Patent ID: 6028866
Filing Date: 2000-02-22
Classification: G08C,H04L,H04W

Abstract:
A communication system comprising a sending apparatus and a receiving apparatus communicating via a wireless communication medium;said receiving apparatus comprising message receiving means for receiving via said wireless communication medium a message destined for said receiving apparatus;said sending apparatus comprising message sending means for transmitting a message via said wireless communication medium, characterised:in that said system comprises at least three end apparatuses and a central apparatus; each end apparatus and the central apparatus being a sending apparatus as well as a receiving apparatus;in that each end apparatus comprises execution means for executing a group application; said group application, while being executed by said execution means, communicating application messages to a corresponding group application in at least one other end apparatus via said central apparatus;in that said message sending means of each end apparatus is configured to send said application messages only to said central apparatus;in that said central apparatus comprises group resolution means for, upon said message receiving means receiving a first application message from a first one of said end apparatuses, determining a group of end apparatuses for which said first application message is destined and for causing said message sending means to transmit said first application message to end apparatuses of said group.