Certification in Long Term Evolution (LTE)

Certification in Long Term Evolution (LTE)




3rd Generation Partnership Project (3GPP) provides technical specification for the mobile networks. Long Term Evolution (LTE) is the 4th Generation standard of cellular networks given by 3GPP. The main focus of the LTE standard is to improve the mobile data rates.

The course provides good understanding of the LTE architecture. The contents cover detailed functionality of the network elements. The participants gain extensive knowledge on signaling protocols and interfaces used in LTE. Comprehensive comparison between various 4G standards with LTE deepens the understanding of the topic. The various procedures followed in LTE are explained using simple animation for better clarity and understanding. Certification program in LTE gives a technical edge over others and makes the participant likely more employable.

The course structure makes is mandatory for the participant to be active during the session. A short test at the end of the modules helps to keep track of your understanding and progress.

Sample Video

Basic understanding of mobile telecom network technologies like GSM, CDMA and WCDMA.

Module 1: Long Term Evolution Network Architecture

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  • LTE v/s 3G v/s 2G Networks
  • LTE/SAE Network Elements
    • eNodeB
    • Mobility Management Entity (MME)
    • Serving SAE Gateway
    • Packet Data Network (PDN) SAE Gateway
  • LTE Interfaces
    • X2 Interface
    • S1-U
    • S1-MME
    • S6a
    • S11
    • S5/S8
    • S7
    • SGI
    • RX+


Module 2: LTE Air Interface (Part 1)
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  • Principle of OFDM
  • OFDM Operation
  • Multipath Propagation and Inter Symbol Interference (ISI)
  • Cyclic Prefix
  • SCyclic Prefix – Types
  • Multi-carrier Modulation
  • OFDMA Symbol
  • Peak-to-Average Power Ratio in OFDMA
  • SC-FDMA Signal & Limitations of Single Carrier
  • Comparison of OFDMA and SC-FDMA
  • OFDMA Parameters
  • OFDMA Sub-carrier Types


Module 3: LTE Air Interface (Part 2)

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  • Importance of Data Protection
  • Concept of Channel Coding
  • Coding Algorithm (Block Codes, Conventional Codes)
  • Channel Coding Techniques:
    • Automatic Repeat Request (ARQ)
    • Forward Error Correction (FEC))
  • Different Methods of FEC:
    • Convolutional Codes
    • Interleaving
    • Turbo Coding
  • Error Correction Technique::
    • ARQ
    • HARQ



Module 4: Signalling in LTE Network

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  • S1 and X2 interfaces
  • LTE Radio Interface LTE states
  • Downlink Physical signal and channels
  • Uplink Physical signal and channels
  • Protocol Structure of S1-C or S1-MME
  • Protocol Structure of S1-U
  • S1 Interface Functions (Initial Context Setup, NAS Node Selection, Bearer Setup, Modification & Release, Paging, Mobility, Load Balancing)
  • X2 User Plane & Control Plane Protocol Structure
  • X2 Interface Functions
  • All Possible NAS and AS States in LTE
  • EMM (EPS Mobility Management) States
  • ECM (EPS Connection Mobility) States
  • RRC (Radio Resource Control) States
  • UE states in LTE
  • LTE Channels and Signals: Downlink
  • Modulation Schemes Used in LTE


Module 5: LTE Power Control and MIMO

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  • Introduction of Random Access
  • Random Access Procedure
  • Cases where Random Access Procedure is required:
    • Initial Access
    • RRC Connected
    • Handover
  • Types of Random Access Procedure:
    • Contention Based Random Access (CBRA)
    • Contention Free Random Access (CFRA)
    • Handover
  • Contention Based Random Access (CBRA) Procedure steps
  • Contention Free Random Access (CFRA) Procedure steps
  • Power Control in LTE
  • Types of Power Control:
    • Closed Loop Power Control
    • Open Loop Power Control
  • Closed Loop Power Control process
  • Open Loop Power Control process
  • Multiple Inputs Multiple Outputs (MIMO)
  • Basic terminologies used in MIMO:
    • Transmission Layer
    • Spatial Multiplexing
    • Transmission Layer
    • Rank
    • PMI Pre-coding Matrix Indicator
    • Beamforming
  • LTE Transmission Modes


Module 6: Radio Resource Management

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  • Introduction of RRC
  • RRC Protocol Model
  • RRC Functions and Procedures
  • Important RRC Messages (MIBs & SIB)
  • Introduction of Paging
  • Various cases where paging is required
  • Paging Occasion (PO) and Paging Frame (PF)
  • Paging Procedure
  • Cell Search Procedure
  • Various situations where a UE needs to go through the Cell Search Procedure


Module 7: Mobility Management

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  • Scheduling
  • Types of scheduling (Dynamic, Persistent, Semi-persistent)
  • Bearers
  • Types of bearer:
    • Default bearer
    • Dedicated bearer (GBR and Non-GBR)
  • Aggregate Maximum Bit Rate (AMBR)
  • Allocation and Retention Priority (ARP)
  • Quality of Service (QoS)
  • QoS Class Identifier (QCI)
  • Mobility in LTE:
    • Mobility in LTE IDLE mode:
      • Cell selection procedure
      • Cell re-selection procedure
    • LTE Measurement reports (Events)
    • Mobility in LTE connected mode:
      • X2-based Handover
      • S1-based Handover
      • Inter-RAT handover


    • What is LTE?
    • Evolution, architecture, signaling and interfaces in LTE
    • Functionality of network elements used in LTE
    • Radio resource management, mobility management and session management in LTE
    • Power control and MIMO
    • Different 4G standards

In E-learning mode the students are required to undergo the final certification exam after going though all the modules. The certfication exam is of 1 hour duration and would contain 50 questions. The students need to score atleast 60% marks to clear the certification.

Students are given unlimited attempts for clear the certification exam.

After Successfully Completing the exam , Cognitel will be awarding certificate for the same .

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