Samsung Electronics Co., Ltd.

Seoul National University

Lg Electronics Inc.

Korea University Research and Business Foundation

Sunho Park

Byonghyo Shim

Hyoungju Ji

Taeyoung Kim

Minho Kim

Joonyoung Lee

Jiyun Seol

Sungnam Hong

Namhyun Kim

Jinjoo Chung

Doochan Hwang

Junghyun Park

Yeohun Yun

Chanhong Kim

Jongbu Lim

Seunghwan Lee

Hee Jeong Seo

Youngjoon Kim

Hyeongseok Roh

Kitaek Bae

Guyoung Lim

The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a data transmission rate higher than a 4th generation (4G) communication system such as long term evolution (LTE). A user equipment (UE) in a communication system is provided. The UE includes a transceiver, and a controller configured to receive, from a base station, system information including information related to transmission of a random access preamble, and to transmit, to the base station, a physical random access channel (PRACH) including the random access preamble. The PRACH includes at least one primary signal part including a first sequence for measuring a first delay within a symbol, and at least one secondary signal part including a second sequence for measuring a second delay in units of symbols, and a round trip delay (RTD) between the UE and the base station may be determined based on the first delay within the symbol and the second delay in units of symbols.

Method and apparatus for random access using PRACH in multi-dimensional structure in wireless communication system

Disclosed is an electronic device that receives a packet of a content image including a plurality of frames from an external device, transmits a signal indicating whether a packet is received, including a request for a bit rate of an image in a transmitted signal, receives a packet with a changed bit rate of the image based on the request, and displays the image on the display based on the received packet.

Electronic device and control method thereof

Provided are an electronic apparatus and an operating method of the same. The electronic apparatus includes: a communicator; a memory storing one or more instructions; and a processor configured to control the electronic apparatus by executing the one or more instructions to: collect peripheral device information based on a message received from a peripheral device, by using a first device discovery protocol and a second device discovery protocol; transmit the peripheral device information to a server through the communicator; and receive a home network device list of the electronic apparatus from the server through the communicator, the home network device list being generated by the server based on the peripheral device information.

Electronic apparatus and operating method of the same

Provided are an electronic device and a method of controlling an external device by the electronic device. According to various embodiments of the present disclosure, a method of controlling an external device by an electronic device includes displaying, on a screen, a first user interface (UI) corresponding to first UI data received from an external server, transmitting, to the external device, second UI data corresponding to the first UI, receiving, from the external device, coordinates selected by a user using the external device, obtaining additional information related to the first UI when the coordinates correspond to a position of the first UI displayed on the screen, and transmitting, to the external device, the additional information and an execution command of an application using the additional information.

Electronic device and method for same controlling external device

Disclosed is an electronic device performing a video transmission using a multi-wireless network and a controlling method thereof. The electronic device for receiving and reproducing contents includes: a communicator, and a processor to receive, from an external device, a signal including original data of contents through a main frequency band, and receive, from an external device through at least one sub frequency band, a connection state signal including information on original data, and control the communicator to transmit, to the external device through the main frequency band and the at least one sub frequency band, a response signal including information on whether original data is missing, and an amount of received data stored in a buffer.

QoS control device in multi-wireless network environment for video transmission and a controlling method thereof

A method by which a transmitting end operates in a wireless communication system comprises the steps of: performing sparse coding on information so as to have sparsity of which the number of non-zero symbols is K; configuring a codebook by including a code for spreading for each user; spreading the coded information by using one or more codes in the codebook; and transmitting a channel by overlapping the spread information. Therefore, even if the number of encoded symbols increases, the number of symbols actually having a value is very sparsely configured such that the complexity of a transmitter and a receiver does not increase, and thus restoration performance improves.

Method and device for transmitting information by using sparse coding

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate than in a 4G communication system such as LTE. The present disclosure relates to uplink transmission in a wireless communication system, and an operating method of a terminal includes mapping codes that are included in at least one codebook onto data symbols. and transmitting the data symbols spread by using the at least one codebook, and the data symbols are used for a base station to detect at least one active terminal including the terminal.

Apparatus and method for uplink transmission in wireless communication system

The present disclosure relates to a 5G generation or pre-5G communication system for supporting a higher data transmission rate than a 4G communication system such as LTE. The present disclosure relates to uplink transmission in a wireless communication system, and an operating method of a terminal includes: determining a second codebook for a reference signal, based on a first codebook for data; and transmitting at least one reference signal generated by using the second codebook, and at least one data signal generated by using the first codebook.

A method of receiving a signal by a receiver in a mobile communication system is provided. The method includes: receiving a reference signal from a transmitter; determining first channel information based on the received reference signal; receiving a data signal based on the first channel information; and determining second channel information based on the received data signal and the first channel information. Iterative channel estimation is performed to reduce channel estimation errors by determining errors of signals received from a turbo decoding unit and using symbol information as pilots even in subcarriers where the pilot signals are not transmitted, and to increase the accuracy of LLR calculation through an iteration process such as a detection and decoding process in comparison with the conventional technology, thereby increasing the reception performance of the turbo decoding unit and improving communication efficiency.

Method and apparatus for estimating communication channel in mobile communication system

A mobile terminal and controlling method thereof are disclosed. According to the present invention, after a search for informations related to an inputted search word have been performed, while the found informations are displayed, partial informations respectively representing the displayed informations by including the search word are extracted from the displayed informations. Finally, the extracted informations are enlarged and displayed as a list.

Growing community of inventors

Seoul, South Korea

Sunho Park