Enhanced Class-based Packet Scheduling Policy for QoS Provisioning in Multimedia Cellular Networks

Abstract

In this paper, we propose a novel packet scheduling algorithm, based on the CBQ scheduling policy for QoS provisioning in multimedia cellular networks. CBQ, based on service class differentiation, aims at maximizing the use of available radio resource and meeting the QoS requirement of higher priority users as much as possible while maintaining the minimum requirements of lower priority users, especially when the system suffers from congestion. In this policy, CBQ is combined to a Dynamic Priority Function. It considers the realistic behaviour of traffic, taken into account while considering the spatial variation of the system characterizing both the user mobility and the signal propagation impairments due to the surrounding effects. The new scheduling policy provides enhanced traffic performance in heterogeneous environments and achieves a good level of capacity gain.