On the design of optical buffer for optical input-queued switches with quality of service guarantees

This paper presents a quality of service (QoS) enable optical delay line (ODL) architecture to solve the problem of resource contention and support multilevel priority queues in an optical packet switch. ODL has been used in optical packet switches to resolve resource contention; however, the packets travel continuously in ODL limits the management of random access of the packets and increases the packet loss probability. Moreover, multiple ODL sets usually are needed to realize multiple priority queues in order to support QoS. In this paper, a new Unicast Recirculatiion ODL (URODL) architecture is proposed to resolve the output contention problem in an input-queued optical packet switch. To improve relatively poor throughput due to the head of Line (HOL) blocking in the input-queued switch, we modify URODL to support a more efficient window-based lookahead scheduling algorithm. Furthermore, a control strategy is designed to turn a single set of URODL into multiple logical queues to hold different priority packets. The simulation results show our URODL model reduces packet loss effectively with the capability to support QoS. This URODL model can be easily implemented and managed in a fast optical packet switch.

[1]  Mark J. Karol,et al.  Queueing in high-performance packet switching , 1988, IEEE J. Sel. Areas Commun..

[2]  Carla Raffaelli,et al.  Design of a WDM optical packet switch for IP traffic , 2000, Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137).

[3]  Ivan Andonovic,et al.  2 2 Buffered Switch Fabrics for Traffic Routing , Merging , and Shaping in Photonic Cell Networks , 1997 .

[4]  Eiji Oki,et al.  Broadband Packet Switching Technologies , 2001 .

[5]  Rodney S. Tucker,et al.  Wavelength routing-based photonic packet buffers and their applications in photonic packet switching systems , 1998 .

[6]  Carla Raffaelli,et al.  Exploitation of DWDM for optical packet switching with quality of service guarantees , 2002, IEEE J. Sel. Areas Commun..

[7]  Rodney S. Tucker,et al.  A new wavelength-routed photonic packet buffer combining traveling delay lines with delay-line loops , 2001 .

[8]  Duan-Shin Lee,et al.  Using switched delay lines for exact emulation of FIFO multiplexers with variable length bursts , 2006, IEEE J. Sel. Areas Commun..

[9]  R. Theodore Hofmeister,et al.  CORD: Contention Resolution by Delay Lines , 1996, IEEE J. Sel. Areas Commun..

[10]  Peter Legg,et al.  2/spl times/2 buffered switch fabrics for traffic routing, merging, and shaping in photonic cell networks , 1997 .

[11]  R. Olshansky,et al.  All-optical packet-switched metropolitan-area network proposal , 1993 .

[12]  Jung-Tsung Tsai.  Architectures of 2-to-1 COD multiplexers for asynchronous packet arrivals , 1997, 1997 2nd IEEE International Workshop on Broadband Switching Systems Proceedings, IEEE BSS '97. Workshop Theme 'Switching Systems for the Broadband Internet and for QoS on Demand' (Cat. No.97TH8352).

[13]  Chunming Qiao,et al.  QoS performance of optical burst switching in IP-over-WDM networks , 2000, IEEE Journal on Selected Areas in Communications.

[14]  Hiroaki Harai,et al.  Contention resolution using multi-stage fiber delay line buffer in a photonic packet switch , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[15]  R.S. Tucker,et al.  A new wavelength-routed photonic packet buffer combining parallel delay-lines with delay-line loops , 1999, Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications,.

[16]  Andrea Fumagalli,et al.  A delay line receiver architecture for all-optical networks , 1996, Proceedings of IEEE INFOCOM '96. Conference on Computer Communications.

[17]  N. Calabretta,et al.  All-optical buffering in all-optical packet switched cross connects , 2002, IEEE Photonics Technology Letters.