# US 2025/0097776 A1 · Information transmission method and apparatus of backscatter communication, terminal, and network side device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0097776 A1 - Document ID: US20250097776A1 - Status: Published application - Kind: A1 - Application number: 18/964,458 - Filed: 2024-12-01 - Published: 2025-03-20 - Earliest claimed: 2022-06-01 - Assignees: Vivo Mobile Communication Co., Ltd. - Applicants: Vivo Mobile Communication Co., Ltd. - Inventors: Dongru LI; Kai WU - Web page: https://patentgrep.com/patent/US20250097776A1 ## CPC - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04W 28/18: Negotiating wireless communication parameters - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for information transmission of backscatter communication, a terminal, and a network side device are provided. The method includes: the terminal sends first information to the network side device, where the first information is used for configuration update or transmission adjustment related to backscatter communication, and the first information includes at least one of the following: inventory-related information; information related to backscattering of a backscatter device; or information related to a carrier wave or a control command. ## Claims ### Claim 1 A method for information transmission of backscatter communication, comprising: sending, by a terminal, first information to a network side device, wherein the first information is used for configuration update or transmission adjustment related to backscatter communication, and the first information comprises at least one of the following: inventory-related information; information related to backscattering of a backscatter device; or information related to a carrier wave or a control command. ### Claim 2 (depends on 1) The method according to claim 1, wherein the inventory-related information comprises at least one of the following: a recommended value of Q, wherein Q is a parameter used for managing a response probability of the backscatter device; a suggested value for increasing Q; a suggested value for reducing Q; an expected quantity of backscatter devices controlled by a control command at a time; a recommended value of N, wherein the terminal reports, after each N rounds of inventory, backscattering information received by the terminal to the network side device; or a recommended inventory method. ### Claim 3 (depends on 2) The method according to claim 2, wherein the recommended inventory method comprises at least one of the following: inventory of a single backscatter device; inventory of a plurality of backscatter devices; or whether the terminal participates in sending a specific control command to assist the network side device in performing inventory of the backscatter device. ### Claim 4 (depends on 1) The method according to claim 1, wherein the information related to backscattering of the backscatter device comprises at least one of the following: information on reception of backscattering information of the backscatter device; or transmission parameter adjustment information of the backscatter device. ### Claim 5 (depends on 4) The method according to claim 4, wherein the information on reception of backscattering information of the backscatter device comprises at least one of the following: statistics of a number of times of unsuccessful receptions of the backscattering information; statistics of a number of times of successful receptions of the backscattering information; or reason information of unsuccessful reception of the backscattering information. ### Claim 6 (depends on 1) The method according to claim 1, wherein the information related to a carrier wave or a control command comprises at least one of the following: transmission parameter adjustment information of the carrier wave or the control command; or format adjustment information of the control command. ### Claim 7 (depends on 4) The method according to claim 4, wherein the transmission parameter adjustment information comprises: a recommended value of a transmission parameter, or a recommended adjustment strategy for the transmission parameter. ### Claim 8 (depends on 7) The method according to claim 7, wherein the transmission parameter comprises at least one of the following: a time domain resource; a frequency domain resource; a transmitting power; a transmitting frequency band; a center frequency; a modulation scheme; or an encoding mode. ### Claim 9 (depends on 6) The method according to claim 6, wherein the format adjustment information of the control command comprises at least one of the following: a recommended channel length of the control command; a recommended code rate of control command encoding; or a recommended encoding mode of the control command. ### Claim 10 (depends on 1) The method according to claim 1, wherein a type of the first information is at least one of a buffer status report (BSR), a scheduling request (SR), or UE assistance information (UAI); or the first information is carried by an uplink resource which is configured by a high layer or dynamically indicated. ### Claim 11 (depends on 1) The method according to claim 1, wherein the sending, by a terminal, first information to a network side device comprises at least one of the following: periodically sending, by the terminal, the first information to the network side device; sending, by the terminal when triggered based on the expiry of a first timer, the first information to the network side device, which is triggered based on the expiry of a first timer; or sending, by the terminal, the first information to the network side device, which is triggered based on a first event. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first event comprises any one of the following: continuously or cumulatively receiving M1 pieces of backscattering information; continuously or cumulatively receiving backscattering information for N1 times; continuously or cumulatively receiving M2 pieces of backscattering information within a first time interval; continuously or cumulatively receiving backscattering information for N2 times within the first time interval; M3 pieces of continuous or cumulative unsuccessfully received backscattering information; N3 times of continuously or cumulatively unsuccessfully receiving backscattering information; M4 pieces of continuous or cumulative unsuccessfully received backscattering information within a second time interval; or N4 times of continuously or cumulatively unsuccessfully receiving backscattering information within the second time interval, wherein M1, M2, M3, M4, N1, N2, N3, and N4 are respectively integers greater than or equal to 1. ### Claim 13 (depends on 11) The method according to claim 11, wherein during the running of the first timer, the terminal does not send the first information, or when the terminal sends the first information, the first timer is restarted. ### Claim 14 A method for information transmission of backscatter communication, comprising: receiving, by a network side device, first information sent by a terminal participating in backscatter communication; and performing, by the network side device, configuration update or transmission adjustment related to backscatter communication based on the first information, wherein the first information comprises at least one of the following: inventory-related information; information related to backscattering of a backscatter device; or information related to a carrier wave or a control command. ### Claim 15 (depends on 14) The method according to claim 14, wherein the inventory-related information comprises at least one of the following: a recommended value of Q, wherein Q is a parameter used for managing a response probability of the backscatter device; a suggested value for increasing Q; a suggested value for reducing Q; an expected quantity of backscatter devices controlled by a control command at a time; a recommended value of N, wherein the terminal reports, after each N rounds of inventory, backscattering information of the backscatter device received by the terminal to the network side device; or a recommended inventory method. ### Claim 16 (depends on 15) The method according to claim 15, wherein the recommended inventory method comprises at least one of the following: inventory of a single backscatter device; inventory of a plurality of backscatter devices; or whether the terminal participates in sending a specific control command to assist the network side device in performing inventory of a backscatter device. ### Claim 17 (depends on 14) The method according to claim 14, wherein the information related to backscattering of a backscatter device comprises at least one of the following: information on reception of backscattering information of the backscatter device; or transmission parameter adjustment information of the backscatter device. ### Claim 18 (depends on 17) The method according to claim 17, wherein the information on reception of backscattering information of the backscatter device comprises at least one of the following: statistics of a number of times of unsuccessful receptions of the backscattering information; statistics of a number of times of successful receptions of the backscattering information; or reason information of unsuccessful reception of the backscattering information. ### Claim 19 (depends on 14) The method according to claim 14, wherein the information related to a carrier wave or a control command comprises at least one of the following: transmission parameter adjustment information of the carrier wave or the control command; or format adjustment information of the control command. ### Claim 20 A terminal, comprising: a memory storing a computer program; and a processor coupled to the memory and configured to execute the computer program to perform operations comprising: sending first information to a network side device, wherein the first information is used for configuration update or transmission adjustment related to backscatter communication, and the first information comprises at least one of the following: inventory-related information; information related to backscattering of a backscatter device; or information related to a carrier wave or a control command.