# US 12,192,036 B2 · 60 GHz numerology for wireless local area networks (WLANs) > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,036 B2 - Document ID: US12192036B2 - Status: Granted - Kind: B2 - Application number: 18/480,666 - Filed: 2023-10-04 - Published: 2024-01-25 - Granted: 2025-01-07 - Earliest claimed: 2022-04-22 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Lin Yang; Bin Tian; Youhan Kim; Jialing Li Chen - Web page: https://patentgrep.com/patent/US12192036B2 ## CPC - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 27/2603: {Signal structure ensuring backward compatibility with legacy system} - H04L 27/2607: {Cyclic extensions} - H04L 27/2628: {Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators (H04L27/2634 takes precedence)} - H04L 27/2626: {Arrangements specific to the transmitter only} - H04L 27/2647: {Arrangements specific to the receiver only (equalisation H04L27/01)} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract This disclosure provides methods, devices and systems for increasing carrier frequencies for wireless communications in wireless local area networks (WLANs). Some implementations more specifically relate to packet designs and numerologies that support wireless communications on carrier frequencies above 7 GHz. In some aspects, a wireless communication device may up-clock a physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) for transmission on carrier frequencies above 7 GHz, where the PPDU conforms to an existing PPDU format associated with carrier frequencies below 7 GHz. As used herein, the term “up-clocking” refers to increasing the frequency of a clock signal used to convert the PPDU between the frequency domain and the time domain. In some aspects, the up-clocking may result in a subcarrier spacing (SCS) greater than or equal to 1.2 MHz, where the SCS represents a spacing between the subcarriers on which a PHY preamble of the PPDU is modulated. ## Claims ### Claim 1 A wireless communication device, comprising: one or more memories that store processor-executable code; and one or more processors coupled with the one or more memories and configured to, in association with executing the code, cause the wireless communication device to: map, to a plurality of subcarriers, a physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) conforming to a PPDU format associated with wireless communication on a carrier frequency below 7 gigahertz (GHz), the plurality of subcarriers spanning a bandwidth associated with the PPDU format; transform the plurality of subcarriers into a time-varying signal at a sampling rate higher than the bandwidth, the sampling rate being associated with a subcarrier spacing (SCS) greater than 1.2 megahertz (MHz); and transmit the time-varying signal, over a wireless channel, on a carrier frequency above 7 GHz. ### Claim 2 (depends on 1) The wireless communication device of claim 1, wherein the sampling rate is equal to one of 4 times the bandwidth, or 8 times the bandwidth, or 16 times the bandwidth, or 32 times the bandwidth. ### Claim 3 (depends on 1) The wireless communication device of claim 1, wherein the PPDU includes a PHY preamble followed by a data portion, the SCS representing an amount of separation, in a frequency domain, between adjacent subcarriers of the plurality of subcarriers to which the PHY preamble is mapped. ### Claim 4 (depends on 1) The wireless communication device of claim 1, wherein the SCS is equal to 1.25 MHz. ### Claim 5 (depends on 4) The wireless communication device of claim 4, wherein the plurality of subcarriers includes 234 data subcarriers, 8 pilot subcarriers, 11 guard subcarriers, and 3 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 256-point inverse fast Fourier transform (IFFT), and the sampling rate is 320 MHz. ### Claim 6 (depends on 4) The wireless communication device of claim 4, wherein the plurality of subcarriers includes 468 data subcarriers, 16 pilot subcarriers, 11 guard subcarriers, and 11 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with two 256-point inverse fast Fourier transforms (IFFTs), and the sampling rate is 640 MHz. ### Claim 7 (depends on 1) The wireless communication device of claim 1, wherein the SCS is equal to 1.875 MHz. ### Claim 8 (depends on 7) The wireless communication device of claim 7, wherein the plurality of subcarriers includes 234 data subcarriers, 8 pilot subcarriers, 11 guard subcarriers, and 3 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 256-point inverse fast Fourier transform (IFFT), and the sampling rate is 480 MHz. ### Claim 9 (depends on 7) The wireless communication device of claim 7, wherein the plurality of subcarriers includes 468 data subcarriers, 16 pilot subcarriers, 11 guard subcarriers, and 11 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with two 256-point inverse fast Fourier transforms (IFFTs), and the sampling rate is 960 MHz. ### Claim 10 (depends on 1) The wireless communication device of claim 1, wherein the SCS is equal to 2.5 MHz. ### Claim 11 (depends on 10) The wireless communication device of claim 10, wherein the plurality of subcarriers includes 108 data subcarriers, 6 pilot subcarriers, 11 guard subcarriers, and 3 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 128-point inverse fast Fourier transform (IFFT), and the sampling rate is 320 MHz. ### Claim 12 (depends on 10) The wireless communication device of claim 10, wherein the plurality of subcarriers includes 468 data subcarriers, 16 pilot subcarriers, 11 guard subcarriers, and 11 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 512-point inverse fast Fourier transform (IFFT), and the sampling rate is 1.28 GHz. ### Claim 13 (depends on 10) The wireless communication device of claim 10, wherein the plurality of subcarriers includes 468 data subcarriers, 16 pilot subcarriers, 23 guard subcarriers, and 5 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 512-point inverse fast Fourier transform (IFFT), and the sampling rate is 1.28 GHz. ### Claim 14 (depends on 1) The wireless communication device of claim 1, wherein the SCS is equal to 3.75 MHz. ### Claim 15 (depends on 14) The wireless communication device of claim 14, wherein the plurality of subcarriers includes 108 data subcarriers, 6 pilot subcarriers, 11 guard subcarriers, and 3 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 128-point inverse fast Fourier transform (IFFT), and the sampling rate is 480 MHz. ### Claim 16 (depends on 14) The wireless communication device of claim 14, wherein the plurality of subcarriers includes 468 data subcarriers, 16 pilot subcarriers, 11 guard subcarriers, and 11 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 512-point inverse fast Fourier transform (IFFT), and the sampling rate is 1.92 GHz. ### Claim 17 (depends on 14) The wireless communication device of claim 14, wherein the plurality of subcarriers includes 468 data subcarriers, 16 pilot subcarriers, 23 guard subcarriers, and 5 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 512-point inverse fast Fourier transform (IFFT), and the sampling rate is 1.92 GHz. ### Claim 18 A method for wireless communication by a wireless communication device, comprising: mapping, to a plurality of subcarriers, a physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) conforming to a PPDU format associated with wireless communication on a carrier frequency below 7 gigahertz (GHz), the plurality of subcarriers spanning a bandwidth associated with the PPDU format; transforming the plurality of subcarriers into a time-varying signal at a sampling rate higher than the bandwidth, the sampling rate being associated with a subcarrier spacing (SCS) greater than 1.2 megahertz (MHz); and transmitting the time-varying signal, over a wireless channel, on a carrier frequency above 7 GHz. ### Claim 19 (depends on 18) The method of claim 18, wherein the sampling rate is equal to one of 4 times the bandwidth, or 8 times the bandwidth, or 16 times the bandwidth, or 32 times the bandwidth. ### Claim 20 (depends on 18) The method of claim 18, wherein the PPDU includes a PHY preamble followed by a data portion, the SCS representing an amount of separation, in a frequency domain, between adjacent subcarriers of the plurality of subcarriers to which the PHY preamble is mapped. ### Claim 21 (depends on 18) The method of claim 18, wherein the SCS is equal to 1.25 MHz. ### Claim 22 A wireless communication device, comprising: one or more memories that store processor-executable code; and one or more processors coupled with the one or more memories and configured to, in association with executing the code, cause the wireless communication device to: receive a time-varying signal, over a wireless channel, on a carrier frequency above 7 gigahertz (GHz) with a subcarrier spacing (SCS) greater than 1.2 megahertz (MHz), the time-varying signal carrying a physical layer convergence protocol (PLCP) protocol data unit (PPDU) conforming to a PPDU format associated with wireless communication on a carrier frequency below 7 GHz; transforming, in accordance with a sampling rate higher than a bandwidth associated with the PPDU format, the time-varying signal into a plurality of subcarriers spanning the bandwidth, the sampling rate being in association with the SCS being greater than 1.2 MHz; and de-mapping the PPDU from the plurality of subcarriers. ### Claim 23 (depends on 22) The wireless communication device of claim 22, wherein the sampling rate is equal to one of 4 times the bandwidth, or 8 times the bandwidth, or 16 times the bandwidth, or 32 times the bandwidth. ### Claim 24 (depends on 22) The wireless communication device of claim 22, wherein the PPDU includes a PHY preamble followed by a data portion, the SCS representing an amount of separation, in a frequency domain, between adjacent subcarriers of the plurality of subcarriers to which the PHY preamble is mapped. ### Claim 25 (depends on 22) The wireless communication device of claim 22, wherein the SCS is equal to 1.25 MHz. ### Claim 26 (depends on 25) The wireless communication device of claim 25, wherein the plurality of subcarriers includes 234 data subcarriers, 8 pilot subcarriers, 11 guard subcarriers, and 3 direct current (DC) subcarriers, the plurality of subcarriers is transformed into the time-varying signal associated with a 256-point inverse fast Fourier transform (IFFT), and the sampling rate is 320 MHz. ### Claim 27 A method of wireless communication by a wireless communication device, comprising: receiving a time-varying signal, over a wireless channel, on a carrier frequency above 7 gigahertz (GHz) with a subcarrier spacing (SCS) greater than 1.2 megahertz (MHz), the time-varying signal carrying a physical layer convergence protocol (PLCP) protocol data unit (PPDU) conforming to a PPDU format associated with wireless communication on a carrier frequency below 7 GHz; transforming, in accordance with a sampling rate higher than a bandwidth associated with the PPDU format, the time-varying signal into a plurality of subcarriers spanning the bandwidth, the sampling rate being in association with the SCS being greater than 1.2 MHz; and de-mapping the PPDU from the plurality of subcarriers. ### Claim 28 (depends on 27) The method of claim 27, wherein the sampling rate is equal to one of 4 times the bandwidth, or 8 times the bandwidth, or 16 times the bandwidth, or 32 times the bandwidth. ### Claim 29 (depends on 27) The method of claim 27, wherein the PPDU includes a PHY preamble followed by a data portion, the SCS representing an amount of separation, in a frequency domain, between adjacent subcarriers of the plurality of subcarriers to which the PHY preamble is mapped. ### Claim 30 (depends on 27) The method of claim 27, wherein the SCS is equal to 1.25 MHz.