Distortion-Aware Concurrent Multipath Transfer for Mobile Video Streaming in Heterogeneous Wireless Networks

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Engineering

DISTORTION-AWARE CONCURRENT MULTIPATH TRANSFER
FOR MOBILE VIDEO STREAMING IN HETEROGENEOUS
WIRELESS NETWORKS
ABSTRACT
The massive proliferation of wireless infrastructures with complementary characteristics
prompts the bandwidth aggregation for Concurrent Multipath Transfer (CMT) over
heterogeneous access networks. Stream Control Transmission Protocol (SCTP) is the standard
transport-layer solution to enable CMT in multihomed communication environments. However,
delivering high-quality streaming video with the existing CMT solutions still remains
problematic due to the stringent quality of service (QoS) requirements and path asymmetry in
heterogeneous wireless networks. In this paper, we advance the state of the art by introducing
video distortion into the decision process of multipath data transfer. The proposed distortion-
aware concurrent multipath transfer (CMT-DA) solution includes three phases: 1) per-path status
estimation and congestion control; 2) quality-optimal video flow rate allocation; 3) delay and
loss controlled data retransmission. The term ‘flow rate allocation’ indicates dynamically picking
appropriate access networks and assigning the transmission rates. We analytically formulate the
data distribution over multiple communication paths to minimize the end-to-end video distortion
and derive the solution based on the utility maximization theory. The performance of the
proposed CMT-DA is evaluated through extensive semi-physical emulations in Exata involving
H.264 video streaming. Experimental results show that CMT-DA outperforms the reference
schemes in terms of video peak signal-to-noise ratio (PSNR), goodput, and inter-packet delay

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In wireless networks to improve the competence for event account. Due to the in complete transmission size of nodes, a single path often cannot meet the condition of data transmission. Consequently, multipath show is needed. However, not every path originate by multipath routing algorithms maybe appropriate for conveying image, because a extended routing pathway with a long end to end show delay may not satisfied the time constraint. Furthermore, each data stream includes two kinds of material data handover. We have coming a novel explicit rate-based congestion control method, for supportive requests hand over process. Handover Streaming based Congestion Control (HSBCC), a new adaptive media handover streaming congestion organization in which the assembly packet broadcast rate is adjusted rendering to the active bandwidth share of the connection. They prepare not maintain or continually inform their route tables with the newest route in network. If a node requirements to send a pack to another node then this protocol explorations for the route in an on-demand method and begins the joining in order to communicate and receive the packet. The route detection usually happens by flooding the route application packets throughout the network. It makes sense to simply disregard a packet loss due to random frequency errors than to multiplicatively reduction the current transport rate and it is more suitable to periodically investigation the network during interruption period for a prompt retrieval than to slow down and exponentially increase the retransmission timer.

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1. DISTORTION-AWARE CONCURRENT MULTIPATH TRANSFER FOR MOBILE VIDEO STREAMING IN HETEROGENEOUS WIRELESS NETWORKS ABSTRACT The massive proliferation of wireless infrastructures with complementary characteristics prompts the bandwidth aggregation for Concurrent Multipath Transfer (CMT) over heterogeneous access networks. Stream Control Transmission Protocol (SCTP) is the standard transport-layer solution to enable CMT in multihomed communication environments. However, delivering high-quality streaming video with the existing CMT solutions still remains problematic due to the stringent quality of service (QoS) requirements and path asymmetry in heterogeneous wireless networks. In this paper, we advance the state of the art by introducing video distortion into the decision process of multipath data transfer. The proposed distortion- aware concurrent multipath transfer (CMT-DA) solution includes three phases: 1) per-path status estimation and congestion control; 2) quality-optimal video flow rate allocation; 3) delay and loss controlled data retransmission. The term ‘flow rate allocation’ indicates dynamically picking appropriate access networks and assigning the transmission rates. We analytically formulate the data distribution over multiple communication paths to minimize the end-to-end video distortion and derive the solution based on the utility maximization theory. The performance of the proposed CMT-DA is evaluated through extensive semi-physical emulations in Exata involving H.264 video streaming. Experimental results show that CMT-DA outperforms the reference schemes in terms of video peak signal-to-noise ratio (PSNR), goodput, and inter-packet delay

Distortion-Aware Concurrent Multipath Transfer for Mobile Video Streaming in Heterogeneous Wireless Networks

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Distortion-Aware Concurrent Multipath Transfer for Mobile Video Streaming in Heterogeneous Wireless Networks