558 lines
22 KiB
Markdown
558 lines
22 KiB
Markdown
**Table of Contents**
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1. [Functional Split Architecture](#functional-split-architecture)
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2. [OpenAirInterface Block Diagram](#openairinterface-block-diagram)
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2. [OpenAirInterface 4G-LTE eNB Feature Set](#openairinterface-4g-lte-enb-feature-set)
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1. [eNB PHY Layer](#enb-phy-layer)
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2. [eNB MAC Layer](#enb-mac-layer)
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3. [eNB RLC Layer](#enb-rlc-layer)
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4. [eNB PDCP Layer](#enb-pdcp-layer)
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5. [eNB RRC Layer](#enb-rrc-layer)
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6. [eNB X2AP](#enb-x2ap)
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7. [eNB/MCE M2AP](#enbmce-m2ap)
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8. [MCE/MME M3AP](#mcemme-m3ap)
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3. [OpenAirInterface 4G-LTE UE Feature Set](#openairinterface-4g-lte-ue-feature-set)
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1. [LTE UE PHY Layer](#lte-ue-phy-layer)
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2. [LTE UE MAC Layer](#lte-ue-mac-layer)
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3. [LTE UE RLC Layer](#lte-ue-rlc-layer)
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4. [LTE UE PDCP Layer](#lte-ue-pdcp-layer)
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5. [LTE UE RRC Layer](#lte-ue-rrc-layer)
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4. [OpenAirInterface 5G-NR gNB Feature Set](#openairinterface-5g-nr-feature-set)
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1. [General Parameters](#general-parameters)
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2. [gNB Physical Layer](#gnb-phy-layer)
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3. [gNB Higher Layers](#gnb-higher-layers)
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5. [OpenAirInterface 5G-NR UE Feature Set](#openairinterface-5g-nr-ue-feature-set)
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1. [UE Physical Layer](#ue-phy-layer)
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2. [UE Higher Layers](#ue-higher-layers)
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# Functional Split Architecture #
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- RCC: Radio-Cloud Center
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- RAU: Radio-Access Unit
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- RRU: Remote Radio-Unit
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- IF4.5 / IF5 : similar to IEEE P1914.1
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- FAPI (IF2) : specified by Small Cell Forum (open-nFAPI implementation)
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- IF1 : F1 in 3GPP Release 15
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# OpenAirInterface Block Diagram #
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# OpenAirInterface 4G LTE eNB Feature Set #
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## eNB PHY Layer ##
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The Physical layer implements **3GPP 36.211**, **36.212**, **36.213** and provides the following features:
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- LTE release 8.6 compliant, and implements a subset of release 10
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- FDD and TDD configurations: 1 (experimental) and 3
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- Bandwidth: 5, 10, and 20 MHz
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- Transmission modes: 1, 2 (stable), 3, 4, 5, 6, 7 (experimental)
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- Max number of antennas: 2
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- CQI/PMI reporting: aperiodic, feedback mode 3 - 0 and 3 - 1
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- PRACH preamble format 0
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- Downlink (DL) channels are supported: PSS, SSS, PBCH, PCFICH, PHICH, PDCCH, PDSCH, PMCH, MPDCCH
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- Uplink (UL) channels are supported: PRACH, PUSCH, PUCCH (format 1/1a/1b), SRS, DRS
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- HARQ support (UL and DL)
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- Highly optimized base band processing (including turbo decoder)
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- Multi-RRU support: over the air synchro b/ multi RRU in TDD mode
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- Support for CE-modeA for LTE-M. Limited support for repeatition, single-LTE-M connection, legacy-LTE UE attach is disabled.
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### Performances ###
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**Transmission Mode, Bandwidth** | **Expected Throughput** | **Measured Throughput** | **Measurement Conditions**
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-------------------------------- | ----------------------- | ------------------------| ----------------:
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FDD DL: 5 MHz, 25 PRBS/ MCS 28 | 16 - 17 Mbit/s | TM1: 17.0 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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FDD DL: 10 MHz, 50 PRBS/ MCS 28 | 34 - 35 Mbit/s | TM1: 34.0 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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FDD DL: 20 MHz, 100 PRBS/ MCS 28 | 70 Mbit/s | TM1: 69.9 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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FDD UL: 5 MHz, 25 PRBS/ MCS 20 | 9 Mbit/s | TM1: 8.28 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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FDD UL: 10 MHz, 50 PRBS/ MCS 20 | 17 Mbit/s | TM1: 18.3 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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FDD UL: 20 MHz, 100 PRBS/ MCS 20 | 35 Mbit/s | TM1: 18.6 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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TDD DL: 5 MHz, 25 PRBS/ MCS **XX** | 6.5 Mbit/s | TM1: 6.71 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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TDD DL: 10 MHz, 50 PRBS/ MCS **XX** | 13.5 Mbit/s | TM1: 13.6 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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TDD DL: 20 MHz, 100 PRBS/ MCS **XX** | 28.0 Mbit/s | TM1: 27.2 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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TDD UL: 5 MHz, 25 PRBS/ MCS **XX** | 2.0 Mbit/s | TM1: 3.31 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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TDD UL: 10 MHz, 50 PRBS/ MCS **XX** | 2.0 Mbit/s | TM1: 7.25 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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TDD UL: 20 MHz, 100 PRBS/ MCS **XX** | 3.0 Mbit/s | TM1: 4.21 Mbits/s | COTS-UE Cat 4 (150/50 Mbps)
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### Number of supported UEs ###
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* 16 by default
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* up to 256 when compiling with dedicated compile flag
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* was tested with 40 COTS-UE
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## eNB MAC Layer ##
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The MAC layer implements a subset of the **3GPP 36.321** release v8.6 in support of BCH, DLSCH, RACH, and ULSCH channels.
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- RRC interface for CCCH, DCCH, and DTCH
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- Proportional fair scheduler (round robin scheduler soon), with the following improvements:
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- Up to 30 users tested in the L2 simulator, CCE allocation in the preprocessor ; the scheduler was also simplified and made more modular
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- Adaptative UL-HARQ
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- Remove out-of-sync UEs
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- No use of the `first_rb` in the UL scheduler ; respects `vrb_map_UL` and `vrb_map` in the DL
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- DCI generation
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- HARQ Support
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- RA procedures and RNTI management
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- RLC interface (AM, UM)
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- UL power control
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- Link adaptation
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- Connected DRX (CDRX) support for FDD LTE UE. Compatible with R13 from 3GPP. Support for Cat-M1 UE comming soon.
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## eNB RLC Layer ##
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The RLC layer implements a full specification of the 3GPP 36.322 release v9.3.
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- RLC TM (mainly used for BCCH and CCCH)
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* Neither segment nor concatenate RLC SDUs
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* Do not include a RLC header in the RLC PDU
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* Delivery of received RLC PDUs to upper layers
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- RLC UM (mainly used for DTCH)
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* Segment or concatenate RLC SDUs according to the TB size selected by MAC
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* Include a RLC header in the RLC PDU
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* Duplication detection
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* PDU reordering and reassembly
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- RLC AM, compatible with 9.3
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* Segmentation, re-segmentation, concatenation, and reassembly
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* Padding
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* Data transfer to the user
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* RLC PDU retransmission in support of error control and correction
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* Generation of data/control PDUs
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## eNB PDCP Layer ##
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The current PDCP layer is header compliant with **3GPP 36.323** Rel 10.1.0 and implements the following functions:
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- User and control data transfer
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- Sequence number management
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- RB association with PDCP entity
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- PDCP entity association with one or two RLC entities
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- Integrity check and encryption using the AES and Snow3G algorithms
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## eNB RRC Layer ##
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The RRC layer is based on **3GPP 36.331** v15.6 and implements the following functions:
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- System Information broadcast (SIB 1, 2, 3, and 13)
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* SIB1: Up to 6 PLMN IDs broadcast
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- RRC connection establishment
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- RRC connection reconfiguration (addition and removal of radio bearers, connection release)
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- RRC connection release
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- RRC connection re-establishment
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- Inter-frequency measurement collection and reporting (experimental)
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- eMBMS for multicast and broadcast (experimental)
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- Handover (experimental)
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- Paging (soon)
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- RRC inactivity timer (release of UE after a period of data inactivity)
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## eNB X2AP ##
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The X2AP layer is based on **3GPP 36.423** v14.6.0 and implements the following functions:
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- X2 Setup Request
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- X2 Setup Response
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- X2 Setup Failure
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- Handover Request
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- Handover Request Acknowledge
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- UE Context Release
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- X2 timers (t_reloc_prep, tx2_reloc_overall)
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- Handover Cancel
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- X2-U interface implemented
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- EN-DC is implemented
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- X2AP : Handling of SgNB Addition Request / Addition Request Acknowledge / Reconfiguration Complete
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- RRC : Handling of RRC Connection Reconfiguration with 5G cell info, configuration of 5G-NR measurements
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- S1AP : Handling of E-RAB Modification Indication / Confirmation
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## eNB/MCE M2AP ##
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The M2AP layer is based on **3GPP 36.443** v14.0.1:
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- M2 Setup Request
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- M2 Setup Response
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- M2 Setup Failure
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- M2 Scheduling Information
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- M2 Scheduling Information Response
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- M2 Session Start Request
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- M2 Session Start Response
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## MCE/MME M3AP ##
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The M3AP layer is based on **3GPP 36.444** v14.0.1:
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- M3 Setup Request
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- M3 Setup Response
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- M3 Setup Failure
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- M3 Session Start Request
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- M3 Session Start Response
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# OpenAirInterface 4G LTE UE Feature Set #
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## LTE UE PHY Layer ##
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The Physical layer implements **3GPP 36.211**, **36.212**, **36.213** and provides the following features:
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- LTE release 8.6 compliant, and implements a subset of release 10
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- FDD and TDD configurations: 1 (experimental) and 3
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- Bandwidth: 5, 10, and 20 MHz
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- Transmission modes: 1, 2 (stable)
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- Max number of antennas: 2
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- CQI/PMI reporting: aperiodic, feedback mode 3 - 0 and 3 - 1
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- PRACH preamble format 0
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- All downlink (DL) channels are supported: PSS, SSS, PBCH, PCFICH, PHICH, PDCCH, PDSCH, PMCH
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- All uplink (UL) channels are supported: PRACH, PUSCH, PUCCH (format 1/1a/1b), SRS, DRS
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- LTE MBMS-dedicated cell (feMBMS) procedures subset for LTE release 14 (experimental)
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- LTE non-MBSFN subframe (feMBMS) Carrier Adquistion Subframe-CAS procedures (PSS/SSS/PBCH/PDSH) (experimental)
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- LTE MBSFN MBSFN subframe channel (feMBMS): PMCH (CS@1.25KHz) (channel estimation for 25MHz bandwidth) (experimental)
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## LTE UE MAC Layer ##
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The MAC layer implements a subset of the **3GPP 36.321** release v8.6 in support of BCH, DLSCH, RACH, and ULSCH channels.
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- RRC interface for CCCH, DCCH, and DTCH
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- HARQ Support
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- RA procedures and RNTI management
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- RLC interface (AM, UM)
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- UL power control
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- Link adaptation
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- MBMS-dedicated cell (feMBMS) RRC interface for BCCH
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- eMBMS and MBMS-dedicated cell (feMBMS) RRC interface for MCCH, MTCH
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## LTE UE RLC Layer ##
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The RLC layer implements a full specification of the 3GPP 36.322 release v9.3.
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## LTE UE PDCP Layer ##
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The current PDCP layer is header compliant with **3GPP 36.323** Rel 10.1.0.
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## LTE UE RRC Layer ##
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The RRC layer is based on **3GPP 36.331** v14.3.0 and implements the following functions:
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- System Information decoding
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- RRC connection establishment
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- MBMS-dedicated cell (feMBMS) SI-MBMS/SIB1-MBMS management
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## LTE UE NAS Layer ##
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The NAS layer is based on **3GPP 24.301** and implements the following functions:
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- EMM attach/detach, authentication, tracking area update, and more
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- ESM default/dedicated bearer, PDN connectivity, and more
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# OpenAirInterface 5G-NR Feature Set #
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## General Parameters ##
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The following features are valid for the gNB and the 5G-NR UE.
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* Static TDD,
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* FDD
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* Normal CP
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* 30 kHz subcarrier spacing
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* Bandwidths: 10, 20, 40, 80, 100MHz (273 Physical Resource Blocks)
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* Intermediate downlink and uplink frequencies to interface with IF equipment
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* Single antenna port (single beam)
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* Slot format: 14 OFDM symbols in UL or DL
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* Highly efficient 3GPP compliant LDPC encoder and decoder (BG1 and BG2 supported)
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* Highly efficient 3GPP compliant polar encoder and decoder
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* Encoder and decoder for short blocks
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* Support for UL transform precoding (SC-FDMA)
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## gNB PHY Layer ##
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* 30KHz SCS for FR1 and 120 KHz SCS for FR2
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* Generation of NR-PSS/NR-SSS
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* NR-PBCH supports multiple SSBs and flexible periodicity
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* Generation of NR-PDCCH (including generation of DCI, polar encoding, scrambling, modulation, RB mapping, etc)
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- common search space
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- user-specific search space
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- DCI formats: 00, 10, 01 and 11
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* Generation of NR-PDSCH (including Segmentation, LDPC encoding, rate matching, scrambling, modulation, RB mapping, etc).
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- PDSCH mapping type A and B
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- DMRS configuration type 1 and 2
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- Single and multiple DMRS symbols
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- PTRS support
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- Support for 1, 2 and 4 TX antennas
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- Support for up to 2 layers (currently limited to DMRS configuration type 2)
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* NR-CSIRS Generation of sequence at PHY
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* NR-PUSCH (including Segmentation, LDPC encoding, rate matching, scrambling, modulation, RB mapping, etc).
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- PUSCH mapping type A and B
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- DMRS configuration type 1 and 2
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- Single and multiple DMRS symbols
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- PTRS support
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- Support for 1 RX antenna
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- Support for 1 layer
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* NR-PUCCH
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- Format 0 (2 bits, for ACK/NACK and SR)
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- Format 2 (up to 11 bits, mainly for CSI feedback)
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* NR-SRS
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- SRS signal reception
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- Channel estimation (with T tracer real time monitoring)
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- Power noise estimation
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* NR-PRACH
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- Formats 0,1,2,3, A1-A3, B1-B3
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* Highly efficient 3GPP compliant LDPC encoder and decoder (BG1 and BG2 are supported)
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* Highly efficient 3GPP compliant polar encoder and decoder
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* Encoder and decoder for short block
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## gNB Higher Layers ##
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**gNB MAC**
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- MAC -> PHY configuration using NR FAPI P5 interface
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- MAC <-> PHY data interface using FAPI P7 interface for BCH PDU, DCI PDU, PDSCH PDU
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- Scheduler procedures for SIB1
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- Scheduler procedures for RA
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- Contention Free RA procedure
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- Contention Based RA procedure
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- Msg3 can transfer uplink CCCH, DTCH or DCCH messages
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- CBRA can be performed using MAC CE or C-RNTI
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- Scheduler procedures for CSI-RS
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- MAC downlink scheduler
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- phy-test scheduler (fixed allocation and usable also without UE)
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- regular scheduler with dynamic allocation
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- MCS adaptation from HARQ BLER
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- MAC header generation (including timing advance)
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- ACK / NACK handling and HARQ procedures for downlink
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- MAC uplink scheduler
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- phy-test scheduler (fixed allocation)
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- regular scheduler with dynamic allocation
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- HARQ procedures for uplink
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- Scheduler procedures for SRS reception
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- Periodic SRS reception
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- MAC procedures to handle CSI measurement report
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- evalution of RSRP report
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- evaluation of CQI report
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- MAC scheduling of SR reception
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- Bandwidth part (BWP) operation
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- Handle multiple dedicated BWPs
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- BWP switching through RRCReconfiguration method
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**gNB RLC**
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- Send/Receive operations according to 38.322 Rel.16
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- Segmentation and reassembly procedures
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- RLC Acknowledged mode supporting PDU retransmissions
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- RLC Unacknowledged mode
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- DRBs and SRBs establishment/handling and association with RLC entities
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- Timers implementation
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- Interfaces with PDCP, MAC
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- Interfaces with gtp-u (data Tx/Rx over F1-U at the DU)
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**gNB PDCP**
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- Send/Receive operations according to 38.323 Rel.16
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- Integrity protection and ciphering procedures
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- Sequence number management, SDU dicard and in-order delivery
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- Radio bearer establishment/handling and association with PDCP entities
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- Interfaces with RRC, RLC
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- Interfaces with gtp-u (data Tx/Rx over N3 and F1-U interfaces)
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**gNB SDAP**
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- Send/Receive operations according to 37.324 Rel.15
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- Establishment/Handling of SDAP entities.
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- Transfer of User Plane Data
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- Mapping between a QoS flow and a DRB for both DL and UL
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- Marking QoS flow ID in both DL and UL packets
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- Reflective QoS flow to DRB mapping for UL SDAP data PDUs
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**gNB RRC**
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- NR RRC (38.331) Rel 16 messages using new asn1c
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- LTE RRC (36.331) also updated to Rel 15
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- Generation of CellGroupConfig (for eNB) and MIB
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- Generation of system information block 1 (SIB1)
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- Generation of system information block 2 (SIB2)
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- Application to read configuration file and program gNB RRC
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- RRC can configure PDCP, RLC, MAC
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- Interface with gtp-u (tunnel creation/handling for S1-U (NSA), N3 (SA) interfaces)
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- Integration of RRC messages and procedures supporting UE 5G SA connection
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- RRCSetupRequest/RRCSetup/RRCSetupComplete
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- RRC Uplink/Downlink Information transfer carrying NAS messages transparently
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- RRC Reconfiguration/Reconfiguration complete
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- Support for master cell group configuration
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- Interface with NGAP for the interactions with the AMF
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- Interface with F1AP for CU/DU split deployment option
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**gNB X2AP**
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- Integration of X2AP messages and procedures for the exchanges with the eNB over X2 interface supporting the NSA setup according to 36.423 Rel. 15
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- X2 setup with eNB
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- Handling of SgNB Addition Request / Addition Request Acknowledge / Reconfiguration Complete
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**gNB NGAP**
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- Integration of NGAP messages and procedures for the exchanges with the AMF over N2 interface according to 38.413 Rel. 15
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- NGAP Setup request/response
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- NGAP Initial UE message
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- NGAP Initial context setup request/response
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- NGAP Downlink/Uplink NAS transfer
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- NGAP UE context release request/complete
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- NGAP UE radio capability info indication
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- NGAP PDU session resource setup request/response
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- Interface with RRC
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**gNB F1AP**
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- Integration of F1AP messages and procedures for the control plane exchanges between the CU and DU entities according to 38.473 Rel. 16
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- F1 Setup request/response
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- F1 DL/UL RRC message transfer
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- F1 Initial UL RRC message transfer
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- F1 UE Context setup request/response
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- F1 gNB CU configuration update
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- Interface with RRC
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- Interface with gtp-u (tunnel creation/handling for F1-U interface)
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**gNB GTP-U**
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- New gtp-u implementation supporting both N3 and F1-U interfaces according to 29.281 Rel.15
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- Interfaces with RRC, F1AP for tunnel creation
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- Interfaces with PDCP and RLC for data send/receive at the CU and DU respectively (F1-U interface)
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- Interface with SDAP for data send/receive, capture of GTP-U Optional Header, GTP-U Extension Header and PDU Session Container.
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# OpenAirInterface 5G-NR UE Feature Set #
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* Supporting "noS1" mode (DL and UL):
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- Creates TUN interface to PDCP to inject and receive user-place traffic
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- No connection to the core network
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* Supporting Standalone (SA) mode:
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- UE can register with the 5G Core Network, establish a PDU Session and exchange user-plane traffic
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## NR UE PHY Layer ##
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* Initial synchronization
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* Time tracking based on PBCH DMRS
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* Frequency offset estimation
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* 30KHz SCS for FR1 and 120 KHz SCS for FR2
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|
* Reception of NR-PSS/NR-SSS
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|
* NR-PBCH supports multiple SSBs and flexible periodicity
|
|
* Reception of NR-PDCCH (including reception of DCI, polar decoding, de-scrambling, de-modulation, RB de-mapping, etc)
|
|
- common search space configured by MIB
|
|
- user-specific search space configured by RRC
|
|
- DCI formats: 00, 10, 01 and 11
|
|
* Reception of NR-PDSCH (including Segmentation, LDPC decoding, rate de-matching, de-scrambling, de-modulation, RB de-mapping, etc).
|
|
- PDSCH mapping type A and B
|
|
- DMRS configuration type 1 and 2
|
|
- Single and multiple DMRS symbols
|
|
- PTRS support
|
|
- Support for 1, 2 and 4 RX antennas
|
|
- Support for up to 2 layers (currently limited to DMRS configuration type 2)
|
|
* Measurements based on NR-CSIRS
|
|
- RI, PMI and CQI computation
|
|
- Support for 1 and 2 RX antennas
|
|
- Support for up to 2 layers
|
|
* NR-PUSCH (including Segmentation, LDPC encoding, rate matching, scrambling, modulation, RB mapping, etc).
|
|
- PUSCH mapping type A and B
|
|
- DMRS configuration type 1 and 2
|
|
- Single and multiple DMRS symbols
|
|
- PTRS support
|
|
- Support for 1 TX antenna
|
|
- Support for 1 layer
|
|
* NR-PUCCH
|
|
- Format 0 (2 bits for ACK/NACK and SR)
|
|
- Format 2 (up to 64 bits, mainly for CSI feedback)
|
|
- Format 1, 3 and 4 present but old code never dested (need restructuring before verification)
|
|
* NR-SRS
|
|
- Generation of sequence at PHY
|
|
- SRS signal transmission
|
|
* NR-PRACH
|
|
- Formats 0,1,2,3, A1-A3, B1-B3
|
|
* SS-RSRP
|
|
- RSRP measured on synchronization SSB (ok only for single SSB)
|
|
* Highly efficient 3GPP compliant LDPC encoder and decoder (BG1 and BG2 are supported)
|
|
* Highly efficient 3GPP compliant polar encoder and decoder
|
|
* Encoder and decoder for short block
|
|
|
|
## NR UE FAPI ##
|
|
|
|
* MAC -> PHY configuration via UE FAPI P5 interface
|
|
* Basic MAC to control PHY via UE FAPI P7 interface
|
|
* PHY -> MAC indication (needs some improvement)
|
|
|
|
## NR UE Higher Layers ##
|
|
|
|
**UE MAC**
|
|
* Minimum system information (MSI)
|
|
- MIB processing
|
|
- Scheduling of system information block 1 (SIB1) reception
|
|
* Random access procedure (needs improvement, there is still not a clear separation between MAC and PHY)
|
|
- Mapping SSBs to multiple ROs
|
|
- Scheduling of PRACH
|
|
- Processing of RAR
|
|
- Transmission and re-transmission of Msg3
|
|
- Msg4 and contention resolution
|
|
* DCI processing
|
|
- format 10 (RA-RNTI, C-RNTI, SI-RNTI, TC-RNTI)
|
|
- format 00 (C-RNTI, TC-RNTI)
|
|
- format 11 (C-RNTI)
|
|
- format 01 (C-RNTI)
|
|
* UCI processing
|
|
- ACK/NACK processing
|
|
- Triggering periodic SR
|
|
- CSI measurement reporting
|
|
* DLSCH scheduler
|
|
- Configuration of fapi PDU according to DCI
|
|
- HARQ procedures
|
|
* ULSCH scheduler
|
|
- Configuration of fapi PDU according to DCI
|
|
* NR-CSIRS scheduler
|
|
- Scheduling of NR-CSIRS reception
|
|
- Fill UCI for CSI measurement reporting
|
|
* Scheduler procedures for SRS transmission
|
|
- Periodic SRS transmission
|
|
* Bandwidth part (BWP) operation
|
|
- Operation in configured dedicated BWP through RRCSetup or RRCReconfiguration
|
|
|
|
|
|
**UE RLC**
|
|
* Tx/Rx operations according to 38.322 Rel.16
|
|
- Segmentation and reassembly procedures
|
|
- RLC Acknowledged mode supporting PDU retransmissions
|
|
- RLC Unacknowledged mode
|
|
- DRBs and SRBs establishment and handling
|
|
- Timers implementation
|
|
- Interfaces with PDCP, MAC
|
|
|
|
**UE PDCP**
|
|
* Tx/Rx operations according to 38.323 Rel.16
|
|
- Integrity protection and ciphering procedures
|
|
- Sequence number management, SDU dicard and in-order delivery
|
|
- Radio bearer establishment/handling and association with PDCP entities
|
|
- Interfaces with RRC, RLC
|
|
|
|
**UE SDAP**
|
|
* Tx/Rx operations operations according to 37.324 Rel.15
|
|
- Establishment/Handling of SDAP entities.
|
|
- Transfer of User Plane Data
|
|
- Reflective Mapping
|
|
- RRC Signaling Mapping
|
|
|
|
**UE RRC**
|
|
* Integration of RRC messages and procedures supporting UE 5G SA connection according to 38.331 Rel.16
|
|
- RRCSetupRequest/RRCSetup/RRCSetupComplete
|
|
- RRC Uplink/Downlink Information transfer carrying NAS messages transparently
|
|
- RRC Reconfiguration/Reconfiguration complete
|
|
- Support for master cell group configuration
|
|
* Interface with PDCP: configuration, DCCH and CCCH message handling
|
|
* Interface with RLC and MAC for configuration
|
|
|
|
**UE NAS**
|
|
* Transfer of NAS messages between the AMF and the UE supporting the UE registration with the core network and the PDU session establishment according to 24.501 Rel.16
|
|
- Identity Request/Response
|
|
- Authentication Request/Response
|
|
- Security Mode Command/Complete
|
|
- Registration Request/Accept/Complete
|
|
- PDU Session Establishment Request/Accept
|
|
- NAS configuration and basic interfacing with RRC
|
|
|
|
|
|
|
|
[OAI wiki home](https://gitlab.eurecom.fr/oai/openairinterface5g/wikis/home)
|
|
|
|
[OAI softmodem build procedure](BUILD.md)
|
|
|
|
[Running the OAI softmodem ](RUNMODEM.md)
|