Distributed advance reservation of real-time connections
Multimedia Systems - Special issue on the fifth workshop on network and operating system support for digital audio and video 1995 (NOSSDAV)
Resource sharing for book-ahead and instantaneous-request calls
IEEE/ACM Transactions on Networking (TON)
Resource sharing in advance reservation agents
Journal of High Speed Networks - Special issue on multimedia networking
Concepts for Resource Reservation in Advance
Multimedia Tools and Applications
Comparative analysis of path computation techniques for MPLS traffic engineering
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: Towards a new internet architecture
Advance Reservations for Predictive Service
NOSSDAV '95 Proceedings of the 5th International Workshop on Network and Operating System Support for Digital Audio and Video
Issues ofReserving Resources in Advance
NOSSDAV '95 Proceedings of the 5th International Workshop on Network and Operating System Support for Digital Audio and Video
Admission Control and Capacity Management for Advance Reservations with Uncertain Service Duration
NETWORKING '02 Proceedings of the Second International IFIP-TC6 Networking Conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications
IEEE/ACM Transactions on Networking (TON)
Rerouting in advance for preempted IR calls in QoS-enabled networks
Computer Communications
IEEE/ACM Transactions on Networking (TON)
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Increasing demand for multimedia and distributed applications in recent years has drawn renewed attention to book-ahead (BA) reservation. BA reservation has proved itself as an effective technique for time sensitive applications that require high amount of bandwidth with guaranteed QoS. However, BA reservation causes preemption of on-going instantaneous request (IR) calls when resource scarcity arises. Preemption disrupts service continuity for the preempted calls, specially in high speed large networks where rerouting is costly and often disabled because of high bandwidth-delay product and buffer capacity constraint. Recent studies on QoS definition has identified service continuity as one of the most important issues perceived by the users. Minimization of service disruption is crucial for effective implementation of BA reservation. Earlier models proposed to reduce IR call preemption use constant look-ahead time. This paper proposes a new model to calculate look-ahead time dynamically taking traffic parameters and network state into consideration. Simulation results show that the proposed model outperforms earlier model in terms of preemption probability, network utilization, and wasted throughput. The proposed model offers the flexibility of achieving a set level of preemption rate by appropriate selection of a single parameter value. Two techniques to estimate an appropriate value of this parameter are also presented.