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Ericsson RAN Engineer Interview Questions and Answers
Ericsson RAN Engineer Interview Experiences
1 interview found
Anonymous
I applied via Walk-in and was interviewed before Oct 2019. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. RAN
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Ishan Parmar
I applied via Referral and was interviewed in Nov 2021. There were 2 interview rounds.
(5 Questions)
- Q1. What is HO? and its type? Events in HO
- Ans.
HO stands for Handover. It is a process of transferring an ongoing call or data session from one cell to another.
There are two types of HO: Intra-cell HO and Inter-cell HO
Intra-cell HO occurs when a mobile device moves from one channel to another within the same cell
Inter-cell HO occurs when a mobile device moves from one cell to another
Events in HO include HO Request, HO Access, HO Required, HO Command, and HO Complet
- Q2. Whats is MCR ?How we can improve MCR? What is the reason of MCR?
- Ans.
MCR stands for Maximum Cell Rate. It is the maximum rate at which cells can be transmitted through a network.
MCR is an important parameter in ATM (Asynchronous Transfer Mode) networks.
It is used to ensure that the network does not become congested.
MCR is determined by the network operator and is based on the capacity of the network.
Improving MCR can be done by increasing the capacity of the network or by optimizing the...
- Q3. Whats is CQI and MCS?
- Ans.
CQI stands for Channel Quality Indicator and MCS stands for Modulation and Coding Scheme.
CQI is a feedback mechanism used in wireless communication systems to indicate the quality of the channel.
MCS is a technique used to modulate and encode data for transmission over a wireless channel.
CQI and MCS are used together to optimize the transmission rate and quality of wireless communication.
Higher CQI values indicate bette...
- Q4. Whats is Volte call flow?
- Ans.
Volte call flow is the process of establishing and maintaining a voice call over a 4G LTE network.
The call is initiated by the user and sent to the LTE network
The network sends a SIP invite message to the called party
The called party responds with a SIP 180 ringing message
Once the call is answered, the network sends a SIP 200 OK message
The voice call is established and maintained over the LTE network
- Q5. Whats is difference between cell throughput and user throughput?
- Ans.
Cell throughput refers to the amount of data transmitted by a cell, while user throughput is the amount of data received by a user.
Cell throughput is the total amount of data transmitted by a cell, including data sent to all users within the cell.
User throughput is the amount of data received by a single user within the cell.
Cell throughput is affected by factors such as the number of users, signal strength, and availa...
(4 Questions)
- Q1. Whats is CA?and its types?ands its combinations?
- Ans.
CA stands for Carrier Aggregation. It is a technology used in LTE networks to combine multiple frequency bands for higher data rates.
CA allows for faster data speeds by combining multiple frequency bands.
There are two types of CA: intra-band and inter-band.
Intra-band CA combines multiple carriers within the same frequency band.
Inter-band CA combines carriers from different frequency bands.
CA can be used in different co...
- Q2. Whats is interference?and its types with examples?
- Ans.
Interference is the unwanted signal that affects the quality of the desired signal.
Interference can be caused by external sources such as other wireless devices, power lines, or natural phenomena like lightning.
It can also be caused by internal sources such as reflections, multipath, or co-channel interference.
Types of interference include thermal noise, crosstalk, adjacent channel interference, and intermodulation int...
- Q3. Reasons of low throughput and how will improve low throughout?
- Q4. What is SIB?and different types of SIB?
- Ans.
SIB stands for System Information Block. It is a type of message used in wireless communication systems.
SIBs contain information about the network, such as cell identity, location area code, and frequency.
There are different types of SIBs, including SIB1, SIB2, SIB3, SIB4, SIB5, SIB6, SIB7, SIB8, SIB9, SIB10, SIB11, and SIB12.
SIB1 is the most important SIB, as it contains information about the cell identity, frequency,...
Interview Preparation Tips
Trust in yourself.and be honest.
Skills evaluated in this interview
KAMAL KUMAR
I applied via Naukri.com and was interviewed before Jul 2021. There were 2 interview rounds.
(4 Questions)
- Q1. Rssi , kpi, Nsb, dus to bbu migration
- Q2. Lte architecture ,lte frame
- Q3. Tdd ,fdd , half duplex and full duplex
- Q4. Call flow , scripts work
Interview Preparation Tips
- LTE
DEVENDRA KUMAR
I applied via Naukri.com and was interviewed before Oct 2021. There were 2 interview rounds.
(2 Questions)
- Q1. Tell me About yourself in brief
- Q2. Questions Related to Technologies and Prior Experience
Interview Preparation Tips
Selected
I was interviewed in Jan 2025.
(3 Questions)
- Q1. What is networking
- Q2. Explain in detail OSI model
- Q3. What is switch and routers
(2 Questions)
- Q1. Tell me about your self.
- Q2. What is RAN, VLAN, 4G,5G, incident management.
- Ans.
RAN stands for Radio Access Network, VLAN is Virtual Local Area Network, 4G and 5G are mobile network technologies, and incident management involves handling and resolving network issues.
RAN (Radio Access Network) is a part of a mobile telecommunication system that connects individual devices to other parts of a network through radio connections.
VLAN (Virtual Local Area Network) is a technology that allows multiple net...
(2 Questions)
- Q1. Tell me about BT, strength and weakness, small technical talk from my cv.
- Q2. Switch , router , modem questions.
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Skills evaluated in this interview
Malik Md
(2 Questions)
- Q1. WHAT IS QCI ? explain QCI7 !
- Ans.
QCI stands for QoS Class Identifier, a parameter used in LTE networks to differentiate between different levels of service quality. QCI7 is used for Internet of Things (IoT) applications.
QCI stands for QoS Class Identifier in LTE networks
It is used to differentiate between different levels of service quality
QCI7 specifically is used for Internet of Things (IoT) applications
- Q2. What is MME Drop and eNodeB Drop in LTE ?
- Ans.
MME Drop and eNodeB Drop in LTE refer to the loss of connection between the mobile device and the network due to various reasons.
MME Drop refers to the loss of connection between the mobile device and the Mobility Management Entity (MME) in LTE network.
eNodeB Drop refers to the loss of connection between the mobile device and the eNodeB (base station) in LTE network.
These drops can occur due to factors such as poor sig...
Interview Preparation Tips
Multmedia12
I applied via Walk-in and was interviewed in Jan 2024. There was 1 interview round.
(4 Questions)
- Q1. 1.what is the port no used by DHCP?
- Ans.
The port number used by DHCP is 67 (server) and 68 (client).
Port 67 is used by DHCP server to listen for client requests
Port 68 is used by DHCP client to send requests to the server
DHCP uses UDP protocol for communication
- Q2. 2.OSPF states ? 3.VTP Pruning? 4.what is DHCP? 5.what is Reverse ARP and how it is different from DHCP?
- Q3. 3.They will give you Ip address and mask you need to tell the pools of Ip's?
- Q4. 4.What is ISIS and MDLS
- Ans.
ISIS and MDLS are protocols used in networking for routing and network management.
ISIS (Intermediate System to Intermediate System) is a routing protocol used to exchange routing information between network devices.
MDLS (Management Data Input/Output Link Service) is a protocol used for network management tasks such as monitoring and configuration.
ISIS is commonly used in large enterprise networks and internet service p...
Interview Preparation Tips
- Routing protocols
- Switching
- Basic Networking Protocols
Simply they waited us for 2 hours.
Don't know they are Conducting Walk in Interviews or Simply wasting our time.
So, Please Be aware of this Company.
Skills evaluated in this interview
Selected
I applied via Naukri.com and was interviewed in Nov 2023. There were 2 interview rounds.
(5 Questions)
- Q1. Diploma cse Lileted
- Q2. Osi model network
- Q3. Computer ke Leleted
- Q4. Production quality
- Q5. Computer basic excel
Interview Preparation Tips
- Computer Networking
NOC Engineer Interview Questions & Answers
Aerial Telecom Solutions
Abhishek Singh
posted on 8 Jan 2024
Questions about networking and English
(2 Questions)
- Q1. Questions about technical knowledge of network
- Q2. What is arp? What is HSRP? WHAT IS GLBP? WHAT IS NAT
- Ans.
ARP is a protocol used to map an IP address to a physical MAC address on a local network.
ARP stands for Address Resolution Protocol.
It operates at the Data Link Layer of the OSI model.
ARP is used to resolve IP addresses to MAC addresses.
It is essential for communication between devices on the same network.
ARP requests are broadcasted to all devices on the network.
Example: When a computer wants to send data to another d...
Skills evaluated in this interview
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Ericsson RAN Engineer Interview Process
based on 2 interviews
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