Packet loss rate

Packet loss rate

Die Paketverlustrate, engl. Packet loss rate (PLR), ist in der Nachrichtentechnik ein Maß für die Übertragungsqualität einer elektronischen Datenverbindung. Die Paketverlustrate, die meist in Prozent angegeben ist, gibt an wieviele Pakete eines Datenstroms zwischen einem Sender und Empfängers während der Übertragung verloren gegangen sind, sprich nicht empfangen werden konnten. Sie berechnet sich aus dem Verhältnis der Anzahl verloren gegangener zur Anzahl gesendeter Daten-Pakete, wie z. B. IP-Pakete.

PLR=\frac{P_{verloren}}{P_{gesendet}} mit P = Anzahl der Pakete
Für die prozentuale Angabe muss nur der Quotient mit 100 multipliziert werden:
PLR=\frac{P_{verloren}}{P_{gesendet}}\cdot 100

Ursache für den Verlust können beschädigte Übertragungsleitungen, oder z. B. ein Störer auf derselben Sendefrequenz sein.

Um eine gute Verbindung zu haben sollte dieser Fehlerwert so klein wie möglich, am besten 0 sein. Für IP-Telefonie gelten nach ITU G.114 Paketverlustraten bis zu 5 % noch als akzeptable Qualität.

siehe auch


Wikimedia Foundation.

Игры ⚽ Поможем написать реферат

Schlagen Sie auch in anderen Wörterbüchern nach:

  • Packet capture — is the act of capturing data packets crossing a computer network. Deep packet capture (DPC) is the act of capturing, at full network speed, complete network packets (header and payload) crossing a network with a high traffic rate. Once captured… …   Wikipedia

  • Lower bit rate codecs — Lower bit rate codecsLower bit rate codecs allow more users, but theyalso have more distortion. Beyond the initial increase in distortion, lower bit rate codecs also achieve their lower bit rates by using more complexalgorithms that make certain… …   Wikipedia

  • Packet (information technology) — In information technology, a packet is a formatted unit of data carried by a packet mode computer network. Computer communications links that do not support packets, such as traditional point to point telecommunications links, simply transmit… …   Wikipedia

  • Internet Low Bit Rate Codec — (iLBC) is a royalty free [ [http://ilbcfreeware.org/documentation/gips iLBClicense.pdf Global IP Solutions iLBC Freeware Public License] ( [http://google.com/search?q=cache:ilbcfreeware.org/documentation/gips iLBClicense.pdf HTML] ) ] narrowband… …   Wikipedia

  • Network packet — In computer networking, a packet is a formatted unit of data carried by a packet mode computer network. Computer communications links that do not support packets, such as traditional point to point telecommunications links, simply transmit data… …   Wikipedia

  • Basic rate interface — (BRI, 2B+D, 2B1D) is an Integrated Services Digital Network (ISDN) configuration defined in the physical layer standard I.430 produced by the ITU. This configuration consists of two 64 kbit/s bearer channels (B channels) and one 16 kbit/s data… …   Wikipedia

  • Voice over IP — Digital voice redirects here. For the commercial service, see Comcast Digital Voice. Voice over Internet Protocol (Voice over IP, VoIP) is a family of technologies, methodologies, communication protocols, and transmission techniques for the… …   Wikipedia

  • Voice over Internet Protocol — (VoIP, IPAEng|vɔɪp) is a protocol optimized for the transmission of voice through the Internet or other packet switched networks. VoIP is often used abstractly to refer to the actual transmission of voice (rather than the protocol implementing… …   Wikipedia

  • Flexible Macroblock Ordering — H.264/MPEG 4 AVC is a new standard for digital video compression jointly developed by ITU T’s Video Coding Experts Group (VCEG) and ISO/IEC’s Moving Picture Experts Group (MPEG).Next to efficient coding algorithms, the H.264/AVC specifications… …   Wikipedia

  • Long-tail traffic — This article covers a range of tools from different disciplines that may be used in the important science of determining the probability of rare events. The terms long range dependent , self similar and heavy tailed are very close in meaning.… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”