Title:
プッシュツートークにおける送信品質を向上する方法及び装置
Document Type and Number:
Japanese Patent JP4482027
Kind Code:
B2
Abstract:
The present invention relates to methods and arrangements to enhance transmission quality in a Push-to-Talk system comprising a sending mobile unit MB1, and a receiving mobile unit MB2 used by a receiving subscriber B. The receiving unit MB2 comprises a Play-Out-Buffer POB and a Repeat Buffer RB, whereby a stream of sequences 15-19,25-29,35-39 is sent from the sending unit MB1 to the receiving unit MB2. The method comprises the following steps:—The incoming stream of sequences 15-19,25-29,35-39 is collected into the Repeat Buffer RB and into the Play-Out-Buffer POB. The Play-Out-Buffer has a storage size and a point for commencing play-out that provides low voice delay, and the Repeat Buffer has a storage size that provides high sound quality. —The incoming stream is played-out from the Play-Out-Buffer POB to the receiving subscriber B. —Replay is commenced of a defined part 36-39 of the sequences 15-19,25-29,35-39 collected in the Repeat Buffer RB.
Inventors:
Sougforth, mats
Application Number:
JP2007508297A
Publication Date:
June 16, 2010
Filing Date:
April 15, 2004
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
H04M3/42; H04L1/18; H04W4/10; H04W88/02
Domestic Patent References:
| JP2000354025A |
Foreign References:
| WO2003015358A2 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama