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US-20260128622-A1 - SYSTEM AND METHOD FOR AMBIENT POWER (AMP) TRANSMISSION

US20260128622A1US 20260128622 A1US20260128622 A1US 20260128622A1US-20260128622-A1

Abstract

Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to generate an AMbient Power (AMP) transmission element, which contains information that indicates a frame format used in the AMP transmission element and a wireless transceiver configured to wirelessly transmit the AMP transmission element.

Inventors

  • Liwen Chu
  • Rui Cao
  • Xilin Cheng
  • Somayeh Khosroazad
  • Hongyuan Zhang

Assignees

  • NXP USA, INC.

Dates

Publication Date
20260507
Application Date
20251106

Claims (20)

  1. 1 . A wireless device comprising: a controller configured to generate an AMbient Power (AMP) transmission element, which contains information that indicates a frame format used in the AMP transmission element; and a wireless transceiver configured to wirelessly transmit the AMP transmission element.
  2. 2 . The wireless device of claim 1 , wherein the wireless device comprises a wireless access point (AP), and wherein the wireless AP comprises an AMP tag reader.
  3. 3 . The wireless device of claim 1 , wherein the wireless device comprises a non-access point (AP) station (STA), and wherein the non-AP STA comprises an AMP tag.
  4. 4 . The wireless device of claim 1 , wherein the AMP transmission element comprises a Physical Layer Protocol Data Unit (PPDU), and wherein the PPDU comprises a Physical Layer Service Data Unit (PSDU) that carries a frame in the indicated frame format.
  5. 5 . The wireless device of claim 4 , wherein the PPDU carries a physical (PHY) header, and wherein the PHY header contains the information that indicates a tag type of the frame carried in the PSDU.
  6. 6 . The wireless device of claim 5 , wherein the frame comprises a frame header field, an optional frame body, and a frame check sequence (FCS).
  7. 7 . The wireless device of claim 6 , wherein the frame header field contains a frame control field, a receiver address (RA) identification (ID) field and/or a transmitter address (TA) ID field, and an optional extended control field.
  8. 8 . The wireless device of claim 7 , wherein the frame control field contains a frame type field and an uplink (UL) data rate field.
  9. 9 . The wireless device of claim 8 , wherein the UL data rate field is reserved in a frame transmitted by a station (STA).
  10. 10 . The wireless device of claim 8 , wherein the UL data rate field is reserved in a frame transmitted by an access point (AP) that solicits an acknowledgement (Ack).
  11. 11 . The wireless device of claim 8 , wherein the frame of a frame type carries a radio frequency identification (RFID) message.
  12. 12 . The wireless device of claim 5 , wherein frames of different tag types have different frame formats.
  13. 13 . The wireless device of claim 8 , wherein an access point (AP) does not transmit an acknowledgement (Ack) to a station (STA) after receiving a response from the STA.
  14. 14 . An AMbient Power (AMP) reader comprising: a controller configured to generate an AMP transmission element, which contains information that indicates a frame format used in the AMP transmission element; and a wireless transceiver configured to wirelessly transmit the AMP transmission element to an AMP tag.
  15. 15 . A method for wireless communications, the method comprising: at a wireless device, generating an AMbient Power (AMP) transmission element, which contains information that indicates a frame format used in the AMP transmission element; and from the wireless device, wirelessly transmitting the AMP transmission element.
  16. 16 . The method of claim 15 , wherein the wireless device comprises a wireless access point (AP), and wherein the wireless AP comprises an AMP tag reader.
  17. 17 . The method of claim 15 , wherein the wireless device comprises a non-access point (AP) station (STA), and wherein the non-AP STA comprises an AMP tag.
  18. 18 . The method of claim 15 , wherein the AMP transmission element comprises a Physical Layer Protocol Data Unit (PPDU), and wherein the PPDU comprises a Physical Layer Service Data Unit (PSDU) that carries a frame in the indicated frame format.
  19. 19 . The method of claim 18 , wherein the PPDU carries a physical (PHY) header, and wherein the PHY header contains the information that indicates a tag type of the frame carried in the PSDU.
  20. 20 . The method of claim 19 , wherein the frame comprises a frame header field, an optional frame body, and a frame check sequence (FCS).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is entitled to the benefit of U.S. Provisional patent application Ser. No. 63/716,878, filed on Nov. 6, 2024 and U.S. Provisional patent application Ser. No. 63/810,245, filed on May 22, 2025, the contents of each of which are incorporated by reference herein in their entireties. SUMMARY Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to generate an AMbient Power (AMP) transmission element, which contains information that indicates a frame format used in the AMP transmission element (e.g., tag type information to indicate one of different frame formats for different tag types) and a wireless transceiver configured to wirelessly transmit the AMP transmission element. Other embodiments are also disclosed. In an embodiment, the wireless device includes a wireless access point (AP), and the wireless AP includes an AMP tag reader. In an embodiment, the wireless device includes a non-access point (AP) station (STA), and the non-AP STA includes an AMP tag. In an embodiment, the AMP transmission element includes a Physical Layer Protocol Data Unit (PPDU), and the PPDU includes a Physical Layer Service Data Unit (PSDU) that carries a frame in the indicated frame format. In an embodiment, the PPDU carries a physical (PHY) header, and the PHY header contains the information that indicates a tag type of the frame carried in the PSDU. In an embodiment, the frame includes a frame header field, an optional frame body, and a frame check sequence (FCS). In an embodiment, the frame header field contains a frame control field, a receiver address (RA) identification (ID) field and/or a transmitter address (TA) ID field, and an optional extended control field. In an embodiment, the frame control field contains a frame type field and an uplink (UL) data rate field. In an embodiment, the UL data rate field is reserved in a frame transmitted by a station (STA). In an embodiment, the UL data rate field is reserved in a frame transmitted by an access point (AP) that solicits an acknowledgement (Ack). In an embodiment, the frame of a frame type carries a radio frequency identification (RFID) message. In an embodiment, frames of different tag types have different frame formats. In an embodiment, an access point (AP) does not transmit an acknowledgement (Ack) to a station (STA) after receiving a response from the STA. In an embodiment, an AMbient Power (AMP) reader includes a controller configured to generate an AMP transmission element, which contains information that indicates a frame format used in the AMP transmission element, and a wireless transceiver configured to wirelessly transmit the AMP transmission element to an AMP tag. In an embodiment, a method for wireless communications includes at a wireless device, generating an AMbient Power (AMP) transmission element, which contains information that indicates a frame format used in the AMP transmission element, and from the wireless device, wirelessly transmitting the AMP transmission element. In an embodiment, the wireless device includes a wireless access point (AP), and the wireless AP includes an AMP tag reader. In an embodiment, the wireless device includes a non-access point (AP) station (STA), and the non-AP STA includes an AMP tag. In an embodiment, the AMP transmission element includes a Physical Layer Protocol Data Unit (PPDU), and the PPDU includes a Physical Layer Service Data Unit (PSDU) that carries a frame in the indicated frame format. In an embodiment, the PPDU carries a physical (PHY) header, and the PHY header contains the information that indicates a tag type of the frame carried in the PSDU. In an embodiment, the frame includes a frame header field, an optional frame body, and a frame check sequence (FCS). Other aspects in accordance with the disclosure will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrated by way of example of the principles of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 depicts a wireless communications system in accordance with example embodiments. FIG. 2 depicts a wireless device in accordance with example embodiments. FIG. 3 depicts a wireless device with multiple wireless transceivers in accordance with example embodiments. FIG. 4 depicts an example of a frame format. FIG. 5 depicts an example of a Wireless Local Area Network (WLAN)(PV0) control frame format. FIG. 6 depicts an example of a PV0 data frame format. FIG. 7 depicts an example of a PV0 management frame format. FIG. 8 depicts an example of an Institute of Electrical and Electronics Engineers (IEEE) 802.11ah (PV1) frame format. FIG. 9 depicts an example of a Wakeup Radio (WUR) frame format. FIG. 10 depicts an example of a Media Access Control (MAC) header of the WUR frame format depicted in FIG. 9. FIG. 11 illustrates an IEEE 802.11 bp com