ANALYSIS OF BANDWIDTH ALLOCATION SCHEMES IN WIRELESS NETWORKS



Abstract:

Wireless networks 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. Admission control and bandwidth allocation schemes provide wireless networks with the ability to provide their users with such guarantees. But, due to host mobility, limited bandwidth, and chances of channel impairments, the QoS provisioning is a challenging task in wireless networks. Since the user’s itinerary and the availability of resources in various cells is usually not known in advance, global QoS guarantees are very difficult to provide. A mobile host may be admitted into the network in a cell where its requirements can easily be met, but the mobile host may eventually move to a cell that has little or no resources to offer. This paper focus on the analysis of wireless networks schemes (fixed and rate based borrowing scheme) on the basis of two QoS parameters (call dropping and call blocking). Both schemes are simulated with class I and class II traffics for comparison with same simulation and traffic parameters.

 

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