Abstract: The present invention relates to a power line communication based supplemental service meter gateway and a casing structure thereof, a power line communication system and a method using the same, in which a supplemental service meter gateway is provided whereby value-added services are provided in addition to remote meter readings based on a power line communication network, and power inspection for remote readings and service measurements in response to the value-added services can be respectively and independently implemented.

Abstract: packet communication method of a powerline communication system in which a packet communication through a powerline can be made by acquiring a channel according to a priorty order in response to a time delay value set at nodes that have a bigger time delay value than other nodes, wherein the priority is placed by setting a time delay value of a node, which does not take a channel due to the current priority order, at ½ of a maximum value of a prior time delay value range and the priority is also applied to the competition of a channel among other nodes.

Abstract: A method for transmitting an adaptive multi-channel packet in power line communication system comprises the steps of: (a) transmitting a packet from a first node to a second node with a predetermined transmission speed through a power line by using a multi-channel in communication from the first node and the second node; (b) checking an error of the packet transmitted from the step (a) in the second node, thereafter loading the check result to the packet and transmitting it to the first node through the power line by using a multi-channel; (c) checking the result of the packet transmitted from the step (b) in the first node, and storing the check result as a database; (d) transmitting the packet to the second node with any one among the current, downgraded or upgraded transmission speeds through the power line according to the packet transmission success/failure information stored as the database in the step (c); and (e) transmitting the packet with a stable transmission speed according to the multi-channel b

Abstract: Disclosed an open type electricity meter having an open type communication module.

Abstract: A method for transmitting an adaptive multi-channel packet in power line communication system comprises the steps of: (a) transmitting a packet from a first node to a second node with a predetermined transmission speed through a power line by using a multi-channel in communication from the first node and the second node; (b) checking an error of the packet transmitted from the step (a) in the second node, thereafter loading the check result to the packet and transmitting it to the first node through the power line by using a multi-channel; (c) checking the result of the packet transmitted from the step (b) in the first node, and storing the check result as a database; (d) transmitting the packet to the second node with any one among the current, downgraded or upgraded transmission speeds through the power line according to the packet transmission success/failure information stored as the database in the step (c); and (e) transmitting the packet with a stable transmission speed according to the multi-channel b

Abstract: The present invention relates to a technique for modulating a signal to be transmitted by multiple channel frequency shift keying, transmitting the same through a power line and then demodulating it easily by frequency conversion. By the multiple channel frequency shift keying (FSK) modulation, attenuation or distortion caused by noise and multi-path fading in a power line communication channel can be prevented, and the performance for phase response characteristics can be improved.

Abstract: Disclosed an open type electricity meter having an open type communication module.