Average Age of Information in Short Packet Based Machine Type Communication

Yu, Baoquan; Cai, Yueming; Wu, Dan; Xiang, Zhongwu

doi:10.1109/tvt.2020.3004828

Cited by 79 publications

(9 citation statements)

References 41 publications

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“…To address the latency due to this signaling overhead among the machines, a detection-based ARQ protocol is proposed in [235] where each machine monitors the resource blocks during the transmission, and a retransmission is performed soon after the detection of a collision, without waiting for any kind of acknowledgment. The performance of HARQ in mMTC applications is mathematically modeled in [236], [237]. Moreover, in [238] the performance of HARQ in mMTC is numerically evaluated when joint network and fountain coding is used.…”

Section: B Massive Machine Type Communication (Mmtc)mentioning

confidence: 99%

Hybrid Automatic Repeat Request (HARQ) in Wireless Communications Systems and Standards: A Contemporary Survey

Ahmed

Al-Dweik

Iraqi

et al. 2021

IEEE Commun. Surv. Tutorials

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Automatic repeat request (ARQ) schemes, and in particular hybrid-ARQ (HARQ) schemes, which jointly adopt forward error correction (FEC) and ARQ, are essential to provide reliable data transmission in wireless communications systems. However, the feedback from the receiver to the transmitter and the retransmission process used in ARQ incurs significant cost in terms of power efficiency, throughput, computational power and delay. Unfortunately, such drawbacks can limit their applications to several current and emerging technologies. More specifically, the increasing number of wireless users has create spectrum scarcity, relying on small-size batteries create power constraints, deployment of real-time applications boost the demand for ultralow delay networks, and the ultra-small low-cost internet of things (IoT) devices has limited signal processing and computation capabilities. Consequently, extensive research efforts have been dedicated to overcome the limitations inherent in HARQ. This survey paper provides an extensive literature review of the stateof-the-art HARQ techniques and discusses their integration in various wireless technologies. Moreover, it provides insights on advantages and disadvantages of particular ARQ types and discusses open problems and future directions.

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Section: B Massive Machine Type Communication (Mmtc)mentioning

confidence: 99%

Hybrid Automatic Repeat Request (HARQ) in Wireless Communications Systems and Standards: A Contemporary Survey

Ahmed

Al-Dweik

Iraqi

et al. 2021

IEEE Commun. Surv. Tutorials

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“…In [30], the average AoI of machine-type communications with short packets was developed and optimised, where the packet error probabilities were compared for the strategies of discarding and retransmitting the packets decoded unsuccessfully. Furthermore, network densification is an influential approach to address the challenges of exponentially increasing data services and massive connectivity in the IoT [31].…”

Section: Relay Networkmentioning

confidence: 99%

“…Before stepping further into the optimisation of the first item in (24) subject to 1 , we present an approximation of the relay's average packet error probability, which has been validated in [30]. Based on (12), we havē…”

Section: B Average Aoi Minimisationmentioning

confidence: 99%

Decode-and-Forward Short-Packet Relaying in the Internet of Things: Timely Status Updates

Zheng

Yang

Wei

et al. 2021

IEEE Trans. Wireless Commun.

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In this paper, a decode-and-forward (DF) shortpacket relaying model is developed to achieve timely status updates for intelligent monitoring within the Internet of Things (IoT), where the status updates generated at an IoT device are delivered to a remote server with the aid of a relay in both halfduplex (HD) and full-duplex (FD) modes. To characterise the data freshness of status updates, we exploit the age of information (AoI) as a metric, which is defined as the time elapsed since the generation of the latest successfully decoded status update. The average AoI is formulated and minimised for both HD-DF and FD-DF relaying IoT networks in finite blocklength regime. For the HD-DF relaying, we introduce a perfect approximation of the average AoI to solve the problem of average AoI minimisation with the optimal blocklengths in two phases. For the FD-DF relaying, we propose an iterative algorithm to solve the problem of average AoI minimisation by optimising the relay's transmit power and the blocklength. Illustrative numerical results not only substantiate the validity of our proposed algorithms, but also provide useful references for the IoT monitoring network design, specifically for the transmit power thresholds at the IoT device and the relay.Index Terms-Age of information (AoI), decode-and-forward (DF), finite blocklength regime, full duplex (FD), half duplex (HD), short-packet relaying, status updates.

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“…By substituting (19), ( 20) and ( 22) into (17), and ( 19) and ( 21) into ( 18), E [Q k ] and E [U k ] are presented, respectively, as…”

Section: A Average Aoimentioning

confidence: 99%

“…The average AoI is minimized by optimizing the redundancy allocation in the hybrid automatic repeat request (HARQ) scheme in [16]. In [17], the effect of the retransmission on AoI reduction is analyzed in the short packet-based machine type communications. In [18], the transmission power and the maximum allowable retransmission times are optimized to minimize the average AoI.…”

Section: Introductionmentioning

confidence: 99%

Securing Fresh Data in Wireless Monitoring Networks: Age-of-Information Sensitive Coverage Perspective

Kim,

Lee

2021

Preprint

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With the development of IoT, the sensor usage has been elevated to a new level, and it becomes more crucial to maintain reliable sensor networks. In this paper, we provide how to efficiently and reliably manage the sensor monitoring system for securing fresh data at the data center (DC). A sensor transmits its sensing information regularly to the DC, and the freshness of the information at the DC is characterized by the age of information (AoI) that quantifies the timeliness of information. By considering the effect of the AoI and the spatial distance from the sensor on the information error at the DC, we newly define an error-tolerable sensing (ETS) coverage as the area that the estimated information is with smaller error than the target value. We then derive the average AoI and the AoI violation probability of the sensor monitoring system, and finally present the η-coverage probability, which is the probability that the ETS coverage is greater than η ratio of the maximum sensor coverage. We also provide the optimal transmission power of the sensor, which minimizes the average energy consumption while guaranteeing certain level of the η-coverage probability. Numerical results validate the theoretical analysis and show the tendency of the optimal transmission power according to the maximum number of retransmissions. This paper can pave the way to efficient design of the AoI-sensitive sensor networks for IoT.

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Average Age of Information in Short Packet Based Machine Type Communication

Cited by 79 publications

References 41 publications

Hybrid Automatic Repeat Request (HARQ) in Wireless Communications Systems and Standards: A Contemporary Survey

Hybrid Automatic Repeat Request (HARQ) in Wireless Communications Systems and Standards: A Contemporary Survey

Decode-and-Forward Short-Packet Relaying in the Internet of Things: Timely Status Updates

Securing Fresh Data in Wireless Monitoring Networks: Age-of-Information Sensitive Coverage Perspective

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