Browse > Article

Class Gated Dynamic Bandwidth Allocation Algorithm for supporting QoS in the EPON  

Hwang Jun-Ho (School of Electronic Engineering, Soongsil University)
Kim Hyo-Won (School of Electronic Engineering, Soongsil University)
Yoo Myung-Sik (School of Electronic Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.5, 2006 , pp. 94-103 More about this Journal
Abstract
Ethernet passive optical network (EPON) has drawn many attention as a promising access network technology for FTTH because it can provide a high bandwidth with a low cost. Since the uplink bandwidth in the EPON system is shared by many users, it is necessary for an EPON system to have an efficient bandwidth allocation mechanism. To support QoS in EPON, the previous bandwidth allocation schemes employ strict priority queueing (SPQ). Since SPQ gives unlimited priority to higher service class, the QoS of lower service classes gets worse. In this paper, we propose Class Gated DBA (Dynamic Bandwidth Allocation) algorithm in which the bandwidth is requested / granted in a service class basis. To avoid the monopoly in bandwidth usage by higher classes the maximum bandwidth that is allocate to each service class is limited (fairness between services classes). In addition, to avoid the monopoly in bandwidth usage by some particular users, each ONU runs fairness bandwidth allocation algorithm within each service classes. Through computer simulations, it is verified that the proposed algorithm achieves a good level of QoS, and at the same time maintains a good level of fairness between both service classes and users.
Keywords
FTTH; Ethernet PON; QoS;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. Kramer, B. Mukherjee, S. Dixit, Y. Ye, and R. Hirth, 'Supporting differentiated classes of service in EPON-based access network,' Journal of Optical Networks, Vol. 1, No. 8/9, pp. 280-298, 2002
2 C. Assi, Y. Ye, S. Dixit, M. Ali., 'Dynamic bandwidth allocation for quality of service over ethernet PON,' IEEE Journal on Selected Areas in Communications, Vol. 21, No.9, pp. 1452- 1466, Nov. 2003   DOI   ScienceOn
3 Media Access Control Parameters, Physical Layers and Management Parameters for Subscriber Access Networks, IEEE Draft P802.3ah/D1.0TM, Aug. 2002
4 김동일, 김창호, 'Ethernet 트래픽의 장기간 의존성 및 Self-similar 트래픽소스 모델링에 관한 연구' ,Telecommunications Review, Vol. 11, No.6, pp. 868-886, 2001. 11-12월
5 G. Kramer, G.Peasvento, 'Ethernet Passive Optical Network (EPON): Buliding a Next-Generation Optical Access Network,' IEEE communications Magazine, Vol. 40, No.2, pp. 66-73, Feb. 2002   DOI   ScienceOn
6 G. Kramer, B. Mukherjee, and G. Pesavento, 'IPACT: A dynamic protocol for an ethernet PON (EPON),' IEEE communications Magazine, Vol. 40, No.2, pp. 74-80, Feb. 2002   DOI   ScienceOn
7 K. Richards, 'Is Ethernet the ticket for trial and wait PON customers?,' Lightwave, April, 2002, http://www.pennnet.com
8 G. Pesavento and M. Kelsey, 'PONs for the Broadband Local Loop,' Lightwave, Vol.16, No.10, 68-74, Sept. 1999