5G Layers 1-3 with Emphasis on e-CPRI

5G Layers 1-3 with Emphasis on e-CPRI

5G Layers 1-3 with Emphasis on e-CPRI: Day 1

• 5G Radio: An Introduction
  • 5G Spectrum & Frequency Bands
  • Sub-6GHz, cmW, mmW
  • Spectrum Management & Spectrum Sharing
  • UE 5G NR Radio Requirements
  • 5G requirements for RAN: Bandwidth, power, spectral efficiency, new technology adaptation, latency, signaling load, capacity, coverage, interference, mobility
  • 5G requirements for Core: Network topology, cloud architectures, big data analytics
  • Base Station 5G NR Radio Requirements
  • Common UE and BS Radio Requirements
  • 5G NSA and SA architectures
  • 5G core and 5G-EPC brief overview
• 5G: New Radio (NR) Physical Layer
  • How 5G will differ from 4G
  • NR channel structure
  • Relation to LTE
  • NR time (slot) and frequency (SCS & RB) structure
  • The new concept of bandwidth part (BWP) and how it is configured/controlled by operator
  • Why flexible numerology?
  • The L1 processing chain
  • OFDM principles (basic introduction, FFT and signal generation)
  • OFDM signal processing (up sampling, decimation)
  • Modulation Schemes (256QAM, 64QAM, 16QAM, QPSK) and evolution from IQ modulator – IQ imbalance, phase errors, DC offset errors
  • L1 Time synchronization, frequency synchronization
  • L1 FEC and LDPC coding and decoding – analysis on decoding performance
  • Code Block Group (CBG) based retransmissions
  • L1 CRC coding and decoding – the BLER concept
  • L1 rate matching
  • The BBU modular architecture (ADC, DAC, Scheduler module, Link Adaptation module, Power control module, MIMO precoder module)
  • The mMIMO antenna panel modular RF chain structure (PA, LNA)
  • The RF traditional (Radio Remote Unite or RF card) chain modular structure (PA, LNA)
  • BBU calibration requirements
  • RRU calibration requirements
  • OFDM signal processing (up sampling, decimation)

5G Layers 1-3 with Emphasis on e-CPRI: Days 2-3

• 5G 3GPP Physical Layer Channels, Signals and Procedures
  • 3GPP Physical layer procedures for control signaling
  • Synchronization signals and reference signals structure
  • Cell search procedure
  • SS/PBCH structure
  • Random access preamble formats – initial beam establishment
  • Downlink control signaling
  • Uplink control signaling
  • Overview power control
  • Overview transmit timing control
  • 3GPP Physical procedures for user data transmissions
  • Reference signals (DMRS, CSI-RS, TRS, PTRS, SRS)
• 5G Layer 2 Procedures
  • Explain the L2 transport protocols SDAP, PDCP, RLC, MAC and GTP-U Protocols
  • Describe the contents of the SDAP, PDCP, RLC and MAC Packet Data Unit
  • Describe the SDAP functions in the user plane
  • Explain the PDCP functions
  • Explain the RLC functions
  • Explain RLC transparent, unacknowledged and acknowledged modes
  • Explain the MAC functions
  • MAC HARQ codebook principles
  • Scheduler functionality for UL and DL
  • Scheduler resource allocation (time-frequency grid)
  • How scheduler controls physical layer resources
  • RACH analysis
  • Scheduling requests, BSR, CQI/CSI reports
  • Beam management functions
  • P1, P2, P3 algorithm implementations
  • Explain the main functions & procedures of the transport protocol GTP-U
  • Traces and signaling examples

5G Layers 1-3 with Emphasis on e-CPRI: Days 3-4

• 5G Layer 3 Procedures
  • Explain the interaction between Radio Resource Control (RRC) and the lower layers in the control plane
  • Distinguish the RRC connected, inactive and idle UE states
  • Detail the functions and services of RRC
  • Explain the RRC signaling flow for SA service connectivity
  • Explain the RRC signaling flow for NSA service connectivity
  • Carrier aggregation
  • Emphasize on SIB contents and accessibility procedures
  • List the main functions and procedures of XnAP signaling protocol
  • List the main functions and procedures of NGAP signaling protocol
  • NAS signaling
  • NAS contents in MME/AMF
  • Paging procedure
  • Traces and signaling examples
• 5G Mobility
  • Explain Mobility and Dual Connectivity in 5G
  • Describe Inactive and Idle mode mobility in Standalone and Non-Standalone NR
  • SSB control and scheduling
  • UE synchronization
  • Detail the bearer type transitions (MN terminated MCG <-> SN terminated split DRB) in Non-Standalone NR
  • Describe the user plane control transitions
  • Explain Dual Connectivity mobility
  • Explain connected mode mobility in Standalone NR
  • Mobility analysis and examples

5G Layers 1-3 with Emphasis on e-CPRI: Day 5

• 5G MIMO – Beam forming
  • Massive MIMO general introduction
  • Beamforming and spatial multiplexing principles
  • MAC layer to mMIMO antenna panel interaction
  • Describe how scheduler schedule data on mMIMO antenna panel and the creation of the beams
  • MIMO/Beamforming modules
  • Codebook vs non-codebook transmissions
  • The new concept of Grid of Beams (GoB)
  • Analog vs. digital beamforming
  • e-CPRI standards and description

5G Layers 1-3 with Emphasis on e-CPRI : Course Wrap-up