Sensor Network with Mobile Access:Sensor Network with Mobile Access:Network-Based ControlNetwork-Based Control

((An Experimental Testbed)An Experimental Testbed)

Youngchul SungYoungchul Sung

Adaptive Communications and Signal Processing GroupAdaptive Communications and Signal Processing Group

School of Electrical & Computer EngineeringSchool of Electrical & Computer Engineering

Cornell UniversityCornell University

Ithaca, NY 14853Ithaca, NY 14853

Sensor Network with Mobile Sensor Network with Mobile AccessAccess

Minimal Low Power SensorsMinimal Low Power Sensors Local sensor Local sensor

communicationscommunications Opportunistic multiaccess Opportunistic multiaccess

to mobile access pointsto mobile access points

Powerful Mobile Access PointsPowerful Mobile Access Points Data collection and Data collection and

transporttransport Network managementNetwork management

OpportunisticProtocol

Network-Based Control (NBC)Network-Based Control (NBC)using SENMAusing SENMA

Sensor network based controlSensor network based control Large sensor network distributed on a wide Large sensor network distributed on a wide

areaarea Unmaned vehicle/Mobile access pointUnmaned vehicle/Mobile access point Local communication between MAP and Local communication between MAP and

sensorssensors Estimation of target location and movement Estimation of target location and movement

controlcontrolEx. Target tracking based on distributed sensor dataEx. Target tracking based on distributed sensor data

Target

Functional Block of NBCFunctional Block of NBC

Sensor Network

Mobile Access Point (UAV)

Location Device

SensingSignal processingDOA estimation, etc

CommunicationNetworkingSensor localization

Location monitoringData fusionControl of UAV

UAV Movement ControlUAV Movement Control

Sensor dataFusion/control algorithm

Location informationMovement control

Previous sensor data

System ConfigurationSystem Configuration

Implemented SystemImplemented System

Image Extraction for Precision Control Image Extraction for Precision Control (IEPG)(IEPG)

Uplink Opportunistic Packet Uplink Opportunistic Packet CommunicationCommunication

FrameMaker Preamble Training Sensor ID BatteryLevel Sensor Data FEC

Uplink Packet FormatUplink Packet Format

Downlink CommunicationDownlink Communication Beacon transmissionBeacon transmission Channel state estimation/Opportunistic transmissionChannel state estimation/Opportunistic transmission

Multiaccess Receiver DesignMultiaccess Receiver Design

FDMA-based Uplink Receiver Structure

Related Research IssuesRelated Research IssuesResearch Topics Research Topics

Combining large sensor network and controlCombining large sensor network and control Network-based signal processing: Ex. DOA Network-based signal processing: Ex. DOA

estimationestimation Data fusionData fusion Sensor localization using UAVSensor localization using UAV

Potential Applications Potential Applications MilitaryMilitary CommercialCommercial

Live DemoLive Demo

Sensor-Directed Guidance for Unmaned Sensor-Directed Guidance for Unmaned VehicleVehicle

1.1. Target location settingTarget location setting

2.2. Emulating DOA estimationEmulating DOA estimation

3.3. Start operationStart operation1.1. Local data collectionLocal data collection

2.2. UAV location extractionUAV location extraction

3.3. Estimating target locationEstimating target location

4.4. Movement controlMovement control