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Saleh Almowuena, PhD

Assistant Professor

Department of Computer Engineering

علوم الحاسب والمعلومات
Building 31, Office No. 2185
publication
Journal Article
2016

Mobile Video Streaming over Dynamic Single Frequency Networks

Almowuena, Saleh . 2016

The demand for multimedia streaming over mobile networks has been steadily increasing in the past several years. For instance, it has become common for mobile users to stream full TV episodes, sports events, and movies while on the go. Unfortunately, this growth in demand has strained the wireless networks despite the significant increase of their capacities with recent generations. Hence, efficient utilization of the expensive and limited wireless spectrum remains an important problem, especially in the context of multimedia streaming services that consume a large portion of the bandwidth capacity. In this paper, we introduce the idea of dynamically configuring cells in wireless cellular networks to form single frequency networks based on the multimedia traffic demands from users in each cell. We formulate the resource allocation problem in such complex networks with the goal of maximizing the number of served multimedia streams, and we prove that this problem is NP-Complete. Then we present an optimal solution to maximize the number of served multimedia streams within a cellular network. This optimal solution, however, may suffer from an exponential time complexity in the worst case, which is not practical for real-time streaming over large-scale networks. Therefore, we propose a heuristic algorithm with polynomial running time to provide faster and more practical solution for real-time deployments. Through detailed packet-level simulations, we assess the performance of the proposed algorithms with respect to the average service ratio, energy saving, video quality, frame loss rate, initial buffering time, rate of re-buffering events, and bandwidth overhead. We show that the proposed algorithms achieve substantial improvements in all of these performance metrics compared to the state-of-the-art approaches. For example, for the service ratio metric, our algorithms can serve up to 11 times more users compared to the unicast approach, and they achieve up to 54% improvement over the closest multicast approaches in the literature.

Volume Number
12
Issue Number
5s
Conference Location
Portland, Oregon
Conference Name
ACM Multimedia Systems Conference (MMSys’15)
Magazine \ Newspaper
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM)
Pages
27
more of publication
publications

Understanding node mobility is critical for the proper simulation of mobile devices in a wireless network. However, current mobility models often do not reflect the realistic movements of users…

by Mohammed Alenazi, Shatha Abbas, Saleh Almowuena, Maazen Alsabaan
2020
publications

Network function virtualization (NFV) and software-defined networking (SDN) are two technologies that have emerged to reduce capital and operational costs, and to simplify network management.

by Mohammed Alenazi, Abdulrahman Almutairi, Saleh Almowuena, Abdul Wadood, Egemen Çetinkaya
2020
publications

Free-viewpoint video (FVV) applications enable viewers to interactively change their viewing point and watch a scene from different angles. Each FVV is composed of multiple streams representing…

by Ahmed Hamza, Hamed Ahmadi, Saleh Almowuena, Mohamed Hefeeda
2017