Content Caching and Distribution in Smart Grid Enabled Wireless Networks

Xueqing Huang, Nirwan Ansari

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


To facilitate wireless transmission of multimedia content to mobile users, we propose a content caching and distribution framework for smart grid enabled OFDM networks, where each popular multimedia file is coded and distributively stored in multiple energy harvesting enabled serving nodes (SNs), and the green energy distributively harvested by SNs can be shared with each other through the smart grid. The distributive caching, green energy sharing, and the on-grid energy backup have improved the reliability and performance of the wireless multimedia downloading process. To minimize the total on-grid power consumption of the whole network, while guaranteeing that each user can retrieve the whole content, the user association scheme is jointly designed with consideration of resource allocation, including subchannel assignment, power allocation, and power flow among nodes. Simulation results demonstrate that bringing content, green energy, and SN closer to the end user can notably reduce the on-grid energy consumption.

Original languageEnglish (US)
Article number7486055
Pages (from-to)513-520
Number of pages8
JournalIEEE Internet of Things Journal
Issue number2
StatePublished - Apr 2017

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Information Systems
  • Hardware and Architecture
  • Computer Science Applications
  • Computer Networks and Communications


  • Content distribution
  • distributive content cache
  • energy harvesting (EH)
  • energy sharing
  • smart grid


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