2019
DOI: 10.1364/jocn.11.000b37
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Low-Latency and Energy-Efficient BBU Placement and VPON Formation in Virtualized Cloud-Fog RAN

Abstract: Cloud Radio Access Networks (CRAN) allow to reduce power consumption in future 5G networks by decoupling BaseBand Units (BBU) from cell sites and centralizing the baseband processing from Remote Radio-Heads (RRH) in BBUs pools in a cloud. Although this centralization can enable power savings, it imposes much higher traffic on the optical transport network used to connect RRHs to the BBU pool, i.e., the fronthaul. In this paper we propose a hybrid Cloud-Fog RAN (CF-RAN) architecture that resorts to fog computin… Show more

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Cited by 30 publications
(17 citation statements)
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“…In addition, resiliency aspects are not considered in Reference [29]. The work in Reference [30] proposes an ILP and a heuristic for the deployment of cloud fog RAN. The authors conduct an extensive analysis of the trade-offs among the minimization of propagation latency and power consumption, but no mention of reliability aspects against failures is made.…”
Section: Introductionmentioning
confidence: 99%
“…In addition, resiliency aspects are not considered in Reference [29]. The work in Reference [30] proposes an ILP and a heuristic for the deployment of cloud fog RAN. The authors conduct an extensive analysis of the trade-offs among the minimization of propagation latency and power consumption, but no mention of reliability aspects against failures is made.…”
Section: Introductionmentioning
confidence: 99%
“…Graph-Based Heuristic algorithms were proposed by the authors in [72]. Type of problem is the integer linear programming (ILP) problem, the objective is to increase the energy efficiency under association and capacity threshold constraints for hybrid cloud-fog RAN (CF-RAN) architecture.…”
Section: Challenges With Solutionsmentioning
confidence: 99%
“…Most of these focus on BBU-RRH dynamical resource mapping to save energy. The rationale is to switch off idle BBUs in BBU pool [28], [29]. Similarly, there are also some works putting RRHs with light load into sleep mode [30], [31].…”
Section: A Prior Workmentioning
confidence: 99%