Abstract: A method and apparatus of allocating a ranging channel in a wireless communication system is provided. A base station (BS) allocates at least one first ranging channel, having a first structure, and at least one second ranging channel, having a second structure, to a ranging subframe. The first structure or the second structure can be one of the ranging channel structures of an IEEE 802.16e system. A number of orthogonal frequency division multiplexing (OFDM) symbols included in the first structure and a number of OFDM symbols included in the second structure differs from each other. And a guard time including at least one OFDM symbol is allocated between the at least one first ranging channel and the at least one second ranging channel.

Abstract: Disclosed are a method and a device for transmitting uplink control information (UCI) by a terminal in a wireless communication system. The UCI transmission method comprises the steps of: generating an encoding information bit stream by performing channel coding for a UCI bit stream; generating complex modulation symbols by performing modulation for the generated encoding information bit stream; spreading the complex modulation symbols in block-wise on the basis of an orthogonal sequence; and transmitting the spread complex modulation symbols to a base station. The encoding information bit stream is generated by a channel coding for circularly repeating the UCI bit stream.

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single code word; obtaining a first modulated symbol sequence from the single code word; obtaining, from the first modulated symbol sequence, a plurality of second modulated symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulated symbol sequences in a time domain to obtain a plurality of third modulated symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulated symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.

Abstract: There is provided a method of enabling a user equipment to transmit a control signal to a base station. The method includes allocating a control signal to a control region on a subframe comprising the control region for the control signal and a data region for user data, wherein different frequency bands within the control region are allocated to different user equipments, and transmitting the subframe in uplink direction. A control signal can be robustly transmitted under variance of channel condition.

Abstract: A method for performing a cell search procedure by a user equipment in a wireless communication system includes receiving a primary synchronization signal (PSS), and obtaining a correlation value of the PSS to detect a multimedia broadcast multicast service (MBMS) indicator indicating whether a service is a dedicated MBMS. Accordingly, whether the service is the dedicated MBMS is indicated using a primary synchronization signal or a secondary synchronization signal used in an initial cell search process, and whether the service is the dedicated MBMS can be known without additional complexity. Therefore, cell search of a user equipment can be more effectively performed.

Abstract: The present invention relates to a method in which a terminal transmits uplink control information in a wireless communication system using multiple carriers. The method comprises the following steps: receiving, from a base station, indication information that indicates whether or not to use multiple uplink control resources; determining a first uplink control resource on the basis of a specific control channel element (CCE) index of the CCE received from the base station; and, if the indication information indicates to use multiple uplink control resources, applying a predetermined rule to the specific CCE index to determine a second uplink control resource.

Abstract: A method of transmitting data in a wireless communication system, includes: transmitting first data via a first frame for a first wireless communication system; transmitting second data via a second frame for a second wireless communication system supporting backward compatibility with respect to the first wireless communication system; and transmitting control information with respect to the first and second frames, wherein the control information includes a frame control header (FCH) which indicates information about the second frame by using a reserved bit region of the first frame.

Abstract: A method and apparatus for transmitting a sequence in a wireless communication system is provided. A transmitter generates a block sequence comprising a first sub-block sequence and a second sub-block sequence, generates a phase modulated block sequence by performing phase modulation on the block sequence, maps the phase modulated block sequence to a plurality of sub-blocks, and transmits the phase modulated block sequence mapped to the plurality of sub-blocks.

Abstract: This is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized.

Abstract: A method for performing a wireless communication between a UE and a BS in a wireless communication system supporting a first UE using a single frequency band and a second UE using a plurality of frequency bands, to each of which OFDM is applied, is disclosed. The method includes being allocated one or more downlink component carriers for the second UE from the BS, and receiving the one or more downlink component carriers from the BS by the second UE. The one or more down-link component carriers are cyclically shifted by different cyclic shift values and the cyclic shifting is performed by multiplying each of the one or more downlink component carriers by a linear phase having a different inclination.

Abstract: A method for establishing RACH transmission to prepare against the frequency offset is disclosed. The method reduces the length of the RACH preamble even if the frequency offset exists, allows the RACH preamble to include a repeated structure (also called an iterative structure) or to use a specific sequence with less affect on the frequency offset, so that the Node-B can easily detect the RACH preamble. If different conditions are established in a high-speed UE and a low-speed UE, an amount of system overheads can be reduced as compared to another case in which an overall RACH condition has been prescribed for only the high-speed UE irrespective of the low-speed UE. And, the method determines whether the user equipment (UE) can estimate its speed according to the aforementioned RACH setup condition, and prescribes a detailed RACH access method according to the determined result.

Abstract: A method for transmitting/receiving an additional control signal without any loss of bandwidth and power in an original Tx signal is disclosed. If the additional control signal is transmitted via the Tx signal composed of at least one of data and control signals, at least one of the amplitude and phase of the Tx signal of the time- and frequency-resource domain is modulated according to the additional control signal to be transmitted. The modulated Tx signal is transmitted to the receiver, so that the additional control signal can be transmitted irrespective of the original Tx signal. According to a modulation status of at least one of an amplitude and a phase of the Rx signal contained in the time- and frequency-resource domain, the additional control signal can be acquired.

Abstract: A method for allowing a reception end to effectively detect a sequence used for a specific channel of an OFDM communication system, and apparatus for the same are provided. During the sequence transmission, a specific part of a Zadoff-Chu sequence corresponding to the frequency “0” is omitted from a transmitted signal. In addition, first 31 constituent components of the sequence are continuously mapped to frequency resource elements of “?31” to “?1”, and the last 31 constituent components of the sequence are continuously mapped to frequency resource elements of “1” to “31”.

Abstract: A method of generating random access preambles includes receiving information on a source logical index and generating random access preambles in the order of increasing cyclic shift from root ZC sequences with the consecutive logical indexes from the beginning of the source logical index until a predetermined number of the random access preambles are found, wherein the consecutive logical indexes are mapped to root indexes of the root ZC sequences.

Abstract: A method for a base station to receive a reference signal sequence from one or more devices within a cell of the base station in a multiple cell environment includes providing the one or more devices with information about the reference signal sequence, wherein the reference signal sequence is defined by a cyclic shift of a sequence within a sequence group identified by a group index (u), wherein the group index (u) is defined according to the cell in the multiple cell environment, wherein the sequence is given by a cyclic extension of a Zadoff Chu (ZC) sequence having an index (q) and a length (NZCRS), and wherein the index (q) is given by using the group index (u) and the length (NZCRS), and receiving the reference signal sequence from one or more of the one or more devices.

Abstract: A method for transmitting information using a sequence is disclosed. According to an embodiment, the method includes the steps of generating a sequence for transmitting data or control signals, performing phase modulation for indicating additional information on partial elements among a plurality of elements configuring the sequence, and transmitting the phase modulated sequence.

Abstract: The present invention relates to a method for receiving a terminal signal in a wireless communication system that supports plural component carriers, the method comprising: receiving a subframe including a plurality of OFDM symbols from a base station (BS); and receiving identification information indicative of a particular component carrier, from one or more consecutive OFDM symbols located at the front of the subframe, wherein the identification information indicative of the particular component carrier includes a carrier offset value with respect to a reference component carrier.

Abstract: Provided is a method for a device to receive a signal for synchronization. The method may include receiving the signal for synchronization as defined by a sequence corresponding to an interleaved concatenation of a first sequence and a second sequence. Components of the first sequence may correspond to odd-th components of the sequence corresponding to the interleaved concatenation. Components of the second sequence may correspond to even-th components corresponding to the interleaved concatenation. The method may also include detecting group identification (ID) that is defined based on a combination of a first ID of the first sequence and a second ID of the second sequence.

Abstract: Disclosed are a base station apparatus and a repeater apparatus for transceiving signals in a wireless communication system. The repeater apparatus comprises: a receiver which receives a signal from a base station through a first region of a first downlink subframe in a component carrier that supports first and second wireless communication schemes; and a transmitter which transmits, through a second region of the first downlink subframe, a signal to one or more terminals of one or more first type of terminals which use the first wireless communication scheme and one or more second type of terminals which use the second wireless communication scheme, simultaneously with said reception of the signal. Here, the first region and the second region are multiplexed in the first downlink subframe in accordance with a frequency division multiplexing (FDM) scheme.

Abstract: Disclosed are a terminal device for receiving a signal in a wireless communication system for supporting a plurality of component carriers and a method thereof. In the terminal device for receiving the signal in the system for supporting the component carriers, a receiver receives a Physical Downlink Control Channel (PDCCH) including control information of a first type component carrier from a base station or a relay. A processor performs a decoding operation or controls an operation in a slip mode on the basis of control information included in a PDCCH in a second type component carrier after a time corresponding to a particular time offset value passes from a transmission time point of the PDCCH.