# US 12,603,673 B2 · Frequency hopping and fixed frequency selection for ambient internet of things (IoT) devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,673 B2 - Document ID: US12603673B2 - Status: Granted - Kind: B2 - Application number: 18/632,067 - Filed: 2024-04-10 - Published: 2025-10-16 - Granted: 2026-04-14 - Earliest claimed: 2024-04-10 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail; Zhifei Fan; Chengjin Zhang; Robin Heydon; Joel Linsky - Web page: https://patentgrep.com/patent/US12603673B2 ## CPC - H04B 1/713: using frequency hopping - H04B 1/715: Interference-related aspects - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 52/0229: {where the received signal is a wanted signal} - H04W 52/0235: {where the received signal is a power saving command} - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Systems and techniques are provided for wireless communication. For example, a process can include determining to configure an energy harvesting device for frequency hopping based on detected signals of one or more other wireless systems; transmitting a wake-up signal, the wake-up signal including an indication for frequency hopping; receiving a first response from a first energy harvesting device on a first frequency channel; and receiving a second response from a second energy harvesting device on a second frequency channel. ## Claims ### Claim 1 A device of a first wireless system for wireless communications, comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor configured to: determine to configure an energy harvesting device for frequency hopping based on detected signals of one or more other wireless systems; transmit a wake-up signal, the wake-up signal including an indication for frequency hopping; receive a first response from the harvesting device on a first frequency channel; and receive a second response from the energy harvesting device on a second frequency channel based on a frequency hopping pattern. ### Claim 2 (depends on 1) The device of claim 1, wherein the energy harvesting device is configured to use a public band, and wherein, to determine to configure an energy harvesting device for frequency hopping, the at least one processor is configured to determine at least one of: signals of the other wireless systems are being transmitted on a frequency channel used by the energy harvesting device; or multiple wireless devices are operating on an unlicensed spectrum. ### Claim 3 (depends on 1) The device of claim 1, wherein the indication for frequency hopping comprises a public band used to transmit the wake-up signal. ### Claim 4 (depends on 1) The device of claim 1, wherein the indication for frequency hopping comprises a bit of the wake-up signal. ### Claim 5 (depends on 1) The device of claim 1, wherein the wake-up signal includes an indication of a frequency hopping pattern. ### Claim 6 (depends on 1) The device of claim 1, wherein the wake-up signal includes an indication of a response slot for the energy harvesting device. ### Claim 7 (depends on 6) The device of claim 6, wherein a frequency channel used by an energy harvesting device in response to the wake-up signal is based on the indicated response slot for the energy harvesting device. ### Claim 8 A method for wireless communications by a device of a first wireless system, comprising: determining to configure an energy harvesting device for frequency hopping based on detected signals of one or more other wireless systems; transmitting a wake-up signal, the wake-up signal including an indication for frequency hopping; receiving a first response from the energy-harvesting device on a first frequency channel; and receiving a second response from the energy harvesting device on a second frequency channel based on a frequency hopping pattern. ### Claim 9 (depends on 8) The method of claim 8, wherein the energy harvesting device is configured to use a public band, and wherein determining to configure an energy harvesting device for frequency hopping comprises determining at least one of: signals of the other wireless systems are being transmitted on a frequency channel used by the energy harvesting device; or multiple wireless devices are operating on an unlicensed spectrum. ### Claim 10 (depends on 8) The method of claim 8, wherein the indication for frequency hopping comprises a public band used to transmit the wake-up signal. ### Claim 11 (depends on 8) The method of claim 8, wherein the indication for frequency hopping comprises a bit of the wake-up signal. ### Claim 12 (depends on 8) The method of claim 8, wherein the wake-up signal includes an indication of a frequency hopping pattern. ### Claim 13 (depends on 8) The method of claim 8, wherein the wake-up signal includes an indication of a response slot for the energy harvesting device. ### Claim 14 (depends on 13) The method of claim 13, wherein a frequency channel used by an energy harvesting device in response to the wake-up signal is based on the indicated response slot for the energy harvesting device. ### Claim 15 A non-transitory computer-readable medium having stored thereon instructions that, when executed by at least one processor, cause the at least one processor to: determine to configure an energy harvesting device for frequency hopping based on detected signals of one or more other wireless systems; transmit a wake-up signal, the wake-up signal including an indication for frequency hopping; receive a first response from the energy harvesting device on a first frequency channel; and receive a second response from the energy harvesting device on a second frequency channel based on a frequency hopping pattern. ### Claim 16 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the energy harvesting device is configured to use a public band, and wherein, to determine to configure an energy harvesting device for frequency hopping, the instructions cause the at least one processor to determine at least one of: signals of the other wireless systems are being transmitted on a frequency channel used by the energy harvesting device; or multiple wireless devices are operating on an unlicensed spectrum. ### Claim 17 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the indication for frequency hopping comprises a public band used to transmit the wake-up signal. ### Claim 18 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the indication for frequency hopping comprises a bit of the wake-up signal. ### Claim 19 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the wake-up signal includes an indication of a frequency hopping pattern. ### Claim 20 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the wake-up signal includes an indication of a response slot for the energy harvesting device.