Why it is called uplink and downlink?

Uplink and downlink are frequencies Communication from earth station to satellite in uplink and communication from satellite to earth station is downlink Always uplink freq.>downlink freq. ...

uplink frequency-1710-1785MHz downlink frequency-1805-1880

Uplink --> 890 MHz - 915 MHz Downlink --> 935 MHz - 960 MHz

Uplink is from MS to BS Downlink is from BS to MS P.S: BS=Base Station, MS=Mobile Station e.g cell phone ...

Uplink frequency is a frequency that goes from the ground to the satellite. Downlink frequency goes from the satellite to the ground. ...

The downlink is greater than the uplink on most internet connects due to overall demand for bandwidth. Downloading takes up a majority of internet usage and connections are optimized for it. ...

Hi, For every GSM band there are Uplink and downlink frequencies. Example: GSM 900 TX: 880 MHz to 915 MHz is an uplink frequency range GSM 900 RX: 925 MHz to 960 MHz is a downlink frequency range Aloha, Maverick ...

Worldwide downlink for voice - 145.80 Worldwide packet uplink/downlink - 145.825 Region 1 voice uplink - 145.20 Region 2 and 3 voice uplink - 144.49 Worldwide uplink for cross band voice repeater - 437.80 Worldwide SSTV downlink - 145.800 For more information, visit the NASA ISS Amateur Radio page at http://spaceflight.nasa.gov/station/reference/radio/ ...

Before describing the solution of above query let firstly define uplink and downlink frequencies Uplink frequency: In satellite telecommunications terminology, uplink means the signal sent from Earth to the satellite. Downlink frequency: In satellite telecommunications terminology downlink means the signal from the satellite to earth. And now what about the frequencies Why kept different?? The main reason for keeping these frequencies apart is to avoid interference between the upcoming and outgoing signals since they received and sent from a single body that is our satellite. ...

For CDMA in India, the frequencies are: 824 - 844 MHz for the uplink (handset to base station) 869 - 889 MHz for the downlink (base station to handset) 20 MHz band for uplink & downlink. carrier freq. is 1.25MHz ...

downlink becouse frequncy / power low compare to uplink

These are frequencies used for satellite communications. Usually in the Gigahertz bands. Uplink is on a differenct channel to downlink, to avoid interferece. The Uplink, is the signal sent to the satellite, via a dish antenna, which focuses the signal in the direction of the satellite. On board the satellite, this signal is changed and re-transmitted, on a different frequency (Downlink), and beamed back to earth. This way huge distances can be covered on earth, despite the curvature and with minimal power. ...

In the CDMA technology It is either between your Handset and the Mobile Station. The dedicated frequency are allocated for u sending your data to the mobile station (Uplink freuency) and a dedicated frequency is reserved for you to receive your data from the mobile station (Downlink frequency) ...

Uplink freq is greater than the downlink frequency in satellite communication because the power requirement is less with higher freq than the low.And it is easier to fullfil higher power requirement at the earth station than at satellite. ...

Most two-way radios are 'duplex' transceivers. This means they transmit (uplink)on one frequency and receive (downlink) on another- spaced at least 13 MHz apart. This stops interference between the radio's components. ...

It varies - according to which system is in use. The related link to Wikipedia lists the uplink & downlink frequencies. ...

For communication satellites the range is much higher than that of communication relay. Communication Satellite can cover up to several thousands of kilometers. For communication relay, the uplink and the downlink frequency is the same. But for communication satellites the uplink and the downlink frequencies are different in order to avoid interference. ...

So that they can both be used at the same time (i.e. full duplex) without interference. ...

It is because a mobile is operated on a battery with low power and therefore it sends signals on low(uplink) frequencies whereas a base station is driven by high power and can easily send signals on high(downlink) frequencies. This can be verified by Friis equation which says Transmitted power and Transmitted frequency are directly proportional. ...

Since path loss is directly propotional to frequency so the Mobile station transmits at lower frequencies in the uplink channel in order to conserve battery power. BTS downlink signal can however afford to experience path loss and still provide good enough transmission to the receiver(mobile station). ...

In digital subscriber line (DSL) technology there are two important terms called uplink and downlink. Up link - Called the capacity of upload in the internet (Data) connection. Basically called upload speed. downlink - Called the capacity of down link in the internet (Data) connection. Basically called download speed. For more information, see the link. Telecommunication Stuff This blog provides many articles related to telecommunication, data communication and engineering. And all articles provide well informative knowledge to any kind of person ...

Douglas J. Mudgway has written: 'Uplink-downlink' -- subject(s): Deep space network, History ...

A: It identify direction of data flow. Like uploading meaning sending data out or downloading meaning receiving data to. ...

due to path loss : higher is the frequency higher is the patrh loss

This is actually the EGSM uplink band. It carries signals "up" from the mobile station to the base station. EGSM downlink is from 925MHz to 960MHz and carries signals from the base station "down" to the mobile station. ...