US 6130892

Patent Overview — US6130892A

Title: Nomadic translator or router

Patent number: US6130892A (application US09/041,534)

Inventors: Joel E. Short and Leonard Kleinrock

Assignee: Nomadix Inc (original assignee), later recorded as NOMADIX, INC; NOMADIX, LLC appears in assignment records

Priority date: 1997-03-12

Filing date: 1998-03-12

Grant/publication date: 2000-10-10

Legal status: Expired – Lifetime; anticipated expiration recorded 2017-03-12

Purpose (from the definitions section): The invention "generally relates to the art of digital communications, and more specifically to a portable translator or router which enables a user digital communication terminal to be location and device transparent." A stated motivation is that IP addresses are conventionally tied to a fixed physical location (e.g., a business telephone line), while portable devices such as laptop computers are increasingly used from varied locations like hotel rooms and airplanes, so communications addressed to the user's communication address are not associated with the remote location to which the device is connected.

Plain-language scope (as far as the excerpt shows): The patent describes a portable translator/router that addresses the mismatch between location-bound communication addresses and nomadic devices. It notes that hosts and routers must each be configured to know where to send packets; routers receive packets only if hosts specifically address packets to them, and a host with a bad address cannot be reached properly. The classifications include routing/path finding (H04L45/00), address mapping and allocation including DHCP/BOOTP (H04L61/00, H04L61/09, H04L61/10, H04L61/25, H04L61/5014), provisioning/mobility (H04L61/5084, H04L41/0806), and Mobile IP (H04W80/04).

Source: https://patents.google.com/patent/[US6130892](/patent/US6130892)/en

What the excerpt does not establish: The claims, detailed embodiments, and figures are not included in the supplied text, so the precise claimed scope cannot be stated. The excerpt also does not itself establish the accuracy of the listed assignees, priority date, or legal status (Google Patents expressly labels these as assumptions); it does not provide the specification's full description; and no prior-art analysis, validity assessment, or litigation findings are made here.