Title:
一斉通信システム、呼制御サーバ、および通信方法
Document Type and Number:
Japanese Patent JP5828071
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce a time required from a calling request to the start of simultaneous communication, irrespective of the number of second terminals for data reception at simultaneous communication.SOLUTION: A first terminal 1 transmits a calling request to a call control server 3 (S201). On receipt of the calling request, the call control server 3 performs multicast transmission of the calling request to a plurality of second terminals 21, 22, 23 which are to be reception terminals at the simultaneous communication (S202). When an evaluation unit in the call control server 3 obtains an evaluation result indicating that communication bands are secured between the first terminal 1 and the plural second terminals 21, 22, 23, by the trigger thereof, the call control server 3 replies a success response to the first terminal 1, the calling terminal (S203). On receiving the success response from the call control server 3 after the transmission of the calling request, the first terminal 1 performs multicast transmission of data to the plurality of second terminals 21, 22, 23 through simultaneous communication, after the lapse of a certain time (S204).
Inventors:
Motohiro Oi
Naoki Umeda
Tomohide Furuya
Naoki Umeda
Tomohide Furuya
Application Number:
JP2011182884A
Publication Date:
December 02, 2015
Filing Date:
August 24, 2011
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H04M3/00; H04L12/70; H04L12/911; H04M9/00
Domestic Patent References:
| JP2010177814A | ||||
| JP2009188519A | ||||
| JP2000286897A | ||||
| JP2007235681A |
Foreign References:
| US20080025293 |
Attorney, Agent or Firm:
Keisei Nishikawa