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In this paper, we have proposed a new type of power supply system that uses a single pair of wires to provide various specifications of electric power. The IEEE 802.3af (a.k.a. Power over Ethernet)  is a technology that can transmit electricity over Unshielded Twisted Pair cables, however, this technology provides only 48 V DC and does not provide any networking functions. In contrast, our system abstracts electric power into packets and uses a network protocol to transmit them appropriately. We have designed our system to be flexible and extensible. Our motivation is to build a large- scale power supply network similar to the Internet. Hence, we have developed our MAC layer protocol on the basis of the Ethernet protocol which has strong affinity with Internet Protocol.
Date of Conference: 17-21 June 2007