NR Switch N Radio Services RF Engineer Interview Questions and Answers

Q1. 1. short intro.. about me. 2.intrested job or not. 3. detail my current job. 4. asked time sedule for techenical round..
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Q1. 1. introduction 2. asked techenical questions about 30 to 35 minut.
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Q1. 1. last salary discussion and interview process finally done.
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Q1. They will provide training
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Q2. They will provide training , we have to pay
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Q3. They train, we have to pay
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It's all about ground job. No fixed location. You have to travel across the country border. But, after getting 2 years of experience your demand will be high in telecom circle.

Q1. Kpi,lte events,cqi, bandwidth
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Q2. PCI range,all DT parameters good knowledge
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Q1. What are the parameters in LTE?
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Parameters in LTE include bandwidth, frequency, modulation scheme, coding scheme, and transmission power.
• Bandwidth: Determines the amount of frequency spectrum allocated for LTE transmission.

• Frequency: Specifies the carrier frequency used for LTE communication.

• Modulation scheme: Defines how data is encoded onto the carrier signal.

• Coding scheme: Determines the error correction capabilities of the LTE system.

• Transmission...read more
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Q2. What is VoLTE and explain shortly?
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VoLTE stands for Voice over LTE, which allows voice calls to be made over a 4G LTE network.
• VoLTE uses IP packets to transmit voice calls over LTE networks

• Provides higher quality voice calls compared to traditional 2G/3G networks

• Enables faster call setup times and improved battery life on smartphones

• Supports features like HD voice, video calling, and simultaneous voice and data usage

• Examples: Verizon's HD Voice, AT&T's
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Q3. What are the types of Handover
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Types of handover include hard handover, soft handover, and softer handover.
• Hard handover involves breaking the connection with the current cell before establishing a connection with the new cell.

• Soft handover allows the mobile device to communicate with multiple cells simultaneously before switching to the new cell.

• Softer handover is a variation of soft handover where the mobile device communicates with multiple secto...read more
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Q4. If hand over not defined in between two cells what will happen?
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Call will be dropped when moving from one cell to another
• Handover is essential for seamless transition between cells

• Without handover, call quality may degrade or call may be dropped

• Handover ensures continuity of service as user moves between cells
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Q1. Relation between CQI & modulation, LTE architecture, Events
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CQI is related to modulation in LTE architecture and events trigger CQI reporting.
• CQI is a measure of channel quality and determines the modulation scheme used for data transmission.

• Higher CQI values indicate better channel quality and allow for higher order modulation schemes.

• LTE architecture includes multiple layers such as the physical layer, MAC layer, and RLC layer.

• Events such as handovers, cell reselections, and ...read more
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Q1. What are your salary expectations?
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Q1. RRc faliure how will happen
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RRc failure can occur due to various reasons such as hardware failure, software bugs, network congestion, etc.
• RRc failure can lead to call drops and poor call quality

• Hardware failure can occur due to faulty equipment or improper installation

• Software bugs can cause RRc failure due to coding errors or compatibility issues

• Network congestion can lead to RRc failure due to overload on the network

• RRc failure can be resolved ...read more
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Q2. Pci collision & pci conclusion
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