14 results about "NAK" patented technology

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.

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.

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 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 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 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.

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.

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.