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A Probabilistic Repetition Coding-Based Access Method for Sporadic Traffic
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DOI：10.1109/TVT.2024.3392643.png)
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Abstract
En 中文
Grant-free access has been widely studied for ultra-reliable and low-latency communications in 5G networks, wherein contention-based schemes are especially suitable for sporadic traffic. In this paper, we propose a q-Consecutive Repetition Coding based Contention scheme (q-CRCC). By introducing an activation probability q for each repetition, q-CRCC effectively reduces access collisions for reliable transmissions. Furthermore, we establish an analytical reliability model of q-CRCC and jointly optimize the activation probability and the number of repetitions to improve the transmission reliability of q-CRCC. Besides, the multi-user detection technology is employed to alleviate collision failures. Finally, the accuracy of the obtained analytical reliability model and the advantages of q-CRCC are verified via extensive simulations.
Keywords:
Reliability
5G mobile communication
Multiuser detection
Encoding
Ultra reliable low latency communication
Analytical models
Probability
5G
grant-free access
repetition coding
sporadic traffic
transmission reliability
Journal
IF:
7.1
Papers:
1.8W
Citations:
6.6W