integration_2023_w13

• !1945 (merged) Free RNTI related structures at PHY after UE disconnection
• !2011 (merged) Creation of new pipeline LTE-TDD-2x2-container
• !1854 (merged) Handle reconfigurationWithSync
• !2019 (merged) bugfix: LDPC decoding in the gNB: clear d properly
• !2038 (merged) Fix DL 2x2 errors
• !2039 (merged) Adding test-case in XML to reset USRP in LTE-TDD pipeline
• !2008 (merged) Implement NR-UE Deregistration procedure
• !2023 (merged) Rework PDCP OAI API to allow custom SRB data forwarding (e.g., in F1)
• !2015 (merged) Update documentation: CI, general README.md, overview of doc README, various improvements

doc/README.md

+<table style="border-collapse: collapse; border: none;">
+  <tr style="border-collapse: collapse; border: none;">
+    <td style="border-collapse: collapse; border: none;">
+      <a href="http://www.openairinterface.org/">
+         <img src="./images/oai_final_logo.png" alt="" border=3 height=50 width=150>
+         </img>
+      </a>
+    </td>
+    <td style="border-collapse: collapse; border: none; vertical-align: center;">
+      <b><font size = "5">OpenAirInterface documentation overview</font></b>
+    </td>
+  </tr>
+</table>
+
+[[_TOC_]]
+
+# General
+
+- [FEATURE_SET.md](./FEATURE_SET.md): lists supported features
+- [GET_SOURCES.md](./GET_SOURCES.md): how to download the sources
+- [BUILD.md](./BUILD.md): how to build the sources
+- [clang-format.md](./clang-format.md): how to format the code
+
+There is some general information in the [OpenAirInterface Gitlab Wiki](https://gitlab.eurecom.fr/oai/openairinterface5g/-/wikis/home)
+
+# Tutorials
+
+- Step-by-step tutorials to set up 5G:
+  * [OAI 5GC](./NR_SA_Tutorial_OAI_CN5G.md)
+  * [OAI gNB with COTS UE](./NR_SA_Tutorial_COTS_UE.md)
+  * [OAI NR-UE](./NR_SA_Tutorial_OAI_nrUE.md)
+- [RUNMODEM.md](./RUNMODEM.md): Generic information on how to
+  * Run simulators
+  * Run with hardware
+  * Specific OAI modes (phy-test, do-ra, noS1)
+  * (5G) Using SDAP and custom DRBs
+  * IF setups and arbitrary frequencies
+  * MIMO
+- [How to run a 5G-SA setup](./TESTING_5GSA_setup.md)
+- [How to run a 5G-NSA setup](./TESTING_GNB_W_COTS_UE.md)
+- [How to run a 4G setup using L1 simulator](./L1SIM.md) _Note: we recommend the RFsimulator_
+- [How to use the L2 simulator](./L2NFAPI.md)
+- [How to use multiple BWPs](./RUN_NR_multiple_BWPs.md)
+- [How to run OAI-VNF and OAI-PNF](./RUN_NR_NFAPI.md) _Note: does not work currently_
+- [How to use the positioning reference signal (PRS)](./RUN_NR_PRS.md)
+- [How to use device-to-device communication (D2D, 4G)](./d2d_emulator_setup.txt)
+
+Legacy unmaintained files:
+- `L2NFAPI_NOS1.md`, `L2NFAPI_S1.md`: old L2simulator, not valid anymore
+- `SystemX-tutorial-design.md`
+- `UL_MIMO.txt`
+
+# Designs
+
+- General software architecture notes: [SW_archi.md](./SW_archi.md)
+- [Information on E1](./E1-design.md)
+- [Information on F1](./F1-design.md)
+- [Information on how NR nFAPI works](./NR_NFAPI_archi.md)
+- [Flow graph of the L1 in gNB](SW-archi-graph.md)
+- [L1 threads in NR-UE](./nr-ue-design.md)
+
+Legacy unmaintained files:
+- 5Gnas.md
+
+# Building and running from images
+
+- [How to build images](../docker/README.md)
+- [How to run 5G with the RFsimulator from images](../ci-scripts/yaml_files/5g_rfsimulator/README.md)
+- [How to run 4G with the RFsimulator from images](../ci-scripts/yaml_files/4g_rfsimulator_fdd_05MHz/README.md)
+- [How to run 5G with the L2simulator from images](../ci-scripts/yaml_files/5g_l2sim_tdd/README.md)
+- [How to run images in OpenShift](../openshift/README.md)
+
+# Libraries
+
+## General
+
+- The [T tracer](https://gitlab.eurecom.fr/oai/openairinterface5g/-/wikis/T/): a generic tracing tool (VCD, Wireshark, GUI, to save for later, ...)
+- [OPT](../openair2/UTIL/OPT/README.txt): how to trace to wireshark
+- The [configuration module](../common/config/DOC/config.md)
+- The [logging module](../common/utils/LOG/DOC/log.md)
+- The [shared object loader](../common/utils/DOC/loader.md)
+- The [threadpool](../common/utils/threadPool/thread-pool.md) used in L1
+
+## SDRs
+
+Some directories under `radio` contain READMEs:
+
+- [RFsimulator](../radio/rfsimulator/README.md)
+- [USRP](../radio/USRP/README.md)
+- [BladeRF](../radio/BLADERF/README)
+- [IQPlayer](../radio/iqplayer/DOC/iqrecordplayer_usage.md)
+
+The other SDRs (AW2S, LimeSDR, ...) have no READMEs.
+
+## Special-purpose libraries
+
+- OAI comes with an integrated [telnet server](../common/utils/telnetsrv/DOC/telnethelp.md) to monitor and control
+- OAI comes with an integrated [web server](../common/utils/websrv/DOC/websrv.md)
+
+# CI
+
+- [TESTBenches.md](./TESTBenches.md) lists the CI setup and links to pipelines