Long Range Wide Area Network (LoRaWAN) has gained significant interest and has been widely adopted in several industrial use cases. It provides a good interference-robust wireless communication infrastructure using unlicensed bands. Different LoRaWAN capabilities are available in three different forms. Among these standards, is LoRaWAN Class B, which operates extra receive windows to serve end device synchronization with the network server. LoRaWAN uses the Adaptive Data Rate (ADR) feature to control the transmission parameters including Spreading Factors (SF). This paper investigates the utilization of the LoRaWAN class B beaconing technique to enhance the efficiency of LoRaWAN uplink traffic transmission. Class B beacons are optimized to identify the best SF that an end device should use when transmitting an uplink packet. The proposed system is evaluated using a network simulator and the result shows the ability of the proposed system to improve delivering uplink traffic from the LoRaWAN end device to the network server.