06141347 is referenced by 111 patents and cites 10 patents.

A wireless communication system 200 comprises a connectionless packet network 201 coupled to a plurality of sites 203-208 that are in wireless communication with a plurality of subscriber units 210-217 logically arranged into a plurality of talk groups having corresponding talk group identifications. In one embodiment, each site maintains mappings 220-225 of at least one multicast address to at least one talk group identification. In another embodiment, individual subscriber units maintain such mappings 320. When a subscriber unit affiliates with a given site and talk group (501, 601), the site identifies a multicast address corresponding to the talk group. Based on the multicast address, the site can participate in traffic targeted for the multicast address and, consequently, for the talk group. In this manner, mobility Processing is decentralized, system calability is improved and call setup delays are minimized.

Title
Wireless communication system incorporating multicast addressing and method for use
Application Number
9/283121
Publication Number
6141347
Application Date
March 31, 1999
Publication Date
October 31, 2000
Inventor
Mario F DeRango
Wauconda
IL, US
Bhavesh G Patel
Naperville
IL, US
Surender Kumar
Schaumburg
IL, US
James E Mathis
Barrington
IL, US
Mark Shaughnessy
Algonquin
IL, US
Agent
Susan L Lukasik
Assignee
Motorola
IL, US
IPC
H04L 12/46
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