One disclosure of this specification provides a method for receiving a synchronization signal block (SSB) by a user equipment (UE). The method may include: determining frequency locations of multiple SSBs; and receiving at least one SSB among the multiple SSBs. The multiple SSBs may be configured to be arranged spaced apart from each other by a predetermined offset. The at least one SSB may be located at an interval of 1.2 MHz on a frequency axis.

Provided are a method and a device for selecting a channel of an unlicensed band in configuring carrier aggregation for a terminal using an unlicensed band cell which uses an unlicensed frequency band. The method may include: receiving, from a base station, channel candidate information of a secondary cell using an unlicensed frequency band; transmitting channel state information with respect to one or more channels generated using the channel candidate information; and adding, as the secondary cell, a channel selected on the basis of the channel state information by the base station; and a device.

This closure relates to narrowband communication supporting an Internet of Things (IoT) service in a next-generation wireless communication system and, more particularly, to a method and apparatus for transmitting and receiving narrowband synchronization signals. A base station repeats a Zadoff-Chu sequence on each of multiple OFDM symbols; multiplies each component of a cover sequence, having a length corresponding to a number of the multiple OFDM symbols, to all the components of the Zadoff-Chu sequence on each of the multiple OFDM symbols. Then, the base station transmits the NB PSS by using the Zadoff-Chu sequence multiplied by the cover sequence to the one or more UEs.

The present disclosure provides a method for receiving a synchronization signal/physical broadcast channel (SS/PBCH) block by a terminal in an unlicensed band. Particularly, the method may comprise: receiving an SS/PBCH block including an SS and a PBCH; detecting an index of a demodulation reference signal (DMRS) sequence for the PBCH; and on the basis of the index of the DRMS sequence, acquiring information relating to a time when an index of the SS/PBCH block and the SS/PBCH block are received, wherein the number of indices of the SS/PBCH block is smaller than or equal to the number of indices of the DMRS sequence, and the indices of the SS/PBCH block are cyclically mapped to the indices of the DMRS sequence.

There is disclosed a radio node for a wireless communication network, the radio node being adapted for processing reference signaling based on a coding, the coding being based on a Golay sequence. The disclosure also pertains to related devices and methods.

A circuit arrangement may include a first detection circuit configured to evaluate signal data of a carrier channel to identify a timing location of a synchronization signal within the signal data, a second detection circuit configured to, using the timing location as a reference point, extract a first candidate synchronization signal from a first candidate timing location of the signal data and to extract a second candidate synchronization signal from a second candidate timing location of the signal data, and a decision circuit configured to analyze the first detection synchronization signal and the second candidate synchronization signal to determine a duplex mode of the carrier channel.

A terminal apparatus for a device-to-device (D2D) terminal in a wireless communication system, according to an embodiment of the present invention, comprises a transmission device and a reception device; and a processor, wherein the processor generates and transmits a primary sidelink synchronization signal (PSSS) and a secondary sidelink synchronization signal (SSSS), wherein, if a PSBCH is transmitted in a subframe in which the PSSS and the SSSS are being transmitted and is normal CP, the PSSS and a PSBCH on power is the average power of a period, in the subframe in which the PSSS and the SSSS are being transmitted, not including a transient period, wherein the transient period of a starting part of the period for the PSSS and PSBCH ON power is not overlapped with an OFDM symbol on which the PSSS is transmitted.

The present invention provides a downlink channel decoding method, a downlink information transmission method, a user equipment, and a base station. The downlink channel decoding method includes: determining, by a user equipment, a resource unit occupied by a DMRS; and decoding a downlink channel based on the DMRS transmitted on the resource unit. The present invention can enable different DMRS patterns to concurrently exist on an NCT carrier. In a downlink transmission process, a DMRS pattern used for downlink transmission is determined according to priorities of different channels and/or signals, which can ensure optimal performance of a high-priority channel and/or signal, and can further improve downlink transmission performance.

A wireless device may receive configuration information associated with reduced transmission power time intervals of a first base station. Interference cancellation may be performed based on the configuration information and based on received signals to determine a signal corresponding to a second base station.

During cell search procedure in 3GPP LTE wireless communication system it is required to detect multiple cells which may be observable by a client terminal. In conventional cell detection a client terminal may detect false cells along with true cells. The number of false cells may depend on specific conventional detection algorithm used. A method and apparatus are disclosed that use of Differential Correlation based SINR metric for filtering out false cells from the list of detected cells reported by the conventional cell detection methods. The combination of conventional cell detection and Differential Correlation SINR based false cell filtering enables significant reduction in false cells reported to the network and reduces power consumption in a client terminal.