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The Journal of The Korea Institute of Intelligent Transport Systems Vol.7 No.2 pp.81-91
Cognitive Radio 환경을 고려한 에너지 효율적인 MAC 프로토콜
An Energy-efficient MAC Protocol in Cognitive Radio Environment
Abstract
In mobile wireless communications, there is a new approach that uses the lacking spectrum efficiently. A cognitive radio is a device that can changes its transmitter parameters based on interaction with the environment in which it operates. At present, the wireless communication standard for wireless device contains power-saving modes or energy efficient mechanisms which cuts off the power of transmitter and receiver for power-saving. However, in cognitive radio environment, every device has the Quiet Period for searching channel and existing energy-saving method is not appropriate to be adjust to cognitive radio environment. In this paper, we propose an energy-efficient MAC protocol of mobile device in cognitive radio environment and prove the improvement of proposed method.
