Markov analysis of video transmission based on differential encoded HARQ

Vadori, Valentina; Guglielmi, Anna V.; Badia, Leonardo

doi:10.1109/wowmom.2016.7523557

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…This enhancement shows a notable improvement in throughput. In [181], [205] an unequal error protection mechanism is proposed for video transmission using SR-HARQ. Once again the frames are prioritized and the highest priority is given to I-frames as they contain the maximum information.…”

Section: E Multi-layer Harqmentioning

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: E Multi-layer Harqmentioning

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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“…Extensions of the implications found in this scenario to more general semantic communications, e.g., involving retransmissions, feedback, or the structural texture of the content such as video and multimedia [20], [31] can be further explored. Alternatively, future research could focus on developing new techniques for minimizing sensing delay and improving AoI in sensor networks, for example, by means of machine learning techniques to predict the delay terms caused by competing tasks [22], and this feature can be integrated in the scheduling algorithms to further optimize them.…”

Section: Discussionmentioning

confidence: 99%

Status Update Scheduling in Remote Sensing Under Variable Activation Delay

Badia

Munari

2023

2023 International Balkan Conference on Communications and Networking (BalkanCom)

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Sensor data exchanges in IoT applications can experience a variable delay due to changes in the communication environment and sharing of processing capabilities. This variability can impact the performance and effectiveness of the systems being controlled, and is especially reflected on age of information (AoI), a performance metric that quantifies the freshness of updates in remote sensing. In this paper, we discuss the quantitative impact of a variable activation delay on AoI. We consider an offline scheduling over a finite horizon, and we show the main role of the first and second order moments of the activation delay. Our analysis gives a quantitative boundary on when such term can be neglected and also prompts possible further investigations that can be used to mitigate the increase of AoI and improve the overall performance.

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“…The authors in [32] assessed the impact of the lost macroblocks on the reconstructed frame and the ones with the highest impact are prioritized to be retransmitted. In [33], a video flow is subdivided into independent and incrementally encoded packets and the HARQ scheme privileges the retransmission of independent packets. The maximum number of transmissions is changed based on the importance of the packet for LTE networks in [34], [35].…”

Section: B Video Transmission With Harqmentioning

confidence: 99%