, and optionally, the multi-channel processing device 2300 further includes a memory 2302, and the processor 2301, the memory 2302 and the transceiver 2303 are connected with each other through a bus 2304.

The memory 2302 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 402 is used for storing computer programs and data. The transceiver 2303 is used for receiving and transmitting data.

The processor 2301 may be one or more Central Processing Units (CPUs), and in the case where the processor 2301 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 2301 in the multi-channel processing apparatus 2300 calls the computer program stored in the memory 2302 to perform the following operations:

In yet another alternative, the processor 2301 is further configured to: when the difference value between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold value, receiving a first notification message sent by the AP through the transceiver, wherein the first notification message is used for instructing a part of STAs in the STAs to switch from the first channel to the second channel; or

In yet another alternative, the processor 2301 is further configured to: receiving, by the transceiver, a first management frame sent by the AP on the first channel, the first management frame being used by the first group of STAs to determine a connection status with the AP;

receiving, by the transceiver 2303, the AP on the second channel to send a second management frame for the second group of STAs to determine a connection status with the AP.

In yet another alternative, the processor 2301 is further configured to: receiving, by the transceiver 2303, a first trigger frame transmitted by the AP on the first channel, the first trigger frame including the first spectrum allocation information, the first spectrum allocation information being used to instruct the STA to transmit frequency domain resources of third data to the AP; the first trigger frame comprises a first time length, and the first time length is the time for transmitting the third data on the first channel; transmitting the third data to the AP through the transceiver 2303; receiving, by the transceiver 2303, a third response frame of the AP, the third response frame for notifying the STA that the AP has received the third data; or

Receiving, by the transceiver 2303, a second trigger frame sent by the AP on the second channel, where the second trigger frame includes the second spectrum allocation information, the second spectrum allocation information is used to indicate frequency domain resources for the STA to send fourth data to the AP, the second trigger frame includes a second duration, and the second duration is a time for transmitting the fourth data on the second channel, where the first trigger frame and the second trigger frame are used to indicate that a transmission time of the third data on the first channel is the same as a transmission time of the fourth data on the second channel; transmitting the fourth data to the AP through the transceiver 2303; receiving, by the transceiver 2303, a fourth response frame of the AP, the fourth response frame for notifying the STA that the AP has received the fourth data.

The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, a memory and an interface circuit, where the memory, the transceiver and the at least one processor are interconnected by a line, and the at least one memory stores a computer program; the method flow shown in fig. 8 is implemented when the computer program is executed by the processor.

Embodiments of the present application further provide a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed on a processor, the method flow shown in fig. 8 is implemented.

Embodiments of the present application also provide a computer program product, where when the computer program product runs on a processor, the method flow shown in fig. 8 is implemented.

One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments can be implemented by hardware associated with a computer program that can be stored in a computer-readable storage medium, and when executed, can include the processes of the above method embodiments. And the aforementioned storage medium includes: various media that can store computer program code, such as ROM or RAM, magnetic or optical disks, etc.

Claims

1.A method for multi-channel processing, comprising:

2. The method of claim 1, wherein the first preamble comprises first spectrum allocation information indicating frequency domain resources for the first group of STAs to receive the first data, and wherein the second preamble comprises second spectrum allocation information indicating frequency domain resources for the second group of STAs to receive the second data.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

the AP determines the service flow of the first channel and the service flow of the second channel;

4. The method according to any one of claims 1-3, further comprising:

the AP sends a first management frame on the first channel, wherein the first management frame is used for the first group of STAs to determine the connection state with the AP;

5. The method according to any one of claims 1-4, further comprising:

the AP sends a first trigger frame to the first group of STAs on the first channel, wherein the first trigger frame comprises the first spectrum allocation information, the first spectrum allocation information is used for indicating frequency domain resources of third data sent by the first group of STAs to the AP, and the first trigger frame comprises a first duration which is the time for transmitting the third data on the first channel;

6. The method according to any of claims 1-5, wherein the AP sending the first message to the first group of STAs and the second group of STAs comprises:

the AP transmits the first preamble and the first data to the first group of STAs on the first channel and transmits the second preamble and the second data to the second group of STAs on the second channel at the same time, wherein the transmission time of the first preamble and the first data on the first channel is the same as the transmission time of the second preamble and the second data on the second channel.

7. A method for multi-channel processing, comprising:

the STA identifies the first lead code or the second lead code, the first lead code comprises first bandwidth information, the first bandwidth information is configured according to the bandwidth of a first channel occupied by a first group of Stations (STA), the second lead code comprises second bandwidth information, and the second bandwidth information is configured according to the bandwidth of a second channel occupied by a second group of STAs;

the STA receives first data according to the first bandwidth information or receives second data according to the second bandwidth information, the first packet includes the first data and the second data, the first channel and the second channel do not intersect, the sum of the bandwidth of the first channel and the bandwidth of the second channel is less than or equal to the bandwidth supported by the AP, the STA is a first group of STAs or a second group of STAs, the first group of STAs includes at least one STA, and the second group of STAs includes at least one STA;

8. The method of claim 7, wherein the first preamble comprises first spectrum allocation information indicating frequency domain resources for the first group of STAs to receive first data, and wherein the second preamble comprises second spectrum allocation information indicating frequency domain resources for the second group of STAs to receive second data.

9. The method according to claim 7 or 8, characterized in that the method further comprises:

when the difference value between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, receiving a first notification message sent by the AP by a part of the STAs, where the first notification message is used to instruct the part of the STAs to switch from the first channel to the second channel; or

And when the difference value between the service flow of the second channel and the service flow of the first channel is greater than the first threshold, receiving a second notification message sent by the AP by a part of the STAs, wherein the second notification message is used for instructing the part of the STAs to switch from the second channel to the first channel.

10. The method according to any one of claims 7-9, further comprising:

the STA receives a first management frame sent by the AP on the first channel, wherein the first management frame is used for the first group of STAs to determine the connection state with the AP;

11. The method according to any one of claims 7-10, further comprising:

the STA receives, on the first channel, a first trigger frame sent by the AP, where the first trigger frame includes the first spectrum allocation information, the first spectrum allocation information is used to instruct the STA to send frequency domain resources of third data to the AP, and the first trigger frame includes a first duration, where the first duration is a time when the third data is transmitted on the first channel;

the STA sends the third data to the AP;

the STA sends the fourth data to the AP;

12. A multi-channel processing apparatus, comprising:

13. The apparatus of claim 12, wherein the first preamble comprises first spectrum allocation information indicating frequency domain resources for the first group of STAs to receive the first data, and wherein the second preamble comprises second spectrum allocation information indicating frequency domain resources for the second group of STAs to receive the second data.

14. The apparatus of claim 12 or 13, further comprising:

the processing unit is further configured to determine a traffic flow of the first channel and a traffic flow of the second channel;

the communication unit is further configured to send a first notification message to a part of STAs in the first group of STAs when a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, where the first notification message is used to instruct the part of STAs in the first group of STAs to switch from the first channel to the second channel to become the second group of STAs; the sending unit is further configured to send a second notification message to a part of STAs in the second group of STAs when a difference between the traffic flow of the second channel and the traffic flow of the first channel is greater than the first threshold, where the second notification message is used to instruct the part of STAs in the second group of STAs to switch from the second channel to the first channel to become the first group of STAs.

15. The apparatus according to any one of claims 12-14, further comprising:

the communication unit is further configured to send a first management frame on the first channel, where the first management frame is used by the first group of STAs to determine a connection status with the AP;

16. The apparatus according to any one of claims 12-15, further comprising:

the communication unit is further configured to send a first trigger frame to the first group of STAs on the first channel, where the first trigger frame includes the first spectrum allocation information, where the first spectrum allocation information is used to instruct the first group of STAs to send frequency-domain resources of third data to the AP, and the first trigger frame includes a first duration, where the first duration is a time when the third data is transmitted on the first channel;

the communication unit is further configured to send a third response frame to the first group of STAs on the first channel, where the third response frame is used to notify the STAs that the AP has received the third data;

the communication unit is further configured to send a fourth response frame to the second group of STAs on the second channel, where the fourth response frame is used to notify the STAs that the AP has received the fourth data.

17. A multi-channel processing apparatus, comprising:

a processing unit, configured to identify the first preamble or the second preamble, where the first preamble includes first bandwidth information, the first bandwidth information is configured according to a bandwidth of a first channel occupied by a first group of stations STA, the second preamble includes second bandwidth information, and the second bandwidth information is configured according to a bandwidth of a second channel occupied by a second group of stations STA;

18. The apparatus of claim 17, wherein the first preamble comprises first spectrum allocation information indicating frequency domain resources for the first group of STAs to receive first data, and wherein the second preamble comprises second spectrum allocation information indicating frequency domain resources for the second group of STAs to receive second data.

19. The apparatus of claim 17 or 18, further comprising:

the communication unit is further configured to receive a first notification message sent by the AP when a difference between the traffic flow of the first channel and the traffic flow of the second channel is greater than a first threshold, where the first notification message is used to instruct a part of STAs in the first group of STAs to switch from the first channel to the second channel; or

20. The apparatus of any one of claims 17-19, wherein the method further comprises:

the communication unit is further configured to receive, on the first channel, a first trigger frame sent by the AP, where the first trigger frame includes the first spectrum allocation information, and the first spectrum allocation information is used to instruct the first group of STAs to send frequency-domain resources of third data to the AP; the first trigger frame comprises a first time length, and the first time length is the time for transmitting the third data on the first channel;

the communication unit is further configured to send the third data to the AP;

the communication unit is further configured to send the fourth data to the AP;