Samsung Electronics Co., Ltd.

Sang-Min Bae

Jin-Woo Heo

Young-Kwon Cho

Jong-Han Kim

Ji-Won Ha

In-Tae Kang

Jong-han Lim

Seong-Woo Ahn

Bo-Rham Lee

Jung-Hwa Bae

Jong-Yoon Hwang

Soo-Bok Yeo

Woo-Sang Hong

Seong-woo Ahn

Seo-Weon Heo

Yeung-Seob Shin

Hwan-Joon Kwon

Youn-Sun Kim

Min-Goo Kim

Ho-Kyu Choi

Sung-jin Kim

Dong-Min Kim

Hyun-Woo Lee

Sang-Hyuck Ha

Jung-Woo Lee

Sang-Cheol Lee

Sun-Min Hwang

Se-Hyoung Kim

Hee-Deog Kim

Hee-Jin Roh

Soon-Hyun Cha

Dong-Sun Lim

Jong-Han Lim

Soo-bok Yeo

Jun-Kyu Kang

Yong-Won Shin

Sun-Ju Kim

Hyun-Gu Lee

Shin-Ho Kim

Ju-ho Lee

Won-Kyu Suk

Mi-young Cho

Kyu-Hyun Kim

Jung-Uk Woo

Jeong-Gil Lee

Jin-Taek Noh

Seo-Won Heo

Chu-Hyon Yi

Sun-Gi Ku

A method for controlling call forwarding information in an electronic device is provided. The method includes generating call forwarding information, detecting an outgoing event to a partner electronic device, and transmitting the call forwarding information to the partner electronic device.

Method for controlling call forwarding information and electronic device thereof

A method in which a second electronic device communicates with a neighbor device is provided. The method includes connecting to a first electronic device, receiving first information for a third electronic device from the first electronic device, and controlling the third electronic device using the first information, wherein the first information includes control right information for the third electronic device.

Method for communicating with neighbor device, electronic device, and storage medium

A method of performing communication by a first electronic device is provided. The method includes receiving an input for communication with a third electronic device, determining at least one of a first communication module of the first electronic device and a second communication module of a second electronic device for the communication with the third electronic device, and controlling the first or second communication module for the communication with the third electronic device in response to the input.

Communication method, electronic device, and storage medium

An apparatus and a method for processing reduced bandwidth Envelope Tracking (ET) and Digital Pre-Distortion (DPD) are provided. The apparatus includes a Crest Factor Reduction (CFR) unit, a resealing Digital Pre-Distortion (DPD) unit, an envelope converter, a Supply Modulator (SM), and a Power Amplifier (PA). The CFR unit suppresses an increase of a side lobe occurring when a Peak to Average Power Ratio (PAPR) decreases with respect to a signal generated in a baseband according to a standard and passes through a transmit (Tx) filter. The resealing DPD unit receives an original envelope amplitude and a reduced bandwidth envelope amplitude of an In-phase/Quadrature-phase (I/Q) signal output from the CFR unit to perform a pre-distortion process. The envelope converter converts an envelope signal to a reduced bandwidth envelope signal based on the I/Q signal output from the CFR unit.

Apparatus and method for processing reduced bandwidth envelope tracking and digital pre-distortion

Provided are a method and an apparatus for extracting QoS parameters in a mobile device. In the method, all packets received from a terminal device are monitored, and SIP packets are filtered. When a real-time service application is executed on the terminal device, and an SIP request packet or an SIP response packet is filtered and input, QoS parameters are extracted from the SIP request packet or the SIP response packet. The extracted QoS parameters are incorporated into a wireless link data resource request and transmitted to a wireless network device. When a response to the wireless link data resource request is received, an uplink filter value for a new resource is extracted and added to a packet monitoring list.

Method and apparatus for extracting QoS parameters in mobile device

A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances.

Method and apparatus for reducing peak to average power ratio using peak windowing

A method and apparatus for transmitting a signal whereby it is determined if a Bandwidth Expansion Factor (BEF) Q is an integer, the BEF being determined as N/M according to a number N of subcarriers of a system band and a number M of subcarriers of an allocated band, an input signal to be transmitted Q times in a time domain when the Q is an integer is expanded, a Single Carrier Frequency Division Multiplexing Access (SC-FDMA) signal is generated, and the SC-FDMA signal is transmitted.

Apparatus and method for transmitting/receiving signal in single carrier frequency division multiplexing access communication system

A method and an apparatus for reducing Digital-to-Analog Conversion (DAC) bits at a transmitter of a Frequency Division Multiple Access (FDMA) system reduces a number of the bits for conversion so as to save power and reduce the cost of operation. The method can include generating a digital signal gain control value and an analog signal gain control value using subcarrier allocation information, a required Signal to Noise Ratio (SNR), and a Peak to Average Power Ratio (PAPR); controlling a gain of a signal input to a digital-to-analog converter using the digital signal gain control value; converting a digital signal of the controlled gain to an analog signal using the digital-to-analog converter; and restoring an original signal by controlling a gain of a signal output from the digital-to-analog converter using the analog signal gain control value.

Method and apparatus for reducing digital to analog conversion (DAC) bits in frequency division multiple access (FDMA) system

Provided are an apparatus and a method for estimating I/Q unbalance parameters in an OFDM receiver. The apparatus includes an unbalance parameter estimator and an I/Q unbalance compensator. The unbalance parameter estimator estimates an amplitude difference and a phase difference depending on positions of pilot tones in a preamble of a received signal. The I/Q unbalance compensator compensates for an I/Q unbalance using the amplitude difference and the phase difference estimated by the unbalance parameter estimator.

Apparatus and method for estimating I/Q unbalance parameters in OFDM receiver

An apparatus and a method for mitigating interference between uplink signals of a user equipment in a mobile communication system are provided. The apparatus includes a frequency regulator for, when fast movement of a user equipment is confirmed, changing a transmit frequency by calculating a frequency offset compensation value which compensates for a frequency required for a transmit frequency band.

Apparatus and method for controlling frequency in mobile communication system

A method and apparatus for preventing unauthorized use of a mobile terminal are provided, in which an execution code processor decrypts an Mobile Phone Certificate (MPC) using an MPC decryption code stored in it, when the mobile terminal is booted, an MPC processor compares a pre-stored MPC decryption execution code with the MPC decryption execution code, compares a pre-stored MPC encryption key with an MPC encryption key stored in the execution code processor. When the MPC decryption execution codes are identical, sets data required for an initial operation of the mobile terminal using an MPC management execution code included in a pre-stored MPC. When the MPC encryption keys are identical, decrypts Secured Code (SCode) blocks for execution of an application program, after executing the MPC management execution code. The execution code processor performs an operation program of the mobile terminal using the MPC management execution code and the decrypted SCode blocks.

Method and apparatus for preventing unauthorized use of mobile terminal

Disclosed is a reception apparatus and method of a mobile station in a Software Defined Radio (SDR) mobile communication system. A radio frequency (RF) processor converts a received RF signal into a digital signal, and outputs data on a per-unit basis according to a predetermined clock. An external memory stores the output data in a predetermined buffer area. A digital signal processing unit reads stored data samples and performs digital signal processing on the read data samples while storing the data in the external memory is completed.

Reception apparatus and method of a mobile station in an mobile communication system

An apparatus and method for receiving control information transmitted from a transmitter using one of a plurality of slot lengths in a high-speed packet transmission mobile communication system is provided. The apparatus and method includes a decoder adapted to receive symbols by the slot, and generate at least one bit stream by decoding as many symbols of at least one possible slot length among a plurality of slot lengths according to a previous decoding result. An error checker adapted to perform error checking on the bit stream from the decoder. A controller is adapted to provide symbols of one more consecutive slot to the decoder, if the error checking failed, and acquire control information from the error checking-passed bit stream, if the error check passed. The decoder is further adapted to output at least one frame quality metric for the bit stream along with the bit stream. If the number of error checking-passed bit streams is larger than or equal to 2, the controller compares frame quality metrics for the bit streams and selects one bit stream having the maximum frame quality metric in order to acquire the control information.

Apparatus and method for receiving packet data control channel in a mobile communication system

Disclosed is an apparatus and method for supporting automatic repeat request (ARQ) in a high-speed wireless packet data communication system. A mobile station receives control information including a subpacket identifier (SP_ID) representing the sequence of a subpacket, the size of an encoder packet (EP_SIZE), and a sequence identifier (AI_SN) that is toggled each time a new encoder packet is transmitted, while receiving one of a plurality of subpackets generated by segmenting a bit stream acquired by encoding a transmission encoder packet. The mobile station determines whether it will perform a decoding process caused by initial transmission or a decoding process caused by retransmission on the received subpacket, based on the control information.

Apparatus and method for supporting automatic repeat request in a high-speed wireless packet data communication system

An apparatus and method for measuring an SIR in a CDMA mobile communication system. The SIRs and power of PICHs and the power of PDCHs are measured sequentially for a plurality of active set base stations. An active set base station having the highest signal strength is selected according to the measurements. Thus a data rate is determined adaptively to the SIR for efficient high rate packet data transmission.

Apparatus and method for measuring a received signal to interference ratio in a mobile communication system

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Kyonggi-do, South Korea

Sang-Min Bae