Samsung Electronics Co., Ltd.

Hanwha Chemical Corporation

Youngtaek Kim

Eunji Lee

Byungchul Jang

Youngsu Jiong

Hyungrok Kim

Kangtae Kim

Seongjoon Kim

Kyungjae Jun

Youngju Yoon

Taehee Gwak

Kyungjae Jeon

A multi-subscriber identity module (SIM) device including a first SIM for first wireless communication, a second SIM for second wireless communication, and a processor configured to allocate a radio frequency (RF) resource to any one of the first and second SIMs, control first uplink time alignment of the first wireless communication by allocating the RF resource to the first SIM, and adjust a first time alignment timer for the first uplink time alignment based on an RF resource allocation gap of the first SIM when the RF resource is allocated from the first SIM to the second SIM and the RF resource is reallocated from the second SIM to the first SIM may be provided.

Multi-sim device and operation method thereof

A communications system, a method of operating a communications system, and a method of operating a communications device are provided. The communications system includes a transmitter configured to transmit a data packet to a receiver; and the receiver configured to receive the data packet from the transmitter, wherein the receiver is configured to receive at least one first packet from the transmitter, determine whether there is a first failed packet having an error from among the at least one first packet, transmit a first status report requesting retransmission of the first failed packet, and transmit a second status report requesting retransmission of the first failed packet within a previously determined status report processing period from transmission of the first status report, wherein the first status report comprises first time information corresponding to a transmission time of the first status report from the receiver to the transmitter, and the second status report comprises second time information corresponding to a transmission time of the second status report from the receiver to the transmitter.

Communications signal retransmissions using status reports

A method of controlling on/off of a core based on a used amount of an operating core and the number of tasks in an electronic device having a multi-core, and an apparatus thereof, includes confirming a load of an operating core and the number of executable tasks at a predetermined period, determining whether the load of the operating core and the number of executable tasks meet a defined on/off condition of the multi-core, and controlling on/off of the multi-core when the load of the operating core and the number of executable tasks meet the defined on/off condition of the multi-core.

Apparatus and method for controlling power of electronic device having multi-core

The present invention relates to a process for the preparation of electrochemical catalysts of the polymer electrolytes-based fuel cells. With the process of the present invention, high catalyst activity while uniformly supporting a large amount of metal particles on a surface of a support can be achieved. Also, the present invention provides a process for the preparation of electrochemical catalysts of the polymer electrolytes-based fuel cells capable of using a small amount of toxic solvent without an additional high-temperature hydrogen annealing.

Process for the electrochemical catalysts of fuel cells based on polymer electrolytes

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Seoul, South Korea

Youngtaek Kim