Samsung Electronics Co., Ltd.

Keun-Bok Kim

Chang-won Kim

Chang-Won Choi

Kyu-Il Yeon

Han-Ul Moon

Seock-Kyu Kim

A method for transmitting Ethernet data in a Digital Unit (DU) that processes a baseband and interfaces with at least two Radio Frequency (RF) Units (RUs) is provided. The method includes setting location information of two or more Ethernet channels in a first subchannel of a radio frame, allocating the two or more Ethernet channels in second subchannels of the radio frame, using the location information, and transmitting the radio frame to the at least two RUs.

Method for transmitting and receiving ethernet data between digital unit and RF unit and apparatus thereof

An apparatus and method of time keeping for a non-real-time OS is provided. The apparatus includes a processor and a Field Programmable Gate Array (FPGA). The processor requests performance of a Dual-Port Random Access Memory (DPRAM) read/write (R/W) operation in a DPRAM R/W time interval in a Time Division Multiple Access (TDMA) scheme using a system clock. Upon receipt of the DPRAM R/W operation performance request from the processor, the FPGA compares the operation performance request time with an access time table defining a DPRAM R/W time interval for each processor, generated in the TDMA scheme using the system clock. The FPGA performs the operation requested by the processor when the operation performance request has been made in the DPRAM R/W time interval of the processor.

Apparatus and method of time keeping for non-real-time operating system

An apparatus and a method for synchronization in a channel card in a mobile communication system are provided. A channel card for synchronizing a Digital Signal Processing (DSP) modem and a system clock in a mobile communication system includes the DSP modem for sending a reference signal, informing of a start of a transmission, to a Field-Programmable Gate Array (FPGA) modem, and the FPGA modem for comparing a reception time of the reference signal with a Global Positioning System (GPS) timer, for recording a GPS timer value corresponding to a start point based on the comparison, and for sending to the DSP modem the recorded GPS timer value corresponding to the start point at a preset GPS timer reference time.

Growing community of inventors

Suwon-si, South Korea

Keun-Bok Kim