The coexistence of various network protocol standards at present creates a huge barrier against network interconnection and interoperability. This paper proposes an IOT gateway system to implement various heterogeneous networks interconnection and interworking. The multi-protocol conversion gateway system is developed on top of the WMMP framework to integrate heterogeneous networks and incorporates a semantic model of an IOT software system. And then the protocol conversion method is designed on the basis of the protocol driver template, which is configurable for different communication protocols. The gateway communication process is implemented to report and transmit data and forward command to the bottom layer devices. As a result, the analysis test results show that dynamic protocol conversion mechanism of the gateway provides a good operating environment for different service functions for stable, scalable and real-time remote control system.

The disunion of communication protocol standards at present creates a huge barrier against the interconnection and interoperability of heterogeneous devices in home. To solve this problem, a method of multiple protocols conversion of home gateway was proposed to integrate a variety of heterogeneous protocol networks. Firstly, a new task description language based on ClassAD was designed to describe different heterogeneous devices for communicating each other in home networks. And a plug-in expansion mechanism was introduced to improve the scalability of heterogeneous protocols and the throughput of home networks system. As a result, the ability of semantic interoperability of heterogeneous devices is achieved to integrate new applications and drivers into the deployed intelligent home system during runtime based on the proposed home gateway.