# US 2022/0045733 A1 · Systems and methods for rf-based motion sensing and event detection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0045733 A1 - Document ID: US20220045733A1 - Status: Published application - Kind: A1 - Application number: 17/228,604 - Filed: 2021-04-12 - Published: 2022-02-10 - Earliest claimed: 2020-08-04 - Assignees: Verizon Patent and Licensing Inc. - Applicants: Verizon Patent and Licensing Inc. - Inventors: Steve Leung - Web page: https://patentgrep.com/patent/US20220045733A1 ## CPC - H04B 7/0641: {Differential feedback} - H04W 4/38: for collecting sensor information - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - Y02D 30/70: in wireless communication networks - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A system described herein may determine transformations, differences, variations, etc. in radio frequency (“RF”) waveforms sent by a device in order to detect motion-based events. Models associated with the differences in such RF waveforms may be used to identify particular types of events, such as the presence of an individual in a room or other area, a type of motion, or other types of events. An interval or rate at which the device outputs RF waveforms may be modified, in order to increase the resolution of the determination of differences between the RF waveforms as sent and the RF waveforms as received, and/or to conserve power. ## Claims ### Claim 1 A system, comprising: a master node configured to: implement a wireless network that is associated with an identifier having a pre-configured pattern; and a plurality of satellite nodes configured to: perform a wireless scan using the pre-configured pattern; detect, based on the wireless scan, a presence of the wireless network implemented by the master node; pair with the master node via the wireless network; and output wireless sensing signals; wherein the master node is further configured to: determine, based on wireless sensing signals output by a first satellite node, of the plurality of satellite nodes paired with the master node, an occurrence of an event; and output an alert, based on the occurrence of the event, to at least a second satellite node of the plurality of satellite nodes paired with the master node. ### Claim 2 (depends on 1) The system of claim 1, wherein the wireless network is a hidden wireless network that is undiscoverable without scanning for the identifier. ### Claim 3 (depends on 2) The system of claim 2, wherein the identifier is a Service Set Identifier (“SSID”). ### Claim 4 (depends on 1) The system of claim 1, wherein the pre-configured pattern includes a fixed portion and a variable portion, wherein performing the wireless scan, by a particular satellite node of the plurality of satellite nodes, includes: performing a first wireless scan according to the fixed portion of the identifier and a first value for the variable portion; and performing a second wireless scan according to the fixed portion of the identifier and a second value for the variable portion, wherein detecting the presence of the wireless network implemented by the master node includes detecting that the identifier associated with the wireless network implemented by the master node includes the fixed portion and the second value for the variable portion. ### Claim 5 (depends on 1) The system of claim 1, wherein pairing with the master node, by the second satellite node, includes a determination by the master node of one or more particular types of output devices associated with the second satellite node, and wherein outputting the alert includes outputting one or more alerts corresponding to the one or more particular types of output devices associated with the second satellite node. ### Claim 6 (depends on 5) The system of claim 5, wherein the one or more particular types of output devices associated with the second satellite node include a first type of output device, wherein the one or more alerts include a first alert, wherein the master node is further configured to: identify a second type of output device associated with the first satellite node, wherein the first and second types of output devices are different types of output devices; and output a second alert, based on the occurrence of the event, to the first satellite node, the second alert corresponding to the second type of output device associated with the first satellite node. ### Claim 7 (depends on 1) The system of claim 1, wherein pairing with the master node includes a determination of a first room in which the first satellite node is located and a second room in which the second satellite node is located, wherein the first and second rooms are different rooms, and wherein the alert is output to the second satellite node based on the determination that the first and second satellite nodes are located in different rooms. ### Claim 8 (depends on 1) The system of claim 1, wherein determining the occurrence of the event based on the wireless sensing signals output by the first satellite node, comprises: comparing the wireless sensing signals to one or more models that are each associated with a respective event; and determining, based on the comparing, that the wireless sensing signals correspond to a particular model, of the one or more models, that is associated with the determined event. ### Claim 9 (depends on 1) The system of claim 1, wherein the wireless sensing signals indicate reference signals on which the wireless sensing signals are based, wherein determining the occurrence of the event based on the wireless sensing signals output by the first satellite node includes comparing the wireless sensing signals, as received, to the reference signals. ### Claim 10 A method, comprising: implementing, by a master node, a wireless network that is associated with an identifier having a pre-configured pattern; performing, by each satellite node of a plurality of satellite nodes, a wireless scan using the pre-configured pattern; detecting, by the each satellite node and based on the wireless scan, a presence of the wireless network implemented by the master node; pair, by the each satellite node, with the master node via the wireless network; outputting, by at least a first satellite node of the plurality of satellite nodes, wireless sensing signals; determining, by the master node and based on the wireless sensing signals output by the first satellite node, an occurrence of an event; and outputting an alert, based on the occurrence of the event, from the master node to at least a second satellite node of the plurality of satellite nodes paired with the master node. ### Claim 11 (depends on 12) The method of claim 12, wherein the identifier includes a Service Set Identifier (“SSID”), and wherein the wireless network is a hidden wireless network that is undiscoverable without scanning for the SSID. ### Claim 12 (depends on 1) The method of claim 1, wherein the pre-configured pattern includes a fixed portion and a variable portion, wherein performing the wireless scan, by a particular satellite node of the plurality of satellite nodes, includes: performing a first wireless scan according to the fixed portion of the identifier and a first value for the variable portion; and performing a second wireless scan according to the fixed portion of the identifier and a second value for the variable portion, wherein detecting the presence of the wireless network implemented by the master node includes detecting that the identifier associated with the wireless network implemented by the master node includes the fixed portion and the second value for the variable portion. ### Claim 13 (depends on 1) The method of claim 1, wherein pairing with the master node, by the second satellite node, includes a determination by the master node of one or more particular types of output devices associated with the second satellite node, and wherein outputting the alert includes outputting one or more alerts corresponding to the one or more particular types of output devices associated with the second satellite node. ### Claim 14 (depends on 5) The method of claim 5, wherein the one or more particular types of output devices associated with the second satellite node include a first type of output device, wherein the one or more alerts include a first alert, wherein the method further comprises: identifying, by the master node, a second type of output device associated with the first satellite node, wherein the first and second types of output devices are different types of output devices; and outputting a second alert, based on the occurrence of the event, to the first satellite node, the second alert corresponding to the second type of output device associated with the first satellite node. ### Claim 15 (depends on 1) The method of claim 1, wherein pairing with the master node includes a determination of a first room in which the first satellite node is located and a second room in which the second satellite node is located, wherein the first and second rooms are different rooms, and wherein the alert is output to the second satellite node based on the determination that the first and second satellite nodes are located in different rooms. ### Claim 16 (depends on 1) The method of claim 1, wherein determining the occurrence of the event based on the wireless sensing signals output by the first satellite node, comprises: comparing the wireless sensing signals to one or more models that are each associated with a respective event; and determining, based on the comparing, that the wireless sensing signals correspond to a particular model, of the one or more models, that is associated with the determined event. ### Claim 17 (depends on 1) The method of claim 1, wherein the wireless sensing signals indicate reference signals on which the wireless sensing signals are based, wherein determining the occurrence of the event based on the wireless sensing signals output by the first satellite node includes comparing the wireless sensing signals, as received, to the reference signals. ### Claim 18 A device, comprising: one or more processors configured to: implement a wireless network that is associated with an identifier having a pre-configured pattern; pair, via the wireless network, with a plurality of satellite nodes that detect the wireless network based on performing one or more scans using the pre-configured pattern; receive wireless sensing signals from a first satellite node, of the plurality of satellite nodes paired with the master node; identify an occurrence of an event based on the received wireless sensing signals from the first satellite node; and output an alert, based on the occurrence of the event, to at least a second satellite node of the plurality of satellite nodes paired with the master node. ### Claim 19 (depends on 18) The device of claim 18, wherein the pre-configured pattern includes a fixed portion and a variable portion, wherein performing the one or more wireless scans, by a particular satellite node of the plurality of satellite nodes, includes: performing a first wireless scan according to the fixed portion of the identifier and a first value for the variable portion; and performing a second wireless scan according to the fixed portion of the identifier and a second value for the variable portion, wherein the particular satellite nodes detects the wireless network by detecting, based on the second wireless scan, that the identifier associated with the wireless network includes the fixed portion and the second value for the variable portion. ### Claim 20 (depends on 18) The device of claim 18, wherein pairing with the second satellite node includes a determination by the master node of one or more particular types of output devices associated with the second satellite node, and wherein outputting the alert includes outputting one or more alerts corresponding to the one or more particular types of output devices associated with the second satellite node.