Samsung Electronics Co., Ltd.

Beijing Samsung Telecom R&d Center

Young-Hak Kim

Yun-Sang Park

Jae-Hwan Chang

Bong-Gee Song

In-hyoung Kim

Min-Cheol Park

Hae-Dong Yeon

Ae-Ri Lim

Jeong-Hoon Park

Ji-Yun Seol

Jae-Yong Lee

Peng Chen

Jong-han Lim

Chae-Man Lim

Jae-Jeong Shim

Tae-Gon Kim

Kang-gyu Lee

Jun-Kyu Kang

Byung-Tae Kang

In-Hyoung Kim

Tae-Ik Song

Yun-Ho Jung

Jun-Kyoung Lee

A method and an apparatus are configured to support a plurality of Media Access Control (MAC) versions in a broadband wireless communication system. An operating method of a terminal to support the multiple MAC versions in the broadband wireless communication system includes receiving a message comprising information of one or more MAC versions supported by a base station, from the base station; and sending information of one or more MAC versions supported by the terminal, to the base station using a message. Thus, in the wireless environment where the multiple MAC versions are mixed, the MAC version can be matched.

Method and apparatus for supporting multiple MAC versions in broadband wireless communication system

An apparatus and method for regulating arrangement of pilot subcarriers to improve a channel estimation throughput in a wireless communication system using an Orthogonal Frequency Division Multiplexing (OFDM) scheme are provided. The apparatus includes a pilot pattern manager for providing control such that pilots are non-uniformly generated according to a distance of a preamble in order to provide a constant link throughput of the frame when the downlink frame is generated.

Apparatus and method for channel estimation in wireless communication system

An apparatus and method for operating an idle mode in a wireless communication system. The method includes transmitting, by a Mobile Station (MS) to a Base Station (BS), a RaNGing REQuest (RNG-REQ) message for changing a paging cycle while operating the idle mode; transmitting, by the BS to the MS, a RaNGing ReSPonse (RNG-RSP) message including paging information to be changed; and operating a new idle mode by the MS and the BS according to the paging information transmitted and received while operating the idle mode.

Apparatus and method for operating an idle mode in a wireless communication system

An apparatus and method for estimating UpLink (UL) transmission timing in a Mobile Station (MS) of a wireless communication system are provided. The method includes tracking DL timing by using a DL preamble signal received for each frame; estimating a time offset between a previous frame and a current frame by using the DL timing tracked for each frame; and estimating the UL transmission timing by using the estimated time offset.

Apparatus and method for estimating uplink transmission timing in wireless communication system

Methods and apparatus are provided for performing a handover from a macro base station to a home node in the macro base station of a mobile communications system. A location of a terminal is received from the terminal at the macro base station. A handover from the macro base station to the home node to which the terminal is registered is initiated, when a distance between the location of the terminal and a location of the home node is less than a first predefined threshold. A request for an allocation of frequency and resources having a minimum interference with the macro base station for the home node is transmitted to a home node controller.

Methods and apparatus for handover between macro base station and home base station

The multiple-antenna space multiplexing system using enhancement signal detection comprising: a code modulation module for coding and modulating bit information; a signal transmission module for transmitting the modulated signals; a signal reception module for receiving the signals; a signal form transform module for transforming form of a channel matrix H and the received signal vector r; a signal detection module for detecting the received signals; a signal reconstruction module for reconstructing the detection results of in the signal detection module, and obtaining a detected signal; a demodulation decoding module for demodulating and decoding the output of the signal reconstruction module, and outputting bit information. Compared with the conventional detection methods, the system performance is improved in considering the realization complexity.

Multiple-antenna space multiplexing system using enhancement signal detection and method thereof

An apparatus and method for canceling an interference signal in a broadband wireless communication system are provided. A receiver of a wireless communication system includes at least two receive antennas for receiving a target signal of a serving base station and interference signals of at least one neighbor base station; a channel estimator for estimating channels of the signals received through the receive antennas; and a detector for detecting the target signal using channel estimation values of the received signals. Accordingly, it is possible to reduce error propagation caused by the incorrect estimation and detection of the interference signal. In addition, time delay for detecting/restoring/removing the interference signal does not occur. Moreover, the increase of additional buffers can be prevented. Consequently, the increase of hardware complexity can be prevented.

Apparatus and method for canceling interference from neighbor cells in broadband communication system

A method and apparatus for processing time windowing to transmit a signal in a Broadband Wireless Access (BWA) communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A signal of a first interval included in a previous symbol prior to a current symbol is stored as a signal of a previous symbol interval. The current symbol includes a guard interval and an effective symbol interval subsequent to the guard interval. The current symbol is windowed by overlapping the stored signal of the first interval with a signal of a second interval included in the current symbol subsequent to the previous symbol. A windowed signal is transmitted.

Method and apparatus for transmitting a signal in a communication system

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Suwon-si, South Korea

Young-Hak Kim