# US 12,184,581 B2 · User equipment, base station, and communication thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,184,581 B2 - Document ID: US12184581B2 - Status: Granted - Kind: B2 - Application number: 18/417,797 - Filed: 2024-01-19 - Published: 2024-05-16 - Granted: 2024-12-31 - Earliest claimed: 2023-02-24 - Assignees: Panasonic Intellectual Property Corporation of America - Applicants: Panasonic Intellectual Property Corporation of America - Inventors: Lilei Wang; Hidetoshi Suzuki - Web page: https://patentgrep.com/patent/US12184581B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/20: Control channels or signalling for resource management - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/27: Transitions between radio resource control [RRC] states - 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 There are provided a user equipment, a base station, and a communication thereof. The UE operative for sidelink transmission based on base station scheduling, comprising: a receiver, operative to receive first control information from a base station; determination circuitry, operative to determine whether a shortened time interval is used for a signaling interaction of the user equipment and the base station for sidelink transmission according to the received first control information; and a transmitter, operative to transmit second control information to the base station during the signaling interaction using the shortened time interval after the determination circuitry determines that the shortened time interval is used for the signaling interaction for sidelink transmission; wherein a length of the shortened time interval is less than a length of a standard time interval. ## Claims ### Claim 1 An integrated circuit to control a process, the process comprising: receiving first control information for a sidelink transmission from a base station; determining a shortened time interval used in signaling between a user equipment (UE) and the base station for the sidelink transmission according to the received first control information; and transmitting second control information to the base station using the shortened time interval, wherein the shortened time interval is less than a standard time interval that is used in signaling between the UE and another UE in the sidelink transmission, and a time offset between reception of the first control information and the sidelink transmission is configured. ### Claim 2 (depends on 1) The integrated circuit according to claim 1, comprising: circuitry which, in operation, controls the process; at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data. ### Claim 3 (depends on 1) The integrated circuit of claim 1, wherein the shortened time interval is a shortened transmission time interval (sTTI), the standard time interval is a transmission time interval (TTI), and the sTTI is a fraction of the TTI in terms of OFDM symbols. ### Claim 4 (depends on 1) The integrated circuit of claim 1, wherein the shortened time interval is a mini-slot or non-slot unit in a New Radio system, the standard time interval is a slot in the New Radio system, and the mini-slot or the non-slot is a fraction of the slot in terms of OFDM symbols. ### Claim 5 (depends on 1) The integrated circuit of the claim 1, wherein the first control information comprises one or more of downlink control information (DCI) and radio resource control (RRC) signaling, and wherein the determining include determining whether the shortened time interval is used for the signaling according to the one or more of the DCI and RRC signaling. ### Claim 6 (depends on 1) The integrated circuit of claim 1, wherein when receiving the first control information within a control resource that is specially specified for the shortened time interval, the determining includes determining that the shortened time interval is used for the signaling. ### Claim 7 (depends on 1) The integrated circuit of claim 1, wherein the first control information comprises downlink control information (DCI), and wherein when receiving the DCI within a control resource that is shared by the shortened time interval and the standard time interval, the determining includes determining whether the shortened time interval is used for the signaling according to one or more of a search space in the UE and a size of the DCI. ### Claim 8 (depends on 1) The integrated circuit of claim 1, wherein the first control information comprises sidelink related downlink control information (DCI), and a time of transmitting the sidelink transmission by the UE is not earlier than a first time determined according to one of the following equations a) and b): T DL - N TA 2 × Ts + m × 10 - 3 + Y × S a ) T DL - N TA 2 × Ts + ( X + m ) × 10 - 3 b ) wherein T DL - N TA 2 × Ts indicates a time that base station transmits the sidelink related DCI, m indicates a time offset, S indicates a length of the shortened time interval in second (s), and X and Y relate to a capacity of the UE and are configured by radio resource control (RRC) signalling or predetermined. ### Claim 9 (depends on 1) The integrated circuit of claim 1, wherein: the process comprises selecting the shortened time interval or the standard time interval for the signaling between the UE and the base station for the sidelink transmission, and transmitting a report indicating the selected time interval for the signaling via one or more of a scheduling request and a buffer-status report. ### Claim 10 (depends on 4) The integrated circuit of claim 4, wherein after determining that the mini-slot or the non-slot unit is used for the signaling in the New Radio system, the UE performs the sidelink transmission using the mini-slot or the non-slot unit. ### Claim 11 An integrated circuit comprising circuitry, which, in operation: controls receiving first control information for a sidelink transmission from a base station; determines a shortened time interval used in signaling between a user equipment (UE) and the base station for the sidelink transmission according to the received first control information; and controls transmitting second control information to the base station using the shortened time interval, wherein the shortened time interval is less than a standard time interval that is used in signaling between the UE and another UE in the sidelink transmission, and a time offset between reception of the first control information and the sidelink transmission is configured. ### Claim 12 (depends on 11) The integrated circuit according to claim 11, comprising: at least one input coupled to the circuitry, wherein the at least one input, in operation, inputs data; and at least one output coupled to the circuitry, wherein the at least one output, in operation, outputs data. ### Claim 13 (depends on 11) The integrated circuit of claim 11, wherein the shortened time interval is a shortened transmission time interval (sTTI), the standard time interval is a transmission time interval (TTI), and the sTTI is a fraction of the TTI in terms of OFDM symbols. ### Claim 14 (depends on 11) The integrated circuit of claim 11, wherein the shortened time interval is a mini-slot or non-slot unit in a New Radio system, the standard time interval is a slot in the New Radio system, and the mini-slot or the non-slot is a fraction of the slot in terms of OFDM symbols. ### Claim 15 (depends on 11) The integrated circuit of the claim 11, wherein the first control information comprises one or more of downlink control information (DCI) and radio resource control (RRC) signaling, and wherein the circuitry, in operation, determines whether the shortened time interval is used for the signaling according to the one or more of the DCI and RRC signaling. ### Claim 16 (depends on 11) The integrated circuit of claim 11, wherein when receiving the first control information within a control resource that is specially specified for the shortened time interval, the circuitry, in operation, determines that the shortened time interval is used for the signaling. ### Claim 17 (depends on 11) The integrated circuit of claim 11, wherein the first control information comprises downlink control information (DCI), and wherein when receiving the DCI within a control resource that is shared by the shortened time interval and the standard time interval, the circuitry, in operation, determines whether the shortened time interval is used for the signaling according to one or more of a search space in the UE and a size of the DCI. ### Claim 18 (depends on 11) The integrated circuit of claim 11, wherein the first control information comprises sidelink related downlink control information (DCI), and a time of transmitting the sidelink transmission by the UE is not earlier than a first time determined according to one of the following equations a) and b): T DL - N TA 2 × Ts + m × 10 - 3 + Y × S a ) T DL - N TA 2 × Ts + ( X + m ) × 10 - 3 b ) wherein T DL - N TA 2 × Ts indicates a time that base station transmits the sidelink related DCI, m indicates a time offset, S indicates a length of the shortened time interval in second (s), and X and Y relate to a capacity of the UE and are configured by radio resource control (RRC) signalling or predetermined. ### Claim 19 (depends on 11) The integrated circuit of claim 11, wherein: the circuitry, in operation, selects the shortened time interval or the standard time interval for the signaling between the UE and the base station for the sidelink transmission, and controls transmitting a report indicating the selected time interval for the signaling via one or more of a scheduling request and a buffer-status report. ### Claim 20 (depends on 14) The integrated circuit of claim 14, wherein after determining that the mini-slot or the non-slot unit is used for the signaling in the New Radio system, the UE performs the sidelink transmission using the mini-slot or the non-slot unit.