Patent application number | Description | Published |
20080285510 | Allocation of Signal-to-Noise Ratio margin in multi-carrier systems - Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin. | 11-20-2008 |
20090086759 | Retransmission in data communication systems - Embodiments related to retransmission in data communication systems are described and depicted | 04-02-2009 |
20090089638 | Retransmission and retransmission request in data communication systems - Embodiments related to retransmission and a retransmission request are described and depicted. | 04-02-2009 |
20090089641 | RETRANSMISSION SCHEME FOR COMMUNICATION SYSTEMS - One embodiment relates to a method of communicating data between a transmitter and a receiver of a communication system. In this method, a payload data stream is received from a network interface layer. The payload data stream includes data units eligible for retransmission and data units non-eligible for retransmission. These data units are grouped into containers, where a container is associated with a container identifier that distinguishes the container from other containers. The containers are grouped into data transmission units, where a data transmission unit includes at least one container along with redundancy information that facilitates error detection for that data transmission unit. The data transmission units are transmitted to the receiver as a transmission data stream. Other methods and systems are also disclosed. | 04-02-2009 |
20090144590 | INTERLEAVING REDUNDANCY APPARATUS AND METHOD - One embodiment of the invention relates to a network communication device. The network communication device includes a network interface configured to receive an initial data stream. The network communication device also includes an interleaving redundancy encoder that comprises a memory unit arranged in N columns and D rows. The interleaving redundancy encoder is configured to calculate at least one redundancy byte based on a series of equally spaced, non-consecutive bytes in the initial data stream, where a number of bytes between equally spaced bytes is approximately equal to D−1. Other systems and methods are also disclosed. | 06-04-2009 |
20100042883 | Retransmission - Embodiments related to retransmission are described and depicted. | 02-18-2010 |
20100046549 | Channel Bonding and Packet Fragment Retransmission Method and Apparatus - According to one embodiment, a physical line receiver is coupled to at least one of a plurality of bonded communication lines over which a sequence of packet fragments are transmitted as data units. The physical line receiver includes at least one physical sublayer that transfers packet fragments recovered from different ones of the data units received by the physical line receiver to a bonding sublayer for packet reassembly until the physical line receiver is instructed to stop transferring packet fragments because of a transmission error on one or more of the bonded communication lines coupled to a different physical line receiver. The at least one physical sublayer also buffers the recovered packet fragments without transferring the buffered packet fragments to the bonding sublayer until the physical line receiver is instructed to resume transferring packet fragments to the bonding sublayer. | 02-25-2010 |
20110072327 | Method and Device for retransmission - Embodiments related to retransmission in a communication system are described and depicted. In one embodiment, a retransmission entity repeats a transmission of a data transfer unit by the device after a predetermined number of other transmitted data transfer units has been transmitted. The retransmission entity may also determine whether a measure for a time period since the first transmission of the data transfer unit by the device has exceeded a predetermined threshold and to provide a final transmission of the data transfer unit based on the determining that the measure for the time period has exceeded the predetermined threshold. | 03-24-2011 |
20110154153 | Interleaving Redundancy Apparatus and Method - One embodiment of the invention relates to a network communication device. The network communication device includes a network interface configured to receive an initial data stream. The network communication device also includes an interleaving redundancy encoder that comprises a memory unit arranged in N columns and D rows. The interleaving redundancy encoder is configured to calculate at least one redundancy byte based on a series of spaced, non-consecutive bytes in the initial data stream. Other systems and methods are also disclosed. | 06-23-2011 |
20120201178 | Allocation of Signal-to-Noise Ratio Margin in Multi-Carrier Systems - Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin. | 08-09-2012 |
20120201256 | RETRANSMISSION IN DATA COMMUNICATION SYSTEMS - Embodiments related to retransmission in data communication systems are described and depicted. In one embodiment, a data packet is received and separated to a plurality of data fragments. Information indicating whether a fragment of the plurality of fragments is to be protected by retransmission is provided or information indicating whether a group of fragments is to be protected by retransmission is provided. A request for retransmission from the second transceiver unit to the first transceiver unit may be generated. Based on the request, one or more identified data fragments may be retransmitted. | 08-09-2012 |
20130287046 | SEAMLESS CHANGE OF DEPTH OF A GENERAL CONVOLUTIONAL INTERLEAVER DURING TRANSMISSION WITHOUT LOSS OF DATA - Methods and communication systems are presented, in which an interleaver depth is adjusted. | 10-31-2013 |
20150074480 | METHOD AND DEVICE FOR RETRANSMISSION - Embodiments related to retransmission in a communication system are described and depicted. In one embodiment, a retransmission entity repeats a transmission of a data transfer unit by the device after a predetermined number of other transmitted data transfer units has been transmitted. The retransmission entity may also determine whether a measure for a time period since the first transmission of the data transfer unit by the device has exceeded a predetermined threshold and to provide a final transmission of the data transfer unit based on the determining that the measure for the time period has exceeded the predetermined threshold. | 03-12-2015 |
Patent application number | Description | Published |
20080253401 | TRANSIENT ROBUST CHANNEL FOR COMMUNICATION SYSTEMS - One embodiment of the present invention relates to a network device. The network device includes a receiver configured to be coupled to a transmission medium supporting a multi-carrier channel over which data is communicated as symbols in a first communication state according to an initial bit-loading configuration. The receiver is further configured to detect noise that can corrupt the symbols on the multi-carrier channel. In addition, the receiver is configured to, in response to the detected noise, allocate at least part of the multi-carrier channel to a transient robust channel that facilitates adaptive communication. Other methods and devices are also disclosed. | 10-16-2008 |
20090122848 | Calibrating Received Signal Measurements in a Digital Subscriber Line Device - Methods and apparatus for calibrating received signal measurements in a digital subscriber line (DSL) device are disclosed. In an exemplary method, a received signal level is measured for each of one or more subcarriers of a digital subscriber line signal and converted into a corresponding measured power level. A corrected received power level is calculated as a function of the measured power level, a reference input impedance value, a nominal loop impedance value, and a pre-determined input impedance value for the DSL device. | 05-14-2009 |
20090185605 | SEAMLESS CHANGE OF DEPTH OF A GENERAL CONVOLUTIONAL INTERLEAVER DURING TRANSMISSION WITHOUT LOSS OF DATA - Methods and communication systems are presented, in which impulse noise is monitored on a communication channel, and an interleaver depth is adjusted according to the monitored impulse noise without interrupting communication service. | 07-23-2009 |
20090313517 | RETRANSMISSION SCHEME FOR COMMUNICATION SYSTEMS - One embodiment relates to a method of transmitting data from a transmitter to a receiver. In the method, a payload data stream is provided which comprises a plurality of payload data units. A container stream is formed which comprises a plurality of containers having respective container identifiers, where a container includes an integer number of the payload data units and where the container identifiers collectively establish a predetermined order for consecutive containers. A codeword stream is formed which comprises a plurality of codewords having respective redundancy information, where a codeword includes at least a portion of the container and where redundancy information of the codeword facilitates detection of erroneous data in the codeword. The codeword is transmitted from the transmitter to the receiver. Other methods and systems are also disclosed. | 12-17-2009 |
20100054150 | Adaptive Communication Systems and Methods - Methods and communication systems are presented, in which impulse noise is monitored on a communication channel, and impulse noise protection parameters are adjusted according to the monitored impulse noise without interrupting communication service. | 03-04-2010 |
20100070817 | SYSTEMS AND METHODS FOR REGULATING DELAY BETWEEN NETWORK INTERFACES - One embodiment relates to a method of processing data in a transmitter. In the method, a timestamp is generated for a data unit. The data unit is stored in a memory unit in the transmitter. The data unit is transmitted from the transmitter to a receiver. The transmitter waits up to a predetermined time measured with respect to the timestamp to receive an acknowledgement from the receiver. Based on whether the acknowledgement is received within the predetermined time, the transmitter selectively retransmits the data unit to the receiver. Other methods and systems are also disclosed. | 03-18-2010 |
20100309965 | ALLOCATION OF SIGNAL-TO-NOISE RATIO MARGIN IN MULTI-CARRIER SYSTEMS - Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin. | 12-09-2010 |
20110116573 | Methods and Systems for Adaptive Communication - One embodiment of the present invention relates to a method of transferring data in a communication system. In the method, an initial impulse noise protection value is determined. A number of redundancy bits is added to blocks of data to form codewords as a function of the initial impulse noise protection value, where the impulse noise protection value corresponds to a number of consecutive symbols that can be corrected. The number of symbols that can be correctly transmitted is changed by changing only the number of redundancy bits added to each block of data. | 05-19-2011 |
20120060076 | Adaptive Communication Systems and Methods - Methods and communication systems are presented, in which impulse noise is monitored on a communication channel, and impulse noise protection parameters are adjusted according to the monitored impulse noise without interrupting communication service. | 03-08-2012 |
20120087404 | Calibrating Received Signal Measurements in a Communication Device - Received signal measurements are calibrated in a communication device by measuring a received signal level for each of one or more subcarriers of a transmitted signal received from another communication device, converting the measured received signal level for each of the one or more subcarriers into a corresponding measured power level, estimating a terminal-to-terminal impedance between the communication devices and calculating a corrected power level for each of the one or more subcarriers as a function of the measured power level for the subcarrier, a known reference input impedance for the communication device and the estimated terminal-to-terminal impedance. | 04-12-2012 |