研究目的
Investigating the effect of path establishment method priorities over routing performance in mixed line rate (MLR) wavelength division multiplexed (WDM) optical networks.
研究成果
Assigning higher priority to single hop methods as compared with multi‐hop methods yields better performance. In both methods, assigning higher priority to grooming reduces the communication cost and the traffic blocking ratio while enhancing the resource utilization.
研究不足
The study considers only the physical lengths of the paths to calculate their feasible line rates, simplifying the impact of other factors like physical impairment, modulation scheme, and crosstalk impairment.
1：Experimental Design and Method Selection:
The study involves preparing detailed simulation scenarios with all possible prioritizations of path establishment methods and observing their performances.
2：Sample Selection and Data Sources:
Dynamic traffic requests are generated with uniformly distributed source and destination node pairs, with bandwidth requirements varying between 1 Gbps to 10 Gbps.
3：List of Experimental Equipment and Materials:
Simulations are performed on NSF and EON optical networks.
4：Experimental Procedures and Operational Workflow:
The SRRWA algorithm is used with LU and LC path first heuristics with shared and dedicated PAL.
5：Data Analysis Methods:
Performance metrics such as bandwidth blocking ratio (BBR), total communication cost (TCC), lightpath utilization ratio (LUR), and sharing gain ratio (SGR) are evaluated.
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