# US 12,004,151 B2 · Coverage enhancement with frequency selective transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,151 B2 - Document ID: US12004151B2 - Status: Granted - Kind: B2 - Application number: 17/242,358 - Filed: 2021-04-28 - Published: 2021-10-28 - Granted: 2024-06-04 - Earliest claimed: 2020-04-28 - Assignees: Ofinno, LLC - Applicants: Ofinno, LLC - Inventors: Kai Xu; Esmael Hejazi Dinan; Hua Zhou; Yunjung Yi; Jonghyun Park; Hyukjin Chae - Web page: https://patentgrep.com/patent/US12004151B2 ## CPC - H04W 72/1268: of uplink data flows - 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 25/0224: {using sounding signals} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - 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 Described are embodiments for frequency selective transmission. In an embodiment, a wireless device receives a downlink control information indicating a transmission via uplink resources comprising sub-bands; and a sounding reference signal resource indicator (SRI). The wireless device selects, based on the SRI, one or more sounding reference signal (SRS) resources. Uplink precoders are determined for the transmission. The uplink precoders include an uplink precoder that is determined, for each respective sub-band of the sub-bands, based on a transmission precoder of the one or more SRS resources transmitted via the respective sub-band. The wireless device transmits, based on the determined uplink precoders, a transport block of the transmission via the uplink resources. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device, a downlink control information indicating: a transmission via uplink resources comprising sub-bands; and a sounding reference signal resource indicator (SRI); selecting, based on the SRI, one or more sounding reference signal (SRS) resources; determining uplink precoders for the transmission, wherein the uplink precoders comprise an uplink precoder determined, for each respective sub-band of the sub-bands, based on a transmission precoder of the one or more SRS resources transmitted via the respective sub-band; and transmitting, based on the determined uplink precoders, a transport block of the transmission via the uplink resources. ### Claim 2 (depends on 1) The method of claim 1, further comprising: transmitting, to a base station, the one or more SRS resources before receiving the downlink control information. ### Claim 3 (depends on 1) The method of claim 1, wherein selecting the one or more SRS resources comprises: selecting the one or more SRS resources indicated by the SRI. ### Claim 4 (depends on 1) The method of claim 1, wherein selecting the one or more SRS resources comprises: determining, based on the SRI, one or more transmission occasions of the one or more SRS resources. ### Claim 5 (depends on 4) The method of claim 4, wherein the one or more transmission occasions comprise one or more occasions in which the one or more SRS resources are transmitted via the sub-bands. ### Claim 6 (depends on 5) The method of claim 5, wherein the one or more occasions comprise a plurality of occasions, and each occasion is associated with one of the sub-bands. ### Claim 7 (depends on 1) The method of claim 1, further comprising: transmitting the one or more SRS resources via the sub-bands, wherein the one or more SRS resources transmitted via a respective sub-band of the sub-bands is transmitted in a transmission occasion with a respective transmission precoder. ### Claim 8 (depends on 7) The method of claim 7, wherein the transmission occasion comprises one or more symbols, one or more mini slots, or one or more slots. ### Claim 9 (depends on 1) The method of claim 1, wherein each of the sub-bands has a same sub-band bandwidth. ### Claim 10 (depends on 1) The method of claim 1, wherein the uplink precoder determined for each sub-band, of the sub-bands, comprises a transmission precoder transmitted with the one or more SRS resources via the sub-band. ### Claim 11 A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive a downlink control information indicating: a transmission via uplink resources comprising sub-bands; and a sounding reference signal resource indicator (SRI); select, based on the SRI, one or more sounding reference signal (SRS) resources; determine uplink precoders for the transmission, wherein the uplink precoders comprise an uplink precoder determined, for each respective sub-band of the sub-bands, based on a transmission precoder of the one or more SRS resources transmitted via the respective sub-band; and transmit, based on the determined uplink precoders, a transport block of the transmission via the uplink resources. ### Claim 12 (depends on 11) The wireless device of claim 11, wherein the instructions further cause the wireless device to: transmit, to a base station, the one or more SRS resources before receiving the downlink control information. ### Claim 13 (depends on 11) The wireless device of claim 11, wherein to select the one or more SRS resources, the instructions further cause the wireless device to: select the one or more SRS resources indicated by the SRI. ### Claim 14 (depends on 11) The wireless device of claim 11, wherein to select the one or more SRS resources, the instructions further cause the wireless device to: determine, based on the SRI, one or more transmission occasions of the one or more SRS resources. ### Claim 15 (depends on 14) The wireless device of claim 14, wherein the one or more transmission occasions comprise one or more occasions in which the one or more SRS resources are transmitted via the sub-bands. ### Claim 16 (depends on 15) The wireless device of claim 15, wherein the one or more occasions comprise a plurality of occasions, and each occasion is associated with one of the sub-bands. ### Claim 17 (depends on 11) The wireless device of claim 11, wherein the instructions further cause the wireless device to: transmit the one or more SRS resources via the sub-bands, wherein the one or more SRS resources transmitted via a respective sub-band of the sub-bands is transmitted in a transmission occasion with a respective transmission precoder, wherein the transmission occasion comprises one or more symbols, one or more mini slots, or one or more slots. ### Claim 18 (depends on 11) The wireless device of claim 11, wherein each of the sub-bands has a same sub-band bandwidth. ### Claim 19 (depends on 11) The wireless device of claim 11, wherein the uplink precoder determined for each sub-band, of the sub-bands, comprises a transmission precoder transmitted with the one or more SRS resources via the sub-band. ### Claim 20 A system comprising: a base station; and a wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive, from the base station, a downlink control information indicating: a transmission via uplink resources comprising sub-bands; and a sounding reference signal resource indicator (SRI); select, based on the SRI, one or more sounding reference signal (SRS) resources; determine uplink precoders for the transmission, wherein the uplink precoders comprise an uplink precoder determined, for each respective sub-band of the sub-bands, based on a transmission precoder of the one or more SRS resources transmitted via the respective sub-band; and transmit, to the base station and based on the determined uplink precoders, a transport block of the transmission via the uplink resources.