Age of information for wireless energy harvesting secondary users in cognitive radio networks

Shiyang Leng, Xiaoyong Ni, Aylin Yener

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Age of information (AoI) is recently introduced to serve as a performance metric that quantifies the freshness of information for wireless applications with time-sensitive data. This paper studies AoI of wireless energy harvesting nodes in a multiuser cognitive radio network. In the envisioned network, primary users (PUs) and secondary users (SUs) coexist in such way that SUs harvest wireless energy from active PUs and access the primary spectrum opportunistically to transmit status updates. We model the distributions of PUs and SUs by a homogeneous Poisson point process and a binomial point process, respectively. We consider a greedy policy where each SU transmits an update whenever it harvests sufficient energy. A nonlinear energy harvesting model is used for SUs. Under the greedy policy, the average AoI of the secondary network is analyzed. An upper bound and a lower bound of the average AoI are derived. Simulation results demonstrate that the bounds closely approximate the average AoI.

Original languageEnglish (US)
Title of host publicationProceedings - 2019 IEEE 16th International Conference on Mobile Ad Hoc and Smart Systems, MASS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages353-361
Number of pages9
ISBN (Electronic)9781728146010
DOIs
StatePublished - Nov 2019
Event16th IEEE International Conference on Mobile Ad Hoc and Smart Systems, MASS 2019 - Monterey, United States
Duration: Nov 4 2019Nov 7 2019

Publication series

NameProceedings - 2019 IEEE 16th International Conference on Mobile Ad Hoc and Smart Systems, MASS 2019

Conference

Conference16th IEEE International Conference on Mobile Ad Hoc and Smart Systems, MASS 2019
CountryUnited States
CityMonterey
Period11/4/1911/7/19

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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