A Study on Multi-Preamble Based Random Access for 5G URLLC: Cross-Layer Approach 


Vol. 46,  No. 2, pp. 238-245, Feb.  2021
10.7840/kics.2021.46.2.238


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  Abstract

In this paper, we investigate multi-preamble based random access (RA) technique for the 5th generation (5G) ultra-reliable and low-latency (URLLC) scenario. A key feature of the multi-preamble based RA technique is to enable each of terminals to simultaneously transmit a number of preambles at a given RA opportunity, which is effective to improve the survivability of each of preambles. In this case, the RA procedure can be succeed when at least an RA preamble among multiple RA preambles exists which does not experience any preamble collision. However, due to the transmit power budget, the preamble detection performance may be degraded, and, thus, we have to thoroughly analyze and evaluate the performance of the multi-preamble based RA technique from the perspective of cross-layer. We analyze our proposed technique in terms of the RA success probability and perform extensive simulations to verify the superiority of our proposed technique. We verify that our proposed technique is effective to improve the RA success probability while improving the latency performance.

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  Cite this article

[IEEE Style]

T. Kim and I. Bang, "A Study on Multi-Preamble Based Random Access for 5G URLLC: Cross-Layer Approach," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 2, pp. 238-245, 2021. DOI: 10.7840/kics.2021.46.2.238.

[ACM Style]

Taehoon Kim and Inkyu Bang. 2021. A Study on Multi-Preamble Based Random Access for 5G URLLC: Cross-Layer Approach. The Journal of Korean Institute of Communications and Information Sciences, 46, 2, (2021), 238-245. DOI: 10.7840/kics.2021.46.2.238.

[KICS Style]

Taehoon Kim and Inkyu Bang, "A Study on Multi-Preamble Based Random Access for 5G URLLC: Cross-Layer Approach," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 2, pp. 238-245, 2. 2021. (https://doi.org/10.7840/kics.2021.46.2.238)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880