CN115529659A

CN115529659A - Method and device for triggering transmission power control report, access point and station

Info

Publication number: CN115529659A
Application number: CN202110707672.6A
Authority: CN
Inventors: 顾祥新
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-12-27
Anticipated expiration: 2041-06-24

Abstract

The embodiment of the application discloses a method and a device for triggering a transmission power control report, an access point and a site; the method comprises the following steps: an access point sends a trigger frame, wherein the trigger frame is used for triggering M stations to simultaneously feed back and send a power control report, and the value of M is an integer greater than or equal to 1; the station acquires the trigger frame. At least one (M) site can be triggered to simultaneously feed back the transmission power control report through one trigger frame, and the sites do not need to feed back one transmission power control report one by one, so that the resource overhead is favorably reduced, and the information transmission efficiency is improved.

Description

Method and device for triggering transmission power control report, access point and station

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for triggering a transmission power control report, an access point, and a station.

Background

The Institute of Electrical and Electronics Engineers (IEEE) organization enacts IEEE802.11 series of protocol standards for Wireless Local Access Networks (WLANs) to involve related Transmit Power Control (TPC) mechanisms.

If a station (AP STA, also referred to as AP or AP for short) of an access point sends a TPC request frame (TPC request frame) to a station (non-AP STA, also referred to as STA or AP for short) of a non-access point, where the TPC request frame may request the station to report information such as link margin (linkmarkin), the station may feed back a TPC report frame (TPC report frame) to the access point, so that the access point may know information such as link margin of the station through the TPC report frame, so that the access point may control its own sending power, adjust a transmission resource bandwidth, or select a Modulation and Coding Scheme (MCS) through the information such as link margin.

Currently, the IEEE802.11ax protocol standard supports multi-user operation of DL (downlink) and UL (uplink), that is, data transmission between an access point and multiple stations is simultaneously achieved through DL OFDMA (orthogonal frequency division multiple access), UL OFDMA, DL MU-MIMO (multi-user multiple-input-multiple-output) and UL MU-MIMO. When data transmission is started initially or after data transmission is not performed for a certain period of time, the access point needs to acquire information such as link margins of a plurality of stations. However, the process of acquiring the information by the access point can only send one TPC request frame to the stations of the plurality of stations one by one, and then the plurality of stations feed back one TPC report frame one by one, thereby causing the problems of large resource overhead, low information transmission efficiency, and the like.

Disclosure of Invention

The embodiment of the application provides a method and a device for triggering a transmission power control report, an access point and a station, so that at least one station is expected to simultaneously feed back the transmission power control report through one trigger frame, thereby being beneficial to reducing resource overhead and improving information transmission efficiency.

In a first aspect, an embodiment of the present application provides a method for triggering a transmission power control report, including:

an access point sends a trigger frame, wherein the trigger frame is used for triggering M stations to feed back and send a power control report at the same time, and the value of M is an integer greater than or equal to 1.

In a second aspect, an embodiment of the present application provides a method for triggering a transmission power control report, including:

the method comprises the steps that a station acquires a trigger frame, wherein the trigger frame is used for triggering M stations to feed back and send a power control report at the same time, and the value of M is an integer greater than or equal to 1.

In a third aspect, an embodiment of the present application provides a device for triggering a transmission power control report, where the device includes a processing unit and a communication unit, and the processing unit is configured to:

and sending a trigger frame through the communication unit, wherein the trigger frame is used for triggering M sites to simultaneously feed back and send a power control report, and the value of M is an integer greater than or equal to 1.

In a fourth aspect, an embodiment of the present application provides a device for triggering a transmission power control report, where the device includes a processing unit and a communication unit, where the processing unit is configured to:

and receiving a trigger frame through the communication unit, wherein the trigger frame is used for triggering M sites to simultaneously feed back and send a power control report, and the value of M is an integer greater than or equal to 1.

In a fifth aspect, embodiments of the present application provide an access point, comprising a processor, a memory, a communication interface, and one or more programs, wherein the at least one program is stored in the memory and configured to be executed by the processor, the at least one program comprising instructions for performing the steps in the first aspect of embodiments of the present application.

In a sixth aspect, embodiments of the present application provide a station, including a processor, a memory, a communication interface, and at least one program, where the at least one program is stored in the memory and configured to be executed by the processor, and the at least one program includes instructions for performing the steps in the second aspect of embodiments of the present application.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program and data for electronic data exchange, where the computer program and data cause a computer to perform some or all of the steps described in the first aspect or the second aspect of the embodiments of the present application.

In an eighth aspect, embodiments of the present application provide a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the first aspect or the second aspect of embodiments of the present application. The computer program may be a software installation package.

It can be seen that an access point sends a trigger frame, where the trigger frame is used to trigger M stations to simultaneously feed back a transmission power control report, and a value of M is an integer greater than or equal to 1; the station acquires the trigger frame. At least one (M) site can be triggered to simultaneously feed back the transmission power control report through one trigger frame, and the sites do not need to feed back one transmission power control report one by one, so that the resource overhead is favorably reduced, and the information transmission efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a frame structure of a trigger frame according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a frame structure of a common information field in a trigger frame according to an embodiment of the present application;

fig. 4 is a schematic diagram of a frame structure of a user information field in a trigger frame according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating stations feeding back one TPC report frame after another according to an embodiment of the present application;

fig. 6 is a flowchart illustrating a method for triggering a transmission power control report according to an embodiment of the present application;

fig. 7 is a schematic diagram illustrating that a trigger frame triggers multiple stations to simultaneously feed back a TPC report according to an embodiment of the present application;

fig. 8 is a block diagram illustrating functional units of a device for triggering a transmission power control report according to an embodiment of the present disclosure;

fig. 9 is a block diagram of functional units of another apparatus for triggering a transmission power control report according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an access point according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a station provided in an embodiment of the present application.

Detailed Description

In order to better understand the technical solutions of the present application for those skilled in the art, the technical solutions in the embodiments of the present application are described below with reference to the drawings in the embodiments of the present application. It should be apparent that the embodiments described are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort with respect to the embodiments in the present application belong to the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, software, product, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements recited, but may also include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection, so as to implement communication between devices, and is not limited in any way. In the embodiments of the present application, the expression "network" and "system" refers to the same concept, and a communication system is a communication network.

The embodiment of the application can be applied to a Wireless Local Area Network (WLAN). Currently, the protocol standards adopted by WLANs are the IEEE802.11 family. The WLAN may include a plurality of Basic Service Sets (BSSs), and devices in the BSS may include an access point station (AP STA, also referred to as AP or access point) and a non-access point station (non-AP STA, also referred to as STA or station). In addition, each basic service set may include one access point and at least one station.

In particular, an access point may be an entity that provides network access to stations connected thereto via a wireless medium. The access point may access the ethernet for each wireless network client. The access point may be a network device of a wireless fidelity (Wi-Fi) chip. The access point may be a device that supports various IEEE802.11 protocol standards. For example, an access point may support devices of IEEE802.11 ac, IEEE802.11 n, IEEE802.11 g, IEEE802.11b, IEEE802.11ax, IEEE802.11be, a next generation WLAN protocol standard, and so forth. An access point may include a centralized controller, a Base Station (BS), a Base Transceiver Station (BTS), a site controller, a switch, and the like.

Further, the access point may include a device, such as a system-on-chip, that provides wireless communication capabilities for the station. The chip system may include a chip, and may further include other discrete devices, such as a transceiver device.

Further, the access point may communicate with an Internet Protocol (IP) network. Such as the internet (internet), a private IP network, or other data network, etc.

Specifically, the station may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example, a User Equipment (UE) supporting Wi-Fi communication functions, a remote/remote terminal (remote UE), an access terminal, a subscriber unit, a subscriber station, a mobile device, a user terminal, a smart terminal, a wireless communication device, a user agent or user equipment/cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device, a vehicle-mounted device, a wearable device, and the like, without specific limitation.

Further, stations may include non-access point enhanced high throughput stations (non-AP EHT STAs), non-access point high efficiency stations (non-AP high efficiency STAs), and so on.

Further, the station may include a device having a transmitting and receiving function, such as a system-on-chip. The chip system may include a chip, and may further include other discrete devices, such as a transceiver device.

In conjunction with the above description, the following embodiments of the present application provide an exemplary illustration of a wireless communication system with access points and stations in a basic service set.

For an exemplary wireless communication system according to an embodiment of the present application, please refer to fig. 1. Wireless communication system 10 may include an access point 110, a station 120, and a station 130. Access point 110 may provide communication coverage for a particular geographic area and may communicate with

stations

120 and 130 located within communication coverage, among other things.

Optionally, the wireless communication system 10 may further include a plurality of access points, and each access point may include a certain number of stations within a communication coverage area, which is not particularly limited.

Optionally, the wireless communication system 10 may further include other network entities such as a Radio Access Network (RAN) device, a Core Network (CN) device, a network controller, a mobility management entity, and the like, which is not limited in this respect.

Alternatively, the communication between the access point and the station in the wireless communication system 10 may be wireless communication or wired communication, which is not particularly limited.

The following describes related contents related to the technical solution of the present application.

1. Trigger Frame (Trigger Frame, TF)

The trigger frame belongs to a Media Access Control (MAC) frame. As shown in fig. 2, the Frame structure (Frame Format) of the trigger Frame may include a Frame Control (FC) field (or field), a Duration (Duration) field, a Receiver Address (RA) field, a Transmitter Address (TA) field, a Common Information (Common Info) field, at least one User Information (User Info) field, a Padding (Padding) field, and a Frame Check Sequence (FCs) field.

It should be noted that different IEEE802.11 protocol standards may have different specifications for the fields carried by the trigger frame.

The RA field may indicate a receiver address of the trigger frame. The RA field may indicate a MAC address of a station when a trigger frame needs to trigger the station to transmit data. The RA field may indicate a broadcast address when the trigger frame needs to trigger at least one station to transmit data.

The TA field may indicate the transmitter address of the trigger frame. The TA field may indicate the MAC address of the access point that sent the trigger frame when the access point does not use multiple BSSIDs.

The common information field may indicate information that at least one station triggered by the trigger frame needs to read.

The user information field may respectively indicate information required for each of a plurality of stations triggered by the trigger frame to transmit a response to the trigger frame. In particular, the trigger frame may include at least one user information field.

The user information field may indicate a station triggered by the trigger frame. That is, the user information field has a correspondence with the site. When the user information field includes Association Identifier (AID) information, a station indicated by the AID information may be a station triggered by a trigger frame or a station corresponding to the user information field. For example, the AID12 subfield in the user information field may indicate 12 Least Significant Bits (LSBs) of the AID of the station triggered by the trigger frame.

The user information field may indicate a Resource Unit (RU) allocated to a station triggered by the trigger frame. Wherein the RU may indicate a plurality of subcarriers for uplink and downlink transmissions. In addition, an RU allocation subfield (RU allocation subfield) in the user information field may indicate a starting RU of one or more consecutive RUs allocated by the user information field.

The padding field may include padding bits. The padding field may be used to ensure that a station transmitting a response frame to the trigger frame is ready for transmission of the response frame. Therefore, the length of the padding field may be determined according to the capability of a station transmitting a response frame for the trigger frame. In addition, the trigger frame may not include a padding field.

The access point may use the trigger frame to trigger the station to perform data transmission, such as data transmission of an uplink, and data transmission of a point-to-point (P2P) link. In the uplink data transmission, it can be understood that a station transmits data to an access point; data transmission of a P2P link may be understood as a station transmitting data to another station over the P2P link.

2. Type of trigger frame

A trigger type subfield (trigger type subfield) in a common information field of a trigger frame may indicate a type of the trigger frame. For example, in table 1, if the value of the trigger type subfield is set to 1, the type of the trigger frame is BFRP, that is, the trigger frame is a BFRP trigger frame; if the value of the trigger type subfield is set to 4, the type of the trigger frame is BSRP, that is, the trigger frame is a BSRP trigger frame.

3. Frame structure of common information field in trigger frame

As shown in fig. 3, the frame structure of the common information field in the trigger frame includes: ext>ext> aext>ext> Triggerext>ext> Typeext>ext> (ext>ext> Triggerext>ext> Typeext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> anext>ext> uplinkext>ext> Lengthext>ext> (ext>ext> ULext>ext> Lengthext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> Moreext>ext> TFext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> Requiredext>ext> carrierext>ext> senseext>ext> (ext>ext> CSext>ext> Requiredext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> anext>ext> uplinkext>ext> bandwidthext>ext> (ext>ext> ULext>ext> BWext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> guardext>ext> intervalext>ext> +ext>ext> longext>ext> trainingext>ext> sequenceext>ext> Typeext>ext> (ext>ext> GIext>ext> Andext>ext> LTFext>ext> Typeext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> MUext>ext> -ext>ext> MIMOext>ext> highext>ext> efficiencyext>ext> LTFext>ext> Modeext>ext> (ext>ext> MUext>ext> -ext>ext> MIMOext>ext> HEext>ext> -ext>ext> LTFext>ext> Modeext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> HEext>ext> -ext>ext> LTFext>ext> Symbolext>ext> Numberext>ext> Andext>ext> Midambleext>ext> periodext>ext> (ext>ext> Numberext>ext> ofext>ext> HEext>ext> -ext>ext> LTFext>ext> Symbolsext>ext> Andext>ext> Midambleext>ext> Periodicityext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> anext>ext> uplinkext>ext> STBCext>ext> (ext>ext> ULext>ext> STBCext>ext>)ext>ext>,ext>ext> anext>ext> LDPCext>ext> Extraext>ext> Symbolext>ext> portionext>ext> (ext>ext> LDPCext>ext> Extraext>ext> Symbolext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> anext>ext> APext>ext> transmitext>ext> Powerext>ext> (ext>ext> APext>ext> Txext>ext> Powerext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> packetext>ext> spreadingext>ext> ambiguityext>ext> (ext>ext> PEext>ext> diversityext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> anext>ext> uplinkext>ext> Spatialext>ext> multiplexingext>ext> (ext>ext> ULext>ext> spaceext>ext>)ext>ext> reservedext>ext> infoext>ext>,ext>ext> aext>ext> Dopplerext>ext> (ext>ext> Dopplerext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> anext>ext> uplinkext>ext> -ext>ext> SIGext>ext> -ext>ext> Aext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> aext>ext> SIGext>ext>,ext>ext> commonext>ext> Triggerext>ext> frameext>ext> relatedext>ext> informationext>ext> (ext>ext> commonext>ext>)ext>ext> subext>ext> -ext>ext> fieldext>ext>,ext>ext> Andext>ext> theext>ext> likeext>ext>.ext>ext>

TABLE 1

4. Frame structure of user information field in trigger frame

As shown in fig. 4, the frame structure of the user information field in the trigger frame includes: an association identifier 12 (AID 12) subfield, a resource unit Allocation (RU Allocation) subfield, an uplink forward error correction code Coding Type (UL FEC Coding Type) subfield, an uplink high efficiency modulation and Coding strategy (UL HE-MCS) subfield, an uplink DCM subfield, an SS Allocation/RA-RU Information (SS Allocation/RA-RU Information) subfield, an uplink Target received Power (UL Target Receive Power) subfield, a Reserved (Reserved) subfield, a common Information related to Trigger frame types (Trigger Dependent User Info) subfield, and the like.

5. Link margin (link margin), transmit power (transmit power) information, and power headroom (power headroom)

Link margin: may be defined as a ratio (ratio) of a reception power of a reception signal of a reception side to a minimum reception power required by the reception side.

Transmission power information: may be defined as the transmission power of the receiver/transmitter transmission signal.

Power headroom: may be defined as a transmission power capability (transmit power capability) of a transmitter and a decibel (dB) difference of a transmission power of a signal transmitted by the transmitter.

In WLAN wireless communication, both the transmitter and the receiver need to know the (reception) link margin/transmission power information/(transmission) power margin of the other party, and can perform their own transmission power control, radio resource bandwidth adjustment, modulation and Coding Scheme (MCS) selection, and the like, using the link margin/transmission power information/(transmission) power margin. Wherein,

(1) The transmitting side may control its own transmission power, adjust a radio resource bandwidth, or select an MCS according to a link margin of the receiving side. When the link margin is larger in the forward direction, the sender can reduce the sending power of the sender, increase the wireless resource bandwidth or select a higher-order MCS;

(2) If the access point needs to schedule downlink transmission to the station, the access point can control the self transmission power, allocate more reasonable downlink wireless resource bandwidth or select more reasonable MCS according to the link margin of the station. When the link margin is larger in the forward direction, the access point can reduce the transmission power of the access point, allocate larger downlink wireless resource bandwidth or adopt a higher-order MCS;

(3) If the access point needs to schedule uplink transmission to the station, the access point may allocate a more reasonable uplink wireless resource bandwidth or select a more reasonable MCS according to the link margin of the station and the transmission power information of the station. The access point may determine a path loss (path loss) according to the transmission power information of the station and the reception power of the access point receiving signal, so as to allocate a more reasonable uplink wireless resource bandwidth through the path loss or select a more reasonable MCS.

In addition, the link margin may be obtained initially through a link measurement request frame (link measurement request frame)/a link measurement report frame (link measurement report frame), a TPC request frame/a TPC report frame; the way to initially acquire the transmission power information may be through a TPC request frame/TPC report frame. In the transmission process, the link margin or the transmission power information and the like can be continuously updated through the MAC header.

6. Transmission power adaptation (transmit power adaptation)

A station may dynamically adjust transmit power for transmitting a media access control protocol data unit (MPDU) to another station through path loss and estimation of link margin.

The access point may dynamically adjust the transmit power used to transmit data to the stations through path loss and link margin estimates.

The access point may request the station to feed back (respond to) a TPC report frame using the TPC request frame, which carries link margin and transmit power information. Wherein, the transmission power field of the TPC report frame is used for indicating the transmission power information, and the link margin field of the TPC report frame is used for indicating the estimated link margin.

Currently, the IEEE802.11ax protocol standard supports DL and UL multi-user operation, i.e., data transmission between an access point and multiple stations is realized through DL OFDMA, UL OFDMA, DL MU-MIMO and UL MU-MIMO. When data transmission is started initially or after data transmission is not performed for a certain period of time, the access point needs to acquire information such as link margins of a plurality of stations. However, the process of acquiring the information by the access point can only send one TPC request frame to the stations of the plurality of stations one by one, and then the plurality of stations feed back one TPC report frame one by one, thereby causing the problems of large resource overhead, low information transmission efficiency, and the like.

For example, as shown in fig. 5, the access point 501 sends a TPC request frame 511 to the station 502, and then the station 502 feeds back a TPC report frame 513. Then, the access point 501 sends a TPC request frame 521 to the station 503, and the station 503 feeds back a TPC report frame 523. Since the access point 501 needs to send TPC request frames to the station 502 and the station 503 one by one, resource overhead is large, information transmission efficiency is low, and the like.

In conjunction with the above description, an embodiment of the present application provides a flowchart of a method for triggering a transmission power control report, please refer to fig. 6, where the method includes:

s610, an access point sends a trigger frame, wherein the trigger frame is used for triggering M sites to simultaneously feed back and send a power control report, and the value of M is an integer greater than or equal to 1.

Wherein, the simultaneous feedback (or simultaneous transmission) may be used to indicate that some or all of the M stations feedback to transmit the power control report on the same time domain resource, where the time domain resource is indicated by the trigger frame.

It should be noted that, the time domain resource for some or all of the M stations to feed back (or send) the TPC report is indicated by the trigger frame. The trigger frame may indicate the same time domain resource, so that the M stations may simultaneously feed back (or simultaneously send) TPC reports.

And S620, the station acquires the trigger frame.

It should be noted that the IEEE802.11ax protocol standard supports DL and UL multi-user operation, that is, data transmission between an Access Point (AP) and multiple Stations (STAs) is realized through DL OFDMA, UL OFDMA, DL MU-MIMO and UL MU-MIMO. In the process that the access point needs to acquire information such as link margins of a plurality of stations, the access point can only send one TPC request frame to each station of the plurality of stations, and then the stations of the plurality of stations feed back one TPC report frame one by one, so that the problems of high resource overhead, low information transmission efficiency and the like are caused.

Based on this, compared with the situation that the access point sends one TPC request frame to the sites one by one, the access point of the present application can send one trigger frame, and the trigger frame can be used for triggering M (M is greater than or equal to 1) sites to simultaneously feed back a transmission power control report (TPC report), so that at least one site simultaneously feeds back the transmission power control report through one trigger frame, and further, resource overhead is favorably reduced, and information transmission efficiency is improved.

Illustratively, as shown in fig. 7, the access point 701 transmits a trigger frame 711, and the trigger frame 711 is used for triggering the station 702 and the station 703 to simultaneously feed back a TPC report frame. Then, the station 702 acquires the trigger frame 711, and feeds back the TPC report frame 712 on the uplink resource allocated by the trigger frame 711. Meanwhile, the station 703 acquires the trigger frame 711, and feeds back the TPC report frame 713 on the uplink resource allocated by the trigger frame 711. After the access point 701 acquires the TPC report frame 712 and the TPC report frame 713, the access point 701 feeds back a Block Ack (BA) frame to the station 702 and the station 703. Finally, the access point 701 sends a trigger frame 721, where the trigger frame 721 is used to trigger the stations 702 and 703 to transmit uplink data, so that the station 702 transmits the uplink data 722 on the uplink resource allocated by the trigger frame 721, and the station 703 transmits the uplink data 723 on the uplink resource allocated by the trigger frame 721.

In conjunction with the above description, each will be specifically described below.

Specifically, the transmission power control report may carry at least one of: link margin information, transmission power information, and power margin information; the link margin information is used for indicating the ratio of the receiving power of the first station for receiving the trigger frame to the minimum receiving power required by the first station; transmitting power information for indicating the transmitting power of the first station feedback transmitting power control report; power headroom information, which is used for representing the sending power capability of the first station and the decibel difference value of the sending power of the first station feedback sending power control report; the first site is at least one site of the M sites.

It should be noted that, in the WLAN wireless communication of the present application, if an access point needs to acquire link margin information of at least one station (i.e., a first station) of M stations, the access point may send a trigger frame to the first station, where the trigger frame may trigger the first station to simultaneously feed back a TPC report carrying the link margin information, so that the access point may acquire the link margin information through the TPC report, and further perform, through the link margin information, transmit power control, radio resource bandwidth adjustment, or Modulation and Coding Scheme (MCS) selection of itself. If the link margin information is larger in the forward direction, it indicates that the receiving power of the first station for receiving the trigger frame is larger in the forward direction than the minimum receiving power required by the first station, so that the access point can reduce its own transmitting power, increase the wireless resource bandwidth, or select a higher-order MCS.

Similarly, in the WLAN wireless communication of the present application, if an access point needs to acquire the transmission power information of at least one station (i.e., a first station) of M stations, the access point may send a trigger frame to the first station, where the trigger frame may trigger the first station to simultaneously feed back a TPC report carrying the transmission power information, so that the access point may acquire the transmission power information through the TPC report. Then, the access point may determine path loss (path loss) information through the transmit power information and the receive power of the TPC report received by the access point, where the path loss information is used to indicate a (decibel) difference between the transmit power information of the TPC report fed back by the first station and the receive power of the TPC report received by the access point, and thus the access point may allocate a more reasonable uplink radio resource bandwidth to the first station or select a more reasonable MCS through the path loss information.

Each of the M stations has a certain transmission power capability (transmit power capability). Wherein, the access point can acquire the transmission power capability of the station in the initial connection establishment process (such as association process) with the station. Therefore, in the WLAN wireless communication of the present application, if an access point needs to know power headroom information of at least one station (i.e., a first station) of M stations, the access point may send a trigger frame to the first station, where the trigger frame may trigger the first station to simultaneously feed back a TPC report carrying the power headroom information, so that the access point may obtain the power headroom information through the TPC report.

Specifically, if the transmission power capability of the first station is affected, the transmission power control report carries the power headroom information.

Wherein the affected transmit power capability of the first station may comprise at least one of: the transmission power capability of the first station is affected due to overheating of the device to which the first station belongs, and the transmission power capability of the first station is affected due to sharing (power sharing) of the transmission power capability by the wireless communication modules of the devices to which the first station belongs, except for the first station.

It should be noted that, when the transmission power capability of at least one station (i.e., a first station) of the M stations is affected (or changed), a TPC report fed back by the first station to the access point may carry power headroom information, so that the access point may determine whether the transmission power capability of the first station is affected (or changed) through the power headroom information and the transmission power information, and support a scenario in which a certain factor affects the transmission power capability of the first station.

In addition, in an access point Multi-Link Device (AP MLD) or a non-access point Multi-Link Device (non-AP MLD), one Multi-Link Device (MLD) may include (integrate) at least one access point, at least one station, at least one wireless communication module, and the like. Wherein the wireless communication module may include at least one of: a mobile communication (e.g., 2G/3G/4G/5G mobile communication) module, a Wireless Local Area Network (WLAN) communication module, a Bluetooth (Bluetooth) communication module, a wireless fidelity (Wi-Fi) communication module, a Zigbee (Zigbee) communication module, a Near Field Communication (NFC) communication module, an Ultra Wide Band (UWB) communication module, and a visible light (Li-Fi) communication module.

Based on this, the device to which the first station belongs in this application may be understood as a multi-link device. Wherein the multi-link device may comprise (integrate) the first station and other wireless communication modules than the first station. If the device to which the first station belongs is overheated, the transmission power capability of the first station may be affected; alternatively, if the wireless communication modules of the devices to which the first station belongs, except for the first station, share the transmission power capability, the transmission power capability of the first station may be affected.

It can be seen that the present application analyzes factors affecting the transmission power capability of the first station so as to support a scenario where certain factors affect the transmission power capability of the first station. Meanwhile, the access point can acquire whether the sending power capability of the station is affected (or changed) by carrying the power margin information through the TPC report, so that corresponding adjustment is performed to improve the robustness and stability of the system.

Specifically, the trigger frame may include at least one of: a common information field, at least one user information field; the common information field may contain information for triggering M stations to simultaneously feedback and transmit a power control report; or, the user information field may contain information for triggering the M stations to simultaneously feedback and transmit the power control report; or, the common information subfield related to the trigger frame type in the common information field may contain information for triggering the M stations to simultaneously feed back the transmission power control report; alternatively, the user information subfield related to the trigger frame type in the user information field may contain information for triggering the M stations to simultaneously feedback the transmission power control report.

It should be noted that, as can be seen from fig. 2, the frame structure of the trigger frame may include a common information field and at least one user information field. In order to ensure consistency between frame structures of trigger frames specified by each WLAN protocol standard and to trigger M stations to simultaneously feed back a TPC report, the frame structure of the trigger frame needs to be modified.

In order to implement triggering of M stations to simultaneously feed back a TPC report, while ensuring that a frame structure of a modified trigger frame is compatible or consistent with a frame structure of other trigger frames (trigger frames of the same type or different types defined by different protocol versions), the modified trigger frame needs to include (carry or carry) information for triggering the M stations to simultaneously feed back a TPC report, where the information may be included (carried or carried) by a common information field, a user information field, a common information subfield (trigger dependent common info subfield) related to a trigger frame type, a user information subfield (trigger dependent user info subfield) related to a trigger frame type, a reserved subfield in the common information field, or a reserved subfield in the user information field, so that at least one station is implemented to simultaneously feed back a transmission power control report by using a trigger frame including the information, thereby facilitating reduction of resource overhead and improvement of information transmission efficiency.

Specifically, the user information field has a correspondence with a site of the M sites, and the correspondence is indicated by the association identifier information in the user information field.

Wherein the association identifier information may be an association identifier 12 (AID 12) subfield (B0-B11).

It should be noted that, as can be seen from fig. 4, the AID12 subfield in the user information field of the trigger frame of the present application may indicate a station corresponding to the AID12 subfield. For example, as shown in fig. 2, a trigger frame carries M user information fields, where the M user information fields have a certain arrangement order in a frame structure of the trigger frame, and the AID12 subfield of each of the M user information fields indicates a station, that is, the M user information fields are in one-to-one correspondence with the M stations, so as to trigger stations (that is, M stations) that need to simultaneously feed back a TPC report through the trigger frame.

Specifically, some or all of the M stations feedback and transmit the power control report on different resources, where the resources include resource units in a frequency domain or spatial streams in a spatial domain, and the resources are indicated by the trigger frame.

It should be noted that M stations triggered by the trigger frame in the present application may feed back a TPC report in a Resource Unit (RU) on the same time domain resource and a resource unit (spatial stream) on a different frequency domain/spatial domain. As can be seen, the transmission of the TPC report is achieved by the trigger frame indicating the resource unit or spatial stream.

Specifically, the trigger frame may be one of the following: a buffer status report polling trigger frame, a beamforming report polling trigger frame, a newly defined trigger frame.

If the trigger frame is a newly defined trigger frame, the value of the trigger type subfield in the common information field of the trigger frame is set to any one of values 8 to 15.

If the trigger frame is a buffer status report polling trigger frame, the trigger frame is also used for triggering the M sites to simultaneously feed back a buffer status report (buffer status report).

If the trigger frame is a beamforming report polling trigger frame, the trigger frame is also used to trigger the M stations to simultaneously feed back a beamforming report (beamforming report).

It should be noted that, as can be seen from table 1, a trigger type subfield (trigger type subfield) in the common information field of the trigger frame may indicate the type of the trigger frame. If the value of the trigger type subfield is set to 1, the trigger frame is a beamforming report polling (BFRP) trigger frame; if the value of the trigger type subfield is set to 4, the trigger frame is a Buffer Status Report Polling (BSRP) trigger frame; if the value of the trigger type subfield is set to any one of values 8 to 15, the trigger frame is a newly defined trigger frame of the present application.

Therefore, the method and the device realize that at least one station simultaneously feeds back and sends the power control report through the buffer status report polling trigger frame, the beam forming report polling trigger frame or the newly defined trigger frame, thereby being beneficial to reducing the resource overhead and improving the information transmission efficiency.

In addition, the newly defined trigger frame of the present application may be defined as a multi-user transmit power control request (MU-TPC request) frame, and the MU-TPC request frame may be used to trigger at least one station to simultaneously feed back a TPC report. Alternatively, as long as the frame has a function of triggering at least one station to simultaneously feed back a TPC report, the frame may be a trigger frame of the present application, and is not particularly limited.

Secondly, the BSRP trigger frame may be used to collect the amount of data to be sent in the buffer of the station for subsequent use in uplink transmission scheduling. Therefore, the BSRP trigger frame needs to be modified, so that the modified BSRP trigger frame can be used to trigger M sites to simultaneously feed back a TPC report and a buffer status report. Wherein the TPC report carries at least one of: link margin information, transmission power information, and power margin information, and the buffer status report carries information of the amount to be transmitted in the buffer of at least one of the M stations.

For example, as can be seen from fig. 3, the modified BSRP trigger frame may indicate, through a reserved subfield (e.g. B63) in the common information field, that M stations triggered by the BSRP trigger frame feed back the TPC report at the same time as feeding back the buffer status report on the allocated uplink resource. The buffer status report may be carried by a data frame (data frame), the TPC report may be carried by an action frame (action frame), and both may be aggregated into a medium access control protocol data unit (a-MPDU) frame.

Finally, the BFRP trigger frame may be used to collect precoding information needed for beam transmission to the station for subsequent use in DL MU-MIMO (downlink multi-user-multiple input multiple output) transmission. Therefore, the BFRP trigger frame needs to be modified, so that the modified BFRP trigger frame can be used to trigger M stations to simultaneously feed back a TPC report and a beamforming report. Wherein the TPC report carries at least one of: link margin information, transmission power information, and power margin information, and the beamforming report carries information of precoding information required for beam transmission to at least one of the M stations.

For example, as can be seen from fig. 3, the modified BFRP trigger frame may indicate, through a reserved subfield (e.g., B63) in the common information field, that the M stations triggered by the BFRP trigger frame feed back the TPC report at the same time as feeding back the beamforming report on the allocated uplink resource.

Optionally, if the trigger frame is a buffer status report polling trigger frame, the feedback transmission power control report is carried by an action frame (action frame), and the feedback buffer status report is carried by a data frame (data frame); wherein the action frame and the data frame are aggregated in an A-MPDU frame.

It should be noted that the action frame belongs to one of management frames (magagement frames), and the TPC report may be carried by the action frame in the present application. Meanwhile, the action frame and the data frame are aggregated in the A-MPDU, so that the system throughput is improved.

The above description has been directed primarily to the embodiments of the present application from a method-side perspective. It will be appreciated that the access point or station, in order to carry out the above-described functions, may comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art would appreciate that the various illustrative methods, modules, units, or algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or in combination with computer software. Whether a method, function, module, element, or step is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the technical solution. A person skilled in the art may use different methods to implement the described methods, functions, modules, units or steps for each specific application, but such implementation should not be considered as beyond the scope of the present application.

The embodiment of the present application may perform functional unit/module division on an access point or a station according to the above method example. For example, each functional unit/module may be divided for each function, or two or more functions may be integrated into one functional unit/module. The integrated functional units/modules may be implemented in a hardware manner or a software program manner. It should be noted that, in the embodiment of the present application, the division of the functional units/modules is schematic, and only one logical function division is used, and there may be another division manner in actual implementation.

In the case of integrated units/modules, fig. 8 provides a block diagram of the functional units of a transmit power control report triggering apparatus. The transmission power control report triggering apparatus 800 includes: a processing unit 802 and a communication unit 803. The processing unit 802 is configured to control and manage actions of an access point. For example, the processing unit 802 is configured to support the access point to perform the steps in fig. 6 and other processes for the technical solutions described herein. The communication unit 803 is used to support communication between the access point and other devices in the wireless communication system. The transmission power control report triggering device 800 may further comprise a memory unit 801 for program codes executed by the transmission power control report triggering device 800 and transmitted data.

It should be noted that the transmission power control report trigger device 800 may be a chip or a chip module.

The processing unit 802 may be a processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. Processing unit 802 can also be a combination that performs computing functions, e.g., a combination comprising one or more microprocessors, a DSP, a microprocessor, or the like. The communication unit 803 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 801 may be a memory. When the processing unit 802 is a processor, the communication unit 803 is a communication interface, and the storage unit 801 is a memory, the transmission power control report trigger apparatus 800 according to the embodiment of the present application may be an access point shown in fig. 10.

Specifically, the processing unit 802 is configured to perform any step performed by the access point in the method embodiment described above, and when performing data transmission such as sending, optionally invokes the communication unit 803 to complete the corresponding operation. The details will be described below.

The processing unit 802 is configured to: and sending a trigger frame, wherein the trigger frame is used for triggering M sites to simultaneously feed back a sending power control report, and the value of M is an integer greater than or equal to 1.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 8 may be detailed in the description of the method embodiment shown in fig. 6, and is not described herein again.

It can be seen that the apparatus for triggering a sending power control report 800 sends a trigger frame, where the trigger frame is used to trigger M sites to simultaneously feed back a sending power control report, so that at least one site simultaneously feeds back a sending power control report through one trigger frame, which is favorable for reducing resource overhead and improving information transmission efficiency.

Specifically, the transmission power control report carries at least one of the following: link margin information, transmission power information, power margin information; the link margin information is used for indicating the ratio of the receiving power of the first station for receiving the trigger frame to the minimum receiving power required by the first station; transmitting power information for indicating the transmitting power of the first station feedback transmitting power control report; power headroom information, which is used for representing the sending power capability of the first station and the decibel difference value of the sending power of the first station feedback sending power control report; the first site is at least one site of the M sites.

Specifically, the affected transmission power capability of the first station includes at least one of: the transmission power capability of the first station is affected due to overheating of the device to which the first station belongs, and the transmission power capability of the first station is affected due to sharing of the transmission power capability by the wireless communication modules of the devices to which the first station belongs, except for the first station.

Specifically, the trigger frame includes at least one of: a common information field, at least one user information field; the common information field comprises information for triggering M sites to simultaneously feed back and send a power control report; or, the user information field contains information for triggering the M stations to simultaneously feed back and send the power control report; or, a common information subfield related to the trigger frame type in the common information field contains information for triggering the M stations to simultaneously feed back and send the power control report; or, the user information subfield related to the trigger frame type in the user information field contains information for triggering the M stations to simultaneously feed back the transmission power control report.

Specifically, the simultaneous feedback is used to indicate that some or all of the M stations feed back the transmission power control report on the same time domain resource, and the time domain resource is indicated by the trigger frame.

Specifically, some or all of the M stations feedback and send power control reports on different resources, where the resources include resource units in a frequency domain or spatial streams in a spatial domain, and the resources are indicated by a trigger frame.

Specifically, the trigger frame is one of the following: a buffer status report polling trigger frame, a beamforming report polling trigger frame, a newly defined trigger frame.

Specifically, if the trigger frame is a newly defined trigger frame, the value of the trigger type subfield in the common information field of the trigger frame is set to any one of values 8 to 15.

Specifically, if the trigger frame is a buffer status report polling trigger frame, the trigger frame is also used for triggering the M stations to simultaneously feed back the buffer status report.

Specifically, if the trigger frame is a beamforming report polling trigger frame, the trigger frame is also used to trigger the M stations to simultaneously feed back a beamforming report.

In the case of integrated units/modules, fig. 9 provides a block diagram of the functional units of yet another transmit power control report triggering apparatus. The transmission power control report triggering apparatus 900 includes: a processing unit 902 and a communication unit 903. The processing unit 902 is used for controlling and managing the actions of the station. For example, the processing unit 902 is used to support the station to perform the steps in fig. 6 and other processes for the solution described in the present application. The communication unit 903 is used to support communication between a station and other devices in the wireless communication system. The transmission power control report triggering device 900 may further include a storage unit 901 for storing program codes executed by the transmission power control report triggering device 900 and transmitted data.

It should be noted that the transmission power control report trigger device 900 may be a chip or a chip module.

The processing unit 902 may be a processor or a controller, such as a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processing unit 902 may also be a combination of computing functions, e.g., comprising one or more microprocessors, a combination of DSPs and microprocessors, or the like. The communication unit 903 may be a communication interface, a transceiver, a transmitting and receiving circuit, or the like, and the storage unit 1501 may be a memory. When the processing unit 902 is a processor, the communication unit 903 is a communication interface, and the storage unit 901 is a memory, the transmission power control report triggering apparatus 900 according to the embodiment of the present application may be a station shown in fig. 11.

In a specific implementation, the processing unit 902 is configured to perform any step performed by a station in the above method embodiment, and when performing data transmission, such as sending, the communication unit 903 may be optionally invoked to complete the corresponding operation. The details will be described below.

The processing unit 902 is configured to: and acquiring a trigger frame, wherein the trigger frame is used for triggering M stations to simultaneously feed back and send a power control report, and the value of M is an integer greater than or equal to 1.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 9 may be detailed in the description of the method embodiment shown in fig. 6, and is not described herein again.

It can be seen that the apparatus for triggering a transmission power control report 900 obtains the trigger frame, and the trigger frame is used for triggering M stations to simultaneously feed back a transmission power control report, so that at least one station simultaneously feeds back a transmission power control report through one trigger frame, which is favorable for reducing resource overhead and improving information transmission efficiency.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an access point according to an embodiment of the present disclosure. The access point 1000 includes a processor 1010, a memory 1020, a communication interface 1030, and a communication bus for connecting the processor 1010, the memory 1020, and the communication interface 1030.

The memory 1020 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 1020 is used for storing program codes executed by the access point 1000 and data transmitted.

The communication interface 1030 is used for receiving and transmitting data.

Processor 1010 may be one or more CPUs. In the case where the processor 1010 is a single CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 1010 in the access point 1000 is configured to read at least one program 1021 stored in the memory 1020, and perform the following operations: and sending a trigger frame, wherein the trigger frame is used for triggering M stations to simultaneously feed back a sending power control report, and the value of M is an integer greater than or equal to 1.

It should be noted that the specific implementation of each operation may adopt the corresponding description of the method embodiment shown in fig. 6, and the access point 1000 may be configured to execute the method on the access point side of the method embodiment of the present application, which is not described herein again in detail.

Specifically, if the trigger frame is a buffer status report polling trigger frame, the trigger frame is also used for triggering the M stations to feed back the buffer status report.

Specifically, if the trigger frame is a beamforming report polling trigger frame, the trigger frame is also used to trigger the M stations to feed back a beamforming report.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a station according to an embodiment of the present disclosure. The station 1100 includes a processor 1110, a memory 1120, a communication interface 1130, and a communication bus connecting the processor 1110, the memory 1120, and the communication interface 1130.

The memory 1120 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 1120 is used for storing program codes executed by the station 1100 and data transmitted.

The communication interface 1130 is used to receive and transmit data.

Processor 1110 may be one or more CPUs. In the case where the processor 1110 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 1110 in the station 1100 is configured to read at least one program 1121 stored in the memory 1120 and perform the following operations: and acquiring a trigger frame, wherein the trigger frame is used for triggering M stations to simultaneously feed back and send a power control report, and the value of M is an integer greater than or equal to 1.

It should be noted that specific implementation of each operation may adopt corresponding description of the method embodiment shown in fig. 6, and the station 1100 may be configured to execute a method on the station side of the method embodiment of the present application, which is not described herein again in detail.

Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program and data for electronic data exchange, where the computer program and data cause a computer to perform some or all of the steps described in the above method embodiments for a station or an access point.

Embodiments of the present application also provide a computer program product, where the computer program product includes a computer program operable to cause a computer to perform some or all of the steps described in the above method embodiments for a station or an access point. The computer program product may be a software installation package.

For simplicity of description, the above embodiments are described as a series of combinations of operations. Those skilled in the art should appreciate that the present application is not limited by the order of acts described, as some steps in the embodiments of the present application may occur in other orders or concurrently. In addition, those skilled in the art should also realize that the embodiments described in the specification all belong to the preferred embodiments, and that the referred actions, steps, modules, units, and the like are not necessarily required by the embodiments of the present application.

In the foregoing embodiments, the descriptions of the embodiments of the present application have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It should be clear to a person skilled in the art that the methods, steps or functions of related modules/units described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product or in the form of computer program instructions executed by a processor. Wherein the computer program product comprises at least one computer program instruction, which may consist of corresponding software modules, which may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. The computer program instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium. For example, the computer program instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media, or semiconductor media (e.g., SSDs), among others.

Each module/unit included in each apparatus or product described in the above embodiments may be a software module/unit, a hardware module/unit, or a part of the module/unit may be a software module/unit and another part may be a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented by using hardware such as a circuit; alternatively, a part of the modules/units included in the method may be implemented by using a software program running on a processor integrated inside a chip, and another part (if any) of the modules/units may be implemented by using hardware such as a circuit. The same applies to individual devices or products applied to or integrated in a chip module, or to individual devices or products applied to or integrated in a terminal.

The above-mentioned embodiments are intended to further illustrate the objects, technical solutions and advantages of the embodiments of the present application in detail, and it should be understood that the above-mentioned embodiments are only specific examples of the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application. Any modification, equivalent replacement, improvement and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A method for transmission power control report triggering, comprising:

2. The method of claim 1, wherein the transmission power control report carries at least one of: link margin information, transmission power information, power margin information; wherein,

the link margin information is used for indicating a ratio of the receiving power of the first station for receiving the trigger frame to the minimum receiving power required by the first station;

the transmission power information is used for indicating the transmission power of the transmission power control report fed back by the first station;

the power headroom information is used for representing a difference between a transmission power capability of the first station and a decibel of a transmission power of the transmission power control report fed back by the first station;

the first site is at least one site of the M sites.

3. The method of claim 2, wherein the TPC report carries the TPC information if TPC capability of the first station is affected.

4. The method of claim 3, wherein the transmit power capability of the first station is affected comprises at least one of: the transmission power capability of the first station is affected due to overheating of the device to which the first station belongs, and the transmission power capability of the first station is affected due to sharing of the transmission power capability by the wireless communication modules of the devices to which the first station belongs except the first station.

5. The method of any of claims 1-4, wherein the trigger frame comprises at least one of: a common information field, at least one user information field; wherein,

the common information field contains information for triggering the M stations to simultaneously feed back the transmission power control report; or,

the user information field contains information for triggering the M stations to simultaneously feed back the transmission power control report; or,

a common information subfield related to a trigger frame type in the common information field contains information for triggering the M stations to simultaneously feed back the transmission power control report; or,

a user information subfield related to a trigger frame type in the user information field contains information for triggering the M stations to simultaneously feed back the transmission power control report.

6. The method according to any of claims 1-5, wherein the simultaneous feedback is used to indicate that some or all of the M stations feed back the transmission power control report on the same time domain resource, and wherein the time domain resource is indicated by the trigger frame.

7. The method according to any of claims 1-6, wherein some or all of the M stations feed back the transmission power control report on different resources, wherein the resources comprise resource units in frequency domain or spatial streams in spatial domain, and wherein the resources are indicated by the trigger frame.

8. The method according to any of claims 1-7, wherein the trigger frame is one of: a buffer status report polling trigger frame, a beamforming report polling trigger frame, a newly defined trigger frame.

9. The method according to claim 8, wherein if the trigger frame is the newly defined trigger frame, a value of a trigger type subfield in a common information field of the trigger frame is set to any one of values 8 to 15.

10. The method according to claim 8, wherein if the trigger frame is the buffer status report polling trigger frame, the trigger frame is further used for triggering the M stations to feed back buffer status reports at the same time.

11. The method of claim 8, wherein if the trigger frame is the beamforming report polling trigger frame, the trigger frame is further used for triggering the M stations to feed back beamforming reports simultaneously.

12. A method for transmission power control report triggering, comprising:

13. The method of claim 12, wherein the transmission power control report carries at least one of: link margin information, transmission power information, and power margin information; wherein,

the first site is at least one site of the M sites.

14. The method of claim 13, wherein the TPC report carries the PH information if the TPC capability of the first station is affected.

15. The method of claim 14, wherein the transmit power capability of the first station being affected comprises at least one of: the transmission power capability of the first station is affected due to overheating of the device to which the first station belongs, and the transmission power capability of the first station is affected due to sharing of the transmission power capability by the wireless communication modules of the devices to which the first station belongs.

16. The method of any of claims 12-15, wherein the trigger frame comprises at least one of: a common information field, at least one user information field; wherein,

a user information subfield related to a trigger frame type in the user information field includes information for triggering the M stations to simultaneously feed back the transmission power control report.

17. The method according to any of claims 12-16, wherein the simultaneous feedback is used to indicate that some or all of the M stations feed back the transmission power control report on the same time domain resource, and wherein the time domain resource is indicated by the trigger frame.

18. The method according to any of claims 12-17, wherein some or all of the M stations feed back the transmission power control report on different resources, wherein the resources comprise resource units in the frequency domain or spatial streams in the spatial domain, and wherein the resources are indicated by the trigger frame.

19. The method according to any of claims 12-18, wherein the trigger frame is one of: a buffer status report polling trigger frame, a beamforming report polling trigger frame, a newly defined trigger frame.

20. The method of claim 19, wherein if the trigger frame is the newly defined trigger frame, a value of a trigger type subfield in a common information field of the trigger frame is set to any one of values 8 to 15.

21. The method according to claim 19, wherein if the trigger frame is the bsr poll trigger frame, the trigger frame is further used for triggering the M stations to feed back bsrs.

22. The method of claim 19, wherein the trigger frame is further used for triggering the M stations to feed back beamforming reports if the trigger frame is the beamforming report polling trigger frame.

23. A transmission power control report triggering apparatus, the apparatus comprising a processing unit and a communication unit, the processing unit configured to:

24. A transmission power control report triggering apparatus, the apparatus comprising a processing unit and a communication unit, the processing unit configured to:

25. An access point comprising a processor, a memory, a communication interface, and at least one program stored in the memory and configured to be executed by the processor, the at least one program comprising instructions for performing the steps in the method of any one of claims 1-11.

26. A station comprising a processor, a memory, a communication interface, and at least one program stored in the memory and configured to be executed by the processor, the at least one program comprising instructions for performing the steps of the method of any one of claims 12-22.

27. A computer-readable storage medium, characterized in that it stores a computer program and data for electronic data exchange, wherein the computer program and data cause a computer to perform the method according to any one of claims 1-22.