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Open AccessArticle

C-RAN Traffic Aggregation on Latency-Controlled Ethernet Links

1
Department of Electrical, Electronic, and Information Engineering (DEI), University of Bologna, 40136 Bologna, Italy
2
Transpacket AS, 0275 Oslo, Norway
*
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(11), 2279; https://doi.org/10.3390/app8112279
Received: 12 October 2018 / Revised: 11 November 2018 / Accepted: 14 November 2018 / Published: 18 November 2018
Centralized/Cloud Radio Access Networks (C-RAN) are deployed in converged fixed-mobile networks to exploit the flexibility coming from joint application of Network Function Virtualization (NFV) and Software Defined Networking (SDN). In this context, optical links connecting C-RAN nodes, possibly based on the Ethernet standards, may carry traffic with different requirements in terms of latency and throughput. This paper considers the problem of traffic aggregation on C-RAN optical Ethernet links with latency control for fronthaul traffic and throughput capability for backhaul traffic. Integrated hybrid network technique is applied to show how time transparency can be enforced for Ethernet encapsulated Common Public Radio Interface (CPRI) traffic while allowing statistical multiplexing of backhaul traffic. Simulation results show the effectiveness of segmentation of backhaul traffic to allow exploitation of the available bandwidth even with high capacity CPRI options. View Full-Text
Keywords: hybrid optical networks; Ethernet; fronthaul; backhaul; C-RAN; convergence; CPRI hybrid optical networks; Ethernet; fronthaul; backhaul; C-RAN; convergence; CPRI
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MDPI and ACS Style

Tonini, F.; Khorsandi, B.M.; Bjornstad, S.; Veisllari, R.; Raffaelli, C. C-RAN Traffic Aggregation on Latency-Controlled Ethernet Links. Appl. Sci. 2018, 8, 2279.

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