Interconnection method of wireless multimedia sensor network and wireless local area network Internet

Abstract

An interconnection method of a wireless multimedia sensor network and a wireless local area network Internet is mainly used to solve the communication problem between the wireless multimedia sensor network and the Internet. The device of the interconnection method is a gateway node. The main function of the gateway node is for converting protocols and is characterized in that the gateway node has two communication modules, respectively an wireless multimedia sensor network ZigBee communication module and a wireless local area network 802.11g communication module; the former is used for receiving the data sent from the wireless multimedia sensor network, the latter is used for sending the data to a wireless access point of the wireless local area network, a processor chip is used for the conversion between wireless multimedia sensor ZigBee communication protocol and wireless local area network 802.11g communication protocol; a memory module is used for storing the data received from the wireless multimedia sensor network and the data is forwarded to the Internet through the wireless local area network.

Description

technical field [0001] The invention relates to a solution for communication between two networks using different protocols, and belongs to the intersecting field of embedded development and computer network technology. Background technique [0002] With the development of microelectronics technology and the maturity of wireless sensor networks, the monitoring environment is becoming more and more complex and changeable. The simple data obtained by traditional sensor networks cannot meet people's overall needs for environmental monitoring. There is an urgent need to enrich the information The image, audio, video and other media are introduced into the environmental monitoring activities based on the sensor network to achieve fine-grained and accurate information environmental monitoring. The wireless multimedia sensor developed on this basis has gradually entered our world. It is an improvement on traditional wireless sensors, such as adding CMOS cameras, sound collectors an...

AI Technical Summary

Problems solved by technology

[0004] The inventor finds in the course of research that these three schemes all have different defects: in the first scheme, due to the limited memory and computing resources of wireless multimedia sensor network nodes, it is impossible to run a complete TCP / IP protocol stack, although it is now possible Cut down the TCP / IP protocol stack to meet resource requirements, but there are also a lot of problems in other aspects, such as: TCP / IP is not suitable for wireless environments, routing algorithms are not suitable for wireless transmission multi-sensor networks, and the overhead of data packet headers is too large And IP address allocation is more complicated, etc.

In the second solution, the Internet host can directly communicate with the sensor node and process data packets like a sensor node, but its disadvantage is that an additional protocol stack needs to be deployed on the Internet host

The disadvantage is that it takes a lot of money to deploy the Bundle layer on the existing network protocol stack

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