SERVAL PROJECT AD-HOC PACKET RADIO NETWORK 10/04/2012 – PROGRESS SEMINAR Kévin TABAR Supervisor: Dr Paul Gardner-Stephen

Today’s agenda  The Serval Project  Research question  Tests & expected results  Conclusion Serval Project : Communicate anywhere, anytime 2

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 3

The Serval Project  Current implementation  Wireless Mesh Network (WMN)  Mobile Ad-hoc Network (MANET)  Android-based application Serval BatPhone Serval Project : Communicate anywhere, anytime 4

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 5

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 6

Key points  Ad-hoc packet radio frequency  Using the ISM-915 MHz band ( MHz)  Temporal-Frequency hopping : Synchronization  Low-cost Radio modules Serval Project : Communicate anywhere, anytime 7

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 8

Project’s Planning MarchAprilMayJune Thesis Report & Wiki Page Context & Background Documentation Implementation & Testing Deliverables ASIX – RF Hopping - Android Signal Analysis RF Packet RF Sync. Meshing Optimization Poster Designing Serval Project : Communicate anywhere, anytime 9 Today’s Seminar

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 10

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 :  Official Serval project’s website : Serval Project : Communicate anywhere, anytime 11

THANK YOU FOR YOUR ATTENTION ANY QUESTIONS ? SERVAL PROJECT – Kévin TABAR

Serval Wi-Fi Mesh 13 Serval Project : Communicate anywhere, anytime

Serval 900 MHz Mesh 14 Serval Project : Communicate anywhere, anytime