Patent application number | Description | Published |
20090125781 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN A COMMUNICATION SYSTEM USING LOW DENSITY PARITY CHECK CODE - A method for transmitting data in a communication system using a Low Density Parity Check (LDPC) matrix includes generating an LDPC codeword by encoding information data bits, interleaving the LDPC codeword, mapping the interleaved LDPC codeword to a modulation signal, and generating a mapped signal by mapping the LDPC codeword bits separately to a bit corresponding to a real part and a bit corresponding to an imaginary part of said modulation signal, among bits constituting the modulation signal, generating a modulation signal by high-order-modulating the mapped signal and Radio Frequency (RF)-processing the modulation signal, and transmitting the RF-processed signal via a transmission antenna. | 05-14-2009 |
20090210767 | APPARATUS AND METHOD FOR ENCODING AND DECODING CHANNEL IN A COMMUNICATION SYSTEM USING LOW-DENSITY PARITY-CHECK CODES - An apparatus and method for generating a parity-check matrix of a Low-Density Parity-Check (LDPC) code are provided. Parameters for designing the LDPC code are determined, and a first parity-check matrix of a quasi-cyclic LDPC code is formed according to the determined parameters. A second parity-check matrix is created through the elimination of a predetermined portion of a parity part in the first parity-check matrix, and a third parity-check matrix is created by rearranging the second parity-check matrix. | 08-20-2009 |
20090217129 | METHOD AND APPARATUS FOR CHANNEL ENCODING AND DECODING IN A COMMUNICATION SYSTEM USING LOW-DENSITY-PARITY-CHECK CODES - A method and apparatus for encoding and decoding a channel in a communication system using a Low-Density Parity-Check (LDPC) code. The encoding method includes determining a modulation scheme for transmitting a symbol; determining a shortening pattern in consideration of the determined modulation scheme; grouping columns corresponding to an information word in a parity-check matrix of the LDPC code into a plurality of column groups; ordering the column groups; determining a range of a resulting information word desired to be obtained by shortening the information word; based on the range of the resulting information word, performing column group-by-column group shortening on the ordered column groups of the information word, according to the determined shortening pattern; and LDPC-encoding the shortened information word. | 08-27-2009 |
20110107173 | APPARATUS AND METHOD FOR GENERATING A PARITY CHECK MATRIX IN A COMMUNICATION SYSTEM USING LINEAR BLOCK CODES, AND A TRANSMISSION/RECEPTION APPARATUS AND METHOD USING THE SAME - A method and apparatus are provided for generating a parity check matrix used to generate a linear block code in a communication system. The method includes determining a basic parameter of a second parity check matrix satisfying a rule predetermined with respect to a given first parity check matrix, generating a submatrix corresponding to a parity part of the second parity check matrix, using the basic parameter; and generating a submatrix corresponding to an information word part of the second parity check matrix, using the first parity check matrix and the basic parameter. | 05-05-2011 |
20110119568 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A COMMUNICATION SYSTEM - A method is provided for transmitting data, which improves a diversity effect in a communication system. The method includes transmitting an information word including a codeword in a (k+s)-th frame, generating s groups based on parity bits obtained by encoding the information word, and transmitting the s groups in s frames preceding the (k+s)-th frame, in a distributed manner. | 05-19-2011 |
20110138262 | METHOD AND APPARATUS FOR CHANNEL ENCODING AND DECODING IN A COMMUNICATION SYSTEM USING A LOW-DENSITY PARITY CHECK CODE - A method is provided for channel encoding in a communication system using a Low-Density Parity Check (LDPC) code. The method includes grouping information bits into a plurality of groups; determining an order of the plurality of groups to be shortened, based on a ratio of a number of bits to be shortened to a number of bits to be punctured; determining a length of an information word to be obtained by shortening the plurality of groups; shortening the plurality of groups on a group basis in the determined order based on the determined length of the information word; and LDPC-encoding a shortened information word. | 06-09-2011 |
20110241911 | APPARATUS AND METHOD FOR CHANNEL ENCODING IN A COMMUNICATION/BROADCASTING SYSTEM - An encoding apparatus and method in a communication/broadcasting system are provided. When an encoding symbol is generated using at least one source symbol from among total source symbols to be encoded, encoding symbols are generated by using each of the total source symbols with a uniform probability before repeatedly using any of the total source symbols. | 10-06-2011 |
20110274202 | APPARATUS AND METHOD FOR CHANNEL CODING IN A COMMUNICATION SYSTEM - A method for channel coding by a transmitter in a communication system is provided. The method includes determining a degree of coded bits of a Luby-Transform (LT) code based on a coding rate of a pre-code and the number of coded bits of the LT code, selecting at least one associated bit used for coding of the coded bits of the LT code from among information bits of the LT code, depending on the determined degree, and generating the coded bits of the LT code by applying a coding function to the selected associated bits. | 11-10-2011 |
20110276855 | METHOD AND APPARATUS FOR CHANNEL CODING AND DECODING IN A COMMUNICATION SYSTEM USING A LOW-DENSITY PARITY-CHECK CODE - A channel coding method in a communication system using a Low-Density Parity-Check (LDPC) code. The channel coding method includes determining a degree distribution for a plurality of column groups of an information part and a plurality of column groups of a parity part; determining degrees for the plurality of column groups of the information part based on the degree distribution; determining a shortening order based on the degrees for the plurality of column groups of the information part; generating a parity check matrix based on the shortening order; and performing coding using the generated parity check matrix. | 11-10-2011 |
20110280351 | APPARATUS AND METHOD FOR COMPENSATING FOR PHASE NOISE IN A RECEIVER SUPPORTING OFDM - An apparatus and method for compensating for phase noise in a receiver supporting Orthogonal Frequency Division Multiplexing (OFDM) by receiving a frequency-domain recovered signal and a time-domain received signal, estimating an average phase noise for each of the partial blocks of the signals, calculating an overall average phase noise using the average phase noises of the partial blocks, and removing the phase noise from the time-domain received signal using the calculated total average phase noise. | 11-17-2011 |
20110283158 | APPARATUS AND METHOD FOR LAYERED DECODING IN A COMMUNICATION SYSTEM USING LOW-DENSITY PARITY-CHECK CODES - A channel decoding apparatus and method in a communication system using Low-Density Parity-Check (LDPC) codes are provided in which an encoded signal is received from a transmitter and decoded using a parity-check matrix. At least one of input orders and output orders of the parity-check matrix are determined so that same values are not overlapped in a column direction between the at least one of the input orders and the output orders. | 11-17-2011 |
20120166905 | METHOD AND APPARATUS FOR CONTROLLING DECODING IN RECEIVER - Methods and apparatus are provided for controlling decoding in a receiver. A codeword is received and decoded. It is determined whether the decoding is a decoding success or a decoding failure. A number of unreliable bits of the codeword is determined when the decoding is the decoding failure. Iterative decoding is performed when the number of unreliable bits is less than a first threshold value. | 06-28-2012 |
20120173948 | APPARATUS AND METHOD FOR CHANNEL ENCODING AND DECODING BASED ON LOW-DENSITY PARITY CHECK CODE IN MULTIPLE ANTENNA COMMUNICATION SYSTEM - Methods and apparatuses are provided for achieving maximum diversity gain through channel coding based on a Low-Density Parity-Check (LDPC) code in a multiple antenna communication system. A method includes determining a parity-check matrix; generating a codeword using the parity-check matrix; puncturing a part of an information word; dividing a parity into a plurality of partial parities based on a number of transmit antennas; transmitting an unpunctured part of the information word and a partial parity over a first antenna; and transmitting at least one other partial parity over at least one other transmit antenna. | 07-05-2012 |
20120185757 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN COMMUNICATION/BROADCASTING SYSTEM - An apparatus and method for transmitting and receiving data in a wireless communication is provided. The method includes determining a number of zero-padding bits, determining a number (N | 07-19-2012 |
20120198306 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING IN COMMUNICATION/BROADCASTING SYSTEM - An apparatus and method are provided for transmitting and receiving in a communication/broadcasting system. The method includes generating a codeword including a first parity bit using a first parity-check matrix, generating an additional parity bit based on a second parity-check matrix, the second parity-check matrix being an extension of the first parity-check matrix, and transmitting the codeword and the additional parity bit. | 08-02-2012 |
20120216099 | METHOD AND APPARATUS FOR TRANSMITTING SIGNALING INFORMATION IN DIGITAL BROADCASTING SYSTEM - A method and an apparatus for are provided. In a method for transmitting signaling information in a digital broadcasting system, a transmitter transmits signaling information, and an information bit stream is received. The received information bit stream is encoded and a parity bit is added. The parity bit is punctured such that parity bits of different patterns are formed between adjacent frames. | 08-23-2012 |
20120224517 | APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO (PAPR) IN BROADCASTING COMMUNICATION SYSTEM - An apparatus and a method are provided for reducing a Peak to Average Power Ratio (PAPR) in a broadcasting communication system, which provides a broadcasting service by dividing a broadcasting band into at least two channel bands. At least one primary reservation tone is injected into broadcasting signals of each of the channel bands. An integrated broadcasting signal of the broadcasting band is generated by combining the broadcasting signals of the channel bands. At least one secondary reservation tone is injected into the integrated broadcasting signal of the broadcasting band and the integrated broadcasting signal is transmitted. | 09-06-2012 |
20120224608 | APPARATUS AND METHOD FOR PROVIDING FREQUENCY HOPPING SCHEME IN BROADCAST COMMUNICATION SYSTEM - An apparatus and a method for using a frequency hopping scheme in a broadcast communication system are provided. A method for transmitting a broadcast signal via at least two frequency bands by a transmission end device in the broadcast communication system includes determining a frequency hopping pattern for providing a broadcast service and transmitting the same; transmitting control information via a first frame after a frequency is changed according to the frequency hopping pattern; and transmitting broadcast data for the broadcast service via a frame transmitted after the first frame. | 09-06-2012 |
20120243600 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A BROADCASTING/COMMUNICATION SYSTEM - A method and an apparatus for encoding, transmitting, and receiving signaling information in a broadcasting/communication system are provided. The method includes generating the signaling information which comprises a plurality of pieces; determining a number of coded blocks to which the signaling information is to be encoded, based on a number of bits of the signaling information and a number of encoder input information bit; segmenting each piece of the signaling information based on the number of the coded blocks; constructing input information bits of each coded block to include segmented parts of each piece of the signaling information; encoding the input information bits to each coded block; and transmitting each coded block. | 09-27-2012 |
20120254683 | APPARATUS AND METHOD FOR MAPPING AND DEMAPPING SIGNALS IN A COMMUNICATION SYSTEM USING A LOW DENSITY PARITY CHECK CODE - An apparatus and method for mapping and demapping signals in a system using a Low Density Parity Check (LDPC) code are provided. In the method, LDPC codeword bits are written column-wise and read row-wise, substreams are generated by demultiplexing the read bits using a demultiplexing scheme, and bits included in each of the substreams are mapped to symbols on a signal constellation. The demultiplexing scheme is determined corresponding to a modulation scheme used in the signal transmitter, a length of the LDPC codeword, and a number of the substreams. | 10-04-2012 |
20120290887 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN COMMUNICATION SYSTEM - An apparatus and a method for transmitting and receiving a signal in a communication system are provided. The method includes checking a type of the signal to be transmitted; determining a number of puncture bits according to the type of the signal; and puncturing an encoded signal to be transmitted according to the number of puncture bits. | 11-15-2012 |
20120307846 | DIGITAL BROADCAST TRANSMITTER AND DIGITAL BROADCAST RECEIVER, AND METHOD FOR PROCESSING STREAMS THEREOF - Provided is a digital broadcast transmitter including a MUX and an exciter, which construct streams including first service data and second service data that are different from each other. The exciter interleaves streams such that the first service data has a first body, a first head, and a first tail, the second service data has a second body, a second head, and a second tail, and the first head or the first tail is engaged with the second head or the second tail, at the interface between the first service data and the second service data, wherein at least a portion of the second service data is LDPC-coded or turbo-coded, and the rest of the second service data is TCM-coded. | 12-06-2012 |
20120317461 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING PACKET IN BROADCASTING AND COMMUNICATION SYSTEM - A method and an apparatus for transmitting and receiving a packet in a broadcasting and communication system are provided. The method and apparatus allows a receiver to recognize data in a packet lost due to data loss occurring in a network. To this end, Forward Error Correction (FEC) control-related information is generated, a packet including the generated FEC control-related information is generated, and the packet is transmitted. The FEC control-related information includes at least one of FEC configuration-related information and FEC encoding configuration-related information. | 12-13-2012 |
20130013982 | METHOD FOR GENERATING FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA SYSTEM AND METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FORWARD ERROR CORRECTION PACKET - A method and apparatus for transmitting a Forward Error Correction (FEC) packet block including a plurality of FEC packets in a multimedia system are provided. The method includes generating a plurality of first FEC packet blocks by performing a first FEC encoding on a plurality of source symbols, each of the plurality of first FEC packet blocks including at least one source packet and at least one repair packet for repair of each of the at least one source packet, generating a second FEC packet block by performing a second FEC encoding on the plurality of first FEC packet blocks, the second FEC packet block including at least one repair packet for the plurality of first FEC packet blocks, and transmitting the second FEC packet block that includes, in header information of each of the at least one source packet and the at least one repair packet. | 01-10-2013 |
20130097470 | ENCODING APPARATUS AND ENCODING METHOD IN DATA COMMUNICATION SYSTEM - An encoding method and apparatus in a data communication system are provided. The method includes inputting a source block including a plurality of source payloads, converting the source block to an information block including a plurality of information payloads according to an Information Block Generation (IBG) mode selected from a plurality of IBG modes, transmitting a delivery block generated by adding a parity block generated by encoding the information block according to a selected encoding scheme to the source block to a receiver, and transmitting information indicating the selected IBG mode to the receiver. | 04-18-2013 |
20130097474 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING FORWARD ERROR CORRECTION PACKET IN MOBILE COMMUNICATION SYSTEM - An apparatus and method for transmitting/receiving a Forward Error Correction (FEC) packet in a mobile communication system are provided. In the FEC packet transmission method, an FEC packet transmission apparatus transmits an FEC delivery block to an FEC packet reception apparatus, wherein the FEC delivery block includes K source payloads and P parity payloads, each of the K source payloads and the P parity payloads includes a payload header, and each of the payload headers includes length information related to a length of a related payload. | 04-18-2013 |
20130117638 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AN APPLICATION LAYER-FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA COMMUNICATION SYSTEM - An apparatus and method for transmitting and receiving an Application Layer-Forward Error Correction (AL-FEC) packet in a multimedia communication system are provided. In the AL-FEC packet transmission method, an AL-FEC packet transmission apparatus generates AL-FEC packets, and transmits the AL-FEC packets to an AL-FEC packet reception apparatus, wherein each of the AL-FEC packets includes an AL-FEC codeword symbol and an AL-FEC header, the AL-FEC codeword symbol is one of AL-FEC codeword symbols included in an AL-FEC codeword block, and the AL-FEC header includes order information indicating an order of an AL-FEC codeword symbol into which the AL-FEC header is inserted among the AL-FEC codeword symbols included in the AL-FEC codeword block. | 05-09-2013 |
20130124938 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING A QUASI-CYCLIC LOW DENSITY PARITY CHECK CODE IN A MULTIMEDIA COMMUNICATION SYSTEM - An apparatus and method are provided for transmitting and receiving a quasi-cyclic Low Density Parity Check (LDPC) code in a multimedia communication system. In the method, a signal transmission apparatus generates a quasi-cyclic LDPC code, and transmits the quasi-cyclic LDPC code to a signal reception apparatus. The quasi-cyclic LDPC code is generated by encoding an information word vector using a child parity check matrix, generated by performing one of a scaling operation, a row separation operation, and a row merge operation on a parent parity check matrix. In the scaling operation, a size of the child parity check matrix is determined. In the row separation operation, each of rows included in the parent parity check matrix is separated. In the row merge operation, the rows included in the parent parity check matrix are merged. | 05-16-2013 |
20130136193 | APPARATUS AND METHOD OF TRANSMITTING/RECEIVING BROADCAST DATA - An encoding apparatus and a method of encoding a source block including different types of data payloads are provided. The method includes dividing the source block into a predetermined number M of sub blocks, generating a predetermined number P | 05-30-2013 |
20130290814 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PACKET IN A COMMUNICATION SYSTEM - A method for transmitting a packet in a communication system is provided. The method includes dividing a data stream into data payloads of a predetermined size and adding a common header to each of the data payloads, to generate a source payload, adding a first Forward Error Correction (FEC) payload Identifier (ID) to the source payload and applying an FEC code thereto, to generate an FEC source packet for a source payload, adding a second FEC payload ID to at least one parity payload and applying an FEC code thereto, to generate an FEC parity packet for the at least one parity payload, and transmitting the FEC source packet and the FEC parity packet. | 10-31-2013 |
20130294447 | APPARATUS AND METHOD OF TRANSMITTING AND RECEIVING PACKET IN A BROADCASTING AND COMMUNICATION SYSTEM - A method and apparatus of transmitting/receiving a packet in a system are provided. The method includes dividing each symbol corresponding to each row of a two-dimensional array having a predetermined symbol size (T) as a width into a predetermined number (m) of regions, sequentially arranging source packets to be transmitted, starting from a first column of a first row of the two-dimensional array, setting a remaining part of a region in which last data of a source packet is allocated in a last row in which the source packet is arranged to a predetermined value, arranging a next source packet, starting from a starting point of a region next to the region in which the last data is allocated in the last row in which the source packet is arranged, constructing a source block by arranging all of the source packets in the two-dimensional array, FEC-encoding the source block, and transmitting the FEC-encoded source block. | 11-07-2013 |
20140019829 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING PACKET IN BROADCASTING AND COMMUNICATION SYSTEM - A method for transmitting a packet by a signal transmission apparatus in a broadcasting and communication system is provided. The method includes generating a Forward Error Correction (FEC) packet including an FEC parity packet and an FEC source packet by encoding source payloads using an FEC encoding scheme, and transmitting the FEC packet to a signal reception apparatus, wherein the FEC parity packet is generated using a plurality of Source Sub-Blocks (SSBs) which are generated using specific source payloads selected corresponding to a preset SSB generation scheme from among the source payloads included in a source block, and wherein the FEC source packet is generated using the source payloads. | 01-16-2014 |
20140101521 | METHOD AND APPARATUS FOR DECODING RECEIVED PACKETS IN BROADCASTING AND COMMUNICATION SYSTEM - A method and apparatus for decoding received packets in a broadcasting and communication system is provided. The method includes reconstructing a source block by arranging source packets received from a sender on a two-dimensional array having a width of a given symbol size, and determining at least one Erased Subdivided Encoding Symbol Index (E-SESI) corresponding to at least one source packet which is not successfully received in the reconstructed source block, determining a symbol unit for Forward Error Correction (FEC) decoding based on the at least one E-SESI, and performing FEC decoding on the reconstructed source block depending on the determined symbol unit. | 04-10-2014 |
20140105310 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING PACKET IN A BROADCASTING AND COMMUNICATION SYSTEM - A method of transmitting a complex content packet in a broadcasting and communication system is provided. The method includes creating an Forward Error Correction (FEC) source block by using at least one MMT Processing Unit (MPU) included in at least one MPEG Media Transport (MMT) asset, and transmitting the FEC source block, wherein the FEC source block is generated so that a boundary of the at least one MPU and a boundary of the FEC source block do not deviate. | 04-17-2014 |
20140122961 | METHOD AND APPARATUS FOR CHANNEL CODING AND DECODING IN A COMMUNICATION SYSTEM USING A LOW-DENSITY PARITY-CHECK CODE - An apparatus and method are provided for channel coding in a communication system using a Low-Density Parity-Check (LDPC) code. The method includes determining degrees for each of a plurality of column groups of an information part; determining a shortening order based on the degrees; generating a parity check matrix based on the shortening order; and performing coding using the parity check matrix. | 05-01-2014 |
20140143640 | METHOD AND APPARATUS FOR CHANNEL ENCODING AND DECODING IN ACOMMUNICATION SYSTEM USING A LOW-DENSITY PARITY CHECK CODE - A method is provided for channel encoding in a communication system using a Low-Density Parity Check (LDPC) code. The method includes grouping information bits into a plurality of groups; determining an order of the plurality of groups to be shortened, based on whether a specific region in a frame is to be LDPC-encoded, where the specific region has a different ratio of a number of bits to be shortened to a number of bits to be punctured; determining a length of an information word to be obtained by shortening the plurality of groups; shortening the plurality of groups on a group basis in the determined order based on the determined length of the information word; and LDPC-encoding a shortened information word. | 05-22-2014 |
20140185706 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A COMMUNICATION SYSTEM - Methods and apparatus are provided for transmitting and receiving encoded data. A codeword is generated by encoding an information word. Some parity bits are punctured in the generated codeword. A frame including the punctured codeword is transmitted. Additional parity bits for decoding the information word are transmitted in one or more other frames. | 07-03-2014 |
20140310579 | METHOD FOR GENERATING FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA SYSTEM AND METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FORWARD ERROR CORRECTION PACKET - A method and apparatus for transmitting a Forward Error Correction (FEC) packet block including a plurality of FEC packets in a multimedia system are provided. The method includes generating a plurality of first FEC packet blocks by performing a first FEC encoding on a plurality of source symbols, each of the plurality of first FEC packet blocks including at least one source packet and at least one repair packet for repair of each of the at least one source packet, generating a second FEC packet block by performing a second FEC encoding on the plurality of first FEC packet blocks, the second FEC packet block including at least one repair packet for the plurality of first FEC packet blocks, and transmitting the second FEC packet block that includes, in header information of each of the at least one source packet and the at least one repair packet. | 10-16-2014 |
20140314157 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PACKET IN A COMMUNICATION SYSTEM - A method for encoding a packet in a broadcasting system supporting an Internet Protocol (IP)-based multimedia service is provided. The method includes dividing a data stream into data payloads, generating a Motion Picture Expert Group (MPEG) Media Transport (MMT) packet by adding a first header to each of the data payloads, and generating a source packet by adding an MMT packet header to the MMT packet and performing Forward Error Correction (FEC) encoding on the header-added MMT packet. The MMT packet header includes type information of the MMT packet. | 10-23-2014 |
20140314158 | DEVICE AND METHOD FOR TRANSMITTING/RECEIVING A PACKET IN COMMUNICATION SYSTEM - The present invention relates to a device and method for transmitting/receiving a packet in a communication system. The present invention includes: the processes of determining at least one MPEG media transport (MMT) asset protected by an application layer forward error correction (AL-FEC); determining at least one FEC flow for transmitting the at least one MMT asset; determining the MMT asset transmitted from the at least one FEC flow in each case and determining an FEC coding structure to apply to the at least one FEC flow; producing at least one source flow by dividing the MMT asset transmitted from the at least one FEC flow on a transmission unit basis; and producing and transmitting at least one parity flow by performing AL-FEC encoding on the at least one source flow according to the FEC coding structure. | 10-23-2014 |
20140317476 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING FORWARD ERROR CORRECTION PACKET - A method and an apparatus for transmitting and receiving a packet in a broadcasting and communication system are provided. The method includes splitting a source packet block including source packets into a plurality of source packet subblocks, converting the source packet subblocks to source symbol subblocks, respectively, generating a plurality of first repair symbol blocks by encoding the source packet subblocks using a first error correction code, configuring an error correction source packet by adding a source error correction payload IDentifier (ID) to source symbols included in the source symbol subblocks and configuring an error correction repair packet by adding a repair error correction payload ID to repair symbols included in the first repair symbol subblocks, and transmitting the error correction source packet and the error correction repair packet. | 10-23-2014 |
20140359392 | METHOD AND APPARATUS FOR PROVIDING STREAMING SERVICE - A method for encoding streaming data according to one embodiment of the present invention comprises: a step of dividing a forward error correction (FEC) source block into one or more FEC sub-blocks; a first encoding step of FEC encoding said one or more FEC sub-blocks; a second encoding step of encoding said FEC source block; and a step of generating third encoded data including first encoded data encoded in the first encoding step and second encoded data encoded in the second encoding step. According to one embodiment of the present invention, a streaming service can be smoothly provided to multiple users in various environments or in a communication environment that varies according to movement or changes in a communication state. Further, a plurality of pieces of parity information can be transmitted to provide a streaming service which is capable of high reliability data recovery. | 12-04-2014 |
20140375890 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS AND CONTROL METHOD THEREOF - A transmitting apparatus is provided. The transmitting apparatus includes: a frame generator configured to generate a first frame provided for a fixed terminal and a second frame provided for a mobile terminal, the second frame including common service data commonly provided for the fixed terminal and the mobile terminal; an information inserting unit configured to insert access information on the common service data into a signaling area of the first frame; and a transmitter configured to transmit the first and second frames. | 12-25-2014 |
20140376552 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PACKET IN BROADCASTING SYSTEM - A method and an apparatus for transmitting and receiving packets in a broadcasting system are provided. The present disclosure allocates a padding size field by using padding octets, and thus can increase transmission efficiency. Also, the present disclosure does not restrict the number of padding octets while maintaining compatibility with existing disclosures, and thus can carry out as much padding as desired and as necessary. In addition, the present disclosure variably allocates the padding size field depending on the number P of padding octets, and thus can increase header efficiency. Furthermore, since the number of padded octets in a header is immediately known, the size of an actual payload is known in advance, and thus rapid transmission is possible. | 12-25-2014 |
20150022719 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS, AND SIGNAL PROCESSING METHOD THEREOF - Provided are a transmitting apparatus, a receiving apparatus and methods of transmitting and receiving a data frame. The transmitting apparatus includes: a frame generator configured to cluster a predetermined number of frames to generate a frame cluster, at least one of the frames being generated by mapping data contained in an input stream to at least one signal processing path; an information inserter configured to insert signaling information into a signaling area of the at least one frame; and a transmitter configured to transmit the frame with the signaling information inserted therein, wherein the signaling information comprises profile information and duration information about the frame included in the frame cluster. | 01-22-2015 |
20150023249 | TRANSMITTING APPARATUS, RECEIVING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A transmitting apparatus includes: a baseband packet generator configured to generate a baseband packet including a header and payload data corresponding to an input stream; a frame generator configured to generate a frame including the baseband packet; a signal processor configured to process the generated frame; and a transmitter configured to transmit the processed frame, wherein the header includes information about whether a number of null packets deleted when generating the baseband packet is more than a predetermined number, information about a number of packets within the baseband packet, and information about a number of the deleted null packets. | 01-22-2015 |
20150036689 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND CONTROLLING METHODS THEREOF - A transmitting apparatus is provided. The transmitting apparatus includes: a baseband packet (BBP) generator configured to generate a BBP including a header and payload data; a frame generator configured to generate a frame including the BBP; a signal processor configured to signal-process the generated frame; and a transmitter configured to transmit the signal-processed frame. The header includes information about a type of the payload data, whether an additional header exists, a length of the payload data, and a Least Significant Bit (LSB) of the length of the payload data. Therefore, various types of data are mapped on a physical layer based on information included in the header, and data processing efficiency is improved. | 02-05-2015 |
20150049773 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND DATA PROCESSING METHOD THEREOF - A data processing method of a transmitting apparatus includes generating a frame including at least one data packet, inserting, using the transmitting apparatus, a header including information associated with a data field occupied by the at least one data packet into the frame, and transmitting, to a receiving apparatus, the frame into which the header is inserted, wherein the information associated with the data field includes first information indicating whether a start byte of a first data packet is included in the data field and second information indicating whether an end byte of a last data packet is included in the data field. | 02-19-2015 |
20150063357 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND SIGNAL PROCESSING METHOD THEREOF - A transmitting apparatus, a receiving apparatus and methods of controlling these apparatuses are provided. The transmitting apparatus includes: a baseband packet generator configured to, based on an input stream including a first type stream and a second type stream, generate a baseband packet including a header and payload data corresponding to the first type stream; a frame generator configured to generate a frame including the baseband packet; a signal processor configured to perform signal-processing on the generated frame; and a transmitter configured to transmit the signal-processed frame, wherein the header includes a type of the payload data in the baseband packet and the number of the first type stream packets in the baseband packet. | 03-05-2015 |
20150063490 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A transmitting apparatus, a receiving apparatus and methods of transmission and reception are provided. The transmitting apparatus includes: a frame generator configured to map data contained in an input stream to at least one signal processing path to generate a frame; an information inserter configured to insert signaling information in a signaling region of the frame; and a transmitter configured to transmit the frame in which the signaling information is inserted, wherein the signaling information comprises information on an input type of each of the at least one input stream and information on a type of data which is mapped to the at least one signal processing path. | 03-05-2015 |
20150071373 | TRANSMITTING APPARATUS, RECEIVING APPARATUS AND CONTROL METHODS THEREOF - A transmitting apparatus, a receiving apparatus and a method of controlling these apparatus are provided. The transmitting apparatus includes: a frame generator configured to generate a plurality of frames which include one or more kinds of data; a preamble symbol inserter configured to insert at least one preamble symbol in each of the plurality of frames, and insert, in a preamble symbol of a frame, location information about at least one frame, among the plurality of frames, which includes a same kind of data as a kind of data included in the frame; and a transmitter configured to transmit the plurality of frames in each of which the preamble symbol is inserted. | 03-12-2015 |
20150092882 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND CONTROL METHODS THEREOF - A transmitting apparatus, a receiving apparatus and methods of controlling these apparatuses are provided. The transmitting apparatus includes: an input processor configured to process a plurality of input streams to generate a plurality of base band frames; a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the plurality of baseband frames; a symbol generator configured to add signaling data to the plurality of baseband frames output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction, insert a pilot in the OFDM symbol according to the selected pilot pattern, and transmit a stream including the pilot-inserted OFDM symbol. Thus, a data transmission rate is increased and accurate channel estimation is performed, through inserting different pilots according to different FFT sizes and guard interval fractions. | 04-02-2015 |
20150092883 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND METHOD OF CONTROLLING THE SAME - Provided are a transmitting apparatus, a receiving apparatus and methods of controlling the transmission and reception. The transmitting apparatus includes: a baseband packet generator configured to, in response to input of data, generate a baseband packet for mapping the data with a physical layer; a baseband frame generator configured to generate a baseband frame including the baseband packet; a signal processor configured to signal-process the baseband frame; and a transmitter configured to transmit the baseband frame after the signal processing, wherein the baseband packet includes signaling information which indicates that the data comprises at least one of base layer data and enhancement layer data. | 04-02-2015 |
20150095745 | TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND CONTROLS METHOD THEREOF - Provided are apparatuses and methods for generating and transmitting transmission frames of information data. A transmitting apparatus includes: a stream processor configured to generate a plurality of baseband frames; a frame generator configured to generate, from the plurality of baseband frames, a plurality of transmission frames which includes information data commonly provided to a fixed device and a mobile device, first parities to be used for signal processing at the fixed device, and second parities to be used for signal processing at the mobile device; and a transmitter configured to transmit the plurality of transmission frames. | 04-02-2015 |
20150095965 | SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A signal processing apparatus is provided. The signal processing apparatus includes: a packet classifier configured to receive a transport stream including a content, and classify a plurality of packets constituting the content into a plurality of packet groups according to a predetermined condition; and a transport unit configured to transport the plurality of packet groups through a plurality of signal processing routes to each of which a different signal processing method is applied. | 04-02-2015 |
20150113361 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING A QUASI-CYCLIC LOW DENSITY PARITY CHECK CODE IN A MULTIMEDIA COMMUNICATION SYSTEM - A method is provided for transmitting a Low Density Parity Check (LDPC) code by a signal transmission apparatus in a multimedia system. The method includes generating the LDPC code based on a resulting parity check matrix, which is generated by performing a scaling down operation on a base parity check matrix; and transmitting the LDPC code. The scaling down operation is performed based on a scaling factor for determining a size of each permutation matrix in the resulting parity check matrix and a size of each zero matrix included in the resulting parity check matrix, and the scaling factor is determined based on a number of column blocks included in the base parity check matrix and a size of each permutation matrix included in the base parity check matrix. | 04-23-2015 |
20150180609 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AN APPLICATION LAYER-FORWARD ERROR CORRECTION PACKET IN MULTIMEDIA COMMUNICATION SYSTEM - A method is provided for transmitting an Application Layer-Forward Error Correction (AL-FEC) packet by an AL-FEC packet transmission apparatus in a multimedia communication system. AL-FEC packets are generated. The AL-FEC packets are transmitted to an AL-FEC packet reception apparatus. Each of the AL-FEC packets includes an AL-FEC codeword symbol and an AL-FEC header, and the AL-FEC codeword symbol is one of AL-FEC codeword symbols included in an AL-FEC codeword block. The AL-FEC header includes order information indicating an order of an AL-FEC codeword symbol into which the AL-FEC header is inserted among the AL-FEC codeword symbols included in the AL-FEC codeword block. | 06-25-2015 |
20150180612 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A BROADCASTING/COMMUNICATION SYSTEM - A method and an apparatus for encoding, transmitting, and receiving signaling information in a broadcasting/communication system are provided. The method includes generating the signaling information which comprises a plurality of pieces; determining a number of coded blocks to which the signaling information is to be encoded, based on a number of bits of the signaling information and a number of encoder input information bit; segmenting each piece of the signaling information based on the number of the coded blocks; constructing input information bits of each coded block to include segmented parts of each piece of the signaling information; encoding the input information bits to each coded block; and transmitting each coded block. | 06-25-2015 |
20150280743 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING A QUASI-CYCLIC LOW DENSITY PARITY CHECK CODE IN A MULTIMEDIA COMMUNICATION SYSTEM - A method and apparatus are provided for transmitting an LDPC code in a multimedia system. The method includes generating an LDPC code based on a resulting parity check matrix which is generated by performing a row splitting operation on a base parity check matrix; and transmitting the LDPC code. The row splitting operation includes splitting each row block included in the base parity check matrix into row blocks, a number of the row blocks is determined based on a splitting factor, and the splitting factor is determined based on a number of repair symbols included in a repair symbol block of the base parity check matrix, a number of rows included in the base parity check matrix, and a scaling factor for determining a size of each permutation matrix in the resulting parity check matrix and a size of each zero matrix included in the resulting parity check matrix. | 10-01-2015 |
20150304691 | METHOD AND APPARATUS FOR PROVIDING INFORMATION RELATED TO CONTENT SUPPORTING BROADCAST SERVICE - A method for providing a broadcast service in a transmitting device is provided. The method includes classifying signaling information for contents provided by the broadcast service, based on a type of the information and a transmission network, and transmitting the classified signaling information. | 10-22-2015 |
20150333867 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PACKET IN A COMMUNICATION SYSTEM - A method for transmitting a packet in a communication system is provided. The method includes dividing a data stream into data payloads of a predetermined size and adding a common header to each of the data payloads, to generate a source payload, adding a first Forward Error Correction (FEC) payload Identifier (ID) to the source payload and applying an FEC code thereto, to generate an FEC source packet for a source payload, adding a second FEC payload ID to at least one parity payload and applying an FEC code thereto, to generate an FEC parity packet for the at least one parity payload, and transmitting the FEC source packet and the FEC parity packet. | 11-19-2015 |
20150372694 | METHOD AND APPARATUS FOR CHANNEL ENCODING AND DECODING IN A COMMUNICATION SYSTEM USING A LOW-DENSITY PARITY CHECK CODE - A method is provided for channel encoding in a communication system using a Low-Density Parity Check (LDPC) code. The method includes grouping information bits into a plurality of groups, determining an order of the plurality of groups to be shortened, according to a code rate, determining a length of information bits to be obtained by shortening the plurality of groups, shortening the plurality of groups on a group basis in the determined order, based on the determined length of the information bits, and LDPC-encoding shortened information bits. | 12-24-2015 |
20160028561 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A COMMUNICATION SYSTEM - Methods and apparatuses are provided for transmitting data. A codeword is generated by encoding an information word. Parity bits of the codeword are grouped into a plurality of groups. The parity bits are interleaved according to a predetermined order. One or more of the interleaved parity bits are punctured to generate a punctured codeword. A frame including a portion of the punctured codeword is transmitted. | 01-28-2016 |
20160072528 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING PACKET IN BROADCASTING AND COMMUNICATION SYSTEM - A method and an apparatus for transmitting and receiving a packet in a broadcasting and communication system are provided. The method and apparatus allows a receiver to recognize data in a packet lost due to data loss occurring in a network. To this end, Forward Error Correction (FEC) control-related information is generated, a packet including the generated FEC control-related information is generated, and the packet is transmitted. The FEC control-related information includes at least one of FEC configuration-related information and FEC encoding configuration-related information. | 03-10-2016 |
20160105259 | APPARATUS AND METHOD OF TRANSMITTING/RECEIVING BROADCAST DATA - An encoding apparatus and a method of encoding a source block including different types of data payloads are provided. The method includes dividing the source block into a predetermined number M of sub blocks, generating a predetermined number P1 of base parity payloads that correspond to each of the predetermined number M of sub blocks by performing first Forward Error Correction (FEC) encoding on each of the predetermined number M of sub blocks, generating a predetermined number P2 of extended parity payloads that correspond to the source block by performing second FEC encoding on a particular type of data payloads among data payloads that make up the source block, and configuring a source coded block based on a predetermined number N of sub coded blocks including the predetermined number M of sub blocks and the predetermined number P1 of base parity payloads generated. | 04-14-2016 |
20160127522 | TRANSMITTING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A transmitting apparatus, a receiving apparatus, and a method of signal processing are provided. The transmitting apparatus includes at least one processor configured to implement: a packet generator which generates a packet including a header and a payload, based on an input stream; and a signal processor which signal-processes the generated packet. The header includes a base header, and the base header includes various fields indicating at least one of a packet type, and a value indicating that the packet transmits one single complete input packet, a segment of an input packet, or a plurality of input packets. The fields included in the base header may also indicate presence of an additional header and a substream identifier. | 05-05-2016 |