Grant-Free Radio Access for Short-Packet Communications over 5G Networks

Azari, Amin; Popovski, Petar; Miao, Guowang; Stefanović, Čedomir

doi:10.1109/glocom.2017.8255054

Cited by 74 publications

(52 citation statements)

References 14 publications

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“…For example, an option could be to use Zadoff-Chu sequences as markers, cf. [34]. Nevertheless, the results concerning the marker lengths and/or receiver complexity, presented above, also hold qualitatively in those cases.…”

Section: Frame Synchronizationmentioning

confidence: 58%

Wireless Access in Ultra-Reliable Low-Latency Communication (URLLC)

Popovski

Stefanović

Nielsen

et al. 2019

IEEE Trans. Commun.

Self Cite

379

216

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The future connectivity landscape and, notably, the 5G wireless systems will feature Ultra-Reliable Low Latency Communication (URLLC). The coupling of high reliability and low latency requirements in URLLC use cases makes the wireless access design very challenging, in terms of both the protocol design and of the associated transmission techniques. This paper aims to provide a broad perspective on the fundamental tradeoffs in URLLC as well as the principles used in building access protocols. Two specific technologies are considered in the context of URLLC: massive MIMO and multi-connectivity, also termed interface diversity. The paper also touches upon the important question of the proper statistical methodology for designing and assessing extremely high reliability levels.

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Section: Frame Synchronizationmentioning

confidence: 58%

Wireless Access in Ultra-Reliable Low-Latency Communication (URLLC)

Popovski

Stefanović

Nielsen

et al. 2019

IEEE Trans. Commun.

Self Cite

379

216

View full text Add to dashboard Cite

show abstract

“…This technique proves to be suitable for low-latency communications in ad hoc networks. Grantfree communication schemes for short packets are a new approach that is proposed in [71], [72]. These schemes tolerate collisions by sending replica packets at the transmitter side and applying successive interference cancellation at the receiver side.…”

Section: B Mac Layer Techniquesmentioning

confidence: 99%

Low-Latency Networking: Where Latency Lurks and How to Tame It

et al. 2019

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While the current generation of mobile and fixed communication networks has been standardized for mobile broadband services, the next generation is driven by the vision of the Internet of Things and mission critical communication services requiring latency in the order of milliseconds or submilliseconds. However, these new stringent requirements have a large technical impact on the design of all layers of the communication protocol stack. The cross layer interactions are complex due to the multiple design principles and technologies that contribute to the layers' design and fundamental performance limitations. We will be able to develop low-latency networks only if we address the problem of these complex interactions from the new point of view of sub-milliseconds latency. In this article, we propose a holistic analysis and classification of the main design principles and enabling technologies that will make it possible to deploy low-latency wireless communication networks. We argue that these design principles and enabling technologies must be carefully orchestrated to meet the stringent requirements and to manage the inherent trade-offs between low latency and traditional performance metrics. We also review currently ongoing standardization activities in prominent standards associations, and discuss open problems for future research.

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“…On inter-slot SIC, Contention Resolution Diversity Slotted ALOHA is adapted to 5G in [14]. The work neglects the low latency requirements and focuses on the massive access problem.…”

Section: A Related Workmentioning

confidence: 99%

System Level Integration of Irregular Repetition Slotted ALOHA for Industrial IoT in 5G New Radio

Gürsu

Moroglu

Vilgelm

et al. 2019

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

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Automation is a key part of the new industrial revolution, that will be enabled by the deployment of thousands of sensors and actuators. The flexible deployment of these devices requires wireless connectivity which is labeled as industrial internet of things, IIoT. The sporadic activity pattern of IIoT devices naturally suggest the use of random access techniques, albeit posing new and unexplored challenges for the current wireless networks. On top of the demand for new access protocols, the latency-reliability requirements further challenge the existing random access protocols. In this work we investigate the adaptation of a well known modern random access algorithm, Irregular Repetition Slotted ALOHA (IRSA) to IIoT in 5G New Radio. The key contribution of the paper is the proposed system level protocol, Adaptive-Multichannel IRSA, that can fulfill the latency-reliability requirements. On top of this, the definition and solution of the resource allocation problem as a resource efficiency optimization guarantees that the algorithm minimizes the system resources. We show that for a set of specific requirements, AMC-IRSA can fulfill the requirements in a lot resource efficient manner. Lastly, we analyze most critical parameters to consider for integration of IRSA for 5G NR.

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Grant-Free Radio Access for Short-Packet Communications over 5G Networks

Cited by 74 publications

References 14 publications

Wireless Access in Ultra-Reliable Low-Latency Communication (URLLC)

Wireless Access in Ultra-Reliable Low-Latency Communication (URLLC)

Low-Latency Networking: Where Latency Lurks and How to Tame It

System Level Integration of Irregular Repetition Slotted ALOHA for Industrial IoT in 5G New Radio

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