Optimization method and device based on CSMA-CA back-off algorithm

Abstract

The invention discloses an optimization method and device based on a CSMA-CA back-off algorithm, electronic equipment and a computer readable storage medium. The optimization method based on the CSMA-CA back-off algorithm comprises the following steps: acquiring a channel state; acquiring a channel strength coefficient; obtaining the back-off frequency of the current sending data of the node; setting a competition window intermediate value; and calculating the contention window according to the channel state, the channel strength coefficient, the back-off frequency and the contention window intermediate value. The backoff algorithm solves the problem of unfairness existing in a binary backoff algorithm; due to the fact that a contention window is mainly close to the size of CWmid and LoRatransmission delay is increased, a neighbor node can cause a serious backoff phenomenon, and the algorithm enables each LoRa node to quickly enlarge the contention window and reduce contention betweennodes when transmission conflicts occur; when the channel load is light, the contention window is gradually reduced, so the node competes for the channel fairly, a reasonable value of the contentionwindow is found as much as possible in the gradual decreasing process, and the fairness of the network is ensured.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an optimization method, device, electronic equipment and computer-readable storage medium based on a CSMA-CA backoff algorithm. Background technique [0002] With the rapid growth of the Internet of Things (IoT), another important technology has emerged in the research field, which provides the advantages of wide coverage, low cost, simple deployment, and support for large connections, which helps High-performance wireless communication among the Internet of Things, which is called Low-Power Wide-Area Network (LPWAN for short). Today, IoT devices dominated by LPWAN technology can reach 60% of the total IoT. At present, the three leading technologies of low-power wide-area IoT networks are LoRa, NB-IoT and Sigfox. [0003] Among them, the LoRaWAN network protocol with LoRa technology as the core has been widely used, such as: smart city, smart home, smart transportation, ...

AI Technical Summary

Problems solved by technology

[0010] In view of this, an embodiment of the present invention provides an optimization method, device, electronic device, and computer-readable storage medium based on the CSMA-CA backoff algorithm to solve the problem of unfair channel occupancy and energy consumption by each node in the prior art. The problem of high consumption

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