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Evaluating C-RAN Fronthaul Functional Splits in Terms of Network Level Energy and Cost Savings
Aleksandra Checko,Andrijana P. Avramova,Michael S. Berger,Henrik L. Christiansen 한국통신학회 2016 Journal of communications and networks Vol.18 No.2
The placement of the complete baseband processing in acentralized pool results in high data rate requirement and inflexibilityof the fronthaul network, which challenges the energy andcost effectiveness of the cloud radio access network (C-RAN). Recently,redesign of the C-RAN through functional split in thebaseband processing chain has been proposed to overcome thesechallenges. This paper evaluates, by mathematical and simulationmethods, different splits with respect to network level energy andcost efficiency having in the mind the expected quality of service. The proposed mathematical model quantifies the multiplexinggains and the trade-offs between centralization and decentralizationconcerning the cost of the pool, fronthaul network capacityand resource utilization. The event-based simulation captures theinfluence of the traffic load dynamics and traffic type variation ondesigning an efficient fronthaul network. Based on the obtained results, we derive a principle for fronthauldimensioning based on the traffic profile. This principle allows forefficient radio access network with respect to multiplexing gainswhile achieving the expected users’ quality of service.
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Silvia Golem,Andrijana Rogošić,Goran Dedić 한국외국어대학교(글로벌캠퍼스) 러시아연구소 2022 REGION Vol.11 No.2
European Public Sector Accounting Standards (EPSAS) are being introduced by the European Commission to facilitate the harmonization of public sector accounting standards across the European Union countries. The main aim of this research is to explore the existing level of awareness, attitude, and expectations of public sector accountants at the subnational levels of government towards implementation of EPSAS in Croatia. Additionally, this paper explores the relationship between the existing level of public sector transparency, as perceived by public sector accountants, and the expected outcomes of EPSAS implementation. The findings suggest that public sector accountants are quite skeptical regarding the outcomes of EPSAS implementation. Among the positive effects, public sector accountants point to an expected increase of accountability and budget control, and greater transparency of public expenditures. Finally, the findings indicate that higher existing levels of budgetary transparency, as perceived by public sector accountants, lead to anticipation of more favorable effects of EPSAS.
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Evaluating C-RAN Fronthaul Functional Splits in Terms of Network Level Energy and Cost Savings
Checko, Aleksandra,Avramova, Andrijana P.,Berger, Michael S.,Christiansen, Henrik L. The Korea Institute of Information and Commucation 2016 Journal of communications and networks Vol.18 No.2
The placement of the complete baseband processing in a centralized pool results in high data rate requirement and inflexibility of the fronthaul network, which challenges the energy and cost effectiveness of the cloud radio access network (C-RAN). Recently, redesign of the C-RAN through functional split in the baseband processing chain has been proposed to overcome these challenges. This paper evaluates, by mathematical and simulation methods, different splits with respect to network level energy and cost efficiency having in the mind the expected quality of service. The proposed mathematical model quantifies the multiplexing gains and the trade-offs between centralization and decentralization concerning the cost of the pool, fronthaul network capacity and resource utilization. The event-based simulation captures the influence of the traffic load dynamics and traffic type variation on designing an efficient fronthaul network. Based on the obtained results, we derive a principle for fronthaul dimensioning based on the traffic profile. This principle allows for efficient radio access network with respect to multiplexing gains while achieving the expected users' quality of service.
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