Understanding Age of Information in Large-Scale Wireless Networks
نویسندگان
چکیده
The notion of age-of-information (AoI) is investigated in the context large-scale wireless networks, which transmitters need to send a sequence information packets, are generated as independent Bernoulli processes, their intended receivers over shared spectrum. Due interference, rate packet depletion at any given node entangled with both spatial configurations, determine path loss, and temporal dynamics, influence active states, other transmitters, resulting queues interact each space time entire network. To that end, variants update frequency affect not just inter-arrival but also departure process, impact such phenomena on AoI well understood. In this paper, we establish theoretical framework characterize performance aforementioned setting. Particularly, tractable expressions derived for peak average under two different transmission protocols, namely first-come-first-serve (FCFS) last-come-first-serve preemption (LCFS-PR). Additionally, our analysis accounts effects channel access controls ALOHA AoI. accuracy verified via simulations, based outcomes, find that: i) networks operating LCFS-PR able attain smaller values than FCFS, whereas gain more pronounced when infrastructure densely deployed, ii) sparsely deployed universally designed probability instrumental reducing AoI, thus calling advanced approaches, iii) rolled out, there exists non-trivial minimizes FCFS LCFS-PR.
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ژورنال
عنوان ژورنال: IEEE Transactions on Wireless Communications
سال: 2021
ISSN: ['1536-1276', '1558-2248']
DOI: https://doi.org/10.1109/twc.2020.3048008