It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.

Systems and methods for calibrating a phase array antenna (“PAA”) are provided. The system includes a PAA having a plurality of array elements and a remote calibration terminal. The PAA is connected to a processor unit. The PAA includes a reference beamforming network (“BFN”) for generating a reference beam and a calibration BFN for generating a calibration beam. The PAA applies a plurality of scrambled orthogonal codes to the calibration BFN to generate the calibration beam. The remote calibration terminal is configured to analyze the reference beam and the calibration beam to determine a calibration error for the PAA, the calibration error including a phase error and an amplitude error for each of the plurality of array elements of the PAA. The remote calibration terminal may be configured to measure a beam pointing error (“BPE”) of the PAA and/or a coupling between array elements.

A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAC sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.

The present disclosure provides a terminal device that allows constraints on user allocation to be prevented and spread codes to be allocated in a scheduler when non-adaptive HARQ is employed using a PHICH. A codeword generator generates code words by encoding data, a layer mapping unit places each CW in one or a plurality of layers, a DMRS generator generates a reference signal for each layer in which a CW is placed by using any resource among a plurality of resources defined by a mutually orthogonal plurality of OCCs, and an ACK/NACK demodulator receives a response signal indicating a retransmission request. When a response signal requesting retransmission of only a CW placed in a plurality of layers is received, the DMRS generator uses each resource having the same OCC among the plurality of resources for the reference signals generated in the corresponding layers.

The present document relates to a method for transmitting a signal using a long sequence in a wireless communication system. According to the method, a transmission side device transmits a signal using the long sequence comprising a combination of a plurality of sub-subsequences, wherein each of the plurality of sub-subsequences comprises a combination of a plurality of short base sequences, each having a length equal to or shorter than a predetermined length, and sequences obtained by multiplying each of the base sequences by a cover sequence.

The present document relates to a method for transmitting a signal using a long sequence in a wireless communication system. According to the method, a transmission side device transmits a signal using the long sequence comprising a combination of a plurality of sub-subsequences, wherein each of the plurality of sub-subsequences comprises a combination of a plurality of short base sequences, each having a length equal to or shorter than a predetermined length, and sequences obtained by multiplying each of the base sequences by a cover sequence.

The present disclosure proposes schemes, techniques, designs and methods pertaining to transmission and reception of random access preambles to aid integration of terrestrial mobile network communication and non-terrestrial network (NTN) communication. The design of a proposed preamble is suitable for terrestrial mobile networks and for transmission scenarios with Doppler frequency shift and long propagation delay in NTN communications. The structure of the proposed preamble is used in random access of terrestrial and NTNs. The structure of the preamble can be modified based on the preamble design used for terrestrial network communication, so that it can be used in the random access of NTNs.

A device of a New Radio (NR) User Equipment (UE), a method and a machine readable medium to implement the method. The device includes a Radio Frequency (RF) interface, and processing circuitry coupled to the RF interface, the processing circuitry to: encode for transmission, to a User Equipment (UE), a Synchronization Signal Block (SSB) including a Physical Broadcast Channel (PBCH) and a channel estimation signal that is time division multiplexed with the PBCH, the channel estimation signal to allow the UE to estimate a channel for the PBCH and including one of a Secondary Synchronization Signal (SSS), a Demodulation Reference Signal (DMRS) or a Phase Tracking Reference Signal (PT-RS); and apply Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) to the PBCH prior to sending the SSB to the RF interface for transmission.

Devices, systems and methods for a fifth generation (5G) or new radio (NR) system comprising multiplexing, by a gNodeB (gNB), a physical broadcast channel (PBCH) and an associated demodulation reference signal (DMRS) in a time division multiplexing (TDM) manner; and transmitting, by the gNB, the PBCH by employing a Discrete Fourier Transform-spread-orthogonal frequency-division multiplexing (DFT-s-OFDM) waveform and its associated DMRS.

The present disclosure relates to a method for a terminal device to determine demodulation reference signal (DMRS), comprising: obtaining (211) a DMRS configuration and a corresponding signature assigned by a network side node; constructing (212) a DMRS according to the DMRS configuration; mapping (213) the DMRS to a physical channel assigned to the terminal device. The signature indicates a processing configuration for the physical channel. In the embodiments of the present disclosure, the signature, and DMRS configuration may be configured correspondingly, to obtain low-crosstalk DMRS signals for different terminal devices, thus, the number of the supported terminal devices may be improved.