Optimizing the Trade-off Between Throughput and PAoI Outage Exponents
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866929684757872640 |
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| author | Yeh, Tai-Chun Hsu, Yu-Pin |
| author_facet | Yeh, Tai-Chun Hsu, Yu-Pin |
| contents | This paper investigates the trade-off between throughput and peak age of information (PAoI) outage probability in a multi-sensor information collection system. Each sensor monitors a physical process, periodically samples its status, and transmits the updates to a central access point over a shared radio resource. The trade-off arises from the interplay between each sensor's sampling frequency and the allocation of the shared resource. To optimize this trade-off, we formulate a joint optimization problem for each sensor's sampling delay and resource allocation, aiming to minimize a weighted sum of sampling delay costs (representing a weighted sum of throughput) while satisfying PAoI outage probability exponent constraints. We derive an optimal solution and particularly propose a closed-form approximation for large-scale systems. This approximation provides an explicit expression for an approximately optimal trade-off, laying a foundation for designing resource-constrained systems in applications that demand frequent updates and also stringent statistical timeliness guarantees. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_13431 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optimizing the Trade-off Between Throughput and PAoI Outage Exponents Yeh, Tai-Chun Hsu, Yu-Pin Networking and Internet Architecture Information Theory This paper investigates the trade-off between throughput and peak age of information (PAoI) outage probability in a multi-sensor information collection system. Each sensor monitors a physical process, periodically samples its status, and transmits the updates to a central access point over a shared radio resource. The trade-off arises from the interplay between each sensor's sampling frequency and the allocation of the shared resource. To optimize this trade-off, we formulate a joint optimization problem for each sensor's sampling delay and resource allocation, aiming to minimize a weighted sum of sampling delay costs (representing a weighted sum of throughput) while satisfying PAoI outage probability exponent constraints. We derive an optimal solution and particularly propose a closed-form approximation for large-scale systems. This approximation provides an explicit expression for an approximately optimal trade-off, laying a foundation for designing resource-constrained systems in applications that demand frequent updates and also stringent statistical timeliness guarantees. |
| title | Optimizing the Trade-off Between Throughput and PAoI Outage Exponents |
| topic | Networking and Internet Architecture Information Theory |
| url | https://arxiv.org/abs/2501.13431 |