Random early detection gateways for congestion avoidance
IEEE/ACM Transactions on Networking (TON)
Integration of Pricing with Call Admission Control to Meet QoS Requirements in Cellular Networks
IEEE Transactions on Parallel and Distributed Systems
ISCC '00 Proceedings of the Fifth IEEE Symposium on Computers and Communications (ISCC 2000)
New Mobility Based Call Admission Control with On-Demand Borrowing Scheme for QOS Provisioning
ITCC '03 Proceedings of the International Conference on Information Technology: Computers and Communications
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As the resources in a wireless network are limited and freely shared by all network users, Call Admission Control (CAC) plays a significant role in providing the Quality of Service (QoS) in wireless networks. However, when the network is congested with too many users, traditional CAC that mainly focuses on the tradeoff between new call blocking probability and handoff call dropping probability cannot guarantee QoS requirements to users. To address this issue, this paper proposes a dual level congestion control scheme which considers not only the call level admission control but also the user's decision to enter the network or not during the network traffic burst interval (we call it as user-level burst control). We adopt the economical terms of externality and introduce a total user utility function to formally model the user's perceived QoS metric. Our simulation shows that the weighted blocking probability (Pb) of our scheme can decreases 70-80% than traditional CAC systems and increase the total user utility to 2-3 times.