Multi-channel communication method in domestic wireless subnetwork

Abstract

The invention relates to a multi-channel communication method in a home wireless subnet, which belongs to the communication technology in the home network. It includes the steps of information source coding, modulation and radio frequency signal transmission realized by the wireless transmitting module, and the steps of radio frequency signal receiving, demodulation and decoding realized by the wireless receiving module. It has multiple wireless transmitting and receiving modules working at the same time. Each wireless transmitting and receiving module adopts the frequency keying modulation method, works at a center carrier frequency point, and the working channel bandwidth B is narrowband. They can all work on multiple fixed carrier frequency points with a bandwidth of B, and there is a sufficiently wide fixed interval between two adjacent carrier frequency points. Moreover, the microprocessor controllers are used to generate and receive data packets and control command packets respectively, and establish and select working channels. It provides an efficient short-range multi-channel communication method in a home wireless subnet, works well and avoids radio frequency interference.

Description

technical field [0001] The invention belongs to the technical field of home network, and more specifically relates to the improvement of the multi-channel communication method in the home wireless subnet. Background technique [0002] The wireless subnet is a subnet in the home application network. The wireless subnet includes multiple wireless modules. In the wireless subnet, these modules exchange control commands and data information through wireless communication. The wireless communication between modules works on a fixed frequency band, which is called a channel. [0003] Generally speaking, the home wireless subnet includes wireless modules and wireless subnet control terminals. There is wireless communication between the modules or between the modules and the wireless subnet control terminal at the same time. There are two topological forms of the home wireless subnet: star topology and peer-to-peer topology. [0004] Home wireless subnets are a new achievement....

AI Technical Summary

Problems solved by technology

If all wireless networks only work in a very narrow frequency band, network communication will cause serious radio frequency interference, and even normal communication will not be possible at all

[0006] At the same time, the wireless media environment is also very complex

A set of wireless modules may work well in one specific frequency band, but not in another

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