Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication
<p dir="ltr">To support multimedia applications, Mobile Edge Computing (MEC) servers offer storage and computing capacities to handle videos close to end-users. However, the high load in peak hours consumes the limited available bandwidth of existing cellular and backhaul links leadi...
محفوظ في:
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| مؤلفون آخرون: | , , , |
| منشور في: |
2020
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| _version_ | 1864513559060283392 |
|---|---|
| author | Emna Baccour (16896366) |
| author2 | Aiman Erbad (14150589) Amr Mohamed (3508121) Mohsen Guizani (12580291) Mounir Hamdi (14150652) |
| author2_role | author author author author |
| author_facet | Emna Baccour (16896366) Aiman Erbad (14150589) Amr Mohamed (3508121) Mohsen Guizani (12580291) Mounir Hamdi (14150652) |
| author_role | author |
| dc.creator.none.fl_str_mv | Emna Baccour (16896366) Aiman Erbad (14150589) Amr Mohamed (3508121) Mohsen Guizani (12580291) Mounir Hamdi (14150652) |
| dc.date.none.fl_str_mv | 2020-12-15T00:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.jnca.2020.102801 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Collaborative_hierarchical_caching_and_transcoding_in_edge_network_with_CE-D2D_communication/24225673 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Communications engineering Information and computing sciences Distributed computing and systems software MEC D2D VoD Hierarchical caching Collaborative offloading Adaptive bitrate Incentive VCG mechanism |
| dc.title.none.fl_str_mv | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">To support multimedia applications, Mobile Edge Computing (MEC) servers offer storage and computing capacities to handle videos close to end-users. However, the high load in peak hours consumes the limited available bandwidth of existing cellular and backhaul links leading to low network performance. Hence, an elastic system model is required to maintain the high Quality of Experience (QoE) as the resource demands increase. Caching popular videos at mobile devices is considered a promising technique for content delivery. Yet, mobile users offer small capacities that are not adequate for large-sized video sharing. In this paper, we extend the collaborative caching and processing framework in edge networks (Collaborative Edge - CE) to include the users' mobile video sharing (Device-to-Device - D2D). We propose a caching strategy to cache only the chunks of videos to be watched and instead of offloading one video content by one edge node, helpers (MEC servers and users) will collaborate to store and share different chunks to optimize the storage/transmission resources usage. To only cache popular contents, we designed a D2D-aware proactive chunks caching on users’ devices based on our chunks popularity model. Next, we formulate this CE-D2D collaborative problem as a linear program. Due to the NP-hardness of the problem, we introduce a sub-optimal relaxation and an online heuristic using the proactive caching and presenting a near optimal data offloading and a profitable payment determination, with polynomial time complexity. The simulation results show that our policies and heuristics outperform other edge caching approaches by more than 10% in terms of hit ratio, average delay, and cost.</p><h2>Other Information</h2><p dir="ltr">Published in: Journal of Network and Computer Applications<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.jnca.2020.102801" target="_blank">https://dx.doi.org/10.1016/j.jnca.2020.102801</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_e7b064bfb19cab09399c60aa52e38cea |
| identifier_str_mv | 10.1016/j.jnca.2020.102801 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/24225673 |
| publishDate | 2020 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communicationEmna Baccour (16896366)Aiman Erbad (14150589)Amr Mohamed (3508121)Mohsen Guizani (12580291)Mounir Hamdi (14150652)EngineeringCommunications engineeringInformation and computing sciencesDistributed computing and systems softwareMECD2DVoDHierarchical cachingCollaborative offloadingAdaptive bitrateIncentive VCG mechanism<p dir="ltr">To support multimedia applications, Mobile Edge Computing (MEC) servers offer storage and computing capacities to handle videos close to end-users. However, the high load in peak hours consumes the limited available bandwidth of existing cellular and backhaul links leading to low network performance. Hence, an elastic system model is required to maintain the high Quality of Experience (QoE) as the resource demands increase. Caching popular videos at mobile devices is considered a promising technique for content delivery. Yet, mobile users offer small capacities that are not adequate for large-sized video sharing. In this paper, we extend the collaborative caching and processing framework in edge networks (Collaborative Edge - CE) to include the users' mobile video sharing (Device-to-Device - D2D). We propose a caching strategy to cache only the chunks of videos to be watched and instead of offloading one video content by one edge node, helpers (MEC servers and users) will collaborate to store and share different chunks to optimize the storage/transmission resources usage. To only cache popular contents, we designed a D2D-aware proactive chunks caching on users’ devices based on our chunks popularity model. Next, we formulate this CE-D2D collaborative problem as a linear program. Due to the NP-hardness of the problem, we introduce a sub-optimal relaxation and an online heuristic using the proactive caching and presenting a near optimal data offloading and a profitable payment determination, with polynomial time complexity. The simulation results show that our policies and heuristics outperform other edge caching approaches by more than 10% in terms of hit ratio, average delay, and cost.</p><h2>Other Information</h2><p dir="ltr">Published in: Journal of Network and Computer Applications<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.jnca.2020.102801" target="_blank">https://dx.doi.org/10.1016/j.jnca.2020.102801</a></p>2020-12-15T00:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.jnca.2020.102801https://figshare.com/articles/journal_contribution/Collaborative_hierarchical_caching_and_transcoding_in_edge_network_with_CE-D2D_communication/24225673CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/242256732020-12-15T00:00:00Z |
| spellingShingle | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication Emna Baccour (16896366) Engineering Communications engineering Information and computing sciences Distributed computing and systems software MEC D2D VoD Hierarchical caching Collaborative offloading Adaptive bitrate Incentive VCG mechanism |
| status_str | publishedVersion |
| title | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| title_full | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| title_fullStr | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| title_full_unstemmed | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| title_short | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| title_sort | Collaborative hierarchical caching and transcoding in edge network with CE-D2D communication |
| topic | Engineering Communications engineering Information and computing sciences Distributed computing and systems software MEC D2D VoD Hierarchical caching Collaborative offloading Adaptive bitrate Incentive VCG mechanism |