# US 2020/0404653 A1 · 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 2020/0404653 A1 - Document ID: US20200404653A1 - Status: Published application - Kind: A1 - Application number: 16/975,551 - Filed: 2018-02-26 - Published: 2020-12-24 - Earliest claimed: 2018-02-26 - Assignees: Ntt Docomo, Inc. - Applicants: Ntt Docomo, Inc. - Inventors: Yuki Matsumura; Kazuki Takeda; Satoshi Nagata - Web page: https://patentgrep.com/patent/US20200404653A1 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1893: {Physical mapping arrangements (physical resource mapping in general H04L5/00)} - H04L 5/0016: {Time-frequency-code} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 In future radio communication systems, an uplink control channel will be transmitted properly. A user terminal comprising, a receiving section that receives at least one downlink assignment, and receives at least one downlink shared channel scheduled by the at least one downlink assignment, and a control section that controls transmission of a delivery acknowledgment signal, by using at least one of an uplink control channel format and mapping of the delivery acknowledgment signal, associated with at least one of whether or not configuration for using a dynamic delivery acknowledgment signal codebook for the at least one downlink shared channel is configured, the number of bits of the delivery acknowledgment signal in response to the at least one downlink shared channel, whether or not the at least one downlink assignment is transmitted by one frequency resource, and the number of codewords for each downlink shared channel. ## Claims ### Claim at position 1 -6. (canceled) ### Claim 7 A terminal comprising: a receiving section that receives at least one downlink shared channel scheduled by at least one downlink control channel; and a control section that controls, when configured to use a dynamic delivery acknowledgment signal codebook for the at least one downlink shared channel, to transmit a delivery acknowledgment signal for the at least one downlink shared channel based on a value of a total downlink assignment indicator included in the at least one downlink control channel, wherein, when the at least one downlink control channel is allocated to different time resources, the value of the total downlink assignment indicator included in each of the at least one downlink control channel denotes a number of downlink assignments arranged along the time direction and the frequency direction. ### Claim 8 (depends on 7) The terminal according to claim 7, wherein, in a mapping of the delivery acknowledgment signal, at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a value 0 of a one-bit delivery acknowledgment signal is equal to at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a two-bit delivery acknowledgment signal of (0, 0), and at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a value 1 of a one-bit delivery acknowledgment signal is equal to at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a two-bit delivery acknowledgment signal of (1, 0). ### Claim 9 (depends on 7) The terminal according to claim 7, wherein, in a mapping of the delivery acknowledgment signal, at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a value 0 of a one-bit delivery acknowledgment signal is equal to at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a two-bit delivery acknowledgment signal of (0, 0), and at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a value 1 of a one-bit delivery acknowledgment signal is equal to at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a two-bit delivery acknowledgment signal of (1, 0). ### Claim 10 (depends on 7) The terminal according to claim 7, wherein the control section determines the number of delivery acknowledgment signal bits based on the value of the total downlink assignment indicator. ### Claim 11 A radio communication method for a terminal, comprising: receiving at least one downlink shared channel scheduled by at least one downlink control channel; and when configured to use a dynamic delivery acknowledgment signal codebook for the at least one downlink shared channel, controlling to transmit the delivery acknowledgment signal for the at least one downlink shared channel based on a value of a total downlink assignment indicator included in the at least one downlink control channel, wherein, when the at least one downlink control channel is allocated to different time resources, the value of the total downlink assignment indicator included in each of the at least one downlink control channel denotes a number of downlink assignments arranged along the time direction and the frequency direction. ### Claim 12 A base station comprising: a transmitting section that transmits to a terminal at least one downlink control channel for scheduling at least one downlink shared channel; and a receiving section that receives from the terminal, when the terminal is configured to use a dynamic delivery acknowledgment signal codebook for the at least one downlink shared channel, the delivery acknowledgment signal for the at least one downlink shared channel, which is transmitted based on a value of a total downlink assignment indicator included in the at least one downlink control channel, wherein, when the at least one downlink control channel is allocated to different time resources, the value of the total downlink assignment indicator included in each of the at least one downlink control channel denotes a number of downlink assignments arranged along the time direction and the frequency direction. ### Claim 13 (depends on 8) The terminal according to claim 8, wherein, in a mapping of the delivery acknowledgment signal, at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a value 0 of a one-bit delivery acknowledgment signal is equal to at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a two-bit delivery acknowledgment signal of (0, 0), and at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a value 1 of a one-bit delivery acknowledgment signal is equal to at least one of a cyclic shift and a complex-valued modulation symbol that are mapped to a scheduling request and a two-bit delivery acknowledgment signal of (1, 0).