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NBIOT, RAN DU+CU HeNB, Procedures, Channels and Signals, Uu Protocol…
NBIOT
Network Domains
IMS
Location
LRF+GMLC+ESMLC+LMU
EWS
SCEF
ePDG
HeNB Gateway
HSS
MBMS GW
Interfaces
3GPP Interfaces
Core nw Interfaces
Location Interfaces
Early Warning Interfaces
IMS Interfaces
Charging/Billing Interfaces
MBMS Interfaces
RAN Interfaces
Uu
Uu
S1-U
S1-U Protocols
GTP-U
S1-C
F1-C
F1-U
CPRI/eCPRI
ORAN Interfaces
Splits
7
7.3
7.2
7.1
1
2
3
4
5
6
8
A1
E2
O1
O2
F1
E1
OFH
RAN
DU+CU
HeNB
Misc
NIDD
2536 bit TB size
MFBI - Multi Freq Band Indicator
NPDSCH HARQ disabling
Interlaced NPUSCH scheduling
RLC AM (acknowledged mode)
RLC UM (unacknowledged mode)
EDT (early data transmission)
Moobile terminated EDT
PUR (Preconfigured Uplink Resource)
SPS (Semi persistent scheduling)
EMM registered w/o PDN connectivity
Multiple DRB support
Congestion Management
RACH Traffic Control
New calls control
Access Barring
Access Class Barring (ACB)
Service-Specific Access Control (SSAC)
Cell Barring
Common Access Barring
PLMN Based Access Barring
Paging Traffic Control
Ongoing Traffic control
Handover Out (HO-OUT)
Handover In (HO-IN) (Inbound Handover) Traffic control
Location Traffic Control
Radio Resource Congestion (Air Interface Congestion)
Load Balancing: Distribute traffic across different cells/frequencies.
Admission Control: Prioritize critical services (e.g., URLLC over eMBB).
Dynamic Spectrum Sharing (DSS): Allocate spectrum dynamically between 4G and 5G.
Beamforming & MIMO: Improve spectral efficiency.
Traffic Offloading: Use Wi-Fi or small cells for offloading.
Transport Network Congestion (Fronthaul/Midhaul/Backhaul)
Enhanced Fronthaul (eCPRI): Reduce overhead compared to CPRI.
Packet Duplication & QoS Prioritization: Ensure critical traffic gets priority.
Edge Computing (MEC): Reduce backhaul load by processing data locally.
Network Slicing: Allocate dedicated slices for different services.
Processing Congestion (Compute Resource Limitation)
NTN
Satellite Ephemeris
EphemerisStateVectors (position velocity)
EphemerisOrbitalParameters (ECI and ECEF)
Rel-17
Doppler shift compensation
Extended Timing Advance (TA) range
Modified HARQ & RTT handling
Enhanced cell search & synchronization
Coverage Enhancement (CE) improvements
Idle mode mobility adaptations
GNSS-assisted UE timing
Rel-18
Improved power efficiency (DRX)
Reduced signaling overhead (RACH)
Enhanced mobility & beam management
Support for GEO/HAPS orbits
Coexistence with terrestrial NB-IoT
Rel-19
Further latency reduction
Advanced UE power saving
AI/ML-based mobility predictions
IoT-specific NTN optimizations
Integration with 5G RedCap/mMTC
Coverage features
UE Power Classes (36.101)
Class-3 (23 dBm) (200 mW) (MCL:164 dB) (Rel-13)
Class-5 (20 dBm) (100 mW) (MCL:164 dB) (Rel-13)
Class-6 (14 dBm) (25 mW) (MCL:155 dB) (Rel-14)
Coverage Enhancements (36.133)
CE-1 (MCL≈ 154 dB )
(DL rep=4-64; UL Rep=4-64)
CE-2 (MCL≈ 164 dB )
(DL rep=64-512; UL Rep=64-512)
CE-0 (MCL≈ 144 dB )
(DL rep=1-4; UL Rep=1-4)
CE-3 (MCL) (DL rep=?; UL rep=?)
Coverage Extensions (not applicable to NBIOT ?)
Mode B
Mode A
Multi Operator
MO CN
MO RAN
CN Sharing
Observability
Traces
UE trace
Cell trace
Counters & KPIs
Alarms
UE Category (36.306)
Cat-NB1
Cat-NB2
Power Management
UE power saving
DRX - Idle mode
DRX - Connected Mode
eDRX - Idle mode
WUS
EDT
CP-EDT
PSM
RAN power saving
Core
Control Plane optimization
User plane optimization
Mobility Management
Idle Mode Mobility
Inter Frequency Reselection
Intra Frequency Reselection
Inter RAT
Connected Mode Mobility
Intra Frequency
Inter Frequency
Inter RAT
High speed
LBS
Positioning
CID
eCID
R14
OTDOA (NPRS based)
R14
SC-PTM
Capacity features
Multi Carrier
Non-Anchor carrier
Anchor Carrier
5MHz - 2,7,17,22
10MHz - 4, 9, 14, 19, 30, 35, 40, 45
15MHz - 2, 7, 12, 17, 22, 27, 32, 42, 47, 52, 57, 62, 67, 72
20MHz-4, 9, 14, 19, 24, 29, 34, 39, 44, 55, 60, 65, 70, 75, 80, 85, 90, 95
3MHz - 2,12
ORAN
Sync
C1
C2
C3
Security
Battery Efficient Security for Low Throughput(BEST)
Broadcast & Multicast
MBMS
DL Multicast
AI/ML
RIC
NBIOT over NR
Resource Spread Multiple Access (RSMA) for IoT use cases requiring asynchronous and grant-less access, multi-hop mesh
Messaging features
SMS
SMS without attach
System Architecture
Timing & Synchroization
non 3GPP & non ORAN
OAM
Performance features
Throughput features
DTMF (dual-tone multi-frequency)
Procedures
PDCP Procedures
PDCP Data Transfer Procedures
UL Data Transfer Procedures
DL Data Transfer Procedures
Procedures for DRBs
Procedures for DRBs mapped on RLC AM when the reordering function is not
used
RN procedures for DRBs mapped on RLC AM
Procedures for DRBs mapped on RLC UM when the reordering function is not
used
RN procedures for DRBs mapped on RLC UM
Procedures for DRBs mapped on RLC AM or RLC UM, for LWA bearers and
SLRB when the reordering function is used
Procedures when a PDCP PDU is received from the lower layers
Procedures when t-Reordering expires
Procedures when the value of t-Reordering is reconfigured
Procedures for SRBs
Procedures for SRBs when the reordering function is not used
Procedures for SRBs when the reordering function is used
SL Data Transmission Procedures
SL Data Reception Procedures
Re-establishment procedure
PDCP Status Report
PDCP discard
Robust Header Compression and Decompression
Ciphering and Deciphering
Integrity Protection and Verification
Handling of unknown, unforeseen and erroneous protocol data
PDCP Data Recovery procedure
Status report for LWA
Uplink Data compression and decompression
Uplink data switching
PDCP Reconfiguration
Ethernet header compression and decompression
Attach Procedure
Normal Attach
Attach without PDN connectivity
SMS transfer without combined attach
Cell Reselection
Intra-frequency
Inter-frequency
Inter-RAT
NAS Procedures
RRC procedures
RLC Procedures
MAC Procedures
Phy Procedures
Channels and Signals
Signals
36.211
UL
DMRS
DL
NPSS
NSSS
NRS
NPRS
DCI
Format N0
(UL Grant (NPUSCH Scheduling))
Format N1
(DL Scheduling (NPDSCH Scheduling)
RACH initiated by PDCCH Order)
Format N2
(Paging and direct indication)
Physical Channels
UL
NPRACH
36.211 -> 10.1.6
FDD (frame structure type 1)
Preamble format 0
Preamble format 1
Preamble format 2
TDD (frame structure type 2)
Preamble format 0
Preamble format 1
Preamble format 2
Preamble format 0-a
Preamble format 1-a
NPUSCH
15 KHz SCS
multi tone
3 tone
6 tone
12 tone
single tone
3.75 KHz SCS
single tone
:red_cross: multi tone :red_cross:
FDD (frame structure type 1)
36.211 -> 10.1.2.3
Format 1 (to carry UL-SCH )
Format 2 (to carry uplink control information)
TDD (frame structure type 2)
Format 1
Format 2
DL
NPDCCH
Type 1
format 0 - schedule 2 UEs per TTI
format 1 - schedule 1 UE per TTI
NPBCH
NPDSCH
DCI Format N1
Logical Chanels
DL
CCCH -
DCCH -
DTCH -
UL
BCCH -
PCCH -
CCCH -
DCCH -
DTCH -
SC-MCCH
SC-MTCH
Transport Channels
DL
RACH
UL-SCH
UL
PCH
BCH
DL-SCH
Radio Bearers
Signalling Radio Bearer (SRB)
SRB-0
SRB-1bis
SRB-1
Data Radio Bearer (DRB)
DRB-0
DRB-1
Uu Protocol Layers
Air Interface / Phy
36.201
36.202
36.211
36.212
36.213
36.214
36.215
37.213
Transmission Schemes
UL
SC-FDMA
DL
OFDMA
Deployment Modes
Inband
Guardband
Standalone
Frame Structure (Duplex Mode)
36.211 -> 10.0.1
FDD (Type-1)
Half Duplex
Full Duplex
TDD (Type-2)
Host Carrier bw
NR Inband
LTE Guardband
5 MHz
10 MHz
15 MHz
20 MHz
NR Guardband
LTE Inband
5 MHz
10 MHz
15 MHz
20 MHz
3 MHz
Bands (36.101)
LTE Bands
FDD
1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 24, 25, 26, 28, 31,,,,,,65, 66, 70, 71, 72, 73, 74, 85, 87, 88, and 103
TDD
41, 42, 43, 48,
NR Bands
FDD
n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n26, n28, n41, ,,,,,,n65, n66, n70, n71, n74, n90.
TDD
Satellite/NTN bands
FDD
n255, n256
TDD
Physical Cell ID (PCI)
Same PCI (Inband/Guardband)
Different PCI (Inband/Guardband)
HARQ
Transmission gap
UL transmission gap
DL transmission gap
Raster
EARFCN
100 KHz
Air Interface UE Procedures for NB-IoT
(36.213->16)
Synchronization procedures
Cell search
Timing synchronization
Power control
Uplink power control
Narrowband physical uplink shared channel
UE behaviour
Power headroom
SR
UE behaviour
Downlink power allocation
Random access procedure
Physical non-synchronized random access procedure
Timing
Narrowband random access response grant
CBRA (Contention based Random Access)
CFRA (Contention Free Random Access)
Narrowband physical downlink shared channel related procedures
UE procedure for receiving the narrowband physical downlink shared channel
Single-antenna port scheme
Transmit diversity scheme
Resource allocation
NPDSCH starting position
Modulation order and transport block size determination
Transport blocks not mapped for SystemInformationBlockType1-NB
Transport blocks mapped for SystemInformationBlockType1-NB
UE procedure for reporting ACK/NACK
Narrowband physical uplink shared channel related procedures
UE procedure for transmitting format 1 narrowband physical uplink shared channel
Resource allocation
Modulation order, redundancy version and transport block size determination
UE procedure for NPUSCH retransmission
UE procedure for transmitting SR
Narrowband physical downlink control channel related procedures
NPDCCH starting position
NPDCCH control information procedure
NPDCCH validation for semi-persistent scheduling
Preconfigured uplink resource ACK/fallback procedure
UE procedure for acquiring cell-specific reference signal sequence and raster offset
UE procedure for receiving narrowband wake up signal
Power boost (upto 6dB)
36.802 -> 7.1.3.1
Modulation
DL
QPSK
UL
QPSK, BPSK
(phase rotated modulations (e.g π/2-BPSK and π/4-QPSK) to reduce peak-to-average power ratio in the uplink)
RRC
(36.331)
System Information Blocks (SIBs)
(36.331 Section 6.7.3)
SIB-1-NB (R13)
Cell access, scheduling of other SIBs
MIB-MBMS (R13)
MIB-TDD-NB (R13)
SIB-2-NB (R13)
radio resource configuration information
SIB-3-NB (R13)
Cell reselction info - common for Intra-freq & Inter-freq
SIB-4-NB (R13)
intrafrequency cell re-selection
SIB-5-NB (R13)
inter-frequency cell re-selection
SIB-14-NB (R13)
Access class barring (ACB)
SIB-15-NB (R13)
MBMS Service Area Identities (SAI)
SIB-16-NB (R13)
GPS, UTC
SIB-20-NB (R14)
MBMS using SC-PTM
SIB-22-NB (R14)
radio resource configuration for paging and random access procedure on non-anchor carriers.
SIB-23-NB (R15)
radio resource configuration for NPRACH resources using preamble format 2 on non-anchor carriers
SIB-27-NB (R16)
Inter RAT cell selection. EUTRAN, GERAN
SIB-31-NB (NTN) (R17)
satellite assistance information
SIB-32-NB (NTN) (R17)
satellite assistance information for prediction of discontinuous coverage
MIB-NB (R13)
system information transmitted on BCH in FDD
SIB-33 NB (NTN) (R18)
satellite assistance information for neighbour cells
NB-IoT IEs (36.331 section 6.7.3)
NB-IoT RRC IEs (36.331 section 6.7.3.2)
CarrierConfigDedicated-NB
CarrierFreq-NB
ChannelRasterOffset-NB
DL-Bitmap-NB
DL-CarrierConfigCommon-NB
DL-GapConfig-NB
GWUS-Config-NB
LogicalChannelConfig-NB
MAC-MainConfig-NB
NPDCCH-ConfigDedicated-NB
NPDSCH-Config-NB
NPRACH-ConfigSIB-NB
NPUSCH-Config-NB
PDCP-Config-NB
PhysicalConfigDedicated-NB
PURConfigNB
PURConfigIDNB
PURPeriodicityAndOffsetNB
RACHConfigCommonNB
RadioResourceConfigCommonSIBNB
RadioResourceConfigDedicatedNB
ResourceReservationConfigNB
RLCConfigNB
RLFTimersAndConstantsNB
SchedulingRequestConfigNB
TDDConfigNB
TDDULDLAlignmentOffsetNB
UplinkPowerControlNB
WUSConfigNB
NB-IoT Security control information elements (36.331 section 6.7.3.3)
NB-IoT Mobility control IEs (36.331 section 6.7.3.4)
AdditionalBandInfoList-NB
FreqBandIndicator-NB
MultiBandInfoList-NB
NS-PmaxList-NB
ReselectionThreshold-NB
T-Reselection-NB
NB-IoT Measurement IEs (36.331 section 6.7.3.5)
ANR-MeasConfig-NB
ANR-MeasReport-NB
CQI-NPDCCH-NB
CQI-NPDCCH-Short-NB
MeasResultServCell-NB
NRSRP-Range-NB
NRSRQ-Range-NB
NSSS-RRM-Config-NB
NB-IoT Other IEs (36.331 section 6.7.3.6)
EstablishmentCause-NB
UE-RadioPagingInfo-NB
UE-TimersAndConstants-NB
UE-Capability-NB
NB-IoT MBMS IEs (36.331 section 6.7.3.7)
NB-IoT SC-PTM IEs (36.331 section 6.7.3.7a)
SC-MTCH-InfoList-NB
SCPTM-NeighbourCellList-NB
NB-IoT Message definitions
DLInformationTransfer-NB
MasterInformationBlock-NB
MasterInformationBlock-TDD-NB
Paging-NB
PURConfigurationRequest-NB
RRCConnectionReconfiguration-NB
RRCConnectionReconfigurationComplete-NB
RRCConnectionReestablishment-NB
RRCConnectionReestablishmentComplete-NB
RRCConnectionReestablishmentRequest-NB
RRCConnectionReject-NB
RRCConnectionRelease-NB
RRCConnectionRequest-NB
RRCConnectionResume-NB
RRCConnectionResumeComplete-NB
RRCConnectionResumeRequest-NB
RRCConnectionSetup-NB
RRCConnectionSetupComplete-NB
RRCEarlyDataComplete-NB
RRCEarlyDataRequest-NB
SCPTMConfiguration-NB
SystemInformation-NB
SystemInformationBlockType1-NB
UECapabilityEnquiry-NB
UECapabilityInformation-NB
UEInformationRequest-NB
UEInformationResponse-NB
ULInformationTransfer-NB
Modes of Operation
IDLE
PLMN Selection
Cell Selection
Cell reselection
Intra Freq Reselection
Inter Freq reselection
Suitable cell
CONNECTED
Paging
eNodeB Identities
RA-RNTI
Temporary C-RNTI
C-RNTI
P-RNTI
SI-RNTI
SC-RNTI
G-RNTI
ResumeID
IMSI:
S-TMSI
RRC Procedures
PDCP
(36.323)
SDU 1600 octets (for LTE: 8188 octets)
Control PDU 1600 octets (for LTE: 8188 octets)
Services
Services to upper layers
Integrity Protection
Transfer User plane data
Transfer Control plane data
Header compression
ROHC (RObust Header Compression) (RFC 3095)
EHC (Ethernet Header Compression)
IP header compression (RFC 2507)
Ciphering
uplink data compression
Services expected from lower layers
acknowledged data transfer service
unacknowledged data transfer service
in-sequence delivery, except at re-establishment of lower layers
duplicate discarding, except at re-establishment of lower layers
Protocol data units, formats, parameters
Protocol data units
PDCP Control PDU
PDCP Data PDU
Formats
Parameters
Functions
MAC
(36.321)
Scheduler
No of UEs per TTI
2
1
MAC Procedures
TBS
Transport Block Size
36.213
DL
680 bits - R13
2536 bits - R14
4968 bits - R18
NPUSCH
1000 bits - R13
2536 bits - R14
2536 bits - R18
iTBS
R13 - 12
R14 - 13
R18 - 21
RLC
(36.322)
NAS
(24.301)
UE
UE-Capability-NB
36.331
EEA
EEA1
EEA2
EEA3
EEA4
EEA5
EEA6
EEA7
EEA0
EIA
0
1
2
3
4
5
6
7
UEA
0
1
2
3
4
5
6
7
UCS2
UIA
(UMTS Integrity Algo)
0
1
2
3
4
5
6
7
ProSe direct discovery
ProSe
H.245 after SRVCC handover
Access class control for CSFB
LTE positioning Protocol
Location services (LCS) Notification mechanisms
SRVCC from E-UTRAN to cdma2000 1xCS
Notification procedure
Extended protocol configuration options
Header compression for control plane CIoT EPS optimization
EMM-REGISTERED w/o PDN connectivity
S1-U data transfer
User plane CIoT EPS optimization
Control plane CIoT EPS optimization
ProSe UE-to-network relay
ProSe direct communication
Signalling for a maximum number of 15 EPS bearer contexts
Service gap control
N1 mode
Dual connectivity with NR
Control plane data backoff
Restriction on use of enhanced coverage
V2X communication over PC5
Multiple DRB
UE Category
36.306
36.331
Cat-NB2
Cat-NB1
link to prezi.com
CIOT core
MME+SGW+PGW
