Abstract: Systems, methods, and circuitries are provided to measure a swept error power ratio (SWEEPR) of a device under test. A method includes generating a time-variant stopband test signal having a time-variant stopband and determining an error of the device under test based on an output signal generated by the device under test in response to the time-variant stopband test signal.

Abstract: Methods, systems, and devices for wireless communication are described. User equipment (UE) and base stations may support frequency hopping with fast retuning for enhanced machine type communication (eMTC). For example, a UE may need to retune portions of its receive or transmit chain to support operation on various frequency bands, and it may perform the retune within a few symbols. Both base station and UE may anticipate or account for the retuning delay and communicate accordingly. A base station may refrain from transmitting for a certain period of time, for example. A base station may also account for frequency hopping delays for uplink communications. Systems may employ other techniques to support eMTC. For example, UEs may leverage reference signal patterns in certain control channels for demodulation. In some cases, base stations may alter control channel transmissions to account for various types of UEs with in the system.

Abstract: Provided is a technology capable of securing communication quality without providing an additional function such as phase correction. A base station device and a communication terminal device when operating as a transmitting device rotate inverse fast Fourier transform (IFFT) output, and copy a last portion of the rotated IFFT output to a head of the rotated IFFT output as a cyclic prefix (CP) to thereby generate a transmission signal so that there is no phase rotation at a head of a demodulation reception window set in a receiving device.

Abstract: Disclosed techniques for improving computational efficiency can be applied to synthesis and analysis in digital signal processing. A base discrete-time Orthogonal Frequency Division Multiplexing (OFDM) signal is generated by performing at least one linear transform, including an inverse discrete Fourier transform (IDFT), on a first matrix of data symbols. A sparse data matrix is provided as an update to the first matrix of data symbols. The at least one linear transform is performed on the sparse data matrix to generate an update discrete-time OFDM signal. The update discrete-time OFDM signal and the base discrete-time OFDM signal are summed to produce an updated discrete-time OFDM signal.

Abstract: This invention provides a communication apparatus including a wireless communication unit and an interface conforming to USB 3.0 standard, where the apparatus comprises a first determination unit which determines whether an external device has been connected to the interface; a second determination unit which determines a frequency band used in the wireless communication unit; a discrimination unit which, when it is determined that an external device has been connected to the interface, discriminates whether the frequency of noise generated in the communication with the external device causes interference with the frequency band of the wireless communication determined by the second determination unit; and a control unit which, if the discrimination result indicates that interfere is to be caused, performs control so as to communicate with the external device by driving the interface in accordance with the USB 2.0 standard.

Abstract: The application discloses a data processing device, a data processing method and a digital signal processing device. The data processing device is used to reduce computing amount by reading and writing operation of memory. The data processing device comprises: a module for calculating reduced coefficient matrices, a storage module, a module for modifying reduced coefficient matrices, a module for triangular inversing, a module for obtaining inversion matrices and a module for correcting reverse result.

Abstract: Provided is a sequence allocation method capable of reducing inter-cell interference of a reference signal when a ZC sequence is used as the reference signal in a mobile communication system. In the sequence allocation method, R×M sequences specified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M) are divided into a plurality of sequence groups X (X=1 to R) in accordance with the transmission band width of the reference signal, so that the ZC sequence is allocated to each cell in each sequence group unit. When it is assumed that R=9 and M=6, the number of sequences is 54. Each of the sequence groups is formed by two sequences. Accordingly, the number of sequence groups is 27. The 27 types of sequence groups are allocated to each cell.

Abstract: The present invention relates to a method of transmitting and a method of receiving signals, and corresponding apparatus. One aspect of the present invention relates to a method of obtaining a field for indicating a time de-interleaving depth from a layer 1 (L1) header of preamble symbols.

Abstract: A method and an apparatus are provided for transmitting channel state information (CSI) by a terminal in a communication system. The method includes receiving a first signal from a first serving cell; receiving a second signal from a second serving cell; calculating first CSI for the first serving cell based on the first signal; calculating second CSI for the first serving cell based on the first signal; calculating first CSI for the second serving cell based on the second signal; calculating second CSI for the second serving cell based on the second signal; transmitting the first CSI and the second CSI for the first serving cell respectively; and transmitting the first CSI and the second CSI for the second serving cell respectively.

Abstract: There is disclosed a method for operating a transmitting node of a wireless communication network, the transmitting node being adapted for a plurality of beamforming states, wherein the method comprises transmitting reference signaling based on a beamforming state of the transmitting node. There are also disclosed related nodes and methods.

Abstract: A coding and modulation apparatus and method are presented. The apparatus comprises an encoder that encodes input data into cell words, and a modulator that modulates said cell words into constellation values of a non-uniform constellation. The modulator is configured to use, based on the total number M of constellation points of the constellation and the code rate, a non-uniform constellation from one or several groups of constellations each comprising one or more constellations.

Abstract: The present application discloses a method for transmitting data, a terminal device and a network device, the method includes: receiving, by the terminal device, a control channel carrying resource indication information on a first time domain unit; if the value on the second bit field belongs to a first value set, determining, by the terminal device, that the at least one time domain symbol refers to all time domain symbols in a first symbol set; if the value on the second bit field belongs to a second value set, determining, by the terminal device, that the at least one time domain symbol refers to a time domain symbol in a second symbol set corresponding to the value on the second bit field; and transmitting, by the terminal device, the data channel on the at least one time domain symbol.

Abstract: Techniques are disclosed for partial band signal reconstruction. A partial band signal reconstruction circuit includes a zero generator, an analysis filter, and a synthesis filter. The zero generator is configured to generate a zero-value channel (i.e., a signal of all zeros). The analysis filter is configured to convert a wideband time-domain signal into K narrow-band channels, and to select at least R of the K frequency-domain subchannels for synthesis. The synthesis filter is configured to receive the at least R subchannels from the analysis filter and the zero or more zero-value channels from the zero generator and convert the at least R subchannels and the zero-value channels (a total of P channels) into a time-domain signal. The values of K and P are related by a constraint that constrains one or more parameters of the analysis filter and the synthesis filter.

Abstract: There is provided a communication device that communicates with another communication device, the communication device comprising: an arranging unit configured to arrange a demodulation reference signal and a group including a plurality of code blocks in a radio frame; and a transmitting unit configured to transmit the radio frame to the other communication device, wherein the plurality of code blocks are arranged in the radio frame based on a position of the demodulation reference signal in the radio frame.

Abstract: A communication method, including: receiving a reference signal, where the reference signal is used for channel measurement; sending CSI, where the CSI is used to indicate one or more measured values, and the measured values are used to determine a precoding matrix, or the measured values are a precoding matrix. The measured value is related to a first group of base vectors and a second group of base vectors, or the measured value is related to a Kronecker product of the first group of base vectors and the second group of base vectors; the first group of base vectors includes an inverse discrete Fourier transform OFT vector or a Kronecker product of two IDFT vectors, and the second group of base vectors include a discrete Fourier transform DFT vector.

Abstract: A transmitter for transmitting data to a receiver of a wireless communication network is disclosed. The wireless communication network includes a plurality of resource elements, and at least a subset of the plurality of resource elements is shared by a plurality of transmitters for transmitting data from the plurality of transmitters to the receiver. The transmitter includes at least one antenna, an encoder and a transceiver coupled to the encoder and to the antenna. The encoder receives a data element to be transmitted to a receiver of the wireless communication network, and maps the data element to a codeword obtained by selecting at least one vector from a unique set of vectors. The unique set of vectors is exclusively assigned to the transmitter, and each vector includes a plurality of symbols. Each symbol is to be transmitted over a resource element of the wireless communication network.

Abstract: Device, methods and systems for implementing aspects of orthogonal time frequency space (OTFS) modulation in wireless systems are described. In an aspect, the device may include a surface of an object for receiving an electromagnetic signal. The surface may be structured to perform a non-electrical function for the object. The surface may generate an electrical signal from an electromagnetic signal. The electromagnetic signal may be received from a transmitter. The transmitter may map digital data to a digital amplitude modulation constellation in a time-frequency space. The digital amplitude modulation constellation may be mapped to a delay-Doppler domain and the transmitter may transmit to the surface according to an orthogonal time frequency space modulation signal scheme. The apparatus may further include a demodulator to demodulate the electrical signal to determine digital data.

Abstract: A qubit controller includes an in-phase path and a quadrature path. A first combiner is configured to combine an output of the in-phase path with an output of the quadrature path to create a single sideband. There is a splitter configured to divide the single sideband into N portions, provide a first portion of the N portions to a qubit corresponding to the qubit controller, and provide each of the remaining N?1 portions to adjacent qubit controllers of a qubit cluster that includes the qubit corresponding to the qubit controller. A second combiner is configured to combine the first portion and N feedback signals received from the adjacent qubit controllers of the qubit cluster.

Abstract: A method and apparatus for configuring multiple common control channels (CCCHs) in a wireless communication system, specifically in a new radio access technology (NR) system, is provided. A user equipment (UE) configures a first CCCH and a second CCCH. The first CCCH has higher priority than the second CCCH in a logical channel prioritization (LCP) procedure. Upon detecting that data is available for the first CCCH and the second CCCH, the UE constructs a media access control (MAC) protocol data unit (PDU) including the data, based on a priority of the first CCCH and a priority of the second CCCH, and transmits the MAC PDU to a network.

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may transmit feedback, such as hybrid automatic repeat request (HARD) feedback for groups of code blocks rather than for an entire transport block or individual code blocks. The wireless device may transmit an acknowledgement (ACK) or negative-acknowledgement (NACK) to provide feedback for each code block group of a set of code block groups. An ACK may indicate that code blocks in a code block group were successfully decoded, and a NACK may indicate that at least one code block in a code block group was not successfully decoded. Wireless devices may support several techniques for grouping code blocks for feedback reporting to allow for efficient retransmissions and limited overhead. Different grouping schemes may be employed depending on system constraints, device capability, link conditions, or the like.

Abstract: Systems and methods for providing high-throughput and reliable operation in WiFi and cellular environments stem in antenna volume-constrained devices employs a switched or multiplexed cellular band antenna to support WiFi MIMO for mobile handheld operation. The device housing may a single, unitary metallic piece having the device antennas formed as part of the housing. Alternatively, one or more antennas may be internal to the device.

Abstract: The base station includes an encoder that encodes a first set of bits of MTC information with a first coding rate and encodes a second set of MTC information bits with a second coding rate. The first set and second set of bits are modulated using layered modulation and broadcast within the service area of the base station in a first transmission such that the first set of bits can be recovered using the low modulation order and the second set of bits can be recovered using the high modulation order. A relay station receives, demodulates and decodes the first transmission to recover at least the second set of bits. The relay station transmits a second set transmission including at least the second set of bits to at least one MTC device that did not recover the second set of bits from the first transmission.

Abstract: Methods and apparatus for identification of macro-cells and subordinate transmission nodes. In one embodiment, the methods and apparatus are configured for use within a long term evolution (LTE/LTE-A) network, and include a scrambling technique which can facilitate advanced capabilities in which the subordinate nodes possess unique cell identities from the macro-cell. The use of unique scrambling sequences allows subordinate node switching and other advanced multi-antenna techniques in heterogeneous networks. The disclosed methods and apparatus further allow for distinction and detection of signals transmitted from low-power RRHs, femto-cells, etc. and advantageously achieve greater interference randomization gain.

Abstract: A precoding matrix indicating and determining method, including determining a precoding matrix indicator (PMI) having R groups of space-frequency information corresponding to R transmission layers, where the R groups of space-frequency information are used to determine a precoding matrix of each subband, and an rth group of space-frequency information in the R groups indicates P×L space domain vectors corresponding to an rth transmission layer in the R transmission layers, K frequency domain vectors corresponding to the rth transmission layer, and P×L×K coefficients corresponding to the rth transmission layer, where each of the P×L×K coefficients indicates a linear superposition coefficient of a vector operation result of a P×L space domain vectors and one of the K frequency domain vectors, R is a quantity of transmission layers, P is a quantity of polarization directions, and R, r, P, L, and K are all positive integers, and sending the PMI.

Abstract: An electronic device may include a baseband processor and P antenna elements. The antenna elements may concurrently convey signals within M signal beams. The baseband processor may have a demultiplexer that receives a stream of M symbols. The processor may have M parallel data paths coupled between the demultiplexer and a beam former. The beam former may be coupled to amplifier circuitry over P parallel data paths. Inverse fast Fourier transformers (IFFTs) may be interposed on the M parallel data paths. A feedback path may be coupled between the M parallel data paths and the P parallel data paths. Crest factor reduction (CFR) circuitry may be interposed on the feedback path. The CFR circuitry may perform CFR operations on signals from the P parallel data paths iteratively and concurrently. This may minimize PAR in the system while supporting concurrent transmission of radio-frequency signals in multiple signal beams.

Abstract: A method for allocating transmission resources to at least one terminal of a set of D2D terminals available for direct communication implemented by a cellular access network having a base station. The base station has knowledge of a statistic relating to the state of the D2D channels. The method includes, for a transmission interval: determination, by the base station, of a subset among different subsets of D2D terminals of the set that statistically minimizes a utility function; determination, by each D2D terminal of subset, of a minimum power and a maximum throughput which minimize its utility metric; and determination, by the base station, of a D2D terminal among the D2D terminals of subset, of which the utility function applied to its minimum power and its maximum throughput is minimal, in order to allocate to the terminal spectral resources for transmission during the transmission interval.

Abstract: The present specification relates to a method for transceiving uplink data (UL data) in a wireless communication system, the method performed by a user equipment (UE) comprising: receiving a first uplink grant (UL grant) from a base station; transmitting a first item of uplink data (UL data) to the base station on the basis of the first uplink grant; receiving, from the base station, a HARQ response to the first item of uplink data; and transmitting a second item of uplink data (UL data) to the base station, wherein the method further comprises a step of transceiving, with the base station, indication information indicating whether the second item of uplink data is HARQ data or non-HARQ data.

Abstract: A method for minimizing a time domain mean square error (MSE) of channel estimation (CE) includes estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels; estimating, by the processor, a noise variance of the RS channels; and determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE.

Abstract: An uplink communication method is disclosed, so that a network device can control an uplink communication latency, reliability, and uplink transmit power in an uplink grant free communication scenario. The method includes: obtaining, by a terminal device, a first control channel, where the first control channel carries a control information group, the control information group includes a plurality of pieces of control information, and the plurality of pieces of control information correspond to a plurality of uplink channels; obtaining, by the terminal device, first control information from the first control channel, where the first control information is control information corresponding to a first uplink channel in the plurality of uplink channels; and performing, by the terminal device, uplink communication with a network device based on the first control information.

Abstract: Various communication systems may benefit from appropriate designation of communication mechanisms. For example, fifth generation communication systems may use refinement beam index beam identifier association. A method can include determining, by an access node, an association between at least one reported refinement beam index and at least one logical beam index based on reception of a refinement beam index report. The method can also include providing the association to a user equipment.

Abstract: A user terminal (20) is provided with: a reception unit (202) which receives a downlink signal containing a demodulation reference signal; a control unit (203) which separates the demodulation reference signal from the downlink signal; and a channel estimation unit (204) which calculates a channel estimation value using the demodulation reference signal. The demodulation reference signal is mapped to a resource element defined for a transmission pattern for a user terminal, and the transmission pattern for a user terminal is selected from among a plurality of transmission patterns for user terminals, so as to be different among the user terminals, and the demodulation reference signals to be mapped to the respective resource elements defined for the plurality of user terminal transmission patterns are configured to be mutually orthogonal to one another among the different user terminal transmission patterns.

Abstract: The present invention provides an apparatus of transmitting broadcast signals, the apparatus including, an encoder for encoding service data, a frame builder for building at least one signal frame by mapping the encoded service data, a modulator for modulating data in the built at lease one signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, scheme and a transmitter for transmitting the broadcast signals having the modulated data.

Abstract: Embodiments of the present disclosure describe methods and apparatuses for group based beam reporting and channel state information reference signal configuration in new radio systems.

Abstract: Examples described herein provide enhanced client grouping by a network device. Examples include determining that a plurality of client devices each comprising a plurality of receiver antennas are associated with a network device, and grouping the client devices into one or more groups, wherein each group comprises a number of client devices less than or equal to the number of transmitter antennas of the network device. Examples include, for each group, assigning one spatial stream to one receiver antenna for each client device of the group, and based on a determination that the number of client devices of the group is greater than one and less than the number of transmitter antennas, assigning one spatial stream to each of a portion of the remaining receiver antennas of the group, wherein at least one receiver antenna of the group is not assigned a spatial stream.

Abstract: Aspects described herein relate to determining multiple waveforms for transmitting wireless communications. A control waveform can be determined for transmitting a control information transmission related to a data transmission as one of multiple waveforms. A data waveform can be determined for transmitting the data transmission as one of the multiple waveforms. The control information transmission can be transmitted based on the control waveform, and the data transmission can be transmitted based on the data waveform.

Abstract: A method, network device and terminal device for transmitting data are provided. The method includes: a network device determines a numerology for transmitting data, and determines a target frequency band for transmitting the data, the target frequency band including a transmission frequency band for transmitting the data and a guard tone; the network device sends configuration information to the terminal device, the configuration information including the numerology and information of the target frequency band; the network device receives the data sent by the terminal device or sends the data to the terminal device on the transmission frequency band according to the numerology.

Abstract: The invention relates to a method for selecting candidate energy storage cells for balancing of an electrical energy storage pack (1) comprising a plurality of energy storage cells (3). The method comprises calculating (S212) a probability that a balancing action on the selected group of cells results in that at least one of the future state of charge is lower than a lower threshold present state of charge or higher than a higher threshold present state of charge, the probability being indicative of superfluous leakage or overcharging. The probability is based on the future state of charge for each of the cells and on the statistical inaccuracy. If the probability is indicative of that superfluous leakage or overcharging is unlikely to occur, selecting (S214, S214?) the group of cells as candidates for a balancing action. The invention further relates to a corresponding system and to a vehicle.

Abstract: The present disclosure discloses a method and device for wireless communication in a user equipment and base station. The user equipment receives first information and sends first radio signal. The first radio signal carries a first bit block, the first bit block being used to determine R, L first vectors and R second type parameter group(s); the R is used to determine the L from P candidate integers; the first information is used to determine the P candidate integers; each second type parameter group of the R second type parameter group(s) comprises L2 second type parameters, the L2 being equal to the L multiplied by 2; R3 second type parameter group(s) in the R second type parameter group(s) is(are) respectively used with the L first vectors to generate R3 merge vector(s); the P is a positive integer greater than 1; the R (greater than R3) and R3 are positive integers.

Abstract: A method for electromagnetic imaging of containers receives uncalibrated first data corresponding to signals of a first plurality of different frequencies associated with an antenna array residing in a container having contents. The method estimates of a second data based on a computer model and simulation of signals of a second plurality of different frequencies associated with the antenna array, the second plurality of different frequencies including a subset of the first plurality of different frequencies. The method compares magnitudes, without corresponding phase comparisons, of the first and second data at each frequency of the second plurality of different frequencies. The method updates the second data based on the comparing. The method provides information about the contents within the container based on the updated second data.

Abstract: A receiver apparatus comprises circuitry configured for storing a first sequence of values. At the receiver apparatus, a communications signal is received which conveys a second sequence of values, the second sequence of values being related to the first sequence of values. According to some examples, the second sequence of values is identical to the first sequence of values. At the receiver apparatus, P results are calculated from a cross-correlation of the first sequence of values with at least a portion of a representation of the communications signal, where P is a positive integer. According to some examples, P?2. An estimate of a phase offset of a continuous clock is calculated as a function of the P results. According to some examples, the function is a non-linear function. The estimate of the clock phase offset may be used to achieve clock recovery at the receiver apparatus.

Abstract: An apparatus and method for transmitting broadcast signal to which channel bonding is applied are disclosed. The apparatus according to the present invention includes an input formatting unit configured to generate baseband packets corresponding to a plurality of packet types using data corresponding to a physical layer pipe; a stream partitioner configured to partition the baseband packets into a plurality of partitioned streams corresponding to the plurality of packet types; BICM units configured to perform error correction encoding, interleaving and modulation corresponding to the plurality of partitioned streams, respectively; and waveform generators configured to generate RF transmission signals corresponding to the plurality of partitioned streams, respectively.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, based at least in part on a decomposition rule for a discrete Fourier transform (DFT) block, a plurality of decomposition groups for tones, corresponding to a plurality of antenna ports of the UE, of a transmission. The UE may map the tones to the plurality of decomposition groups for transmission processing, and transmit, using the plurality of antenna ports, the transmission based at least in part on transmission processing. Numerous other aspects are provided.

Abstract: An apparatus is configured to be employed within a base station. The apparatus comprises baseband circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to arrange phase tracking reference signal (PT-RS) resource elements (REs) and data REs as an arrangement for a transmission based on one or more diversity factors. The one or more diversity factors include a time domain and a frequency domain. The one or more processors are also configured to provide the transmission having the PT-RS REs to the RF interface for transmission to a user equipment (UE) device.

Abstract: Wireless communications systems and methods related to communicating in a frequency spectrum using interlaced frequency channels and non-interlaced frequency channels are provided. A first wireless communication device selects a waveform structure between an interlaced frequency structure and a non-interlaced frequency structure for communicating in a frequency spectrum. The first wireless communication device communicates, with a second wireless communication device in the frequency spectrum, a communication signal based on the selected waveform structure. The interlaced frequency structure includes at least a first set of frequency bands in the frequency spectrum, the first set of frequency bands interlacing with a second set of frequency bands in the frequency spectrum. The non-interlaced frequency structure includes one or more contiguous frequency bands in the frequency spectrum.

Abstract: A method for transmission of control data to a user equipment in a mobile telecommunication system, wherein the method comprises sending control data to the user equipment in a data transmission, and performing, by the user equipment, a blind decoding of transmission elements within the data transmission in order to detect the control data in a data region in the data transmission.

Abstract: Provided are a signal transmission method and system, which relates to wireless communications. The method includes: transmitting, by a first node, a first signal. The first signal comprises at least one of: at least one first structure, or at least one second structure. The first structure includes at least one symbol group, and the symbol group of the first structure includes a cyclic prefix and at least one symbol or includes a cyclic prefix, at least one symbol and a guard period. Each symbol group of the first structure occupies a same subcarrier or a same frequency resource in a frequency domain. The second structure includes at least one symbol group, and the symbol group of the second structure comprises a cyclic prefix and at least one symbol or includes a cyclic prefix, at least one symbol and a guard period. Each symbol group of the second structure occupies a same subcarrier or a same frequency resource in the frequency domain.

Abstract: For example, a wireless station may be configured to modulate a plurality of data bit sequences into a plurality of data blocks according to a dual carrier modulation, to map the plurality of data blocks to a plurality of spatial streams according to a space-time diversity scheme, and to transmit a MIMO transmission based on the plurality of spatial streams.

Abstract: A user equipment (UE) for discontinuous reception (DRX) operation having a Downlink DRX Hybrid Automatic Repeat reQuest (HARQ) Round-Trip Time Timer (drx-HARQ-RTT-TimerDL) is disclosed. The UE comprises one or more non-transitory computer-readable media having computer-executable instructions embodied thereon; at least one processor coupled to the one or more non-transitory computer-readable media, and configured to execute the computer-executable instructions to perform the DRX operation, wherein the DRX operation comprises: starting the drx-HARQ-RTT-TimerDL from an initial value in a first symbol after an end of a corresponding transmission carrying a DL HARQ feedback, the DL HARQ feedback corresponding to downlink data. The initial value is represented in number of symbols of a BWP (bandwidth part) where the downlink data is received.

Abstract: Various features related to eMTC-U deployment are described. In an aspect of the disclosure, an apparatus (e.g., a base station) maybe configured to select a subset of non-anchor channels from a set of available non-anchor channels, where the subset of non-anchor channels may correspond to a bandwidth within an unlicensed band. The apparatus maybe further configured to transmit information indicating the subset of non-anchor channels via an anchor channel. In some configurations, the subset of non-anchor channels maybe selected based on channel measurements performed by the base station or a UE. In one aspect, a UE may receive, from a base station via an anchor channel, information indicating a subset of non-anchor channels selected from a set of available non-anchor channels. The UE may transmit data on one or more non-anchor channel of the subset of non-anchor channels.

Abstract: A method and apparatus is provided for determining, by a receiving end, a correction time value according to ranging access in a wireless communication system. A reception apparatus in a wireless communication system comprises a signal period selector for selecting a first detection time interval and a second detection time interval from a RACH signal for ranging access, the RACH signal including a RACH preamble sequence, a time offset detector for detecting a first time offset and a second time offset, each corresponding to a point of time when the preamble sequence is received, from the selected first detection time interval and the second detection time interval, respectively, and a time offset determiner for determining a correction time value for correcting a point of time when data is transmitted by a transmitting end in the wireless communication system, on the basis of the detected first time offset and the second time offset.