Residential communications gateway (RCG) for broadband communications over a plurality of standard POTS lines, with dynamic allocation of said bandwidth, that requires no additional equipment or modifications to the associated class 5 offices or the PSTN at large

What is this patent about?

'156 is related to the field of telecommunications, specifically addressing the challenge of providing enhanced communication services to residential and small business customers over existing Plain Old Telephone Service (POTS) lines. The background involves Competitive Local Exchange Companies (CLECs) seeking to compete with Local Exchange Companies (LECs) without incurring the high infrastructure costs associated with technologies like DSL and cable.

The underlying idea behind '156 is to create a Residential Communications Gateway (RCG) that combines the functionalities of an IP router, a Class 5 circuit switch, and a wireless LAN in a single device. This gateway leverages packetized data and Voice over Internet Protocol (VoIP) technologies, along with RF communications, to transmit voice, data, and video over existing POTS lines, effectively creating multiple virtual lines and broadband access without requiring upgrades to the central office.

The claims of '156 focus on a method for aggregating, sharing, and dynamically routing bandwidth from multiple wired and wireless networks distributed over a wide area. This involves creating and updating a network table of nearby RCGs, determining the optimal bandwidth needed for a data transfer, selecting supporting RCGs based on their unused bandwidth and distance, requesting bandwidth, receiving responses, selecting RCGs for optimal use, sending control information, transmitting data packets, reassembling packets at the requesting RCG, and relinquishing bandwidth.

In practice, the RCG is installed in a residence and connected to the existing POTS line. It then connects to a service provider via a modem connection to establish a constant network connection. The RCG can then offer up to three separate telephone numbers over a single POTS line, along with broadband access and other advanced features. When a requesting RCG needs more bandwidth, it can use its wireless interface to find nearby RCGs and request access to their unused POTS bandwidth, creating a multilink PPP connection to achieve higher data transfer rates.

This approach differentiates itself from prior solutions like DSL and cable by eliminating the need for costly infrastructure upgrades at the central office. Unlike Internet-based VoIP services, the RCG aims to provide a guaranteed Quality of Service (QoS) by prioritizing voice traffic and dynamically allocating bandwidth. Furthermore, the RCG's ability to create a multilink PPP connection allows it to achieve broadband-like speeds over existing POTS lines by leveraging the unused bandwidth of neighboring RCGs, offering a cost-effective solution for ubiquitous high-speed communications.