Efficient Algorithms for Cache-Throughput Analysis in Cellular-D2D 5G Networks

Anjum, Nasreen ORCID: 0000-0002-7126-2177, Yang, Zhahoui, Imran, Khan, Kiran, Mahreen, Wu, Falin, Rabie, Khaled and Bahaei, Shikh Muhammad (2021) Efficient Algorithms for Cache-Throughput Analysis in Cellular-D2D 5G Networks. Computers, Materials and Continua, 67 (2). pp. 1759-1780. doi:10.32604/cmc.2021.014635

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11467 Anjum, Yang, Jhan, Kiran, Wu, Rabie and Bahaei (2020) Efficient_Algorithms_for_Cacheh_Throughput_Analysis_in_Cellular_D2D5G_Networks.pdf - Published Version
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In this paper, we propose a two-tiered segment-based Device-to-Device (S-D2D) caching approach to decrease the start up and playback delay experienced by Video-on-Demand (VoD) users in a cellular network. In the S-D2D caching approach cache space of each mobile device is divided into two cache-blocks. The first cache-block reserve for caching and delivering the beginning portion of the most popular video les and the second cache-block caches the latter portion of the requested video les ‘fully or partially’ depending on the users’ video watching behaviour and popularity of videos. In this approach before caching, video is divided and grouped in a sequence of fixed-sized fragments called segments. To control the admission to both cache-blocks and improve the system throughput, we further propose and evaluate three cache admission control algorithms. We also propose a video segment access protocol to elaborate on how to cache and share the video segments in a segmentation based D2D caching architecture. We formulate an optimisation problem and the optimal cache probability and beginning-segment size that maximise the cache-throughput probability of beginning-segments. To solve the non-convex cache-throughout maximisation problem, we derive an iterative algorithm, where the optimal solution is derived in each step. We used extensive simulations to evaluate the performance of our proposed S-D2D caching system.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: Device-to-Device (D2D); Startup-Delay; Playback-Delay; Caching
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Schools and Research Institutes > School of Business, Computing and Social Sciences
Research Priority Areas: Applied Business & Technology
Depositing User: Nasreen Anjum
Date Deposited: 15 Sep 2022 15:09
Last Modified: 03 Nov 2023 14:11
URI: https://eprints.glos.ac.uk/id/eprint/11467

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