# US 10,321,443 B2 · Method for performing a PUCCH transmission on a deactivated PUCCH SCell in a carrier aggregation system and a device therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,321,443 B2 - Document ID: US10321443B2 - Status: Granted - Kind: B2 - Application number: 15/551,263 - Filed: 2016-03-08 - Published: 2018-03-01 - Granted: 2019-06-11 - Earliest claimed: 2015-04-01 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sunyoung Lee; Seungjune Yi - Web page: https://patentgrep.com/patent/US10321443B2 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/18: Automatic repetition systems, e.g. Van Duuren systems - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 76/27: Transitions between radio resource control [RRC] states - 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 The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing PUCCH transmission in a carrier aggregation system, the method comprising: receiving an indicator for configuring on a first Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource; deactivating the first SCell; and transmitting PUCCH signal on the first SCell configured with the PUCCH resource while the first SCell is in a deactivated status. ## Claims ### Claim 1 A method for a User Equipment (UE) operating in a wireless communication system, the method comprising: receiving an indicator for configuring on a first Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource; deactivating the first SCell; and transmitting only Hybrid Automatic Repeat reQuest (HARQ) feedback on the first SCell configured with the PUCCH resource while the first SCell is in a deactivated status. ### Claim 2 (depends on 1) The method according to claim 1, wherein the HARQ feedback is HARQ feedback of all SCells in a PUCCH group including the first SCell. ### Claim 3 (depends on 1) The method according to claim 1, wherein when the first SCell is deactivated, the UE doesn't transmit Sounding Reference Signal (SRS) on the first SCell, the UE doesn't report Channel Quality Indicator (CQI), Precoding Matrix Index (PMI), Rank Indicator (RI), or Precoding Type Indicator (PTI) for the first SCell, the UE doesn't transmit on Uplink-Shared Channel (UL-SCH) on the first SCell, the UE doesn't transmit on Random Access Channel (RACH) on the first SCell, the UE doesn't monitor the Physical Downlink Control Channel (PDCCH) on the first SCell, or the UE doesn't monitor the PDCCH for the first SCell. ### Claim 4 (depends on 1) The method according to claim 1, wherein when the UE receives a Medium Access Control (MAC) Control Element (CE) which deactivates the first SCell, the first SCell is deactivated. ### Claim 5 (depends on 1) The method according to claim 1, wherein when a sCellDeactivationTimer associated with the first SCell expires, the first SCell is deactivated. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: receiving a Radio Resource Control (RRC) message which configures PUCCH resource on a second SCell which is in deactivated status; and starting to use the second SCell for transmitting PUCCH signal of a PUCCH group to which the second SCell belongs. ### Claim 7 A User Equipment (UE) operating in a wireless communication system, the UE comprising: a Radio Frequency (RF) module; and a processor configured to control the RF module, wherein the processor is configured to receive an indicator for configuring on a first Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource, to deactivate the first SCell, and to transmit only Hybrid Automatic Repeat reQuest (HARQ) feedback on the first SCell configured with the PUCCH resource while the first SCell is in a deactivated status. ### Claim 8 (depends on 7) The UE according to claim 7, wherein the HARQ feedback comprises HARQ feedback of all SCells in a PUCCH group including the first SCell. ### Claim 9 (depends on 7) The UE according to claim 7, wherein when the first SCell is deactivated, the UE doesn't transmit Sounding Reference Signal (SRS) on the first SCell, the UE doesn't report Channel Quality Indicator (CQI), Precoding Matrix Index (PMI), Rank Indicator (RI), or Precoding Type Indicator (PTI) for the first SCell, the UE doesn't transmit on Uplink-Shared Channel (UL-SCH) on the first SCell, the UE doesn't transmit on Random Access Channel (RACH) on the first SCell, the UE doesn't monitor the Physical Downlink Control Channel (PDCCH) on the first SCell, or the UE doesn't monitor the PDCCH for the first SCell. ### Claim 10 (depends on 7) The UE according to claim 7, wherein when the UE receives a Medium Access Control (MAC) Control Element (CE) which deactivates the first SCell, the first SCell is deactivated. ### Claim 11 (depends on 7) The UE according to claim 7, wherein when a sCellDeactivationTimer associated with the first SCell expires, the first SCell is deactivated. ### Claim 12 (depends on 7) The UE according to claim 7, wherein the processor is further configured to receive a Radio Resource Control (RRC) message which configures PUCCH resource on a second SCell which is in deactivated status, and to start to use the second SCell for transmitting PUCCH signal of a PUCCH group to which the second SCell belongs.