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This paper presents a new QoS multicast routing algorithm TPMA for MPLS-TE. The algorithm first modifies the evolution equation to improve standard PSO, and then utilizes TS technique to realize the balance of global and local search, further combines Fitness function to enhanced the global search ability, simultaneously considers other QoS parameters. The main objective of TPMA is to build a QoS...
Providing quality of service (QoS) guarantees in networks gives rise to several challenging issues. One of them is how to determine a feasible path that satisfies a set of constraints while maintaining high utilization of network resources. Multi-constrained QoS routing algorithm finds a feasible route in network that satisfies multiple independent constraints. In general, multi-constrained path selection...
The QoS is a key measure for satisfaction level of next-generation network (NGN). QoS multicast routing is becoming an urgent problem to promote NGN. An optimization mode is proposed for it, and an immune inspired algorithm is designed to solve the model. The simulation study shows the promising effects of the model and the algorithm. The study can meet the requirements of NGN performance optimization.
Multimedia communications and, in particular, multicast communications are widely used to distribute multimedia contents. When a certain quality of service (QoS) level must be guaranteed in the multicast tree construction then a Steiner tree problem is obtained, therefore a NP-complete problem must be faced. QoS multicast has a great relevance in the research community because it can offer high performances...
Most network operators have considered reducing Label Switched Routers (LSR) label spaces (i.e. the number of labels that can be used) as a means of simplifying management of underlaying Virtual Private Networks (VPNs) and, hence, reducing operational expenditure (OPEX). This letter discusses the problem of reducing the label spaces in Multiprotocol Label Switched (MPLS) networks using label merging...
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