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Coordinating channel access is a fundamental task of the MAC layer in wireless networks. Whereas most proposed medium access techniques involve a pure contention-based mechanism or a centralized polling scheme, the authors explore distributed scheduling-based medium access. Intuitively, a scheduling-based scheme would achieve higher bandwidth efficiency and a lower collision rate than contention-based mechanisms. They develop the Self-Organized Distributed Channel Access (SODCA) scheme that combines the advantages of both contention and scheduling mechanisms. Distinctively from other proposed solutions, SODCA does not incur any additional overhead and is a distributed, highly efficient, compatible, and a dynamic schedule establishment scheme.
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