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

Abstract

The embodiment of the present application discloses a method and device for triggering a transmission power control report, an access point, and a station; the method includes: the access point sends a trigger frame, and the trigger frame is used to trigger M stations to simultaneously feed back a transmission power control report, The value of M is an integer greater than or equal to 1; the station obtains the trigger frame. Since one trigger frame can trigger at least one (M) stations to simultaneously feed back a transmission power control report, instead of each station feeding back a transmission power control report one by one, it is beneficial to reduce resource overhead and improve information transmission efficiency.

Description

Transmission power control report trigger method and device, access point and station

technical field

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

Background technique

The Institute of Electrical and Electronics Engineers (Institute of Electrical and Electronic Engineers, IEEE) has formulated the IEEE 802.11 series of protocol standards on wireless local area network (wireless local access network, WLAN), which has involved a related transmit power control (transmit power control, TPC) mechanism.

If an access point station (access point station, AP STA, also referred to as AP or access point for short) sends a TPC to a non-access point station (none access point station, non-AP STA, also referred to as STA or station for short) Request frame (TPC request frame), the TPC request frame can request the station to report link margin (linkmargin) and other information, then the station will feed back the TPC report frame (TPC report frame) to the access point, so that the access point can pass The TPC report frame obtains information such as the link margin of the station, so that the access point can control its own transmission power, adjust the transmission resource bandwidth or select the modulation and coding scheme (MCS) through the link margin and other information. .

At present, the IEEE 802.11ax protocol standard supports DL (downlink, downlink) and UL (uplink, uplink) multi-user operations, that is, through DL OFDMA (orthogonal frequency division multiple access, orthogonal frequency division multiple access), UL OFDMA, DL MU-MIMO (multi-user multiple-input multiple-output, multi-user-multiple-input multiple-output) and UL MU-MIMO realize simultaneous data transmission between an access point and multiple stations. When initially starting data transmission or starting data transmission after a period of time without data transmission, the access point needs to obtain information such as link margins of multiple stations. However, the process for the access point to obtain the information can only send a TPC request frame to each of the multiple sites, and then the multiple sites feed back a TPC report frame one by one, resulting in large resource overhead and low information transmission efficiency And other issues.

Contents of the invention

Embodiments of the present application provide a method and device for triggering a transmission power control report, an access point, and a station, in order to realize that at least one station simultaneously feeds back a transmission power control report through one trigger frame, thereby helping to reduce resource overhead and improve information transmission efficiency .

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

The 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 the value of M is an integer greater than or equal to 1.

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

The station acquires a trigger frame, where the trigger frame is used to trigger M stations to simultaneously feed back a transmit power control report, where 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, the device includes a processing unit and a communication unit, and the processing unit is used for:

A trigger frame is sent by the communication unit, and the trigger frame is used to trigger M stations to simultaneously feed back a transmission 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, the device includes a processing unit and a communication unit, and the processing unit is used for:

A trigger frame is received by the communication unit, and the trigger frame is used to trigger M stations to simultaneously feed back a transmission power control report, and the value of M is an integer greater than or equal to 1.

In a fifth aspect, the embodiment of the present application provides an access point, including a processor, a memory, a communication interface, and one or more programs, wherein the at least one program is stored in the memory and is configured by the The processor executes, and the at least one program includes instructions for executing the steps in the first aspect of the embodiments of the present application.

In a sixth aspect, an embodiment of the present application provides a site, including a processor, a memory, a communication interface, and at least one program, wherein the at least one program is stored in the memory and is configured to be executed by the processor , the at least one program includes instructions for executing the steps in the second aspect of the embodiments of the present application.

In a seventh aspect, the embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer programs and data for electronic data exchange, wherein the computer programs and data enable the computer to execute Part or all of the steps described in the first aspect or the second aspect of the embodiment of the present application.

In an eighth aspect, the embodiments of the present application provide a computer program, wherein the computer program is operable to 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. The computer program can be a software installation package.

It can be seen that the access point sends a trigger frame, and the trigger frame is used to trigger M stations to simultaneously feed back the transmission power control report, and the value of M is an integer greater than or equal to 1; the station obtains the trigger frame. Since one trigger frame can trigger at least one (M) stations to simultaneously feed back a transmission power control report without each station feeding back a transmission power control report one by one, which is beneficial to reduce resource overhead and improve information transmission efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a frame structure of a trigger frame provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a frame structure of a common information field in a trigger frame provided by 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 provided by an embodiment of the present application;

Fig. 5 is a schematic diagram of each station feeding back a TPC report frame one by one provided by the embodiment of the present application;

FIG. 6 is a schematic flowchart of a method for triggering a transmission power control report provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of a trigger frame triggering multiple stations to simultaneously feed back TPC reports provided by an embodiment of the present application;

FIG. 8 is a block diagram of functional units of a device for triggering a transmission power control report provided by an embodiment of the present application;

FIG. 9 is a block diagram of functional units of another device for triggering a transmission power control report provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an access point provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a site provided by an embodiment of the present application.

detailed description

In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. With regard to the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but also includes steps or units that are not listed, or includes , other steps or units inherent in the product or equipment.

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 present application. The occurrences of this 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 understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that the "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to realize communication between devices, and there is no limitation on this. "Network" and "system" in the embodiments of the present application express the same concept, and the communication system is the communication network.

The embodiments of the present application may be applied to a wireless local area network (wireless local area network, WLAN). Currently, the protocol standard adopted by WLAN is IEEE 802.11 series. Wherein, the WLAN may include multiple basic service sets (basicservice set, BSS), and the devices in the basic service set may include an access point station (access point station, AP STA, also referred to as AP or access point) and a non-access point station. A point station (none access pointstation, non-AP STA, also referred to as STA or station for short). In addition, each basic service set may contain one access point and at least one station.

Specifically, an access point may be an entity that provides network access for stations connected to it via a wireless medium. The access point connects individual wireless network clients to the Ethernet. The access point may be a network device with a wireless fidelity (wirelessfidelity, Wi-Fi) chip. The access point may be a device supporting various IEEE 802.11 protocol standards. For example, the access point may support devices of IEEE 802.11ac, IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, IEEE802.11ax, IEEE802.11be, next-generation WLAN protocol standards, and the like. The access point may include a centralized controller, a base station (base station, BS), a base transceiver station (base transceiver station, BTS), a site controller, a switch, and the like.

Further, the access point may include a device that provides a wireless communication function for the station, such as a chip system. Wherein, the chip system may include a chip, and may also include other discrete devices, such as transceiver devices and the like.

Further, the access point can communicate with an Internet Protocol (Internet Protocol, IP) network. For example, the Internet (internet), a private IP network or other data networks and the like.

Specifically, the station may be a wireless communication chip, a wireless sensor or a wireless communication terminal. For example, user equipment (user equipment, UE), remote/remote terminal (remote UE), access terminal, user unit, user station, mobile device, user terminal, intelligent terminal, wireless communication device supporting Wi-Fi communication function , user agent or user device/cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld equipment, in-vehicle equipment, wearable equipment, etc., which are not specifically limited.

Further, the stations may include non-AP extremelyhigh throughput stations (none AP extremelyhigh throughput station, non-AP EHT STA) and non-AP high-efficiency stations (none AP highefficiency station, non-AP HE STA), etc. .

Further, the station may include a device with a transceiver function, such as a chip system. Wherein, the chip system may include a chip, and may also include other discrete devices, such as transceiver devices and the like.

In combination with the above description, the following embodiments of the present application will give an exemplary description of a wireless communication system of an access point and a station in a basic service set.

For example, please refer to FIG. 1 for the wireless communication system of the embodiment of the present application. Wireless communication system 10 may include access point 110 , station 120 and station 130 . Wherein, the access point 110 can provide communication coverage for a specific geographical area, and can communicate with the stations 120 and 130 located within the communication coverage.

Optionally, the wireless communication system 10 may also include multiple access points, and a certain number of stations may be included within the communication coverage of each access point, which is not specifically limited.

Optionally, the wireless communication system 10 may further include access network (radio access network, RAN) equipment, core network (core network, CN) equipment, network controller, mobility management entity and other network entities, which are not specifically limited. .

Optionally, 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 specifically limited.

The relevant content involved in the technical solution of the present application will be introduced below.

1. Trigger frame (Trigger Frame, TF)

The trigger frame belongs to a Media Access Control (Media Access Control, MAC) frame. Wherein, as shown in FIG. 2 , the frame structure (Frame Format) of the trigger frame may include a frame control (Frame Control, FC) field (field, or domain), a duration (Duration) field, a receiver address (Receiver address) , RA) field, transmitter address (Transmission address, TA) field, a common information (Common Information, Common Info) field, at least one user information (User Information, User Info) field, padding (Padding) field and frame check Sequence (Frame Check Sequence, FCS) field.

It should be noted that different IEEE 802.11 protocol standards may have different specifications for the fields carried in the trigger frame.

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

The TA field may indicate the transmitter address of the trigger frame. When the access point transmitting the trigger frame does not use multiple BSSIDs, the TA field may indicate the MAC address of the access point.

The public 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 the plurality of stations triggered by the trigger frame to transmit a response to the trigger frame. Specifically, the trigger frame may include at least one user information field.

The user information field may indicate the station triggered by the trigger frame. That is to say, the user information field has a corresponding relationship with the site. Wherein, when the user information field includes association identifier (association identifier, AID) information, the site indicated by the AID information may be the site triggered by the trigger frame or the site corresponding to the user information field. For example, the AID12 subfield in the user information field may indicate 12 least significant bits (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 multiple subcarriers used for uplink and downlink transmission. In addition, the RU allocation subfield (RU allocation subfield) in the user information field may indicate the starting RU of one or more consecutive RUs allocated by the user information field.

The padding field may include padding bits. Wherein, the padding field may be used to ensure the time for the station sending the response frame to the trigger frame to prepare for the transmission of the response frame. Therefore, the length of the padding field may be determined according to the capability of the station sending the response frame to the trigger frame. Additionally, trigger frames may not include padding fields.

The access point may use the trigger frame to trigger the station to perform data transmission, such as uplink data transmission and point-to-point (peer-to-peer, P2P) link data transmission. Wherein, the data transmission of the uplink can be understood as that a station transmits data to the access point; the data transmission of the P2P link can be understood as that one station transmits data to another station on the P2P link.

2. The type of trigger frame

A trigger type subfield (trigger type subfield) in the common information field of the trigger frame may indicate the 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 trigger frame The frame type is BSRP, that is, the trigger frame is a BSRP trigger frame.

3. The frame structure of the public information field in the trigger frame

As shown in Figure 3, the frame structure of the public information field in the trigger frame includes: trigger type (Trigger Type) subfield, uplink length (UL Length) subfield, More TF subfield, need carrier sense (CS Required) subfield field, uplink bandwidth (UL BW) subfield, guard interval + long training sequence type (GI And LTF Type) subfield, MU-MIMO high-efficiency LTF mode (MU-MIMO HE-LTF Mode) subfield, HE-LTF symbol Number of HE-LTF Symbols and Midamble Periodicity (Number of HE-LTF Symbols and Midamble Periodicity) subfield, uplink STBC (UL STBC) subfield, LDPC Extra Symbol Segment (LDPC Extra Symbol Segment) subfield, AP transmit power (AP Tx Power) subfield , Packet Extension Ambiguity (PE Disambiguity) subfield, Uplink Spatial Reuse (UL Spatial Reuse) subfield, Doppler (Doppler) subfield, Uplink HE-SIG-A (UL HE-SIG-A) subfield, Reserved subfields, common information (Trigger Dependent Common Info) subfields related to trigger frame types, etc.

Table 1

4. The frame structure of the user information field in the trigger frame

As shown in Figure 4, the frame structure of the user information field in the trigger frame includes: association identifier 12 (AID12) subfield, resource unit allocation (RU Allocation) subfield, uplink forward error correction code coding type (UL FEC CodingType ) subfield, uplink high-efficiency modulation and coding strategy (UL HE-MCS) subfield, uplink DCM subfield, SS allocation/RA-RU information (SS Allocation/RA-RU Information) subfield, uplink target received power (UL TargetReceive Power) subfield, reserved (Reserved) subfield, public information (TriggerDependent User Info) subfield related to trigger frame type, etc.

5. Link margin, transmit power information and power headroom

Link margin: It can be defined as the ratio (ratio) of the received power of the signal received by the receiver to the minimum received power required by the receiver.

Sending power information: can be defined as the sending power of the signal sent by the receiver/sender.

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

In WLAN wireless communication, the sending and receiving parties need to know the other party’s (receiving) link margin/transmitting power information/(transmitting) power headroom, so that Its own transmission power control, radio resource bandwidth adjustment, or modulation and coding strategy (modulation and coding scheme, MCS) selection, etc. in,

(1) The sender can control its own transmission power, adjust the wireless resource bandwidth or select the MCS according to the link margin of the receiver. When the link margin is too large in the forward direction, the sender can reduce its own transmission power, increase the wireless resource bandwidth, or choose a higher-order MCS;

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

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

In addition, the way to initially obtain the link margin can be through the link measurement request frame (link measurement request frame)/link measurement report frame (link measurement report frame), TPC request frame/TPC report frame; the method of initially obtaining the transmission power information It can be through TPC request frame/TPC report frame. During the transmission, the link margin or transmission power information can be continuously updated through the MAC header.

6. Transmit power adaptation

A station can dynamically adjust the transmit power for transmitting a MAC protocol data unit (MAC protocol data unit, MPDU) to another station by estimating the path loss and the link margin.

The access point can dynamically adjust the transmission power used to transmit data to the station through the estimation of path loss and link margin.

The access point may use the TPC request frame to request the station to feed back (response to) the TPC report frame, where the TPC report frame carries link headroom and transmission power information. Wherein, the transmit power field of the TPC report frame is used to indicate the transmit power information, and the link headroom field of the TPC report frame is used to indicate the estimated link headroom.

At present, the IEEE 802.11ax protocol standard supports DL and UL multi-user operations, that is, through DL OFDMA, ULOFDMA, DL MU-MIMO and UL MU-MIMO, the access point and multiple stations can simultaneously transmit data. When initially starting data transmission or starting data transmission after a period of time without data transmission, the access point needs to obtain information such as link margins of multiple stations. However, the process for the access point to obtain the information can only send a TPC request frame to each of the multiple sites, and then the multiple sites feed back a TPC report frame one by one, resulting in large resource overhead and low information transmission efficiency And other issues.

For example, as shown in FIG. 5 , the access point 501 first 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, resulting in large resource overhead and low information transmission efficiency.

In combination with the above description, the embodiment of the present application provides a schematic flowchart of a method for triggering a transmission power control report, please refer to FIG. 6 , the method includes:

S610. The access point sends a trigger frame, where the trigger frame is used to trigger M stations to simultaneously feed back a transmit power control report, where M is an integer greater than or equal to 1.

Wherein, simultaneous feedback (or simultaneous transmission) may be used to indicate that some or all of the M stations feed back transmission power control reports on the same time domain resource, and the time domain resource is indicated by a 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. Wherein, the trigger frame may indicate the same time-domain resource, so that M stations can feed back (or send) TPC reports at the same time.

S620. The station acquires the trigger frame.

It should be noted that the IEEE 802.11ax protocol standard supports DL and UL multi-user operations, that is, through DLOFDMA, UL OFDMA, DL MU-MIMO and UL MU-MIMO, the access point (AP) and multiple stations (STA) simultaneously for data transfer. When the access point needs to obtain information such as the link margin of multiple stations, since the access point can only send a TPC request frame to the stations in the plurality of stations one by one, and then the station in the plurality of stations One TPC report frame is fed back one by one, resulting in problems such as high resource overhead and low information transmission efficiency.

Based on this, compared to the access point sending a TPC request frame to the stations one by one, the access point of the present application can send a trigger frame, which can be used to trigger M (M≥1) stations to feed back the transmit power control at the same time report (TPCreport), so that at least one station can simultaneously feed back and send a power control report through a trigger frame, thereby helping to reduce resource overhead and improve information transmission efficiency.

Exemplarily, as shown in FIG. 7, the access point 701 sends a trigger frame 711, and the trigger frame 711 is used to trigger the station 702 and the station 703 to feed back a TPC report frame simultaneously. Then, the station 702 obtains the trigger frame 711 , and feeds back a TPC report frame 712 on the uplink resource allocated by the trigger frame 711 . At the same time, the station 703 acquires the trigger frame 711 and feeds back a 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 acknowledgment (block ack, BA) frame to the station 702 and the station 703 . Finally, the access point 701 sends a trigger frame 721, and the trigger frame 721 is used to trigger the station 702 and the station 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 722 in the trigger frame 721 The uplink data is transmitted 723 on the allocated uplink resource.

In combination with the above description, specific descriptions are given below respectively.

Specifically, the transmit power control report may carry at least one of the following: link headroom information, send power information, and power headroom information; where the link headroom information is used to indicate the received power and The ratio of the minimum received power required by the first station; the transmission power information, used to indicate the transmission power of the first station to feed back the transmission power control report; the power headroom information, used to indicate the transmission power capability of the first station and the first station Feedback the decibel difference of the transmit power of the transmit power control report; the first station is at least one station among the M stations.

It should be noted that, in the WLAN wireless communication of the present application, if the access point needs to know the link margin information of at least one station (ie, the first station) among the M stations, the access point may send the A station sends a trigger frame, which can trigger the first station to feed back a TPC report carrying the link headroom information at the same time, so that the access point can obtain the link headroom information through the TPC report, and then The link headroom information is used to perform its own transmission power control, radio resource bandwidth adjustment, or modulation and coding scheme (modulation and coding scheme, MCS) selection, and the like. Wherein, if the link headroom information is positively larger, it means that the receiving power of the first station receiving the trigger frame is more positively than the minimum receiving power required by the first station, so the access point can reduce its own sending power. power, increase the wireless resource bandwidth, or select a higher-order MCS.

Similarly, in the WLAN wireless communication of the present application, if the access point needs to know the transmission power information of at least one of the M stations (that is, the first station), the access point may send a A trigger frame, where the trigger frame can trigger the first station to simultaneously feed back a TPC report carrying the transmission power information, so that the access point can obtain the transmission power information through the TPC report. Then, the access point can determine path loss (path loss) information by using the transmit power information and the receive power of the TPC report received by itself, that is, the path loss information is used to indicate that the first station feeds back the transmit power information of the TPC report The difference (in decibels) between the received power reported by the TPC and the access point, so that the access point can allocate a more reasonable uplink wireless resource bandwidth to the first station or select a more reasonable MCS through the path loss information.

In addition, each of the M stations has a certain transmit power capability (transmit power capability). Wherein, the access point may obtain the transmit power capability of the station during the process of establishing an initial connection with the station (such as an association process). Therefore, in the WLAN wireless communication of the present application, if the access point needs to know the power headroom information of at least one station (that is, the first station) among the M stations, the access point may send a power headroom information to the first station A trigger frame, which can trigger the first station to simultaneously feed back a TPC report carrying the power headroom information, so that the access point can obtain the power headroom information through the TPC report.

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

Wherein, the influence of the transmission power capability of the first station may include at least one of the following: overheating of the equipment belonging to the first station causes the transmission power capability of the first station to be affected; The wireless communication module shares (power sharing) the transmission power capability, which affects the transmission power capability of the first station.

It should be noted that when the transmit power capability of at least one of the M stations (that is, the first station) is affected (or changed), the TPC report fed back by the first station to the access point may carry power Headroom information, so that the access point can determine whether the transmission power capability of the first station is affected (or whether it changes) through the power headroom information and transmission power information, and supports certain factors that affect the transmission power capability of the first station scene.

In addition, in an access point multi-link device (AP Multi-Link Device, AP MLD) or a non-AP multi-link device (non-AP MLD), a multi-link device (MLD) may contain (integrate) At least one access point, at least one station, at least one wireless communication module, etc. Wherein, the wireless communication module may include at least one of the following: mobile communication (such as 2G/3G/4G/5G mobile communication) module, wireless local area network (wireless local area network, WLAN) communication module, Bluetooth (Bluetooth) communication module, wireless Fidelity (wireless fidelity, Wi-Fi) communication module, Zigbee (Zigbee) communication module, near field communication (near field communication, NFC) communication module, ultra-wideband (ultrawide band, UWB) communication module, visible light (light fidelity, Li-Fi) communication module.

Based on this, the device belonging to the first site in this application may be understood as a multi-link device. Wherein, the multi-link device may include (integrate) the first station and other wireless communication modules except the first station. If the equipment belonging to the first station is overheated, the transmission power capability of the first station may be affected; or, if the wireless communication modules of the equipment belonging to the first station share the transmission power capability, the first station The transmit power capability of the station may be affected.

It can be seen that the present application analyzes the factors affecting the transmission power capability of the first station, so as to support the scenario that certain factors affect the transmission power capability of the first station. At the same time, the access point can learn whether the transmission power capability of the station is affected (or changed) through the power headroom information carried in the TPC report, so as to make corresponding adjustments to improve system robustness and stability.

Specifically, the trigger frame may include at least one of the following: a public information field, at least one user information field; wherein, the public information field may contain information for triggering M stations to simultaneously feed back transmission power control reports; or, the user information field It may contain information for triggering M stations to simultaneously feed back transmission power control reports; or, the common information subfield related to the trigger frame type in the common information field may contain information for triggering M stations to simultaneously feed back transmission power control reports ; Or, the user information subfield related to the trigger frame type in the user information field may contain information for triggering M stations to simultaneously feed back the transmission power control report.

It should be noted that, referring to FIG. 2 , it can be seen that the frame structure of the trigger frame may include one public information field and at least one user information field. In order to ensure the consistency between the frame structures of the trigger frames stipulated in various WLAN protocol standards, and to realize the triggering of M sites and feed back the TPC report at the same time, the present application needs to modify the frame structure of the trigger frames.

In order to trigger M stations to feed back TPC reports at the same time, while ensuring that the frame structure of the modified trigger frame is compatible or consistent with the frame structure of other trigger frames (the same type or different types of trigger frames specified by different protocol versions), modify The trigger frame needs to contain (carry or carry) the information used to trigger M stations to feed back the TPC report at the same time, and this information can be composed of the common information field, the user information field, and the common information subfield related to the trigger frame type (triggerdependent common info subfield), the user information subfield (triggerdependent user info subfield) related to the trigger frame type, the reserved subfield in the public information field, and one of the reserved subfields in the user information field contains (carries or bears), so that Through the trigger frame containing the information, at least one station simultaneously feeds back the transmit power control report, thereby reducing resource overhead and improving information transmission efficiency.

Specifically, the user information field has a corresponding relationship with the sites in the M sites, and the corresponding relationship is indicated by the association identifier information in the user information field.

Wherein, the association identifier information may be an association identifier 12 (AID12) subfield (B0-B11).

It should be noted that, referring to FIG. 4 , it can be known that the AID12 subfield in the user information field of the trigger frame of the present application may indicate the station corresponding to the AID12 subfield. For example, as shown in Figure 2, the trigger frame carries M user information fields, and the M user information fields have a certain order in the frame structure of the trigger frame, and each user information in the M user information fields The AID12 subfield of the field indicates a station, that is, the M user information fields are in one-to-one correspondence with the M stations, so that the trigger frame triggers the stations that need to feed back the TPC report at the same time (that is, the M stations).

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

It should be noted that the M sites triggered by the trigger frame of the present application can feed back TPC reports in resource units (resource unit, RU) on the same time domain resource and different frequency domains/spatial streams on the air domain . It can be seen that the transmission of the TPC report is realized by indicating resource units or spatial streams through the trigger frame.

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

Wherein, 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 value from 8 to 15.

Wherein, if the trigger frame is a buffer status report polling trigger frame, the trigger frame is also used to trigger M stations to simultaneously feed back a buffer status report (buffer status report).

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

It should be noted that, referring to the above Table 1, it can be seen that the trigger type subfield (trigger type subfield) in the common information field of the trigger frame may indicate the type of the trigger frame. Wherein, 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 cache status report polling (BSRP) trigger frame; if the value of the trigger type subfield is set to any value from 8 to 15, then the trigger frame is a newly defined trigger frame of this application.

It can be seen that the present application implements at least one station to simultaneously feed back the transmission power control report through the cache status report polling trigger frame, the beamforming report polling trigger frame or the newly defined trigger frame, which is beneficial to reduce resource overhead and improve information transmission efficiency.

In addition, the newly defined trigger frame of this application can be defined as a multi-user transmit power control request (multi-usertransmit power control request, MU-TPC request) frame, and the MU-TPC request frame can be used to trigger at least one station to simultaneously Feedback TPC report. In other words, as long as the frame has the function of triggering at least one station to feed back the TPC report at the same time, the frame can be the trigger frame of the present application, and there is no specific limitation on this.

Secondly, the BSRP trigger frame can be used to collect the amount of data to be sent in the buffer of the station, so as to be subsequently used for uplink transmission scheduling. Therefore, the present application needs to modify the BSRP trigger frame so that the modified BSRP trigger frame can be used to trigger M stations to feed back TPC reports and cache status reports simultaneously. Wherein, the TPC report carries at least one of the following: link headroom information, transmission power information, and power headroom information, and the buffer status report carries the number of pending transmissions in the buffer of at least one station among the M stations information.

For example, referring to FIG. 3, it can be seen that the modified BSRP trigger frame can indicate the triggered M stations to feed back the buffer status report on the allocated uplink resource and feed back the TPC at the same time through the reserved subfield (such as B63) in the common information field. Report. Among them, the cache status report can be carried by a data frame (data frame), the TPC report can be carried by an action frame (action frame), and the two can be aggregated into a media access control protocol data unit (aggregation-MAC protocol data unit, A-MPDU ) frame.

Finally, the BFRP trigger frame can be used to collect precoding information required for beam transmission to the station, so as to be subsequently used for DL MU-MIMO (downlink multi-user-multiple-input multiple-output) transmission. Therefore, the present application needs to modify the BFRP trigger frame, so that the modified BFRP trigger frame can be used to trigger M stations to feed back TPC reports and beamforming reports simultaneously. Wherein, the TPC report carries at least one of the following: link headroom information, transmission power information, and power headroom information, and the beamforming report carries the precoding required for beam transmission to at least one of the M stations information information.

For example, referring to Fig. 3, it can be known that the modified BFRP triggering frame can instruct the M sites triggered by it to feed back the TPC while feeding back the beamforming report on the allocated uplink resources through the reserved subfield (such as B63) in the common information field. Report.

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

It should be noted that the action frame is a kind of management frame (magagement frame), and this application may use the action frame to carry the TPC report. At the same time, the system throughput is improved by aggregating action frames and data frames in A-MPDU.

The foregoing mainly introduces the solutions of the embodiments of the present application from the perspective of the method side. It can be understood that, in order to realize the above functions, the access point or station includes corresponding hardware structures and/or software modules for performing various functions. Those skilled in the art should know that, in combination with the methods, modules, units or algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain method, function, module, unit or step is executed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods for each specific application to implement the described methods, functions, modules, units or steps, but such implementation should not be regarded as exceeding the scope of the present application.

In this embodiment of the present application, functional units/modules may be divided into access points or stations according to the foregoing method examples. For example, each functional unit/module may be divided corresponding to each function, or two or more functions may be integrated into one functional unit/module. The above-mentioned integrated functional units/modules can be implemented not only in the form of hardware, but also in the form of software programs. It should be noted that the division of functional units/modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

In the case of using integrated units/modules, FIG. 8 provides a block diagram of functional units of a device for triggering a transmit power control report. The device 800 for triggering a transmit power control report includes: a processing unit 802 and a communication unit 803 . The processing unit 802 is configured to control and manage actions of the access point. For example, the processing unit 802 is configured to support the access point to execute the steps in FIG. 6 and other processes used in the technical solution described in this application. The communication unit 803 is used to support communication between the access point and other devices in the wireless communication system. The sending power control report triggering device 800 may further include a storage unit 801 for the program code executed by the sending power control report triggering device 800 and the transmitted data.

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

Wherein, the processing unit 802 may be a processor or a controller, for example, may be a central processing unit (central processing unit, CPU), a general processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processing unit 802 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of DSP and microprocessors, and the like. The communication unit 803 may be a communication interface, a transceiver, a transceiver 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 device 800 for triggering a transmit power control report in this embodiment of the present application may be the access point shown in FIG. 10 .

Specifically, the processing unit 802 is configured to perform any step performed by the access point in the foregoing method embodiments, and when performing data transmission such as sending, may optionally call the communication unit 803 to complete corresponding operations. Detailed description will be given below.

The processing unit 802 is configured to: send a trigger frame, where the trigger frame is used to trigger M stations to simultaneously feed back a transmit power control report, where the value of M is an integer greater than or equal to 1.

It should be noted that, for the specific implementation of each operation in the embodiment shown in FIG. 8 , refer to the description in the method embodiment shown in FIG. 6 above, and details are not repeated here.

It can be seen that the transmission power control report triggering device 800 sends a trigger frame, which is used to trigger M stations to feed back a transmission power control report at the same time, so that at least one station can feed back a transmission power control report at the same time through one trigger frame, which is beneficial to Reduce resource overhead and improve information transmission efficiency.

Specifically, the transmit power control report carries at least one of the following: link headroom information, send power information, and power headroom information; wherein, the link headroom information is used to indicate the receiving power of the first station receiving the trigger frame and the first station receiving the trigger frame. The ratio of the minimum received power required by a site; the transmit power information, used to indicate the transmit power of the first site feedback transmit power control report; the power headroom information, used to indicate the transmit power capability of the first site and the feedback of the first site The decibel difference of the sending power of the sending power control report; the first station is at least one station among the M stations.

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

Specifically, the impact on the transmission power capability of the first station includes at least one of the following: overheating of the equipment belonging to the first station causes the transmission power capability of the first station to be affected; The wireless communication module shares the transmission power capability, which affects the transmission power capability of the first station.

Specifically, the trigger frame includes at least one of the following: a public information field, at least one user information field; wherein, the public information field contains information used to trigger M stations to simultaneously feed back transmission power control reports; or, the user information field contains information for The information used to trigger M stations to feed back the transmission power control report at the same time; or, the common information subfield related to the trigger frame type in the public information field contains the information used to trigger the M stations to feed back the transmission power control report at the same time; or, the user The user information subfield related to the trigger frame type in the information field includes information for triggering M stations to feed back the transmit power control report simultaneously.

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 a trigger frame.

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

Specifically, the trigger frame is one of the following: a cache status report polling trigger frame, a beamforming report polling trigger frame, or 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 value from 8 to 15.

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

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

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

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

Wherein, the processing unit 902 may be a processor or a controller, for example, may be a central processing unit (central processing unit, CPU), a general processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processing unit 902 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 903 may be a communication interface, a transceiver, a transceiver circuit, etc., 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 sending power control report triggering device 900 involved in this embodiment of the present application may be the station shown in FIG. 11 .

During specific implementation, the processing unit 902 is used to perform any step performed by the station in the above method embodiments, and when performing data transmission such as sending, it can optionally call the communication unit 903 to complete corresponding operations. Detailed description will be given below.

The processing unit 902 is configured to: acquire a trigger frame, which is used to trigger M stations to simultaneously feed back a transmission power control report, where the value of M is an integer greater than or equal to 1.

It should be noted that, for the specific implementation of each operation in the embodiment shown in FIG. 9 , refer to the description in the method embodiment shown in FIG. 6 above, and details are not repeated here.

It can be seen that the transmission power control report triggering device 900 obtains the trigger frame, and the trigger frame is used to trigger M stations to feed back the transmission power control report at the same time, so that at least one station can simultaneously feed back the transmission power control report through one trigger frame, and then there is It is beneficial to reduce resource overhead and improve information transmission efficiency.

Please refer to FIG. 10 . FIG. 10 is a schematic structural diagram of an access point provided in an embodiment of the present application. Wherein, 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 random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), erasable programmable read-only memory (erasable programmable read-only memory, EPROM) or portable A read-only memory (compact disc read-only memory, CD-ROM), the memory 1020 is used to store program codes executed by the access point 1000 and transmitted data.

The communication interface 1030 is used to receive and send data.

Processor 1010 may be one or more CPUs. In the case that the processor 1010 is a 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: send a trigger frame, and the trigger frame is used to trigger M stations to simultaneously feed back a transmission power control report, and the value of M is is an integer greater than or equal to 1.

It should be noted that the specific implementation of each operation can use the corresponding description of the above method embodiment shown in FIG. Let's go into more detail.

Specifically, the transmit power control report carries at least one of the following: link headroom information, send power information, and power headroom information; wherein, the link headroom information is used to indicate the receiving power of the first station receiving the trigger frame and the first station receiving the trigger frame. The ratio of the minimum received power required by a site; the transmit power information, used to indicate the transmit power of the first site feedback transmit power control report; the power headroom information, used to indicate the transmit power capability of the first site and the feedback of the first site The decibel difference of the sending power of the sending power control report; the first station is at least one station among the M stations.

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

Specifically, the impact on the transmission power capability of the first station includes at least one of the following: overheating of the equipment belonging to the first station causes the transmission power capability of the first station to be affected; The wireless communication module shares the transmission power capability, which affects the transmission power capability of the first station.

Specifically, the trigger frame includes at least one of the following: a public information field, at least one user information field; wherein, the public information field contains information used to trigger M stations to simultaneously feed back transmission power control reports; or, the user information field contains information for The information used to trigger M stations to feed back the transmission power control report at the same time; or, the common information subfield related to the trigger frame type in the public information field contains the information used to trigger the M stations to feed back the transmission power control report at the same time; or, the user The user information subfield related to the trigger frame type in the information field includes information for triggering M stations to feed back the transmit power control report simultaneously.

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 a trigger frame.

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

Specifically, the trigger frame is one of the following: a cache status report polling trigger frame, a beamforming report polling trigger frame, or 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 value from 8 to 15.

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

Please refer to FIG. 11 . FIG. 11 is a schematic structural diagram of a site provided by an embodiment of the present application. Wherein, the station 1100 includes a processor 1110 , a memory 1120 , a communication interface 1130 , and a communication bus for connecting the processor 1110 , the memory 1120 , and the communication interface 1130 .

The memory 1120 includes but is not limited to random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), erasable programmable read-only memory (erasable programmable read-only memory, EPROM) or portable A read-only memory (compact disc read-only memory, CD-ROM), the memory 1120 is used to store program codes executed by the station 1100 and transmitted data.

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

Processor 1110 may be one or more CPUs. In the case that 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 used to read at least one program 1121 stored in the memory 1120, and perform the following operations: acquire a trigger frame, and the trigger frame is used to trigger M stations to simultaneously feed back a transmission power control report, and the value of M is greater than or an integer equal to 1.

It should be noted that the specific implementation of each operation can use the corresponding description of the method embodiment shown in FIG. 6 above, and the site 1100 can be used to execute the site-side method of the above method embodiment of the present application, which will not be described in detail here.

An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer programs and data for electronic data exchange, wherein the computer programs and data enable the computer to perform the above method Part or all of the steps described by the station or access point in the embodiment.

An embodiment of the present application also provides a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to cause the computer to perform the part or All steps. The computer program product may be a software installation package.

It should be noted that, for the above-mentioned embodiments, for the sake of simple description, they are expressed as a series of action combinations. Those skilled in the art should know that the present application is not limited by the sequence of actions described, because some steps in the embodiments of the present application may be performed in other orders or simultaneously. In addition, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions, steps, modules or units involved are not necessarily required by the embodiments of the present application.

In the above-mentioned embodiments, the embodiments of the present application have different emphases in the description of each embodiment, and for the parts not described in detail in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art should know that the methods, steps or functions of related modules/units described in the embodiments of the present application may be realized in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it may be implemented in whole or in part in the form of a computer program product, or may be implemented in a manner in which a processor executes computer program instructions. Wherein, the computer program product includes at least one computer program instruction, and the computer program instruction can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, mobile hard disk, CD-ROM (CD-ROM) or any other form of storage medium known in the art. The computer program instructions may be stored in, 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, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium, or a semiconductor medium (such as an SSD).

Each module/unit contained in each device or product described in the above embodiments may be a software module/unit, may be a hardware module/unit, or may be a part of a software module/unit while the other part is a hardware module/unit. For example, for each device or product applied to or integrated in a chip, each module/unit included in it may be implemented by hardware such as a circuit; or, a part of the modules/units included in it may be implemented by a software program. The software program runs on the processor integrated in the chip, and some modules/units of the other part (if any) can be realized by hardware such as circuits. The same can be understood for each device or product applied to or integrated in a chip module, or each device or product applied to or integrated in a terminal.

The specific implementation manners described above further describe the purpose, technical solutions and beneficial effects of the embodiments of the present application in detail. The scope of protection of the embodiments of the present application is limited. All modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims (27)

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

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.

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:

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.

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 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.

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,

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 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:

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.

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

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.

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