Abstract:
A method for transmitting and receiving a signal by a terminal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: transmitting uplink data to a base station; and receiving an acknowledgement of reception of the uplink data, wherein a first area, to which the acknowledgement of reception is transmitted, is determined in such a manner that a difference value between the number of REs, to which a first antenna port is allocated, and the number of REs, to which a second antenna port is allocated, is a predetermined value or less.
Abstract:
One embodiment of the present invention relates to a method by which a base station transmits control information through an enhanced physical downlink control channel (EPDCCH) in a wireless communication system, and the control information transmission method comprises the steps of: mapping control information to an enhanced resource-element group (EREG) allocated to transmit the EPDCCH in a first EPDCCH physical resource block (PRB) set and a second EPDCCH PRB set, respectively; and transmitting the mapped control information, wherein an enhanced control channel element (ECCE) index corresponding to the EREG of the same position is connected with the same physical uplink control channel resource (PUCCH) in the first EPDCCH PRB set and the second EPDCCH PRB set, respectively.
Abstract:
The present invention relates to a wireless communication system and, more particularly, to a method by which a terminal receives an EPDCCH signal in a wireless communication system and a device for the same, the method comprising the steps of receiving a subframe including an EPDCCH set, wherein the EPDCCH set includes a plurality of EPDCCH candidates; and monitoring the plurality of EPDCCH candidates in the EPDCCH set in order to receive the EPDCCH signal, wherein the number of EPDCCH candidates having an aggregation level of L in the EPDCCH set is indicated and is limited to a value of a specific form under a predetermined condition.
Abstract:
Disclosed are a method by which a VRU transmits a safety message in a wireless communication system, and an apparatus therefor, the method comprising the steps of: transmitting state information to a base station on the basis of mobility information; receiving reconfiguration information about transmission parameters from the base station; and transmitting a safety message on the basis of the reconfiguration information, wherein the state information is included in a UEAssistanceInformation message and transmitted if a collision risk is predicted according to peripheral information and the mobility information, and the safety message is transmitted on the basis of transmission power and a transmission period that are changed according to the reconfiguration information.
Abstract:
Described in the present disclosure is a method for registering a cluster in advance between known VRUs, which are composed of relationships between protectors and protectees, and maintaining the VRU cluster in a state of movement of the cluster. In addition, proposed are a method for generating a cluster in various states of mobility amongst members, and a method in which VRUs maintain a cluster and update cluster information on the basis of received information while in a state of movement. In addition, proposed is a method in which, when some VRUs are unable to maintain a cluster, information about VRU deviation is sensed within the cluster or shared with the outside to prevent accidents.
Abstract:
Disclosed herein is a method of receiving, by a terminal of a vulnerable road user (VRU), a signal in a wireless communication system. The method include receiving a message related to a safety service of the VRU from a network, and outputting a warning message based on comparing a field defining a geographic area, in which the safety service is provided, in the message and a position of the terminal, wherein the warning message is output based on determining that the terminal exists within the geographic area.
Abstract:
A method by which a first user terminal transmits a signal in a wireless communication system is disclosed. The method can comprise: monitoring a message related to the mobility of one or more user terminals; transmitting, to a second user terminal selected from among the one or more user terminals, a message for requesting to join a cluster to which the first user terminal belongs; receiving, from the second user terminal, a message for acknowledging joining of the cluster; and transmitting a message related to the mobility of the cluster. In addition, the second user terminal can be selected on the basis of comparison between the mobility of the cluster and the mobility of the second user terminal.
Abstract:
Presented in the present disclosure is a method by which a driver situation monitoring device or adjacent vehicles detect the situation of a driver and/or a vehicle in which an abnormality occurs while driving, and provide, through a V2X communication device, the information to the vehicle in which the abnormality has occurred and adjacent vehicles, networks or related organizations, and thus accidents can be prevented or a vehicle in which an abnormality occurs can be controlled.
Abstract:
Provided is a method for providing a safety service in a wireless communication system via a host vehicle. The method may include: detecting an object outside the host vehicle through an object detection device; transmitting a first message providing notification of the detection of the object through a transmitter and a receiver; and outputting an image, for providing the object with the safety service, through an image output device to a prescribed area outside the host vehicle.
Abstract:
A method by which a terminal blind-decodes a PSCCH in a wireless communication system is proposed. The method comprises: receiving a blind decoding configuration from a network; and performing blind decoding in a first TTI on the basis of the configuration, wherein the blind decoding includes: first blind decoding on a first PSCCH on the basis of the first TTI; and second blind decoding on a second PSCCH on the basis of a second TTI shorter than the first TTI, and the configuration controls the number of times of the first blind decoding and/or the number of times of the second blind decoding to be performed by the terminal in the first TTI.