Modeling of LTE back-hauling through OFDMA-PONs

Wansu Lim, Pandelis Kourtessis, Konstantinos Kanonakis, Milos Milosavljevic, Ioannis Tomkos, J.M. Senior

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


This paper evaluates a novel mapping and scheduling scheme which allows efficient control over the quality-of-service (QoS) experienced by long term evolution (LTE) users when backhauled over an orthogonal frequency division multiple access-passive optical network (OFDMA-PON). With respect to mapping, the LTE QoS class identifiers (QCIs) are assigned to the OFDMA-PON priorities based on class-of-service (CoS) differentiation. Scheduling involves the allocation of subcarriers to each optical network unit/enhanced node B (eNB/ONU) ensuring that the bandwidth allocation accounts for the QoS requirements of the respective LTE wireless bearers. Since the transmission pipes allocated to each eNB/ONU are to be shared by all CoS queues, fairness across traffic priorities throughout the network is achieved by introducing a weighted dynamic subcarrier assignment (WDSA) algorithm. Simulations are based on a 10Gbps OFDMA-PON with 1024 subcarriers, 20km reach and 32 eNB/ONUs. Performance evaluation figures confirm that the end-end wireless packet delay and queue lengths of the high priority queues benefit significantly from the application of the WDSA algorithm without failing the rest of the network performance
Original languageEnglish
Title of host publicationProcs 17th Int Conf on Optical Network Design and Modeling (ONDM)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages240 - 245
ISBN (Print)978-1-4799-0491-4
Publication statusPublished - 2013
Event17th Int Conf on Optical Network Design and Modeling - Brest, France
Duration: 16 Apr 201319 Apr 2013


Conference17th Int Conf on Optical Network Design and Modeling


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