# US 12,113,595 B2 · Measurement signals for sensing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,595 B2 - Document ID: US12113595B2 - Status: Granted - Kind: B2 - Application number: 18/004,347 - Filed: 2020-07-10 - Published: 2023-08-31 - Granted: 2024-10-08 - Earliest claimed: 2020-07-10 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Miguel Lopez; Leif Wilhelmsson - Web page: https://patentgrep.com/patent/US12113595B2 ## CPC - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0417: Feedback systems - H04B 7/0621: {Feedback content} - H04W 84/12: WLAN [Wireless Local Area 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) ## Abstract A method is disclosed of a transmitter configured to transmit one or more physical layer packets, which together have a plurality of measurement signals for channel estimation. The method includes receiving (from a sensing device) a precoding setting request for the measurement signals for channel estimation, wherein the precoding setting request is indicative of one or more precoding settings prioritized for sensing, configuring the transmitter to use precoding settings for the plurality of measurement signals for channel estimation based on the precoding setting request, and transmitting the one or more physical layer packets. A method is also disclosed of a receiver configured to operate as a sensing device. ## Claims ### Claim 1 A method of a transmitter configured to transmit one or more physical layer packets, which together comprise a plurality of measurement signals for channel estimation, the method comprising: receiving, from a sensing device, a precoding setting request for the measurement signals for channel estimation, the precoding setting request being indicative of one or more precoding settings prioritized for sensing by indicating one or more spatial directions associated with emission caused by the one or more precoding settings prioritized for sensing; configuring the transmitter to use configured precoding settings of the one or more precoding settings for the plurality of measurement signals for channel estimation based on the precoding setting request; and transmitting the one or more physical layer packets and a precoding setting announcement indicative of the configured precoding settings. ### Claim 2 (depends on 1) The method of claim 1, wherein the precoding setting announcement is comprised in one or more of: a broadcast signal, a beacon signal, a receiver-dedicated signal, a header field of the physical layer packet, and a medium access control header field associated with the physical layer packet. ### Claim 3 (depends on 1) The method of claim 1, wherein configuring the transmitter to use the configured precoding settings for the plurality of measurement signals for channel estimation comprises configuring the configured precoding settings in accordance with a precoding setting pattern. ### Claim 4 (depends on 1) The method of claim 1, wherein the configured precoding settings are selected from a collection of precoding settings for wireless local area network (WLAN) sensing. ### Claim 5 (depends on 1) The method of claim 1, wherein one or more of: at least one of the measurement signals for channel estimation is comprised in a physical layer packet preamble; at least one of the measurement signals for channel estimation occurs outside of a physical layer packet preamble; at least one of the measurement signals for channel estimation is comprised in a physical layer packet midamble; and at least one of the measurement signals for channel estimation is comprised in a packet extension field. ### Claim 6 A method of a receiver configured to operate as a sensing device, the method comprising: transmitting a precoding setting request for a plurality of measurement signals for channel estimation, the precoding setting request being indicative of one or more precoding settings prioritized for sensing by indicating one or more spatial directions associated with emission caused by the one or more precoding settings prioritized for sensing; receiving one or more physical layer packet comprising the plurality of measurement signals for channel estimation, precoding settings being used based on the precoding setting request; receiving a precoding setting announcement indicative of configured precoding settings of the one or more precoding settings; and performing channel estimation based on the plurality of measurement signals for channel estimation. ### Claim 7 (depends on 6) The method of claim 6, wherein the precoding setting announcement is comprised in one or more of: a broadcast signal, a beacon signal, a receiver-dedicated signal, a header field of the physical layer packet, and a medium access control header field associated with the physical layer packet. ### Claim 8 A non-transitory computer storage medium, having thereon a computer program comprising program instructions, the computer program being loadable into a data processing unit and configured to cause execution of a method when the computer program is run by the data processing unit, the method comprising: receiving, from a sensing device, a precoding setting request for measurement signals for channel estimation, the precoding setting request being indicative of one or more precoding settings prioritized for sensing by indicating one or more spatial directions associated with emission caused by the one or more precoding settings prioritized for sensing; configuring a transmitter to use precoding settings for the plurality of measurement signals for channel estimation based on the precoding setting request; and transmitting the one or more physical layer packets and a precoding setting announcement indicative of configured precoding settings of the one or more precoding settings. ### Claim 9 An apparatus for a transmitter configured to transmit one or more physical layer packets, which together comprise a plurality of measurement signals for channel estimation, the apparatus comprising controlling circuitry configured to cause: reception, from a sensing device, of a precoding setting request for the measurement signals for channel estimation, the precoding setting request being indicative of one or more precoding settings prioritized for sensing by indicating one or more spatial directions associated with emission caused by the one or more precoding settings prioritized for sensing; configuration of the transmitter to use precoding settings for the plurality of measurement signals for channel estimation based on the precoding setting request; and transmission of the one or more physical layer packets and a precoding setting announcement indicative of configured precoding settings of the one or more precoding settings. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the precoding setting announcement is comprised in one or more of: a broadcast signal, a beacon signal, a receiver-dedicated signal, a header field of the physical layer packet, and a medium access control header field associated with the physical layer packet. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein one or more of: at least one of the measurement signals for channel estimation is comprised in a physical layer packet preamble; at least one of the measurement signals for channel estimation occurs outside of a physical layer packet preamble; at least one of the measurement signals for channel estimation is comprised in a physical layer packet midamble; and at least one of the measurement signals for channel estimation is comprised in a packet extension field. ### Claim 12 (depends on 9) The apparatus of claim 9, wherein the apparatus is comprised in a wireless communication device. ### Claim 13 An apparatus for a receiver configured to operate as a sensing device, the apparatus comprising controlling circuitry configured to cause: transmission of a precoding setting request for a plurality of measurement signals for channel estimation, the precoding setting request being indicative of one or more precoding settings prioritized for sensing by indicating one or more spatial directions associated with emission caused by the one or more precoding settings prioritized for sensing; reception of one or more physical layer packet comprising the plurality of measurement signals for channel estimation, precoding settings being used based on the precoding setting request; reception of a precoding setting announcement indicative of configured precoding settings of the one or more precoding settings; and performance of channel estimation based on the plurality of measurement signals for channel estimation. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein the precoding setting announcement is comprised in one or more of: a broadcast signal, a beacon signal, a receiver-dedicated signal, a header field of the physical layer packet, and a medium access control header field associated with the physical layer packet. ### Claim 15 (depends on 13) The apparatus of claim 13, wherein the apparatus is comprised in a wireless communication device.