Abstract
The classical definition of network delay has been recently augmented by the concept of information timeliness, or Age of Information (AoI). We analyze the network delay and the AoI in a multi-hop satellite network that relays status updates from satellite 1, receiving uplink traffic from ground devices, to satellite K, using K–2 intermediate satellite nodes. The last node, K, is the closest satellite with connectivity to a ground station. The satellite formation is modeled as a queue network of M/M/1 systems connected in series. The scenario is then generalized for the case in which all satellites receive uplink traffic from ground, and work at the same time as relays of the packets from the previous nodes. The results show that the minimum average AoI is experienced at a decreasing system utilization when the number of nodes is increased. Furthermore, unloading the first nodes of the chain reduces the queueing time and therefore the average AoI. These findings provide insights for designing multihop satellite networks for latency-sensitive applications.
Original language | English |
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Title of host publication | ICC 2020 - 2020 IEEE International Conference on Communications (ICC) |
Number of pages | 6 |
Publisher | IEEE |
Publication date | 27 Jul 2020 |
Article number | 9149009 |
ISBN (Print) | 978-1-7281-5090-1 |
ISBN (Electronic) | 978-1-7281-5089-5 |
DOIs | |
Publication status | Published - 27 Jul 2020 |
Event | 2020 IEEE International Conference on Communications, ICC 2020 - Dublin, Ireland Duration: 7 Jun 2020 → 11 Jun 2020 https://icc2020.ieee-icc.org/ |
Conference
Conference | 2020 IEEE International Conference on Communications, ICC 2020 |
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Country/Territory | Ireland |
City | Dublin |
Period | 07/06/2020 → 11/06/2020 |
Internet address |
Series | I E E E International Conference on Communications |
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ISSN | 1550-3607 |