Class / Patent application number | Description | Number of patent applications / Date published |
714750000 | Feedback to transmitter for comparison | 27 |
20080256411 | Retransmission in a Cellular Communication System - A base station ( | 10-16-2008 |
20080276148 | Interference Limitation for Uplink Retransmissions - The present invention relates to a method for transmitting data packets from a mobile terminal to a base station using a hybrid automatic repeat request protocol and soft combining of received data. Further, the present invention provides a base station and a mo-bile terminal both configured to perform the respective method steps. Moreover, a communication system is provided which comprises at least one base station and at least one mobile terminal. In order to decrease the interference caused by retransmissions, the present invention suggests the use of separated channels for initial transmissions and their retransmissions. In order to decrease the interference caused by retransmissions, the present invention suggests the use of separated channels for initial transmissions and their retransmissions. | 11-06-2008 |
20090094498 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING AUTOMATIC RETRANSMISSION REQUEST FEEDBACK INFORMATION ELEMENT IN A COMMUNICATION SYSTEM - An Automatic Retransmission reQuest (ARQ) data block reception apparatus and method in a communication system is provided. In the ARQ method, an ARQ feedback Information Element (IE) is transmitted to an ARQ data block transmission apparatus. The ARQ feedback IE includes a first field for indicating a Connection IDentifier (CID) of an ARQ connection, a second field for indicating the presence/absence of an additional ARQ feedback IE after the ARQ feedback IE, a third field for indicating a type of an Acknowledgement (ACK) MAP included in the ARQ feedback IE, a fourth field for indicating a Block Sequence Number (BSN) of an ARQ data block, and m ACK MAP fields. The m ACK MAP fields each include information indicating presence/absence of an additional ACK MAP field after a corresponding ACK MAP field, and an ACK MAP indicating success/failure in normal reception for each of n ARQ data blocks, wherein m and n each denote an integer greater than or equal to 1. | 04-09-2009 |
20090158111 | SELF-TIMED ERROR CORRECTING CODE EVALUATION SYSTEM AND METHOD - Error correcting codes (ECCs) have been proposed to be used in high frequency memory devices to detect errors in signals transmitted between a memory controller and a memory device. For high frequency memory devices, ECCs have delay characteristics of greater than one clock cycle. When the delay exceeds one clock cycle but is much less than two clock cycles, an entire second clock cycle must be added. By calculating and comparing the ECC value in a static logic circuit and a dynamic logic circuit, the logic delay is substantially reduced. In addition, the ECC value may be calculated and compared using two sets of static logic gates, where the second static logic gate is clocked by a clock signal that is delayed relative to the clock signal of the first set of logic gates. | 06-18-2009 |
20090217120 | RADIO COMMUNICATIONS APPARATUS AND RADIO COMMUNICATIONS METHOD - A disclosed radio communications apparatus performs at least an automatic repeat request control and performs radio communications using a frame that occupies predetermined plural frequency bands. This apparatus includes a reception portion that receives feedback information about each of a plurality of frequency bands from a communications party, a determination portion that determines which frequency band among the plural frequency bands is to be used to retransmit a retransmission packet indicated by the feedback information, and a transmission portion that transmits the retransmission packet using. one or more determined frequency bands. | 08-27-2009 |
20090249158 | METHOD FOR PACKET RETRANSMISSION EMPLOYING FEEDBACK INFORMATION - A method for packet retransmission employing feedback information is disclosed. The method for packet retransmission employing feedback information comprises receiving reception acknowledgement information from a receiver after a transmitter transmits packets, the reception acknowledgement information representing channel status information and decoding success/failure of the packets; and changing a retransmission mode in accordance with the channel status information if the reception acknowledgement information represents decoding failure, and transmitting retransmission packets of the packets in accordance with the changed retransmission mode. Thus, it is possible to improve decoding probability of the receiver and increase efficiency of retransmission. | 10-01-2009 |
20090276677 | Radio Communications Device And Reception Method - A radio communications device includes a first error detection part configured to perform error detection on a header included in a packet; a determination part configured to determine whether there is consistency with respect to the length of the packet based on the header in response to the first error detection part detecting no error in the header; a decryption part configured to decrypt the packet in response to the determination part determining that there is consistency with respect to the length of the packet; and a second error detection part configured to perform error detection on the packet in response to the determination part determining that there is consistency with respect to the length of the packet, wherein the decryption part is configured to start to decrypt the packet before completion of the error detection by the second error detection part. | 11-05-2009 |
20090292965 | METHOD FOR TRANSMITTING WIRELESS DATA AND RECORDING MEDIUM STORING PROGRAM FOR EXECUTING THE METHOD - A method of transmitting wireless data and a recorded medium storing a computer program therefor. The method of transmitting data by a sender coupled to a receiver through a network can include transmitting a data frame having an Initiation field to the sender and transmitting a plurality of data frames corresponding to the Initiation field. The present invention can improve the completion rate of data transmission under an extremely-poor wireless environment. | 11-26-2009 |
20090319854 | TRISTATE REQUESTS FOR FLEXIBLE PACKET RETRANSMISSION - Extending acknowledgement messages from two states to at least three states is described, whereby such messages constitute a packet quality indication (PQI) reflecting quality or usability of the received signal. In an HARQ system, a transmitting station can flexibly select a better alternative for the next information to transmit on the basis of such PQI. One aspect includes determining how best to correct an unsuccessful packet transmission based on quality information about the specific packet. Implementing apparatus and procedures are described. | 12-24-2009 |
20100050041 | APPARATUS AND METHOD FOR GENERATING AUTOMATIC REPEAT REQUEST (ARQ) FEEDBACK MESSAGE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for generating an Automatic Repeat reQuest (ARQ) feedback message in a wireless communication system are provided. A method for generating an ARQ feedback message at a receiving end in a wireless communication system includes, generating first ARQ feedback information of a first scheme, the first ARQ feedback information comprising information of a first erroneous ARQ block of one or more ARQ blocks for which the ARQ feedback is not performed, generating second ARQ feedback information of a second scheme indicative of error of at least one ARQ block not represented in the first ARQ feedback information, generating an ARQ feedback message comprising the first ARQ feedback information and the second ARQ feedback information, and transmitting the ARQ feedback message to a transmitting end. | 02-25-2010 |
20100077274 | Hybrid automatic repeat request and channel information feedback for relay - Operations of a relay are disclosed. To perform a hybrid automatic repeat request (HARQ), the relay receives a plurality of codewords from a base station and transmits a status indicator with respect to the plurality of codewords to the base station. The status indicator is a signal informing the base station about whether or not the configuration of an HARQ has been changed. Although a backhaul link and an access link are asymmetric, HARQ operation can be achieved. | 03-25-2010 |
20100146357 | RELIABLE MULTICAST WITH LINEARLY INDEPENDEDNT DATA PACKET CODING - Regular data packets are scheduled for transmission from a sender to multiple receivers in a multicast ARQ system. In a joint scheduling and encoding procedure, a composite data packet is formed as a weighted linear combination of regular data packets. The corresponding coding weights are adapted based on feedback information from the receivers about received data packets such the composite packet represents a new linearly independent coding of regular data packets different from any multicast data packet previously received each receiver in a selected set of the receivers during the multicast session. In addition, using a weight vector with at least two different non-zero coding weights adds a further degree of freedom and guarantees the ability to always form a composite data packet that represents a new linearly independent coding for transmission. The ability to transmit linearly independent data packets in at least a majority of the transmission instances will significantly improve the throughput performance for reliable multicasting, especially when the number of users is large. | 06-10-2010 |
20100146358 | Method and Arrangement Relating to Communications Network - The invention relates to a method in a radio base station and user equipment, and comprises varying the transmitted timings of the HARQ feedback signalling such that only users with orthogonal pre-coding vectors (W) are scheduled simultaneously, to reduce multi-user interference and to ensure that said signalling is received by a transmitter before the start of the next retransmission. | 06-10-2010 |
20100146359 | METHODS AND SYSTEMS FOR ARQ FEEDBACK MESSAGE IMPROVEMENT - Certain embodiments of the present disclosure propose techniques for improving automatic repeat request (ARQ) feedback messages to reduce unnecessary transmissions by notifying the transmitter of the last acknowledged block in the ARQ feedback message. | 06-10-2010 |
20100174962 | SYSTEMS AND METHODS FOR DATA TRANSMISSION - A method for a receiver to provide a plurality of feedbacks to a transmitter, the plurality of feedbacks for use by the transmitter to determine data retransmission. The method includes: mapping the plurality of feedbacks to a sequence of symbols; and transmitting the sequence of symbols to the transmitter. | 07-08-2010 |
20100180172 | COMMUNICATION CONTROL METHOD - Methods of controlling peers of a relay ARQ protocol are described. It is proposed to provide a predetermined marking in the payload section of messages of the relay ARQ protocol, such that relay peers along the relay connections can extract information from the payload section. | 07-15-2010 |
20100229065 | RADIO RECEPTION DEVICE, RADIO TRANSMISSION DEVICE, AND RADIO COMMUNICATION METHOD - It is possible to provide a radio transmission device, a radio reception device, and a radio communication method which can suppress increase of the feedback overhead and improve the throughput characteristic. In ST | 09-09-2010 |
20100241919 | METHOD AND APPARATUS FOR ARQ FEEDBACK IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for Automatic Repeat reQuest (ARQ) feedback in a wireless communication system. The ARQ feedback method includes checking whether feedback transmission on received ARQ blocks with a Cumulative ACK type is possible, and performing ARQ feedback transmission with the Cumulative ACK type when the feedback transmission with the Cumulative ACK type is possible; calculating the number of blocks to be transmitted feedback with a Cumulative ACK with Block Sequence ACK type and the number of blocks to be transmitted feedback with a Cumulative with Selective ACK type, when the feedback transmission with the Cumulative ACK type is not possible; selecting a feedback type by comparing the number of blocks to be transmitted between the Cumulative ACK with Block with Block Sequence ACK type and the Cumulative with Selective ACK type; and performing ARQ feedback with the selected feedback type. | 09-23-2010 |
20100325509 | DATA TRANSMISSION/RECEIVING METHOD IN MULTIMEDIA BROADCAST MULTICAST SERVICE SYSTEM AND APPARATUS THEREOF - Provided is a Multimedia Broadcast Multicast Service (MBMS); and, more particularly, a data transmission/receiving method in a multimedia broadcast multicast service system, and an apparatus thereof. The data transmitting method in the MBMS system includes the step of checking a terminal receiving data provided from the MBMS and the step of determining whether there is error report feedback on retransmission of the data according to the number of the detected terminals. | 12-23-2010 |
20100325510 | TRANSMISSION DEVICE, RECEPTION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A reception device which communicates with a transmission device, the reception device including: a reception unit which receives a signal in which a plurality of data signals are multiplexed, from the transmission device; a data signal detection unit which detects transmission data included in the plurality of data signals from the reception signal received by the reception unit, and outputs the detected transmission data and success/failure of transmission data detection for each data signal; a selection unit which selects some of data signals for which the transmission data detection is not successful among the plurality of multiplexed data signals; a success/failure information signal generation unit which generates success/failure information in data signals for which the transmission data detection is successful and the selected data signals; and a report transmission unit which reports the success/failure information to the transmission device. | 12-23-2010 |
20110087945 | METHOD AND APPARATUS FOR ENCODING FEEDBACK SIGNAL - A method and apparatus for encoding feedback signals is provided. The method includes: encoding feedback signals of three carriers to output a bit sequence; and transmitting the bit sequence on a High Speed-Dedicated Physical Control Channel (HS-DPCCH). The step of encoding the feedback signals of the three carriers may specifically include: mapping the feedback signals of the three carriers into a codeword, in which the codeword can be selected from a codebook, and codewords in the codebook satisfy a particular code distance relationship. The method for jointly encoding feedback signals of three carriers in a Ternary Cell (TC) mode is provided. Feedback signals are transmitted over a single code channel. Therefore, power overhead is reduced, and system performance is improved. | 04-14-2011 |
20110145673 | AUTHENTICATION OF CONTENT DOWNLOAD - According to the invention, a method for authenticating download of a number of digital content files ordered from a web site is disclosed. In one step, a selection of the digital content files is received with the web site. Download manager software, media information, the digital content files, and first codes for each of the digital content files are sent to the client computer. The media information indicates a location of each of the number of digital content files. A first code is calculated for each of the digital content files. If the client computer determines that the first code doesn't match a second code for a particular digital content file, it is resent. | 06-16-2011 |
20130132788 | METHOD FOR TRANSMISSION OF DATA IN A RADIO COMMUNICATION SYSTEM, FIRST NETWORK NODE AND SECOND NETWORK NODE THEREOF - The invention relates to a method (MET | 05-23-2013 |
20130139019 | Unidirectional Error Code Transfer for Both Read and Write Data Transmitted Via Bidirectional Data Link - A controller includes a link interface that is to couple to a first link to communicate bi-directional data and a second link to transmit unidirectional error-detection information. An encoder is to dynamically add first error-detection information to at least a portion of write data. A transmitter, coupled to the link interface, is to transmit the write data. A delay element is coupled to an output from the encoder. A receiver, coupled to the link interface, is to receive second error-detection information corresponding to at least the portion of the write data. Error-detection logic is coupled to an output from the delay element and an output from the receiver. The error-detection logic is to determine errors in at least the portion of the write data by comparing the first error-detection information and the second error-detection information, and, if an error is detected, is to assert an error condition. | 05-30-2013 |
20150033091 | APPARATUS AND METHOD FOR REQUESTING RETRANSMISSION OF LOST PACKET BASED ON MPEG MEDIA TRANSPORT SYSTEM - An apparatus for requesting retransmission of a lost packet, based on MPEG media transport (MTT) system, may include a packet receiver configured to receive an MPEG media transport (MMT) packet stream from an MMT sending entity; a message generator configured to generate an automatic repeat request (ARQ) feedback (AF) signaling message that includes a packet identifier (ID) that has been assigned to a lost packet; and a message sender configured to transmit the generated AF signaling message to the MMT sending entity. | 01-29-2015 |
20160149669 | Data Transfer System - A method for transferring data, more particularly, over a low energy connection such as a Bluetooth Low Energy connection, includes dividing a source data into a plurality of data chunks, associating each data chunk with a verification data such as a checksum, transferring the data chunks and verifying that each data chunk was received without error, using the checksum. The method may also include providing a verification data for the source data, transferring it before and after all the data chunks, and verifying that all the data chunks and thus the entire source data was received. | 05-26-2016 |
20190149264 | DIGITAL RADIO CHANNEL ERROR DETECTION | 05-16-2019 |