Due to its worldwide success and leveraging the economy of scale, global public safety organizations recognized LTE as the future de-facto standard for mission critical mobile broadband communications. In some region respective spectrum is already being allocated and first private networks start to operate. Nevertheless, public safety systems have substantially different requirements (e.g. in terms of reliability, efficiency, data rates, user density, coverage, security, core network availability) compared to commercial LTE networks.

While most of existing LTE technologies for unicast data transmission, Enhanced Multi-media Broadcast Multicast Services (eMBMS) or Voice over LTE (VoLTE) can be reused as is, there is a need of new technologies enabling device proximity detection services, device to device, push to talk or group communication even when being out of coverage. In 3GPP Release 12 and 13 such requirements are taking into account and such new functions are being standardized. Some of work items are Group Communication Service Enabler, Proximity Based Services, Isolated E-UTRAN Operation or Mission Critical PTT over LTE.

Training Schedule


This course has been designed to provide fundamental supplier independent knowledge about the LTE technology, planned additional features and its usage in future Public Safety systems. Users, operators, regulators, decision makers, project managers, engineers and other interested parties will benefit from this training course.

Day 1

Requirements & Markets
  • Public Safety & Broadband Requirements
  • Public Safety TETRA market
  • LTE Markets
Standardization & Organizations
  • 3GPP Standardisation Principles and Releases
  • 3GPP Working Group SA6 on Mission Critical Applications
  • Public Safety related work in ETSI and OMA
  • Other interest organisations (TCCE, CCBG, PSCE)
  • Public Safety in North America (NPSTC and FirstNet)
  • Supplier organisations and Interoperability
Frequency Bands & Spectrum
  • Current and Future Public Safety Spectrum
  • LTE Licenced Spectrum
  • LTE-Unlicensed (License Assisted Access)
  • Shared Spectrum
Overview TETRA Architectures & Interfaces

Current Public Safety Systems (TETRA)

Introduction to LTE System Architecture & Interfaces
  • Evolved Packet Core Entities and Functions  (HSS, MME, PCRF, S-GW, P-GW)
  • LTE Bearer Concept and Quality of Service Architecture
  • LTE Transport Layer with S1/X2 Interfaces

Day 2

Overview LTE Technology Radio Access
  • Uplink / Downlink Radio Access Principles 
  • Physical Shared Channels and Control Channels
  • LTE Physical Channel and Transport Channel
  • Physical Signals, UL/DL Frame Structure
  • Random Access and RRC Connection Setup
  • Handover Procedure
LTE-Advanced Carrier Aggregation and Small Cells

Overview LTE/LTE-A UE Capabilities

Existing LTE Public Warning Systems
LTE Access Control

Access Classes and Access Barring

LTE Public Warning Systems
LTE Public Safety Features
  • Public Safety Requirements & ETSI Reference Model
  • GCSE (Group Call Service Enabler)
  • Enhanced Multi-media Broadcast Multicast Service
  • eMBMS Overview and Channel Structure
  • Single Frequency Network using MBSFN Transmission
  • Use of eMBMS for Group Communication
  • Unicast/Multicast Multiplexing
ProSE (Proximity Based Services)
  • Device to Device Proximity Services
  • In-coverage and out-of-coverage scenarios

Day 3

D2D (Device to Device Communication)
LTE Security
D2D Relay
  • UE to UE and UE to Network Relay
Voice & Group Communication
  • Voice over LTE
  • MCPTT (Mission Critical PTT over LTE)
Mission Critical Multimedia Services
Availability & Resilience
IOPS (Isolated E-UTRAN Operation for PS)
Security & Encryption
  • LTE Security
LTE Deployment Scenarios and Implementation Aspects for Public Safety
  • Overview and Scenario Details
  • Migration to Critical Communications LTE Networks
  • Deployment Examples of LTE Public Safety Networks
  • Different Level of Cooperation/Coordination between Commercial and Public Safety Networks
LTE Network and User Equipment or Public Safety
Summary of Current LTE Publis Safety Features and Outlook to Future Standardisation, including 5G