Abstract

Next-generation Ethernet passive optical networks (NG-EPON) allow optical network unit (ONU) transmission scheduling concurrently on multiple wavelengths. This increases the network capacity up to 100 Gb/s and increases flexibility, as four wavelengths are used with an individual capacity of 25 Gb/s. However, an optimum dynamic bandwidth allocation (DBA) is required for a spectrally efficient NG-EPON (100 G-EPON). This paper proposes an online gated service DBA algorithm for NG-EPON to assign a flexible number of wavelengths and a dynamic grant size on each upstream wavelength. The assignment is based on the difference between the start time of the wavelengths and the effectiveness in reducing delay by transmitting on multiple wavelengths. Moreover, to evaluate the transmission effectiveness, an optimum criterion alpha is introduced in relation to the number of ONUs in the network. The proposed DBA algorithm’s performance is evaluated in terms of average packet delay, grant utilization, number of wavelengths used, and resequencing delay in comparison to modified-IPACT, the recently proposed First-Fit DBA (FF-DBA), and water-filling-algorithm-based DBA (WF-DBA) algorithms. Simulation results confirmed the validity of the proposed DBA algorithm.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Low-Latency Dynamic Wavelength and Bandwidth Allocation Algorithm for NG-EPON

Syed Baqar Hussain, Weisheng Hu, Haiyun Xin, and Ahmed Mohammed Mikaeil
J. Opt. Commun. Netw. 9(12) 1108-1115 (2017)

Parallel Void Thread in Long-Reach Ethernet Passive Optical Networks

Amr Elrasad and Basem Shihada
J. Opt. Commun. Netw. 7(7) 656-668 (2015)

Double-Phase Polling Algorithm Based on Partitioned ONU Subgroups for High Utilization in EPONs

Sam Yeoul Choi, Sangho Lee, Tae-Jin Lee, Min Young Chung, and Hyunseung Choo
J. Opt. Commun. Netw. 1(5) 484-497 (2009)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription