Scalable E2E Framework for Heterogeneous (Wired-cum-wireless) Networks

Next generation wireless networks aim to provide guaranteed Quality of Service (QoS) for multimedia applications. However, bandwidth is an extremely scarce resource in such networks that required an efficient and effective management mechanism to enhance the network performance and provide better services for mobile users. So, it would be desirable to investigate the integration of RSVP and a flow reservation scheme in wireless LANs, as an end-to-end solution for QoS guarantee in wired-cum-wireless networks. In this paper, we propose a lightweight RSVP-like flow reservation and priority based negotiable admission controlled SWRESV scheme for IEEE 802.11 wireless LAN. The proposed framework is designed for guaranteed flow reservation by taking advantage of the Adaptive resource Allocation algorithm with new calls in order to enhance the system utilization and blocking probability of new calls. SWRESV support the smooth roaming of mobile users among different basic service sets and also have an efficient handoff scheme, that considers both the flow rate demand and network resource availability for continuous QoS support. Omnetpp simulator is used for simulation work, simulation results show that the proposed scheme is promising in enriching the QoS support of multimedia applications in heterogeneous wired-cum-wireless networks. Results show that our framework outperforms the previous framework in terms of connection blocking probability, connection dropping probability, and bandwidth utilization.