a smart multi-hop hierarchical routing protocol for efficient video communication over wireless...
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ICC SCPA 2012 workshopTRANSCRIPT
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A smart Multi-hop hierarchical routing protocol for Efficient VIdeo
communication over wireless multimedia sensor networks - MEVI
D. Rosário, R. Costa, H. Paraense, K. Machado,
E. Cerqueira and T. Braun
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OverviewIntroductionRelated WorkMEVI - Concept and Protocol
OperationEvaluationConclusions
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Introduction to WMSNs IMultimedia content has growing
importance. Availability of inexpensive
hardware such as sensors, CMOS cameras, and microphones allow capturing multimedia sensor data from the environment.
Wireless Multimedia Sensor Networks (WMSNs) for carrying multimedia data needed
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Introduction to WMSNs IIMultimedia content can enhance
sensor data information collected.WMSNs will enable a wide range of
potential applications in both civilian and military areas, which require audio and video information, e.g.,◦ Traffic management◦ Environmental monitoring◦ Video surveillance◦ Industrial process control◦ Smart cities
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WMSN Challenges IMultimedia content generates
huge amount of data to be transmitted over WMSNs.
WMSNs are restricted in terms of◦Energy◦Bandwidth◦Memory◦Processing capabilities
An event-driven approach should be used to avoid redundant video transmission.
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WMSN Challenges IIEfficient and reliable
communication between the nodes should be used considering◦Multi-hop communications◦Cross-layer mechanism to select
routesDelivery of multimedia content
with a minimal level of quality according to QoS and QoE metrics.
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WMSN Challenges IIIExisting hierarchical routing
protocols have certain drawbacks◦High overhead for cluster creation◦Lack of efficient multi-hop
communication◦Lack of an efficient cross-layer
approach to select routes based on information about link quality level, available energy, energy consumption
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Multi-hop hierarchical routing protocol for Efficient VIdeo communication (MEVI) IMEVI considers
◦use of heterogeneous nodes◦hierarchical architecture◦event-based application
MEVI addresses mentioned drawbacks and provides◦Scalability◦Reliability◦High quality videos◦Energy-efficiency
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Multi-hop hierarchical routing protocol for Efficient VIdeo communication (MEVI) IIMEVI concepts
◦Opportunistic scheme for cluster formation with a minimal overhead
◦Multi-hop communication between cluster heads (CHs) and base station (BS)
◦Cross-layer scheme to select routes based on link quality and energy parameters
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Related Work
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Related WorkLEACH EEQAR PEMuR
Multimedia data transmission
Periodically Periodically Periodically
Cluster formation
Distributed Distributed Centralized
Messages for cluster formation
BeaconJoinSchedule
Not Specified
Schedule from BS and from CHAdvertisementElected CHJoin
Multi-hop Single-hop Multi-hop Multi-hop
Cross-layer to select routes
n/a QoS Residual Energy
11
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MEVI – Concept and Protocol Operation
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Target Scenario
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Protocol Operation IMultimedia transmissions are triggered by
sensors.Two operational modes
◦ Normal mode Multimedia transmission is requested by BS when a
possibility of an event occurrence is detected (soft threshold).
◦ Event mode Nodes start multimedia transmissions when event has
been detected (hard threshold).
Two communication periods◦ Intra-cluster◦ Inter-cluster
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Protocol Operation II
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Intra-Cluster Communication IPeriod designated to nodes (non-
CHs)◦Cluster creation◦Cluster members send sensed values
to CHs.Clusters are created with minimal
overhead using an opportunistic scheme based on transmissions of ◦Beacons and◦Data
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Intra-Cluster Communication II
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Inter-Cluster Communication IPeriod when CHs and BS
communicate with each other using multi-hop communication. ◦CHs send aggregate packets to BS.◦BS requests multimedia content for a
CH.◦CH sends multimedia data.
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Inter-Cluster Communication IIMEVI exploits a reactive scheme
to find routes from CHs to BS on-demand.
Reactive route discovery applies usual scheme using route request and reply messages.
Each path has associated a Path Quality (PQ), which is used to identify best routes.
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Performance Evaluation
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Simulation Parameters
secondseconds
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Network Lifetime – Scenario 1
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Network Lifetime – Scenario 2
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Video Quality Level
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Video Quality Level: SSIMVideo quality for a node, which is
36 m away from BS
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Video Quality Level: VQM
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Video Quality
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A smart Multi-hop hierarchical routing protocol for Efficient VIdeo
communication over wireless multimedia sensor networks - MEVI
D. Rosário, R. Costa, H. Paraense, K. Machado,
E. Cerqueira and T. Braun ([email protected])