Mobile-Computing
December 6, 2023Question 6975 – Computer-Graphics
December 6, 2023Data-Communication
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Question 10
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The frequency band allocated for the downlink in GSM is :
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960 – 985 MHz
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935 – 960 MHz
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920 – 945 MHz
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930 – 955 MHz
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Question 10 Explanation:
There are 2 popular GSM methods.
1. GSM-900
2. GSM-1800
GSM-900 uses 890 – 915 MHz to send information from the Mobile Station to the Base
Transceiver Station (uplink) and 935 – 960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used.
1. GSM-900
2. GSM-1800
GSM-900 uses 890 – 915 MHz to send information from the Mobile Station to the Base
Transceiver Station (uplink) and 935 – 960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used.
Correct Answer: B
Question 10 Explanation:
There are 2 popular GSM methods.
1. GSM-900
2. GSM-1800
GSM-900 uses 890 – 915 MHz to send information from the Mobile Station to the Base
Transceiver Station (uplink) and 935 – 960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used.
1. GSM-900
2. GSM-1800
GSM-900 uses 890 – 915 MHz to send information from the Mobile Station to the Base
Transceiver Station (uplink) and 935 – 960 MHz for the other direction (downlink), providing 124 RF channels (channel numbers 1 to 124) spaced at 200 kHz. Duplex spacing of 45 MHz is used.