ETCP 5G RAN Architecture and Deployment

Question 1

In Ericsson's 5G NR RAN, what does 'gNB' stand for?

Accepted Answer

Next-Generation Node B

Answer

Generalized Node B

Answer

Gateway Node Base

Answer

Grid Node Broadband

Question 2

What is the functional split in Ericsson's CU/DU architecture for 5G?

Accepted Answer

CU handles higher-layer protocols (PDCP, RRC); DU handles lower-layer protocols (RLC, MAC, PHY)

Answer

CU manages physical antenna beamforming; DU handles IP routing

Answer

CU provides power to the RU; DU manages transport backhaul

Answer

CU is the outdoor unit; DU is the indoor baseband unit

Question 3

Which Ericsson 5G product integrates the baseband and radio into a single outdoor unit?

Accepted Answer

Ericsson AIR (Active Intelligent Radio) series

Answer

Ericsson Radio Dot

Answer

Ericsson Integrated Access and Backhaul (IAB) node

Answer

Ericsson MINI-LINK PT

Question 4

What is Massive MIMO in the context of Ericsson's 5G radio deployments?

Accepted Answer

A system with a large number of antenna elements enabling multi-user spatial multiplexing and beamforming

Answer

A technique using a single large antenna element for wide coverage

Answer

A modulation scheme for millimeter-wave frequencies

Answer

A frequency aggregation method for carrier aggregation

Question 5

In Ericsson's 5G RAN, what is the purpose of the F1 interface?

Accepted Answer

Connects the CU to the DU within a disaggregated gNB

Answer

Connects the gNB to the 5GC AMF

Answer

Links two gNBs for X2-equivalent communication

Answer

Provides timing reference to the RU

Question 6

What does 'beamforming' enable in Ericsson's 5G Massive MIMO radios?

Accepted Answer

Directing radio energy toward specific users to improve signal quality and reduce interference

Answer

Automatic frequency hopping across bands

Answer

Compressing baseband data before transmission

Answer

Encrypting over-the-air radio frames