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Reservation information sharing enhancement for deflection routing in OBS network.
Optics Express
|June 5, 2009
Summary
The Resource Information Sharing Enhancement (RISE) scheme significantly reduces burst contention probability in Just-Enough-Time optical burst switching networks. This new method improves upon deflection routing, especially under heavy traffic loads.
Area of Science:
- Computer Science
- Telecommunications Engineering
- Network Engineering
Background:
- Resource contention is a critical issue in Just-Enough-Time (JET) based optical burst switching (OBS) networks.
- Deflection routing (DR) offers some reduction in contention probability but is less effective under heavy traffic loads.
Purpose of the Study:
- To analyze the causes of contention in OBS networks.
- To propose an improved routing scheme, the Resource Information Sharing Enhancement (RISE) scheme, to mitigate contention.
Main Methods:
- Theoretical analysis of the proposed RISE scheme.
- Simulation of the RISE scheme on a full mesh network and the 14-node NSFNET.
Main Results:
- Theoretical analysis indicates RISE achieves a shorter detour path length compared to standard DR.
- Simulation results demonstrate up to a 2-order magnitude improvement in reducing burst contention probability compared to previous routing approaches.
Conclusions:
- The RISE scheme effectively addresses resource contention in JET-OBS networks.
- RISE offers a significant performance improvement over existing routing strategies, particularly under high traffic conditions.
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