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The interoperability of wireless and PON networking solutions is investigated to reduce deployment expenditure by means of centralised network management while providing ubiquitous access connections and mobility. Network modelling in the physical layer of WiMAX channel transmission based on FDM over legacy PONs has demonstrated EVMs below -30 dB and error-free multipath transmission. In addition,...
Automatically switched multilayer IP-over-optical networks offer extensive flexibility in coping with offered traffic. Multilayer traffic engineering (MLTE) takes advantage of this through online IP logical topology reconfiguration in addition to the more traditional rerouting. Although MLTE typically optimizes towards resource usage, bandwidth throughput and QoS performance, energy efficiency has...
We propose a linear formulation for traffic routing in optical networks after the virtual topology design (VTD). The formulation maximizes the amount of traffic the network is able to accept, through minimizing the residual capacity in established lightpaths. The results suggest that it is feasible to preserve enough open capacity to avoid disruption of connections and blocking of future traffic demands...
The differentiation of resilience services to meet the requirements of different traffic types is a major architectural and design issue. This paper investigates the problem of differentiated resilience for wavelength-division multiplexing (WDM) networks with dynamic traffic grooming. Traffic grooming supports efficient utilization of network resources by allowing sub-wavelength granularity connections...
An important problem in optical networking is to dimension the network: given the amount of traffic to carry, determine the required amount of network resources (wavelengths). In traditional scenarios, the traffic is specified in terms of a source-destination based traffic matrix. In an optical Grid scenario however, the anycast principle applies: users submit jobs, and generally do not care where...
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