Patent ID: 7724724
Filing Date: 2010-05-25
Classification: H04B,H04L,H04W

Abstract:
1. A communication apparatus connected to a plurality of ANs (access networks) for wirelessly communicating with a plurality of ATs (access terminals), comprising: a memory for storing information of transmission rates of respective data flows to be transmitted from said ANs to said ATs; and a processor for calculating, based on the transmission rates of the respective data flows of said memory, a fixed value transmission cycle necessary for transmitting one of more data flows periodically at regular intervals from said ANs to said plurality of ATs in a broadcast multicast manner and necessary radio resources for said data flows, the radio resource including transmission start timing within the fixed value transmission cycle and transmission duration within the fixed value transmission cycle, and the processor further for transmitting control information to said ANs, the control information including said fixed value transmission cycle, identifiers of data flows to be transmitted, the transmission start timing for each data flow within the fixed value transmission cycle and the transmission duration for each data flow within fixed value transmission cycle, wherein the processor controls the plurality of ANs to send to the plurality of ATs, the control information in synchronization with the fixed value transmission cycle, the processor controls the plurality of ANs to multicast or broadcast same part of the data flows to the plurality of ATs simultaneously on same frequency according to the control information, and when the processor is required to additionally send a new data flow or delete existing data flow, the processor determines the transmission start timing for each data flow within the fixed value transmission cycle to update the control information such that the ANs can multicast or broadcast the data flows according to the undated control information.