Improving LoRaWan

2017 SNU Computer Network Term Project

Project Milestones

Progress Report 1

• due: 11/13

Todo

• Study LoRaWAN Specification and Source Code
  • Class A, Transmission parameters, OTAA join procedure
• Project plan & LoRaWAN specification

Progress Report 2 - Presentation

• due: 11/22

Todo

• Install and run LoRa end node, gateway, network server
• Design beacon based bi-directional communications

Progress Report 3

• due: 12/06

Todo

• Project status & source code

Final Report & Demo

• due: 12/18

Todo

• report
  • Detailed Instruction of implementation
  • Performance evaluation
• demo

Goal

Design and implement bi-directional communications

• End-nodes can initiate upstream communication as needed
• Enables downstream communications based on duty-cycles

→Similar to WiFi PSM mechanism

Beacon

• Gateway and end-nodes agree on beacon intervals
• An end-node seeks beacon and wakes up every beacon interval
• A gateway transmits beacons periodically to alert end-nodes with pending downstream frames
• An end node with pending frames listens the medium until it receives frames or to the next beacon
  • Other nodes enter into sleep mode until the next beacon

Specification

1. End Node implementation
   • Modify Class A
2. Network Server implementation
3. Gateway implementation
   • Packet Forwarder & Driver/HAL