Browsing by Author "Sato, Takuro"

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  • A Cross-layer Green Information-Centric Networking Design toward the Energy Internet
    (2022) Nguyen, Quang Ngoc; Ullah, Rehmat; Kim, Byung Seo; Hassan, Rosilah; Sato, Takuro; Taleb, Tarik
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    To address the energy-efficiency issue in Information-Centric Networking (ICN), this article proposes a novel Green ICN design, which adapts the power consumption of network nodes to the optimized utilization level proportionally. By learning over the consumers' interactive data traffic pattern/behavior, we introduce a new concept of cross-layer power adaption conducted through dynamically adjusting link rate corresponding to content popularity to reduce the wasteful power consumption of Content Routers (CRs). We also develop a controlling policy for each content provider to map its status to the most suitable operating mode to diminish power consumption. Moreover, we propose a smart Selective Caching Scheme (SCS) so that the caching portion in a CR's cache memory is adjusted according to content popularity and available spaces of two customized content cache spaces, namely hot and cold caching queues, for storing popular and unpopular content objects. This scheme can further decrease the power from caching since it is diminished when the traffic load is reduced via the proposed CRs' adaptive mechanism. The evaluation results with practical insights in several distinct scenarios show that the proposal can provide considerably higher energy efficiency and network performance at the same time, typically achieving at least 20% power-saving with a higher hop reduction ratio, compared to existing Internet designs with relevant state-of-the-art caching strategies.
  • Design and implementation of integrated ICN and CDN as a video streaming service
    (2019-01-01) Yan, Chengkai; Nguyen, Quang Ngoc; Benkacem, Ilias; Okabe, Daisuke; Nakao, Akihiro; Tsuda, Toshitaka; Safitri, Cutifa; Taleb, Tarik; Sato, Takuro
     A4 Artikkeli konferenssijulkaisussa
    In this research, we leverage the emerging concept of network slicing to enable the end-to-end integrated Information-Centric Networking (ICN) and Content Delivery Network (CDN) for 5G networking infrastructure. While CDN is deployed to cache content at the optimal server corresponding to the content and geographical location, this paper focuses on verifying the efficiency of ICN slice for regional content distribution. Specifically, the ICN slice can be established by the regional Orchestrator by following the current NFV/SDN standard. Then, the slice stitching process will be performed to interconnect two slices after their establishments via the Orchestrator. We also implement an OpenStack-based virtual node which supports both IP and ICN protocols and acts as the ICN-Gateway. The joint-testbed evaluations conducted between Japan side (ICN slice) and Europe side (CDN slice) show that the deployment of ICN Gateway and the proposed Node ID-based ICN naming structure can improve network performance and avoid network congestion.
  • Integrated ICN and CDN Slice as a Service
    (2018) Benkacem, Ilias; Bagaa, Miloud; Taleb, Tarik; Ngoc Nguyen, Quang; Toshitaka, Tsuda; Sato, Takuro
     A4 Artikkeli konferenssijulkaisussa
    In this article, we leverage Network Function Virtualization(NFV) and Multi-Access Edge Computing (MEC) technologies, proposing a system which integrates ICN (Information-Centric Network) with CDN (Content Delivery Network) to provide an efficient content delivery service. The proposed system combines the dynamic CDN slicing concept with the NDN(Named Data Network) based ICN slicing concept to avoid core network congestion. A dynamic CDN slice is deployed to cache content at optimal locations depending on the nature of the content and the geographical distributions of potential viewers. Virtual cache servers, along with supporting virtual transcoders,are placed across a cloud belonging to multiple-administrativedomains, forming a CDN slice. The ICN slice is, in turn, usedfor the regional distribution of content, leveraging the amebased access and the autonomic in-network content caching.This enables the delivery of content from nearby network nodes,avoiding the duplicate transfer of content and also ensuringshorter response times. Our experiments demonstrate that integratedICN/CDN is better than traditional CDN in almost allaspects, including service scalability, reliability, and quality ofservice.
  • PPCS: A Progressive Popularity-Aware Caching Scheme for Edge-Based Cache Redundancy Avoidance in Information-Centric Networks
    (2019-02-01) Nguyen, Quang Ngoc; Liu, Jiang; Pan, Zhenni; Benkacem, Ilias; Tsuda, Toshitaka; Taleb, Tarik; Shimamoto, Shigeru; Sato, Takuro
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    This article proposes a novel chunk-based caching scheme known as the Progressive Popularity-Aware Caching Scheme (PPCS) to improve content availability and eliminate the cache redundancy issue of Information-Centric Networking (ICN). Particularly, the proposal considers both entire-object caching and partial-progressive caching for popular and non-popular content objects, respectively. In the case that the content is not popular enough, PPCS first caches initial chunks of the content at the edge node and then progressively continues caching subsequent chunks at upstream Content Nodes (CNs) along the delivery path over time, according to the content popularity and each CN position. Therefore, PPCS efficiently avoids wasting cache space for storing on-path content duplicates and improves cache diversity by allowing no more than one replica of a specified content to be cached. To enable a complete ICN caching solution for communication networks, we also propose an autonomous replacement policy to optimize the cache utilization by maximizing the utility of each CN from caching content items. By simulation, we show that PPCS, utilizing edge-computing for the joint optimization of caching decision and replacement policies, considerably outperforms relevant existing ICN caching strategies in terms of latency (number of hops), cache redundancy, and content availability (hit rate), especially when the CN's cache size is small.