Patent Description:
Method, and respective apparatus for sending uplink control information, UCI, on physical uplink control channel, PUCCH, in an unlicensed band according to claims <NUM>,<NUM>.

Furthermore, like reference numerals in the figures indicate like elements, and wherein:.

For example, the communications system <NUM> may employ one or more channel access methods, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), single-carrier FDMA (SC-FDMA), zero-tail unique-word discrete Fourier transform spread orthogonal frequency division multiplexing (ZT UW DFT-s OFDM), unique word OFDM (UW-OFDM), resource block-filtered OFDM, filter bank multicarrier (FBMC), and the like.

As shown in <FIG>, the communications system <NUM> may include wireless transmit/receive units (WTRUs) 102a, 102b, 102c, 102d, a radio access network (RAN) <NUM>, a core network (CN) <NUM>, a public switched telephone network (PSTN) <NUM>, the Internet <NUM>, and other networks <NUM>, though it will be appreciated that the disclosed embodiments contemplate any number of WTRUs, base stations, networks, and/or network elements. By way of example, the WTRUs 102a, 102b, 102c, 102d, any of which may be referred to as a "station" and/or a "STA", may be configured to transmit and/or receive wireless signals and may include a user equipment (UE), a mobile station, a fixed or mobile subscriber unit, a subscription-based unit, a pager, a cellular telephone, a personal digital assistant (PDA), a smartphone, a laptop, a netbook, a personal computer, a wireless sensor, a hotspot or Wi-Fi device, an Internet of Things (IoT) device, a watch or other wearable, a head-mounted display (HMD), a vehicle, a drone, a medical device and applications (e.g., remote surgery), an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts), a consumer electronics device, a device operating on commercial and/or industrial wireless networks, and the like.

The communications system <NUM> may also include a base station 114a and/or a base station 114b. Each of the base stations 114a, 114b may be any type of device configured to wirelessly interface with at least one of the WTRUs 102a, 102b, 102c, 102d to facilitate access to one or more communication networks, such as the CN <NUM>, the Internet <NUM>, and/or the other networks <NUM>. By way of example, the base stations 114a, 114b may be a base transceiver station (BTS), a Node-B, an eNode B, a Home Node B, a Home eNode B, a next generation node b (gNB), a new radio (NR) NodeB, a site controller, an access point (AP), a wireless router, and the like.

The base station 114a may be part of the RAN <NUM>, which may also include other base stations and/or network elements (not shown), such as a base station controller (BSC), a radio network controller (RNC), relay nodes, etc. The base station 114a and/or the base station 114b may be configured to transmit and/or receive wireless signals on one or more carrier frequencies, which may be referred to as a cell (not shown). In an embodiment, the base station 114a may employ multiple-input multiple-output (MIMO) technology and may utilize multiple transceivers for each sector of the cell.

For example, the base station 114a in the RAN <NUM> and the WTRUs 102a, 102b, 102c may implement a radio technology such as Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (UTRA), which may establish the air interface <NUM> using wideband CDMA (W-CDMA). W-CDMA may include communication protocols such as High-Speed Packet Access (HSPA) and/or Evolved HSPA (HSPA+).

Thus, the air interface utilized by WTRUs 102a, 102b, 102c may be characterized by multiple types of radio access technologies and/or communications sent to/from multiple types of base stations (e.g., an eNB and a gNB).

In other embodiments, the base station 114a and the WTRUs 102a, 102b, 102c may implement radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) <NUM> (i.e., Wireless Fidelity (WiFi), IEEE <NUM> (i.e., Worldwide Interoperability for Microwave Access (WiMAX)), cdma2000, cdma2000 1X, cdma2000 EV-DO, Interim Standard <NUM> (IS-<NUM>), Interim Standard <NUM> (IS-<NUM>), Interim Standard <NUM> (IS-<NUM>), Global System for Mobile communications (GSM), Enhanced Data rates for GSM Evolution (EDGE), GSM EDGE (GERAN), and the like.

In yet another embodiment, the base station 114b and the WTRUs 102c, 102d may utilize a cellular-based RAT (e.g., W-CDMA, cdma2000, GSM, LTE, LTE-A, LTE-A Pro, NR etc.) to establish a picocell or femtocell.

The other networks <NUM> may include wired and/or wireless communication networks owned and/or operated by other service providers. For example, the other networks <NUM> may include another CN connected to one or more RANs, which may employ the same RAT as the RAN <NUM> or a different RAT.

The processor <NUM> may be a general purpose processor, a special purpose processor, a conventional processor, a digital signal processor (DSP), a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Array (FPGA) circuits, any other type of integrated circuit (IC), a state machine, and the like.

The sensors may be one or more of a gyroscope, an accelerometer, a hall effect sensor, a magnetometer, an orientation sensor, a proximity sensor, a temperature sensor, a time sensor; a geolocation sensor; an altimeter, a light sensor, a touch sensor, a magnetometer, a barometer, a gesture sensor, a biometric sensor, a humidity sensor, or the like.

The WTRU <NUM> may include a full duplex radio for which transmission and reception of some or all of the signals (e.g., associated with particular subframes for both the UL (e.g., for transmission) and DL (e.g., for reception) may be concurrent, simultaneous, or the like. In an embodiment, the WTRU <NUM> may include a half-duplex radio for which transmission and reception of some or all of the signals (e.g., associated with particular subframes for either the UL (e.g., for transmission) or the DL (e.g., for reception)).

The MME <NUM> may provide a control plane function for switching between the RAN <NUM> and other RANs (not shown) that employ other radio technologies, such as GSM and/or W-CDMA.

11e DLS or an <NUM>. The IBSS mode of communication may also be referred to as an "ad-hoc" mode of communication.

The primary channel may be a fixed width (e.g., <NUM> wide bandwidth) or a dynamically set width set via signaling. In certain representative embodiments, Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) may be implemented, for example in <NUM> systems.

Inverse Fast Fourier Transform (IFFT) processing, or time domain processing, may be done on each stream separately.

Sub <NUM> gigahertz (GHz) modes of operation are supported by <NUM>. 11af and <NUM>. 11af and <NUM>. 11n, and <NUM>. 11ah may support Meter Type Control/Machine-Type Communication (MTC), such as MTC devices in a macro coverage area.

11n, <NUM>. 11ac, <NUM>. 11af, and <NUM>. If the primary channel is busy, due to a STA, such as a <NUM> operating mode STA, transmitting to the AP, whole frequency bands may be considered busy even though a majority of frequency bands remain idle and may be available.

Also, in an example, gNBs 180a, 180b, 180c may utilize beamforming to transmit signals to and/or receive signals from the WTRUs 102a, 102b, 102c. For example, the gNB 180a may transmit multiple CCs (not shown) to the WTRU 102a. A subset of these CCs may be on unlicensed spectrum while the remaining CCs may be on licensed spectrum. For example, WTRU 102a may receive coordinated communications from gNB 180a and gNB 180b (and/or gNB 180c).

The WTRUs 102a, 102b, 102c may communicate with gNBs 180a, 180b, 180c using communications associated with a scalable numerology. For example, the OFDM symbol spacing and/or OFDM subcarrier spacing (SCS) may vary for different communications, different cells, and/or different portions of the wireless communication spectrum.

The CN <NUM> shown in <FIG> may include at least one AMF 182a, 182b, at least one UPF 184a, 184b, at least one Session Management Function (SMF) 183a, 183b, and possibly a Data Network (DN) 185a, 185b. While each of the foregoing elements is depicted as part of the CN <NUM>, it will be appreciated that any of these elements may be owned and/or operated by an entity other than the CN operator.

For example, the AMF 182a, 182b may be responsible for authenticating users of the WTRUs 102a, 102b, 102c, support for network slicing (e.g., handling of different protocol data unit (PDU) sessions with different requirements), selecting a particular SMF 183a, 183b, management of the registration area, termination of non-access stratum (NAS) signaling, mobility management, and the like. For example, different network slices may be established for different use cases such as services relying on ultra-reliable low latency communication (URLLC) access, services relying on enhanced massive mobile broadband (eMBB) access, services for MTC access, and/or the like. The AMF 182a, 182b may provide a control plane function for switching between the RAN <NUM> and other RANs (not shown) that employ other radio technologies, such as LTE, LTE-A, LTE-A Pro, and/or non-third generation partnership project (3GPP) access technologies such as WiFi.

The SMF 183a, 183b may perform other functions, such as managing and allocating WTRU IP address, managing PDU sessions, controlling policy enforcement and QoS, providing DL data notifications, and the like.

The emulation device may be directly coupled to another device for purposes of testing and/or may perform testing using over-the-air wireless communications.

Licensed assisted access (LAA), enhanced LAA (eLAA), or the like is a mode of operation for wireless, cellular, or network providers to integrate unlicensed spectrum into wireless networks utilizing LTE, LTE-A, <NUM>, <NUM>, <NUM>, <NUM>, or the like. While LAA may be downlink-only, eLAA is capable of uplink and downlink operation in unlicensed or license exempt bands. LAA may utilize listen before talk (LBT) protocol in various categories. A category <NUM> may operate without LBT. A category <NUM> may operate using LBT without random back-off such that the duration of time that the channel is sensed to be idle before the transmitting entity transmits may be deterministic.

A category <NUM> may operate using LBT with random back-off with a contention window of fixed size that may draw a random number N within a contention window. A random number N may be used in LBT to determine the duration of time that the channel is sensed to be idle before transmitting on a channel. A channel may be a logical, transport, physical, or the like channel. The size of the contention window may also be a minimum value of N, a maximum value of N, fixed, or the like.

A category <NUM> may correspond to LBT with random back-off with a contention window of variable size that may draw a random number N within a contention window. The size of a contention window may be specified by a minimum value of N, a maximum value of N, or the like. A size of the contention window may also vary when drawing random number N.

A device may perform random back-off with different channel access priority classes and corresponding parameters. For example, Table <NUM> shows parameters for channel access priority class p. The defer duration Td may be a duration Tf = <NUM>us immediately followed by mp substantially consecutive slot durations. A slot duration may be Tsl = <NUM>us. CWmin,p and CWmax,p may be minimum and maximum sizes of a contention window. A network device, eNB, or the like may refrain from continuously transmitting on a carrier on which LAA Scell(s) transmission(s) are performed for a period exceeding Tmcot,p, or any other parameter.

Interlace transmission or resource allocation may be utilized in LAA. A basic unit of resource allocation for unlicensed data channels may be an interlace that includes a number of substantially equally spaced resource blocks within a frequency bandwidth. For instance, the number may be <NUM>. An interlace structure in frequency may be needed due to regulations in an unlicensed band to allow WTRUs to utilize maximum available transmit power. An interlace, for example, may comprise <NUM> subcarriers of an OFDM symbol and the subcarriers may be distributed in a clustered manner where each cluster size is <NUM> and the clusters are apart from each other by <NUM>×<NUM> subcarriers. In addition, for certain LAA or eLAA configurations an interlace resource allocation may be utilized for data channels only, a control channel may be transmitted using a licensed band, a control channel may be transmitted using a physical uplink control channel (PUCCH) in a licensed band, or the like.

MulteFire is a technology that may be configured to operate in the unlicensed band. Wi-Fi, <NUM>. 11x, or any other LAN technology may utilize MulteFire. MulteFire may operate similar to LAA or eLAA and use LBT protocol. <FIG> is a diagram of interlacing <NUM> that may be configured for MulteFire or LTE for different channels, different PUCCHs, different PUCCH formats, or the like. Interlacing <NUM> may comprise Interlace <NUM> and Interlace <NUM> for resource blocks (RBs) or physical RBs (PRBs) <NUM>-<NUM>. In MulteFire, short PUCCH (sPUCCH) for format <NUM> may send scheduling requests by using a cyclically-padded Zadoff-Chu sequence. This configuration may undesirably have high PAPR, arbitrary complex numbers with unit amplitude, or the like.

NR numerology on unlicensed spectrum may be based on frequency such as <NUM>, <NUM>, <NUM>, or the like. Configurations where NR-LAA is anchored to a legacy LTE carrier by DC and CA based aggregation with a <NUM> NR anchor may be utilized by standalone and non-standalone NR.

In NR, sPUCCH <NUM>, <NUM>, or <NUM> bits may be transmitted by mapping a specific sequence to one RB, PRB, or the like in the frequency domain. Each sequence may be of length-<NUM> and include quadrature phase shift keying (QPSK) symbols. Although certain examples herein may refer to QPSK, any modulation scheme may be configured or utilized for given embodiments. WTRUs in a cell transmitting on the same RB, PRB, or the like using the same base sequence may apply different cyclic shifts to the base sequence. WTRUs in neighboring cells may use different base sequences to minimize inter-cell interference.

A base sequence may be given by <MAT>, where φ(n) is given in Table <NUM>, where u is the sequence index, such as from <NUM> to <NUM>, and n = <NUM>,. Although any number of base sequences may be configured as desired for the examples given herein, Table <NUM> is one of many configurations with <NUM> base sequences.

Aperiodic Auto Correlation (APAC) may be derived by ρa(k) for k ∈ [-N + <NUM>, N - <NUM>] being the aperiodic autocorrelation of a complex sequence a = {a<NUM>, a<NUM>, ··· , aN-<NUM>} and ρa(k) given by <MAT> where <MAT> and <MAT> where (˙)* is the conjugate of its argument and <MAT>.

Periodic Auto Correlation (PAC) may be determined by ra(k) being the periodic autocorrelation of the sequence a = {a<NUM>, a<NUM>, ···, aN-<NUM>} and ra(k) being explicitly given by <MAT> where (i)N is the modulo of i.

A Golay modulator may apply a non-coherent, coherent, concatenation based, or an overlapping based technique to generate a Golay sequence. In certain configurations, a Golay modulator may be realized using a channel code. Also, UCI bits are mapped to a set of interleaved subcarriers. Golay complementary sequences may be determined such that the pair of (a, b) is called a Golay complementary pair (or sequences) if <MAT>.

Golay complementary pairs and sequences may be used for peak-to-average power mitigation or minimization, estimation of in-phase/quadrature (IQ) imbalance parameters, or channel estimation due to desirable properties. Golay complementary sequence construction for larger lengths may be determined such that the length N = <NUM>M of Golay complementary pairs may be constructed by a recursive procedure: <MAT> <MAT> where <MAT>, δk is the Kronecker's delta, and wm is the mth element of rotation vector w = [w<NUM> w<NUM> ··· wM], where |wm| = <NUM>, dm is the mth element of the delay vector d = [d<NUM> d<NUM> ··· dM] and the permutation of [<NUM><NUM> ··· <NUM>M].

Pairs of Golay complementary sequences may be configured as(Ga<NUM>, Gb<NUM>), (Ga<NUM>, Gb<NUM>), and (Ga<NUM>, Gb<NUM>). The parameters of these pairs may be listed as follows: <MAT> and <MAT> and <MAT> where flip{·} reverses the order of its argument. In addition to a short training field (STF) and channel estimation field (CEF) in <NUM>. 11xx, Golay sequences may be used in a single carrier physical (PHY) and low power SC PHY for a guard interval (GI), in a beamforming training (TRN) field, or the like. Furthermore, Golay complementary sequences with the alphabet of {<NUM>, -<NUM>} may exist for all lengths N = <NUM>n<NUM>m<NUM>k for non-negative integers n, m and k.

A Time-Domain Power Signal as a function of APAC may be a sequence with a polynomial as <MAT> where the sequence a = [a<NUM>, a<NUM>. , aN-<NUM>]. PAPR may be measured if z = ej2πt, xa(z) is equivalent to an OFDM signal in time, or Fourier transform of a, z = ej2πt, the instantaneous power can be calculated as |xa(z)|<NUM> = xa(z)xa*(z-<NUM>) as xa*(z-<NUM>) = xa*(z), or instantaneous power is known.

When |xa(z)|<NUM> = xa(z)xa*(z-<NUM>) is related to APAC of the sequence, it may be expressed as follows: <MAT>.

A sequence may have ideal APAC properties when |xa(ej2πt)|<NUM> = ρa(<NUM>) (i.e., a constant) is true. An ideal sequence may include the property of being unimodal in every point in time. With Eq. <NUM>, the PAPR of a sequence may be bounded as: <MAT> where E[·] is the integration operation for t from <NUM> to 2π.

PAPR may be measured by an integrated sidelobe level (ISL) and merit factor (MF) of a sequence determined by <MAT> and <MAT> respectively.

The PAPR of a sequence of a complementary pair of sequences may be less a certain level or threshold. Since Golay pairs a and b may satisfy ρa(k) + ρb(k) = <NUM>, k ≠ <NUM>, the following may be true <MAT> Correspondingly, the PAPR of a Golay sequence may be bounded as <MAT>.

In certain configurations, a Unified Property, such as Property <NUM>, to generate Golay complementary pairs may be defined by letting a and b be Golay pairs of length N and c and d be Golay pairs of length M. Then, the following e and f sequence are Golay pairs of length k(N - <NUM>) + ℓ(M - <NUM>) + m + <NUM>: <MAT> <MAT> where k, ℓ, m are integer numbers, w<NUM> and w<NUM> may be arbitrary or random complex numbers with unit amplitude, and xa(zk) is the upsampled sequence a with the factor of k, xa(zk)xb(zℓ) being the convolution of upsampled sequence a with the factor of k and upsampled sequence a with the factor of <NUM>. Furthermore, xa(z)zm may represent padded sequence a with m null symbols.

A sPUCCH is transmitted over an unlicensed carrier, such as in NR standalone operation. Like NR licensed sPUCCH, some sequences may be transmitted to represent an acknowledgement (ACK), negative ACK (NACK), scheduling request (SR), reference signal (RS), or the like messages. When sPUCCH symbols are transmitted within a short period, high power transmission may be needed to increase symbol energy. Accordingly, sequences for sPUCCH in an unlicensed band may have low PAPR. However, constructing sequences with low PAPR for unlicensed bands may be difficult due to interlace structures as given in <NUM>.

<FIG> is a chart <NUM> of a PAPR distribution for sPUCCH Format <NUM> in MulteFire. In MulteFire, sPUCCH for Format <NUM> SRs may utilize a cyclically-padded Zadoff-Chu sequence having undesirable PAPR properties. Additionally, this configuration may result in complexity at a receiver or transceiver due to multi or polyphases properties, such that elements of the sequence may be arbitrary or random complex numbers with unit amplitude.

A sPUCCH configuration to control the PAPR of the sequence-based sPUCCH of interlaced waveforms in the unlicensed band and decrease receiver complexity by limiting a sequence alphabet constellation may be configured or utilized. Golay sequence based interlaces may be utilized, such as for sPUCCH X bit transmissions. In certain configurations, X may be <NUM>-<NUM> bits. The inverse discrete Fourier transform (IDFT) of one of the sequences of one of a quinary Golay complementary pair may be transmitted to signal control information, ACK, NACK, SR, RS(s), or the like in the frequency domain. The cluster size of an interlace for sPUCCH may be Nrb subcarriers, the interlace may have Ncluster, and the cluster may be separated by (k - <NUM>)Nrb subcarriers, where k is a non-negative integer.

The transmitted quinary sequence in a Golay complementary pair of length of kNrbNcluster may follow an interlace structure. For example, the elements of the sequence carried over the subcarriers may belong to the clusters that are in the constellation of QPSK, or there are Nrb × Ncluster symbols which are in a QPSK constellation, and the elements of the sequence that are not carried over the subcarriers belong to the clusters, or there are (k - <NUM>)Nrb × Ncluster null symbols. In this configuration, the PAPR of the corresponding quinary Golay sequence may be less than a predetermined target that is difficult to maintain. For instance, a target of ~<NUM> dB PAPR may be a stringent target for multiple cluster configurations but desirable since it may improve the coverage or range in the uplink and save power.

<FIG> is a transmitter or a transceiver block diagram <NUM> for interlace based on a quinary Golay sequence <NUM> for control or PUCCH communications. An IDFT operation <NUM> may be performed on the <NUM>st cluster to <MAT> with the output shifted by cyclic shift unit <NUM> of information input or signal <NUM>. A quinary sequence used in a PUCCH interlace may be based on various operations. For instance, interlaces in a sPUCCH may utilize a unified property to generate Golay complementary pairs, varying phase shifts to achieve different constellations, or the like.

<FIG> is a diagram <NUM> showing examples for sPUCCH interlaces. For non-coherent detection, a Golay pair (c, d) of length Nrb, where the elements of the sequences may be in a QPSK constellation, may be obtained followed by calculating padding c, d with (k - <NUM>)Nrb null symbols and assignment to c', d'. A Golay pair (a, b) of length Ncluster/<NUM> may be obtained followed by obtaining a quinary Golay such that: <MAT> <MAT> where k' = kNrb, ℓ = <NUM>, m = kNrbNcluster/<NUM>, ã is the reverse of a, and a* is the conjugate of a. Furthermore, <MAT> and <MAT> where a|b denotes the concatenation of the sequence a and the sequence b and ⊗ is a Kronecker product as illustrated in diagram <NUM>. An interlace may utilize either e or f or a combination in frequency. In a configuration with NRB = <NUM>, Ncluster = <NUM>, and k = <NUM>, sequences a, b, c, and d may be obtained as follows: a = [<NUM><NUM><NUM> -i i]; b = [<NUM> i -<NUM><NUM> -i]; c = [<NUM><NUM><NUM><NUM> -<NUM> -<NUM> -<NUM><NUM> i -i -<NUM><NUM>]; d = [<NUM><NUM> i i <NUM><NUM> -<NUM><NUM><NUM> -<NUM><NUM> -<NUM>]; where <MAT>. When a and b are a Golay complementary pair as (a, b), then, (a, b̃*), (ã*, b̃*), (ã*, b), (b, a) may also be Golay complementary pairs. Hence, if many sequences are desired, different combinations of a, b may be generated to generate different quinary Golay complementary pairs. In another configuration, sequences a, b may be fixed and c, d may be changed based on a table, permutated based on various properties, or the like.

Referring now to <FIG>, an example of a transmitter or a transceiver <NUM> using clusters that may be configured to use Golay complementary pairs to keep PAPR of a corresponding signal or waveform in time less than <NUM> dB to transmit control information, ACK, NACK, SR, RSs, or the like is given. A Set A of sequences <NUM> and Set B of sequences <NUM> may be utilized based on sequence index u. As an example, Set A = {gAu; u = <NUM>,. , <NUM>} and Set B = {gBu; u = <NUM>,. , <NUM>} may be Golay complementary pairs and the number of sequences in each set may be <NUM>. The cross correlation of the sequences in Set A and Set B may be low. For instance, the maximum normalized peak cross-correlation may be less than <NUM>. The sequences in Set A and Set B may be generated through Table 3A and Table 3B, respectively, by calculating gAu(n) = <MAT> and <MAT>, where φuA(n) and φuB(n) are given in Table 3A and Table 3B, respectively.

As an example, Set A and Set B may comprise of sequences generated through any <NUM> rows of Table 3A and Table 3B, as long as the same rows in Table 3A and Table 3B, are selected (e.g., the first <NUM> rows in Table 3A and Table 3B may be selected). Each row in Table 3A and Table 3B, may lead to a Golay pair when they are converted to sequences via gAu(n) = <MAT> and <MAT>, and each element of the sequences is a QPSK symbol. Additional phase shift may also be applied to the sequences. Based on the indicated sequence index u, the WTRU may obtain the sequences from Set A and Set B, for instance <MAT> and <MAT>, where gAu and gBu may be a Golay complementary pair. Based on an indication, a set of zero symbols may be padded to gAu and gBu, by zero-padding component <NUM> resulting <MAT> and <MAT>, respectively. The number of zero symbols may be a function of the bandwidth parts, subcarrier spacing, operation bandwidth, or the like and may determine the gap between the clusters in frequency. The WTRU may determine another two spreading sequences at spreading component <NUM>, for instance <MAT> and <MAT>, for gAu and gBu, respectively, and sA and sB may be a Golay complementary pair. Ls may depend on the operating bandwidth, numerology, or the like.

Exemplary values of sA and sB are given in Table <NUM>. In Table <NUM>, the values of A, B, or C may imply the parameters of a clustered structure or an interlace in the frequency domain. For example, the input of IDFT may be portioned into B clusters of size of A × <NUM>, and the cluster may be separated by C × <NUM> tones in the frequency domain. In addition, in certain configurations sA and sB for <NUM> configurations may be derived from sA and sB for <NUM> configurations, by using one of the Golay construction methods in Property <NUM>. For example, sA for <NUM> may be based on sA and sB for <NUM> and sB for <NUM> may be based on sA and -sB for <NUM>. In <NUM>, the padded sequences, for instance pAu and pBu, may be spread with sA and sB as sA⊗pAu ∈ <MAT> and <MAT>. To increase multiplexing capacity, spread sequences may also be multiplied with unit-norm complex coefficients, for instance w<NUM> and w<NUM>, and the resulting sequences may be mapped to the input of IDFT transformation component <NUM>. To signal control information, ACK, NACK, SR, RS(s), or the like the output of IDFT may be circularly shifted by cyclic shift component <NUM>. After cyclic prefix addition by CP+ component <NUM>, the generated signal may be transmitted.

Coherent detection may be configured such that the quinary Golay-based sequence has two interleaved sub-quinary Golay-based sequences. For this configuration, a reference sequence and modulated sequence with a QPSK symbol may be derived by obtaining a Golay pair (c, d) of length Nrb/<NUM>. Also in this configuration, c' = upsample{c, <NUM>} and d' = circshift(upsample{d, <NUM> may be allocated and c', d' padded with (k - <NUM>)Nrb null symbols to be designated as c", d". Furthermore, a Golay pair (a, b) of length Ncluster may be obtained and a quinary Golay pair obtained with: <MAT> <MAT> where k' = kNrb, ℓ = <NUM>, m = <NUM>, w<NUM> and w<NUM> are unit norm scalars. In addition, <MAT> and <MAT> where the interlace may use either e or f or a combination in frequency.

In certain configurations, w<NUM> or w<NUM> may be a QPSK symbol that carries a SR, ACK, NACK, SR, RS, or the like information. In a different configuration, w<NUM> or w<NUM> may be a fixed symbol utilized for coherent detection at a receiver, transceiver, or the like. In certain configurations, users may be separated by applying a cyclic shift to the output of an IDFT.

<FIG> is a transmitter or a transceiver block diagram <NUM> for interlace based on a quinary Golay-based sequence. Input <NUM> may be an ACK, NACK, SR, RS, or the like utilized to generate a quinary Golay-based sequence. An IDFT operation <NUM> may be performed on the <NUM>st cluster to <MAT> of the sequence(s) with the output shifted by cyclic shift unit <NUM> using information, such as a WTRU index, <NUM>. Since w<NUM> or w<NUM> may be a QPSK symbol or fixed symbol, <NUM> may be a configuration to multiplex reference symbols and data symbols such that every other symbol in frequency may be fixed and function as pilots.

<FIG> is a diagram <NUM> showing another example of sPUCCH interlace. In diagram <NUM>, w<NUM> may be a QPSK symbol and w<NUM> a reference signal or symbol. For the structure of e, when NRB = <NUM>, Ncluster = <NUM>, and k = <NUM>, sequences a, b, c, and d may be obtained such that:
a = [<NUM><NUM><NUM><NUM><NUM> -<NUM><NUM> -<NUM> -<NUM><NUM>]; b = [<NUM><NUM> -<NUM> -<NUM><NUM><NUM><NUM> -<NUM><NUM> -<NUM>]; c = [<NUM><NUM><NUM>1i -<NUM><NUM>]; and d = [<NUM><NUM> -1i -<NUM><NUM> -<NUM>]. In diagram <NUM>, although interleaved subcarriers are multiplied with a QPSK symbol, PAPR may be substantially low as the sequence may be one of the sequences in a quinary Golay pair.

Two or more OFDM symbols may be generated with coherent detection and w<NUM> or w<NUM> for the corresponding OFDM symbols may be a reference symbol such as a QPSK symbol. An additional phase shift may be applied to interlaces to achieve different QPSK constellations. In addition, multiple interlace assignments for sPUCCH may be configured. A BS may assign multiple interlaces to WTRUs and this may be indicated through configuration, such as radio resource control (RRC) messaging. The interlaces may be generated through corresponding Golay complementary pairs, such as sequence e and f, to maintain low PAPR. While one interlace may indicate first information, such as control information, ACK, NACK, SR, or the like, the other interlace may indicate second information.

<FIG> is a transmitter or a transceiver block diagram <NUM> with a Golay modulator (GM) for quadrature phase shift keying (QPSK). Golay-sequence based interlaces for sPUCCH with more than <NUM> bits may be configured. UCI bits may be inputted to an encoder <NUM> and modulated at modulation component <NUM>. A set of QPSK symbols, which may be a fragment of coded and QPSK modulated sequences after processing by fragmentation component <NUM>, may be processed by GM <NUM> before IDFT operation by IDFT component <NUM>. A GM may be a component taking an input of modulation symbols, such as NQPSK QPSK symbols, and output one of many sequences, such as a sequence of length NS, in a Golay complementary pair. Output of IDFT component <NUM> may be processed by radio frequency (RF) component <NUM>.

As an example, in a GM1, concatenation and Property <NUM> may be configured, by setting a, b = [<NUM>]. Correspondingly, a recursive method to generate Golay pair (c(n+<NUM>), d(n+<NUM>)) of length of M2n at nth iteration may be developed as <MAT> <MAT> where M is the length of c(<NUM>) and d(<NUM>) and |wi|<NUM> = <NUM>. This may imply that <MAT> <MAT> where x|y denotes the concatenation of the sequence x and the sequence y.

<FIG> is a diagram <NUM> of the sequence c(n+<NUM>) structure in GM1 for n = <NUM>, <NUM>, <NUM>. In <FIG>, the structure of the sequence c(n+<NUM>) in GM1 and corresponding coefficients at nth iteration are shown. Arrows may represent subsequences c(<NUM>) and d(<NUM>). For the nth iteration, the coefficient that multiplies c(<NUM>) or d(<NUM>) may be a function of n variables. For example, for c(<NUM>), the coefficient for the first subsequence may be w<NUM>w<NUM>w<NUM>, or a factor of three variables, and it multiplies c(<NUM>). The coefficient for the fourth subsequence may be -w<NUM>w<NUM>w<NUM>, or a factor of three variables and it multiplies d(<NUM>). Coefficients at the nth iteration may have unit amplitude as |wi|<NUM> = <NUM>.

In certain configurations, GM may be a component that sets coefficients of the subsequences of c(n+<NUM>) (i.e., c(<NUM>) and d(<NUM>)) based on procedures given herein to QPSK symbols and related parity or redundant symbols derived based on the QPSK symbols to return c(n+<NUM>) as the output of GM.

<FIG> is a transmitter or transceiver block diagram <NUM> for utilizing <NUM> QPSK symbols (n = <NUM>) by GM <NUM> and IDFT <NUM>. <FIG> is a transmitter or transceiver block diagram <NUM> for utilizing <NUM> QPSK symbols (n = <NUM>) by GM <NUM> and IDFT <NUM>. <FIG> is a transmitter or transceiver block diagram <NUM> for utilizing <NUM> QPSK symbols (n = <NUM>) by GM <NUM> and IDFT <NUM>. In <FIG>, GM1 for n = <NUM>,<NUM>,<NUM> may be configured. In these block diagrams, qi may be the ith QPSK symbol and pi the ith parity symbol. For n = <NUM>, w<NUM> and w<NUM> may be set to q<NUM> and q<NUM>, respectively. This configuration may not require parity symbols as w<NUM> and w<NUM> may be chosen independently. For n = <NUM>, GM1 may be capable of utilizing <NUM> QPSK symbols, and w<NUM>w<NUM>, w<NUM>w<NUM>, and w<NUM>w<NUM> may be set to q<NUM>, q<NUM>, and q<NUM>, respectively. The corresponding parity symbol may be determined as <MAT>. For n = <NUM>, GM1 may utilize <NUM> QPSK symbols, and w<NUM>w<NUM>w<NUM>, w<NUM>w<NUM>w<NUM>, w<NUM>w<NUM>w<NUM>, and w<NUM>w<NUM>w<NUM> may be set to q<NUM>, q<NUM>, q<NUM>, and q<NUM>, respectively. Corresponding parity symbols may be calculated as <MAT>, p<NUM> = <MAT>, and <MAT>.

In certain configurations, parity symbols and QPSK symbols may be different. For example, w<NUM>w<NUM>w<NUM> may be set to q<NUM> instead of w<NUM>w<NUM>w<NUM> for n = <NUM> and corresponding parity symbols may be derived correspondingly. In certain configurations, (n + <NUM>) QPSK symbols may be supported for GM1 with the output of c(n). Some of the QPSK symbols may be fixed to reduce complexity or to serve as reference symbols in frequency for channel estimation at a receiver.

A numerical example for GM1 for n = <NUM> is given as below:.

For GM1, any one of steps <NUM>-<NUM> may be skipped or additional steps performed, as desired.

A Golay modulator may also be realized by using a channel code, such as Reed-Muller, Walsh, or the like, and constraining the channel code such that it includes the N - <NUM> monomials with the order of <NUM> where N may be the total number of monomial with the order of <NUM>. For example, the generator matrix G for a Reed-Muller code of length of <NUM> with the order of <NUM> for the alphabet of <MAT> (i.e., [<NUM><NUM><NUM><NUM>], where each element represents the QPSK symbols of [<NUM>, j, -<NUM>, -j], respectively) may be: <MAT>.

In the above matrix, the last three rows may correspond to monomials with the order of <NUM>, such as x<NUM>x<NUM>, x<NUM>x<NUM>, and x<NUM>x<NUM>, i.e., (N = <NUM>). If the message is b = [m<NUM> m<NUM> m<NUM> m<NUM> <NUM><NUM><NUM>] where <MAT>, the operation, e = mod(bG, <NUM>) may lead to be mapped to QPSK symbols. After mapping to the QPSK symbols, such as f, the vector f may lead to vector [q<NUM> q<NUM> q<NUM> p<NUM> q<NUM> p<NUM> p<NUM> p<NUM>] in <FIG>.

<FIG> is a diagram of a Golay modulator using Reed-Muller <NUM> where UCI information is processed by Reed-Muller component <NUM>, modulated by modulation component <NUM>, IDFT operated by IDFT component <NUM>, and processed by RF component <NUM>. Each element of [q<NUM> q<NUM> q<NUM> p<NUM> q<NUM> p<NUM> p<NUM> p<NUM>] may modulate the Golay sequence, i.e. Golay A and Golay B, as in <FIG>. In certain configurations, zeros may be added between modulated Golay A and Golay B sequences to generate interlaces.

An error correction encoder may utilize a polar code where frozen bits or messages may be chosen such that the resulting codeword yields a low PAPR signal or waveform. For example, a generator matrix may be given by <MAT> where <MAT> for a polar code is given. In a polar coding configuration, rows <NUM>-<NUM> may be frozen by multiplying with zeros. In accordance with another configuration, 2nd and 3rd rows may be multiplied by <NUM> for QPSK or <NUM> for BPSK. This may be similar to the operation in Reed-Muller in <FIG>. Hence, by only changing the frozen bits, PAPR may be reduced. A message, such as vector b, may be encoded as e = mod(bG, <NUM>) leading to values to be mapped to QPSK symbols. Each element of e = [q<NUM> q<NUM> q<NUM> p<NUM> q<NUM> p<NUM> p<NUM> p<NUM>] may modulate a Golay sequence, i.e. Golay A and Golay B, as in <FIG>. Similar to above, in a configuration, zeros may be added between modulated Golay A and Golay B sequences to generate interlaces.

<FIG> is an example of a table for generating QPSK symbols for a Golay modulator with a polar encoder <NUM>. For a GM2 a recursive method may be utilized to generate Golay pair (c(n+<NUM>), d(n+<NUM>)) of length of 2N(M + Nz)<NUM>n at an nth iteration as follows:.

<FIG> is a diagram <NUM> of the sequence c(n+<NUM>) structure in GM2 for n = <NUM>, <NUM>, <NUM> when N = <NUM>. The group of arrows marked may represent s<NUM> = a⊗c', s<NUM> = b⊗d', s<NUM> = b̃*⊗c', and s<NUM> = ã*⊗d', respectively. A GM may be a component that sets the coefficients of the subsequences of c(n+<NUM>) (i.e., s<NUM>, s<NUM>, s<NUM>, and s<NUM>) based on procedures given herein to QPSK symbols and related parity or redundant symbols derived based on the QPSK symbols to return c(n+<NUM>) as the output of a GM operation.

<FIG> is a transmitter or transceiver block diagram <NUM> for utilizing <NUM> QPSK symbols (n = <NUM>) by GM <NUM> and IDFT <NUM>. <FIG> is a transmitter or transceiver block diagram <NUM> for utilizing <NUM> QPSK symbols (n = <NUM>) by GM <NUM> and IDFT <NUM>. <FIG> is a transmitter or transceiver block diagram <NUM> for utilizing <NUM> QPSK symbols (n = <NUM>, <MAT>, p<NUM> = <MAT>, and <MAT>) by GM <NUM> and IDFT <NUM>. In <FIG>, <FIG>, and <FIG>, examples with GM1 for n = <NUM>,<NUM>,<NUM> are given based on the example provided in <FIG>. In these block diagrams, qi may be the ith QPSK symbol and pi is the ith parity symbol. For n = <NUM>, w<NUM> and w<NUM> may be set to q<NUM> and q<NUM>, respectively. Without parity symbols, w<NUM> and w<NUM> may be chosen independently. For n = <NUM>, GM1 may support <NUM> QPSK symbols, where w<NUM>w<NUM>, w<NUM>w<NUM>, and w<NUM>w<NUM> may be set to q<NUM>, q<NUM>, and q<NUM>, respectively. A corresponding parity symbol may be calculated as <MAT>. For n = <NUM>, GM1 may support <NUM> QPSK symbols, where w<NUM>w<NUM>w<NUM>, w<NUM>w<NUM>w<NUM>, w<NUM>w<NUM>w<NUM>, and w<NUM>w<NUM>w<NUM> may be set to q<NUM>, q<NUM>, q<NUM>, and q<NUM>, respectively. Corresponding parity symbols may be calculated as <MAT>, <MAT>, and <MAT>.

The order of the parity symbols and QPSK symbols may be different than the examples in <FIG>, <FIG>, or <FIG>. For example, w<NUM>w<NUM>w<NUM> may be set to q<NUM> instead of w<NUM>w<NUM>w<NUM> for the case of n = <NUM> and parity symbols may be derived correspondingly. In certain configurations, (n + <NUM>) QPSK symbols may be supported for GM2 with the output of c(n). Some QPSK symbols may be fixed to reduce complexity or serve as reference symbols in frequency for channel estimation at a receiver or transceiver.

A procedure that generates an interlace for sPUCCH (NRB = <NUM>, Ncluster = <NUM>, k = <NUM>, Nz = <NUM>, M = <NUM>, N = <NUM>, β = <NUM> × <NUM>n) based on GM2 may be as follows:.

For GM2, any one of steps <NUM>-<NUM> may be skipped or additional steps performed, as desired.

Sequence c and d may be up-sampled by u before the procedure to generate the Golay pair (c(n+<NUM>), d(n+<NUM>)) with GM2 and the new β may be set to B/u. This may result in interleaved QPSK and parity symbols in frequency. By choosing q<NUM> and q<NUM> to be fixed symbols, it may be possible generate reference symbols for each cluster in interlace, e.g., <NUM> RS for a single RB, PRB, or the like. To generate one interlace for sPUCCH with NRB = <NUM>, Ncluster = <NUM>, k = <NUM>, Nz = <NUM>, M = <NUM>, N = <NUM>, and β = <NUM>n, based on GM2 the following may be performed:.

In this case for GM2, any one of steps <NUM>-<NUM> may be skipped or additional steps performed, as desired.

<FIG> is a chart <NUM> of a generated interlace by using GM2. As the origination sequences are QPSK-based Golay pairs and the GM2 settings do not overlap the QPSK symbols, the amplitude for each subcarrier in the interlace may be <NUM> in this configuration. Since GM2 may result in a quinary Golay sequence, in certain configurations the PAPR of the transmitted signal or waveform may be less than or equal to ~3dB or <NUM> log<NUM> <NUM>. In addition, QPSK symbols for GM2 may be fixed to generate a full RS for one interlace in a sPUCCH. As GM1 and GM2 include coding with parity symbols, in certain configurations UCI may transmitted without further coding.

A sequence carrying control information may be mapped to a set of interleaved subcarriers. A length-K sequence may be mapped to K subcarriers where each subcarrier may belong to a RB, PRB, or the like, and the RBs may be separated in frequency such that the separation, such as in terms of number of subcarriers, between consecutive RBs remains the same or constant.

<FIG> is a diagram <NUM> of an interleaved frequency division multiple access (IFDMA) based sPUCCH. A 1st subcarrier of each of the K RBs may be allocated to PUCCH resources for <NUM>st WTRU <NUM> while the 2nd subcarrier of each of the K RBs may be allocated to PUCCH resources for <NUM>nd WTRU <NUM>. In certain configurations, K may be set to <NUM> and a sequence may be selected from the set of the <NUM> length-<NUM> computer generated sequences.

The index of the subcarrier within the RBs may be signaled to the WTRU explicitly, may be configured, or may be signaled to the WTRU implicitly. The index of the subcarrier may be determined using an offset value. For example, offset = <NUM> may mean the first subcarrier, offset = <NUM> may mean the second subcarrier, etc. The offset value or subcarrier index may change in time, over a number of slots, over a number of subframes, or the like.

Referring again to Table <NUM>, sequences may be re-used for sPUCCH transmission with a Block Interleaved Frequency Division Multiple Access (B-IFDMA) waveform. In addition to sequences in Table <NUM>, any length-<NUM> or other lengths may be utilized. A resulting sequence may be mapped to resource blocks on an interlace using a B-IFDMA waveform.

A WTRU may be configured to select one base sequence and one cyclic shift to apply to the base sequence. The index of the base sequence and the cyclic shift amount may be signaled to the WTRU. The same resulting sequence, the base sequence after being cyclically shifted, may be mapped to available, allocated, all, etc., RBs on an interlace using the B-IFDMA waveform for repetition.

In accordance with another configuration, the same resulting sequence, the base sequence after being cyclically shifted, may be mapped to available, allocated, all, etc., RBs on an interlace using the B-IFDMA waveform. The sequence on each RB, PRB, or the like may be multiplied with a coefficient. According to a configuration, the coefficient may be chosen from the set {<NUM>, -<NUM>, j, -j} where <MAT> and put in a vector s of length of Ls. Based on the indicated sequence index u, the WTRU may determine ru of length L. After ru is zero padded based on an indicated value C which may be a function of subcarrier spacing and the operating bandwidth, such as <NUM>, <NUM>, and <NUM>, and it may be spread as s⊗[ru <NUM>]. The spread vector may be multiplied with a complex coefficient w<NUM> and the resulting vector may be mapped to the subcarriers in frequency.

<FIG> is a diagram showing a vector that may be circularly shifted to indicate control information, an ACK, NACK, SR, RS, or the like after an IDFT operation. In <NUM>, NR sequences <NUM> may be selected using an index, followed by a zero-padding component <NUM>, and spreading <NUM> using s.

After weighting, an IDFT operation may be performed by IDFT component <NUM> with the resulting vector circularly shifted by cyclic shift component <NUM> to indicate control information, an ACK, NACK, SR, RS, or the like. A cyclic prefix may be added by CP+ component <NUM>. The coefficients that multiply the sequence on each RB, i.e., the vector of s, may be chosen to meet a criterion or predetermined condition. For example, the criterion may be to reduce the PAPR or cubic metric (CM) of a signal or waveform.

<FIG> is a diagram <NUM> showing that a spreading sequence may be a function of the sequence index u, such as su. Sequences component <NUM> may utilize sequence index u and sequence B. to output su. Sequence B may be generated through an optimization process. For this configuration, su may be based on a given ru to minimize PAPR or a CM of the produced signal or waveform. The length of spreading sequences may be a function of bandwidth parts, subcarrier spacing, operating bandwidth, or the like. Referring again to the sequences in Table <NUM>, coefficients which minimizes PAPR and CM may be given by Table 5A and 5B. In certain configurations, a phase shift may be applied to spreading sequences without changes to the minimum PAPR value obtained in Table 5A. In addition, coefficients that multiply the sequence on each RB, PRB, or the like may be chosen such that a desired criterion or condition is met.

In another configuration, the same base sequence may be mapped to available, allocated, all, etc. RBs on an interlace using the B-IFDMA waveform. However, the cyclic shift applied to the sequences on different RBs is different. In the examples given herein, the cyclic shift applied is a function of a parameter signaled to the WTRU, namely a function of the RB index. The sequence on each RB may be multiplied with a coefficient. As an example, the coefficient may be chosen from the set {<NUM>, -<NUM>, j, -j} where <MAT>. In addition, coefficients that multiply the sequence on each RB may be chosen such that a desired criterion or condition is met.

In accordance with another configuration, one of the <NUM> base sequences may be mapped to one RB, PRB, or the like of an interlace after a cyclic shift. The base sequences mapped to the RBs of an interlace may be the same or different. An example is given in Table <NUM> where an interlace in B-IFDMA includes <NUM> RBs.

The base sequences mapped to the RBs of an interlace may be subject to the same cyclic shift. The sequence on each RB may be multiplied with a coefficient. For example, the coefficients may be chosen from the set {<NUM>, -<NUM>, j, -j} where <MAT>.

A sequence and RB/PRB combination, or which sequence is mapped to which RB, and the coefficient that multiplies each sequence may be searched with an algorithm so that a specific criterion may be met. For example, the search may find the sequence or RB combination and set of multipliers so that the resulting signal or waveform has low PAPR. The cyclic shift applied to the sequences on different RBs may be the same or different. The cyclic shift applied to a sequence may be a function of at least one of a parameter signaled to the WTRU, one or more parameters already known to the WTRU, a RB index, a base sequence index, a symbol number, a slot number, a subframe number, a frame number, or the like.

The sequence and RB/PRB combinations may be specified in a table with a variable number of rows, such as <NUM> rows. In certain configurations, a combination may be used in one cell. To minimize inter-cell interference, it is desirable to prevent the same sequence being used on the same RB in different cells. For this configuration, the columns of a table may have distinct sequence indices. For example, the sample <NUM>-row Table <NUM> may not meet this criterion because the same base sequences are mapped to RBs <NUM> and <NUM>. The sample <NUM>-row Table <NUM>, however, may meet this criterion. In a directional transmission with beamforming, the index of the sequence or the index of the set of coefficients applied for to a given sequence may be used to transmit the beam index.

A sPUCCH format with more than <NUM> bits using an OFDM waveform may be configured in NR. In this format, coded and QPSK modulated symbols may be mapped to a set of subcarriers over a group of consecutive RBs. One or more subcarriers in each RB may be allocated for reference symbols. This configuration may be extended to support user multiplexing when B-IFDMA resource allocation is used or where one interlace is composed of K RBs, such as K = <NUM>, distributed evenly over a channel bandwidth.

<FIG> is a diagram <NUM> showing user multiplexing within an interlace using spreading in a transmitter or transceiver. <FIG> is another diagram <NUM> showing user multiplexing within an interlace using spreading. In <NUM> or <NUM>, user multiplexing may utilize orthogonal spreading sequences and the spreading operation is illustrated for one or more RB(s) of an interlace. However, the spreading operation may also be applied on available, allocated, all, etc. RBs of an interlace similarly before mapping the subcarriers to the IDFT. When the same sequence is used for one or more RBs different orthogonal codes may be utilized.

In <NUM>, information may be modulated by QPSK modulator <NUM> and vector of information symbols [d1 d2 d3] may be mapped to consecutive inputs of IDFT component <NUM> after being scaled with a respective coefficient of spreading sequences w<NUM>. As opposed to <NUM>, in <NUM> a spreading sequence may be mapped <NUM> to consecutive IDFT inputs after being scaled with a coefficient of the data vector. In addition, <NUM> and <NUM> may be configured to allocate certain subcarriers to reference symbols while keeping the same spreading operation.

In <NUM> or <NUM>, user multiplexing may be configured by assigning partial interlace to a WTRU. As an example, the first <NUM> subcarriers of each RB, PRB, or the like in an interlace may be allocated to one WTRU while the last <NUM> subcarriers of each RB, PRB, or the like in an interlace may be allocated to another WTRU. A partial interlace may be configured to increase the number of orthogonal interlaces without overlapping resources or signals in the frequency domain.

Claim 1:
A method performed by a wireless transmit/receive unit, WTRU, (<NUM>), the method comprising:
receiving a downlink transmission; and
sending <NUM> bit of uplink control information, UCI, in each resource block, RB, of an interlace of a plurality of RBs of a physical uplink control channel, PUCCH, transmission over an unlicensed carrier,
wherein a base sequence representing the UCI is used for the PUCCH transmission and a resulting sequence comprising the same base sequence after being cyclically shifted is mapped to each RB of the interlace,
wherein the resulting sequence has a different cyclic shift of the base sequence in each RB of the interlace,
wherein the different cyclic shift of the base sequence used in each RB is a function of a RB index of the respective RB, and
wherein the UCI comprises information indicating either an acknowledgement, ACK, or a negative ACK, NACK, of the downlink transmission.