Network(RAN) Performance & Optimization

A 3 month course on everything you need to know about Network Performance and it's optimization

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A Quick Overview

Network (RAN) Performance and Optimization is designed to help you learn about LTE Network Optimization, and in order to do so, we need to learn a few basic concepts such as introduction to 4G (LTE) system architecture, LTE protocols, Physical channels and signals, and a brief introduction of logical and transport channels. Once the basic concepts are understood, in-depth information about LTE is given, related to MIMO basic operations and different transmission modes with some basic concepts related to coverage and interference (RSRP, SINR, RSQQ, etc.). In brief, the course will talk about LTE network design concepts and how the network is originally established along with LTE optimization basics and a detailed description of different LTE KPIs such as accessibility, retainability, mobility,  and throughput KPIs. The common issues faced are introduced with a list of possible actions. This course concludes with concepts related to CS-fallback and VoLTE concepts, analysis and optimization. 


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Course Syllabus

1LTE introduction

  • LTE principle
  • LTE architecture 
  • LTE network interfaces
  • LTE services 
  • LTE general info

2LTE Network Design basics

  • Channel modeling basics
  • Link Budget   
  • LTE network design principles
  • LTE NW dimensioning 
  • Some LTE basics

3Optimization principles

  • Introduction to LTE network Optimization 
  • Optimization target 
  • Optimization procedure 
  • General concepts

4Coverage Optimization

  • Basic Procedures and call flows
  • Coverage parameters 
  • Weak coverage 
  • Overshooting 
  • Coverage holes
  • UL/DL imbalance 
  • Actix introduction

5Capacity Optimization

  • PDCCH capacity
  • PUCCH Capacity 
  • Spectral Efficiency 
  • Throughput Analysis (DL/UL)

6Capacity and latency Optimization

  • Accessibility KPIs optimization
  • User plane Latency 
  • Control Plane latency 
  • Call Setup phases
  • System KPIs
  • RRC messages on Actix

7Drop call and interference optimization

  • Attach Procedure
  • QoS profiles
  • DL/UL interference 
  • Call/E-RAB drops analysis
  • Retainability optimization

8Crash and Safety

  • Cell Selection/reselection
  • Mobility management 
  • Measurements and Handover Events
  • Handover Procedure
  • Measurements Gaps 
  • Inter-frequency Handover Optimization 
  • Intra-frequency Handover Optimization 
  • ANR

9VoLTE

  • Inter-RAT Mobility
  • Voice Evolution
  • Circuit Switched Fallback  
  • IMS
  • VoLTE architecture and Protocol Stack 
  • VoLTE capacity 
  • KPIs Analysis
  • VoLTE Codecs

10VoLTE optimization

  • RLC
  • RoHC feature 
  • Scheduling 
  • TTI bundling 
  • DRX Analysis 
  • SRVCC

11Advanced Optimization

  • RACH Optimization
  • Carrier Aggregation Optimization 
  • FDD-TDD Mobility Optimization
  • Load Balance
  • HetNet

12Advanced Optimization

  • Physical Cell ID optimization 
  • Tracking Area Optimization 
  • UL Signal Analysis 
  • Signaling Analysis 
  • Final thoughts and summary  


Projects

Project 1

Highlights

You are provided with RSRP and SINR of a cluster drive.

A cluster drive is usually done during a massive network roll out or upgrade or swap activities. It targets to improve the physical coverage and capacity of the network by mainly physical changes to provide dominance and to improve RSRP and SINR distribution. It will help the engineers to realize the user's service and to understand the performance in the network. 

First, it will start by pre-drive, then after analyzing the logs the engineers will ask for complete physical changes then upon implementing the changes, a post drive will take place in order to see the effect. 

Usually, smaller drives similar to cluster drive can be done whenever a new site is integrated in an area in order to see if any changes needed in neighbor sites in order to keep RSRP and SINR distribution excellent. 

In a stable network with not too many changes or upgrades, usually, the cluster drive will become less important. But there will always be a drive test to confirm the performance across different areas in the network, log traces to check for drop calls, etc. 

You are required to specify at least actions (physical changes or suggestions) for 5 areas in each category 

 

Project 2

Highlights

For this project, KPIs will be provided for 10 sites each with 3 cells, with some sample parameters and you need to study the KPIs and identify the worst cell. You are required to advise for some actions either by parameter changes or physical changes (only tilt changes are allowed).

Consider that the azimuth can’t be changed and in reality, this is sometimes the case that azimuth can’t be changed since the site might be collocated with another operator or other antennas are there on the roof for other services or due to some installation and space issues. 

Usually, in real life network, worst cell KPIs analysis is part of RAN optimization engineer responsibilities

In this imaginary network, there is only one carrier so you will not see any inter-frequency HO, as well as, the assumption that all X2 links are working with no issue so S1 HO attempts are zero

Try to check what might be the issue of any poor KPIs

What is provided is a small sample of the main basic KPIs, in reality you can generate reports from the system which will give much more details with service level drops as well. 

 


Flexible Course Fees

Choose the plan that’s right for you

Basic

2 Months Access

$92.89

Per month for 3 months

  • Access Duration : 2 Months
  • Mode of Delivery : Online
  • Project Portfolio : Available
  • Certification : Available
  • Email Support : Available
  • Forum Support : Available
Premium

Lifetime Access

$199.05

Per month for 3 months

  • Access Duration : Lifetime
  • Mode of Delivery : Online
  • Project Portfolio : Available
  • Certification : Available
  • Individual Video Support : 12/ Month
  • Group Video Support : 12/ Month
  • Email Support : Available
  • Forum Support : Available
  • Telephone Support : Available
  • Dedicated Support Engineer : Available

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Frequently Asked Questions

1Who can take your course?

Last year University students or any junior telecom engineer who would like to pursue a career in Telecom field as an RF Optimization/ Performance Engineer for 4G and future networks.

2What is included in your course?

LTE general introduction, basic design concepts and LTE KPIs monitoring and optimization that can be easily expanded to 5G systems understanding.

3What will the student gain from your course?

They will be able to get how the 4G network works in reality and they will take a glimpse of how the network operators maintain their network performance plus it will help the students to be able to grasp the concepts of 5G networks easily.

4What software skills are you teaching and how well are these tools used in the industry?

Mainly will only show snapshots from real-life tools that are used in industry for network data analysis and network Optimization. (snaps from the tool bcs log files are protected with NDA signed agreement so some data needs to be hidden) - such snaps can later be beneficial for tools such as Actix and XCAP.

5What is the real world application for the tools and techniques will you teach in this course?

Nothing specific, only general snaps from an actual tool will be shown and such snaps can be seen in reality such as Actix, XCAP, Genex, Planet, etc. All have the same concept so understanding the idea from the snaps will enable the student to understand any tools as well. At the end, each operator, even the project has its own tools so what matters is to understand the concept and then self-adapt to real-life applications.

6Which companies use these techniques and for what?

These techniques are used worldwide for all network operators (such as Vodafone, Verizon, STC, Rakuten Mobile, etc.) to optimize network coverage and capacity.

7How is your course going to help me in my path to MS or PhD?

This course is mainly industry related with minimum orientation towards theoretical/mathematical parts so it is meant for service engineering jobs not research and PhD track, some theoretical concepts will be introduced but not in detail like for academia.

8How is this course going to help me get a job?

This course will be a good introduction for RF optimization of 4G networks which will help the student who attends it to grasp concepts that are not covered by university programs.


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Certification

  • Top 5% of the class will get a merit certificate
  • Course completion certificates will be provided to all students
  • Build a professional portfolio
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  • E-verified profile that can be shared on LinkedIn

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