Saleh abdallah-saleh

Publications (3) View all

• Conference Proceeding: Handover evaluation for mobile video streaming in heterogeneous wireless networks

  Abdallah-Saleh, Saleh, Wang, Qi, Grecos, Christos, Thomson, Duncan
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  ABSTRACT: Abstract—Current market trends have enabled mobile users to rely increasingly on wireless devices to receive and stream video applications in their daily lives. These multihomed devices are capable of changing point of connection while roaming in current heterogeneous wireless networks, due to their multi-access radio interfaces. However, services handover between two wireless cells of same radio access technology (RAT), or of different RATs present various challenges. In this study, we evaluate mobile video streaming in heterogeneous wireless networks using WiFi and WiMAX. Our evaluation framework was based on an experiment through a hybrid network comprising a testbed network and an emulator. H.264/AVC video standard with its increasing dominance was chosen for mobile video streaming. Two scenarios, namely pedestrian and train were implemented for testing based on movement speed of mobile users. Quality of service (QoS) parameters of delay, packet loss and jitter were measured and compared under different scenarios. Experiment results demonstrated a correlation between users’ increased movement speed and increased delays with noticeable video quality degradation during handovers.
  Electrotechnical Conference (MELECON), 2012 16th IEEE Mediterranean, Hammamet, Tunisia; 03/2012
• Conference Proceeding: Real-time Video Streaming in Mobile Cloud Over Heterogeneous Wireless Networks

  Saleh Abdallah-Saleh, Qi Wang, Christos Grecos
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  ABSTRACT: Recently, the concept of Mobile Cloud Computing (MCC) has been proposed to offload the resource requirements in computational capabilities, storage and security from mobile devices into the cloud. Internet video applications such as real-time streaming are expected to be ubiquitously deployed and supported over the cloud for mobile users, who typically encounter a range of wireless networks of diverse radio access technologies during their roaming. However, real-time video streaming for mobile cloud users across heterogeneous wireless networks presents multiple challenges. The network-layer quality of service (QoS) provision to support high-quality mobile video delivery in this demanding scenario remains an open research question, and this in turn affects the application-level visual quality and impedes mobile users’ perceived quality of experience (QoE). In this paper, we devise a framework to support real-time video streaming in this new mobile video networking paradigm and evaluate the performance of the proposed framework empirically through a lab-based yet realistic testing platform. One particular issue we focus on is the effect of users’ mobility on the QoS of video streaming over the cloud. We design and implement a hybrid platform comprising of a test-bed and an emulator, on which our concept of mobile cloud computing, video streaming and heterogeneous wireless networks are implemented and integrated to allow the testing of our framework. As representative heterogeneous wireless networks, the popular WLAN (Wi-Fi) and MAN (WiMAX) networks are incorporated in order to evaluate effects of handovers between these different radio access technologies. The H.264/AVC (Advanced Video Coding) standard is employed for real-time video streaming from a server to mobile users (client nodes) in the networks. Mobility support is introduced to enable continuous streaming experience for a mobile user across the heterogeneous wireless network. Real-time video stream packets are captured for analytical purposes on the mobile user node. Experimental results are obtained and analysed. Future work is identified towards further improvement of the current design and implementation. With this new mobile video networking concept and paradigm implemented and evaluated, results and observations obtained from this study would form the basis of a more in-depth, comprehensive understanding of various challenges and opportunities in supporting high-quality real-time video streaming in mobile cloud over heterogeneous wireless networks.
  Proc. SPIE 8437, 84370S; 05/2012
• Conference Proceeding: Evaluation of mobile video streaming in heterogeneous wireless networks

  Abdallah-Saleh, Saleh, Wang, Qi, Grecos, Christos
  19th Telecommunications Forum, (TELFOR 2011); 11/2011