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Determining loss of IP packets

A data grouping and serial number technology, applied in selective content distribution, electrical components, transmission systems, etc., can solve problems affecting data or service quality

Active Publication Date: 2013-06-12
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may affect the quality of the data or services contained in the data packets and provided to the user

Method used

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  • Determining loss of IP packets
  • Determining loss of IP packets
  • Determining loss of IP packets

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] refer to figure 1 , shows an example of a communication network 101 . The communication network 101 includes a network 102 (such as the Internet), and a content server 103 is connected to the network 102 . The content server 103 is connected to a database 104 on which content such as video, audio and other types of data is stored. The content server 103 is connected via the network 102 to a plurality of content recipients in the form of client devices, such as TVs 105 , mobile phones 106 , personal computers 107 or any other electronic devices capable of receiving streaming content over the network 102 . The content server 103 is configured to send data via the network 102 to the client devices 105, 106, 107 which in turn are configured to receive the data so that the client devices 105, 106, 107 can consume the data.

[0036] Sending, receiving and any data encoding / decoding is performed in a conventional manner, and all involved devices implement appropriate known n...

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PUM

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Abstract

A method of determining loss of IP packets that are transported over a network (102), where each IP packet comprises a number of data packets. The method comprises: i) extracting (501) a first data packet from a first IP packet (41), ii) extracting (502) a second data packet from a second IP packet, iii) retrieving (503, 504) a first sequence number from a first data packet and a second sequence number from a second data packet, where each of the sequence numbers is indicative of a sequence of data packets and has a value belonging to a set of a number of unique values, iv) calculating (505) a difference (delta cc ) between the sequence numbers, and v) determining (506) a number (k) of lost IP packets, as a function of the difference (delta cc ) between the sequence numbers. Related computer readable medium and customer equipment are also described.

Description

technical field [0001] The present invention relates to determining the loss of IP packets transmitted over a network. Background technique [0002] Currently, Internet Protocol Television (IPTV) is a digital television system delivered over the Internet. IPTV consists of "normal" live TV and stored video, often called video-on-demand. IPTV provides video and associated audio and subtitles, which are encoded by a video encoder and audio encoder respectively and then sent using a Transport Stream (TS) to the user. A common transport stream for video and associated audio is MPEG2-TS, MPEG2-TS is in MPEG-2 Part 1, System (formally known as ISO / IEC Standard 13818-1 or ITU-T Rec.H.222.0) The transport stream specified in . [0003] In more detail, MPEG2-TS specifies a container format that encapsulates packetized elementary streams, with error correction and stream synchronization features for maintaining transport integrity in the event of transport stream usage signal degrad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L69/40
CPCH04N21/42607H04N21/643H04N21/64322H04N21/6473H04L69/40H04L69/22H04L65/764H04N21/44209H04W24/00
Inventor 约根·古斯塔夫森加纳·海奇拉托马斯·伦德伯格
Owner TELEFON AB LM ERICSSON (PUBL)
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