Samsung Electronics Co., Ltd.

Deok-Ki Kim

Jung-Soo Woo

Dong-seek Park

Seung-Hoon Park

Do-Young Kim

Ho-Kyu Choi

Su-Ryong Jeong

Cheng Shan

Hyeon-Woo Lee

Eun-Taek Lim

Sung-Kwon Hong

Geun-Ho Lee

Yong-Ho Park

Young-Kyun Kim

Young-Kwon Cho

Song-Nam Hong

David Mazzarese

Petar Popovski

Hiroyuki Yomo

Ragnar Viôir Reynisson

Elisabeth De Carbalho

A call connection method and apparatus in a communication system are provided, in which a call connection request message is received from each of first and second terminals, it is determined whether the first and second terminals are requesting a call connection to each other, one of the first and second terminals is selected if the first and second terminals are requesting a call connection to each other, the call connection request of the selected terminal is rejected, and a call is connected between the first and second terminals by performing a call connection to the selected terminal according to the call connection request of the non-selected terminal.

Apparatus and method for performing call connection in a communication system

Provided is an apparatus and method for controlling power in a cognitive radio wireless communication system, the method comprising: performing channel scheduling and the first power control for at least one terminal; checking whether the at least one terminal exist within constraint area, and determining whether the at least one terminal within constraint area cause interference to incumbent system; and performing the secondary power control so that an allocating power may be less than the maximum tolerable interference.

Method and apparatus for jointly controlling transmit power in cognitive radio communication system

A method and apparatus for estimating a geo-location of a terminal in a wireless communication system are provided. In a method of operating a terminal for providing geo-location information in a cognitive ratio (CR) system, the method includes obtaining first ranging information and transmitting a first ranging code to a base station (BS) in a network entry process; receiving an allocated second ranging resource from the BS; and transmitting a second ranging code.

Method and apparatus for estimating geo-location of terminal wireless communication system

A method is provided for controlling power in a communication system. The power control method includes allocating a first data transmission region and a second data transmission region corresponding to a first communication scheme and second communication scheme; providing a communication service to a receiver through the first data transmission region, and receiving power control information from the receiver through the second data transmission region while providing the communication service; and adjusting a level of transmission power used for providing the communication service according to the received power control information, and providing the communication service to the receiver using the adjusted transmission power.

Method and system for controlling power in a communication system

A channel interleaving method and apparatus in a communication system using a low density parity check (LDPC) code. Upon receipt of information data bits, an encoder encodes the information data bits into an LDPC codeword using a predetermined coding scheme. A channel interleaver interleaves the LDPC codeword according to a predetermined channel interleaving rule. A modulator modulates the channel-interleaved LDPC codeword into a modulation symbol using a predetermined modulation scheme.

Channel interleaving/deinterleaving apparatus in a communication system using low density parity check code and control method thereof

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Seongnam-si, South Korea

Deok-Ki Kim