From 110f5c73049641b9175185b8e301c406d3fd8de0 Mon Sep 17 00:00:00 2001 From: Robert Schmidt Date: Mon, 13 Oct 2025 09:32:42 +0200 Subject: [PATCH] Updates for Feature Set --- doc/FEATURE_SET.md | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/doc/FEATURE_SET.md b/doc/FEATURE_SET.md index 4429cad56b..b0f85405be 100644 --- a/doc/FEATURE_SET.md +++ b/doc/FEATURE_SET.md @@ -31,7 +31,7 @@ The following features are valid for the gNB and the 5G-NR UE. * Subcarrier spacings: 15 and 30kHz (FR1), 120kHz (FR2) * Bandwidths: 10, 20, 40, 60, 80, 100MHz * Intermediate downlink and uplink frequencies to interface with IF equipment -* Procedures for 2-layer DL and UL MIMO +* Procedures for 4-layer DL and 2-layer UL SU-MIMO * Slot format: 14 OFDM symbols in UL or DL * Highly efficient 3GPP compliant LDPC encoder and decoder (BG1 and BG2 supported) * Highly efficient 3GPP compliant polar encoder and decoder @@ -47,7 +47,7 @@ These modes of operation are supported: * "noS1" mode (DL and UL, gNB, nrUE): - Connection setup stops after RA; RRC configuration is exchanged through files - - Creates TUN interface to PDCP to inject and receive user-place traffic + - Creates TUN interface to SDAP to inject and receive user-place traffic - No connection to the core network * Standalone (SA) mode (gNB, nrUE): - UE can register with the 5G Core Network through the gNB, establish a PDU @@ -73,7 +73,7 @@ These modes of operation are supported: - Single and multiple DMRS symbols - PTRS support - Support for up to 4 TX antennas - - Support for up to 2 layers + - Support for up to 4 layers - Support for 256 QAM * NR-CSIRS Generation of sequence at PHY * NR-PUSCH (including Segmentation, LDPC encoding, rate matching, scrambling, modulation, RB mapping, etc). @@ -104,7 +104,9 @@ These modes of operation are supported: ## gNB MAC - MAC -> PHY configuration using NR FAPI P5 interface -- MAC <-> PHY data interface using FAPI P7 interface for BCH PDU, DCI PDU, PDSCH PDU +- MAC <-> PHY data interface using FAPI P7 interface for DL_TTI.request, + UL_TTI.request, UL_DCI.request, TX_data.request, RX_Data.indication, + CRC.indication, UCI.indication, SRS.indication - Generation of and scheduler procedures for MIB/SIB1 - Scheduler procedures for RA - 4-Step RA @@ -125,7 +127,7 @@ These modes of operation are supported: - regular scheduler with dynamic proportionally-fair allocation - MCS adaptation from HARQ BLER - MAC header generation (including timing advance) -- ACK / NACK handling and HARQ procedures for downlink +- ACK/NACK handling and HARQ procedures for downlink - MAC uplink scheduler - phy-test scheduler (fixed allocation) - regular scheduler with dynamic proportionally-fair allocation @@ -144,6 +146,9 @@ These modes of operation are supported: neighbors include cells operating on different frequencies - DUs must be synchronized with each other for the measurements to be properly performed - Initial support for RedCap + - RedCap SIB1 v17 IEs supported + - Coexistence of RedCap and Normal UEs + - Handling of RedCap capability for small PDCP/RLC SN size - Scheduling of SIBs (2, 19) ## gNB RLC @@ -180,7 +185,7 @@ These modes of operation are supported: - NR RRC (38.331) Rel 17 messages using new [asn1c](https://github.com/mouse07410/asn1c) - LTE RRC (36.331) also updated to Rel 15 - Generation of system information (SIB2) -- RRC can configure PDCP, RLC, MAC +- RRC can configure PDCP and SDAP (through E1), and RLC and MAC (through F1) - Interface with GTP-U (tunnel creation/handling for S1-U (NSA), N3 (SA), F1 interfaces) - Integration of RRC messages and procedures supporting UE 5G SA connection - RRCSetupRequest/RRCSetup/RRCSetupComplete @@ -190,8 +195,10 @@ These modes of operation are supported: - Support for MasterCellGroup configuration (from DU) - Interface with NGAP for the interactions with the AMF - Interface with F1AP for CU/DU split deployment option - - Periodic RRC measurements of serving cell (no A/B events) -- Initial support for RedCap + - Interface with E1AP for CU-CP/CU-CP split deployment option + - Periodic RRC measurements of serving/neighbour cells and A2/A3 event + handling +- Initial support for RedCap (see MAC) ## gNB X2AP @@ -226,6 +233,7 @@ These modes of operation are supported: * F1 UE Context modification required * F1 UE Context release req/cmd/complete - F1 gNB CU configuration update + - F1 gNB DU configuration update - F1 Reset (handled at DU only, full reset only) - Interface with RRC - Interface with GTP-u (tunnel creation/handling for F1-U interface) @@ -245,7 +253,8 @@ These modes of operation are supported: - Bearer Context Modification (gNB-CU-CP initiated) - E1 Bearer Context Modification Request - E1 Bearer Context Modification Response -- Interface with RRC and PDCP + - E1 Reset +- Interface with RRC and PDCP/SDAP - One CU-CP can handle multiple CU-UPs ## gNB GTP-U