QoS and QoE of Advanced Mobile Networks

Mobile phone network

The increasing uptake of Internet of Things , Big data and cloud-based services introduces a new set of requirements for network performance. Furthermore, the evolution of mobile networks towards an all-IP 4G LTE, Voice over LTE (VoLTE) and 5G introduces new challenges for traditional voice and data services. It is critical for operators to guarantee minimum levels of performance. Therefore, operators need to understand and manage both quality and performance of the services to fulfil the technical quality of service (QoS) as well as the quality of experience (QoE) level.

QoE is directly related to QoS. Therefore, one can map the objective QoS measurements (e.g. delay, packet loss and jitter) into the user’s perception QoE, through an appropriate set of tools and processes. QoS is defined as the capability of the communication network to provide a service at an assured service level. QoE basically depends on customer satisfaction in terms of usability, accessibility, and integrity of the service. QoE, however, is not limited to the technical performance of the network; there are also non-technical aspects, which influence the user perception and satisfaction.

In LTE Network, QoS is implemented between UE and PDN Gateway and is applied to a set of bearers. VoLTE QoS covers all the QoS and QoE features in LTE and LTE-A to support VoLTE. One of the major challenges associated with VoLTE is defining the features of the QoS for the LTE RAN, EPC and IMS.

VoLTE QoS covers how LTE networks support end-to-end QoS for different IP-based services such as voice, video, multimedia messaging, and gaming. QoS in LTE Radio, EPC, LTE Backhaul and Core Network, PCC (Policy and Charging Control), EPS Bearers, policy, QCI for voice and video applications are covered. Voice over LTE will play a key part in determining a subscriber’s QoE on a LTE/EPC/IMS network.

  • Regulators and telecommunications personnel who require a strong knowledge of LTE, LTE-A, VoLTE, VoIP, IMS, 5G technologies and mechanisms
  • Personnel in charge of telecoms regulation and the configuration and monitoring of a 4G or 5G network
  • Operations and maintenance personnel who are required to understand LTE and how 4G and 5G function
  • All regulators, engineers, technicians and managers working in LTE 4G, 5G, GSM, UMTS, Wi-Fi network environment
  • Define, understand, and effectively measure QoS and QoE in advanced mobile networks
  • Perform QoS mapping, ensuring efficient allocation and management of network resources
  • Implement QoE mapping techniques to optimize user experience in advanced mobile networks
  • Demonstrate a comprehensive understanding of LTE technology, with a focus on releases 8 and 9
  • Analyze LTE system architecture, including its air interface and key components
  • Apply the LTE QoS framework and establish its correlation with QoE, ensuring superior network performance
  • Evaluate the advancements in LTE-Advanced, specifically in Release 10 and beyond, and understand their impact on mobile networks
  • Implement LTE-Advanced carrier aggregation techniques to enhance network capacity and performance
  • Demonstrate proficiency in Evolved Packet System (EPS) signalling, including knowledge of interfaces, protocols, and contextual awareness
  • Understand the principles of IP Multimedia Subsystem (IMS) and VoLTE call procedures
  • Conduct QoS and QoE measurements during VoLTE procedures to ensure voice quality and network performance
  • Gain insight into the architecture of 5G networks and their impact on QoS advancements
  • Apply 5G QoS advancements to meet the evolving demands of mobile network users and applications
Instructor-led Training
  • Classroom: 5 days
  • LIVE Virtual*: 35 hours
  • A minimum of 6 or more participants are required for a company-based LIVE Virtual course to commence
  • LIVE Virtual courses can be conducted for 5 hours or 7 hours daily. Please note that the number of training days will be extended if you opt for 5 hours daily.

10 – 14 Jun 2024 (Mon – Fri), GMT +08:00
7 – 11 Oct 2024 (Mon – Fri), GMT +08:00
If you are keen on attending any of the above scheduled courses, please register your interest via our course enquiry form.

  1. Defining, Understanding and Measuring QoS and QoE
  • What is QoS (Inward Looking, Network Oriented) and QoE (Outward Looking, Customer-focused)
  • Measuring QoS and QoE in Mobile Networks
  • QoS is Based on Technical and Lower Layer Parameters in RF, Signalling, and IP
  • QoE uses Events on Application Layer or Above More Often
  • QoS Parameters allow Users to Efficiently Spot Technical Problems and Bottlenecks in the Network
  • QoE Provides an End-to-end View and is often Based on Feedback given by a User
  1. QoS Mapping
  1. QoE Mapping
  1. LTE Overview Release 8 / 9
  • LTE Channel Architecture
  • OFDM Basics (Subcarriers, IFFT, Cyclic Prefix, etc.)
  • LTE Radio Frames (Subframes, RE Mapping, etc.)
  • Contents and Mapping of DL / UL Control Channels
  • DL / UL Transmission Procedures (Scheduling & HARQ)
  1. LTE System Architecture
  • LTE Network Architecture
  • Network Elements – eNB, aGW (MME / UPE)
  • LTE Interfaces – S1-MME, S1-U, S3, S4, S5, S6a, Gx, S8 – 13 etc.
  • System Architecture Evolution (SAE)
  • Evolved Packet Core (EPC)
  • E-UTRAN Architecture
  1. The LTE Air Interface
  • Physical Layer
  • LTE Frame Structure
  • LTE Logical and Transport Channels
  • Layer 2 Procedures
  • OFDM
  • Multiple Antenna Techniques
  1. LTE QoS Framework and Tying It to QoE
  • E-UTRAN Architecture and Interfaces
  • EPS Bearer and PDN Connectivity Options and Operations
  • User Plane Connection Concepts, Packet Flows, SDFs and Traffic Flow Aggregates
  • LTE QoS Parameters, QCI, ARP
  • QoS Parameter Representation in LTE Signalling Protocols
  • QoS Management – TFTs and Packet Filters
  • LTE PCC (Policy and Charging Control) Mechanisms
  • PCC Rules, Function and Structure for Supporting QoS and QoE
  • Interaction between PCC Elements and Internal and External Network Nodes
  • Mapping LTE QoS to Legacy Network Schemes
  • Measuring QoS and Tying it to QoE
  • QoS Influence on LTE Handovers
  1. LTE-Advanced: Rel. 10 and Beyond Overview
  • IMT-2000 Compliant 4G Standards
  • Definition of LTE-Advanced
  • Difference between LTE and LTE Advanced
  • LTE Advanced E-UTRAN Architecture – Relays and HeNBs
  • 3GPP Specifications for LTE-Advanced
  • Requirements and Targets for LTE-Advanced
  • Summary of Self Evaluation Results
  1. Advancements in LTE Advanced
  • Multi-Hop Transmission (Relay)
  • Multi-Cell Cooperation (CoMP: Cooperative Multipoint Tx / Rx)
  • Interference Management in Heterogeneous Cell Overlay
  • Bandwidth / Spectrum Aggregation
  • MIMO Enhancement
  • Hybrid Multiple Access Scheme for UL
  • DL / UL Inter-cell Interference Management
  • Self-Organizing Network (SON)
  • Relay
  • CoMP
  • Heterogeneous Cell Overlay
  1. LTE-A Carrier Aggregation
  • Type of Carrier Aggregation
  • Deployment Strategies
  • E-UTRA CA Bands Notation
  • UE Bandwidth Class
  • Channel Bandwidths per Operating Band for CA
  • E-UTRAN Aspects
  • Impact of Carrier Aggregation on Signaling Aspects
  • Transport (MAC) Layer Aspects
  • Carrier Activation / Deactivation and Discontinuous Reception DRX
  • Physical Layer Aspects
  • Radio Resource Control (RRC) Aspects
  1. EPS Signaling – Interfaces, Protocols & Contexts
  • Protocol Stacks for EPS
  • Radio Protocols
  • The RRC Protocol
  • EPC Protocols
  • The S1 Application Protocol
  • The NAS Protocols (EMM and ESM)
  • The GTP Protocol
  • Encapsulation and Tunneling
  • The SGs Interface
  • Allocated Resources
  • Dedicated Bearer Activation
  • GERAN / UTRAN / E-UTRAN Coverage
  • Idle and Connected Mode
  • Contexts
  1. IMS
  • The Scope of IMS
  • IMS Architecture
  • Registration and Invitation
  • Protocol Stack in PGW
  • SIP Invitation, Non-IMS User
  • Public and Private IMS Identities: IMPI & IMPU
  • IMS Service Profile
  • Traffic Case: IMS Invitation
  • Protocol Stack IMS Profile for Voice in EPS
  • IMS Profile for voice
  • IMS Registration and De-registration
  1. VoLTE Call Procedures
  • High Level SIP Signalling Flow: Understanding the IMS Signalling Flow
  • VoLTE to VoLTE Call Establishment
  • Delivering the SDP Offer
  • Delivering the SDP Answer
  • PRACK, Preconditions and Acceptance
  • VoLTE Call Termination
  • Activity: NetX Based Detailed Analysis of a VoLTE-to-VoLTE Call Flow
  1. QoS and QoE Measurement in VoLTE Procedures
  • VoLTE Accessibility
  • VoLTE Retainability
  • VoLTE Mobility
  • VoLTE Capacity and Coverage Overview
  1. 5G Architecture
  • Objective of the Architecture
  • Architecture of 5G
  • Different from LTE
  • Master Core Technology
  • Flexible Frame Structure and Design
  • 5G Design Principles
  • Flexibility
  • Reliability
  • Various Components and Functions
  • Network Softwarization and Programmability
  • Impact on Mobile technologies
  • Impact on Service and Infrastructure Management and Orchestration
  • Key Differences between 5G and Previous Cellular Technologies
  1. 5G QoS and Advancement
  • 5G Radio
  • Migration to 5G
  • Advanced Features Details
  • How Operators can Transit Smoothly to 5G
  • 5G Use Cases
  • 5G and IoT Framework Compatibility
  • 5G’s Fundamental Role in IoT

Note: A Certificate of Completion will only be issued upon achieving at least 75% attendance for the course.

The audience for this course is regulators, telecommunications personnel who need a strong background about the LTE, LTE-A, VoLTE, VoIP, IMS, 5G technologies and mechanisms. It is a pre-requisite for the personnel-in-charge of the regulation, configuration, monitoring of a 4G, 5G network. The operations and maintenance folks will get an introduction to LTE and how 4G, 5G work and function overall.

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