A low-power long-distance networking method

Abstract

The invention discloses a low-power-consumption remote networking method. A network node monitors whether the current channel is occupied based on a CSMA / CA channel access mechanism; if the current channel is busy, first delay retreat time is calculated through the stochastic algorithm, the current channel is monitored again after the end of the first delay retreat time, and the step is repeated if the current channel is busy until the network node monitors that the current channel is idle; then second delay retreat time is calculated through the stochastic algorithm, and the current channel is monitored again after the end of the second delay retreat time; the step is repeated if the network node monitors that the current channel is busy; and if two times of monitoring indicates that thecurrent channel is idle, the current node data are immediately transmitted to the host through the current channel. According to the technical scheme, node communication delay can be reduced, the communication success rate and reliability can be guaranteed, the overall node average power consumption can be reduced and the system anti-interference capacity and communication distance can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a low-power long-distance networking method. Background technique [0002] Wireless communication technology has developed rapidly in recent years. Traditional point-to-point communication can no longer meet the complex network applications in the current Internet of Things era. However, most of the networking modules currently on the market are based on the ISM frequency band, which occupies a large amount of channels, making the same frequency The anti-interference ability is poor. At the same time, this series of modules has the following disadvantages in practical applications: [0003] 1. Node communication delay is large; [0004] 2. The node communication distance is short; [0005] 3. High power consumption of nodes. [0006] The current networking technology mostly uses slave time sharing or master polling to realize multiple nodes concurren...

AI Technical Summary

Problems solved by technology

[0002] Wireless communication technology has developed rapidly in recent years. Traditional point-to-point communication can no longer meet the complex network applications in the current Internet of Things era. However, most of the networking modules currently on the market are based on the ISM frequency band, which occupies a large amount of channels, making the same frequency The anti-interference ability is poor. At the same time, this series of modules has the following disadvantages in practical applications:

[0003] 1. Node communication delay is large;

[0004] 2. The node communication distance is short;

[0005] 3. High power consumption of nodes

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

[0008] The host polling method requires numbering each node in the network, and the host continuously asks each node in the network whether there is data to send. This method requires the node to continuously answer the host query even if there is no data to send, and The worst case is that the host has just inquired about a certain node, and it must wait until the next polling cycle of the host to send the data. This way, the power consumption of the slave is high and the communication efficiency is still not improved.

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