Ericsson
Coder World Labs Interview Questions and Answers
Q1. How to improve DL throughout in good RF condition
To improve DL throughput in good RF condition, optimize antenna tilt, increase sector capacity, and reduce interference.
Optimize antenna tilt to improve signal strength and reduce interference
Increase sector capacity by adding more carriers or using advanced modulation techniques
Reduce interference by identifying and mitigating sources of interference
Ensure proper network planning and optimization to maximize DL throughput
Use advanced technologies like MIMO and beamforming to...read more
Q2. Check relation with inter & intra cell term point & anchor baseline
The relation between inter and intra cell term point and anchor baseline is important in RF optimization.
Inter cell term point refers to the point where the signal from one cell ends and the signal from another cell begins.
Intra cell term point refers to the point within a cell where the signal quality starts to degrade.
Anchor baseline is a reference point used to measure the performance of a network.
The relation between these terms helps in optimizing the RF network by ident...read more
Q3. How to improve BLER
To improve BLER, optimize the radio network by adjusting parameters and improving coverage.
Optimize radio network parameters such as power control, handover parameters, and modulation schemes
Improve coverage by adding more base stations or adjusting antenna tilt and orientation
Reduce interference by identifying and mitigating sources of interference
Perform regular network audits and drive tests to identify and address issues
Upgrade hardware and software to support newer techn...read more
Q4. How to solve handover & drop call
Handover and drop call issues can be solved by optimizing network parameters, improving coverage and capacity, and troubleshooting hardware and software problems.
Optimize handover parameters such as handover margin, time-to-trigger, and hysteresis
Improve coverage by adding more base stations or adjusting antenna tilt and azimuth
Increase capacity by adding more carriers or sectors
Troubleshoot hardware issues like faulty cables or connectors
Troubleshoot software issues like inc...read more
Q5. How to improve VDR
VDR can be improved by optimizing network parameters and reducing interference.
Optimize antenna tilt and azimuth angles
Adjust transmit power levels
Reduce interference from neighboring cells
Implement advanced interference cancellation techniques
Use frequency hopping to avoid interference
Deploy more base stations to improve coverage
Upgrade network hardware and software
Perform regular network audits and optimizations
Q6. RACH PROCEDURE
RACH procedure is used for initial access to the network by a UE.
RACH stands for Random Access Channel.
UE sends a RACH preamble to the network to request access.
The network responds with a RACH response message.
RACH procedure is used for both uplink and downlink transmission.
Optimizing RACH parameters can improve network performance.
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