Age of Information in Multi-hop Networks with Priorities

Olga Vikhorova, Federico Chiariotti, Beatriz Soret, Giuseppe Araniti, Antonella Molinaro, Petar Popovski

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Abstrakt

Age of Information is a new metric used in real-time status update tracking applications. It measures at the destination the time elapsed since the generation of the last received packet. In this paper, we consider the co-existence of critical and noncritical status updates in a two-hop system, for which the network assigns different scheduling priorities. Specifically, the high priority is reserved to the packets that traverse the two nodes, as they experience worse latency performance. We obtain the distribution of the age and its natural upper bound termed peak age. We provide tight upper and lower bounds for priority updates and the exact expressions for the non-critical flow of packets with a general service distribution. The results give fundamental insights for the design of age-sensitive multi-hop systems.

OriginalsprogEngelsk
TitelGLOBECOM 2020 - 2020 IEEE Global Communications Conference
Antal sider6
ForlagIEEE
Publikationsdato2020
Sider1-6
Artikelnummer9348175
ISBN (Trykt)978-1-7281-8299-5
ISBN (Elektronisk)978-1-7281-8298-8
DOI
StatusUdgivet - 2020
BegivenhedGLOBECOM 2020 - 2020 IEEE Global Communications Conference - Taipei, Taiwan
Varighed: 7 dec. 202011 dec. 2020

Konference

KonferenceGLOBECOM 2020 - 2020 IEEE Global Communications Conference
LandTaiwan
ByTaipei
Periode07/12/202011/12/2020
NavnIEEE Global Communications Conference (GLOBECOM)
ISSN1930-529X

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