2018
DOI: 10.1109/tvt.2017.2759163
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A Preamble Collision Resolution Scheme via Tagged Preambles for Cellular IoT/M2M Communications

Abstract: Abstract-In this paper, we propose a preamble (PA) collision resolution (PACR) scheme based on multiple timing advance (TA) values captured via tagged PAs. In the proposed PACR scheme, tags are embedded in random access (RA) PAs and multiple TA values are captured for a single detected PA during a tag detection procedure. The proposed PACR scheme significantly improves RA success probability for stationary machine nodes since the nodes using collided PAs can successfully complete the corresponding RAs using ex… Show more

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Cited by 20 publications
(8 citation statements)
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“…Figure 5 depicts the relationship between the RA collision probability and the number of RA-attempting devices on a PRACH. In our simulations, the performance of the proposed RA scheme is compared with the conventional RA scheme, E_PACD scheme [ 14 ], and PACR scheme [ 15 ]. Firstly, the analytical results under the proposed RA scheme and that under the conventional scheme are both close to the simulation results, which verifies the accuracy of our analysis approach.…”
Section: Simulation Resultsmentioning
confidence: 99%
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“…Figure 5 depicts the relationship between the RA collision probability and the number of RA-attempting devices on a PRACH. In our simulations, the performance of the proposed RA scheme is compared with the conventional RA scheme, E_PACD scheme [ 14 ], and PACR scheme [ 15 ]. Firstly, the analytical results under the proposed RA scheme and that under the conventional scheme are both close to the simulation results, which verifies the accuracy of our analysis approach.…”
Section: Simulation Resultsmentioning
confidence: 99%
“…Recently, preamble collision resolution was studied under the assumption that the TA values of the IoT devices were fixed [ 15 ]. Specifically, the TA value of each device was unique and the colliding devices could be discerned by the gNB.…”
Section: Related Workmentioning
confidence: 99%
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“…Several studies mainly focus on conventional orthogonal access methods to alleviate the preamble collision and improve the capacity of access [9]- [14]. There have been some orthogonal multiple access (OMA) techniques, e.g.…”
Section: Introduction a Motivationmentioning
confidence: 99%