Method for transferring data via multicast and the system thereof

• US 20050281264A1
• Filed: 01/13/2005
• Published: 12/22/2005
• Est. Priority Date: 06/21/2004
• Status: Abandoned Application

• Current Assignee: Quanta Computer
• Original Assignee: Quanta Computer
• Inventors: Hsu, Shun-Lung, Fu, Ho-Kuei
• Application Number:
  US11/033,825
• Publication Number:
  US 20050281264A1
• Time in Patent Office: Days
• US Class Current: 370/390
• CPC Class Codes: H04L 12/185 with management of multicast group membership

Abstract

The present invention relates to a data transferring method for a multicast system. The multicast system includes a server, a switch and clients. First, the server creates a multicast group and broadcasts the data blocks of a data series sequentially and repeatedly. When clients would like to download the data series from the server in different instances, they join the same multicast group and receive the data blocks from the data block that the server is currently broadcasting. At the same time, the clients also generate a receiving history regarding the data block first received. The clients can determine when to stop receiving the data blocks based on the receiving history.

Claims

1. A data transferring method for a multicast system, the multicast system including a server, a switch, and a plurality of clients, the data transferring method comprising the steps of:

creating a multicast group by the server;

casting a plurality of data blocks of a data series sequentially and repeatedly by the server;

joining the multicast group for receiving the data blocks forwarded by the switch when one of the clients wants to receive the data series at an instance;

receiving the data blocks of the data series from the data block that the server is casting at the instance and generating a receiving history of the data block that the server is broadcasting at the instance; and

determining when to stop receiving the data blocks based on the receiving history.

2. A data transferring method of claim 1, wherein the switch employs IGMP (Internet Group Management Protocol) for managing the multicast group.

3. A data transferring method of claim 1, wherein the data transferring method is employed in an assembly line of a computer manufacturing factory or a system requiring copying massive identical data.

4. A data transferring method of claim 3, wherein the clients are a plurality of computers.

5. A data transferring method of claim 3, wherein the data series is computer software.

6. A data transferring method of claim 5, wherein the data series is an operating system.

7. A multicast system for transferring data, the multicast system comprising:

a server for creating a multicast group and broadcasting a plurality of data blocks of a data series sequentially and repeatedly;

a plurality of clients; and

a switch for forwarding the data blocks to the clients joining the multicast group;

wherein when one of the clients wants to receive the data series at an instance, it joins the multicast group, receives the data blocks of the data series from the data block that the server is currently broadcasting at the instance, generates a receiving history of the data block that the server is currently broadcasting at the instance, and determines when to stop receiving the data blocks based on the receiving history.

8. A multicast system of claim 7, wherein the switch employs IGMP (Internet Group Management Protocol) for managing the multicast group.

9. A multicast system of claim 7, wherein the multicast system is employed in an assembly line of a computer manufacturing factory or a system requiring copying massive identical data.

10. A multicast system of claim 9, wherein the clients are a plurality of computers.

11. A multicast system of claim 9, wherein the data series is computer software.

12. A multicast system of claim 11, wherein the data series is an operating system.