1)What is the frequency range of forward link and reverse link in GSM?
Forward link= 890 to 915 MHz
Down link= 935 to 960 MHz
Down link= 935 to 960 MHz
2)What is the modulation data rate for GSM?
384 kbps(stationary 2Mbps)
3)What is the type of modulation used in GSM?
GMSK and PCM.
4)What is the number of traffic channels used in GSM?
Three traffic channels(TCHs)
1. TCH/F(full rate)
2. TCH/H(half rate)
3. TCH/8(one-eighth rate)
1. TCH/F(full rate)
2. TCH/H(half rate)
3. TCH/8(one-eighth rate)
5)What are the types of channels in GSM?
Two types of channels
1. Traffic channel
2.Control channel
1. Traffic channel
2.Control channel
6)What is the advantage of GSM?
GSM phones offer superior sound quality. Background sounds, disturbances, and static are vastly reduced and crossed-line conversations are also almost eliminated in gsm cellular phones . GSM phone sound quality is more like that of a fixed telephone. The main advantage of GSM mobiles are International Roaming ability, good sound quality, small cheaper handsets and ability to handle high volumes of users. Unlike analogue phones, your conversations using a gsm cell phone within the digital network are safe and secure.
7)What is the frequency range of cellular mobile communication?
7)What is the frequency range of cellular mobile communication?
800 to 900 MHz
8)What is known as roaming?
8)What is known as roaming?
Handoff between one pcs to another pcs. Roaming is a general term in wireless telecommunications that refers to the extending of connectivity service in a location that is different from the home location where the service was registered. The term "roaming" originates from the GSM (Global System for Mobile Communications Association) sphere.
9)What do you mean by handoff?
Switching over from base station to another.
Automatic link transfer.
Switching over from base station to another.
Automatic link transfer.
10)Which service provider uses CDMA technique?
Reliance and TATA Indicom
Reliance and TATA Indicom
11)Which service provider uses GSM technique?
Airtel, Aircel and vodofone.
Airtel, Aircel and vodofone.
12)Why cell site shape is hexagon?
Covers all areas with equal power.
Omni directional antenna will be used in this. It will cover full area.
Covers all areas with equal power.
Omni directional antenna will be used in this. It will cover full area.