# US 12,010,534 B2 · User terminal and radio communication method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,534 B2 - Document ID: US12010534B2 - Status: Granted - Kind: B2 - Application number: 16/337,612 - Filed: 2017-09-29 - Published: 2020-01-30 - Granted: 2024-06-11 - Earliest claimed: 2016-09-29 - Assignees: Ntt Docomo, Inc. - Applicants: Ntt Docomo, Inc. - Inventors: Hiroki Harada; Kazuki Takeda; Satoshi Nagata - Web page: https://patentgrep.com/patent/US12010534B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04L 5/0082: {at predetermined intervals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - 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 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 8/24: Transfer of terminal data - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1221: {based on age of data to be sent} - 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) ## Abstract The present invention is designed so that DL controls channels are monitored adequately even when the unit of scheduling in the time direction is subject to control. According to the present invention, a user terminal monitors a downlink (DL) control channel and receives downlink control information (DCI), and this user terminal has a receiving section that receives time interval information, which shows a time interval for monitoring the DL control channel, and a control section that controls monitoring of the DL control channel based on the time interval information. ## Claims ### Claim 1 A terminal comprising: a receiver that receives time interval information that indicates a time interval for monitoring a physical downlink control channel (PDCCH) and downlink control information, formatted in a downlink control information format, that includes blank resource information that indicates a blank resource; and a processor that controls rate matching of a physical downlink shared channel (PDSCH) based on the time interval information, the downlink control information format, and the blank resource information in the downlink control information, wherein the blank resource is a resource for the PDCCH, wherein a time interval in which the PDCCH is transmitted is different from the time interval in which the PDCCH is monitored, and the processor assumes that the PDSCH is not mapped to the blank resource. ### Claim 2 (depends on 1) The terminal according to claim 1, wherein the receiver receives the time interval information by higher layer signaling. ### Claim 3 (depends on 1) The terminal according to claim 1, wherein the receiver receives an information element including: the time interval information that indicates the time interval; and a number of resources to monitor corresponding to one or more aggregation levels for the downlink control information format. ### Claim 4 A radio communication method for a terminal, comprising: receiving time interval information that indicates a time for monitoring a physical downlink control channel (PDCCH) and downlink control information, formatted in a downlink control information format, that includes blank resource information that indicates a blank resource; and controlling rate matching of a physical downlink shared channel (PDSCH) based on the time interval information, the format of the downlink control information, and the blank resource information in the downlink control information, wherein the blank resource is a resource for the PDCCH, wherein a time interval in which the PDCCH is transmitted is different from the time interval in which the PDCCH is monitored, and the terminal assumes that the PDSCH is not mapped to the blank resource. ### Claim 5 A radio base station comprising: a transmitter that transmits time interval information that indicates a time interval for monitoring a physical downlink control channel (PDCCH) and downlink control information, formatted in a downlink control information format, that includes blank resource information that indicates a blank resource, wherein the transmitter transmits a physical downlink shared channel (PDSCH) to be rate matched based on the time interval information, the format of the downlink control information, and the blank resource information in the downlink control information; and a processor that controls such that the PDSCH is not mapped to the blank resource, wherein the blank resource is a resource for the PDCCH, and wherein a time interval in which the PDCCH is transmitted is different from the time interval in which the PDCCH is monitored. ### Claim 6 A radio communication system comprising: a radio base station; and a terminal, wherein the radio base station comprises: a transmitter that transmits time interval information that indicates a time interval for monitoring a physical downlink control channel (PDCCH) and downlink control information, formatted in a downlink control information format, that includes blank resource information that indicates a blank resource, wherein the transmitter transmits a physical downlink shared channel (PDSCH) to be rate matched based on the time interval information, the format of the downlink control information, and the blank resource information in the downlink control information; and a processor that controls such that the PDSCH is not mapped to the blank resource; and the terminal comprises: a receiver that receives the time interval information and the downlink control information, formatted in the downlink control information format, that includes the blank resource information; and a processor that controls rate matching of the PDSCH based on the time interval information, the format of the downlink control information, and the blank resource information in the downlink control information and that assumes that the PDSCH is not mapped to the blank resource, wherein the blank resource is a resource for the PDCCH, and wherein a time interval in which the PDCCH is transmitted is different from the time interval in which the PDCCH is monitored. ### Claim 7 (depends on 6) The radio communication system according to claim 6, wherein the receiver receives an information element including: the time interval information that indicates the time interval; and a number of resources to monitor corresponding to one or more aggregation levels for the downlink control information format.