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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.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoA: It identify direction of data flow. Like uploading meaning sending data out or downloading meaning receiving data to.
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What is duplex spacing?
Duplex distance/spacing is the distance between the uplink and downlink frequencies
What type of utp cable is used to connect a host to a router for programming purposes?
There are several different cables that you can use for this process. They include a cross over cable or an uplink.
True or False Broadband cable is a symmetrical technology?
False. You probably have figured it out already, but video signal (dubbed CATV or Cable TV) was previously the only thing traveling through the cable coax you use today to transport IP data and video data. As a result, the downlink is going to be much higher than the uplink due to the bandwidth of the signals traveling through the coax. With that in mind, Cable Broadband remains asymmetrical.
In GSM which frequency uplink or downlink is greater?
The main reason of selecting a lower frequency for up-link channel in GSM is because of free space path loss. The more is the frequency the more is the loss. As mobile phones, being a battery driven device, have limitation in terms of power we should always look for lower path loss. Whereas BTS antennas can transmit the signal (in down-link channel) with a comparatively high power, which will compensate the path loss. And that is why it is chosen to have lower frequency for up-link and higher frequency for down-link in GSM standards. The same theory applies in almost all type of radio communication. NOTE: Frequency and power are independent of each other. For example you can control the transmission power of BTS antenna, which still transmits in the same frequency.
What is the NIH crisp database?
The NIH crisp database is where the national institute of health compares different products and rates them depending on certain ingredients. This is helpful to us.
What is 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.
Schematic diagram of uplink and downlink?
uplink frequency-1710-1785MHz downlink frequency-1805-1880
What is the Uplink and downlink frequency for GSM900?
Uplink --> 890 MHz - 915 MHz Downlink --> 935 MHz - 960 MHz
What is an uplink an downlink in mobile coommunication?
Uplink is from MS to BS Downlink is from BS to MS P.S: BS=Base Station, MS=Mobile Station e.g cell phone
What is uplink frequency?
Uplink frequency is a frequency that goes from the ground to the satellite. Downlink frequency goes from the satellite to the ground.
What is the radio frequency numbers for the ISS station?
Worldwide downlink for voice - 145.80Worldwide packet uplink/downlink - 145.825Region 1 voice uplink - 145.20Region 2 and 3 voice uplink - 144.49Worldwide uplink for cross band voice repeater - 437.80Worldwide SSTV downlink - 145.800For more information, visit the NASA ISS Amateur Radio page at http://spaceflight.nasa.gov/station/reference/radio/
Why must a satellite have distinct uplink and downlink frequencies?
To avoid interference
How satellite communication is different from communication relay?
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.
Why downlink is greter than uplink?
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.
What is gsm uplink?
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
What is duplex spacing?
Duplex distance/spacing is the distance between the uplink and downlink frequencies
Why uplink frequency is greater than downlink frequency can you provide me these details with technical data?
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