# US 12,764,666 B2 · Communication method and communications apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,666 B2 - Document ID: US12764666B2 - Status: Granted - Kind: B2 - Application number: 18/887,971 - Filed: 2024-09-17 - Published: 2025-01-09 - Granted: 2026-10-13 - Earliest claimed: 2022-03-17 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Zhisong Zuo; Weijie Xu - Web page: https://patentgrep.com/patent/US12764666B2 ## CPC - H04W 52/0261: {managing power supply demand, e.g. depending on battery level} - H04L 1/0061: {Error detection codes} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Disclosed are a communication method and a communications apparatus. The method includes: receiving, by a terminal device, a first downlink signal from a first device, where the terminal device is a zero-power terminal; and sending, by the terminal device, a first uplink signal to a second device according to the first downlink signal. ## Claims ### Claim 1 A communication method, comprising: receiving, by a terminal device, a first downlink signal from a first device, wherein the terminal device is a zero-power terminal; and sending, by the terminal device, a first uplink signal to a second device according to the first downlink signal; receiving, second downlink information from the second device, wherein the first downlink signal is obtained according to the second downlink information; and receiving, third downlink information from the second device, wherein the third downlink information is used to configure an identity of the first device. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first downlink signal carries first downlink information, and the first downlink information is used to trigger the terminal device to send an uplink signal; and after the receiving, by the terminal device, a first downlink signal from a first device, the method further comprises: demodulating, by the terminal device, the first downlink signal to obtain the first downlink information. ### Claim 3 (depends on 2) The method according to claim 2, wherein the first downlink information comprises identity information of the first device. ### Claim 4 (depends on 3) The method according to claim 3, wherein the first downlink information further comprises downlink data information; or uplink data request information, and the uplink data request information is used to request the terminal device to send uplink data information. ### Claim 5 (depends on 2) The method according to claim 2, wherein the demodulating, by the terminal device, the first downlink signal to obtain the first downlink information comprises: demodulating, by the terminal device, the first downlink signal to obtain the first downlink information in one or more manners of amplitude modulation, frequency modulation, or phase modulation; or demodulating, by the terminal device, the first downlink signal to obtain the first downlink information through cyclic redundancy check (CRC) demodulation. ### Claim 6 (depends on 2) The method according to claim 2, wherein the first uplink signal carries first uplink information, and the first uplink information comprises registration request information and/or uplink data information of the terminal device; or the first uplink information is used to indicate whether the terminal device properly receives downlink data information sent by the second device through the first device; or the first uplink information comprises uplink data information. ### Claim 7 (depends on 6) The method according to claim 6, wherein the first uplink information further comprises identity information of the first device and/or identity information of the terminal device. ### Claim 8 (depends on 6) The method according to claim 6, wherein before the sending, by the terminal device, a first uplink signal to a second device according to the first downlink signal, the method further comprises: modulating, by the terminal device, the first uplink information into the first uplink signal in one or more manners of amplitude modulation, frequency modulation, or phase modulation; or carrying, by the terminal device, the first uplink information in the first uplink signal through cyclic redundancy check (CRC); or carrying, by the terminal device, the first uplink information in the first uplink signal through a preamble. ### Claim 9 A terminal device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory to cause the terminal device to perform: receiving, a first downlink signal from a first device, wherein the terminal device is a zero-power terminal; and sending, a first uplink signal to a second device according to the first downlink signal; receiving, second downlink information from the second device, wherein the first downlink signal is obtained according to the second downlink information; and receiving, third downlink information from the second device, wherein the third downlink information is used to configure an identity of the first device. ### Claim 10 (depends on 9) The terminal device according to claim 9, wherein the first downlink signal carries first downlink information, and the first downlink information is used to trigger the terminal device to send an uplink signal; and after the receiving, a first downlink signal from a first device, the terminal device further comprises: demodulating, the first downlink signal to obtain the first downlink information. ### Claim 11 (depends on 10) The terminal device according to claim 10, wherein the first downlink information comprises identity information of the first device. ### Claim 12 (depends on 10) The terminal device according to claim 10, wherein the demodulating, the first downlink signal to obtain the first downlink information comprises: demodulating, the first downlink signal to obtain the first downlink information in one or more manners of amplitude modulation, frequency modulation, or phase modulation; or demodulating, the first downlink signal to obtain the first downlink information through cyclic redundancy check (CRC) demodulation. ### Claim 13 (depends on 10) The terminal device according to claim 10, wherein the first uplink signal carries first uplink information, and the first uplink information comprises registration request information and/or uplink data information of the terminal device; or the first uplink information is used to indicate whether the terminal device properly receives downlink data information sent by the second device through the first device; or the first uplink information comprises uplink data information. ### Claim 14 A communications apparatus, the communications apparatus is a first device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory to cause the first device to perform: sending, a first downlink signal to a terminal device, wherein the terminal device is a zero-power terminal, and the first downlink signal is used to trigger the terminal device to send an uplink signal to a second device; receiving, second downlink information from the second device, wherein the first downlink signal is obtained according to the second downlink information; and receiving, third downlink information from the second device, wherein the third downlink information is used to configure an identity of the first device. ### Claim 15 (depends on 14) The apparatus according to claim 14, wherein the first downlink signal carries first downlink information, and the first downlink information is used to trigger the terminal device to send an uplink signal; and before the sending, a first downlink signal to a terminal device, the apparatus comprises: modulating, the first downlink information into the first downlink signal. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein the first downlink information comprises identity information of the first device; or the first downlink information further comprises downlink data information; or uplink data request information, and the uplink data request information is used to request the terminal device to send uplink data information. ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein the modulating, the first downlink information into the first downlink signal comprises: modulating, the first downlink information into the first downlink signal in one or more manners of amplitude modulation, frequency modulation, or phase modulation; or carrying, the first downlink information in the first downlink signal through cyclic redundancy check (CRC); or carrying, the first downlink information in the first downlink signal through a preamble. ### Claim 18 (depends on 14) The apparatus according to claim 14, wherein the first device is connected to the second device in a wireless or wired manner.