glossary:bit_time
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glossary:bit_time [2009/01/16 17:50] – eechris | glossary:bit_time [2011/01/14 12:46] (current) – external edit 127.0.0.1 | ||
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+ | ====== Bit time ====== | ||
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+ | Bit time is a quantity that can be useful for simplifying the calculation of file download times and [[network latency]]. Bit time for a given [[link]] is simply the time taken to transmit one bit. Some bit times for commonly encountered link capacities are given in the table below: | ||
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+ | ^ Link technology ^ Bandwidth ^ Bit Time ^ | ||
+ | | telephone modem | 56 kbit/s | 17.86 μs = 17,857 ns | | ||
+ | | 2 Mbit [[ADSL]] broadband | 2 Mbit/s | 0.5 μs = 500 ns| | ||
+ | | 5 Mbit [[HFC]] broadband | 5 Mbit/s | 0.2 μs = 200 ns | | ||
+ | | [[WiFi]] | ||
+ | | [[Ethernet]] | 100 Mbit/s | 0.01 μs = 10 ns | | ||
+ | | Gigabit [[Ethernet]] | 1 Gbit/s | 0.001 μs = 1 ns | | ||
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+ | Once you have bit times, you can perform all calculations in terms of the packet size in bits and convert to time only if required. | ||
+ | ---- | ||
+ | [[Glossary]] : [[glossary# | ||
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