# US 12,119,971 B2 · Numerology for communications with a forwarding node > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,971 B2 - Document ID: US12119971B2 - Status: Granted - Kind: B2 - Application number: 17/449,979 - Filed: 2021-10-05 - Published: 2022-04-07 - Granted: 2024-10-15 - Earliest claimed: 2020-10-07 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Navid Abedini; Ashwin Sampath; Junyi Li - Web page: https://patentgrep.com/patent/US12119971B2 ## 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)} - H04B 7/15528: {Control of operation parameters of a relay station to exploit the physical medium} - H04L 27/2607: {Cyclic extensions} - H04L 27/2646: {using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length} - H04L 27/2695: {with channel estimation, e.g. determination of delay spread, derivative or peak tracking (channel estimation H04L25/0202)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a forwarding node may determine a numerology for a forwarding operation, that is associated with forwarding signals between a first wireless node and a second wireless node, based at least in part on one or more of: a numerology of a control link between the forwarding node and a control node, a delay spread of a first link with the first wireless node or a delay spread of a second link with the second wireless node, or a configuration, indicated by the control node, of the forwarding operation. The forwarding node may perform the forwarding operation based at least in part on the numerology. Numerous other aspects are provided. ## Claims ### Claim 1 A forwarding node for wireless communication, comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: determine a numerology for a forwarding operation, that is associated with forwarding signals between a first wireless node and a second wireless node, wherein the numerology comprises a cyclic prefix size for the forwarding operation and is based at least in part on one or more of: a numerology of a control link between the forwarding node and a control node, and a delay spread of a first link with the first wireless node or a delay spread of a second link with the second wireless node; and perform the forwarding operation based at least in part on the numerology. ### Claim 2 (depends on 1) The forwarding node of claim 1, wherein the forwarding node is configured as a repeater or a relay for the forwarding operation. ### Claim 3 (depends on 1) The forwarding node of claim 1, wherein the one or more processors, to determine the numerology for the forwarding operation, are configured to: determine that the control link and a link associated with the forwarding operation are within a common frequency band; and determine the numerology for the forwarding operation to be the numerology of the control link. ### Claim 4 (depends on 3) The forwarding node of claim 3, wherein the link associated with the forwarding operation comprises the first link or the second link. ### Claim 5 (depends on 3) The forwarding node of claim 3, wherein the control node comprises the first wireless node, and wherein the link associated with the forwarding operation comprises the second link. ### Claim 6 (depends on 1) The forwarding node of claim 1, wherein the one or more processors, to determine the numerology for the forwarding operation, are configured to: determine one or more of the delay spread of the first link or the delay spread of the second link; and determine the numerology for the forwarding operation based at least in part on the delay spread of the first link or the delay spread of the second link. ### Claim 7 (depends on 1) The forwarding node of claim 1, wherein the one or more processors, to determine the numerology for the forwarding operation, are configured to: determine the cyclic prefix size, as a parameter of the numerology for the forwarding operation, based at least in part on the delay spread of the first link or based at least in part on a greater one of the delay spread of the first link or the delay spread of the second link. ### Claim 8 (depends on 1) The forwarding node of claim 1, wherein the one or more processors, are further configured to: receive configuration information from the control node, wherein the configuration information indicates a first cyclic prefix size for the first link and a second cyclic prefix size for the second link, wherein the second cyclic prefix size is different from the first cyclic prefix size, and wherein the numerology for the forwarding operation is further based on the configuration information. ### Claim 9 (depends on 1) The forwarding node of claim 1, wherein the one or more processors are further configured to: receive configuration information that indicates: the cyclic prefix size for the forwarding operation when forwarding a random access channel communication, or a guard period size for the forwarding operation when forwarding the random access channel communication, and wherein the numerology for the forwarding operation is further based on the configuration information. ### Claim 10 (depends on 1) The forwarding node of claim 1, wherein the one or more processors are configured to: receive an indication of the cyclic prefix size, of a set of candidate cyclic prefix sizes known to the forwarding node, to use for the forwarding operation; receive a dynamic indication of the cyclic prefix size; receive a semi-static indication of the cyclic prefix size; or receive an indication of a value by which the forwarding node is to adjust a current cyclic prefix size. ### Claim 11 (depends on 10) The forwarding node of claim 10, wherein the set of candidate cyclic prefix sizes are known to the forwarding node based at least in part on one or more of: reception of an indication of the set of candidate cyclic prefix sizes in a communication standard associated with the forwarding operation, or reception of an indication of the set of candidate cyclic prefix sizes in configuration information received from the control node. ### Claim 12 (depends on 1) The control node of claim 1, wherein the one or more processors are further configured to: transmit, to the control node, one or more indications associated with determining the numerology for the forwarding operation, the one or more indications comprising one or more of: an indication of a suggested cyclic prefix size for the forwarding operation, an indication of one or more cyclic prefix sizes supported by the forwarding node, or a measurement report associated with selection, by the control node, of a cyclic prefix for the forwarding operation. ### Claim 13 (depends on 12) The control node of claim 12, wherein the measurement report comprises one or more of: an indication of the delay spread associated with the first link, or an indication of the delay spread associated with the second link. ### Claim 14 (depends on 1) The forwarding node of claim 1, wherein one or more of: the first wireless node comprises a base station, the second wireless node comprises a user equipment, or the second wireless node comprises an additional forwarding node. ### Claim 15 A control node for wireless communication, comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: establish a control link with a forwarding node; and transmit configuration information that indicates that the forwarding node is to determine a numerology for a forwarding operation, that is associated with forwarding signals between a first wireless node and a second wireless node, wherein the numerology comprises a cyclic prefix size for the forwarding operation and is based at least in part on one or more of: a numerology of the control link, or a delay spread of a first link with the first wireless node or a delay spread of a second link with the second wireless node. ### Claim 16 (depends on 15) The control node of claim 15, wherein the forwarding node is configured as a repeater or a relay for the forwarding operation. ### Claim 17 (depends on 15) The control node of claim 15, wherein the numerology for the forwarding operation is based at least in part on the numerology of the control link, and wherein the control link and a link associated with the forwarding operation are within a common frequency band. ### Claim 18 (depends on 17) The control node of claim 17, wherein the link associated with the forwarding operation comprises the first link or the second link. ### Claim 19 (depends on 17) The control node of claim 17, wherein the control node comprises the first wireless node, and wherein the link associated with the forwarding operation comprises the second link. ### Claim 20 (depends on 15) The control node of claim 15, wherein a the numerology for the forwarding operation is based at least in part on the delay spread of the first link or the delay spread of the second link. ### Claim 21 (depends on 15) The control node of claim 15, wherein the numerology for the forwarding operation is based at least in part on one of: the delay spread of the first link, or a greater one of the delay spread of the first link or the delay spread of the second link. ### Claim 22 (depends on 15) The control node of claim 15, wherein the numerology for the forwarding operation is further based at least in part on configuration information that indicates a first cyclic prefix size for the first link and a second cyclic prefix size for the second link, wherein the second cyclic prefix size is different from the first cyclic prefix size. ### Claim 23 (depends on 15) The control node of claim 15, wherein the cyclic prefix size is based at least in part on one or more of: configuration information that indicates the cyclic prefix size for the forwarding operation when forwarding a random access channel communication, or configuration information that indicates to reduce a guard period size for the forwarding operation when forwarding the random access channel communication. ### Claim 24 (depends on 15) The control node of claim 15, wherein the numerology for the forwarding operation is based at least in part on one or more of: an indication of the cyclic prefix size for the forwarding operation, a dynamic indication of the cyclic prefix size, or a semi-static indication of the cyclic prefix size. ### Claim 25 (depends on 15) The control node of claim 15, wherein the cyclic prefix size is one of a set of candidate cyclic prefix sizes that are known to the forwarding node based at least in part on one or more of: a transmission, to the forwarding node, of an indication of the set of candidate cyclic prefix sizes in a communication standard associated with the forwarding operation, or a transmission, to the forwarding node, of an indication of the set of candidate cyclic prefix sizes in configuration information. ### Claim 26 (depends on 15) The control node of claim 15, wherein the one or more processors are further configured to: receive, from the forwarding node, one or more indications associated with determining the numerology for the forwarding operation, the one or more indications comprising one or more of: an indication of a suggested cyclic prefix size for the forwarding operation, an indication of one or more cyclic prefix sizes supported by the forwarding node, or a measurement report associated with selection, by the control node, of the cyclic prefix size for the forwarding operation. ### Claim 27 (depends on 26) The control node of claim 26, wherein the measurement report comprises one or more of: an indication of the delay spread associated with the first link, or an indication of the delay spread associated with the second link. ### Claim 28 (depends on 15) The control node of claim 15, wherein one or more of: the first wireless node comprises a base station, the second wireless node comprises a user equipment, or the second wireless node comprises an additional forwarding node. ### Claim 29 A method of wireless communication performed by a forwarding node, comprising: determining a numerology for a forwarding operation, that is associated with forwarding signals between a first wireless node and a second wireless node, wherein the numerology comprises a cyclic prefix size for the forwarding operation and is based at least in part on one or more of: a numerology of a control link between the forwarding node and a control node, and a delay spread of a first link with the first wireless node or a delay spread of a second link with the second wireless node; and performing the forwarding operation based at least in part on the numerology. ### Claim 30 A method of wireless communication performed by a control node, comprising: establishing a control link with a forwarding node; and transmitting configuration information that indicates that the forwarding node is to determine a numerology for a forwarding operation, that is associated with forwarding signals between a first wireless node and a second wireless node, wherein the numerology comprises a cyclic prefix size for the forwarding operation and is based at least in part on one or more of: a numerology of the control link, or a delay spread of a first link with the first wireless node or a delay spread of a second link with the second wireless node.