The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2009
Filed:
Dec. 28, 2000
Malcolm M Smith, Morrisville, NC (US);
Malcolm M Smith, Morrisville, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A wireless communications system includes a mobile unit having a home network and a home agent in the home network. The system also includes foreign networks with foreign agents that provide wireless services to the mobile unit when the mobile unit travels outside of the service area of the home network. Foreign agents providing or likely to provide services for the mobile unit receive information for communication to the mobile unit by registering for a multicast group associated with the mobile unit. The home agent distributes information for communication to the mobile unit by encapsulating the information in multicast packets and communicating these packets for reception by the foreign agents registered for the multicast group.