Yawei Yin

Experimental comparison of high-speed transmission control protocols on a traffic-driven labeled optical burst switching network test bed for grid applications

It is well known that the classic transmission control protocol (TCP) Reno is inadequate to address the requirements of emerging grid applications on an optical burst switching (OBS) network. To find the most efficient TCP in the scenario of grid over OBS, in this paper, the implementation of a traffic-driven labeled OBS (LOBS) network test bed is presented and the performance of several prominent high-speed TCPs, including HSTCP, TCP Westwood, and FAST TCP, are experimentally compared over the test bed. A modified theoretical model for TCP Reno over OBS is investigated, which is more accurate in modeling TCP Reno throughput compared with previous works and can further verify the experimental results.

A resilient OBS/GMPLS network for survival optical grids

Survivability is a key issue in optical grids. In this paper, a resilient Optical Burst Switching (OBS) / Generalized Multi-Protocol Label Switching (GMPLS) network scenario, in which both the protection/restoration in the OBS layer and GMPLS layer and the resilient resource discovery and management scheme are experimentally demonstrated and theoretically analyzed. The results show that the proposed solutions are feasible and efficient.

Experimental demonstration of OSPF-TE extensions in multi-domain OBS networks connected by GMPLS network

The interworking network of Generalized Multi-Protocol Label Switching (GMPLS) and Optical Burst Switching (OBS) is attractive network architecture for the future IP/DWDM network nowadays. In this paper, OSPF-TE extensions for multi-domain Optical Burst Switching networks connected by GMPLS controlled WDM network are proposed, the corresponding experimental results such as the advertising latency are also presented by using an OBS network testbed. The experimental results show that it works effectively on the OBS/GMPLS networks.

Experimental evaluation of the extended JET protocol in support of TDM services

This paper experimentally evaluated the extended JET protocol supporting periodic TDM circuits on an OBS testbed. The results showed that the proposed scheme can dynamically support both non-periodic and periodic bandwidth resource requirements.

Experimental demonstration of dynamic end-to-end lightpath provisioning mechanism in OBS/GMPLS interworking network

Multi-layer Provisioning (MLP) of End-to-End light-path in OBS/GMPLS interworking network is successfully demonstrated by introducing extensions to MPLS signaling protocol in LOBS network. The feasibility of this mechanism was experimentally verified in an OBS/GMPLS testbed. In contrast to pervious single-layer resource provision mechanism, MLP ensures stable and high throughput of Reno TCP transportation.

Testbed of OBS/GMPLS interworking

A testbed of OBS/GMPLS interworking network is established with the supporting of the BUPT-KDDI cooperation project. A dedicated GMPLS border controller with necessary GMPLS extensions and some OBS extensions are introduced in this network to achieve a dynamic, efficient and transparent inter-domain Burst Header Packet (BHP) and Data Burst (DB) transmissions over the GMPLS-controlled Optical Circuit Switching OCS network. The dynamic restoration in the OBS domain and the GMPLS protection/restoration in the OCS network are implemented in this testbed to demonstrate streaming media transmission in the multilayer network with different QoS requirements.

Experimental demonstration of a service oriented labeled optical burst switching network with SIP based service plane

To address the demands of emerging applications or services which require not only the network resources but also the non-network resources, a new optical burst switching (OBS) network scenario is proposed and demonstrated in this paper. This scenario can be referred to as service oriented labeled OBS network, in which a Session Initiation Protocol (SIP)-based service plane is introduced. This service plane can obtain the network and non-network resource information from OBS control plane and computational resource respectively, and is responsible for translating user request, discovering and managing resources through standard SIP messages. By enhancing the functionalities of our labeled OBS test-bed, the feasibility and efficiency of proposed network scenario is successfully verified. As SIP is a standard protocol with flexible session control capability, we believe the proposed scenario is beneficial for promoting the OBS technology to be widely deployed in the future.

Proposal of dynamic protection/restoration schemes for QoS support in labeled optical burst switching networks

In this paper, two novel protection and restoration schemes were proposed by using the BC and BR schemes which were originally designed to reduce the bursts loss probability due to contention in OBS network. The 1+1 protection scheme in LOBS can be easily carried out using the MPLS 1+1 protection scheme in the 2.5 layer and burst cloning scheme in the OBS layer. By introducing some new OSPF-TE opaque LSA messages, the burst retransmission scheme can be transplanted into the restoration scheme in LOBS network. Furthermore, the dynamic quality of resilience mechanism to inherit these two schemes according to the QoS requirement of the traffic was also investigated. Experimental study using a LOBS network test bed verified that the proposed schemes suited well in the LOBS network.

Proposal of a multi-layer network architecture for OBS/GMPLS network interworking

In order to enable the existing optical circuit switching (OCS) network to support both wavelength and subwavelength granularities, this paper proposes overlay-based multi-layer network architecture for interworking the generalized multi-protocol label switching (GMPLS) controlled OCS network with optical burst switching (OBS) networks. A dedicated GMPLS border controller with necessary GMPLS extensions, including group label switching path (LSP) provisioning, node capability advertisement, and standard wavelength label as well as wavelength availability advertisement, is introduced in this multi-layer network to enable a simple but flexible interworking operation. The feasibility of this proposal is experimentally confirmed by demonstrating an OBS/GMPLS testbed, in which the extended node capability advertisement and group LSP functions successfully enabled the burst header packet (BHP) and data burst (DB) to transmit over a GMPLS-controlled transparent OCS network.