# US 2018/0324600 A1 · Analog beamforming for wi-fi devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324600 A1 - Document ID: US20180324600A1 - Status: Published application - Kind: A1 - Application number: 15/971,790 - Filed: 2018-05-04 - Published: 2018-11-08 - Earliest claimed: 2017-05-04 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Carlos Aldana; Yaron Alpert; Ali Sadri; Alexander Maltsev - Web page: https://patentgrep.com/patent/US20180324600A1 ## CPC - H04W 16/28: using beam steering - H04B 7/0617: {for beam forming} - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 74/0816: with collision avoidance - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract This disclosure describes systems, methods, and devices related to analog beamforming for Wi-Fi devices. A device may determine a first analog direction associated with a first antenna of one or more antennas, using an RF chain. The device may determine a second analog direction associated with a second antenna of the one or more antennas, using the RF chain. The device may cause to send a first frame of one or more frames to a responder device using the first analog direction. The device may cause to send a second frame of the one or more frames to the responder device using the second analog direction. The device may identify one or more response frames received from the responder device, wherein at least one of the one or more response frames comprises an indication of an identified transmit direction. ## Claims ### Claim 1 A device, the device comprising memory and processing circuitry configured to: determine a first analog direction associated with a first antenna of one or more antennas, using an RF chain; determine a second analog direction associated with a second antenna of the one or more antennas, using the RF chain; cause to send a first frame of one or more frames to a responder device using the first analog direction; cause to send a second frame of the one or more frames to the responder device using the second analog direction; and identify one or more response frames received from the responder device, wherein at least one of the one or more response frames comprises an indication of an identified transmit direction. ### Claim 2 (depends on 1) The device of claim 1, wherein the one or more frames are request to send (RTS) frames. ### Claim 3 (depends on 2) The device of claim 2, wherein the one or more response frames are clear to send (CTS) frames. ### Claim 4 (depends on 1) The device of claim 1, wherein the device is an 802.11 device capable of operating in at least one of 2.4 GHz, 5 GHz, or 6 GHz. ### Claim 5 (depends on 1) The device of claim 1, wherein the identified transmit direction is the second analog direction, and wherein the second analog direction is associated with a successful reception of the second frame by the responder device. ### Claim 6 (depends on 5) The device of claim 5, wherein the memory and the processing circuitry are further configured to: identify one or more RTS frames received from the responder device; and cause to send a CTS frame using the second analog direction. ### Claim 7 (depends on 6) The device of claim 6, wherein the one or more RTS frames are received after receiving the one or more response frames from the responder device. ### Claim 8 (depends on 1) The device of claim 1, wherein the memory and the processing circuitry are further configured to: identify a feedback frame received from the responder device, wherein the feedback frame comprises a selected direction associated with sending the first frame and the second frame; and cause to send to the responder device an acknowledgment frame using the selected direction indicated in the feedback frame. ### Claim 9 (depends on 8) The device of claim 8, wherein the feedback frame is received omnidirectionally. ### Claim 10 (depends on 1) The device of claim 1, further comprising a transceiver configured to transmit and receive wireless signals. ### Claim 11 (depends on 10) The device of claim 10, further comprising one or more antennas coupled to the transceiver. ### Claim 12 A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising: causing to send a first frame of one or more frames to a responder device using a first analog direction; causing to send a second frame of the one or more frames to the responder device using a second analog direction; identifying one or more response frames received from the responder device; identifying one or more feedback frames received from responder device; and causing to send a feedback frame to the responder device using a selected direction indicated in at least one of the one or more feedback frames received from the responder device. ### Claim 13 (depends on 12) The non-transitory computer-readable medium of claim 12, wherein the one or more feedback frames are received omnidirectionally. ### Claim 14 (depends on 12) The non-transitory computer-readable medium of claim 12, wherein the operations further comprise determining a direction associated with receiving at least one of the one or more feedback frames received from the responder device. ### Claim 15 (depends on 14) The non-transitory computer-readable medium of claim 14, wherein the feedback frame comprises an indication of the direction associated with the one or more feedback frames received from the responder device. ### Claim 16 A method comprising: determining, by one or more processors of an initiator device, a first analog direction associated with a first antenna of one or more antennas, using an RF chain; determining a second analog direction associated with a second antenna of the one or more antennas, using the RF chain; causing to send a first frame of one or more frames to a responder device using the first analog direction; causing to send a second frame of the one or more frames to the responder device using the second analog direction; and identifying one or more response frames received from the responder device, wherein at least one of the one or more response frames comprises an indication of an identified transmit direction. ### Claim 17 (depends on 16) The method of claim 16, wherein the one or more frames are request to send (RTS) frames. ### Claim 18 (depends on 17) The method of claim 17, wherein the one or more response frames are clear to send (CTS) frames. ### Claim 19 (depends on 16) The method of claim 16, wherein the initiator device and the responder device is an 802.11 device capable of operating in at least one of 2.4 GHz, 5 GHz, or 6 GHz. ### Claim 20 (depends on 16) The method of claim 16, wherein the identified transmit direction is the second analog direction, and wherein the second analog direction is associated with a successful reception of the second frame by the responder device.