Abstract:
Provided are a machine type communication (MTC) support method and apparatus capable of providing efficient MTC service. First, when a base station transmits a subframe to which an MTC-physical control format indicator channel (PCFICH) is allocated using an MTC-PCFICH code that is cyclic-shifted on the basis of a control format indicator (CFI) to MTC user equipment (UE), the MTC UE detects the MTC-PCFICH from the received subframe by performing blind decoding of a cyclic shift, and detects a region occupied by a legacy physical downlink control channel (PDCCH) on the basis of the detected MTC-PCFICH. Accordingly, it is possible to support efficient MTC service in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE)-based mobile communication system while maintaining compatibility with a legacy LTE station.
Abstract:
Provided are an energy harvesting device capable of generating electric energy by effectively obtaining an electromagnetic wave emitted from an indoor lighting device and a power control system of a lighting device capable of performing self-power generation by using the energy harvesting device as a power source. The energy harvesting device using an electromagnetic wave according to an exemplary embodiment of the present disclosure includes: an interface unit made of a conductive material and configured to capture a conductive interference signal transferred through a conductive member of a lighting device; and a rectifier circuit unit configured to rectify the captured conductive interference signal to convert the rectified conductive interference signal to direct current power.
Abstract:
A farming field partition system calculates a cumulative solar radiation amount according to altitude at each position of a farming field using information of a shaded area and an unshaded area of the farming field at a specific time, groups the farming field based on a cumulative solar radiation amount according to a calculated altitude at a specific time at each position of the farming field, and visually displays a farming field partition according to a grouping result and displays the farming field partition on a screen.
Abstract:
Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF)/extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber.
Abstract:
A protection switching unit and a method of performing protection switching of the protection switching unit are provided. The method includes steps of detecting a fault that has occurred at a working path of a network; opening a first switch that is connected to the working path and closing a second switch that is connected to the protection path of the network; and maintaining a connection state of the first switch and the working path and a connection state of the second switch and the protection path, when a fault that has occurred at the working path is restored.
Abstract:
Touch screen display devices are disclosed. The touch screen display device may include a first substrate, a first sensor line extending in a first direction on the first substrate, an optical switching layer on the first sensor line, a second substrate on the optical switching layer, a second sensor line extending in a second direction crossing the first direction on the second substrate, an interlayer insulating layer on the second sensor line, and a third sensor line extending in the first direction on the interlayer insulating layer. At least one of the second and third sensor lines may sense a variation of a current or a capacitance from the first sensor line when a distance between the first sensor line and the second substrate is changed.
Abstract:
Disclosed are touch screens and methods of manufacturing the same. The touch screen may include a substrate, a first electrode extending in a first direction on the substrate, an interlayer insulating layer disposed on the first electrode, and a second electrode disposed on the interlayer insulating layer and extending in a second direction crossing the first direction. The interlayer insulating layer may have quantum dots that induce a change of a capacitance between the first electrode and the second electrode by a visible light incident on the substrate.
Abstract:
Disclosed is a wireless data transceiving method in a multi-point transmission environment. A data transmitting method of a base station includes determining priorities of a plurality of terminals, allocating a symbol to be transmitted to a low-priority terminal to a base layer, allocating a symbol to be transmitted to a high-priority terminal to an enhancement layer, performing hierarchical modulation, and transmitting the hierarchically modulated symbol. Accordingly, by combining CoMP transmission technology and hierarchical modulation, a data capacity for a cell edge terminal increases and necessary resources decrease.
Abstract:
When a communication node receives a packet from a user terminal, the communication node inquires into a dynamic path mapping table and requests user authentication of the user terminal from a cloud networking control apparatus, if a VSI corresponding to information of the packet does not exist. If a user is an authenticated user, the cloud networking control apparatus performs provisioning of the VSI and transmits information of a VSI in which provisioning is performed to the communication node. After the VSI is set, the communication node connects the VSI to a virtual private network and transfers the packet to the VSI that is connected to the virtual private network.
Abstract:
An apparatus for providing near field communication (NFC) for a mobile device, includes a USB (universal serial bus) signal processing unit configured to convert a signal of the mobile device, which is received through a USB interface into a value to be processed in a central processing unit, and convert a value received from the central processing unit into a signal to be transmitted to the USB interface. Further, the apparatus includes an analog signal processing unit configured to convert an analog signal received from an outside device into a digital signal, and convert a digital signal of the central processing unit into an analog signal to transmit the converted analog signal to the antenna.