Title:
誤り制御オンデマンド
Document Type and Number:
Japanese Patent JP5647991
Kind Code:
B2
Abstract:
The present invention relates to a new error control paradigm in a packet switched network that is particularly advantageous for multicast transmission. A transmission Status vector TSV (T) is updated at the sender side whenever a new outgoing data packet (Dj-1) is scheduled for transmission. A corresponding Reception Status Vector RSV (R) is similarly updated at the receive side whenever a new incoming and correctly indexed data packet (Dj-1) is validly received. As soon as a missing or corrupted data packet (Dj) is detected, the update of the RSV is suspended. A request is then sent to the sender to get the current TSV's value, or a part thereof. The erroneous data packet is then recovered from the current TSV'S value (sk,m), from the lastly updated RSV'S value (sj-1), and from otherwise validly received data packets (Dj+1, ..., Dk). The present invention more specifically relates to a transmitting unit (100) and a receiving unit (200) implementing that paradigm, and correspondingly to a method for protecting a flow of indexed data packets against data lost or data corruption, and a method for recovering a missing or corrupted data packet within a flow of indexed data packets.
Inventors:
ラーバン，コアンラード
ドウ，フレエーシヤウウエル・ダニー
ドウグランドウ，ナタリー
ドウ，フレエーシヤウウエル・ダニー
ドウグランドウ，ナタリー
Application Number:
JP2011538877A
Publication Date:
January 07, 2015
Filing Date:
November 24, 2009
Export Citation:
Assignee:
アルカテル−ルーセント
International Classes:
H04L1/00; H04L1/16
Attorney, Agent or Firm:
In the patent business corporation Kawaguchi 國 case, it is a patent firm.