Optimal Cache Placement and Migration for Improving the Performance of Virtualized SAND

Kalan, Reza Shokri; Sayıt, Müge; Clayman, Stuart

doi:10.1109/netsoft.2019.8806640

Cited by 5 publications

(13 citation statements)

References 10 publications

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“…Adaptive streaming technologies provides a performance management technique that offers huge potential for OTT (Over-the-top) multimedia streaming. Thus, HTTP streaming has become a popular solution in commercial deployments [4]. The MPEG group introduced standardized DASH adaptive video applications which is later supported by SAND technology.…”

Section: Background and Related Work A Adaptive Video Streamingmentioning

confidence: 99%

“…Buffer fullness or recently requested video quality can be given as examples to such client parameters [6]. On the other hand, DANEs help DASH clients to achieve better adaption by sending information about cached segments, alternative segment availability, possible delivery time, network throughput and QoS via PER messages [4], [6]. In conventional web and CDN caching mechanisms, content is proactively pushed to edge servers rely on prior knowledge of content demand and network structure which means that cache location is static.…”

Section: Background and Related Work A Adaptive Video Streamingmentioning

confidence: 99%

“…In [20] we introduced vDANE concept as a NFV function and proposed a solution for deployment additional virtual caches in term of vDANE. In [4], we leveraged SAND characteristic and proposed a solution to the problem of selecting the location of the initial vDANE. The proposed algorithm continuously monitoring user distribution as well as network conditions and migrates vDANE in other to provide seamless quality service to end users.…”

Section: B Utilizing Nfv and Sdn In Caching For Adaptive Video Streamentioning

confidence: 99%

“…Suppose there is no vDANE instance in the network or the existing vDANE instance is decided to be migrated by the controller in a particular moment. In both cases, the SDN controller selects an optimal place for vDANE instance and this selection is done by considering a value which we call P ressureInitialCache (PIC) and introduce in our previous work [4]. This value basically shows the pressure of vDANE instances by taking into account the network topology, distribution of the clients and current traffic.…”

Section: Deploying Vdanes In Sand Based Architecture a General mentioning

confidence: 99%

“…The location of the cache plays an important role in the performance of video streaming applications. In our previous study [4], we implemented a virtual cache by combining the concepts of DANE and NFV (Network Function Virtualization), which we call vDAN E or vCache. The SDN controller creates vDANE instance complimentary with NFV and executes functions for selection optimal location for the initial and migrated vDANEs.…”

Section: Introductionmentioning

confidence: 99%

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Multimedia Service Management with Virtualized Cache Migration

Kalan

Sayıt

Clayman

2020

2020 23rd Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)

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The demand for playing the video with the highest quality possible leads video streaming companies to utilize network-based solutions and server assistance. As being one of the popular technology in video streaming area, HTTP adaptive video streaming systems can benefit from the emerging network technologies such as SDN and NFV. Such multimedia systems require the management of network resources efficiently to be able to provide acceptable service. In this paper, we propose a multimedia service management architecture that focuses on migration one of the most crucial components of such systems, virtualized caches. SDN controller gathers underlay network statistics and based on real-time network condition determines the optimal location for virtual cache and/or migrate it when network conditions change. We focus on hand-off affects the perceptual quality when clients migrate from one cache to another. The proposed approach was evaluated using the Mininet Emulator and its performance was given comparatively. The performance results show that the combination of SAND (Server and Network Assisted DASH) features with the advantage of the NFV-SDN technology can provide good service to its users.

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Section: Background and Related Work A Adaptive Video Streamingmentioning

confidence: 99%

Section: Background and Related Work A Adaptive Video Streamingmentioning

confidence: 99%

Section: B Utilizing Nfv and Sdn In Caching For Adaptive Video Streamentioning

confidence: 99%

Section: Deploying Vdanes In Sand Based Architecture a General mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Multimedia Service Management with Virtualized Cache Migration

Kalan

Sayıt

Clayman

2020

2020 23rd Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)

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vDANE: Using virtualization for improving video quality with Server and Network Assisted DASH

2022

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Summary Network Function Virtualization (NFV) offers flexibility in traffic engineering and network resource management, by taking advantage of Software Defined Networking (SDN). By using these network technologies, it is possible to enhance the performance of video streaming applications by placing network functions in suitable locations and rerouting flows. Our study addresses the “virtual cache placement” problem in dynamic networks, where traffic patterns and attachment points of the clients are changing rapidly. The cache placement is done by determining how many virtual caches are necessary to be able to provide acceptable service to the clients, as well as where to place those caches to meet demand. To this end, we provide a heuristic solution by taking advantage of NFV‐SDN and having the assistance of Server and Network Assisted DASH (SAND). Experimental results show that the proposed algorithms can improve the video client rebuffering by 150%–270% and also can provide an 8%–12% increase in average bitrate received by the client, compared to a number of benchmark algorithms. The obtained results indicate that the co‐operation between the client and the operator of an SDN‐enabled network, by exchanging client and network information, allows network resources to be efficiently used, and as a consequence, the Quality of Experience (QoE) on the client's side is improved.

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SDN Assisted Codec, Path and Quality Selection for HTTP Adaptive Streaming

Kalan

Sayıt

2021

IEEE Access

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Adaptive streaming over HTTP is the dominant video streaming technology for more than a decade. HTTP Adaptive Streaming (HAS) systems provide a framework which enables clients to adapt quality with respect to network fluctuations during streaming, hence to optimize the perceived quality on the client side. Recently, network assistance is integrated with HAS in order to improve underlying network conditions and to provide network-related information to the clients. The performance of HAS systems can be further enhanced if the characteristics of the streamed video are considered. In this paper, we propose a HAS system architecture where Software Defined Networking (SDN) technology is utilized for assisting clients to select the most appropriate video codec and bitrate under the constraint of current network conditions as well as routing the video packet over the appropriate paths. In the proposed architecture, layered video is used, where each additional layer improves the quality. The controller estimates the packet loss probability by taking video codec characteristics, the bitrates of the layers and network capacity into account. Based on these estimations, the controller selects the appropriate codec type and video quality for the clients and manage the network. Simulation results show that the performance of the video streaming architecture can be improved significantly when codec, quality and path selection are jointly considered, and combined with SDN flexibility and advantageous.

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Optimal Cache Placement and Migration for Improving the Performance of Virtualized SAND

Cited by 5 publications

References 10 publications

Multimedia Service Management with Virtualized Cache Migration

Multimedia Service Management with Virtualized Cache Migration

vDANE: Using virtualization for improving video quality with Server and Network Assisted DASH

SDN Assisted Codec, Path and Quality Selection for HTTP Adaptive Streaming

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