Easily Deployable A4 Wireless Mesh Networks

eA4Mesh Final Dissemination Event
Easily Deployable A4
Wireless Mesh Networks (eA4-Mesh)
Torsten Braun, Universität Bern, Switzerland
braun@iam.unibe.ch, a4-mesh.unibe.ch

Overview
> Introduction
— Partners (e)A4-Mesh
— A4-Mesh Network Scenarios
— A4-Mesh Objectives
— Environmental Monitoring
Scenarios
> A4-Mesh Activities
— Crans-Montana Network
Maintenance
— UniNe Campus Extension
— UniBe Tobler Deployment
> eA4-Mesh Objectives
0. Software Maintenance
1. Automatic Antenna Alignment
2. Exploring COTS Equipment
3. Integration of New Users:
CHYN Deployment at Emmental
4. Reliable Traffic Accounting
Schemes
5. Scientific Data Management
6. Dissemination & Publications
Neuchâtel, April 5, 2013
Torsten Braun: Easily Deployable A4 Wireless Mesh Networks (eA4-Mesh)
2

Partners (e)A4-Mesh
> Uni Bern
— Institut für Informatik und Angewandte Mathematik
— Geographisches Institut
— Informatikdienste
> Uni Neuchâtel
— Institut d’Informatique
— Service Informatique et Télématique
— Centre for Hydrogeology and Geothermics
> SWITCH
> only A4-Mesh
> only eA4-Mesh
3

A4-Mesh Network Scenarios
4
1. Environmental
Monitoring
2. Campus Network
Extension

A4-Mesh Objectives
> Authentication and Authorization of
1. wireless mesh nodes entering the wireless mesh network
2. mobile users accessing the Internet via the wireless mesh network
(using SWITCH AAI mechanisms)
> Accounting of traffic generated by
1. mesh nodes and sensors
2. individual mobile users
(for charging and monitoring purposes)
> Auditing functions
— detect inconsistent or erroneous node states
— perform recovery mechanisms or trigger alarms
> Pilot networks at
1. Crans-Montana (and Emmental in eA4-Mesh)
2. Bern and Neuchâtel University campuses
5

Environmental Monitoring Scenarios
6
A4-Mesh
eA4-Mesh

A4-Mesh Topology at Crans-Montana
Sion
Sierre
Neuchâtel, April 5, 2013 7
x
x
x

A4-Mesh Weather Stations and Sensors
wind velocity &
direction
air temperature &
relative humidity
solar radiation
rainfall

Crans-Montana Network Maintenance
> Removal/relocation of nodes (4a, 4b, 1a / 8)
> Energy measurements on mesh nodes
9

UniNe Campus Extension
10
> Development of an Ethernet Bridge using Alix mesh nodes
> Integration of bridge into switching infrastructure of University of Neuchâtel

UniNe Campus Extension
11
Alix Box + Lanbowan Antenna
UniMail Campus Lac

UniBe Tobler Deployment

UniBe Tobler Deployment
> Temporary deployment and usage by
students
> Solar panel did not produce enough
energy.
> Future solutions
— Better solar panels
— Energy saving algorithms
13

eA4-Mesh Objectives
Usable and sustainable deployment of real outdoor WMNs
1. Automatic antenna alignment systems
2. Exploring commercial off-the-shelf (COTS) equipment
3. Integration of new users
4. Reliable traffic accounting schemes
5. Scientific data management
6. Documentation and dissemination
14

0. Software Maintenance
> Refinement and improvement
(kernel updates, bug fixes)
of software package for
authentication & authorization
including user documentation.
> Integration of software
packages for authentication,
authorization, accounting and
monitoring functions.
15

1. Automatic Antenna Alignment
> Motivation
— Severe challenges with manual
antenna alignment during
Crans-Montana deployment
— Frequent readjustment due to
bad weather conditions
> Solution
— Development of automatic
antenna alignment system
based on electro-motors
16

2. Exploring COTS Equipment
17
Ubiquity Nano M5
Proxim QB-8150
Ubiquity Rocket M5 Titanium
AirMax Sector Antenna

Exploring COTS Equipment
> Throughput between 2 buildings (900 meters)
> Comparison (opinion score)
18

3. Integration of New Users
> Another WMN deployment to support hydrology researchers
— Research group of Prof. Hunkeler
(Centre d'hydrogéologie et de géothermie, Uni Neuchâtel, CHYN)
— WMN deployment at Emmental
19

Emmental WMN Deployment Preparation
> Technical and organisational
planning of Emmental WMN
deployment
— Material
— Network planning
— Rendezvous with land owners
— …
20

Installation in Emmental
Aebnitegg
Water
pump
station
Aeschau
River
Sensors
River Sensors
21

Aebnittegg
22

Aeschou
23

River
24

4. Reliable Traffic Accounting Schemes
25

Reliable Traffic Accounting Scheme
> ns-2 simulation of scheme
> Preliminary results for TCP traffic.
26
Download Upload
Network topology:

5. Scientific Data Management
> Zabbix monitoring infrastructure to gather scientific sensor data
> Solution requires
— sensors compatible with Linux
— interface (reader) between Logger and Zabbix Agent
> Zabbix Web Interface shows detailed environmental plots.
27

6. Dissemination and Publications
> M. Anwander, T. Braun, A. Jamakovic, Th. Staub: Authentication and
Authorisation Mechanisms in Support of Secure Access to WMN
Resources, Fourth IEEE International Workshop on Hot Topics in Mesh
Networking, San Francisco, June 25, 2012
> A. Jamakovic, D. Dimitrova, M. Anwander, T. Macicas, T. Braun, B.
Nyffenegger: Real-World Energy Measurements of a Wireless Mesh
Network, Energy Efficiency in Large Scale Distributed Systems
Conference, COST Action IC 0804, Vienna, April 22-24, 2013
> A. Jamakovic et al.: Wireless Mesh Network for Environmental
Research, Special Magazine on AAA/SWITCH, 2013
> A. Jamakovic et al.: A4-Mesh: Connecting Remote Sites, SWITCH
Journal, March 2012, pp. 15-17
> E. Schiller, P. Kropf: Réseaux maillés sans fil pour l'enseignement
supérieur, market.ch, October 2012
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Thanks for your Attention
> More information: http://a4-mesh.unibe.ch
— Sensor data
— Web cam
29

Easily Deployable A4 Wireless Mesh Networks

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