Is the Zero-Wait Policy Always Optimum for Information Freshness (Peak Age) or Throughput?

Barakat, Basel, Keates, Simeon, Wassell, Ian and Arshad, Kamran (2019) Is the Zero-Wait Policy Always Optimum for Information Freshness (Peak Age) or Throughput? IEEE Communications Letters, 23 (6). pp. 987-990. ISSN 1089-7798

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Abstract

The Zero-Wait (ZW) policy is widely held to achieve maximum information ‘freshness’, i.e., to achieve minimum Peak Age (PA) and maximum throughput, for real-time Internet-of Things applications. In this paper, it was shown through a series of experiments that the ZW policy is not necessarily the optimum policy for freshness nor throughput in all real-world scenarios. Firstly, the effect of delay on the ZW policy was shown on a LAN. Afterward, the server was located on the Internet, and it was shown that the ZW policy incurred a two-fold PA and throughput performance degradation compared with continuously sending status updates.

Item Type: Article
Subjects: Computing
Engineering
Divisions: Faculty of Technology > School of Computer Science
Depositing User: Basel Barakat
Date Deposited: 25 Nov 2021 14:39
Last Modified: 25 Nov 2021 14:39
URI: http://sure.sunderland.ac.uk/id/eprint/14173
ORCID for Basel Barakat: ORCID iD orcid.org/0000-0001-9126-7613

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