| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable all client computers to receive information sent from a server computer by multicasting by dividing respective client computers as transmission destinations into multicast groups, according to receiving capacity information and broadcasting requested information by using transfer rates which are independent of one another by the multicast groups. SOLUTION: A server computer 10 takes reception information inputted from each client computer 12 into account and divides the client computers 12 into multicast groups. For example, when client computers 12(C1) and 12(C2) have low receiving capacity and client computers 12(C3) and 12(C4) have high reception capacity, the client computers 12(C1) and 12(C2) are put in a multicast group (1) with a relative low transfer rate to transfer information, and the client computers 12(C3) and 12(C4) are put in a multicast group (2) with a relatively high transfer rate to transfer the information.</p> |
