Electronics and Telecommunications Research Institute

Motorola Corporation

Korea Telecom

Woo-Sug Jung

Jong-Dae Park

Hwan-Jo Heo

Nam-Seok Ko

Byung-Ho Yae

Sung-Kee Noh

Sung-Jin Moon

Soon-Seok Lee

Cheol Sig Pyo

Dae-Sik Kim

Sun-Joong Kim

Jong-Arm Jun

Tae-Wook Heo

Jung-Sik Kim

Seung-ki Hong

Byung-Yong Sung

Kwang-suk Song

Tae-Soo Chung

Kwang-Sug Song

Hwan-Geun Yeo

Ho-Geun Lee

Young-Min Ji

A method of assuring QoS in consideration of fairness in a contention-based wireless network and a terminal for the same are provided. When a token is allocated by a wireless access point, the terminal determines priority of a data frame which the terminal intends to use in communication, through a scheme of splitting the allocated token. Therefore, fairness can be assured by selection of the terminal.

Method and apparatus for providing fairness-assured quality of service in contention-based wireless network

A mobile communication terminal device equipped with a replaceable communication module and a back cover thereof are provided. The mobile communication terminal device includes: a host processor configured to control and operate the mobile communication terminal device; a baseband processing unit configured to process a mobile communication protocol; and a radio frequency (RF) signal processing unit configured to wirelessly communicate with a mobile communication network, wherein the host processor, the baseband processing unit and the RF signal processing unit are further configured to be implemented as modules that are attachable to or detachable from a printed circuit board (PCB) of the mobile communication terminal device.

Mobile communication terminal device equipped with replaceable communication module and back cover thereof

A packet scheduling method and apparatus which allows multiple flows that require data transmission to the same output port of a network device such as a router to fairly share bandwidth. The packet scheduling method includes calculating an expected time of arrival of a (k+1)-th packet subsequent to a currently input k-th packet of individual flows by use of bandwidth allocated fairly to each of the flows and a length of the k-th packet; in response to the arrival of the (k+1)-th packet, comparing the expected time of arrival of the (k+1)-th packet to an actual time of arrival of the (k+1)-th packet; and scheduling the (k+1)-th packet of each flow according to the comparison result.

Packet scheduling method and apparatus based on fair bandwidth allocation

A distributed packet processing apparatus capable of distributing packet load across a plurality of packet processing engines is provided. The distributed packet processing apparatus includes a plurality of processing engines each configured to process allocated packets, a first tag generating unit configured to allocate an input packet to a processing engine, which has a processing engine index corresponding to a tag index for the input packet, among the plurality of processing engines, a second tag generating unit configured to calculate a tag index for an output packet, and an index conversion unit configure to convert the tag index for the output packet to one processing engine index among a plurality of processing indexes for the plurality of the processing engines and allocates the output packet to a processing engine having the one processing engine index such that loads are distributed among the plurality of processing engines.

Apparatus and method for balancing load across multiple packet processing engines

A packet scheduling apparatus and method to fairly share network bandwidth between multiple subscribers and to fairly share the bandwidth allocated to each subscriber between multiple flows are provided. The packet scheduling method includes calculating first bandwidth for each subscriber to fairly share total bandwidth set for the transmission of packets between multiple subscribers; calculating second bandwidth for each flow to fairly share the first bandwidth between one or more flows that belong to each of the multiple subscribers; and scheduling a packet of each of the one or more flows based on the second bandwidth.

Method and apparatus for providing per-subscriber-aware-flow QoS

Provided are an apparatus and method for asset tracking based on a ubiquitous sensor network (USN) using a motion sensing. The apparatus may include: a motion sensing manager to receive motion sensing information from a sensor; a filtering processor to filter the motion sensing information based on a filtering parameter and to determine whether a motion occurs based on the filtered motion sensing information; and a location information update (LU) manager to perform LU depending on whether the motion occurs.

Apparatus and method for asset tracking based on ubiquitous sensor network using motion sensing

A control system, which is capable of performing a fault-tolerant function realized in the manner of duplication by merely transferring memory ownership from one processor module to another with the use of a method of extending a memory bus, is provided. Each processor module in the control system includes an A-port memory and a B-port memory which store memory data of their own processor module (the self processor module) or memory data of the other processor module and a memory bus switch which performs switching-over to selectively store data of the self processor module or data transmitted from the other processor module in the A-port or B-port memory, depending on whether the self processor module or the other processor module has memory ownership.

Apparatus and method for fault-tolerant control using fully distributed common memory

A high speed data transfer apparatus includes a data transfer controlling unit for outputting a signal to the standby mode system during the active mode system, and during the standby mode system, reading data and the data information stored in the second storing unit of the active mode system, storing the read contents in the second storing unit of the standby mode system, and transferring a right to a bus use through the local bus of the standby mode system, the signal being used for informing that there exists data to be transferred.

High speed data transfer apparatus for duplexing system

Growing community of inventors

Daejeon-si, South Korea

Woo-Sug Jung