Optimised QoS-aware DBA mechanisms in XG-PON for upstream traffic in LTE backhaul
Arokkiam, Jerome A.
Sreenan, Cormac J.
Brown, Kenneth N.
Institute of Electrical and Electronics Engineers (IEEE)
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.
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
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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