Mobile Node Roaming Communication Method for BLE Multi-connection Network Adapting to Linear Space in Mines
ZHUO Minmin
ZHAO Lichang
Abstract：Bluetooth low energy(BLE)is a wireless communication technology standard in smartphones.In the linear restricted space of mine tunnels,mobile nodes such as space workers and walking machinery need to be connected to wireless communication networks and maintain connectivity with the network and interact with perception data.For this reason,a roaming communication method for mobile nodes in a linear BLE multi-connection network was proposed.This method continuously monitors and evaluates RSSI(Received signal strength index)values of the BLE base stations through the BLE mobile terminal,and adopts the average filtering algorithm which removes extreme values to filter the signal quality,and select the primary communication link for data transmission and the secondary communication link for maintaining connectivity.During the mobile process,the stability of the data transmission channel was ensured by switching between primary and secondary communication links and rebuilding secondary communication links,and the BLE base station continuously broadcasts and updates the data transmission path to ensure the accuracy of the mobile communication path.The experimental results indicated that mobile terminals could autonomously switch connections with base stations to maintain stable transmission links,and had better robustness.
Keywords：linear restricted spacebluetooth low energy(BLE)roaming communicationroaming linkRSSI
Publication Date：2023-12-12
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 10-14 )