Samsung Electronics Co., Ltd.

Eun-Sun Choi

Soon-Young Yoon

Jae-Hee Cho

Yong-Seok Kim

In-Seok Hwang

Ki-Young Han

Byoung-Ha Yi

Hoon Huh

Bong-Gee Song

Sung-Joon Park

Young-Hoon Kwon

Sung-Soo Hwang

Sang-Hoon Sung

Jae-Hwan Chang

Soong-Yoon Choi

Jee-Hyun Kim

Soon-Yoon Yoon

An apparatus and method for dynamic frequency assignment to a low-power Base Station (BS) in a wireless communication system are provided. The method includes receiving a Received Signal Strength Indication (RSSI) measurement result for the whole Frequency Assignment (FA) and an available FA set of the BS from the BS newly entering a network, selecting an FA having a minimum RSSI among FAs included in the available FA set, and assigning the FA having the minimum RSSI to the BS.

Apparatus and method for dynamic frequency assignment in a wireless communication system

An apparatus and method for allocating a preamble index to a self configurable base station in a broadband wireless communication system are provided. The apparatus comprises a first selector for selecting a segment IDentifier (ID) to be allocated to a Self Configurable-Base Station (SC-BS) by using a per-segment ID Received Signal Strength Indicator (RSSI) estimated by the SC-BS, a second selector for selecting an ID cell to be allocated to the SC-BS by using geographical location information of surrounding BSs, and a communicator for transmitting a segment ID and the ID cell to the SC-BS.

Apparatus and method for allocating preamble index to self configurable base station in a broadband wireless communication system

A method for providing a single-frequency network (SFN) service between a base station (BS) and a mobile station (MS) in a wireless communication system. The BS sets a first segment indicator in a medium access control (MAC) message field before transmission, if a resource allocation scheme corresponds to general data transmission. The BS sets a second segment indicator in the MAC message before transmission, if the resource allocation scheme corresponds to single frequency-based data transmission. The MS receives the MAC message from the BS, and performs renumbering according to the first segment indicator or the second segment indicator included in the received MAC message.

System and method for providing services using the same frequency in a wireless communication system

Provided is a channel estimation apparatus and method in a broadband wireless communications system using a smart antenna are provided. In the channel estimation apparatus, an FFT processor converts a received time-domain signal into a frequency-domain signal by FFT-processing the received time-domain signal. A channel acquirer estimates a first channel information for an SDMA user using a preamble signal allocated to the SDMA user in the frequency-domain signal. A channel tracker estimates a second channel information for the SDMA user using pilots in a data area allocated to the SDMA user in the frequency-domain signal. A channel estimator estimates a final channel information by weighting the first channel information and the second channel information according to a channel change rate.

Apparatus and method for channel estimation in an SDMA-OFDM system

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Gwacheon-si, South Korea

Eun-Sun Choi