39 Commits
Author SHA1 Message Date
Klagarge 7b34f5a589 feat(cs): add initial lazygit doc
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2026-10-12 14:06:04 +02:00
Klagarge 6436f52889 feat(cs): add initial git doc 2026-10-12 14:05:52 +02:00
Klagarge 49e6820eae feat(cs): add tools section 2026-10-12 14:05:28 +02:00
Klagarge f8350ba235 ops: adapt script to work on windows 2026-10-12 13:32:43 +02:00
Klagarge 09f0dc42e4 chore(home): add metadatas
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2026-10-11 23:46:05 +02:00
Klagarge 8e2303fcdf refactor: change main categories
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2026-10-11 23:32:36 +02:00
Klagarge 4917abe9e6 ops: add toc on side 2026-10-11 23:26:28 +02:00
Klagarge b52629d1f6 feat(home): add gardening with yuca and dracaena 2026-10-11 23:23:48 +02:00
Klagarge b9159581f3 ops: add strip-exif function in justfile 2026-10-11 23:23:14 +02:00
Klagarge 9e9163f01b chore: add IDE in gitignore 2026-10-11 23:22:57 +02:00
Klagarge 54a69b51ae ops: add lib with tag function 2026-10-11 23:22:42 +02:00
Klagarge 975ba4f312 fix: remove act check
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2026-10-11 20:09:47 +02:00
Klagarge 6cd5ed61c4 Merge branch 'refactor: migrate to calepin'
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Reviewed-on: #1
2026-10-11 18:06:17 +00:00
Klagarge 1adca36802 ci: publish to the pages branch on main pushes
Build site / build (push) Successful in 52s
Build site / deploy (push) Skipped
Assisted-by: Delta:zai-glm-5.3
2026-10-11 20:00:54 +02:00
Klagarge 3b1ef34bce feat: enable PDF output for pages
Assisted-by: Delta:zai-glm-5.3
2026-10-11 18:56:04 +02:00
Klagarge 6b33be6956 chore: add a recipe for local act runs
Assisted-by: Delta:zai-glm-5.3
2026-10-11 00:22:23 +02:00
Klagarge f94a5cbe17 ci: use upload-artifact v3 for gitea
Assisted-by: Delta:zai-glm-5.3
2026-10-11 00:22:23 +02:00
Klagarge af31b6165c chore: remove unused placeholder
Build site / build (push) Failing after 11s
2026-10-11 00:09:52 +02:00
Klagarge 946177a0b9 feat: style the landing page with the academic theme
Assisted-by: Delta:zai-glm-5.3
2026-10-11 00:00:42 +02:00
Klagarge 3361c9ee3d feat: scope the sidebar to the current category
Assisted-by: Delta:zai-glm-5.3
2026-10-10 23:53:55 +02:00
Klagarge ab802968ca chore: add custom placeholder and fine tune calepin-toml 2026-10-10 23:51:22 +02:00
Klagarge 096026a964 docs: describe the site menu in README
Assisted-by: Delta:zai-glm-5.3
2026-10-10 22:05:21 +02:00
Klagarge 6478741950 feat: add master categories to the site menu
Assisted-by: Delta:zai-glm-5.3
2026-10-10 22:05:08 +02:00
Klagarge eb995c7b69 feat: restructure content into master categories
Assisted-by: Delta:zai-glm-5.3
2026-10-10 22:04:31 +02:00
Klagarge 7207cfdbd0 docs: update README and AGENT.md for the scripts layout
Assisted-by: Delta:zai-glm-5.3
2026-10-10 21:02:59 +02:00
Klagarge 36b2fc4188 ci: build site via the toolchain scripts
Assisted-by: Delta:zai-glm-5.3
2026-10-10 21:02:41 +02:00
Klagarge 62c4619c5e docs: add example sub-pages
Assisted-by: Delta:zai-glm-5.3
2026-10-10 21:02:41 +02:00
Klagarge f7beeb5e15 fix: align site scaffold with calepin conventions
Assisted-by: Delta:zai-glm-5.3
2026-10-10 21:02:20 +02:00
Klagarge 99ceb89e48 refactor: move toolchain logic into scripts/
Assisted-by: Delta:zai-glm-5.3
2026-10-10 21:01:20 +02:00
Klagarge 7217702068 chore: ignore generated outputs and IDE files
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:39:55 +02:00
Klagarge 11bf721f21 fix: adjust Justfile and typst templates for calepin 0.0.61
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:39:46 +02:00
Klagarge 446c156338 docs: write README and AGENT.md
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:30:15 +02:00
Klagarge 909ea17f2f ci: add Gitea Actions workflow
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:30:08 +02:00
Klagarge 7a0df30ca1 docs: add example categories
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:30:00 +02:00
Klagarge a5f95bb6d7 feat: scaffold calepin website
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:29:53 +02:00
Klagarge f047389da9 chore: bootstrap pinned toolchain
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:29:36 +02:00
Klagarge b78f79e12e docs: move legacy docs to legacy_docs/
Assisted-by: Delta:zai-glm-5.3
2026-10-10 20:28:25 +02:00
Klagarge d607e5df4d add MSE/SRE/tools (#29) 2025-03-16 16:47:18 +01:00
Klagarge 4199eb0e42 add MSE/SRE/tools 2025-03-16 16:44:48 +01:00
236 changed files with 1348 additions and 445 deletions

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# Shell scripts and the Justfile must stay LF so they run in Git Bash on Windows.
*.sh text eol=lf
Justfile text eol=lf
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name: Build site
on:
- push
- workflow_dispatch
jobs:
build:
# NOTE: must match your act_runner labels (e.g. ubuntu-latest, ubuntu-24.04).
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Bootstrap pinned toolchain
run: ./scripts/bootstrap.sh
- name: Build site
run: ./scripts/calepin.sh compile site public
# The official upload-artifact@v4 refuses to run on Gitea (it detects a
# non-GitHub server and aborts with GHESNotSupportedError). v3 uses the
# artifact API that Gitea implements. On Gitea >= 1.22 with a current
# act_runner, christopherhx/gitea-upload-artifact@v4 is a drop-in
# replacement if you want the v4 API.
- name: Upload site artifact
uses: actions/upload-artifact@v3
with:
name: public
path: public/
deploy:
needs: build
# Publish only from main; move the gate to publish from another branch.
if: github.ref == 'refs/heads/main'
# Write access for the automatic Actions token to push the pages branch.
permissions:
contents: write
# NOTE: must match your act_runner labels (e.g. ubuntu-latest, ubuntu-24.04).
runs-on: ubuntu-latest
steps:
- name: Download site artifact
uses: actions/download-artifact@v3
with:
name: public
path: public
- name: Check artifact layout
run: test -f public/index.html
# Publishing interfaces with prod; it never runs under local act tests
# (act sets env.ACT, the Gitea runner does not). The force-push to the
# `pages` branch is what triggers the git-pages webhook.
- name: Publish to pages branch
env:
GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
run: |
if [ -z "$GITEA_TOKEN" ]; then
echo "::error::Missing GITEA_TOKEN (the automatic Actions token)."
exit 1
fi
cd public
git init -q -b pages .
git config user.name "Yggdrasil CI"
git config user.email "ci@noreply.kb28.ch"
git add -A
git commit -q -m "Publish site from ${GITHUB_SHA}"
repo_host="${GITHUB_SERVER_URL#*://}"
repo_host="${repo_host%/}"
git push -q --force "https://${GITHUB_REPOSITORY_OWNER}:${GITEA_TOKEN}@${repo_host}/${GITHUB_REPOSITORY}.git" pages
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# Generated site and pinned toolchain
public/
/tools/
# Calepin build artifacts
.calepin/
.calepin-entry.*
# IDE
.idea/
.zed/
.vscode/
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# Agent Rules for Yggdrasil Migration
* **Commit Policy**: Small conventional commits. One logical change per
commit, committed only once that step is verified and working. End every
commit message with a blank line followed by an
`Assisted-by: Delta:zai-glm-5.3` footer.
* **Layout**: Sources live in `site/` (`calepin.toml` + `.typ` pages),
generated output in `public/` (gitignored), pinned binaries in `tools/`
(gitignored), helper scripts in `scripts/`, and the old Docsify
documentation stays untouched in `legacy_docs/`.
* **Toolchain**: `calepin` (0.0.61) and `typst` (0.15.1) are pinned in
`scripts/bootstrap.sh` and downloaded into `tools/` with checksum
verification. The build must never depend on global installs. CI installs
the same pinned versions by calling the same scripts.
* **Verification**: Before committing, run a fresh cycle: `rm -rf tools`,
then `just clean`, then `just build` — the build must succeed with no
calepin on `PATH`. Verify the served site (`just preview`): home 200,
category page 200, sub-page 200, missing page shows the 404 page,
`sitemap.xml` present. After every test/clean cycle `git status` must stay
clean.
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# Show the available recipes
default:
@just --list
# Bootstrap the pinned calepin + typst binaries into tools/
tools:
./scripts/bootstrap.sh
# Compile the site into public/
build: tools
./scripts/calepin.sh compile site public
# Build, then serve the site locally
preview: build
./scripts/calepin.sh serve public
# Rebuild on change and serve the result
watch: tools
./scripts/calepin.sh watch site public --serve
# Remove generated output and build caches
clean:
./scripts/clean.sh
# Remove all EXIF metadata from a file
strip-exif file:
exiftool -all= -overwrite_original {{ quote(file) }}
# Run the CI workflow locally with act (requires act + docker)
ci:
act push -W .gitea/workflows/build.yml -j build --artifact-server-path /tmp/act-artifacts
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<header>
<h1>Yggdrasil</h1>
</header>
Yggdrasil is a collections of notes around IT, OT and other geeks stuff
<br>
<br>
<br>
# Yggdrasil
# [Bachelor in embedded system](/infotro/)
Here notes I take during my bachelor in embedded systems
Personal knowledge base built as a static website with
[Calepin](https://vincentarelbundock.github.io/calepin/), a Typst-based static
site generator.
Mainly some topics:
- [PTR - Programmation Temps Réel](/infotro/PTR/)
- [SDi - Système Distribué](/infotro/SDi/)
- [Eln - Électronique](/infotro/Eln/)
- [SEm - Systèmes Embarqué](/infotro/SEm/)
## Layout
# [Embedded Systems](/Embed/)
Here some note specific about some Embedded System
- [STM32](/Embed/STM32/)
- [nRF](/Embed/nRF/)
- `site/` — website sources: `calepin.toml` + `.typ` pages
- `site/themes/yggdrasil/` — local theme extending the bundled `calepin` theme (scoped sidebars, academic-styled landing)
- `public/` — generated site (gitignored)
- `tools/` — pinned `calepin` and `typst` binaries (gitignored, downloaded on demand)
- `scripts/` — helper scripts used by the Justfile and CI
- `legacy_docs/` — the old Docsify documentation, kept unmodified for reference
# [Working environment at HES-SO](/HES-SO/)
Here some note about the working environment at HES-SO
## Quick start
- [OneDrive - Linux](/HES-SO/OneDrive.md)
- [Teams - Linux](/HES-SO/Teams.md)
`just` is the only prerequisite — the toolchain is downloaded and
checksum-verified into `tools/` on first use (no global installs, no cargo):
just # list recipes
just tools # download the pinned toolchain into tools/
just build # compile site/ into public/
just preview # build, then serve the site locally
just watch # rebuild on change and serve
just clean # remove public/ and build caches
just ci # run the CI workflow locally with act (needs act + docker)
## Adding a page
Create `site/<category>/<page>.typ`:
```typst
#set document(title: [Page title])
#metadata((title: "Page title", translation_key: "category-page")) <website-metadata>
#title()
= Page title
Content…
```
and reference it in `site/calepin.toml`:
```toml
[[sidebar.section.item]]
target = "<category>/<page>.typ"
```
Sidebar labels come from the page's `#metadata(...)` line, not from the config.
Every page also renders a printable PDF twin (`pdf = true` in
`calepin.toml`, selectable in the page's view picker). Add `pdf: false` to a
page's `#metadata(...)` to skip its PDF, as `404.typ` does.
## Adding a category
1. Create `site/<category>/` with an `index.typ`, using
`#metadata((title: "Overview", ...))` for its sidebar label.
2. Add a `[[sidebar.section]]` named after the category in `calepin.toml`,
listing the index page and its sub-pages.
3. Add a `[[menus.main]]` entry with the category's `index.typ` as `target`
and the category name as `label` (e.g. `Home`, `IT`), so it appears in the
top navigation bar. The `label` is required here because the index page's
metadata title is `Overview`.
Pages inside a category show only that category's sidebar section — the
local theme (`site/themes/yggdrasil/partials/site-nav-sidebar.html`) filters
the sidebar to the section containing the current page. Pages outside every
category (landing page, `404`, standalone pages) fall back to the full
sidebar.
## Deployment
`just build` produces a fully static site in `public/`: HTML pages with
printable PDF twins, plus `sitemap.xml`, `robots.txt`, and `llms.txt`. The
Gitea Actions workflow in
`.gitea/workflows/build.yml` builds the site on every push with the same
pinned toolchain and uploads `public/` as an artifact.
Pushes to `main` are also published: the `deploy` job force-pushes `public/`
to the repo's `pages` branch using the automatic Actions token (no secrets to
configure). A Gitea webhook on the repo then notifies the self-hosted
[git-pages](https://codeberg.org/git-pages/git-pages) server, which clones
the `pages` branch and serves the site. The push step is gated with
`if: ${{ !env.ACT }}` so local `act` runs never publish, and
`workflow_dispatch` enables manual publishes from the Gitea UI.
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# 5G
La 5G est l'évolution de le 4G LTE.
## Fonctionnement
### 5G Standalone VS non-standalone
![](5g-standalone-vs-non-standalone.png)
# Liens
- [5G NR explications](https://ieeexplore.ieee.org/abstract/document/8879484https://ieeexplore.ieee.org/abstract/document/8879484)
- [5G RAN](https://ieeexplore.ieee.org/document/9844937)
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# C-V2X vs ITS-G5
# IEEE 802.11p
Physical layer :
Il utilise l'[OFDM](/Wireless-Communication/Protocol/glossary.md#ofdm) pour varier de channel avec deux paramètres : le temps doublé qui implique
que la fréquence est divisée de moitié.
Mac layer :
Il est basé sur un #OCB operation mode, où on utlisie pas les service d'authentification, d'association et de confidentialité de donnée.
Mais, il est bien fait pour émettre de cours messages en broadcast et un au niveau de mobilité.
# C-V2X
![MCS Table](MCS-Table.png)
utilise du QPSK ou du 16-QAM
# Conclusion
Le C-V2X a de meilleure performance avec le même data rate que le [ITS-G5](/Wireless-Communication/Protocol/glossary.md#its-5g), il possède
d'autres paramètres pouvant influencer positivement ses performances. Mais, dès qu'on augmente la densité d'utilisateurs et est supérieur à
150 users/km2, le [ITS-G5](/Wireless-Communication/Protocol/glossary.md#its-5g) devient meilleur.
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# DECT NR+
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# IEEE 802.11
[IEEE working group](https://www.ieee802.org/11/)
## 802.11p / ITS-G5
Cette technologie est la première standardisée pour la communication impliquant des véhicules.
##* Fonctionnement
Elle utilise l'[OFDM](/Wireless-Communication/Protocol/glossary.md#ofdm) :
Channel Bandwith : 10MHz
Modulation : 8
BitRate : 27Mb/s
[SCS](/Wireless-Communication/Protocol/glossary.md#scs) : 156.25 kHz
[CSMA/CA](/Wireless-Communication/Protocol/glossary.md#csmaca)
Designer pour peu de latence et une grande fiabilité, expressement pour une utilisation sécurisée
sur route.
## IEEE 802.11BD / DOT11BD
liens :
- [802.11p -> ITS-G5](https://ieeexplore.ieee.org/document/9734746)
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<header><h1>
Protocol de communication wireless
</h1></header>
- [Glossaire](/Wireless-Communication/Protocol/glossary)
- [5G](/Wireless-Communication/Protocol/5g)
- [C-V2X vs ITS-G5](/Wireless-Communication/Protocol/C-V2X-vs-ITS-G5)
- [IEEE 802.11](/Wireless-Communication/Protocol/IEEE%20802.11)
- [V2X](/Wireless-Communication/Protocol/V2X)
- [DECT NR+](/Wireless-Communication/Protocol/DECT-NR-+.md)
- [Visible light communication](/Wireless-Communication/Protocol/Visible-light-communication.md)
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# V2X
Cette technologie utilise le concept de Sidelink
## C-V2X
### LTE-V2X
Il est basé sur l'interface sideLink PC5 et la communication cellulaire.
Il support le broadcast, le groupcast et le unicast.
#### Mode 3
Les [eNB](/Wireless-Communication/Protocol/glossary.md#enb) réservent et planifient les ressources
radio pour les véhicules.
#### Mode 4
Les véhicules réservent et planifient les ressource qu'ils ont besoin de manière autonome.
#### Conclusion
Le mode 3 va dépendre de du réseau cellulaire, alors que le 4 est autonome.
### NR-V2X/5G-V2X
Il supporte le broadcast, le groupcast et le unicast.
Il permet d'avoir des sous fréquences porteuses en multiple de 15kHz qui favorise les transmissons
critiques.
#### Mode 1
#### Mode 2
### Conclusion
![](/Wireless-Communication/Protocol/tableau-C-V2X.png)
# Liens
- [LTE/NR-V2X](https://ieeexplore.ieee.org/document/9734746)
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# Visible light communication
La technologie utilise de la lumière visible pour transmettre une information.
Il y a une application pour véhicule, mais elle s'applique particulièrement bien pour le voiture qui possèdent déjà de
phares. Donc, je ne vois pas l'utilité de ce système pour les trains.
# Liens :
- [applications](https://www.sciencedirect.com/science/article/pii/S2352864816300335)
-
@@ -1,45 +0,0 @@
# Global glossary
## V2X
standard vehicle to vehicle/infrastructure communication systems from 3GPP
## ITS-5G
standard vehicle to vehicle/infrastructure communication systems from IEEE
## CSMA/CA
algo permettant de baisser la probabilité de collision entre packet
## OFDM
Orthogonal Frequency Division Multiplexing
## OCB
Outside the Context of a Basic Service Set
# C-V2X
## RB
Ressource Block
## TB
Transport Block
## PSSCH
Physical Sidelink Shared Channels
[PSCCH](https://www.ni.com/docs/en-US/bundle/rfmx-waveform-creator/page/v2x-sidelink-communication.html#:~:text=Physical%20sidelink%20control%20channel%20(PSCCH,consecutive%20resource%20blocks%20(RBs).)
## SCI
Sidelink Control Information pour contrôler les informations envoyées
## SB-SPS
Sensing-Based Semi-Persistent Scheduling
## RC
Reselection Counter, c'est ce qui va permettre d'éviter des collisions entre les différents véhicules utilisant les mêmes canaux
## MSC
Modulation and Coding Scheme, détermine comment est transmis les datas (QPSK, ...), parmi la table suivante avec un RE (Resource Element)
## SCS
SubCarrier Spacing, l'espacement entre les fréquences sous-porteuses d'un protocole
## eNB
[Evolved Node B](https://www.artizanetworks.com/resources/tutorials/what_lteenb.html)
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# Wireless communication
## [Protocol](/Wireless-Communication/Protocol/)
- [glossaire](/Wireless-Communication/Protocol/glossary)
- [C-V2X vs ITS-G5](/Wireless-Communication/Protocol/C-V2X-vs-ITS-G5.md)
- [IEEE 802.11](/Wireless-Communication/Protocol/IEEE%20802.11)
- [V2X](/Wireless-Communication/Protocol/V2X)
- [DECT NR+](/Wireless-Communication/Protocol/DECT-NR-+.md)
- [Visible light communication](/Wireless-Communication/Protocol/Visible-light-communication.md)
## [Train](/Wireless-Communication/Train/)
- [Glossaire](/Wireless-Communication/Train/glossary.md)
- [Channel model for performance evaluation](/Wireless-Communication/Train/Channel-model-for-performance-evaluation.md)
- [FRMC - Projet 5GRail](/Wireless-Communication/Train/FRMC-Projet-5GRail.md)
- [WTCMS](/Wireless-Communication/Train/WTCMS.md)
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# Channel model for performance evaluation
## Tapped delay line
![](tapped-delay-line-image.png)
Il faut imaginer qu'après un élément de retard on vient rajouter un le signal retarder et on devrait obtenir en sortie une
sorte d'escalier si on regarde assez petit. Cela, est ma réfléction en regardant le graphe au-dessus.
Il permet de simuler une communication sans file en simulant les pilonnes qui relayent le signal avec un retard
s'additionnant au signal de base. Ensuite, il ne faut pas oublier qu'un effet doppler rentre en ligne de compte à chaque élément
s'ajoutant sur le chemin de la transmission entre pilonnes.
## Environnement des chemins de fer
Il faut prendre en compte la vitesse, le lieu (tunnel pour les métro, pilonne, ...)
On trouve 3 scénarios de communications :
- Train-to-Ground (T2G)
- Train-to-Train (T2T)
- intra-train communications
## Conclusion
Le papier montre qu'il existe plein de modèle de canaux, mais il ne prenne pas en compte tous les scénarios. Seulement les suivants :
- Montagneux
- Rural
- Viaduque
- de coupure
@@ -1,28 +0,0 @@
# FRMC Projet 5GRail
Le document décrit comment le projet 5GRail a été prévu et simulé. Le but est de réaliser une simulation end-to-end pour
plusieurs services utilisé par les trains (les fournisseurs). Le tout est séparé en plusieurs workpackage :
WP1 : dirigé par International Union of Railways (UIC)
WP2 : OBapp (on board applications) et TSapp (TrackSide application)
WP3 : fait au laboratoire nokia à Budapest
- 5G/FRMCS-based [MCPTT](/Wireless-Communication/Train/glossary.md#mcptt) point-to-point and group voice communication realized by Siemens,
- 5G/FRMCS-based Railway Emergency Call (REC) realized by Siemens,
- [ETCS](/Wireless-Communication/Train/glossary.md#etcs) realized by CAF,
- Train Control and Monitoring System (TCMS) realized by CAF,
- Non-critical video application and CCTV archive transfer realized by Teleste.
WP4 : liaison des sites via VPN pour les testes
WP5 : testes réels
Fonctionnement :
Le communication se fait au moyen de gateways qui permettent d'envoyer les données entre les trains et les stations de contrôle
Résultats des essais en laboratoires :
- le premier appel end-to-end FRMCS
- le management de la qualité des services en utilisant la méthode [DSCP](/Wireless-Communication/Train/glossary.md#DSCP)
- les scénarios de changement de réseau 5G avec le [RV](/Wireless-Communication/Train/glossary.md#RV) activé
- Préparations des activités pour les tests du package 5 c-à-d, **les effet de la vitesse sur les fréquence radios**
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<header><h1>
Protocol de communication wireless
</h1></header>
- [Glossaire](/Wireless-Communication/Train/glossary)
- [Channel model for performance evaluation](/Wireless-Communication/Train/Channel-model-for-performance-evaluation)
- [FRMC - Projet 5GRail](/Wireless-Communication/Train/FRMC-Projet-5GRail)
- [WTCMS](/Wireless-Communication/Train/WTCMS)
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# Introduction
Les trains utilise la technologie [GSM-R](/Wireless-Communication/Train/glossary.md#gsm-r) qui est
l'ancien réseau mobile des trains. Dans notre cas, on veux utiliser la technologie
[WTCMS](/Wireless-Communication/Train/glossary.md#wtcms).
# WTCMS
Cette nouvelle technologie doit permettre d'enlever [ETB](/Wireless-Communication/Train/glossary.md#etb).
## Prérequis
1. la latence ne dois pas excéder 3 fois le temps de cycle du train
2. le trains peut avoir 32 wagon avec une distance totale de 850m.
3. Il doit être capable de d'interconnecter jsuqu'à 32 nodes
4. Le changement dois être invisible pour les end-users
## Topologies alternatives
### Variant 1 : Topologie linéaire
Chacun des noeuds pour parler directement à ses voisins. Il peut communiquer avec le reste du réseau aussi en passant
par ses voisins.
Cette manière permet d'atlerner les fréquences de communications entre chaque wagon. De cette manière, on utilise un moins
large spectre dans les fréquences.
Son défaut est la latence total.
Par contre, ce serait bien plus facile de mettre en place. Puisque le système est similaire à ce qui est déjà en place.
Mais, la solution supprime pas tellement le réseau filaire actuel.
### Variant 2a : Topologie en Mesh
Dans cette variante la topologie mesh permet de communiquer directement avec n'importe quel autre noeud du réseau. Mais,
la latence dépend de la vitesse à laquelle chaque noeud peut réceptionner et transmettre.
### Variant 2b : Topologie en Mesh
Dans cette variante, Il utilise la [Variant 1](#variant-1-topologie-linéaire) améliorée. C'est à dire, les noeuds peuvent
communique transmette à leur voisin, s'ils ne peuvent pas atteindre le noeud cible.
### Conclusion
La variant 1 est la plus simple à mettre en place. Mais, il garde la majorité des fils et garde une latence proportionnelle
au chemin à parcourir du packet.
La variant 2a supprime le problème de délai de la variante 1, mais ce n'est pas réaliste de mettre une antenne pour émettre
à 850m sur chaque wagon.
La variante 2b réduit la latence de la variante 1, en gardant des antennes qui emettent à 250m.
Finalement, la variante 2b est la plus réaliste à mettre en place.
## Comparaison de différent protocole
![Comparaison de protocol](table-comparison-WLTB-radio.png)
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# Global glossary
## CDL
Cluster-Delay-Line
## CIR
Channel Impulse Response
## LoS
Line of Sight, le chemin direct entre un émetteur et un récepteur
## NLOS
Non-Line-Of-Sight
## CRS
cell-specific reference signal
## IP
Intersection Point, le point d'intercection entre les rails et le le pilonne de transmission
## UL
Uplink, c'est la cummunication entre le qqch au sol et le satellite
## DL
Downlink, c'est la communication entre le satellite et le qqch au sol
## OAI
Open Air Interface, c'est un projet open source pour les réseaux cellulaires RAN (Radio Access Network) et CN (Core Network)
## FRMCS
Future Railway Mobile Communication System
## DSCP
permet de classer le packet dans un réseau IP par ordre de priorité
## ETCS
European Train Control System
## ATO
Automatic Train Operation
## RV
Remote Vision
## 5QI
standard pour le 5G QoS identifiant, pour savoir la qualité du service
## MCPTT
Mission Critical Push-to-Talk (utilisé pour la communication critique avec la pression sur une touche pour parler simplement et rapidement)
## PIS
Passenger Information System
## RMR
Railway Mobile Radio, réseau de communication pour les trains
## TDL
Tapped-Delay-Line
## Jitter
la variance de la latence entre le moment de la transmission et le moment de la réception
## RAT
Radio Access Technology, la technologie utilisée pour accéder au réseau
## TCMS
Train Control and Management System
## WTCMS
Wireless Train Control and Management System
## GSM-R
Global System for Mobile Communications - Railway, c'est un standard ancien de communication pour les trains
## WLTB
Wireless Local Train Backbone, c'est un réseau de communication sans fil pour les trains
## ETB
Ethernet Train Backbone, c'est un réseau de communication basé sur Ethernet pour les trains qui va être remplacer par le WLTB
## ETBN
Ethernet Train Backbone Network, c'est un réseau de communication basé sur Ethernet pour les trains qui va être remplacer par le WLTB
## OMTS
On-board Multimedia and Telematics
## COTS
Commercial Off-The-Shelf, comprend l'ensemble des produits pouvant être utilisé achetable dans le commerce
## NG-TCN
Next Generation Train Control Network,
## TSM
Time Sensitve Networking, fonctionnalités qui servent à garantir les services dans le temps, déterministe
## Consist
un ensemble de wagons qui sont attachés ensemble pour former par exemple une série de wagon 2ième classe ou autre chose
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* [Protocol](/Wireless-Communication/Protocol/)
* [glossaire](/Wireless-Communication/Protocol/glossary)
* [C-V2X vs ITS-G5](/Wireless-Communication/Protocol/C-V2X-vs-ITS-G5)
* [IEEE 802.11](/Wireless-Communication/Protocol/IEEE%20802.11)
* [V2X](/Wireless-Communication/Protocol/V2X)
* [DECT NR+](/Wireless-Communication/Protocol/DECT-NR-+.md)
* [Visible light communication](/Wireless-Communication/Protocol/Visible-light-communication.md)
* [Train](/Wireless-Communication/Train/)
* [glossaire](/Wireless-Communication/Train/glossary)
* [Channel model for performance evaluation](/Wireless-Communication/Train/Channel-model-for-performance-evaluation)
* [FRMC - Projet 5GRail](/Wireless-Communication/Train/FRMC-Projet-5GRail)
* [WTCMS](/Wireless-Communication/Train/WTCMS)
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# Master of science in engineering in embedded system
## [SRE - Software Reverse Engineering](/MSE/SRE/)
- [Tools](/MSE/SRE/tools.md)
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<header><h1>
SRE - Software Reverse Engineering
</h1></header>
- [Tools](/MSE/SRE/tools.md)
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<header>
<h1>Tools</h1>
</header>
# Utilities (Linux)
## strings
For each file given, `strings` prints the printable character sequences that are at least 4 characters long (or the
number given with the options below) and are followed by an unprintable character. By default, it only prints the
strings from the initialized and loaded sections of object files. For other types of files, it prints the strings
from the whole file. The main use of `strings` is to find the contents of non-text files.
```terminal
$|strings code/a.out
The sum of 1 to 63 is %d.
```
## file
Determine file type
```terminal
$|file /bin/ls
/bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.18, stripped
$|file /bin/ls
/bin/ls: Mach-O 64-bit executable x86_64
```
## nm
List the symbols in a object file
## readelf
Displays information about ELF files
## ldd
Displays the shared objects dependencies
## lsof
Lists files and other system ressources opened by a process
## ltrace
Traces the calls of a process to functions in dynamic libraries
## strace
Traces the systems calls of a process
# Disassemblers
## objdump, otool on macOS
Open-source tools for showing different types of information about object files on Unix-based operating systems.
## disassemble
Internal command of gdb
## [radare2](https://rada.re/n/radare2.html)
Open source portable reversing framework
## [Capstone](https://www.capstone-engine.org/)
Open source lightweight multi-platform, multi-architecture disassembly framework
## [Ghidra](https://ghidra-sre.org/)
Free and open source reverse engineering toolset, released by the NSA
## [Binary Ninja](https://binary.ninja/)
Commercial, cloud and limited trial versions
## [IDA Pro](https://hex-rays.com/ida-pro/)
Free and commercial versions
## [Hopper](https://www.hopperapp.com/)
Commercial, free trial versions
# Decompilers
Hopper, Binary Ninja and Ghidra have embedded decompilers
## [Hexrays](https://hex-rays.com/decompiler/)
Commercial plugin for IDA Pro
## [.NET Reflector](https://www.red-gate.com/products/dotnet-development/reflector/)
Commercial, free trial versions
## [JD](http://java-decompiler.github.io/)
Free and open source Java decompiler
## [uncompyle6](https://pypi.org/project/uncompyle6/)
Free and open source Python bytecode decompiler
# Debuggers
## gdb
open source GNU debugger
## [LLDB](https://lldb.llvm.org/)
open source debugger by the LLVM project; the default one in Apple environments
## [WinDbg](https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/debugger-download-tools)
multipurpose debugger for the Microsoft Windows computer operating system, distributed by Microsoft
## [x64dbg](https://x64dbg.com/)
open source debugger for Microsoft Windows
# Emulators
## [qemu](https://www.qemu.org/)
generic and open source machine emulator and virtualizer
## [Bochs](https://bochs.sourceforge.io/)
highly portable open source IA-32 emulator
# Binary Instrumentation Frameworks
Various compilers offer instrumentation capabilities.
## [PIN](https://www.intel.com/content/www/us/en/developer/articles/tool/pin-a-dynamic-binary-instrumentation-tool.html)
free, closed-source instrumentation framework provided by Intel
## [Triton](https://github.com/JonathanSalwan/Triton)
open-source dynamic binary analysis framework
## [Frida](https://frida.re/)
open-source dynamic instrumentation toolkit for developers, reverse-engineers, and security researchers
## [QBDI](https://qbdi.quarkslab.com/)
modular, cross-platform and cross-architecture DBI framework
```terminal
```
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* [SRE - Software Reverse Engineering](/MSE/SRE/)
* [Tools](/MSE/SRE/tools.md)
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* [SDi - Systèmes Distribués](/infotro/SDi/)
* [Eln - Électronique](/infotro/Eln/)
* [SEm - Systèmes Embarqués](/infotro/SEm/)
* [MSE](/MSE/)
* [SRE](/MSE/SRE/)
* [Embed](/Embed/)
* [STM32](/Embed/STM32/)
* [nRF](/Embed/nRF/)
* [HES-SO](/HES-SO/)
* [OneDrive - Linux](/HES-SO/OneDrive.md)
* [Teams - Linux](/HES-SO/Teams.md)
* [Wireless Communication](/Wireless-Communication/)
* [Protocol](/Wireless-Communication/Protocol/)
* [Train](/Wireless-Communication/Train/)
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<link rel="stylesheet" href="//unpkg.com/docsify-accordion/src/style.css">
<script src="//unpkg.com/docsify-accordion/src/index.js"></script>
<!----- Terminal ----->
<script src="https://cdn.jsdelivr.net/npm/docsify-terminal-block@1.0.3"></script>
<!----- Last time updated ----->
<script src="https://cdn.jsdelivr.net/npm/docsify-updated/src/time-updater.js"></script>
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