Optimised QoS-aware DBA mechanisms in XG-PON for upstream traffic in LTE backhaul
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Date
2016-08
Authors
Arokkiam, Jerome A.
Sreenan, Cormac J.
Brown, Kenneth N.
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Institute of Electrical and Electronics Engineers (IEEE)
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Abstract
Passive Optical Networks (PON) are viewed as an attractive choice to provide flexible and cost-efficient backhaul for Long Term Evolution (LTE) cellular base stations (eNB). PONs, such as the 10-Gigabit capable PON (XG-PON), use a Dynamic Bandwidth Allocation (DBA) mechanism to multiplex the shared upstream medium between competing sending nodes. Due to the complex definitions of QoS for DBA in XG-PON, it is a challenge for the XG-PON to respect the Quality of Service (QoS) requirements for different aggregated upstream applications in the LTE backhaul, in particular voice, live video and best-effort Internet traffic. In this paper, we first evaluate two recent XG-PON-standard-compliant DBAs - XGIANT and Efficient Bandwidth Utilisation (EBU) - for mean queuing-delay performance, with regard to priority and fairness, when the realistically-generated upstream voice, video and best-effort applications are aggregated at the evolved Node B (eNB) in LTE. We show that neither XGIANT nor EBU satisfy the priority and fairness requirements for mean queuing-delay. We propose and evaluate two optimised DBAs - Deficit XGIANT (XGIANT-D) and Proportional XGIANT (XGIANT-P). Our evaluations of the optimised DBAs, in the ns-3 network simulator, show that both XGIANT-D and XGIANT-P are able to ensure strictly prioritised, low and fair mean-queuing-delays for eNB-aggregated voice, video and best-effort traffic in two loaded conditions in XG-PON upstream. XGIANT-D and XGIANT-P, when compared with XGIANT and EBU, also ensure lower packet losses for eNB-aggregated upstream traffic in the XG-PON-based LTE backhaul.
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Keywords
Simulation , QoS , DBA , XG-PON , LTE , Backhual , XGIANT , EBU , ns-3 , Queuing delay , Datarate , XGIANT-D , XGIANT-P , Long Term Evolution, , Quality of service, , Passive optical networks, , Resource management, , Optical network units, , EPON, , IEEE 802.3 Standard , Telecommunication traffic, , Bandwidth allocation, , Long Term Evolution, , Passive optical networks, , Quality of service, , Queueing theory
Citation
Arokkiam, J. A., Brown, K. N. and Sreenan, C. J. (2016) 'Optimised QoS-Aware DBA Mechanisms in XG-PON for Upstream Traffic in LTE Backhaul', 2016 IEEE 4th International Conference on Future Internet of Things and Cloud Workshops (FiCloudW), Vienna, Austria, 22-24 August, pp. 361-368. doi: 10.1109/W-FiCloud.2016.79
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