Cedric Roux
b904ce7978
The idea is as follows. oaisim waits for all tasks to be done for a TTI. To do so it waits for last_rx_timestamp == current_rx_timestamp, for all UEs and eNBs. When it's done, it increases current_rx_timestamp by samples_per_tti, to inform UEs and eNBs that a new TTI is ready. In the functions [UE|eNB]_trx_read, we wait for a new TTI to be ready, that is we wait for current_rx_timestamp != last_rx_timestamp. The UE has also to wait for processing threads to be done. In the eNB it's not necessary because the processing is all done in one thread, that is: read subframe, process this subframe, emit subframe+4, and then back to read subframe. The code is not clean. We should not use usleep but semaphores. Also, do_[DL|UL]_sig should not read from rxdata and write to txdata, but use internal buffers. The functions [UE|eNB]_trx_read should call do_[DL|UL]_sig and then copy from the internal buffers of the channel simulator into rxdata. The functions [UE|eNB]_trx_write should write data passed into the internal buffers of the channel simulator.
OpenAirInterface is under OpenAirInterface Software Alliance license.
├── http://www.openairinterface.org/?page_id=101
├── http://www.openairinterface.org/?page_id=698
It is distributed under OAI Public License V1.0.
The license information is distributed under LICENSE file in the same directory.
Please see NOTICE.txt for third party software that is included in the sources.
The OpenAirInterface (OAI) software is composed of the following parts:
openairinterface5g
├── cmake_targets: build utilities to compile (simulation, emulation and real-time platforms), and generated build files
├── common : some common OAI utilities, other tools can be found at openair2/UTILS
├── LICENSE
├── maketags : script to generate emacs tags
├── openair1 : 3GPP LTE Rel-10 PHY layer + PHY RF simulation and a subset of Rel 12 Features.
├── openair2 :3GPP LTE Rel-10 RLC/MAC/PDCP/RRC/X2AP implementation.
├── LAYER2/RLC/ with the following subdirectories: UM_v9.3.0, TM_v9.3.0, and AM_v9.3.0.
├── LAYER2/PDCP/PDCP_v10.1.0.
├── RRC/LITE
├── PHY_INTERFACE
├── X2AP
├── ENB_APP
├── openair3: 3GPP LTE Rel10 for S1AP, NAS GTPV1-U for both ENB and UE.
├── GTPV1-U
├── NAS
├── S1AP
├── SCTP
├── SECU
├── UDP
└── targets: top level wrapper for unitary simulation for PHY channels, system-level emulation (eNB-UE with and without S1), and realtime eNB and UE and RRH GW.
RELEASE NOTES:
v0.1 -> Last stable commit on develop branch before enhancement-10-harmony
v0.2 -> Merge of enhancement-10-harmony to include NGFI RRH + New Interface for RF/BBU
v0.3 -> Last stable commit on develop branch before the merge of feature-131-new-license. This is the last commit with GPL License
v0.4 -> Merge of feature-131-new-license. It closes issue#131 and changes the license to OAI Public License V1.0
v0.5 -> Merge of enhancement-10-harmony-lts. It includes fixes for Ubuntu 16.04 support
v0.5.1 -> Merge of bugfix-137-uplink-fixes. It includes stablity fixes for eNB