Age-Optimal Multi-Slot Pilot Allocation Random Access Protocol for S-IoT

Yang, Tao; Jiao, Jian; Xu, Liang; Wu, Shaohua; Zhang, Qinyu

doi:10.1109/wcnc49053.2021.9417428

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…Another work of Li et al 30 also focused on the improvement of the traditional HARQ and proposed a fast incremental redundant HARQ protocol for space‐air‐ground integrated network, where the successive decoding and feedback are omitted based on the channel estimation. Yang et al 31 considered the massive machine‐type communication for S‐IoT in terms of AoI. A multislot allocation random access protocol was proposed.…”

Section: Introductionmentioning

confidence: 99%

Age of error information and throughput for truncated and layer‐coded HARQ‐based satellite‐IoT systems

Zhao,

Jia,

Xie

et al. 2023

Int J Communication

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SummaryThe work focuses on the simultaneous improvement on the throughput and information freshness of the promising satellite‐based Internet of Things (S‐IoT). To this end, we first propose a method based on the adaptive modulation coding (AMC) and truncated layer‐coded hybrid automatic repeat request (L‐HARQ) strategies by especially considering the difference in the channel state information (CSI) between the transmitter and receiver. On account of the large signal delay of the S‐IoT systems, this paper establishes the channel model based on the correlation of the signal‐to‐noise ratio (SNR) under the outdated channel and the ideal channel. Secondly, considering the fact that the improved backtrack decoding is used in the L‐HARQ, the classical definition of age of information (AoI) is insufficient to quantify the status update freshness, we propose the age of error information (AoEI), which is defined as the elapsed time since the generation of the lastly successfully backtrack‐decoded status update. Thirdly, we characterize the statistical descriptions of the maximum wait time of the successfully recovered status updates and the interdeparture time between the two consecutive status update packets that are lastly successfully received. Then, the closed‐form expression of average AoEI is derived under the assumption of independent and identically distributed fading channels. Finally, the Markov decision process (MDP) framework is used to optimize the packet parameters in each round of L‐HARQ process under the general fading scenario. Thereby, the optimized transmission scheme that minimizes AoI with throughput constraint is solved. The simulations investigate the effect of system parameters on the average AoEI.

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Section: Introductionmentioning

confidence: 99%

Age of error information and throughput for truncated and layer‐coded HARQ‐based satellite‐IoT systems

Zhao,

Jia,

Xie

et al. 2023

Int J Communication

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“…Age aware protocols have been introduced in the literature. Freshness aware Medium Access Control (MAC) protocols were introduced in [18,24], while IoT latency/age aware protocols were introduced in [7,10,11,26,29,36,39,41]. Additionally, in [3], a complete real life implementation of an IoT network was carried out and AoI measurements taken.…”

Section: Introductionmentioning

confidence: 99%

Statistical guarantee of timeliness in networks of IoT devices

et al. 2022

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The Internet of Things (IoT) paradigm, has opened up the possibility of using the ubiquity of small devices to route information without the necessity of being connected to a Wide Area Network (WAN). Use cases of IoT devices sending updates that are routed and delivered by other IoT devices have been proposed in the literature. In this paper we focus on receivers only interested in the freshest updates from the sending device. In particular, the dynamic network created by routing/gossiping through small devices creates the possibility of delivering updates out of order. Thus, the entire process can be studied well through a queueing system with infinitely many servers, all serving updates with a random service time. Age of Information (AoI) was proposed as the main metric to measure information freshness. We study the amount of time that the AoI is over a certain threshold at the receiver end as a Quality of Service (QoS) measure, called update outage probability. Particularly, given the recent interest in the literature for time domain analysis of the AoI, we obtain the exact expressions for the AoI, peak AoI (pAoI), effective service time and effective departure time distributions for an M/M/$$\infty $$ ∞ queuing system from a time domain perspective, and study the interdependence between the various parameters involved in order to satisfy a given statistical constraint on timeliness.

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Age-Critical Pilot Allocation Random Access Protocol for Space-Air-Ground Integrated Networks

Yang

Jiao

et al. 2021

2021 IEEE Global Communications Conference (GLOBECOM)

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Age-Optimal Multi-Slot Pilot Allocation Random Access Protocol for S-IoT

Cited by 8 publications

References 14 publications

Age of error information and throughput for truncated and layer‐coded HARQ‐based satellite‐IoT systems

Age of error information and throughput for truncated and layer‐coded HARQ‐based satellite‐IoT systems

Statistical guarantee of timeliness in networks of IoT devices

Age-Critical Pilot Allocation Random Access Protocol for Space-Air-Ground Integrated Networks

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