PCS Network
D-AMPS
Time Division for multiple calls, under 2G
The three parts of ME
What are IMEI(Serial Number), IMSI(SIM Card), and MSISDN(Phone Number)?
List the three digital cellular technology used for mobile communication
What are CDMA, FDMA, TDMA?
3 types of satellites
What are LEO, MEO, and GEO
What are the four primary software components found within the Mobile Switching Center (MSC) of a GSM network?
HLR, VLR, EIR, AuC
Speeds of up to 64 Kbps, Text and Multimedia, GSM released
What is 2G ?
BTS and what it does
Base Transceiver Station, Cell Tower that connects the ME to the BSC
Explain TDMA
TDMA is Time division multiple access, meaning that each user is assigned a time to access their frequency
Explain GEO Satellites
22,300 miles away from earth, two different types, geosynchronous, geostationary, weather and tv
Identify at least three other differences between GSM and CDMA networks.
GSM can transmit voice and other data at the same time, CDMA can only do one or the other at the same time. CDMA has built in encryption vs GSM does not
CDMA does packet switching while vs GSM does circuit switch
Speeds of up to 2.4 Kbps, Poor Voice Quality, Large Phones
What is 1G?
Authenticates and verifies the SIM Card identity after data transmits to the MSC.
AuC
Authentication Center
Explain FDMA
Frequency division multiple access, where the frequency is divided into sections with guard bands for clarity to each user
Explain MEO
8,000 Miles, High Speed Phones, 10 of them
How did the Subscriber Identity Module (SIM) differ in CDMA network devices compared to GSM networks?
The SIM plays a larger role in GSM networks that it does in a CDMA network, CDMA devices have the SIM built into the device
Speeds of up to 144 Kbps to 2 Mbps, high speed web browsing, web based applications such as videos, 3D Gaming
GMSC
Gateway Mobile Switching Center, Translates PSTN into the network
Soft Capacity of CDMA?
What is 61-64 Channels?
Explain LEO
500-1000 miles, 20 or more, .05 seconds
Applications of Satellite Communication
Radio broadcasting and voice communications TV broadcasting such as Direct To Home (DTH) Internet applications such as providing Internet connection for data transfer, GPS applications, applications, Internet surfing, etc. Military applications and navigations Remote sensing applications Weather condition monitoring & Forecasting
Downsides to 3G Technology
What are high infrastructure costs like licensing and mobile towers, trained professionals required for set up, expensive
Give all parts of the GSM Network
ME, BTS, BSC, MSC, HLR, VLR, AuC, EIR, GMSC
Explain CDMA
Code division multiple access, the ability to use the entirety of the bandwidth and frequency to send information as long as the channels are separated by code to access said frequency
A VSAT has a dish antenna with diameters between 75 cm to 1 m, which is very small in comparison with 10 m diameter of a standard GEO antenna. It accesses satellites in geosynchronous orbits or geostationary orbits. Data rates in VSATs ranges from 4 Kbps to 16 Mbps
The technology is commonly used in ultra-high- frequency (UHF) cellular cellular telephone systems, systems, bands ranging between the ___MHz and __-GHz
800, 1.9