# US 12,010,070 B2 · Bandwidth part management in a secondary cell of a wireless device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,070 B2 - Document ID: US12010070B2 - Status: Granted - Kind: B2 - Application number: 16/904,184 - Filed: 2020-06-17 - Published: 2020-10-08 - Granted: 2024-06-11 - Earliest claimed: 2017-10-27 - Assignees: Ofinno, LLC - Applicants: Ofinno, LLC - Inventors: Hua Zhou; Esmael Dinan; Hyoungsuk Jeon; Alireza Babaei; Kyungmin Park; Ali Cirik - Web page: https://patentgrep.com/patent/US12010070B2 ## CPC - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04B 7/06964: {Re-selection of one or more beams after beam failure} - H04B 7/088: {using beam selection} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 76/38: triggered by timers - 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 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 74/0838: using contention-free random access [CFRA] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - 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 receives configuration parameters of a cell. The cell comprises bandwidth parts (BWPs). The BWPs comprise a first active BWP. The configuration parameters comprise a timer value for a BWP inactivity timer. A first downlink control information (DCI) indicating an activation of the cell is received. In response to the first DCI indicating the activation of the cell: the first active BWP is activated; and the BWP inactivity timer is started based on the timer value. During the BWP inactivity timer running, a second DCI is received via the first active BWP. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device, configuration parameters of a cell, wherein: the cell comprises bandwidth parts (BWPs) comprising a first BWP and at least a second BWP; the configuration parameters comprise a timer value for a BWP inactivity timer; and the cell and the BWPs are in an inactive state; receiving a first downlink control information (DCI) indicating an activation of the cell; in response to the first DCI indicating the activation of the cell: activating the cell; activating the first BWP; and starting the BWP inactivity timer based on the timer value; and switching, while the BWP inactivity timer is running, to a default BWP from the first BWP in response to a reconfiguration to the default BWP. ### Claim 2 (depends on 1) The method of claim 1, wherein the first DCI does not indicate downlink scheduling information of the first BWP. ### Claim 3 (depends on 1) The method of claim 1, wherein the wireless device receives the first DCI via a downlink control channel of a second cell. ### Claim 4 (depends on 1) The method of claim 1, wherein the cell is a secondary cell of a plurality of cells. ### Claim 5 (depends on 1) The method of claim 1, wherein a bandwidth of the first BWP is smaller than a bandwidth of the cell. ### Claim 6 (depends on 1) The method of claim 1, wherein the configuration parameters of the cell indicate at least one of: a frequency location; a bandwidth; a value of subcarrier spacing; a cyclic prefix; and one or more reference signal resource configuration. ### Claim 7 (depends on 1) The method of claim 1, further comprising monitoring a downlink control channel of the first active BWP in response to the activating the first BWP. ### Claim 8 (depends on 1) The method of claim 1, further comprising: receiving, during the BWP inactivity timer being running, a second DCI via the first active BWP; and receiving a downlink transport block based on receiving the second DCI. ### Claim 9 (depends on 1) The method of claim 1, further comprising switching to the default BWP from the first BWP in response to an expiry of the BWP inactivity timer. ### Claim 10 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, configuration parameters of a cell, wherein: the cell comprises bandwidth parts (BWPs) comprising a first BWP and at least a second BWP; the configuration parameters comprise a timer value for a BWP inactivity timer; and the cell and the BWPs are in an inactive state; receive a first downlink control information (DCI) indicating an activation of the cell; in response to the first DCI indicating the activation of the cell: activate the cell; activate the first BWP; and start the BWP inactivity timer based on the timer value; and switching, while the BWP inactivity timer is running, to a default BWP from the first BWP in response to a reconfiguration to the default BWP. ### Claim 11 (depends on 10) The wireless device of claim 10, wherein the first DCI does not indicate downlink scheduling information of the first active BWP. ### Claim 12 (depends on 10) The wireless device of claim 10, wherein the wireless device receives the first DCI via a downlink control channel of a second cell. ### Claim 13 (depends on 10) The wireless device of claim 10, wherein a bandwidth of the first BWP is smaller than a bandwidth of the cell. ### Claim 14 (depends on 10) The wireless device of claim 10, wherein the configuration parameters of the cell indicate at least one of: a frequency location; a bandwidth; a value of subcarrier spacing; a cyclic prefix; and one or more reference signal resource configuration. ### Claim 15 (depends on 10) The wireless device of claim 10, wherein the instructions, when executed by the one or more processors, further cause the wireless device to monitor a downlink control channel of the first active BWP in response to the activation the first BWP. ### Claim 16 (depends on 10) The wireless device of claim 10, wherein the instructions, when executed by the one or more processors, further cause the wireless device to: receive, during the BWP inactivity timer being running, a second DCI via the first active BWP; and receive a downlink transport block based on receiving the second DCI. ### Claim 17 (depends on 10) The wireless device of claim 10, wherein the instructions, when executed by the one or more processors, further cause the wireless device to switch to the default BWP from the first BWP in response to an expiry of the BWP inactivity timer. ### Claim 18 A system comprising: a base station comprising: one or more first processors; and first memory storing first instructions that, when executed by the one or more first processors, cause the base station to: transmit configuration parameters of a cell, wherein: the cell comprises bandwidth parts (BWPs) comprising a first BWP and at least a second BWP; the configuration parameters comprise a timer value for a BWP inactivity timer; and the cell and the BWPs are in an inactive state; transmit a first downlink control information (DCI) indicating an activation of the cell; and a wireless device comprising: one or more second processors; and second memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to: receive the configuration parameters of the cell; receive the first DCI; in response to the first DCI indicating the activation of the cell: activate the cell; activate the first BWP; and start the BWP inactivity timer based on the timer value; and switch, while the BWP inactivity timer is running, to a default BWP from the first BWP in response to a reconfiguration to the default BWP.