# US 12,113,620 B2 · Short physical uplink control channel (sPUCCH) structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,620 B2 - Document ID: US12113620B2 - Status: Granted - Kind: B2 - Application number: 16/960,937 - Filed: 2019-01-09 - Published: 2020-10-29 - Granted: 2024-10-08 - Earliest claimed: 2018-01-10 - Assignees: InterDigital Patent Holdings, Inc. - Applicants: Interdigital Patent Holdings, Inc. - Inventors: Alphan Sahin; Rui Yang; Erdem Bala; Shahrokh Nayeb Nazar - Web page: https://patentgrep.com/patent/US12113620B2 ## CPC - H04L 1/1607: Details of the supervisory signal - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 27/2607: {Cyclic extensions} - H04L 27/2615: {Reduction thereof using coding} - H04L 27/2634: {Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation} - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0023: {Time-frequency-space} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - 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 27/2067: {with more than two phase states (H04L27/2064 takes precedence)} - 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 A wireless transmit/receive unit (WTRU) may modulate, based on a number of uplink control bits, a first sequence or the first sequence and a second sequence. The WTRU may spread the first sequence and the second sequence with a complementary sequence pair, concatenate parts of the first sequence and the second sequence in interlaced resource blocks (RBs), and perform an inverse discrete Fourier transform (IDFT) on the interlaced parts. The WTRU may transmit on a physical uplink control channel (PUCCH) a signal outputted by the IDFT. ## Claims ### Claim 1 A method performed by a wireless transmit/receive unit (WTRU), the method comprising: transmitting a first cyclically shifted version of a base sequence in a first resource block (RB) of an interlace of a plurality of RBs of a physical uplink control channel (PUCCH), the first cyclically shifted version of the base sequence having a first cyclic shift which is a function of an index of the first RB; and transmitting a second cyclically shifted version of the base sequence in a second RB of the interlace, the second cyclically shifted version of the base sequence having a second cyclic shift which is a function of an index of the second RB. ### Claim 2 (depends on 1) The method of claim 1, wherein the PUCCH is transmitted over an unlicensed carrier. ### Claim 3 (depends on 1) The method of claim 1, wherein the plurality of RBs of the interlace are distributed evenly over a channel bandwidth. ### Claim 4 (depends on 3) The method of claim 3, wherein the distribution is achieved using orthogonal spreading sequences. ### Claim 5 (depends on 1) The method of claim 1, wherein, after the first and second base sequences being cyclically shifted, the first and second RBs are mapped to the interlace using a block-interleaved frequency division multiple access (B-IFDMA) waveform. ### Claim 6 A wireless transmit/receive unit (WTRU) comprising: a transmitter configured to transmit a first cyclically shifted version of a base sequence in a first resource block (RB) of an interlace of a plurality of RBs of a physical uplink control channel (PUCCH), the first cyclically shifted version of the base sequence having a first cyclic shift which is a function of an index of the first RB; and the transmitter configured to transmit a second cyclically shifted version of the base sequence in a second RB of the interlace, the second cyclically shifted version of the base sequence having a second cyclic shift which is a function of an index of the second RB. ### Claim 7 (depends on 6) The WTRU of claim 6, wherein the PUCCH is transmitted over an unlicensed carrier. ### Claim 8 (depends on 6) The WTRU of claim 6, wherein the plurality of RBs of the interlace are distributed evenly over a channel bandwidth. ### Claim 9 (depends on 8) The WTRU of claim 8, wherein the distribution is achieved using orthogonal spreading sequences. ### Claim 10 (depends on 6) The WTRU of claim 6, wherein the first and second cyclically shifted base sequences of the first and second RBs are mapped to the interlace using a block-interleaved frequency division multiple access (B-IFDMA) waveform. ### Claim 11 A method performed by a wireless transmit/receive unit (WTRU), the method comprising: receiving a downlink transmission; transmitting a first physical uplink control channel (PUCCH) signal in a first resource block (RB) of an interlace of a plurality of RBs, the first PUCCH signal comprising a base sequence having a cyclic shift which is a function of an index of the first RB; and transmitting a second PUCCH signal in a second RB of the interlace of the plurality of RBs, the second PUCCH signal comprising the base sequence having a cyclic shift which is a function of an index of the second RB, wherein the cyclic shift of the first RB is different than the cyclic shift of the second RB, wherein the base sequence of the first PUCCH signal and the second PUCCH signal comprise information indicating either an acknowledgement (ACK) or a negative ACK (NACK) of the downlink transmission. ### Claim 12 (depends on 11) The method of claim 11, wherein the first PUCCH signal and the second PUCCH signal are transmitted over an unlicensed carrier. ### Claim 13 (depends on 11) The method of claim 11, wherein the plurality of RBs of the interlace are distributed evenly over a channel bandwidth. ### Claim 14 (depends on 13) The method of claim 13, wherein the distribution is achieved using orthogonal spreading sequences. ### Claim 15 (depends on 11) The method of claim 11, wherein, after the base sequence being cyclically shifted, the first and second RBs are mapped to the interlace using a block-interleaved frequency division multiple access (B-IFDMA) waveform.