Abstract
Current scheduling techniques used for cellular networks do not suffice for the emerging multi-rate systems like cdma2000 and High Data Rate (HDR). Real-time applications like video streaming must comprehend the channel conditions and consequently the data rates that are currently being supported; accordingly the content and the amount of data to be transmitted needs to be adapted to the available bandwidth.In this paper, we have considered multimedia (MPEG-4) streaming as the application over HDR and propose a content aware scheduling scheme (CAS) that takes into consideration the different priorities of the MPEG-4 stream content. The proposed transmission scheme considers both the channel conditions as perceived by the user as well as the priority of the streams. In addition, CAS verifies the playout timestamp and discards stale packets ensuring higher throughput in the process. We capture the lag of the proposed adaptation scheme using the Kullback-Leibler distance and show that the rate adaption scheme has a reasonably small lag. Simulation results demonstrate that the proposed scheme results in higher overall peak signal to noise ratio (PSNR) values of the entire movie, lesser number of dropped frames, and a better throughput utilization over existing schemes.
This work is supported by NSF ITR grant IIS-0326505.
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Pal, S., Kundu, S.R., Mazloom, A.R., Das, S.K. (2007). Video Rate Adaptation and Scheduling in Multi-rate Wireless Networks. In: Akyildiz, I.F., Sivakumar, R., Ekici, E., Oliveira, J.C.d., McNair, J. (eds) NETWORKING 2007. Ad Hoc and Sensor Networks, Wireless Networks, Next Generation Internet. NETWORKING 2007. Lecture Notes in Computer Science, vol 4479. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-72606-7_41
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DOI: https://doi.org/10.1007/978-3-540-72606-7_41
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