27 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.

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.

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.

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.

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.

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 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.

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.

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.

An apparatus and a method for a hybrid automatic repeat request (HARQ) feedback transmission are provided. A method for a HARQ feedback transmission includes receiving a multicast broadcast service (MBS) transport block (TB) from a base station, decoding the MBS TB, and transmitting, to the base station, a HARQ feedback in a form of a negative acknowledgement (NACK)-only report when the UE incorrectly decodes the MBS TB.

The application relates to the field of computer network communication and provides a long-distance RDMA tail packet loss recovery method based on in-network caching, which comprises the following steps: step one, NAK signal fast recovery, a detection mechanism is used to distinguish the packet loss position, a data center interconnection switch executes a differential strategy according to the packet loss position, for tail packet loss occurring at the source end side before entering a long-distance link, the data center interconnection switch immediately generates a negative acknowledgement (NAK) signal and feeds back to the sending end, so as to trigger the source end to fast retransmit the tail packet; step two, external caching and local retransmission, stream state recognition and storage server caching offloading, the data center interconnection switch analyzes the inbound RDMA flow. Through the control plane and the data plane: the data center interconnection switch serves as a stateful agent, the tail packet is cached to a storage server, so that the long tail delay caused by the tail packet loss and the dependence on a large cache server are avoided.

This application provides a method and apparatus for repairing multicast data forwarding. The method includes: establishing flow table entries for raw data packets destined for a multicast group; comparing the sequence number of a received raw data packet with the sequence number recorded in the flow table entry; when the sequence number of the received raw data packet is greater than the sequence number recorded in the flow table entry and is not consecutive; sending a multicast group packet loss notification message to a Software-Defined Networking (SDN) controller; and causing the SDN controller to construct a negative acknowledgment message with a repair sequence number and send it to the PGM device within the Practical General Multicast (PGM) network that is the nearest PGM device to the multicast source of the multicast group.

Disclosed in the present application are determining methods and apparatuses for a mapping relationship, a device, a medium and a program product, belonging to the field of wireless communication. A method comprises: receiving first signaling, the first signaling being used for configuring and / or activating a first mapping relationship, and the first mapping relationship being used for determining CB-level acknowledgement information or negative acknowledgement information. The methods disclosed in the present application support more efficient feedback on data reception statuses, and reduce feedback overhead.

The invention relates to a heterogeneous network interconnection adaptive UDP (User Datagram Protocol) transmission method and an intelligent networking arrangement system, and belongs to the field of network communication and intelligent networking, the method comprises the following steps: adding a custom extension header behind a header of a standard UDP protocol to form an adaptive UDP transmission framework AUDP message; in the AUDP mode, an intelligent forward error correction AI-FEC mechanism is adopted to dynamically adjust the proportion of redundant packets; and dynamically calculating a timeout retransmission threshold RTO calculation model, and carrying out detection and selective retransmission on lost packets in combination with a confirmation NAK rapid retransmission strategy. The method and the system provided by the invention can adapt to a heterogeneous network environment, and consider both low time delay and high reliability.

A communication method and apparatus resolve a problem that a terminal device frequently sends channel state information or an uplink reference signal, so that signaling overheads of the terminal device can be reduced. The method includes: determining a first feedback information set, and sending first channel state information or a first uplink reference signal to a network device when the first feedback information set meets a first condition. The first feedback information set includes at least one piece of feedback information, and the feedback information is a negative acknowledgment NACK or an acknowledgment ACK.

Provided in the embodiments of the present disclosure are a wireless communication method, a terminal device and a network device. The method includes: a terminal device determining Hybrid Automatic Repeat Request (HARQ) feedback information corresponding to a first Group Radio Network Temporary Identifier (G-RNTI), wherein the first G-RNTI is associated with one or multiple Physical Uplink Control Channel (PUCCH) resources configured for a first feedback mode, and the first feedback mode includes an HARQ feedback mode only feeding back Non-Acknowledgement (NACK)-included HARQ feedback information; and the terminal device sending, on one of the one or multiple PUCCH resources, NACK-included HARQ feedback information corresponding to the first G-RNTI. By the solution provided in the present disclosure, feedback can be provided for multicast or broadcast, such that a network may determine, according to the feedback, whether data retransmission is needed, thereby ensuring the reliability of service transmission.

The invention relates to the technical field of data transmission, and discloses a data transmission method and device based on a private protocol and a medium, the method is applied to a new energy centralized control system, the new energy centralized control system comprises a sending end, a receiving end and a forward isolation device, and the sending end and the receiving end establish connection through the forward isolation device. The method comprises the following steps: a sending end encapsulates target data and a data sequence number according to a forward message format to obtain a data packet, and transmits the data packet to a receiving end; the receiving end analyzes the data packet according to a forward message format to obtain target data and a data serial number, compares whether the data serial number is the same as an expected serial number or not to obtain a comparison result, converts the comparison result according to a reverse message format to obtain a response packet, and transmits the response packet to the sending end; the response packet is one of positive acknowledgement or negative acknowledgement; and the sending end determines whether to resend the data packet to the receiving end according to the response packet. According to the invention, reliable data transmission can be realized under the limitation of one-way communication.

Methods and system may be used for collision detection for orthogonal frequency division multiple access (OFDMA)-based random access. A wireless transmit / receive unit (WTRU) may receive, from an access point (AP), a first trigger frame triggering random access using OFDMA. The WTRU may transmit, to the AP, in response to the first trigger frame a trigger-based frame including user specific control information in a signal (SIG) field. The WTRU may receive an acknowledgment / negative acknowledgment (ACK / NAK) message indicating that the trigger-based frame was successfully detected at the AP or that the trigger-based frame was not successfully detected at the AP. The WTRU receive, from the AP, a scheduling retransmission frame including rescheduling information for STAs with corrupted UL transmissions. On a condition that the scheduling retransmission frame indicates that a collision of the trigger-based frame was detected, the WTRU may retransmit the trigger-based frame.