# US 12,016,082 B2 · Secondary cell activation in new radio system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,016,082 B2 - Document ID: US12016082B2 - Status: Granted - Kind: B2 - Application number: 18/296,672 - Filed: 2023-04-06 - Published: 2023-08-10 - Granted: 2024-06-18 - Earliest claimed: 2020-02-12 - Assignees: MediaTek Singapore Pte. Ltd. - Applicants: MediaTek Singapore Pte. Ltd. - Inventors: Zhixun Tang; Tsang-Wei Yu; Hsuan-Li Lin - Web page: https://patentgrep.com/patent/US12016082B2 ## CPC - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 80/02: Data link layer protocols - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 17/328: {Reference signal received power [RSRP]; Reference signal received quality [RSRQ]} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 52/52: using AGC [Automatic Gain Control] circuits or amplifiers - H04W 56/001: {Synchronization between nodes} - H04W 76/27: Transitions between radio resource control [RRC] states - Y02D 30/70: in wireless communication networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A method of activating multiple secondary cells can include receiving on a primary cell (PCell) at a user equipment (UE) a first medium access (MAC) control element (CE) for activating a first secondary cell (SCell) and a second SCell for the UE in a wireless communication system. The first and second SCells can operate in a same band. No active serving cell operates on the same band for the UE. In response to that the first SCell is a known SCell, the second SCell is an unknown SCell, and both the first and second SCells operate in the same band that is a frequency range 2 (FR2) band, the first and second SCells can be activated in parallel without performing cell search and reference signal received power (RSRP) measurement and reporting over the first and second SCells. ## Claims ### Claim 1 A method, comprising: receiving on a primary cell (PCell) at a user equipment (UE) a first medium access (MAC) control element (CE) for activating a first secondary cell (SCell) and a second SCell for the UE from a base station in a wireless communication system, the first and second SCells operating in a same band, no active serving cell operating on the same band for the UE; and activating the first and second SCells in parallel in response to having the first SCell as a known SCell, the second SCell as an unknown SCell, and both the first and second SCells operating in the same band that is a frequency range 2 (FR2) band, wherein the activating the first and second SCells in parallel includes: receiving on the PCell a second MAC CE for indicating a first transmission configuration indication (TCI) state for receiving one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH) of the second SCell; and in response to receiving a third MAC CE on the PCell for activating a semi-persistent (SP) channel state information reference signal (CSI-RS) resource set of the second SCell, performing a channel state information (CSI) reporting process based on the SP CSI-RS resource set activated by the third MAC CE on the second SCell, and the first MAC CE for activating the first and second SCells is received in slot n, and a CSI report of the CSI reporting process based on the SP CSI-RS resource set activated by the third MAC CE on the second SCell is transmitted no later than in slot n + T HARQ + T a ⁢ c ⁢ t ⁢ i ⁢ v ⁢ a ⁢ tion ⁢ _ ⁢ time + T CSI ⁢ _ ⁢ reporting New ⁢ Radio ⁢ ( NR ) ⁢ slot ⁢ length , where: THARQ denotes a delay between a downlink data transmission associated with the first MAC CE and a corresponding hybrid automatic repeat request (HARQ) acknowledgement, TCSI_reporting denotes a delay including an uncertainty period in acquiring a first available downlink CSI resource during the CSI reporting process, processing time for the CSI report, and an uncertainty period in acquiring a first available CSI reporting resource, and Tactivation_time denotes an activation delay that is 3 ms+max(Tuncertainty_MAC+TFineTime+2 ms,Tuncertainty_SP), where, Tuncertainty_MAC denotes a period between a reception of the first MAC CE and a reception of a last one of the second MAC CE and a fourth MAC CE, wherein the fourth MAC CE indicates a second TCI state for receiving another one of the PDCCH and the PDSCH of the second SCell, TFineTime denotes a period between the UE completing processing of the last one of the second MAC CE and the fourth MAC CE, and a timing of a synchronization signal block (SSB) indicated in the first TCI state, and Tuncertainty_SP denotes a period between the reception of the first MAC CE and a reception of the third MAC CE. ### Claim 2 (depends on 1) The method of claim 1, wherein the activating the first and second SCells in parallel includes: in response to receiving on the PCell a radio resource control (RRC) message for configuring periodic CSI-RS of the second SCell, performing a CSI reporting process based on the periodic CSI-RS configured by the RRC message on the second SCell. ### Claim 3 (depends on 2) The method of claim 2, wherein the first MAC CE for activating the SCell is received in slot n, and a CSI report of the CSI reporting process based on the periodic CSI-RS of the second SCell is transmitted no later than in slot n + T HARQ + T a ⁢ c ⁢ t ⁢ i ⁢ v ⁢ a ⁢ tion ⁢ _ ⁢ time + T CSI ⁢ _ ⁢ reporting New ⁢ Radio ⁢ ( NR ) ⁢ slot ⁢ length , where: THARQ denotes a delay between a downlink data transmission associated with the first MAC CE and a corresponding HARQ acknowledgement, TCSI_reporting denotes a delay including an uncertainty period in acquiring a first available downlink CSI resource during the CSI reporting process, processing time for the CSI report, and an uncertainty period in acquiring a first available CSI reporting resource, and Tactivation_time denotes an activation delay that is max(Tuncertainty_MAC+5 ms+TFineTime,Tuncertainty_RRC+TRRC_delay−THARQ), where, Tuncertainty_MAC denotes a period between a reception of the first MAC CE and a reception of a last one of the second MAC CE and a fourth MAC CE, wherein the fourth MAC CE indicates a second TCI state for receiving another one of the PDCCH and the PDSCH of the second SCell, TFineTime denotes a period between the UE completing processing of the last one of the second MAC CE and the fourth MAC CE, and a timing of the SSB indicated in the first TCI state, Tuncertainty_RRC denotes a period between the reception of the first MAC CE and a reception of the RRC message, and TRRC_delay denotes a period for processing the RRC message. ### Claim 4 (depends on 1) The method of claim 1, further comprising: in response to that both the first and second SCells are unknown SCells and operate in the same band that is an FR2 band, performing a cell search on the first SCell; transmitting an RSRP measurement report indicating RSRP measurements associated with an SSB of the first SCell; and activating the second SCell without performing cell search and RSRP measurement and reporting over the second SCell. ### Claim 5 (depends on 1) The method of claim 1, further comprising: in response to that the first SCell is a known SCell, the second SCell is an unknown SCell, and both the first and second SCells operate in the same band that is a frequency range 1 (FR1) band, activating the first and second SCells in parallel without performing automatic gain control (AGC) gain settling and cell search over the first and second SCells. ### Claim 6 (depends on 1) The method of claim 1, wherein the PCell is a primary cell of a primary cell group (PCG), or a primary cell of a secondary cell group (SCG). ### Claim 7 An apparatus, comprising circuitry configured to: receive on a primary cell (PCell) at a user equipment (UE) a first medium access (MAC) control element (CE) for activating a first secondary cell (SCell) and a second SCell for the UE from a base station in a wireless communication system, the first and second SCells operating in a same band, no active serving cell operating on the same band for the UE; and activate the first and second SCells in parallel in response to having the first SCell as a known SCell, the second SCell as an unknown SCell, and both the first and second SCells operating in the same band that is a frequency range 2 (FR2) band, wherein, the activating the first and second SCells in parallel includes: receiving on the PCell a second MAC CE for indicating a first transmission configuration indication (TCI) state for receiving one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH) of the second SCell; and in response to receiving a third MAC CE on the PCell for activating a semi-persistent (SP) channel state information reference signal (CSI-RS) resource set of the second SCell, performing a channel state information (CSI) reporting process based on the SP CSI-RS resource set activated by the third MAC CE on the second SCell, and the first MAC CE for activating the first and second SCells is received in slot n, and a CSI report of the CSI reporting process based on the SP CSI-RS resource set activated by the third MAC CE on the second SCell is transmitted no later than in slot n + T HARQ + T a ⁢ c ⁢ t ⁢ i ⁢ v ⁢ a ⁢ tion ⁢ _ ⁢ time + T CSI ⁢ _ ⁢ reporting New ⁢ Radio ⁢ ( NR ) ⁢ slot ⁢ length , where: THARQ denotes a delay between a downlink data transmission associated with the first MAC CE and a corresponding hybrid automatic repeat request (HARQ) acknowledgement, TCSI_reporting denotes a delay including an uncertainty period in acquiring a first available downlink CSI resource during the CSI reporting process, processing time for the CSI report, and an uncertainty period in acquiring a first available CSI reporting resource, and Tactivation_time denotes an activation delay that is 3 ms+max(Tuncertainty_MAC+TFineTime+2 ms,Tuncertainty_SP), where, Tuncertainty_MAC denotes a period between a reception of the first MAC CE and a reception of a last one of the second MAC CE and a fourth MAC CE, wherein the fourth MAC CE indicates a second TCI state for receiving another one of the PDCCH and the PDSCH of the second SCell, TFineTime denotes a period between the UE completing processing of the last one of the second MAC CE and the fourth MAC CE, and a timing of a synchronization signal block (SSB) indicated in the first TCI state, and Tuncertainty_SP denotes a period between the reception of the first MAC CE and a reception of the third MAC CE. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the circuitry is further configured to: in response to receiving on the PCell a radio resource control (RRC) message for configuring periodic CSI-RS of the second SCell, perform a channel state information (CSI) reporting process based on the periodic CSI-RS configured by the RRC message on the second SCell. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the first MAC CE for activating the SCell is received in slot n, and a CSI report of the CSI reporting process based on the periodic CSI-RS configured by the RRC message on the second SCell is transmitted no later than in slot n + T HARQ + T a ⁢ c ⁢ t ⁢ i ⁢ v ⁢ a ⁢ tion ⁢ _ ⁢ time + T CSI ⁢ _ ⁢ reporting New ⁢ Radio ⁢ ( NR ) ⁢ slot ⁢ length , where: THARQ denotes a delay between a downlink data transmission associated with the first MAC CE and a corresponding hybrid automatic repeat request (HARQ) acknowledgement, TCSI_reporting denotes a delay including an uncertainty period in acquiring a first available downlink CSI resource during the CSI reporting process, processing time for the CSI report, and an uncertainty period in acquiring a first available CSI reporting resource, and Tactivation_time denotes an activation delay that is max(Tuncertainty_MAC+5 ms+TFineTime,Tuncertainty_RRC+TRRC_delay−THARQ), where, Tuncertainty_MAC denotes a period between a reception of the first MAC CE and a reception of a last one of the second MAC CE and a fourth MAC CE, wherein the fourth MAC CE indicates a TCI state for receiving the other one of the PDCCH and the PDSCH of the second SCell, TFineTime denotes a period between the UE completing processing of the last one of the second MAC CE and the fourth MAC CE, and a timing of the SSB indicated in the first TCI state, Tuncertainty_RRC denotes a period between the reception of the first MAC CE and a reception of the RRC message, and TRRC_delay denotes a period for processing the RRC message. ### Claim 10 (depends on 7) The apparatus of claim 7, wherein the circuitry is further configured to: in response to that both the first and second SCells are unknown SCells and operate in the same band that is an FR2 band, perform a cell search on the first SCell; transmit an RSRP measurement report indicating RSRP measurements associated with an SSB of the first SCell; and activate the second SCell without performing cell search and RSRP measurement and reporting over the second SCell. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the circuitry is further configured to: in response to that the first SCell is a known SCell, the second SCell is an unknown SCell, and both the first and second SCells operate in the same band that is a frequency range 1 (FR1) band, activate the first and second SCells in parallel without performing automatic gain control (AGC) gain settling and cell search over the first and second SCells. ### Claim 12 A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform a method, the method comprising: receiving on a primary cell (PCell) at a user equipment (UE) a first medium access (MAC) control element (CE) for activating a first secondary cell (SCell) and a second SCell for the UE from a base station in a wireless communication system, the first and second SCells operating in a same band, no active serving cell operating on the same band for the UE; and activating the first and second SCells in parallel in response to having the first SCell as a known SCell, the second SCell as an unknown SCell, and both the first and second SCells operating in the same band that is a frequency range 2 (FR2) band, wherein the first SCell is the known SCell when the UE has transmitted a, the activating the first and second SCells in parallel includes: receiving on the PCell a second MAC CE for indicating a first transmission configuration indication (TCI) state for receiving one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH) of the second SCell; and in response to receiving a third MAC CE on the PCell for activating a semi-persistent (SP) channel state information reference signal (CSI-RS) resource set of the second SCell, performing a channel state information (CSI) reporting process based on the SP CSI-RS resource set activated by the third MAC CE on the second SCell, and the first MAC CE for activating the first and second SCells is received in slot n, and a CSI report of the CSI reporting process based on the SP CSI-RS resource set activated by the third MAC CE on the second SCell is transmitted no later than in slot n + T HARQ + T a ⁢ c ⁢ t ⁢ i ⁢ v ⁢ a ⁢ tion ⁢ _ ⁢ time + T CSI ⁢ _ ⁢ reporting New ⁢ Radio ⁢ ( NR ) ⁢ slot ⁢ length , where: THARQ denotes a delay between a downlink data transmission associated with the first MAC CE and a corresponding hybrid automatic repeat request (HARQ) acknowledgement, TCSI_reporting denotes a delay including an uncertainty period in acquiring a first available downlink CSI resource during the CSI reporting process, processing time for the CSI report, and an uncertainty period in acquiring a first available CSI reporting resource, and Tactivation_time denotes an activation delay that is 3 ms+max(Tuncertainty_MAC+TFineTime+2 ms,Tuncertainty_SP), where, Tuncertainty_MAC denotes a period between a reception of the first MAC CE and a reception of a last one of the second MAC CE and a fourth MAC CE, wherein the fourth MAC CE indicates a second TCI state for receiving another one of the PDCCH and the PDSCH of the second SCell, TFineTime denotes a period between the UE completing processing of the last one of the second MAC CE and the fourth MAC CE, and a timing of a synchronization signal block (SSB) indicated in the first TCI state, and Tuncertainty_SP denotes a period between the reception of the first MAC CE and a reception of the third MAC CE. ### Claim 13 (depends on 12) The non-transitory computer-readable medium of claim 12, wherein the activating the first and second SCells in parallel includes: in response to receiving on the PCell a radio resource control (RRC) message for configuring periodic CSI-RS of the second SCell, performing a CSI reporting process based on the periodic CSI-RS configured by the RRC message on the second SCell. ### Claim 14 (depends on 13) The non-transitory computer-readable medium of claim 13, wherein the first MAC CE for activating the SCell is received in slot n, and a CSI report of the CSI reporting process based on the periodic CSI-RS of the second SCell is transmitted no later than in slot n + T HARQ + T activation_time + T CSI_reporting New ⁢ Radio ( NR ) ⁢ slot ⁢ length , where: THARQ denotes a delay between a downlink data transmission associated with the first MAC CE and a corresponding HARQ acknowledgement, TCSI_reporting denotes a delay including an uncertainty period in acquiring a first available downlink CSI resource during the CSI reporting process, processing time for the CSI report, and an uncertainty period in acquiring a first available CSI reporting resource, and Tactivation_time denotes an activation delay that is max(Tuncertainty_MAC+5 ms+TFineTime,Tuncertainty_RRC+TRRC_delay−THARQ), where, Tuncertainty_MAC denotes a period between a reception of the first MAC CE and a reception of a last one of the second MAC CE and a fourth MAC CE, wherein the fourth MAC CE indicates a second TCI state for receiving another one of the PDCCH and the PDSCH of the second SCell, TFineTime denotes a period between the UE completing processing of the last one of the second MAC CE and the fourth MAC CE, and a timing of the SSB indicated in the first TCI state, Tuncertainty_RRC denotes a period between the reception of the first MAC CE and a reception of the RRC message, and TRRC_delay denotes a period for processing the RRC message. ### Claim 15 (depends on 12) The non-transitory computer-readable medium of claim 12, wherein the method further comprises: in response to that both the first and second SCells are unknown SCells and operate in the same band that is an FR2 band, performing a cell search on the first SCell; transmitting an RSRP measurement report indicating RSRP measurements associated with an SSB of the first SCell; and activating the second SCell without performing cell search and RSRP measurement and reporting over the second SCell. ### Claim 16 (depends on 12) The non-transitory computer-readable medium of claim 12, wherein the method further comprises: in response to that the first SCell is a known SCell, the second SCell is an unknown SCell, and both the first and second SCells operate in the same band that is a frequency range 1 (FR1) band, activating the first and second SCells in parallel without performing automatic gain control (AGC) gain settling and cell search over the first and second SCells. ### Claim 17 (depends on 12) The non-transitory computer-readable medium of claim 12, wherein the PCell is a primary cell of a primary cell group (PCG), or a primary cell of a secondary cell group (SCG).