Analysis of effect of load-based excess bandwidth reservation on performances of differentiated services in E-PON

Performances of differentiated services in the upstream transmission of Ethernet passive optical network (E-PON) are affected by bandwidth reservation algorithm of an optical network unit, since data packets can be transmitted to an optical line termination only during the reserved transmission window. The effects of time-slot reservation on differentiated services are analysed and an adaptive class-based excess bandwidth reservation algorithm, called service quality pre-engagement (SQP), which reserves a time-slot based on the backlog queue and traffic arrival pattern of class is proposed. SQP applies the prediction-based bandwidth reservation to selected forward reservation classes (FRCs) which are determined by the introduced dynamic FRC selection. The proposed short-term service work-based time-slot reservation and long-term adaptive FRC selection optimise time-slot reservation according to traffic load of class. Analytic and simulation results show that this approach improves the performance of differentiated services, especially in terms of system buffer size, light-load penalty and service fairness, while guaranteeing high link utilisation and throughput.

[1]  Biswanath Mukherjee,et al.  Ethernet PON (ePON): Design and Analysis of an Optical Access Network , 2001, Photonic Network Communications.

[2]  Hongseok Kim,et al.  Sliding cycle time-based MAC protocol for service level agreeable Ethernet passive optical networks , 2005, IEEE International Conference on Communications, 2005. ICC 2005. 2005.

[3]  Chang-Hee Lee,et al.  Fiber-to-the-home services based on wavelength-division-multiplexing passive optical network , 2004 .

[4]  Yonggyu Lee,et al.  A QoS Based Service Reservation: Supporting Multiple Service in Optical Access Networks , 2004, ECUMN.

[5]  Walter Willinger,et al.  On the Self-Similar Nature of Ethernet Traffic ( extended version ) , 1995 .

[6]  Ki-Tae Jeong,et al.  Fiber-tothe-Home Services Based on Wavelength-Division-Multiplexing Passive Optical Network , 2004 .

[7]  Minho Kang,et al.  Performance enhancement of differentiated services in E PON: smaller buffer and efficient traffic service isolation , 2005, OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..

[8]  Walter Willinger,et al.  On the self-similar nature of Ethernet traffic , 1993, SIGCOMM '93.

[9]  Dimitri P. Bertsekas,et al.  Data Networks , 1986 .

[10]  Sudhir S. Dixit,et al.  Dynamic bandwidth allocation for quality-of-service over Ethernet PONs , 2003, IEEE J. Sel. Areas Commun..

[11]  Biswanath Mukherjee,et al.  Supporting differentiated classes of service in Ethernet passive optical networks , 2002 .

[12]  Jae-Doo Huh,et al.  Dynamic Bandwidth Allocation Algorithm for Multimedia Services over Ethernet PONs , 2002 .

[13]  Carl M. Harris,et al.  Fundamentals of queueing theory , 1975 .

[14]  Nirwan Ansari,et al.  Dynamic upstream bandwidth allocation over Ethernet PONs , 2005, IEEE International Conference on Communications, 2005. ICC 2005. 2005.

[15]  Biswanath Mukherjee,et al.  IPACT: A dynamic protocol for an Ethernet PON (EPON) , 2002, IEEE Commun. Mag..

[16]  Kin K. Leung,et al.  A single-server queue with vacations and gated time-limited service , 1989, IEEE INFOCOM '89, Proceedings of the Eighth Annual Joint Conference of the IEEE Computer and Communications Societies.