RNO Engineer Interview Questions and Answers

CA, MIMO, TDD, FDD, and eNB are key concepts in wireless communication.

• Carrier Aggregation (CA) is a technique that combines multiple carriers to increase data rates.

• Multiple-Input Multiple-Output (MIMO) uses multiple antennas to improve signal quality and capacity.

• Time Division Duplex (TDD) and Frequency Division Duplex (FDD) are duplexing techniques for transmitting and receiving data simultaneously.

• eNB (evolved NodeB) is the base station in LTE networks responsible for rad...read more

To overcome SINR issue, one can use techniques like beamforming, interference mitigation, and increasing the number of antennas.

• Implement beamforming to focus the signal towards the intended receiver

• Use interference mitigation techniques like frequency hopping or power control

• Increase the number of antennas to improve signal strength and reduce interference

• Use advanced modulation techniques like MIMO to improve spectral efficiency

To resolve low throughput, identify the bottleneck and optimize the system accordingly.

• Check for network congestion or hardware limitations

• Optimize code and algorithms

• Increase resources such as RAM or CPU

• Implement load balancing

• Use caching to reduce database queries

• Upgrade to faster hardware or network

• Implement compression or data reduction techniques

VOLTE is Voice over LTE, a technology that allows voice calls over LTE network. CSFB is Circuit Switched Fall Back, a mechanism to switch to 2G/3G network for voice calls.

• VOLTE enables high-quality voice calls over LTE network

• CSFB allows seamless switching to 2G/3G network for voice calls

• VOLTE uses IP packets for voice transmission, providing better call quality and faster call setup

• CSFB is used when a device is on LTE network but needs to make or receive a voice call, it tem...read more

4G LTE is a high-speed wireless communication technology that allows for faster data transfer and improved network performance.

• 4G LTE stands for Fourth Generation Long-Term Evolution

• Provides faster download and upload speeds compared to 3G

• Enables high-quality video streaming and online gaming

• Supports advanced features like VoLTE (Voice over LTE) and carrier aggregation