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APPLICATION-AWARE OPTIMIZATION OF PACKET SCHEDULING FOR VIDEO COMMUNICATIONS OVER INTERVEHICLE AD HOC NETWORKS
| Content Provider | CiteSeerX |
|---|---|
| Author | Masala, Enrico |
| Abstract | This paper focuses on optimizing real-time intervehicle video com-munications from an image analysis perspective. Differently from traditional multimedia communication schemes which are typically optimized to maximize perceptual quality as perceived by human users, in this work we propose a new packet importance estimation method designed to capture the contribution of each packet to the performance of the image analysis process. Packet importance val-ues are used to optimize video packet scheduling and retransmission in the context of ad hoc 802.11 intervehicle communications. Sim-ulations using actual intervehicle transmission traces show PSNR gains up to 2.3 dB and 0.8 dB compared with the standard MAC-layer ARQ and a distortion based optimized ARQ technique respec-tively, as well as up to 10 % accuracy increase with the tested image analysis algorithm. Index Terms — Intervehicle communications, low-delay video, application-aware packet scheduling |
| File Format | |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
