5G Radio Topics
Course Objective: To provide good understanding of 5G Radio technology and its
enhancements. The course will start with the key aspects of LTE-A PRO to enable the
participants to learn 5G Radio effectively. We will then discuss key aspects of 5G Radio
technology. We will also address some of the latest topics coming up in the standards by
involving some of the CeWIT contributors to the standards including topics like integrated
access and backhaul.
Duration: 5 Full days (online; delivered in half-day sessions)
Learning Objectives:
1. LTE-A-PRO evolution
2. 5G Objectives
3. 5G NR Concepts
4. Numerology, frame structure, slots
5. Flexible/dynamic TDD in 5G
6. 5G NR Operations; initial access, RACH, and other steps with involvement of beams
7. RRC Connection Establishment Steps
8. DL and UL Data Transfer; channels and differences with LTE
9. Feedback, measurements; differences with LTE (CSI-RS, DMRS, PTRS, etc.)
10. MIMO in 5G NR and differences with LTE
11. 5G RAN implementation aspects (NSA and SA); Call flows in NSA and SA; Differences
12. Mobility in 5G
13. ORAN Ideas in 5G
14. 5G Future
Prerequisites: Legacy Cellular Networks, 5G Overview, LTE Air Interface
Training Delivery Mode: Instructor led live classroom session
Target audience: R&D Engineers, Network Engineers, Technical Managers, Technical
Members, Leadership Teams
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Course Outline
Module 1: 5G Technology overview (4 hours)
 LTE Evolution Summary; LTE-A-PRO Features
o LTE FD-MIMO Enhancements (massive MIMO)
o LTE-IOT enhancements (FeMTC, NB-IOT enhancements)
o LTE low-latency enhancements
o LTE unlicensed band enhancements (eLAA)
 5G Objectives
 New applications; connected cars, low-power IOT, FWA,
Gbps/latency requirements
 5G use cases and service scenarios; eMBB, URLLC, MMTC
 Rates, latencies , and other targets for 5G
 Spectrum for 5G; mmwave and the challenges
o Why mm-wave and the initial target bands
o 5G-4G DSS
 Key approaches for 5G in RAN
o Cloud RAN and its support in 5G
o Different possibilities in cloud RAN implementations
 5G and LTE links; dual connectivity and NSA deployment
 5G core network - basics
 Network slicing; what is it? What are the advantages?
 Service based architecture concept in 5G
 Wi-Fi and 5G; competition or cooperation?
 Emerging areas in the next phase of 5G
o Unlicensed bands, cellular V2X etc.
 3gpp 5G standardization Status update; timeline for 5G
o Why the initial 5G RAN focused initiative?
o Timeline and targets for R16 and topics for R17
Module 2: 5G NR Concepts (8 hours)
 5G Radio Objectives
 Key points in 5G NR; flexibility, mm-wave spectrum, MIMO
approaches
 Why OFDMA for 5G NR? Lessons learnt from LTE
 5G NR OFDMA;
o Flexible numerology; why?
o Subcarrier spacing- motivation and details
o Challenges
o Examples of suitable numerology for different applications
and bands
 5G NR Frame Structure
o slots, subframes, and other details
 Why such numbers and their potential uses
o Timing examples for different numerology
o Handling low latency
 Main steps in waveform design and slot design
 5G NR numerical example in different conditions; subcarrier
spacing, slot times, etc.
 Key differences between FR1 and FR2 parameters
 TDD flexibilities in 5G
o Possibilities and support structure
 Motivation and potential scenarios
 Flexible TDD; Motivation and details
 Sample TDD transmission frames
o Interference challenges and their handling
 FEC in 5G
o LDPC for data – benefits
o Polar coding for control – what is it and the benefits
 Massive MIMO. What is it? What does it involve?
o SU-MIMO vs. MU-MIMO
o FR1 and FR2 aspects of MIMO
o Why massive MIMO?
o Beam steering vs. beamforming
o Differences in approaches with LTE
 Implementation challenges in massive MIMO; Analog, Digital, and
Hybrid Beamforming Concepts; why and what ?.
 Motivation for Bandwidth Parts; Why BWP and basics
Module 3: 5G NR Operations – part 1 (8 hours)
 5G NR – Initial acquisition challenges
o Coverage constraints in mm-wave
 Synchronization signal blocks – Why?
o Beamforming starting from Synch. Signals
o Differences with LTE and reasons
o Concept of SSBs
 Beamforming implications on synch. Signals
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 PBCH in 5G NR; MIB with minimum system information (MSI)
 PBCH details and use of PBCH contents for further processing
 PBCH in 5G vs. 4G
 SIBs handling in 5G
 PDCCH in 5G NR
o Concept of CORESETS; what is the advantage?
o Use of BWP ideas for RMSI reading
o Differences with LTE
o Channel structure in DL and UL; simpler than LTE?.
 RACH in 5G NR
o Mapping SSB to RACH Opportunities
o Use of Beamforming in the RACH procedure
o RACH differences between NSA and SA procedures
 RRC connection steps
Module 4: 5G NR Operations – part 2 (12 hours)
 Carrier bandwidth parts
o Concept and various ideas and advantages
o Configuration of BWPs
o DL and UL handling
o FDD vs. TDD Handling
 Data flow in DL and UL data channels
o Error control coding in 5G NR data channels
o HARQ in 5G NR; DL and UL aspects
o Concept of CBGs
o PUCCH in 5G NR
o Differences with LTE
 Reference signals in 5G NR
o DL and UL DMRS for data decoding
o CSI-RS on DL; configuration and possibilities
o PTRS and TRS ; new reference signals in 5G
o SRS on UL
 MIMO Operations in 5G NR
o Beam management procedure
o CSI-RS enhancements to support large number of antennas;
Type 1 and Type 2 feedback, why?.
o Single panel and multi-panel feedback measures
o Feedback differences between 5G NR and LTE
o Beam failure handling
 Typical Decoding flow for DL and UL channels
 Ultra-reliability and low latency handling in 5G NR
o Features useful to handle low latency
o Ultra-reliability- some initial procedures included in the
standard
o URLLC enhancements in R16 and beyond
 RRC Connection establishment steps
 RRC States in 5G NR and differences with LTE
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Handling Idle mode and paging
QoS handling in 5G
PDCP, RLC, and MAC differences between LTE and 5G NR
5G NR Data rate and Throughput results from 3GPP submissions
5G BWSIM; Goals, sample results and implementation aspects
Module 5: 5G RAN – Deployment, Building systems (4 hours)
 Initial steps in 5G NR in the presence of LTE network
o 5G Deployment; NSA and SA differences
 Why NSA?
 Options in NSA deployment
 Concept of MCG,SCG,and Split bearers
o LTE NR dual connectivity; EN-DC
 Initial steps in EN-DC scenario
o Data flow possibilities
 Options in splitting data through the 4G and 5G
networks
 5G RAN Implementation; Front haul and potential challenges
o ORAN overview- Why ORAN?..Motivation and potential
benefits
o Components of ORAN – ORU, ODU and CU
o Fronthaul implementation challenges and rate requirements
o Interfaces considered by 3GPP for disaggregated gNB; F1-C
and F1-U
o Most likely option to be used in products
o Impact on URLLC applications and considerations
 Mobility in 5G
 Future of 5G; standalone unlicensed band, V2X, improvements in
latency etc , Integrated access and backhaul
Add-on Support:
LMS support to same set of Participants –
1. Create access to all users for re-recording library access.
2. Duration: 2-3 months.
Evaluation:
1. QUIZ at each module
2. Assessment at the end of the chapter and course
3. Evaluation