COMMUNICATION SYSTEM AND METHOD, RELAY DEVICE, TERMINAL DEVICE AND PROGRAM

Title:

COMMUNICATION SYSTEM AND METHOD, RELAY DEVICE, TERMINAL DEVICE AND PROGRAM

Document Type and Number:

Japanese Patent JP2009111746

Kind Code:

A

Abstract:

To prevent transfer of an unwanted multicast packet.

Terminal devices 113B-2 and 113C-1 belonging to a multicast group B each transmit a multicast address notice packet in which a multicast address B corresponding to the multicast group B is set as a transmission source at a predetermined timing to a broadband router 111. The broadband router 111 and layer 2 switches 112A-112C each learn the multicast address B in a port at which the multicast address notice packet has been received. The packet of the multicast group B transmitted from a multicast server 251 is transferred through a port which has learned the multicast address B, and received by terminal devices 113B-2 and 113C-1. This system and method are applicable to a home network system, for example.

Inventors:

SHIGEI HIROYUKI

Application Number:

JP2007282198A

Publication Date:

May 21, 2009

Filing Date:

October 30, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SONY CORP

International Classes:

H04L12/46

Domestic Patent References:

JP2004297521A	2004-10-21
JP2007067515A	2007-03-15
JP2007274202A	2007-10-18
JP2005217989A	2005-08-11
JP2007013808A	2007-01-18
JP2007251817A	2007-09-27
JP2007049495A	2007-02-22

Foreign References:

WO2005036831A1

2005-04-21

Other References:

JPN6012032811; 太田　聡　他: '適応的マルチキャストによるトラヒック平滑化の効果' 電子情報通信学会技術研究報告（信学技報）　ＩＮ２００２-１９ , 20020613
CSNG200400063004; 太田　聡　他: '適応的マルチキャストによるトラヒック平滑化の効果' 電子情報通信学会技術研究報告（信学技報）　ＩＮ２００２-１９ , 20020613

Attorney, Agent or Firm:

Yoshio Inamoto
Takashi Nishikawa

Previous Patent: TERRESTRIAL DIGITAL BROADCAST RECEIVING ANTENNA

Next Patent: RELAY DEVICE AND METHOD, AND PROGRAM