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Ericsson ECP-383 - Ericsson Certified Associate - Radio Network Optimization

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Total 62 questions

What Is the purpose of the Location/Tracking Area update?

A.

It is used to locate the UEs in idle mode.

B.

It is used to internally locate UEs during on-going calls.

C.

It is used to locate the originating UE.

D.

It is used to locate the best IRAT cells.

According to IR.92, which two LTE RAN functions are required to support VoLTE? (Choose two.)

A.

Service Specific Inactivity Timer

B.

RLC in Unacknowledged Mode for RTP transmissions

C.

Inter-frequency handover

D.

Multiple Radio Bearers per User

Which two statements about the Radio Connection Supervision (RCS) algorithm in LTE are correct? (Choose two.)

A.

It selects the number of PRBs assigned to users for downlink and uplink.

B.

It collects radio problems and inactivity information with the purpose to release resources.

C.

It controls the modulation and coding scheme used in DL transmissions.

D.

It supervises the radio connection between E-UTRAN and a UE in connected mode.

A customer has Identified problems In an Indoor, medium loaded, urban area of a GSM/WCDMA collocated network. The problem seems to be in the uplink. The signal level received by the problematic site is high, and the downlink signal in the problematic area is acceptable.

Which two actions would you use to troubleshoot the issue? (Choose two.)

A.

Add a pico cell In the same RAT and frequency.

B.

Run a passive inter-modulation (PIM) analysis.

C.

Decrease base station transmission power.

D.

Investigate external interference.

You have collocated sectors In your 2G network on the GSM 900 and the DCS 1800 bands. Reviewing the network level traffic distribution, you noticed that the GSM 900 sectors have five times more traffic than the DCS 1800 sectors.

Which two actions would improve load balancing between these bands? (Choose two.)

A.

adding additional GSM 900 sectors

B.

changing the handover margin

C.

expanding the site's transmission link

D.

changing the idle mode cell reselection parameter

A customer is deploying VoLTE and complains about high voice drop rates and voice quality degradation at the cell edge in most LTE cells in the area. The network has a dense WCDMA coverage on the 700 MHz band and patchy LTE coverage on the 2100 MHz band.

Which two features would you activate to solve this problem? (Choose two.)

A.

DRX

B.

256 QAM DL

C.

TTI Bundling

D.

SRVCC Handover to UTRAN

Which statement is correct about power control on an HS-PDSCH channel?

A.

Available power for the EUL channel impacts the HS-PDSCH data capacity.

B.

Inner closed loop power control is used.

C.

Available power and radio conditions impact the HS-PDSCH data rate.

D.

Outer loop power control is used.

Which two statements are correct about voice quality in a VoLTE network? (Choose two.)

A.

Increasing jitter will improve voice quality.

B.

Increasing silent gaps in the received audio signal will improve voice quality.

C.

Decreasing jitter will Improve voice quality.

D.

Decreasing silent gaps in the received audio signal will improve voice quality.