Abstract: An electronic device includes a housing, a circuit board disposed within the housing, a first component and a second component disposed on one surface of the circuit board, a shielding mold disposed on the one surface of the circuit board to cover top and side surfaces of the first component, and an open structure disposed on the one surface of the circuit board to surround a side surface of the second component. In the open structure, a top portion is opened and exposes a part of the second component or the circuit board, an inner surface is spaced apart from the second component, and an outer surface contacts the shielding mold.

Abstract: A protection switching method in a time sensitive network of a ring topology consisting of layer 2 switch-based nodes includes ranging to measure a first delay until a packet arrives at each node, RT, after transmitted by the main node OT via a path of a first direction and a second delay via a path of a second direction, performing a transmission delay compensation in the first direction or in the second direction based on the first and second delays, transmitting data to one direction of the first direction and the second direction based on the delay compensation, and performing a protection switching and compensating by performing the protection switching and compensation based on the measured delay after the switchover.