Using RTT Variability for Adaptive Cross-Layer Approach to Multimedia Delivery in Heterogeneous Networks

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Using RTT Variability for Adaptive Cross-Layer Approach to Multimedia Delivery in Heterogeneous Networks

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/8178

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dc.contributor.author Choi, Baek-Young
dc.contributor.author Song, Sejun
dc.contributor.author Wang, Yue
dc.contributor.author Park, Eun Kyo
dc.date.accessioned 2010-08-05T19:30:18Z
dc.date.available 2010-08-05T19:30:18Z
dc.date.issued 2009-10
dc.identifier.citation Baek-Young Choi; Sejun Song; Yue Wang; Eun Kyo Park; , "Using RTT Variability for Adaptive Cross-Layer Approach to Multimedia Delivery in Heterogeneous Networks," Multimedia, IEEE Transactions on , vol.11, no.6, pp.1194-1203, Oct. 2009. en
dc.identifier.issn 1520-9210
dc.identifier.uri http://hdl.handle.net/10355/8178
dc.description.abstract A holistic approach should be made for a wider adoption of a cross-layer approach. A cross-layer design on a wireless network assumed with a certain network condition, for instance, can have a limited usage in heterogeneous environments with diverse access network technologies and time varying network performance. The first step toward a cross-layer approach is an automatic detection of the underlying access network type, so that appropriate schemes can be applied without manual configurations. To address the issue, we investigate the characteristics of round-trip time (RTT) on wireless and wired networks. We conduct extensive experiments from diverse network environments and perform quantitative analyses on RTT variability. We show that RTT variability on a wireless network exhibits greatly larger mean, standard deviation, and min-to-high percentiles at least 10 ms bigger than those of wired networks due to the MAC layer retransmissions. We also find that the impact of packet size on wireless channel is particularly significant. Thus through a simple set of testing, one can accurately classify whether or not there has been a wireless network involved. We then propose effective adaptive cross-layer schemes for multimedia delivery over error-prone links. They include limiting the MAC layer retransmissions, controlling the application layer forward error correction (FEC) level, and selecting an optimal packet size. We conduct an analysis on the interplay of those adaptive parameters given a network condition. It enables us to find optimal cross-layer adaptive parameters when they are used concurrently. en
dc.description.sponsorship IEEE Circuits & Systems Society en
dc.language.iso en_US en
dc.publisher IEEE en
dc.subject Access Protocols en
dc.subject Radio access networks en
dc.subject Time-varying networks en
dc.subject.lcsh Multimedia communications en
dc.subject.lcsh Internet Protocol multimedia subsystem en
dc.subject.lcsh Wireless communication systems en
dc.title Using RTT Variability for Adaptive Cross-Layer Approach to Multimedia Delivery in Heterogeneous Networks en
dc.type Article en


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