A New Qos Control Scheme Using Dynamic Window Size Control for Wide Area Wireless Networks

In the wide area wireless network, most wireless terminals will send small amounts of data with very long transmission intervals. Therefore, each access point must accommodate a large number of wireless terminal and devices. Moreover, the network is required to accommodate a variety of wireless terminals, so quality of service (QoS) needs to be guaranteed. In this paper, we propose a new QoS control scheme for the wide area wireless network. The proposed scheme observes the delay time of the higher priority class and, according to the delay, it amends the back-off parameters of the lower priority class. This guarantees the throughput and delay performance of the higher priority class. This paper also clarifies the problems of the conventional scheme and reveals the throughput and delay performance of the conventional and proposed scheme by computer simulation.