Dynamic and context-aware streaming adaptation to smooth quality degradation due to IEEE 802.11 performance anomaly
- 47 Downloads
The need for application-level context visibility to properly perform streaming service management in wired-wireless integrated networks is widely recognized. In particular, the paper claims the need for full application-level awareness of context data about the IEEE 802.11 performance anomaly, i.e., when even a single node located at the borders of the coverage area of a Wi-Fi access point produces a relevant degradation in the connectivity quality of all other nodes in the area. We propose a middleware that on the one hand portably predicts and detects anomaly situations via decentralized and lightweight client-side mechanisms and, on the other hand, exploits anomaly awareness to promptly react with application-level management operations (streaming quality downscaling and traffic shaping). In particular, the paper focuses on how our middleware performs anomaly-driven quality downscaling both to preserve the goodput at nodes in well-covered areas and to minimize quality degradations at the clients generating the anomaly. The reported experimental results point out how anomaly prediction/detection can relevantly improve the effectiveness of streaming downscaling, thus allowing to maintain acceptable service quality notwithstanding Wi-Fi anomaly occurrences.
KeywordsService management Wireless networks Streaming adaptation IEEE 802.11 anomaly Middleware
Unable to display preview. Download preview PDF.
- 3.Kounavis ME, Campbell AT (2005) Seamless connectivity in infrastructure-based networks. In: Bellavista P, Corradi A (eds) The handbook of mobile middleware, 1st edn. Chapman and Hall, CRC, New York Google Scholar
- 4.Bellavista P et al. (2005) Application-level middleware to proactively manage handoff in wireless Internet multimedia. In: Proc. of IEEE/IFIP int. conf. on management of multimedia networks and services (MMNS). Springer, New York Google Scholar
- 6.Heusse M et al (2003) Performance anomaly of 802.11b. In: Proc of IEEE annual joint conference of the IEEE computer and communications societies (INFOCOM) Google Scholar
- 7.Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) (1999) IEEE Standard 802.11 Google Scholar
- 8.Garroppo RG et al (2005) The wireless hierarchical token bucket: a channel aware scheduler for 802.11 networks. In: Proc of the IEEE int sym on a world of wireless mobile and multimedia networks (WoWMoM) Google Scholar
- 9.Garroppo RG et al. (2005) TWHTB: a transmission time based channel-aware scheduler for 802.11 systems. In: Proc of the EURASIP workshop on resource allocation in wireless networks (RAWNET). IEEE Computer Society Press, New York Google Scholar
- 10.Garcia-Macias JA et al. (2003) Quality of service and mobility for the wireless Internet. Wirel Netw J 9(4):34–42 Google Scholar
- 12.Bellavista P et al. (2007) Context-aware multimedia middleware solutions for counteracting IEEE 802.11 performance anomaly. In: Proc of int conf on multimedia and ubiquitous engineering (MUE). IEEE Computer Society Press, New York Google Scholar
- 14.Klaue J et al (2003). EvalVid—a framework for video transmission and quality evaluation. In: Proc of the int conf on modelling techniques and tools for computer performance evaluation (TOOLS) Google Scholar