Optical Coarse Packet Switching (OCPS) IP-over-WDM network enabling technology

The OCPS paradigm supports per-burst rather than per-packet switching by advocating the enforcement of traffic control and traffic engineering to achieve wavelength-based statistical multiplexing gain and Quality of Services (QoS). Major research tasks include: QoS burstification control; traffic scheduling/shaping and admission control; architectural design and performance analysis of all-optical switches with fiber delay lines and full/partial wavelength sharing; preventive contention control and reactive wavelength contention resolution; and network/bandwidth optimization.

Design and construction of phase-II OCPS IP-over-WDM network (OPSINET-II)

We study the design and construction of OCPS-based Phase-II OPSINET, i.e., OPSINET-II. OPSINET-II is targeted on 10 Gb/s data transport, facilitated with four newly designed key sub-systems: (i) FDL-augmented optical label switch router with FPGA-based header processing and header/payload synchronization; (ii) multi-level ASK-based header/payload multiplexing and label swapping; (iii) 10 Gb/s burst mode transceiver; and (iv) high-performance wavelength converter. The full-grown traffic control and traffic engineering from topic (1) will also be implemented as part of GMPLS and FPGA hardware in OPSINET-II.

Network and Application QoS: Fairness and Differentiation

We propose the mechanisms for providing the fairness in Network QoS and then the differentiation in Application QoS. Unlike the IntServ and DiffServ architectures which require infrastructure changes on Internet backbone, our approach places the QoS mechanisms at end points and edge-side gateways.