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- Round-trip_delay_time abstract "In telecommunications, the round-trip delay time (RTD) or round-trip time (RTT) is the length of time it takes for a signal to be sent plus the length of time it takes for an acknowledgment of that signal to be received. This time delay therefore consists of the propagation times between the two points of a signal. In the context of computer networks, the signal is generally a data packet, and the RTT is also known as the ping time. An internet user can determine the RTT by using the ping command.In space technology, the round-trip delay time or round trip light time is the time light (and hence any signal) takes to go to a space probe and return.Network links with both a high bandwidth and a high RTT can have a very large amount of data (the bandwidth-delay product) "in flight" at any given time. Such "long fat pipes" require a special protocol design. One example is the TCP window scale option.The RTT was originally estimated in TCP by: RTT = (α · Old_RTT) + ((1 − α) · New_Round_Trip_Sample) Where α is constant weighting factor(0 ≤ α < 1). Choosing a value α close to 1 makes the weighted average immune to changes that last a short time (e.g., a single segment that encounters long delay). Choosing a value for α close to 0 makes the weighted average respond to changes in delay very quickly.This was improved by the Jacobson/Karels algorithm, which takes standard deviation into account as well.Once a new RTT is calculated, it is entered into the equation above to obtain an average RTT for that connection, and the procedure continues for every new calculation.Examples:200 ms RTT for a connection using UDT (UDP-based Data Transfer Protocol) equates to a 12,000 mile round trip path length.↑ ↑".
- Round-trip_delay_time wikiPageID "41672".
- Round-trip_delay_time wikiPageRevisionID "577667526".
- Round-trip_delay_time hasPhotoCollection Round-trip_delay_time.
- Round-trip_delay_time subject Category:Light.
- Round-trip_delay_time subject Category:Telecommunication_theory.
- Round-trip_delay_time comment "In telecommunications, the round-trip delay time (RTD) or round-trip time (RTT) is the length of time it takes for a signal to be sent plus the length of time it takes for an acknowledgment of that signal to be received. This time delay therefore consists of the propagation times between the two points of a signal. In the context of computer networks, the signal is generally a data packet, and the RTT is also known as the ping time.".
- Round-trip_delay_time label "Paketumlaufzeit".
- Round-trip_delay_time label "Round Trip Time".
- Round-trip_delay_time label "Round Trip Time".
- Round-trip_delay_time label "Round-trip delay time".
- Round-trip_delay_time label "Round-trip delay time".
- Round-trip_delay_time label "Round-trip delay time".
- Round-trip_delay_time label "ラウンドトリップタイム".
- Round-trip_delay_time label "來回通訊延遲".
- Round-trip_delay_time sameAs Obousměrné_zpoždění.
- Round-trip_delay_time sameAs Paketumlaufzeit.
- Round-trip_delay_time sameAs Χρόνος_μετάδοσης_μετ'_επιστροφής.
- Round-trip_delay_time sameAs Round-trip_delay_time.
- Round-trip_delay_time sameAs Round-trip_delay_time.
- Round-trip_delay_time sameAs Round_Trip_Time.
- Round-trip_delay_time sameAs ラウンドトリップタイム.
- Round-trip_delay_time sameAs Round_Trip_Time.
- Round-trip_delay_time sameAs m.0bfzl.
- Round-trip_delay_time sameAs Q1346398.
- Round-trip_delay_time sameAs Q1346398.
- Round-trip_delay_time wasDerivedFrom Round-trip_delay_time?oldid=577667526.
- Round-trip_delay_time isPrimaryTopicOf Round-trip_delay_time.