Troubleshooting of the LTE Radio Interface

4 Days
N

EPS Overview and E-UTRAN Protocol Architecture

N

Uu-Interface (E-UTRA Radio Interface) Protocols

N

The X2 Interface

N

Mobility

N

Interworking

N

E-UTRAN Signalling Procedures and Hands-on Exercises

Virtual Classroom Training

€ 2780 *

CLASSROOM TRAINING

€ 2780 *

RECORDED TRAINING

N/A

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This course provides in-depth knowledge of protocols and procedures found on Evolved UTRAN (E-UTRAN) through theory, case studies and self-solved hands-on exercises.

Complex practical troubleshooting and optimization activities are made simple using monitoring tools, such as TEMS Investigation, and log-files recorded in live networks. Throughout the course a number of signalling scenarios are analyzed, showing both successful and failed scenarios.

NOTE: Participants are required to have a Windows laptop.

Who should attend?

This course is targeted at telecom professionals working on troubleshooting, quality assessment, optimization, and OAM of E-UTRA.

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Prerequisites

Participants must hold basic knowledge of LTE/EPC network architecture, terminology and modes of operation. For required background knowledge, attending Apis’ course LTE/EPC System Overview (or equivalent) is recommended. Additionally, familiarity with E-UTRA interface, protocols and signalling scenarios, so as with network monitoring tools, e.g. TEMS Investigation, would be beneficial.

Course Outline

EPS Overview and E-UTRAN Protocol Architecture
  • Mobile network evolution: GSM to EPS
  • Network nodes, areas, bearer concepts and identity numbers introduced for EPS
  • EPS interfaces and protocols
  • E-UTRA frequency bands and UE capabilities
  • Logical, Transport and Physical channels and their relation to the radio interface protocol stack
  • X2, S1 and S11-interface protocol stacks
Uu-Interface (E-UTRA Radio Interface) Protocols
  • NAS procedures (EMM and ESM)
  • RRC procedures
  • UE states and state transitions (NAS and RRC)
  • PDCP and RLC protocols
  • MAC and E-UTRA Scheduling
  • Dynamic scheduling and semi-persistent scheduling
  • Hybrid-ARQ
  • E-UTRA Physical Layer
The X2 Interface
  • X2 Application Protocol (X2AP) procedures
  • Inter cell interference cooperation
  • Data forwarding and in-order delivery of data PDUs at handover
Mobility
  • Cell Reselection procedure
  • Tacking Area Update
  • Measurement Control & Reporting
  • LTE Events
  • Handover between eNodeBs
Interworking
  • Interworking with legacy R8 or pre-R8 3GPP networks
  • CS Fallback
E-UTRAN Signalling Procedures and Hands-on Exercises
  • Random access procedure
  • RRC connection establishment
  • Attach procedure, incl. establishment of default EPS bearer and security associations
  • Dedicated Bearer activation
  • Mobility and Interworking
  • Troubleshooting Case Studies

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