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| Escaping The Power Dissipation Problem The tremendous bandwidth growth in the next five years will impact fixed networks in access, aggregation and core, initiating disruptive changes in network architectures. As the average revenue per user will grow insignificantly, the requested efficiency increase in cost-per-bit will be close to the forecasted traffic growth of 50% per year.There are, however, major differences in the scaling of access and aggregation/core networks: the total cost is proportional to the number of users in access, whereas in aggregation/core the total cost scales with the number of processed packets. It finally boils down to the following questions: Is the network speed or energy the bottleneck? Is Moore's Law valid for electronic processing in transport? Will the optical packet switch eventually be needed to solve capacity growth? This presentation will discuss the main operational and capital expenditure contributions and the related cost-per-bit and power-per-bit efficiency increase to cope with the traffic growth trends. Specific focus is on optical transport solutions, which not only enhance network efficiency but are also compliant to environmental sustainability parameters, i.e., end-to-end minimization of energy per transported bit. write your comments about the article :: © 2009 Exhibition News :: home page |