Abstract:
Disclosed is a data transmitter, including: a demultiplexer configured to demultiplex a data subcarrier, and a training sequence or a pilot subcarrier included in a signal which needs to be frequency-shifted among a plurality of signals; a frequency shift unit configured to frequency-shift the demultiplexed data subcarrier based on a predetermined frequency; a superposition unit configured to generate a polarization signal by superimposing the demultiplexed training sequence or pilot subcarrier, and the frequency-shifted data subcarrier; and a polarization antenna configured to transmit a signal which need not be frequency-shifted and the generated polarization signal among the plurality of signals.
Abstract:
Disclosed is an apparatus for transmitting multiple streams, including: a polarized wave control unit generating non-orthogonal polarization information for three or more input streams; a polarized wave generating unit polarizing three or more input streams in a baseband based on the non-orthogonal polarization information to generate vertical and horizontal polarization components; and a polarized wave transmitting unit transmitting the plurality of vertical and horizontal polarization components through dual polarization antennas.
Abstract:
An operation method of an IAB node in a communication system may comprise: measuring a power difference between a first signal received from a first node and a second signal received from a second node; controlling a transmit power of each of the first node and the second node based on the power difference; generating scheduling information for allowing the first node and the second node to simultaneously transmit signals; transmitting the scheduling information to the first node and the second node; and receiving signals that the first node and the second node simultaneously transmit according to the scheduling information by using the transmit power.
Abstract:
A method of performing, by a device, a random access procedure in a radio communication system includes: receiving from a base station RACH configuration information; and transmitting a first message based on the received RACH configuration information. Herein, a plurality of SSBs may be in association with a plurality of preambles, and the first message may be transmitted in a time domain through a plurality of RACH resources.
Abstract:
Provided is a beam forming device forming a beam based on an RF signal, including: a multiplexing control module determining a beam feature of the beam based on user terminal information and generating multiplexing control information on which the beam feature is reflected; an antenna multiplexing module receiving the RF signal and multiplexing the RF signal according to the generated multiplexing control information; and an antenna array including multiple antenna elements to form a beam according to the multiplexed RF signal.
Abstract:
A method for performing sidelink groupcast transmission by a transmission terminal includes the steps of: classifying reception terminals belonging to a subject group into two or more subgroups; allocating different groupcast feedback schemes to the two or more subgroups; performing groupcast transmission to the reception terminals; and receiving feedback information from terminals belonging to at least one subgroup among the two or more subgroups according to the different groupcast feedback schemes.
Abstract:
A method for sidelink DRX communication may comprise configuring a first resource sensing window for identifying whether resources of a candidate resource set to be used for sidelink DRX communication are reserved or used; identifying whether the resources of the candidate resource set are reserved or used based on the first resource sensing window; determining a selected resource set based on a result of the identification; configuring a second resource sensing window based on information on a DRX active time of a receiving terminal, which is received from the receiving terminal; identifying whether the resources of the candidate resource set are reserved or used by another terminal based on the second resource sensing window; updating the selected resource set based on a result of the identification on the second resource sensing window; and transmitting data to the receiving terminal by using a resource of the updated selected resource set.
Abstract:
Disclosed are a method and an apparatus for sidelink resource allocation in a wireless communication system. The method and apparatus for sidelink resource allocation in a wireless communication system, a method of a first terminal, may include: receiving, from a base station, resource pool configuration information including information on a resource sensing type; in response to that the information on the resource sensing type indicates a sensing operation, sensing transmission resource(s) within a sensing period according to the resource sensing type based on the scheduling information; selecting a first resource based on a result of the sensing on the transmission resource(s); and performing sidelink communication using the selected first resource.
Abstract:
An operation method of a relay node may include: receiving, from a first communication node, first data composed of n bits; receiving, from a second communication node, second data composed of m bits; in response to determining that n is greater than m, generating first T-data of m bits excluding (n−m) bits from the n-bits of the first data and first R-data of (n−m) bits; generating third data by performing a network coding operation on the first T-data and the second data; transmitting the third data to the first communication node; and transmitting the third data and the first R-data to the second communication node.
Abstract:
Provided is a beam forming device forming a beam based on an RF signal, including: a multiplexing control module determining a beam feature of the beam based on user terminal information and generating multiplexing control information on which the beam feature is reflected; an antenna multiplexing module receiving the RF signal and multiplexing the RF signal according to the generated multiplexing control information; and an antenna array including multiple antenna elements to form a beam according to the multiplexed RF signal.