Real-time high-efficiency and low-power-consumption wireless star networking method

Abstract

The invention relates to a real-time high-efficiency and low-power-consumption wireless star networking method. Bands in networking are divided into a public band and a node band. The public band is used for a salve to transmit node data to a host. The node band is used for a node to transmit a communication request and passively receive the data of the host. A process that the node initiates communication to the host comprises two steps that (1), the node transmits a data request; and (2), the node data is transmitted. The method has the beneficial effects that (1), the node data transmitting delay is reduced; (2), the time of transmitting the data by the node can be predicted; and (3), the node power consumption is reduced, in general, the power consumption in the transmitting process of the node is far higher than that in a static state, the delay in the transmitting process is shortened, so the transmitting power consumption can be effectively reduced, and the transmitting power consumption of the node of the method is smaller than that in a general mode.

Description

technical field [0001] The invention relates to a real-time and high-efficiency low-power consumption wireless star-shaped networking method, which belongs to the technical field of networks. Background technique [0002] The ISM frequency band wireless star network has been widely used. At present, it is divided into the same frequency network and the frequency division network from the physical frequency band. The communication process mostly uses the time slice communication method. There are many disadvantages in practical applications, such as: (1 ) node communication delay is large; (2) node communication delay is unpredictable; (3) node power consumption is high. All node devices in the same-frequency time-division network work in the same frequency band. In order to avoid co-frequency interference, only one node is allowed to initiate data communication at any time in the network. Therefore, strict time synchronization is required for all nodes in the network. The d...

AI Technical Summary

Problems solved by technology

The node data transmission time in the network is unpredictable, and the corresponding time slice length is also different. The usual solution is to use the largest possible time slice in the network as the maximum time, so that all nodes in the network can have enough Communication time, but because the data sending process of the nodes is random, most nodes do not really need to communicate in the time slice, resulting in the waste of the node time slice, and the entire network communication efficiency and real-time performance cannot be guaranteed

On the other hand, due to the use of a fixed working frequency band, any single-node session initiated by the host in the network is equivalent to a broadcast signal, which inevitably wakes up the sleeping devices of the entire network. this is unacceptable

In the frequency-division and time-sharing networking, all nodes communicate in their own unique working frequency bands, which can effectively avoid the broadcast wake-up situation in the same-frequency networking, and the network power consumption is guaranteed. Time-sharing networking mechanism, communication efficiency and real-time performance have not been improved