Shadi Bikas

Bio: Shadi Bikas is an academic researcher from Ege University. The author has contributed to research in topics: The Internet & Codec. The author has an hindex of 1, co-authored 2 publications receiving 3 citations.

Evaluation of MPTCP congestion control for DASH

Abstract: Dynamic Adaptive HTTP Streaming (DASH) is a popular MPEG standard. In DASH systems, the clients adapt quality based on the observed network and internal parameters in order to achieve high Quality of Experience (QoE). The throughput of Internet applications can be increased if the underlying transport protocol utilizes the network conditions by using multiple end-to-end connections. MPTCP is a recent technology that allows clients to open multiple TCP connections without requiring a change in the client software. In this paper, we investigate the performance of MPTCP when DASH clients use this protocol. The experimental results show that QoE achieved by the clients significantly changes due to congestion control algorithm that MPTCP uses.

SDN-CPS: Selecting codec, path and server for video streaming over SDN

Abstract: Advantages of Software Defined Networks (SDN) technology, which decouples control and transmission planesof computer networks, provides the infrastructure that can help to improve the system performance of video streaming applications, one of today's popular Internet applications. The SDN controller may assist the clients by using the network statistics while determining the routes of the appropriate streaming paths in the physical network. In this study, a layered video streaming architecture is proposed, in which SDN controller recommends a server, video codec, and the optimal number of video layers to clients, with taking into account the server load and network status. Performance of the proposed system is given comparatively and it has been shown that the system parameters considered can help to improve the video streaming system performance.

Numerical evaluation of MPTCP schedulers in terms of throughput and reliability

Abstract: In order to sustain the connectivity in case of a technology related disaster, providing multipath connection infrastructure can be an alternative. Multipath TCP (MPTCP) is a transport layer protocol which allows more than one path to transfer TCP segments by utilizing multi-homed devices. MPTCP can be used for minimizing the connectivity problems in case of a failure. It is known that the performance of MPTCP can be increased if the paths for the subflows are carefully chosen by considering the disjointness and end-to-end delay of the paths. On the other hand, the scheduler affects the performance of MPTCP especially when connectivity problems exist. In this paper, we investigate the performances of different MPTCP schedulers and show how the selection of the paths for MPTCP subflows affect communication performance in case of link failures.

Performance of DASH over Multipath TCP

Abstract: Recently, dynamic adaptive streaming over HTTP (DASH) is a dominated traffic in Internet. The client requests a suitable representation depending on the current network condition. On the other hand, multipath transmission control protocols emerges as potential data transmission utilizing multiple network paths concurrently. In this paper, we conduct extensively experiments to evaluate the performance of DASH over MPTCP. Four different performance metrics are investigated, i.e., time on high quality, impactful switches, switch frequency, and average bitrate. The results show that the performance of DASH decreases when the paths of MPTCP have different bandwidths.