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An auxiliary graph (AG) is designed to address traffic grooming under dynamic traffic scenario in spatial division multiplexing enabled elastic optical networks (SDM-EON). Various traffic grooming policies are achieved by adjusting the edge weights of AG, and evaluated through simulation in terms of spectrum efficiency and inter-core crosstalk. Numeric results show that the proposed SDM grooming reduces...
Optical-Enabled cloud radio access network (CRAN) divides legacy base station into remote radio heads (RRH) and centralized baseband units (BBU) pools. In this paper, we focus on the improvement of BBU resource utilization, and propose a BBU aggregation by dynamically awaking and sleeping BBU cards under time-geometry pattern. We discuss the BBU capacity model, and two heuristic algorithms are developed...
This paper addresses the problem of gradual migration from fixed grid to flex grid. We discuss how to perform spectrum assignment in a mixed fixed/flex network, and we propose and compare three upgrade strategies under two traffic models in four different scenarios.
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