SERVAL PROJECTAD-HOC PACKET RADIO NETWORK

10/04/2012 – PROGRESS SEMINAR

Kévin TABAR Supervisor: Dr Paul Gardner-Stephen

2

Today’s agenda

The Serval Project Research question Tests & expected results Conclusion

Serval Project : Communicate anywhere, anytime

3

The Serval Project

Why does the Serval Project exist ? Costs of mobile communications

In event of disasters

Developing & remote areas

Freedom of Communication

Serval Project : Communicate anywhere, anytime

4

The Serval Project

Current implementation Wireless Mesh Network (WMN) Mobile Ad-hoc Network (MANET)

Android-based application Serval BatPhone

Serval Project : Communicate anywhere, anytime

5

The Serval Project

Services Free calls over VoIP (Voice over IP) MeshMS : SMS customized Rhizome : Sharing platform Video streaming Mapping

Kiwex 2012

Serval Project : Communicate anywhere, anytime

6

Research question

Current mesh network based on Wi-Fi Industrial, Scientific, Medical (ISM) 2400 MHz band High Rate/Short Range Sensitive from disturbances High consummation of the power

Implementation on ISM 915 MHz band Low Rate/Large Range Several national restrictions

Is it possible to create an Ad-Hoc packet radio network within the regulatory restrictions

imposed on the ISM-915 MHz band in Australia and the United States of America?

Serval Project : Communicate anywhere, anytime

7

Key points Ad-hoc packet radio frequency

Using the ISM-915 MHz band (915-928 MHz) Temporal-Frequency hopping : Synchronization

Low-cost Radio modules

Serval Project : Communicate anywhere, anytime

8

Key points

Integrate with Serval Mesh Through the Serval BatPhone

Optimize the bandwidth efficiency Scarce resource Range/Capacity Packet Loss

Serval Project : Communicate anywhere, anytime

9

Project’s Planning

March April May June

Thesis Report & Wiki Page

Context & Background

Documentation

Implementation & Testing Deliverables

ASIX – RF Hopping - AndroidSignal Analysis

RF Packet

RF Sync.

Meshing

OptimizationPoster

Designing

Serval Project : Communicate anywhere, anytime

Today’s Seminar

10

Tests & Expected Results

1) Communication between 2 modules Temporal-Frequency Synchronization Andrew Tridgell’s

firmware Data coherence Packet & path loss

2) Communication in a mesh (3 or more modules) 3) Link between 2 meshes

Synchronization Time leader Bandwidth Optimization

Serval Project : Communicate anywhere, anytime

11

Conclusion

Future works Total Integration in the android-based application Using the mobile phone’s antenna

Not require the low-cost radio module Reprogramming of the mobile phone’s firmware

Switching capacity on the application Wi-fi 915 MHz 915 MHz Wi-fi

More information Wiki Page :

https://wiki.csem.flinders.edu.au/bin/view/Projects/ProjectTaba0019

Official Serval project’s website : http://servalproject.orgServal Project : Communicate anywhere, anytime

THANK YOU FOR YOUR ATTENTION

ANY QUESTIONS ?

SERVAL PROJECT – Kévin TABAR

13

Serval Wi-Fi Mesh

Serval Project : Communicate anywhere, anytime

14

Serval 900 MHz Mesh

Serval Project : Communicate anywhere, anytime