Abstract: Technology capable of replacing an external panel of a refrigerator is disclosed. A refrigerator door comprises a frame assembly disposed side by side on both sides to form an edge of the refrigerator door and having a hollow portion formed in a longitudinal direction, a front panel coupled to one side of the frame assembly to form a front surface of the refrigerator door, a rear panel coupled to the other side of the frame assembly to form a rear surface of the refrigerator door, and a reinforcing panel disposed between the front panel and the rear panel. The frame assembly or the reinforcing panel has coupling grooves formed to be concave rearward on one side facing the front panel, and the coupling grooves are formed on both sides and spaced apart in a vertical direction, and coupling protrusions, at least a portion of which is accommodated in and fixed to the coupling grooves, are formed on a rear surface of the front panel.

Abstract: Technology capable of replacing an external panel of a refrigerator is disclosed. A refrigerator door comprises a frame assembly disposed side by side on both sides to form an edge of the refrigerator door and having a hollow portion formed in a longitudinal direction, a front panel coupled to one side of the frame assembly to form a front surface of the refrigerator door, a rear panel coupled to the other side of the frame assembly to form a rear surface of the refrigerator door, and a reinforcing panel disposed between the front panel and the rear panel. The frame assembly or the reinforcing panel has coupling grooves formed to be concave rearward on one side facing the front panel, and the coupling grooves are formed on both sides and spaced apart in a vertical direction, and coupling protrusions, at least a portion of which is accommodated in and fixed to the coupling grooves, are formed on a rear surface of the front panel.

Abstract: A method of positioning a terminal includes: receiving a first radio signal generated through beamforming from a base station; obtaining a cell ID and a beam ID from the first radio signal; obtaining a received signal intensity of the first radio signal; and estimating a first position of the terminal by comparing a fingerprint in which a cell ID, a beam ID, and a received signal intensity are mapped to each point on a map with the cell ID, the beam ID, and the received signal intensity obtained from the first radio signal.

Abstract: A method of positioning a terminal includes: receiving a first radio signal generated through beamforming from a base station; obtaining a cell ID and a beam ID from the first radio signal; obtaining a received signal intensity of the first radio signal; and estimating a first position of the terminal by comparing a fingerprint in which a cell ID, a beam ID, and a received signal intensity are mapped to each point on a map with the cell ID, the beam ID, and the received signal intensity obtained from the first radio signal.