Age of information of multi-source systems with packet management
Date
2020
Authors
Tang, Zhifeng
Sun, Zhuo
Yang, Nan
Zhou, Xiangyun
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Abstract
In this paper, we propose a new transmission scheme in the multi-source system to improve the freshness of the received packets. In our proposed scheme, each source generates its packet through an independent and identical Bernoulli process at the beginning of each time slot, and then randomly selects one channel from multiple orthogonal frequency channels to perform repeat transmission of its packet across multiple time slots. We then analyze the average age of information (AoI) to characterize the freshness of the received packets. Specifically, we derive new closed-form expressions for the average AoI achieved by the proposed transmission scheme for three packet management policies. The simulation results corroborate our analysis and demonstrate that the proposed transmission scheme can achieve a lower average AoI than the existing scheme for the three considered packet management policies. In addition, the impact of system parameters, such as the packet generation probability, the numbers of time slots and orthogonal frequency channels, and the channel error probability, on the average AoI is examined.
Description
Keywords
Age of information, multiple access, radio resource management, scheduling
Citation
Collections
Source
2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020
Type
Conference paper
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Restricted until
2099-12-31