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4G(LTE) - Architecture, Features and Call Flow

A 2 month course on the fundamentals of 4G networks which covers the architecture and operations of the system

8 weeks long course | 100% Online

Learn from leading experts in the industry

Project based learning with 2 industry level projects that learners can showcase on LinkedIn.

Learn Key Tools & Technologies LTE-Sim, Open5GS

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Syllabus

This course is full of best-in-class content by leading faculty and industry experts in the form of videos and projects

Course Overview

  • The students will gain a thorough knowledge of the architecture and operation of the LTE System including the OFDM-based Radio Interface.
  • During the coursework, the students will learn the following concepts:
    • LTE Architecture, Features, Call Flows, Protocol Stack, and working scenarios with various Real-time Call Logs and Configurations.
    • 3GPP Specifications for LTE by deep diving into the Function (and implementation) of each of the Network Nodes, Interfaces, and Procedures.
    • VoLTE and Evolution of 5G
  • The course will also give an overview of the software tools such as LTE-Sim and Wireshark, which are widely used in the industry.
  • The students are exposed to the modern trends and standard practices being followed in the industry right now.
  • This course forms the foundation for anyone wanting to become LTE RAN Developer, LTE Core Developer, LTE Feature Tester, UE Feature Development and Testing Engineer, Systems Engineer, and RF Engineer.

Course Syllabus

On a daily basis we talk to companies in the likes of Tata Elxsi and Mahindra to fine tune our curriculum.

Week 01 - Introduction to 4G systems, OSI layers, LTE call flows & Basics of C- Part 1

  • Introduction to 3GPP & 4G subsystems
    • 3GPP evolution & multiple access schemes
  • OSI layers & networking protocol
    • OSI layer introduction and corresponding protocols
    • TCP vs UDP
  • IP subnetting & routing
    • IPv4/IPv6

Week 02 - Introduction to 4G systems, OSI layers, LTE call flows & Basics of C- Part 2

  • LTE bands, architecture & Interfaces
    • LTE frequency, bands, and bandwidth
    • LTE architecture and interfaces
  • LTE frame structures, resource block & bearers
    • LTE Frame structure DL/UL(SFN, SF, slot)
    • Resource block
    • Bearers
    • Quality of service
  • LTE protocol stack & channel mapping
    • LTE RAN protocol stack - Introduction and mapping
    • LTE channels and mappings
  • LTE initial synchronization
    • Basic procedure: Cell search
    • Synchronization procedures
    • Synchronization signals - PSS, SSS
    • Cell ID detection

Week 03 - Initial Access, Frames and MAC of LTE- Part 1

  • LTE initial attach call flow
  • LTE call flow - initial attach
  • LTE PDCP
  • LTE RLC

Week 04- Initial Access, Frames and MAC of LTE- Part 2

  • LTE MAC
    • MAC
  • LTE PHY procedures
  • LTE SRB & message mapping
    • LTE SRB
    • LTE messages & mappings with channel, PDCP/RLC/MAC involvement & SRBs
    • SRB, DRB, ERAB ID mapping to LCID
  • LTE RRC-NAS
    • RRC/NAS
    • RRC overview and state
    • RRC Connection Re-Establishment
    • NAS Procedures

Week 05 - RLC, RRC / NAS, PDSCH, PDCCH, HO & Advanced C- Part 1

  • LTE Handover & Measurement events
  • LTE RACH procedure
  • LTE DCI

Week 06 - RLC, RRC / NAS, PDSCH, PDCCH, HO & Advanced C- Part 2

  • LTE PDCCH
    • PDCCH in detail
    • Search space, blind decoding, PDCCH candidate
  • LTE Resource Allocation
    • PDSCH in detail
    • Resource allocation
  • LTE PUCCH
    • PUCCH in detail
    • UCI(SR, CQI, HARQ ACK/NACK)
    • PHICH in detail
    • HARQ process overview
  • LTE MAC Scheduler
    • Scheduler & Scheduling types
    • Scheduling flows
    • TB size & MCS calculation

Week 07 - RLC, RRC/NAS, PDSCH, PDCCH, HO & Advanced C- Part 3

  • LTE EPC nodes & interfaces
    • MME
    • PGW
    • SGW
    • NAS
    • S1AP
    • HSS
    • PCRF
    • DIAMETER
  • LTE DRX & paging
  • LTE TAU & identifiers
    • TAU in detail
    • LTE IDs
    • RNTIs

Week 08 - RLC, RRC/NAS, PDSCH, PDCCH, HO & Advanced C- Part 4

  • LTE UE related MAC features
    • BSR
    • PHR
    • Backoff indicator
  • VoLTE overview : IMS, LTE_EPC and PCC nodes, interfaces and functions
  • Typical VoLTE: Call flow establishment
    • VoLTE Nodes
    • IMS Core
    • VoLTE Call Flow
  • 4G vs 5G
    • Evolution to 5G - comparison between 4G and 5G
    • Numerology, Slot, SCS, Frame Structures, mmWave
  • 4G vs 5G Part2
    • SDAP
    • Difference in MAC, RLC, PDCP
    • 5G core reference architecture
    • 5G core SBA

Our courses have been designed by industry experts to help students achieve their dream careers

Industry Projects

Our projects are designed by experts in the industry to reflect industry standards. By working through our projects, Learners will gain a practical understanding of what they will take on at a larger-scale in the industry. In total, there are 2 Projects that are available in this program.

Customization of LTE-Sim

The LTE project is based on the customization of “LTE-Sim” an open-source framework to simulate LTE networks. The developed LTE-Sim encompasses several aspects of LTE networks, including both the Evolved Universal Terrestrial Radio Access (E-UTRAN) and the Evolved Packet System (EPS). It supports single and heterogeneous multi-cell environments, QoS management, multi-user environment, user mobility, handover procedures, and frequency reuse techniques.

Configuration of an LTE Network

The project is based on open5gs, an open-source EPC and 5G Core platform. This project can be used to configure your own LTE network. With this project you can create different scenarios, test them and analyse them. Open5GS implemented EPC using C-language.

Our courses have been designed by industry experts to help students achieve their dream careers

Ratings & Reviews by Learners

Skill-Lync has received honest feedback from our learners around the globe.

Google Rating
4.6

Instructors profiles

Our courses are designed by leading academicians and experienced industry professionals.

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1 industry expert

Our instructors are industry experts along with a passion to teach.

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10 years in the experience range

Instructors with 10 years extensive industry experience.

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Areas of expertise

  • Wireless Networking & Communication

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