Sensor SAPs Support

Introduction

Wireless Sensor Networks are an important and exciting research area: using automated sensing mechanisms can help in many situations ranging from health, security, leisure and others. However, there is a great number of different sensor makers with their different specific mechanisms and parameters. Instituto de Telecomunicações, Aveiro, Portugal, have developed a MIH Sensor SAP having as base our ODTONE 802.21 implementation. This MIH Sensor SAP provides abstraction mechanisms towards all sensor technologies, facilitating Wireless Sensor Network operations and adding new sensing events and parameters which can further even more an optimized handover decision in mobility-supporting networks.

In this walkthrough we will demonstrate how to install, setup, deploy and run the Sensor SAP demo released on the ODTONE 0.4 version using SunSPOTs.

Requirements

Latest ODTONE version installed.
Java Open JDK 6 or later
Netbeans with SunSPOT Plugin
SunSPOTs with Yellow SDK version installed

Instalation

In the "extensions/sensors" folder you will find:

0001-PATCH-Sensor-support.patch: this file contains the changes to the MIHF and the MIH Protocol to support sensors. You can apply it by running the git am <path-to-patch>.
Dummy_Sensor_SAP: this folder contains the Dummy Sensor SAP Netbeans project.

Configuration

The ODTONE-MIHF configuration file:

[mihf]
id = mihf1
local_port = 1025
remote_port = 4551
peers = mihf2 0.0.0.0 4552 udp
users = user 1234
links = sensor_sap 1235 Sensor sensoraddress
transport = udp

Step-by-Step

Connect the SunSPOT Basestation to your computer.
Make sure you have connectivity between your computer and the SunSPOT by opening the SpotManager and on the Sun SPOTs tab, click Refresh and make sure that in the dropdown list you basestation’s MAC address is selected.
Open the Netbeans IDE, go to File, Open Project and browse to the folder where you have your copy of the Dummy Sensor SAP. The NetbeansIDE should immediately recognize it as a Netbeans project so you should be able to select it and click “Open Project”. The Dummy Sensor SAP project is now open in your Netbeans IDE Projects navigator (at the left side of the IDE by default)
With your mouse’s right button click on top of the Dummy Sensor SAP project and click on “Run”.
The Dummy Sensor SAP is now being deployed to your Basestation and as soon as it is ready it will automatically run itself.
Now go to the ODTONE’s MIHF folter (../ODTONE/dist/odtone-mihf) and start the MIHF.
You can now run the Dummy Sensor MIH-User (../ODTONE/dist/mih_sensor_usr) and execute the demo.

Technical Walkthrough

The MIH User will subscribe the Sensor SAP for some events (A), then it is going to configure some threshold values (B), obtain current operation parameters (C), request that an action be performed (D), and then receive two events (E and F) for which it had subscribed to.

sensor_scenario

Marcelo Lebre, Daniel Corujo, Diogo Gomes, Rui L. Aguiar, "Context Transport Based on 802.21", Proc. 1 CNRS 2011 - Conference on Wireless Sensor Networks, Coimbra, Portugal, Mar 2011
Daniel Corujo, Marcelo Lebre, Diogo Gomes, Rui L. Aguiar, "Media Independent Transport Service for Ambient Intelligence", Proc. 2011 Conferência sobre Redes de Computadores, Coimbra, Portugal, Nov 2011
Daniel Corujo, Marcelo Lebre, Diogo Gomes, Rui L. Aguiar, "A Framework for Flexible Sensor Information Dissemination", Proc. 2nd International Workshop on Interconnections of Wireless Sensor Networks, Barcelona, Spain, Jun 2011
Daniel Corujo, Marcelo Lebre, Diogo Gomes, Rui L. Aguiar, "Sensor Context Information for Energy-Efficient Optimization of Wireless Procedures ", Proc. 22nd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Toronto, Canada, Sep 2011
Daniel Corujo, Marcelo Lebre, Diogo Gomes, Rui L. Aguiar, "A Framework for the Connectivity of an Internet of Things", Proc. IEEE Sensors, Special Session: Ambient Intelligence Technologies & Applications Session, Limerick, Ireland, Oct 2011