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Improved ip datagram de-encapsulation

A technology of decapsulation and data grouping, applied in data switching networks, broadcasting devices, digital transmission systems, etc., and can solve problems such as inefficiency and ineffective solutions.

Inactive Publication Date: 2013-01-02
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So, the straightforward solution is neither efficient nor efficient

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  • Improved ip datagram de-encapsulation
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Embodiment Construction

[0022] Those of ordinary skill in the art should understand that the following description is provided for purposes of illustration and not limitation. Those skilled in the art will appreciate that there are many variations within the spirit of the invention and scope of the appended claims. Unnecessary detail of known functions and operations may be omitted from the current description so as not to obscure the present invention.

[0023] The system and method of the present invention provides an IP decapsulation method wherein, in addition to correctly received segments, partially correctly received segments are processed to recover as much as possible from the segment payload, In the case of DVB-H, the segment payload includes an IP datagram and parity data belonging to an additional layer of forward error correction (MPE-FEC).

[0024] Referring to Figure 1a, the MPE-FEC frame 100 is a byte table with 255 columns and a flexible number of rows, where each row is a codeword ...

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Abstract

An apparatus (1001), system (1000) and method (800-900) are provided for improving the de-encapsulation of sections from Multi Protocol Encapsulation (MPE) (151) and Multi Protocol Encapsulation-Forward Error Correction (MPE-FEC) (152) Sections in a DVB-H transport stream. DVB-H is a standard for broadcasting services to hand-helds. Its difference from DVB-T, C, and S that is relevant for this invention is the presence of an additional layer of Forward Error Correction (FEC). Instead of restoring only correctly received sections (151) (152) the present invention also restores fragments of sections (151) (152) by using both Transport Stream packet headers (301. i.1) and section headers (151.1). As a result, entire sections (800-900) may not be erased (which can amount to up to 4080 bytes) whenever one or more fragments are received incorrectly, but only the incorrectly received fragments (which can be each up to 184 bytes) are erased. This leads to a more efficient use of the additional layer of Forward Error Correction (FEC) information.

Description

technical field [0001] The present invention relates to a system and method for digital video broadcast handheld (DVB-H) datagram decapsulation. Background technique [0002] DVB-H is the new European Telecommunications Standards Institute (ETSI) standard for providing Digital Video Broadcasting (DVB) services to handheld devices (e.g. mobile phones), see Digital Video Broadcasting (DVB); DVB-H Implementation Guidelines, ETSI 1XX XXX V0.1.0(2004-09), the content of which is incorporated as a reference. The provisions made in this standard support low power receiver implementations. Like the existing ETSI standards DVB-S, C and T, in DVB-H the information is broadcast in so-called transport streams, typically multiplexed MPEG-2 encoded programmes. [0003] DVB-H is based on DVB-T and is fully backward compatible. DVB-H provides additional features to support handheld portable and mobile reception allowing power saving, high data rate mobility, single antenna reception, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L12/00H04L47/43
CPCH04L1/0045H04L1/0057H04H60/11
Inventor 奥利耶·G·C·科普拉尔卢多维克斯·M·G·M·托于泽奥诺·艾斯伯格
Owner TAIWAN SEMICON MFG CO LTD