LTE - E-UTRAN Protocols and Procedures
(3 days or 18 hours)
The E-UTRAN is an IP based network providing connectivity between the mobile and the EPC (Evolved Packet Core). This course takes an in-depth look at the protocols and procedures used within the E-UTRAN to establish, manage, maintain, and release subscriber IP sessions across the access network. Those attending this course should have a good knowledge of LTE such as that provided by mpirical’s LTE System Engineering course.
Who Should Attend
Network Engineers who require a comprehensive explanation of the E-UTRAN. Technical Staff involved in the development and deployment of the E-UTRAN.
Pre - Learning
Pre-Learning is provided to prime those attending the instructor led phase. Each lesson is based on an interactive online format and should take about 30 minutes to complete. The pre-Learning lessons are:
- Test of Understanding - Try the online check to see how much you know.
- LTE Network Architecture.
- LTE Operation.
- Basics of LTE Mobility.
Course Outline
Divided into 10 sections, the topics covered will include:
Section 1: Introducing the E-UTRAN (1.5 hours)
- 3GPP Evolution, HSDPA, HSUPA and HSPA+, HSDPA Enhancements, HSUPA Enhancements and One Tunnel Architecture.
- Why LTE, IMT Advanced, RIT for IMT-Advanced and aims of LTE.
- MIMO in LTE, SU-MIMO, MU-MIMO, STC, SM and Adaptive MIMO Switch.
- LTE Architecture, E-UTRAN, E-UTRA, eNB and E-UTRAN interfaces, Evolved Packet Core, MME, S-GW and PDN Gateway.
- User Equipment functionality and Identities, GUTI, M-TMSI, S-TMSI and C-RNTI.
- Network Identities, TAI (Tracking Area Identity), Cell Identity.
Section 2: LTE Services and Procedures (2 hours)
- LTE initial procedures, power on, cell search, location of downlink synchronization signals, Primary Synchronization Signal and Secondary Synchronization Signal, Broadcast Information and scheduling.
- PLMN Selection and Initial Cell Selection algorithms, Cell Reselection algorithms.
- Initial network access, location of PRACH, PRACH frame formats, contention based random access, establishment of the radio control plane bearer.
- Initial Attach, authentication, creating the Default Bearer, Policy and Charging Rules interaction, uplink and downlink data flows.
- Self Organizing Network operation, automated procedures and Automatic Neighbour Relation.
Section 3: S1 Interface and Operation (2 hours)
- The E-UTRAN Interfaces overview, S1 interface, links to eNB, MME and S-GW.
E-UTRAN Protocol Specifications, 36.4xx (E-UTRAN Architecture Description), 36.41x (S1 interface), Signalling Transport, SCTP, S1 AP, GTPv2-C, GTPv2-U.
- S1 AP Messages, example message layouts and Class 1, 2 and 3 S1 Application Part Elementary rocedures.
- Example S1 Procedures, NAS Transport, Initial Context Setup, E-RAB Establishment and Handover.
- GPRS Tunnelling Protocol, GTP Header, GTP Message Format, GTP Paths, GTP Tunnels, GTP Messages and GTP Procedures.
- S1-Flex Procedures, examples of Network Sharing in LTE.
Section 4: E-UTRA Interfaces and Operation (2 hours)
- The E-UTRA Interface, Stratums, NAS Control Plane, NAS User Plane, NAS Messages, EMM Messages and ESM Messages.
- LTE States, EPS Mobility Management States, EMM-DEREGISTERED, EMM-REGISTERED, EMM States in the UE, EMM States in the MME. EPS Connection Management States, ECM-IDLE, ECM-CONNECTED
The E-UTRA Protocols, Radio Resource Control, RRC Messages, RRC States, Establishment of an RRC Connection.
- LTE security architecture, LTE authentication, algorithms and key generation, UEA2 encryption and UIA2 integrity algorithms.
- Security interworking, EAP AKA and 3GPP AKA process, future AAA architecture, the role of Diameter.
Section 5: E-UTRA Layer 2 (1.5 hours)
- The E-UTRA Protocol Stack, PDCP, PDCP services and functions, PDCP profiles, compression standards, PDCP headers and frame formats.
- RLC, RLC Transparent Mode, RLC Unacknowledged Mode and RLC Acknowledged Mode, RLC PDU’s, the TMD PDU, UMD PDU, AMD PDU, AMD Segment PDU and the RLC Status PDU.
- MAC functions operation and protocol format.
- Logical Channels, BCCH, PCCH, CCCH, DCCH, DTCH.
- Transport Channels, BCH, DL-SCH, PCH, UL-SCH, RACH.
- Mapping Logical Channels into Transport Channels, RNTI Identities, random access process, non-contention based random access procedure.
Section 6: E-UTRA Physical Layer (2 hours)
- LTE generic frame structure, Type 1 Radio Frames, slots and subframes, Type 2 Radio Frames, slots and subframes, frequency bands, carrier frequencies and EARFCN.
- Channel bandwidths, and channel bandwidths per operating band, Resource Grids and Resource Blocks, downlink PRB parameters, uplink PRB parameters.
- The LTE downlink physical channels, PBCH, PCFICH, PDCCH, PHICH, downlink Synchronization Signals, Primary Synchronization Signal, Secondary Synchronization Signal, downlink Reference Signals and Cell Specific Reference Signals for MIMO operation.
- The LTE uplink Physical Channels, PRACH, PUCCH, PUSCH.
- Uplink data Transmission, uplink reference signals and demodulation reference signals.
Section 7: Mobility and Interworking (2 hours)
- LTE mobility, LTE cell planning, capacity and coverage planning, frequency deployment options.
- Mobility functional architecture, role of the eNB and MME, Tracking Areas.
- Idle Mode procedures, Cell reselection, high and medium mobility state, ranking of cells, Tracking Area Update.
- Mobility in the LTE Active State, measurements and gap configurations, event triggers, timing, the handover process.
- 3GPP interworking, E-UTRAN to UTRAN / GERAN RAU procedure, E-UTRAN to UTRAN / GERAN handover procedure.
- Non 3GPP interworking, trusted and un-trusted non 3GPP IP access networks, network based and host based mobility for non 3GPP networks, handover from 3GPP access to trusted non 3GPP access, handover from 3GPP access to un-trusted non 3GPP access using PMIP.
Section 8: X2 Interface and Procedures (2 hours)
- The X2 Interface, architecture of the X2 Application Part, functions of the X2 Application Protocol and X2 Elementary Procedures.
- Basic Mobility Procedures - Handover, SN Status Transfer.
- Global Procedure Messages, Load Indication, Resource Status Reporting Initiation.
- X2 Setup, eNB Configuration.
- E-UTRAN Layer 2 measurements - PRB Usage, Packet Delay, Active Users per QCI and PRB Usage for SRB.
Section 9: MBMS Delivery (1.5 hours)
- Multicast and Broadcast Services, Mobile TV, audio and video, multi user applications.
- Economics of unicast and broadcast network deployments.
- Multimedia Broadcast Multicast Service, MBMS Architecture, MCE (Multi-cell / multicast Coordination Entity), MBMS GW and the Broadcast Multicast Service Centre.
- RAN Requirements, MBMS Terminals, MBMS Modes, Broadcast Mode, Multicast Mode.
Section 10: End to End Operation (1.5 hours)
- Services over LTE, voice and data service architecture.
- Mobile web, end to end signalling, use of WAP and HTTP.
- Voice services, SIP (Session Initiation Protocol), RTP (Real time Transport Protocol), interworking with GSM, UMTS and the PSTN.
- Video Streaming.
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