Integrated Hybrid Optical Networking (IHON) /Fusion for 5G Access Networks

TL;DR

This paper evaluates an integrated hybrid optical network (IHON) approach for 5G access, demonstrating its capacity to meet QoS requirements and optimize wavelength utilization through simulation and analysis.

Contribution

It introduces a fusion node implementing IHON principles in Ethernet for 5G, analyzing its performance and capacity limits in terms of delay, packet loss, and wavelength utilization.

Findings

IHON meets 5G QoS requirements for PDV, delay, and PLR.

Wavelength utilization reaches up to 92% with statistical multiplexing.

Network node count affects maximum link length between BBU and RRH.

Abstract

Today, deployment of optical fiber has offered large transmission capacity which cannot be efficiently utilized by the electronic switches. Rather, Integrated Hybrid Optical Network (IHON) is a promising approach which combines both packet and circuit switching techniques. As a result, it achieves efficient utilization of the bulk capacity and guarantees absolute Quality of Service (QoS) by optimizing the advantages of the two switching schemes while diminishing their disadvantages. Transpacket has developed a Fusion node implementing IHON principles in Ethernet for the data plane. Hence, this paper investigates and evaluates IHON network for 5G access networks. The simulated results and numerical analysis confirm that the Packet Delay Variation (PDV), Delay and Packet Loss Ratio (PLR) of Guaranteed Service Transport. (GST) traffic in IHON network met the requirements of 5G mobile fronthaul using CPRI. The number of nodes in the network limits the maximum separation distance between Base Band Unit. (BBU) and Remote Radio Head (RRH), link length; for increasing the number of nodes, the link length decreases. In addition to this, we verified how the leftover capacity of fusion node can be used to carry the low priority packets and how the GST traffic can have deterministic characteristics on a single wavelength by delaying it with Fixed Delay Line (FDL). For example, for LSM 1GE=0.3 the added Statistical Multiplexing (SM) traffic increases the 10GE wavelength utilization up to 89% without any losses and with SM PLR=0.001 up to 92% utilization.