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B-SMART

Which time-spectrum block should be reserved…?

How long…? How wide…?  

B-SMART (distributed spectrum allocation over white spaces)

Design Principles

1. Try to assign each flow blocks of bandwidth B/N

2. Choose optimal transmission duration t

B: Total available spectrum

N: Number of disjoint flows

Long blocks:

Higher delay

Short blocks:

More congestion on control channel

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