Network data access method, access gateway and system capable of supporting sensor

Abstract

The invention provides a sensor network data access method, and an access gateway and a system thereof. The sensor networks are linked via gateways and IP network systems to support access to sensor network data. The access method comprises the following steps: (a) storing target access equipment information in a gateway; (b) searching the target access equipment information by the gateway when the gateway starts routing the sensor data from a sensor network linked with the gateway according to target node information of the sensor data; (c) carrying out IP data encapsulation of the sensor data with the obtained target access equipment information and sending to target access equipment via an IP network; and (d) decapsulating the received IP data packet by the target access equipment.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data communication process used by a sensor network (Sensor Network). Background technique [0002] With the continuous development and improvement of sensor technology, wireless communication technology and computing technology, various sensor networks will spread all over our living environment. The sensor network can measure the parameter value of the observed object in a given area, detect the event of interest and estimate related parameters, classify and identify the observed object, locate and track the observed object, etc., and has broad application prospects. , Widely used in national defense and military, security and anti-terrorism, environmental monitoring, traffic management, medical and health, disaster relief and industrial manufacturing and other fields. [0003] Usually, as a sensor network system of an isolated network, it has a relatively inde...

AI Technical Summary

Problems solved by technology

Obviously, in this way, the sensor nodes must send updated data to the proxy gateway 11 at a high frequency cycle to ensure the real-time performance of the database, which will inevitably consume the limited energy of the sensor nodes faster, resulting in a reduction in its survival time

[0005] In addition, the above-mentioned proxy method also has the following defects: a proxy gateway is usually dedicated to a specific task or a specific protocol, therefore, a specific application requires a specific proxy implementation, and there is no general routing mechanism between proxy gateways. There are certain problems in the interconnection between

Its main manifestations are: the routing algorithm is not suitable for the sensor network, the overhead of the data packet header is too large, the TCP retransmission mechanism consumes too much energy, the security mechanism cannot be provided, and it is necessary to assume that the nodes in the sensor network are assigned IP addresses

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