Abstract
The need for low power, long range and low cost connectivity to meet the requirement of IOT application has led to the emergence of Low Power Wide Area (LPWA) networking technolohies [5] In this paper, we present an adaptive data rate (ADR) algorithm for multi-gateway scenario to choose the appropriate data rate and power of independent nodes based on LoRaWAN specification. The algorithm using radio link quality include RSSI, SNR and packet receive rate(PRR) which can quickly find the appropriate setting of each node, also insure the PRR is sufficient to the Usage scenarios. The result shows that the proposed algorithm improves the energy efficiency and increases the effective bit rate and the battery life of the enddevice.
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