By What is uplink and downlink frequency in mobile communication?
GSM-900 uses 890 – 915 MHz to send information from the Mobile Station to the Base Transceiver Station (BTS) (This is the “uplink”) and 935 – 960 MHz for the other direction (downlink), providing 124 RF channels spaced at 200 kHz. Duplex spacing of 45 MHz is used.
What is uplink and downlink in telecommunication?
Uplink and downlink, also called upload and download, refers to the two-way communication between a cell tower and your phone. Downlink definition – signal coming from a cell tower to your cellular device. Uplink definition – signal leaving your cellular device and going back to a cell tower.
What is meant by uplink and downlink frequency?
The frequency with which, the signal is sent into the space is called as Uplink frequency. Similarly, the frequency with which, the signal is sent by the transponder is called as Downlink frequency. Uplink frequency is the frequency at which, the first earth station is communicating with satellite.
What is uplink and downlink in 4g?
The actual implementation of the technology will be different between the downlink (i.e. from base station to mobile) and the uplink (i.e. mobile to the base station) as a result of the different requirements between the two directions and the equipment at either end.
Why uplink frequency is more than downlink?
In satellite communication, the uplink frequency is higher than the downlink frequency because the attenuation level increase with an increase in frequency. The power at the ground station (Base Station) is more than compared to the power available at the satellite.
What is difference between uplink and downlink?
In satellite telecommunication, a downlink is the link from a satellite down to one or more ground stations or receivers, and an uplink is the link from a ground station up to a satellite.
What is the uplink frequency of satellite?
satellite communications …to operate in the so-called C band, which employs uplink/downlink frequencies of 6/4 gigahertz, or in the Ku band, in which uplink/downlink frequencies are in the range of 14/11 gigahertz.
Why is high frequency used in satellite communication?
The high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications satellites is to relay the signal around the curve of the Earth allowing communication between widely separated geographical points.
Which frequency is more uplink or downlink?
Which frequency is high uplink or downlink?
It say basically the power at ground stations is more as compared to power available at satellites.So generally frequency for uplink is kept higher than the downlink. There is greater attenuation due to rain when the signal frequency is high.so downlink is also kept at lower frequency.
What’s the difference between downlink and uplink frequency?
The frequency used for all the transmissions from Base Station to the Mobile Subscriber Unit (MS) is known as downlink frequency. The direction from BS to MSs is called downlink direction.
How is FDD used for uplink and downlink?
FDD allows uplink and downlink transmission at the same time, but over different frequency bands. The bands are typically separated by a large margin to avoid leakage. FDD creates a channel that is always available and thus does not incur any delay.
Which is the highest rate of uplink transmission?
Together with rate control, this implies that the highest data rate is achieved for a given transmit power or, in other words, for a given interference to other cells, the highest link utilization is achieved.
Which is the downlink frequency in a satellite network?
As mentioned above in C band satellite network, 3700 to 4200 MHz is used as downlink frequency band. In GSM, frequency range from 935 MHz to 960 MHz is used as downlink frequency range.