Ambient power ppdu format designs for wireless communications
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- MEDIATEK INC
- Filing Date
- 2025-03-24
- Publication Date
- 2026-06-17
AI Technical Summary
Existing wireless communication technologies face challenges in coexistence with IEEE 802.11be+ STAs due to inefficiencies in power consumption and network performance, particularly with battery-free and maintenance-free devices, which are limited by transmission distance and lack of network-level backhaul, necessitating labor-intensive solutions.
Implementing novel AMP PPDU format designs that include legacy preambles and additional signaling fields, such as L-STF, L-LTF, L-SIG, and U-SIGs, with indicators for AMP PPDU recognition, allowing early termination and improved power management for IEEE 802.11be+ STAs, and using non-coherent waveforms for reduced power consumption.
Enhances coexistence with IEEE 802.11be+ STAs by improving network performance and power efficiency, enabling better recognition and reception of AMP PDPU formats, and reducing unnecessary power consumption in wireless devices.
Smart Images

Figure CN2025084363_02102025_PF_FP_ABST
Abstract
Description
AMBIENT POWER PPDU FORMAT DESIGNS FOR WIRELESS COMMUNICATIONSCROSS REFERENCE TO RELATED PATENT APPLICATION
[0001] The present disclosure is part of a non-provisional patent application claiming the priority benefit of U.S. Provisional Patent Application No. 63 / 569,252, filed 25 March 2024, the content of which being herein incorporated by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure is generally related to wireless communications and, more particularly, to ambient power (AMP) physical-layer protocol data unit (PPDU) format designs for wireless communications.BACKGROUND
[0003] Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.
[0004] In wireless communications such as Wi-Fi (or WiFi) in accordance with the Institute of Electrical and Electronics Engineers (IEEE) specification (s) , battery-free and maintenance-free wireless solutions tend to gain more and more attention. Passive radio frequency identification (RFID) once dominated this market sector; however, its applications tend to be limited by its transmission distance and its lack of network-level backhaul. Thus, additional labor efforts are needed to implement a low-maintenance automated system. On the other hand, having an AMP device in a wireless local area network (WLAN) , which can directly connect to the network, can enable a significant amount of applications and reduce the labor cost. An ideal AMP device would be a low-cost and low-power consuming device. Moreover, coexistence with IEEE 802.11 standard is very important. Therefore, there is a need for a solution of AMP PPDU format designs for wireless communications.SUMMARY
[0005] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0006] An objective of the present disclosure is to provide schemes, concepts, designs, techniques, methods and apparatuses pertaining to AMP PPDU format designs for wireless communications. It is believed that aforementioned issue (s) may be avoided or otherwise alleviated by implementation of one or more of the various proposed schemes described herein. For instance, implementations of one or more of the novel AMP PPDU format designs under the proposed schemes may enhance coexistence with IEEE 802.11be+ STAs.
[0007] In one aspect, a method may involve a processor of an apparatus performing a wireless communication by: (i) generating and transmitting a PPDU; or (ii) receiving and processing the PPDU. The PPDU may include a legacy preamble followed by an AMP package.
[0008] In another aspect, an apparatus may include a transceiver configured to communicate wirelessly and a processor coupled to the transceiver. The processor may perform a wireless communication by: (i) generating and transmitting a PPDU; or (ii) receiving and processing the PPDU. The PPDU may include a legacy preamble followed by an AMP package.
[0009] It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as, Wi-Fi, the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies such as, for example and without limitation, Bluetooth, ZigBee, 5th Generation (5G) / New Radio (NR) , Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, Internet-of-Things (IoT) , Industrial IoT (IIoT) and narrowband IoT (NB-IoT) . Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation to clearly illustrate the concept of the present disclosure.
[0011] FIG. 1 is a diagram of an example network environment in which various solutions and schemes in accordance with the present disclosure may be implemented.
[0012] FIG. 2 is a diagram of an example scenario under a proposed scheme in accordance with the present disclosure.
[0013] FIG. 3 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0014] FIG. 4 is a diagram of an example design under a proposed scheme in accordance with the present disclosure.
[0015] FIG. 5 is a block diagram of an example communication system under a proposed scheme in accordance with the present disclosure.
[0016] FIG. 6 is a flowchart of an example process under a proposed scheme in accordance with the present disclosure. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0017] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure 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 description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview
[0018] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to AMP PPDU format designs for wireless communications. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0019] FIG. 1 illustrates an example network environment 100 in which various solutions and schemes in accordance with the present disclosure may be implemented. FIG. 2 ~ FIG. 6 illustrate examples of implementation of various proposed schemes in network environment 100 in accordance with the present disclosure. The following description of various proposed schemes is provided with reference to FIG. 1 ~ FIG. 6.
[0020] Referring to FIG. 1, network environment 100 may involve at least a STA 110 communicating wirelessly with a STA 120. Each of STA 110 and STA 120 may be an or otherwise function as an access point (AP) STA or, alternatively, a non-AP STA. STA 110 and STA 120 may be configured or otherwise capable to operate in accordance with the same or different IEEE 802.11 standard (s) (e.g., IEEE 802.11be and future-developed standards) . Each of STA 110 and STA 120 may be configured to communicate with each other by utilizing the techniques pertaining to AMP PPDU format designs for wireless communications in accordance with various proposed schemes described below. It is noteworthy that, while the various proposed schemes may be individually or separately described below, in actual implementations some or all of the proposed schemes may be utilized or otherwise implemented jointly. Of course, each of the proposed schemes may be utilized or otherwise implemented individually or separately.
[0021] Under various proposed schemes in accordance with the present disclosure, to achieve better coexistence, a novel AMP PPDU format design may employ a preamble design similar to that in IEEE 802.11be (e.g., legacy short training field (L-STF) , legacy long training field (L-LTF) , legacy signaling field (L-SIG) , redundant legacy signaling field (RL-SIG) , and universal signaling fields (U-SIGs) ) . In a first option (Option 1) , for narrow bandwidth (BW) (e.g., BW < 20MHz) , an AMP package may be added after a first universal signaling field (U-SIG1) and a second universal signaling field (U-SIG2) . In a second option (Option 2) , for narrow BW (e.g., BW < 20MHz) , the AMP package may be added after U-SIG1, U-SIG2 and duplicate U-SIGs (e.g., a third U-SIG (U-SIG3) and a fourth U-SIG (U-SIG4) ) . The contents of the U-SIGs may include version independent fields (e.g., physical-layer (PHY) version, bandwidth, basic service set (BSS) color, downlink (DL) / uplink (UL) , and transmission opportunity (TXOP) ) . Moreover, under the proposed schemes, an indicator may be added for AMP PPDU in the legacy PHY preamble (20MHz) portion of the PPDU. For instance, in a first option (Option 1) , the indicator may be a 1-bit indicator which may reuse one or more of the U-SIG reserved bits (e.g., Validate and Disregard bits) . In a second option (Option 2) , the indicator may be indicated in the PHY version subfield using one or more of the reserved entries (e.g., PHY version = 7) .
[0022] Under the various proposed schemes in accordance with the present disclosure, an AMP AP may support IEEE 802.11be and beyond. For coexistence consideration, legacy preambles (e.g., in orthogonal frequency-division multiplexing (OFDM) format) may be applied in the AMP PPDU (e.g., at least the DL pre-High-Throughput (pre-HT) portion) , as this may help Wi-Fi STAs to perform back-off. Additionally, DL data portion (e.g., from an AP to a non-AP STA or from a reader to tag) may apply non-coherent waveforms (e.g., amplitude-shift keying (ASK) and / or on-off keying (OOK) ) to reduce power consumption. Accordingly, an IEEE 802.11ba-like PPDU (e.g., with a 20MHz preamble with 4MHz multi-carrier on-off keying (MC-OOK) data) may be a strong candidate for AMP DL applications.
[0023] FIG. 2 illustrates an example scenario 200 with respect to an AMP DL PPDU. Currently, the AMP DL design tends to focus on the IEEE 802.11ba-like waveform design, an example of which is shown in FIG. 2. More specifically, the AMP DL design includes a 20MHz OFDM spoofing preamble and a 4MHz MC-OOK AMP package.
[0024] It is noteworthy that, initially, only binary phase-shift keying (BPSK) -mark1 was added in a wake-up radio (WUR) . The design target of BPSK-mark1 is used to spoof IEEE 802.11 STAs to treat a WUR PPDU as an IEEE 802.11a PPDU, thereby an IEEE 802.11ax+ STA wastes its power if it receives a WUR PPDU. Since WUR data is narrowband and depends on its implementation, the next 4μs symbol duration after BSPK-mark1 may be treated as quadrature BPSK (Q-BPSK) . In that case, Very-High-Throughput (VHT) STAs could recognize a WUR PPDU as a VHT PPDU, but this may cause unspecified behavior of VHT STAs. Therefore, BPSK-mark2 is added to spoof VHT STAs.
[0025] Assuming that AMP applies IEEE 802.11ba-like PPDUs (e.g., 20MHz preamble with narrow BW AMP package) , there may be multiple issues that need to be considered. Firstly, many IEEE 802.11be+ STAs may apply target wake time (TWT) / restricted TWT (rTWT) for power saving. However, if they receive an overlapping basic service set (OBSS) AMP PPDU (if directly reusing IEEE 802.11ba PPDU) , the IEEE 802.11be+ STAs may waste their time to processing the data portion (by treating it as an IEEE 802.11a PPDU) and miss the intended Extremely-High-Throughput (EHT) and beyond PPDU in myBSS (e.g., intra-basic service set (intra-BSS) network allocation vector (NAV) ) . Secondly, BPSK-marks do not provide enough information to allow IEEE 802.11be+STAs to early determine the format of an incoming PPDU (e.g., PHY version, BSS color, DL / UL, TXOP) , and this tends to waste power of the third-party IEEE 802.11be+ STAs. Thirdly, there is a power drop between a legacy preamble and an OOK portion. On the other hand, in a fading channel, the received power of the on-duration may be lower than a certain threshold, which when combined with the off-duration can cause some STAs to detect channel idle. In such a case, the clear channel assessment (CCA) rule by the LENGTH field in the L-SIG may not be honored, as there is no medium access control (MAC) information for third-party STAs since they cannot decode OOK data portion. It is desired to have TXOP information (third-party STAs set NAV) to protect AMP PPDU reception. Moreover, some of the AMP applications tend to focus on short range (e.g., backscattering type tag) . As such, BSS color information in the spoofing preamble allows IEEE 802.11be+ STAs to utilize spatial reuse if it detects the AMP PPDU power to be under a certain threshold. Therefore, it is desirable to allow spoofing preamble to have multiple purposes. It is also desirable to allow IEEE 802.11be+ STAs to recognize an AMP PPDU.
[0026] FIG. 3 illustrates an example design 300 under a proposed scheme in accordance with the present disclosure. Under the proposed scheme, to achieve better coexistence, the design of the AMP PPDU format may employ the preamble design in IEEE 11be (including fields such as L-STF, L-LTF, L-SIG, RL-SIG, and U-SIGs) , which may provide additional information for IEEE 802.11be+ devices. As for the content in U-SIG, the Version Independent fields (and optionally one or more other fields such as, for example, PHY version, Bandwidth, BSS color, DL / UL, TXOP) may be kept in the AMP PPDU under the proposed scheme.
[0027] Under the proposed scheme, there may be two options. In a first option (Option 1) , for narrow BW (e.g., BW < 20MHz) , the AMP package may be added after U-SIG1 and USIG2. In a second option (Option 2) , for narrow BW (e.g., BW < 20MHz) , the AMP package may be added after added after U-SIG1, U-SIG2 and duplicate U-SIGs (e.g., U-SIG3 and U-SIG4) . The paired preamble and AMP waveforms under Option 2 may cover longer distance than that under Option 1. It is believed that design 300 may increase 4μs (or 12μs depending on the options) ; however, it is a very small portion as compared to a low-rate PPDU (e.g., with 2 ~ 3ms airtime) . Nevertheless, it is believed that design 300 may significantly improve the network performance. Thus, under the proposed scheme, the preamble of an AMP DL PPDU may include L-STF, L-LTF, L-SIG, RL-SIG and U-SIGs for AMP-enabled non-AP STAs and active transmitting non-AP AMP STAs in 2.4GHz.
[0028] FIG. 4 illustrates an example design 400 under a proposed scheme in accordance with the present disclosure. Under the proposed scheme, to achieve better power saving by allowing early termination (e.g., by allowing IEEE 802.11be+ STAs to recognize an AMP PPDU) , an indicator may be added in the design of the AMP PPDU format such as, for example, in the legacy PHY preamble (20MHz) portion. Under the proposed scheme, there may be two options. In a first option (Option 1), the indication may be a bit indicator, which may reuse U-SIG reserved bits (e.g., Validate and Disregard bits) . In a second option (Option 2) , the indication may be indicated in the PHY version by using the reserved entries (e.g., PHY version = 7) . For instance, in case that a Validate bit is used to indicate a given PPDU is an AMP PPDU, when an IEEE 11be STA receives the AMP PPDU, the STA may do early termination and defer the duration indicated in the PHY header.
[0029] Under the proposed scheme, other information may also be carried in U-SIG for AMP reception. For instance, one type of additional information that may be carried in U-SIG may be the AMP PPDU type. Additionally, or alternatively, another type of additional information that may be carried in U-SIG may be an indication of the Reference symbols and its length. Illustrative Implementations
[0030] FIG. 5 illustrates an example system 500 having at least an example apparatus 510 and an example apparatus 520 in accordance with an implementation of the present disclosure. Each of apparatus 510 and apparatus 520 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to AMP PPDU format designs for wireless communications, including the various schemes described above with respect to various proposed designs, concepts, schemes, systems and methods described above as well as processes described below. For instance, apparatus 510 may be implemented in STA 110 and apparatus 520 may be implemented in STA 120, or vice versa.
[0031] Each of apparatus 510 and apparatus 520 may be a part of an electronic apparatus, which may be a non-AP STA or an AP STA, such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus or a computing apparatus. When implemented in a STA, each of apparatus 510 and apparatus 520 may be implemented in a smartphone, a smart watch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. Each of apparatus 510 and apparatus 520 may also be a part of a machine type apparatus, which may be an IoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, each of apparatus 510 and apparatus 520 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. When implemented in or as a network apparatus, apparatus 510 and / or apparatus 520 may be implemented in a network node, such as an AP in a WLAN.
[0032] In some implementations, each of apparatus 510 and apparatus 520 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, 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 the various schemes described above, each of apparatus 510 and apparatus 520 may be implemented in or as a STA or an AP. Each of apparatus 510 and apparatus 520 may include at least some of those components shown in FIG. 5 such as a processor 512 and a processor 522, respectively, for example. Each of apparatus 510 and apparatus 520 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of apparatus 510 and apparatus 520 are neither shown in FIG. 5 nor described below in the interest of simplicity and brevity.
[0033] In one aspect, each of processor 512 and processor 522 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 a singular term “a processor” is used herein to refer to processor 512 and processor 522, each of processor 512 and processor 522 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of processor 512 and processor 522 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, 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 varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of processor 512 and processor 522 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks including those pertaining to AMP PPDU format designs for wireless communications in accordance with various implementations of the present disclosure.
[0034] In some implementations, apparatus 510 may also include a transceiver 516 coupled to processor 512. Transceiver 516 may include a transmitter capable of wirelessly transmitting and a receiver capable of wirelessly receiving data. In some implementations, apparatus 520 may also include a transceiver 526 coupled to processor 522. Transceiver 526 may include a transmitter capable of wirelessly transmitting and a receiver capable of wirelessly receiving data. It is noteworthy that, although transceiver 516 and transceiver 526 are illustrated as being external to and separate from processor 512 and processor 522, respectively, in some implementations, transceiver 516 may be an integral part of processor 512 as a system on chip (SoC) , and transceiver 526 may be an integral part of processor 522 as a SoC.
[0035] In some implementations, apparatus 510 may further include a memory 514 coupled to processor 512 and capable of being accessed by processor 512 and storing data therein. In some implementations, apparatus 520 may further include a memory 524 coupled to processor 522 and capable of being accessed by processor 522 and storing data therein. Each of memory 514 and memory 524 may include a type of random-access memory (RAM) such as dynamic RAM (DRAM) , static RAM (SRAM) , thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM) . Alternatively, or additionally, each of memory 514 and memory 524 may include a type of read-only memory (ROM) such as mask ROM, programmable ROM (PROM) , erasable programmable ROM (EPROM) and / or electrically erasable programmable ROM (EEPROM) . Alternatively, or additionally, each of memory 514 and memory 524 may include a type of non-volatile random-access memory (NVRAM) such as flash memory, solid-state memory, ferroelectric RAM (FeRAM) , magnetoresistive RAM (MRAM) and / or phase-change memory.
[0036] Each of apparatus 510 and apparatus 520 may be a communication entity capable of communicating with each other using various proposed schemes in accordance with the present disclosure. For illustrative purposes and without limitation, a description of capabilities of apparatus 510, as STA 110, and apparatus 520, as STA 120, is provided below in the context of example process 600. It is noteworthy that, although a detailed description of capabilities, functionalities and / or technical features of either of apparatus 510 and apparatus 520 is provided below, the same may be applied to the other of apparatus 510 and apparatus 520 although a detailed description thereof is not provided solely in the interest of brevity. It is also noteworthy that, although the example implementations described below are provided in the context of WLAN, the same may be implemented in other types of networks. Illustrative Processes
[0037] FIG. 6 illustrates an example process 600 in accordance with an implementation of the present disclosure. Process 600 may represent an aspect of implementing various proposed designs, concepts, schemes, systems and methods described above. More specifically, process 600 may represent an aspect of the proposed concepts and schemes pertaining to AMP PPDU format designs for wireless communications in accordance with the present disclosure. Process 600 may include one or more operations, actions, or functions as illustrated by one or more of blocks 610 as well as sub-blocks 612 and 614. Although illustrated as discrete blocks, various blocks of process 600 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks / sub-blocks of process 600 may be executed in the order shown in FIG. 6 or, alternatively, in a different order. Furthermore, one or more of the blocks / sub-blocks of process 600 may be executed repeatedly or iteratively. Process 600 may be implemented by or in apparatus 510 and apparatus 520 as well as any variations thereof. Solely for illustrative purposes and without limiting the scope, process 600 is described below in the context of apparatus 510 implemented in or as STA 110 functioning as a non-AP STA and apparatus 520 implemented in or as STA 120 functioning as an AP STA of a wireless network such as a WLAN in network environment 100 in accordance with one or more of IEEE 802.11 standards. Process 600 may begin at block 610.
[0038] At 610, process 600 may involve processor 512 of apparatus 510 performing, via transceiver 516, a wireless communication (e.g., with apparatus 520) involving a PPDU, which may include a legacy preamble followed by an AMP package. The performing of the wireless communication may be represented by 612 and 614.
[0039] At 612, process 600 may involve processor 512 generating and transmitting the PPDU.
[0040] At 614, process 600 may involve processor 512 receiving and processing the PPDU.
[0041] In some implementations, the legacy preamble may include a L-STF, a L-LTF, a L-SIG, a RL-SIG and at least two U-SIGs. In some implementations, a content of each of the at least two U-SIGs may include one or more version independent fields. In some implementations, the one or more version independent fields may include at least one of a PHY version field, a Bandwidth field, a BSS color field, a DL / UL field, and a TXOP field. In some implementations, at least one of the at least two U-SIGs may carry information for AMP reception, and wherein the information including either or both of: (a) an AMP PPDU type; and (b) an indication of reference symbols and a length thereof.
[0042] In some implementations, the AMP package may include a narrowband AMP package. In some implementations, the narrowband AMP package may include a 4MHz AMP package, and the legacy preamble may include a 20MHz preamble.
[0043] In some implementations, the PPDU may include an indication in the legacy preamble indicating that PPDU is an AMP PPDU. In some implementations, the indication may include a bit indicator that reuses one or more U-SIG reserved bits. Alternatively, or additionally, the indication may be indicated in a PHY version using one or more reserved entries. Additional Notes
[0044] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely examples, 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. Hence, 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 couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.
[0045] Further, with respect to the use of substantially any plural and / or singular terms 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. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0046] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art 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” and / 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 introduce claim recitations. In addition, even if a specific number of an 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. Furthermore, 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 the convention, e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, 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 the convention, e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, 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 virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, 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” will be understood to include the possibilities of “A” or “B” or “A and B. ”
[0047] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various 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, comprising:performing, by a processor of an apparatus, a wireless communication by:generating and transmitting a physical-layer protocol data unit (PPDU) ; orreceiving and processing the PPDU,wherein the PPDU comprises a legacy preamble followed by an ambient power (AMP) package, andwherein the legacy preamble comprises a legacy short training field (L-STF) , a legacy long training field (L-LTF) , a legacy signaling field (L-SIG) , a redundant legacy signaling field (RL-SIG) and at least two universal signaling fields (U-SIGs) .2.The method of Claim 1, wherein a content of each of the at least two U-SIGs comprises one or more version independent fields.3.The method of Claim 2, wherein the one or more version independent fields comprise at least one of a physical-layer (PHY) version field, a Bandwidth field, a basic service set (BSS) color field, a downlink (DL) / uplink (UL) field, and a transmission opportunity (TXOP) field.4.The method of Claim 1, wherein at least one of the at least two U-SIGs carries information for AMP reception, and wherein the information comprises either or both of:an AMP PPDU type; andan indication of reference symbols and a length thereof.5.The method of Claim 1, wherein the AMP package comprises a narrowband AMP package.6.The method of Claim 5, wherein the narrowband AMP package comprises a 4MHz AMP package, and wherein the legacy preamble comprises a 20MHz preamble.7.The method of Claim 1, wherein the PPDU comprises an indication in the legacy preamble indicating that PPDU is an AMP PPDU.8.The method of Claim 7, wherein the indication comprises a bit indicator that reuses one or more universal signaling field (U-SIG) reserved bits.9.The method of Claim 7, wherein the indication is indicated in a physical\-layer (PHY) version using one or more reserved entries.10.An apparatus, comprising:a transceiver configured to communicate wirelessly; anda processor coupled to the transceiver and configured to perform operations comprising:performing, via the transceiver, a wireless communication by:generating and transmitting a physical-layer protocol data unit (PPDU) ; orreceiving and processing the PPDU,wherein the PPDU comprises a legacy preamble followed by an ambient power (AMP) package, andwherein the legacy preamble comprises a legacy short training field (L-STF) , a legacy long training field (L-LTF) , a legacy signaling field (L-SIG) , a redundant legacy signaling field (RL-SIG) and at least two universal signaling fields (U-SIGs) .11.The apparatus of Claim 10, wherein a content of each of the at least two U-SIGs comprises one or more version independent fields.12.The apparatus of Claim 11, wherein the one or more version independent fields comprise at least one of a physical-layer (PHY) version field, a Bandwidth field, a basic service set (BSS) color field, a downlink (DL) / uplink (UL) field, and a transmission opportunity (TXOP) field.13.The apparatus of Claim 10, wherein at least one of the at least two U-SIGs carries information for AMP reception, and wherein the information comprises either or both of:an AMP PPDU type; andan indication of reference symbols and a length thereof.14.The apparatus of Claim 10, wherein the AMP package comprises a narrowband AMP package.15.The apparatus of Claim 14, wherein the narrowband AMP package comprises a 4MHz AMP package, and wherein the legacy preamble comprises a 20MHz preamble.16.The apparatus of Claim 10, wherein the PPDU comprises an indication in the legacy preamble indicating that PPDU is an AMP PPDU.17.The apparatus of Claim 16, wherein the indication comprises a bit indicator that reuses one or more universal signaling field (U-SIG) reserved bits.18.The apparatus of Claim 16, wherein the indication is indicated in a physical\-layer (PHY) version using one or more reserved entries.