Long training ground sequence design for distributed tone resource units over wider bandwidth in wireless communications

Abstract

Various schemes are described for long training field (LTF) sequence design for distributed tone resource units (DRUs) for wider bandwidth in wireless communications. A device (e.g., a working station (STA)) generates a DRU LTF sequence of a DRU using a predefined DRU LTF base sequence. The device transmits the DRU LTF sequence of the DRU in wireless communications of a bandwidth of 160 MHz or more.

Description

[0001] Cross-referencing

[0002] This disclosure is part of a non-provisional patent application claiming priority to U.S. Provisional Patent Application No. 63 / 510,154, filed June 26, 2023, the entire contents of which are incorporated herein by reference. [Technical Field]

[0003] This disclosure generally relates to wireless communications, and more specifically to long training field (LTF) sequence design techniques for distributed tone resource units (DRUs) with wider bandwidth in wireless communications. [Background Technology]

[0004] Unless otherwise stated herein, the methods described in this section are not considered prior art to the following claims, nor are they admitted as prior art by virtue of their inclusion in this section.

[0005] In wireless communications, such as wireless local area networks (WLANs) or Wi-Fi (or wireless networks) conforming to one or more Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards, the use of distributed-tone resource units (DRUs) has been proposed to improve the transmission power of 6 GHz low-power indoor (LPI) systems. In addition to distributing tones over 20 MHz, 40 MHz, and 80 MHz bandwidths, significant power gains can be achieved by distributing tones over wider bandwidths (such as 160 MHz and 320 MHz). At the time of this invention, how to generate and transmit long-training field (LTF) sequences based on an 80 MHz DRU tone plan has not been defined or specified. Therefore, a solution is needed for designing LTF sequences for wider bandwidth DRUs in wireless communications. [Summary of the Invention]

[0006] The following summary is for illustrative purposes only and is not intended to be limiting in any way. That is, the summary aims to introduce the concepts, highlights, benefits, and advantages of the novel and non-obvious techniques described herein. Selected embodiments will be further illustrated in the detailed description below. Therefore, the following summary is not intended to identify the essential features of the claimed subject matter, nor is it intended to determine the scope of the claimed subject matter.

[0007] One objective of this disclosure is to provide schemes, concepts, designs, techniques, methods, and apparatus related to the design of LTF sequences for wider bandwidth DRUs in wireless communication. Under the various proposed schemes described herein, an 80MHz DRU tone scheme can serve as a fundamental building block for the design of wider bandwidth (e.g., 160MHz and 320MHz) DRU tone schemes, and the generation and transmission of LTF sequences can be based on 80MHz DRU LTF sequences. It is believed that implementation of the proposed schemes can solve or mitigate the aforementioned problems.

[0008] In one aspect, a method may involve generating a DRU LTF of a DRU using a predefined DRU LTF base sequence. The method may also involve transmitting the DRU LTF sequence of the DRU in a wireless communication with a bandwidth of 160 MHz or greater.

[0009] In another aspect, an apparatus may include a transceiver and a processor coupled to the transceiver. The transceiver may be configured to wirelessly transmit and receive. The processor may be configured to generate a DRU LTF of a DRU using a predefined DRU LTF base sequence. The processor may also transmit the DRU LTF sequence of the DRU in wireless communication with a bandwidth of 160 MHz or greater.

[0010] It is worth noting that although the descriptions provided herein may be made in the context of certain wireless access technologies, networks, and network topologies (such as Wi-Fi), the proposed concepts, schemes, and any variations / derivatives thereof can be implemented, and are implemented, in other types of wireless access technologies, networks, and network topologies, such as, but not limited to, Bluetooth, ZigBee, 5G, and 5G. th This includes 5G / New Radio (NR), LTE, LTE-Advanced, LTE-Advanced Pro, Internet of Things (IoT), Industrial Internet of Things (IIoT), and Narrowband Internet of Things (NB-IoT). Therefore, the scope of this disclosure is not limited to the examples described herein. [Attached Image Description]

[0011] The accompanying drawings are included to provide a further understanding of the present disclosure and form part of it. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. It will be understood that the drawings are not necessarily drawn to scale, as some components may be shown out of proportion to their actual dimensions in order to clearly illustrate the concepts of the present disclosure.

[0012] Figure 1 This is a diagram of an example network environment based on various solutions of this disclosure.

[0013] Figure 2 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0014] Figure 3 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0015] Figure 4 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0016] Figure 5 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0017] Figure 6 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0018] Figure 7 This is a diagram of an example scenario based on an embodiment of the present disclosure.

[0019] Figure 8 This is a diagram of an example scenario based on an embodiment of the present disclosure.

[0020] Figure 9 This is a diagram of an example scenario based on an embodiment of the present disclosure.

[0021] Figure 10 This is a diagram of an example scenario based on an embodiment of the present disclosure.

[0022] Figure 11 This is a diagram of an example scenario based on an embodiment of the present disclosure.

[0023] Figure 12 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0024] Figure 13 This is a diagram of an example scenario based on an embodiment of the present disclosure.

[0025] Figure 14 This is a diagram of an example design based on the proposed scheme of this disclosure.

[0026] Figure 15 This is a block diagram of an example communication system based on the proposed solution of this disclosure.

[0027] Figure 16 This is a flowchart of an example process based on the proposed solution of this disclosure.

Detailed Implementation Methods

[0028] This specification discloses detailed embodiments and implementations of the claimed subject matter. However, it should be understood that the disclosed embodiments and implementations are merely examples of the claimed subject matter and can be embodied in various forms. This disclosure can be embodied in many different forms and should not be construed as being limited to the exemplary embodiments and implementations listed herein. Rather, these exemplary embodiments and implementations are provided to make the description of this disclosure more detailed and complete, and to fully convey the scope of this disclosure to those skilled in the art. In the following description, some well-known features and technical details may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

[0029] Overview

[0030] The implementations of this disclosure relate to various techniques, methods, schemes, and / or solutions related to the design of long training field (LTF) sequences for wideband distributed tone resource units (DRUs) in wireless communications. According to this disclosure, multiple possible solutions can be implemented individually or in combination. That is, although the following possible solutions may be described individually, two or more of these solutions may be implemented in some combination or other manner.

[0031] It is worth noting that, in this disclosure, a regular resource unit (RRU) refers to a resource unit having consecutive tones (e.g., adjacent to each other) that are not interleaved, overlapping, or otherwise distributed. Furthermore, a 26-tone regular resource unit can be interchangeably represented as RU26 (or RRU26), a 52-tone regular resource unit can be interchangeably represented as RU52 (or RRU52), a 106-tone regular resource unit can be interchangeably represented as RU106 (or RRU106), a 242-tone regular resource unit can be interchangeably represented as RU242 (or RRU242), and so on. Additionally, a converged (26+52)-tone regular multi-resource unit (MRU) can be interchangeably represented as MRU78 (or RMRU78), a converged (26+106)-tone regular MRU can be interchangeably represented as MRU132 (or RMRU132), and so on. Furthermore, a distributed-tone resource unit (DRU) refers to a resource unit that has discontinuous tones (e.g., not adjacent to each other) and is interleaved, intertwined, or otherwise distributed. Therefore, a 26-tone distributed-tone resource unit can be interchangeably represented as DRU26, a 52-tone distributed-tone resource unit as DRU52, a 106-tone distributed-tone resource unit as DRU106, a 242-tone distributed-tone resource unit as DRU242, a 484-tone distributed-tone resource unit as DRU484, a 996-tone distributed-tone resource unit as DRU996, a 2x996-tone distributed-tone resource unit as DRU2x996, and so on.

[0032] It is worth noting that, in this disclosure, a 20MHz bandwidth can be interchangeably represented as BW20 or BW20M, a 40MHz bandwidth can be interchangeably represented as BW40 or BW40M, an 80MHz bandwidth can be interchangeably represented as BW80 or BW80M, a 160MHz bandwidth can be interchangeably represented as BW160 or BW160M, a 240MHz bandwidth can be interchangeably represented as BW240 or BW240M, and a 320MHz bandwidth can be interchangeably represented as BW20 or BW20M. The bandwidth of 480MHz can be represented as BW320 or BW320M, 500MHz as BW500 or BW500M, 520MHz as BW520 or BW520M, 540MHz as BW540 or BW540M, and 640MHz as BW640 or BW640M.

[0033] Figure 1An example network environment 100 is shown, in which various solutions and schemes can be implemented according to this disclosure. Figures 2 to 16 Examples of various proposed schemes implemented in network environment 100 according to this disclosure are shown. The following, in conjunction with... Figures 1 to 16 Describe the various proposed solutions.

[0034] See Figure 1 Network environment 100 may involve at least one work station (STA) 110 wirelessly communicating with one STA 120. Either STA 110 or STA 120 can act as an access point (AP) STA or as a non-AP STA. In some cases, STA 110 and STA 120 may be associated with a basic service set (BSS) conforming to one or more IEEE 802.11 standards (e.g., IEEE 802.11be and / or future standards such as IEEE 802.11bn). Each of STA 110 and STA 120 can be configured to communicate with each other via a wideband distributed tone resource unit (DRU) long training field (LTF) sequence design utilizing various proposed schemes described below. That is, one or both of STA 110 and STA 120 can operate as a "user" in the proposed schemes and examples described below. It is worth noting that although various proposed schemes may be described individually or separately below, in actual implementations, some or all of the proposed schemes may be jointly utilized or otherwise implemented together. Of course, each proposed solution can also be used or implemented individually or separately.

[0035] Figure 2 An example design 200 is shown according to the proposed scheme of this disclosure. Under this proposed scheme, the LTF sequence of an 80MHz DRU (e.g., the IEEE 802.11bn 80MHz subblock base sequence) can be used to design DRU LTF sequences with wider bandwidths. For example, the 80MHz DRU LTF sequence as a base sequence (denoted here as "dLTF80") can be modified and used for wider bandwidths (e.g., 160MHz and 320MHz), as well as other wider bandwidths. Reference Figure 2 Under this proposed scheme, certain tones with a value of "0" in the LTF sequence of an 80MHz DRU can be replaced with "+1" or "-1" when generating a wider bandwidth DRU LTF sequence.

[0036] Figure 3An example design 300 according to the proposed scheme of this disclosure is shown. Under this proposed scheme, the LTF base sequence of an 80MHz DRU can be considered as including the left and right halves of the LTF base sequence, such as... Figure 3 As shown. Therefore, the left half of the IEEE 802.11bn 80MHz subblock LTF base sequence can be represented here as "dLTF80_left", and the right half of the IEEE 802.11bn 80MHz subblock LTF base sequence can be represented here as "dLTF80_right". In terms of tone indexing, dLTF80_left = dLTF80(1:498), dLTF80_right = dLTF(499:996). Figure 3 In the diagram, the position marked "x" can be replaced with + / -1, and can be optimized to minimize or reduce the peak-to-average power ratio (PAPR).

[0037] Figure 4 An example design 400 based on the proposed scheme of this disclosure is shown. Under this proposed scheme, a basic idea in the general considerations for designing wider bandwidth DRU LTF sequences is to use the base sequences dLTF80_left and dLTF80_right as basic building blocks. For example, a wider bandwidth DRU LTF sequence can be constructed as follows: Figure 4 One of the combinations shown. Combination coefficients C1, C2, C3, C4, C5, C6, C7, C8, C9, C 10 C 11 and C 12 PAPR for all DRU sizes can be minimized through search optimization. For example, a 160MHz DRU LTF sequence (denoted here as "dLTF160") can be represented as dLTF160 = [C1*dLTF80_leftO5, C2*dLTF80_rightO5]. 23 [C1*dLTF80_leftO5,C4*dLTF80_right]. Furthermore, a 320MHz DRU LTF sequence (represented here as "dLTF320") can be expressed as dLTF320=[C1*dLTF80_leftO5,C2*dLTF80_rightO5]. 23 ,C3*dLTF80_leftO5,C4*dLTF80_right O23,C5*dLTF80_leftO5,C6*dLTF80_rightO 23[C7*dLTF80_leftO5,C8*dLTF80_right]. Furthermore, a 240MHz DRU LTF sequence (represented here as "dLTF240") can be represented as dLTF240=[C1*dLTF80_leftO5,C2*dLTF80_rightO5]. 23 [C3*dLTF80_leftO5,C4*dLTF80_rightO23,C5*dLTF80_leftO5,C6*dLTF80_right]. Furthermore, a 480MHz DRU LTF sequence (represented here as "dLTF480") can be expressed as dLTF480=[C1*dLTF80_leftO5,C2*dLTF80_rightO23,C5*dLTF80_leftO5,C6*dLTF80_rightO23]. 23 ,C3*dLTF80_leftO5,C4*dLTF80_right,O23,C5*dLTF80_leftO5,C6*dLTF80_rightO 23 ,C7*dLTF80_leftO5,C8*dLTF80_right O23,C9*dLTF80_leftO5,C 10 *dLTF80_rightO 23 C 11 *dLTF80_leftO5,C 12 *dLTF80_right]. Here, each optimization coefficient C1, C2, C3, C4, C5, C6, C7, C8, C9, C 10 C 11 and C 12 The value can be -1 or +1. Furthermore, in the above expression, "05" represents five consecutive 0s, and "0" represents... 23 "" indicates twenty-three consecutive zeros. The optimization factor can be selected to achieve the minimum PAPR for LTF and data tone for all DRU types / sizes in a wider bandwidth (e.g., 160MHz, 240MHz, 320MHz, or 480MHz) under the recommended scheme.

[0038] Figure 5 An example design 500 is shown based on the proposed scheme of this disclosure. Design 500 may be related to a wider bandwidth DRU LTF sequence design under Option-1. Figure 5 As shown, Figure 3 Each position marked "x" is replaced with + / -1 by searching to minimize the PAPR result.

[0039] Figure 6An example design 600 is shown according to the proposed scheme of this disclosure. Under the proposed scheme, dLTF160 = [C1*dLTF80_leftO5,C2*dLTF80_rightO5]. 23 ,C3*dLTF80_leftO5,C4*dLTF80_right], where C=[C1 C2 C3 C4]=[1 1 1 -1]. Furthermore, under the proposed scheme, dLTF320=[C1*dLTF80_leftO5,C2*dLTF80_rightO] 23 ,C3*dLTF80_leftO5,C4*dLTF80_right O23,C5*dLTF80_leftO5,C6*dLTF80_rightO 23 [C7*dLTF80_leftO5,C8*dLTF80_right], where C=[C1 C2 C3 C4 C5 C6 C7 C8]=[1 1-1 -1 1 -1 1 -1]. Here, vector C can contain combinations of optimization coefficients, where "05" represents five consecutive 0s, and "0" represents five consecutive 0s. 23 "" indicates twenty-three consecutive zeros.

[0040] Figure 7 An example scenario 700 according to one embodiment of this disclosure is shown. Scenario 700 may involve PAPR performance for a DRU LTF with a wider bandwidth of 160MHz.

[0041] Figure 8 An example scenario 800 according to one embodiment of this disclosure is illustrated. Scenario 800 may relate to PAPR performance for a DRU LTF with a wider bandwidth of 320MHz.

[0042] Figure 9 An example scenario 900 according to one embodiment of this disclosure is illustrated. Scenario 900 may relate to PAPR performance for a DRU LTF with an 80MHz bandwidth.

[0043] Figure 10 An example scenario 1000 according to one embodiment of this disclosure is illustrated. Scenario 1000 may involve a PAPR performance comparison for DRU LTFs with bandwidths of 80MHz, 160MHz, and 320MHz.

[0044] Figure 11 An example scenario 1100 according to one embodiment of this disclosure is illustrated. Scenario 1100 may involve a PAPR performance comparison for DRU LTFs with bandwidths of 80MHz, 160MHz, and 320MHz.

[0045] Figure 12 An example design 1200 is shown based on the proposed scheme of this disclosure. Design 1200 may involve the design of a DRU LTF sequence for a wider bandwidth under a second option (Option-2). Figure 12 As shown, Figure 3 Each position marked "x" is replaced with + / -1 as the search minimizes PAPR. According to design 1200, dLTF160 = [C1*dLTF80_leftO5, C2*dLTF80_rightO5]. 23 ,C3*dLTF80_leftO5,C4*dLTF80_right], where C=[C1 C2 C3 C4]=[1 1 1 -1], which may be the same as the RRU LTF on 160MHz.

[0046] Figure 13 An example scenario 1300 according to one embodiment of this disclosure is shown. Scenario 1300 may involve PAPR performance for a DRU LTF with a wider bandwidth of 160MHz under Option-2.

[0047] Figure 14 An example design 1400 is shown according to the proposed scheme of this disclosure. Design 1400 may involve DRU LTF transmission using a two-step process. Under the proposed scheme, a DRU LTF sequence for a wider bandwidth can be generated by reusing the LTF sequence of an 80MHz DRU (i.e., the 80MHz DRULTF base sequence). It is worth noting that the 80MHz DRU LTF base sequence may need to be modified to transmit a 996-tone DRU. Certain “0” positions in the tone scheme of dLTF80 may need to be replaced with + / -1 through search and optimization to minimize PAPR. In the first step of the two-step process, a subsequence can be extracted from dLTF80 using the 80MHz DRU index. In the second step of the two-step process, the extracted subsequence can be mapped to a 160MHz DRU LTF transmission based on the corresponding 160MHz DRU tone index or subcarrier index.

[0048] Example Implementation

[0049] Figure 15An example system 1500 according to an embodiment of the present disclosure is shown, the system having at least one example device 1510 and one example device 1520. Each of devices 1510 and 1520 can perform various functions to implement the schemes, techniques, processes, and methods described herein related to the design of LTF sequences for wider bandwidth DRUs in wireless communications, including the various schemes described above with respect to various proposed designs, concepts, schemes, systems, and methods, as well as the processes described below. For example, device 1510 may be an example implementation of communication entity 110, and device 1520 may be an example implementation of communication entity 120.

[0050] Devices 1510 and 1520 can be part of an electronic device, which can be a STA or AP, such as a portable or mobile device, wearable device, wireless communication device, or computing device. For example, devices 1510 and 1520 can be implemented in a smartphone, smartwatch, personal digital assistant, digital camera, or computing device such as a tablet, laptop, or notebook computer. Devices 1510 and 1520 can also be part of a machine-type device, which can be an IoT device, such as a fixed or stationary device, home appliance, wired communication device, or computing device. For example, devices 1510 and 1520 can be implemented in a smart thermostat, smart refrigerator, smart door lock, wireless speaker, or home control center. When implemented in or as a network device, devices 1510 and / or 1520 can be implemented in a network node, such as an AP in a WLAN.

[0051] In some implementations, devices 1510 and 1520 may be implemented as one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction-set computing (RISC) processors, or one or more complex-instruction-set computing (CISC) processors. In all the above-described embodiments, devices 1510 and 1520 may be implemented as a STA or AP. Devices 1510 and 1520 may include... Figure 15 At least some components are shown, such as processor 1512 and processor 1522. Devices 1510 and 1520 may also include one or more other components unrelated to the proposed solutions of this disclosure (e.g., internal power supply, display device, and / or user interface device), therefore, for simplicity and brevity, these components are not listed. Figure 15 It is shown in the text and not described below.

[0052] In one aspect, processors 1512 and 1522 may be implemented as one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, although the singular term "processor" is used herein to refer to processors 1512 and 1522, in some implementations processors 1512 and 1522 may include multiple processors, while in other implementations a single processor. On the other hand, processors 1512 and 1522 may be implemented in hardware (and optionally, firmware) comprising, for example, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more transformers, these components being configured and arranged to achieve a particular purpose according to this disclosure. In other words, in at least some implementations, processors 1512 and 1522 are special-purpose machines specifically designed, arranged, and configured to perform a particular task, including LTF sequence designs for broadband DRUs in wireless communications associated with various implementations of this disclosure. For example, processors 1512 and 1522 may be configured with hardware components or circuitry that implement one, some, or all of the examples described and illustrated herein.

[0053] In some implementations, device 1510 may further include a transceiver 1516 coupled to processor 1512. Transceiver 1516 can wirelessly transmit and receive data. In some implementations, device 1520 may further include a transceiver 1526 coupled to processor 1522. Transceiver 1526 may include a transceiver capable of wirelessly transmitting and receiving data.

[0054] In some implementations, device 1510 may further include memory 1514 coupled to processor 1512 and capable of being accessed by processor 1512 and storing data. In some implementations, device 1520 may further include memory 1524 coupled to processor 1522 and capable of being accessed by processor 1522 and storing data. Memory 1514 and memory 1524 may include a random access memory (RAM), such as dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM), and / or zero-capacitor RAM (Z-RAM). Alternatively, memory 1514 and memory 1524 may include a read-only memory (ROM), such as mask ROM, programmable ROM (PROM), erasable programmable ROM (EPROM), and / or electrically erasable programmable ROM (EEPROM). Alternatively, memory 1514 and memory 1524 may include a non-volatile random-access memory (NVRAM), such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and / or phase-change memory.

[0055] Devices 1510 and 1520 can be communication entities capable of communicating using various proposed schemes of this disclosure. For illustrative purposes and without limitation, the capabilities of device 1510 as communication entity 110 and device 1520 as communication entity 120 are described below in the context of example procedure 1600. It is worth noting that although the example implementation described below is provided in the context of WLAN, the same implementation can be implemented in other types of networks. Therefore, although the example implementation description below pertains to a scenario where device 1510 is a transmitting device and device 1520 is a receiving device, the same implementation is also applicable to another scenario where device 1510 is a receiving device and device 1520 is a transmitting device.

[0056] Explanatory process

[0057] Figure 16An example process 1600 according to an embodiment of this disclosure is described. Process 1600 may represent one aspect of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, process 1600 may represent one aspect of a proposed concept and scheme related to this disclosure concerning the design of LTF sequences for wider bandwidth DRUs in wireless communication. Process 1600 may include one or more operations, actions, or functions, as shown in one or more blocks 1610 and 1620. Although shown as discrete blocks, the individual blocks of process 1600 may be divided into more blocks, merged into fewer blocks, or eliminated, depending on the desired implementation. Furthermore, the blocks / sub-blocks of process 1600 may be arranged according to... Figure 16 The execution may be performed in the order shown, or in a different order. Furthermore, one or more blocks / subblocks of process 1600 may be executed repeatedly or iteratively. Process 1600 may be implemented by or in devices 1510 and 1520, and any variations thereof. For illustrative purposes only and without limitation, process 1600 is described below in the context of device 1510 as communication entity 110 (e.g., a transmitting device, whether STA or AP) and device 1520 as communication entity 120 (e.g., a receiving device, whether STA or AP), such as in one or more wireless networks (e.g., WLANs) in IEEE 802.11 standards. Process 1600 may begin at block 1610.

[0058] At 1610, process 1600 may involve processor 1512 of device 1510 generating a DRU LTF of a DRU using a predefined DRU LTF base sequence. Process 1600 can proceed from 1610 to 1620.

[0059] At 1620, process 1600 may involve processor 1512 transmitting the DRU LTF sequence of the DRU in wireless communication (e.g., with device 1520) via transceiver 1516 in a bandwidth of 160 MHz or wider.

[0060] In some embodiments, the predefined DRU LTF base sequence may include the IEEE 802.11bn 80MHz DRU LTF base sequence. In some embodiments, when generating the DRU LTF sequence, process 1600 may involve processor 1512 changing each value at multiple positions in the IEEE 802.11bn 80MHz DRU LTF base sequence from 0 to -1 or +1.

[0061] In some embodiments, when generating the DRU LTF sequence, process 1600 may involve processor 1512 generating a DRU LTF sequence (dLTF160) for 160MHz. In this case, dLTF160 = [C1 * dLTF80_leftO5, C2 * dLTF80_rightO5]. 23 [C3*dLTF80_leftO5,C4*dLTF80_right]. Here, dLTF80_left represents the left half of the LTF sequence of the 80MHz DRU; dLTF80_right represents the right half of the LTF sequence of the 80MHz DRU; each value of coefficients C1, C2, C3, and C4 is -1 or +1; 05 represents five consecutive 0s; 0 23 This represents twenty-three consecutive zeros. In some embodiments, vector C = [C1 C2 C3 C4] = [1 1 1 -1].

[0062] In some embodiments, when generating the DRU LTF sequence, process 1600 may involve processor 1512 generating a DRU LTF sequence (dLTF320) for 320MHz. In this case, dLTF320 = [C1 * dLTF80_leftO5, C2 * dLTF80_rightO5]. 23 ,C3*dLTF80_leftO5,C4*dLTF80_rightO 23 ,C5*dLTF80_leftO5,C6*dLTF80_rightO 23 [C7*dLTF80_leftO5,C8*dLTF80_right]. Here, dLTF80_left represents the left half of the LTF sequence of the 80MHz DRU; dLTF80_right represents the right half of the LTF sequence of the 80MHz DRU; each value of coefficients C1, C2, C3, C4, C5, C6, C7, C8 is -1 or +1; 05 represents five consecutive 0s; 0 23 This represents twenty-three consecutive zeros. In some embodiments, vector C = [C1 C2 C3 C4 C5 C6 C7 C8] = [1 1 -1 -1 1 -1 1 -1].

[0063] In some embodiments, when generating the DRU LTF sequence, process 1600 may involve processor 1512 generating a DRU LTF sequence (dLTF240) for 240MHz. In this case, dLTF240 = [C1 * dLTF80_leftO5, C2 * dLTF80_rightO5]. 23,C3*dLTF80_leftO5,C4*dLTF80_rightO 23 [C5*dLTF80_leftO5,C6*dLTF80_right]. Here, dLTF80_left represents the left half of the LTF sequence of the 80MHz DRU; dLTF80_right represents the right half of the LTF sequence of the 80MHz DRU; each value of coefficients C1, C2, C3, C4, C5, C6 is -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

[0064] In some implementations, when generating Distributed Tone Resource Unit (DRU) Long Training Field (LTF) sequences, process 1600 may involve processor 1512 generating a DRU LTF sequence (dLTF480) for 480MHz. In this case, dLTF480 = [C1*dLTF80_leftO5, C2*dLTF80_rightO5]. 23 ,C3*dLTF80_leftO5,C4*dLTF80_right,O 23 ,C5*dLTF80_leftO5,C6*dLTF80_rightO 23 ,C7*dLTF80_leftO5,C8*dLTF80_rightO 23 ,C9*dLTF80_leftO5,C 10 *dLTF80_rightO 23 C 11 *dLTF80_leftO5,C 12 *dLTF80_right]. Here, dLTF80_left represents the left half of the LTF sequence of the 80MHz DRU; dLTF80_right represents the right half of the LTF sequence of the 80MHz DRU; coefficients C1, C2, C3, C4, C5, C6, C7, C8, C9, C 10 C 11 C 12 Each value is either -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

[0065] In some implementations, when generating the DRU LTF sequence, process 1600 may involve processor 1512 generating a 160MHz or wider bandwidth DRU LTF sequence in a two-step process by reusing an 80MHz DRU LTF base sequence (dLTF80), such that: (1) the value at certain positions in dLTF80 changes from 0 to -1 or +1; (2) a subsequence of dLTF80 is obtained using an 80MHz DRU index; and (3) the subsequence is mapped to a 160MHz or wider bandwidth DRU LTF transmission based on the corresponding DRU tone index or subcarrier index.

[0066] Additional Notes

[0067] The topics described herein sometimes demonstrate different components contained within or connected to different other components. It should be understood that the architectures depicted are merely examples, and many other architectures can actually be implemented to achieve the same functionality. Conceptually, any arrangement of components to achieve the same functionality is effectively “associated” to achieve the desired function. Therefore, any two components combined in this document to achieve a particular function can be considered “associated” together to achieve the desired function, regardless of the architecture or intermediate components. Similarly, any two components so associated can also be considered “operably connected” or “operably coupled” together to achieve the desired function, and any two components that can be so associated can also be considered “operably coupled” together to achieve the desired function. Specific examples of being operably coupled include, but are not limited to, physically matable and / or physically interactive components and / or wirelessly interactive components and / or logically interactive and / or logically interactive components.

[0068] Furthermore, regarding the use of virtually any plural and / or singular terms in this document, a person with technical skills can translate from plural to singular and / or from singular to plural depending on the context and / or application. For clarity, various singular / plural permutations may be explicitly listed in this document.

[0069] Furthermore, those skilled in the art will understand that, in general, the terms used in this specification, particularly those used in the appended claims, such as the body portion of the appended claims, should generally be interpreted as “open-ended” terms. For example, the term “comprising” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “at least having,” and the term “including” should be interpreted as “including but not limited to,” etc. Those skilled in the art will also further understand that if a specific quantity is explicitly stated in a claim, that intent will be explicitly stated in the claim; if no such statement is made, then such intent does not exist. For example, for ease of understanding, the appended claims below may contain statements introducing the claims using the introductory phrases “at least one” and “one or more.” However, the use of these phrases should not be construed as implying that a claim statement introduced by the indefinite article "a" or "an" limits any particular claim containing such an introductory claim statement to containing only one such statement, even if the same claim includes the introductory phrase "one or more" or "at least one" and the indefinite article "a" or "an," for example, "a" and / or "an" should be interpreted as "at least one" or "one or more"; the same interpretation applies to the use of definite articles used to introduce claim statements. Furthermore, even if a specific number of claim statements is explicitly stated, those skilled in the art will recognize that such a statement should be interpreted as at least the number stated; for example, the single statement "two statements," without other modifiers, means at least two statements, or two or more statements. Moreover, in the use of conventions such as "at least one A, B, and C," the intent of this structure is generally a convention that those skilled in the art can understand; for example, "a system having at least one A, B, and C" will include, but is not limited to, systems having only A, only B, only C, both A and B, both A and C, both B and C, and systems having both A, B, and C, etc. When using conventions such as "at least one A, B, or C," the intent of this structure is generally a convention that can be understood by those skilled in the art. For example, "a system having at least one A, B, or C" will include, but is not limited to, having only A, only B, only C, having both A and B, having both A and C, having both B and C, and having both A, B, and C. Those skilled in the art will further understand that virtually any extractive term and / or phrase presenting two or more alternative terms, whether in the specification, claims, or drawings, should be understood to include the possibility of including one term, any one term, or both terms. For example, the phrase "A or B" will be understood to include the possibility of "A" or "B" or "A and B."

[0070] As can be seen from the foregoing, various embodiments of this disclosure have been described herein for illustrative purposes, and various modifications may be made without departing from the scope and spirit of this disclosure. Therefore, the various embodiments disclosed herein are not intended to be limiting, and their true scope and spirit are indicated by the following claims.

Claims

1. A method comprising: A long training sequence of distributed tone resource units is generated by a processor of a device using a predefined long training sequence of distributed tone resource units. as well as The processor transmits the long training field sequence of the distributed tone resource unit in wireless communication over a bandwidth of 160MHz or wider.

2. The method of claim 1, wherein the predefined distributed tone resource unit long training field base sequence includes an IEEE 802.11bn 80MHz distributed tone resource unit long training field base sequence.

3. The method of claim 2, wherein generating the distributed tone resource unit long training field sequence includes changing each value at a plurality of positions in the IEEE 802.11bn 80MHz distributed tone resource unit long training field base sequence from 0 to -1 or +1.

4. The method of claim 1, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF160 for 160MHz, and wherein: dLTF160=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; Each of the coefficients C1, C2, C3, and C4 has a value of -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

5. The method of claim 4, wherein a vector C = [C1 C2 C3 C4] = [1 1 1-1].

6. The method of claim 1, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF320 for 320MHz, and wherein: dLTF320=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right O23,C5*dLTF80_left O5,C6*dLTF80_right O 23 ,C7*dLTF80_left O5,C8*dLTF80_right]; dLTF80_left represents the left half of a long training field sequence for an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; The values ​​of coefficients C1, C2, C3, C4, C5, C6, C7, and C8 are either -1 or +1. 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

7. The method of claim 6, wherein a vector C = [C1 C2 C3 C4 C5 C6 C7 C8] = [11-1-1 1-11-1].

8. The method of claim 1, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF240 for 240MHz, and wherein: dLTF240=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right O23,C5*dLTF80_left O5,C6*dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; The value of each coefficient C1, C2, C3, C4, C5, C6 is either -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

9. The method of claim 1, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF480 for 480MHz, and wherein: dLTF480=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right,O23,C5*dLTF80_left O5,C6*dLTF80_right O 23 ,C7*dLTF80_left O5,C8*dLTF80_right O23,C9*dLTF80_left O5,C 10 *dLTF80_right O 23 ,C 11 *dLTF80_left O5,C 12 *dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; Coefficients C1, C2, C3, C4, C5, C6, C7, C8, C9, C 10 C 11 C 12 Each value is either -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

10. The method of claim 1, wherein generating the distributed tone resource unit long training field sequence comprises generating the distributed tone resource unit long training field sequence with a bandwidth of 160 MHz or greater in a two-step process by reusing an 80 MHz distributed tone resource unit long training field base sequence dLTF80, such that: In dLTF80, each value at multiple locations changes from 0 to -1 or +1; A subsequence of dLTF80 is obtained using multiple 80MHz distributed tone resource unit indexes; and The subsequence is mapped to a long training field transmission of a distributed tone resource unit with a bandwidth of 160 MHz or more based on the corresponding multiple distributed tone resource unit tone indexes or multiple subcarrier indexes.

11. An apparatus comprising: A transceiver configured for wireless transmission and reception; and A processor configured to be coupled to a transceiver and perform operations including the following: A long training sequence for a distributed tone resource unit is generated using a predefined long training sequence of distributed tone resource units; and The long training field sequence of the distributed tone resource unit is transmitted via the transceiver in wireless communication with a bandwidth of 160 MHz or wider.

12. The apparatus of claim 11, wherein the predefined distributed tone resource unit long training field base sequence includes an IEEE 802.11bn 80MHz distributed tone resource unit long training field base sequence.

13. The apparatus of claim 12, wherein generating the distributed tone resource unit long training field sequence comprises changing each value at a plurality of positions in the IEEE 802.11bn 80MHz distributed tone resource unit long training field base sequence from 0 to -1 or +1.

14. The apparatus of claim 11, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF160 of 160 MHz, and wherein: dLTF160=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; The values ​​of coefficients C1, C2, C3, and C4 are either -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

15. The apparatus of claim 14, wherein a vector C = [C1 C2 C3 C4] = [1 1 1-1].

16. The apparatus of claim 11, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF320 of 320 MHz, and wherein: dLTF320=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right O23,C5*dLTF80_left O5,C6*dLTF80_right O 23 ,C7*dLTF80_left O5,C8*dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; The values ​​of coefficients C1, C2, C3, C4, C5, C6, C7, and C8 are -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

17. The apparatus of claim 16, wherein a vector C = [C1 C2 C3 C4 C5 C6 C7 C8] = [1 1-1-11-1 1-1].

18. The apparatus of claim 11, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF240 of 240 MHz, and wherein: dLTF240=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right O23,C5*dLTF80_left O5,C6*dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; The values ​​of coefficients C1, C2, C3, C4, C5, and C6 are -1 or +1; 05 represents five consecutive 0s; 0 23 It represents twenty-three consecutive zeros.

19. The apparatus of claim 11, wherein generating the distributed tone resource unit long training field sequence comprises generating a distributed tone resource unit long training field sequence dLTF480 for 480MHz, and wherein: dLTF480=[C1*dLTF80_left O5,C2*dLTF80_right O 23 ,C3*dLTF80_left O5,C4*dLTF80_right O23,C5*dLTF80_left O5,C6*dLTF80_right O 23 ,C7*dLTF80_left O5,C8*dLTF80_right O23,C9*dLTF80_left O5,C 10 *dLTF80_right O 23 ,C 11 *dLTF80_left O5,C 12 *dLTF80_right]; dLTF80_left represents the left half of a long training field sequence of an 80MHz distributed tone resource unit; dLTF80_right represents the right half of the long training field sequence of this 80MHz distributed tone resource unit; Coefficients C1, C2, C3, C4, C5, C6, C7, C8, C9, C 10 C 11 C 12 Each value is either -1 or +1; 05 represents five consecutive zeros; 0 23 It represents twenty-three consecutive zeros.

20. The apparatus of claim 11, wherein generating the distributed tone resource unit long training field sequence comprises generating the distributed tone resource unit long training field sequence with a bandwidth of 160 MHz or more in a two-step process by reusing an 80 MHz distributed tone resource unit long training field base sequence dLTF80, such that: Each value at multiple locations in dLTF80 is changed from 0 to -1 or +1; A subsequence is extracted from the long training field base sequence dLTF80 of the distributed tone resource unit using multiple 80MHz distributed tone resource unit indices; The subsequence is mapped to a long training field transmission of a distributed tone resource unit with a bandwidth of 160MHz or more based on the corresponding multiple distributed tone resource unit tone indexes or multiple subcarrier indexes.

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