2.7 Cellular Connections Flashcards
What does ‘G’ stand for in cellular technology (e.g., 4G, 5G)?
‘G’ stands for ‘Generation.’
What was the primary function of 1G networks?
Analog voice communication.
What was the maximum speed of 1G networks?
~2 Kbps.
What key feature was introduced in 2G networks?
Digital signals and SMS (text messaging).
What were the main data transmission technologies in 2G?
GPRS (14.4-64 Kbps) and EDGE (~1 Mbps).
What was the key improvement in 3G networks?
Faster mobile internet, video calls, and mobile browsing.
What technology in 3G provided speeds up to 14.4 Mbps?
HSPA (High-Speed Packet Access).
What is the speed range of HSPA+ in 3G networks?
Up to 50 Mbps.
What major advancement did 4G LTE bring?
High-speed data up to 1 Gbps, enabling HD streaming and online gaming.
What does LTE stand for?
Long-Term Evolution.
What is the speed of standard LTE?
Up to 100 Mbps.
What is the speed of LTE-A (LTE Advanced)?
2-3 times faster than standard LTE.
What is the key advantage of 5G over 4G?
Ultrafast speeds (up to 10 Gbps) and lower latency.
What are the three frequency bands of 5G?
Low-band (600-850 MHz), Mid-band (2-6 GHz), High-band (25-39 GHz, mmWave).
What is the speed range of 5G low-band?
30-250 Mbps.
What is the speed range of 5G mid-band?
100-900 Mbps.
What is the speed range of 5G high-band (mmWave)?
1-10 Gbps.
Why is mmWave (high-band) 5G not widely used?
It has a short range and requires many small cell towers.
What applications benefit the most from 5G?
Smart cities, self-driving cars, IoT, and high-speed data transmission.
What cellular technology still dominates globally?
4G LTE.
What is a key limitation of 5G high-band (mmWave)?
It has a very short range and struggles with obstacles like buildings.
Which 5G frequency band offers the best balance between speed and coverage?
Mid-band (2-6 GHz).
Which mobile network generation was the first to support video calls?
3G.
Which generation introduced digital signals and improved call quality?
2G.
Which cellular network generation is rapidly expanding but not yet fully adopted?
5G.
