Transparent wireless sensor network/time division-synchronization code division multiple access (WSN/TD-SCDMA) gateway based on internet protocol version 6 (IPv6)

Abstract

The invention relates to transparent gateway equipment for connecting a wireless sensor network (WSN) and a time division-synchronization code division multiple access (TD-SCDMA) network based on an internet protocol version 6 (IPv6). The transparent gateway equipment comprises an advanced RISC machine 9 (ARM9) control unit and a WSN subnet access unit, wherein the ARM control unit mainly relates to an internet protocol (IP) layer and a media access control (MAC) layer of an open system interconnection (OSI) seven-layer model, is used for finishing protocol conversion, internetworking, route forwarding and the like, and adopts a transparent protocol conversion manner; the WSN subnet access unit mainly relates to a network layer, an MAC layer and a physical (PHY) layer of Institute of Electrical and Electronic Engineers 802.15.4c (IEEE802.15.4c), is used for networking and accessing of WSN subnet, collecting a subnet data and then transmitting the subnet data to the ARM9 control unit through a serial port. A jump channel technology is adopted in the MAC layer, a next time channel determinant mechanism is used and a channel quality value Pn is set so that the anti-interference performance of WSN equipment is improved and interfered channels are shielded; the TD-SCDMA network is accessed by utilizing a modem. The transparent gateway equipment solves the problem of convergence between the WSN and the TD-SCDMA common communication network, and the connection and data transmission between an IPv6-based WSN network and an IPv6-based cable network are realized.

Description

technical field [0001] The present invention relates to wireless sensor network technology, in particular to a sensor network gateway device based on IPv6 (next generation Internet protocol). Background technique [0002] Gateway (Gateway) is a computer system or device that acts as an access or switch, and is a combination of software and hardware that connects different networks. When intercommunicating between networks using different architectures or protocols, the gateway acts as a translator and provides network compatibility. [0003] A wireless sensor network (WSN) is a network of many spatially distributed sensor nodes that can cooperatively monitor physical or environmental conditions (such as temperature, sound, vibration, pressure, motion, or pollutants) at different locations. ), processed and sent wirelessly, and finally sent to the end user through the wireless network. It is one of the key issues in the application of wireless sensor networks to obtain info...

AI Technical Summary

Problems solved by technology

In general, in the field of industrial control, there are two main communication methods between wireless sensors and WSN gateways. The first one mainly uses the RS-485 bus, and the field bus or industrial Ethernet is respectively connected to the sensor network, which requires construction wiring. The construction period is relatively long, especially the post-maintenance cost is relatively high; the second type mainly uses the on-site control system of MCU (microprocessor unit) + GPRS (general packet radio service technology) + WSN, due to the limitation of the speed and integrity of the single chip microcomputer, And the transmission speed of GPRS is not very fast

[0004] Although a gateway based on IPv6 (Next Generation Internet Protocol) and TD-SCDMA (Time Division Synchronous Code Division Multiple Access) network interconnection has been proposed recently, it does not combine IPv6 technology with TD-SCDMA technology, but generally uses The program (socket) achieves the purpose of remote connection, depending on the specific application; most wireless sensor networks are based on the IEEE802.15.4 standard, and do not provide support for the new IEEE802.15.4c standard; The communication interference problem at the time of the standard does not consider the communication interference problem of the network when the industrial site adopts the IEEE 802.15.4c standard, which reduces the anti-interference ability of the entire system

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