14 results about "Protocol overhead" patented technology

The invention relates to the technical field of computers, discloses a heterogeneous computing low-delay communication method and system, and aims to solve the problem of high delay caused by high communication protocol overhead, lack of dynamic scheduling collaboration, memory migration redundancy and non-uniform cross-node communication abstraction in existing heterogeneous computing. The method comprises the following steps: receiving a task scheduling request and analyzing a task dependency graph; tasks are dynamically allocated based on node loads and link states; rDMA, NVLink or PCIe straight-through protocols are adaptively selected according to node types to establish communication channels; zero-copy data exchange is realized through a shared memory mapping buffer area; hardware timestamps are utilized to synchronize feedback delays with PTP to optimize scheduling. The system comprises a heterogeneous computing node cluster, a unified communication scheduling controller, a low-delay communication protocol stack, a shared memory mapping buffer area and a communication delay sensing task distributor. According to the scheme, the communication delay is remarkably reduced, and the throughput and the task execution efficiency are improved.

The embodiment of the invention provides a data packet transmission method, system, equipment and device and a storage medium. The data packet forwarding equipment supports a CXL protocol, and the data packet transmission method applied to the data packet forwarding equipment comprises the following steps: in response to receiving a data packet from sending equipment, storing the data packet in a cache corresponding to the sending equipment, the cache being pre-allocated to the sending equipment; and in response to a received data packet reading request from receiving equipment, triggering the receiving equipment to read the data packet from the cache in a memory access manner. Visibly, by adopting the technical scheme, the data packet is transmitted on the basis of read-write operation of the sending device and the receiving device on the cache based on a CXL protocol shared memory mode, an interface between devices does not need to be called depending on a driving program, and the data packet does not need to be packaged into a network data packet format for transmission, so that the overhead of a communication protocol can be reduced, and the communication efficiency is improved. Transmission delay is reduced, and transmission performance is improved.

The application provides an IPv6 message encryption and decryption method based on a quantum key application mechanism, which is realized by a sending end and a receiving end in cooperation, and the sending end and the receiving end exchange roles when transmitting back to realize the encryption transmission of messages in the opposite direction by the same processing procedure; the messages are directly encrypted by using quantum keys, and the message encapsulation uses the extensible characteristics of the IPv6 protocol, and a new extension message header is added in the header of the IPv6 message to record the parameters used for message encryption. The combination of the quantum key encryption and the message of the IPv6 is the innovation point in the application, the quantum key is directly used for encryption when the message is encrypted and decrypted, other key negotiation methods are not needed, and other network protocol negotiation keys are not needed, so that the scheme is safer and simpler. The application encapsulates the encrypted message by using the extensible characteristics of the IPv6 protocol, so that the encrypted message is still a standard IPv6 message, and the messages of the whole scheme follow the IPv6 protocol without additional protocol overhead.

This application relates to the field of computer technology and discloses a low-latency communication method and system for heterogeneous computing, aiming to solve the high latency problems caused by high communication protocol overhead, lack of dynamic scheduling coordination, redundant memory migration, and inconsistent cross-node communication abstractions in existing heterogeneous computing. The method includes: receiving task scheduling requests and parsing task dependency graphs; dynamically allocating tasks based on node load and link status; adaptively selecting RDMA, NVLink, or PCIe passthrough protocols to establish communication channels according to node type; achieving zero-copy data exchange through a shared memory mapping buffer; and utilizing hardware timestamps and PTP synchronization to provide latency feedback and optimize scheduling. The system includes a heterogeneous computing node cluster, a unified communication scheduling controller, a low-latency communication protocol stack, a shared memory mapping buffer, and a communication latency-aware task allocator. Through the above scheme, this application significantly reduces communication latency and improves throughput and task execution efficiency.

The invention discloses an equipment communication method and system based on a limited message transmission protocol, a terminal and a storage medium, and the method comprises the steps: obtaining an equipment communication task of a user, carrying out the analysis and processing, obtaining a task analysis result, and judging whether the equipment communication task is resource limited equipment communication or not; if the communication is the resource limited device communication, acquiring a limited message transmission protocol, and performing protocol stack construction according to the limited message transmission protocol to obtain a limited message transmission protocol stack architecture; and obtaining a to-be-communicated message of the first device, performing format processing on the to-be-communicated message according to the limited message transmission protocol stack architecture to obtain a target to-be-communicated message, and transmitting the target to-be-communicated message to the second device. According to the method and the device, the limited message transmission protocol is obtained by using the simplification processing to carry out communication between the devices, so that the protocol overhead and the analysis complexity are reduced, the resource consumption is reduced, the security is ensured, and the communication efficiency is improved.

The invention discloses a flow control method and device based on an AXI bus, a medium and a product, and the method comprises the steps: obtaining a first credit value needed by the calculation of a matched first data volume before a write address and write data are continuously sent to a first opposite-end chip in a multi-chip system; and querying a locally maintained target write operation counter matched with the first opposite-end chip, judging whether the current credit value is greater than or equal to the first credit value, if so, updating and storing a calculation result obtained by subtracting the first credit value from the current credit value in the target write operation counter, and continuously sending the write address and the write data to the first opposite-end chip. Whenever target write response information fed back by the first opposite-end chip is received, a first release credit value is obtained, and a result obtained by adding the current credit value and the first release credit value is updated and stored in the target write operation counter. According to the technical scheme, a special signaling packet can be avoided, the protocol overhead is reduced, and the link utilization rate and the system throughput are greatly improved.

A receiver receives a first message including a first PDCP SN. The receiver may receive a second message including a second PDCP SN. The receiver may derive a second RTP SN based on at least one of a first RTP SN of the first message, the first PDCP SN, the second PDCP SN, or an RTP SN field of a second PDCP header composing the second message.

The invention provides a data processing method, system and device, and belongs to the technical field of computer communication, the data processing system comprises: a terminal device used for recording and storing current operation data and a current timestamp generated by the terminal device as a piece of historical data when a network is in an offline state; if the network recovers to the online state, generating a historical data message based on the at least one historical data record; sending the historical data message to a platform; the platform is connected with the terminal equipment through a communication network and is used for receiving a data message sent by the terminal equipment; if the initial register address is a first initial register address, determining the number of historical data records according to the value of the register count field and the preset register length of a single historical data record; and analyzing the timestamps and the operation data of the number of historical data records from the data area and storing the timestamps and the operation data. On the premise of keeping an original simple protocol unchanged and not increasing protocol overhead, offline data tracing can be realized.

The invention discloses a Beidou global short message communication bidirectional authentication method, which enables a satellite and a user terminal to be mutually authenticated, ensures the legality of the satellite and the terminal participating in communication, and belongs to the technical field of navigation satellites. The method provided by the invention is divided into a first access authentication process and an authentication process after switching the visible relationship between the satellite and the user, the Beidou No.3 global short message service is fully utilized, the security is higher, and the authentication after switching is realized through cooperation among satellites, so that the problems of high protocol overhead and increased delay caused by visible switching are avoided.

The invention discloses a data processing method, device and equipment and a computer readable storage medium, and belongs to the technical field of computers. The method comprises the following steps: acquiring a plurality of sub-functions, wherein the plurality of sub-functions are obtained by decomposing a calculation function located in a modulo 2k ring; the multiple sub-functions are mapped to a Galois ring from a modulo 2k ring, first data and second data are calculated through the mapped sub-functions, ciphertext information corresponding to the second data is obtained based on a calculation result, at least two mapped sub-functions are located on the same Galois ring, and the first data and the second data are calculated in parallel; and sending the ciphertext information to the second equipment. As the calculation function is located in the modulo 2k ring, a calculation protocol defined on the modulo 2k ring can be used in the process of processing the first data and the second data by using the calculation function, and the calculation protocol overhead is low. According to the method, multiple sub-functions are mapped to the same Galois ring, and then the mapped sub-functions are calculated in parallel, so that the data processing efficiency is improved.

The invention provides a data transmission method and device and a storage medium, and the method is applied to ground terminal equipment, and comprises the steps: obtaining a plurality of protocol header fields in a protocol header structure according to the protocol header structure corresponding to a preset satellite communication protocol, obtaining the field parameter of each protocol header field according to a to-be-transmitted load message, and transmitting the to-be-transmitted load message to the ground terminal equipment; and generating a to-be-transmitted data packet according to the field parameter of each protocol header field and the to-be-transmitted load message, and sending the to-be-transmitted data packet to the high-orbit satellite, so that the high-orbit satellite forwards the to-be-transmitted data packet to a target application service platform corresponding to the ground terminal equipment through the equipment management platform. Therefore, a compact protocol head structure is adopted, the protocol overhead is reduced, and the bandwidth utilization rate and the effective data transmission rate are improved.

The invention discloses a credit management method and system for cross-DIE data transmission flow control. The credit management method comprises the following steps: (1) establishing a double-credit pool structure; (2) a remote credit management process; and (3) a local credit management process. The credit management system comprises a cross-DIE interface module, a credit management module, a protocol processing module and a buffer queue management module. According to the invention, the bidirectional flow control of various types of data transmitted across DIE is realized, and the protocol overhead is reduced on the premise of ensuring the flow control effect.

A method, apparatus and computer-readable medium for transmitting a medium access control (MAC) protocol data unit (PDU) including one or more MAC service data units (SDUs) of a logical channel; and transmitting a first type of MAC subheader including or excluding first logical channel identifier (LCID) information and including or excluding first length information, wherein a first size of the first LCID information is equal to or smaller than a second size of second LCID information of a second type of MAC subheader that is different than the first type of MAC subheader, and a third size of the first length information is equal to or smaller than a fourth size of second length information of the second type of MAC subheader.

This disclosure provides a data processing method, system, and apparatus, belonging to the field of computer communication technology. The data processing system includes: a terminal device used to store the current running data and current timestamp generated by the terminal device as a historical data record when the network is offline; if the network returns to online status, generating a historical data message based on at least one historical data record; sending the historical data message to a platform; and a platform connected to the terminal device via a communication network for receiving the data message sent by the terminal device; if the starting register address is a first starting register address, determining the number of historical data records based on the value of the register count field and the preset register length of a single historical data record; and parsing and storing the timestamps and running data of the specified number of historical data records from the data area. This system enables offline data traceability while maintaining the original simple protocol and without increasing protocol overhead.