# US 12,193,027 B2 · Downlink and uplink channel transmission and monitoring in a wireless network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,027 B2 - Document ID: US12193027B2 - Status: Granted - Kind: B2 - Application number: 18/214,875 - Filed: 2023-06-27 - Published: 2024-02-22 - Granted: 2025-01-07 - Earliest claimed: 2016-02-03 - Assignees: Comcast Cable Communications, LLC - Applicants: Comcast Cable Communications, LLC - Inventors: Esmael Hejazi Dinan; Alireza Babaei - Web page: https://patentgrep.com/patent/US12193027B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A wireless device may receive one or more radio resource control (RRC) messages comprising configuration parameters for one or more unlicensed cells. The wireless device may selectively monitor a downlink physical control channel (PDCCH) on one of the unlicensed cells, depending on whether there is an uplink transmission or downlink transmission on another unlicensed cell. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device, one or more radio resource control (RRC) messages comprising configuration parameters for a plurality of secondary cells (SCells) comprising a first SCell and a second SCell; transmitting, during a time duration and via the second SCell, an uplink transmission; and based on the uplink transmission and until at least an end of the uplink transmission, not monitoring a physical downlink control channel (PDCCH) during the time duration for the first SCell. ### Claim 2 (depends on 1) The method of claim 1, wherein the first SCell is a lead cell. ### Claim 3 (depends on 1) The method of claim 1, wherein the first SCell is a lead cell with a lowest cell index of a plurality of cell indexes. ### Claim 4 (depends on 1) The method of claim 1, wherein the time duration comprises one or more symbols. ### Claim 5 (depends on 1) The method of claim 1, wherein the uplink transmission is a physical uplink shared channel (PUSCH) transmission. ### Claim 6 (depends on 1) The method of claim 1, wherein the PDCCH is an enhanced PDCCH. ### Claim 7 (depends on 1) The method of claim 1, wherein the first SCell and the second SCell belong to a cell group. ### Claim 8 (depends on 1) The method of claim 1, wherein the first SCell and the second SCell belong to a cell group comprising a plurality of cells that operate in a same frequency band. ### Claim 9 (depends on 1) The method of claim 1, wherein the one or more RRC messages further comprise one or more configuration parameters for a cell group that comprises the first SCell and the second SCell. ### Claim 10 (depends on 1) The method of claim 1, wherein the time duration is a partial uplink subframe. ### Claim 11 (depends on 1) The method of claim 1, wherein the time duration is a full uplink subframe. ### Claim 12 (depends on 1) The method of claim 1, wherein the first SCell and the second SCell operate according to frame structure Type 3. ### Claim 13 A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, configure the wireless device to: receive one or more radio resource control (RRC) messages comprising configuration parameters for a plurality of secondary cells (SCells) comprising a first SCell and a second SCell; transmit, during a time duration and via the second SCell, an uplink transmission; and based on the uplink transmission and until at least an end of the uplink transmission, not monitor a physical downlink control channel (PDCCH) during the time duration for the first SCell. ### Claim 14 (depends on 13) The wireless device of claim 13, wherein the first SCell is a lead cell. ### Claim 15 (depends on 13) The wireless device of claim 13, wherein the first SCell is a lead cell with a lowest cell index of a plurality of cell indexes. ### Claim 16 (depends on 13) The wireless device of claim 13, wherein the time duration comprises one or more symbols. ### Claim 17 (depends on 13) The wireless device of claim 13, wherein the uplink transmission is a physical uplink shared channel (PUSCH) transmission. ### Claim 18 (depends on 13) The wireless device of claim 13, wherein the PDCCH is an enhanced PDCCH. ### Claim 19 (depends on 13) The wireless device of claim 13, wherein the first SCell and the second SCell belong to a cell group. ### Claim 20 (depends on 13) The wireless device of claim 13, wherein the first SCell and the second SCell belong to a cell group comprising a plurality of cells that operate in a same frequency band. ### Claim 21 (depends on 13) The wireless device of claim 13, wherein the one or more RRC messages further comprise one or more configuration parameters for a cell group that comprises the first SCell and the second SCell. ### Claim 22 (depends on 13) The wireless device of claim 13, wherein the time duration is a partial uplink subframe. ### Claim 23 (depends on 13) The wireless device of claim 13, wherein the time duration is a full uplink subframe. ### Claim 24 (depends on 13) The wireless device of claim 13, wherein the first SCell and the second SCell operate according to frame structure Type 3. ### Claim 25 A system comprising: a base station; and a wireless device; wherein the base station is configured to transmit one or more radio resource control (RRC) messages comprising configuration parameters for a plurality of secondary cells (SCells) comprising a first SCell and a second SCell; and wherein the wireless device is configured to: transmit, during a time duration and via the second SCell, an uplink transmission; and based on the uplink transmission and until at least an end of the uplink transmission, not monitor a physical downlink control channel (PDCCH) during the time duration for the first SCell. ### Claim 26 (depends on 25) The system of claim 25, wherein the first SCell is a lead cell. ### Claim 27 (depends on 25) The system of claim 25, wherein the first SCell is a lead cell with a lowest cell index of a plurality of cell indexes. ### Claim 28 (depends on 25) The system of claim 25, wherein the time duration comprises one or more symbols. ### Claim 29 (depends on 25) The system of claim 25, wherein the uplink transmission is a physical uplink shared channel (PUSCH) transmission. ### Claim 30 (depends on 25) The system of claim 25, wherein the PDCCH is an enhanced PDCCH. ### Claim 31 (depends on 25) The system of claim 25, wherein the first SCell and the second SCell belong to a cell group. ### Claim 32 (depends on 25) The system of claim 25, wherein the first SCell and the second SCell belong to a cell group comprising a plurality of cells that operate in a same frequency band. ### Claim 33 (depends on 25) The system of claim 25, wherein the one or more RRC messages further comprise one or more configuration parameters for a cell group that comprises the first SCell and the second SCell. ### Claim 34 (depends on 25) The system of claim 25, wherein the time duration is a partial uplink subframe. ### Claim 35 (depends on 25) The system of claim 25, wherein the time duration is a full uplink subframe. ### Claim 36 (depends on 25) The system of claim 25, wherein the first SCell and the second SCell operate according to frame structure Type 3. ### Claim 37 A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to: receive one or more radio resource control (RRC) messages comprising configuration parameters for a plurality of secondary cells (SCells) comprising a first SCell and a second SCell; transmit, during a time duration and via the second SCell, an uplink transmission; and based on the uplink transmission and until at least an end of the uplink transmission, not monitoring a physical downlink control channel (PDCCH) during the time duration for the first SCell. ### Claim 38 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the first SCell is a lead cell. ### Claim 39 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the first SCell is a lead cell with a lowest cell index of a plurality of cell indexes. ### Claim 40 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the time duration comprises one or more symbols. ### Claim 41 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the uplink transmission is a physical uplink shared channel (PUSCH) transmission. ### Claim 42 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the PDCCH is an enhanced PDCCH. ### Claim 43 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the first SCell and the second SCell belong to a cell group. ### Claim 44 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the first SCell and the second SCell belong to a cell group comprising a plurality of cells that operate in a same frequency band. ### Claim 45 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the one or more RRC messages further comprise one or more configuration parameters for a cell group that comprises the first SCell and the second SCell. ### Claim 46 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the time duration is a partial uplink subframe. ### Claim 47 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the time duration is a full uplink subframe. ### Claim 48 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the first SCell and the second SCell operate according to frame structure Type 3.