44 results about "NAK" patented technology

A method includes: when a status report triggering condition and / or sending condition are / is met, sending a status report. In response to when a first variable of a first data packet is less than a first threshold, the status report includes negative acknowledgement NACK information of the first data packet; or in response to when a first variable of a first data packet is greater than or equal to a first threshold, the status report does not include NACK information of the first data packet. The first data packet is an unsuccessfully received data packet, and the first variable of the first data packet indicates a quantity of feedback times of the NACK information of the first data packet.

A wireless transmit receive unit (WTRU) may be configured to transmit uplink control information, such as a hybrid automatic repeat request (HARQ) acknowledgement or negative acknowledgement (ACK / NACK), by using a sequence. The HARQ ACK / NACK may include one or two bits of information, and the WTRU may use a cyclic shift of the sequence to transmit the HARQ ACK / NACK. The WTRU may use different cyclic shifts of the sequence to transmit different HARQ ACK / NACK values, and the cyclic shifts may be separated from each other in a manner to facilitate the transmission. The WTRU may be further configured to receive an indication of a resource block used to transmit the HARQ ACK / NACK from a physical downlink control channel (PDCCH).

The invention provides an RDMA (Remote Direct Memory Access) out-of-order receiving and selective retransmission method, which comprises the following steps of: recording an arrival state of a data packet by adopting a Bitmap algorithm and / or a segmentation marking algorithm of a sliding window, dynamically generating ACK (Acknowledgement Character) or NAK (Negative Attached Keying) feedback information according to the algorithm, and only retransmitting a lost data packet according to the received NAK feedback information. The RDMA out-of-order receiving and selective retransmission method supports Bitmap statistics of a sliding window or a segment marking method of saving a memory, is compatible with an existing protocol and realizes an ACK mechanism of selective retransmission, and avoids the problem of redundant transmission in a traditional mechanism. The invention further discloses computer equipment, a data transmission system and a computer readable storage medium.

The invention relates to the technical field of network communication, and provides a multi-level selection retransmission system based on an RDMA programmable switch gateway, and the technical scheme is that the multi-level selection retransmission system comprises a programmable switch, an RDMA server and an SACK / NAK trigger retransmission module; the programmable switch comprises an RDMA message cache module, an RDMA flow tail packet detection module and an active retransmission module; the RDMA message caching module is used for identifying an RDMA message and caching the RDMA message to an RDMA server; the RDMA flow tail packet detection module is used for identifying the flow tail packet loss condition of the RDMA message in the process of caching the RDMA message; the SACK / NAK triggering retransmission module is used for triggering a retransmission mechanism; and the active retransmission module is used for reading a flow tail packet of the lost RDMA message and returning the flow tail packet to the RDMA message cache module to finish retransmission operation. According to the invention, the programmable switch is combined with the RDMA, and active caching, rapid retransmission and tail packet loss detection are taken as core functions, so that the bottleneck of traditional RDMA transmission in packet loss retransmission and delay is solved.

When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement / negative acknowledgement (ACK / NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.

Methods, systems, and devices for wireless communications are described. For example, a method for wireless communications at a user equipment (UE), may include receiving a configuration indicating a feedback transmission scheme for reporting feedback associated with an error type. The UE may also detect an error in receiving a downlink transmission from a base station, where the detected error is of the error type. Then, the UE may select the feedback transmission scheme for transmitting a negative acknowledgement message for the downlink transmission based at least in part on the detected error being of the error type and the configuration. The UE may also transmit, to the base station, the negative acknowledgement message for the downlink transmission using the selected feedback transmission scheme.

A control method for error handling in a controller, a storage medium thereof, the controller, and a storage device. The controller is used in a first device capable of linking a second device in accordance with an interconnection protocol. The control method includes the steps of: processing, by the controller, first error information by sending a negative acknowledgement control message to the second device in accordance with the interconnection protocol, wherein the first error information indicates a first error that occurred when the controller performs data reception at a protocol layer in accordance with the interconnection protocol; and setting error handling state data to indicate that error handling is declared for the first error information, so that the controller does not handle a sequence number error that occurs after the first error until the error handling state data is set to indicate that the error handling is undecleared.

A WTRU and a method implemented by the WTRU are disclosed. The WTRU includes a processor and a memory configured to: determine to transmit one or more of hybrid automatic repeat request (HARQ) acknowledgement or negative acknowledgement (ACK / NACK) information and scheduling request (SR) information in a physical uplink control channel (PUCCH) transmission; determining a first cyclic shift to be applied to a first symbol of the PUCCH transmission and a second cyclic shift to be applied to a second symbol of the PUCCH transmission, where the first cyclic shift and the second cyclic shift are different, and wherein the first cyclic shift and the second cyclic shift are determined from a plurality of cyclic shifts based on the HARQ ACK / NACK information and the SR information to be transmitted in the PUCCH transmission indicating whether a positive SR or a negative SR; and transmitting the HARQ ACK / NACK information and the SR information in the first symbol of the PUCCH transmission using the first cyclic shift and in the second symbol of the PUCCH transmission using the second cyclic shift.

The present application relates to the technical field of communications, and provides a communication method and apparatus. The method comprises: receiving a first transport block, wherein the first transport block comprises a first check code and a second check code, the first check code is used for error detection of first information, and the second check code is used for error detection of second information; and upon determining that the first check code fails verification, or the second check code fails verification and an error rate of the second information is greater than or equal to a first threshold, generating a negative acknowledgment (NACK). By means of the described solution, whether to generate a NACK is determined on the basis of the varying importance of information in the transport block, thereby reducing unnecessary retransmissions of the transport block, improving system transmission efficiency.

Methods, apparatus, systems and procedures to manage a multicast communication to a multicast group implemented by a respective wireless transmit / receive unit (WTRU) of WTRUs in the multicast group are disclosed. One representative method includes receiving, by the respective WTRU of the multicast group, a configuration, the configuration indicating a Random Access Channel (RACH) preamble to use for a negative acknowledgement (NACK) response to a multicast transmission to the respective WTRU, monitoring, by the respective WTRU, for data of the multicast transmission, determining, by the respective WTRU, whether the monitored for data was successfully received; and on condition that the monitored for data was not successfully received, sending, by the respective WTRU, the RACH preamble indicated by the received configuration.

A WTRU and a method implemented by the WTRU are disclosed. The WTRU comprises a processor and a memory configured to: receive downlink control information (DCI) for downlink transmission, the DCI comprising a physical uplink control channel (PUCCH) parameter; selecting at least one cyclic shift indicating a hybrid automatic repeat request (HARQ), wherein the HARQ feedback for the downlink transmission corresponds to one of a HARQ acknowledgement (ACK) or a HARQ negative acknowledgement (NACK) for the downlink transmission; and transmitting the PUCCH transmission via one or more resource blocks using the selected at least one cyclic shift.

The embodiments of the present application provide a packet loss processing method, gateway, and device, relating to the field of network technology, and are applied to a first gateway, the first gateway being located on a transmission path between a first host and a second host. The method comprises: receiving a first message sent by the first host; determining whether packet loss has occurred based on the PSN of the first message; if it is determined that packet loss has not occurred, updating the first received PSN to the PSN of the first message, and forwarding the first message to a second gateway located on the transmission path between the first gateway and the second host; if it is determined that packet loss has occurred, sending a first NAK to the first host, the first PSN carried in the first NAK being calculated based on the current first received PSN, so that the first host retransmits a message with a PSN greater than or equal to the first PSN. Applying the solution provided by the embodiments of the present application can reduce bandwidth wasted when processing packet loss.

Methods, systems, and devices for wireless communication are described. A wireless device may receive a configuration including a first set of one or more parameters for an automatic repeat request (ARQ) procedure associated with a radio link control (RLC) entity of the wireless device. At least one parameter of the first set of one or more parameters is associated with a plurality of values. The wireless device may select a value of the plurality of values based at least in part on a second set of one or more parameters. The wireless device may transmit a negative acknowledgment (NACK) for a protocol data unit (PDU) of a set of one or more PDUs, and drop the PDU based at least in part on the at least one NACK and the selected value of the plurality of values for the ARQ procedure.

The invention provides a communication method and device, and relates to the technical field of communication. The method comprises the steps that a first transmission block is received, the first transmission block comprises a first check code and a second check code, the first check code is used for error detection of first information, and the second check code is used for error detection of second information; and determining that the first check code has a check error, or the second check code has a check error and the error rate of the second information is greater than or equal to a first threshold, and generating a negative acknowledgement (NACK). According to the scheme, whether the NACK is generated or not is judged according to different importance of the information in the transmission block, unnecessary retransmission of the transmission block is reduced, and the transmission efficiency of the system is improved.

Apparatuses, systems, and techniques to increase performance of a data communication system during an interconnection portion fault or failure are described. A negative acknowledgement is caused to be sent to a transmitter of information based, at least in part, on whether a degradation of one or more portions of an interconnect on which the information is to be transmitted is detected.

The invention discloses a high-throughput electromyographic signal communication and protocol construction method based on a Type-C USB interface, and relates to the technical field of man-machine interface signal communication.The method comprises the steps that a physical layer data transmission channel is constructed, uplink data are transmitted through a parallel port data line, and downlink data are transmitted through a serial port data line; defining a data packet structure; designing a response detection mechanism: formulating a verification standard of a data packet, verifying the data packet by a receiving end according to the verification standard after the sending end sends the data packet, and sending a communication state packet of which the packet label is ACK or NAK; the sending end resends the data packet after receiving the data packet of which the packet label is NAK; a timeout retransmission mechanism is designed; if the sending end does not receive the confirmation signal of the receiving end within the preset time, the sending end retransmits the data packet; and designing a communication management mechanism which comprises a data path establishment mechanism, a communication detection mechanism and a communication restart mechanism. According to the invention, low-delay and high-stability communication is realized, real-time and reliable operation of the system is ensured, and the requirement of high synchronism is met.

The present application discloses a UFS self-detection method, an electronic device, and a storage medium. After the UFS receiver receives the check frame sent by the UFS transmitter, the frame detection module compares the check frame with the receiving ability of the UFS receiver. When the comparison of the check frame is incorrect, the receiving ability of the UFS receiver is adjusted and a negative acknowledgment message is sent to the UFS transmitter. After receiving the negative acknowledgment message, the UFS transmitter sends the check frame again to the UFS receiver with the adjusted receiving ability. The embodiments of the present application can improve the stability and compatibility of UFS communication.

The present disclosure provides a method and system for retransmitting only information bits. A transmitter sends a first signal to a receiver, where the first signal includes a first bit sequence of length M1, and the first bit sequence includes N1 information bits and (M1 – N1) redundant bits; if the receiver incorrectly receives the first bit sequence, the receiver sends a retransmission request (Negative Acknowledge, NACK) back to the transmitter. The transmitter sends a second signal including a second bit sequence as a response, where the second bit sequence includes N2 of the N1 information bits of the first bit sequence, but does not include any redundant bits, where 1 ≤ N2 ≤ N1.

The application discloses a multicast communication HARQ feedback method and device and equipment, and relates to the technical field of communication. The method is applied to a first UE, and comprises the following steps: receiving first sidelink control information (SCI) sent by a second UE; in the case that the HARQ feedback mode of the first SCI is NACK only and a negative acknowledgement (NACK) is fed back to the second UE, if the second SCI sent by the second UE is not successfully received at a resource position reserved by the first SCI, and in the case that the second UE is not in a scene where resources at the resource position reserved based on the first SCI are preempted, a NACK is sent to the second UE. The scheme provided by the application reduces the probability of misjudgment as an ACK in the NACK only feedback mode, and improves the system performance in the NACK only mode.

An embodiment of the present application provides a data transmission method, apparatus, device, and computer-readable storage medium. The method includes: sending a data packet to a receiving end; when receiving a negative acknowledgment message corresponding to the data packet returned by the receiving end, obtaining a packet loss parameter of the receiving end within a preset time period before the current moment; determining a retransmission count and a retransmission interval corresponding to the receiving end according to the packet loss parameter; and retransmitting the data packet at least twice according to the retransmission count and the retransmission interval. Through the present application, the time consumed for retransmitting lost packets can be greatly reduced, so that the lost packet retransmission scheme of the embodiment of the present application can be widely applied to applications with high real-time requirements.

The invention relates to the technical field of high-speed interconnection, and discloses a high-speed serial interface CRC (Cyclic Redundancy Check) error quick response method, which comprises the following steps that: a sending end synchronously caches a sent data packet in a synchronous cache register according to a sequence number of the sent data packet while continuously sending the data packet, and a receiving end respectively performs CRC check on each data after receiving the data, after the CRC verification is passed, a sequence number of the next data is recorded in the expected receiving register, an Ack response packet that the sequence number is equal to a sequence number-1 which is newly recorded in the expected receiving register is sent out, and after the CRC verification is not passed, a Nak response packet with the sequence number-1 which is newly recorded in the expected receiving register is sent out; the sending end receives the Ack response packet and performs CRC (Cyclic Redundancy Check); after receiving the Nak response packet, the sending end performs CRC verification; wherein the CRC check does not pass the step of receiving the wrong data packet or the wrong response packet. According to the invention, the data (changed into the Ack / Nak type) with any distortion is quickly subjected to Nak response carrying the latest progress, and the effective bandwidth is improved.

Aspects described herein relate to transmitting noncoherent peaky waveforms including multiplexing message data, to be transmitted to a receiving node, with redundancy bits on a per-message or per-symbol basis, transmitting, to the receiving node, the multiplexed message data and redundancy bits in a different subset of assigned subcarriers in each of multiple symbols of a noncoherent transmission according to a duty cycle, receiving, from the receiving node, a negative-acknowledgement (NACK) feedback for at least a portion of the message data or redundancy bits, and retransmitting, to the receiving node and based on receiving the NACK feedback, at least the portion of the message data or redundancy bits. Other aspects relate to receiving the multiplexed data transmissions, sending the NACK feedback, and receiving retransmissions of the multiplexed data.

The application provides an implementation method and device of lossless network port-to-port cache sharing, divides total cache space on the receiving side into port private space and multi-port shared space, sets an upper limit value of the shared space available to each port, calculates a credit value representing the total remaining space of the port after correction on the sending side based on the remaining value of the port private space and the remaining value of the corrected shared sub-space, feeds back to the sending side, initiates data packet transmission when the sending side device satisfies a preset packet sending condition based on the credit value, performs retransmission checking when the port on the receiving side receives a data packet, judges whether the remaining cache space is sufficient, stores or discards the packet, triggers an ACK / NAK / CNAK response, and sends the response to the sending side device, analyzes the packet sequence number in the response when the sending side device receives the response, and performs a retransmission operation or releases the packet retransmission cache space. The scheme of the application improves the cache utilization rate.

Methods, systems, and devices for wireless communication are described. The described techniques provide for improving negative acknowledgment (NACK) feedback from a user equipment (UE) to limit self-interference during full-duplex communications with a base station. After failing to receive a downlink transmission from a base station, a UE may generate feedback associated with self-interference at the UE to transmit to the base station. The UE may then transmit a report to the base station indicating that the UE failed to successfully decode the downlink transmission, and the UE may include the feedback associated with self-interference at the UE in the report. The base station may receive the report and adapt configurations used for full-duplex communications with the UE based on the feedback to limit self-interference at the UE during full-duplex communications.

Methods, systems, and devices for wireless communication are described. A wireless device may receive a configuration including a first set of one or more parameters for an automatic repeat request (ARQ) procedure associated with a radio link control (RLC) entity of the wireless device. At least one parameter of the first set of one or more parameters is associated with a plurality of values. The wireless device may select a value of the plurality of values based at least in part on a second set of one or more parameters. The wireless device may transmit a negative acknowledgment (NACK) for a protocol data unit (PDU) of a set of one or more PDUs, and drop the PDU based at least in part on the at least one NACK and the selected value of the plurality of values for the ARQ procedure.

The invention provides a communication method and device, relates to the technical field of communication, and can reduce data processing time delay, increase retransmission opportunities and improve reliability of data transmission. The method comprises the following steps: receiving first data from a first device at a first time unit, determining first feedback information and second feedback information according to the first data, sending the first feedback information to the first device at a second time unit, and sending the second feedback information to the first device at a third time unit. The first feedback information indicates a first acknowledgement ACK or a first negative acknowledgement NACK, the second feedback information indicates a second ACK or a second NACK, the first feedback information is determined through a first mode, the second feedback information is determined through a second mode, the first mode is different from the second mode, the first mode and the second mode are both based on a hybrid automatic repeat request (HARQ), and the first feedback information indicates a first acknowledgement ACK or a first negative acknowledgement NACK. The third time unit is later than the second time unit.

The present disclosure provides a method and system for energy- aware random access scheduling and resource allocation in wireless networks comprising ambient Internet of Things (IoT) devices. A paging signal is broadcast by a network entity, defining a time-frequency contention grid used by ultra-low power, battery-less devices to transmit random access messages via a slotted ALOHA protocol. Each message includes a unique device identifier, energy status, and message size. The network processes these messages to detect contention outcomes and allocates communication resources accordingly. Devices receiving acknowledgment (ACK) proceed with uplink transmission, while those receiving negative acknowledgment (NAK) reattempt access based on a probabilistic backoff scheme with a retry limit. The number of contention slots is dynamically optimized based on network load, latency goals, and energy constraints to minimize collisions and improve scalability. The invention enables efficient, fair, and low-power communication in dense IoT deployments, particularly within massive Machine-Type Communication (mMTC) scenarios in 5G and 6G networks.

The present application relates to the technical field of communications, and provides a communication method and an apparatus, which can reduce data processing delay, increase retransmission opportunities and improve the reliability of data transmission. The method comprises: receiving first data from a first apparatus in a first time unit; determining first feedback information and second feedback information on the basis of the first data; sending the first feedback information to the first apparatus in a second time unit; and sending the second feedback information to the first apparatus in a third time unit. The first feedback information indicates a first acknowledgement (ACK) or a first negative acknowledgement (NACK), and the second feedback information indicates a second ACK or a second NACK, the first feedback information being determined in a first mode, the second feedback information being determined in a second mode, the first mode being different from the second mode, both the first mode and the second mode being based on a hybrid automatic repeat request (HARQ), and the third time unit being later than the second time unit.

The invention discloses a method and a system for solving I2C (Inter-Integrated Circuit) interface communication conflicts. The method for solving the I2C interface communication conflict according to the embodiment of the invention comprises the following steps of: initializing an I2C interface, configuring a direct memory access channel, and configuring a read command automatic negative response; receiving a write command frame; after application layer scheduling is completed, closing the read command automatic negative response; sending the current data frame; and restarting the read command automatic negative response according to the I2C interface, and restarting the read command automatic negative response according to the I2C interface and the read command automatic negative response. And different interfaces are connected with different devices. According to the embodiment of the invention, the system for solving the communication conflict of the I2C interface comprises the CPU, the direct memory access module, the arbitration module, the I2C automatic NAK module and the I2C stop signal transmission termination module, so that the communication conflict between the I2C interface and other interfaces in communication is solved; and the mutual interference problem and the transmission error problem in a concurrent communication scene of the I2C and other interfaces are avoided.

The present invention discloses a pipeline transmission method for two adjacent hop underwater acoustic links driven by routing, comprising the following steps: S1: Node A1 initiates an RTS channel access request to Node B; S2: After receiving the RTS channel access request, Node B responds with a CTS message to all downstream neighboring nodes and an upstream neighboring node C; S3: After receiving the CTS message from Node B, each Node A sends data to Node B according to the command; S4: After receiving the data, Node B generates a new data packet and sends it to the upstream neighboring node C and all downstream neighboring nodes A; S5: Node C opportunistically receives the data packet from Node B, while neighboring node A also receives the data packet, performs ACK / NAK determination, and completes channel error control. The present invention reduces the number of channel reservations in the network, reduces the end-to-end delay and energy consumption of the underwater acoustic sensor network, and can improve the overall performance of the underwater acoustic sensor network.