Abstract: A steel for a gear includes, based on a total weight of the steel: C: 0.10-0.30 wt %, Si: 0.60-0.80 wt %, Mn: 0.25-0.75 wt %, Cr: 1.80-2.20 wt %, Ni: 0.50-1.50 wt %, Mo: 0.20-0.40 wt %, Nb: 0.025-0.050 wt %, V: 0.030-0.050 wt %, and a balance of Fe and inevitable impurities, wherein contents of Nb and V satisfy the following <Relationship Formula 1>: 0.055<[Nb]+[V]<0.100??<Relationship Formula 1>, wherein [Nb] represents a content of Nb and [V] represents a content of V.

Abstract: An operating method is disclosed for a dehydrogenation reaction system. The method includes providing a system having: an acid aqueous solution tank including an acid aqueous solution; a dehydrogenation reactor including a chemical hydride of a solid state and receiving an acid aqueous solution from the acid aqueous solution tank to react the chemical hydride with the acid aqueous solution to generate hydrogen; and a fuel cell stack receiving hydrogen generated from the dehydrogenation reactor to be reacted with oxygen to generate water and simultaneously to generate electrical energy. The method also includes recycling the water generated from the fuel cell stack to one or all of the acid aqueous solution tank, the dehydrogenation reactor, and a separate water tank. The acid is formic acid and, in in the dehydrogenation reactor, the temperature is in a range of 10° C. to 400° C. and the pressure is in a range of 1 bar to 100 bar.

Abstract: An electronic device includes a display device, which may be fabricated using a described method. The display device includes a glass substrate including a first surface, a second surface opposite the first surface, and a side surface between the first surface and the second surface, an outermost structure on the first surface of the glass substrate and located adjacent to an edge of one side of the glass substrate, and a display area including a plurality of light emitting areas on the first surface of the glass substrate and located farther from the edge of the one side of the glass substrate than the outermost structure is. A minimum distance from the side surface of the glass substrate to the outermost structure is equal to 130 ?m or less.

Abstract: An electronic device is disclosed. The electronic device includes a communication circuitry that supports to transmit and receive data with a base station on a licensed band and an unlicensed band, a processor, and a memory electrically connected with the processor. The memory stores instructions, when executed, causing the processor to configure a first cell on a licensed band and configure a second cell on an unlicensed band, among a plurality of cells associated with the base station, trigger an unlicensed band preferred mode, and transmit control information for inducing to increase an amount of data transmitted and received over the unlicensed band to the base station, based on the triggering of the unlicensed band preferred mode. In addition, various embodiments recognized through the specification are possible.

Abstract: An electronic device according to an embodiment may comprise: at least one antenna; a first communication circuit connected to the at least one antenna and configured to communicate using a long term evolution (LTE) signal in a licensed band and an LTE signal in an unlicensed band; and a second communication circuit connected to the first communication circuit and at least a part of the at least one antenna, and configured to communicate using a Wi-Fi signal in the unlicensed band. The first communication circuit is configured to, acquire, from the second communication circuit, information on state of a channel in the unlicensed band associated with the first communication circuit and the second communication circuit, and determine a time interval associated with processing of the LTE signal in the unlicensed band. Various other embodiments recognized from the specification are also possible.

Abstract: An electronic device is provided. The electronic device includes at least one antenna on a designated band, at least one filtering unit for filtering signals received from the at least one antenna into a plurality of bands of the designated band, at least one switching unit for outputting the signals filtered by the at least one filtering unit to a first communication unit using a first communication function and a second communication unit using a second communication function, and a processor electrically connected with the at least one switching unit, the first communication unit, and the second communication unit for controlling the at least one switching unit so that, when a signal of a first band in the designated band is output to the first communication unit, a signal of a second band in the designated band is output to the second communication unit.

Abstract: An electronic apparatus is provided. The electronic apparatus includes a radio frequency (RF) module receiving a signal from a base station (BS) of a first network through a downlink subframe including a plurality of symbols in an unlicensed band and at least one processor operating in a first mode or in a second mode power consumed in the second mode is lower than power consumed in the first mode.

Abstract: An electronic device is provided. The electronic device includes one or more antennas that resonate within a licensed band and an unlicensed band, a first communication circuit electrically connected with at least part of the one or more antennas and processing an LTE signal, a second communication circuit electrically connected with at least part of the one or more antennas and processing a Wi-Fi signal, and a processor electrically connected with the first communication circuit and the second communication circuit. The processor is configured to obtain first data indicating a state of a first channel corresponding to a first communication protocol, obtain second data indicating a state of a second channel corresponding to a second communication protocol, select at least one communication protocol based on the first data and the second data, and perform communication through a communication circuit, which corresponds to the selected at least one communication protocol.

Abstract: An electronic device is disclosed. The electronic device includes a communication circuitry that supports to transmit and receive data with a base station on a licensed band and an unlicensed band, a processor, and a memory electrically connected with the processor. The memory stores instructions, when executed, causing the processor to configure a first cell on a licensed band and configure a second cell on an unlicensed band, among a plurality of cells associated with the base station, trigger an unlicensed band preferred mode, and transmit control information for inducing to increase an amount of data transmitted and received over the unlicensed band to the base station, based on the triggering of the unlicensed band preferred mode. In addition, various embodiments recognized through the specification are possible.

Abstract: An electronic device according to an embodiment may comprise: at least one antenna; a first communication circuit connected to the at least one antenna and configured to communicate using a long term evolution (LTE) signal in a licensed band and an LTE signal in an unlicensed band; and a second communication circuit connected to the first communication circuit and at least a part of the at least one antenna, and configured to communicate using a Wi-Fi signal in the unlicensed band. The first communication circuit is configured to, acquire, from the second communication circuit, information on state of a channel in the unlicensed band associated with the first communication circuit and the second communication circuit, and determine a time interval associated with processing of the LTE signal in the unlicensed band. Various other embodiments recognized from the specification are also possible.

Abstract: An electronic device includes a first communication module, a second communication module, a memory, a processor configured to be electrically connected with the first communication module and the second communication module, and a memory. The processor is configured to verify a first data packet to be transmitted via the first communication module. The processor is also configured to obtain scheduling information of a second data packet received via the second communication module. The processor is also configured to adjust a time when transmission of the first data packet is started, based on the scheduling information.

Abstract: An electronic apparatus is provided. The electronic apparatus includes a radio frequency (RF) module receiving a signal from a base station (BS) of a first network through a downlink subframe including a plurality of symbols in an unlicensed band and at least one processor operating in a first mode or in a second mode power consumed in the second mode is lower than power consumed in the first mode.

Abstract: An electronic device includes a first communication module, a second communication module, a memory, a processor configured to be electrically connected with the first communication module and the second communication module, and a memory. The processor is configured to verify a first data packet to be transmitted via the first communication module. The processor is also configured to obtain scheduling information of a second data packet received via the second communication module. The processor is also configured to adjust a time when transmission of the first data packet is started, based on the scheduling information.

Abstract: An electronic device is provided. The electronic device includes at least one antenna on a designated band, at least one filtering unit for filtering signals received from the at least one antenna into a plurality of bands of the designated band, at least one switching unit for outputting the signals filtered by the at least one filtering unit to a first communication unit using a first communication function and a second communication unit using a second communication function, and a processor electrically connected with the at least one switching unit, the first communication unit, and the second communication unit for controlling the at least one switching unit so that, when a signal of a first band in the designated band is output to the first communication unit, a signal of a second band in the designated band is output to the second communication unit.

Abstract: An electronic device is provided. The electronic device includes one or more antennas that resonate within a licensed band and an unlicensed band, a first communication circuit electrically connected with at least part of the one or more antennas and processing an LTE signal, a second communication circuit electrically connected with at least part of the one or more antennas and processing a Wi-Fi signal, and a processor electrically connected with the first communication circuit and the second communication circuit. The processor is configured to obtain first data indicating a state of a first channel corresponding to a first communication protocol, obtain second data indicating a state of a second channel corresponding to a second communication protocol, select at least one communication protocol based on the first data and the second data, and perform communication through a communication circuit, which corresponds to the selected at least one communication protocol.

Abstract: A method of controlling a data rate by a transmitting device in a wireless communication system and the transmitting device are provided. The method includes detecting a condition to change a current data rate; performing a probing process based on a bandwidth and a Modulation and Coding Scheme (MCS); and controlling the data rate based on a result of the probing process. The transmitting device includes a controller configured to detect a condition to change a current data rate; and a transmitter and a receiver configured to perform a probing process based on a bandwidth and an MCS, wherein the controller is further configured to control a data rate based on a result of the probing process.

Abstract: A method of operating a wireless local area network (WLAN) system is provided. The WLAN includes an access point supporting uplink multiple user multiple input multiple output mode. The method of operating the WLAN system includes selecting a first station, receiving channel information from the selected first station by a second station, calculating a SNR reduction value based on the channel information by the second station, and selecting the second station based on the SNR reduction value.

Abstract: A method of operating a wireless local area network (WLAN) system is provided. The WLAN includes an access point supporting uplink multiple user multiple input multiple output mode. The method of operating the WLAN system includes selecting a first station, receiving channel information from the selected first station by a second station, calculating a SNR reduction value based on the channel information by the second station, and selecting the second station based on the SNR reduction value.

Abstract: A wireless device in a first piconet using a first time-frequency code senses interference from a second piconet using a second time-frequency code that is different from the first time-frequency code. The wireless device detects a beacon period of the second piconet. The wireless device reserves at least one medium access slot corresponding to the beacon period of the second piconet among a plurality of medium access slots of the first piconet.