Novel Queue-Grouping Based Round-Robin Protocols for Reducing Collision of OBS Ring Networks

Peng, Limei; Li, Bingbing; Yang, Won-Hyuk; Kim, Young-Chon; Li, Xinwan

doi:10.1109/icns.2009.45

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…Therefore, this part investigates the network scalability by evaluating the network performance under different network sizes. In order to have a comparison with the previous unidirectional ring network in [14][15][16][17], the average burst size simulated in the part is set to 200 Kbit, and the other parameters are the same with the previous two parts. The networks with different sizes, said 32, 80, and 160 km, using the transceiversharing-based node architecture and the CoRR scheme are simulated and evaluated.…”

Section: Results Analysis For Evaluating the Network Scalabilitymentioning

confidence: 99%

“…In our previous research, we have focused on solving the contention problem for tunable transmittertunable receiver (TT-TR)-based OBS unidirectional ring networks. Various multiple-token-based MAC protocols have been proposed to solve the source and channel contention [14,15], and various queue-grouping-based MAC protocols have been proposed to solve receiver contention, respectively [16,17]. All of them are with the help of the control information table (CIT).…”

Section: Introductionmentioning

confidence: 99%

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On the design of node architectures and MAC protocols for optical burst-switched ring networks

2010

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Efficient multiple-token-based MAC protocols have been proposed for optical burst-switched (OBS) unidirectional ring networks using a TT-TR-based node architecture in our previous research. However, the unidirectional OBS ring network is difficult to scale to larger networks. As wavelengths accessibilities are dominated by tokens, network performance is restricted by the frequency of capturing a token. If the network is too large, it takes a long time for tokens to rotate. Thus, a destination queue may wait for a long time to be served, which results in large queuing delays and inefficiency of network resource utilization. In order to improve network efficiency and scalability for OBS ring networks using multiple tokens, this work is extended to a bidirectional ring system that uses the tunable transmitter and tunable receiver (TT-TR)-based node architecture with two pairs of transceivers, so that each queue can be served by tokens from both directions. Furthermore, two kinds of node architectures differing in sharing the two pairs of transceivers, either shared or not, are proposed. Then, two MAC protocols considering different queue scheduling algorithms are proposed for the ring network using the proposed node architectures, in order to use the network resources more efficiently. They are improved from general round-robin (GRR) and termed as half-ring round-robin (HfRR) and co-work round-robin (CoRR), respectively. The network performance of the two proposed node architectures and the two proposed MAC protocols for the networks using them as well as the network scalability are evaluated with the OPNET simulator.

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Section: Results Analysis For Evaluating the Network Scalabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the design of node architectures and MAC protocols for optical burst-switched ring networks

2010

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“…The TT-TR based OBS ring network can use the network resource efficiently and flexible, however with high contention problem. Contention problems for the TT-TR based unidirectional OBS ring network were studied, and various MAC protocols were proposed in our previous work [6][7][8][9][10]. After that, the proposed MAC protocols were applied to the TT-TR based bidirectional ring networks and the load balancing problem was then considered.…”

Section: Introductionmentioning

confidence: 99%

QoS Provisioning for TT-TR Based OBS Ring Networks

Peng

Kim

Tang

et al. 2011

Joc

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Optical burst switching (OBS) is one of the most promising switching technologies. This paper studies the efficient OBS ring network using the TT-TR based node architecture. The TT-TR based OBS ring network can use the network resources very efficiently, but the network performance is restricted due to the limited network resources. Moreover, different network demands have different network resource requirements. It is very important to satisfy their different requirements while using the limited network resources efficiently. In this paper, Quality of Service (QoS) provisioning mechanisms are studied to solve the above mentioned problems. Two kinds of network services, namely the real-time traffic and the best-effort traffic, are considered in this paper. The real-time service is delay-sensitive that should be transmitted in a real-time manner and cannot tolerate high transmission delay; while the best-effort traffic has no strict limitation in transmission delay or loss, but the best effort are made to improve their transmission reliability. According to their different servicing requirements, different QoS provisioning mechanisms are proposed to serve them in the OBS unidirectional and bidirectional ring networks, respectively. The proposed mechanisms are evaluated and analyzed through simulation. The simulation results show that even though the proposed mechanisms cannot get absolute zero-delay or zero-loss for real-time traffic or best-effort traffic, their different requirements for delay or loss are satisfied to some significant degree.

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“…At the beginning of nth frame, the WA first computes the total number of available slots in the next frame, S a (n+1), which is the minimum of the slots not being reserved or the slots claimed by a received fair rate sent from the downstream node at the next frame. The S a (n+1) is given by (2) where C is the link capacity in unit of slots per frame, A t (n+1) is the amount of the reserved slots by the upstream nodes (the arrival rate of transit traffic in unit of slots) in the (n+1)st frame, and F r (n) is the received fair rate, which is one of the advertised fair rates sent from the downstream nodes and is obtained from the WR of the other ringlet. The S a (n+1) will be sent to the scheduler to generate G(n+1).…”

Section: Wavelength Assignment and Traffic Controlmentioning

confidence: 99%

“…Each OBS node employs transmitters and receivers to send and receive data traffic. A more scalable and flexible system with tunable transmitter-tunable receiver (TT-TR) architecture makes efficient use of network resources and supports good scalability [2].…”

Section: Introductionmentioning

confidence: 99%

A wavelength assignment and traffic control scheme in reservation slotted OBS rings

Tang

Hsieh

Chang

et al. 2011

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)

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Novel Queue-Grouping Based Round-Robin Protocols for Reducing Collision of OBS Ring Networks

Cited by 3 publications

References 5 publications

On the design of node architectures and MAC protocols for optical burst-switched ring networks

On the design of node architectures and MAC protocols for optical burst-switched ring networks

QoS Provisioning for TT-TR Based OBS Ring Networks

A wavelength assignment and traffic control scheme in reservation slotted OBS rings

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