Content Delivery for Base Station Cooperative Caching in Cellular Networks

Li Li, Shuocheng Guo, Tiankui Zhang, Yapeng Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In a cache-enabled cellular network, a large number of repeated requests by users for hotspot contents in the network will increase the traffic load and the content delivery delay. Therefore, edge caching technology is introduced to cache highly popular content files in advance in cache devices closer to users to reduce the content delivery delay. However, the improvement of system performance by mobile edge caching technology will be limited by the storage capacity of the base station (BS). This paper studied the content delivery algorithm in cellular networks with BS cooperative caching capability which takes minimizing the system cost as the optimization goal. The content delivery strategy of the accessing BS and the content delivery strategy of the cooperative BS are constructed as two 0-1 matrix variables, which are used to indicate what contents the BSs deliver to the users at a certain moment. the coupling variables are solved by Lagrangian relaxation and primitive dual problem decomposition method respectively. According to the simulation results, the proposed content delivery algorithm can reduce the system transmission cost and improve the local cache hit rate efficiently.

Original languageEnglish
Title of host publication2023 4th Information Communication Technologies Conference, ICTC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages258-264
Number of pages7
ISBN (Electronic)9781665462587
DOIs
Publication statusPublished - 2023
Event4th Information Communication Technologies Conference, ICTC 2023 - Nanjing, China
Duration: 17 May 202319 May 2023

Publication series

Name2023 4th Information Communication Technologies Conference, ICTC 2023

Conference

Conference4th Information Communication Technologies Conference, ICTC 2023
Country/TerritoryChina
CityNanjing
Period17/05/2319/05/23

Keywords

  • base station cooperative caching
  • content delivery
  • edge caching

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