# US 12,120,696 B2 · Scheduling of PDSCH transmission with DFT-s-OFDM waveform > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,696 B2 - Document ID: US12120696B2 - Status: Granted - Kind: B2 - Application number: 17/419,589 - Filed: 2020-02-03 - Published: 2022-03-10 - Granted: 2024-10-15 - Earliest claimed: 2019-02-01 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Gang Xiong; Yushu Zhang; Daewon Lee; Jie Zhu; Seunghee Han - Web page: https://patentgrep.com/patent/US12120696B2 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0092: {Indication of how the channel is divided} - H04L 5/02: Channels characterised by the type of signal - H04L 27/2636: {with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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 An approach is described for a wireless communication for a fifth generation (5G) or new radio (NR) system. The wireless communication includes a gNode (gNB) configured to indicate a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI), and to transmit a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size. ## Claims ### Claim 1 A method of wireless communication, the method comprising: indicating, by a base station (BS), a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI), wherein the one DFT size equals a number of subcarriers allocated for transmission within one Orthogonal Frequency Division Multiplexing (OFDM) symbol; and transmitting, by the BS and following a DFT operation, a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size, wherein the method further comprises: multiplexing, by the BS, a plurality of PDSCHs for one or more user equipments (UEs) in a time division multiplexing (TDM) manner; performing, by the BS, the DFT operation on the multiplexed plurality of PDSCHs, wherein the BS performs a multiple-step resource allocation for the plurality of PDSCHs with the DFT-s-OFDM waveform, wherein prior to performing the DFT operation, determining, by the BS, a time resources allocation of modulated symbols for PDSCH transmission within the one DFT size, and determining, by the BS, a frequency domain resource allocation and resource mapping after performing the DFT operation. ### Claim 2 (depends on 1) The method of claim 1, wherein for a given user equipment (UE), multiplexing, by the BS, a physical downlink control channel (PDCCH) and the PDSCH with the DFT-s-OFDM waveform in a time division multiplexing (TDM) manner prior to the DFT operation. ### Claim 3 (depends on 1) The method of claim 1, wherein the indicating by the BS includes using a starting and length indicator value (SLIV) to indicate the time domain resource allocation within the one OFDM symbol prior to the DFT operation. ### Claim 4 (depends on 1) The method of claim 1, wherein a starting physical resource block (PRB) position and the DFT size are configured by higher layers via new radio (NR) minimum system information (MSI). ### Claim 5 (depends on 1) The method of claim 1, wherein a starting physical resource block (PRB) position and a number of PRBs are configured by higher layers via new radio (NR) minimum system information (MSI). ### Claim 6 (depends on 1) The method of claim 1, wherein a starting physical resource block (PRB) position, a number of PRBs, or the DFT size is configured by higher layers via new radio (NR) remaining minimum system information (RMSI). ### Claim 7 (depends on 1) The method of claim 1, wherein a same DFT size is used for transmission of a physical downlink control channel (PDCCH) and the PDSCH. ### Claim 8 A wireless communication apparatus, comprising: a base station (BS) configured to: indicate a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI), wherein the one DFT size equals a number of subcarriers allocated for transmission within one Orthogonal Frequency Division Multiplexing (OFDM) symbol; and transmit, following a DFT operation, a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size; multiplex a plurality of PDSCHs for one or more user equipments (UEs) in a time division multiplexing (TDM) manner; and perform the DFT operation on the multiplexed plurality of PDSCHs, wherein the BS performs a multiple-step resource allocation for the plurality of PDSCHs with the DFT-s-OFDM waveform, and wherein prior to performing the DFT operation, determining, by the BS, a time resources allocation of modulated symbols for PDSCH transmission within the one DFT size, and determining, by the BS, a frequency domain resource allocation and resource mapping after performing the DFT operation. ### Claim 9 (depends on 8) The wireless communication apparatus of claim 8, for a given UE, the BS is configured to multiplex a physical downlink control channel (PDCCH) and the PDSCH with the DFT-s-OFDM waveform in a time division multiplexing (TDM) manner prior to the DFT operation. ### Claim 10 (depends on 8) The wireless communication apparatus of claim 8, wherein to indicate the time domain resource allocation includes using a starting and length indicator value (SLIV) to indicate the time domain resource allocation within the one OFDM symbol prior to the DFT operation. ### Claim 11 (depends on 8) The wireless communication apparatus of claim 8, wherein a starting physical resource block (PRB) position and the DFT size are configured by higher layers via new radio (NR) minimum system information (MSI). ### Claim 12 (depends on 8) The wireless communication apparatus of claim 8, wherein a starting physical resource block (PRB) position and a number of PRBs are configured by higher layers via new radio (NR) minimum system information (MSI). ### Claim 13 (depends on 8) The wireless communication apparatus of claim 8, wherein a starting physical resource block (PRB) position, a number of PRBs, or the DFT size is configured by higher layers via new radio (NR) remaining minimum system information (RMSI). ### Claim 14 (depends on 8) The wireless communication apparatus of claim 8, wherein a same DFT size is used for transmission of a physical downlink control channel (PDCCH) and the PDSCH. ### Claim 15 A non-transitory computer-readable media (CRM) comprising computer instructions, where upon execution of the computer instructions by one or more processors of a base station (BS), causes the one or more processors to: indicate a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI); and transmit, following a DFT operation, a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size; multiplex a plurality of PDSCHs for one or more user equipments (UEs) in a time division multiplexing (TDM) manner; perform the DFT operation on the multiplexed plurality of PDSCHs, wherein the BS performs a multiple-step resource allocation for the plurality of PDSCHs with the DFT-s-OFDM waveform, and wherein prior to performing the DFT operation, determining, by the BS, a time resources allocation of modulated symbols for PDSCH transmission within the one DFT size, and determine a frequency domain resource allocation and resource mapping after performing the DFT operation. ### Claim 16 (depends on 15) The non-transitory CRM of claim 15, wherein the one or more processors, prior to performing the DFT operation, determine a time resource allocation of modulated symbols for PDSCH transmission within the one DFT size and, after performing the DFT operation, determine a frequency domain resource allocation and resource mapping. ### Claim 17 (depends on 15) The non-transitory CRM of claim 15, wherein a starting physical resource block (PRB) position and the DFT size are configured by higher layers via new radio (NR) minimum system information (MSI). ### Claim 18 (depends on 15) The non-transitory CRM of claim 15, wherein a starting physical resource block (PRB) position and a number of PRBs are configured by higher layers via new radio (NR) minimum system information (MSI). ### Claim 19 (depends on 15) The non-transitory CRM of claim 15, wherein a starting physical resource block (PRB) position, a number of PRBs, or the DFT size is configured by higher layers via new radio (NR) remaining minimum system information (RMSI). ### Claim 20 (depends on 15) The non-transitory CRM of claim 15, wherein a same DFT size is used for transmission of a physical downlink control channel (PDCCH) and the PDSCH.