Abstract:
Provided is a method and device for transmitting data in a wireless communication system. A wireless device establishes a connection in an unlicensed band, and transmits an extended signal for occupying a wireless channel during a silent-free interval in the unlicensed band.
Abstract:
A method for receiving, by a user equipment, a downlink signal, the method includes receiving, by the user equipment from a serving cell, discovery signal based radio resource measurement information for a cell different from the serving cell; receiving, by the user equipment from the cell, a discovery signal of the cell at discovery signal transmission periodicity based on the discovery signal based radio resource measurement information; and performing, by the user equipment, reference signal received power, RSRP, measurement for the cell based on the discovery signal.
Abstract:
A method and apparatus for receiving an indication of on/off state of past subframes in a wireless communication system is provided. A user equipment (UE) receives an indication of on/off state of past subframes for a specific time interval in a subframe, and perform measurement in subframes of on-state according to the received indication.
Abstract:
A method and apparatus for determining a length of a physical downlink shared channel (PDSCH) (or, a partial subframe) in a wireless communication system is provided. A user equipment (UE) detects at least one of starting orthogonal frequency division multiplexing (OFDM) symbol or ending OFDM symbol of a PDSCH in an unlicensed carrier, and determines the length of the PDSCH in the unlicensed carrier based on the at least one of the starting OFDM symbol or the ending OFDM symbol of the PDSCH in the unlicensed carrier. The UE may detect the at least one of starting OFDM symbol or ending OFDM symbol based on a physical downlink control channel (PDCCH) or a reference signal (RS) pattern.
Abstract:
Provided is a method and device for supporting a dual connectivity in a wireless communication system. A wireless device provides, to a base station, a device capability message including information on a dual connectivity band combination supporting the dual connectivity. The wireless device supports multiple timing advances (TAs) for the dual connectivity band combination.
Abstract:
A method and apparatus for configuring user equipment (UE) capability in a wireless communication system is provided. An evolved NodeB (eNB) configures a first UE for a first release of 3rd generation partnership project (3GPP) long-term evolution (LTE), which does not support 256 quadrature amplitude modulation (QAM), with a first category, and configures a second UE for a second release of 3GPP LTE, which supports 256QAM, with a second category.
Abstract:
The present invention provides a method for transmitting and receiving a signal for device-to-device (D2D) communication and an apparatus therefor, which are used in a wireless access system supporting D2D communication. A method for a device transmitting and receiving a signal according to one aspect of the present invention may comprise the steps of: identifying signals that are scheduled for a particular subframe configured for D2D transmission and reception; determining whether the scheduled signals overlap; and transmitting the scheduled signals on the basis of a pre-determined priority if the scheduled signals overlap. To this end, the priority may be determined based on the type of signal. More preferably, the priority may be determined in the order of a synchronisation signal, a D2D communication signal and a D2D discovery signal.
Abstract:
A method is presented for transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal by a user equipment (UE) in a wireless communication system. The UE is configured with a primary cell (PCell) and a secondary cell (SCell). The UE receives downlink control information (DCI) via a physical downlink control channel (PDCCH). The DCI including a first field for transmit power control information and a second field for ACK/NACK resource offset information. The UE receives downlink data via a physical downlink shared channel (PDSCH) based on the DCI. The UE transmits an ACK/NACK signal for the downlink data using an ACK/NACK resource. When the downlink data is received on the PCell, the ACK/NACK resource is determined by adding a lowest resource index of the PDCCH and a value of the ACK/NACK resource offset information. When the downlink data is received on the SCell, the first field includes ACK/NACK resource indication information.
Abstract:
A method is presented for a communication apparatus to transmit an uplink signal in a wireless communication system. The communication apparatus receives a control channel signal including resource allocation information indicating a plurality of non-consecutive resource sets, each of the resource sets including a single resource block group (RBG) or at least two consecutive RBGs. The communication apparatus transmits the uplink signal using the RBGs of the plurality of non-consecutive resource sets indicated by the resource allocation information of the control channel signal. The resource allocation information uses a combinatorial index corresponding to at least four different indices, s0, s1, s2 and s3, to indicate the two or more non-consecutive resource sets, whereby s0 and s1-1 indicate a starting RBG and an ending RBG, respectively, of a first resource set, or s2 and s3-1 indicate a starting RBG and an ending RBG, respectively, of a second resource set.
Abstract:
Disclosed is a method for transmitting and receiving a signal by a device to device (D2D) terminal in a wireless communication system, according to an embodiment of the present invention, the method comprising the steps of: calculating a power headroom; and reporting the power headroom to a base station, wherein, if a terminal performs an uplink transmission to the base station on a first component carrier and performs a D2D transmission on a second component carrier, the terminal, when calculating the power headroom, considers transmission power related to a minimum coverage for D2D communication.