pdf_gross.gif5G NSA: RAN & New Radio in first commercial networks

[2.5-day course, Euro 2,350.- (net) per participant]


Chapter 1: 5G in a Nutshell (1 – 2 h)

  • Timeline of 5G: NSA / SA / Phase 1 and Phase 2
  • General Network Topology for 5G: gNB-CU, gNB-DU, virtualization, network slicing, stand-alone vs. non-stand-alone, mMIMO
  • 5G-services: eMBB, URLLC and mMTC
  • EN-DC: Dual-Connectivity, Multi-Connectivity, EN-DC, NGEN-DC and NE-DC
  • NSA: Option 3x vs Option 3 and 3a, other Options
  • Network Architecture with NS
  • Main Changes in the Radio
  • Voice in 5G: VoNR, Vo5G

Chapter 2: Digging Deeper into NR (4 - 5 h)

  • Frequency Ranges: FR1 < 1 GHz, 1 GHz – 6 GHz, FR2 > 24.25 GHz Transmission bandwidth, FFT-size, subcarrier spacings, guard bands
  • Paving the way to the 5G NR:
    Reviewing OFDM-Properties with LTE / LTE-A: Radio frame, subframe and slot, TTI, cyclic prefix, achievable performance in LTE
  • Details of the different Numerologies:
    F-OFDM Confguration with Δf = 15 kHz
    From Δf = 15 kHz to Δf = 30 kHz, Δf = 60 kHz, Δf = 120 kHz and Δf = 240 kHz Summarizing the Numerologies
  • Frequency Bands and their Characteristics
    Example 1 < 1 GHz: Bands N5, N28: Channel Raster, GSCN, No of RB’s, max performance, etc.
    Example 2 < 6 GHz: Bands N78: Channel Raster, GSCN, No of RB’s, max performance, etc. Example 3 > 24.25 GHz: Bands N258, N260: Channel Raster, GSCN, No of RB’s, max performance
    Example 3 > 24.25 GHz: Bands N258, N260: Channel Raster, GSCN, No of RB’s, max performance
  • Frequency planning for 4G / 5G EN-DC operation in different parts of the world (APAC, EU, Americas)
  • Sweeping beams: mitigating the high attenuation of 3.X GHz (only introduction with animation, details in chapter 4)
  • 5G TDD-operation in 3.4 – 3.7 GHz (e.g. time sharing UL/DL) / Constraints of TDD-operation (e.g. network layout, receive transmit transition time, ...)
  • Operation in FR2: Propagation Models, typical deployment scenarios in UE and network
  • Concept of BWP
  • EN-DC Band Combinations: Intra-band contiguous, Intra-band non-contiguous, Inter-band EN-DC FR1, Inter-band EN-DC FR2, Inter-band EN-DC FR1+FR2, Inter-band FR1+FR2, each with examples and use cases
  • Slot Format and dynamic TDD: D / U / F-symbols, relationship between cell size, subcarrier spacing and number of F-slots
  • Channels & Signals with 5G NR:
    Logical Channels: BCCH, PCCH, CCCH, DCCH, DTCH
    Transport Channels: RACH, UL-SCH, BCH, PCH, DL-SCH
    Physical Channels: PBCH, PDCCH, PUSCH, PDSCH, PUCCH, PRACH Physical Signals: PSS & SSS, CSI-RS, DM-RS, PT-RS, SRS
    The Concept of Quasi-Collocation
  • The SS-Block (Synchronization Signal and PBCH-block) Time and frequency dimension, content, zoom in
  • New FEC: LDPC and Polar Codes: From Data Bits to Encoded Bits, Performance Comparison (BER vs SNR) for different FEC-technologies

Chapter 3: Operation (3 – 4 h)

  • Cell Search Procedure in 5G Stand-Alone:
    The Grid: Synchronization Signals and PBCH in LTE vs NR
    SS-Block: How to determine the time and frequency positions, repetitions, PointA, Constraints of the SS-Burst Set: No of SS-blocks, Case A-E, The Synchronization Raster or how to determine on which Frequencies to look for SS-Blocks
  • Differences in cell search between SA and NSA
  • Beamforming of SS-Blocks: Operation and Constraints, Dependency of number of beams with FR1 / FR2
  • Link budget in 5G
  • Reading and interpreting the Contents of the MIB
  • Resource Allocation in 5G
    From BWP to search spaces and CORESETs.
    DCI 0-0 – DCI 2-3: Meaning and tasks
  • Random Access procedure in 5G
    Msg1 – Msg 4
    Differences to 4G
  • Hybrid ARQ in 5G
    Downlink HARQ

    Uplink HARQ

Chapter 4: mMIMO (2 h)

  • Reviewing SISO, SIMO, MISO and MIMO
  • What is mMIMO?
  • Beamforming and Beam Sweeping and how they work
  • One-Dimensional Beamforming (horizontal) vs. Two-Dimensional Beamforming (horizontal + vertical)
  • Real-life antenna constructions for mMIMO
    Example 1: Real-Life Antennas with 2, 4 and 8 Antenna Ports Example 2: Real-Life Antennas with 16 Antenna Ports Example 3: Real-Life Antennas with 32 Antenna Ports Example 4: Real-Life Antennas with 64 Antenna Ports
  • Use Cases and Usefulness:
    => of different Antennas
    => of two-dimensional beamforming

Chapter 5: Architecture & Protocol Stacks (1 h)

  • 5G Network Architecture
  • User Equipment
  • NG-RAN
  • NGC
  • >More Details on the 5G RAN
    gNB-CU and Functional Split
    F1-Interface: F1-AP-protocol, SDAP-protocol
  • Functional Split inside gNB-DU through eCPRI eCPRI-Split Options
    ... and their pros and cons
    eCPRI protocol stack
  • Protocol Stacks Control Plane
    User Plane
    Protocol Stacks in Uu-, Xn- and N2/N3-interfaces
  • Details of the NGC
    Various network functions (e.g. AMF, UPF, SMF, NSSF, ...) Virtualization
    Network Slicing

Chapter 6: Higher Layer Operation (2 – 3 h)

  • Overview: The UE’s way in and out of 5G with NSA
  • Options: When to display 5G icon on the UE-display?
  • Detailed Analysis of Scenario SgNB-Addition
    => Part 1: Attachment to the MeNB
    => Part 2: UE Radio Access Capability Transfer (with 5G and MRDC-specifics) => Logfile Analysis: Extract of Containers: UE-NR-Capability and RF-Parameters => Logfile Analysis: Extract of Container: UE-MRDC-Capability
    => Logfile Analysis: RRC_CONN_RECONF with NSA-assistance information
    => Part 3: Measurement Report from the UE to indicate 5G cell
    => Part 4: SgNB Addition through RRC_CONN_RECONF
    => Logfile Analysis: RRC_CONN_RECONF
    => Part 5: Cell Activation<
  • Detailed Analysis of Scenario SgNB-Modification
  • Detailed Analysis of Scenario SgNB-Release