Performance Analysis of Dynamic Rate Based Borrowing Scheme on Basis of QoS Parameters?

With the recent advances in wireless communications, cellular networks are supposed to support the real-time multimedia traffic such as data, video teleconferencing etc. To carry the multimedia traffic these networks must be able to provide quality-of-service (QoS) guarantees to the users. Various schemes have been proposed for QoS provisioning in the multimedia wireless networks. These schemes include call admission control and resource reservation schemes. Call Admission Control schemes are used to decide whether an incoming call should be admitted for network service or not. Channel reservation strategies are designed by either reserving a fixed number of channels or adjusting the reservations dynamically. In this paper, I presented a scheme that attempts to allocate the desired bandwidth to every multimedia connection originating in a cell or being handed off to the cell. In case of insufficient bandwidth, bandwidth is borrowed on a temporary basis from the existing connections. It is guaranteed that no connection gives up more than its fair share of bandwidth, i.e., the amount of bandwidth borrowed from a connection is proportional to its tolerance to bandwidth loss. The scheme presented in this paper is then compared with two previous schemes (fixed borrowing scheme & rate based borrowing scheme) on the basis of some specified QoS parameters.