Communication method and device based on multi-channel monitoring and rssi sampling
A communication method and multi-channel technology, which are applied in the field of communication methods and devices based on multi-channel monitoring and RSSI sampling, can solve the problems of up and down fluctuations, irregular sampling, collision and collision of data transmission, etc., so as to avoid interference and collision and ensure normal reliability. The effect of transmission
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[0044] The second embodiment of the communication method provided by the present invention has the following steps:
[0045] S1. Obtain RSSI values of multiple adjacent channels from multiple points uniformly distributed in space.
[0046] In this embodiment, this step is performed by the data receiving system 3. After the data receiving system 3 monitors the RSSI value of the channel it occupies, it sends the value to the processing system 2 for recording.
[0047] S2, if at time t, a certain channel in the plurality of adjacent channels is to be used to send data packets, then the RSSI value of the certain channel is sampled multiple times at fixed time intervals from time t onwards ( That is, from t onwards, the RSSI values of multiple time slots are acquired), and multiple sampling values are obtained.
[0048] S3, estimating the background noise of the environment.
[0049] The formula for estimating ambient background noise is: Among them, RSSI(t) represents th...
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