Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing
Mobile edge computing (MEC) is a promising solution to meet the latency requirement for delay-sensitive services in a 5G radio access network (RAN). Its key idea is to deploy computing and storage capacities at the edge of the RAN to quickly provision content and processing capacities as required by...
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doaj-484211a2f8e64f3e9943e9c5ae80d7362021-03-29T22:09:34ZengIEEEIEEE Access2169-35362019-01-0174031404410.1109/ACCESS.2018.28886028581499Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge ComputingNing Wang0Gangxiang Shen1https://orcid.org/0000-0002-7342-6980Sanjay Kumar Bose2Weidong Shao3School of Electronic and Information Engineering, Soochow University, Suzhou, ChinaSchool of Electronic and Information Engineering, Soochow University, Suzhou, ChinaDepartment of EEE, IIT Guwahati, Guwahati, IndiaSchool of Electronic and Information Engineering, Soochow University, Suzhou, ChinaMobile edge computing (MEC) is a promising solution to meet the latency requirement for delay-sensitive services in a 5G radio access network (RAN). Its key idea is to deploy computing and storage capacities at the edge of the RAN to quickly provision content and processing capacities as required by the users. Efficient content caching and delivery are key issues to ensure the success of this technique. This paper proposes a zone-based cooperative content caching and delivery scheme for a RAN supporting MEC (MEC-RAN), where the RAN is modelled as a zone and is further sub-divided into multiple sub-zones. Content items are cooperatively cached and delivered among multiple sub-zones. The caching problem is formulated as a mixed integer linear programming model. We also develop a heuristic cooperative content caching strategy to decide the content items to be cached in each MEC server. This novel strategy divides the storage space in each MEC server into two parts. The first part caches locally popular contents and the second part is used to cooperatively cache zone-wide popular items. We study the proposed scheme both through simulations and implementation on a testbed that consists of a subnetwork on our campus and commercial cloud service from Ali-Cloud. Both of these show that the proposed zone-based scheme performs better than other typical caching strategies in terms of average content delivery latency and balanced loading of the MEC servers.https://ieeexplore.ieee.org/document/8581499/Content delivery networkmobile edge computingoptimal caching strategyzone-based cooperative content caching |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ning Wang Gangxiang Shen Sanjay Kumar Bose Weidong Shao |
spellingShingle |
Ning Wang Gangxiang Shen Sanjay Kumar Bose Weidong Shao Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing IEEE Access Content delivery network mobile edge computing optimal caching strategy zone-based cooperative content caching |
author_facet |
Ning Wang Gangxiang Shen Sanjay Kumar Bose Weidong Shao |
author_sort |
Ning Wang |
title |
Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing |
title_short |
Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing |
title_full |
Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing |
title_fullStr |
Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing |
title_full_unstemmed |
Zone-Based Cooperative Content Caching and Delivery for Radio Access Network With Mobile Edge Computing |
title_sort |
zone-based cooperative content caching and delivery for radio access network with mobile edge computing |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2019-01-01 |
description |
Mobile edge computing (MEC) is a promising solution to meet the latency requirement for delay-sensitive services in a 5G radio access network (RAN). Its key idea is to deploy computing and storage capacities at the edge of the RAN to quickly provision content and processing capacities as required by the users. Efficient content caching and delivery are key issues to ensure the success of this technique. This paper proposes a zone-based cooperative content caching and delivery scheme for a RAN supporting MEC (MEC-RAN), where the RAN is modelled as a zone and is further sub-divided into multiple sub-zones. Content items are cooperatively cached and delivered among multiple sub-zones. The caching problem is formulated as a mixed integer linear programming model. We also develop a heuristic cooperative content caching strategy to decide the content items to be cached in each MEC server. This novel strategy divides the storage space in each MEC server into two parts. The first part caches locally popular contents and the second part is used to cooperatively cache zone-wide popular items. We study the proposed scheme both through simulations and implementation on a testbed that consists of a subnetwork on our campus and commercial cloud service from Ali-Cloud. Both of these show that the proposed zone-based scheme performs better than other typical caching strategies in terms of average content delivery latency and balanced loading of the MEC servers. |
topic |
Content delivery network mobile edge computing optimal caching strategy zone-based cooperative content caching |
url |
https://ieeexplore.ieee.org/document/8581499/ |
work_keys_str_mv |
AT ningwang zonebasedcooperativecontentcachinganddeliveryforradioaccessnetworkwithmobileedgecomputing AT gangxiangshen zonebasedcooperativecontentcachinganddeliveryforradioaccessnetworkwithmobileedgecomputing AT sanjaykumarbose zonebasedcooperativecontentcachinganddeliveryforradioaccessnetworkwithmobileedgecomputing AT weidongshao zonebasedcooperativecontentcachinganddeliveryforradioaccessnetworkwithmobileedgecomputing |
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