Communication method and apparatus

Abstract

A communication method and apparatus. The present application supports an IEEE protocol, such as an IEEE 802.11be / Wi-Fi 7 / EHT protocol, an IEEE 802.11bn / UHR / Wi-Fi 8 protocol, an IEEE 802.15 / UWB protocol, and an IEEE 802.11bf / sensing protocol. The present application provides a sub-carrier plan, and the communication apparatus can use the sub-carrier plan to perform communication or data transmission. Among M×26 sub-carriers, respective sub-carriers of a first DRU and a second DRU among M 26-tone DRUs can appear sequentially and cyclically at different granularities. That is to say, among the M×26 sub-carriers, the number of sub-carriers spaced between two adjacent sub-carriers in the first DRU and the number of sub-carriers spaced between two adjacent sub-carriers in the second DRU are different. The method can effectively improve the transmit power of the communication apparatus.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application with application number 202410055297.5 filed with the State Intellectual Property Office of China on January 12, 2024, and priority to the Chinese patent application with the invention name “Communication Method and Device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0003] In recent years, a communications commission has issued regulations regarding the 6 GHz spectrum, defining a low-power indoor (LPI) communication method with limits on maximum transmit power and maximum frequency spectral density. For access points (APs), the maximum transmit power is 36 decibel-milliwatts (dBm), with a maximum power spectral density of 5 dBm per megahertz (MHz). For stations (STAs), the maximum transmit power is 24 dBm, with a maximum power spectral density of -1 dBm per MHz.

[0004] As can be seen from the above, the power transmitted by the device is limited by both the maximum transmit power and the maximum power spectral density. That is, the power transmitted by the device cannot exceed the maximum transmit power or the maximum power spectral density (that is, the transmit power per MHz cannot exceed a given value).

[0005] Therefore, under the limitation of maximum power spectrum density, how to increase the transmission power of the device to obtain higher gain has become an urgent problem to be solved. Summary of the Invention

[0006] The embodiments of the present application provide a communication method and apparatus that can effectively increase the transmission power of a device.

[0007] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a first communication device, where the first communication device is a Wi-Fi device, or a chip or functional module that can be placed in a Wi-Fi device. The method includes:

[0008] Transmit a physical layer (PHY) protocol data unit (PPDU) on a first bandwidth. The subcarrier plan corresponding to the first bandwidth includes M distributed resource units (DRUs), each DRU includes 26 subcarriers, and M is a positive integer. The subcarrier plan satisfies the following: For M1 DRUs among the M DRUs, some or all of the subcarriers in these M1 DRUs belong to a first DRU every x subcarriers among the subcarriers corresponding to the M1 DRUs. The first DRU is one of the M1 DRUs, and the first DRU includes multiple subcarriers with non - consecutive index values, where x < M1. For M2 DRUs among the M DRUs, some subcarriers in these M2 DRUs belong to a second DRU every y subcarriers among the subcarriers corresponding to the M DRUs. The second DRU is one of the M2 DRUs, and the index values among the said some subcarriers in the second DRU are non - consecutive. The DRUs in the M1 DRUs and the DRUs in the M2 DRUs do not overlap with each other. M1 and M2 are both positive integers, and x + M2 < y.

[0009] In the embodiments of the present application, by satisfying the above conditions in the subcarrier plan, as many subcarriers belonging to the second DRU as possible can be located within a certain 1 MHz or some 1 MHz, so that the number of subcarriers belonging to the first DRU within this 1 MHz or some 1 MHz is as small as possible. When the number of subcarriers belonging to the first DRU within a certain or some 1 MHz is small and under the condition of limited maximum power spectral density, it means that more power can be allocated to the subcarriers belonging to the first DRU, thereby increasing the transmission power of the subcarriers belonging to the first DRU within this certain or some 1 MHz. Exemplarily, one or more subcarriers belonging to the first DRU within a certain or some 1 MHz with increased transmission power can be used as pilot subcarriers, thereby increasing the pilot energy, so that when the second communication device processes the pilot signal, the accuracy of correcting frequency offset or phase offset of the second communication device can be improved, and the demodulation accuracy can be enhanced.

[0010] In the embodiments of the present application, when the subcarrier plan satisfies the above conditions, it can also make the subcarriers belonging to the second DRU or other subcarriers be distributed near the DC subcarrier or the guard subcarrier, so as to avoid interference to the target subcarriers by the DC component or the temporary channel as much as possible.

[0011] Generally speaking, in the embodiments of the present application, the first DRU and the second DRU appear cyclically in sequence at different granularities (or frequencies) among M * 26 subcarriers, belonging to their respective subcarriers. For example, among the M * 26 subcarriers, the frequency at which the subcarriers belonging to the first DRU appear is different from the frequency at which the subcarriers belonging to the second DRU appear. Or rather, among the M * 26 subcarriers, the frequency at which the subcarriers belonging to the first DRU appear is different from the frequency at which the subcarriers belonging to the second DRU appear. Or rather, among the M * 26 subcarriers, the number of subcarriers between two adjacent subcarriers in the first DRU (such as between two adjacent subcarriers in some or all of the subcarriers in the first DRU) is different from the number of subcarriers between two adjacent subcarriers in the second DRU (such as between two adjacent subcarriers in some of the subcarriers in the second DRU). Exemplarily, M1 + M2 = M.

[0012] Generally speaking, for M DRUs, some 26-tone RUs can be used as degraded DRUs (such as the second DRU above), and the degraded DRU or some empty subcarriers, DC subcarriers or guard subcarriers, or those subcarriers composed of non-26-tone DRUs in some DRUs are filled around the target subcarriers. The target subcarrier is the non-degraded DRU among the M DRUs, such as the first DRU shown above.

[0013] In a second aspect, an embodiment of the present application provides a communication method, which is applied to a second communication device. The second communication device is a Wi-Fi device, or a chip or functional module that can be placed in a Wi-Fi device, etc. The method includes:

[0014] Receiving a PPDU on a first bandwidth and parsing the PPDU; the subcarrier plan corresponding to the first bandwidth includes M distributed resource units (DRUs), each DRU includes 26 subcarriers, and M is a positive integer; the subcarrier plan satisfies: among the M1 DRUs in the M DRUs, some or all of the subcarriers belong to the first DRU every x subcarriers among the subcarriers corresponding to the M1 DRUs. The first DRU is one of the M1 DRUs, and the first DRU includes a plurality of subcarriers with non-consecutive index values, x < M1; among the M2 DRUs in the M DRUs, some of the subcarriers belong to the second DRU every y subcarriers among the subcarriers corresponding to the M DRUs. The second DRU is one of the M2 DRUs, and the index values between the some subcarriers in the second DRU are non-consecutive. The DRUs in the M1 DRUs and the DRUs in the M2 DRUs do not overlap, and M1 and M2 are both positive integers, and x + M2 < y.

[0015] In combination with the first aspect or the second aspect, in a possible implementation, when the first bandwidth is 20 MHz, y is an integer greater than 8; or, when the first bandwidth is 40 MHz, y is an integer greater than 18.

[0016] In the embodiment of the present application, when the first bandwidth is 20 MHz, M1=8, M2=1, for example, the M2 DRUs may be 26-tone DRU 5. When the first bandwidth is 40 MHz, M1=16, M2=2, for example, the M2 DRUs may be 26-tone DRU 5 or 26-tone DRU 14.

[0017] In combination with the first aspect or the second aspect, in a possible implementation, when M1=8, x=7, y=12, or y=10; or, when M1=16, x=15, y=25.

[0018] In the embodiment of the present application, y=10, y=12, and y=25 are only examples. For example, when the first bandwidth is 20 MHz, M1=8, and y may also be 9 or 11. For another example, when the first bandwidth is 40 MHz, M1=16, and y may also be 19, 20, 21, 22, 23, or 24.

[0019] In combination with the first aspect or the second aspect, in one possible implementation, the number of subcarriers belonging to the second DRU in the first unit window is greater than the number of subcarriers belonging to the second DRU in the second unit window, and the first unit window and the second unit window both include n subcarriers with consecutive index values. The lowest frequency subcarrier in the first unit window is different from the lowest frequency subcarrier in the second unit window, and the highest frequency subcarrier in the first unit window is different from the highest frequency subcarrier in the second unit window.

[0020] In an embodiment of the present application, the first unit window and the second unit window are different sliding windows including n consecutive subcarriers, respectively. In the different sliding windows of M*26 subcarriers corresponding to the first bandwidth, there may be some sliding windows such as the first unit window in which the number of subcarriers belonging to the second DRU is greater than the number of subcarriers belonging to the second DRU in other sliding windows such as the second unit window. Since the total number of subcarriers in the first unit window is the same as the total number of subcarriers in the second unit window, and the number of subcarriers belonging to the second DRU in the first unit window is greater than the number of subcarriers belonging to the second DRU in the second unit window, the number of subcarriers belonging to the first DRU in the first unit window will be correspondingly smaller than the number of subcarriers belonging to the first DRU in the second unit window. By reducing the number of subcarriers of the first DRU, the transmission power of the subcarriers of the first DRU can be increased.

[0021] In combination with the first aspect or the second aspect, in a possible implementation, n=13.

[0022] When the subcarrier spacing is 78.125 kHz, 13 * 78.125 kHz = 1015.625 kHz ≈ 1 MHz. Therefore, using 13 subcarriers as a sliding window corresponds to the number of subcarriers within 1 MHz. This can also be effectively combined with the maximum power spectral density condition, such as the power spectral density unit being 1 MHz, allowing for a simple and quick determination of the subcarrier's transmit power.

[0023] In combination with the first aspect or the second aspect, in a possible implementation manner, there are multiple subcarriers in the subcarriers belonging to the second DRU in the first unit window that are continuous.

[0024] In combination with the first aspect or the second aspect, in a possible implementation, among the remaining subcarriers in the M2 DRUs except for the part of subcarriers, there are multiple subcarriers belonging to the second DRU that are continuous.

[0025] In combination with the first aspect or the second aspect, in a possible implementation, some of the subcarriers in the remaining subcarriers of the M2 DRUs except the part of the subcarriers, in the subcarriers corresponding to the M DRUs, every z subcarriers in the order from low frequency to high frequency belong to the second DRU, z <y。

[0026] In combination with the first aspect or the second aspect, in a possible implementation, for some of the subcarriers in the M2 DRUs, the maximum number of subcarriers between two adjacent non-target subcarriers in the subcarriers corresponding to the M DRUs may be 12. For example, the non-target subcarriers may include some of the subcarriers in the M2 DRUs.

[0027] In this embodiment of the present application, the positions of the remaining subcarriers in the M2 DRUs, excluding the aforementioned subcarriers, may be determined by the positions or number of subcarriers belonging to the M1 DRUs within a 1 MHz or multiple 1 MHz bands for which transmit power needs to be increased. This embodiment of the present application does not limit the specific distribution of the remaining subcarriers.

[0028] In an embodiment of the present application, the remaining subcarriers, null subcarriers, direct current (DC) subcarriers or protection subcarriers in the M2 DRUs other than the above-mentioned subcarriers can be distributed around the subcarriers of the M1 DRUs. The positions of the above-mentioned remaining subcarriers, null subcarriers, direct current (DC) subcarriers or protection subcarriers can be determined by the positions or numbers of subcarriers belonging to the M1 DRUs within a certain 1MHz or multiple 1MHz where the transmission power needs to be increased. The above-mentioned remaining subcarriers, null subcarriers, direct current (DC) subcarriers or protection subcarriers can also be referred to as non-target subcarriers. For example, under the maximum power spectrum power limit condition within 1MHz with 13 consecutive subcarriers as a sliding window, the number of non-target subcarriers within a certain 1MHz or certain 1MHz can be increased as much as possible, thereby reducing the number of subcarriers within 1MHz of other 26-tone DRUs, 52-tone DRUs or 106-tone RUs, and increasing the transmission power.

[0029] In combination with the first aspect or the second aspect, in one possible implementation, for the subcarriers in the M1 DRUs and some of the subcarriers in the M2 DRUs, the frequency of occurrence of the some of the subcarriers in the M2 DRUs is less than the frequency of occurrence of the subcarriers in the first DRU.

[0030] In combination with the first aspect or the second aspect, in one possible implementation, the index value of any of the following subcarriers does not overlap with the index value of the subcarrier of the M1 DRUs, and does not overlap with the index value of the partial subcarriers: the index value of the protection subcarrier, the index value of the DC subcarrier, the index value of the empty subcarrier, and the index value of the remaining subcarriers in the M2 DRUs except the partial subcarriers.

[0031] In a third aspect, an embodiment of the present application provides a first communication device configured to execute the method in the first aspect or any possible implementation. The first communication device includes a module configured to execute the method in the first aspect or any possible implementation.

[0032] In a fourth aspect, embodiments of the present application provide a second communication device configured to execute the method in the second aspect or any possible implementation. The second communication device includes a module configured to execute the method in the second aspect or any possible implementation.

[0033] In a fifth aspect, an embodiment of the present application provides a first communication device, comprising a processor configured to execute the method described in the first aspect or any possible implementation. The processor is configured to execute a program stored in a memory, and when the program is executed, the method described in the first aspect or any possible implementation is executed.

[0034] In a possible implementation, the memory is located outside the first communication device.

[0035] In a possible implementation, the memory is located within the first communication device.

[0036] In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together. For example, the first communication device may be a chip.

[0037] In a possible implementation, the first communication device further includes a transceiver, where the transceiver is configured to receive information or send information.

[0038] In a sixth aspect, an embodiment of the present application provides a second communication device, comprising a processor configured to execute the method described in the second aspect or any possible implementation. The processor is configured to execute a program stored in a memory, and when the program is executed, the method described in the second aspect or any possible implementation is executed.

[0039] In a possible implementation, the memory is located outside the second communication device.

[0040] In a possible implementation, the memory is located within the second communication device.

[0041] In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together. Exemplarily, the second communication device may be a chip.

[0042] In a possible implementation, the second communication device further includes a transceiver, where the transceiver is configured to receive information or send information.

[0043] In the seventh aspect, an embodiment of the present application provides a first communication device, which includes a logic circuit and an interface, and the logic circuit and the interface are coupled; the interface is used to input and / or output information, and the logic circuit is used to execute the method described in the first aspect or any possible implementation method.

[0044] In an eighth aspect, an embodiment of the present application provides a second communication device, which includes a logic circuit and an interface, and the logic circuit and the interface are coupled; the interface is used to input and / or output information, and the logic circuit is used to execute the method described in the second aspect or any possible implementation method.

[0045] In the ninth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program. When the computer-readable storage medium is run on a computer, the method shown in any one of the above-mentioned first to second aspects or any possible implementation method is executed.

[0046] In a tenth aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the method shown in any one of the first to second aspects or any possible implementation thereof to be executed.

[0047] In an eleventh aspect, an embodiment of the present application provides a computer program. When the computer program is run on a computer, the method shown in any one of the first to second aspects or any possible implementation is executed.

[0048] In the twelfth aspect, an embodiment of the present application provides a communication system, which includes a first communication device and / or a second communication device, the first communication device is used to execute the method shown in the above-mentioned first aspect or any possible implementation of the first aspect, and the second communication device is used to execute the method shown in the above-mentioned second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0050] FIG2a is a schematic diagram of 20 MHz subcarrier distribution and RU distribution provided in an embodiment of the present application;

[0051] FIG2 b is a schematic diagram of 40 MHz subcarrier distribution and RU distribution provided in an embodiment of the present application;

[0052] FIG2c is a schematic diagram of 80 MHz subcarrier distribution and RU distribution provided in an embodiment of the present application;

[0053] FIG3 is a flow chart of a communication method provided in an embodiment of the present application;

[0054] FIG4a is a flow chart of a communication method provided in an embodiment of the present application;

[0055] FIG4 b is a flow chart of a communication method provided in an embodiment of the present application;

[0056] FIG5a is a schematic diagram of a process of sending a PPDU according to an embodiment of the present application;

[0057] FIG5 b is a schematic diagram of a process of receiving a PPDU provided in an embodiment of the present application;

[0058] FIG6 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0059] FIG7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0060] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] To facilitate understanding of the technical solution of the present application, the present application will be further described below with reference to the accompanying drawings.

[0062] The terms "first" and "second" in the specification, claims, and drawings of this application are used only to distinguish different objects and are not used to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device.

[0063] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It will be understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0064] In this application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. "Or" means that two relationships can exist, such as only A exists, only B exists; when A and B are not mutually exclusive, it can also mean that three relationships exist, such as only A exists, only B exists, and A and B exist at the same time. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0065] In this application, "indication" may include direct indication, indirect indication, explicit indication, and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0066] In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each information agreed in advance (for example, stipulated by the protocol), thereby reducing the indication overhead to a certain extent. In addition, the information to be indicated can be sent together as a whole, or it can be divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different.

[0067] In this application, "sending" and "receiving" indicate the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information is XX, which can include direct sending through the air interface, and also include indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information is YY, which can include direct receiving from YY through the air interface, and also include indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices, or can be carried out within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, trace or interface.

[0068] The embodiments of the present application provide a communication method and apparatus, which can increase the transmit power of a device to obtain a higher gain under the maximum power spectrum density limit.

[0069] The following introduces the system involved in the embodiments of the present application.

[0070] The technical solutions provided in the embodiments of the present application can be applied to wireless local area network (WLAN) systems, such as Wi-Fi, etc. The methods provided in the embodiments of the present application can be applied to the Institute of Electrical and Electronics Engineers IEEE 802.11 series protocols, such as the 802.11be protocol, the 802.11bn protocol (or Wi-Fi 8, also known as ultra-high reliability (UHR) or ultra-high reliability and throughput (UHRT), etc.) or the next generation of the 802.11bn protocol or the protocol that supports ambient power (AMP), etc., which are not listed one by one. The technical solutions provided in the embodiments of the present application can also be applied to wireless personal area networks (WPAN) based on millimeter wave (MMW) and ultra-wideband (UWB) technologies, etc. The method provided in the embodiment of the present application can be applied to the IEEE802.15 series of protocols, such as the 802.15.4a protocol, the 802.15.4z protocol or the 802.15.4ab protocol, or a future generation of UWB WPAN protocol, etc., which are not listed one by one. The technical solution provided in the embodiment of the present application can also be applied to the following communication systems, for example, the Internet of Things (IoT) system, vehicle-to-everything (V2X, X can represent anything), device-to-device (D2D), narrowband Internet of Things (NB-IoT) system, long term evolution (LTE) system, fifth generation (5G) communication system, and new communication systems that will emerge in the future development of communication. For example, the V2X may include: vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P) or vehicle to network (V2N) communication, etc.

[0071] WLAN systems can provide high-speed and low-latency transmission. As WLAN application scenarios continue to evolve, WLAN systems will be applied to more scenarios or industries, such as the Internet of Things industry, the Internet of Vehicles industry, the banking industry, corporate offices, sports stadiums and exhibition halls, concert halls, hotel rooms, dormitories, wards, classrooms, supermarkets, squares, streets, production workshops and warehouses, etc. Of course, devices that support WLAN communication or perception (such as access points or stations) can be sensor nodes in smart cities (such as smart water meters, smart electricity meters, and smart air detection nodes), smart devices in smart homes (such as smart cameras, projectors, displays, TVs, speakers, refrigerators, washing machines, etc.), nodes in the Internet of Things, entertainment terminals (such as wearable devices such as augmented reality (AR) and virtual reality (VR)), smart devices in smart offices (such as printers, projectors, loudspeakers, speakers, etc.), Internet of Vehicles devices, infrastructure in daily life scenarios (such as vending machines, self-service navigation counters in supermarkets, self-service checkout equipment, self-service ordering machines, etc.), and equipment in large sports and music venues.

[0072] Although the embodiments of the present application primarily use WLAN as an example, particularly networks based on the IEEE 802.11 standard, the various aspects of the embodiments of the present application can be extended to other networks based on various standards or protocols, such as Bluetooth, high-performance wireless LAN (HIPERLAN) (a wireless standard similar to the IEEE 802.11 standard), wide area network (WAN), or other networks now known or developed in the future.

[0073] In one possible implementation, the method provided in the embodiment of the present application may be implemented by a communication device in a communication system. For example, the communication device may be an access point (AP) or a station (STA).

[0074] An AP is a device with wireless communication capabilities that supports communication, perception, or energy transmission using WLAN protocols. It has the ability to communicate, perceive, or transmit energy with other devices in a WLAN network (such as non-access point stations (non-AP STAs) or other access points). Of course, it can also have the ability to communicate, perceive, or transmit energy with other devices. Alternatively, an access point is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. In a WLAN system, an access point can be called an access point station (AP STA). The device with wireless communication capabilities can be a complete device, or it can be a chip, processing system, or functional module installed in the complete device. The device in which these chips, processing systems, or functional modules are installed can implement the methods and functions of the embodiments of the present application under the control of the chips, processing systems, or functional modules. The AP in the embodiments of the present application is a device that provides services for non-AP STAs and can support 802.11 series protocols or subsequent protocols. For example, an access point can be an access point for a terminal (such as a mobile phone) to enter a wired (or wireless) network. It is mainly deployed in homes, buildings, and campuses, with a typical coverage radius of tens to hundreds of meters. Of course, it can also be deployed outdoors. For another example, an AP can be a communication entity such as a communication server, router, switch, or bridge; an AP can include various forms of macro base stations, micro base stations, and relay stations. Of course, an AP can also be a chip, processing system, or module in any of the above-mentioned devices, thereby implementing the methods and functions of the embodiments of the present application.

[0075] A STA is a device with wireless communication capabilities that supports communication, sensing, or energy transmission using the WLAN protocol and has the ability to communicate, sense, or transmit energy with other non-AP STAs or access points in the WLAN network. In a WLAN system, a station can be referred to as a non-access point station (non-AP STA). For example, a STA is any user communication device that allows a user to communicate, sense, or transmit energy with an AP and thereby communicate with the WLAN. The device with wireless communication capabilities can be a complete device, or a chip, processing system, or functional module installed in the complete device. Devices equipped with these chips, processing systems, or functional modules can implement the methods and functions of the embodiments of the present application under the control of the chip, processing system, or functional module. For example, a STA can be a wireless communication chip, a wireless sensor, or a wireless communication terminal, and can also be referred to as a user. For another example, a STA can be a mobile phone that supports Wi-Fi communication capabilities, a tablet that supports Wi-Fi communication capabilities, a set-top box that supports Wi-Fi communication capabilities, a smart TV that supports Wi-Fi communication capabilities, a smart wearable device that supports Wi-Fi communication capabilities, an in-vehicle communication device that supports Wi-Fi communication capabilities, and a computer that supports Wi-Fi communication capabilities. Of course, STA can also be a chip, processing system, or module in the various forms of devices mentioned above, so as to implement the methods and functions of the embodiments of the present application.

[0076] Exemplarily, the communication system to which the method provided in the embodiment of the present application can be applied may include access points and stations. For example, the embodiment of the present application may be applicable to scenarios of communication or perception between AP and STA, between AP and AP, or between STA and STA in a WLAN, and the embodiment of the present application is not limited to this. Optionally, the AP may communicate or perceive with a single STA, or the AP may communicate or perceive with multiple STAs at the same time. Specifically, the communication or perception between the AP and multiple STAs can be divided into downlink transmission in which the AP sends signals to multiple STAs at the same time, and uplink transmission in which multiple STAs send signals to the AP. Among them, the WLAN communication protocol can be supported between the AP and the STA, between the AP and the AP, and between the STA and the STA. The communication protocol may include a protocol of the IEEE802.11 series, such as the 802.11bn protocol, and of course, it is also applicable to protocols after 802.11bn.

[0077] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. The communication system may include one or more APs and one or more STAs. Figure 1 shows two access points such as AP1 and AP2, and three stations such as STA1, STA2 and STA3. As an example, the method provided in an embodiment of the present application may be applicable to data communication, perception, or energy transmission between an AP and one or more STAs, such as the communication or perception between AP1 and STA1 shown in Figure 1, and the communication or perception between AP1 and STA1 and STA2 shown in Figure 1. As another example, the method provided in an embodiment of the present application may be applicable to communication between APs, such as the communication or perception between AP1 and AP2 shown in Figure 1. As another example, the method provided in an embodiment of the present application may be applicable to communication or perception between STAs, such as the communication or perception between STA2 and STA3 shown in Figure 1.

[0078] In Figure 1, the STA is a mobile phone and the AP is a router as an example, which does not limit the types of APs and STAs in the embodiments of the present application. At the same time, the number of APs and STAs shown in Figure 1 is only an example. In a specific implementation, the number of APs or STAs can be greater or less, and the embodiments of the present application do not limit this.

[0079] From the perspectives of signal transmission and signal reception, the first communication device described below can be understood as a communication device that transmits signals, and the second communication device can be understood as a communication device that receives signals. Alternatively, the first communication device can be referred to as a transmitter, and the second communication device can be referred to as a receiver.

[0080] From the perspective of different devices, as an example, the first communication device and the second communication device may be Wi-Fi chips, functional modules, or processing systems, etc., provided in different Wi-Fi devices. As another example, the first communication device may be an AP, and the second communication device may be a non-AP STA. As yet another example, the first communication device and the second communication device may both be non-AP STAs or both APs. As yet another example, the first communication device may be a non-AP STA, and the second communication device may be an AP. As yet another example, at least one of the first communication device and the second communication device may be a multi-link device (MLD), etc., which are not listed one by one in the embodiments of this application. Exemplarily, an MLD means that the device simultaneously has multiple stations (such as APs or non-AP STAs), each operating on different frequency bands or channels. A multi-link device includes multiple subordinate stations, which may be physical stations or logical stations. Each station may operate on a link, a frequency band, or a channel, etc. The subordinate stations may be APs or non-AP STAs. A multi-link device (such as a non-AP MLD or an AP MLD) can be a communication device with wireless communication capabilities. The communication device can be a complete device, or it can be a chip, processing system, or module installed in the complete device. Devices installed with these chips, processing systems, or modules can implement the methods and functions of the embodiments of the present application under the control of these chips, processing systems, or modules. The multi-link device can implement wireless communication in accordance with the 802.11 series of protocols, thereby enabling communication with other devices. The other devices shown here may or may not be multi-link devices. The frequency bands in which the multi-link device operates may include, but are not limited to, sub 1 GHz, 2.4 GHz, 5 GHz, 6 GHz, etc., which are not listed here one by one.

[0081] The embodiment of the present application describes the method provided by the embodiment of the present application based on the first communication device and the second communication device. However, during the process of transmitting signals, the first communication device and the second communication device can also forward the signal through other devices, such as forwarding the signal between the first communication device and the second communication device through a forwarding device. The embodiment of the present application does not limit other devices other than the first communication device and the second communication device.

[0082] The following introduces the terms involved in the embodiments of this application.

[0083] 1. Subcarrier planning (toneplan) based on resource unit (RU) definition

[0084] As an example, when the bandwidth is 20 MHz, the entire bandwidth (i.e., 20 MHz) can be composed of a 242-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, and 106-tone RUs. Figure 2a is a schematic diagram of the 20 MHz subcarrier distribution and RU distribution provided in an embodiment of the present application. As shown in Figure 2a, 20 MHz can include 9 26-tone RUs, or 4 52-tone RUs, or 2 106-tone RUs, or 1 242-tone RU.

[0085] 26-tone-RU is an RU including 26 subcarriers, 52-tone RU is an RU including 52 subcarriers, 106-tone RU is an RU including 106 subcarriers, 242-tone RU is an RU including 242 subcarriers, and so on. Each RU may include data subcarriers and pilot subcarriers. For example, the data subcarrier can be used to carry data information, and the pilot subcarrier can be used for estimating phase deviation and / or frequency deviation, etc. In addition to RU, the above-mentioned 20MHz bandwidth may also include at least one of the following: one or more guard subcarriers, one or more null subcarriers, and one or more direct current (DC) subcarriers. For the subcarrier range included in each RU, please refer to the relevant standards or protocols, which will not be described in detail here. The description of RU or subcarrier here also applies to the other bandwidths shown below, which will not be repeated here. The description of subcarrier here also applies to the description of DRU below, which will not be described in detail below.

[0086] As another example, when the bandwidth is 40 MHz, the entire bandwidth (i.e., 40 MHz) can consist of a single 484-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, 106-tone RUs, and 242-tone RUs. The entire bandwidth is roughly equivalent to a replication of the 20 MHz subcarrier plan. As shown in Figure 2b, 40 MHz can include 18 26-tone RUs, or 8 52-tone RUs, or 4 106-tone RUs, or 2 242-tone RUs, or 1 484-tone RU.

[0087] As another example, when the bandwidth is 80 MHz, the entire bandwidth (i.e., 80 MHz) can consist of a full 996-tone RU, or various combinations of 26-tone RUs, 52-tone RUs, 106-tone RUs, 242-tone RUs, and 484-tone RUs. As shown in Figure 2c, 80 MHz can include 36 26-tone RUs, 16 52-tone RUs, 8 106-tone RUs, 4 242-tone RUs, 2 484-tone RUs, or 1 996-tone RU. 484L and 484R represent the left and right halves of a 484-tone RU, respectively containing 242 subcarriers, and are another representation of 484+5DC. For example, if the subcarrier range of a 484-tone RU is [-500:-12], "484L" is the low-frequency portion relative to the frequency center of the 484-tone RU, that is, [-500:-259], and "484R" is the high-frequency portion relative to the frequency center of the 484-tone RU, that is, [-253:-12]. Similarly, if the subcarrier range of a 484-tone RU is [12:500], "484L" is [12:253], and "484R" is [259:500]. These are not listed here.

[0088] As another example, when the bandwidth is 160 MHz, the entire bandwidth can be viewed as a replication of two 80 MHz subcarrier distributions. For example, the entire bandwidth can consist of a 2*996-tone RU, or various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, and 996-tone RU. When the bandwidth is 320 MHz, the entire bandwidth can be viewed as a replication of four 80 MHz subcarrier distributions. These examples are not listed here.

[0089] In the above subcarrier planning, with 242-tone RU (i.e. 20MHz) as the unit, the leftmost of Figure 2a to Figure 2c can be the lowest frequency, and the rightmost of Figure 2a to Figure 2c can be the highest frequency. From left to right, the 242-tone RU can be numbered: the first (1st), the second (2 nd ),…, the sixteenth (16 thTaking a 320MHz bandwidth as an example, the data field in a radio frame can occupy up to 16 242-tone RUs. That is, in the data field, there can be a maximum of 16 242-tone RUs corresponding to 16 20MHz channels in ascending frequency order.

[0090] Generally speaking, a STA can be allocated multiple RUs, meaning that multiple RUs can be combined and allocated to a single STA. Therefore, the 802.11be standard supports multiple resource units (MRUs). In other words, in addition to the types of RUs mentioned above, the 802.11be standard also includes several MRUs. For example, a 52-tone RU and a 26-tone RU form a 52+26-tone MRU. Another example is a 106-tone RU and a 26-tone RU form a 106+26-tone MRU. Another example is a 996-tone RU and a 484-tone RU form a 996+484-tone MRU. Another example is two 996-tone RUs and a 484-tone RU form a 2*996+484-tone MRU. Another example is three 996-tone RUs form a 3*996-tone MRU. For another example, three 996-tone RUs and one 484-tone RU form a 3*996+484-tone MRU. The symbol "*" in this application means "multiply" or "multiply by".

[0091] At the bandwidth level, when the subcarrier spacing is 78.125 kHz, a 26-tone RU corresponds to approximately 2 MHz (i.e., 26 * 78.125 kHz = 2031.25 kHz ≈ 2 MHz), a 52-tone RU corresponds to approximately 4 MHz, a 106-tone RU corresponds to approximately 8 MHz, and a 242-tone RU corresponds to approximately 20 MHz. The sizes of other RUs can be inferred by adding or multiplying them accordingly, and are not detailed here.

[0092] The above RU can be called a regular RU. This regular RU has a smaller bandwidth and lower transmit power than a distributed RU. The "lower" shown here is relative to the distributed RU. For example, the transmit power of a distributed RU can be further increased compared to a regular RU.

[0093] 2. Maximum power and maximum power spectral density

[0094] Table 1 illustrates the maximum power of an AP or STA at different transmission bandwidths. For an AP, the maximum power spectral density can be 5dBm / MHz, for example. For a STA, the maximum power spectral density can be -1dBm / MHz, for example. Table 1 and the maximum power spectral density shown here are examples only. As standards evolve, the maximum power or maximum power spectral density may also be updated, and this is not limited in the present embodiment.

[0095] Table 1

[0096] The maximum power spectral density (MPSD) refers to the maximum transmit power in 1MHz. In other words, the MSD is limited to x dBm (dBm = 10log (mW), where lg represents the logarithm to the base 10). The minimum granularity of the MSD is 1MHz. For example, for a 20MHz band, 18dBm – 5dBm = 13dB, and 13dB = 10dBm. 1.3 ≈20. Therefore, for an AP, the maximum power within a certain transmission bandwidth can be approximately equal to the value when the maximum power is reached in each MHz.

[0097] When the power spectrum density is limited, the transmit power of the device can be increased by widening the transmit bandwidth. From the perspective of subcarriers, the subcarriers allocated to a certain device can be made discrete in the frequency domain to achieve the purpose of increasing the transmit power. In this case, although the subcarriers allocated to the device are not increased, the total power can be increased due to the increase in the transmit bandwidth. The total power increases because the number of subcarriers per MHz decreases, so from the perspective of the subcarriers, a greater transmit power can be obtained. For example, when 1MHz corresponds to 13 consecutive subcarriers, according to the power spectrum density limit, the transmit power of each subcarrier can be w / 13. When these 13 subcarriers become discrete, such as when 1MHz corresponds to 5 subcarriers, the transmit power of each subcarrier can be w / 5. w can represent the transmit power per MHz, and the unit can be mW.

[0098] Therefore, without changing the transmit power at 1 MHz, that is, when the power spectral density is limited, the transmit power of the subcarriers can be increased by discretizing the subcarriers of the RU. Subsequently, discrete RUs, or distributed resource units (DRUs), have been proposed to increase transmit power.

[0099] 3.DRU

[0100] The DRU includes multiple subcarriers that are discrete in the frequency domain, or multiple subcarriers with discrete index values, or multiple subcarriers with non-continuous index values. The multiple discrete subcarriers may be partially discrete or completely discrete. For example, the multiple discrete subcarriers may include a part of subcarriers that are continuous in frequency, and a part of subcarriers that are discontinuous in frequency. For another example, the multiple discrete subcarriers may also be completely discontinuous in frequency. The "continuous in frequency" shown above may also be referred to as the subcarrier index values ​​being continuous, and "discontinuous in frequency" may also be referred to as the subcarrier index values ​​being discontinuous.

[0101] For DRU and continuous RU containing the same number of subcarriers, the bandwidth spanned by the DRU from the low-frequency starting position to the high-frequency ending position in the frequency domain is greater than the bandwidth occupied by the continuous RU. In this way, under the same maximum power spectrum density, the total transmit power of the DRU is greater than the total transmit power of the continuous RU. In other words, when the power spectrum density is limited, the transmit power can be increased by discretizing a limited number of subcarriers (such as the 26 subcarriers contained in the continuous 26-tone RU) to a wider bandwidth, that is, more subcarriers (such as the odd subcarriers of 2 continuous 26-tone RUs). Therefore, compared with continuous RU, when using discrete RU for data transmission, the transmit power on a single subcarrier can be increased, thereby improving the signal-to-noise ratio (SNR).

[0102] Taking the 78.125 kHz subcarrier spacing used by both the 802.11be and 802.11bn standards as an example, 1 MHz / 0.078125 MHz = 12.8, meaning that each 1 MHz range can include 13 subcarrier positions specified in the standard (or 13 consecutive subcarriers or 13 consecutive subcarrier indices). For details about the subcarriers included in each DRU, please refer to the following text and are not listed here one by one.

[0103] For example, taking the subcarrier spacing of 78.125KHz as an example, 20MHz can include 256 subcarriers, and 40MHz can include 512 subcarriers. For example, the index of these 256 subcarriers can range from -128 to +127, which can be recorded as [-128:+127]. The index of these 512 subcarriers can range from -256 to +255, which can be recorded as [-256:+255]. 80MHz can include 1024 subcarriers. For example, the index of these 1024 subcarriers can range from -512 to +511, which can be recorded as [-512:+511]. The number of subcarriers and subcarrier indexes for 160MHz and the number of subcarriers and subcarrier indexes for 320MHz are not listed here one by one.

[0104] Table 2 exemplifies the relationship between the numbers of different DRUs when the bandwidth is 20MHz. Table 3 exemplifies the relationship between the numbers of different DRUs when the bandwidth is 40MHz. In order to distinguish different numbers, in Table 2 or Table 3, "x1", "x2", ... "x18" are used as examples to distinguish different 26-tone DRUs, "y1", "y2", etc. are used as examples to distinguish different 52-tone DRUs, "z1", "z2", etc. are used as examples to distinguish different 106-tone DRUs, and "t1", "t2" are used as examples to distinguish different 242-tone DRUs. For ease of description, the following will be explained using x1=1, x2=2, ..., x18=18 as an example, y1=1, y2=2, ..., y8=8 as an example, z1=1, z2=2, z3=3, z4=4 as an example, and t1=1, t2=2 as an example, and they will not be listed one by one here.

[0105] Table 2

[0106] Table 3

[0107] The additional subcarriers shown in Table 2 and Table 3 may be referred to as subcarriers of a non-26-tone DRU within a DRU.

[0108] When the bandwidth is 80 MHz, 160 MHz, or 320 MHz, different DRUs may also have relationships as shown in Table 2 or Table 3, which are not listed here one by one. For example, the relationships between different DRUs can refer to the relationships in conventional RUs.

[0109] As can be seen from Table 2 or Table 3, all DRUs with more than 26 subcarriers can establish a relationship with the 26-tone DRU based on the 26-tone DRU. Therefore, the following uses the 26-tone DRU as an example to illustrate the subcarrier planning shown in the embodiment of the present application.

[0110] In the embodiment of the present application, taking a 26-tone DRU as an example, the M DRUs corresponding to the first bandwidth can also be divided into a first DRU and a second DRU. The first DRU and the second DRU can both include multiple subcarriers, and the total number of subcarriers included in the first DRU and the second DRU is the same. The difference is that the multiple subcarriers included in the first DRU are completely discrete, while some of the multiple subcarriers included in the second DRU are continuous and others are non-continuous.

[0111] Exemplarily, the total number of subcarriers in the first DRU is 26, and the index values ​​of any two adjacent subcarriers among these 26 subcarriers are non-continuous. Exemplarily, the total number of subcarriers in the second DRU can be 26, some of these 26 subcarriers can be non-continuous, and some of these 26 subcarriers can be continuous. For example, 5 subcarriers with index values ​​of -2, -1, 0, 1, 1 can be considered as continuous subcarriers. For another example, 2 subcarriers with index values ​​of 0, 1 can also be considered as continuous subcarriers. For another example, 3 subcarriers with index values ​​of -2, 0, 2 can be considered as non-continuous subcarriers. For another example, 2 subcarriers with index values ​​of -2, 0 can also be considered as non-continuous subcarriers.

[0112] For example, as shown in Table 2, 26-tone DRU 5 does not participate in the composition of any 52-tone DRU, nor does it participate in the composition of any 106-tone DRU. As shown in Table 3, 26-tone DRU 5 and 26-tone DRU 14 do not participate in the composition of any 52-tone DRU, nor do they participate in the composition of any 106-tone DRU, nor do they participate in the composition of any 242-tone DRU. Therefore, the second DRU can also be a DRU that does not participate in the composition of 52-tone DRU, 106-tone DRU, or 242-tone DRU. The above-mentioned DRUs are usually not allocated to users in the vast majority of allocation schemes in subcarrier planning (tone plan), so they can be selected as the second DRU to increase the transmission power.

[0113] As an example, when the bandwidth is 20 MHz, the first DRU can be any of the following 26-tone DRUs: 26-tone DRU 1, 26-tone DRU 2, 26-tone DRU 3, 26-tone DRU 4, 26-tone DRU 6, 26-tone DRU 7, 26-tone DRU 8, or 26-tone DRU 9. The second DRU can be 26-tone DRU 5. That is, the second DRU is the 26-tone DRU in the middle of the 20 MHz bandwidth.

[0114] As another example, when the bandwidth is 40 MHz, the first DRU can be any of the following 26-tone DRUs: 26-tone DRU 1, 26-tone DRU 2, 26-tone DRU 3, 26-tone DRU 4, 26-tone DRU 6, 26-tone DRU 7, 26-tone DRU 8, 26-tone DRU 9, 26-tone DRU 10, 26-tone DRU 11, 26-tone DRU 12, 26-tone DRU 13, 26-tone DRU 15, 26-tone DRU 16, 26-tone DRU 17, or 26-tone DRU 18. The second DRU can be 26-tone DRU 5 or 26-tone DRU 14. That is, the second DRU is the 26-tone DRU in the middle of the first 20 MHz of the 40 MHz and the 26-tone DRU in the middle of the last 20 MHz of the 40 MHz.

[0115] As another example, when the bandwidth is 80 MHz, the first DRU may be any one of the following 26-tone DRUs: 26-tone DRU 1, 26-tone DRU 2, 26-tone DRU 3, 26-tone DRU 4, 26-tone DRU 6, 26-tone DRU 7, 26-tone DRU 8, 26-tone DRU 9, 26-tone DRU 10, 26-tone DRU 11, 26-tone DRU 12, 26-tone DRU 13, 26-tone DRU 15, 26-tone DRU 16, 26-tone DRU 17, 26-tone DRU 18, 26-tone DRU 20, 26-tone DRU 21, 26-tone DRU 22, 26-tone DRU 23, 26-tone DRU 25, 26-tone DRU 26, 26-tone DRU 26-tone DRU 27, 26-tone DRU 28, 26-tone DRU 29, 26-tone DRU 30, 26-tone DRU 31, 26-tone DRU 32, 26-tone DRU 34, 26-tone DRU 35, 26-tone DRU 36, or 26-tone DRU 37. The second DRU can be any of the following 26-tone DRUs: 26-tone DRU 5, 26-tone DRU 14, 26-tone DRU 24, or 26-tone DRU 33. That is, the second DRU can be the 26-tone DRU located in the middle of each of the four 20 MHz channels.

[0116] The description of the first DRU or the second DRU can also be extended to 160MHz or 320MHz, which are not listed here. Regardless of the bandwidth, the second DRU can be the 26-tone DRU in the middle of each 20MHz. In the embodiment of the present application, the second DRU can also be called a lowered DRU.

[0117] It is understandable that there can be an undefined 26-tone DRU in 80MHz, such as 26-tone DRU 19. An undefined 26-tone DRU can be understood as a DRU that is numbered, but the subcarriers in the DRU can be considered to be non-existent. For ease of understanding, taking the conventional DRU shown in Figure 2c as an example, as shown in Figure 2c, the DRU in the middle of 80MHz does not include subcarriers. Similarly, when the bandwidth is 160MHz, there are two undefined 26-tone DRUs in 160MHz, such as 26-tone DRU 19 or 26-tone DRU 56. That is, the 26-tone DRU in the middle of the first 80MHz in 160MHz, and the 26-tone DRU in the middle of the 80MHz after the 160MHz. Similarly, when the bandwidth is 320 MHz, since 320 MHz can be divided into four 80 MHz bands, 320 MHz can have four undefined 26-tone DRUs, such as 26-tone DRU 19, 26-tone DRU 56, 26-tone DRU 93, or 26-tone DRU 130. The number of undefined DRUs shown above will affect the numbering of the M DRUs. For example, when the bandwidth is 80 MHz, although M = 36, the maximum number of these 36 DRUs is 37. The M DRUs shown in the embodiment of the present application do not include undefined DRUs, but the numbering of the M DRUs will be affected by the undefined DRUs.

[0118] Generally speaking, a 26-tone DRU can correspond to 2 MHz (taking a subcarrier spacing of 78.125 kHz as an example), so as the bandwidth increases, the first DRU or the second DRU can be updated accordingly, which will not be listed here one by one.

[0119] The following introduces the subcarrier planning (toneplan) involved in the embodiments of the present application.

[0120] In the embodiment of the present application, the subcarrier planning under larger DRU sizes corresponding to different bandwidths can refer to the description of the conventional RU, or Table 2 and Table 3. The following is illustrated using a 26-tone DRU as an example, but as shown in Table 2 or Table 3, the DRU size can also be a 52-tone DRU, a 106-tone DRU, a 242-tone DRU, a 484-tone DRU, or a 2*996-tone DRU, etc. The subcarrier planning under different DRU sizes will not be illustrated one by one below.

[0121] In an embodiment of the present application, the bandwidth used to transmit the PPDU may be a first bandwidth, and the subcarrier planning corresponding to the first bandwidth may include M 26-tone DRUs. For example, when the first bandwidth is 20 MHz, M = 9. For another example, when the first bandwidth is 40 MHz, M = 18. For another example, when the first bandwidth is 80 MHz, M = 36. The relationship between the first bandwidth and M is not listed here one by one. As shown above, a 26-tone RU may correspond to 2 MHz, and in addition to M 26-tone RUs, the first bandwidth may also include protection subcarriers, DC subcarriers or empty subcarriers, etc., so the value of the first bandwidth will be greater than M*2 MHz.

[0122] The M 26-tone DRUs can be divided into M1 DRUs and M2 DRUs. The DRUs in the M1 DRUs do not overlap with the DRUs in the M2 DRUs. The subcarrier index value of any DRU in the M1 DRUs is different from the subcarrier index value of any DRU in the M2 DRUs. The first DRU can be any DRU in the M1 DRUs. The second DRU can be any DRU in the M2 DRUs.

[0123] As an example, when the bandwidth is 20 MHz, M1=8, and the eight DRUs may be: 26-toneDRU 1, 26-toneDRU 2, 26-toneDRU 3, 26-toneDRU 4, 26-toneDRU 6, 26-toneDRU 7, 26-toneDRU 8, 26-toneDRU 9. M2=1, and the one DRU is 26-toneDRU 5.

[0124] As another example, when the bandwidth is 40 MHz, M1 = 16, and the 16 DRUs may be: 26-tone DRU 1, 26-tone DRU 2, 26-tone DRU 3, 26-tone DRU 4, 26-tone DRU 6, 26-tone DRU 7, 26-tone DRU 8, 26-tone DRU 9, 26-tone DRU 10, 26-tone DRU 11, 26-tone DRU 12, 26-tone DRU 13, 26-tone DRU 15, 26-tone DRU 16, 26-tone DRU 17, 26-tone DRU 18. M2 = 2, and the two DRUs may be: 26-tone DRU 5 and 26-tone DRU 14.

[0125] As another example, when the bandwidth is 80 MHz, M1=32, and the 32 DRUs may be: 26-tone DRU 1, 26-tone DRU 2, 26-tone DRU 3, 26-tone DRU 4, 26-tone DRU 6, 26-tone DRU 7, 26-tone DRU 8, 26-tone DRU 9, 26-tone DRU 10, 26-tone DRU 11, 26-tone DRU 12, 26-tone DRU 13, 26-tone DRU 15, 26-tone DRU 16, 26-tone DRU 17, 26-tone DRU 18, 26-tone DRU 20, 26-tone DRU 21, 26-tone DRU 22, 26-tone DRU 24, 26-tone DRU 25, 26-tone DRU 26, 26-tone DRU 27, 26-tone DRU 28, 26-tone DRU 29, 26-tone DRU 30, 26-tone DRU 31, 26-tone DRU 32, 26-tone DRU 34, 26-tone DRU 35, 26-tone DRU 36, 26-tone DRU 37. M2=4, these 4 DRUs can be: 26-tone DRU 5, 26-tone DRU 14, 26-tone DRU 24, 26-tone DRU 33.

[0126] The description of M1 DRU and M2 DRU can also be extended to 160MHz or 320MHz, etc., which are not listed here one by one.

[0127] For the description of the M1 DRUs, please refer to the description of the first DRU. For the description of the M2 DRUs, please refer to the description of the second DRU. They are not listed here one by one.

[0128] The M 26-tone DRUs shown in the embodiment of the present application can meet at least one of the following conditions:

[0129] Item 1: For some or all of the subcarriers in the M1 DRUs, every x subcarriers in the M1*26 subcarriers corresponding to the M1 DRUs in order from low frequency to high frequency belong to the first DRU.

[0130] Exemplarily, each x subcarriers in the order of M1*26 subcarriers from low frequency to high frequency can belong to the same DRU. In other words, for the subcarriers in M1 DRUs, the number of subcarriers between any two adjacent subcarriers in the first DRU is x. The "x" shown in the embodiment of the present application is measured in terms of M1 DRUs, such as the number of subcarriers between any two adjacent subcarriers mentioned above, or the subcarriers in every x subcarriers mentioned above all belong to the subcarriers in M1 DRUs. In other words, the measurement standard of x is based on the M1*26 subcarriers corresponding to the M1 DRUs.

[0131] For different bandwidths, the value of x is different. For example, the value of x can be related to the value of M1. x is a positive integer, such as x=M1-1.

[0132] As an example, when the bandwidth is 20MHz, M1 DRUs may include 208 subcarriers (8*26=208). The 26 subcarriers included in each of the M1 DRUs may be completely discrete, and every x subcarriers among the 208 subcarriers belong to a certain DRU (such as the first DRU). For example, 1 is taken as an example to represent the subcarrier belonging to 26-tone DRU 1, 2 is taken as an example to represent the subcarrier belonging to 26-tone DRU 2, and so on. From low frequency to high frequency, the distribution of these 208 subcarriers may be: 1 6 3 8 2 7 4 9 1 6 3 8 2 7 4 9……. That is, every 7 subcarriers belong to the same DRU, x=7. The two "1"s shown here can be understood as two adjacent subcarriers in the 26-tone DRU1. The adjacent subcarriers shown in the embodiment of the present application refer to 2 adjacent subcarriers among the 26 subcarriers of the same DRU. The continuous subcarriers shown in the embodiment of the present application refer to the subcarrier index values ​​being continuous.

[0133] The numbers shown in the embodiments of the present application represent subcarriers belonging to the same DRU, and do not represent the index value of the subcarrier. For example, the number "1" above represents the subcarrier belonging to 26-tone DRU 1. The order of the DRUs shown here is only an example and should not be understood as a limitation on the embodiments of the present application. The description of the numbers and the order of the DRUs also applies below. For ease of description, the distribution order of the subcarriers of M1 DRUs is illustrated below using a sequence as an example. For example, the sequence is 1 6 3 8 2 7 4 9. The elements in the sequence represent the number of the DRU. The sequence shown here is only an example and should not be understood as a limitation on the embodiments of the present application.

[0134] As another example, when the bandwidth is 40 MHz, M1 DRUs may include 416 subcarriers (16*26=416). The 26 subcarriers included in each of the M1 DRUs may be completely discrete, and every x subcarriers among the 416 subcarriers belong to a DRU (e.g., the first DRU). For example, the distribution of the 416 subcarriers may be: 1 10 6 15 3 12 8 17 2 11 7 16 4 13 9 18 1 10 6 15 3 12 8 17 2 11 7 16 4 13 9 18… That is, every 15 subcarriers belong to the same DRU, where x=15. The sequence shown here may be 110 6 15 3 12 8 17 2 11 7 16 4 13 9 18. The distribution shown here is based on the example of all subcarriers in M1 DRUs appearing in a cyclical manner. In a specific implementation, the subcarriers of some DRUs in M1 DRUs may also appear in a cyclical manner. For example, 26-tone DRU 1 may not meet the above-mentioned feature 1, or some subcarriers in 26-tone DRU 1 may not meet the above-mentioned feature 1.

[0135] As another example, when the bandwidth is 80 MHz, M1 DRUs can include 832 subcarriers (32*26=832). The 26 subcarriers included in each of the M1 DRUs can be completely discrete, and every x subcarriers among the 832 subcarriers belong to a DRU (such as the first DRU). For example, the distribution of the 832 subcarriers can be: 1 20 10 29 6 25 15 34 3 22 12 31 8 27 17 36 2 21 11 30 7 26 16 35 4 23 13 32 9 28 18 37. That is, every 31 subcarriers belong to the same DRU, x=31.

[0136] When the bandwidth is 160 MHz or 320 MHz, similar features may also be present, which are not listed here one by one.

[0137] The above description of M1 DRUs is merely an example and is intended to facilitate understanding of the feature described in item 1. For details on the distribution and order of the M1 DRUs, please refer to the following text.

[0138] Item 2: For some subcarriers in the M2 DRUs (such as the first part of subcarriers), every y subcarriers of the M*26 subcarriers corresponding to the M DRUs belong to the second DRU in order from low frequency to high frequency.

[0139] In other words, in the order of M*26 subcarriers from low frequency to high frequency, every y subcarriers in some of the M*26 subcarriers may belong to the second DRU. In other words, for some of the subcarriers in the second DRU, the number of subcarriers between two adjacent subcarriers in these subcarriers is y. The "y" shown in the embodiment of the present application is measured based on M DRUs, or in other words, the measurement standard of y is based on M*26 subcarriers.

[0140] The value of y can be different for different bandwidths. y is a positive integer. For example, y > x + M2. Alternatively, y > M - 1. For example, y can also be greater than M.

[0141] For example, when the bandwidth is 20MHz, the distribution of 234 subcarriers (9*26=234) can be: 5 1 6 3 8 2 7 4 9 1 6 3 8 5 2 7 4 9 1 6 3 8 2 7 4 9 5.... That is, for the first part of the subcarriers, the 234 subcarriers are distributed in order from low frequency to pilot, and every y subcarriers can belong to the second DRU. In the above example, y=12. The distribution of the first part of the subcarriers of the second DRU is shown here by way of example, and the distribution of all the subcarriers of the second DRU is not shown. The value of y shown here is only an example. For other values ​​of y, please refer to the following, such as y can also be equal to 9 or 10 or 11, etc. The order of the DRUs shown here is only an example and should not be understood as a limitation on the embodiments of the present application.

[0142] Combined with Item 1 and Item 2, for some subcarriers among the M1 DRUs and the M2 DRUs, the frequency of occurrence of the subcarriers in the first part of subcarriers is less than the frequency of occurrence of the subcarriers in the first DRU. Taking the distribution as 5 1 6 3 8 2 7 4 9 1 6 3 8 5 2 7 4 9 1 6 3 8 2 7 4 9 5... as an example, the frequency of occurrence of the subcarriers in the first part of subcarriers is 1 / 13, or in other words, one subcarrier belonging to the first part of subcarriers appears every 12 subcarriers. For the M1 DRUs, the frequency of occurrence of the subcarriers in the first DRU is 1 / 8 or in other words, one subcarrier belonging to the first DRU appears every 7 subcarriers.

[0143] The above description about the M2 DRUs is only an example, and the above description is for the convenience of understanding Item 2 above. For the distribution or order, etc. of the M2 DRUs, reference can also be made to the following text.

[0144] Item 3: 3a: For some subcarriers (such as the second part of subcarriers) among the M2 DRUs, multiple subcarriers belonging to the second DRU are consecutive (when cited below, it is described by taking 3a as an example). 3b: For some subcarriers (such as the second part of subcarriers) among the remaining subcarriers other than some subcarriers (such as the first part of subcarriers) in the M2 DRUs, every z subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M DRUs belong to the second DRU, where z < y (when cited below, it is described by taking 3b as an example).

[0145] That is to say, among the M * 26 subcarriers corresponding to the M DRUs, there can be multiple subcarriers belonging to the second DRU that are consecutive. For example, 2 subcarriers belonging to the second DRU among the M * 26 subcarriers can be consecutive, or 3 subcarriers belonging to the second DRU are consecutive, or 4 subcarriers belonging to the second DRU are consecutive, or 5 subcarriers belonging to the second DRU are consecutive, and they are not listed one by one here. Or, for some subcarriers among the M2 DRUs, every z subcarriers in the order from low frequency to high frequency among the M * 26 subcarriers corresponding to the M DRUs belong to the second DRU. z is less than y. For example, z = 1, or z = 2, or z = 3, or z = 4, etc., and they are not listed one by one here.

[0146] In an embodiment of the present application, multiple consecutive subcarriers (or referred to as multiple consecutive subcarriers) belonging to the second DRU can be distributed near the subcarriers in the M1 DRUs, thereby reducing the number of subcarriers belonging to the first DRU by increasing the number of subcarriers belonging to the second DRU with a sliding window of 13 subcarriers, and then increasing the transmission power of some subcarriers in the M1 DRUs (such as some subcarriers located near multiple consecutive subcarriers of the second DRU and belonging to the M1 DRUs). In addition to the above method, the number of target subcarriers in the sliding window can be reduced by adding various other non-target subcarriers, thereby increasing the transmission power of the target subcarriers in the sliding window. The following is an explanation.

[0147] As an example, when the bandwidth is 20MHz, the M1 DRUs (such as M1=8) in the subcarrier planning can be cycled with the subcarriers of the 8 26-tone DRUs respectively (such as cycling in the order of 16382749). Among the M*26 subcarriers, the frequency of occurrence of the subcarriers of the first part of the subcarriers in the M2 DRUs (such as 26-tone DRU 5) is lower than the frequency of occurrence of the subcarriers of the aforementioned 8 26-tone DRUs, or the frequency of occurrence of the subcarriers of the first part of the subcarriers in the M2 DRUs is lower than the frequency of occurrence of the subcarriers of any DRU in the aforementioned 8 26-tone DRUs. Exemplarily, the frequency of occurrence of some subcarriers in the M2 DRUs can be once every 10 subcarriers to every 13 subcarriers, or the subcarriers of the M2 DRUs appear once every 9 to 12 subcarriers. Because the frequency of the first portion of subcarriers in 26-tone DRU 5 is reduced within the M*26 subcarriers, after the eight 26-tone RUs satisfy the 26 subcarrier allocation requirement, some subcarriers remain unallocated in 26-tone DRU 5. By properly distributing the unallocated subcarriers belonging to 26-tone DRU 5, the number of subcarriers belonging to a DRU (e.g., one of the M1 DRUs) within a specific MHz can be reduced, thereby increasing the subcarrier transmit power.

[0148] As another example, when the bandwidth is 40MHz, the M1 DRUs (such as M1=16) in the subcarrier planning can be cycled with the subcarriers of the 16 26-tone DRUs respectively. The frequency of occurrence of the subcarriers of the first part of the subcarriers in the M2 DRUs (such as 26-tone DRU 5 and 26-tone DRU 14) is lower than the frequency of occurrence of the subcarriers of any of the aforementioned 16 26-tone DRUs. Similarly, after the M1 26-tone DRUs meet the allocation of 26 subcarriers, some subcarriers in the M2 DRUs are not allocated. By reasonably distributing the aforementioned unallocated subcarriers, the number of subcarriers of the first DRU within a certain 1MHz can be reduced, and the transmission power of the subcarriers within the 1MHz can be increased.

[0149] In combination with the above items 2 and 3, for some subcarriers in the M2 DRUs (such as the first part of subcarriers), every y subcarriers in the M*26 subcarriers corresponding to the M DRUs in the order from low frequency to high frequency belong to the second DRU; for some subcarriers in the M2 DRUs (such as the second part of subcarriers), there are multiple subcarriers belonging to the second DRU in the M*26 subcarriers that are continuous. Alternatively, for some subcarriers in the M2 DRUs (such as the first part of subcarriers), every y subcarriers in the order from low frequency to high frequency among the M*26 subcarriers corresponding to the M DRUs belong to the second DRU; for some subcarriers in the M2 DRUs (such as the second part of subcarriers), every z subcarriers in the order from low frequency to high frequency among the M*26 subcarriers corresponding to the M DRUs belong to the second DRU. Alternatively, for some subcarriers in the M2 DRUs (such as the first part of subcarriers), every y subcarriers in the M*26 subcarriers corresponding to the M DRUs in order from low frequency to high frequency belong to the second DRU, for some subcarriers in the M2 DRUs (such as the second part of subcarriers #1), there are multiple subcarriers belonging to the second DRU that are continuous in the M*26 subcarriers, and for some subcarriers in the M2 DRUs (such as the second part of subcarriers #2), every z subcarriers in the M*26 subcarriers corresponding to the M DRUs in order from low frequency to high frequency belong to the second DRU.

[0150] In an embodiment of the present application, the above-mentioned unallocated partial subcarriers, empty subcarriers, DC subcarriers, protection subcarriers or additional subcarriers can be distributed around the subcarriers of the M1 DRUs. For the description of a bandwidth of 80 MHz or greater, please refer to the description of 20 MHz or 40 MHz, which will not be described in detail here.

[0151] For ease of description, the subcarriers, null subcarriers, DC subcarriers, and protection subcarriers in the M2 DRUs are referred to as non-target subcarriers, and the subcarriers in the M1 DRUs are referred to as target subcarriers (subcarriers other than the additional subcarriers in the DRU as shown in Table 2 or Table 3). When the DRU size is greater than 52 subcarriers, the 106-tone DRU may further include an additional 2 subcarriers (as shown in Table 3), and the 242-tone DRU may further include an additional 4 subcarriers. The additional subcarrier may be a target subcarrier, or a non-target subcarrier.

[0152] In an embodiment of the present application, 3c: for some of the subcarriers in the M2 DRUs, the maximum number of subcarriers between two adjacent non-target subcarriers in the subcarriers corresponding to the M DRUs can be 12 (hereinafter referred to as satisfying 3c for explanation). In other words, for some of the non-target subcarriers, the maximum number of subcarriers between two adjacent non-target subcarriers in the subcarriers corresponding to the M DRUs can be 12. Exemplarily, for some of the non-target subcarriers, a non-target subcarrier appears every 12 subcarriers in the subcarriers corresponding to the M DRUs, or for some of the non-target subcarriers, a non-target subcarrier appears every 13 subcarriers in the subcarriers corresponding to the M DRUs. The non-target subcarriers shown here may belong to a subcarrier in one of the M2 DRUs, or the non-target subcarrier may belong to a subcarrier in two of the M2 DRUs, or the non-target subcarrier may belong to a subcarrier in three of the M2 DRUs, etc., which are not listed one by one here.

[0153] For ease of reference, the numbers 3a / 3b / 3c are used above, but they should not be understood as limitations on the embodiments of the present application.

[0154] Item 4: The number of subcarriers belonging to the second DRU in the first unit window is greater than the number of subcarriers belonging to the second DRU in the second unit window.

[0155] In other words, the subcarrier density of the second DRU in the first unit window is greater than the subcarrier density of the second DRU in the second unit window.

[0156] Both the first unit window and the second unit window include n subcarriers with consecutive index values, the subcarrier with the lowest frequency in the first unit window is different from the subcarrier with the lowest frequency in the second unit window, and the subcarrier with the highest frequency in the first unit window is different from the subcarrier with the highest frequency in the second unit window. Exemplarily, the first unit window and the second unit window can be different windows with 13 subcarriers as sliding windows. As introduced in term 3 above, 1MHz can include 13 subcarriers, so when 13 subcarriers are used as a sliding window, the number of subcarriers belonging to a certain DRU can correspond to the number of subcarriers within 1MHz, and can also be effectively combined with the condition of maximum power spectrum density, such as the unit of measurement of power spectrum density is 1MHz, thereby simply and quickly determining the transmit power of the subcarrier.

[0157] When the subcarriers in the M1 DRUs satisfy the above-mentioned item 1, and the first part of the subcarriers in the M2 DRUs satisfy the above-mentioned item 2, and the second part of the subcarriers in the M2 DRUs satisfy the above-mentioned item 3, there may be one or more non-target subcarriers in 1MHz in the entire bandwidth that are greater than the number of non-target subcarriers in other 1MHz, and the number of target subcarriers in the one or more 1MHz is less than the number of target subcarriers in other 1MHz. Since the number of target subcarriers in one or more 1MHz is reduced, the transmission power of the target subcarriers in the one or more 1MHz is greater than the transmission power of the target subcarriers in other 1MHz, thereby increasing the transmission power of the target subcarriers in the one or more 1MHz. The remaining subcarriers, null subcarriers, direct current (DC) subcarriers or protection subcarriers, etc. (such as additional subcarriers or no additional subcarriers) in the M2 DRUs except for the above-mentioned part of the subcarriers (i.e., the first part of the subcarriers) can be distributed around the subcarriers of the M1 DRU. The positions of the remaining subcarriers, null subcarriers, DC subcarriers, or guard subcarriers can be determined by the position or number of subcarriers belonging to the M1 DRUs within a certain 1MHz or multiple 1MHz bands where the transmit power needs to be increased. For example, under the maximum power spectrum power limit within 1MHz with 13 consecutive subcarriers as a sliding window, the number of non-target subcarriers within a certain 1MHz or certain 1MHz bands can be increased as much as possible, thereby reducing the number of subcarriers within 1MHz of other 26-tone DRUs, 52-tone DRUs, or 106-tone RUs and increasing the transmit power.

[0158] In an embodiment of the present application, subcarrier planning can also make the subcarriers belonging to the second DRU or other subcarriers distributed near the DC subcarrier or the protection subcarrier by satisfying the above conditions, thereby avoiding the target subcarrier from being interfered with by the DC component or temporary channel as much as possible.

[0159] In combination with the features satisfied by the above-mentioned M 26-tone DRUs, the following example illustrates the subcarrier planning shown in the embodiment of the present application.

[0160] The following uses a bandwidth of 20 MHz as an example to illustrate subcarrier planning.

[0161] When the subcarrier spacing is 78.125KHz, the subcarrier range of 20MHz is [-128:127], that is, the subcarrier indexes from low frequency to high frequency are -128 to 127. 256 subcarriers can correspond to 9 26-tone DRUs (9*26=234). In addition to the 234 subcarriers corresponding to the 9 26-tone DRUs, the 256 subcarriers can also include one or more empty subcarriers, one or more DC subcarriers, one or more protection subcarriers, etc. As shown in Table 2, when the DRU size is 106-tone DRU, the 256 subcarriers can also include two additional subcarriers. The subcarrier with an index value of 0 can be a DC subcarrier, or the empty subcarrier near the subcarrier with an index value of 0 can also be considered as a DC subcarrier. The embodiment of the present application does not limit the method of distinguishing between DC subcarriers and empty subcarriers.

[0162] As an example, the sequence corresponding to M1 DRUs can be 16382749. For example, the subcarriers of M1 DRUs can be cyclic in this sequence. For another example, the subcarriers of M1 DRUs can be cyclic in the sequence after the sequence is cyclically shifted. For example, the sequence after the above sequence is cyclically shifted to the left by one position is 6 3 82 7 4 9 1. At this time, the subcarriers in M1 DRUs can appear cyclically in the order of 6 3 8 2 7 4 9 1. The "1" in the above sequence represents the subcarrier belonging to 26-tone DRU 1, "2" represents the subcarrier belonging to 26-tone DRU 2, and so on.

[0163] The above sequence can be determined as follows:

[0164] For example, the numbers of M1 DRUs are arranged in ascending order: 1, 2, 3, 4, 6, 7, 8, 9;

[0165] Put the second half on the second line:

[0166] 1, 2, 3, 4

[0167] 6, 7, 8, 9

[0168] Put the second half of each line on the third and fourth lines:

[0169] 1, 2

[0170] 6, 7

[0171] 3, 4

[0172] 8, 9

[0173] Reading by column, we can get 1, 6, 3, 8, 2, 7, 4, 9.

[0174] The above sequence can ensure that the number of subcarriers between adjacent subcarriers belonging to the same DRU in the 52-tone DRU composed of the above 26-tone DRU and the 106-tone DRU composed of the above 26-tone DRU is greater than a certain threshold, thereby minimizing the number of subcarriers belonging to the same DRU per MHz and maximizing the subcarrier transmit power. The determination method shown above is only an example, and the specific method for obtaining the sequence is not limited in the embodiments of this application.

[0175] As another example, the sequence corresponding to M1 DRUs can be 2 6 3 8 1 7 4 9. For example, the subcarriers of M1 DRUs can be cyclically shifted in this sequence. For example, the subcarriers of M1 DRUs can be cyclically shifted in this sequence. For example, if the sequence above is cyclically shifted to the left by two bits, the sequence is 38174926. In this case, the subcarriers in M1 DRUs can be cyclically shifted in the order of 3, 8, 1, 7, 4, 9, 2, and 6.

[0176] In an embodiment of the present application, the numbers of the two 26-tone RUs that make up the same 52-tone RU can be swapped. For example, in the above example, 1 6 3 8 2 7 4 9 is used. After swapping the order of 26-tone DRU 1 and 26-tone DRU 2 that make up 52-tone DRU 1, the sequence becomes 2 6 3 8 1 7 4 9. For another example, after swapping the order of 26-tone DRU 3 and 26-tone DRU 4 that make up 52-tone 2, the sequence becomes 2 6 4 8 1 7 3 9, etc. Alternatively, the sequence after the order swap can be cyclically shifted. In the above sequence, the sequence after the number swap or the sequence after the cyclic shift of the 26-tone DRUs that make up the same 52-tone DRU also falls within the scope of protection of the embodiment of the present application. They are not listed here one by one.

[0177] For ease of description, the following text uses 1, 6, 3, 8, 2, 7, 4, and 9 as examples, but they should not be understood as limitations on the embodiments of the present application.

[0178] Example 1:

[0179] Table 4 exemplarily shows a subcarrier planning. The values ​​in the odd columns in Table 4 represent the 256 subcarrier indices (or subcarrier numbers or subcarrier index values, etc.) from -128 to +127 in 20MHz, and the values ​​in the even columns represent the numbers of the 26-tone DRUs in 20MHz, that is, the subcarrier belongs to the mth 26-tone DRU (or 26-tone DRU m). The value of m is greater than or equal to 1 and less than or equal to M. For example, the value of m can be equal to any of the following: 1, 2, 3, 4, 5, 6, 7, 8, 9. The leftmost column in Table 4 is the 1st column (belonging to the odd column), and the rightmost column can be the 16th column (belonging to the even column). The two 106-1 in Table 4 are the additional two subcarriers in 106-tone 1 shown in Table 2, and the two 106-2 in Table 4 are the additional two subcarriers in 106-tone DRU 2 shown in Table 2. The blank areas in Table 4 can be empty subcarriers or protection subcarriers, etc. The description of the tables here also applies to the following. For the description of each table shown below, please refer to Table 4 or the above description of M or M1 or M2, which will not be repeated below.

[0180] Table 4

[0181] The subcarrier planning shown in Table 4 is only an example. Subcarrier planning can also be in other forms, such as showing the index values ​​of each 26-tone DRU one by one. As shown in Table 4, the index values ​​of the 26 subcarriers of 26-tone DRU 1 can be: -118, -110, -101, -92, -84, -75, -66, -58, -49, -40, -32, -23, -10, 3, 16, 24, 33, 42, 50, 59, 68, 76, 85, 94, 102, 111. Among them. The subcarrier with an index value of -118 and the subcarrier with an index value of -110 can be adjacent subcarriers, and the subcarrier with an index value of -110 and the subcarrier with an index value of -101 can be adjacent subcarriers, etc., which are not listed here one by one. The index values ​​of the 26 subcarriers of 26-tone DRU 2 can be: -114, -105, -97, -88, -79, -71, -62, -53, -45, -36, -27, -19, -6, 7, 20, 29, 37, 46, 55, 63, 72, 81, 89, 98, 107, 115. For the index values ​​of the 26 subcarriers of other DRUs, please refer to Table 4, which will not be listed here one by one. In a specific implementation, subcarrier planning can also have other forms, which will not be listed here one by one. The description of the form of subcarrier planning here is also applicable below and will not be repeated below.

[0182] With reference to Table 2, when the DRU size is a 52-tone DRU, for example, the index values ​​of the 52 subcarriers of the 52-tone DRU 1 may include the index values ​​of the 26 subcarriers of the 26-tone DRU 1 and the index values ​​of the 26 subcarriers of the 26-tone DRU 2. Taking Table 4 as an example, the index values ​​of the 52 subcarriers of 52-tone DRU 1 can be: -118, -114, -110, -105, -101, -97, -92, -88, -84, -79, -75, -71, -66, -62, -58, -53, -49, -45, -40, -36, -32, -27, -23, -19, -10, -6, 3, 7, 16, 20, 24, 29, 33, 37, 42, 46, 50, 55, 59, 63, 68, 72, 76, 81, 85, 89, 94, 98, 102, 107, 111, 115. The following are examples, and they are not listed here one by one. When the DRU size is 106-tone DRU, the index values ​​of the 106 subcarriers of 106-tone DRU 1 may include the index values ​​of the 26 subcarriers of 26-tone DRU 1, the index values ​​of the 26 subcarriers of 26-tone DRU 2, the index values ​​of the 26 subcarriers of 26-tone DRU 3, the index values ​​of the 26 subcarriers of 26-tone DRU 4, and two additional subcarriers. These are not listed here one by one.

[0183] As shown in Table 4, for M1 DRUs, the subcarriers of these M1 DRUs are cyclically arranged in the order of 1, 6, 3, 8, 2, 7, 4, and 9. For example, the subcarrier with an index value of -118 is spaced from the subcarrier with an index value of -110, and the number of subcarriers belonging to M1 DRUs is 7 (i.e., x=7), which are the subcarrier with an index value of -117 (belonging to 26-tone DRU 6), the subcarrier with an index value of -116 (belonging to 26-tone DRU 3), the subcarrier with an index value of -115 (belonging to 26-tone DRU 8), the subcarrier with an index value of -114 (belonging to 26-tone DRU 2), the subcarrier with an index value of -113 (belonging to 26-tone DRU 7), the subcarrier with an index value of -112 (belonging to 26-tone DRU 4), ​​and the subcarrier with an index value of -111 (belonging to 26-tone DRU 9). For example, the number of subcarriers between the subcarrier with an index value of -110 and the subcarrier with an index value of -101, and belonging to M1 DRUs, is 7, namely, the subcarrier with an index value of -109 (belonging to 26-tone DRU 6), the subcarrier with an index value of -108 (belonging to 26-tone DRU 3), the subcarrier with an index value of -107 (belonging to 26-tone DRU 8), the subcarrier with an index value of -105 (belonging to 26-tone DRU 2), the subcarrier with an index value of -104 (belonging to 26-tone DRU 7), the subcarrier with an index value of -103 (belonging to 26-tone DRU 4), ​​and the subcarrier with an index value of -102 (belonging to 26-tone DRU 7). They are not listed here one by one. That is, the M1 DRUs shown in Table 4 meet the characteristics of item 1 above.

[0184] As shown in Table 4, the index values ​​of the 26 subcarriers of the 26-tone DRU 5 are: -119, -106, -93, -80, -67, -54, -41, -28, -15, -14, -13, -12, -11, 11, 12, 13, 14, 15, 28, 41, 54, 67, 80, 93, 106, 119. The index values ​​of the first part of the subcarriers in the 26-tone DRU 5 can be: -119, -106, -93, -80, -67, -54, -41, -28, -15, or 15, 28, 41, 54, 67, 80, 93, 106, 119. For example, the number of subcarriers between the subcarrier with index value -119 and the subcarrier with index value 106 is 12, that is, y = 12. Some of the subcarriers in the M2 DRUs shown in Table 4 (i.e., the first part of subcarriers) meet the characteristics of the above item 2. The index values ​​of the first part of subcarriers in Table 4 are shown as symmetric. In a specific implementation, the index values ​​of the first part of subcarriers may also be asymmetric.

[0185] As shown in Table 4, the five subcarriers with index values ​​of -15, -14, -13, -12, and -11 are continuous, and the five subcarriers with index values ​​of 11, 12, 13, 14, and 15 are also continuous. That is, some of the subcarriers in the M2 DRUs shown in Table 4 (i.e., the second part of subcarriers) meet the feature 3a of the above-mentioned item 3. In an embodiment of the present application, one or more subcarriers may overlap with the first part of subcarriers in the second DRU and the second part of subcarriers. Alternatively, the second part of subcarriers may not include the subcarriers in the first part of subcarriers. For example, the index values ​​of the second part of subcarriers may also be: -14, -13, -12, -11, or 11, 12, 13, and 14, respectively. Table 4 is shown as an example to meet 3a in the above-mentioned item 3. In a specific implementation, the second part of subcarriers may also meet 3b in the above-mentioned item 3, which will not be listed one by one here.

[0186] Using a sliding window with a range of 13 consecutive subcarriers, it can be found that the sliding window corresponding to subcarrier index values ​​of -10 to -3 (such as the sliding window including subcarrier index values ​​of -10 to -3) and the sliding window corresponding to subcarrier index values ​​of 3 to 10 (such as the sliding window including subcarrier index values ​​of 3 to 10) can achieve the following number of subcarriers per MHz:

[0187] 26-tone DRU: 1tone / MHz; 52-tone DRU: 2tone / MHz; 106-tone DRU: 4tone / MHz.

[0188] Exemplarily, the first unit window may correspond to a sliding window with index values ​​including -10 to -3, or a sliding window with index values ​​including 3 to 10. In other words, the 1MHz corresponding to the index values ​​including -10 to -3, and the 1MHz corresponding to the index values ​​3 to 10 are two 1MHz for increasing the transmission power. The sliding window other than the first unit window may be the second unit window. As shown in Table 4, the number of subcarriers of the second DRU in the first unit window is 5, and the number of subcarriers of the second DRU in the second unit window is 1. That is, Table 4 meets the characteristics of item 4 above. 106-tone 1 and 106-tone2 in Table 4 are non-target subcarriers.

[0189] The second unit window can achieve the following number of subcarriers per MHz:

[0190] 26-tone RU: 2tone / MHz; 52-tone RU: 3tone / MHz; 106-tone RU: 6tone / MHz.

[0191] The smaller the number of subcarriers belonging to a DRU in each MHz, the greater the power that can be allocated to a single subcarrier. From the number of subcarriers per MHz in the first unit window and the second unit window, it can be seen that the performance in the first unit window is greater than the performance in the second unit window. By reducing the number of subcarriers of M1 DRUs in the first unit window, the transmission power of the subcarriers in the first unit window can be increased. For example, subcarrier index values ​​of -10 to -3 and one or more subcarrier index values ​​of 3 to 10 can be used as pilot subcarriers to increase the pilot energy, so that when the second communication device processes the pilot signal, the accuracy of the second communication device in correcting the frequency deviation or phase deviation can be improved, thereby improving the accuracy of demodulation.

[0192] In the embodiment of the present application, based on Table 4, the subcarrier planning may also have other variations, and the subcarrier planning that satisfies at least one of the following rules also falls within the protection scope of the embodiment of the present application.

[0193] 1. The sequence shown in Table 4 is 1 6 3 8 2 7 4 9. The sequence may also be replaced by a cyclically shifted sequence of 1 6 3 8 2 7 4 9; or, the sequence 2 6 3 8 1 7 4 9, which is a sequence obtained by swapping the order of 1 and 2, or a cyclically shifted sequence obtained by swapping the order of 1 and 2; or, the sequence 3 and 4, which is a cyclically shifted sequence obtained by swapping the order of 3 and 4; or, the sequence 6 and 7, which is a cyclically shifted sequence obtained by swapping the order of 6 and 7; or, the sequence 8 and 9, which is a cyclically shifted sequence obtained by swapping the order of 8 and 9. For descriptions of the sequences, please refer to the above and will not be detailed here.

[0194] 2. All subcarriers in the M1 DRUs shown in Table 4 belong to the same DRU every 7 subcarriers. Subcarriers of some DRUs in the M1 DRUs may belong to the same DRU every 7 subcarriers, or subcarriers of some DRUs in the M1 DRUs may not belong to the same DRU every 7 subcarriers.

[0195] 3. In Table 4, the subcarrier index values ​​of the 26-tone DRU 5 are: -119, -106, -93, -80, -67, -54, -41, -28, -15, -14, -13, -12, -11, 11, 12, 13, 14, 15, 28, 41, 54, 67, 80, 93, 106, and 119. The index values ​​of some subcarriers in the 26-tone DRU 5 (such as the first part of subcarriers) can also be shifted. For example, the index value of the first subcarrier from low frequency to high frequency in the 26-tone DRU 5 can be another index value in [-121:-109], the index value of the second subcarrier from low frequency to high frequency in the 26-tone DRU 5 can be another index value in [-108:-96], and so on. The positions of the five consecutive subcarriers in the 26-tone DRU5 can also be shifted. The positions of the subcarriers of the M2 DRUs can make the M1 DRU meet the above-mentioned item 1 and some subcarriers in the M2 DRU meet item 2, or some subcarriers in the M2 DRU meet item 3 (or meet item 3), all of which fall within the scope of protection of the embodiments of the present application.

[0196] 4. After the order of the subcarriers of the 8 DRUs is determined according to the above sequence, and after the order of the 26-tone DRU 2 is also determined, other subcarriers can be inserted in (or outside) the above-determined order, such as DC subcarriers, null subcarriers, guard subcarriers, or data or pilot subcarriers that are not composed of 26-tone DRUs, such as 106-tone 1 or 1-6-tone 2.

[0197] 5. In Table 4, y=12. In the embodiment of the present application, y>8, for example, the value of y may also be 9, 10, or 11.

[0198] 6. The position of the first unit window in Table 4 is located near the DC subcarrier. In other subcarrier planning, the 1MHz that needs to increase the transmission power can be shifted to other subcarrier indexes. For example, the position of the first unit window can also be located at the edge of 20MHz. For example, protection subcarriers are used to fill the first unit window that needs to increase the transmission power, thereby reducing the number of subcarriers belonging to M1 DRUs in the first unit window. In other words, the positions of the two 1MHz that need to increase the transmission power in Table 4 are only examples. The two 1MHz shown in Table 4 can also be located at the edge of 20MHz. For example, protection subcarriers can be filled in these two 1MHz, thereby reducing the number of subcarriers belonging to M1 DRUs in these two 1MHz.

[0199] Other subcarrier planning obtained based on the above features 1 to 6 also falls within the protection scope of the embodiments of the present application.

[0200] Example 2:

[0201] Table 5 exemplarily shows a subcarrier planning. For descriptions of odd columns, even columns, or numbers in Table 5, please refer to Table 4 and will not be repeated here.

[0202] Table 5

[0203] In Table 5, x=7 and y=12. As shown in Table 5, the index values ​​of the 26 subcarriers of the 26-tone DRU 5 can be, in sequence: -109, -96, -83, -70, -57, -44, -43, -42, -41, -30, -29, -28, -27, 27, 28, 29, 30, 41, 42, 43, 44, 57, 70, 83, 96, 109. For example, the index values ​​of the first part of the subcarriers in the 26-tone DRU 5 can be, in sequence: -109, -96, -83, -70, -57, -44, or 44, 57, 70, 83, 96, 109. For example, the index values ​​of the second part of the subcarriers in the 26-tone DRU5 can be: -44, -43, -42, -41, or -30, -29, -28, -27, or 27, 28, 29, 30, or 41, 42, 43, 44. The second part of the subcarriers shown here overlaps with the first part of the subcarriers. For example, the index values ​​of the second part of the subcarriers in the 26-tone DRU5 can be: -43, -42, -41, or -30, -29, -28, -27, or 27, 28, 29, 30, or 41, 42, 43. The index values ​​of the subcarriers of each 26-tone DRU in Table 5 and the characteristics they meet can refer to the description of items 1 to 4 above or reference Table 4, etc., and will not be described in detail here.

[0204] In Table 5, the performance that can be achieved within the first unit window is as follows:

[0205] 26-tone RU: 1tone / MHz; 52-tone RU: 2tone / MHz; 106-tone RU: 5tone / MHz.

[0206] For example, the first unit window may correspond to a sliding window with index values ​​ranging from -39 to -32, or a sliding window with index values ​​ranging from 32 to 39. In Table 5, 106-tone 1 and 106-tone 2 are target subcarriers. Because the additional two subcarriers are target subcarriers, when the DRU size is a 106-tone DRU, the number of subcarriers per MHz within a 1MHz range is 5.

[0207] The performance that can be achieved within the second unit window is as follows:

[0208] 26-tone RU: 2tone / MHz; 52-tone RU: 3tone / MHz; 106-tone RU: 6tone / MHz.

[0209] The subcarrier planning provided in the embodiment of the present application can effectively increase the transmission power of subcarriers with subcarrier index values ​​within the range of -39 to -32, and increase the transmission power of subcarriers with subcarrier index values ​​within the range of 32 to 39.

[0210] In the embodiment of the present application, taking Table 5 as an example, subcarrier planning may also have the following features:

[0211] The positions of the 1MHz that require increased transmit power shown in Table 5 are only examples. The two 1MHz shown in Table 5 can be shifted within the range of [-128:127], or the position of the first unit window can be shifted within the range of [-128:127], or the index value of the subcarrier within the first unit window can be changed. Since there are not many non-target subcarriers that can be used at the edge of 20MHz (i.e., the subcarriers that will not affect the number of subcarriers per 1MHz of some or all of the M1 DRUs, such as the subcarriers of 26-tone DRU 5, and will not affect the remaining 26-tone RUs, 52-tone RUs, and 106-tone RUs), the extra two subcarriers in the 106-tone DRU can be used to fill the 1MHz that requires increased transmit power.

[0212] The other features satisfied by Table 5 can be described in relation to Table 4. For example, Table 5 can also satisfy the above features 1 to 5, etc., which will not be repeated here.

[0213] The above examples 1 and 2 are achieved by downgrading the 26-tone DRU 5 to obtain more flexible non-target subcarriers. These non-target subcarriers are distributed around the target subcarriers, thereby reducing the number of subcarriers per MHz in the first unit window. In the following example 3, the non-target subcarriers (such as the non-target subcarriers with index values ​​of -5 to -3 in Table 6, or the non-target subcarriers with index values ​​of 3 to 5) can be distributed around the subcarrier with an index value of 0, thereby effectively reducing the interference of the target subcarrier with the DC component.

[0214] Example 3:

[0215] Table 6 shows an exemplary subcarrier planning. For the description of odd columns, even columns, and numbers in Table 6, please refer to Table 4 and will not be repeated here.

[0216] Table 6

[0217] In Table 6, x=7 and y=12. As shown in Table 5, the index values ​​of the 26 subcarriers of the 26-tone DRU 5 can be: -121, -118, -105, -92, -79, -66, -53, -40, -27, -14, -5, -4, -3, 3, 4, 5, 14, 27, 40, 53, 66, 79, 92, 105, 118, 121. For example, the index values ​​of the first part of the subcarriers in the 26-tone DRU 5 can be: -118, -105, -92, -79, -66, -53, -40, -27, -14, or 14, 27, 40, 53, 66, 79, 92, 105, 118. For example, the index values ​​of the second portion of subcarriers in the 26-tone DRU 5 can be -5, -4, -3, or 3, 4, and 5, respectively. The second portion of subcarriers shown here does not overlap with the first portion of subcarriers. The subcarrier index values ​​and the characteristics met by each 26-tone DRU in Table 6 are not detailed here.

[0218] Table 7 shows an exemplary subcarrier planning. For descriptions of odd and even columns and numbers in Table 7, refer to Table 4 and are not repeated here. In Table 7, x = 7 and y = 10. For other descriptions of Table 7, refer to Table 6 and are not repeated here.

[0219] Table 7

[0220] In the embodiment of the present application, taking Table 6 and Table 7 as examples, subcarrier planning may also have the following features:

[0221] Non-target subcarriers (e.g., multiple consecutive non-target subcarriers) can also be distributed around the guard subcarriers, thereby reducing interference from other adjacent channels on the target subcarriers. For other features satisfied by Tables 6 and 7, please refer to Table 4. Tables 6 and 7 also satisfy features 1 to 5 above, which will not be repeated here.

[0222] The following uses a 40 MHz bandwidth as an example to illustrate subcarrier planning.

[0223] When the subcarrier spacing is 78.125KHz, the subcarrier range of 40MHz is [-256:255], that is, the subcarrier indexes from low frequency to high frequency are -256 to 255. 512 subcarriers can correspond to 18 26-tone DRUs (18*26=468). In addition to the 468 subcarriers corresponding to the 18 26-tone DRUs, the 512 subcarriers can also include one or more empty subcarriers, one or more DC subcarriers, one or more protection subcarriers, etc. As shown in Table 3, when the DRU size is 106-tone DRU, the 256 subcarriers can also include an additional 8 subcarriers. When the DRU size is 242-tone DRU, the 512 subcarriers can also include an additional 8 subcarriers.

[0224] As an example, the sequence corresponding to M1 DRUs may be 1 10 6 15 3 12 8 17 2 11 7 16 4 13 9 18. For example, the subcarriers of the M1 DRUs may be cycled according to the sequence. For another example, the subcarriers of the M1 DRUs may be cycled according to a sequence obtained by cyclically shifting the sequence.

[0225] The above sequence can be determined as follows:

[0226] For example, the numbers of M1 DRUs are arranged in ascending order: 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18.

[0227] Put the second half on the second line:

[0228] 1, 2, 3, 4, 6, 7, 8, 9

[0229] 10, 11, 12, 13, 15, 16, 17, 18

[0230] Put the second half of each line on the third and fourth lines:

[0231] 1, 2, 3, 4

[0232] 10, 11, 12, 13

[0233] 6, 7, 8, 9

[0234] 15, 16, 17, 18

[0235] Reading by column, we can get 1, 10, 6, 15, 3, 12, 8, 17, 2, 11, 7, 16, 4, 13, 9, 18.

[0236] As another example, the sequence corresponding to M1 DRUs may be 2 10 6 15 3 12 8 17 1 11 7 16 4 13 9 18. For example, the subcarriers of M1 DRUs may be cyclically shifted using this sequence. Another example is that the subcarriers of M1 DRUs may be cyclically shifted using this sequence. These examples are not listed here one by one.

[0237] In this embodiment of the present application, the numbers of the two 26-tone RUs that make up the same 52-tone RU can be swapped. For example, in the example above, the numbers are 1 10 6 15 3 12 8 17 2 11 7 16 4 13 9 18. After swapping the order of 26-tone DRU 1 and 26-tone DRU 2 in 52-tone DRU 1, the sequence becomes 2 10 6 15 3 12 8 17 1 11 7 16 4 13 9 18. For another example, after swapping the order of 26-tone DRU 3 and 26-tone DRU 4 in 52-tone DRU 2, the sequence becomes 2 10 6 15 4 12 8 17 1 11 7 16 3 13 9 18, and so on. The sequence after the numbers of the 26-tone DRUs constituting the same 52-tone DRU are swapped in the above sequence also falls within the scope of protection of the embodiments of the present application.

[0238] For the convenience of description, 1 10 6 15 3 12 8 17 2 11 7 16 4 13 9 18 are used as examples below, but this should not be construed as a limitation to the embodiments of the present application.

[0239] Example 4:

[0240] Tables 8 and 9 exemplarily show a subcarrier planning. For the relevant description of Table 8 or Table 9, please refer to Table 4 and will not be described in detail here.

[0241] Table 8

[0242] Table 9

[0243] In Table 8, the subcarriers belonging to the same DRU are completely discrete. In Table 9, there are multiple continuous subcarriers in 26-tone DRU 5, and there are also multiple continuous subcarriers in 26-tone DRU 14. For example, the subcarrier with an index value of -44 in Table 8 belongs to 26-tone DRU 14, and the subcarrier with an index value of -44 in Table 9 belongs to 26-tone DRU 5. For another example, the subcarrier with an index value of -41 in Table 8 belongs to 26-tone DRU 5, and the subcarrier with an index value of -41 in Table 9 belongs to 26-tone DRU 14. For another example, the subcarrier with an index value of -29 in Table 8 belongs to 26-tone DRU 14, and the subcarrier with an index value of -29 in Table 9 belongs to 26-tone DRU 5. For another example, the subcarrier with an index value of -18 in Table 8 belongs to 26-tone DRU 14, and the subcarrier with an index value of -18 in Table 9 belongs to 26-tone DRU 5. For example, the subcarrier with index value 16 in Table 8 belongs to 26-tone DRU 5, and the subcarrier with index value 16 in Table 9 belongs to 26-tone DRU 14. For another example, the subcarrier with index value 29 in Table 8 belongs to 26-tone DRU 5, and the subcarrier with index value 29 in Table 9 belongs to 26-tone DRU 14.

[0244] As shown in Table 8 or Table 9, for M1 DRUs, the subcarriers of the M1 DRUs are cyclically arranged in the order of 1, 10, 6, 15, 3, 12, 8, 17, 2, 11, 7, 16, 4, 13, 9, and 18. For example, the interval between the subcarrier with an index value of -239 and the subcarrier with an index value of -222, and the number of subcarriers belonging to the M1 DRUs is 15, that is, x=15.

[0245] As shown in Table 8, the index values ​​of the 26 subcarriers of the 26-tone DRU 5 are: -214, -188, -162, -136, -110, -84, -58, -45, -43, -41, -30, -28, -19, -17, 16, 29, 42, 44, 58, 84, 110, 136, 162, 188, 214, 240. The index values ​​of the first part of the subcarriers in the 26-tone DRU 5 can be: -214, -188, -162, -136, -110, -84, -58, or 58, 84, 110, 136, 162, 188, 214, 240. For example, the number of subcarriers between the subcarrier with an index value of -214 and the subcarrier with an index value of -188 is 25, that is, y = 25. Similarly, the number of subcarriers between any two adjacent subcarriers in the first part of subcarriers shown above is 25.

[0246] As shown in Table 8, the index values ​​of the 26 subcarriers of the 26-tone DRU 14 are: -240, -227, -201, -175, -149, -123, -97, -71, -44, -42, -29, -18, 15, 17, 28, 30, 41, 43, 45, 71, 97, 123, 149, 175, 201, 227. The index values ​​of the first part of subcarriers in the 26-tone DRU 14 can be: -227, -201, -175, -149, -123, -97, -71, or 71, 97, 123, 149, 175, 201, 227. The number of subcarriers between any two adjacent subcarriers in the first part of subcarriers is 25.

[0247] As shown in Table 8, among some of the subcarriers of the M2 DRUs, the number of subcarriers between two adjacent non-target subcarriers is 12. For example, the number of subcarriers between the non-target subcarrier with an index value of -240 and the non-target subcarrier with an index value of -227 is 12, and the number of subcarriers between the non-target subcarrier with an index value of -227 and the non-target subcarrier with an index value of -214 is 12, and the number of subcarriers between the non-target subcarrier with an index value of -214 and the non-target subcarrier with an index value of -201 is 12, and so on. They are not listed here one by one. That is, some of the subcarriers in the M2 DRUs shown in Table 8 meet the above 3c. The description of Table 8 here also applies to Table 9 and will not be repeated below.

[0248] As shown in Table 9, the index values ​​of the 26 subcarriers of the 26-tone DRU 5 are: -214, -188, -162, -136, -110, -84, -58, -45, -44, -43, -30, -29, -28, -19, -18, -17, 42, 44, 58, 84, 110, 136, 162, 188, 214, and 240. For an explanation of the first part of subcarriers, please refer to Table 8 and will not be described in detail here.

[0249] The index values ​​of the 26 subcarriers of the 26-tone DRU 14 are: -240, -227, -201, -175, -149, -123, -97, -71, -42, -41, 15, 16, 17, 28, 29, 30, 41, 43, 45, 71, 97, 123, 149, 175, 201, and 227. For an explanation of the first part of subcarriers, please refer to Table 8 and will not be described in detail here.

[0250] In Table 8 or Table 9, the following performance can be achieved within the first unit window:

[0251] 26-tone RU: 1tone / MHz; 52-tone RU: 1tone / MHz; 106-tone RU: 2tone / MHz; 242-tone RU: 7tone / MHz.

[0252] The performance that can be achieved within the second unit window is as follows:

[0253] 26-tone RU: 1tone / MHz; 52-tone RU: 2tone / MHz; 106-tone RU: 3tone / MHz; 242-tone RU: 7tone / MHz.

[0254] For example, the first unit window may correspond to a sliding window with index values ​​ranging from -40 to -33, or a sliding window with index values ​​ranging from -27 to -20, or a sliding window with index values ​​ranging from 20 to 27, or a sliding window with index values ​​ranging from 33 to 40.

[0255] In the embodiment of the present application, subcarrier planning may also have other variations based on Table 8 or Table 9. For descriptions of the variations, please refer to the descriptions of Table 4 or other tables, which will not be described in detail here.

[0256] In Example 5 below, non-target subcarriers may be distributed around the subcarrier with an index value of 0, thereby effectively reducing interference of the DC component on the target subcarrier.

[0257] Example 5:

[0258] Table 10 exemplifies a subcarrier planning. For descriptions of odd-numbered columns, even-numbered columns, and numbers in Table 10, please refer to Table 4 and will not be repeated here.

[0259] Table 10

[0260] In Table 10, x = 15, y = 25. For the relevant description of Table 10, please refer to Table 9, which will not be described in detail here.

[0261] Each of the subcarrier plans listed above meets the characteristics of items 1 to 3 above. At the same time, each of the subcarrier plans listed above also meets the characteristic of item 4 above, that is, within a certain number of unit windows as sliding windows, the number of subcarriers belonging to the second DRU in the first unit window is greater than the number of subcarriers belonging to the second DRU in the second unit window.

[0262] In an embodiment of the present application, one or more 26-tone DRUs are reduced, and the number of times the subcarriers of the one or more 26-tone DRUs appear in the cycle is reduced, so that the unallocated subcarriers can play some other roles. The roles shown here may include but are not limited to: increasing the transmit power of a target subcarrier within a certain 1MHz, or reducing the interference of the target subcarrier on the DC subcarrier, or reducing the interference of the target subcarrier on other temporary channels, etc.

[0263] The embodiment of the present application also provides a hybrid scheduling, such as M1 DRUs can still meet the characteristics of the above-mentioned item 1, part of the subcarriers in the M2 DRUs are continuous, and the other part of the subcarriers can also be continuous. Table 11 exemplarily shows a subcarrier planning. The subcarrier index values ​​of the M1 DRUs are not shown in the ellipsis in Table 11. For the index values ​​of these M1 DRUs, please refer to the descriptions of Tables 4 to 7, which are not shown here one by one. As shown in Table 11, the 26-tone DRU 5 can be distributed around the DC subcarrier, such as the subcarrier index values ​​of the 26-tone DRU can be: -16 to -4, 4 to 16 respectively.

[0264] Table 11

[0265] For other features satisfied by Table 11, please refer to the descriptions of Tables 4 to 10 and will not be described in detail here.

[0266] The rules for subcarrier planning corresponding to 80 MHz, 160 MHz, and 320 MHz can refer to the above-mentioned subcarrier planning corresponding to 20 MHz or the subcarrier planning corresponding to 40 MHz, and are not listed here.

[0267] In a specific implementation, a communication device may utilize the above subcarrier planning to perform communication or data transmission. The following describes the method involved in the embodiment of the present application.

[0268] For example, the method may include: a first communication device sending a PPDU over a first bandwidth. Correspondingly, a second communication device receiving the PPDU over the first bandwidth. The present embodiment does not limit the information carried in the PPDU. The subcarrier planning corresponding to the first bandwidth can be found above and will not be detailed here.

[0269] Exemplarily, the subcarrier planning satisfies:

[0270] Some or all of the subcarriers in M1 out of M DRUs belong to the first DRU at intervals of x subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M1 DRUs. The first DRU is one of the M1 DRUs, and the first DRU includes multiple subcarriers with non-consecutive index values, where x < M1; Some of the subcarriers in M2 out of M DRUs belong to the second DRU at intervals of y subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M DRUs. The second DRU is one of the M2 DRUs, and the index values among some of the subcarriers in the second DRU are non-consecutive. The DRUs in the M1 DRUs and the DRUs in the M2 DRUs do not overlap, and M1 and M2 are both positive integers, and x + M2 < y.

[0271] For the description of subcarrier planning, reference can also be made to the descriptions in Items 1 to 4 above, or the descriptions in Tables 2 to 11, etc., which will not be elaborated here one by one.

[0272] In an embodiment of the present application, a STA may also be allowed to be allocated multiple DRUs, that is, multiple DRUs can be combined and allocated to a STA. For example, a 52-tone DRU and a 26-tone DRU form a 52 + 26-tone DMRU. Another example is that a 106-tone DRU and a 26-tone DRU form a 106 + 26-tone DMRU. Another example is that a 996-tone DRU and a 484-tone DRU form a 996 + 484-tone DMRU. For the description of the MRU, reference can be made to the description of the conventional RU or the description of subcarrier planning, which will not be elaborated here.

[0273] FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application. FIG. 3 is shown by taking the first communication device as an AP and the second communication device as a STA as an example. As shown in FIG. 3, the method includes:

[0274] 301. The AP sends a PPDU on a first bandwidth. Correspondingly, the STA receives the PPDU on the first bandwidth. The PPDU may correspond to at least M3 target users, and the resources corresponding to the M3 target users are determined based on the DRU size and the first bandwidth, where M3 is a positive integer less than or equal to M1.

[0275] In an embodiment of the present application, the PPDU carries a physical layer service data unit (PSDU) that needs to be transmitted to M3 target users, or the PPDU carries a PSDU that the AP needs to send to M3 target users, or the M3 target users need to receive their respective PSDUs from the above PPDU. Exemplarily, the STA can be one of the M3 target users. The following description takes the M3 target users including the first user as an example.

[0276] The following description is made by taking the first bandwidth of 20 MHz as an example.

[0277] As an example, when the DRU size is a 26-tone DRU, M3 may be less than or equal to 8. For example, the resource corresponding to the first user may be one of the M1 DRUs shown above.

[0278] As another example, when the DRU size is a 52-tone DRU, M3 may be less than or equal to 4. For example, the resource corresponding to the first user may be a DRU as shown below: 52-tone DRU 1, 52-tone DRU 2, 52-tone DRU 3, or 52-tone DRU 4. The index values ​​of the 52 subcarriers included in 52-tone DRU 1 may be the index values ​​of the 26 subcarriers included in 26-tone DRU 1, and the index values ​​of the 26 subcarriers included in 26-tone DRU 2. For the relationship between 52-tone DRU and 26-tone DRU, please refer to the relevant description in Table 2, which will not be described in detail here. For the index values ​​of the subcarriers of the 52-tone DRU, please refer to Tables 4 to 11, which will not be listed here one by one.

[0279] As another example, when the DRU size is a 104-tone DRU, M3 may be less than or equal to 2. For example, the resource corresponding to the first user may be a DRU as described below: 104-tone DRU 1 or 104-tone DRU2. The index value of the 104 subcarriers included in the 104-tone DRU1 may be the index value of the 26 subcarriers included in the 26-tone DRU 1, the index value of the 26 subcarriers included in the 26-tone DRU 2, the index value of the 26 subcarriers included in the 26-tone DRU 3, and the index value of the 26 subcarriers included in the 26-tone DRU 4. For the relationship between the 104-tone DRU and the 26-tone DRU, please refer to the relevant description in Table 2, which will not be described in detail here. For the index value of the subcarrier of the 104-tone DRU, please refer to Tables 4 to 11, which will not be listed here one by one.

[0280] The following description is made by taking the first bandwidth of 40 MHz as an example.

[0281] As an example, when the DRU size is a 26-tone DRU, M3 may be less than or equal to 16. For example, the resource corresponding to the first user may be one of the M1 DRUs shown above.

[0282] As another example, when the DRU size is a 52-tone DRU, M3 may be less than or equal to 8.

[0283] As another example, when the DRU size is a 104-tone DRU, M3 may be less than or equal to 4.

[0284] As another example, when the DRU size is 242-tone DRU, M3 may be less than or equal to 2. For description of the resources corresponding to the first user, reference may be made to the above description of 20 MHz, or to Table 2, or to the subcarrier planning shown above, which will not be described in detail here.

[0285] 302. The STA parses the PPDU.

[0286] Exemplarily, the STA may learn the corresponding resources through the preamble in the PPDU.

[0287] FIG4a is a flow chart of a communication method provided by an embodiment of the present application. FIG4a is an example of a first communication device being an STA and a second communication device being an AP. As shown in FIG4a , the method includes:

[0288] 401. STA determines the target resource.

[0289] As an example, the STA can obtain the information of the target resource through the trigger frame sent by the AP. As shown in Figure 4b, the AP can send a trigger frame, such as the trigger frame may include resource scheduling and other parameters (such as association identifier, coding and modulation strategy, etc.) for one or more users (stations) to send uplink data. After receiving the trigger frame, the STA can obtain the common information field and the special user information field, and parse out the user information field that matches its own identifier. The STA can then send the PPDU to the DRU or DMRU indicated by the resource unit allocation subfield in the user information field. Exemplarily, after the AP receives the PPDU sent by one or more stations, it can send a multi-STA block acknowledgement (MBA) frame.

[0290] As another example, the STA may determine the target resource information through channel competition. For example, after the STA obtains the transmission right through channel competition, it may perform uplink data transmission, for example, by grabbing the channel based on enhanced distributed channel access (EDCA). The embodiments of the present application do not limit the specific method for determining the target resource.

[0291] 402. The STA sends a PPDU on the target resource, and correspondingly, the AP receives the PPDU on the target resource.

[0292] For the method shown in FIG4a, please refer to FIG3 and will not be described in detail here. For the relevant description of the target resources, please refer to Table 3 or the subcarrier planning shown above and will not be described in detail here. For example, please refer to the description of the resources corresponding to the first user in Table 3.

[0293] The following describes how the first communication device sends a PPDU and how the second communication device receives the PPDU.

[0294] For the data field of a PPDU, the generation method for data subcarriers in the data field may include at least one of the following: pre-forward error correction PHY padding (pre-FEC PHY padding), scrambling, low-density parity check (LDPC) coding (for example only), post-forward error correction PHY padding (post-FEC PHY padding), stream parsing, constellation mapping, LDPC subcarrier mapping, stream cyclic shifting, spatial and frequency mapping, inverse discrete Fourier transform, cyclic prefix insertion and windowing, and analog and RF. The functions of the above steps are exemplarily described below. For specific functions, please refer to relevant standards or protocols. For example, pre-FEC PHY padding: bits are used to fill the predetermined boundaries before encoding. Scrambling: bits are scrambled to increase bit randomness and prevent the occurrence of consecutive 0s or 1s. LDPC coding: LDPC coding is performed. Post-FEC PHY padding: This padding is performed after encoding to reach the required number of bits for the total bit count, but it is not involved in the encoding. Stream parsing: The bit stream is assigned to different spatial streams and further processed according to each stream. Constellation mapping: The bits are mapped to different constellation points. LDPC subcarrier mapping: Ensures that the LDPC constellation points are separated by a sufficient distance in the frequency domain. Stream cyclic shifting: Different phase rotations are multiplied on different spatial streams to prevent unintentional beamforming. Spatial and frequency mapping: The bits of different users are mapped to different spatial streams and different subcarriers in the frequency domain.

[0295] Figure 5a is a schematic diagram of a process for sending PPDU provided by an embodiment of the present application. As shown in Figure 5a, scrambling can be implemented by a scrambler, LDPC coding can be implemented by an encoder, stream parsing can be implemented by a stream parser, constellation mapping can be implemented by a constellation mapper, LDPC subcarrier mapping can be implemented by an LDPC tone mapper, and stream cyclic shift can be implemented by (CSD per SS). Optionally, before forward error correction (FEC) (pre-FEC as shown in Figure 5a), the first communication device can also perform PHY padding. Optionally, after FEC (post-FEC as shown in Figure 5a), the first communication device can also perform PHY padding. The steps before the space and frequency mapping shown in Figure 5a can be understood as the process of generating data subcarriers corresponding to the data field. The signal carried by the pilot subcarrier can be determined based on the number of pilot subcarriers and the pilot value.

[0296] Exemplarily, the first communication device may perform space-frequency mapping based on the index of the pilot subcarrier, the index of the data subcarrier, and the like. For example, the first communication device may fill in the corresponding position with the signal carried by the pilot subcarrier based on the index of the pilot subcarrier, and fill in the corresponding position with the value carried by the data subcarrier based on the index of the data subcarrier. The first communication device may also fill in the corresponding position with the relevant value based on the index of the DC subcarrier and the index of the guard subcarrier.

[0297] For the data field of the PPDU, the decoding method of the data subcarrier in the data field may include at least one of the following: analog and radio frequency, removal of cyclic prefix, discrete Fourier transform, pilot processing, channel estimation, channel equalization, deinterleaving, deconstellation, LDPC decoding, descrambling, etc. Figure 5b is a schematic diagram of a process for receiving a PPDU provided in an embodiment of the present application. The way in which the second communication device receives the PPDU may be the inverse process of sending the PPDU, so the functions of each module involved in Figure 5b are not listed one by one. Exemplarily, the process of receiving the PPDU may include at least one of the following modules: analog and radio frequency, removal of GI, discrete Fourier transform (DFT), spatial and frequency demapping, segmented parsing, LDPC subcarrier demapping, constellation point demapping, segmented inverse parsing, spatial stream inverse parsing, LDPC decoding, and descrambling. As shown in Figure 5b, deinterleaving can be achieved by a deinterleaver, deconstellation can be achieved by a constellation demapper, LDPC decoding can be achieved by a deencoder, and descrambling can be achieved by a descrambler. The functions of each step can be referred to the relevant standards or protocols and will not be described in detail here.

[0298] The following describes a communication device according to an embodiment of the present application.

[0299] The present application divides the functional modules of the communication device according to the above-mentioned method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in this application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The communication device of the embodiment of the present application will be described in detail below with reference to Figures 6 to 8.

[0300] Figure 6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 6, the communication device includes a processing module 601 and a transceiver module 602. The transceiver module 602 can implement corresponding communication functions, and the processing module 601 is used to implement corresponding processing functions. For example, the transceiver module 602 can also be referred to as an interface, a communication interface, or a communication module.

[0301] In some embodiments of the present application, the communication device may be used to perform the actions performed by the first communication device in the above method embodiments. In this case, the first communication device may be the Wi-Fi device itself, or a chip or functional module configurable in the device. The transceiver module 602 is used to perform the transceiver-related operations of the first communication device in the above method embodiments, and the processing module 601 is used to perform the processing-related operations of the first communication device in the above method embodiments.

[0302] Exemplarily, the processing module 601 may be configured to generate a PPDU, and the transceiver module 602 may be configured to transmit or output the PPDU on a first bandwidth. For details on subcarrier planning corresponding to the first bandwidth, refer to the above.

[0303] Exemplarily, the processing module 601 may include at least one of the following modules: a constellation mapping module, a stream cyclic shift module, a space and frequency mapping module, an IDFT module, a cyclic prefix insertion and windowing module. Exemplarily, the transceiver module 602 may include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 602 may include a pin module, etc.

[0304] Referring to Figure 6 , in some other embodiments of the present application, the communication device can be used to perform the actions performed by the second communication device in the above method embodiments. In this case, the communication device can be the Wi-Fi device itself, or a chip or functional module configurable in the device. The transceiver module 602 is used to perform the transceiver-related operations of the second communication device in the above method embodiments, and the processing module 601 is used to perform the processing-related operations of the second communication device in the above method embodiments.

[0305] For example, the transceiver module 602 may be configured to receive or input a PPDU on a first bandwidth, and the processing module 601 may parse the PPDU. For details on subcarrier planning corresponding to the first bandwidth, refer to the above.

[0306] Exemplarily, the processing module 601 may include at least one of the following components: a cyclic prefix removal module, a DFT module, a deinterleaving module, a constellation deconstruction module, and a descrambling module. Exemplarily, the transceiver module 602 may include a radio frequency module, an antenna module, etc. Exemplarily, the transceiver module 602 may include a pin module, etc.

[0307] Optionally, in each of the above embodiments, the communication device may further include a storage module, which may be used to store instructions and / or data. The processing module 601 may read the instructions and / or data in the storage module to enable the communication device to implement the above method embodiments. Exemplarily, the storage module may store the subcarrier planning shown above, etc.

[0308] In the above embodiments, for the specific description of each term or step, please refer to the introduction in the above method embodiment, and will not be described in detail here.

[0309] The specific descriptions of the transceiver module and the processing module shown in the above embodiments are only examples. For the specific functions or execution steps of the transceiver module and the processing module, please refer to the above method embodiments and will not be described in detail here.

[0310] The above describes the communication device according to the embodiment of the present application. The following describes possible product forms of the communication device. Any product having the functions of the communication device described in FIG6 above falls within the scope of protection of the embodiment of the present application. The following description is for illustrative purposes only and does not limit the product forms of the communication device according to the embodiment of the present application to these examples.

[0311] In one possible implementation, in the communication device shown in Figure 6, processing module 601 may be one or more processors, and transceiver module 602 may be a transceiver. Alternatively, transceiver module 602 may be a transmitting module and a receiving module, where the transmitting module may be a transmitter and the receiving module may be a receiver, with the transmitting module and receiving module being integrated into a single device, such as a transceiver. In embodiments of the present application, the processor and transceiver may be coupled, and the connection method between the processor and transceiver is not limited in embodiments of the present application. During the execution of the above-described method, the process of sending information in the above-described method may be the process of the processor outputting the above-described information. When outputting the above-described information, the processor outputs the above-described information to the transceiver for transmission by the transceiver. After being output by the processor, the above-described information may require further processing before reaching the transceiver. Similarly, the process of receiving information in the above-described method may be the process of the processor receiving the above-described information as input. When the processor receives the input information, the transceiver receives the above-described information and inputs it into the processor. Furthermore, after the transceiver receives the above-described information, the above-described information may require further processing before being input into the processor.

[0312] As shown in FIG. 7 , the communication device 70 includes one or more processors 720 and a transceiver 710 .

[0313] In some embodiments of the present application, the communication device may be configured to execute the steps, methods, or functions performed by the first communication device described above. For example, the processor 720 may be configured to execute the functions or steps implemented by the processing module 601 shown in FIG6 , and the transceiver 710 may be configured to execute the functions or steps implemented by the transceiver module 602 shown in FIG6 . For detailed descriptions of the processor 720 and the transceiver 710, reference may be made to FIG6 or the method embodiments shown above and will not be described in detail here.

[0314] In other embodiments of the present application, the communication device is used to execute the steps, methods, or functions performed by the second communication device described above. For example, the processor 720 can be used to execute the functions or steps implemented by the processing module 601 shown in Figure 6, and the transceiver 710 can be used to execute the functions or steps implemented by the transceiver module 602 shown in Figure 6. For detailed descriptions of the processor 720 and the transceiver 710, please refer to Figure 6 or the method embodiments shown above and will not be described in detail here.

[0315] In various implementations of the communication device shown in FIG7 , the transceiver may include a receiver and a transmitter, wherein the receiver is configured to perform a receiving function (or operation) and the transmitter is configured to perform a transmitting function (or operation). The transceiver is configured to communicate with other devices / devices via a transmission medium.

[0316] Optionally, the communication device 70 may further include one or more memories 730 for storing program instructions and / or data. The memory 730 is coupled to the processor 720. The coupling in the embodiment of the present application is an indirect coupling or communication connection between the communication devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between the communication devices, units or modules. The processor 720 may operate in conjunction with the memory 730. The processor 720 may execute program instructions stored in the memory 730. Optionally, at least one of the one or more memories may be included in the processor.

[0317] The specific connection medium between the transceiver 710, processor 720, and memory 730 is not limited in the embodiments of the present application. In Figure 7, the memory 730, processor 720, and transceiver 710 are connected via a bus 740. The bus is represented by a bold line in Figure 7. The connection methods between other components are merely schematic and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 7 only uses a single bold line, but this does not mean that there is only one bus or only one type of bus.

[0318] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor, etc.

[0319] In the embodiment of the present application, memory may include but is not limited to non-volatile memories such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM) or portable read-only memory (CD-ROM), etc. Memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures, and can be read and / or written by a computer (such as the communication device shown in the present application), but is not limited thereto. The memory in the embodiment of the present application can also be a circuit or other arbitrarily capable of realizing a storage function, for storing program instructions and / or data.

[0320] The processor 720 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process software program data. The memory 730 is primarily used to store software programs and data. The transceiver 710 may include control circuitry and an antenna. The control circuitry is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.

[0321] When the communication device is powered on, the processor 720 can read the software program in the memory 730, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 720 performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 720. The processor 720 converts the baseband signal into data and processes the data.

[0322] In another implementation, the RF circuit and antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be remotely arranged independent of the communication device.

[0323] The communication device shown in the embodiment of the present application may also have more components than those in Figure 7, and the embodiment of the present application is not limited to this. The method performed by the processor and transceiver shown above is only an example. For the specific steps performed by the processor and transceiver, please refer to the method described above.

[0324] In another possible implementation, in the communication device shown in FIG6 , the processing module 601 may be one or more logic circuits, and the transceiver module 602 may be an input / output interface, or may be called a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver module 602 may be a sending module and a receiving module, the sending module may be an output interface, the receiving module may be an input interface, and the sending module and the receiving module are integrated into one module, such as an input / output interface. As shown in FIG8 , the communication device shown in FIG8 includes a logic circuit 801 and an interface 802. That is, the processing module 601 may be implemented using a logic circuit 801, and the transceiver module 602 may be implemented using an interface 802. The logic circuit 801 may be a chip, a processing circuit, an integrated circuit, or a system on chip (SoC) chip, etc., and the interface 802 may be a communication interface, an input / output interface, a pin, etc. For example, FIG8 is illustrated using the communication device as a chip, and the chip includes a logic circuit 801 and an interface 802.

[0325] In the embodiment of the present application, the logic circuit and the interface may also be coupled to each other. The embodiment of the present application does not limit the specific connection method of the logic circuit and the interface. For example, the logic circuit 801 can be used to perform the functions or steps implemented by the processing module 601 shown in Figure 6, and the interface 802 can be used to perform the functions or steps implemented by the transceiver module 602 shown in Figure 6. For a specific description of the logic circuit 801 and the interface 802, please refer to Figure 6 or the method embodiment shown above, and will not be described in detail here.

[0326] The communication device shown in the embodiment of the present application can implement the method provided in the embodiment of the present application in the form of hardware, or can implement the method provided in the embodiment of the present application in the form of software, etc., and the embodiment of the present application is not limited to this.

[0327] An embodiment of the present application further provides a communication system, which includes a first communication device and a second communication device. The first communication device and the second communication device can be used to execute the method in any of the aforementioned embodiments.

[0328] In addition, the present application also provides a computer program, which is used to implement the operations and / or processing performed by each communication device in the method provided by the present application.

[0329] The present application also provides a computer-readable storage medium having computer code stored therein. When the computer code is run on a computer, the computer executes the operations and / or processing performed by each communication device in the method provided by the present application.

[0330] The present application also provides a computer program product, which includes computer code or computer program. When the computer code or computer program is run on a computer, the operations and / or processes performed by the method provided in the present application are executed.

[0331] In the several embodiments provided in this application, it should be understood that the disclosed systems, communication devices, and methods can be implemented in other ways. For example, the communication device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, communication devices or modules, or can be electrical, mechanical or other forms of connection.

[0332] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.

[0333] In addition, the functional modules in the various embodiments of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The above-mentioned integrated modules may be implemented in the form of hardware or software functional modules.

[0334] If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0335] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that, The method includes: Generating a Physical Layer Protocol Data Unit (PPDU); Transmitting the PPDU on a first bandwidth, where the subcarrier allocation corresponding to the first bandwidth includes M Distributed Resource Units (DRUs), each DRU includes 26 subcarriers, and M is a positive integer; The subcarrier allocation satisfies: For some or all of the subcarriers in M1 of the M DRUs, every x subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M1 DRUs belong to a first DRU, the first DRU is one of the M1 DRUs, and the first DRU includes a plurality of non - consecutive subcarriers with index values, where x < M1; For some subcarriers in M2 of the M DRUs, every y subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M DRUs belong to a second DRU, the second DRU is one of the M2 DRUs, the index values between the some subcarriers in the second DRU are non - consecutive, the DRUs in the M1 DRUs do not overlap with the DRUs in the M2 DRUs, M1 and M2 are both positive integers, and x + M2 < y.

2. A communication method, characterized in that, The method includes: Receiving a Physical Layer Protocol Data Unit (PPDU) on a first bandwidth, where the subcarrier allocation corresponding to the first bandwidth includes M Distributed Resource Units (DRUs), each DRU includes 26 subcarriers, and M is a positive integer; Parsing the PPDU; The subcarrier allocation satisfies: For some or all of the subcarriers in M1 of the M DRUs, every x subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M1 DRUs belong to a first DRU, the first DRU is one of the M1 DRUs, and the first DRU includes a plurality of non - consecutive subcarriers with index values, where x < M1; For some subcarriers in M2 of the M DRUs, every y subcarriers in the order from low frequency to high frequency among the subcarriers corresponding to the M DRUs belong to a second DRU, the second DRU is one of the M2 DRUs, the index values between the some subcarriers in the second DRU are non - consecutive, the DRUs in the M1 DRUs do not overlap with the DRUs in the M2 DRUs, M1 and M2 are both positive integers, and x + M2 < y.

3. The method according to claim 1 or 2, characterized in that, The number of subcarriers belonging to the second DRU within a first unit window is greater than the number of subcarriers belonging to the second DRU within a second unit window. Both the first unit window and the second unit window include n consecutive subcarriers with index values. The lowest - frequency subcarrier in the first unit window is different from the lowest - frequency subcarrier in the second unit window, and the highest - frequency subcarrier in the first unit window is different from the highest - frequency subcarrier in the second unit window.

4. The method according to any one of claims 1 to 3, characterized in that Among the remaining subcarriers in the M2 DRUs except for the some subcarriers in the M2 DRUs, there are multiple consecutive subcarriers belonging to the second DRU.

5. The method according to any one of claims 1 to 4, characterized in that, Some subcarriers in the remaining subcarriers of the M2 DRUs except the some subcarriers in the M2 DRUs, in the subcarriers corresponding to the M DRUs, every z subcarriers in the order from low frequency to high frequency belong to the second DRU, z <y。 6. The method according to any one of claims 1-5, characterized in that, For some subcarriers in the M2 DRUs, a maximum number of subcarriers spaced between two adjacent non-target subcarriers in order from low frequency to high frequency of the subcarriers corresponding to the M DRUs is 12.

7. The method according to any one of claims 1-6, characterized in that, When the first bandwidth is 20 MHz, y is an integer greater than 8; or when the first bandwidth is 40 MHz, y is an integer greater than 18.

8. The method according to any one of claims 1-7, characterized in that, The index value of any of the following subcarriers does not overlap with the index value of the subcarrier of the M1 DRUs, and does not overlap with the index value of the part of the subcarriers in the M2 DRUs: The index value of the protection subcarrier, the index value of the DC subcarrier, the index value of the empty subcarrier, and the index value of the remaining subcarriers in the M2 DRUs except for the part of the subcarriers in the M2 DRUs.

9. A communication device, characterized in that, The method comprises a module for executing the method according to any one of claims 1 to 8.

10. A communication device, characterized in that, The method comprises a processor configured to execute the method according to any one of claims 1 to 8.

11. A communication device, characterized in that, comprising a logic circuit and an interface, wherein the logic circuit and the interface are coupled; The interface is used to input and / or output information, and the logic circuit is used to execute the method according to any one of claims 1-8.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program. When the computer program is executed, the method according to any one of claims 1 to 8 is executed.

13. A computer program product, characterized in that, When the computer program product is executed, the method according to any one of claims 1 to 8 is performed.

14. A communication system, characterized in that, The communication system comprises a first communication device and a second communication device, wherein the first communication device is used to execute the method according to any one of claims 1 and 3-8, and the second communication device is used to execute the method according to any one of claims 2-8.

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