Utilizing Dynamic Resource Adjustment to Improve QoS of Streaming in Multimedia Wireless Network

Abstract

With the rapid advances in wireless network communication, multimedia presentation has become more applicable. However, due to the limited wireless network resource and the mobility of Mobile Host (MH), QoS for wireless streaming is much more difficult to maintain. How to decrease Call Dropping Probability (CDP) in multimedia traffic while still keeping acceptable Call Block Probability (CBP) without sacrificing QoS has become an important issue to be addressed. In this paper, we propose a novel Dynamic Resources Adjustment (DRA) algorithm, which can dynamically borrow reserved resource for handoffing MHs to compensate the shortage of bandwidth in media streaming. The experimental simulation results show that compared with traditional No Reservation(NR) and Reservation Resource(RR), DRA not only increases bandwidth utilization by 13%, but also efficiently decreases CDP by 25% while still keeping CBP within 13%.