Probabilistic Caching and Dynamic Delivery Policies for Categorized Contents and Consecutive User Demands
- Authors
- Choi, M.; Molisch, A.F.; Han, D.; Kim, D.; Kim, J.; Moon, J.
- Issue Date
- 4월-2021
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- and user preference; consecutive user demands; content delivery; delay-sensitive communications; Wireless caching
- Citation
- IEEE Transactions on Wireless Communications, v.20, no.4, pp.2685 - 2699
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Transactions on Wireless Communications
- Volume
- 20
- Number
- 4
- Start Page
- 2685
- End Page
- 2699
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/128981
- DOI
- 10.1109/TWC.2020.3044076
- ISSN
- 1536-1276
- Abstract
- Wireless caching networks have been extensively researched as a promising technique for supporting the massive data traffic of multimedia services. Many of the existing studies on real-data traffic have shown that users of a multimedia service consecutively request multiple contents and this sequence is strongly dependent on the related list of the first content and/or the top referrer in the category. This paper thus introduces the notion of 'temporary preference', characterizing the behavior of users who are highly likely to request the next content from a certain target category (i.e., related content list). Based on this observation, this paper proposes both probabilistic caching and dynamic delivery policies for categorized contents and consecutive user demands. The proposed caching scheme maximizes the minimum of the cache hit rates for all users. In the delivery phase, a dynamic helper association policy for receiving multiple contents in a row is designed to reduce the delivery latency. By comparing with the content placement optimized for one-shot requests, numerical results verify the effects of categorized contents and consecutive user demands on the proposed caching and delivery policies. © 2002-2012 IEEE.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.