Page 267 - ITU Kaleidoscope 2016

Poster Session

P.1 Adaptive video streaming over HTTP using stochastic bitrate prediction in 4G wireless
networks.
Dhananjay Kumar; S. Aishwarya; A. Srinivasan; L. Arun Raj (Anna University, India)
Video streaming over Hypertext Transfer Protocol (HTTP) used in multifarious applications
creating a multimedia environment faces a challenge in 4G wireless network due to the
fluctuating nature of internet traffic and variable capacity of wireless channel over time. The
existing Dynamic Adaptive Streaming over HTTP (DASH), though works well for stored video
up to some extent, poses a complication in live transmission thereby depreciating the streaming
quality due to high link bit rate fluctuation. In this paper, we have proposed an efficient ARIMA
Based Bit Rate Adaptation (ABBA) model in the receiver/client side that estimate the link traffic
based on the incoming packet bit rate to predict the subsequent future link capacity in order to
notify the sender/server. Based on the response from the receiver the server adapt its outgoing
stream as per forecasted link data rate, and hence eliminate the degradation of video due to
channel throughput variations. The proposed ABBA algorithm was implemented on IP over 4G
wireless network and the streaming quality was evaluated on several full reference metrics of
video quality. The test result outperformed an existing buffer based approach and also a fuzzy
based adaptation algorithm. For example, the ABBA algorithm exhibited an average increase of
22 % in PSNR and 9% in SSIM than a buffer based method.

P.2 Assessing Internet performance over mobile networks: from theory to practice.
Eneko Atxutegi; Jose Oscar Fajardo; Eva Ibarrola; Fidel Liberal (University of the Basque
Country-UPV/EHU, Spain)

The proper execution of performance tests is of utmost importance for the analysis and
evaluation of Internetrelated technologies, protocols and deployment strategies. There are plenty
of tools available for experimenters ranging from simulation tools, emulation equipment, to
small and large scale experimentation testbeds. Each of these performance evaluation
frameworks introduces a series of capabilities and drawbacks. Additionally, there is a need for
using a common methodology to perform different performance tests and to create comparable
outcomes. Seeking for the standardization of reliable and comparable Internet speed
measurements and trying to provide end-users with trustworthy measurement tools, different
SDOs have standardized different measurement methodologies. This paper focuses on the
applicability of the distinct measurement frameworks and methodologies in the field of mobile
Internet, with special focus on the impact of using TCP over mobile broadband connections. The
paper describes a series of experiments over different frameworks and, based on the obtained
results, identifies the implications of the different types of performance tests into the evaluation
outcomes and states the need for large scale measurements.

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