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Faculty of Electrical Engineering & Information TechnologyCommunication Networks InstituteProf. Dr.-Ing. Christian Wietfeld
dortmunduniversity
Communication-aware Service Platform for Collaborative UAV applications
Christian WietfeldTU Dortmund University, Germany
September 2013
Talk at UAV-g
dortmunduniversity
Slide 2
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 3
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Where UAV swarms are useful (compared to ground-based systems and single UAVs)
Exploration Ad-hoc Communication
Advantages of a UAV swarm: • Faster task execution• Increased exploration coverage• More, but less complex sensors• Scalable
Advantages of a UAV swarm: • Faster network setup independent of
ground infrastructure• Increased network coverage
NetworkGateway
Air-to-Air
Air-to-Air
e.g.Plume
Air-to-Ground
Serving Cellular
Base Station Users
Movement
Air-to-User
Sensor Data Sink Ground Network
Coverage
MovementInterferingCellularBaseStation
dortmunduniversity
Slide 4
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
A UAV swarm can achieve more in less time
BUT: control is more complex, as UAVs must cooperate to spread efficiently acrossthe scenario communication within the swarm is key!
dortmunduniversity
Slide 5
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Support of emergency response: AIRSHIELD – Sensing for fire
fighters AVIGLE – Avionic Digital Service
Platform ANCHORS – Ad Hoc Networks for
rescue forces AirBeam – Wide-Area Airborne
information for Emergency Situation Awareness
Cooperative UAV research @ CNI
dortmunduniversity
Slide 6
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 7
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Key Components of the multi-purpose UAS Service Platform
Service ControlGround(SCG)
Service Control
Air(SCA)
Air-to-Ground
Air-to-Air
dortmunduniversity
Slide 8
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Service Control AService
Control AService
Control Air(SCA)
Service Control Ground (SCG)
Service Control Air
(SCA)
3D Sensor Exploration
(3DSE)
Aerial RadioAccess Network(ARAN)
…
Air-to-Ground Comm.
Air-to-Air Comm.
CognitiveMobility Control
Task Assignment &Mission Planning
ApplicationServices
Architecture of the multi-purpose UAS Service Platform
C. Wietfeld, K. Daniel, Cognitive Networking for UAV Swarms, in „Handbook for Unmanned Aerial Vehicles“, Ed. K. P. Valavanis; G. J. Vachtsevanos, Springer Reference, 2014.
dortmunduniversity
Slide 9
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Service Control
Air(SCA)
Flight ControlAccess Service (FCAS)
Mobility ControlService (MCS)
Payload Management Service (PMS)
Obstacle Map Service (OMS)
Radio Propagation Map Service (RPMS)
System Monitoring & Logging Service (SMLS)
Dynamic Role Mgmt. Service (DRMS)
Mobile Comm. Mgmt. Service (MCMS)
UAV Information Dispatch Service (UIDS)
802.11a .. s
UMTS / LTE
…
Multicopter
Tiltwing
…
Sensors
Comm. Relays
…
Scout
Intermediate Relay
…
CAPF
IPAR
…
ServiceControlGround
(Air-to-Ground)
Other SCAs of AUS(Air-to-Air)
CAPF- Communication-Aware Potential FieldsIPAR – Interference-Aware Positioning of Aerial Relays
Geo-Positioning Service (GPOS)GPS
GALILEO
…
User Equipment
(Air-to-User)
Service Control Air (SCA)
dortmunduniversity
Slide 10
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Service ControlGround(SCG)
Application ServiceRegistry (ASR)
Dynamic Task Assign-ment Service (DTAS)
UAV Payload Mmgt. Service (UPMS)
System Monitoring & Logging Service (SMLS)
Mission Preplanning & Safety Service (MPPS)
Mobile Comm. Mgmt. Service (MCMS)
Swarm Information Dispatch Service (SIDS)
802.11a...s
UMTS / LTE
…
3DVE Service.
ARAN Service
…
Optical Sensors
Comm. Relays
…UAS ApplicationServices
Service Control Airs of Swarm(Air-to-Ground)
UAS Radio Propagation Map Service (UPMS)
UAS Obstacle MapService (UOMS)
3DSE – 3D Sensor ExplorationARAN – Aerial Radio Access Network
Service Control Ground (SCG)
dortmunduniversity
Slide 11
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Model-based Development Process
Hardware in the LoopValidation
SimulationValidation
Software in the LoopValidation
FullExperimental
Validation
Optimized Parameterization
Refined Control Algorithms & System ConceptIn
itial
Con
cept
Evol
ved
UAV
Sys
tem
ExperimentalValidation
SCG
SCA1SCA2SCA3
Hardware in the Loop
dortmunduniversity
Slide 12
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 13
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Scientific objectives of context-aware mobility algorithm design
Design context-aware mobility
algorithms
Context: Unknown environment Changing communication
channel Ground station
temporarily not available
Sensitivity: Continuous RSSI
measurements Memory of visited cells
Mobility algorithm:Evaluation and Usage of
controlled mobility“self-placement / self-
configuration “
Sensordistribution
Sensorcoverage
Receivedpower
Swarmcoherence
„Exploration efficiency“ „Connectivity“
dortmunduniversity
Slide 14
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Spatial Exploration Ratio
∑
Exploration Distribution Index, T: Theil-Index
Cluster Separation Ratio
∑: # ,
: #
Exemplary Key Performance Indicators
Separation
SER=5%
EDI0
“unequal“
EDI1
“equal“
Cluster
c = 1
c = 2
dortmunduniversity
Slide 15
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Key Performance Indicators
Cluster Separation Rate >= 1
SER 100%
EDI 1
time
dortmunduniversity
Slide 16
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Pre-planned schemes cannot cope with dynamically changing environments
Example: Deterministic Tour Planning Centralistic, deterministic planned paths good Exploration Ratio
Maintain static formation
BUT: Mission area has to be known a priori Not suitable in dynamically changing
environments Not robust against UAV loss
dortmunduniversity
Slide 17
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Mobility Algorithm
Micro Mobility
DeterministicTour Planning
RepellingWalks
Cooperative Area Exploration
StaticFormation
ClusterBreathing
Comm.-awarePotential Fields
Efficient & AutonomousExploration
„Spatial Exploration“ „Connectivity“
Macro Mobility
Communication-aware Mobility
K. Daniel, S. Rohde, N. Goddemeier, C. Wietfeld. “Cognitive Agent Mobility for Aerial Sensor Networks“, IEEE Sensors Journal, Nov 2011
Self-configuringReliable Links with
Guaranteed QoS
dortmunduniversity
Slide 18
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Macro-Mobility for Exploration in unknown environments:Probabilistic movement Random Walk revisits
Self Avoidance Walk deadlocks
Self Repelling Walk Less restrictive than Self
Avoidance Walk Deadlock free
Well distributed UAVs high EDI
BUT: Not communication aware Clusterization
dortmunduniversity
Slide 19
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Macro-Mobility for Global Exploration:Cluster Repelling Walk for Cooperative UAVs
The swarm “performs” a grid-based Self Repelling Walk Macroscopic swarm movement
Each UAV get the same overlay movement vector
Swarm centroid
visited cell
3. Choose neighbor cell with highest coefficient
4. Move complete cluster
0.8
0.5
0.2
0.1
-1
1. Assign randomized coefficient to each neighbor of the swarm centroid
2. cell not visited increase the coefficient cell visited set coefficient to -1
1.5
1.8
1.1
dortmunduniversity
Slide 20
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Micro-Mobility: adapt to changing communication channels
1000
1500
2000
2500
3000
2500 3000 3500 4000 4500 5000 5500
3500
Y-A
xis
[m]
X-Axis [m]
flee
seek
Goodchannel
Badchannel
Example traces of UAV swarm
dortmunduniversity
Slide 21
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Micro Mobility– Cluster Breathing (CB)
Continuous automatic adaptation tochanging channel conditions
dortmunduniversity
Slide 22
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Overlay of communication-aware microscopic with macroscopic behaviour
Static formation of swarmcannot adapt to changing channelcharacteristics
Adaptive behaviour within swarmtaking into account channel characteristics
dortmunduniversity
Slide 23
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Taking into account obstacles: Communication Aware Potential Fields (CAPF)
The total force on each UAV is defined as:a
total number of repelling forces Repelling force of obstacle j to UAV i
a total number of attracting or repelling UAVs Repelling force of UAV j to UAV i
Attracting force of UAV j to UAV i
Attracting force of moving crowd to UAV i
Communication Awareness: Selection of a subset of all UAVs that impose
attracting/repelling forces by means of the RSSI Calculation of force direction and strength by means of
the RSSI cf. Cluster Breathing
dortmunduniversity
Slide 24
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Scenario parameters for performance comparison
1500m
1500
m
Parameter Specification
Number of simulation runs
5-10
Weight of UAV 2 kg
Max. velocity 50 km/h
Number of UAVs 3, 5, 8, 10, 15
Transmit power 20 dBm
Frequency 2,4 GHz
Channel models Free Space / Two-RayAreas of shadowing
Cognitive mobilityalgorithms
Self Repelling WalkDetermin. Tour Plan.Coop. Repelling WalkComm.-AwarePotentialFields
Distortion areas
dortmunduniversity
Slide 25
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Spatial Exploration Ratio (SER)
DTP: Best SER, but not communication-aware (theoretical limit) Self-Repelling Walk: fast exploration, but severe separations!
Communication-aware strategies are able to explore an area (high SER)
und keep swarm coherence (low CSR) at the same time!
Reference: Self Repelling Walk
CAPF/CB
Reference: DTP
Clu
ster
Sep
arat
ion
(CS
R)
SRW CAPF/CB0
1
2
3
4
5
DTP
dortmunduniversity
Slide 26
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Exploration Distribution Index (EDI)
Potential Fields / Cluster Breathing performs worse than Self Repelling walk but better than Deterministic Tour Planning
Reference: DTP
Reference: SelfRepelling Walk
Cluster Breathing/CAPF
EDI0
“unequal“
EDI1
“equal“
dortmunduniversity
Slide 27
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Scalability of sensor swarm
0
10
20
30
40
60
50
70
80
90
100
Spa
tialE
xplo
ratio
n R
atio
(SE
R)
0 30 60 90 120 150 180 210 240 270 300Time [min]
10 nodes
Scenario: Cluster Breathing & Cluster Repelling Walk
8 nodes
5 nodes
3 nodes
15 nodes
12,6% 9,6% 7,0% 6,4% 4,8%
SE
R [%
] / N
odes
3 5 8 10 15Nodes
after 60 minutes
dortmunduniversity
Slide 28
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Useful to detect unvisible threats such as radiationDetection after 30 min
Most recent Refinements: Detection of Plume Barrier
Detection after 60 minDetection after 90 minDetection after 120 minDetection after 150 min
D. Behnke, Patrick-Benjamin Bök, C. Wietfeld. ''UAV-based Connectivity Maintenance for Borderline Detection'', IEEE 77th Vehicular Technology Conference (VTC-Spring), Dresden, Germany, Jun 2013
dortmunduniversity
Slide 29
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Comparison of novel communication-aware algorithmsAlgorithm Communication Robustness /
Self-OrganizationGlobal Spatial
Exploration Ratio
Plume BorderDetection
RatioDTP
Self RepellingWalk
CooperativeRepelling +ClusterBreathing
CooperativeRepelling +Distributed Dispersion Detection(DDD)
Task-specific adaptations lead to improve service performancecombined with reliable communication behaviour
dortmunduniversity
Slide 30
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 31
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Role-based Relaying Strategies
Release ofautonomouscluster
Exploration Volume
Ground Stations
T ::
Scenario : m x1500m x 1500m
2A A .11 5 - - .
ask Exploration of VolumeSteering CAPF combined with CRW
Size 1500Number of UAVs 5A G UMTS (2,1 GHz) with realistic A2G channel
2 IEEE802 a, GHz Band,omni direct antenna
01500
Exploration Time [min]300
50
100
Spa
tial
Expl
orat
ion
Rat
io[%
]
No Return & ReleaseExploration volume limiteddue to range of ground network
Communication-AwarePotential Fields withReturn & Release
Air-to-AirCoverage
ArticulationPoint
Air-to-GroundCoverage
Air-to-GroundRelay
Return ofautonomouscluster
N. Goddemeier, K. Daniel and C. Wietfeld, "Role-Based Connectivity Management with Realistic Air-to-Ground Channels for Cooperative UAVs", IEEE Journal on Selected Areas in Communications (JSAC), June 2012.
dortmunduniversity
Slide 32
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Exemplary study in realistically modelled scenario
2 UAVs (scout and relay) connected to ground station in multi-hop scenario –position of UAVs adapted due to shadowing of buildings
dortmunduniversity
Slide 33
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 34
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Different routing protocol options analyzed:
Secure Wireless Mesh Networks for collaborative UAVs:
Reactive: AODV, DYMO Proactive:OLSR, BATMAN, BATMAN-AdvancedHybrid: HWMP
Our new approach:Reactive + Secure: PASER
EncryptedRouting Messages
EncryptedData Packets
Mesh LinkLegende:
UAV 1 Sender
UAV 2
UAV 3
UAV 4
GatewayDestination
Data Centre
Sbeiti, M., Wietfeld, C., "PASER: Position Aware Secure and Efficient Mesh Routing Protocol", IETF Internet Draft, November 2012. [draft-sbeiti-karp-paser-00]
dortmunduniversity
Slide 35
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Attacker drops encrypted data frames > 1300 Bytes (e.g., videopackets)
Standard WLAN/Internet security mechanisms not sufficientExample routing attack: Wormhole
EncryptedRouting Messages
EncryptedData Packets
Mesh LinkLegende:
UAV 1 Sender
UAV 2
UAV 3
UAV 4
UAV1: How can Ireach the Gateway? UAV3: How can UAV1
reach the Gateway?
UAV2: How can UAV1reach the Gateway?
UAV4: How can UAV1, UAV2 reach the Gateway?
UAV1: How can Ireach the Gateway?
UAV4: How can UAV1, UAV3 reach the Gateway?
Gateway ismy directneighbour
Wormhole Tunnel
UAV1: How can Ireach the Gateway?
Gateway: UAV1 reachsme directly
UAV1 is my directneighbour Gateway
Destination
Attacker only forwards encrypteddata frames < 500 Bytes ( thresholdfor routing messages)
Gateway: UAV1 reachsme via UAV2, UAV4Gateway: UAV1 reachsme via UAV3, UAV4
dortmunduniversity
Slide 36
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
UAV1: How can Ireach the Gateway?
PositionSender
UAV4: How can UAV1, UAV2 reach the Gateway?
PositionSender, UAV2, UAV4
UAV4: How can UAV1, UAV3 reach the Gateway?
PositionSender, UAV2, UAV4
UAV1: How can Ireach the Gateway?
PositionSender
UAV1: How can Ireach the Gateway?
PositionSender
How Does PASER Combat the Wormhole Attack?
ProtectedRouting Messages
Mesh LinkLegende:
WMNS: Wireless Mesh Networks; UAVs: Unmanned Area Vehicles
UAV 1 Sender
UAV 2
UAV 3
UAV 4
Wormhole Tunnel
UAV1 is reachablevia UAV4, UAV2 Gateway
DestinationUAV2: How can UAV1reach the Gateway?
PositionSender, UAV2
UAV3: How can UAV1reach the Gateway?
PositionSender, UAV3
Incoming PASER packet…- allowed distance: 250m- acquiring GPS position…- measured distance: 800m
Discarding packet!Deleting neighbor!Updating all routes via neighbor!
800m
dortmunduniversity
Slide 37
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Experimental Validation of PASER in Wormhole Attack
Iperf UDP Client 3.5Mb/s Iperf UDP Server
M. Sbeiti, J. Pojda and C. Wietfeld, "Performance Evaluation of PASER - an Efficient Secure Route Discovery Approach for Wireless Mesh Networks", 23rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Sydney, Australia, Sep 2012.
dortmunduniversity
Slide 38
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
M. Sbeiti, J. Pojda and C. Wietfeld, "Performance Evaluation of PASER - an Efficient Secure Route Discovery Approach for Wireless Mesh Networks", 23rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Sydney, Australia, Sep 2012.
HWMP+SAE OLSR+WPA2
Impact of the Wormhole Attack in an experimental Testbed
PASER is robust against wormhole attack, due to its security features and its geographical leash mechanisms
Reliable Network in case of PASER
Sabotaged Network Despite the IEEE Security Frameworks
PASER HWMP+SAE OLSR+WPA2
Wor
mho
leA
ctiv
atio
nPe
riod
dortmunduniversity
Slide 39
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 40
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
3D Visual Exploration Service
Efficient UAVs withintegrated embedded PC and integrated camera
High datarate meshcommunication forpayload data
Live Task Assignmentand intelligent UAV remote trajectoryalgorithms for 3D reconstruction
Live image transmissionto quasi-online 3D reconstruction process
Principal ReconstructionPoint
dortmunduniversity
Slide 41
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
- 3D reconstructionstarts after first3 Images (<1Min)
- 3 minutes and 6 images after Take-Off thereis already a partial 3D model withsignificantdetails
- Shown result is~10min after Take-Off
Live 3D Reconstruction During Flight Time
dortmunduniversity
Slide 42
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Content
Applications for Collaborative UAV Systems
System Architecture of Service Platform
Selected Platform Services: Communication-aware Networking Algorithms
Dynamic Role Management and Task Assignment
Secure Wireless Mesh Networks for UAV Swarms
Example Application Services Real-time 3D Virtualization
Aerial Relays for Ad-hoc LTE Network Provisioning
Conclusion & Outlook
dortmunduniversity
Slide 43
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Example: Cell OverloadCompensation
Methodology: Overload scenarios are being
resolved by moving mobile eNodeBs towards the overload area
Benefits: Spectral Efficiency Gains Coverage Gains Traffic Offloading
eNodeB 2
Cell overloadmobile eNodeB
eNodeB 1
Where is the best place to deploy the eNodeB?
S. Rohde, M. Putzke, C. Wietfeld. ''Ad Hoc Self-Healing ofOFDMA Networks Using UAV-Based Relays'', Journal on Ad Hoc Networks (Elsevier), Jul 2012.
dortmunduniversity
Slide 44
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Simulation results: scenario overload situation Simulated using NS-3 „Lena“ Linear Movement of mobile LTE eNodeBs
UE Association (Best-Server)
dortmunduniversity
Slide 45
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Conclusion and Outlook
Benefits of UxV-Service Platform: Cooperative UAVs can increase the efficiency of task execution
significantly. Dynamically changing communication channels require for channel
adaptive and cognitive swarm mobility CNI UxV service platform automatically manages the trade-off
between application service (e.g. exploration) and communication reliability
Application developers can focus on their applications tasks!
On-going work: New use cases: CNI UxV service platform to be leveraged for
precision farming, critical infrastructure inspection, etc. Heterogenous UxVs: Additional UxVs from different suppliers will be
integrated via the service platform to collaborate.
dortmunduniversity
Slide 46
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
See you in December 2013 in Atlanta
www-wi-uav.org
Thank you for your attention!
4th IEEE GLOBECOM Wi-UAV International Workshop on
wireless networking & control for unmanned autonomous systems
dortmunduniversity
Slide 47
Communication Networks InstituteProf. Dr.-Ing. C. Wietfeld
Communication-aware Service Platform for Collaborative UAV applications
Contact Information
Address:TU Dortmund UniversityCommunication Networks InstituteOtto-Hahn-Str. 644227 Dortmund
Germany
Head of InstituteProf. Dr.-Ing. Christian Wietfeld
Tel.: +49 231 755 4515Fax: +49 231 755 6136e-mail: [email protected]: http://www.cni.tu-dortmund.de
Thank you for your attention!