2064 results about "Retransmission" patented technology

The invention discloses a computer network data secure transmission system and method, and particularly relates to the technical field of network data secure transmission, and the system comprises a dynamic key management module which generates a key seed through a quantum random number generator, generates a dynamic key bound with a data packet in combination with a timestamp, and transmits the dynamic key to a server; after being encrypted by a receiving end public key, the data are transmitted through an independent verification channel; the dual-path transmission control module is used for establishing dual channels of a main path and a shadow path, a data packet of the main path is embedded into a random camouflage protocol header to simulate a non-sensitive protocol, and a blank data packet is filled in the shadow path to maintain traffic characteristics; according to the real-time verification engine, a receiving end constructs an encrypted hash tree to achieve fragment-level integrity verification, and meanwhile, requests key state three-state verification from the key management module. Through key dynamic generation and separation transmission, dual-path adaptive fragmentation distribution, fragmentation hash tree reconstruction and key linkage verification, and abnormal triggering fragmentation level retransmission, the problems of long-term effectiveness of a static key, predictable transmission path and verification lag are solved.

The invention provides an FPGA program loading and updating method and system, and relates to the technical field of FPGA configuration management. The FPGA program loading and updating method comprises the following steps: S1, based on an RS422 physical layer protocol, adopting a self-adaptive block verification algorithm, acquiring a signal-to-noise ratio parameter in real time through a channel quality monitoring module, dynamically adjusting the size of a data packet, and implementing a double-buffer alternate receiving mechanism; and verifying each data block by using cyclic redundancy check and serial number continuity detection, discarding abnormal data packets with bit error rates exceeding the limit, and generating a data block set passing verification. Through combination of an adaptive block check algorithm and channel quality dynamic monitoring, real-time optimization and adjustment of the size of a data packet in a transmission process are realized, transmission requirements in different channel environments are effectively adapted, the data retransmission probability is reduced, and through cooperative application of a double-buffer alternate receiving mechanism, cyclic redundancy check and a serial number tracking technology, the transmission efficiency is improved. And continuity and integrity of data receiving are ensured.

The embodiment of the invention provides a cross-network data exchange method, electronic equipment, a storage medium and a program product, and the method comprises the steps: receiving transmission data, determining the identification information of the transmission data according to the service identification, timestamp and segment sequence number of the transmission data, and determining the verification value according to the performance requirement, the security requirement and the data integrity; the hash algorithm is obtained by performing hash operation on the segmented data; according to the identification information, judging whether the transmission data is duplicated data or not; judging whether the transmission data is complete data or not according to the verification value; whether the transmission data is lost data or not is judged according to the segment serial number, if yes, a retransmission instruction is sent to the sending end equipment, the data segments which are repeatedly transmitted can be accurately recognized through the unique identification information, redundant storage and processing are avoided, the data repetition problem is solved from the source, then the integrity of the data is verified according to the verification value, and the data transmission efficiency is improved. And the lost data end is judged according to the segment sequence number, so that the problem of data loss is solved.

A method can include receiving, by a wireless device, radio resource control (RRC) messages that include parameters of a multicast and broadcast service (MBS). The parameters can include a discontinuous reception (DRX) hybrid automatic repeat request (HARQ) round trip time (RTT) timer; a DRX retransmission timer; and a feedback indicator indicating whether HARQ feedback is enabled. The method can also include receiving a group common downlink control information (DCI) scheduling a transport block (TB) of the MBS. The method can further include, in response to the feedback indicator indicating that HARQ feedback is enabled: transmitting a HARQ feedback with a negative value based on the TB being unsuccessfully decoded; and starting the DRX HARQ RTT timer after transmitting the HARQ feedback. The method can additionally include starting the DRX retransmission timer based on an expiry of the DRX HARQ RTT timer.

According to one aspect of the present disclosure, there is provided a terminal including a control unit that determines a Modulation and Coding Scheme (MCS) and a number of repetitions from an MCS field in an uplink grant for repetitive transmissions of an uplink data channel for retransmission in a random access procedure, and a transmission unit that repeatedly transmits the uplink data channel for retransmission in the random access procedure in accordance with the MCS and the number of repetitions.

The invention relates to an industrial Internet of Things secure communication method and system based on OpenHarmony, and the method comprises the following steps: collecting node features of to-be-communicated equipment, carrying out the routing selection through combining network performance parameters, and generating a main and standby transmission path combination. And performing fragmentation encryption on the industrial production data sent by the source equipment to form encrypted fragmentation data. And sending the encrypted fragmented data through the main transmission path, and synchronously executing integrity verification to obtain a verification result. Whether transmission abnormity occurs in the main path or not is judged according to the integrity verification result, if yes, switching to the standby transmission path is triggered, encrypted fragmented data corresponding to the abnormity is retransmitted, it is ensured that the data are complete and reliable, and finally the data are recombined into complete industrial production data at a receiving end. The technical problems that a rapid detection and response mechanism for abnormal behaviors is lacked in the data transmission stage, and it is difficult to switch a standby path in time and complete data retransmission when transmission abnormity occurs are solved.

The invention discloses a data transmission system and method for improving PCIe retransmission efficiency and a switchboard, the data transmission system comprises the switchboard, and a source end and a target end which are electrically connected with a port of the switchboard, the port comprises a first buffer area and a data packet unloading module, the first buffer area is electrically connected with a subordinate port of the first buffer area to form a first channel, and the data packet unloading module is electrically connected with the subordinate port of the first buffer area; the data packet unloading module is electrically connected with the lower-level port to form a second channel, and the priority of the second channel is higher than that of the first channel; the source end transmits a data packet to the target end based on the first path, and if the residual space of the first buffer area of the port is insufficient, the data packet is transmitted to a data packet unloading module; the data packet unloading module unloads effective loads in the data packet to obtain an unloaded data packet, and transmits the unloaded data packet to the lower-level port through the second channel so as to transmit the unloaded data packet to the target end; and the target end sends a retransmission request to the source end in response to the received unloading data packet. According to the invention, the delay of data transmission can be reduced, and the retransmission efficiency of PCIe data is improved.

The invention discloses an intelligent building multi-dimensional monitoring system supporting edge computing and cross-terminal collaborative management, and relates to the technical field of intelligent buildings, the intelligent building multi-dimensional monitoring system comprises a multi-area edge monitoring node and an asynchronous communication cloud management platform, the edge node is provided with a lightweight dynamic collaborative engine, a node database and equipment management and control module, and a management and control terminal device; data are collected and standardized, simple / complex events are identified, risk levels are divided, and autonomous networking is carried out to form a temporary collaborative cluster when the risk is high; the data interaction module adopts UDP lightweight protocol low-delay transmission and local retransmission to guarantee data integrity, the cloud platform stores event processing abstracts, analyzes historical data optimization strategies and rules and silently issues in idle periods, the visual module assists monitoring and decision making, the system realizes distributed sensing and collaborative management and control, cloud dependence is reduced, and the real-time performance of the system is improved. The event response efficiency and the resource utilization rate are improved.

The invention relates to a method for performing a link adaptation in an uplink transmission between a user equipment, UE, and a network node in a telecommunication network, the method comprising:obtaining a first value of a Modulation and Coding Scheme, MCS, for a future transmission at transmission time interval k in the uplink transmission, the first value of MCS being determined on the basis of a Signal to Interference and Noise Ratio, SINR, estimated by the network node for the future transmission at transmission time interval k; andpredicting a second value of the MCS for the future transmission at transmission time k by using a Q-learning process having as input the first value of MCS, first data indicating whether the future transmission at transmission time k is a first transmission or a retransmission, and second data indicating whether a feedback acknowledgement, ACK / NACK, of a transmission that took place at transmission time interval k−1 is equal to ACK or NACK.

The invention discloses a data transmission method and computer equipment, and relates to the technical field of data transmission. The method comprises the following steps: acquiring a sending work request containing a local sending queue pair number and a work queue element; querying target sending information by taking a local sending queue number as an index; storing the working queue elements and the target sending information as operation contexts into an internal memory of a network card of a request end, and recording corresponding indexes; assembling a target data packet based on the target sending information and the memory index; receiving a feedback data packet of the target data packet and extracting a memory index and a serial number carried by the feedback data packet; if the feedback data packet is a correct confirmation data packet, judging that the sending of the work request is completed and releasing the context; and if the feedback data packet is a confirmation failure data packet, calculating a retransmission data initial address and organizing retransmission. The technical problem that the effective connection number of network cards is limited by hardware resources in the prior art is solved, and the technical effect of supporting large-scale network parallel communication is achieved.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure relates to a method and transmitting device (101) for handling enhanced RLC transmit operation for XR. The method includes receiving the discard indication at RLC layer from upper layer to discard at least one RLC SDU associated with the SN. Further, the method includes abandoning or stopping the transmission or retransmission of at least one RLC SDU, segment of the RLC SDU, and RLC data PDU, when the discard indication is received for the at least one corresponding RLC SDU from the upper layer.

The invention relates to a message retransmission method, a message retransmission device and a chip. The method comprises the following steps that: destination end equipment receives a first data message sent by source end equipment, wherein the first data message comprises an identifier of a target transmission path for transmitting the first data message and a packet sequence number of the first data message; the destination end device determines a currently missing second data message corresponding to the target transmission path according to the packet serial number of the first data message; and the destination end equipment sends a selection confirmation message to the source end equipment, wherein the selection confirmation message is used for indicating the source end equipment to retransmit the second data message. By adopting the method, the transmission efficiency of the data message can be improved.

The invention relates to the technical field of electric digital data processing, in particular to a data transmission system and method based on a USB interface. The system comprises a main control device, an intermediate device and N external devices, wherein the main control equipment is connected with the intermediate equipment through a USB (Universal Serial Bus) interface, and the intermediate equipment is respectively connected with N external equipment. According to the embodiment of the invention, data transmission can be carried out on the external equipment based on the data security type of the external equipment, whether retransmission is carried out or not is detected in the data transmission process, and different requirements of different external equipment on data security are met, so that the data reliability is ensured, and the reliability and the intelligent level of the data transmission process are improved.

The invention discloses a fusion terminal data processing method and system based on frame repair, which are applied to the technical field of intelligent communication, and the method comprises the following steps: detecting the integrity of a received data frame, and taking an incomplete data frame as a damaged data frame; identifying the data type of the data segment of the damaged data frame according to the damage condition of the damaged data frame, the adjacent data frame of the damaged data frame and the sample library, and judging whether the damaged data frame is repairable or not; and repairing the repairable damaged data frame according to the data type, verifying the repaired data segment through the verification segment, and using the repaired damaged data frame as a normal data frame. According to the method and the device, the data segments of the data frames are repaired, wrong retransmission in the network can be effectively reduced, the integrity and timeliness of data transmission are improved, channel blockage in the network caused by network fluctuation is avoided, and the method and the device have extremely high applicability.

A wireless transmit receive unit (WTRU) may be configured to transmit uplink control information such as Hybrid Automatic Retransmission Request (HARQ) Acknowledgement or Negative Acknowledgement (ACK / NACK) using a sequence. The HARQ ACK / NACK may comprise one bit 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 transmissions. The WTRU may be further configured to receive, from a physical downlink control channel (PDCCH), an indication of a resource block for transmitting the HARQ ACK / NACK.

A communication method and apparatus, the method comprising: when a terminal device submits first data to a first protocol layer, starting a first timer, during the operation of the first timer, receiving feedback information for the first submission, and stopping and / or resetting the first timer; and when the first timer is overtime, determining to retransmit the first data. The first timer may be used to determine whether to retransmit the first data. When the first timer is overtime, it means that feedback information of the first data is not received during operation of the first timer, retransmission of the first data is considered. Through the scheme, whether the first data is retransmitted or not can be determined as early as possible, so that the requirements of high reliability and low delay can be met.

A system and method for providing reliable, legally compliant access to geographically restricted ATSC television signals via user-owned devices hosted in a datacenter. The invention verifies the physical address of each applicant to ensure eligibility within the designated market area before installation. It eliminates the need for rooftop or indoor antennas, resolving common ATSC reception challenges, including interference, terrain obstruction, and lightning risks. Designed for ease of use by non-technical users, the system provides consistent high-quality reception through a managed datacenter infrastructure. The invention complies with legal boundaries set by the U.S. Supreme Court's ruling in ABC v. Aereo by ensuring individualized device ownership and avoiding centralized retransmission. An optional encrypted group addressing mode further reduces energy and hardware redundancy while enforcing regional access through a conditional access system with access limited to persons with validated addresses and members of the datacenter.

The invention discloses a starting method for a pre-starting execution environment, computer equipment and a related product, and relates to the technical field of computers, the method comprises the following steps: when a first network driver triggers a target unloading process due to loading of a second network driver and the first network driver has sent a network release message in the target unloading process, starting the target unloading process; monitoring an overtime event and a network reply message event of the monitoring timer; when the timeout event is monitored and the network reply message event is not monitored, triggering the first network driver to resend the network release message; and when the retransmission times exceed a preset retransmission threshold value, forcibly terminating the target event polling operation, and transferring the network control right from the first network driver to the second network driver, so that the second network driver takes over and continues to execute the starting process based on the own network protocol stack. The technical problem of deadlock in the starting process of the pre-starting execution environment in related technologies is solved, and the technical effect of improving the starting reliability of the pre-starting execution environment is achieved.

A method comprises receiving, by a wireless device, a first physical downlink control channel (PDCCH) order initiating a random access procedure associated with early timing advance acquisition procedure of a layer 1 and / or 2 triggered mobility (LTM) procedure. The method further comprises, based on the first PDCCH order, setting a preamble power ramping counter (PPRC) to an initial value, and transmitting a first preamble via the first candidate cell, with a first power. The method further comprises receiving a second PDCCH order, and transmitting, with a second power determined based on increasing the PPRC by one, a second preamble via the first candidate cell, based on: a first field of the second PDCCH order indicating the first candidate cell and a second field of the second PDCCH order indicating a retransmission.

A method by which a first device performs wireless communication and a device for supporting same are provided. The method may comprise the steps of: acquiring sidelink (SL) positioning reference signal (PRS) configuration information including information related to an SL PRS resource; receiving an SL PRS on a first resource; and transmitting SL PRS retransmission request information on a second resource. For example, the second resource can be determined on the basis of the comb size of the SL PRS and / or a resource element (RS) offset of the SL PRS.

The invention discloses a CXL protocol extension method, device and system based on the Ethernet. The method comprises the following steps of: carrying out long-distance expansion interconnection on a CXL (Compute Express Link) protocol by using Ethernet as a physical transmission medium; by bearing the CXL protocol on the Ethernet, the range of memory pooling is expanded from the rack level to the whole data center (kilometer level), and the potential of the CXL technology is thoroughly released; through protocol translation, label management and flow control realized by pure hardware, an operating system kernel and a software protocol stack are bypassed, so that the end-to-end memory access delay is far lower than that of any software-based network storage scheme, and a reliable request-response tracking and timeout retransmission mechanism is realized through a hardware label manager. By distinguishing the control flow and the data flow, differentiated QoS guarantee is provided for different types of memory flows, and the stability of the system under high load is ensured.

In a communication method, a terminal device sends uplink data corresponding to M HARQ processes, and receives first indication information, where the first indication information indicates whether to start a DRX uplink retransmission timer corresponding to N HARQ processes in the M HARQ processes; and the terminal device starts the DRX uplink retransmission timer when the first indication information indicates to start the DRX uplink retransmission timer, and receives second indication information when the DRX uplink retransmission timer runs, where the second indication information indicates retransmission of uplink data corresponding to the N HARQ processes. The terminal device can determine, in time based on the first indication information, whether to start the DRX uplink retransmission timer. A terminal device is configured with computer instructions to perform the described method.

The invention relates to a timeout retransmission optimization method and device of a TCP layer, and belongs to the technical field of WIFI wireless communication, and the timeout retransmission optimization method of the TCP layer comprises the following steps: obtaining transmission result information of each data frame in an MAC layer, and determining a channel state index parameter of the MAC layer in a target time period based on the transmission result information; and after the TCP layer detects an ACK timeout event, determining a retransmission strategy of the TCP layer based on the channel state index parameter. According to the invention, the timeout retransmission strategy of the TCP layer is optimized, so that the data throughput of the WIFI wireless communication system is ensured, and the data transmission performance of the WIFI wireless communication system is effectively improved.

The embodiment of the invention provides an Internet of Things control system and method, electronic equipment, a storage medium and a program product, and relates to the technical field of industrial Internet of Things. The system comprises a connection management module used for establishing and maintaining connections between a plurality of Internet of Things devices and a plurality of MQTT servers corresponding to the Internet of Things devices; the dynamic equipment mapping module is used for mapping the data of the Internet of Things equipment to the MQTT server through the configuration file; and the message queue and network disconnection continuous transmission module is used for putting the message into the tail of the message queue to continuously transmit the message if the MQTT client instance corresponding to the Internet of Things equipment is detected to be in a network disconnection state when the message is published to the MQTT server. According to the scheme, dynamic expansion of heterogeneous equipment in the industrial Internet of Things, parallel butt joint of multiple cloud platforms, network disconnection continuous transmission and two-way communication capability are realized.

A terminal includes a transmitter that transmits a second signal specifying a resource for an initial transmission of a first signal on a sidelink; and a controller that selects, reserves, or pre-reserves a resource for the initial transmission of the first signal on the sidelink and at least one of one or more resources for one or more retransmissions of the first signal on the sidelink.

A communication method and apparatus to reduce a waiting latency in a retransmission process. A terminal device receives a first PDSCH from a network device. In response to failing to decode data carried on the first PDSCH, the terminal device sends an SRS to the network device on a first time-frequency resource. In response to the network device not receiving feedback information of the first PDSCH, or receiving feedback information of the first PDSCH that is a NACK, the network device retransmits the first PDSCH based on a result of measuring the SRS. After determining that the first PDSCH fails to be decoded, the terminal device directly sends the SRS to the network device by using the first time-frequency resource.

This UE can: transmit, on the basis of a configured grant, a physical uplink shared channel (PUSCH) including a transport block; and determine, on the basis of whether a packet delay budget of the transport block has expired, whether retransmission is performed according to a downlink control information (DCI) format if the DCI format related to the transport block is received.

The invention relates to the technical field of data transmission, and discloses a gas meter information secure transmission method based on response function compensation, which comprises the following steps: collecting multi-source data and network signal quality information of a gas meter; according to a real-time network environment and physical conditions, data transmission parameters are dynamically adjusted through a response function compensation algorithm, when data transmission in a static time slot fails, a dynamic retransmission time slot is automatically allocated for retransmission, a retransmission frequency threshold value is set, and packet loss caused by channel errors or collision is compensated through a retransmission response function; a multi-layer encryption mechanism is adopted to encrypt transmission data, an optimal transmission channel is intelligently selected according to network conditions, adaptive hybrid communication is performed through star flash short-distance communication or Wi-Fi wide-area transmission, and a response compensation mechanism of multi-dimensional environmental parameters is established based on a signal transmission model; transmitting the encrypted data to a monitoring management platform through a secure channel; therefore, safety early warning decision is realized, and dynamic accurate transmission and active safety protection are realized.

Provided, according to one embodiment of the present disclosure, is a method for a first device carrying out sidelink communication. The method comprises the steps of: starting a first timer associated with a PSFCH resource on the basis that sidelink HARQ feedback information is not transmitted to a second device through the PSFCH resource on the basis of a first priority associated with the sidelink HARQ feedback information; on the basis that the first timer has expired, starting a second timer associated with a sidelink HARQ retransmission packet for a PSSCH or SCI; and receiving the sidelink HARQ retransmission packet from the second device after the second timer starts.

A unification method based on data acquisition interfaces of different SCADA (supervisory control and data acquisition) production monitoring systems of a sewage plant comprises the following steps: analyzing private protocols such as Modbus through protocol conversion middleware, and standardizing data streams; establishing association between the unique identifier and the data stream by using an equipment mapping mechanism to form a data mapping table; a data normalization algorithm is adopted to unify a field format, and missing values are filled through linear interpolation. And an increment adaptation module is designed to realize compatibility of new and old system interfaces, and AES-256 encryption is combined to guarantee transmission security. The transmission rate is dynamically adjusted based on the network state, and video and production data are fused. A multi-protocol environment is adapted through an adaptive protocol adjustment module, and finally data integrity is ensured by using a CRC check and retransmission mechanism. According to the scheme, a technical closed loop from protocol conversion to multi-source fusion is constructed, the problems of data island and compatibility of the SCADA system of the sewage plant are solved, and the data management efficiency and reliability are improved.