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EP-4736359-A1 - COMPRESSED LONG RANGE PHYSICAL LAYER PROTOCOL DATA UNIT (PPDU)

EP4736359A1EP 4736359 A1EP4736359 A1EP 4736359A1EP-4736359-A1

Abstract

A first station (STA) receives from a second STA a first frame and transmits a physical layer protocol data unit (PPDU) to the second STA. Based on the first frame comprising an indication for the first STA to use a first mode to transmit the PPDU, the first STA transmits the PPDU using the first mode and a first carrier frequency offset of the PPDU is based on a second carrier frequency offset of the first frame. The first mode may comprise an enhanced long range (ELR) operation mode.

Inventors

  • LANANTE, Leonardo Alisasis
  • KIM, JEONGKI
  • Dinan, Esmael Hejazi
  • ZHANG, JIAYI
  • ERKUCUK, SERHAT
  • BAYKAS, TUNCER

Assignees

  • Ofinno, LLC

Dates

Publication Date
20260506
Application Date
20250616

Claims (20)

  1. 1. A method comprising: receiving, by a station (STA) from an access point (AP), a first frame comprising an indication of whether the AP enables reception of enhanced long range (ELR) PPDUs; receiving, by the STA from the AP, a beacon frame; determining, by the STA, a first carrier frequency offset of the beacon frame; and based on the indication indicating that the AP enables reception of ELR PPDUs, transmitting, by the STA to the AP, an ELR PPDU, wherein a second carrier frequency offset of the ELR PPDU is based on the first carrier frequency offset of the beacon frame.
  2. 2. A method comprising: receiving, by a first station (STA) from a second STA, a first frame; and transmitting, by the first STA to the second STA, a physical layer protocol data unit (PPDU), wherein, based on the first frame comprising an indication for the first STA to use a first mode to transmit the PPDU, a second carrier frequency offset of the PPDU is based on a first carrier frequency offset of the first frame.
  3. 3. The method of claim 2, wherein the first frame comprises a beacon frame.
  4. 4. The method of claim 2, wherein the first frame comprises an action frame.
  5. 5. The method of any of claims 2-4, wherein the indication indicates that the second STA enables reception of PPDUs transmitted according to the first mode.
  6. 6. The method of claim 5, wherein the first mode comprises an enhanced long range (ELR) operation mode.
  7. 7. The method of claim 6, wherein the first frame comprises an ELR field, and wherein the ELR field comprises the indication.
  8. 8. The method of claim 5, wherein the first STA using the first mode comprises the first STA using a first format for the PPDU.
  9. 9. The method of claim 8, wherein the first format is an enhanced long range (ELR) ultra high reliability (UHR) PPDU format.
  10. 10. The method of any of claims 8-9, wherein the first format comprises: a non-high throughput (non-HT) short training field (L-STF); a non-HT long training field (L-LTF); a non-HT signal (L-SIG) field; a repeated L-SIG (RL-SIG) field; and a universal signal (U-SIG) field.
  11. 11 . The method of claim 10, wherein the U-SIG field comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols.
  12. 12. The method of claim 11 , wherein the plurality of OFDM symbols comprises 4 OFDM symbols.
  13. 13. The method of any of claims 5-12, wherein the second carrier frequency offset of the PPDU is based on the first carrier frequency offset of the first frame based on the first frame indicating the first mode.
  14. 14. The method of any of claims 2-13, further comprising determining, by the first STA, a first symbol clock offset of the first frame.
  15. 15. The method of claim 14, wherein a second symbol clock offset of the PPDU is based on the first symbol clock offset of the first frame.
  16. 16. The method of any of claims 2-15, wherein the second carrier frequency offset is a negative of the first carrier frequency offset.
  17. 17. The method of any of claims 2-16, further comprising pre-compensating the PPDU for carrier frequency offset using the second carrier frequency offset.
  18. 18. The method of any of claims 2-17, wherein the first frame indicates a first transmit power used to transmit the first frame.
  19. 19. The method of claim 18, wherein the first frame comprises a transmit power field, and wherein the transmit power field indicates the first transmit power.
  20. 20. The method of any of claims 18-19, further comprising determining, by the first STA, a pathloss of a channel from the second STA to the first STA.

Description

TITLE Compressed Long Range Physical Layer Protocol Data Unit (PPDU) CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 63/662,434, filed June 21 , 2024, which is hereby incorporated by reference in its entirety. BRIEF DESCRIPTION OF THE DRAWINGS [0002] Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings. [0003] FIG. 1 illustrates example wireless communication networks in which embodiments of the present disclosure may be implemented. [0004] FIG. 2 is a block diagram illustrating example implementations of a station (STA) and an access point (AP). [0005] FIG. 3 illustrates a non-High Throughput (non-HT) Physical Layer Protocol Data Unit (PPDU), a High Throughput (HT) mixed PPDU, and a Very High Throughput (VHT) PPDU. [0006] FIG. 4 illustrates a High Efficiency (HE) Single User (SU) PPDU, an HE Multi-User (MU) PPDU, and an HE Extended Range (ER) SU PPDU. [0007] FIG. 5 illustrates an Extremely High Throughput (EHT) Multi-user (MU) PPDU. [0008] FIG. 6 illustrates an example universal signal (U-SIG) field which may be used in an extended range (ER) PPDU. [0009] FIG. 7 illustrates an example management frame which may be used as an action frame. [0010] FIG. 8 illustrates a Link Measurement Request frame. [0011] FIG. 9 illustrates an example trigger frame. [0012] FIG. 10 illustrates an example Common Info field. [0013] FIG. 11 illustrates an example of using a trigger-based (TB) PPDU. [0014] FIG. 12 illustrates a non-HT Short Training field (L-STF) and a non-HT Long Training field (L-LTF). [0015] FIG. 13 illustrates an example extended long range (ELR) PPDU. [0016] FIG. 14 illustrates a legacy preamble that may be used in an ELR PPDU. [0017] FIG. 15 illustrates an example ELR PPDU according to an embodiment. [0018] FIG. 16 illustrates an example that highlights a potential problem that may arise using the example ELR PPDU of FIG. 15. [0019] FIG. 17 illustrates an example of a procedure using an ELR PPDU according to an embodiment. [0020] FIG. 18 illustrates an example of a procedure using an ELR PPDU according to an embodiment. [0021] FIG. 19 illustrates an example ELR field that may be used according to embodiments. [0022] FIG. 20 illustrates an example process according to an embodiment. [0023] FIG. 21 illustrates another example process according to an embodiment. DETAILED DESCRIPTION [0024] In the present disclosure, various embodiments are presented as examples of how the disclosed techniques may be implemented and/or how the disclosed techniques may be practiced in environments and scenarios. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the scope. After reading the description, it will be apparent to one skilled in the relevant art how to implement alternative embodiments. The present embodiments may not be limited by any of the described exemplary embodiments. The embodiments of the present disclosure will be described with reference to the accompanying drawings. Limitations, features, and/or elements from the disclosed example embodiments may be combined to create further embodiments within the scope of the disclosure. Any figures which highlight the functionality and advantages, are presented for example purposes only. The disclosed architecture is sufficiently flexible and configurable, such that it may be utilized in ways other than that shown. For example, the actions listed in any flowchart may be re-ordered or only optionally used in some embodiments. [0025] Embodiments may be configured to operate as needed. The disclosed mechanism may be performed when certain criteria are met, for example, in a station, an access point, a radio environment, a network, a combination of the above, and/or the like. Example criteria may be based, at least in part, on for example, wireless device or network node configurations, traffic load, initial system set up, packet sizes, traffic characteristics, a combination of the above, and/or the like. When the one or more criteria are met, various example embodiments may be applied. Therefore, it may be possible to implement example embodiments that selectively implement disclosed protocols. [0026] In this disclosure, “a” and “an” and similar phrases are to be interpreted as “at least one” and “one or more.” Similarly, any term that ends with the suffix “(s)” is to be interpreted as “at least one” and “one or more.” In this disclosure, the term “may” is to be interpreted as “may, for example.” In other words, the term “may” is indicative that the phrase following the term “may” is an example of one of a multitude of suitable possibilities that may, or may not, be employed by one or more of the various embodiments. The terms “comprises” and “consists of”, as used herein, enumerate one or more components of the element being described. T