# US 2021/0243709 A1 · Minimum time gap for uplink transmission in multiple timing advance groups > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243709 A1 - Document ID: US20210243709A1 - Status: Published application - Kind: A1 - Application number: 17/137,082 - Filed: 2020-12-29 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Qian ZHANG; Yan ZHOU; Tao LUO - Web page: https://patentgrep.com/patent/US20210243709A1 ## CPC - H04W 56/0005: {synchronizing of arrival of multiple uplinks} - 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)} - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine a minimum time gap for a set of uplink transmissions in a set of timing advance groups; and schedule a first uplink transmission, of the set of uplink transmissions, in a first timing advance group, of the set of timing advance groups, and a second uplink transmission, of the set of uplink transmissions, in a second timing advance group, of the set of timing advance groups, with at least the minimum time gap between the first uplink transmission and the second uplink transmission. Numerous other aspects are provided. ## Claims ### Claim 1 A user equipment for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: determine a minimum time gap for a set of uplink transmissions in a set of timing advance groups; and transmit a first uplink transmission, of the set of uplink transmissions, in a first timing advance group, of the set of timing advance groups, and a second uplink transmission, of the set of uplink transmissions, in a second timing advance group, of the set of timing advance groups, with at least the minimum time gap between the first uplink transmission and the second uplink transmission. ### Claim 2 (depends on 1) The user equipment of claim 1, wherein the one or more processors, when determining the minimum time gap, are configured to: receive, from a base station, at least one of: information identifying the minimum time gap or information identifying a schedule for the first uplink transmission and the second uplink transmission. ### Claim 3 (depends on 1) The user equipment of claim 1, wherein the minimum time gap is a fixed time gap defined by a specification. ### Claim 4 (depends on 3) The user equipment of claim 3, wherein the minimum time gap is a fixed quantity of symbols and is based at least in part on a numerology or a subcarrier spacing of a single uplink transmission of the set of uplink transmissions. ### Claim 5 (depends on 4) The user equipment of claim 4, wherein the single uplink transmission is one of: the first uplink transmission, the second uplink transmission, an uplink transmission with a smallest numerology or subcarrier spacing, an uplink transmission with a largest numerology or subcarrier spacing. ### Claim 6 (depends on 3) The user equipment of claim 3, wherein the minimum time gap is a fixed quantity of symbols and is based at least in part on a numerology or a subcarrier spacing of the first uplink transmission and the second uplink transmission. ### Claim 7 (depends on 3) The user equipment of claim 3, wherein the minimum time gap is a fixed quantity of symbols and is based at least in part on a numerology or a subcarrier spacing of a set of uplink bandwidth parts of a set of component carriers of a single timing advance group of the set of timing advance groups. ### Claim 8 (depends on 7) The user equipment of claim 7, wherein the single timing advance group is one of: the first timing advance group, the second timing advance group, a particular timing advance group, of the set of timing advance groups, with a smallest numerology or subcarrier spacing, or a particular timing advance group, of the set of timing advance groups, with a largest numerology or subcarrier spacing. ### Claim 9 (depends on 1) The user equipment of claim 1, wherein the minimum time gap is a user equipment reported time gap based at least in part on a user equipment capability of the user equipment. ### Claim 10 (depends on 9) The user equipment of claim 9, wherein the one or more processors are further configured to: transmit, to a base station, information identifying the minimum time gap based at least in part on determining the minimum time gap. ### Claim 11 (depends on 9) The user equipment of claim 9, wherein the minimum time gap is based at least in part on the user equipment reported time gap and a numerology or a subcarrier spacing of a single uplink transmission of the set of uplink transmissions. ### Claim 12 (depends on 11) The user equipment of claim 11, wherein the single uplink transmission is one of: the first uplink transmission, the second uplink transmission, an uplink transmission with a smallest numerology or subcarrier spacing, an uplink transmission with a largest numerology or subcarrier spacing. ### Claim 13 (depends on 9) The user equipment of claim 9, wherein the minimum time gap is based at least in part on the user equipment reported time gap and is based at least in part on a numerology or a subcarrier spacing of the first uplink transmission and the second uplink transmission. ### Claim 14 (depends on 9) The user equipment of claim 9, wherein the minimum time gap is based at least in part on the user equipment reported time gap and is based at least in part on a numerology or a subcarrier spacing of a set of uplink bandwidth parts of a set of component carriers of a single timing advance group of the set of timing advance groups. ### Claim 15 (depends on 14) The user equipment of claim 14, wherein the single timing advance group is one of: the first timing advance group, the second timing advance group, a particular timing advance group, of the set of timing advance groups, with a smallest numerology or subcarrier spacing, or a particular timing advance group, of the set of timing advance groups, with a largest numerology or subcarrier spacing. ### Claim 16 A base station for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: determine a minimum time gap for a set of uplink transmissions in a set of timing advance groups; and schedule a first uplink transmission, of the set of uplink transmissions, in a first timing advance group, of the set of timing advance groups, and a second uplink transmission, of the set of uplink transmissions, in a second timing advance group, of the set of timing advance groups, with at least the minimum time gap between the first uplink transmission and the second uplink transmission. ### Claim 17 (depends on 16) The base station of claim 16, wherein the minimum time gap is a fixed time gap defined by a specification. ### Claim 18 (depends on 17) The base station of claim 17, wherein the minimum time gap is a fixed quantity of symbols and is based at least in part on a numerology or a subcarrier spacing of a single uplink transmission of the set of uplink transmissions. ### Claim 19 (depends on 18) The base station of claim 18, wherein the single uplink transmission is one of: the first uplink transmission, the second uplink transmission, an uplink transmission with a smallest numerology or subcarrier spacing, an uplink transmission with a largest numerology or subcarrier spacing. ### Claim 20 (depends on 17) The base station of claim 17, wherein the minimum time gap is a fixed quantity of symbols and is based at least in part on a numerology or a subcarrier spacing of the first uplink transmission and the second uplink transmission. ### Claim 21 (depends on 17) The base station of claim 17, wherein the minimum time gap is a fixed quantity of symbols and is based at least in part on a numerology or a subcarrier spacing of a set of uplink bandwidth parts of a set of component carriers of a single timing advance group of the set of timing advance groups. ### Claim 22 (depends on 21) The base station of claim 21, wherein the single timing advance group is one of: the first timing advance group, the second timing advance group, a particular timing advance group, of the set of timing advance groups, with a smallest numerology or subcarrier spacing, or a particular timing advance group, of the set of timing advance groups, with a largest numerology or subcarrier spacing. ### Claim 23 (depends on 16) The base station of claim 16, wherein the minimum time gap is a user equipment reported time gap based at least in part on a user equipment capability of a user equipment for which the first uplink transmission and the second uplink transmission are scheduled. ### Claim 24 (depends on 23) The base station of claim 23, wherein the one or more processors are further configured to: receive, from the user equipment, information identifying the minimum time gap. ### Claim 25 (depends on 23) The base station of claim 23, wherein the minimum time gap is based at least in part on the user equipment reported time gap and a numerology or a subcarrier spacing of a single uplink transmission of the set of uplink transmissions. ### Claim 26 (depends on 25) The base station of claim 25, wherein the single uplink transmission is one of: the first uplink transmission, the second uplink transmission, an uplink transmission with a smallest numerology or subcarrier spacing, an uplink transmission with a largest numerology or subcarrier spacing. ### Claim 27 (depends on 23) The base station of claim 23, wherein the minimum time gap is based at least in part on the user equipment reported time gap and is based at least in part on a numerology or a subcarrier spacing of the first uplink transmission and the second uplink transmission. ### Claim 28 (depends on 23) The base station of claim 23, wherein the minimum time gap is based at least in part on the user equipment reported time gap and is based at least in part on a numerology or a subcarrier spacing of a set of uplink bandwidth parts of a set of component carriers of a single timing advance group of the set of timing advance groups. ### Claim 29 A method of wireless communication performed by a user equipment, comprising: determining a minimum time gap for a set of uplink transmissions in a set of timing advance groups; and transmitting a first uplink transmission, of the set of uplink transmissions, in a first timing advance group, of the set of timing advance groups, and a second uplink transmission, of the set of uplink transmissions, in a second timing advance group, of the set of timing advance groups, with at least the minimum time gap between the first uplink transmission and the second uplink transmission. ### Claim 30 A method of wireless communication performed by a base station, comprising: determining a minimum time gap for a set of uplink transmissions in a set of timing advance groups; and scheduling a first uplink transmission, of the set of uplink transmissions, in a first timing advance group, of the set of timing advance groups, and a second uplink transmission, of the set of uplink transmissions, in a second timing advance group, of the set of timing advance groups, with at least the minimum time gap between the first uplink transmission and the second uplink transmission.