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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 4 — Apr. 1, 2009
  • pp: 344–347

Cyclic polling-based dynamic wavelength and bandwidth allocation in wavelength division multiplexing passive optical networks

Zhengcheng Xie, Hui Li, and Yuefeng Ji  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 4, pp. 344-347 (2009)


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Abstract

Cyclic polling-based dynamic wavelength and bandwidth allocation algorithm supporting differentiated classes of services in wavelength division multiplexing (WDM) passive optical networks (PONs) is proposed. In this algorithm, the optical line terminal (OLT) polls for optical network unit (ONU) requests to transmit data in a cyclic manner. Services are categorized into three classes: expedited forward (EF) priority, assured forwarding (AF) priority, and best effort (BE) priority. The OLT assigns bandwidth for different priorities with different strategies. Simulation results show that the proposed algorithm saves a lot of downstream bandwidth under low load and does not show the light-load penalty compared with the simultaneous and interleaved polling schemes.

© 2009 Chinese Optics Letters

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

Citation
Zhengcheng Xie, Hui Li, and Yuefeng Ji, "Cyclic polling-based dynamic wavelength and bandwidth allocation in wavelength division multiplexing passive optical networks," Chin. Opt. Lett. 7, 344-347 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-4-344

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