Puncturing information indication method and communications apparatus

Abstract

A puncturing information indication method and a communications apparatus are provided.SOLUTION: The sending device sends the preamble puncturing information on a first content channel, where a total bandwidth of the first content channel is less than a bandwidth of a physical layer protocol data unit (PHY protocol data unit, PPDU). Therefore, some sub-channels in the PPDU are reused. Compared with a manner in which the preamble puncturing information is sent on all subchannels, this method can reduce signaling overheads. Further, the receiving device may determine a use state of a channel of the PPDU by receiving the preamble puncturing information.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202010028613.1, entitled "Puncturing Information Indication Method and Communication Apparatus," filed with the State Intellectual Property Office of China on January 11, 2020, and is incorporated herein by reference in its entirety.

[0002] Technical Field The present application relates to the field of communication technology, and more particularly to a puncturing information indicating method and a communication device. [Background technology]

[0003] After years of development, there have been many generations of wireless local area networks (WLANs), including 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, and 802.11be.

[0004] Regarding bandwidth configuration, 802.11ax supports bandwidth configurations of 20 MHz, 40 MHz, 80 MHz, 160 MHz, and 80+80 MHz. For example, in 802.11ax, if the bandwidth is configured as 160 MHz, the channel division is as shown in Figure 1. In this case, if the secondary 20 MHz channel is occupied, the transmitting end may send preamble puncturing information to the receiving end to avoid inaccurate reception of the secondary 20 MHz channel by the receiving end.

[0005] Therefore, how the transmitting end transmits the preamble puncturing information so that the receiving end can obtain the preamble puncturing information is still a problem that needs to be solved. Summary of the Invention [Problem to be solved by the invention]

[0006] The present application provides a puncturing information indication method and a communication device, which allows preamble puncturing information to be transmitted on a first content channel, thereby avoiding transmitting preamble puncturing information on all subchannels and reducing signaling overhead. [Means for solving the problem]

[0007] According to a first aspect, the present application provides a puncturing information indication method, including: generating a PHY protocol data unit (PPDU) including a preamble, the preamble including preamble puncturing information; and transmitting the preamble puncturing information on a first content channel, the total bandwidth of the first content channel being less than the bandwidth of the PPDU. A method is provided.

[0008] In this embodiment of the present application, the content carried on the first content channel is the preamble puncturing information, and the first content channel is distributed over several channels of the PPDU, for example, the first content channel may be distributed over several consecutive subchannels of the PPDU, or the first content channel may be distributed over several non-consecutive subchannels of the PPDU.

[0009] According to the technical solution provided in this application, the preamble puncturing information is transmitted on a first content channel, and the total bandwidth of the first content channel is smaller than the bandwidth of the PPDU. In other words, the transmitting device reuses some subchannels of the PPDU to transmit the preamble puncturing information. Compared with an aspect in which the preamble puncturing information is transmitted on all subchannels of the PPDU under the instruction of specifically using one field, this method can reduce signaling overhead.

[0010] According to a second aspect, the present application provides a puncturing information indication method, comprising: receiving preamble puncturing information on a first content channel, the preamble puncturing information being included in a preamble of a PHY protocol data unit (PPDU), and a total bandwidth of the first content channel being smaller than a bandwidth of the PPDU; and determining a channel usage status of the PPDU based on the preamble puncturing information. A method is provided.

[0011] In one possible implementation of the first or second aspect, the preamble further includes location indicating information, the location indicating information indicating a frequency domain location of the first content channel.

[0012] According to the technical solution provided in the present application, a receiving device may obtain a frequency domain location of a first content channel by using the location indication information to receive preamble puncturing information on the first content channel.

[0013] In one possible implementation of the first or second aspect, the position indication information is located in a universal (universal SIG, U-SIG) field, and the preamble puncturing information is located in a field after the U-SIG field.

[0014] In one possible implementation of the first or second aspect, the first content channel includes odd-numbered subchannels, the first content channel includes even-numbered subchannels, or the first content channel includes specified subchannels, and the bandwidth of the subchannels is a fixed value.

[0015] In this embodiment of the present application, the bandwidth of the subchannel may be 10 MHz, 20 MHz, 30 MHz, 40 MHz, etc. The frequency domain location of the first content channel may be preset or may be indicated by location indication information.

[0016] In one possible implementation of the first or second aspect, if the first content channel includes a subchannel corresponding to a secondary 40 MHz bandwidth, the bandwidth of the PPDU is 80 MHz; if the first content channel includes a subchannel corresponding to a second secondary 80 MHz bandwidth, the bandwidth of the PPDU is 160 MHz; if the first content channel includes a subchannel corresponding to a third secondary 80 MHz bandwidth, the bandwidth of the PPDU is 240 MHz; and if the first content channel includes a subchannel corresponding to a secondary 160 MHz bandwidth, the bandwidth of the PPDU is 320 MHz.

[0017] The first secondary 80 MHz bandwidth may be understood as the first 80 MHz bandwidth in which the main 20 MHz bandwidth is located.

[0018] Optionally, the first content channel may further include odd-numbered subchannels, even-numbered subchannels, or designated subchannels corresponding to secondary 40 MHz bandwidths.

[0019] According to a third aspect, the present application provides a communication device configured to perform a method according to the first aspect or any one of the possible implementations of the first aspect. Specifically, the communication device includes a corresponding unit that performs a method according to the first aspect or any one of the possible implementations of the first aspect.

[0020] According to a fourth aspect, the present application provides a communication device configured to perform a method according to the second aspect or any one of the possible implementations of the second aspect. Specifically, the communication device includes a corresponding unit for performing a method according to the second aspect or any one of the possible implementations of the second aspect.

[0021] According to a fifth aspect, the present application provides a computer-readable storage medium configured to store a computer program used to execute the first aspect and possible implementations of the first aspect.

[0022] According to a sixth aspect, the present application provides a computer-readable storage medium configured to store a computer program used to carry out the second aspect and possible implementations of the second aspect.

[0023] According to a seventh aspect, the present application provides a computer program product comprising computer code or instructions which, when executed, implement the first aspect or any one of the possible implementations of the first aspect.

[0024] According to an eighth aspect, the present application provides a computer program product comprising computer code or instructions which, when executed, implement the second aspect or any one of the possible implementations of the second aspect.

[0025] According to a ninth aspect, the present application provides a computer program configured to perform the first aspect and possible implementations of the first aspect.

[0026] According to a tenth aspect, the present application provides a computer program configured to perform the second aspect and possible implementations of the second aspect.

[0027] According to an eleventh aspect, the present application provides a wireless communication system including a transmitting device and a receiving device, the transmitting device configured to perform the first aspect and a possible implementation thereof, and the receiving device configured to perform the second aspect and a possible implementation thereof. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a schematic diagram of channel division when the bandwidth is 160 MHz according to an embodiment of the present application;

[0029] [Figure 2] 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

[0030] [Figure 3] 1 is a schematic flowchart of a puncturing information indicating method according to an embodiment of the present application;

[0031] [Figure 4] 2 is a schematic diagram of the format of some fields of a MU PPDU according to an embodiment of the present application;

[0032] [Figure 5] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0033] [Figure 6a] 1 is a schematic diagram of the format of the first symbol of a universal field according to an embodiment of the present application;

[0034] [Figure 6b]1 is a schematic diagram of the format of the first symbol of a universal field according to an embodiment of the present application;

[0035] [Figure 7a] 10 is a schematic diagram of a second symbol format of a universal field according to an embodiment of the present application.

[0036] [Figure 7b] 10 is a schematic diagram of a second symbol format of a universal field according to an embodiment of the present application.

[0037] [Figure 8] 10 is a schematic diagram of a division of fields after a universal field of a PPDU according to an embodiment of the present application.

[0038] [Figure 9] 1 is a schematic diagram of the location of a first content channel according to an embodiment of the present application.

[0039] [Figure 10] FIG. 2 is a schematic diagram of distribution of preamble puncturing information and position indication information according to an embodiment of the present application;

[0040] [Figure 11] 2 is a schematic diagram of a structure of location-indicating information according to an embodiment of the present application;

[0041] [Figure 12] FIG. 10 is a schematic diagram of preamble puncturing information when the preamble puncturing mode is 7 according to an embodiment of the present application;

[0042] [Figure 13] FIG. 2 is a schematic diagram of a format of the first field according to an embodiment of the present application;

[0043] [Figure 14]2 is a schematic diagram of the format of some fields of a SU PPDU according to an embodiment of the present application;

[0044] [Figure 15] 2 is a schematic diagram of the format of some fields of a MU PPDU according to an embodiment of the present application;

[0045] [Figure 16] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0046] [Figure 17] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0047] [Figure 18a] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0048] [Figure 18b] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0049] [Figure 19] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0050] [Figure 20] 2 is a schematic diagram of a structure of location-indicating information according to an embodiment of the present application;

[0051] [Figure 21] 2 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application;

[0052] [Figure 22] 1 is a schematic block diagram of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0053] In the specification, claims, and accompanying drawings of this application, terms such as "first," "second," "third," and "fourth" are intended to distinguish between different objects, but do not indicate a particular order. Furthermore, the terms "comprise," "have," and any other variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include unlisted steps or units, or may optionally further include other specific steps or units of the process, method, product, or apparatus.

[0054] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described with respect to an embodiment may be included in at least one embodiment of the present application. The phrase's appearance in various places throughout the present application does not necessarily refer to the same embodiment, nor does it refer to an embodiment that is separate or optional and exclusive from another embodiment. Those skilled in the art will understand, both explicitly and implicitly, that an embodiment described herein may be combined with another embodiment.

[0055] As used herein, "at least one" means one or more, "multiple" means two or more, and "at least two" means two or more than three (including three). The term "and / or" is used to describe an association relationship to describe related objects and indicates that three relationships may exist. For example, "A and / or B" can represent three cases: only A is present, only B is present, or both A and B are present, where A and B may be singular or plural. The symbol " / " generally represents an "or" relationship between related objects. "At least one of the following items" or similar phrases refers to any combination of these items, including a single item or a combination of multiple items. For example, at least one (piece of) a, b, or c can represent a, b, c, "a and b," "a and c," "b and c," or "a, b, and c," where a, b, and c can be singular or plural.

[0056] The following describes embodiments of the present application with reference to the accompanying drawings.

[0057] First, the network architecture in the embodiment of the present application is described.

[0058] The methods provided herein may be applied to various communication systems, such as Internet of Things (IoT) systems, narrow band internet of things (NB-IoT) systems, long term evolution (LTE) systems, 5th-generation (5G) communication systems, and new communication systems emerging in future communication developments (e.g., 6G). Furthermore, the methods provided herein may be further applied to wireless local area network (WLAN) systems, such as wireless-fidelity (Wi-Fi), etc. The methods provided herein may also be applied to the following communication systems:

[0059] The communication system includes an access point (AP) device and station (STA) devices. The access point device may be understood as an access point entity, and the station device may be understood as a station entity. For example, the embodiments of the present application may be applicable to a scenario of communication between an AP and STAs in a WLAN. Optionally, the AP may communicate with a single STA, or the AP may communicate with multiple STAs simultaneously. Specifically, communication between the AP and multiple STAs may be further divided into downlink transmission, in which the AP simultaneously transmits signals to multiple STAs, and uplink transmission, in which multiple STAs transmit signals to the AP. For example, FIG. 2 is a schematic architecture diagram of a communication system according to an embodiment of the present application. FIG. 2 shows one access point device and two station devices, such as STA 1 and STA 2.

[0060] An AP may be an access point used by terminal devices such as mobile phones to access a wired (or wireless) network. It is primarily deployed in homes, buildings, and parks. A typical coverage radius is several tens of meters to hundreds of meters. Of course, access points can also be deployed outdoors. An AP is equivalent to a bridge connecting a wired network to a wireless network. APs are primarily used to connect wireless network clients to each other and then connect the wireless network to an Ethernet network. Specifically, an AP may be a terminal device (e.g., a mobile phone) or a network device (e.g., a router) with a wireless-fidelity (Wi-Fi) chip. An AP may also support the 802.11be standard or next-generation standards. An AP may also be compatible with multiple wireless local area network (WLAN) standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. The STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example, the STA may be a mobile phone supporting Wi-Fi communication, a tablet computer supporting Wi-Fi communication, a set-top box supporting Wi-Fi communication, a smart TV supporting Wi-Fi communication, a smart wearable device supporting Wi-Fi communication, an in-vehicle communication device supporting Wi-Fi communication, or a computer supporting Wi-Fi communication. Optionally, the STA may be a device supporting the 802.11be standard or a next-generation standard. The STA may also be compatible with multiple wireless local area network (WLAN) standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0061] In this embodiment of the present application, the transmitting device may be an access point device or a station device, and the receiving device may also be an access point device or a station device. For example, the transmitting device may be an access point device, and the receiving device may also be an access point device. In another example, the transmitting device may be a station device, and the receiving device may also be a station device. In another example, the transmitting device is an access point device, and the receiving device is a station device. In another example, the transmitting device is a station device, and the receiving device is an access point device.

[0062] In this embodiment of the present application, an example in which a transmitting device transmits a PPDU to a receiving device is used to describe the puncturing information indication method provided in this embodiment of the present application, and it can be understood that this method can be applied to various types of PPDUs, for example, a PPDU may include a multi-user physical protocol data unit (multiple-user PHY protocol data unit, MU PPDU), a single-user physical protocol data unit (single-user PHY protocol data unit, SU PPDU), a trigger-based physical protocol data unit (trigger-based PHY protocol data unit, TB PPDU), etc.

[0063] When a transmitting device transmits preamble puncturing information to a receiving device, as shown in FIG. 1, the transmitting device may use a channel of a PPDU to carry the preamble puncturing information, for example, transmit the preamble puncturing information on subchannel 1 to subchannel 8.

[0064] The above method for transmitting preamble puncturing information on all subchannels wastes resources and causes high signaling overhead. Therefore, this embodiment of the present application provides a puncturing information indication method to reduce signaling overhead and avoid wasting resources.

[0065] 3 is a schematic flowchart of a puncturing information indicating method according to an embodiment of the present application. As shown in FIG. 3, the method includes the following steps:

[0066] 301: A transmitting device generates a PPDU including a preamble, where the preamble includes preamble puncturing information.

[0067] 302: The transmitting device transmits preamble puncturing information on a first content channel, where the total bandwidth of the first content channel is smaller than the bandwidth of the PPDU.

[0068] In response, the receiving device receives preamble puncturing information on the first content channel, and determines a channel usage status of the PPDU based on the preamble puncturing information.

[0069] According to the technical solution provided in this application, the preamble puncturing information is transmitted on a first content channel, and the total bandwidth of the first content channel is smaller than the bandwidth of the PPDU. In other words, the transmitting device reuses some subchannels of the PPDU to transmit the preamble puncturing information. Compared with an aspect in which the preamble puncturing information is transmitted on all subchannels of the PPDU under the instruction of specifically using one field, this method can reduce signaling overhead.

[0070] First, to better explain the first content channel in step 302 and the preamble puncturing information in step 301, the following describes the format of the PPDU in detail.

[0071] 4 is a schematic diagram of the format of some fields of an MU PPDU according to an embodiment of the present application. As shown in FIG. 4, in 802.11ax, the MU PPDU may include a legacy short training field (L-STF), a legacy long training field (L-LTF), a legacy signal field (L-SIG), a repeated legacy signal field (RL-SIG), a high efficiency signal field A (HE-SIG-A), and a high efficiency signal field B (HE-SIG-B).

[0072] FIG. 5 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application. As shown in FIG. 5, a PPDU in 802.11 may include not only an L-STF, an L-LTF, an L-SIG, and an RL-SIG, but also a universal-SIG (U-SIG) field. The universal field may include two symbols. It can be understood that the PPDU shown in FIG. 5 may include an MU PPDU, and may further include an SU PPDU, etc.

[0073] In one possible implementation, the preamble puncturing information is located within the universal signaling field; or the preamble puncturing information is located in a field after the universal signaling field. For example, as shown in FIG. 5, the field after the universal field may include an extremely high throughput signal field (EHT-SIG). It can also be said that the preamble puncturing information is located within the universal signaling field, or that the preamble puncturing information is carried in the universal signaling field. The two types of descriptions are not limiting in this implementation aspect of the present application.

[0074] In one possible implementation, the position indication information described below is located within the universal signaling field. When both the position indication information and the preamble puncturing information are located within the universal signaling field, it can be understood that the position indication information may be located within a first symbol of the universal signaling field, and the preamble puncturing information may be located within a second symbol of the universal signaling field.

[0075] For example, if the location indication information is located in the first symbol of the universal signaling field and the number of bits of the location indication information is 4, the format of the first symbol of the universal field is shown in Figures 6a and 6b, and the format of the second symbol of the universal field is shown in Figures 7a and 7b. Optionally, as shown in Figure 6a, the first symbol of the universal field may include a physical layer protocol data unit version (PPDU version) subfield, a basic service set color (BSS color) subfield, a location indication information subfield (indication subfield), a reserved subfield, a cyclic redundancy code (CRC) subfield, and a tail bit subfield. Optionally, as shown in FIG. 6b, the first symbol of the universal field may include a physical layer protocol data unit version (PPDU version) subfield, a basic service set color (BSS color) subfield, a PPDU format subfield, a transmit opportunity (TXOP) subfield, a position indication information subfield, and a reserved subfield.

[0076] Optionally, as shown in Figure 7a, the second symbol of the universal field may include a physical layer protocol data unit format subfield, a transmit opportunity (TXOP) subfield, an uplink / downlink (UL / DL) subfield, a reserved subfield, a CRC subfield, and a tail bits subfield. Optionally, as shown in Figure 7b, the second symbol of the universal field may include an uplink / downlink (UL / DL) subfield, a reserved subfield, a CRC subfield, and a tail bits subfield.

[0077] It may be understood that in addition to the fields shown in Figures 6a, 6b, 7a, and 7b, the universal field may further include a spatial reuse subfield, a guard interval + long training field (GI + LTF) subfield, a Doppler subfield, a space-time block code (STBC) subfield, a pre-fec padding factor subfield, a packet enhanced disambiguity (PE) subfield, etc. It may be understood that the specific locations of the fields shown in Figures 6a, 6b, 7a, and 7b are not limited in this embodiment of the present application.

[0078] As shown in Figure 8, for simplicity of description, the fields following the universal field will be successively replaced with SIG1, SIG2, SIG3, etc. in the following.

[0079] The first content channel in step 302 is described in detail below.

[0080] In this embodiment of the present application, the content carried on the first content channel is preamble puncturing information, and the first content channel is distributed over several channels of the PPDU. The first content channel may be distributed over several consecutive subchannels of the PPDU, or the first content channel may be distributed over several non-consecutive subchannels of the PPDU. For example, the bandwidth of the PPDU is 320 MHz, and the first content channel may be distributed over several channels, from channel 1 to channel 16. That is, the total bandwidth of the first content channel is less than 320 MHz.

[0081] Furthermore, in this embodiment of the present application, different content channels are distinguished in a field after the U-SIG field. For example, a first content channel and a second content channel are distinguished in the SIG1 field. Preamble puncturing information may be located in a field after the U-SIG field. For example, the preamble puncturing information may be located in the Nth field (SIGN field) after the U-SIG field, where N is 1 or greater. For example, N=1, N=2, or N=3. As another example, the preamble puncturing information may be located within a field after the U-SIG field, and the first content channel includes one or more subchannels. For example, the preamble puncturing information may be located in M ​​consecutive different fields after the U-SIG field, where M is 1 or greater. For example, M=1, M=2, or M=3. For example, the preamble puncturing information may be located in the EHT-SIG field after the U-SIG field, and the first content channel may include subchannels corresponding to IDs 14 to 16. It may be understood that the above M and N may be preset or may be indicated by position indication information. It may be understood that the description of the preamble puncturing information is applicable to all of the following embodiments.

[0082] For example, as shown in Figure 9, the first content channel is the portion where the SIG1 field is located on the subchannel corresponding to ID 16. In other words, the preamble puncturing information transmitted on the first content channel can be understood as the preamble puncturing information located in the SIG1 field on the subchannel corresponding to ID 16.

[0083] In one possible implementation, the first content channel may include a predetermined subchannel. The first content channel may include a predetermined odd-numbered subchannel, the first content channel may include a predetermined even-numbered subchannel, or the first content channel may include a predetermined designated subchannel. The bandwidth of the subchannel is a fixed value. For example, the fixed value may include 20 MHz. Alternatively, the fixed value may include a bandwidth value with another granularity. In this embodiment of the present application, the specific value of the fixed value is not limited. It may be understood that the predetermined odd-numbered subchannel may be all odd-numbered subchannels or some odd-numbered subchannels. Similarly, the predetermined even-numbered subchannel may be all even-numbered subchannels or some even-numbered subchannels. It may be understood that the predetermined subchannel may be preset by a protocol, set by a device manufacturer, or the like.

[0084] As shown in Figure 9, take an example where the PPDU bandwidth is 320 MHz and the subchannel bandwidth is 20 MHz. Odd-numbered subchannels are subchannels corresponding to odd-numbered identifier (ID) indices in Figure 9, and even-numbered subchannels are subchannels corresponding to even-numbered IDs in Figure 9. For example, a first content channel may include a subchannel corresponding to ID 16, and subchannels corresponding to IDs 1 through 15 may be understood as a second content channel. In this case, the second content channel is used to carry other information.

[0085] In the technical solution of the present application, the first content channel is preset, and there is no need for dedicated information to indicate the frequency domain location of the first content channel, which further reduces signaling overhead.

[0086] In one possible implementation, the transmitting device may indicate the frequency domain location of the first content channel by using the position indication information. As shown in FIG. 10, the transmitting device may indicate the frequency domain location of the first content channel by using the position indication information, so that the receiving device receives the preamble puncturing information on the first content channel.

[0087] The location indication information is described separately as follows:

[0088] Solution 1

[0089] The position indication information may indicate whether the first content channel includes an odd-numbered subchannel or an even-numbered subchannel. The number of bits of the position indication information is 1 bit, as shown in Table 1 and Table 2. [Table 1] [Table 2]

[0090] It may be understood that when the 1-bit location indication information indicates the frequency domain location of the first content channel, the first content channel may include all odd-numbered subchannels or all even-numbered subchannels.

[0091] Solution 2

[0092] The position indication information may indicate any of the following: that the first content channel includes odd-numbered sub-channels, that the first content channel includes even-numbered sub-channels, or that the first content channel includes the specified sub-channel.

[0093] For solution 2, the number of bits of the position indication information can be 2 bits, 3 bits, 4 bits, or 6 bits.

[0094] It can be understood that in the following different scenarios, the number of bits of the position indication information is related to the bandwidth of the PPDU and the bandwidth of the sub-channel. For example, a larger bandwidth of the PPDU indicates a larger number of bits of the position indication information, and a larger bandwidth of the sub-channel indicates a smaller number of bits of the position indication information. In order to better explain the specific indication aspect of the position indication information, the following provides separate explanations using an example in which the bandwidth of the PPDU is 320 MHz and the bandwidth of the sub-channel is 20 MHz.

[0095] Scenario 1: The number of bits of the position indication information is 2 bits.

[0096] In this case, the position indication information may indicate one of the following: that the first content channel includes all odd-numbered subchannels, that the first content channel includes all even-numbered subchannels, or that the first content channel includes a specified subchannel. The specified subchannel may also be preset. For example, if the position indication information is 00, it indicates that the first content channel includes all odd-numbered subchannels; if the position indication information is 01, it indicates that the first content channel includes all even-numbered subchannels; and if the position indication information is 10, it indicates that the first content channel includes a specified subchannel. In another example, if the position indication information is 01, it indicates that the first content channel includes all odd-numbered subchannels; if the position indication information is 10, it indicates that the first content channel includes all even-numbered subchannels; and if the position indication information is 11, it indicates that the first content channel includes a specified subchannel.

[0097] Scenario 2: The number of bits of the position indication information is 3 bits.

[0098] In this case, the location indication information may indicate that the first content channel includes an odd-numbered subchannel or an even-numbered subchannel. Specifically, the location indication information may indicate either an odd-numbered subchannel or an even-numbered subchannel. For example, the first content channel includes one of odd-numbered subchannels ID 3, ID 5, ID 7, ID 9, ID 11, ID 13, or ID 15. For example, if the location indication information is 001, it indicates that the first content channel includes a subchannel corresponding to ID 3; if the location indication information is 010, it indicates that the first content channel includes a subchannel corresponding to ID 5; or if the location indication information is 111, it indicates that the first content channel includes a subchannel corresponding to ID 15. In another example, the first content channel includes one of the even-numbered subchannels ID 2, ID 4, ID 6, ID 8, ID 10, ID 12, ID 14, and ID 16. If the position indication information is 000, it indicates that the first content channel includes a subchannel corresponding to ID 2; if the position indication information is 111, it indicates that the first content channel includes a subchannel corresponding to ID 16.

[0099] Scenario 3: The number of bits of the position indication information is 4 bits.

[0100] In this case, the location indication information can indicate any one of the sub-channels corresponding to ID 1 to ID 16.

[0101] For example, if the location indication information is 0001, it indicates that the first content channel includes a sub-channel corresponding to ID 2; or if the location indication information is 1111, it indicates that the first content channel includes a sub-channel corresponding to ID 16.

[0102] Scenario 4: The number of bits of position indication information is 6 bits.

[0103] In this case, the position indication information may not only indicate the frequency domain position of the first content channel, but also indicate mode information corresponding to the frequency domain position. The mode information corresponding to the frequency domain position may be understood as position classification information of the first content channel. The position indication information includes mode indication information and corresponding indication information. The mode indication information indicates a different mode, and the corresponding indication information indicates a specific frequency domain position in the mode indicated by the mode indication information. Optionally, the mode information may include three modes. For example, the first mode may be that the first content channel includes odd-numbered subchannels, the second mode may be that the first content channel includes even-numbered subchannels, and the third mode may be that the first content channel includes a specified subchannel.

[0104] For example, as shown in FIG. 11 , the number of bits of the mode indication information is 2, and the number of bits of the corresponding indication information is 4. For example, if the mode indication information is 00, the corresponding indication information may indicate any one of the subchannels corresponding to ID 1 to ID 16. In another example, if the mode indication information is 01, the corresponding indication information may indicate any one of the odd-numbered subchannels. In another example, if the mode indication information is 10, the corresponding indication information may indicate any one of the even-numbered subchannels. In another example, if the mode indication information is 11, the corresponding indication information may indicate a value in a mapping set, where the mapping set includes a correspondence between the frequency domain location of the first content channel and the value.

[0105] When the mode indication information is 11, optionally, as shown in Table 3, if the decimal value corresponding to the corresponding indication information value is 0, it may indicate that the bandwidth of the PPDU is 20 MHz. If the decimal value corresponding to the corresponding indication information value is 1, it may indicate that the frequency domain location of the first content channel is on a subchannel corresponding to a secondary 20 MHz bandwidth and the bandwidth of the PPDU is 40 MHz. If the decimal value corresponding to the corresponding indication information value is 3, it may indicate that the frequency domain location of the first content channel is on a second subchannel corresponding to a secondary 40 MHz bandwidth and the bandwidth of the PPDU is 80 MHz. Also, R20 may be understood as 20_2, i.e., on the second subchannel corresponding to a 40 MHz bandwidth. If the decimal value corresponding to the corresponding indication information value is 6, it may indicate that the frequency domain location of the first content channel is on a subchannel corresponding to a second 20 MHz bandwidth corresponding to a secondary 80 MHz bandwidth.

[0106] In Table 3, it can be understood that if the index is 1, the preamble puncturing information may not be included, or the information transmitted on the subchannel corresponding to the secondary 20 MHz bandwidth may be the same as (e.g., perfectly duplicated) the information transmitted on the subchannel corresponding to the primary 20 MHz bandwidth. [Table 3]

[0107] Optionally, the definitions of indexes 9-16 in Table 3 may alternatively be replaced by the definitions in Table 4. [Table 4]

[0108] If the mode indication information is 11, optionally as shown in Table 5, in Table 5: (outside 1) TIFF2026040516000006.tif11170 may indicate that a subchannel is not punctured, "x" may indicate that a subchannel is punctured, "-" indicates that there is no channel, and "?" indicates that the puncturing status of the subchannel is irrelevant. For example, if the decimal value corresponding to the corresponding indication information value is 0, it indicates that the bandwidth of the PPDU is 20 MHz and all subchannels of the PPDU are not punctured. If the decimal value corresponding to the corresponding indication information value is 4, it indicates that the bandwidth of the PPDU is 160 MHz, the subchannels corresponding to the secondary 20 MHz bandwidth are punctured, and it is not indicated whether the subchannels corresponding to the secondary 80 MHz bandwidth are punctured. [Table 5]

[0109] It can be understood that the specific number of bits of the position indication information is not limited in this embodiment of the present application. For example, the specific number of bits of the position indication information may be 8 bits or 7 bits. More bits indicate more modes.

[0110] The implementation of this embodiment of the present application not only makes the indication manner of the position indication information in the present application more flexible, but also maintains a certain degree of compatibility.

[0111] Optionally, in Scenario 2, Scenario 3, and Scenario 4, the location indication information may indicate the frequency domain location of the first content channel and may further indicate the bandwidth value of the PPDU. Specifically, the first content channel includes a subchannel corresponding to the largest secondary bandwidth in the PPDU's bandwidth. For example, if the location indication information indicates that the first content channel is on a subchannel (ID 3 and / or ID 4) corresponding to the secondary 40 MHz bandwidth, the PPDU's bandwidth is 80 MHz. In another example, if the first content channel indicated by the location indication information is on a subchannel corresponding to the secondary 80 MHz bandwidth (i.e., subchannels corresponding to ID 5 to ID 8), the PPDU's bandwidth is 160 MHz. In another example, if the first content channel indicated by the location indication information is on a subchannel corresponding to the secondary 160 MHz bandwidth (i.e., subchannels corresponding to ID 9 to ID 16), the PPDU's bandwidth is 320 MHz.

[0112] Optionally, the bandwidth of the PPDU may alternatively be 240 MHz. Therefore, in order to distinguish whether the bandwidth of the PPDU is 240 MHz or 160 MHz, in this embodiment of the present application, the maximum sub-bandwidth of the 160 MHz bandwidth is defined as an 80 MHz bandwidth, and the maximum sub-bandwidth of the 240 MHz bandwidth is defined as a third 80 MHz bandwidth.

[0113] Optionally, if the first content channel includes a sub-channel corresponding to a second secondary 80 MHz bandwidth, the bandwidth of the PPDU is 160 MHz. If the first content channel includes a sub-channel corresponding to a third secondary 80 MHz bandwidth, the bandwidth of the PPDU is 240 MHz. The first secondary 80 MHz bandwidth may be understood as the first 80 MHz bandwidth in which the primary 20 MHz bandwidth is located.

[0114] Optionally, in addition to the above-described manner in which the bandwidth of the PPDU is indicated, the bandwidth of the PPDU may be indicated by adding a bandwidth subfield to the universal signaling field. For example, the reserved subfield in FIG. 6a is replaced with the bandwidth subfield. In another example, the number of bits of the position indication information may be 3, and the reserved subfield in FIG. 6a may be replaced with the bandwidth subfield, which has a number of bits. The bandwidth subfield may indicate that the bandwidth of the PPDU is one of 20 MHz, 40 MHz, 80 MHz, 160 MHz, 240 MHz, or 320 MHz. The bandwidth subfield is added to the universal signaling field so that the receiving device can know the bandwidth of the PPDU in advance. This facilitates the configuration of frequency band resources by the receiving device.

[0115] It may be understood that the first content channel may further include subchannels with good channel conditions, for example, the transmitting device may select a subchannel with good channel conditions from the subchannels corresponding to the largest sub-bandwidth to transmit the preamble puncturing information.

[0116] In this embodiment of the present application, the frequency domain location of the first content channel is indicated by adding several bits to the location indication information, so that the receiving device can receive the preamble puncturing information on the first content channel.

[0117] 12 is a schematic diagram of preamble puncturing information when the preamble puncturing mode in the MU PPDU is 7. When the preamble puncturing mode is 7, it may indicate that the bandwidth of the PPDU is 160 / 80 MHz+80 MHz. The channel puncturing manner is that any or all subchannels corresponding to the secondary 40 MHz (secondary 40, S40) bandwidth are punctured.

[0118] In the above-mentioned solutions, the indication manner of the preamble puncturing information is inflexible. For example, the transmitting device cannot indicate to the receiving device the puncturing status of the subchannel corresponding to the secondary 80 MHz bandwidth; or the transmitting device cannot indicate to the receiving device both the puncturing status of the subchannel corresponding to the secondary 40 MHz bandwidth and the puncturing status of the subchannel corresponding to the secondary 80 MHz bandwidth.

[0119] Therefore, this embodiment of the present application further provides preamble puncturing information that can more flexibly indicate the puncturing status of the channel.

[0120] In this embodiment of the present application, the field in which the preamble puncturing information is located is, for example, referred to as the first field, and the time-frequency resources used by U-SIG are reused by the first field; or, alternatively, the time-frequency resources used by SIGn are reused by the first field, where n is a positive integer, for example, n=1, 2, 3, or 4. In the following, the field in which the preamble puncturing information is located is referred to as the first field.

[0121] In one possible implementation, the preamble puncturing information may include a bitmap indicating whether a subchannel is punctured. The bitmap indication may comprehensively describe whether all subchannels are occupied, allowing for more flexible indication of the channel puncturing status. For example, if the PPDU bandwidth is 320 MHz and the subchannel bandwidth is 20 MHz, the number of bits in the preamble puncturing information may be 16. For example, "1" indicates that the subchannel is punctured, and "0" indicates that the subchannel is not punctured. For example, if the preamble puncturing information is 0000 0000 0001 1110, the receiving device may receive the preamble puncturing information and determine that the subchannels corresponding to ID 2 to ID 5 are punctured. Optionally, "0" may indicate that the subchannel is punctured, and "1" may indicate that the subchannel is not punctured.

[0122] Optionally, the number of bits of the preamble puncturing information may alternatively be 14 bits, and the 14 bits may indicate the puncturing status of subchannels other than the subchannel corresponding to ID 1 and the subchannel occupied by the preamble puncturing information. For example, if the subchannel occupied by the preamble puncturing information is the subchannel corresponding to ID 16, the 14 bits may indicate the puncturing status of subchannels corresponding to ID 2 to ID 15.

[0123] It can be understood that if the bandwidth of the PPDU is 40 MHz, the transmitting device does not need to transmit preamble puncturing information, and does not need to transmit position indication information.

[0124] It may be appreciated that in addition to indicating the puncturing status of the subchannels in the sequence of their numbers, the preamble puncturing information may also indicate the puncturing status of the subchannels in another agreed upon sequencing manner. If the subchannels corresponding to ID 2 through ID 5 are to be punctured, the preamble puncturing information may alternatively be 0111 1000 0000 0000.

[0125] 13 is a schematic diagram of a format of a first field according to an embodiment of the present application. The field may include 14 or 16 bits of preamble puncturing information. Optionally, the field may further include a reserved subfield, a CRC subfield, and a tail bit subfield. Optionally, the field may further include a CRC subfield and a tail bit subfield. It may be understood that in addition to the preamble puncturing information, the information carried in the first field shown in FIG. 13 may further include other information, such as resource unit combination information.

[0126] 13, it can be understood that the preamble puncturing information may further indicate the bandwidth of the PPDU. For example, the puncturing state of a subchannel is indicated using 1111 1111 1111 1000. Upon receiving the preamble puncturing information, the receiving device may further know that the bandwidth of the PPDU is 320 MHz.

[0127] It may be understood that the preamble puncturing information shown above is illustrated by using a bandwidth granularity of 20 MHz as an example. In particular implementations, bandwidth granularities of 10 MHz, 40 MHz, 80 MHz, etc. may alternatively be used. Correspondingly, the bandwidth of a subchannel may alternatively be 10 MHz, 40 MHz, etc.

[0128] In one possible implementation, the preamble puncturing information may be indicated in a mode+bandwidth indication manner. As shown in Figure 13, in the mode+bandwidth indication manner, the preamble puncturing information may indicate different bandwidths or may indicate preamble puncturing modes.

[0129] As an example, if the preamble puncturing information is 0000 0000 0000 0000 (0 in decimal notation), it may indicate that the bandwidth of the PPDU is 20 MHz.

[0130] If the preamble puncturing information is 0000 0000 0000 0010 (1 in decimal notation), it may indicate that the bandwidth of the PPDU is 40 MHz.

[0131] If the preamble puncturing information is 0000 0000 0000 0011 to 0000 0000 0000 0100, it indicates that the bandwidth of the PPDU is 80 MHz and may indicate the preamble puncturing status of the subchannel corresponding to the 80 MHz bandwidth. In this case, it can be understood that there are six corresponding indexes, i.e., indexes corresponding to 3 to 8 in decimal notation. The preamble puncturing information does not include the case where the subchannel corresponding to the primary 20 MHz bandwidth is punctured. It also does not include the case where two subchannels corresponding to the secondary 40 MHz bandwidth are punctured.

[0132] The rest can be inferred by analogy. The preamble puncturing information may indicate that the bandwidth is 160 MHz and indicate the puncturing status of eight subchannels corresponding to the first 80 MHz bandwidth and the 280 MHz bandwidth. In this case, the preamble puncturing information may include 125 (2 x 2 x 2 x 2 x 2 x 2 x 2 - 3) index values. Optionally, if the bandwidth of the PPDU is 160 MHz, the preamble puncturing information may alternatively include only the puncturing status of the subchannel corresponding to the first 80 MHz bandwidth.

[0133] Moreover, the preamble puncturing information may further indicate that the bandwidth of the PPDU is 240 MHz and indicate the puncturing status of the subchannel corresponding to the first 80 MHz bandwidth.

[0134] Furthermore, the preamble puncturing information may further indicate that the bandwidth of the PPDU is 320 MHz and indicate the puncturing status of subchannels corresponding to the first 80 MHz bandwidth. Optionally, the preamble puncturing information may further indicate that the bandwidth of the PPDU is 320 MHz and indicate the puncturing status of subchannels corresponding to the first 80 MHz bandwidth and the second 80 MHz bandwidth. Optionally, the preamble puncturing information may further indicate that the bandwidth of the PPDU is 320 MHz and indicate the puncturing status of subchannels corresponding to the first 80 MHz bandwidth and the third 80 MHz bandwidth. Optionally, the preamble puncturing information may further indicate that the bandwidth of the PPDU is 320 MHz and indicate the puncturing status of subchannels corresponding to the first 80 MHz bandwidth and the fourth 80 MHz bandwidth.

[0135] In addition to the embodiment shown in FIG. 13, there may be other indication embodiments of the preamble puncturing information. For example, a 14-bit preamble puncturing indication may be compressed to convey robustness or other information. For example, the indication granularity is 80 MHz over several bandwidths. For example, the 80 MHz bandwidth in which the main 20 MHz bandwidth is located is indicated based on the granularity of the 20 MHz bandwidth, and the following three 80 MHz bandwidths are indicated based on the granularity of the three 80 MHz bandwidths. Three bits can indicate three 80 MHz bandwidths.

[0136] If the preamble puncturing information is carried in the SIG1 field, the bit length of the SIG1 field will increase, which will increase signaling overhead.Compared with carrying the preamble puncturing information in the SIG field, the technical solution of the present application not only can more flexibly indicate the puncturing status of the subchannel, but also can reduce signaling overhead by carrying 16-bit or 14-bit preamble puncturing information in the first field.

[0137] It will be appreciated that the foregoing description of the first content channel and preamble puncturing information is applicable to all of the following embodiments.

[0138] Finally, specific embodiments to which the present application is applied are described below using an example with reference to preamble puncturing information and the first content channel. The following embodiments and the accompanying drawings are all illustrated by using an example in which the PPDU bandwidth is 320 MHz and the subchannel bandwidth is 20 MHz.

[0139] Embodiment 1 FIG. 14 is a schematic diagram of the format of some fields of a SU PPDU according to an embodiment of the present application. The first content channel includes all even-numbered subchannels, excluding punctured even-numbered subchannels. The first field, in which the preamble puncturing information is located, may reuse the time-frequency resources used by the SIG1 field. As shown in FIG. 14, the even-numbered subchannels occupied by the first field may be used to transmit the preamble puncturing information. It may be understood that the specific information content carried on the odd-numbered subchannels is not limited in this embodiment of the present application.

[0140] Embodiment 2 FIG. 15 is a schematic diagram of the format of some fields of an MU PPDU according to an embodiment of the present application. As shown in FIG. 15, the SIG1 field of the MU PPDU includes a SIG1-A subfield and a SIG1-B subfield. The first content channel includes all even-numbered subchannels and does not include punctured even-numbered subchannels. The first field, in which the preamble puncturing information is located, may reuse the time-frequency resources originally used by the SIG1-A subfield. As shown in FIG. 15, the even-numbered subchannels occupied by the first field may be used to transmit the preamble puncturing information.

[0141] Optionally, the first field may include a CRC subfield and a tail bits subfield, or alternatively, the first field may not include a CRC subfield and a tail bits subfield.

[0142] It may be understood that some or all of the SIG1-A subfield may be reused by the first field, which is not limited in this embodiment of the present application.

[0143] Embodiment 3 FIG. 16 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application. As shown in FIG. 16, the position indication information is located within the first symbol of the U-SIG field. The position indication information indicates that the first content channel includes a subchannel corresponding to ID 16. It is predefined that the preamble puncturing information is located within the second symbol of the U-SIG field. In this case, the second symbol of the U-SIG field is reused as the first field in which the preamble puncturing information is located, and the subchannel corresponding to ID 16 occupied by the second symbol of the U-SIG field may be used to transmit the preamble puncturing information.

[0144] It should be understood that the format of the universal field in embodiment 3 may be separately shown in Figures 6a and 7a. A CRC subfield and a tail bit subfield are added to the first symbol of the universal field, so that a receiving device can obtain preamble puncturing information by parsing the first symbol.

[0145] Embodiment 4 17 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application. As shown in FIG. 17, the position indication information is located in the U-SIG field, and the time-frequency resource originally used by the SIG1 field is reused as the first field in which the preamble puncturing information is located. Furthermore, it may be predefined that the preamble puncturing information is located in the first field after the U-SIG field.

[0146] It can be understood that the format of the universal field in embodiment 4 may be shown separately in Figures 6b and 7b.

[0147] Whether the location indication information is specifically located in the first symbol or the second symbol of the U-SIG field is not limited in this embodiment of the present application.

[0148] Embodiment 5 18a and 18b are schematic diagrams of formats of some fields of a PPDU according to an embodiment of the present application. In this embodiment of the present application, preamble puncturing information may be predefined to be located in the first and second fields after the U-SIG field. As shown in FIG. 18a, the first content channel and the second content channel may be distinguished in the SIG1 and SIG2 fields in FIG. 18a. For example, the subchannel corresponding to ID 16 may be the first content channel, and the subchannels corresponding to IDs 1 to 15 may be the second content channel.

[0149] As shown in Figure 18b, the location indication information may indicate that the frequency domain location of the first content channel is the subchannel corresponding to ID 15 and / or ID 16. For example, the location indication information may indicate that the first content channel includes the subchannel corresponding to ID 15, and it may be predefined that the preamble puncturing information is located within the same two fields. In this case, the preamble puncturing information may be located in the first field shown in Figure 18b.

[0150] Embodiment 6 19 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application. This embodiment of the present application may be applied to a requirement that a receiving device supports operation only on some bandwidths. For example, the receiving device supports receiving preamble puncturing information only on S20 and / or S40.

[0151] If the receiving device supports reading preamble puncturing information only on S20 and S40, there are two possible scenarios: one is that there are available channels on S20 and S40, and the other is that there are no available channels on S20 and S40. There are available channels on S20 and S40. For example, if S20 and / or S40 are not punctured, the location indication information may indicate the subchannels corresponding to ID 2 through ID 4.

[0152] As shown in FIG. 20, for example, the corresponding instruction may be 4 bits, where y and z may be 2 bits each, y may indicate four bandwidths of 40 MHz, 80 MHz, 160 MHz, and 320 MHz, and z may indicate three channels of ID 2, ID 3, and ID 4 (if there are channels available on S20 and S40).

[0153] Embodiment 7 FIG. 21 is a schematic diagram of the format of some fields of a PPDU according to an embodiment of the present application. In this embodiment of the present application, the preamble puncturing information may be located in more fields. As shown in FIG. 21, the first content channel indicated by the position indication information is located on the subchannel corresponding to ID 16, and the preamble puncturing information is located in the first field. Furthermore, the first field may further include the position indication information in addition to the preamble puncturing information. The position indication information may indicate the subchannel corresponding to ID 3, and the preamble puncturing information is located in the first field carried on the subchannel corresponding to ID 3.

[0154] In another example, the instruction is performed using learned preamble puncturing information and other information. For example, if it is known that all four channels of the first 80 MHz bandwidth are used, the transmitting device may reuse the subchannels corresponding to ID 2, ID 3, and ID 4 and transmit the preamble puncturing information using the subchannels corresponding to ID 2, ID 3, and ID 4.

[0155] In the above-described embodiments, the bit length of the first field depicted in the accompanying drawings is the same as the bit length of the SIG1 field (or SIG2 field) or the second symbol of the U-SIG field; however, it can be understood that the bit length of the first field is not limited in the embodiments of the present application. For example, the bit length of the first field may instead be smaller than the length of the SIG1 field. As another example, the bit length of the first field may be smaller than the bit length of the second symbol of the U-SIG field. In other words, for example, part or all of the SIG1 field may be reused by the first field.

[0156] It may be understood that the first field may include other information in addition to the preamble puncturing information, for example, the other information may include information carried in the HE-SIG-A and / or HE-SIG-B fields in 802.11ax.

[0157] It may be understood that whether the punctured subchannel belongs to the second content channel is not limited in the embodiment of the present application.

[0158] It can be understood that in the above embodiment, the specific indication manner of the preamble puncturing information and the position indication information can be referred to the above description.

[0159] The above describes the embodiments of the present application in detail. The following describes the communication device of the present application.

[0160] As shown in FIG. 22, the communication device includes a processing unit 2201 and a transmitting unit 2202.

[0161] The processing unit 2201 is configured to generate a PHY protocol data unit (PPDU) including a preamble, where the preamble includes preamble puncturing information.

[0162] The transmitting unit 2202 is configured to transmit the preamble puncturing information on a first content channel, where the total bandwidth of the first content channel is smaller than the bandwidth of the PPDU.

[0163] The communication device in this embodiment of the present application has any function of the transmitting device in the above method, and the details will not be described again here.

[0164] 22 is reused. In another embodiment, the communication device includes a transceiver unit 2202 and a processing unit 2201.

[0165] The transceiver unit 2202 is configured to receive preamble puncturing information on a first content channel, the preamble puncturing information being included in a preamble of a PHY protocol data unit (PPDU), and the total bandwidth of the first content channel is less than the bandwidth of the PPDU.

[0166] The processing unit 2201 is configured to determine the channel usage status of the PPDU based on the preamble puncturing information.

[0167] The communication device in this embodiment of the present application has any function of the receiving device in the above method, and the details will not be described again here.

[0168] The above describes the transmitting device and the receiving device in the embodiment of the present application. The following describes possible product forms of the transmitting device and the receiving device. It should be understood that any form of product having the function of the transmitting device in FIG. 22 and any form of product having the function of the receiving device in FIG. 22 falls within the scope of protection of the embodiment of the present application. It should be further understood that the following description is merely an example, and the product forms of the transmitting device and the receiving device in the embodiment of the present application are not limited thereto.

[0169] In one possible product form, the transmitting device and receiving device in the embodiments of the present application may be implemented by using a common bus architecture.

[0170] The transmitting device includes a processor and a transceiver internally connected to the processor and communicating with the processor. The processor is configured to generate a PPDU including a preamble, the preamble including preamble puncturing information. The transceiver is configured to transmit the preamble puncturing information over a first content channel. The transceiver is further configured to transmit the PPDU. Optionally, the transmitting device may further include a memory configured to store instructions executed by the processor.

[0171] The receiving device includes a processor and a transceiver internally connected to the processor for communication with the processor. The transceiver is configured to receive preamble puncturing information on a first content channel, the preamble puncturing information being included in a preamble of a PPDU. The processor is configured to determine a channel usage status of the PPDU based on the preamble puncturing information. Optionally, the receiving device may further include a memory configured to store instructions executed by the processor.

[0172] In one possible product form, the transmitting and receiving devices in the embodiments of the present application may be implemented using a general-purpose processor.

[0173] A general-purpose processor implementing the transmitting device includes a processing circuit and an output interface interconnected to and in communication with the processing circuit. The processing circuit is configured to generate a PPDU including a preamble, the preamble including preamble puncturing information. The output interface is configured to transmit the preamble puncturing information. The output interface is further configured to transmit the PPDU. Optionally, the general-purpose processor may further include a storage medium configured to store instructions executed by the processing circuit.

[0174] A general-purpose processor implementing the receiving device includes a processing circuit and an input interface internally connected to and communicating with the processing circuit. The input interface is configured to receive a PPDU, the PPDU including a preamble, the preamble including preamble puncturing information. The processing circuit is configured to determine a channel usage state of the PPDU based on the preamble puncturing information. Optionally, the general-purpose processor may further include a storage medium configured to store instructions executed by the processing circuit.

[0175] In one possible product form, the transmitting and receiving devices in the embodiments of the present application may further be implemented using one or more field programmable gate arrays (FPGAs), programmable logic devices (PLDs), controllers, state machines, gate logic, discrete hardware components, any other suitable circuitry, or any combination of circuitry capable of performing the various functions described herein.

[0176] It should be understood that the transmitting device in the above product form has any function of the transmitting device in the above method embodiment, and the details will not be described again here. The receiving device in the above product form has any function of the receiving device in the above method embodiment, and the details will not be described again here.

[0177] It should be understood that the term "and / or" in this specification describes only an association relationship between related objects and indicates that three relationships may exist. For example, A and / or B can indicate three cases: only A exists, both A and B exist, and only B exists. Furthermore, the symbol " / " in this specification generally indicates an "or" relationship between related objects.

[0178] Those skilled in the art will recognize that the method steps and units described in the embodiments disclosed herein, in combination with the examples described herein, can be implemented by electronic hardware, computer software, or a combination thereof. To clearly explain the interchangeability between hardware and software, the above generally describes the steps and composition of each embodiment according to function. Whether a function is performed by hardware or software depends on the specific application and the design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0179] Those skilled in the art can clearly understand that for the sake of convenience, the detailed working processes of the above systems, devices and units may refer to the corresponding processes in the above method embodiments, and the details will not be described again here.

[0180] In some embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the division into units is merely a logical division of function, and other divisions may be used in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some functions may be omitted or not performed. Furthermore, the shown or discussed mutual couplings, or direct couplings, or communication connections may be implemented through some interfaces. Indirect couplings or communication connections between devices or units may be implemented electrically, mechanically, or in other ways.

[0181] Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, located in one location, or distributed over multiple network units, some or all of which may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0182] Furthermore, the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0183] When an integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application, whether inherently or contributing to the prior art, may be implemented in whole or in part in the form of a software product. A computer software product is stored in a storage medium and includes instructions for instructing a computer device (which may be a personal computer, a server, or a network device) or a processor to perform all or part of the steps of the method described in the embodiments of the present application. The storage medium includes any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0184] Additionally, the present application further provides a computer program for use in performing the operations and / or processes performed by a transmitting device in the puncturing information indication method provided herein.

[0185] The present application further provides a computer program for use in performing the operations and / or processes performed by a receiving device in the puncturing information indication method provided herein.

[0186] The present application further provides a computer-readable storage medium that stores computer instructions that, when executed on a computer, enable the computer to perform the operations and / or processes performed by a transmitting device in the puncturing information indication method provided herein.

[0187] The present application further provides a computer-readable storage medium that stores computer instructions that, when executed on a computer, enable the computer to perform the operations and / or processes performed by a receiving device in the puncturing information indication method provided herein.

[0188] The present application further provides a computer program product, which includes computer code or instructions that, when executed on a computer, implements the puncturing information indication method of the present application.

[0189] The present application further provides a computer program product, which includes computer code or instructions that, when executed on a computer, implements the puncturing information indication method of the present application.

[0190] The present application further provides a wireless communication system including a transmitting device and a receiving device according to the embodiment of the present application.

[0191] The above description is merely a specific implementation of the present application and is not intended to limit the scope of protection of the present application. Any modifications or replacements that can be easily determined by those skilled in the art within the technical scope disclosed in the present application fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims. [Example]

[0192] [Aspect 1] 1. A method for indicating puncturing information, the method comprising: generating a PHY protocol data unit (PPDU) including a preamble, the preamble including preamble puncturing information; transmitting the preamble puncturing information on a first content channel, wherein a total bandwidth of the first content channel is smaller than a bandwidth of the PPDU. method. [Aspect 2] 1. A method for indicating puncturing information, the method comprising: receiving preamble puncturing information on a first content channel, the preamble puncturing information being included in a preamble of a PHY protocol data unit (PPDU), and a total bandwidth of the first content channel being smaller than a bandwidth of the PPDU; determining a channel usage status of the PPDU based on the preamble puncturing information; method. Aspect 3 3. The method of claim 1, wherein the preamble further includes location indicating information, the location indicating information indicating a frequency domain location of the first content channel. Aspect 4 The method of aspect 3, wherein the position indication information is located in a universal (universal SIG, U-SIG) field, and the preamble puncturing information is located in a field after the U-SIG field. Aspect 5 5. The method of any one of aspects 1 to 4, wherein the first content channel includes odd-numbered subchannels, the first content channel includes even-numbered subchannels, or the first content channel includes designated subchannels, and the bandwidth of the subchannels is a fixed value. Aspect 6 If the first content channel includes a subchannel corresponding to a secondary 40 MHz bandwidth, the bandwidth of the PPDU is 80 MHz; If the first content channel includes a subchannel corresponding to a second secondary 80 MHz bandwidth, the bandwidth of the PPDU is 160 MHz; If the first content channel includes a third subchannel corresponding to an 80 MHz bandwidth, the bandwidth of the PPDU is 240 MHz; If the first content channel includes a subchannel corresponding to a secondary 160 MHz bandwidth, the bandwidth of the PPDU is 320 MHz; 6. The method of any one of embodiments 1 to 5. Aspect 7 1. A puncturing information indicating device, the device comprising: a processing unit configured to generate a PHY protocol data unit (PPDU) including a preamble, the preamble including preamble puncturing information; a transceiver unit configured to transmit the preamble puncturing information on a first content channel, wherein a total bandwidth of the first content channel is smaller than a bandwidth of the PPDU; Device. Aspect 8 1. A puncturing information indicating device, the device comprising: a transceiver unit configured to receive preamble puncturing information on a first content channel, the preamble puncturing information being included in a preamble of a PHY protocol data unit (PPDU), and a total bandwidth of the first content channel being smaller than a bandwidth of the PPDU; and a processing unit configured to determine a channel usage status of the PPDU based on the preamble puncturing information. Device. Aspect 9 9. The apparatus of claim 7 or 8, wherein the preamble further includes location indicating information, the location indicating information indicating a frequency domain location of the first content channel. Aspect 10 10. The apparatus of aspect 9, wherein the position indication information is located in a universal (universal SIG, U-SIG) field, and the preamble puncturing information is located in a field after the U-SIG field. Aspect 11 11. The apparatus of any one of aspects 7 to 10, wherein the first content channel includes odd-numbered subchannels, the first content channel includes even-numbered subchannels, or the first content channel includes specified subchannels, and the bandwidth of the subchannels is a fixed value. Aspect 12 If the first content channel includes a subchannel corresponding to a secondary 40 MHz bandwidth, the bandwidth of the PPDU is 80 MHz; If the first content channel includes a subchannel corresponding to a second secondary 80 MHz bandwidth, the bandwidth of the PPDU is 160 MHz; If the first content channel includes a third subchannel corresponding to an 80 MHz bandwidth, the bandwidth of the PPDU is 240 MHz; If the first content channel includes a subchannel corresponding to a secondary 160 MHz bandwidth, the bandwidth of the PPDU is 320 MHz; 12. The apparatus of any one of embodiments 7 to 11. Aspect 13 1. A method for indicating puncturing information, the method comprising: generating a physical layer protocol data unit (PPDU) including a preamble, the preamble including a universal (universal-SIG, U-SIG) field, the universal field including mode indication information and corresponding indication information, the mode indication information indicating various modes, and the corresponding indication information indicating preamble puncturing information corresponding to the mode indicated by the mode indication information; and transmitting the PPDU. method. Aspect 14 1. A method for indicating puncturing information, the method comprising: receiving preamble puncturing information, the preamble puncturing information being included in a preamble of a PHY protocol data unit (PPDU), the preamble including a universal (universal-SIG, U-SIG) field, the universal field including mode indication information and corresponding indication information, the mode indication information indicating various modes, and the corresponding indication information indicating the preamble puncturing information corresponding to the mode indicated by the mode indication information; determining a channel usage status of the PPDU based on the preamble puncturing information; method. Aspect 15 The method of aspect 13 or 14, wherein the mode indication information indicates a fourth mode, the corresponding indication information indicates preamble puncturing information corresponding to the fourth mode, the preamble puncturing information being a bitmap indicating whether a subchannel is punctured, and the bandwidth of the subchannel is 80 MHz. Aspect 16 The method of aspect 13 or 14, wherein the mode indication information indicates a fifth mode, the corresponding indication information indicates preamble puncturing information corresponding to the fifth mode, and the preamble puncturing information is an index indicating whether a subchannel is punctured. Aspect 17 The universal field further includes a bandwidth subfield, wherein the bandwidth subfield indicates that the bandwidth of the PPDU is: 20MHz, 40MHz, 80MHz, 160MHz, or 320MHz 17. The method of any one of embodiments 13 to 16, wherein: Aspect 18 the mode indication information and the corresponding indication information are located in the same subfield in the U-SIG; or the mode indication information and the corresponding indication information are located in different subfields in the U-SIG; 17. The method of any one of embodiments 13 to 16. Aspect 19 19. A puncturing information indication apparatus, the apparatus configured to perform the method according to any one of aspects 13 to 18. Aspect 20 A puncturing information indicating apparatus, the apparatus comprising: a processor; and a memory communicatively coupled to the processor; the memory configured to store computer instructions; The processor is configured to execute the computer instructions to perform the method of any one of aspects 1 to 6 and 13 to 18. Puncturing information indicator. Aspect 21 A puncturing information indication device, the device having a processing circuit and an interface circuit, the interface circuit configured to read code instructions, and the processing circuit configured to execute the code instructions to perform the method of any one of aspects 1 to 6 and 13 to 18. Aspect 22 19. A computer-readable storage medium configured to store a computer program used to perform the method of any one of aspects 1 to 6 and 13 to 18. Aspect 23 19. A computer program comprising instructions used to carry out the method according to any one of aspects 1 to 6 and 13 to 18.

Claims

1. 1. A method for indicating puncturing information, the method comprising: receiving a physical layer protocol data unit (PPDU) including a preamble, the preamble including position indication information and preamble puncturing information, the position indication information indicating a frequency domain position of a first content channel, the position indication information being located in a universal signaling indicator (U-SIG) field, and the preamble puncturing information being located in an extremely high throughput signaling field (EHT-SIG) field after the U-SIG field; the preamble puncturing information is carried on the first content channel, and a bandwidth of the first content channel is smaller than a bandwidth of the PPDU; determining the preamble puncturing state based on the location information and the preamble puncturing information; A method comprising:

2. The method of claim 1 , wherein the preamble puncturing information includes a bitmap indicating whether subchannels in a bandwidth of the PPDU are punctured.

3. The method of claim 1 , wherein the first content channel is distributed over one or more subchannels of the bandwidth of the PPDU.

4. The method of claim 1 , wherein the subchannel has a bandwidth of 20 MHz.

5. 2. The method of claim 1, wherein the bandwidth of the PPDU is 80 MHz, 160 MHz, 240 MHz, or 320 MHz.

6. at least one processor; a memory coupled to the at least one processor and storing program instructions for execution by the at least one processor; 10. An apparatus having: receiving a physical layer protocol data unit (PPDU) including a preamble, the preamble including position indication information and preamble puncturing information, the position indication information indicating a frequency domain position of a first content channel, the position indication information being located in a universal signaling indicator (U-SIG) field, and the preamble puncturing information being located in an extremely high throughput signaling field (EHT-SIG) field after the U-SIG field; the preamble puncturing information is carried on the first content channel, and a bandwidth of the first content channel is smaller than a bandwidth of the PPDU; determining the preamble puncturing state based on the location information and the preamble puncturing information; An apparatus that enables the

7. The apparatus of claim 6 , wherein the preamble puncturing information includes a bitmap indicating whether subchannels in a bandwidth of the PPDU are punctured.

8. The apparatus of claim 6 , wherein the first content channel is distributed over one or more subchannels of the bandwidth of the PPDU.

9. The apparatus of claim 6, wherein the bandwidth of the subchannel is 20 MHz.

10. The apparatus of claim 6 , wherein the bandwidth of the PPDU is 80 MHz, 160 MHz, 240 MHz, or 320 MHz.

11. A puncturing information indication apparatus, the apparatus having a processor and a memory communicatively coupled to the processor; the memory is configured to store computer instructions; The processor is configured to execute the computer instructions to perform the method of any one of claims 1 to 5. Device.

12. 6. A puncturing information indication device, the device comprising a processing circuit and an interface circuit, the interface circuit being configured to read code instructions, and the processing circuit being configured to execute the code instructions to perform the method of any one of claims 1 to 5. Device.

13. A computer-readable storage medium configured to store computer-executable instructions executable to perform the method of any one of claims 1 to 5.

14. A computer program comprising executable instructions to carry out the method of any one of claims 1 to 5.

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