Abstract
In this work the impact of age of information (AoI) is studied from the perspective of networked control systems (NCS), i.e., control loops that are closed over networks. We formulate the estimation problem of a linear time invariant (LTI) system and show that related performance metrics can be optimized by minimizing age-penalty functions. From the variety of possible penalties that make sense from an NCS point of view, we derive a general age-penalty minimization problem. We characterize properties of penalty functions that are trivial or non-trivial to solve and show that for non-trivial age-penalties, the optimal transmission policy over a single link with packet loss is AoI-threshold based. Then, we propose an algorithm to find the optimal threshold. Simulation results verify that threshold policies with optimal threshold can serve to optimally solve a variety of NCS related estimation problems.
Original language | English |
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Title of host publication | IEEE INFOCOM 2019 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) |
Publisher | IEEE |
Pages | 189-196 |
Number of pages | 8 |
ISBN (Electronic) | 9781728118789 |
ISBN (Print) | 9781728118796 (PoD) |
DOIs | |
Publication status | Published - 23 Sept 2019 |
Event | IEEE INFOCOM 2019 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) - Paris, France Duration: 29 Apr 2019 → 2 May 2019 |
Conference
Conference | IEEE INFOCOM 2019 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) |
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Country/Territory | France |
City | Paris |
Period | 29/04/19 → 2/05/19 |
Keywords
- Information age
- Delays
- Estimation error
- Minimization
- Packet loss