Cellular Network Technologies

Question 1

Cellular networks

Answer 1

• mobile devices
• cell phones
• separate land into “cells”
• antenna covrgaes a cell with certain frequencies

Began wirh:

• 2G networks
• GSM-global system of mobile communocations
• CDMA-code division multiple access
• poor data support on 2G
• originally used circuit-switchimg
• minot upgrades for some packet switchinfg

Question 2

3G technology

Answer 2

• 3rd generation
• introduced in 1998
• upgraded data connectivity over 2G
• incremental 3G updates improved speed
• usuallu several megabits per second
• bandwidth improvement allowed new functionality
• GPS
• mobile television
• video on demand
• video conferencing

Question 3

4G and LTE

Answer 3

• Long Term Evolution (LTE)
• a “4G” technology
• converged standard (GSM & CDMA providers)
• based on GSM
• EDGE (enhacnced Data Rates for GSM Evolution)
• standard supports download rates of 150 Mbit.s
• LTE Advanced (LTE-A)
• standard supports download rates of 300 Mbit/s

Question 4

Moving to 5G

Answer 4

• update to 4G - rollout in late 2018 & 2019
• worldwide launces in 2020
• significant performance improvemtns
• at higher frequencies
• may not be as significant at lower frequencies
• technolofy updates
• additional features
• imporved data transmission methods