Power indication method and apparatus, device, and storage medium

Abstract

A power indication method and apparatus, a device, and a storage medium, relating to the technical field of communications. The method is executed by a sharing AP. The method comprises: receiving first information, the first information comprising power-related information respectively corresponding to one or more candidate shared APs (610). By reporting, by the candidate shared APs, the power-related information to the sharing AP, the sharing AP coordinately adjusts the power-related information corresponding to the candidate shared APs, such that the power of the shared APs is no longer strictly constrained, and control over the power of the shared APs is relaxed, thereby enabling more shared APs to participate in Co-SR, which is beneficial to maximizing the Co-SR capability of a multi-AP system.

Description

Power indication methods, devices, equipment and storage media Technical Field

[0001] This application relates to the field of communication technology, and in particular to a power indication method, apparatus, device, and storage medium. Background Technology

[0002] Co-SR (Coordinated Spatial Reuse) refers to two or more Access Points (APs) transmitting simultaneously during the same Transmission Opportunity (TXOP). The sharing AP coordinates with other shared APs to reduce interference and efficiently utilize resources. The unidirectional coordinated power negotiation mode in related technologies presupposes that the sharing AP has a fixed downlink transmission power and specifies a maximum acceptable transmission power for the shared APs, which then select a suitable downlink site based on this maximum acceptable power. This method imposes overly strict power constraints on the shared APs. If reducing the power would prevent the site from correctly resolving the Downlink Physical Layer Convergence Protocol Data Unit (DL PPDU), the shared AP will abandon allowing that site to participate in the Co-SR transmission, and may even lose the opportunity for Co-SR altogether. This results in low overall capacity utilization of the multi-AP system. Summary of the Invention

[0003] This application provides a power indication method, apparatus, device, and storage medium. The technical solution is as follows:

[0004] According to one aspect of the embodiments of this application, a power indication method is provided, the method being performed by a shared access point (AP), the method comprising:

[0005] Receive first information, which includes power-related information corresponding to one or more candidate shared APs.

[0006] According to one aspect of the embodiments of this application, a power indication method is provided, the method being performed by a candidate shared access point (AP), the method comprising:

[0007] Send first information, which includes power-related information corresponding to one or more of the candidate shared APs.

[0008] According to one aspect of the embodiments of this application, a wireless communication device is provided, the device comprising:

[0009] The receiving module is used to receive first information, which includes power-related information corresponding to one or more candidate shared access points (APs).

[0010] According to one aspect of the embodiments of this application, a wireless communication device is provided, the device comprising:

[0011] The sending module is used to send first information, which includes power-related information corresponding to one or more candidate shared access points (APs).

[0012] According to one aspect of the embodiments of this application, a communication device is provided, the communication device including a processor and a memory, the memory storing a computer program, the processor executing the computer program to implement the power indication method described above. The communication device is a terminal device, or the communication device is a network device.

[0013] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, the storage medium storing a computer program for execution by a processor to implement the power indication method described above.

[0014] According to one aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is running, are used to implement the power indication method described above.

[0015] According to one aspect of the embodiments of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, and a processor reading from the computer-readable storage medium and executing the computer instructions to implement the power indication method described above.

[0016] The technical solutions provided in this application embodiment may have the following beneficial effects:

[0017] Candidate shared APs report power-related information to the sharing AP. The sharing AP then coordinates and adjusts the power-related information of the candidate shared APs, no longer strictly constraining the power of the shared APs. This relaxes the control over the power of the shared APs, allowing more shared APs to participate in Co-SR, which is beneficial to maximizing the Co-SR capability of the multi-AP system. Attached Figure Description

[0018] Figure 1 is a schematic diagram of a network architecture provided in one embodiment of this application;

[0019] Figure 2 is a schematic diagram of the format of a special user information field provided in an embodiment of this application;

[0020] Figure 3 is a schematic diagram of the encoding of uplink power margin provided in an embodiment of this application;

[0021] Figure 4 is a schematic diagram of a shared AP in an embodiment of this application announcing its intention to use Co-TDMA (Time Division Multiple Access) during a portion of the TXOP time through an Initial Control Frame (ICF).

[0022] Figure 5 is a schematic diagram of the signaling flow of Co-SR provided in an embodiment of this application;

[0023] Figure 6 is a flowchart of a power indication method provided in an embodiment of this application;

[0024] Figure 7 is a schematic diagram of the frame structure of the first information provided in an embodiment of this application;

[0025] Figure 8 is a schematic diagram of the frame structure of the first information provided in another embodiment of this application;

[0026] Figure 9 is a schematic diagram of the frame structure of the second or third information provided in an embodiment of this application;

[0027] Figure 10 is a schematic diagram of the frame structure of the second or third information provided in another embodiment of this application;

[0028] Figure 11 is a schematic diagram of the frame structure of the second or third information provided in another embodiment of this application;

[0029] Figure 12 is a flowchart of a power indication method provided in another embodiment of this application;

[0030] Figure 13 is a schematic diagram of a Co-SR environment with only one candidate shared AP provided in an embodiment of this application;

[0031] Figure 14 is a schematic diagram of a Co-SR environment with multiple candidate shared APs provided in an embodiment of this application;

[0032] Figure 15 is a block diagram of a power indication device provided in an embodiment of this application;

[0033] Figure 16 is a block diagram of a power indication device provided in another embodiment of this application;

[0034] Figure 17 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0036] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0037] Please refer to Figure 1, which shows a schematic diagram of a network architecture 100 provided in one embodiment of this application. The network architecture 100 may include: a terminal device 10, an access network device 20, and a core network element 30.

[0038] Terminal device 10 can refer to UE (User Equipment), STA (Station), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, user agent, or user equipment. In some embodiments, terminal device 10 can also be a cellular phone, cordless phone, SIP (Session Initiation Protocol) phone, WLL (Wireless Local Loop) station, PDA (Personal Digital Assistant), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in 5GS (5th Generation System), or terminal device in the future evolved PLMN (Public Land Mobile Network), etc., and this application embodiment is not limited to these. For ease of description, the devices mentioned above are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed within the cell managed by each access network device 20. Terminal equipment can also be simply referred to as terminal or UE, the meaning of which can be understood by those skilled in the art.

[0039] Access network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal device 10. Access network device 20 may include various forms of macro base stations, micro base stations, relay stations, APs (Access Points), etc. In systems employing different wireless access technologies, the name of the device with access network device functionality may differ; for example, in a 5G NR (New Radio) system, it is called gNodeB or gNB (Next Generation Node B). As communication technologies evolve, the name "access network device" may change. For ease of description, in this embodiment, the aforementioned devices providing wireless communication functionality to terminal device 10 are collectively referred to as access network devices. In some embodiments, a communication relationship can be established between terminal device 10 and core network element 30 through access network device 20. For example, in an LTE (Long Term Evolution) system, access network device 20 can be one or more eNodeBs within an EUTRAN (Evolved Universal Terrestrial Radio Access Network); in a 5G NR system, access network device 20 can be one or more gNBs within a RAN (Radio Access Network). In the embodiments of this application, unless otherwise specified, "network device" refers to access network device 20, such as a base station.

[0040] Core network element 30 is a network element deployed in the core network. Its main functions are to provide user connectivity, manage users, and bear services, serving as an interface to external networks. For example, core network elements in a 5G NR system may include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function) entities, and SMF (Session Management Function) entities.

[0041] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via some air interface technology, such as the NG interface in a 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via some air interface technology, such as the Uu interface.

[0042] The "5G NR system" in this application embodiment can also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in this application embodiment can be applied to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (such as B5G (Beyound 5G) systems, 6G systems (6th Generation System), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems. This application does not limit these applications.

[0043] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] Before introducing the technical solution of this application, some related technical knowledge involved in this application will be introduced and explained. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0045] 1. Spatial reuse based on PSR (Parameterized Spatial Reuse)

[0046] PSR is defined as an operation in TB (Transport Block) transmission that replaces SR based on OBSS PD (Overlapping Basic Service Set Packet Detect). This mechanism allows APs to transmit from stations in other BSSs (Basic Service Sets) while the AP is performing trigger-frame-based uplink transmissions to corresponding STAs (Stations). To avoid loss of ongoing transmission, the AP specifies an acceptable receiver interference level that can be caused by other BSSs without impairing ongoing transmissions. APs wishing to promote SR determine an acceptable receiver interference level as follows:

[0047] 〖Acceptable Receiver Interference Level〗_AP=RSSI_Target-SINR_min-MARGIN

[0048] Among them, RSSI_target is the expected received power (in dBm) of the uplink signal of the highest MCS (Modulation and Coding Scheme) of the TB PPDU; SNR_min is the minimum signal-to-noise ratio required to generate less than 10% PER (Packet Error Rate) under this MCS; MARGIN is a safe value of 5dB.

[0049] AP calculates the PSR_INPUT parameter as follows: PSR_INPUT = TX_PWR AP +Acceptable Receiver Interference Level AP

[0050] TX_PWR AP This is the power that the AP uses to transmit TF (Transport Format). Next, the AP uses a set of PSR_TF quantization values ​​from -26dBm to -80dBm (Table 27-24 spatial reuse field encoding for an HE TB PPDU) and finds PSR_TF according to the following rule: the highest available value less than or equal to PSR_INPUT.

[0051] If a station receives a PSR-permitted cross-BSS TF and its expected transmit power TX_PWR_STA does not exceed the transmit limit in the TF, then it identifies a PSR opportunity. (TxPower) PSRT -10×log10(N PSRT,nonpunc )≤PSR min -RPL PSRR,20MHz

[0052] Where BW_STA is the station's expected transmission bandwidth, and RPL_TF is the TF's receive power level.

[0053] When a trigger frame requests an EHT TB PPDU, each Spatial Reuse n subfield (1≤n≤4) in the EHT (Extremely High Throughput) variant common info field is determined based on the EHT Spatial Reuse 1 subfield or EHT Spatial Reuse 2 subfield in the Special User info field, as shown in Figure 2.

[0054] 2. Uplink Power Headroom (UPH)

[0055] When a STA sends an HE TB PPDU (High Efficiency TB PPDU), it transmits the uplink power margin in decibels (HR) within the UPH control subfield of the HE-variant HT control field carried in this PPDU. STA This is done to help the AP select a suitable HE-MCS. UPH is defined as:

[0056] in, The variable represents the maximum uplink transmission power of the HE TB PPDU (HE-MCS) after taking into account hardware capabilities, regulatory requirements, local maximum transmission power levels, and coexistence requirements with non-IEEE-802.11 devices. This represents the current uplink transmission power of the HE TB PPDU under the allocated HE-MCS. This power is determined by power control and is limited by the capabilities of non-AP STAs and other requirements. HR STA The uplink power margin of the HE TB PPDU is shown in Figure 3.

[0057] In the UPH Control Subfield:

[0058] 1. UL Power Headroom Subfield: Used for power pre-calibration, in dB, applicable to current HE MCS. Its value ranges from 0 to 31, corresponding to 0 dB to 31 dB respectively.

[0059] 2. Minimum Transmit Power Flag subfield: When set to 1, it indicates that the minimum transmit power of the current HE-MCS has been reached by the STA; if not, it is set to 0.

[0060] 3. Coordinate the polling phase of TDMA

[0061] As shown in Figure 4, during a portion of the TXOP, the sharing AP announces its intention to participate in the Co-TDMA process via an Initial Control Frame (ICF). This ICF polls one or more APs, asking if they are willing to share the TXOP with the sharing AP and requesting a response; the polled AP should indicate in its response whether it intends to participate in the shared time during the current TXOP in response to the ICF received from the sharing AP.

[0062] Similar polling has not yet been written into the PDT of Co-SR. Therefore, in this application, the ICF in Co-TDMA is reused in the Co-SR scenario for negotiation before transmission.

[0063] 4. Coordinated Space Reuse

[0064] 1. Power Negotiation Modes: This proposal introduces two common Co-SR negotiation modes: Optimal coordination and One-way coordination. The most relevant to this proposal is One-way coordination. In One-way coordination, the sharing AP determines its transmit power without using measurement information from the OBSS AP and STA, while the shared AP determines its transmit power based on the sharing AP's transmission parameters. Compared to Optimal coordination, it has lower overhead.

[0065] The power calculation method for unidirectional coordination is as follows:

[0066] Sharing AP determines own Tx power that satisfies SINR of the target MCS based on pathloss between sharing AP and destination STA as following: TxPowerSharing AP=INDestination STA,max +SINR required +PathlossSharing AP,Destination STA IN Destination STA,max =RSSI Shared AP beacon

[0067] Sharing AP also determines acceptable Tx power of shared AP as following: AcceptableTxPower Shared AP =ARIL Destination STA +PathlossShared AP,Destination STA

[0068] Shared AP determines Tx power less than or equal to AcceptableTxPower Shared AP based on ARIL of destination STA of shared AP.

[0069] 2. Applicable scenarios for Co-SR: See 11-24-1834-04-00bn-11bn-non-elr-signaling-design-for-new-features. This proposal suggests that under UHR, Co-SR should only be applied to downlink (DL) single-user (SU) transports within each Basic Service Set (BSS).

[0070] 3. Coordinated Space Reuse Process: The signaling process of Co-SR is shown in Figure 5.

[0071] Measurement Phase: The AP requests measurement reports from sites in its BSS, including RSSI from the OBSS AP. The access point calculates path loss (a) and (b) based on the transmission power and RSSI from the measurement reports received from the sites.

[0072] Co-SR phase: If a one-way coordination method is used, the MAP Request includes the following additional information: the acceptable transmission power of AP2 (the maximum transmission power of AP2).

[0073] If the shared AP can participate in Co-SR, then in one-way coordination, the MAP (Mobile Application Part) Response does not contain any additional information about power negotiation.

[0074] When the shared AP receives the MAP Response, if the shared AP can cooperate, it notifies the multi-access point of the scheduling information (transmission timing, frequency resources) required for coordination via the MAP Trigger frame. At the same time, the shared access point may notify the shared AP of the acceptable transmission power via the multi-access point trigger frame.

[0075] The unidirectional coordinated power negotiation mode in related technologies presupposes that the sharing AP has a fixed downlink transmission power, specifying a maximum acceptable transmission power for the shared AP, which then selects a suitable downlink site based on this maximum acceptable transmission power. This method imposes overly strict power constraints on the shared AP. If it is found that reducing the power would prevent the site from correctly resolving the DL PPDU, the shared AP will abandon allowing that site to participate in the current Co-SR transmission, and the shared AP may even lose the opportunity for this Co-SR transmission altogether, thus failing to maximize the overall capability of the Multi-AP system.

[0076] Please refer to Figure 6, which shows a flowchart of a power indication method provided in one embodiment of this application. The method is performed by a shared access point (AP). The method includes the following step 610.

[0077] Step 610: The shared AP receives first information, which includes power-related information corresponding to one or more candidate shared APs.

[0078] In some embodiments, the candidate shared AP sends first information to the sharing AP. In some embodiments, one or more candidate shared APs are selected by the sharing AP from a multi-AP set. In some embodiments, the multi-AP set includes one or more APs. In some embodiments, the multi-AP set includes one or more co-channel APs, where co-channel APs refer to APs operating in the same frequency band. Information transmission by co-channel APs may cause co-channel interference. To avoid co-channel interference, Co-SR can be used to enable APs participating in spatial multiplexing to coordinate with each other. The sharing AP precisely controls the transmit power of the shared APs to eliminate interference from the shared APs to the sharing AP and increase the gain of the shared APs.

[0079] Co-SR refers to two or more APs transmitting simultaneously during the same TXOP. The sharing AP coordinates with other shared APs to reduce interference and efficiently utilize resources. In related technologies, the power constraints on shared APs are too strict, limiting the number of sites they can serve and potentially causing them to miss Co-SR opportunities. However, in practice, it is not necessary to fix the power of the sharing APs; adjusting the transmit power through negotiation between the sharing and shared APs can increase the total throughput of the Multi-AP system. Based on this, this application introduces a downlink power margin indication method for negotiating downlink power and selecting sites during Co-SR.

[0080] In some embodiments, power-related information includes one or more of the following:

[0081] The target transmit power of the current MCS of one or more candidate downlink stations corresponding to the candidate shared AP;

[0082] The maximum transmit power of the shared AP among the candidate shared APs is determined based on the target transmit power of the current MCS of one or more candidate downlink sites and / or the path loss corresponding to one or more candidate downlink sites.

[0083] Downlink power margin for candidate shared APs to send DL PPDUs;

[0084] The minimum downlink power margin for candidate shared APs to send DL PPDUs;

[0085] Power adjustment preference refers to the power adjustment strategy favored by candidate shared APs.

[0086] The sharing AP competes for a TXOP and prepares to perform Co-SR within this TXOP. Before initiating Co-SR, the sharing AP pre-selects one or more candidate sharing APs from the Multi-AP set and inquires about the willingness of the candidate sharing APs to participate in Co-SR. Optionally, it indicates one or more of the following during Co-SR: the target transmit power Pwr of the current MCS for each candidate downlink site, the maximum transmit power of the sharing AP (also known as the maximum transmittable power of the candidate sharing AP) APx_Pwr_max, the downlink power margin DL_Pwr_Headroom, and the minimum downlink power margin DL_Pwr_Headroom_min.

[0087] Since the above parameters are mentioned multiple times in the specification, the following will use a shared AP as an example to explain the above parameters. The above parameters of the candidate shared AP can be referred to in the following embodiments. Only the shared AP needs to be replaced with the candidate shared AP. The following embodiments will not be described in detail.

[0088] 1. Pwr

[0089] The Pwr is determined by power control and is limited by the capabilities of the shared AP and the corresponding site, as well as other requirements. It is also related to the path loss between the selected MCS and the shared AP and the corresponding site. The shared AP selects an appropriate Pwr to ensure that the PPDU can be fully resolved for its site.

[0090] 2. APx_Pwr_max

[0091] APx_Pwr_max is calculated from the OBSS AP RSSI measurement results reported by the corresponding site of the shared AP. The specific calculation method is as follows: APx_Pwr_max=ARIL+Pathloss(Shared APx→STA) (1)

[0092] Where STA is the site corresponding to the shared AP. x is the number of the shared AP. ARIL is the acceptable level of receiver interference, which can be obtained from the introduction of ARIL above: ARIL = RSSI_Target – SNR_min – Margin (2)

[0093] Where RSSI_Target is the target received signal strength of the STA under this MCS. SNR_min is the minimum signal-to-noise ratio required to generate less than 10% PER under this MCS. Margin is a safe value of a few dB. RSSI_Target is also determined by the target transmit power of the shared AP. RSSI_Target = Pwr - Pathloss(Sharing AP→STA) (3)

[0094] Substituting equations (2) and (3) into equation (1), we get: APx_Pwr_max=Pwr–Pathloss(Sharing AP→STA)–SNR_min–Margin+Pathloss(Shared APx→STA) (4)

[0095] As can be seen from equation (4), for any AP corresponding to a station, since Pathloss(Sharing AP→STA) and Pathloss(Shared APx→STA) can be obtained by measuring the RSSI of the Beacon frame, they are fixed values; SNR_min and Margin depend on the capability of the station receiver and are fixed values; therefore, APx_Pwr_max has a definite relationship with Pwr, that is, APx_Pwr_max is obtained by adding a constant to Pwr.

[0096] 3. DL_Pwr_Headroom

[0097] DL_Pwr_Headroom represents the downlink power margin, or transmission power margin, of the AP when sending DL PPDUs, measured in dB, and is a value greater than or equal to 0. Referring to the explanation of UPH calculation methods above, we can derive: DL_Pwr_Headroom = Pwr_max – Pwr

[0098] The variable Pwr_max represents the maximum transmission power of the DL PPDU under the current MCS after considering hardware capabilities, regulatory requirements, local maximum transmission power level, and coexistence requirements of non-IEEE-802.11 devices.

[0099] 4. DL_Pwr_Headroom_min

[0100] DL_Pwr_Headroom_min represents the minimum downlink power margin for the AP to transmit DL PPDUs, in dB, and is generally less than or equal to 0. DL_Pwr_Headroom_min can be calculated using the following formula: DL_Pwr_Headroom_min = Pwr_min – Pwr

[0101] The variable Pwr_min represents the minimum AP transmit power required for a site to resolve a DL PPDU under the current MCS.

[0102] 5. Power adjustment preference

[0103] The power adjustment preference is the power adjustment strategy favored by the candidate shared AP. The candidate shared AP reports its own power adjustment preference to the sharing AP. The sharing AP can adjust the maximum transmit power of the shared AP based on the power adjustment preference of the candidate shared AP so that the candidate shared AP can get better gain.

[0104] In some embodiments, power adjustment preferences may include the desired power adjustment direction of the candidate shared AP, such as increasing the maximum transmit power of the sharing AP of the candidate shared AP, or decreasing the maximum transmit power of the sharing AP of the candidate shared AP.

[0105] In some embodiments, power adjustment preferences may include a range of values ​​for the maximum transmit power of the shared AP that the candidate shared AP expects.

[0106] In some embodiments, the power-related information of the shared AP may not include power adjustment preferences. In some embodiments, if there is only one candidate shared AP, the power-related information sent by the shared AP to the candidate shared AP may also include the power adjustment preferences of the shared AP, and the candidate shared AP will perform power adjustment.

[0107] In some embodiments, after receiving the first information sent by the candidate shared AP, the sharing AP adjusts the target transmit power, the maximum transmit power of the sharing AP of the candidate shared AP, the downlink power margin, and other information based on the power-related information of the candidate shared AP carried in the first information, and determines whether the candidate shared AP can participate in this Co-SR.

[0108] In some embodiments, the sharing AP sends a second message to the candidate sharing AP, the second message being used to inquire whether the candidate sharing AP participates in Co-SR.

[0109] In some embodiments, upon receiving an inquiry from the sharing AP, a candidate shared AP that wishes to participate in the Co-SR responds to the sharing AP. Simultaneously, it indicates one or more of the following for each candidate downlink site during the Co-SR: target transmit power Pwr for the current MCS, maximum transmit power APx_Pwr_max for the sharing AP, downlink power margin DL_Pwr_Headroom, minimum downlink power margin DL_Pwr_Headroom_min, and power adjustment preference.

[0110] Following the above process, power negotiation for Co-SR can be performed in the following two ways:

[0111] 1. When two or more APs (including the sharing AP and the candidate shared AP) participate in Co-SR, the sharing AP does not carry its own site's power and power margin information during polling. It only collects the information reported by the candidate shared AP. The sharing AP uses this information to calculate and determine whether the candidate shared AP can participate in this Co-SR, and in the subsequent Co-SR trigger frame, it indicates its downlink transmission power to the target shared AP that can participate in Co-SR.

[0112] 2. When only two APs (including the sharing AP and the candidate shared AP) participate in Co-SR, in addition to the above methods, the sharing AP and the shared AP can also report the power and power margin information of their respective sites to each other. The shared AP can decide whether to participate in this Co-SR based on the results reported by the sharing AP and adjust its power. In this case, the sharing AP does not need to indicate the power to the shared AP in the Co-SR trigger frame.

[0113] As can be seen from the above examples, before sending the first information, the sharing AP sends polling information (referred to as the second information in the following embodiments) to the candidate shared AP to inquire whether the candidate shared AP participates in Co-SR; or the sharing AP sends an ICF to the candidate shared AP to announce its intention to participate in the Co-TDMA process. In some embodiments, the candidate shared AP is the AP that receives the polling information and / or ICF sent by the sharing AP, so the candidate shared AP can also be called a polled AP or an ICF polled AP.

[0114] The technical solution provided in this application embodiment involves the candidate shared AP reporting power-related information to the sharing AP. The sharing AP then coordinates and adjusts the power-related information corresponding to the candidate shared AP, no longer strictly constraining the power of the shared AP, thus relaxing the control over the power of the shared AP. This allows more shared APs to participate in Co-SR, which is beneficial for maximizing the Co-SR capability of the multi-AP system.

[0115] The frame structure of the first information

[0116] In some embodiments, the first information is sent by the candidate shared AP to the shared AP. In some embodiments, the first information may be carried in an action frame or a control frame. Exemplarily, the first information is carried in an action frame, such as in a multi-AP response frame, and / or a newly defined action frame. Exemplarily, the first information is carried in a control frame, such as in a multi-STA BlockAck, and / or a newly defined control frame.

[0117] In some embodiments, the first information includes one or more first information fields, with each first information field corresponding to a candidate shared AP. In some embodiments, each of the one or more first information fields corresponds to a candidate shared AP. For example, when there are multiple candidate shared APs, the first information includes multiple first information fields, with each of the multiple first information fields corresponding one-to-one with the multiple candidate shared APs; or, when there is only one candidate shared AP, the first information includes one first information field, with the first information field corresponding to the candidate shared AP.

[0118] In some embodiments, a first information field corresponding to a candidate shared AP means that a first information field corresponds to the power-related information of a candidate shared AP, or in other words, a first information field is used to carry the power-related information of a candidate shared AP.

[0119] In some embodiments, the first information field includes one or more of the following fields:

[0120] The first candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0121] The first transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP;

[0122] The first maximum power field is used to indicate the maximum transmit power of the shared AP of the candidate shared AP. The maximum transmit power of the shared AP is determined based on the target transmit power of the current MCS of one or more candidate downlink sites and / or the path loss corresponding to one or more candidate downlink sites.

[0123] The first power margin field is used to indicate the downlink power margin corresponding to the candidate shared AP;

[0124] The first minimum power margin field is used to indicate the minimum downlink power margin corresponding to the candidate shared AP;

[0125] The power adjustment preference field is used to indicate the power adjustment preference corresponding to the candidate shared AP.

[0126] Regarding the above parameters, please refer to the content described in the above embodiment using a shared AP as an example. You only need to replace the shared AP with the candidate shared AP.

[0127] In some embodiments, when the first information is carried in an action frame, the first information field is a downlink power margin reporting information field, which is used to indicate the power-related information of the candidate shared AP.

[0128] In some embodiments, when the action frame is an action frame already defined in the protocol, one possible implementation is that the downlink power headroom reporting information field is a newly added information field in the action frame; another possible implementation is that the downlink power headroom reporting information field is a reserved information field in the action frame. For example, the action frame is a multi-AP response frame.

[0129] In some embodiments, where the action frame is a newly defined action frame, the downlink power headroom reporting information field is a specially defined application-indicating information field containing power-related information of the candidate shared AP. For example, the action frame is a newly defined Co-SR downlink power headroom element (Co-SR DPH Element) frame.

[0130] In some embodiments, when the first information is carried in a control frame, the first information field is an identifier information field, which is used to indicate the transmission identifier of the candidate downlink station corresponding to the candidate shared AP.

[0131] In some embodiments, when the control frame is a predefined control frame according to the protocol, one possible implementation is that the identifier information field is a newly added information field in the action frame; another possible implementation is that the identifier information field is a reserved information field in the action frame. For example, the control frame is Multi-STA BlockAck.

[0132] In some embodiments, where the control frame is a newly defined action frame, the identifier information field is a specially defined application-indicating information field that indicates the power-related information of the candidate shared AP.

[0133] For example, as shown in Figure 7, the action frame includes one or more DHP Report fields (first information fields), with each DHP Report field corresponding to one candidate shared AP. For example, if there is only one candidate shared AP (n=1), the action frame includes one DHP Report field, corresponding to one candidate shared AP; if there are multiple candidate shared APs, for example, three candidate shared APs, the action frame includes three DHP Report fields, each corresponding to one of the three candidate shared APs. The DHP Report field carries power-related information corresponding to the candidate shared AP. The DHP Report field includes one or more fields from the following: AID12 field, Target DL Power field, Sharing AP Power max field, DL Power Headroom field, DL Power Headroom min field, and power adjustment preference. The power adjustment preference field is not shown in Figure 7. If the power adjustment preference field is added to the structure shown in Figure 7, the number of bytes occupied by the DHP Report field needs to be adjusted, or the number of bits occupied by any one or more of the fields AID12, Target DL Power, Sharing AP Power max, DL Power Headroom, and DL Power Headroom min needs to be adjusted.

[0134] For example, the action frame includes one or more AID TID Info fields (first information fields), with one AID TID Info field corresponding to one candidate shared AP. For example, if there is only one candidate shared AP, the action frame includes one AID TID Info field, corresponding to one candidate shared AP; if there are multiple candidate shared APs, for example, three candidate shared APs, the action frame includes three AID TID Info fields, each of which corresponds to one of the three candidate shared APs. The AID TID Info field is used to carry power-related information corresponding to the candidate shared AP. The AID TID Inf field, as shown in Figure 8, includes one or more fields from the following: AID12 field, Target DL Power field, Sharing AP Power max field, DL Power Headroom field, DL Power Headroom min field, and power adjustment preference. The power adjustment preference field is not shown in Figure 8. If the power adjustment preference field is added to the structure shown in Figure 8, the number of bytes occupied by the Feedback field in the AID TID Info field needs to be adjusted, or the number of bits occupied by any one or more fields among the AID12 field, Target DL Power field, Sharing AP Power max field, DL Power Headroom field, and DL Power Headroom min field needs to be adjusted.

[0135] In some embodiments, the bit length of one or more of the above fields is predefined by the protocol.

[0136] 1. AID12 field: Used to indicate the candidate STA expected to send DL PPDU. For example, the AID12 field has a bit length of 12 bits.

[0137] 2. Target DL Power field: This field indicates the expected power to be used when transmitting the DL PPDU to the candidate STA. For example, the Target DL Power field is 5 bits long.

[0138] 3. Sharing AP Power max field: This field indicates the maximum power of the shared AP required to ensure the STA can correctly receive PPDUs when serving a candidate STA. For example, the bit length of Sharing AP Power max can be 5 bits.

[0139] 4. Downlink Power Headroom (DL Power Headroom) field: Measured in dB, the possible values ​​range from 0 to 31, corresponding to 0 dB to 31 dB respectively. For example, the DL Power Headroom field can be 5 bits long.

[0140] 5. Minimum Downlink Power Headroom (DL Power Headroom min) field: Measured in dB, with possible values ​​ranging from 0 to 31, corresponding to 0 dB to -31 dB respectively. For example, the DL Power Headroom min field can be 5 bits long.

[0141] 6. Power Adjustment Preference Field: Used to indicate the power adjustment preference corresponding to the candidate shared AP. In some embodiments, the bit length of the power adjustment preference field can be x bits, where the power adjustment preference corresponding to the shared AP is indicated in a bitmap manner. The value of x is related to the total number of power adjustment preference items, and x is a positive integer. For example, x = 1. When the value of the power adjustment preference field is 1, it indicates that the power adjustment preference of the candidate shared AP is to reduce power; when the value of the power adjustment preference field is 0, it indicates that the power adjustment preference of the candidate shared AP is to increase power. Alternatively, when the value of the power adjustment preference field is 1, it indicates that the power adjustment preference of the candidate shared AP is to increase power; when the value of the power adjustment preference field is 0, it indicates that the power adjustment preference of the candidate shared AP is to reduce power. For example, when x = 2, a value of 00 in the power adjustment preference field indicates that the candidate shared AP's power adjustment preference is to increase power within the first range; a value of 01 indicates that the candidate shared AP's power adjustment preference is to increase power within the second range; a value of 10 indicates that the candidate shared AP's power adjustment preference is to decrease power within the third range; and a value of 11 indicates that the candidate shared AP's power adjustment preference is to decrease power within the third range. It should be noted that this is only an illustrative example of power adjustment preferences. The bit length occupied by the power adjustment preference field can be set based on the number of possible power adjustment strategies in actual situations, and the bit length occupied by the power adjustment field can be predefined by the protocol. The correspondence between the power adjustment preference field and the power adjustment strategy can be predefined by the protocol or indicated by the shared AP, for example, it can be indicated by the shared AP in the second information.

[0142] The above embodiments provide a frame structure for the first information, which provides a basis for carrying power-related information of candidate shared APs in the first information.

[0143] Second information related content

[0144] In some embodiments, before receiving the first information, the sharing AP polls one or more candidate shared APs selected by the sharing AP in the Multi AP set to see if they participate in Co-SR.

[0145] In some embodiments, the sharing AP sends a second message to one or more candidate sharing APs, the second message being used to inquire whether the candidate sharing APs participate in Co-SR.

[0146] In some embodiments, after receiving the second information, the candidate AP being shared replies to the sharing AP. In some embodiments, if the candidate AP being shared agrees to participate in Co-SR, the candidate AP being shared sends a first message to the sharing AP. In some embodiments, the first message is further used to indicate that one or more candidate APs being shared agree to participate in Co-SR.

[0147] In some embodiments, the first information is used to explicitly indicate that one or more candidate shared APs agree to participate in Co-SR. Exemplarily, the first information includes a second information field, which is used to indicate that one or more candidate shared APs agree to participate in Co-SR. Exemplarily, the second information field is used to indicate the identification information of the candidate shared APs that agree to participate in Co-SR.

[0148] In some embodiments, the first information is used to implicitly indicate that one or more candidate shared APs agree to participate in Co-SR. For example, if the first information includes power-related information of the candidate shared AP, it indicates that the candidate shared AP agrees to participate in Co-SR; if the first information does not include power-related information of the candidate shared AP, it indicates that the candidate shared AP does not agree to participate in Co-SR.

[0149] In some embodiments, the number of candidate shared APs may affect the frame structure of the second information. The frame structure of the second information will be described below with the example of one or more candidate shared APs.

[0150] 1. There are multiple candidate shared APs.

[0151] In some embodiments, when there are multiple candidate shared APs, the second information does not include power-related information for the shared APs.

[0152] As mentioned in the above embodiments, when there are multiple candidate shared APs, the sharing AP does not need to indicate its own power-related information to the candidate shared APs during polling. Instead, it receives the power-related information reported by the candidate shared APs, then adjusts the power based on the power-related information of the candidate shared APs, and then configures the adjusted power-related information for the candidate shared APs. This will not be elaborated further here.

[0153] 2. Only one candidate AP can be shared.

[0154] In some embodiments, if there is only one candidate shared AP, the second information may also include power-related information corresponding to the shared AP.

[0155] In some embodiments, when there is only one candidate shared AP, whether the candidate shared AP participates in Co-SR is determined by the candidate shared AP based on the second information, and the power-related information of the candidate shared AP included in the first information is adjusted based on the second information.

[0156] In some embodiments, when there are multiple candidate shared APs, whether a candidate shared AP participates in Co-SR is determined by the shared AP based on first information.

[0157] As mentioned in the above embodiments, when there is only one candidate shared AP, the sharing AP can send its own power-related information to the candidate shared AP during polling. Then, the candidate shared AP adjusts its power and reports the adjusted power-related information to the sharing AP.

[0158] In some embodiments, when there is only one candidate shared AP and multiple candidate downlink sites for the candidate shared AP, the second information includes multiple first user information fields, each first user information field corresponding to one candidate downlink site of the candidate shared AP. One of the multiple first user information fields corresponds to one of the multiple candidate downlink sites of the candidate shared AP. The first user information field is used to carry power-related information of the candidate downlink site of its corresponding candidate shared AP.

[0159] In some embodiments, the first user information field includes one or more of the following fields:

[0160] The second candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0161] The second transmit power field is used to indicate the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP;

[0162] The second maximum power field is used to indicate the maximum transmit power of the candidate shared AP. The maximum transmit power of the candidate shared AP is determined based on the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and the path loss corresponding to one or more candidate downlink sites.

[0163] The second power margin field is used to indicate the downlink power margin of the candidate shared AP when sending downlink DL PPDU;

[0164] The second minimum power margin field is used to indicate the minimum downlink power margin for candidate shared APs to send DL PPDUs.

[0165] For example, as shown in Figure 9, the second information includes multiple User Info n fields (first user information fields, where n represents the index of the candidate downlink site), and the User Info n field corresponds to the nth candidate downlink site. The User Info n field includes one or more fields from the following: AID12 field, Target DL Power field, Shared AP Power max field, DL Power Headroom field, and DL Power Headroom min field.

[0166] In some embodiments, the Shared AP Power max field is used to indicate the maximum transmit power of the candidate shared AP allocated by the sharing AP to the candidate shared AP. Descriptions of the other fields mentioned above can be found in the frame structure of the first information, and will not be repeated here.

[0167] In some embodiments, when there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the second information includes a first Co-SR DPH field, which is used to indicate one or more of the following in sequence:

[0168] The candidate transmit power of the current MCS of a candidate downlink station corresponding to the candidate shared AP;

[0169] The maximum transmit power of a candidate shared AP is determined based on the candidate transmit power of the current MCS of a candidate downlink site corresponding to the candidate shared AP and the path loss corresponding to the candidate downlink site.

[0170] Downlink power margin for candidate shared APs to send downlink DL PPDU;

[0171] The minimum downlink power margin for candidate shared APs to send DL PPDUs.

[0172] For example, the second information includes a first Co-SR DPH field. As shown in Figure 10, the first Co-SR DPH field is used to indicate one or more parameters among Target DL Power, Shared AP Power max, DL Power Headroom, and DL Power Headroom min.

[0173] In some embodiments, when there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the second information includes a special user information field. In some embodiments, the special user information field includes one or more of the following fields:

[0174] The second candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0175] The second transmit power field is used to indicate the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP;

[0176] The second maximum power field is used to indicate the maximum transmit power of the candidate shared AP. The maximum transmit power of the candidate shared AP is determined based on the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and the path loss corresponding to one or more candidate downlink sites.

[0177] The second power margin field is used to indicate the downlink power margin of the candidate shared AP when sending downlink DL PPDU;

[0178] The second minimum power margin field is used to indicate the minimum downlink power margin for candidate shared APs to send DL PPDUs.

[0179] For example, as shown in Figure 11, the second information includes a Special User Info field, which includes one or more of the following fields: AID12 field, Target DL Power field, Shared AP Power max field, DL Power Headroom field, and DL Power Headroom min field.

[0180] In the above embodiments, a frame structure for the second information is provided, which provides a basis for carrying the power-related information of the shared AP in the second information. At the same time, if the power-related information of the candidate shared AP is carried in the first information, the power-related information of the shared AP may not be carried in the second information, thus avoiding the waste of transmission resources between the shared AP and the candidate shared AP.

[0181] Third-party information related content

[0182] In some embodiments, after receiving the first information sent by the candidate shared AP, the sharing AP can determine the target shared AP to participate in this Co-SR based on the power-related information of the candidate shared AP, and adjust the power-related information allocated to the shared AP.

[0183] In some embodiments, the sharing AP sends third information to the target shared AP, the third information being used to trigger the target shared AP to participate in Co-SR, the target shared AP being one of one or more candidate shared APs participating in Co-SR.

[0184] In some embodiments, the third information may also include power-related information corresponding to the shared AP after adjustment based on the first information.

[0185] In some embodiments, the third information is carried in the trigger frame. For example, power-related information indicated by the shared AP can be carried in a trigger frame, such as an Initial Control Frame (ICF), and / or a Multi-AP Trigger, which can be a Basic trigger frame, a BSRP frame, a MU-RTS frame, etc., and / or a newly defined trigger frame.

[0186] In some embodiments, the number of candidate downlink sites of the target shared AP may affect the frame structure of the third information. The frame structure of the third information will be described below with the example of one or more candidate downlink sites of the target shared AP.

[0187] 1. There are multiple candidate downlink stations.

[0188] In some embodiments, when there are multiple candidate downlink sites for the target shared AP, the third information includes multiple second user information fields, each second user information field corresponding to one candidate downlink site of the target shared AP. One of the multiple second user information fields corresponds to one of the multiple candidate downlink sites of the target shared AP. The second user information field is used to carry power-related information of its corresponding candidate downlink site of the target shared AP.

[0189] In some embodiments, the second user information field includes one or more of the following fields:

[0190] The third candidate site field is used to indicate the candidate downlink site for the expected transmission of DL PPDU corresponding to the target shared AP;

[0191] The third transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink stations corresponding to the target shared AP;

[0192] The third maximum power field is used to indicate the maximum transmit power of the target shared AP. The maximum transmit power of the target shared AP is determined based on the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and / or the path loss corresponding to one or more candidate downlink sites.

[0193] The third power margin field is used to indicate the downlink power margin of the target being sent by the shared AP for downlink DL PPDU;

[0194] The third minimum power margin field is used to indicate the minimum downlink power margin that the target shared AP can send DL PPDUs to.

[0195] For example, as shown in Figure 9, the third information includes multiple User Info n fields (second user information fields, where n represents the index of the candidate downlink site), and the User Info n field corresponds to the nth candidate downlink site. The User Info n field includes one or more fields from the following: AID12 field, Target DL Power field, Shared AP Power max field, DL Power Headroom field, and DL Power Headroom min field.

[0196] 2. Only one candidate downlink station exists.

[0197] In some embodiments, when there is only one candidate downlink site for the shared AP, the third information includes a second Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence:

[0198] The target transmit power of the current MCS of a candidate downlink station corresponding to the shared AP;

[0199] The target shared AP's maximum transmit power is determined based on the target transmit power of the current MCS of a candidate downlink site corresponding to the target shared AP and / or the path loss corresponding to a candidate downlink site.

[0200] The target is the downlink power margin of the shared AP sending downlink DL PPDU;

[0201] The target is the minimum downlink power margin for the shared AP to send DL PPDUs.

[0202] For example, the third information includes a first Co-SR DPH field. As shown in Figure 10, the first Co-SR DPH field is used to indicate one or more parameters among Target DL Power, Shared AP Power max, DL Power Headroom, and DL Power Headroom min.

[0203] In some embodiments, when there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the third information includes a special user information field. In some embodiments, the special user information field includes one or more of the following fields:

[0204] The third candidate site field is used to indicate the candidate downlink site for the expected transmission of DL PPDU corresponding to the target shared AP;

[0205] The third transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink stations corresponding to the target shared AP;

[0206] The third maximum power field is used to indicate the maximum transmit power of the target shared AP. The maximum transmit power of the target shared AP is determined based on the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and / or the path loss corresponding to one or more candidate downlink sites.

[0207] The third power margin field is used to indicate the downlink power margin of the target being sent by the shared AP for downlink DL PPDU;

[0208] The third minimum power margin field is used to indicate the minimum downlink power margin that the target shared AP can send DL PPDUs to.

[0209] For example, as shown in Figure 11, the second information includes a Special User Info field, which includes one or more of the following fields: AID12 field, Target DL Power field, Shared AP Power max field, DL Power Headroom field, and DL Power Headroom min field.

[0210] In some embodiments, the description of the frame structure of the third information can be referenced to the description of the frame structure of the second information. It should be noted that the power-related information of the shared AP carried in the second information is unadjusted, while the power-related information of the shared AP carried in the third information is obtained after adjusting the relevant information of the candidate shared APs carried in the second information.

[0211] The above embodiments provide a frame structure for the shared AP to allocate adjusted power-related information to the target shared AP.

[0212] Complete process introduction

[0213] 1. There are multiple candidate shared APs.

[0214] Please refer to Figure 12. When there are multiple candidate shared APs, the sharing AP first selects multiple candidate shared APs from the Multi AP set, and then sends a second message to these multiple candidate shared APs. The second message is used to inquire whether these multiple candidate shared APs participate in Co-SR (1210). The second message does not include power-related information of the shared APs.

[0215] After receiving the second information, if the candidate AP agrees to participate in Co-SR, the candidate AP sends the first information to the sharing AP. The first information includes the power-related information (1220) of the multiple candidate APs.

[0216] After receiving the second information, the sharing AP can determine the target sharing AP based on the power-related information of the multiple candidate sharing APs carried in the second information, and perform power adjustment. Then, it can send a third information to the target sharing AP, which triggers the target sharing AP to participate in Co-SR (1230). The third information carries the adjusted power-related information of the sharing AP.

[0217] 2. Only one candidate AP can be shared.

[0218] (1) Referring to Figure 12, if there is one candidate shared AP, the sharing AP first selects a candidate shared AP from the Multi AP set, and then sends a second message to the candidate shared AP. The second message is used to inquire whether the candidate shared AP participates in Co-SR (1210). The second message does not include the power-related information of the sharing AP.

[0219] After receiving the second information, if the candidate AP agrees to participate in Co-SR, it sends the first information to the sharing AP. The first information includes the power-related information (1220) of the candidate AP.

[0220] After receiving the second information, the sharing AP can determine the target sharing AP based on the power-related information of the candidate sharing AP carried in the second information, and perform power adjustment. Then, it can send a third information to the target sharing AP, which triggers the target sharing AP to participate in Co-SR (1230). The third information carries the adjusted power-related information of the sharing AP.

[0221] (2) Referring to Figure 12, if there is one candidate shared AP, the sharing AP first selects a candidate shared AP from the Multi AP set, and then sends a second message to the candidate shared AP. The second message is used to inquire whether the candidate shared AP participates in Co-SR (1210). The second message includes power-related information of the sharing AP.

[0222] After receiving the second information, if the candidate AP agrees to participate in Co-SR, it sends the first information to the sharing AP. The first information includes the power-related information (1220) of the candidate AP. The power-related information of the candidate AP included in the first information is adjusted by the candidate AP based on the power-related information of the sharing AP carried in the second information.

[0223] After receiving the second information, the sharing AP can determine whether the candidate shared AP participates in Co-SR based on the second information. If the candidate shared AP participates in this Co-SR, the candidate shared AP is identified as the target shared AP, and a third information is sent to the target shared AP. The third information is used to trigger the target shared AP to participate in Co-SR (1230). The third information does not include the power-related information of the sharing AP.

[0224] Power Adjustment Example

[0225] Example 1:

[0226] Figure 13 shows the case where there is only one candidate AP to be shared, where STA1 is the site corresponding to the shared AP, and STA2 and STA3 are the sites corresponding to the APs being shared.

[0227] Both the sharing AP and the shared AP provided the parameters shown in Table 1 during the negotiation phase.

[0228] Table 1: Parameters provided by the sharing AP and the shared AP during the negotiation phase

[0229] According to the parameter settings in the table above, STA2 and STA3 cannot participate in Co-SR because the target transmit power of the shared AP to STA2 and STA3 is greater than the maximum transmit power of the shared AP, i.e., Shared_AP_Pwr_x > Shared_AP_Pwr_max (where the parameter configured for the shared AP is Shared_AP_Pwr_max, i.e., the parameter corresponding to the STA1 column is Shared_AP_Pwr_max; the parameter configured for the shared AP is Sharing_AP_Pwr_max, i.e., the parameter corresponding to the STA2 and STA3 columns is Sharing_AP_Pwr_max). However, the shared AP still has a 10dB downlink power margin, so the shared AP can appropriately increase its power to satisfy: Shared_AP_Pwr_x <= Shared_AP_Pwr_max and Sharing_AP_Pwr_x <= Sharing_AP_Pwr_max.

[0230] Among them, the power increase of the shared AP does not exceed its own downlink power margin.

[0231] For example, the power configuration for negotiation between STA1 and STA2 becomes as shown in Table 2.

[0232] Table 2: Parameters negotiated between STA1 and STA2

[0233] At this point, the power settings meet the requirements, and the shared AP transmits at the adjusted power during Co-SR. If the parameter values ​​of the sharing AP and the shared AP are opposite (i.e., the target transmit power of the sharing AP is greater than the maximum transmit power of the sharing AP), the shared AP must increase its transmit power either automatically or by instruction. The adjusted downlink signal coverage area is shown within the solid circle in Figure 13. For STA1 and STA3, there is no power configuration that meets the requirements, therefore Co-SR transmission cannot be performed simultaneously.

[0234] In addition, if the shared AP also indicates that the minimum downlink power margin of STA2 is -7dB, the power can also be configured according to Table 3.

[0235] Table 3: Parameters negotiated between STA1 and STA2 after configuring the minimum downlink power margin

[0236] The adjusted downlink signal coverage is shown within the dashed circle in Figure 13. Whether to increase or decrease power depends on the AP's internal implementation, but if the candidate shared AP reports a power adjustment preference, this can be used as the basis for power adjustment.

[0237] Example 2:

[0238] Figure 14 shows the case where there are two or more candidate shared APs, where STA1 is the site corresponding to the shared AP, and STA2 and STA3 are the sites corresponding to shared AP1 and shared AP2, respectively.

[0239] For ease of power calculation, we use a favorable scenario where the distances between the shared APs are relatively large, and interference between them can generally be ignored. Shared APs coordinate power, satisfying the following condition: Shared_AP_n_Pwr_x <= Shared_APn_Pwr_max, n = 1, 2, ... max{Sharing_AP_1_Pwr_x, Sharing_AP_1_Pwr_x, ..., Sharing_AP_n_Pwr_x} <= Sharing_AP_Pwr_max

[0240] Where Sharing_AP_n_Pwr_x represents the maximum transmit power that the shared APn can receive from the shared AP, and x is the index of the candidate downlink station of the shared APn.

[0241] It should be noted that, in the above method embodiments, the steps performed by the shared AP can be implemented separately as a power indication method on the shared AP side; the steps performed by the candidate shared AP can be implemented separately as a power indication method on the candidate shared AP side.

[0242] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0243] Please refer to Figure 15, which shows a block diagram of a power indication device according to an embodiment of this application. This device has the functionality to implement the power indication method example described above; this functionality can be implemented in hardware or by hardware executing corresponding software. This device can be a shared access point (AP) as described above, or it can be located within a shared AP. As shown in Figure 15, the device 1500 may include a receiving module 1510.

[0244] The receiving module 1510 is used to receive first information, the first information including power-related information corresponding to one or more candidate shared APs.

[0245] In some embodiments, the power-related information includes one or more of the following:

[0246] The target transmit power of the current modulation and coding scheme (MCS) of one or more candidate downlink stations corresponding to the candidate shared AP;

[0247] The maximum transmit power of the shared AP among the candidate shared APs is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites;

[0248] The downlink power margin of the candidate shared AP sending downlink DL physical layer protocol data unit (PPDU);

[0249] The minimum downlink power margin for the candidate shared AP to send DL PPDU;

[0250] Power adjustment preference, which is the power adjustment strategy favored by the candidate shared AP.

[0251] In some embodiments, the first information is carried in an action frame; or, the first information is carried in a control frame.

[0252] In some embodiments, the first information includes one or more first information fields, and one first information field corresponds to one candidate shared AP.

[0253] In some embodiments, 5. the method according to claim 4, characterized in that,

[0254] When there are multiple candidate shared APs, the first information includes multiple first information fields, and the multiple first information fields correspond one-to-one with the multiple candidate shared APs; or, when there is only one candidate shared AP, the first information includes one first information field, and the first information field corresponds to the candidate shared AP.

[0255] In some embodiments, the first information field includes one or more of the following fields:

[0256] The first candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0257] The first transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP;

[0258] The first maximum power field is used to indicate the maximum transmit power of the shared AP of the candidate shared AP, which is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites;

[0259] The first power margin field is used to indicate the downlink power margin corresponding to the candidate shared AP;

[0260] The first minimum power margin field is used to indicate the minimum downlink power margin corresponding to the candidate shared AP;

[0261] The power adjustment preference field is used to indicate the power adjustment preference corresponding to the candidate shared AP.

[0262] In some embodiments, when the first information is carried in the action frame, the first information field is a downlink power margin reporting information field, which is used to indicate the power-related information of the candidate shared AP; or, when the first information is carried in the control frame, the first information field is an identifier information field, which is used to indicate the transmission identifier of the candidate downlink station corresponding to the candidate shared AP.

[0263] In some embodiments, the device 1300 further includes a transmitting module (not shown).

[0264] The sending module is used to send second information to the one or more candidate shared APs, the second information being used to inquire whether the candidate shared APs participate in Cooperative Space Reuse (Co-SR).

[0265] In some embodiments, the first information is also used to instruct the one or more candidate shared APs to agree to participate in the Co-SR.

[0266] In some embodiments, when there are multiple candidate shared APs, the second information does not include power-related information corresponding to the shared AP; or, when there is only one candidate shared AP, the second information also includes power-related information corresponding to the shared AP.

[0267] In some embodiments, when there is only one candidate shared AP, whether the candidate shared AP participates in the Co-SR is determined by the candidate shared AP based on the second information, and the power-related information of the candidate shared AP included in the first information is adjusted based on the second information.

[0268] In some embodiments, when there is only one candidate shared AP and multiple candidate downlink sites for the candidate shared AP, the second information includes multiple first user information fields, and one first user information field corresponds to one candidate downlink site of the candidate shared AP.

[0269] In some embodiments, the first user information field includes one or more of the following fields:

[0270] The second candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0271] The second transmit power field is used to indicate the candidate transmit power of the current MCS of one or more candidate downlink stations corresponding to the candidate shared AP;

[0272] The second maximum power field is used to indicate the maximum transmit power of the candidate shared APs of the shared AP. The maximum transmit power of the candidate shared APs is determined based on the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and the path loss corresponding to the one or more candidate downlink sites.

[0273] The second power margin field is used to indicate the downlink power margin of the candidate shared AP when sending downlink DL PPDU;

[0274] The second minimum power margin field is used to indicate the minimum downlink power margin for the candidate shared AP to send DL PPDUs.

[0275] In some embodiments, when there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the second information includes a first Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence:

[0276] The candidate transmit power of the current MCS of the candidate downlink station corresponding to the candidate shared AP;

[0277] The maximum transmit power of the candidate shared AP is determined based on the candidate transmit power of the current MCS of the candidate downlink site corresponding to the candidate shared AP and the path loss corresponding to the candidate downlink site.

[0278] The downlink power margin of the candidate shared AP sending downlink DL PPDU;

[0279] The minimum downlink power margin for the candidate shared AP to send DL PPDU.

[0280] In some embodiments, when there are multiple candidate shared APs, whether a candidate shared AP participates in the Co-SR is determined by the shared AP based on the first information.

[0281] In some embodiments, the sending module is further configured to send third information to the target shared AP, the third information being used to trigger the target shared AP to participate in Co-SR, wherein the target shared AP is a shared AP participating in the Co-SR among the one or more candidate shared APs.

[0282] In some embodiments, the third information may further include power-related information corresponding to the shared AP, adjusted based on the first information.

[0283] In some embodiments, when there are multiple candidate downlink sites for the target shared AP, the third information includes multiple second user information fields, and each second user information field corresponds to a candidate downlink site of the target shared AP.

[0284] In some embodiments, the second user information field includes one or more of the following fields:

[0285] The third candidate site field is used to indicate the candidate downlink site for expected transmission of DL PPDU corresponding to the target shared AP;

[0286] The third transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink stations corresponding to the target shared AP;

[0287] The third maximum power field is used to indicate the target maximum transmit power of the shared AP, which is determined based on the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and / or the path loss corresponding to the one or more candidate downlink sites;

[0288] The third power margin field is used to indicate the downlink power margin of the target being sent downlink DL PPDU by the shared AP;

[0289] The third minimum power margin field is used to indicate the minimum downlink power margin by which the target is sent DL PPDU by the shared AP.

[0290] In some embodiments, when there is only one candidate downlink site for the shared AP, the third information includes a second Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence:

[0291] The target is the target transmit power of the current MCS of the candidate downlink station corresponding to the shared AP;

[0292] The maximum transmit power of the target shared AP is determined based on the target transmit power of the current MCS of the candidate downlink site corresponding to the target shared AP and / or the path loss corresponding to the candidate downlink site.

[0293] The target is the downlink power margin of the downlink DL PPDU sent by the shared AP;

[0294] The target is the minimum downlink power margin of the DL PPDU sent by the shared AP.

[0295] In some embodiments, the one or more candidate shared APs are selected from a set of multi-access points (Multi-APs).

[0296] The technical solution provided in this application embodiment involves candidate shared APs reporting power-related information to the sharing AP. The sharing AP then coordinates and adjusts the power-related information corresponding to the candidate shared APs, no longer strictly constraining the power of the shared APs and relaxing the control over their power. This allows more shared APs to participate in Co-SR, which is beneficial for maximizing the Co-SR capability of the multi-AP system.

[0297] Please refer to Figure 16, which shows a block diagram of a power indication device according to an embodiment of this application. This device has the functionality to implement the power indication method example described above; this functionality can be implemented in hardware or by hardware executing corresponding software. The device can be a candidate shared AP as described above, or it can be located within a candidate shared AP. As shown in Figure 16, the device 1600 may include a transmitting module 1610.

[0298] The sending module 1610 is used to send first information, the first information including power-related information corresponding to one or more of the candidate shared APs.

[0299] In some embodiments, the power-related information includes one or more of the following:

[0300] The target transmit power of the current modulation and coding scheme (MCS) of one or more candidate downlink stations corresponding to the candidate shared AP;

[0301] The maximum transmit power of the shared AP among the candidate shared APs is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites;

[0302] The downlink power margin of the candidate shared AP sending downlink DL physical layer protocol data unit (PPDU);

[0303] The minimum downlink power margin for the candidate shared AP to send DL PPDU;

[0304] Power adjustment preference, which is the power adjustment strategy favored by the candidate shared AP.

[0305] In some embodiments, the first information is carried in an action frame; or, the first information is carried in a control frame.

[0306] In some embodiments, the first information includes one or more first information fields, and one first information field corresponds to one candidate shared AP.

[0307] In some embodiments, when there are multiple candidate shared APs, the first information includes multiple first information fields, and the multiple first information fields correspond one-to-one with the multiple candidate shared APs; or, when there is only one candidate shared AP, the first information includes one first information field, and the first information field corresponds to the candidate shared AP.

[0308] In some embodiments, the first information field includes one or more of the following fields:

[0309] The first candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0310] The first transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP;

[0311] The first maximum power field is used to indicate the maximum transmit power of the shared AP of the candidate shared AP, which is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites;

[0312] The first power margin field is used to indicate the downlink power margin corresponding to the candidate shared AP;

[0313] The first minimum power margin field is used to indicate the minimum downlink power margin corresponding to the candidate shared AP;

[0314] The power adjustment preference field is used to indicate the power adjustment preference corresponding to the candidate shared AP.

[0315] In some embodiments, when the first information is carried in the action frame, the first information field is a downlink power headroom reporting information field, which is used to indicate the power-related information of the candidate shared AP; or...

[0316] When the first information is carried in the control frame, the first information field is an identifier information field, which is used to indicate the transmission identifier of the candidate downlink station corresponding to the candidate shared AP.

[0317] In some embodiments, the device 1600 further includes a receiving module (not shown).

[0318] The receiving module is used to receive second information sent by the shared AP, the second information being used to inquire whether the candidate shared AP participates in Cooperative Space Reuse (Co-SR).

[0319] In some embodiments, the first information is also used to instruct the one or more candidate shared APs to agree to participate in the Co-SR.

[0320] In some embodiments, when there are multiple candidate shared APs, the second information does not include power-related information corresponding to the shared AP; or, when there is only one candidate shared AP, the second information also includes power-related information corresponding to the shared AP.

[0321] In some embodiments, when there is only one candidate shared AP, whether the candidate shared AP participates in the Co-SR is determined by the candidate shared AP based on the second information, and the power-related information of the candidate shared AP included in the first information is adjusted based on the second information.

[0322] In some embodiments, when there is only one candidate shared AP and multiple candidate downlink sites for the candidate shared AP, the second information includes multiple first user information fields, and one first user information field corresponds to one candidate downlink site of the candidate shared AP.

[0323] In some embodiments, the first user information field includes one or more of the following fields:

[0324] The second candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU;

[0325] The second transmit power field is used to indicate the candidate transmit power of the current MCS of one or more candidate downlink stations corresponding to the candidate shared AP;

[0326] The second maximum power field is used to indicate the maximum transmit power of the candidate shared APs of the shared AP. The maximum transmit power of the candidate shared APs is determined based on the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and the path loss corresponding to the one or more candidate downlink sites.

[0327] The second power margin field is used to indicate the downlink power margin of the candidate shared AP when sending downlink DL PPDU;

[0328] The second minimum power margin field is used to indicate the minimum downlink power margin for the candidate shared AP to send DL PPDUs.

[0329] In some embodiments, when there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the second information includes a first Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence:

[0330] The candidate transmit power of the current MCS of the candidate downlink station corresponding to the candidate shared AP;

[0331] The maximum transmit power of the candidate shared AP is determined based on the candidate transmit power of the current MCS of the candidate downlink site corresponding to the candidate shared AP and the path loss corresponding to the candidate downlink site.

[0332] The downlink power margin of the candidate shared AP sending downlink DL PPDU;

[0333] The minimum downlink power margin for the candidate shared AP to send DL PPDU.

[0334] In some embodiments, when there are multiple candidate shared APs, whether a candidate shared AP participates in the Co-SR is determined by the shared AP based on the first information.

[0335] In some embodiments, the candidate shared AP is the target shared AP, and the receiving module is further configured to receive third information sent by the sharing AP, the third information being used to trigger the target shared AP to participate in Co-SR, wherein the target shared AP is a shared AP participating in the Co-SR among the one or more candidate shared APs.

[0336] In some embodiments, the third information may further include power-related information corresponding to the shared AP, adjusted based on the first information.

[0337] In some embodiments, when there are multiple candidate downlink sites for the target shared AP, the third information includes multiple second user information fields, and each second user information field corresponds to a candidate downlink site of the target shared AP.

[0338] In some embodiments, the second user information field includes one or more of the following fields:

[0339] The third candidate site field is used to indicate the candidate downlink site for expected transmission of DL PPDU corresponding to the target shared AP;

[0340] The third transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink stations corresponding to the target shared AP;

[0341] The third maximum power field is used to indicate the target maximum transmit power of the shared AP, which is determined based on the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and / or the path loss corresponding to the one or more candidate downlink sites;

[0342] The third power margin field is used to indicate the downlink power margin of the target being sent downlink DL PPDU by the shared AP;

[0343] The third minimum power margin field is used to indicate the minimum downlink power margin by which the target is sent DL PPDU by the shared AP.

[0344] In some embodiments, when there is only one candidate downlink site for the shared AP, the third information includes a second Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence:

[0345] The target is the target transmit power of the current MCS of the candidate downlink station corresponding to the shared AP;

[0346] The maximum transmit power of the target shared AP is determined based on the target transmit power of the current MCS of the candidate downlink site corresponding to the target shared AP and / or the path loss corresponding to the candidate downlink site.

[0347] The target is the downlink power margin of the downlink DL PPDU sent by the shared AP;

[0348] The target is the minimum downlink power margin of the DL PPDU sent by the shared AP.

[0349] In some embodiments, the one or more candidate shared APs are selected from a set of multi-access points (Multi-APs).

[0350] The technical solution provided in this application embodiment involves candidate shared APs reporting power-related information to the sharing AP. The sharing AP then coordinates and adjusts the power-related information corresponding to the candidate shared APs, no longer strictly constraining the power of the shared APs and relaxing the control over their power. This allows more shared APs to participate in Co-SR, which is beneficial for maximizing the Co-SR capability of the multi-AP system.

[0351] It should be noted that the device provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0352] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0353] Please refer to Figure 17, which shows a schematic diagram of a communication device provided in one embodiment of this application. The communication device can be a terminal device or a network device as described above. The communication device 1700 may include a processor 1701, a transceiver 1702, and a memory 1703. The transceiver 1702 is used to implement sending or receiving functions, such as implementing the functions of the receiving module 1510 or the sending module 1610 described above. The processor 1701 can be used to implement other processing functions or control sending and / or receiving.

[0354] The processor 1701 includes one or more processing cores, and the processor 1701 executes various functional applications and information processing by running software programs and modules.

[0355] Transceiver 1702 may include a receiver and a transmitter, for example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0356] The memory 1703 can be connected to the processor 1701 and the transceiver 1702.

[0357] The memory 1703 can be used to store a computer program executed by the processor, and the processor 1701 is used to execute the computer program to implement the various steps in the above method embodiments.

[0358] In some embodiments, when the communication device 1700 is a shared AP, the transceiver 1702 is used to receive first information, the first information including power-related information corresponding to one or more candidate shared APs respectively.

[0359] In some embodiments, when the communication device 1700 is a candidate shared AP, the transceiver 1702 is used to send first information, the first information including power-related information corresponding to one or more of the candidate shared APs respectively.

[0360] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0361] Furthermore, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, statically accessible memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0362] This application embodiment also provides a computer-readable storage medium storing a computer program for execution by a processor to implement the power indication method on the shared AP side or the power indication method on the candidate shared AP side. Optionally, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0363] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running, it is used to implement the power indication method on the shared AP side or the power indication method on the candidate shared AP side.

[0364] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. A processor reads and executes the computer program from the computer-readable storage medium to implement the power indication method on the shared AP side or the power indication method on the candidate shared AP side.

[0365] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0366] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0367] In some embodiments of this application, "predefined" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and APs). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0368] In some embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as LTE protocols, NR protocols, and related protocols applied in future communication systems. This application does not limit the scope of these protocols.

[0369] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0370] In this article, "greater than or equal to" can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0371] Furthermore, the step numbers described herein are merely illustrative of one possible execution order between steps. In some other embodiments, the steps may not be executed in the order of their numbers, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this.

[0372] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0373] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A power indication method, characterized in that, The method is performed by a shared access point (AP), and the method includes: Receive first information, which includes power-related information corresponding to one or more candidate shared APs.

2. The method according to claim 1, characterized in that, The power-related information includes one or more of the following: The target transmit power of the current modulation and coding scheme (MCS) of one or more candidate downlink stations corresponding to the candidate shared AP; The maximum transmit power of the shared AP among the candidate shared APs is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites; The downlink power margin of the candidate shared AP sending downlink DL physical layer protocol data unit (PPDU); The minimum downlink power margin for the candidate shared AP to send DL PPDU; Power adjustment preference, which is the power adjustment strategy favored by the candidate shared AP.

3. The method according to claim 1 or 2, characterized in that, The first information is carried in the action frame; or, The first information is carried in the control frame.

4. The method according to claim 3, characterized in that, The first information includes one or more first information fields, and each first information field corresponds to a candidate shared AP.

5. The method according to claim 4, characterized in that, When there are multiple candidate shared APs, the first information includes multiple first information fields, and each of the multiple first information fields corresponds one-to-one with the multiple candidate shared APs; or... If there is only one candidate shared AP, the first information includes a first information field, which corresponds to the candidate shared AP.

6. The method according to claim 4 or 5, characterized in that, The first information field includes one or more of the following fields: The first candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU; The first transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP; The first maximum power field is used to indicate the maximum transmit power of the shared AP of the candidate shared AP, which is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites; The first power margin field is used to indicate the downlink power margin corresponding to the candidate shared AP; The first minimum power margin field is used to indicate the minimum downlink power margin corresponding to the candidate shared AP; The power adjustment preference field is used to indicate the power adjustment preference corresponding to the candidate shared AP.

7. The method according to any one of claims 4 to 6, characterized in that, When the first information is carried in the action frame, the first information field is a downlink power margin reporting information field, which is used to indicate the power-related information of the candidate shared AP. or, When the first information is carried in the control frame, the first information field is an identifier information field, which is used to indicate the transmission identifier of the candidate downlink station corresponding to the candidate shared AP.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: Send a second message to the one or more candidate shared APs, the second message being used to inquire whether the candidate shared APs participate in Co-Spatial Reuse (Co-SR).

9. The method according to claim 8, characterized in that, The first information is also used to instruct the one or more candidate shared APs to agree to participate in the Co-SR.

10. The method according to claim 8 or 9, characterized in that, If there are multiple candidate shared APs, the second information does not include power-related information corresponding to the shared APs; or... If there is only one candidate shared AP, the second information also includes power-related information corresponding to the shared AP.

11. The method according to claim 10, characterized in that, When there is only one candidate shared AP, whether the candidate shared AP participates in the Co-SR is determined by the candidate shared AP based on the second information, and the power-related information of the candidate shared AP included in the first information is adjusted based on the second information.

12. The method according to claim 10 or 11, characterized in that, When there is only one candidate shared AP and multiple candidate downlink sites for the candidate shared AP, the second information includes multiple first user information fields, and each first user information field corresponds to one candidate downlink site of the candidate shared AP.

13. The method according to claim 12, characterized in that, The first user information field includes one or more of the following fields: The second candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU; The second transmit power field is used to indicate the candidate transmit power of the current MCS of one or more candidate downlink stations corresponding to the candidate shared AP; The second maximum power field is used to indicate the maximum transmit power of the candidate shared APs of the shared AP. The maximum transmit power of the candidate shared APs is determined based on the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and the path loss corresponding to the one or more candidate downlink sites. The second power margin field is used to indicate the downlink power margin of the candidate shared AP when sending downlink DL PPDU; The second minimum power margin field is used to indicate the minimum downlink power margin for the candidate shared AP to send DL PPDUs.

14. The method according to claim 10 or 11, characterized in that, When there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the second information includes a first Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence: The candidate transmit power of the current MCS of the candidate downlink station corresponding to the candidate shared AP; The maximum transmit power of the candidate shared AP is determined based on the candidate transmit power of the current MCS of the candidate downlink site corresponding to the candidate shared AP and the path loss corresponding to the candidate downlink site. The downlink power margin of the candidate shared AP sending downlink DL PPDU; The minimum downlink power margin for the candidate shared AP to send DL PPDU.

15. The method according to claim 10, characterized in that, When there are multiple candidate shared APs, whether a candidate shared AP participates in the Co-SR is determined by the shared AP based on the first information.

16. The method according to any one of claims 1 to 15, characterized in that, The method further includes: A third message is sent to the target shared AP, the third message being used to trigger the target shared AP to participate in Co-SR, the target shared AP being a shared AP among the one or more candidate shared APs that participates in the Co-SR.

17. The method according to claim 16, characterized in that, The third information also includes power-related information corresponding to the shared AP, adjusted based on the first information.

18. The method according to claim 17, characterized in that, When there are multiple candidate downlink sites for the target shared AP, the third information includes multiple second user information fields, and each second user information field corresponds to one candidate downlink site of the target shared AP.

19. The method according to claim 18, characterized in that, The second user information field includes one or more of the following fields: The third candidate site field is used to indicate the candidate downlink site for expected transmission of DL PPDU corresponding to the target shared AP; The third transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink stations corresponding to the target shared AP; The third maximum power field is used to indicate the target maximum transmit power of the shared AP, which is determined based on the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and / or the path loss corresponding to the one or more candidate downlink sites; The third power margin field is used to indicate the downlink power margin of the target being sent downlink DL PPDU by the shared AP; The third minimum power margin field is used to indicate the minimum downlink power margin by which the target is sent DL PPDU by the shared AP.

20. The method according to claim 16, characterized in that, When there is only one candidate downlink site for the shared AP, the third information includes a second Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence: The target is the target transmit power of the current MCS of the candidate downlink station corresponding to the shared AP; The maximum transmit power of the target shared AP is determined based on the target transmit power of the current MCS of the candidate downlink site corresponding to the target shared AP and / or the path loss corresponding to the candidate downlink site. The target is the downlink power margin of the downlink DL PPDU sent by the shared AP; The target is the minimum downlink power margin of the DL PPDU sent by the shared AP.

21. The method according to any one of claims 1 to 20, characterized in that, The one or more candidate shared APs are selected from the set of multi-access points (Multi-APs).

22. A power indication method, characterized in that, The method is performed by the candidate shared access point (AP), and the method includes: Send first information, which includes power-related information corresponding to one or more of the candidate shared APs.

23. The method according to claim 22, characterized in that, The power-related information includes one or more of the following: The target transmit power of the current modulation and coding scheme (MCS) of one or more candidate downlink stations corresponding to the candidate shared AP; The maximum transmit power of the shared AP among the candidate shared APs is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites; The downlink power margin of the candidate shared AP sending downlink DL physical layer protocol data unit (PPDU); The minimum downlink power margin for the candidate shared AP to send DL PPDU; Power adjustment preference, which is the power adjustment strategy favored by the candidate shared AP.

24. The method according to claim 22 or 23, characterized in that, The first information is carried in the action frame; or, The first information is carried in the control frame.

25. The method according to claim 24, characterized in that, The first information includes one or more first information fields, and each first information field corresponds to a candidate shared AP.

26. The method according to claim 24, characterized in that, When there are multiple candidate shared APs, the first information includes multiple first information fields, and each of the multiple first information fields corresponds one-to-one with the multiple candidate shared APs; or... If there is only one candidate shared AP, the first information includes a first information field, which corresponds to the candidate shared AP.

27. The method according to claim 25 or 26, characterized in that, The first information field includes one or more of the following fields: The first candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU; The first transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the candidate shared AP; The first maximum power field is used to indicate the maximum transmit power of the shared AP of the candidate shared AP, which is determined based on the target transmit power of the current MCS of the one or more candidate downlink sites and / or the path loss corresponding to the one or more candidate downlink sites; The first power margin field is used to indicate the downlink power margin corresponding to the candidate shared AP; The first minimum power margin field is used to indicate the minimum downlink power margin corresponding to the candidate shared AP; The power adjustment preference field is used to indicate the power adjustment preference corresponding to the candidate shared AP.

28. The method according to any one of claims 25 to 27, characterized in that, When the first information is carried in the action frame, the first information field is a downlink power margin reporting information field, which is used to indicate the power-related information of the candidate shared AP. or, When the first information is carried in the control frame, the first information field is an identifier information field, which is used to indicate the transmission identifier of the candidate downlink station corresponding to the candidate shared AP.

29. The method according to any one of claims 22 to 28, characterized in that, The method further includes: The system receives a second message from the shared AP, which is used to inquire whether the candidate shared AP participates in Cooperative Space Reuse (Co-SR).

30. The method according to claim 29, characterized in that, The first information is also used to instruct the one or more candidate shared APs to agree to participate in the Co-SR.

31. The method according to claim 29 or 30, characterized in that, If there are multiple candidate shared APs, the second information does not include power-related information corresponding to the shared APs; or... If there is only one candidate shared AP, the second information also includes power-related information corresponding to the shared AP.

32. The method according to claim 31, characterized in that, When there is only one candidate shared AP, whether the candidate shared AP participates in the Co-SR is determined by the candidate shared AP based on the second information, and the power-related information of the candidate shared AP included in the first information is adjusted based on the second information.

33. The method according to claim 31 or 32, characterized in that, When there is only one candidate shared AP and multiple candidate downlink sites for the candidate shared AP, the second information includes multiple first user information fields, and each first user information field corresponds to one candidate downlink site of the candidate shared AP.

34. The method according to claim 33, characterized in that, The first user information field includes one or more of the following fields: The second candidate site field is used to indicate the candidate downlink site corresponding to the candidate shared AP that is expected to send DL PPDU; The second transmit power field is used to indicate the candidate transmit power of the current MCS of one or more candidate downlink stations corresponding to the candidate shared AP; The second maximum power field is used to indicate the maximum transmit power of the candidate shared APs of the shared AP. The maximum transmit power of the candidate shared APs is determined based on the candidate transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and the path loss corresponding to the one or more candidate downlink sites. The second power margin field is used to indicate the downlink power margin of the candidate shared AP when sending downlink DL PPDU; The second minimum power margin field is used to indicate the minimum downlink power margin for the candidate shared AP to send DL PPDUs.

35. The method according to claim 31 or 32, characterized in that, When there is only one candidate shared AP and only one candidate downlink site for the candidate shared AP, the second information includes a first Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence: The candidate transmit power of the current MCS of the candidate downlink station corresponding to the candidate shared AP; The maximum transmit power of the candidate shared AP is determined based on the candidate transmit power of the current MCS of the candidate downlink site corresponding to the candidate shared AP and the path loss corresponding to the candidate downlink site. The downlink power margin of the candidate shared AP sending downlink DL PPDU; The minimum downlink power margin for the candidate shared AP to send DL PPDU.

36. The method according to claim 31, characterized in that, When there are multiple candidate shared APs, whether a candidate shared AP participates in the Co-SR is determined by the shared AP based on the first information.

37. The method according to any one of claims 22 to 36, characterized in that, The candidate shared AP is the target shared AP, and the method further includes: The third information sent by the shared AP is received, which is used to trigger the target shared AP to participate in Co-SR. The target shared AP is the shared AP that participates in Co-SR among the one or more candidate shared APs.

38. The method according to claim 37, characterized in that, The third information also includes power-related information corresponding to the shared AP, adjusted based on the first information.

39. The method according to claim 36, characterized in that, When there are multiple candidate downlink sites for the target shared AP, the third information includes multiple second user information fields, and each second user information field corresponds to one candidate downlink site of the target shared AP.

40. The method according to claim 39, characterized in that, The second user information field includes one or more of the following fields: The third candidate site field is used to indicate the candidate downlink site for expected transmission of DL PPDU corresponding to the target shared AP; The third transmit power field is used to indicate the target transmit power of the current MCS of one or more candidate downlink stations corresponding to the target shared AP; The third maximum power field is used to indicate the target maximum transmit power of the shared AP, which is determined based on the target transmit power of the current MCS of one or more candidate downlink sites corresponding to the shared AP and / or the path loss corresponding to the one or more candidate downlink sites; The third power margin field is used to indicate the downlink power margin of the target being sent downlink DL PPDU by the shared AP; The third minimum power margin field is used to indicate the minimum downlink power margin by which the target is sent DL PPDU by the shared AP.

41. The method according to claim 38, characterized in that, When there is only one candidate downlink site for the shared AP, the third information includes a second Co-SR downlink power margin (DPH) field, which indicates one or more of the following in sequence: The target is the target transmit power of the current MCS of the candidate downlink station corresponding to the shared AP; The maximum transmit power of the target shared AP is determined based on the target transmit power of the current MCS of the candidate downlink site corresponding to the target shared AP and / or the path loss corresponding to the candidate downlink site. The target is the downlink power margin of the downlink DL PPDU sent by the shared AP; The target is the minimum downlink power margin of the DL PPDU sent by the shared AP.

42. The method according to any one of claims 22 to 40, characterized in that, The one or more candidate shared APs are selected from the set of multi-access points (Multi-APs).

43. A wireless communication device, characterized in that, The device includes: The receiving module is used to receive first information, which includes power-related information corresponding to one or more candidate shared access points (APs).

44. A wireless communication device, characterized in that, The device includes: The sending module is used to send first information, which includes power-related information corresponding to one or more candidate shared access points (APs).

45. A communication device, characterized in that, The communication device includes a processor, a memory, and a transceiver. The memory stores a computer program, and the processor executes the computer program to implement the method as claimed in any one of claims 1 to 21, or to implement the method as claimed in any one of claims 22 to 42.

46. ​​A computer-readable storage medium, characterized in that, The storage medium stores a computer program that is executed by a processor to implement the method as claimed in any one of claims 1 to 21, or to implement the method as claimed in any one of claims 22 to 42.

47. A chip, characterized in that, The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running, are used to implement the method as described in any one of claims 1 to 21, or to implement the method as described in any one of claims 22 to 42.

48. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium, which a processor reads from and executes to implement the method as claimed in any one of claims 1 to 21, or the method as claimed in any one of claims 22 to 42.

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