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NGN (next generation network) architectures are constantly evolving towards solutions that allow the operator to provide QoS-guaranteed services in heterogeneous, multi- domain and multi-services networks. In this context, one of the most advanced technologies is DiffServ-aware Traffic Engineering. It performs traffic engineering (TE) in a differentiated service environment by applying routing constrains...
NGN (Next Generation Network) architectures are constantly evolving towards solutions that allow the operator to provide QoS-guaranteed services in heterogeneous, multi-domain and multi-services networks. In this context, DiffServ-aware Traffic Engineering (DS-TE) is one of the most advanced technologies, which performs traffic engineering (IE) in a differentiated service environment by applying routing...
The preemption policy with three main preemption optimization criteria is proposed in many literatures and the choice of LSPs to be preempted is an NP-complete problem. We propose a heuristic algorithm called B-PREPT to solve the problem. Simulation results indicate that our algorithm has higher choice accuracy than the well-known heuristic algorithm recently cited by many other papers. Moreover,...
In DiffServ-aware traffic engineering, a key issue is how to properly allocate bandwidth for different DiffServ class types. Recently, a cumulative allocation strategy, called the Russian Doll Model (RDM), has gained intensive interests in IETF. The basic RDM, however, only describes the necessary condition of a stable queuing system: the utilization factor must be less than unit. When applied to...
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