CN117714252A

CN117714252A - Broad bandwidth STF sequence design in wireless communications

Info

Publication number: CN117714252A
Application number: CN202311178450.5A
Authority: CN
Inventors: 胡昇泉; 刘剑函; 汤姆士·艾德华·皮尔二世
Original assignee: MediaTek Inc
Current assignee: MediaTek Inc
Priority date: 2022-09-14
Filing date: 2023-09-13
Publication date: 2024-03-15

Abstract

Broad bandwidth STF sequence design in wireless communications. Various schemes are described relating to wide bandwidth Short Training Field (STF) sequence design in wireless communications. The processor of the apparatus generates an STF of a physical layer protocol data unit (PPDU) by using a predefined STF base sequence. The processor then performs wireless communication over a 240MHz, 480MHz, or 640MHz bandwidth using the PPDU.

Description

Broad bandwidth STF sequence design in wireless communications

Cross-reference to related patent applications

The present invention is part of a non-provisional patent application claiming priority from U.S. provisional patent application No.63/375554 filed on 9.2022 and claiming priority from U.S. patent application No.18/237,053 filed on 8.23.2023, the contents of which are incorporated by reference in their entirety.

Technical Field

The present invention relates generally to wireless communications, and more particularly to techniques related to wide bandwidth short training field (short training field, STF) sequence design in wireless communications.

Background

Unless otherwise indicated herein, the approaches described in this section are not prior art to the claims listed below and are not admitted to be prior art by inclusion in this section.

In wireless communications, such as Wi-Fi (or WiFi) and wireless local area network (wireless local area network, WLAN) according to one or more institute of electrical and electronics engineers (Institute of Electrical and Electronics Engineer, IEEE) 802.11 standards, achieving high throughput is one of the key goals for next generation wireless connections. Wider bandwidths (such as 240MHz, 480MHz, and 640 MHz) have been considered as potential candidates for next generation WLANs. However, at present, how to achieve high throughput in a wide bandwidth such as 240MHz, 480MHz, and 640MHz remains to be defined. Therefore, a solution for STF sequence design for wide bandwidth in wireless communication is needed.

Disclosure of Invention

The following summary is illustrative only and is not intended to be in any way limiting. That is, the following summary is provided to introduce a selection of concepts, benefits, and advantages of the novel and non-obvious techniques described herein. The implementation of the selection is further described in the detailed description below. Accordingly, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

It is an object of the present invention to provide schemes, concepts, designs, techniques, methods and apparatuses related to STF sequence design for wide bandwidth in wireless communications. Under the various proposed schemes described herein, STF sequence designs may be used for wide bandwidths such as 240MHz, 480MHz, and 640 MHz. In addition, several designs have been proposed and peak-to-average power ratio (PAPR) performance has been evaluated for comparison. It is believed that implementation of the proposed solution may solve or otherwise alleviate the above-mentioned problems.

In one aspect, a method may include: an STF of a physical layer protocol data unit (PPDU) is generated by using a predefined STF base sequence. The method may further comprise: wireless communication is performed in a 240MHz, 480MHz, or 640MHz bandwidth using a PPDU.

In another aspect, an apparatus may include: a transceiver and a processor coupled to the transceiver. The transceiver may be configured to transmit and receive wirelessly. The processor may be configured to generate an STF of the PPDU by using a predefined STF base sequence. The processor may also be configured to perform wireless communication in a 240MHz, 480MHz, or 640MHz bandwidth using the PPDU.

Notably, while the description provided herein may be in the context of certain Radio access technologies, networks, and network topologies (e.g., wi-Fi), the proposed concepts, schemes, and any variants/derivatives thereof may be implemented in, for, and through other types of Radio access technologies, networks, and network topologies such as, but not limited to, bluetooth, zigBee, fifth generation (5th Generation,5G)/New Radio (NR), long Term Evolution (LTE), LTE-Advanced Pro, internet of things (Internet-of-things), industrial IoT (iiiot), and narrowband IoT. Accordingly, the scope of the invention is not limited to the examples described herein.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The accompanying drawings illustrate an implementation of the invention and, together with the description, serve to explain the principles of the invention. It will be appreciated that the drawings are not necessarily to scale, since some components may be shown out of scale from actual implementation to clearly illustrate the inventive concept.

FIG. 1 is a schematic diagram of an example network environment in which various solutions and schemes according to the invention may be implemented.

FIG. 2 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

FIG. 3 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

FIG. 4 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

FIG. 5 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

FIG. 6 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

FIG. 7 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

FIG. 8 is a schematic diagram of an example scenario in accordance with an implementation of the present invention.

Fig. 9 is a block diagram of an example communication system in accordance with an implementation of the invention.

FIG. 10 is a flow chart of an example process according to an implementation of the invention.

Detailed Description

Detailed embodiments and implementations of the claimed subject matter are disclosed herein. It is to be understood, however, that the disclosed embodiments and implementations are merely exemplary of the claimed subject matter, which may be embodied in various forms. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that this description will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the following description, details of well-known features and/or techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

SUMMARY

Implementations consistent with the present disclosure relate to various techniques, methods, schemes, and/or solutions related to STF sequence design for wide bandwidth in wireless communications. Many possible solutions according to the invention may be implemented separately or in combination. That is, although these possible solutions may be described separately below, two or more of these possible solutions may be implemented in one combination or another.

Notably, in the present invention, regular RU (rRU) refers to RU with tones that are continuous (e.g., adjacent to each other) and that are not interleaved (interleaved), not staggered (interleaved), or not otherwise distributed. Further, 26 tone rule RU may be interchangeably represented as RU26 (or rRU 26), 52 tone rule RU may be interchangeably represented as RU52 (or rRU 52), 106 tone rule RU may be interchangeably represented as RU106 (or rRU 106), 242 tone rule RU may be interchangeably represented as RU242 (or rRU 242), and so on. Furthermore, aggregate (26+52) tone rule multiple RU (multi-RU, MRU) may be interchangeably represented as MRU78 (or rMRU 78), aggregate (26+106) tone rule MRU may be interchangeably represented as MRU132 (or rMRU 132), aggregate (484+242) tone rule MRU may be interchangeably represented as MRU726 or MRU (484+242) (or rMRU 726), and so forth.

Since the above examples are merely illustrative examples, and not an exhaustive list of all possibilities, the same applies to regular RU, distributed tone RU, MRU, and distributed tone MRU of different sizes (or different numbers of tones). It is also worth noting that in the present invention, a bandwidth of 20MHz may be interchangeably denoted as BW20 or BW20M, a bandwidth of 40MHz may be interchangeably denoted as BW40 or BW40M, a bandwidth of 80MHz may be interchangeably denoted as BW80 or BW80M, a bandwidth of 160MHz may be interchangeably denoted as BW160 or BW160M, a bandwidth of 240MHz may be interchangeably denoted as BW240 or BW240M, a bandwidth of 320MHz may be interchangeably denoted as BW320 or BW320M, a bandwidth of 480MHz may be interchangeably denoted as BW480 or BW480M, and a bandwidth of 640MHz may be interchangeably denoted as BW640 or BW640M.

FIG. 1 illustrates an example network environment 100 in which various solutions and schemes according to the invention may be implemented. Fig. 2-10 illustrate examples of implementing various proposed schemes in a network environment 100 according to the present invention. Various proposed schemes will be described below with reference to fig. 1 to 10.

Referring to fig. 1, a network environment 100 may involve a Station (STA) 110 in wireless communication with a STA 120. Either STA 110 and STA 120 may function as an Access Point (AP) STA or, alternatively, as a non-AP STA. In some cases, STA 110 and STA 120 may be associated with a basic service set (basic service set, BSS) according to one or more IEEE 802.11 standards (e.g., IEEE 802.11be and/or standards developed in the future). Each of STA 110 and STA 120 may be configured to communicate with each other through STF sequence design utilizing a wide bandwidth in wireless communication according to various proposed schemes described below. That is, either or both of STA 110 and STA 120 may serve as "users" in the proposed schemes and examples described below. It is noted that while various proposed schemes may be described below, singly or separately, in actual implementations some or all of the proposed schemes may be utilized or otherwise jointly implemented. Of course, each of the proposed schemes may be utilized or otherwise implemented singly or individually.

FIG. 2 illustrates an example scenario 200 of an implementation in accordance with the invention. The scenario 200 may relate to RU/MRU of BW240, BW480, and BW640 considered in STF PAPR evaluation. Part (a) of fig. 2 shows a list of RU/MUR types (according to the number of tones in a given RU/MRU) and the corresponding number of RU/MRU that can be transmitted in BW 240. Part (B) of fig. 2 shows a list of RU/MUR types (according to the number of tones in a given RU/MRU) and the corresponding number of RU/MRU that can be transmitted in BW 480. Part (C) of fig. 2 shows a list of RU/MUR types (according to the number of tones in a given RU/MRU) and the corresponding number of RU/MRUs that can be transmitted in BW 640.

Under various proposed schemes according to the present invention regarding ultra-high reliability (UHR) STF (UHR-STF) of a wide bandwidth, a predefined STF base sequence may be used to construct or otherwise generate a UHR-STF of a wide bandwidth. For example, IEEE 802.11ax high-efficiency (HE) STF (HE-STF) can be reused as a basic building sequence for UHR-STF for wide bandwidths such as 240MHz, 480MHz, and 640 MHz. Under the proposed scheme, for wide bandwidths of 240MHz, 480MHz and 640MHz, 80MHz HE-STF sequences and/or very high throughput (EHT) STF (EHT-STF) sequences may be reused, with additional coefficients applied on each 80MHz frequency sub-block or segment. Under the proposed scheme, an 80MHz segment sequence (denoted herein as "ehts80_1x") for a Downlink (DL) multi-user (MU) PPDU may be expressed as: ehts80_1x= [ M,1, (-1) x M,0, (-1) x M,1, (-1) x M ]. Further, an 80MHz segment sequence (denoted herein as "ehts80_2x") for an Uplink (UL) trigger-based (TB) PPDU may be expressed as: ehts80_2x= [ M, -1, -M, -1, M,0, -M,1, -M ]. Here, M represents an 80MHz sub-sequence, and m= [ -1, -1, -1,1]. These coefficients are believed to help improve PAPR performance over various RU sizes of 240MHz, 480MHz, and 640 MHz.

Under the proposed scheme of STF sequence design with respect to 240MHz bandwidth according to the present invention, UHR-STF (denoted herein as "UHRs" of DL MU PPDU may be provided _{-1520:16:1520} ") and UHR-STF of UL TB PPDU (denoted herein as" UHRS ") _-1528:8:1528 ”)。UHRS _{-1520:16:1520} Can be expressed as: UHRS- _1520:16:1520 ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x]* (1+j)/sqrt (2). Here, each of c (1), c (2), and c (3) represents a respective optimization coefficient. Under the proposed scheme, vector c= [ C (1) C (2) C (3) of the combination of optimization coefficients with respect to UHR-STF of DL MU PPDU]And C= [1-1]Or alternatively c= [ -1-1 1]Or alternatively c= [ -1 1]。UHRS _-1528:8:1528 Can be expressed as: UHRS _-1528:8:1528 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x]* (1+j)/sqrt (2). Here, each of c (1), c (2), and c (3) represents a respective optimization coefficient. Under the proposed scheme, vector c= [ C (1) C (2) C (3) of the combination of optimization coefficients with respect to UHR-STF of UL TB PPDU]And C= [1-1]Or alternatively c= [ -1-1 1]Or alternatively c= [ -1 1]. Notably, the EHT-STF sequences at indices-8, -1016, -1032, -2040, 1032, 1016 and 8The value of a column may be 0.

Fig. 3 illustrates an example scenario 300 of a comparison of the PAPR curves of STF and data in a simulation for a DL MU PPDU in 240MHz bandwidth. Assume that for DL >68% of the spectrum is allocated. Fig. 4 illustrates an example scenario 400 of a comparison of the PAPR curves of STF and data in a simulation for UL TB PPDU in 240MHz bandwidth. RUs used in the simulations were MRU (2X 996), MRU (2X 996+484) and MRU (3X 996). As shown in fig. 3 and 4, PAPR performance can be improved by reducing PAPR using an optimization coefficient.

Under the proposed scheme of STF sequence design with respect to 480MHz bandwidth according to the present invention, UHR-STF (denoted herein as "UHRs" of DL MU PPDU may be provided _{-3056:16:3056} ") and UHR-STF of UL TB PPDU (denoted herein as" UHRS ") _-3064:8:3064 ”)。UHRS _{-3056:16:3056} Can be expressed as: UHRS- _3056:16:3056 ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x]* (1+j)/sqrt (2). Here, each of c (1), c (2), c (3), c (4), c (5), and c (6) represents a respective optimization coefficient. Under the proposed scheme, regarding UHR-STF of DL MU PPDU, vector of combination of optimization coefficients C= [ C (1) C (2) C (3) C (4) C (5) C (6)]And C= [ 11 1 1-1]Or alternatively c= [1 1-1-1]]。UHRS _-3064:8:3064 Can be expressed as: UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x]* (1+j)/sqrt (2). Here, each of c (1), c (2), c (3), c (4), c (5), and c (6) represents a respective optimization coefficient. Under the proposed scheme, vector c= [ C (1) C (2) C (3) C (4) C (5) C (6) of the combination of optimization coefficients with respect to UHR-STF of UL TB PPDU]And C= [ 11 1-1-1 1]]Or alternatively c= [1 1-1 1-1]]. Notably, the values of the EHT-STF sequences at indices-3064, -2056, -2040, -1032, -1016, 1032, 2040, 2056, and 3064 may be 0.

Fig. 5 illustrates an example scenario 500 of a comparison of the PAPR curves of STF and data in a simulation for a DL MU PPDU in a 480MHz bandwidth. Fig. 6 illustrates an example scenario 600 of a comparison of the PAPR curves of STF and data in a simulation for UL TB PPDU in 480MHz bandwidth. RUs used in the simulations were MRU (2X 996), MRU (2X 996+484) and MRU (3X 996). As shown in fig. 5 and 6, PAPR performance can be improved by reducing PAPR using an optimization coefficient.

Under the proposed scheme of STF sequence design with respect to 640MHz bandwidth according to the present invention, UHR-STF (denoted herein as "UHRs" of DL MU PPDU may be provided _{-3056:16:3056} ") and UHR-STF of UL TB PPDU (denoted herein as" UHRS ") _-3064:8:3064 ”)。UHRS _{-3056:16:3056} Can be expressed as: UHRS- _3056:16:3056 ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x,0,c(7)*EHTS80_1x,0,c(8)*EHTS80_1x]* (1+j)/sqrt (2). Here, each of c (1), c (2), c (3), c (4), c (5), c (6), c (7), and c (8) represents a respective optimization coefficient. Under the proposed scheme, regarding UHR-STF of DL MU PPDU, vector of combination of optimization coefficients C= [ C (1) C (2) C (3) C (4) C (5) C (6) C (7) C (8)]And C= [1-1-1-1-1-1 1]]Or alternatively c= [ -1 11 11 1 1-1]。UHRS _-3064:8:3064 Can be expressed as: UHRS- _3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x,0,c(7)*EHTS80_2x,0,c(8)*EHTS80_2x]* (1+j)/sqrt (2). Here, each of c (1), c (2), c (3), c (4), c (5), c (6), c (7), and c (8) represents a respective optimization coefficient. Under the proposed scheme, regarding UHR-STF of UL TB PPDU, vector of combination of optimization coefficients C= [ C (1) C (2) C (3) C (4) C (5) C (6) C (7) C (8)]And C= [ 11 1-1 11 1-1]Or alternatively c= [ 11 1-1 1 1-1]. Notably, the values of the EHT-STF sequences at indices-4088, -3080, -3064, -2056, -2040, -1032, -1016, 1032, 2040, 2056, 3064, 3080, and 4088 may be 0.

Fig. 7 illustrates an example scenario 700 of a comparison of the PAPR curves of STF and data in a simulation for a DL MU PPDU in 640MHz bandwidth. Fig. 8 illustrates an example scenario 800 of a comparison of the PAPR curves of STF and data in a simulation for UL TB PPDU in 640MHz bandwidth. RUs used in the simulations were MRU (2X 996), MRU (2X 996+484) and MRU (3X 996). As shown in fig. 7 and 8, PAPR performance can be improved by reducing PAPR using an optimization coefficient.

Exemplary implementation

Fig. 9 illustrates an example system 900 having at least example apparatus 910 and example apparatus 920 according to an implementation of the invention. Each of apparatus 910 and apparatus 920 may perform various functions to implement the schemes, techniques, procedures, and methods described herein in connection with STF sequence design for wide bandwidth in wireless communications, including the various schemes described above and the procedures described below with reference to the various proposed designs, concepts, schemes, systems, and methods described above. For example, apparatus 910 may be an example implementation of communication entity 110 and apparatus 920 may be an example implementation of communication entity 120.

Each of devices 910 and 920 may be part of an electronic device, which may be a STA or AP, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each of apparatus 910 and apparatus 920 may be implemented in a smart phone, a smart watch, a personal digital assistant, a digital camera, or a computing device such as a tablet computer, a laptop computer, or a notebook computer. Each of the devices 910 and 920 may also be part of a machine-type device, which may be an internet of things device such as a non-mobile or stationary device, a home device, a wired communication device, or a computing device. For example, each of the devices 910 and 920 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented in or as a network device, apparatus 910 and/or apparatus 920 may be implemented in a network node (e.g., an AP in a WLAN).

In some implementations, each of the apparatus 910 and the apparatus 920 may be implemented in the form of one or more integrated-circuit (IC) chips, such as, and without limitation, one or more single-core processors, one or more multi-core processors, one or more complex-instruction-set-computing (CISC) processors, or one or more reduced-instruction-set-computing (RISC) processors. In the various aspects described above, each of the apparatus 910 and the apparatus 920 may be implemented in or as a STA or an AP. Each of the means 910 and the means 920 may include at least some of those components shown in fig. 9, such as the processor 912 and the processor 922, respectively. Each of apparatus 910 and apparatus 920 may also include one or more other components (e.g., an internal power source, a display device, and/or a user interface device) not relevant to the proposed solution of the present invention, and thus, for brevity, such components of apparatus 910 and apparatus 920 are neither illustrated in fig. 9 nor described below.

In one aspect, each of processor 912 and processor 922 may be implemented in the form of 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, even though the singular term "processor" is used herein to refer to processor 912 and processor 922, each of processor 912 and processor 922 according to the present invention may include multiple processors in some implementations, and a single processor in other implementations. In another aspect, each of processor 912 and processor 922 may be implemented in hardware (and optionally firmware) including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more registers, one or more inductors, one or more memristors, and/or one or more varactors configured and arranged to achieve a particular objective in accordance with the present invention. In other words, in at least some implementations, each of processor 912 and processor 922 is a special purpose machine specifically designed, arranged, and configured to perform specific tasks including tasks related to STF sequence design of a wide bandwidth in wireless communications in accordance with various implementations of the invention. For example, each of the processor 912 and the processor 922 may be configured with hardware components or circuitry to implement one, some, or all of the examples described and illustrated herein.

In some implementations, the apparatus 910 may also include a transceiver 916 coupled to the processor 912. Transceiver 916 may be capable of wirelessly transmitting and receiving data. In some implementations, the apparatus 920 may also include a transceiver 926 coupled to the processor 922. Transceiver 926 may include a transceiver capable of wirelessly transmitting and receiving data.

In some implementations, the apparatus 910 may also include a memory 914, the memory 914 being coupled to the processor 912 and capable of being accessed by the processor 912 and storing data therein. In some implementations, the apparatus 920 may also include a memory 924, the memory 924 being coupled to the processor 922 and capable of being accessed by the processor 922 and storing data therein. Each of the memory 914 and the memory 924 may include a random-access memory (RAM) type, such as Dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM), and/or zero-capacitor RAM (Z-RAM). Alternatively or additionally, each of the memory 914 and the memory 924 may include a read-only memory (ROM) type, such as mask ROM, programmable ROM (PROM), erasable programmable ROM (erasable programmable ROM, EPROM), and/or electrically erasable programmable ROM (electrically erasable programmable ROM, EEPROM). Alternatively or additionally, each of the memory 914 and the memory 924 may include a non-volatile random-access memory (NVRAM) type, such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and/or phase change memory.

Each of the apparatus 910 and the apparatus 920 may be communication entities capable of communicating with each other using various proposed schemes according to the present invention. For illustrative purposes, and not limitation, a description of the capabilities of apparatus 910 as communication entity 110 and apparatus 920 as communication entity 120 is provided below in the context of example process 1000. It is noted that although the example implementations described below are provided in the context of a WLAN, they may also be implemented in other types of networks. Thus, although the description of the example implementation below relates to a scenario in which apparatus 910 is used as a transmitting device and apparatus 920 is used as a receiving device, it also applies to another scenario in which apparatus 910 is used as a receiving device and apparatus 920 is used as a transmitting device.

Exemplary Process

FIG. 10 illustrates an example process 1000 in accordance with implementations of the invention. Process 1000 may represent aspects of implementing the various proposed designs, concepts, schemes, systems and methods described above. More particularly, process 1000 may represent aspects of the proposed concepts and schemes related to STF sequence design for wide bandwidth in wireless communications in accordance with the present invention. Process 1000 may include one or more operations, actions, or functions as illustrated by one or more of blocks 1010 and 1020. While illustrated as discrete blocks, the various blocks of process 1000 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Further, the blocks/sub-blocks of process 1000 may be performed in the order shown in fig. 10, or alternatively in a different order. Further, one or more of the blocks/sub-blocks of process 1000 may be performed repeatedly or iteratively. Process 1000 may be implemented by apparatus 910 and apparatus 920, and any variations thereof, or in apparatus 910 and apparatus 920, and any variations thereof. For illustrative purposes only and not limitation, process 1000 is described below in the context of device 910 as a communication entity 110 (e.g., STA or AP) and device 920 as a communication entity 120 (e.g., peer STA or AP) according to a wireless network (such as WLAN) in one or more IEEE 802.11 standards. Process 1000 may begin at block 1010.

At 1010, process 1000 may include: the processor 912 of the apparatus 910 generates an STF of the PPDU by using a predefined STF base sequence. Process 1000 may proceed from 1010 to 1020.

At 1020, process 1000 may include: processor 912 performs wireless communications (e.g., with device 920) in 240MHz, 480MHz, or 640MHz bandwidth using a PPDU via transceiver 916.

In some implementations, the predefined STF base sequence may include: IEEE 802.11ax 80MHz HE-STF or IEEE 802.11be EHT-STF sequences. In this case, in generating the STF, process 1000 may include: the processor 912 repeats the 80MHz HE-STF or EHT-STF sequence and applies the combination of coefficients on each 80MHz frequency sub-block or segment of 240MHz, 480MHz or 640MHz bandwidth.

In some implementations, in generating the STF, process 1000 may include: the processor 912 generates an STF of the DL MU PPDU or UL TB PPDU based on: (i) M= [ -1, -1, -1,1]; (ii) Ehts80_1x= [ M,1, (-1) x M,0, (-1) x M,1, (-1) x M ]; and (iii) ehts80_2x= [ M, -1, -M, -1, M,0, -M,1, -M ]. Here, M represents an 80MHz sub-sequence, ehts80_1x represents an 80MHz segment sequence of a DL MU PPDU, and ehts80_2x represents an 80MHz segment sequence of a UL TB PPDU.

In some implementations, in generating the STF, process 1000 may include: processor 912 generates a UHR-STF for the DL MU PPDU using a combination of the optimization coefficients such that the STF is used in wireless communication over a 240MHz bandwidth to generate a UHRS _{-1520:16:1520} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x]* (1+j)/sqrt (2). Here, UHRS _{-1520:16:1520} Each of UHR-STF, C (1), C (2), and C (3) representing DL MU PPDUs represents a respective optimization coefficient, vector c= [ C (1) C (2) C (3) of the combination of optimization coefficients]And C= [1-1]Or C= [ -1-1 1]Or C= [ -1 11]。

In some implementations, in generating the STF, process 1000 may include: processor 912 generates a UHR-STF of the UL TB PPDU using a combination of the optimization coefficients such that the STF is used in wireless communication in 240MHz bandwidth to generate UHRS _-1528:8:1528 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x]* (1+j)/sqrt (2). Here, UHRS _-1528:8:1528 Each of UHR-STF, C (1), C (2) and C (3) representing UL TB PPDU represents a respective optimization coefficient, vector c= [ C (1) C (2) C (3) of the combination of optimization coefficients]And C= [1-1]Or C= [ -1-1 1]Or C= [ -1 11]。

In some implementations, in generating the STF, process 1000 may include: the processor 912 uses optimization coefficientsUHR-STF of DL MU PPDU is generated such that STF is used in wireless communication of 480MHz bandwidth to generate UHRS _{-3056:16:3056} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x]* (1+j)/sqrt (2). Here, UHRS _{-3056:16:3056} Each of UHR-STF, C (1), C (2), C (3), C (4), C (5), and C (6) representing DL MU PPDUs represents a respective optimization coefficient, the vector of the combination of optimization coefficients c= [ C (1) C (2) C (3) C (4) C (5) C (6)]And C= [ 11 1 1-1]Or C= [1 1-1-1]。

In some implementations, in generating the STF, process 1000 may include: processor 912 generates a UHR-STF of the UL TB PPDU using a combination of the optimization coefficients such that the STF is used in wireless communication in 480MHz bandwidth to generate a UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x]* (1+j)/sqrt (2). Here, UHRS _-3064:8:3064 Each of UHR-STF, C (1), C (2), C (3), C (4), C (5) and C (6) representing UL TB PPDU represents a respective optimization coefficient, the vector c= [ C (1) C (2) C (3) C (4) C (5) C (6) of the combination of the optimization coefficients]And C= [ 11 1-1-1 1]]Or C= [1 1-1 1-1]]。

In some implementations, in generating the STF, process 1000 may include: processor 912 generates a UHR-STF for the DL MU PPDU using a combination of the optimization coefficients such that the STF is used in wireless communication over a 640MHz bandwidth to generate a UHRS _{-3056:16:3056} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x,0,c(7)*EHTS80_1x,0,c(8)*EHTS80_1x]* (1+j)/sqrt (2). Here, UHRS _{-3056:16:3056} UHR-STF, C (1), C (2), C (3), C (4), C (5), C (6), C (7), and C (8) representing DL MU PPDU each represent a respective optimization coefficient, vector of the combination of optimization coefficients C= [ C (1) C (2) C (3) C (4) C (5) C (6) C (7) C (8)]And C= [1-1-1-1-1-1 1]]Or C= [ -1 11 11 1 1-1]。

In some implementations, in generating the STF, process 1000 may include: processor 912 generates a U of the UL TB PPDU using a combination of the optimization coefficientsHR-STF such that STF is used in wireless communication with 640MHz bandwidth to generate UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x,0,c(7)*EHTS80_2x,0,c(8)*EHTS80_2x]* (1+j)/sqrt (2). Here, UHRS _-3064:8:3064 UHR-STF, C (1), C (2), C (3), C (4), C (5), C (6), C (7) and C (8) representing the UL TB PPDU each represent a respective optimization coefficient, the vector of the combination of optimization coefficients C= [ C (1) C (2) C (3) C (4) C (5) C (6) C (7) C (8)]And C= [ 11 1-1 11 1-1]Or C= [ 11 1-1 1 1-1]。

Additional notes

The subject matter described herein sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely exemplary, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Thus, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected," or "operably coupled," to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable," to each other to achieve the desired functionality. Specific examples of operably coupled include, but are not limited to, components capable of physically mating and/or physically interacting and/or components capable of wirelessly interacting and/or components capable of logically interacting and/or logically interacting.

Furthermore, with respect to any plural and/or singular terms used herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. For clarity, various singular/plural permutations may be explicitly set forth herein.

Furthermore, those skilled in the art will understand that, in general, terms used herein, and especially those used in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "comprising" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "comprising" should be interpreted as "including but not limited to," etc.). Those skilled in the art will also understand that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" or "an" should be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to refer to the claims. In addition, even if a specific number of a introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, means at least two recitations, or two or more recitations). Moreover, in those instances where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand that such a convention would work (e.g., "a system having at least one of A, B and C" would include but not be limited to systems having a alone, B alone, C, A and B together alone, a and C together, B and C together, and/or A, B and C together, etc.). In those instances where a convention analogous to "at least one of A, B or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand that such a convention is in the sense (e.g., "a system having at least one of A, B or C" would include but not be limited to systems having a alone a, B alone, C, A and B together, a and C together, B and C together, and/or A, B and C together, etc.). It will be further understood by those within the art that, in fact, any inflections and/or phrases presenting two or more alternative terms (whether in the specification, claims, or drawings) should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "a or B" should be understood to include the possibility of "a" or "B" or "a and B".

From the foregoing, it will be apparent that various implementations of the invention have been described for purposes of illustration, and that various modifications may be made without deviating from the scope and spirit of the invention. Accordingly, the implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Claims

1. A method, the method comprising:

generating a Short Training Field (STF) of a physical layer protocol data unit (PPDU) by using a STF basic sequence; and

wireless communication is performed in a 240MHz, 480MHz, or 640MHz bandwidth using the PPDU.

2. The method of claim 1, wherein the predefined STF base sequence comprises: institute of Electrical and Electronics Engineers (IEEE) 802.11ax 80mhz High Efficiency (HE) STF (HE-STF) or IEEE 802.11be ultra high throughput (EHT) STF (EHT-STF) sequences.

3. The method of claim 2, wherein the generating the STF comprises: the 80MHz HE-STF or EHT-STF sequence is repeated and coefficient combinations are applied on each 80MHz frequency sub-block or segment of the 240MHz, 480MHz or 640MHz bandwidth.

4. The method of claim 1, wherein the generating the STF comprises: generating the STF of a Downlink (DL) multi-user (MU) PPDU or an Uplink (UL) trigger-based (TB) PPDU based on:

M＝[-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1]；

ehts80_1x= [ M,1, (-1) x M,0, (-1) x M,1, (-1) x M ]; and is also provided with

EHTS80_2x＝[M,-1,M,-1,-M,-1,M,0,-M,1,M,1,-M,1,-M]，

Wherein:

m represents an 80MHz sub-sequence,

ehts80_1x represents an 80MHz segment sequence of the DL MU PPDU, and

ehts80_2x represents the 80MHz segment sequence of the UL TB PPDU.

5. The method of claim 4, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of a Downlink (DL) multi-user (MU) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 240MHz bandwidth, and wherein:

UHRS _{-1520:16:1520} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x]*

(1+j)/sqrt(2)，

UHRS _{-1520:16:1520} the UHR-STF representing the DL MU PPDU,

each of c (1), c (2) and c (3) represents a respective optimization coefficient,

vector c= [ C (1) C (2) C (3) ] of the combination of the optimization coefficients, and

c= [1-1-1] or c= [ -1-1 1] or c= [ -1 11 ].

6. The method of claim 4, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of an Uplink (UL) trigger-based (TB) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 240MHz bandwidth, and wherein:

UHRS _-1528:8:1528 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x]*

(1+j)/sqrt(2)，

UHRS _-1528:8:1528 the UHR-STF representing the UL TB PPDU,

c= [1-1-1] or c= [ -1-1 1] or c= [ -1 11 ].

7. The method of claim 4, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of a Downlink (DL) multi-user (MU) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 480MHz bandwidth, and wherein:

UHRS _{-3056:16:3056} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,

0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x]*(1+j)/sqrt(2)，

UHRS _{-3056:16:3056} the UHR-STF representing the DL MU PPDU,

each of c (1), c (2), c (3), c (4), c (5) and c (6) represents a respective optimization coefficient,

vector c= [ C (1) C (2) C (3) C (4) C (5) C (6) ] of the combination of the optimization coefficients, and

c= [ 11 1 1-1-1] or C= [1 1-1-1-1-1].

8. The method of claim 4, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of an Uplink (UL) trigger-based (TB) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 480MHz bandwidth, and wherein:

UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,

c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x]*(1+j)/sqrt(2)，

UHRS _-3064:8:3064 UHR-STF indicating UL TB PPDU,

c= [1 1-1-1 1] or c= [1 1-1 1-1-1].

9. The method of claim 4, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of a Downlink (DL) multi-user (MU) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 640MHz bandwidth, and wherein:

UHRS _{-3056:16:3056} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,

0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x,0,c(7)*EHTS80_1x,0,c(8)*EHTS80_1x]*(1+j)/sqrt(2)，

UHRS _{-3056:16:3056} the UHR-STF representing the DL MU PPDU,

each of c (1), c (2), c (3), c (4), c (5), c (6), c (7) and c (8) represents a respective optimization coefficient,

vector c= [ C (1) C (2) C (3) C (4) C (5) C (6) C (7) C (8) ] of the combination of the optimization coefficients, and

c= [1-1-1-1-1-1-1 1] or C= [ -1 11 11 1 1-1].

10. The method of claim 4, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of an Uplink (UL) trigger-based (TB) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 640MHz bandwidth, and wherein:

UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,

c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x,0,c(7)*EHTS80_2x,0,c(8)*EHTS80_2x]*(1+j)/sqrt(2)，

UHRS _-3064:8:3064 the UHR-STF representing the UL TB PPDU,

c= [ 11 1-1 11 1-1] or C= [ 11 1-1-1].

11. An apparatus, the apparatus comprising:

a transceiver configured to wirelessly transmit and receive; and

a processor coupled to the transceiver and configured to perform operations comprising:

wireless communication is performed in a 240MHz, 480MHz, or 640MHz bandwidth using the PPDU via the transceiver.

12. The apparatus of claim 11, wherein the predefined STF base sequence comprises: institute of Electrical and Electronics Engineers (IEEE) 802.11ax 80mhz High Efficiency (HE) STF (HE-STF) or IEEE 802.11be ultra high throughput (EHT) STF (EHT-STF) sequences.

13. The apparatus of claim 12, wherein the generating the STF comprises: the 80MHz HE-STF or EHT-STF sequence is repeated and coefficient combinations are applied on each 80MHz frequency sub-block or segment of the 240MHz, 480MHz or 640MHz bandwidth.

14. The apparatus of claim 11, wherein the generating the STF comprises: generating the STF of a Downlink (DL) multi-user (MU) PPDU or an Uplink (UL) trigger-based (TB) PPDU based on:

M＝[-1,-1,-1,1,1,1,-1,1,1,1,-1,1,1,-1,1]；

ehts80_1x= [ M,1, (-1) x M,0, (-1) x M,1, (-1) x M ]; and is also provided with

EHTS80_2x＝[M,-1,M,-1,-M,-1,M,0,-M,1,M,1,-M,1,-M]，

Wherein:

m represents an 80MHz sub-sequence,

ehts80_1x represents an 80MHz segment sequence of the DL MU PPDU, and

ehts80_2x represents the 80MHz segment sequence of the UL TB PPDU.

15. The apparatus of claim 14, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of a Downlink (DL) multi-user (MU) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 240MHz bandwidth, and wherein:

UHRS _{-1520:16:1520} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x]*

(1+j)/sqrt(2)，

UHRS _{-1520:16:1520} the UHR-STF representing the DL MU PPDU,

c= [1-1-1] or c= [ -1-1 1] or c= [ -1 11 ].

16. The apparatus of claim 14, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of an Uplink (UL) trigger-based (TB) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 240MHz bandwidth, and wherein:

UHRS _-1528:8:1528 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x]*

(1+j)/sqrt(2)，

UHRS _-1528:8:1528 representing the UL TSaid UHR-STF of the B PPDU,

c= [1-1-1] or c= [ -1-1 1] or c= [ -1 11 ].

17. The apparatus of claim 14, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of a Downlink (DL) multi-user (MU) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 480MHz bandwidth, and wherein:

UHRS _{-3056:16:3056} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,

0,c(4)*EHTS80_1x,0,c(5)*EHTS80_1x,0,c(6)*EHTS80_1x]*(1+j)/sqrt(2)，

UHRS _{-3056:16:3056} the UHR-STF representing the DL MU PPDU,

c= [ 11 1 1-1-1] or C= [1 1-1-1-1-1].

18. The apparatus of claim 14, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of an Uplink (UL) trigger-based (TB) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 480MHz bandwidth, and wherein:

UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,

c(4)*EHTS80_2x,0,c(5)*EHTS80_2x,0,c(6)*EHTS80_2x]*(1+j)/sqrt(2)，

UHRS _-3064:8:3064 UHR-STF indicating UL TB PPDU,

c= [1 1-1-1 1] or c= [1 1-1 1-1-1].

19. The apparatus of claim 14, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of a Downlink (DL) multi-user (MU) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 640MHz bandwidth, and wherein:

UHRS _{-3056:16:3056} ＝[c(1)*EHTS80_1x,0,c(2)*EHTS80_1x,0,c(3)*EHTS80_1x,

UHRS _{-3056:16:3056} the UHR-STF representing the DL MU PPDU,

c= [1-1-1-1-1-1-1 1] or C= [ -1 11 11 1 1-1].

20. The apparatus of claim 14, wherein the generating the STF comprises: generating an Ultra High Reliability (UHR) STF (UHR-STF) of an Uplink (UL) trigger-based (TB) PPDU using a combination of optimization coefficients such that the STF is used in the wireless communication of the 640MHz bandwidth, and wherein:

UHRS _-3064:8:3064 ＝[c(1)*EHTS80_2x,0,c(2)*EHTS80_2x,0,c(3)*EHTS80_2x,0,

UHRS _-3064:8:3064 the UHR-STF representing the UL TB PPDU,

c= [ 11 1-1 11 1-1] or C= [ 11 1-1-1].