Joint Placement and Scheduling Optimization for Wireless Content Caching Networks: An I/O Latency Minimization Consideration

Yaru Fu, Quan Yu, Yue Zhang, Zheng Shi, Hong Wang, Hangguan Shan

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

Abstract

In this paper, a joint content packets placement and scheduling optimization problem is investigated to minimize the in put/output (I/O) latency of wireless content caching networks (WCCNs), taking into account the real content coding mode, namely, repetition coding, and successful retrieving criterion in practical systems. The formulated non-convex integer programming problem is optimally solved by a one-dimension search-based algorithm with feasibility checking through equivalent problem transformation. We also analyze the time complexity of the designed solution. Extensive numerical simulation results reveal that the proposed joint optimization algorithm outperforms the baseline scheme significantly in terms of I/O latency as well as outage performance.

Original languageEnglish
Title of host publication13th International Conference on Wireless Communications and Signal Processing, WCSP 2021
ISBN (Electronic)9781665407854
DOIs
Publication statusPublished - 2021
Event13th International Conference on Wireless Communications and Signal Processing, WCSP 2021 - Virtual, Online, China
Duration: 20 Oct 202122 Oct 2021

Publication series

Name13th International Conference on Wireless Communications and Signal Processing, WCSP 2021

Conference

Conference13th International Conference on Wireless Communications and Signal Processing, WCSP 2021
Country/TerritoryChina
CityVirtual, Online
Period20/10/2122/10/21

Keywords

  • Latency minimization
  • packet placement
  • repetition code
  • scheduling
  • wireless content caching

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