# US 2023/0056058 A1 · Adaptive subcarrier spacing configuration > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0056058 A1 - Document ID: US20230056058A1 - Status: Published application - Kind: A1 - Application number: 17/982,415 - Filed: 2022-11-07 - Published: 2023-02-23 - Earliest claimed: 2017-01-27 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Hung Dinh LY; Hao XU; Wanshi CHEN; Peter GAAL; Tingfang JI; Durga Prasad MALLADI - Web page: https://patentgrep.com/patent/US20230056058A1 ## CPC - 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 1/0028: {Formatting} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04L 27/2613: {Structure of the reference signals} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 27/2602: {Signal structure} - H04L 27/2621: {Reduction thereof using phase offsets between subcarriers} - 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 Methods and apparatuses for adaptive subcarrier spacing in wireless communication networks are described. For example, the described aspects include transmitting, from the UE to a network entity, a first PRACH transmission with a first subcarrier spacing; determining, by the UE, that the first PRACH transmission to the network entity is not successful; and transmitting, from the UE, a second PRACH transmission with a second subcarrier spacing in response to determining that the first PRACH transmission is not successful, wherein the first subcarrier spacing is different from the second subcarrier spacing. ## Claims ### Claim 1 A method of wireless communication by a user equipment (UE), comprising: receiving, at the UE, a subcarrier spacing configuration for one or more subframes from a network entity, the subcarrier spacing configuration indicating a respective subcarrier spacing for each of the one or more subframes; and receiving, at the UE, a physical channel in the one or more subframes with the respective subcarrier spacing for each of the one or more subframes. ### Claim 2 (depends on 1) The method of claim 1, wherein a first subcarrier spacing applies to a plurality of physical channels at the UE, and the plurality of physical channels includes the physical channel. ### Claim 3 (depends on 1) The method of claim 1, wherein a first subcarrier spacing applies to a first physical channel at the UE and does not apply to a second physical channel at the UE. ### Claim 4 (depends on 3) The method of claim 3, wherein the second physical channel is a Primary Synchronization Signal (PSS). ### Claim 5 (depends on 3) The method of claim 3, wherein the second physical channel is a Secondary Synchronization Signal (SSS). ### Claim 6 (depends on 1) The method of claim 1, wherein the one or more subframes correspond to one or more subframes of a Physical Downlink Control Channel (PDCCH). ### Claim 7 An apparatus for wireless communication by a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to: receive, at the UE, a subcarrier spacing configuration for one or more subframes from a network entity, the subcarrier spacing configuration indicating a respective subcarrier spacing for each of the one or more subframes; and receive, at the UE, a physical channel in the one or more subframes with the respective subcarrier spacing for each of the one or more subframes. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein a first subcarrier spacing applies to a plurality of physical channels at the UE, and the plurality of physical channels includes the physical channel. ### Claim 9 (depends on 7) The apparatus of claim 7, wherein a first subcarrier spacing applies to a first physical channel at the UE and does not apply to a second physical channel at the UE. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the second physical channel is a Primary Synchronization Signal (PSS). ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the second physical channel is a Secondary Synchronization Signal (SSS). ### Claim 12 (depends on 7) The apparatus of claim 7, wherein the one or more subframes correspond to one or more subframes of a Physical Downlink Control Channel (PDCCH). ### Claim 13 A non-transitory computer-readable device having instructions thereon that, when executed by at least one computing device, causes the at least one computing device to perform operations comprising: receiving, at a UE, a subcarrier spacing configuration for one or more subframes from a network entity, the subcarrier spacing configuration indicating a respective subcarrier spacing for each of the one or more subframes; and receiving, at the UE, a physical channel in the one or more subframes with the respective subcarrier spacing for each of the one or more subframes. ### Claim 14 (depends on 13) The non-transitory computer-readable device of claim 13, wherein a first subcarrier spacing applies to a plurality of physical channels at the UE, and the plurality of physical channels includes the physical channel. ### Claim 15 (depends on 13) The non-transitory computer-readable device of claim 13, wherein the physical channel is a first physical channel, and a first subcarrier spacing applies to the first physical channel at the UE and does not apply to a second physical channel at the UE. ### Claim 16 (depends on 15) The non-transitory computer-readable device of claim 15, wherein the second physical channel is a Primary Synchronization Signal (PSS). ### Claim 17 (depends on 15) The non-transitory computer-readable device of claim 15, wherein the second physical channel is a Secondary Synchronization Signal (SSS). ### Claim 18 (depends on 13) The non-transitory computer-readable device of claim 13, wherein the one or more subframes correspond to one or more subframes of a Physical Downlink Control Channel (PDCCH). ### Claim 19 An apparatus for transmitting with semi-persistent scheduling from a user equipment (UE), comprising: means for receiving, at the UE, a subcarrier spacing configuration for one or more subframes from a network entity, the subcarrier spacing configuration indicating a respective subcarrier spacing for each of the one or more subframes; and means for receiving, at the UE, a physical channel in the one or more subframes with the respective subcarrier spacing for each of the one or more subframes. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein a first subcarrier spacing applies to a plurality of physical channels at the UE, and the plurality of physical channels includes the physical channel. ### Claim 21 (depends on 19) The apparatus of claim 19, wherein the physical channel is a first physical channel, and a first subcarrier spacing applies to the first physical channel at the UE and does not apply to a second physical channel at the UE. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein the second physical channel is a Primary Synchronization Signal (PSS). ### Claim 23 (depends on 21) The apparatus of claim 21, wherein the second physical channel is a Secondary Synchronization Signal (SSS). ### Claim 24 (depends on 20) The apparatus of claim 20, wherein the one or more subframes correspond to one or more subframes of a Physical Downlink Control Channel (PDCCH).