An apparatus may receive a master information block and a synchronization signal (SS) block on a PBCH. The MIB may indicate an allocation associated with a CORESET. The apparatus may receive remaining minimum system information (RMSI) configuration information carried in the CORESET based on the allocation associated with the CORESET. The apparatus may determine a position associated with a downlink data channel based on a first value indicated by one of the MIB or the SS block in the PBCH and based on a second value indicated by the RMSI configuration information. The apparatus may receive data carried on the downlink data channel based on the position associated with the downlink data channel.

A base station according to an embodiment comprises a controller configured to manage a first cell operated using an allocation frequency band allocated by a mobile network operator and a second cell operated using a specific frequency band where occupying a frequency is not allowed by the mobile network operator. The controller performs processes of: transmitting to a mobile station through the first cell, an instruction signal that instructs transmission of a random access preamble through the second cell; and notifying the mobile station, an offset value of uplink transmission timing used in a communication in the second cell, on the basis of the random access preamble received from the mobile station through the second cell.

Disclosed is a method for transmitting a D2D signal. The method for transmitting a D2D signal according to the present application comprises the step of transmitting a D2D signal in accordance with the D2D resource configuration, wherein a transmission of a different D2D signal may not occur in a subframe for transmitting a synchronization signal.

The method of transmitting the reference signal includes receiving a synchronization signal in a subframe including contiguous first slot and second slot, and receiving a reference signal in the subframe, in which each of the first slot and the second slot includes a plurality of RBs and a plurality of OFDM symbols, the synchronization signal includes a PSS and a SSS, the PSS is received in the last OFDM symbol of the first slot, the SSS is received in a previous symbol before the last OFDM symbol of the first slot, a cell identifier is acquired based on the PSS and the SSS, the synchronization signal is received in center 6 RBs among the plurality of RBs, and the reference signal is received in at least one 01-DM symbol among the plurality of OFDM symbols in the second slot through the center 6 RBs.

A communication circuit arrangement may include a control circuit configured to determine occupied spectrum of one or more cells, identify one or more overlapped uplink center frequencies of target band that overlap with the occupied spectrum of the one or more cells, and select one or more target downlink center frequencies from a plurality of downlink center frequencies of the target band based on whether each of the one or more target downlink center frequencies is paired with an uplink center frequency of the one or more overlapped uplink center frequencies, the communication circuit further including a cell search circuit to perform cell search on the one or more selected target downlink center frequencies.

Systems and methodologies are described that facilitate efficient cell acquisition in a wireless communication system. In one aspect, a reference signal for use in cell acquisition can be constructed in a bandwidth-agnostic manner such that it contains a common central portion in a predetermined frequency band that is independent of a bandwidth utilized by an associated wireless communication system. The central portion can be constructed as a two-dimensional block in time and frequency that spans a default cell search bandwidth, a predetermined bandwidth specified by synchronization codes or other signals, or another suitable bandwidth. A reference signal can then be constructed form the central portion by tiling or expanding the central portion such that it spans the entire system bandwidth.

A network-side device, user equipment, and method for blind area management. The network-side device includes a receiving module configured to receive measurement information sent by user equipment, a processor, and a non-transitory computer-readable storage medium storing a program to be executed by the processor. The program includes instructions to identify a status of the user equipment according to the measurement information received from the user equipment, wherein the status of the user equipment is a normal communication state or a blind area state, and the blind area state includes at least one of a beam biased state, an interfered state, or a blocked state, and perform blind area management of the user equipment when the user equipment is in the blind area state.

An eNB transmits a preamble signal including synchronization information before transmitting data in an unlicensed band where the synchronization information is in accordance with a licensed frequency band communication standard used in a primary cell (Pcell) provided by the eNB. The preamble signal is transmitted in accordance with a timing structure used in the Pcell using the licensed frequency band. The eNB provides a secondary cell (Scell) that has a service area that at least partially overlaps with a service area of the Pcell. The preamble signal provides synchronization information to a user equipment (UE) device for the Scell.

The present disclosure relates to a communication technique for converging a 5G communication system for supporting a higher data transfer rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure may be applied to intelligent services (for example, smart home, smart buildings, smart cities, smart cars or connected cars, health care, digital educations, retail business, security and safety-related services, etc.) on the basis of a 5G communication technology and an IoT-related technology. The communication method for a terminal according to one embodiment of the present invention may comprise the steps of: detecting at least one synchronization signal; determining whether the at least one detected synchronization signal belongs to an operating frequency band for a terminal; and storing information relating to the at least one synchronization signal which has been determined as belonging to the operating frequency band for the terminal.

Provided are a method and a device whereby a synchronization signal is transmitted and received. One embodiment of the present invention involves using one of a plurality of cells (first cell hereinbelow) in order to transmit synchronization signal setting information of a cell (second cell hereinbelow) set in an unlicensed band of the plurality of cells. The synchronization signal is transmitted on the second cell, based on the synchronization signal setting information. The synchronization signal is used in order to acquire time and frequency synchronization with the second cell.