EOQ - Chp. 4 RAN (User Plane)

Question 1

What is a Radio Access Network (RAN)?

Answer 1

Connects user devices, such as smartphones and tables to the core network.

Question 2

What is the main difference between a mobile network and WIFI

Question 3

Give the functionalities of the control plane

Question 4

Give the functionalities of the user plane

Question 5

Explain the connection setup (similar to the phone call q.)

Question 6

What is the Radio Resource Control (RRC)

Answer 6

1. Controls the behaviour of the mobile terminal and mobile network.

Question 7

Explain what is Quality of Service (QoS)

Question 8

Name the typical KPIs in QoS

Question 9

What is a PDU session

Question 11

What is HARQ?

Question 12

What is Radio Resource Managmeent (RRM)

Answer 12

1. Has following tasks -> scheduling, interference management.

Question 13

In 5G, the subcarrier spacing is not fixed. Why is this?

Answer 13

Based on the bandwidth and size of the cell.

Question 14

What is massive MIMO?

Question 15

Name and explain briefly the difference reference signals

Question 16

What are main differences between mobile networks and WLAN?

Answer 16

1. Mobile networks are designed for mobility, while WILAN is not.
2. WiFi operates in the unlicensed spectrums, whereas, mobile networks use licensed spectrums.