US 7,515,872 B2
Distributed Caching and Redistribution System and Method in a Wireless Data Network
Frank Hundscheidt, Kerkrade (Netherlands); Heino Hameleers, Kerkrade (Netherlands); Ralf Keller, Würselen (Germany); and Thorsten Lohmar, Aachen (Germany)
Assigned to Telefonaktiebolaget L M Ericsson (Publ), Stockholm (Sweden)
Appl. No. 10/556,179
PCT Filed May 09, 2003, PCT No. PCT/IB03/01826
§ 371(c)(1), (2), (4) Date Mar. 06, 2007,
PCT Pub. No. WO2004/100493, PCT Pub. Date Nov. 18, 2004.
Prior Publication US 2007/0243821 A1, Oct. 18, 2007
Int. Cl. H04H 1/00 (2006.01)
U.S. Cl. 455—3.01  [455/414.1; 455/41.2; 455/3.03; 709/238; 709/245] 22 Claims
OG exemplary drawing
 
1. A distributed caching and redistribution system for caching and redistributing data content in a wireless data network, said system comprising:
transmission means for transmitting in an initial data transmission from the network the data content directly to mobile clients operating in the wireless data network;
at least one redistributing mobile client that receives and caches the transmitted data content;
a requesting mobile client having means for requesting redistribution of the data content, wherein anycast messaging is utilized in the wireless data network to identify a redistributing mobile client determined to be the nearest redistributing mobile client having the content available; and
wherein the identified redistributing mobile client includes redistribution means for redistributing the data content from the redistributing mobile client to the requesting mobile client in response to the redistribution request.