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تقاضایبخشی از حداکثر نرخ ارسالی ترافیک
The simplest approach utilizes a full wavelength to carry a subrate demand, thereby wasting the remaining capacity of the wavelength.
Given a set of subrate demands, there typically is no single optimal design to groom the demands into wavelengths.
For example, one design could favor mini- mizing cost at the expense of routing demands over very circuitous paths, whereas another design could place a greater emphasis on minimizing path length and reserv- ing capacity for future subrate demands.
Rather than covering the spectrum of grooming algorithms that have been developed over time, Sect. 6.8 focuses on one grooming methodology that has produced cost-effective and capacity-efficient designs when applied to re- alistic optical networks, while maintaining a rapid run time even with a very large number of subrate demands.
Once the subrate demands have been grouped into a wavelength, they can be treated as if they are a single demand; i.e.
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