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This paper proposes a packet scheduling scheme thatoptimizing the coded video transmission overmultipath wireless multimedia sensor networks interms of received video distortion and power efficiencyenhances the security aspects of the underlyingsystem.When the aggregate transmission rateavailable at the network cannot support the requiredtransmission rate,the scheduling algorithm can selectivelydrop combinations of video packets prior totransmission to adapt the rate of the sender to thelimitations of the wireless channel capacity.Twoscheduling algorithms are proposed.The Baselinescheme utilizes a novel distortion prediction modeland decides upon which packet can be dropped priorto transmission based on the packet’s impact on thevideo distortion.In addition to the bandwidthlimitations,the Power aware packet scheduling is an extension of the Baseline capable of estimating thepower that will be consumed by each node during thetransmission;hence it can control the power consumptionby selectively drop packets of low importanceto the decoded video.Simulation results indicatethe efficiency of the proposed scheduling schemein terms of received video distortion(PSNR)andpower consumption.
This paper proposes a packet scheduling scheme that optimizing the coded video transmission overmultipath wireless multimedia sensor networks interms of received video distortion and power efficiency enhances the security aspects of the underlyingsystem. When the aggregate transmission rate available at the network can not support the required transmission rate, the scheduling algorithm can selectivelydrop combinations of video packets prior totransmission to adapt the rate of the sender to the limitations of the wireless channel capacity.Twoscheduling algorithms are proposed.The Baselinescheme utilizes a novel distortion prediction modeland decides upon which packet can be dropped priorto transmission based on the packet’s impact on thevideo distortion. addition to addition to the bandwidth limitations, the Power aware packet scheduling is an extension of the Baseline capable of estimating the power that will be consumed by each node during the transmission; hence it can control the power consumption by sele ctively drop packets of low importance to the decoded video. Simulation results indicate the efficiency of the proposed scheduling scheme in terms of received video distortion (PSNR) and power consumption.