Analysis of Vehicular Roaming through Multiple WLAN APs in Container Terminal

This paper reports on measurement results for the simultaneous use of multiple WLAN APs in a large area. We describe some problems of applying legacy IEEE 802.11 WLAN technologies to a freight container terminal as a special application example. We begin by describing the characteristics of IT infrastructures in a container terminal environment. Then we examine S/W application requirements and work processes in a container terminal. One of the key problems based on clients´ complaints is frequent network disconnections. To find the cause of this problem, we observe the characteristics of service clients and collect the raw network data from actual measurements in a container terminal. We transform the collected raw data into meaningful secondary data and analyze the results after verifying our measurement approaches. The goal of this paper is providing a special measurement report and suggesting reasonable solutions for discovered problems.