Under the current and foreseeable limitations of optical technology, performance of the next generation optical network is mainly hampered at the network node by resource contention. Existing work addresses contention...
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Future WDM opticalnetworks are foreseen to be more dynamic and sensitive to failures. Therefore, dynamic service provisioning with network survivability becomes a critical requirement for network planning and managem...
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In this paper, we proposed a novel Burst Drop Policy based on Hop Number Factor (HNF) in the core nodes of TCP over OBS networks, which is combined with Multiple Thresholds in the edge nodes. The proposed drop policy,...
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In this paper, we proposed a novel Burst Drop Policy based on Hop Number Factor (HNF) in the core nodes of TCP over OBS networks, which is combined with Multiple Thresholds in the edge nodes. The proposed drop policy, HNF, takes the retransmission cost into account, and gives the burst with the larger Hop Number Factor the higher priority in the contention. On the other hand, for the retransmission is not always effective, multiple Edge Thresholds, Retransmission Number Threshold (RNT), Traffic load Threshold (TlT) and Total hop Threshold (ThT), are proposed to limit the unnecessary retransmission in the OBS layer. If any of the thresholds is exceeded, the retransmission will be handed over to the upper layer, the TCP layer, which will be more cost-effective. The simulation results show that the combined mechanism can reduce the burst loss rate, decrease the round trip time and improve the throughput of TCP over OBS networks significantly.
An approach of single-mode modulation using injection locked distributed feedback laser for millimetre wave radio over fibre system is proposed and experimentally demonstrated. Single-mode modulation is more chromatic...
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An approach of single-mode modulation using injection locked distributed feedback laser for millimetre wave radio over fibre system is proposed and experimentally demonstrated. Single-mode modulation is more chromatic dispersion tolerant.
We propose a modified FDTD algorithm to design and analyze micro sensitive rotation sensor based on rotating optical element. The algorithm can be applied to photonic structures with various material properties and co...
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We propose a modified FDTD algorithm to design and analyze micro sensitive rotation sensor based on rotating optical element. The algorithm can be applied to photonic structures with various material properties and complex geometric structures.
We present a concept of improving MLSE by diverse reception. Simulation results show CD tolerance of 42.7G NRZ-OOK system is 382 ps/nm at 3 dB OSNR penalty.
We present a concept of improving MLSE by diverse reception. Simulation results show CD tolerance of 42.7G NRZ-OOK system is 382 ps/nm at 3 dB OSNR penalty.
To improve the reliability and scalability that are very important for large-scale all optical fiber sensor networks (AOFSN), three-level hierarchical sensor network architectures are proposed. The first two levels co...
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We propose a novel distributed reservation scheme in which signaling packets collect OXCs configuration status of each available wavelength. It will minimize the number of switch fabrics reconfigured and significantly...
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ISBN:
(纸本)9781557528599
We propose a novel distributed reservation scheme in which signaling packets collect OXCs configuration status of each available wavelength. It will minimize the number of switch fabrics reconfigured and significantly shorten the connection setup time.
Queuing performance of finite single-wavelength FDL buffer is studied analytically in OPS networks. The evaluation approach can be applied on practical buffer system implementation.
Queuing performance of finite single-wavelength FDL buffer is studied analytically in OPS networks. The evaluation approach can be applied on practical buffer system implementation.
In this paper, we investigated designing multicast-capable optical cross-connects (MC-OXCs) on a basis of the 4- stage multicast network. Firstly, we derive the sufficient wide- sense nonblocking (WSNB) and rearrangea...
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In this paper, we investigated designing multicast-capable optical cross-connects (MC-OXCs) on a basis of the 4- stage multicast network. Firstly, we derive the sufficient wide- sense nonblocking (WSNB) and rearrangeable nonblocking (RNB) conditions for the 4-stage multicast network with only two (the second and output) stages being multicast-capable. Both WSNB and RNB 4-stage multicast networks need 0( N 3/2 ) crosspoints. Then MC-OXCs empoying the WSNB and RNB 4-stage multicast network are proposed and proven to be power efficient in reducing the total power loss caused by light splitting.
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