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  • Open Access

    ARTICLE

    Content Caching Algorithms in Drone-Aided Ad Hoc Networks

    Yong Beom Park, Jian Kim, BeomKyu Suh, Ismatov Akobir, Ki-Il Kim*

    CMC-Computers, Materials & Continua, Vol.81, No.3, pp. 4727-4742, 2024, DOI:10.32604/cmc.2024.058512 - 19 December 2024

    Abstract Content delivery networks (CDNs) lead to fast content distribution through content caching at specific CDN servers near end users. However, existing CDNs based on infrastructure cannot be employed in special cases, such as military operations. Thus, a temporary CDN without an existing infrastructure is required. To achieve this goal, we introduce a new CDN for drone-aided ad hoc networks, whereby multiple drones form ad hoc networks and quickly store specific content according to new caching algorithms. Unlike the typical CDN server, the content-caching algorithm in the proposed architecture considers the limited storage capacity of the… More >

  • Open Access

    ARTICLE

    Algorithms to Calculate the Most Reliable Maximum Flow in Content Delivery Network

    Baili Zhang1, Keke Ling1,*, Pei Zhang2,3, Zhao Zhang2,3, Mingjun Zhong4

    Computer Systems Science and Engineering, Vol.41, No.2, pp. 699-715, 2022, DOI:10.32604/csse.2022.020193 - 25 October 2021

    Abstract Calculating the most reliable maximum flow (MRMF) from the edge cache node to the requesting node can provide an important reference for selecting the best edge cache node in a content delivery network (CDN). However, SDBA, as the current state-of-the-art MRMF algorithm, is too complex to meet real-time computing needs. This paper proposes a set of MRMF algorithms: NWCD (Negative Weight Community Deletion), SCPDAT (Single-Cycle Preference Deletion Approximation algorithm with Time constraint) and SCPDAP (Single-Cycle Preference Deletion Approximation algorithm with Probability constraint). NWCD draws on the “flow-shifting” algorithm of minimum cost and maximum flow, and… More >

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