Performance Evaluation of Wireless Switching for Indoor AGV

In recent days, various types of wireless communication-based equipment such as Automated Guided Vehicles (AGVs), stacker cranes, and mobile robots have been used to enhance productivity and factory automation. Wireless communication networks are promising for a flexible factory where frequent reconfigurations occur, whereas communication quality, reliability and roaming of wireless links may be the issues for their utilization. This paper shows the experimental results of the function that monitors the communication quality of multiple Access Points (APs) and reduces the communication disconnection time by communicating with appropriate APs through multiple interfaces in a real logistics area. As a result, the packet loss ratio was improved by 21.94% and the average delay time was reduced by about 50-60ms.