Jaroslava Fiedlerova
19f61af2eb
vrtsim: Optimize channel modelling Optimization pass for channel modelling on transmission in vrtsim. This comes from a requirement of O-RU to perform channel modelling with minimum latency. The latency measured in O-RU 4TX 2RX on the UE is lowered from ~400 uS to ~100uS. - Reduced MAX_CHANNEL_LENGTH to 200 and introduced SAVED_SAMPLES_LEN - Refactored channel modelling actor allocation to parallelize work better - Improved batching and task creation for channel modelling - Replaced static global saved_samples with local static buffer in vrtsim_write_with_chanmod Create a new CI pipeline for testing with vrtsim on Gracehopper: https://jenkins-oai.eurecom.fr/job/RAN-VRT-Sim-Test-5G/
Configuration files: naming style guide
The configuration files should have the following name format:
<type>[.<sa|nsa>][.band<num>.[u<num>.]<num>prb].<sdr>[.<opt>].conf
Where:
[]means this field is optional<type>: one ofgnb,enb,gnb-cu,gnb-du,nrue,lteue, etc.<sa|nsa>: in the case of 5G, notes whether this is SA or NSA<num>forband/u/prb: numerical value. Note that band/PRB are only applicable in some cases. The numerologyuis only to be set for 5G if it differs fromu1.<sdr>: what SDR board/split this is tailored for:- e.g.,
usrpb210,usrpn310,rfsim,aw2s - if there is no SDR (e.g., for a CU), use the south-bound split, e.g.,
f1,if4p5, etc. - for the L2simulator, write
l2sim
- e.g.,
<opt>: optional specifiers. If there are multiple, concatenated using a dash (-). Examples:2x2prs(positioning reference signal)ddsuu(specific TDD pattern)tm2: Transmission Mode 2 in 4Goaiue: specifies usage with OAI UE and not COTS UE
Examples:
- standard monolithic gNB, 2x2 configuration, with SDAP:
gnb.sa.band78.162prb.usrpn310.2x2-sdap.conf - gNB-CU:
gnb-cu.sa.f1.conf - monolithic gNB, L2sim:
gnb.sa.band77.106prb.l2sim.conf - monolithic eNB:
enb.band7.25prb.usrpb200.conf - RCC (4G eNB with IF4.5 split):
enb-rcc.band7.25prb.tm1.if4p5.conf
Notes:
- there is no need for TDD/FDD, this is encoded in the band number
- there is no need for FR1/FR2, this is encoded in the band number