Lora-Protocol-Interface

This project implements a custom version of the AODV Protocol. It's much simpler and not complete.
This programm should run on a machine connected via Serial Port to a LORA Module. It implements an Ad-Hoc Multi-Hop-Routing Protocol with a graphical Interface. Furthermore this programm is able to discover other Nodes, send and receive messages.

Protocol

All AODV steps are implemented besides:

• Expanding Ring Search by RREQs (6.4)
• Gratuitous RREPs and Intermediate RREPs (6.6.2) & (6.6.3)
• Hello-Messages (6.9)
• Maintaining Local Connectivity (6.10)
• Local Repairs (6.12)
• Actions after Reboot (6.13)
• Interfaces (6.14)
• Subnetworks

Restrictions:

• Max Tries: 3
• Timeout RREQ: 30s
• Timeout ACK: 4s - 6s
• Timeout Payload: TimeoutACK.max * RouteHopCount
• Route Lifetime = Route Deletion Time = 3 min = 180 s
• Blacklist duration = 3 min = 180 s
• Adressen 1-20 (z.B. 144 -> 14)

Packets

All Packets are encoded as Bytes
(5,11,13,1,Hello)
[05 0B 0D 01 48 65 6C 6C 6f]

RREQ (broadcast):

1. Type: 1
2. U-flag
3. Hop Count
4. ID / Broadcast ID / RREQ ID
5. Origin Address
6. Origin Sequence Number
7. Destination Address
8. Destination Sequence Number

RREP: (Are always acknowledged, AT+DEST=PreviousHopAddr)

1. Type: 2
2. Hop Count
3. Origin Address
4. Destination Address
5. Destination Sequence Number
6. Lifetime in s (Lifetime left)

RERR (sent if no SEND-HOP-ACK received):

1. Type: 3
2. Destination Count
3. unreachable Destination Address
4. unreachable Destination Sequence Number
5. additional Addresses
6. additional Sequence Number

RREP-ACK (AT+DEST=PreviousHopAddr):

1. Type: 4

SEND-TEXT-REQUEST (STR, AT+DEST=NextHopAddr)

1. Type: 5
2. Origin Address
3. Destination Address
4. Message Sequence Number
5. Payload (max. 30 Byte)

SEND-HOP-ACK (AT+DEST=PreviousHopAddr)

1. Type 6
2. Message Sequence Number

SEND-TEXT-REQUEST-ACK (STR-ACK, AT+DEST=NextHopAddr)

1. Type: 7
2. Origin Address
3. Destination Address
4. Message Sequence Number

Deployment

Requirements

• JavaFX

Build yourself

1. Clone Repository
2. Run: mvn clean package
3. Run: java -jar --module-path /usr/share/openjfx/lib --add-modules javafx.controls,javafx.fxml LoraProtocollInterface-1.0-SNAPSHOT-jar-with-dependencies.jar

Use Release

1. Unzip
2. Run: java -jar --module-path /usr/share/openjfx/lib --add-modules javafx.controls,javafx.fxml LoraProtocollInterface-1.0-SNAPSHOT-jar-with-dependencies.jar

Screenshots