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WO-2026091107-A1 - COMMUNICATION METHODS AND APPARATUSES, ELECTRONIC DEVICES, AND RELATED PRODUCTS

WO2026091107A1WO 2026091107 A1WO2026091107 A1WO 2026091107A1WO-2026091107-A1

Abstract

The present disclosure provides a communication method and apparatus, an electronic device, and related products. The communication method includes: receiving an AMP frame that initializes a slot counter; and transmitting, according to the slot counter, a first AMP response that carries first information indicating an RFID tag.

Inventors

  • CHITRAKAR, ROJAN
  • HUANG, LEI
  • LI, YUNBO

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260507
Application Date
20241101

Claims (20)

  1. A communication method, comprising: receiving a first ambient power (AMP) frame that initializes a slot counter; and transmitting, according to the slot counter, a first AMP response that carries first information indicating a radio frequency identification (RFID) tag.
  2. The method of claim 1, wherein after the receiving a first AMP frame, the method further comprises: generating a first RFID command.
  3. The method of claim 2, further comprising: initializing the slot counter according to the first RFID command.
  4. The method of claim 2 or 3, wherein the generating a first RFID command comprises: generating the first RFID command by an AMP processing portion.
  5. The method of any one of claims 1 to 4, wherein the first AMP frame carries one or more of: a parameter indicating a range of values for the slot counter; a parameter indicating a response type of the first AMP frame; or parameters for indicating access information and link information for the RFID tag.
  6. The method of any one of claims 1 to 4, wherein the first AMP frame comprises a first AMP Poll frame, and the first AMP Poll frame comprises one or more of: a first field, indicating a first type of a random-access session that is indicated by the first AMP Poll frame; a second field, indicating one or more of: a parameter that indicates a range of values for the slot counter; a parameter that indicates a response type of the first AMP frame, or parameters that indicate access information for the RFID tag; or a third field, indicating parameters that indicate link information for the RFID tag.
  7. The method of claim 6, wherein the second field further indicates a parameter that indicates whether a cyclic redundancy check (CRC) is added to the first AMP response.
  8. The method of claim 6 or 7, wherein the third field further indicates a parameter that indicates a frequency offset of the first AMP response from a frequency of a carrier signal, and the carrier signal is received and used by the RFID tag for obtaining power or for backscattering a response of the RFID tag.
  9. The method of any one of claims 6 to 8, further comprising: receiving a second AMP Poll frame that indicates a second type of the random-access session; and ignoring the second AMP Poll frame.
  10. The method of any one of claims 5 to 9, wherein the response type of the first AMP frame comprises a 16-bits random number (RN16) and a parameter that indicates the response type of the first AMP frame is set to zero to indicate RN16.
  11. The method of any one of claims 1 to 10, further comprising: generating a second RFID command that decrements the slot counter, in a case where a slot boundary is reached and no signal is received.
  12. The method of any one of claims 1 to 10, further comprising: receiving a second AMP frame that continues a random-access session, wherein the random-access session is indicated by the first AMP frame; and generating a second RFID command that decrements the slot counter.
  13. The method of any one of claims 1 to 11, further comprising: receiving an AMP downlink signal that starts a slot; and generating a second RFID command that decrements the slot counter.
  14. The method of any one of claims 1 to 13, further comprising: receiving a third AMP frame that carries the first information; and transmitting a second AMP response that carries second information indicating the RFID tag, wherein the first information is generated randomly and valid for a period of time, and the second information is read from a memory of the RFID tag.
  15. The method of claim 14, wherein after the receiving a third AMP frame, the method further comprises: generating a third RFID command that obtains the second information.
  16. The method of claim 14 or 15, wherein the third AMP frame further carries a parameter indicating a response type of the third AMP frame.
  17. The method of any one of claims 1 to 16, further comprising: receiving a fourth AMP frame that carries a fourth RFID command, wherein the fourth RFID command sets a flag for a random-access session to a preset value, the random-access session is indicated by the first AMP frame, and the preset value indicates a persistence of the random-access session.
  18. The method of claim 17, further comprising: receiving a fifth AMP frame that carries the first information; and transmitting a third AMP response that indicates the RFID tag handling the first information.
  19. The method of claim 18, wherein after receiving a fifth AMP frame, the method further comprises: generating, a fifth RFID command that verifies whether the RFID tag handles the first information.
  20. The method of claim 18 or 19, wherein the fifth AMP frame further carries a parameter indicating a response type of the fifth AMP frame.

Description

COMMUNICATION METHODS AND APPARATUSES, ELECTRONIC DEVICES, AND RELATED PRODUCTS TECHNICAL FIELD The present disclosure relates generally to the field of wireless communication technologies, and more particularly to communication methods and apparatuses, electronic devices, and related products. BACKGROUND Wireless local area network (WLAN) applications have been deployed in many market segments, including the consumer electronics market and the rapidly-growing Internet of Things (IoT) market. IoT devices in WLAN are typically powered using batteries with a limited lifespan. Consequently, many applications are still not considered by WLAN IoT technologies due to the limitations of these batteries. Ambient power (AMP) communication is a technology that enables battery-free communication. The operation of this technology relies on energy harvested from a variety of sources, including radio waves, light (e.g. sunlight) , motion, and heat, allowing the removal of batteries. Therefore, how to implement AMP communication in WLAN is an urgent problem to be solved. SUMMARY Embodiments of the present disclosure provide communication methods and apparatuses, electronic devices, and related products. According to a first aspect, a communication method is provided. The method may be performed by a tag (or a chip, module, or circuitry of the tag) . The method may include: receiving an AMP frame that initializes a slot counter; and transmitting, according to the slot counter, a first AMP response that carries first information indicating an RFID tag. In the communication method according to one or more embodiments, the AMP reader transmits the first AMP frame that initializes the slot counter and the RFID tag may receive the first AMP frame. Furthermore, the RFID tag transmits, according to the slot counter, the first AMP response that carries the first information indicating the RFID tag, and the AMP reader may receive the first AMP response. By the AMP frame and the AMP response, the first information indicating the RFID tag may be obtained. Therefore, the AMP communication is used as much as possible. Since the AMP communication is more efficient than the RFID protocol, the communication efficiency may be improved and the implementation complexity may be reduced. In a possible implementation, after the receiving a first AMP frame, the method further includes: generating a first RFID command. Therefore, in the communication method according to one or more embodiments, the first RFID command is generated upon receiving the first AMP frame, so that the first AMP frame may not be a specific frame used for encapsulating RFID commands and various types of AMP frames may be adapted to the RFID protocol. Since the AMP communication is more efficient than the RFID protocol, the AMP frames in the AMP communication may be used as much as possible, and the communication efficiency may be improved. Furthermore, compared to the specific frame used for encapsulating RFID commands, the frame complexity in communication may be reduced. In a possible implementation, the method further includes: initializing the slot counter according to the first RFID command. The RFID tag may initialize the slot counter randomly according to the first RFID command. During initializing the slot counter randomly, the slot counter may be initialized to zero or other value. A range of the initialized value of the slot counter is defined by the first AMP frame. That is, the slot counter may be initialized within the range. In the communication method according to one or more embodiments, the slot counter may be initialized according to the first RFID command and the corresponding RFID action is started. In a possible implementation, the generating a first RFID command includes: generating the first RFID command by an AMP processing portion. That is, the AMP processing portion receives the first AMP frame and generates the first RFID command upon receiving the AMP frame. In the communication method according to one or more embodiments, the AMP processing portion is utilized to generate the first RFID command, and there is no need to add other hardware component for the RFID tag, so that the cost of the RFID tag may be reduced. In a possible implementation, the first AMP frame carries one or more of: a parameter indicating a range of values for the slot counter; a parameter indicating a response type of the first AMP frame; or parameters for indicating access information and link information for the RFID tag. In the communication method according to one or more embodiments, the first AMP frame carries one or more of the parameter indicating the range of values for the slot counter, the parameter indicating the response type of the first AMP frame, or the parameters indicating access information and link information for the RFID tag, so that the RFID tag may indicate the response type of the first AMP frame and generate the corresponding RFID command. In a pos