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Table 2 Summary on the compared protocols

From: Multichannel MAC protocol with dynamic backoff contention for distributed cognitive radio networks

Protocol

Initial backoff window

Subsequent backoff windows

SMC-MAC(F) [10]

Fixed length

No backoff

SMC-MAC (F&B) [8]

Fixed length

Using binary exponential backoff

The proposed MMAC-DB

Dynamic length

Using dynamic backoff