Power instruction method and communication device

Abstract

The present application provides a power indication method and a communication apparatus. The present application is applicable to wireless local area network systems supporting 802.11 series protocols, such as next-generation Wi-Fi protocols of IEEE 802.11ax, e.g., 802.11be, Wi-Fi 7, or EHT, and next-generation protocols of 802.11be, e.g., Wi-Fi 8, UHR, or Wi-Fi AI, and further applicable to UWB-based wireless personal area network systems, sensing systems, etc. The present application provides a power indication method and a communication apparatus. In the method, a transmitting end device generates a first frame including N pieces of first information, and the N pieces of first information can indicate maximum transmit PSDs corresponding to two types of BSS operating channel bandwidths. Different types of receiving end devices can obtain the maximum transmit PSDs corresponding to their unique BSS operating channel bandwidths, so that the transmission overhead is reduced when the maximum transmit PSDs corresponding to the two types of BSS operating channel bandwidths are reliably indicated.

Description

Technical Field

[0001] This application claims priority to Chinese Patent Application No. 202211510868.7, titled "POWER INDICATION METHOD AND COMMUNICATION APPARATUS", filed with the China National Intellectual Property Administration on November 29, 2022, which is incorporated herein by reference in its entirety.

[0002] This application relates to the field of communications, and more specifically, to a power indication method and a communication apparatus.

Background Art

[0003] When stations in a basic service set (BSS) communicate with each other, an access point (AP) station can notify all non-access point stations (non-AP STAs) of the maximum power spectral density (PSD) corresponding to the BSS operating channel. For example, the AP can broadcast a beacon frame or a probe response frame carrying a transmission power envelope element. Each non-AP STA can know the maximum transmission PSD corresponding to its own BSS operating channel bandwidth based on the transmission power envelope element.

[0004] However, in the current protocol, the transmission power envelope element is designed based on non-extremely high throughput (EHT) stations. In other words, the current transmission power envelope element can indicate the maximum transmission PSD corresponding to a continuous small-bandwidth interval, such as a bandwidth of 20 MHz, 40 MHz, or 80 MHz, that is, it can indicate the maximum transmission PSD corresponding to the non-EHT BSS operating channel bandwidth, but it cannot indicate the maximum transmission PSD corresponding to the ETH BSS operating channel bandwidth.

[0005] To indicate the maximum transmit PSD corresponding to the ETH BSS operating channel bandwidth, the current method involves the AP broadcasting another element indicating the maximum transmit PSD corresponding to the ETH BSS operating channel bandwidth. However, this method can cause confusion for non-ETH stations. For example, when a non-ETH station receives an element indicating the transmit power limit for the ETH BSS operating channel bandwidth, it may mistakenly assume that the element is used to replace a previously received element indicating the transmit power limit for the non-ETH BSS operating channel bandwidth. In addition, this method also incurs significant transmit overhead. Therefore, there is an urgent need for power indication methods and communication devices that reduce the transmit overhead when ensuring that the maximum transmit PSD corresponding to the two types of BSS operating channel bandwidths is reliably indicated. [Overview of the Initiative] [Means for solving the problem]

[0006] This application provides a power instruction method and communication apparatus for reducing transmission overhead when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably indicated.

[0007] According to a first embodiment, a communication method is provided. The method may be carried out by a transmitting end, or through a chip or circuit configured in a transmitting end device. This is not limited to the present application. For the sake of simplicity, an example in which the method is carried out by a transmitting end device is used below for illustrative purposes.

[0008] The method may include the steps of generating a first frame, wherein the first frame contains a first element, the first element contains N first pieces of information, the N first pieces of information each indicate the maximum transmit power spectral density (PSD) corresponding to N basic channels, the first X basic channels of the N basic channels correspond to basic channels in a first basic service set operating channel bandwidth, the (X+1)th to the Nth basic channels of the N basic channels are basic channels in a indicated bandwidth excluding X basic channels, the indicated bandwidth is different from the first basic service set operating channel bandwidth with respect to the value of N and the second basic service set operating channel bandwidth, and N and X are positive integers, with N being greater than X; and transmitting the first frame.

[0009] Under this technical approach, N first pieces of information are designed by defining the bandwidths to be shown so that the N first pieces of information can simultaneously show the maximum transmit PSD corresponding to the fundamental channel in two types of BSS operating channel bandwidths. Different types of receiving end devices, such as both EHT and non-EHT stations, can obtain the maximum transmit PSD corresponding to the fundamental channel in their own BSS operating channel bandwidths based on the N first pieces of information. This approach does not require the additional definition of multiple types of frames or elements to show the maximum transmit PSD corresponding to the fundamental channel in different BSS operating channel bandwidths, so as to reduce transmission overhead when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably shown.

[0010] It should be noted that the first basic service set operating channel bandwidth may differ from the second basic service set operating channel bandwidth in the following ways: the size of the first basic service set operating channel bandwidth may differ from the size of the second basic service set operating channel bandwidth, or the number of basic channels in the first basic service set operating channel bandwidth may differ from the number of basic channels in the second basic service set operating channel bandwidth. For example, the first basic service set operating channel bandwidth is a 40 MHz bandwidth containing two basic channels, and the second basic service set operating channel bandwidth is a 320 MHz bandwidth containing sixteen basic channels.

[0011] With respect to the first embodiment, in some implementations of the first embodiment, the basic channels in the second basic service set operating channel bandwidth include the basic channels in the first basic service set operating channel bandwidth.

[0012] With respect to the first embodiment, in some implementations of the first embodiment, the first X pieces of first information among N pieces of first information are sequentially sorted in ascending order of the frequency of the corresponding fundamental channel.

[0013] With respect to the first embodiment, in some implementations of the first embodiment, the (X+1)th to the Nth first information among the N first information pieces are sequentially sorted in ascending order of the frequency of the corresponding fundamental channel.

[0014] Based on this technical approach, these first pieces of information are rearranged so that the receiving end can determine the maximum transmit PSD corresponding to the basic channel based on the position of these first pieces of information, and no additional bits are required to indicate a specific correspondence between the basic channel and these first pieces of information, thereby further reducing transmission overhead.

[0015] With respect to the first embodiment, in some implementations of the first embodiment, N is equal to a first value, the indicated bandwidth is the second basic service set operating channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0016] With respect to the first embodiment, in some implementations of the first embodiment, N is less than the first value, the indicated bandwidth is the primary Z megahertz in the second basic service set operating channel bandwidth, where Z is equal to N multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0017] With respect to the first aspect, in some implementations of the first aspect, N is greater than a first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, the first Y of the N first pieces of information indicate the maximum transmit PSD corresponding to the Y basic channels included in the second basic service set operating channel bandwidth, Y is a positive integer, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0018] Based on this technical approach, the receiving end device can interpret the first information based on different values ​​of N to obtain the maximum transmit PSD corresponding to the fundamental channel within its intrinsic BSS operating channel bandwidth. The instruction scheme is flexible.

[0019] With respect to the first aspect, in some implementations of the first aspect, the (Y+1)th to the Nth first piece of information among the N pieces of first information are spares.

[0020] With respect to the first embodiment, in some implementations of the first embodiment, the bandwidth size of the basic channel is 20 megahertz (MHz).

[0021] With respect to the first embodiment, in some implementations of the first embodiment, the first element further includes a maximum transmit power count field, where the maximum transmit power count field indicates a value of N.

[0022] With respect to the first embodiment, in some implementations of the first embodiment, the first element further includes a maximum transmit power interpretation field, the value of which is 1 or 3.

[0023] With respect to the first embodiment, in some implementations of the first embodiment, the first element is a transmit power envelope element.

[0024] With respect to the first embodiment, in some implementations of the first embodiment, the first basic service set operating channel bandwidth is the non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is the EHT basic service set operating channel bandwidth.

[0025] With respect to the first embodiment, in some implementations of the first embodiment, the value of N is 2 to the power of n, where n is a non-negative integer.

[0026] According to a second embodiment, a communication method is provided. The method may be carried out by a receiving end, or through a chip or circuit configured in a receiving end device. This is not limited to the present application. For the sake of simplicity, an example in which the method is carried out by a first receiving end device is used below for illustrative purposes.

[0027] The method includes a step of receiving a first frame, where the first frame includes a first element, the first element includes N pieces of first information, the N pieces of first information respectively indicate the maximum transmission power spectral density (PSD) corresponding to N basic channels, the first X basic channels among the N basic channels correspond to the basic channels within the first basic service set operating channel bandwidth, the (X + 1)-th to N-th basic channels among the N basic channels are the basic channels within the indicated bandwidth excluding the X basic channels, the indicated bandwidth is related to the value of N and the second basic service set operating channel bandwidth, the second basic service set operating channel bandwidth is different from the first basic service set operating channel bandwidth, N and X are positive integers, and N is greater than X; and a step of determining, based on the first frame, the maximum transmission PSD corresponding to the basic channels within the second basic service set operating channel bandwidth.

[0028] The implementation form of the second aspect is the method of the first receiving-end device corresponding to the implementation form of the first aspect. For the technical effects of this implementation form, please refer to the description of the first aspect. Details will not be described again here.

[0029] Regarding the second aspect, in some implementation forms of the second aspect, the basic channels within the second basic service set operating channel bandwidth include the basic channels within the first basic service set operating channel bandwidth.

[0030] Regarding the second aspect, in some implementation forms of the second aspect, the first X pieces of the N pieces of first information are sequentially rearranged in ascending order of the frequencies of the corresponding basic channels.

[0031] Regarding the second aspect, in some implementation forms of the second aspect, the (X + 1)-th to N-th pieces of the N pieces of first information are sequentially rearranged in ascending order of the frequencies of the corresponding basic channels.

[0032] With respect to the second aspect, in some implementations of the second aspect, N is equal to the first value, the indicated bandwidth is the second basic service set operating channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0033] With respect to the second aspect, in some implementations of the second aspect, N is less than the first value, the indicated bandwidth is the primary Z megahertz in the second basic service set operating channel bandwidth, where Z is equal to N multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0034] With respect to the second aspect, in some implementations of the second aspect, N is greater than the first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, the first Y of the N first pieces of information indicate the maximum transmit PSD corresponding to the Y basic channels included in the second basic service set operating channel bandwidth, Y is a positive integer, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0035] Regarding the second aspect, in some implementations of the second aspect, the (Y+1)th to the Nth first piece of information among the N pieces of first information are spares.

[0036] Regarding the second aspect, in some implementations of the second aspect, the bandwidth size of the basic channel is 20 megahertz (MHz).

[0037] With respect to the second aspect, in some implementations of the second aspect, the first element further includes a maximum transmit power count field, where the maximum transmit power count field indicates a value of N.

[0038] With respect to the second aspect, in some implementations of the second aspect, the first element further includes a maximum transmit power interpretation field, the value of which is 1 or 3.

[0039] With respect to the second aspect, in some implementations of the second aspect, the first element is a transmit power envelope element.

[0040] With respect to the second aspect, in some implementations of the second aspect, the first basic service set operating channel bandwidth is the non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is the EHT basic service set operating channel bandwidth.

[0041] Regarding the second aspect, in some implementations of the second aspect, the value of N is 2 to the power of n, where n is a non-negative integer.

[0042] With respect to the second aspect, in some implementations of the second aspect, the first receiving end device is an EHT station.

[0043] According to a third aspect, a communication method is provided. The method may be carried out by a receiving end, or through a chip or circuit configured in a receiving end device. This is not limited to the present application. For the sake of simplicity, an example in which the method is carried out by a second receiving end device is used below for illustrative purposes.

[0044] The method includes the steps of: receiving a first frame, wherein the first frame contains a first element, the first element contains N first pieces of information, the N first pieces of information each indicate the maximum transmit power spectral density (PSD) corresponding to N basic channels, the first X basic channels of the N basic channels correspond to basic channels in a first basic service set operating channel bandwidth, the (X+1)th to the Nth basic channels of the N basic channels are basic channels in a indicated bandwidth excluding X basic channels, the indicated bandwidth is different from the first basic service set operating channel bandwidth with respect to a value of N and a second basic service set operating channel bandwidth, N and X are positive integers, and N is greater than X; and determining the maximum transmit PSD corresponding to a basic channel in the first basic service set operating channel bandwidth based on the first frame.

[0045] The third embodiment is a method for a second receiving end device corresponding to the first embodiment. For the technical effects of this embodiment, please refer to the description of the first embodiment. Further details will not be explained here.

[0046] With respect to the third aspect, in some implementations of the third aspect, the basic channels in the second basic service set operating channel bandwidth include the basic channels in the first basic service set operating channel bandwidth.

[0047] With respect to the third aspect, in some implementations of the third aspect, the first X pieces of first information among N pieces of first information are sequentially sorted in ascending order of the frequency of the corresponding fundamental channel.

[0048] With respect to the third aspect, in some implementations of the third aspect, the (X+1)th to the Nth first piece of information among the N first pieces of information are sequentially sorted in ascending order of the frequency of the corresponding fundamental channel.

[0049] With respect to the third aspect, in some implementations of the third aspect, N is equal to the first value, the indicated bandwidth is the second basic service set operating channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0050] With respect to the third aspect, in some implementations of the third aspect, N is less than the first value, the indicated bandwidth is the primary Z megahertz in the second basic service set operating channel bandwidth, where Z is equal to N multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0051] With respect to the third aspect, in some implementations of the third aspect, N is greater than the first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, the first Y of the N first pieces of information indicate the maximum transmit PSD corresponding to the Y basic channels included in the second basic service set operating channel bandwidth, Y is a positive integer, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0052] Regarding the third aspect, in some implementations of the third aspect, the (Y+1)th to the Nth first piece of information among the N pieces of first information are spares.

[0053] Regarding the third aspect, in some implementations of the third aspect, the bandwidth size of the basic channel is 20 megahertz (MHz).

[0054] With respect to the third aspect, in some implementations of the third aspect, the first element further includes a maximum transmit power count field, where the maximum transmit power count field indicates a value of N.

[0055] With respect to the third aspect, in some implementations of the third aspect, the first element further includes a maximum transmit power interpretation field, the value of which is 1 or 3.

[0056] With respect to the third aspect, in some implementations of the third aspect, the first element is a transmit power envelope element.

[0057] With respect to the third aspect, in some implementations of the third aspect, the first basic service set operating channel bandwidth is the non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is the EHT basic service set operating channel bandwidth.

[0058] Regarding the third aspect, in some implementations of the third aspect, the value of N is 2 to the power of n, where n is a non-negative integer.

[0059] With respect to the third aspect, in some implementations of the third aspect, the second receiving end device is a non-EHT station.

[0060] According to a fourth aspect, a communication method is provided. The method may be carried out by a transmitting end, or through a chip or circuit configured in a transmitting end device. This is not limited to the present application. For the sake of simplicity, an example in which the method is carried out by a transmitting end device is used below for illustrative purposes.

[0061] The method includes the steps of generating a first frame, wherein the first frame comprises a first element, the first element comprising P first information and Q second information, where each of the P first information represents the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, the Q second information represents the maximum transmit PSD corresponding to a basic channel in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers, the indicated bandwidth is different from the first basic service set operating channel bandwidth with respect to the value of M and the second basic service set operating channel bandwidth, M is equal to the sum of P and Q, M is a positive integer, and the first element further comprises third information and fourth information, where the third information represents the value of P and the fourth information represents the value of Q; and transmitting the first frame.

[0062] Based on a technical approach, the P first pieces of information and Q second pieces of information are defined such that they indicate the maximum transmit PSD corresponding to some or all of the fundamental channels in the second BSS operating channel bandwidth, and the Q second pieces of information are defined by designing the bandwidth to be shown, so that different types of receiving end devices, e.g., both EHT and non-EHT stations, can obtain the maximum transmit PSD corresponding to the fundamental channels in their own BSS operating channel bandwidth based on the first elements. In this approach, multiple types of frames or elements do not need to be additionally defined to indicate the maximum transmit PSD corresponding to the fundamental channels in different BSS operating channel bandwidths, so that the transmit overhead is reduced when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably shown. In addition, the value of P is shown based on a third piece of information, and the design of the first piece of information is more flexible, i.e., the way in which the first BSS operating channel bandwidth is shown is more flexible.

[0063] With respect to the fourth aspect, in some implementations of the fourth aspect, the basic channels in the second basic service set operating channel bandwidth include the basic channels in the first basic service set operating channel bandwidth.

[0064] With respect to the fourth aspect, in some implementations of the fourth aspect, the P pieces of first information are sequentially sorted in ascending order of the frequencies of the corresponding fundamental channels.

[0065] With respect to the fourth aspect, in some implementations of the fourth aspect, the Q pieces of second information are sequentially sorted in ascending order of the frequencies of the corresponding fundamental channels.

[0066] Based on this technical approach, these first and second pieces of information are sorted separately so that the receiving end can determine the maximum transmit PSD corresponding to the base channel based on the positions of these first and second pieces of information, and no additional bits are required to indicate a specific correspondence between the base channel and these pieces of information, thereby further reducing transmission overhead.

[0067] With respect to the fourth aspect, in some implementations of the fourth aspect, M is equal to the first value, the indicated bandwidth is the second basic service set operating channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0068] With respect to the fourth aspect, in some implementations of the fourth aspect, M is less than the first value, the indicated bandwidth is the primary Z megahertz in the second basic service set operating channel bandwidth, where Z is equal to M multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0069] With respect to the fourth aspect, in some implementations of the fourth aspect, M is greater than the first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, and the first S information items out of the M information items out of the P first information items and Q second information items in total each indicate the maximum transmit PSD corresponding to the S basic channels included in the second basic service set operating channel bandwidth, where S is a positive integer, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth, where S is greater than P.

[0070] Based on this technical approach, the receiving end device can interpret the first information based on different values ​​of N to obtain the maximum transmit PSD corresponding to the fundamental channel within its intrinsic BSS operating channel bandwidth. The instruction scheme is flexible.

[0071] Regarding the fourth aspect, in some implementations of the fourth aspect, the (S+1)th to (P+Q)th information among the M information in the P first information and Q second information in total is a spare.

[0072] Regarding the fourth aspect, in some implementations of the fourth aspect, the bandwidth size of the basic channel is 20 megahertz (MHz).

[0073] With respect to the fourth aspect, in some implementations of the fourth aspect, the first element further includes a maximum transmit power interpretation field, the value of which is 1 or 3.

[0074] With respect to the fourth aspect, in some implementations of the fourth aspect, the first element is a transmit power envelope element.

[0075] With respect to the fourth aspect, in some implementations of the fourth aspect, the first basic service set operating channel bandwidth is the non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is the EHT basic service set operating channel bandwidth.

[0076] Regarding the fourth aspect, in some implementations of the fourth aspect, the value of M is 2 to the power of m, where m is a non-negative integer.

[0077] According to a fifth aspect, a communication method is provided. The method may be carried out by a receiving end, or through a chip or circuit configured in a receiving end device. This is not limited to the present application. For the sake of simplicity, an example in which the method is carried out by a first receiving end device is used below for illustrative purposes.

[0078] The method includes the steps of: receiving a first frame, wherein the first frame comprises a first element, the first element comprising P first information and Q second information, where each of the P first information represents the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, the Q second information represents the maximum transmit PSD corresponding to a basic channel in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers; the first element further comprises a third information and a fourth information, where the third information represents a value of P, the fourth information represents a value of Q, and the indicated bandwidth is, with respect to a value of M and a second basic service set operating channel bandwidth, the second basic service set operating channel bandwidth being different from the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer; and determining, based on the first frame, the maximum transmit PSD corresponding to a basic channel in a second basic service set operating channel bandwidth.

[0079] With respect to the fifth aspect, in some implementations of the fifth aspect, the basic channels in the second basic service set operating channel bandwidth include the basic channels in the first basic service set operating channel bandwidth.

[0080] With respect to the fifth aspect, in some implementations of the fifth aspect, the P pieces of first information are sequentially sorted in ascending order of the frequencies of the corresponding fundamental channels.

[0081] With respect to the fifth aspect, in some implementations of the fifth aspect, the Q pieces of second information are sequentially sorted in ascending order of the frequencies of the corresponding fundamental channels.

[0082] With respect to the fifth aspect, in some implementations of the fifth aspect, M is equal to the first value, the indicated bandwidth is the second basic service set operating channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0083] With respect to the fifth aspect, in some implementations of the fifth aspect, M is less than the first value, the indicated bandwidth is the primary Z megahertz in the second basic service set operating channel bandwidth, where Z is equal to M multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0084] With respect to the fifth aspect, in some implementations of the fifth aspect, M is greater than the first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, and the first S information items out of the M information items out of the P first information items and Q second information items in total each indicate the maximum transmit PSD corresponding to the S basic channels included in the second basic service set operating channel bandwidth, where S is a positive integer, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth, where S is greater than P.

[0085] Regarding the fifth aspect, in some implementations of the fifth aspect, the (S+1)th to (P+Q)th information among the M information in the P first information and Q second information in total is a spare.

[0086] Regarding the fifth aspect, in some implementations of the fifth aspect, the bandwidth size of the basic channel is 20 megahertz (MHz).

[0087] With respect to the fifth aspect, in some implementations of the fifth aspect, the first element further includes a maximum transmit power interpretation field, the value of which is 1 or 3.

[0088] With respect to the fifth aspect, in some implementations of the fifth aspect, the first element is a transmit power envelope element.

[0089] With respect to the fifth aspect, in some implementations of the fifth aspect, the first basic service set operating channel bandwidth is the non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is the EHT basic service set operating channel bandwidth.

[0090] Regarding the fifth aspect, in some implementations of the fifth aspect, the value of M is 2 to the power of m, where m is a non-negative integer.

[0091] With respect to the fifth aspect, in some implementations of the fifth aspect, the first receiving end device is an EHT station.

[0092] According to a sixth aspect, a communication method is provided. The method may be carried out by a receiving end, or through a chip or circuit configured in a receiving end device. This is not limited to the present application. For the sake of simplicity, an example in which the method is carried out by a second receiving end device is used below for illustrative purposes.

[0093] The method includes the steps of: receiving a first frame, wherein the first frame comprises a first element, the first element comprising P first information and Q second information, where each of the P first information represents the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, and each of the Q second information represents the maximum transmit PSD corresponding to a basic channel in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers; the first element further comprises a third information and a fourth information, where the third information represents a value of P, the fourth information represents a value of Q, and the indicated bandwidth is, with respect to a value of M and the second basic service set operating channel bandwidth, the second basic service set operating channel bandwidth being different from the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer; and determining, based on the first frame, the maximum transmit PSD corresponding to a basic channel in a first basic service set operating channel.

[0094] With respect to the sixth aspect, in some implementations of the sixth aspect, the basic channels in the second basic service set operating channel bandwidth include the basic channels in the first basic service set operating channel bandwidth.

[0095] With respect to the sixth aspect, in some implementations of the sixth aspect, the P first pieces of information are sequentially sorted in ascending order of the frequencies of the corresponding fundamental channels.

[0096] With respect to the sixth aspect, in some implementations of the sixth aspect, the Q pieces of second information are sequentially sorted in ascending order of the frequencies of the corresponding fundamental channels.

[0097] With respect to the sixth aspect, in some implementations of the sixth aspect, M is equal to a first value, the indicated bandwidth is the second basic service set operating channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0098] With respect to the sixth aspect, in some implementations of the sixth aspect, M is less than the first value, the indicated bandwidth is the primary Z megahertz in the second basic service set operating channel bandwidth, where Z is equal to M multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

[0099] With respect to the sixth aspect, in some implementations of the sixth aspect, M is greater than the first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, and the first S information items out of the M information items out of the P first information items and Q second information items in total each indicate the maximum transmit PSD corresponding to the S basic channels included in the second basic service set operating channel bandwidth, where S is a positive integer, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth, where S is greater than P.

[0100] Regarding the sixth aspect, in some implementations of the sixth aspect, the (S+1)th to (P+Q)th information among the M information in the P first information and Q second information in total is a spare.

[0101] Regarding the sixth aspect, in some implementations of the sixth aspect, the bandwidth size of the basic channel is 20 megahertz (MHz).

[0102] With respect to the sixth aspect, in some implementations of the sixth aspect, the first element further includes a maximum transmit power interpretation field, the value of which is 1 or 3.

[0103] With respect to the sixth aspect, in some implementations of the sixth aspect, the first element is a transmit power envelope element.

[0104] With respect to the sixth aspect, in some implementations of the sixth aspect, the first basic service set operating channel bandwidth is the non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is the EHT basic service set operating channel bandwidth.

[0105] Regarding the sixth aspect, in some implementations of the sixth aspect, the value of M is 2 to the power of m, where m is a non-negative integer.

[0106] With respect to the sixth aspect, in some implementations of the sixth aspect, the first receiving end device is an EHT station.

[0107] According to the seventh aspect, a communication device is provided. The communication device includes a processing unit and a communication unit. The processing unit is configured to generate a first frame, the first frame comprising a first element, the first element comprising N pieces of first information, the N pieces of first information each indicating the maximum transmit power spectral density (PSD) corresponding to N basic channels, the first X basic channels of the N basic channels corresponding to basic channels in a first basic service set operating channel bandwidth, the (X+1)th to the Nth basic channels of the N basic channels being basic channels in a indicated bandwidth excluding the X basic channels, the indicated bandwidth being different from the first basic service set operating channel bandwidth with respect to a value of N and a second basic service set operating channel bandwidth, where N and X are positive integers and N is greater than X. The communication unit is configured to transmit the first frame.

[0108] The seventh embodiment is a communication device corresponding to the first embodiment. The communication device provided in the seventh embodiment can implement either the first embodiment or one of the possible implementations of the first embodiment.

[0109] According to the eighth aspect, a communication device is provided. The communication device includes a communication unit and a processing unit. The communication unit is configured to receive a first frame, the first frame comprising a first element, the first element comprising N pieces of first information, the N pieces of first information each indicating the maximum transmit power spectral density (PSD) corresponding to N basic channels, the first X basic channels of the N basic channels corresponding to basic channels in a first basic service set operating channel bandwidth, the (X+1)th to the Nth basic channels of the N basic channels being basic channels in a indicated bandwidth excluding the X basic channels, the indicated bandwidth being different from the first basic service set operating channel bandwidth with respect to a value of N and a second basic service set operating channel bandwidth, where N and X are positive integers and N is greater than X. The processing unit is configured to determine the maximum transmit PSD corresponding to the basic channels in the second basic service set operating channel bandwidth based on the first frame.

[0110] The implementation of the eighth embodiment is a communication device corresponding to the implementation of the second embodiment. The communication device provided in the eighth embodiment can implement either the second embodiment or any one of the possible implementations of the second embodiment.

[0111] According to the ninth aspect, a communication device is provided. The communication device includes a communication unit and a processing unit. The communication unit is configured to receive a first frame, the first frame comprising a first element, the first element comprising N pieces of first information, the N pieces of first information each indicating the maximum transmit power spectral density (PSD) corresponding to N basic channels, the first X basic channels of the N basic channels corresponding to basic channels in a first basic service set operating channel bandwidth, the (X+1)th to the Nth basic channels of the N basic channels being basic channels in a indicated bandwidth excluding the X basic channels, the indicated bandwidth being different from the first basic service set operating channel bandwidth with respect to a value of N and a second basic service set operating channel bandwidth, where N and X are positive integers and N is greater than X. The processing unit is configured to determine the maximum transmit PSD corresponding to the basic channels in the first basic service set operating channel bandwidth based on the first frame.

[0112] The implementation of the ninth embodiment is a communication device corresponding to the implementation of the third embodiment. The communication device provided in the ninth embodiment can implement either the third embodiment or any one of the possible implementations of the third embodiment.

[0113] According to a tenth aspect, a communication device is provided. The communication device includes a processing unit and a communication unit. The processing unit is configured to generate a first frame, the first frame comprising a first element, the first element comprising P pieces of first information and Q pieces of second information, where each of the P pieces of first information represents the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, and the Q pieces of second information representing the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers; the first element further comprising a third piece of information and a fourth piece of information, where the third piece of information represents the value of P, the fourth piece of information represents the value of Q, and the indicated bandwidth is with respect to the value of M and the second basic service set operating channel bandwidth, where the second basic service set operating channel bandwidth is different from the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer. The communication unit is configured to transmit the first frame.

[0114] The implementation of the tenth embodiment is a communication device corresponding to the implementation of the fourth embodiment. The communication device provided in the tenth embodiment can implement either the fourth embodiment or one of the possible implementations of the fourth embodiment.

[0115] According to the eleventh aspect, a communication device is provided. The communication device includes a communication unit and a processing unit. The communication unit receives a first frame, the first frame comprising a first element, the first element comprising P pieces of first information and Q pieces of second information, each of the P pieces of first information indicating the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, and the Q pieces of second information indicating the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers; the first element further comprising a third piece of information and a fourth piece of information, the third piece of information indicating the value of P, the fourth piece of information indicating the value of Q; and the indicated bandwidth being, with respect to the value of M and the second basic service set operating channel bandwidth, the second basic service set operating channel bandwidth being different from the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer. The processing unit is configured to determine the maximum transmit PSD corresponding to the base channel in the second base service set operating channel bandwidth based on the first frame.

[0116] The implementation of the eleventh embodiment is a communication device corresponding to the implementation of the fifth embodiment. The communication device provided in the eleventh embodiment can implement either the fifth embodiment or one of the possible implementations of the fifth embodiment.

[0117] According to the twelfth aspect, a communication device is provided. The communication device includes a communication unit and a processing unit. The communication unit receives a first frame, the first frame comprising a first element, the first element comprising P pieces of first information and Q pieces of second information, each of the P pieces of first information indicating the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, and the Q pieces of second information indicating the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers; the first element further comprising a third piece of information and a fourth piece of information, the third piece of information indicating the value of P, the fourth piece of information indicating the value of Q; and the indicated bandwidth being, with respect to the value of M and the second basic service set operating channel bandwidth, the second basic service set operating channel bandwidth being different from the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer. The processing unit is configured to determine the maximum transmit PSD corresponding to the basic channel within the first basic service set operating channel bandwidth, based on the first frame.

[0118] The twelfth embodiment is a communication device corresponding to the sixth embodiment. The communication device provided in the twelfth embodiment can implement either the sixth embodiment or one of the possible embodiments of the sixth embodiment.

[0119] According to the thirteenth aspect, a communication device is provided. The communication device is configured to implement a method provided in the first or fourth aspect. Specifically, the device may include a module configured to implement either the first aspect or one of a possible implementation of the first aspect, or either the fourth aspect or one of a possible implementation of the fourth aspect.

[0120] According to the 14th aspect, a communication device is provided. The device is configured to implement a method provided in the second or fifth aspect. Specifically, the device may include a module configured to implement either the second aspect or one of its possible implementations, or the fifth aspect or one of its possible implementations.

[0121] According to the 15th aspect, a communication device is provided. The device is configured to demonstrate a method provided in the third or sixth aspect. Specifically, the device may include a module configured to implement either the third aspect or one of its possible implementations, or the sixth aspect or one of its possible implementations.

[0122] According to the sixteenth aspect, a communication device including a processor is provided. The processor may be coupled to memory and configured to execute instructions in memory in order to carry out any one of the first aspect and any possible implementation of the first aspect, or any one of the fourth aspect and any possible implementation of the fourth aspect. Optionally, the device further includes memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0123] In some implementations, the device is a transmitting end device. When the device is a transmitting end device, the communication interface can be a transceiver or an input / output interface.

[0124] In another implementation, the device is a chip configured in the transmitting end device. When the device is a chip configured in the transmitting end device, the communication interface can be a transceiver or an input / output interface.

[0125] In yet another implementation, the device is a chip or a chip system.

[0126] Optionally, a transceiver can be a transceiver circuit. Optionally, an input / output interface can be an input / output circuit.

[0127] According to the 17th aspect, a communication device including a processor is provided. The processor may be configured to execute instructions in memory in order to carry out any one of the second aspect and any possible implementation of the second aspect, or any one of the fifth aspect and any possible implementation of the fifth aspect. Optionally, the device further includes memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0128] In some implementations, the device is a receiving end device. When the device is a receiving end device, the communication interface can be a transceiver or an input / output interface.

[0129] In another implementation, the device is a chip configured in the receiving end device. When the device is a chip configured in the receiving end device, the communication interface can be an input / output interface.

[0130] In yet another implementation, the device is a chip or a chip system.

[0131] Optionally, a transceiver can be a transceiver circuit. Optionally, an input / output interface can be an input / output circuit.

[0132] According to the 18th aspect, a communication device including a processor is provided. The processor may be configured to execute instructions in memory in order to carry out any one of the third aspect and any possible implementation of the third aspect, or any one of the sixth aspect and any possible implementation of the sixth aspect. Optionally, the device further includes memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0133] In some implementations, the device is a receiving end device. When the device is a receiving end device, the communication interface can be a transceiver or an input / output interface.

[0134] In another implementation, the device is a chip configured in the receiving end device. When the device is a chip configured in the receiving end device, the communication interface can be an input / output interface.

[0135] In yet another implementation, the device is a chip or a chip system.

[0136] Optionally, a transceiver can be a transceiver circuit. Optionally, an input / output interface can be an input / output circuit.

[0137] According to the 19th aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions, and when the computer instructions are executed by a device, the device is enabled to carry out a method in any one of the first to sixth aspects and any one of the possible implementations of the first to sixth aspects.

[0138] According to the 20th aspect, a computer program product including instructions is provided. The computer program product includes a computer program, and when the computer program is executed by a device, the device is enabled to carry out a method provided in any one of the first to sixth aspects and any one of the possible implementations of the first to sixth aspects.

[0139] According to the 21st embodiment, a communication system is provided which includes the transmitting end device, the first receiving end device, and the second receiving end device described above.

[0140] Optionally, the first receiving end device is a non-EHT station, and the second receiving end device is an EHT station. [Brief explanation of the drawing]

[0141] [Figure 1] This is a diagram illustrating an application scenario to which the embodiments of this application can be applied. [Figure 2] This is a schematic flowchart of the power instruction method according to the embodiment of this application. [Figure 3] This is a diagram showing the structure of the first element according to an embodiment of the present application. [Figure 4] This is a diagram of the bandwidth shown in the embodiment of this application. [Figure 5] This is a diagram showing the structure of the second element according to the embodiment of this application. [Figure 6] This is a schematic flowchart of another power instruction method according to an embodiment of this application. [Figure 7] This is a diagram of another shown bandwidth according to an embodiment of the present application. [Figure 8] This is a diagram showing the structure of a possible communication device according to an embodiment of this application. [Figure 9] This is a diagram showing the structure of a possible communication device according to an embodiment of this application. [Figure 10] This is a diagram showing the structure of a possible communication device according to an embodiment of this application. [Modes for carrying out the invention]

[0142] The technical approach of this application will be described below with reference to the attached drawings.

[0143] The technical solutions provided in embodiments of this application are applicable to wireless local area network (WLAN) scenarios. For example, IEEE 802.11-related standards such as 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, next-generation Wi-Fi protocols such as 802.11be, Wi-Fi 7, extremely high throughput (EHT), 802.11ad, 802.11ay, or next-generation protocols such as 802.11bf, 802.11be, and Wi-Fi 8 are supported. The technical measures provided in embodiments of this application may further be applied to ultra-wideband (UWB) based wireless personal area network systems, such as the 802.15 series standards, or to sensing systems, such as the 802.11bf series standards. The 802.11n standard is called high throughput (HT), the 802.11ac standard is called very high throughput (VHT), the 802.11ax standard is called high efficiency (HE), and the 802.11be standard is called extremely high throughput (EHT). 802.11bf includes two main types of standards: low frequency (Sub-7GHz) and high frequency (60GHz). Sub-7GHz is implemented primarily based on standards such as 802.11ac, 802.11ax, 802.11be, and the next-generation standard of 802.11be. 60GHz is primarily implemented based on standards such as 802.11ad, 802.11ay, and the next-generation standard of 802.11ay.802.11ad is sometimes called the directional multi-gigabit (DMG) standard, and 802.11ay is sometimes called the enhanced directional multi-gigabit (EDMG) standard.

[0144] While embodiments of this application are primarily described using examples employing WLAN networks, particularly networks to which the IEEE 802.11 system standard applies, those skilled in the art will readily understand that various aspects of the embodiments of this application can be extended to other networks using various standards or protocols, such as high-performance radio local area networks (HIPERLAN), wireless wide area networks (WWAN), wireless personal area networks (WPAN), or other known or future-developed networks. Accordingly, regardless of the coverage area used and the wireless access protocol used, various aspects provided in the embodiments of this application are applicable to any suitable wireless network.

[0145] The technical measures in the embodiments of this application can further be applied to various communication systems, such as WLAN communication systems, wireless fidelity (Wi-Fi) systems, long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunications systems (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) systems, i.e., new radio (NR), future 6th generation (6G) systems, Internet of Things (IoT) networks, or vehicle-to-everything (V2X).

[0146] The communication systems to which this application is applicable are merely illustrative examples and are not limited to those to which this application is applicable. This is described collectively in this specification. Further details are not described below.

[0147] Figure 1 is a diagram illustrating application scenarios to which embodiments of the present application can be applied. As shown in Figure 1, the resource configuration method provided in the present application is applicable to data communication between stations (STAs). A station may be an access point (AP) station or a non-access point station (non-AP STA). Access point stations and non-access point stations are abbreviated as AP stations and non-AP stations, respectively. Specifically, the measures in the present application are applicable to data communication between an AP and one or more non-AP stations (for example, data communication between AP1, non-AP STA1, and non-AP STA2), and are also applicable to data communication between APs (for example, data communication between AP1 and AP2) and data communication between non-AP STAs (for example, data communication between non-AP STA2 and non-AP STA3).

[0148] An access point may be a device used by terminals (e.g., mobile phones) to access a wired (or wireless) network, and is primarily deployed in homes, buildings, and campuses. Typical coverage radii are tens of meters or over 100 meters. Of course, access points may also be deployed outdoors as an alternative. An access point is equivalent to a bridge that connects wired and wireless networks. The main function of an access point is to connect various wireless network clients together and then connect the wireless network to Ethernet.

[0149] Specifically, an access point may be a terminal or network device with a Wi-Fi chip. Network devices may include servers, routers, switches, bridges, computers, mobile phones, relay stations, in-vehicle devices, wearable devices, network devices in 5G networks, network devices in future 6G networks, and network devices in public land mobile networks (PLMNs). This is not limited to the embodiments of this application. An access point may be a device that supports Wi-Fi standards. For example, an access point may alternatively support one or more standards of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family, such as 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax, 802.11be, 802.11ad, and 802.11ay.

[0150] Non-AP stations may include wireless communication chips, wireless sensors, wireless communication terminals, etc., and may also be called users, user equipment (UE), access terminals, subscriber units, subscriber stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication devices, user agents, or user equipment. Non-AP stations may include mobile phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, other processing devices connected to wireless modems, in-vehicle devices, Internet of Things devices, wearable devices, terminal devices in 5G networks, terminal devices in future 6G networks, terminal devices in PLMNs, etc. This is not limited to the embodiments of this application. Non-AP stations may be devices that support WLAN standards. For example, a non-AP station may support one or more standards of the IEEE 802.11 family, such as 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax, 802.11be, 802.11ad, and 802.11ay.

[0151] For example, non-AP stations could be mobile phones, tablet computers, set-top boxes, smart televisions, smart wearable devices, in-vehicle communication devices, computers, Internet of Things (IoT) nodes, sensors, smart cameras, smart remote controls, or smart water / electricity meters in smart homes, and sensors in smart cities.

[0152] An AP station or non-AP station may include a transmitter, receiver, memory, processor, etc. The transmitter and receiver are configured to transmit and receive packet structures, respectively. The memory is configured to store signaling information, pre-agreed and pre-configured values, etc. The processor is configured to parse signaling information, process related data, etc.

[0153] The communication systems to which this application is applicable are merely illustrative examples and are not limited to those to which this application is applicable. This is described collectively in this specification. Further details are not described below.

[0154] To facilitate understanding of the embodiments of this application, we will first explain some of the nouns or terms used in this application.

[0155] 1. Basic Service Set (BSS)

[0156] A BSS is used to describe a group of devices that can communicate with each other in a WLAN. A WLAN can contain multiple BSSs. A single BSS can contain multiple stations (STAs). A station can be an AP STA or a non-AP STA. Optionally, a single BSS can contain one AP and multiple non-AP STAs associated with that AP.

[0157] 2. Basic Channel

[0158] A basic channel can be a channel with a bandwidth of 20 megahertz (MHz) according to current standards. A single BSS operating channel bandwidth can be formed by one or more 20 MHz basic channels. For example, a single BSS operating channel with a channel bandwidth of 160 MHz may contain eight consecutive basic channels.

[0159] In the current protocol, multiple basic channels within a single BSS operating channel bandwidth may be used to jointly transmit data and implement a larger channel bandwidth. For example, a single BSS operating channel bandwidth may include a primary 20MHz channel (P20), a secondary 20MHz channel (S20), a secondary 40MHz channel (S40), a secondary 80MHz channel (S80), or a secondary 160MHz channel (S160). The primary 20MHz channel and secondary 20MHz channels may form a primary 40MHz channel, the primary 20MHz channel, the secondary 20MHz channel, and the secondary 40MHz channel may form a primary 80MHz channel, and the primary 20MHz channel, the secondary 20MHz channel, the secondary 40MHz channel, and the secondary 80MHz channel may form a primary 160MHz channel.

[0160] In the current protocol, to avoid interference with other stations operating in the 5GHz or 6GHz frequency band, one BSS operating channel bandwidth may support static puncturing, meaning that one or more fundamental channels within the BSS operating channel are punctured channels, and data is transmitted on the channels within the BSS operating channel excluding the punctured channels. For example, in a BSS operating channel with a channel bandwidth of 160MHz containing eight consecutive fundamental channels, six fundamental channels are used for data transmission, and two fundamental channels are punctured channels.

[0161] 3. EHT stations and non-EHT stations

[0162] An EHT station may be a non-AP STA that supports the EHT protocol. EHT stations support very large bandwidths, such as 320 MHz. These very large bandwidths supported by ETH devices are sometimes referred to as the ETH BSS operating channel bandwidth or ETH BSS channel bandwidth. Alternatively, EHT stations may support bandwidth discontinuities; that is, the ETH BSS operating channel bandwidth may support static puncturing.

[0163] A non-EHT station may be a non-AP STA that does not support the EHT protocol, or a station that cannot identify very large bandwidths and / or discontinuous channel bandwidths, such as a high-throughput (HT) station. In other words, based on the processing logic of a non-EHT station, it is unable to correctly interpret information about the EHT BSS operating channel bandwidth.

[0164] It should be noted that a single BSS may include stations of the same type or different types. For example, a single BSS may include both ETH stations and non-ETH stations. Different stations may support different BSS operating channel bandwidths. For example, an ETH station may support bandwidths of 20 MHz, 40 MHz, 80 MHz, 160 MHz, or 320 MHz, while a non-ETH station may support bandwidths of 20 MHz, 40 MHz, 80 MHz, or 160 MHz. For simplicity of explanation, in this embodiment of the present application, after an ETH AP establishes a BSS, the BSS operating channel bandwidth required for an EHT station is referred to as the ETH BSS operating channel bandwidth, and the BSS operating channel bandwidth required for a non-EHT station is referred to as the non-ETH BSS operating channel bandwidth.

[0165] 4. Equivalent isotropic radiated power (EIRP) and power spectral density (PSD)

[0166] EIRP can be the product of the power supplied to the antenna by the wireless transmitting end device and the absolute gain of the antenna in a given direction. PSD can indicate a correspondence between frequency and transmit power. For example, the power of each unit frequency wave may be obtained after the power spectral density is multiplied by an appropriate coefficient. When stations in a BSS communicate with each other, the AP can inform all non-AP STAs of the transmit power limit applicable to the BSS operating channel bandwidth, i.e., the maximum transmit EIRP or PSD, so that each non-AP STA can know the transmit power limit for its own BSS operating channel bandwidth.

[0167] In the current protocol, the AP notifies non-AP STAs of the transmit power limits applicable to the BSS operating channel bandwidth by broadcasting the transmit power envelope element. However, the current transmit power envelope element is designed based on non-ETH stations and cannot indicate the transmit power limits for ETH BSS operating channel bandwidth.

[0168] This application provides a power instruction method and a communication device. Since the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is indicated in a single element, transmission overhead can be reduced when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably indicated. The power instruction method will now be described with reference to Figures 2 through 7.

[0169] Figure 2 is a schematic flowchart of the power instruction method according to the embodiment of this application.

[0170] S210: The transmitting end device generates the first frame #1.

[0171] The transmitting end device may be an AP as shown in Figure 1. Optionally, the transmitting end device may also be an EHT AP that supports the EHT protocol. An EHT AP can transmit the first frame #1 to multiple different types of receiving end devices. Receiving end devices may include EHT stations and non-EHT stations. For a more detailed description of the transmitting and receiving end devices, please refer to the description above. Further details are not provided here.

[0172] The first frame #1 contains the first element #1, which contains N pieces of first information #1, each representing the maximum transmit power spectral density (PSD) corresponding to the N basic channels, the first X basic channels of the N basic channels corresponding to the basic channels in the first basic service set operating channel bandwidth, and the (X+1)th to Nth basic channels of the N basic channels corresponding to the basic channels in the indicated bandwidth excluding the X basic channels, where the indicated bandwidth is different from the first basic service set operating channel bandwidth with respect to the value of N and the second basic service set operating channel bandwidth, and N and X are positive integers, with N being greater than X. Thus, the first frame #1 may represent both the maximum transmit PSD corresponding to the basic channels in the first basic service set operating channel bandwidth and the maximum transmit PSD corresponding to the basic channels in the second basic service set operating channel bandwidth. The following describes in detail the first basic service set operating channel bandwidth, the second service set operating channel bandwidth, the first frame #1, the first element #1, the first information #1, and the bandwidth shown separately.

[0173] The first basic service set operating channel bandwidth (abbreviated as the first BSS operating channel bandwidth) may differ from the second basic service set operating channel bandwidth (the second BSS operating channel bandwidth) if: the size of the first BSS operating channel bandwidth differs from the size of the second BSS operating channel bandwidth, or the number of basic channels in the first BSS operating channel bandwidth differs from the number of basic channels in the second BSS operating channel bandwidth. For example, the first BSS operating channel bandwidth is a 40 MHz bandwidth containing two basic channels, and the second BSS operating channel bandwidth is a 320 MHz bandwidth containing sixteen basic channels.

[0174] Optionally, the fundamental channel in the second BSS operating channel bandwidth includes the fundamental channel in the first BSS operating channel bandwidth. Optionally, the bandwidth size of the fundamental channel is 20 MHz. Alternatively, the first BSS operating channel bandwidth is included in the second BSS operating channel bandwidth.

[0175] For example, if the size of the second BSS operating channel bandwidth is 320 MHz, the first BSS operating channel bandwidth is a portion of the 320 MHz bandwidth, for example, 80 MHz. In other words, if the second BSS operating channel bandwidth includes 16 basic channels 1 through 16, then the first BSS operating channel bandwidth includes a portion of the 16 basic channels. For example, basic channels 7 through 10 form one first BSS operating channel bandwidth of 80 MHz.

[0176] Optionally, the first BSS operating channel bandwidth is a non-EHT operating channel bandwidth, and the second BSS operating channel bandwidth is an EHT operating channel bandwidth. For explanations of the non-EHT operating channel bandwidth and the EHT operating channel bandwidth, please refer to the explanation above. Note that the first BSS operating channel bandwidth and the second BSS operating channel bandwidth may be alternative channel bandwidths having corresponding characteristics, which will be defined later. This is not particularly limited in this application. To simplify understanding of this embodiment of this application, the explanation below will be provided by using an example in which the first BSS operating channel bandwidth is a non-EHT operating channel bandwidth and the second BSS operating channel bandwidth is an EHT operating channel bandwidth. The following explanation of the non-EHT operating channel bandwidth may apply to the first BSS operating channel bandwidth, and the following explanation of the EHT operating channel bandwidth may apply to the second BSS operating channel bandwidth.

[0177] Optionally, the transmitting end device broadcasts information indicating that the EHT BSS operating channel bandwidth is different from the non-EHT BSS operating channel bandwidth, so that the receiving end device may know, based on this information, that the EHT BSS operating channel bandwidth is different from the non-EHT BSS operating channel bandwidth, and thus need to interpret N first pieces of information #1 in different ways. Alternatively, the receiving end device may, by default, assume that the EHT BSS operating channel bandwidth is different from the non-EHT BSS operating channel bandwidth. This is not particularly limited in this application.

[0178] The first frame #1 may be a management frame generated when a transmitting end device establishes a BSS, such as a beacon frame or probe response frame. The transmitting end device may establish communication relationships with multiple receiving end devices by broadcasting the first frame #1. The multiple receiving end devices may include EHT stations and non-EHT stations.

[0179] The first frame #1 may include a first element #1, which may represent a transmit power envelope corresponding to the fundamental channel in the BSS operating channel bandwidth. For example, the first element #1 may be a transmit power envelope element. It should be understood that the first element #1 may, as will be defined, be alternative to the first element #1, which may be used to implement the corresponding function. To simplify understanding of this embodiment of the present application, the following explanation is provided by using an example in which the first element #1 is a transmit power envelope element.

[0180] To facilitate understanding of this embodiment of the present application, an example of a transmit power envelope element is described below with reference to Figure 3. Please refer to Figure 3. A transmit power envelope element may include four fields: a first field which is an element identifier field, a second field which is a length field, a third field which is a transmit power information field, and a fourth field which is a maximum transmit power field. The element identifier field identifies the transmit power envelope element, and the length field indicates the total length of the other fields that follow the length field and are within the transmit power envelope element. The transmit power information field and the maximum transmit power field indicate maximum transmit power information, e.g., maximum transmit PSD or EIRP, corresponding to at least one basic channel.

[0181] It should be noted that the size of the transmit power envelope element and the fields contained within the transmit power envelope element are not particularly limited in this application. For example, the element identifier field occupies 1 octet, the length field occupies 1 octet, the transmit power information field occupies 1 octet, and the octet occupied by the maximum transmit power relates to the number of first information #1.

[0182] Specifically, the transmit power information field may contain three subfields: the maximum transmit power count subfield, the maximum transmit power interpretation subfield, and the maximum transmit power category subfield. The maximum transmit power interpretation subfield and the maximum transmit power category subfield indicate the maximum transmit power information corresponding to at least one basic channel, and the maximum transmit power category subfield indicates the category to which the maximum transmit power applies. For example, this subfield indicates that the maximum transmit power indicated by the element applies to the default category. When the maximum transmit power interpretation subfield has a different meaning, the maximum transmit power count subfield also has a different meaning. This is explained in detail below.

[0183] It should be noted that the size of the transmit power information field and the sizes of the subfields included in the transmit power information field are not particularly limited in this application. For example, when the transmit power information field occupies one octet, the maximum transmit power quantity subfield may occupy 3 bits, the maximum transmit power interpretation subfield may occupy 3 bits, and the maximum transmit power type subfield may occupy 2 bits.

[0184] Different values ​​in the maximum transmit power interpretation subfield correspond to different interpretations. For example, Table 1 shows the interpretation methods for the maximum transmit power interpretation subfield.

[0185] [Table 1]

[0186] When the value of the Maximum Transmit Power Interpretation subfield is 0 or 2 (Case A), the Maximum Transmit Power Count subfield is used to describe the local EIRP or the regulatory client EIRP. When the value of the Maximum Transmit Power Interpretation subfield is 1 or 3 (Case B), the Maximum Transmit Power Interpretation subfield is used to describe the local EIRP PSD or the regulatory client EIRP PSD (or PSD for short). In other words, when the Maximum Transmit Power Interpretation subfield has a different value, the Maximum Transmit Power Count subfield also has a different meaning. This is explained in detail below.

[0187] When the first element #1 is a transmit power envelope element and the maximum transmit power information field represents a PSD, it can be understood that each of the N first information #1s is carried in each of the N subfields within the maximum transmit power information field. In this embodiment of the present application, descriptions of the subfields within the maximum transmit power information field may be applied to descriptions of the first information #1s. For example, descriptions of the first X subfields within the N subfields may be applied to descriptions of the first X first information #1s within the N first information #1s, and descriptions of the (X+1)th to Nth subfields within the N subfields may be applied to descriptions of the (X+1)th to Nth first information #1s within the N first information #1s. Optionally, each subfield within the maximum transmit power field occupies one octet.

[0188] Optionally, the first X first information #1s among the N first information #1s are sequentially sorted in ascending order of the corresponding fundamental channel frequencies. Optionally, the (X+1)th to the Nth first information #1s among the N first information #1s are sequentially sorted in ascending order of the corresponding fundamental channel frequencies. Therefore, the receiving end can determine the maximum transmit PSD corresponding to the fundamental channel based on the positions of these first information #1s, and no additional bits are required to indicate a specific correspondence between the fundamental channel and these first information #1s, thereby further reducing transmission overhead.

[0189] Case A: When the Maximum Transmit Power Interpretation subfield is set to 1 or 3, the Maximum Transmit Power Count subfield indicates the number of subfields (Maximum Transmit PSD subfields) included in the Maximum Transmit Power field. In other words, different values ​​of the Maximum Transmit Power Count subfield indicate the value of N. Optionally, the value of N is 0 or 2 to the power of n, where n is a non-negative integer. For example, Table 2 shows the interpretation method of the Maximum Transmit Power Count subfield for cases where the Maximum Transmit Power Interpretation subfield is set to 1 or 3.

[0190] [Table 2]

[0191] In other words, when the value of the Maximum Transmit Power Count subfield is not 0, the number of subfields included in the Maximum Transmit Power Count subfield is represented by N. When the value of the Maximum Transmit Power Count subfield is 0, i.e., when N is 0, it indicates that the Maximum Transmit Power Count field contains one subfield, which represents the maximum transmit PSD for any bandwidth within the BSS operating channel bandwidth. When the number of subfields N in the Maximum Transmit Power Count field is 1 or greater, each subfield in the Maximum Transmit Power Count field is used to describe the maximum transmit PSD for one basic channel.

[0192] The above describes the first frame #1 and the first element #1. The bandwidth shown is related to the value of N and the second BSS operating channel bandwidth. The following describes the bandwidth shown in different cases in relation to Figure 4.

[0193] Case 1:

[0194] When N is equal to the first value, the indicated bandwidth is the second BBS operating channel bandwidth. In other words, the indicated bandwidth can be the EHT BSS operating channel bandwidth.

[0195] The first value is the number of fundamental channels in the EHT BBS operating channel bandwidth. For example, if the EHT BSS operating channel bandwidths are 20MHz, 40MHz, 80MHz, 160MHz, and 320MHz, the first values ​​are 1, 2, 4, 8, and 16, respectively.

[0196] In other words, when the number of subfields is equal to the number of basic channels in the EHT BBS operating channel bandwidth, each subfield from the (X+1)th subfield to the Nth subfield in the maximum transmit power field may represent the maximum transmit PSD corresponding to the basic channels excluding the non-EHT BSS operating channel bandwidth.

[0197] See, for example, Figure 4. The EHT BSS operating channel bandwidth is 320 MHz and includes 16 fundamental channels numbered 1 to 16 in ascending order of frequency (i.e., the first value is equal to 16). Fundamental channels 7 and 8 are punctured channels. Fundamental channels 1 to 4 form secondary 80 MHz channels, channel bandwidths 5 and 6 form primary 40 MHz channels, and fundamental channels 9 to 16 form secondary 160 MHz channels. The non-EHT BSS operating channel bandwidth is 40 MHz and includes two fundamental channels, which are fundamental channels 5 and 6.

[0198] When N is equal to the first value of 16, the maximum transmit power field contains 16 subfields, the first two subfields each representing the maximum transmit PSD corresponding to the basic channels included in the non-EHT BSS operating channel (i.e., basic channels 5 and 6). The third through sixteenth subfields each represent the maximum transmit PSD corresponding to the basic channels in the EHT BSS operating channel bandwidth, excluding the basic channels included in the non-EHT BSS operating channel. In other words, the third through sixteenth subfields each represent the maximum transmit PSD corresponding to basic channels 1 through 4 and 7 through 16. It can be understood that basic channels 7 and 8 are punctured channels. Therefore, the meaning of the seventh and eighth subfields among the 16 subfields may be spare, or may be set to the minimum value of -128. In this case, it indicates that the 20 MHz channel is unavailable for transmission. Further details are not explained below.

[0199] Case 2:

[0200] When N is less than the first value, the bandwidth shown is the primary (N * fundamental channel bandwidth) MHz of the EHT BBS operating channel bandwidth.

[0201] For BSS operating channel bandwidths of 40MHz, 80MHz, 160MHz, or 320MHz, if N is greater than 0 and less than 2, 4, 8, or 16, respectively, and if N is equal to 1, 2, 4, or 8, respectively, the indicated bandwidths are primary 20MHz, primary 40MHz, primary 80MHz, or primary 160MHz, respectively.

[0202] In other words, when the number of subfields is less than the number of fundamental channels in an EHT BBS operating channel, each subfield from the (X+1)th subfield to the Nth subfield in the maximum transmit power field may represent a PSD corresponding to a fundamental channel in the indicated bandwidth, excluding the fundamental channels included in a non-EHT BSS operating channel.

[0203] For example, see Figure 4. In Example 2, when N is less than the first value 16, N may be equal to 8. In this case, the shown bandwidth is primary 160 MHz, and the maximum transmit power field includes eight subfields, the first two of which each represent the maximum transmit PSD corresponding to the fundamental channels in the non-EHT BSS operating channel bandwidth (i.e., fundamental channels 5 and 6). The third through eighth subfields each represent the maximum transmit PSD corresponding to the fundamental channels in the EHT BSS operating channel bandwidth excluding the fundamental channels included in the non-EHT BSS operating channel, i.e., the maximum transmit PSD corresponding to fundamental channels 1 through 4 and 7 and 8.

[0204] Since some basic channels may not have a maximum transmit PSD limit, or the maximum transmit PSD limit for a basic channel has been transmitted previously (which remains unchanged in this case), it may not be necessary to design additional subfields to indicate the maximum transmit PSD corresponding to a basic channel in this embodiment of the application. Note that there are no maximum transmit power subfields corresponding to basic channels that are not included in the indicated bandwidth but are included in the EHT BBS operating channel bandwidth. Therefore, transmission overhead can be reduced by reducing redundant subfields.

[0205] Case 3:

[0206] When N is greater than a first value, the indicated bandwidth is greater than the EHT BBS operating channel bandwidth, i.e., the number of subfields in the maximum transmit power field is greater than the number of basic channels included in the EHT BBS operating channel. The first Y subfields of the N subfields each represent the maximum transmit PSD corresponding to the Y basic channels included in the EHT BBS operating channel, where Y is a positive integer and Y is greater than X, i.e., the first Y subfields include the first X subfields described above. In other words, in this embodiment of the present application, the first X subfields of the N subfields (i.e., the first X pieces of first information of the N pieces of first information) may have two functions: to represent the maximum transmit PSD corresponding to the basic channels in the non-EHT BSS operating channel bandwidth, and to represent the maximum transmit PSD corresponding to the basic channels in the EHT BSS operating channel bandwidth. Therefore, it is not necessary to repeatedly design X subfields to represent the maximum transmit PSD corresponding to the basic channels in the non-EHT operating channel bandwidth and the maximum transmit PSD corresponding to the basic channels in the EHT operating channel bandwidth, respectively, thereby reducing transmit overhead.

[0207] See, for example, Figure 4. In Example 3, N is greater than the first value 16, and N may be equal to a value that is greater than 16, such as 32 or 64, which is a power of 2. The example in which N is equal to 32 is used. The Maximum Transmit Power field contains 32 subfields, the first 16 of which represent the Maximum Transmit PSD corresponding to the basic channels in the EHT BSS operating channel bandwidth. Basic channels 5 and 6 in the non-EHT BSS operating channel bandwidth are located in the first two subfields, and the 3rd through 16th subfields represent the Maximum Transmit PSD corresponding to basic channels 1 through 4 and 7 through 16, respectively. The 17th through 32nd subfields are spare.

[0208] Note that in the above-mentioned Examples 1 to 3, N is greater than X. When N is less than or equal to the number of fundamental channels X in the first BSS operating channel bandwidth, the bandwidth shown may be related to N and X (or the first BSS operating channel bandwidth). When N is less than or equal to X, this is explained in the following example.

[0209] Case a:

[0210] When N is equal to the second value, the indicated bandwidth is the non-EHT BSS operating channel bandwidth. The second value is X, the number of fundamental channels in the first BSS operating channel bandwidth. For example, if the non-EHT BSS operating channel bandwidths are 20 MHz, 40 MHz, 80 MHz, and 160 MHz, the second values ​​are 1, 2, 4, and 8, respectively.

[0211] Case b:

[0212] When N is less than the second value, the indicated bandwidth is the primary (N * primary channel bandwidth) MHz within the non-EHT BBS operating channel bandwidth. For example, for bandwidths of 40 MHz, 80 MHz, or 160 MHz, when N is greater than 0 and less than 2, 4, or 8, respectively, and when N is equal to 1, 2, or 4, respectively, the indicated bandwidths are primary 20 MHz, primary 40 MHz, or primary 80 MHz, respectively.

[0213] The above describes the indicated bandwidth, the number and arrangement of subfields in the maximum transmit power field (i.e., the number and arrangement of first information #1). In this embodiment of the present application, the N first information #1 are designed by defining the indicated bandwidth such that the N first information #1 can simultaneously indicate the maximum transmit PSD corresponding to the basic channel in two types of BSS operating channel bandwidths. Both EHT and non-EHT stations can obtain the maximum transmit PSD corresponding to the basic channel in their own BSS operating channel bandwidth based on the N first information #1, and may not need to define multiple frames or elements additionally. Thus, transmit overhead can be reduced when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably indicated.

[0214] In addition, the X fundamental channels within the non-EHT BSS operating channel bandwidth are also included in the EHT BSS operating channel bandwidth.

[0215] In addition, another method simply extends the transmit power envelope element. For example, a maximum transmit PSD subfield corresponding to each 20 MHz within the EHT BSS operating channel bandwidth excluding the non-EHT BSS operating channel bandwidth is added to the end of the element, or a maximum transmit EIRP subfield corresponding to the 320 MHz bandwidth is added. The element has only one field indicating the number of maximum transmit PSD subfields, but since this field currently indicates the number of maximum transmit PSD subfields corresponding to each of some or all of the 20 MHz within the non-EHT BSS bandwidth, the method cannot implement the function of carrying the maximum transmit PSD subfields corresponding to each 20 MHz in the EHT BSS operating channel bandwidth that is larger than the non-EHT BSS operating channel bandwidth. The reason why it is unnecessary to carry the maximum transmit PSD subfield corresponding to each additional 20 MHz is that no additional PSD limit is required to transmit PPDU at some of the 20 MHz. Therefore, this method lacks flexibility and leads to significant overhead. Compared to this method, this implementation has less overhead and greater flexibility because it does not require the transport of the maximum transmit PSD subfield corresponding to each additional 20 MHz.

[0216] Note that when the Maximum Transmit Power Interpretation subfield is set to 1 or 3, the meaning of the Maximum Transmit Power field is described. The case where the Maximum Transmit Power Interpretation subfield is set to 0 or 2, i.e., where the Maximum Transmit Power field indicates the EIRP corresponding to the channel, is explained below.

[0217] When the Maximum Transmit Power Interpretation subfield is set to 0 or 2, different values ​​in the Maximum Transmit Power Count subfield indicate different subfields included in the Maximum Transmit Power field. For example, Table 2 shows the interpretation of the Maximum Transmit Power Count subfield for cases where the Maximum Transmit Power Interpretation subfield is set to 0 or 2.

[0218] [Table 3]

[0219] In other words, the number of subfields included in the maximum transmit power field is related to the content and value of the maximum transmit power count subfield. For example, when the value of the maximum transmit power count subfield is 0, the maximum transmit power field contains one subfield, which is the maximum transmit power for a 20 MHz bandwidth. When the value of the maximum transmit power count subfield is 1, the maximum transmit power subfield contains two subfields. One of these subfields is the maximum transmit power corresponding to a 20 MHz bandwidth channel, and the other is the maximum transmit power corresponding to a 40 MHz bandwidth channel. By analogy, for example, Figure 3 is a diagram of the structure of the maximum transmit power field corresponding to the case where the value of the maximum transmit power count subfield is 4.

[0220] It can be understood that a receiving end device may know its intrinsic BSS operating channel bandwidth. For example, the first frame #1 may further include elements indicating the EHT BSS operating channel bandwidth and the non-EHT BSS operating channel bandwidth, respectively. For example, a non-EHT station may know the bandwidth size of the non-EHT BSS operating channel bandwidth based on elements indicating the non-EHT BSS operating channel bandwidth, such as a high efficiency (HE) operating element, a very high throughput (VHT) operating element, or a high throughput (HT) operating element, and based on the bandwidth size, know the number of basic channels X, and know that the first X of the N first pieces of information #1 indicate the maximum transmit PSD corresponding to the basic channels in the non-EHT BSS operating channel bandwidth. In another example, the EHT station knows the bandwidth size of the EHT BSS operating channel bandwidth based on an element indicating the EHT BSS operating channel bandwidth, knows the number of basic channels Y based on the bandwidth size, determines the meaning of the bandwidth indicated based on the number of first information #1 and the EHT BSS operating channel bandwidth, and interprets the N first information #1 to obtain the maximum transmit PSD corresponding to the basic channels in the EHT BSS operating channel bandwidth.

[0221] The fundamental channels in a non-EHT BSS operating channel bandwidth are continuous. However, the EHT BSS operating channel bandwidth allows for one or more fundamental channels to be punctured, i.e., allows for the fundamental channels to be discontinuous. When the EHT BSS operating channel bandwidth differs from the non-EHT BSS operating channel bandwidth, the EHT BSS operating channel bandwidth and the non-EHT BSS operating channel bandwidth are indicated by different elements. For example, as mentioned above, the EHT BSS operating channel bandwidth is indicated by an EHT operating element, and the non-EHT BSS operating channel bandwidth is indicated by an HE operating element, a VHT operating element, or an HT operating element. When the EHT BSS operating channel bandwidth is the same as the non-EHT BSS operating channel bandwidth, the EHT BSS operating channel bandwidth and the non-EHT BSS operating channel bandwidth are indicated by the same element, e.g., an HE operating element, a VHT operating element, or an HT operating element. To simplify understanding of this embodiment of the present application, the following uses a second element indicating the EHT BSS operating channel bandwidth as an example for illustrative purposes. Optionally, the first frame #1 may further include a second element, which may represent the fundamental channel in the EHT BSS operating channel bandwidth. The second element may be the EHT operation element. The following explanation will be provided using an example where the second element is the EHT operation element related to Figure 5.

[0222] Refer to Figure 5. An EHT operating element may include an element identifier field, a length field, an extension element identifier field, an EHT operation parameter field, a basic EHT modulation and coding scheme (MCS) and number of spatial stream (NSS) set field, and an EHT operation information field. The element identifier field and the extension element identifier field identify the element. The length field indicates the total length of the other fields following the length field in the EHT operating element. The EHT operation parameter field indicates control information, for example, whether an EHT operation information field exists. The basic EHT MCS and NSS set fields indicate the MCS supported by the EHT station in the BSS when the EHT station transmits data units of each number of streams. The EHT operation information field indicates the BSS operating channel bandwidth for the EHT station and includes a channel bandwidth subfield and an invalid subchannel bitmap field. The channel bandwidth subfield may indicate the size of the EHT BSS operating channel bandwidth, and the invalid subchannel bitmap subfield indicates the fundamental channel that is punctured in the EHT BSS operating channel bandwidth.

[0223] It should be understood that the size of an element, as well as the size of fields and subfields within an element, is not limited in this application. For example, an element identifier field may occupy 1 octet, a length field may occupy 1 octet, an element identifier extension field may occupy 1 octet, an EHT operation parameter field may occupy 1 octet, the basic EHT MCS and NSS set fields may occupy 4 octets, and the EHT operation information field may occupy 0, 3, or 5 octets.

[0224] S220: The transmitting device transmits the first frame #1 to the first receiving device and the second receiving device. Correspondingly, the first receiving device receives the first frame #1 from the transmitting device, and the second receiving device receives the first frame #1 from the transmitting device.

[0225] The transmitting end device may transmit the first frame #1 in a broadcast manner. Therefore, multiple receiving end devices may all receive the first frame #1, and the multiple receiving end devices may include at least one EHT station and / or at least one non-EHT station. In this embodiment of the application, the first receiving end device may be a non-EHT station, and the second receiving end device may be an EHT station. Note that the first and second receiving end devices may be alternative receiving end devices having corresponding characteristics, as defined below. This is not particularly limited in this application. For ease of understanding of this embodiment of the application, the following explanation will be provided by using an example in which the first receiving end device is a non-EHT station and the second receiving end device is an EHT station. The following description of a non-EHT station may apply to the first receiving end device, and the following description of an EHT station may apply to the second receiving end device.

[0226] S230: The first receiving end device determines the maximum transmit PSD corresponding to the basic channel in the first basic service set operating channel bandwidth based on the first X pieces of first information #1 out of N pieces of first information #1.

[0227] For example, a first receiving end device receives a first frame #1. If the maximum transmit power interpretation subfield in the transmit power information field within the transmit power envelope element (i.e., first element #1) of the first frame #1 determines that the maximum transmit power field indicates a PSD, i.e., when the value of the maximum transmit power interpretation subfield in the transmit power information field is 1 or 3, the first receiving end device determines N first information #1 based on the maximum transmit power number subfield in the transmit power information field, where N is greater than the number of basic channels X in the first BSS operating channel bandwidth. In this case, the first receiving end device intercepts the first X first information #1 of the N first information #1, and for example reads only the first X subfields of the N subfields in the maximum transmit power field to know the maximum transmit PSD corresponding to the basic channels included in the first operating channel bandwidth, and ignores the subsequent first information #1.

[0228] Optionally, when the Maximum Transmit Power Interpretation subfield indicates that the Maximum Transmit Power field represents an EIRP, i.e., when the value of the Maximum Transmit Power Interpretation subfield is 0 or 2, if the received N is greater than 3, the first receiving end device only needs to receive the 20 MHz Maximum Transmit Power subfield, the 40 MHz Maximum Transmit Power subfield, the 80 MHz Maximum Transmit Power subfield, and the 160 MHz Maximum Transmit Power subfield, ignoring the other remaining Maximum Transmit Power subfields, and determining the EIRP corresponding to each bandwidth based on the Maximum Transmit Power field.

[0229] S240: The second receiving end device determines the maximum transmit PSD corresponding to the basic channel in the second basic service set operating channel bandwidth based on N pieces of first information #1.

[0230] For example, a second receiving end device receives a first frame #1. If the maximum transmit power interpretation subfield in the transmit power information field within the transmit power envelope element (i.e., first element #1) of the first frame #1 determines that the maximum transmit power field indicates a PSD, i.e., when the value of the maximum transmit power interpretation subfield in the transmit power information field is 1 or 3, the first receiving end device determines N first information #1 based on the maximum transmit power number subfield in the transmit power information field, where N is greater than the number of basic channels X in the first BSS operating channel bandwidth. The first BSS operating channel bandwidth is different from the second BSS operating channel bandwidth. In this case, the second receiving end device may compare the values ​​of the N first information #1 with the number of basic channels in the second BSS operating channel bandwidth (i.e., the first value) to determine the indicated bandwidth, and based on the indicated bandwidth and the meaning of the N first information #1, it may determine the maximum transmit PSD corresponding to the basic channels in the second BSS operating channel bandwidth. For a more specific explanation of the bandwidth shown, please refer to the explanations in Examples 1, 2, and 3 of Step 210. Further details will not be provided here.

[0231] If N is less than or equal to the number of fundamental channels X in the first BSS operating channel bandwidth, the first and second receiving devices receive or interpret N first pieces of information #1 in the same manner, that is, they determine that the N pieces of first information #1 are the maximum transmitted PSD corresponding to the fundamental channels from low to high frequencies in the corresponding indicated bandwidth. For a more detailed explanation of the indicated bandwidth, see the explanations of cases a and b in step 210. Further details are not provided here.

[0232] Optionally, when the Maximum Transmit Power Interpretation subfield indicates that the Maximum Transmit Power field represents an EIRP, i.e., when the value of the Maximum Transmit Power Interpretation subfield is 0 or 2, if the received N is greater than 4, the second receiving end device only needs to receive the 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 320 MHz Maximum Transmit Power subfields, and determines the EIRP corresponding to each bandwidth based on the Maximum Transmit Power field, ignoring the other remaining Maximum Transmit Power subfields.

[0233] Under this technical policy, N first information #1 are designed by defining the bandwidths to be shown so that the N first information #1 can simultaneously show the maximum transmit PSD corresponding to the fundamental channel in two types of BSS operating channel bandwidths. Different types of receiving end devices, such as EHT stations and non-EHT stations, can obtain the maximum transmit PSD corresponding to the fundamental channel in their own BSS operating channel bandwidths based on the N first information #1. In this policy, multiple types of frames or elements do not need to be additionally defined to show the maximum transmit PSD corresponding to the fundamental channel in different BSS operating channel bandwidths, so that the transmit overhead is reduced when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably shown.

[0234] The above describes a power indication method with reference to Figures 2 and 5. One embodiment of the present application provides yet another power indication method, which differs from the methods in Figures 2 to 5 in which X fixed first information #1 (the number of fundamental channels in the first BSS operating channel bandwidth) indicate the maximum transmit PSD corresponding to the fundamental channels in the first BSS operating channel bandwidth. In the following method, P flexibly defined first information #1 may indicate the maximum transmit PSD corresponding to the fundamental channels in the first BSS operating channel bandwidth, and the method is described below with reference to Figure 6.

[0235] Figure 6 is a schematic flowchart of another power instruction method according to an embodiment of this application.

[0236] S610: The transmitting device generates the first frame #2.

[0237] The first frame #2 contains the first element #2, which contains P pieces of first information #2 and Q pieces of second information, where each of the P pieces of first information #2 represents the maximum transmit power spectral density (PSD) corresponding to P basic channels, where P basic channels are some or all of the basic channels in the first basic service set operating channel bandwidth, and each of the Q pieces of second information represents the maximum transmit PSD corresponding to the basic channels in the indicated bandwidth excluding the P basic channels, where P and Q are positive integers. The indicated bandwidth relates to the value of M and the second basic service set operating channel bandwidth, where the second basic service set operating channel bandwidth is different from the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer.

[0238] The first element #2 further contains a third and a fourth piece of information, the third piece of information indicating the value of P and the fourth piece of information indicating the value of Q.

[0239] For the meaning of the transmitting end device, the first element #2, the first basic service set operating channel bandwidth, the second basic service set operating channel bandwidth, and the indicated bandwidths, please refer to the relevant explanations in Figures 2 to 5. Further details will not be explained here again. The following mainly describes the first information #2, the second information, the third information, and the fourth information.

[0240] The P pieces of first information #2 may each be information carried in P subfields, and the Q pieces of second information may each be information carried in Q subfields. When the first element #2 is a transmit power envelope element, the P subfields carrying the first information #2 may be subfields within the maximum transmit power field, and the Q subfields carrying the second information may be subfields after the P pieces of subfields carrying the first information #2 within the field. For example, Q subfields may be newly added, and each of the Q subfields may be used to carry Q pieces of second information.

[0241] Optionally, P pieces of first information #2 are sequentially sorted in ascending order of the frequencies of the corresponding basic channels. Optionally, Q pieces of second information are sequentially sorted in ascending order of the frequencies of the corresponding basic channels. Thus, the receiving end can determine the maximum transmit PSD corresponding to the basic channel based on the positions of these first pieces of information, and no additional bits are required to indicate a specific correspondence between the basic channels and these first pieces of information, thereby further reducing transmission overhead.

[0242] Since P basic channels are some or all of the basic channels in the first BSS operating channel bandwidth, it should be noted that the value of P can be less than or equal to the total number of basic channels in the first BSS operating channel bandwidth. In other words, in this implementation, first information #2, whose number is less than or equal to the total number of basic channels in the first BSS operating channel bandwidth, may indicate the maximum transmit PSD corresponding to the basic channels in the first BSS operating channel bandwidth.

[0243] For a first receiving device, since some channels within the first BSS operating channel bandwidth may not have a maximum transmit power PSD limit, or because the maximum transmit power limit corresponding to the channel has been previously transmitted (which remains unchanged in this case), the P pieces of information can be designed in this implementation to each indicate the maximum transmit PSD corresponding to the basic channel within the first BSS operating channel bandwidth. Thus, transmission overhead can be reduced by eliminating redundant subfields.

[0244] The maximum transmit PSD for a basic channel that is not within the first BSS operating channel bandwidth but is within the indicated bandwidth can also be determined based on Q pieces of second information. A basic channel that is neither within the first BSS operating channel bandwidth nor within the indicated bandwidth does not have a corresponding maximum transmit PSD.

[0245] The third piece of information indicates the value of P, and the fourth piece of information indicates the value of Q. Note that when the first element #2 is the transmit power envelope element, and P pieces of the third piece of information are carried in P subfields within the maximum transmit power field, the third piece of information may also be carried in the maximum transmit power count subfield within the transmit power envelope element. In other words, different values ​​of the maximum transmit power count subfield correspond to different values ​​of P. In addition, the EHT maximum transmit power count subfield may be defined in the first element #2 to carry the fourth piece of information. Different values ​​of different EHT maximum transmit power count subfields may correspond to different values ​​of Q.

[0246] Optionally, the first element #2 may further include indicator information, which indicates whether the number of first information #2s is equal to the total number of basic channels in the first basic service set operating channel bandwidth. When the indicator information indicates that the number of first information #2s is equal to the total number of basic channels in the first basic service set operating channel bandwidth, the transmitting end device may not need to transmit the third information, or the receiving end device may not need to interpret the third information. A non-EHT station may obtain P first information #2s based on the total number of basic channels in the first basic service set operating channel bandwidth. In this case, the fourth information may be carried in the maximum transmit power count subfield of the transmit power envelope element.

[0247] The meaning of the indicator fields is the same as that defined in Figures 2 to 5, and it can be understood that they all relate to the number of pieces of information indicating the maximum transmit PSD. In the implementations of Figures 2 to 5, the number of pieces of information indicating the maximum transmit PSD is represented by the number N of the first piece of information #1. In this implementation, the number of subfields indicating the maximum transmit PSD is represented by the sum M of the number P of the first piece of information #2 and the number Q of the second piece of information. In another implementation, the fourth piece of information indicates that the value of Q is the aforementioned M. In this case, the Q pieces of second piece of information each indicate the maximum transmit PSD corresponding to the basic channel within the indicated bandwidth.

[0248] To facilitate understanding of this embodiment of the present application, three examples of the shown bandwidth in this implementation are described below in relation to Figure 7. Please refer to Figure 7. For the meaning of the base channel, channel, non-EHT BBS operating channel bandwidth, and EHT BSS operating channel bandwidth in Figure 7, please refer to the explanation in Figure 4. In this implementation, in Example 1, M is equal to a first value of 16, P may be 1, and Q may be 15, i.e., one subfield represents the maximum transmit PSD corresponding to base channel 7 in the non-EHT BBS operating channel bandwidth, and the other subfield represents the maximum transmit PSD corresponding to the base channel in the shown bandwidth excluding base channel 5. In Example 2, M is less than the first value, M=8, P may be 1, and Q may be 7, i.e., one subfield represents the maximum transmit PSD corresponding to base channel 5 in the non-EHT BBS operating channel bandwidth, and the other subfield represents the maximum transmit PSD corresponding to the base channel in the shown bandwidth excluding base channel 7. In Example 3, M is greater than the first value, so M = 32, P may be 1, and Q may be 31. For the meaning of the bandwidth shown, please refer to the explanations of Examples 1 to 5 above. Further details will not be explained here.

[0249] S620: The transmitting device transmits the first frame #2 to the first receiving device and the second receiving device. Correspondingly, the first receiving device receives the first frame #2 from the transmitting device, and the second receiving device receives the first frame #2 from the transmitting device.

[0250] For an explanation of this step, please refer to the explanation of step S220 in Figure 2. Further details will not be explained here.

[0251] S630: The first receiving end device determines the maximum transmit PSD corresponding to the basic channel in the first basic service set operating channel bandwidth based on P pieces of first information #2.

[0252] For example, a second receiving end device receives a first frame #2. If the maximum transmit power interpretation subfield in the transmit power information field within the transmit power envelope element (i.e., first element #2) of the first frame #2 determines that the maximum transmit power field indicates a PSD, i.e., when the value of the maximum transmit power interpretation subfield in the transmit power information field is 1 or 3, the first receiving end device determines P first information #2 based on the maximum transmit power number subfield in the transmit power information field, where P is greater than 0. In this case, the first receiving end device intercepts the P first information #2 and, for example, reads only the first P subfields out of M subfields in the maximum transmit power field to know the maximum transmit PSD corresponding to the basic channel included in the first operating channel bandwidth, and ignores the subsequent MP subfields.

[0253] Optionally, when the Maximum Transmit Power Interpretation subfield indicates that the Maximum Transmit Power field represents an EIRP, that is, when the value of the Maximum Transmit Power Interpretation subfield is 0 or 2, the first receiving end device determines the subfields included in the Maximum Transmit Power field based on the Maximum Transmit Power Count subfield in the Transmit Power Information field, and determines the EIRP corresponding to the channel based on the Maximum Transmit Power field.

[0254] S640: The second receiving end device determines the maximum transmit PSD corresponding to the basic channel in the second basic service set operating channel bandwidth, based on P pieces of first information #2 and Q pieces of second information.

[0255] For example, a second receiving end device receives a second frame #2. If the maximum transmit power interpretation subfield in the transmit power information field within the transmit power envelope element of the first frame #2 (i.e., first element #2) determines that the maximum transmit power field indicates a PSD, i.e., when the value of the maximum transmit power interpretation subfield in the transmit power information field is 1 or 3, the first receiving end device determines P first information #2 based on the maximum transmit power count subfield in the transmit power information field and Q second information based on the extended transmit power count field, where P is greater than 0. The first BSS operating channel bandwidth is different from the second BSS operating channel bandwidth. In this case, the second receiving end device may compare the sum of P and Q with the number of fundamental channels in the second BSS operating channel bandwidth (i.e., the first value) to determine the indicated bandwidth, and based on the indicated bandwidth and the meaning of the P first pieces of information #2 and the Q second pieces of information, it may determine the maximum transmit PSD corresponding to some or all of the fundamental channels in the second BSS operating channel bandwidth.

[0256] Optionally, when the Maximum Transmit Power Interpretation subfield indicates that the Maximum Transmit Power field represents an EIRP, i.e., when the value of the Maximum Transmit Power Interpretation subfield is 0 or 2, the second receiving end device determines the subfields included in the Maximum Transmit Power field based on the Maximum Transmit Power Count subfield in the Transmit Power Information field, and determines the EIRP corresponding to the channel based on the Maximum Transmit Power field.

[0257] Based on this technical approach, the P first pieces of information #2 and Q second pieces of information are defined such that they indicate the maximum transmit PSD corresponding to some or all of the fundamental channels in the second BSS operating channel bandwidth, and the Q second pieces of information are defined by designing the bandwidth to be indicated, so that different types of receiving end devices, e.g., both EHT and non-EHT stations, can obtain the maximum transmit PSD corresponding to the fundamental channels in their own BSS operating channel bandwidth based on the first element #2. In this approach, multiple types of frames or elements do not need to be additionally defined to indicate the maximum transmit PSD corresponding to the fundamental channels in different BSS operating channel bandwidths, so that the transmit overhead is reduced when the maximum transmit PSD corresponding to two types of BSS operating channel bandwidths is reliably indicated. In addition, the value of P is indicated based on a third piece of information, and the design of the first piece of information #2 is more flexible, i.e., the way in which the first BSS operating channel bandwidth is indicated is more flexible.

[0258] In the power indication methods described in Figures 2 to 5, N pieces of first information #1 may be used to simultaneously indicate the maximum transmit PSD corresponding to some or all of the basic channels in the first BSS operating channel bandwidth and the second BSS operating channel bandwidth. In the power indication methods described in Figures 6 and 7, P pieces of first information #2 and Q pieces of second information may be used to simultaneously indicate the maximum transmit PSD corresponding to some or all of the basic channels in the first BSS operating channel bandwidth and the second BSS operating channel bandwidth. In a possible implementation, the two power indication methods described above may be used in combination. For example, a transmitting end device may transmit information to a receiving end device indicating whether the number of pieces of information corresponding to the basic channels in the first BSS operating channel bandwidth is equal to the number of basic channels in the first BSS operating channel bandwidth. If the information indicates that these two numbers are equal, it may indicate that the first frame transmitted by the transmitting end device is designed in the first indication method. If the information indicates that these two numbers are not equal, it may indicate that the first frame transmitted by the transmitting end device is designed in the second indication method. This is not particularly limited in this application.

[0259] The above describes an information instruction method provided in embodiments of the present application, relating to Figures 2 to 7. The following describes a communication device provided in embodiments of the present application, relating to Figures 8 to 10. In one possible implementation, the device is configured to perform steps or procedures corresponding to the receiving end device in the embodiments of the method described above. In another possible implementation, the device is configured to perform steps or procedures corresponding to the transmitting end device in the embodiments of the method described above.

[0260] Figure 8 is a schematic block diagram of a communication device 800 according to an embodiment of the present application. As shown in Figure 8, the device 800 may include a communication unit 810 and a processing unit 820. The communication unit 810 may communicate with an external device, and the processing unit 820 is configured to process data. The communication unit 810 may further be called a communication interface or transceiver unit.

[0261] In one possible design, the device 800 may perform steps or procedures performed by the transmitting end device in the embodiments of the method described above. The processing unit 820 is configured to perform processing-related operations of the transmitting end device in the embodiments of the method described above, and the communication unit 810 is configured to perform transmission-related operations of the transmitting end device in the embodiments of the method described above.

[0262] In another possible design, the device 800 may perform steps or procedures performed by the first receiving end device in the embodiments of the method described above. The communication unit 810 is configured to perform the receiving-related operations of the first receiving end device in the embodiments of the method described above, and the processing unit 820 is configured to perform the processing-related operations of the first receiving end device in the embodiments of the method described above.

[0263] In yet another possible design, the device 800 may perform steps or procedures performed by the second receiving end device in the embodiments of the method described above. The communication unit 810 is configured to perform the reception-related operations of the second receiving end device in the embodiments of the method described above, and the processing unit 820 is configured to perform the processing-related operations of the second receiving end device in the embodiments of the method described above.

[0264] It should be understood that the apparatus 800 described herein is presented in the form of a functional unit. The term “unit” as used herein may mean an application-specific integrated circuit (ASIC), electronic circuitry, a processor configured to run one or more software or firmware programs (e.g., a shared processor, a dedicated processor, or a group processor), memory, integrated logic circuits, and / or other suitable components supporting the function described. In an optional example, those skilled in the art will understand that the apparatus 800 may specifically be a transmitting end device in the embodiments described above, and may be configured to perform procedures and / or steps corresponding to a transmitting end device in the embodiments of the method described above. Alternatively, the apparatus 800 may specifically be a receiving end device in the embodiments described above, and may be configured to perform procedures and / or steps corresponding to a receiving end device in the embodiments of the method described above. For the sake of avoiding repetition, further details are not described here.

[0265] Each of the above-described measures has a function to perform the corresponding step performed by the transmitting end device in the above-described method, or each of the above-described measures has a function to perform the corresponding step performed by the receiving end device in the above-described method. The function may be implemented by hardware, or by hardware running the corresponding software. The hardware or software includes one or more modules corresponding to the above-described function. For example, in order to separately perform the transmit and receive operations and associated processing operations in each embodiment of the method, the communication unit may be replaced by a transceiver (for example, the transmitting unit in the communication unit may be replaced by a transmitter, and the receiving unit in the communication unit may be replaced by a receiver), and another unit such as a processing unit may be replaced by a processor.

[0266] In addition, the communication unit may be a transceiver circuit (for example, including a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit. In this embodiment of the present application, the device of Figure 8 may be an AP or STA in the embodiments described above, or it may be a chip or a chip system, such as a system on a chip (SoC). The communication unit may be an input / output circuit or a communication interface. The processing unit is a processor, a microprocessor, or an integrated circuit integrated on a chip. This is not limited herein.

[0267] Figure 9 is a schematic block diagram of a communication device 900 according to an embodiment of the present application. The device 900 includes a processor 910 and a transceiver 920. The processor 910 and the transceiver 920 communicate with each other through an internal connection path. The processor 910 is configured to execute instructions and control the transceiver 920 to transmit and / or receive signals.

[0268] Optionally, the device 900 may further include a memory 930. The memory 930 communicates with the processor 910 and the transceiver 920 through an internal connection path. The memory 930 is configured to store instructions, and the processor 910 can execute instructions stored in the memory 930. In one possible implementation, the device 900 is configured to perform the procedures and steps corresponding to the transmitting end device in the embodiments of the method described above. In another possible implementation, the device 900 is configured to perform the procedures and steps corresponding to the receiving end device in the embodiments of the method described above.

[0269] It should be understood that the device 900 may specifically be a transmitting end device or a receiving end device in the embodiments described above, or it may be a chip or a chip system. Correspondingly, the transceiver 920 may be a chip transceiver circuit. This is not limited herein. Specifically, the device 900 may be configured to perform the steps and / or procedures corresponding to the transmitting end device or receiving end device in the embodiments of the method described above. Optionally, the memory 930 may include read-only memory and random access memory and provide instructions and data for the processor. Part of the memory may further include non-volatile random access memory. For example, the memory may further store device type information. The processor 910 may be configured to execute instructions stored in memory. When the processor 910 executes instructions stored in memory, the processor 910 is configured to perform the steps and / or procedures of the embodiments of the method corresponding to the transmitting end device or receiving end device.

[0270] In a particular implementation process, the steps of the method described above may be carried out by using hardware integrated logic circuits within a processor or by using instructions in the form of software. The steps of the method disclosed in relation to embodiments of this application may be carried out directly by a hardware processor or by using a combination of hardware and software modules within the processor. The software modules may reside in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage medium resides in memory, and the processor reads information from memory and, in combination with the processor's hardware, completes the steps of the method described above. To avoid repetition, further details are not described here.

[0271] Note that the processor in the embodiments of this application may be an integrated circuit chip and has signal processing capabilities. In a given implementation process, the steps in the embodiments of the method described above may be carried out by using hardware integrated logic circuits in the processor or by using instructions in the form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The processor in the embodiments of this application may implement or carry out the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps of the methods disclosed in relation to embodiments of this application may be carried out directly by a hardware decoding processor, or by using a combination of hardware and software modules in the decoding processor. The software modules may reside in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage medium resides in memory, and the processor reads the information from memory and combines it with the processor's hardware to complete the steps of the method described above.

[0272] It can be understood that the memory in the embodiments of this application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. Rather than providing a restrictive description, this document will use examples to illustrate the use of many forms of RAM, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus dynamic random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein includes, but is not limited to, these memories and any other appropriate type of memory.

[0273] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, memory (storage modules) may be integrated into the processor. It should be further noted that the memories described herein are intended to include, but are not limited to, these memories and any other appropriate types of memory.

[0274] Figure 10 is a diagram of the chip system 1000 shown according to an embodiment of the present application. The chip system 1000 (which may also be called a processing system) includes a logic circuit 1010 and an input / output interface 1020.

[0275] The logic circuit 1010 may be a processing circuit within the chip system 1000. The logic circuit 1010 may be coupled to and connected to a memory unit to call instructions within the memory unit, so that the chip system 1000 can implement the methods and functions of the embodiments of this application. The input / output interface 1020 may also be an input / output circuit within the chip system 1000, which outputs information to be processed by the chip system 1000 or inputs data or signaling to be processed into the chip system 1000 for processing.

[0276] Specifically, for example, if the chip system 1000 is installed in a transmitting end device, the logic circuit 1010 may be coupled to an input / output interface 1020, and the logic circuit 1010 may transmit a first frame through the input / output interface 1020, and the first frame may be generated by the logic circuit 1010. In another example, if the chip system 1000 is installed in a receiving end device, the logic circuit 1010 may be coupled to an input / output interface 1020, and the logic circuit 1010 may receive a first frame through the input / output interface 1020, and the logic circuit 1010 may determine the maximum transmit power (PSD) based on the first frame.

[0277] In one approach, the chip system 1000 is configured to perform the operations performed by the transmitting end device in the embodiment of the method described above.

[0278] For example, the logic circuit 1010 is configured to perform processing-related operations performed by the transmitting end device in the embodiments of the above-described method, such as the processing-related operations performed by the transmitting end device in the embodiments shown in Figures 2 to 7, and the input / output interface 1020 is configured to perform transmission and / or reception-related operations performed by the transmitting end device in the embodiments of the above-described method, such as the processing-related operations performed by the transmitting end device in the embodiments shown in Figures 2 to 7.

[0279] Alternatively, the chip system 1000 is configured to perform the operations performed by the first receiving end device in the embodiment of the method described above.

[0280] For example, the logic circuit 1010 is configured to perform processing-related operations performed by the first receiving end device in the embodiments of the above-described method, such as the processing-related operations performed by the first receiving end device in the embodiments shown in Figures 2 to 7, and the input / output interface 1020 is configured to perform transmission and / or reception-related operations performed by the first receiving end device in the embodiments of the above-described method, such as the processing-related operations performed by the first receiving end device in the embodiments shown in Figures 2 to 7.

[0281] In yet another approach, the chip system 1000 is configured to perform the operation performed by the second receiving end device in the embodiment of the method described above.

[0282] For example, the logic circuit 1010 is configured to perform processing-related operations implemented by the second receiving-end device in the embodiments of the above method, for example, the processing-related operations implemented by the second receiving-end device in the embodiments shown in FIGS. 2 to 7. The input / output interface 1020 is configured to perform transmission and / or reception-related operations implemented by the second receiving-end device in the embodiments of the above method, for example, the processing-related operations implemented by the second receiving-end device in the embodiments shown in FIGS. 2 to 7.

[0283] In addition, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores computer instructions. When the computer instructions are executed on a computer, the operations and / or procedures implemented by the transmitting-end device or the receiving-end device in the embodiments of the method of the present application are implemented.

[0284] The present application further provides a computer program product. The computer program product includes computer program code or instructions. When the computer program code or instructions are executed on a computer, the operations and / or procedures implemented by the transmitting-end device or the receiving-end device in the embodiments of the method of the present application are implemented.

[0285] In addition, the present application further provides a communication system including the transmitting-end device and the receiving-end device in the embodiments of the present application.

[0286] It should be further noted that the memories described herein are intended to include, but are not limited to, these memories and any other suitable types of memories.

[0287] In combination with the examples described in the embodiments disclosed herein, those skilled in the art will recognize that the units and algorithmic steps may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented by hardware or software depends on the specific application and design constraints of the technical measures. Those skilled in the art may implement the functions described for their respective specific applications using different methods, but such implementations should not be considered beyond the scope of this application. For the purpose of convenience and brevity of the description, it will be readily apparent to those skilled in the art that for detailed operating processes of the systems, devices, and units described above, one should refer to the corresponding processes in the embodiments of the methods described above. Details are again not described here. In some embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the embodiments of the devices described are merely examples. For example, the division into units is merely a logical division of functions, and other divisions may exist in actual implementations. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not implemented. In addition, the mutual or direct coupling or communication connections shown or discussed may be implemented by using several interfaces. Indirect coupling or communication connections between devices or units may be implemented electronically, mechanically, or in other forms. Units described as separate parts may or may not be physically separate, and parts shown as units may or may not be physical units, may be located in one location, or may be distributed across multiple network units. Some or all of the units may be selected based on the actual requirements for achieving the objectives of the embodiment's strategy. In addition, the functional units in the embodiments of this application may be integrated into a single processing unit, each unit may exist physically independently, or two or more units may be integrated into a single unit.

[0288] When a function is implemented in the form of a software functional unit and sold or used as an independent product, the function can be stored in a computer-readable storage medium. Based on such an understanding, basically, some of the technical solutions of the present application, or the parts that contribute to the prior art, or the technical solutions can be implemented in the form of a software product. A computer software product includes several instructions stored in a storage medium for instructing a computer device (which can be a personal computer, a server, or a network device) to perform all or part of the steps of the method described in the embodiments of the present application. The above-mentioned storage medium includes any medium that can store program codes, such as a USB flash drive, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0289] As used throughout this specification, "embodiments" should be understood to mean that the specific features, structures, or characteristics related to this embodiment are included in at least one embodiment of the present application. Therefore, embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0290] It should be further understood that the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not intended to limit the size, content, permutation, time series, priority, importance, etc. of the multiple objects. For example, the first information and the second information do not indicate differences in the amount of information, content, priority, importance, etc.

[0291] In the present application, both "when" and "if" mean that the network element performs the corresponding processing in the target situation, but there is no time constraint, and it is not required that the network element has a decision-making operation in the implementation form, nor does it mean other restrictions.

[0292] In this application, it should be further understood that "at least one" means one or more, and "multiple" means two or more. "At least one of the following items" or similar expressions means any combination of these items, including any combination of singular items or multiple items. For example, at least one of a, b, or c could represent a, b, c, a and b, a and c, b and c, or a, b, and c.

[0293] Unless otherwise specified, expressions used in this application similar to the expression "the item includes one or more of A, B, and C" usually mean that the item may be any one of the following: A;B;C;A and B;A and C;B and C;A,B, and C;A and A;A,A, and A;A,A, and B;A,A, and C;A,B, and B;A,C, and C;B and B;B,B, and B;B,B, and C;C and C;C,C, and C; and any other combination of A,B, and C. In the above description, the three items A, B, and C are used as examples to illustrate cases of arbitrary selection of items. When the expression is "the item includes at least one of A, B, ..., and X," in other words, when more elements are included in the expression, cases to which the item is applicable can also be obtained according to the rules above.

[0294] In this specification, the term "and / or" should be understood to describe only the correlation between correlated objects and to indicate that three relationships may exist. For example, A and / or B can represent three cases: A exists only, both A and B exist, and B exists only. A and B can be singular or plural. The letter " / " generally indicates an "or" relationship between correlated objects. For example, A / B indicates A or B.

[0295] In the embodiments of this application, it should be further understood that “B corresponding to A” indicates that B is associated with A and that B can be determined based on A. However, it should be further understood that determining B based on A does not mean that B is determined solely based on A. B can, alternatively, be determined based on A and / or other information.

[0296] The above description merely outlines specific implementations of the present application and is not intended to limit the scope of protection. Any modifications or substitutions readily understood by those skilled in the art within the scope of the art disclosed herein shall fall within the scope of protection. Accordingly, the scope of protection of this application shall depend on the scope of protection of the claims. [Explanation of Symbols]

[0297] 800 Communication equipment 810 Communication Unit 820 processing units 900 Communication equipment 910 Processor 920 Transceiver 930 memory 1000 Chip System 1010 Logic Circuits 1020 Input / Output Interface

Claims

1. A communication method, wherein the communication method is A step of generating a first frame, wherein the first frame comprises a first element, the first element comprising P pieces of first information and Q pieces of second information, each of the P pieces of first information representing the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, each of the Q pieces of second information representing the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, P and Q being positive integers, the indicated bandwidth being a value of M and the second basic service set operating channel bandwidth, the size of the second basic service set operating channel bandwidth being different from the size of the first basic service set operating channel bandwidth, or the number of basic channels in the second basic service set operating channel bandwidth being different from the number of basic channels in the first basic service set operating channel bandwidth, M being equal to the sum of P and Q, M being a positive integer, and the first element further comprising a third piece of information and a fourth piece of information, the third piece of information representing the value of P, and the fourth piece of information representing the value of Q. A communication method comprising the step of transmitting the first frame.

2. The communication method according to claim 1, wherein the basic channel in the second basic service set operation channel bandwidth comprises the basic channel in the first basic service set operation channel bandwidth.

3. The communication method according to claim 1 or 2, wherein the P pieces of first information are sequentially sorted in ascending order of the frequencies of the corresponding basic channels.

4. The communication method according to claim 1 or 2, wherein the Q pieces of second information are sequentially sorted in ascending order of the frequencies of the corresponding basic channels.

5. The communication method according to claim 1 or 2, wherein M is equal to a first value, the indicated bandwidth is the second basic service set operation channel bandwidth, and the first value is the number of basic channels included in the second basic service set operation channel bandwidth.

6. The communication method according to claim 1 or 2, wherein M is less than a first value, the indicated bandwidth is primary Z megahertz in the second basic service set operating channel bandwidth, Z is equal to M multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

7. The communication method according to claim 1 or 2, wherein M is greater than a first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, the first S pieces of information among the M pieces of information which are the sum of the P pieces of first information and the Q pieces of second information each indicate the maximum transmit PSD corresponding to the S basic channels included in the second basic service set operating channel bandwidth, S is a positive integer, the first value is the number of basic channels included in the second basic service set operating channel bandwidth, and S is greater than P.

8. The communication method according to claim 7, wherein the P first pieces of information and the Q second pieces of information, among the M pieces of information, the (S+1)th to (P+Q)th pieces of information are spares.

9. The communication method according to claim 1 or 2, wherein the bandwidth size of the basic channel is 20 megahertz (MHz).

10. The communication method according to claim 1 or 2, wherein the first element further comprises a maximum transmit power interpretation field, the maximum transmit power interpretation field indicating maximum transmit power information corresponding to at least one basic channel of the first element, and the value of the maximum transmit power interpretation field is 1 or 3.

11. The communication method according to claim 1 or 2, wherein the first element is a transmitting power envelope element.

12. The communication method according to claim 1 or 2, wherein the first basic service set operating channel bandwidth is a non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is an EHT basic service set operating channel bandwidth.

13. The communication method according to claim 1 or 2, wherein the value of M is 2 to the power of m, and m is an integer greater than or equal to 0.

14. A communication method, wherein the communication method is A step of receiving a first frame, wherein the first frame comprises a first element comprising P first information and Q second information, each of the P first information representing the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, each of the Q second information representing the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers, the first element further comprises a third information and a fourth information, the third information representing the value of P, the fourth information representing the value of Q, and the indicated bandwidth being a value of M and the second basic service set operating channel bandwidth, wherein the size of the second basic service set operating channel bandwidth is different from the size of the first basic service set operating channel bandwidth, or the number of basic channels in the second basic service set operating channel bandwidth is different from the number of basic channels in the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer, A communication method comprising the step of determining the maximum transmit PSD corresponding to the basic channel in the second basic service set operating channel bandwidth based on the first frame.

15. A communication method, wherein the communication method is A step of receiving a first frame, wherein the first frame comprises a first element comprising P first information and Q second information, each of the P first information representing the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, each of the Q second information representing the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers, the first element further comprises a third information and a fourth information, the third information representing the value of P, the fourth information representing the value of Q, and the indicated bandwidth being a value of M and the second basic service set operating channel bandwidth, wherein the size of the second basic service set operating channel bandwidth is different from the size of the first basic service set operating channel bandwidth, or the number of basic channels in the second basic service set operating channel bandwidth is different from the number of basic channels in the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer, A communication method comprising the steps of determining the maximum transmit PSD corresponding to the basic channel in the first basic service set operating channel bandwidth based on the first frame.

16. The communication method according to claim 14 or 15, wherein the basic channel in the second basic service set operation channel bandwidth comprises the basic channel in the first basic service set operation channel bandwidth.

17. The communication method according to claim 14 or 15, wherein the P pieces of first information are sequentially sorted in ascending order of the frequencies of the corresponding basic channels.

18. The communication method according to claim 14 or 15, wherein the Q pieces of second information are sequentially sorted in ascending order of the frequencies of the corresponding basic channels.

19. The communication method according to claim 14 or 15, wherein M is equal to a first value, the indicated bandwidth is the second basic service set operation channel bandwidth, and the first value is the number of basic channels included in the second basic service set operation channel bandwidth.

20. The communication method according to claim 14 or 15, wherein M is less than a first value, the indicated bandwidth is primary Z megahertz in the second basic service set operating channel bandwidth, Z is equal to M multiplied by the basic channel bandwidth, and the first value is the number of basic channels included in the second basic service set operating channel bandwidth.

21. The communication method according to claim 14 or 15, wherein M is greater than a first value, the indicated bandwidth is greater than the second basic service set operating channel bandwidth, the first S pieces of information among the M pieces of information which are the sum of the P pieces of first information and the Q pieces of second information each indicate the maximum transmit PSD corresponding to the S basic channels included in the second basic service set operating channel bandwidth, S is a positive integer, the first value is the number of basic channels included in the second basic service set operating channel bandwidth, and S is greater than P.

22. The communication method according to claim 21, wherein the P first pieces of information and the Q second pieces of information, among the M pieces of information, the (S+1)th to (P+Q)th pieces of information are spares.

23. The communication method according to claim 14 or 15, wherein the bandwidth size of the basic channel is 20 megahertz (MHz).

24. The communication method according to claim 14 or 15, wherein the first element further comprises a maximum transmit power interpretation field, the maximum transmit power interpretation field indicating maximum transmit power information corresponding to at least one basic channel of the first element, and the value of the maximum transmit power interpretation field is 1 or 3.

25. The communication method according to claim 14 or 15, wherein the first element is a transmitting power envelope element.

26. The communication method according to claim 14 or 15, wherein the first basic service set operating channel bandwidth is a non-extremely high throughput (EHT) basic service set operating channel bandwidth, and the second basic service set operating channel bandwidth is an EHT basic service set operating channel bandwidth.

27. The communication method according to claim 14 or 15, wherein the value of M is 2 to the power of m, and m is an integer greater than or equal to 0.

28. A communication device comprising a transceiver unit and a processing unit, The processing unit is configured to generate a first frame, the first frame comprising a first element, the first element comprising P pieces of first information and Q pieces of second information, each of the P pieces of first information representing the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, each of the Q pieces of second information representing the maximum transmit PSD corresponding to a basic channel in a indicated bandwidth excluding the P basic channels, P and Q being positive integers, the indicated bandwidth being a value of M and a second basic service set operating channel bandwidth, the size of the second basic service set operating channel bandwidth being different from the size of the first basic service set operating channel bandwidth, or the number of basic channels in the second basic service set operating channel bandwidth being different from the number of basic channels in the first basic service set operating channel bandwidth, M being equal to the sum of P and Q, M being a positive integer, and the first element further comprising a third piece of information and a fourth piece of information, the third piece of information representing the value of P, and the fourth piece of information representing the value of Q. A communication device in which the transceiver unit is configured to transmit the first frame.

29. A communication device comprising a transceiver unit and a processing unit, The transceiver unit is configured to receive a first frame, the first frame comprising a first element, the first element comprising P first information and Q second information, each of the P first information representing the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, each of the Q second information representing the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers, the first element further comprising a third information and a fourth information, the third information representing the value of P, the fourth information representing the value of Q, and the indicated bandwidth being, with respect to the value of M and the second basic service set operating channel bandwidth, the size of the second basic service set operating channel bandwidth being different from the size of the first basic service set operating channel bandwidth, or the number of basic channels in the second basic service set operating channel bandwidth being different from the number of basic channels in the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer. A communication device in which the processing unit is configured to determine the maximum transmit PSD corresponding to the basic channel in the second basic service set operating channel bandwidth based on the first frame.

30. A communication device comprising a transceiver unit and a processing unit, The transceiver unit is configured to receive a first frame, the first frame comprising a first element, the first element comprising P first information and Q second information, each of the P first information representing the maximum transmit power spectral density (PSD) corresponding to P basic channels, the P basic channels being some or all of the basic channels in a first basic service set operating channel bandwidth, each of the Q second information representing the maximum transmit PSD corresponding to the basic channels in a indicated bandwidth excluding the P basic channels, where P and Q are positive integers, the first element further comprising a third information and a fourth information, the third information representing the value of P, the fourth information representing the value of Q, and the indicated bandwidth being, with respect to the value of M and the second basic service set operating channel bandwidth, the size of the second basic service set operating channel bandwidth being different from the size of the first basic service set operating channel bandwidth, or the number of basic channels in the second basic service set operating channel bandwidth being different from the number of basic channels in the first basic service set operating channel bandwidth, where M is equal to the sum of P and Q, and M is a positive integer. A communication device in which the processing unit is configured to determine, based on the first frame, the maximum transmit PSD corresponding to the basic channel in the first basic service set operating channel bandwidth.

31. A communication device comprising a processor, wherein the processor is configured to execute computer instructions stored in memory such that the communication device implements the communication method described in claim 1, the communication device implements the communication method described in claim 14, or the communication device implements the communication method described in claim 15.

32. A computer-readable storage medium for storing computer instructions, wherein when the computer instructions are executed on a computer, the communication method described in claim 1 is performed, the communication method described in claim 14 is performed, or the communication method described in claim 15 is performed.

33. A chip comprising a processor and a communication interface, wherein the processor reads instructions stored in memory through the communication interface and performs the communication method described in claim 1, the communication method described in claim 14, or the communication method described in claim 15.

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