Influence of Interference with Moving Terminal in Wireless LAN Environment and Evaluation of Behavior of QoS-TCP

In late years, the demand for multimedia communication has been raised extensively. In this environment, to guarantee the QoS is extremely important. While various control mechanisms have already been realized about the QoS control in each protocol layer, a QoS-guaranteed TCP (QoS-TCP) has been proposed. The QoS-TCP tries to guarantee a specified bandwidth against competing background TCP traffic. Previous researches reveal that the QoS-TCP is effective in wired networks, fixed wireless networks, and wireless network with handover. Recently, a mobile router has spread quickly. Therefore, we should assume the environment where an access point (AP) and portable terminals move together, and investigate the use of QoS-TCP in such an environment. In this paper, we investigate the behavior of QoS-TCP caused by radio interference when 2 QoS-TCPs come close together.