Internet of things system networking based on ISM frequency bands below 1GHz

Abstract

The invention discloses a networking way of an Internet of things system. A host and a plurality of extensions construct basic networking units; communication frequency bands between the host and the extensions are ISM frequency bands below 1GHz; a half-duplex communication way is adopted; the host transmits data or commands by adopting data frames with address codes; and the working time of the extensions is classified into sleeping time, monitoring time and response time. Within the monitoring time, the data frames transmitted by the host are received; the extensions enter three segments of working time circularly; and the host enters a monitoring mode after finishing transmission to monitor whether or not replies of the extensions are received within a certain time period. Through different basic networking units, the coexistence of a plurality of networks in the same region is realized through setting of a plurality of channels. The networking way of the Internet of things system is suitable for large-scale flexible networking under the situation of low requirements on instantaneity and communication traffic.

Description

technical field [0001] The invention relates to a networking mode of an Internet of Things system, especially a low-power, low-cost, large-scale networking mode. Background technique [0002] At present, the networking methods of the IoT system mostly use ZigBee, Bluetooth, wireless Ethernet, or other communication technologies based on the 2.4G wireless frequency band. Zigbee is a wireless network technology with short distance, low data rate, and low power consumption; compared with Zigbee, Bluetooth has a higher data rate, but the cost is also higher; wireless Ethernet consumes more power. A notable feature of these technologies is that the communication distance between single points is short, which is not conducive to large-scale and highly flexible networking. Contents of the invention [0003] In order to overcome the deficiencies in the coverage area and flexibility of the existing networking methods, the present invention provides a networking method based on the...

AI Technical Summary

Problems solved by technology

Zigbee is a wireless network technology with short distance, low data rate and low power consumption; compared with Zigbee, Bluetooth has a higher data rate, but the cost is also higher; wireless Ethernet consumes more power

A notable feature of these technologies is that the communication distance between single points is short, which is not conducive to large-scale and highly flexible networking.

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