Edge router for 6LoWPAN IPv4 Internet access and access method

Abstract

The invention provides an edge router for 6LoWPAN IPv4 Internet access and an access method, and provides a mechanism for accessing (IPv4) Internet on the basis of an IPv6 sensing network, and the mechanism is used for solving the interconnecting problem of the sensing network and the Internet. The edge router has the advantages that the network middleware mode is used for expanding the function of the 6LoWPAN edge router, so that the transparent gateway effect is achieved. An ARM9 (advanced RISC machine 9) control unit comprises a 6LoWPAN protocol stack and a TCP / IP (transmission control protocol / Internet protocol) stack, the heterogeneous protocol conversion, routing forwarding and the like are completed, in addition, a uNAT-PT (micro network address translation-protocol translation) mechanism is added to the network layer of the TCP / IP stack, and dynamic address mapping and protocol translation are adopted for realizing the conversion between an IPv4 data packet and an IPv6 data packet. The addition of new network equipment to the whole communication system and the modification of any network protocol stack are not needed, the fusion problem of the sensing network based on IPv6 and the Internet network can be solved, the system structure is simple, economic and convenient, and the seamless fusion between the heterogeneous networks and the service extension can be favorably accelerated.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a method for seamlessly accessing the Internet (Internet) network architecture of a wireless sensor network 6LoWPAN (low-speed wireless personal area network based on IPv6 protocol) based on IPv6 (next generation Internet protocol) . It is used for conversion between IPv6 sensor network data packets and IPv4 (Internet Protocol) Ethernet data packets. Background technique [0002] Wireless sensor network (WSN) is considered to be one of the global high-tech industries in the future, and it is also a hot research field that is highly concerned at present. It is a comprehensive intelligent information system integrating information collection, information processing, information transmission and information application, and is composed of a large number of low-cost, battery-powered, wireless communication and monitoring micro-embedded devices deployed in the m...

AI Technical Summary

Problems solved by technology

Using this method has the following problems: a service manager needs to be deployed on the Internet, which increases network overhead virtually; using a fixed message format to send requests can only be limited to certain specific protocols and cannot be used universally

[0006] Although the above-mentioned public documents all realize the simple function of connecting the sensor network to the Internet, generally speaking, the access methods have certain usage restrictions and are not designed for the actual situation of the current network. Although the measures based on service provision are more It is beneficial to the extension of network services, but at the same time increases the network overhead; the users of the IPv6-based solution can only be PCs that support the IPv6 protocol, which cannot be widely used in the current network

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