Browse Prior Art Database

PLC enhanced security service for home using watthour meter

IP.com Disclosure Number: IPCOM000033368D
Original Publication Date: 2004-Dec-08
Included in the Prior Art Database: 2004-Dec-08
Document File: 4 page(s) / 68K

Publishing Venue

IBM

Abstract

A broadband network access system that utilizes an existing PLC (Power Line Communication) network to reach users.

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PLC enhanced security service for home using watthour meter

Disclosed is a broadband network access system that utilizes an existing PLC (Power Line Communication) network to reach users. The system is composed of broadband media, such as the FTTH (Fiber To The Home) and a medium voltage PLC, a PLC router at the power pole, several gateway devices at every entrance of the power line into home, an existing pubic PLC network between the transformer and the gateway devices, and existing private PLC networks in homes isolated from the public PLC network by the gateway devices. Using the gateway device is the key feature in this disclosure and it is typically integrated into the watt-hour meter for the home as shown in Figure 1.

The PLC router is connected at the power pole with the FTTH or other broadband media to the public PLC network, and provides the disclosed system with broadband network access, for example, to the Internet.

The public PLC network reaches from the transformer to each gateway device. It is typically managed by the power company, and shared by all of the homes whose electricity is supplied by the same transformer.

The gateway device, which isolates the private PLC network in each home from the public PLC network, consists of a PLC filter, a low-pass filter which cuts off the PLC signal band on the power line, and a PLC network router.

The PLC filter is not only for physically isolating the signal of the public PLC network from the private PLC network, but also for providing independence and security/privacy features to the private PLC network. All incoming and outgoing PLC signals are terminated at this point, and rely on the PLC network router to be forwarded or dropped.

The PLC network router is remotely controlled by the service provider depending on the contracts with each home. The service provider will provide subscribing homes with the broadband services, e.g. Internet access and telephony using VoIP (Voice over IP), while th...