Abstract: Electronic apparatus, systems, and methods to construct and operate the electronic apparatus and/or systems include a memory unit configured to receive data flow from two directions. The memory unit can be configured serially in a chain with other memory units. The chain can include an error check and correcting unit (ECC). Additional apparatus, systems, and methods are disclosed.

Abstract: A latency reduction method for read operations of an array of N solid-state storage devices having n solid-state storage devices for data storage and p solid-state storage devices for storing parity data is provided. Utilizing the parity generation engine fault tolerance for a loss of valid data from at least two of the N solid-state storage devices, the integrity of the data is determined when N?1 of the solid-state storage devices have completed executing a read command. If the data is determined to be valid, the missing data of the Nth solid-state storage device is reconstructed and the data transmitted to the requesting processor. By that arrangement the time necessary for the Nth solid-state storage device to complete execution of the read command is saved, thereby improving the performance of the solid-state memory system.

Abstract: In a communication system, a transmitter device transmits data to a receiver device for performing error-correcting decoding processing by combining received data and retransmitted data. The transmitter device selects one of a first set of schemes of an M number of modulation and coding schemes as a modulation and coding scheme (MCS) of first data according to communication quality information obtained from the receiver device when the first data is initially transmitted, and selects one of a second set of schemes of an N number of MCSs (N<M) according to the communication quality information when the first data is retransmitted. The transmitter device generates a control signal including information indicating the selected MCS so that an amount of information of the MCS selected from the second set of schemes is less than an amount of information of the MCS selected from the first set of schemes.

Abstract: A method detects a memory error of a computing device using a baseboard management controller (BMC) of the computing device. The BMC includes a microprocessor and a storage system. The method reads data of a state register of a processor of the computing device when the microprocessor receives an interrupt signal generated by the processor due to an internal error of the processor. Then the method determines whether the internal error is a multiple-bit error of a memory of the computing device according to the read data. Upon the condition that the internal error is the multiple-bit error, the method records error information of the multiple-bit error in the storage system.

Abstract: Techniques for controlling data transmission in a wireless communication system based on hybrid automatic retransmission (HARQ) are described. In one design, a user equipment (UE) may determine the number of HARQ processes (Z) supported by the UE, e.g., based on the amount of resources available at the UE. The UE may send information indicative of the number of HARQ processes supported by the UE to a Node B. The UE may thereafter receive data from the Node B on up to Z HARQ processes. In one design, the UE may receive data for non-guaranteed bit rate (non-GBR) traffic on up to Z HARQ processes and may receive data for guaranteed bit rate (GBR) traffic on up to all HARQ processes available in the system. In another design, the UE may receive data for both GBR traffic and non-GBR traffic on up to Z HARQ processes.

Abstract: Systems and methods for providing distributed Automatic Repeat Request (ARQ) in a wireless communication system are described herein. In one embodiment, a relay station interconnects a base station of the wireless communication system and one or more mobile stations. A first ARQ process is performed for a first connection between the base station and the relay station. A separate second ARQ process is performed for a second connection between the relay station and a mobile station. In this manner, rather than having end-to-end ARQ between the base station and the mobile station, a distributed ARQ process is provided.

Abstract: According to an embodiments, a device may be provided. The device may include a data receiver configured to receive data in sets of consecutive packets from a data transmitter, wherein each set may include a first packet and at least one further packet. The device may further include a first packet reception determinator configured to determine whether the first packet of a set of consecutive packets is received by the data receiver. The device may further include a data sending determinator configured to determine whether the data transmitter sends the set of consecutive packets based on whether the first packet of the set of consecutive packets is received.

Abstract: A method and apparatus are described including determining address using an access point address and a multicast group address, transmitting a recovery request message to a recovery server to request recovery data using the address and receiving the recovery data from the recovery server. Also described are a method and apparatus including receiving a registration message, transmitting a reply to the registration message, receiving a recovery request message, transmitting recovery data responsive to the recovery request message and transmitting a message to a recovery multicast group to determine status of the recovery multicast group.

Abstract: An arrangement of interleavers allocates bits from an input symbol across sub-symbols transmitted via sub-carriers of multiple orthogonal frequency division multiplex (OFDM) carriers. The input bits are allocated in a fashion to provide separation across subcarriers, and rotation of sub-symbols across the OFDM carriers provides additional robustness in the present of signal path impairments.

Abstract: A wireless communication apparatus that uses a communication protocol to transmit and receive data with a data check bit, including a received data determining section that performs a data check for received data by using the data check bit to determine whether the data is error; a received result transmitting section that, when determined to be error, discards the data and transmits a retransmission request to other wireless communication apparatus of the transmitting origin, whereas determined to be not error, transmits a message indicating that the data is normal to the other wireless communication apparatus of the transmitting origin; and a retransmission asking section that determines whether a format of the data is incorrect or normal, and when determined to be normal, passes the data to predetermined processing, whereas when determined to be incorrect, discards the data and asks the received result transmitting section to request retransmission of the data.

Abstract: Retransmission techniques are disclosed. These techniques may be used in networks employing contention-based access schemes, such as CSMA. For instance, a device may receive a corrupted packet from a transmitting device, and determine a cause of the corruption. When the determined cause of the corruption is an in-network packet collision, the device allows the transmitting device to send a retransmission of the packet in accordance with a contention-based access scheme. However, when the determined cause of the corruption is other than an in-network packet collision, the device provides retransmission assistance to the transmitting device. This retransmission assistance may include a channel reservation for a retransmission, and/or one or more link adaptation suggestions for the transmitting device.

Abstract: A new-part acquiring unit acquires a part of a block generated by a block generating unit, as a new part to be contained in a packet. A retransmission-part acquiring unit acquires a part of a block corresponding to a NAK as a retransmission part to be contained in a packet among blocks held in a retransmission buffer unit. An encoding unit groups a new part acquired by the new-part acquiring unit and a retransmission part acquired by the retransmission-part acquiring unit, and generates a packet. A modulating unit modulates a packet output from the encoding unit. A wireless processing unit performs a predetermined wireless transmission process to a modulated packet, and transmits a processed modulated packet via an antenna.

Abstract: TTI bundling is included for Msg3 transmissions in LTE communications. A reserved group of preambles or reserved set of random access preamble transmission opportunities are used to indicate user equipment (UE) need of uplink (UL) transmission of a TTI-bundled Msg3. The UE transmits the same redundancy version for transmissions within a TTI bundle as the eNB expects even if any of the transmissions are dropped due to collisions with an Msg3 transmission. In addition, co-existence of TTI bundling and UL semi-persistent scheduling (SPS) for TDD DL/UL configurations is provided using SPS intervals which are multiples of various fixed time periods.

Abstract: Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like.

Abstract: Some demonstrative embodiments include coordinating a session transfer timeout period between first and second multi-band wireless communication devices capable of communicating over at least first and second wireless communication frequency bands, wherein the session transfer timeout period corresponds to at least one communication session between the first and second wireless communication devices; and if the first wireless communication unit cannot communicate with the second wireless communication device over the first wireless communication frequency band for a time period of at least the session transfer timeout period, transferring the at least one communication session from the first wireless communication frequency band to the second wireless communication frequency band. Other embodiments are described and claimed.

Abstract: In one or more embodiments, an intelligent communications device is disclosed. In one embodiment, an apparatus for managing a network connection of the intelligent communications device is disclosed. The apparatus includes a communication module for monitoring the network connection through a first port that is independent of a network port. The first port is associated with a computer-executable application that is operative to detect failure of the network connection. The apparatus further includes a detection module for detecting a failure of the network connection at the network port and, in response to the failure, causing the intelligent communications device to reconnect to the network. The apparatus also includes a power supply module for iteratively power-cycling operation of the intelligent communications device in response to a failed network connection.

Abstract: A delivery method for IPTV which combines forward error correction (FEC) with retransmission techniques for handling packet loss and/or corruption. Packet loss or corruption of popular channels is handled through the use of FEC while packet loss of less popular channels is handled by retransmission.

Abstract: A method for correcting errors in a multiple antenna system based on a plurality of sub-carriers and a transmitting/receiving apparatus supporting the same are disclosed. The method includes determining a phase shift based precoding matrix phase shifted at a predetermined phase angle, initially transmitting each sub-carrier symbol to a receiver in a packet unit by using the phase shift based precoding matrix, reconstructing the phase shift based precoding matrix to reduce a spatial multiplexing rate if a negative reception acknowledgement (NACK) is received from the receiver, and retransmitting the initially transmitted sub-carrier symbol by using the reconstructed phase shift based precoding matrix or by changing the phase shift based precoding matrix using offset information fed back from the receiver or random offset information.

Abstract: A mobile station for performing radio communication with a radio base station, the mobile station includes an information generation section which generates information indicative of a result of error detection on a downlink signal received; and a sending section which sends the information via a physical uplink control channel, and sends uplink data via a physical uplink shared channel at a different transmission frequency from the physical uplink control channel and in a same transmission time period as the physical uplink control channel; whereby the information generation section and the sending section operate when the mobile station receives downlink scheduling information and uplink allocation grant in a same subframe.

Abstract: An apparatus and method for persistent allocation in a wireless communication system are provided. An operation method of a Base Station (BS) includes determining if decoding information for one or more persistent allocations assigned to one or more corresponding Mobile Stations (MSs) is updated, if the decoding information is updated, generating a signaling message to signal the update of the decoding information, and transmitting the signaling message through a DL MAP. The signaling message includes an R_CID and ACID associated with at least one persistent allocation to which the updated decoding information is to be applied.

Abstract: Systems, methods, apparatus, devices and computer program products enhance uplink inter-cell interference cancellation with HARQ retransmissions. The decoding of a data packet depends on whether the interfering packet was decoded. Since the interfering packet is itself transmitted using a HARQ process, the transmission by the victim UT can be accomplished to take this situation into account. The latency of the victim UT can be varied based on the need for energy efficient transmission. In accordance with one specific aspect, if the receiver can decode multiple packets simultaneously, high data rates can be achieved using packet pipelining.

Abstract: Methods and apparatus are described for determining, via a Hybrid Automatic Repeat Request (HARQ) module, that a maximum number of retransmissions has been reached for a HARQ packet. The HARQ module may communicate an internal NACK to a message retransmission module indicating a transmission failure. The message retransmission module may retransmit at least a part of the message. The retransmission may be performed prior to the expiration of a timer.

Abstract: Systems and methodologies are described that facilitate utilizing timers in conjunction with transmitting buffer status reports (BSR). A prohibit timer can be utilized to determine when BSRs can be transmitted to an eNB. The prohibit timer can be initialized or restarted upon transmitting a BSR to an eNB. A BSR retransmit timer can be used to determine when to retransmit a BSR. The BSR retransmit timer can be initialized upon transmitting a BSR to an eNB and restarted each time an uplink resource allocation is received from the eNB. Once the timer expires, if an uplink transmission buffer contains data (e.g., size>0), the BSR can be retransmitted to the eNB. Control data feedback can additionally be used to determine when to retransmit the BSR. In addition, in either case, the timer duration values can be provided by the eNB.

Abstract: In a wireless communication system, a sender apparatus sends a data block, for each of a plurality of stream data, with data block identification information, which does not conflict between stream data, annexed, and a reception apparatus performs a re-sending synthesis process for a data block received already and a re-sending data block to which the same data block identification information is individually annexed based on the data block identification information annexed to the received data block. Consequently, also in a case wherein the number of transmission streams between the sender apparatus and the reception apparatus is varied (reduced), the matching property of the data block which is a re-sending synthesis target can be maintained and communication can be continued normally.

Abstract: A method for transmitting a transport block includes segmenting the transport block into code blocks corresponding in number to a multiple of the number of layers to be used for the transmission of the transport block, attaching a Cyclic Redundancy Check (CRC) to the segmented code blocks, sequentially mapping the code blocks to which the CRC has been attached to at least one layer according to a predetermined mapping rule, and transmitting the code blocks.

Abstract: A method for data communication between a base station and at least one transponder by a high-frequency electromagnetic carrier signal is disclosed, onto which information packets are modulated, whereby each information packet has a header section, a middle section, and an end section and whereby the middle section has a data field for the transmission of data and/or address information and a protection field placed thereafter for the correction of errors in the transmission of the data and/or address information, whereby after the data field the base station inserts at least one control field, by which the protection field following the inserted control field can be changed in such a way that the duration of an information packet is set variably. The invention relates further to a base station for carrying out this method, to a data communication system containing a base station and at least one transponder in communicative wireless contact with the base station.

Abstract: A method and apparatus for selectively replacing damaged portions of a data stream. The method comprises analyzing the data stream to identify damaged portions therein; selecting a damaged portion for replacement; and replacing the selected damaged portion. The selected damaged portion is selected for replacement in dependence on a rate of replacement, the rate of replacement being that at which previous portions of the data stream have been replaced.

Abstract: This invention proposes an automatic retransmission controller and a retransmission block recombination apparatus, of which the automatic retransmission controller comprises a responsive reception unit that receives the information fed back from the receiver; a retransmission judging unit that determines coded data blocks to be retransmitted according to the information received by the responsive reception unit; and a data acquisition unit that acquires a part of data in each of the coded data blocks to be retransmitted judged by the retransmission judging unit for recombination to form a retransmission coded block, when the number of the coded data blocks to be transmitted is more than one.

Abstract: A method of transmitting control information for performing a Hybrid Automatic Repeat Request (HARQ) process in a wireless communication system supporting a plurality of transmission bands is disclosed. The method includes generating the control information including HARQ Process Set (HPS) information indicating a specific HPS of a plurality of HPSs corresponding to the plurality of transmission bands, and transmitting the generated control information to a user equipment. A predetermined number of independent HARQ processes is performed according to the plurality of transmission bands.

Abstract: Two neighboring receiving units that receive a same signal notify each other of information representing that the signal has been received through the signal line, a process of correcting a transmission delay difference is performed according to a time difference between notification from the other receiving unit and its own signal reception, and selection of one of the neighboring receiving units and a receiving unit that has not performed a correction process with the one receiving unit among receiving units neighboring to the one receiving unit and a transmission delay difference correction process between the selected receiving units are sequentially performed. Thus, even when the number of processing target lanes increases, a transmission delay difference can be reliably absorbed and corrected while implementing an interconnection layout, a noise counter-measure, and a high-speed circuit.

Abstract: There is provided an information processing apparatus including a communication unit that transmits content to a communication terminal connected via a network and a control unit that controls transmission of the content by the communication unit. The control unit causes the communication unit to transmit a first file containing the content for a time corresponding to a communication disabled time of the communication terminal in response to a transmission request of the content from the communication terminal and causes the communication unit to transmit a second file to be transmitted subsequent to the first file at a transmission predetermined time obtained by adding the communication disabled time of the communication terminal to a transmission time of the first file.

Abstract: A wireless communication apparatus that uses a communication protocol to transmit and receive data with a data check bit, including a received data determining section that performs a data check for received data by using the data check bit to determine whether the data is error; a received result transmitting section that, when determined to be error, discards the data and transmits a retransmission request to other wireless communication apparatus of the transmitting origin, whereas determined to be not error, transmits a message indicating that the data is normal to the other wireless communication apparatus of the transmitting origin; and a retransmission asking section that determines whether a format of the data is incorrect or normal, and when determined to be normal, passes the data to predetermined processing, whereas when determined to be incorrect, discards the data and asks the received result transmitting section to request retransmission of the data.

Abstract: A method for authenticating messages in a communication network includes forming a super message having a plurality of individual messages such that at least two of the individual messages are intended for separate receiving entities. The method further includes creating a message authentication code (MAC) using a private key, such that the MAC is configured to permit authentication of the super message using a public key.

Abstract: A wireless communication apparatus that uses a communication protocol to transmit and receive data with a data check bit, including a received data determining section that performs a data check for received data by using the data check bit to determine whether the data is error; a received result transmitting section that, when determined to be error, discards the data and transmits a retransmission request to other wireless communication apparatus of the transmitting origin, whereas determined to be not error, transmits a message indicating that the data is normal to the other wireless communication apparatus of the transmitting origin; and a retransmission asking section that determines whether a format of the data is incorrect or normal, and when determined to be normal, passes the data to predetermined processing, whereas when determined to be incorrect, discards the data and asks the received result transmitting section to request retransmission of the data.

Abstract: A method and apparatus for retransmission processing in a communication receiver includes improving the performance of Incremental Redundancy (IR) combining and retransmission processing at minimal increased complexity. One aspect of these improvements involves the use of prior decoding results, if the decoding block quality is above a threshold value, rather than or in addition to prior demodulation results, in retransmission processing. That is, the teachings herein propose selectively using the hard bit decisions obtained from decoding previously transmitted data blocks, to improve the decoding of retransmitted data blocks.

Abstract: The present invention relates to retransmissions In a communications system. A method and system of reducing uplink retransmission delay of a radio communications system by introducing an uplink MAC ARQ layer of Node B is disclosed. Further, a MAC PDU data indicator for soft combining control In Node B and RLC PDU reordering is introduced.

Abstract: Various embodiments are provided to address some of the current issues in establishing and adapting an HARQ operating point. Some embodiments include determining a metric that indicates the predictability of a signal to noise plus interference ratio (SINR) for signaling from a wireless device and setting a hybrid automatic repeat request (HARQ) operating point for communication with the wireless device using the metric. By setting the HARQ operating point based on a metric that indicates the predictability of SINR for wireless device signaling, throughput can be improved over present-day HARQ operating point adaptation techniques.

Abstract: A processor including: a first storage unit that stores data; an error detection unit that detects an occurrence of error in data read out from the first storage unit; a second storage unit that stores data read out from the first storage unit based on a load request; a rerun request generation unit that generates a rerun request of a load request to the first storage unit in the same cycle as the cycle in which error of data is detected when the error detection unit detects the occurrence of error in data read out from the first storage unit by the load request; and an instruction execution unit that retransmits the load request to the first storage unit when data in which error is detected and a rerun request are given.

Abstract: A chip applied to a serial transmission system includes an input terminal, a core circuit, an output terminal, a first transmission line, a second transmission line and a spare transmission line, where the input terminal is used to receive an input signal from a source outside the chip, the output terminal is used to output an output signal, the first transmission lines is coupled between the input terminal and the core circuit, the second transmission line is coupled between the core circuit and the output terminal, and the spare transmission line is coupled between the input terminal and the output terminal. When the core circuit cannot process the input terminal normally, the input signal is directly transmitted to the output terminal via the spare transmission line, and the input signal serves as the output signal to be outputted from the output terminal.

Abstract: Embodiments of a circuit are described. In this circuit, a receive circuit includes M input nodes that receive a set of M symbols on M links during a time interval, where the set of M symbols are associated with a codeword. Moreover, the receive circuit includes a decoder, coupled to the M input nodes, that determines the codeword in a code space based on the set of M symbols and that decodes the codeword to a corresponding set of N decoded symbols. Additionally, the receive circuit may include a detector that detects an imbalance in a number of instances of a first value in the set of M symbols and a number of instances of a second value in the set of M symbols, and, if an imbalance is detected, that asserts an error condition.

Abstract: Disclosed is a user equipment in a wireless communication system, configured to receive a first initial transmission associated with a first Hybrid Automatic Repeat Request (HARQ) process; receive a second initial transmission associated with a second HARQ process; and receive at least one retransmission associated with the first HARQ process, wherein when the second initial transmission occurs before the at least one retransmission, the second HARQ process assigned an HARQ process ID that is different from an HARQ process ID assigned to the first HARQ, and wherein when the second initial transmission occurs after the at least one retransmission, the second HARQ process assigned an HARQ process ID that is the same as an HARQ process ID assigned to the first HARQ process.

Abstract: Disclosed are a retransmission method, a base station, and a user device in a multicast system. In order to reduce uplink signaling resource, a new MNI (Multiple NACK Indicator) message is added to an uplink common feedback channel in an existing E-MBMS system. The MNI message enables decision of an XOR retransmission group which satisfies the XOR retransmission condition. As compared to a conventional XOR retransmission, the number of uplink signalings does not depend on the number of receivers. That is, when a plenty of receptions are present, it is possible to significantly reduce uplink signalings.

Abstract: A transceiving unit receives at least one sequence of data blocks where the data blocks each have a respective sequence number. The receipt of the data blocks is monitored to establish whether the data blocks have been successfully received or not. A receipt report is selectively generated based at least in part on the performed monitoring. The receipt report includes at least one data part in accordance with a predetermined data format, which includes at least a first data portion with information identifying a sequence number of one data block in the sequence that has not been successfully received and a second data portion with information on whether successful receipt has been achieved for a number of data blocks in the sequence having sequence numbers following directly after the identified sequence number. The receipt report is provided in a generated data block that is transmitted.

Abstract: Problem: A packet error rate in a receiver needs to be effectively reduced. Solution to Problem: A transmitter 11 inserts error detection codes into information packets on one-to-one basis, at a certain layer at which signal processing is performed earlier than at a physical layer, to obtain first information packets. The transmitter 11 codes the first information packets at the physical layer to obtain second information packets, and transmits the second information packets. At the certain layer, the transmitter 11 generates parity packets by coding the information packets and inserts the error detection codes into the parity packets on one-to-one basis to obtain first parity packets. The transmitter codes the first parity packets at the physical layer to obtain second parity packets. The transmitter 11 transmits the second parity packets in accordance with a transmission request from each of one or more receivers.

Abstract: A data processing apparatus capable of efficiently collecting information useful for network failure analysis. If image data transmission to a host computer has failed, a packet acquisition start instruction is given from a data transmission control unit to a packet acquisition control unit. Subsequently, image data is retransmitted to the host computer. After completion of the image data retransmission, a packet acquisition termination instruction is given to the packet acquisition control unit.

Abstract: A scheme of enhanced block coding based on small size block code is provided. Such is achieved by obtaining extended basis sequences for a (32, O) code with O=1, 2, . . . 12; selecting an offset starting value that produces maximum error correction capability in each O value; and generating basis sequences for a (48, O) code based on the obtained extended basis sequences for the (32, O) code with the offset starting value selected based on the selecting step. The offset starting value could be selected as 18, which results in the largest sum of distances.

Abstract: The method and arrangement according to the present invention relates to of scheduling and coding in communication systems utilizing automatic repeat request (ARQ) and/or multihop scheduling and forwarding. According to the inventive method the receiving nodes selectively stores received information, also overheard information, as a priori information and feed back information about their respective stored a priori information to a sending node. The sending node forms composite data packets by jointly encoding and scheduling multiple data packets, which composite data packets are transmitted to receiving nodes. Upon receiving a composite data packet the receiving nodes uses their stored a priori information in the process of extracting data for themselves from the composite data packets.

Abstract: In a case where the F-RTO algorithm is simply combined with the exponential backoff algorithm which is being suppressed, there is a problem in that once a spurious timeout occurs, the spurious timeout continuously occurs since then. In order to solve the above problem, according to the present invention, in a communication device for transmitting data segments and receiving acknowledgements in response to the data segments, respectively and sequentially, suppressing an application of a backoff algorithm for increasing a retransmission timeout period at the time of retransmitting a data segment, and controlling the retransmission timeout period to retransmit the data segment, the spurious timeout is determined based upon the acknowledgement received immediately after the retransmission of the data segment. In an event of determining the occurrence of the spurious timeout, the retransmission timeout is increased.

Abstract: A wireless communication system including a sender apparatus having a plurality of transmitting antennas that transmits a plurality of data blocks; and a receiver apparatus that receives the plurality of data blocks, wherein the sender apparatus transmits a process number via a control channel different from a data channel to the receiver apparatus, and wherein the receiver apparatus performs HARQ processing of received data blocks based on the received process number which prevents the data blocks from competing.

Abstract: A system for delivering content over a network includes a server. The server is configured to divide the content into multiple segments, to create multiple data streams using the segments of the content, and to transmit each of the data streams via a respective multicast session, wherein a copy of each of the multiple segments is transmitted during a single time slot of the multicast session.