A method and device for fragmenting and reassembling IP packets

Abstract

The invention provides a method and device for IP message fragmentation and reassembly, including an acceptance processing module, a format adjustment module, a fragmentation processing module and a recombination processing module; the input end of the fragmentation reassembly device receives the data message of the MAC layer information, the receiving processing module transmits the received data packet information to the format adjustment module, and the format adjustment module adjusts the data packet information into a network data packet and transmits it to the fragmentation processing module, and then the fragmentation processing module converts the network data packet Perform fragmentation processing. The reassembly processing module reads the data packet processed by the fragmentation processing module, and finally the reassembly processing module reassembles the data packet into data message information and sends it to the MAC layer. The fragmentation and reassembly method of the present invention utilizes the characteristic of one-to-one correspondence between RAM address information and data information, reduces the header information of the transmitted data message information, reduces the data load of transmission, and improves the efficiency of fragmentation and reassembly.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a fragmentation and reassembly method and device for an IP (Internet Protocol, Internet Protocol) message. Background technique [0002] The general OSI (Open System Interconnection, Open System Interconnection) seven-layer network protocol model is divided into seven layers, and each layer can have several sub-layers. The seven layers of OSI are application layer, presentation layer, session layer, Transport layer, network layer, data link layer, and physical layer, where the application layer, presentation layer, session layer, and transport layer define the functionality of the application, while the network layer, data link layer, and physical layer are mainly for End-to-end data flow. Among them, the application layer mainly corresponds to the communication service of the application program, and is an application for communicating with other computers. The m...

AI Technical Summary

Problems solved by technology

In this way, in a network environment with a particularly large bandwidth, most of the transmitted header information is repeated, while the useful payload only accounts for a small part, which will inevitably reduce the transmission efficiency.

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