General new features and improvements (both RAN and UE):
- Rework LDPC BBdev/AAL interface and support both AMD T2/Intel vRAN Boost
(VRB) 1 accelerators
- Add a taps client for vrtsim real-time simulator
- Add new RFemulator virtual radio driver to emulate radio (including noise
generation) for gNB/UE standalone operation
- RLC AM reception improvements for high-throughput scenarios (!3512)
- Small NTN fixes (!3659, !3666, !3581, !3652)
- Improvements to imScope
Stability and bug fixes:
- RFsimulator: fix concurrency problems during multi-client connection
- USRP driver: support synchronization of USRP B200
- MAC scheduler improvements
- General L1 improvements for efficiency and stability
- Correct PRS bug and test in CI
- Upgrade Ubuntu container images to Ubuntu 24.04
- All build system targets compile (`make/ninja all`)
- Minor cleanup, harmonization, and performance improvements all over the stack
- Simplify CI code
RAN changes (gNB/CU/CU-CP/CU-UP/DU/DU-high/DU-low):
- Support of N2 handover
- Support of "UL-heavy" TDD patterns, e.g., DSUUU
- Open Fronthaul M-plane: CM improvements, PM implementation, and additional
v16.01 support
- Improve interoperability with Nvidia Aerial L1 to support 2 layer UL
- Add O-RAN OSC WLS library as FAPI transport and enable L1/L2 shared memory
split
- Implement FAPI Stop exchange
- Improve interoperability with srsRAN_Project DU
- Add new synchronized real-time data recording application (!3462)
- Support for measurement gaps and general handover fixes
- Support of RRC PDU session release procedure
- Add CU-UP load tester
- Correct BWP scheduling and support multiple BWPs per UE
nrUE changes:
- Support one additional PDU session (see !3486)
- L3 measurements for A2 measurement reports
- Support for type0 PDSCH frequency allocation
- UE symbol based PDCCH receiver
Regression or removals:
- No known regressions
- Unused L2 simulator code has been removed
- Unused Benetel radio driver code (not FHI 7.2!) has been removed
Configuration file changes:
- `gNBs.[0].servingCellConfigCommon.[0].ra_ResponseWindow` is automatically
computed and can be removed
- `gNBs.[0].bwp_list` has been added (moved from entries in
`gNBs.[0].servingCellConfigDedicated`)
- `gNBs.[0].phaseTrackingRS` has been added (moved from entries in
`gNBs.[0].servingCellConfigDedicated`)
- `gNBs.[0].local_s_portc` and `gNBs.[0].remote_s_portc` have no effect and
should be removed
- `gNBs.[0].CSI_report_type` has been added
- `MACRLCs.[0].ulsch_max_frame_inactivity` is automatically computed and can be
removed
- `MACRLCs.[0].local_n_portc` and `MACRLCs.[0].remote_n_portc` have no effect and
should be removed
- `MACRLCs.[0].stats_max_ue` has been added