Round Trip Time
Round Trip Time, or RTT, also known as “round-trip delay time” is the time it takes for a signal to be sent from a transmitter to a receiver plus the time it takes to verify that the signal has been received; therefore, Round Trip Time is the time it takes for a signal to be sent from one location to another and back again. RTT almost always relates to telecommunication, but may refer to the Internet, satellite communications, or radar systems.
How Round Trip Time Works
Round Trip Time is dependent on a number of factors, including the data transfer rate of the source, the nature of the transmission medium, the distance between the source and the destination, the number of nodes between the source and the destination, the amount of traffic or bandwidth on the network that is being used, the number of other requests being handled by the receiver or nodes along the transmission path, the processing capabilities of the source, receiver, and nodes, and the presence of interference.
Applications
Round Trip Time can refer to a wide variety of transmissions, such as copper-cable Internet transmissions, wireless Internet transmissions, satellite transmissions, and cell phone transmissions. In Internet transmissions, the RTT may refer to “ping time”, which is the amount of time data can be sent to a remote location and sent back, and may be identified by using the ping command. In satellite transmissions, the RTT can be calculated by using the Jacobson/Karels algorithm.
Advantages
Calculating a transmission’s RTT is advantageous because it allows users and operators to identify how long a transmission will take to complete and how fast a network can operate. RTT in both Internet and satellite transmissions is particularly important because it allows network providers to establish data speeds and allocate bandwidth to subscribers accordingly.
|
|
- Low Earth Orbit
Low Earth Orbit (LEO) refers to a satellite which orbits the earth at altitudes between (very roughly) 200 miles and 930 miles. Low Earth Orbit satellites must travel very quickly to resist the pull of gravity — approximately 17,000 miles per hour. Because of this, Lowe Earth Orbit satellies can orbit the planet in as [...]...
- Satellite Internet
Satellite Internet is an alternative to dialup, ISDN, DSL, or cable Internet. Satellite Internet is extremely interesting to customers who cannot get DSL or cable Internet. Satellite Internet offers broadband speeds, but suffers from high latency due to long round-trip times made necessary by the distance to geostationary satellites. The latency issues related to satellite [...]...
- Medium Earth Orbit
Medium Earth Orbit (MEO) refers to a satellite which orbits the earth at an altitude below 22,300 miles (geostationary orbit) and above the altitude of Low Earth Orbit (LEO) satellites. Medium Earth Orbit represents a series of tradeoffs between geostationary orbit (GEO) and Low Earth Orbit (LEO). Medium Earth Orbit enables a satellite provider to [...]...
- IDU (In-Door Unit)
An IDU, or In-Door Unit, is a telecommunication device that is used in satellite television and Internet service to receive and decode satellite transmissions. An IDU is a box that connects to the user’s television and/or router and contains a built-in satellite receiver that may also be connected to a satellite dish on the roof [...]...
- The Best Satellite Dish
There is no “one” best satellite dish. The best satellite dish for you depends upon several factors. Satellite Dish Size The larger the satellite dish, the better it will receive signals. Therefore, the largest satellite dish available is always the best satellite dish — except that few of us want a nine foot satellite dish [...]...