Abstract:
The present invention concerns a method whereby a base station transmits a demodulation reference signal in a wireless communication system, and the demodulation-reference-signal transmission method comprises the step of transmitting a reference-signal sequence mapped onto a resource element on a carrier wave, wherein the position of the resource element onto which the reference signal sequence has been mapped is set so as to respectively differ in accordance with one or more of: the carrier wave type; wherein a cell-specific reference signal has been transmitted; the multiplexing method; and the position of the resource block where the resource element is contained.
Abstract:
The present invention relates to a method of receiving data by equipment in a wireless communication system and includes performing blind decoding an enhanced physical downlink channel (EPDCCH) in which a plurality of pieces of downlink control information (DCI) are transmitted; and decoding data on a physical downlink shared channel by using downlink-assigned DCI among the decoded DCI pieces, wherein if the downlink-assigned DCI corresponds to fallback mode DCI, demodulation reference signal information for decoding the EPDCCH to which the downlink-assigned DCI except for the fallback mode DCI is transmitted, is used for decoding the data on the physical downlink shared channel.
Abstract:
The present invention relates to a method for performing device-to-device (D2D) communication by a first terminal and a second terminal in a wireless communication system. The method includes: receiving a D2D communication setup response message including resource region information for the D2D communication from a base station; determining, based on the resource region information, whether to switch an operation frequency band of the first terminal from a first frequency band to a second frequency band; and performing the D2D communication with the second terminal at the first frequency band or the second frequency band according to the determined result, wherein either the first frequency band or the second frequency band may be used for transmission in the D2D communication and the other may be used for reception in the D2D communication.
Abstract:
Disclosed are a method for measuring channel state information in a wireless access system that supports an environment in which an amount of uplink resource and an amount of downlink resource dynamically change, and an apparatus for the method. In detail, the method comprises: a step of receiving interference measurement resource information including information on the location of an interference measurement resource set in an uplink resource for interference measurement; a step of measuring interference being received from an adjacent cell at the location of the interference measurement resource; a step of calculating channel state information using the measured interference value; and a step of transmitting the calculated channel state information to a base station.
Abstract:
The present invention relates to a method for transmitting control information by a base station in a wireless communication system, and includes a step of transmitting an enhanced physical downlink channel (EPDCCH) for a terminal using at least one physical resource block pair from among a plurality of physical resource block pairs. The plurality of physical resource block pairs include a plurality of resource units for the EPDCCH transmission to which an antenna port is allocated, respectively. When the EPDCCH for a terminal is transmitted using at least two resource units from among the at least one physical resource block pairs, the same pre-coding is applied to signals to be transmitted via at least two resource units.
Abstract:
The present application relates to a method in which a terminal transceives a signal in a wireless communication system. More particularly, the method comprises: a step of transmitting a measurement report on one or more neighboring base stations to a serving base station; a step of receiving a handover command message on a target base station from among said one or more neighboring base stations; and a step of performing handover to said target base station according to said handover command message. The handover command message includes an interference message received from said serving base station after performing said handover.
Abstract:
A method of transmission by a user equipment (UE) in a wireless communication system, the method including receiving, by the UE from a eNB, a physical downlink control channel (PDCCH) which is scrambled with one of a semi-persistent scheduling (SPS) Cell-radio network temporary identifier (RNTI) or a sidelink RNTI, wherein the PDCCH includes a downlink control information (DCI) format 0 including a three bit-field; and transmitting, by the UE, a signal based on the DCI format 0, wherein the three bit-field is related to a cyclic shift DMRS based on that the PDCCH is scrambled with the SPS C-RNTI, and wherein the three bit-field is used as a resource information for a sidelink communication, based on that the PDCCH is scrambled with the sidelink RNTI.
Abstract:
According to an aspect of the present disclosure, a method for transmitting, by a road side unit (RSU), a signal in a wireless communication system comprises: receiving, from another RSU, an infrastructure-to-infrastructure (I2I) signal for pairing; on the basis of the I2I signal for pairing, performing pairing with the other RSU; and on the basis of the pairing having failed, transmitting an infrastructure-to-vehicle (I2V) signal every preset period, wherein the I2I signal for pairing comprises information regarding a period change value associated with the preset period, and, on the basis of the pairing having succeeded, the I2V signal is transmitted every period into which the preset period has been changed on the basis of the period change value.
Abstract:
Disclosed are a method by which a first device transmits a message in a wireless communication system supporting sidelink, and a device therefor according to various embodiments. The method comprises: a step in which the first device receives a first safety message from a second device; a step of evaluating a collision risk on the basis of the first safety message and generating first event information on the basis of the collision risk evaluation; and a step of transmitting a threat notification message (TNM) including identification information of the second device and the first event information, wherein when the first safety message is a personal safety message (PSM), the threat notification message further includes information on a first risk region determined in response to the first event information.
Abstract:
Disclosed in one embodiment is a method for performing an operation for a first road side unit (RSU) in a wireless communication system, comprising the steps of: transmitting a first message to a second RSU; and receiving a second message from the second RSU, wherein the first message includes position information and a first position list of the first RSU, the second message includes position information and a second position list of the second RSU, and the first position list is updated with the position information and the second position list of the second RSU.