Abstract: Provided are an orbital angular momentum (OAM)-based transmitter, receiver, and communication method employing a radial concentric uniform circular array (UCA). The OAM-based communication method includes transmitting, by a transmitter, OAM multimode signals through a UCA-based transmitting antenna and receiving, by a receiver, the OAM multimode signals through a radial concentric UCA structure antenna including a plurality of UCA antennas. The plurality of UCA antennas each have the same number of antenna elements, and antenna elements having the same sequence number in the plurality of UCA antennas are on the same radial line in the radial concentric UCA structure antenna.

Abstract: In an N-port pattern/polarized antenna device, two-type antenna elements are configured to have a radiation pattern to use a spherical vector wave mode with at least N orders, the antenna elements being arranged at intervals not larger than a half wavelength between them. The antenna elements comprise electric field antennas with a radiation pattern distributed in an even mode among the spherical vector wave mode, and magnetic field antennas with a radiation pattern distributed in an odd mode, the electric field antennas and the magnetic field antennas being integrated to face a different direction, each other.

Abstract: A massive antenna-based pattern/polarization beam division multiple access method and an apparatus performing the same are provided. The massive antenna-based pattern/polarization beam division multiple access method includes generating a plurality of beam sectors for each antenna array by using a plurality of pattern/polarization antenna arrays and performing MIMO transmission in each of the plurality of beam sectors, wherein the plurality of pattern/polarization antenna arrays each have a different radiation pattern.

Abstract: A massive antenna-based pattern/polarization beam division multiple access method and an apparatus performing the same are provided. The massive antenna-based pattern/polarization beam division multiple access method includes generating a plurality of beam sectors for each antenna array by using a plurality of pattern/polarization antenna arrays and performing MIMO transmission in each of the plurality of beam sectors, wherein the plurality of pattern/polarization antenna arrays each have a different radiation pattern.

Abstract: Provided is a joint pattern beam sectorization method and apparatuses for performing the same, wherein the joint pattern beam sectorization method including generating, in a service target region, a pattern sector corresponding to an antenna array including antennas having an identical radiation pattern by using the antenna array and generating pattern beam sectors in the pattern sector through a beamforming using the antennas.

Abstract: In an N-port pattern/polarized antenna device, two-type antenna elements are configured to have a radiation pattern to use a spherical vector wave mode with at least N orders, the antenna elements being arranged at intervals not larger than a half wavelength between them. The antenna elements comprise electric field antennas with a radiation pattern distributed in an even mode among the spherical vector wave mode, and magnetic field antennas with a radiation pattern distributed in an odd mode, the electric field antennas and the magnetic field antennas being integrated to face a different direction, each other.

Abstract: The present invention relates to a method and apparatus for scheduling a downlink packet in a wireless communication system, which preferentially appoints a combination of a traffic flow and a physical resource block (PRB) having a low per-bit transmission power requirement during real-time traffic scheduling, and allocates the remaining PRBs to non-real-time traffic using spare transmission power. For this purpose, the downlink packet scheduling method of the present invention comprises: an operation of performing real-time traffic scheduling, which involves carrying out the process of preferentially appointing a combination of traffic flow and a PRB having the lowest per-bit transmission power requirement; a step of performing non-real-time traffic scheduling, which involves allocating remaining PRBs, which remain after the allocation to the real-time traffic, to non-real-time traffic using spare transmission power.

Abstract: Provided is a joint pattern beam sectorization method and apparatuses for performing the same, wherein the joint pattern beam sectorization method including generating, in a service target region, a pattern sector corresponding to an antenna array including antennas having an identical radiation pattern by using the antenna array and generating pattern beam sectors in the pattern sector through a beamforming using the antennas.

Abstract: A handover decision is capable of lowering a handover failure rate of horizontal handover between a source base station and a target base station in a wireless communication system. After deciding a target base station to which the mobile terminal is to be handed over, a hysteresis value for determining a handover execution point is decided, and execution of the handover of the mobile terminal occurs when a difference between the received signal strength of a signal received from the target base station to the mobile terminal and the received signal strength of a signal received from the source base station to the mobile terminal is continuously maintained at the hysteresis value or above during a predetermined time.

Abstract: A handover decision is capable of lowering a handover failure rate of horizontal handover between a source base station and a target base station in a wireless communication system. After deciding a target base station to which the mobile terminal is to be handed over, a hysteresis value for determining a handover execution point is decided, and execution of the handover of the mobile terminal occurs when a difference between the received signal strength of a signal received from the target base station to the mobile terminal and the received signal strength of a signal received from the source base station to the mobile terminal is continuously maintained at the hysteresis value or above during a predetermined time.

Abstract: The present invention relates to a method and apparatus for scheduling a downlink packet in a wireless communication system, which preferentially appoints a combination of a traffic flow and a physical resource block (PRB) having a low per-bit transmission power requirement during real-time traffic scheduling, and allocates the remaining PRBs to non-real-time traffic using spare transmission power. For this purpose, the downlink packet scheduling method of the present invention comprises: an operation of performing real-time traffic scheduling, which involves carrying out the process of preferentially appointing a combination of traffic flow and a PRB having the lowest per-bit transmission power requirement; a step of performing non-real-time traffic scheduling, which involves allocating remaining PRBs, which remain after the allocation to the real-time traffic, to non-real-time traffic using spare transmission power.