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Methods and systems for providing different data loss protection

A data, non-protection technology, applied in the direction of digital transmission system, transmission system, electrical components, etc.

Inactive Publication Date: 2010-08-04
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Heretofore, these results have not been achieved in the field

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  • Methods and systems for providing different data loss protection
  • Methods and systems for providing different data loss protection
  • Methods and systems for providing different data loss protection

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Embodiment Construction

[0022] Referring to the drawings, in which like numerals refer to like elements, the present invention relates to a method and apparatus for providing UEP via FEC in a time slice through MPE-FEC in DVB-H. Although the invention is described herein with respect to DVB-H, those skilled in the art will understand that the error correction algorithms taught herein are applicable to IP datagrams used in other modulation formats and transmission schemes (such as VSB), where the algorithm Modified appropriately to accommodate different data syntaxes of other schemes. As described here in relation to the DVB-H format, the invention is based on a modified MPE-FEC frame structure, which is in Figure 4 generally shown. Compared to the original MPE-FEC frame, the original ADT obtained according to the present invention is preferably virtually divided into "protected regions" (PR) 110 and "unprotected regions" (UR) 120 along the column direction of the frame.

[0023] Figure 5 A prefe...

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Abstract

This invention relates to methods and apparatus for partitioning a data word into a protected region and an unprotected region in the link layer, forward error correction of a DVB-H module to provide unequal error protection of frames during forward error correction of the frames. IP-datagrams are encapsulated for coding after a pre-loading stage is initiated so that the reliability and importance of data in data frames corresponding to the IP-datagrams can be determined. Unequal error protection is further achieved by padding zeros in the unprotected region.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application Serial No. 60 / 966,791, filed August 30, 2007. technical field [0003] The present invention relates to data transmission systems. More particularly, the present invention relates to a data transmission system utilizing a data frame format encoded in the DVB-H format and receiving Unequal Error Protection (UEP) through a Forward Error Correction (FEC) technique. Background technique [0004] User data delivered over the DVB-H system suffers from loss due to channel imperfections introduced during transmission. Link Layer, Forward Error Correction (MPE-FEC) is the module in DVB-H that provides error protection against data loss. User data often exhibit differences in importance or error sensitivity, which means that it may be beneficial to apply different strengths of error protection. However, MPE-FEC can only provide equal error protection per time sli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04N21/2383
CPCH04L1/007
Inventor 吴镇宇吉尔·麦克唐纳德·伯恩斯艾伦·杰伊·斯坦
Owner THOMSON LICENSING SA
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