在標準的IEEE 802.11通訊協定中，訂定每個行動主機在傳送封包時，採用理想性的最大功率傳送，但是很容易受到外在的干擾，而造成能源不必要的消耗。因此，在IEEE 802.11 MAC層通訊協定中，內有載波偵測和RTS/CTS的技術，來解決大部分的干擾問題，特別運用在無線隨意網路(Ad-Hoc)的系統架構。無線隨意網路架構，是指不需要連接有線網路，也不需要有基地台，短距離傳輸功率的網路。
然而，也有許多相關的研究提出不同的MAC層通訊協定，來改善干擾問題，但是多半會造成更多能源不必要的損失。
因此，在這篇論文中，提出了簡單且有效的方法，經過模擬證明，這個方法，不但能達到省電方式，更能保持傳輸品質不降低的情況下,能防止干擾的發生，並在原有的訊號雜訊比規格下SNR(signal to noise ratio)，調整傳送端的距離，評估點與點(peer-to-peer)之間最佳的傳輸距離，並維持點與點之間封包傳輸所需的最小能量，而達到省電的功能。

In the standard IEEE 802.11 MAC protocol, it defines each mobile host using ideal maximum transmission power to transmit, but it is very easy to suffer interference problem from outside environment and consume additional energy. Therefore, IEEE 802.11 MAC layer provides Carrier Sense Multiple Access/Collision Avoidance (physical carrier sensing) and RTS/CTS handshake (virtual carrier sensing) techniques, so that it can solve most of interference problems, specially utilized in the Ad Hoc networks. In Ad Hoc standards, it connects neither wired networks (like PSTN) nor base-stations, and it can achieve a great effect on transmitted power by short distance.
However, many related researches also proposed different MAC protocols to solve or improve interference problems, but most of them will maybe cause more power consumptions at the same time.
In this paper, we propose a simple and efficient power control method to verify the power saving by simulation. It not only achieves the power saving, but also keeps not reducing high signal received quality from interference. In original specification of SNR (signal to noise ratio), we can adjust the distance of transmission and find out the optimal range of “peer-to-peer”, so that we can keep the minimum transmitted power to achieve power saving.

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