公开(公告)号：CA2270702A1

公开(公告)日：1999-12-24

申请号：CA2270702

申请日：1999-05-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SABNANI KRISHAN KUMAR ,  LIN CHUENG-HSIEN ,  PAUL SANJOY

IPC: G06F17/30 ,  H04L1/16 ,  H04L12/18 ,  H04L29/06 ,  H04L29/08 ,  H04L12/16

Abstract: In an arrangement that employs a push-pull paradigm, information that is to be communicated to clients is broadcast, or multicast, to cache servers, wherein the information is cached in preparation for its being pulled by clients. By pushing information to points close to the clients, both source overload and network overload are avoided. The pushed information in the disclosed approach is transmitted over Internet links, or over other communication channels, such as cable and radio systems. In operation, clients subscribe to specific services of the provider, an association is established between the subscribing client and a cache server, and the server informs the network that it should be included among the destinations to which information from the provider is transmitted. When information is subsequently transmitted by the provider and received by the cache servers, it is stored in the cache server in preparation for its being pulled by the clients, as desired and when desired.

公开(公告)号：CA2244333A1

公开(公告)日：1999-02-26

申请号：CA2244333

申请日：1998-07-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： PAUL SANJOY ,  AGGARWAL SUDHIR

IPC: H04L12/18 ,  H04L12/56

Abstract: A system and method for multicast conferencing and online discussion groups using a periodically determined a close-to-optimal Steiner spanning tree. Both the system and method are suitable for stationary and/or mobile group members.