RACH Preamble Repetition in NB-IoT Network

Nan Jiang; Yansha Deng; Massimo  Condoluci; Weisi Guo; Arumugam Nallanathan; Mischa Dohler

doi:10.1109/LCOMM.2018.2793274

RACH Preamble Repetition in NB-IoT Network

Nan Jiang, Yansha Deng, Massimo Condoluci, Weisi Guo, Arumugam Nallanathan, Mischa Dohler

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Abstract

NarrowBand-Internet of Things (NB-IoT) is a radio access technology recently standardized by 3GPP. To provide reliable connections with extended coverage, a repetition transmission scheme is applied in both Random Access CHannel (RACH) procedure and data transmission. In this letter, we model RACH in the NB-IoT network taking into account the repeated preamble transmission and collision using stochastic geometry. We derive the exact expression of RACH success probability under time correlated interference, and validate the analysis with different repetition values via independent simulations. Numerical results have shown that the repetition scheme can efficiently improve the RACH success probability in a light traffic scenario, but only slightly improves that performance with very inefficient channel resource utilization in a heavy traffic scenario.

Original language	English
Pages (from-to)	1244-1247
Number of pages	4
Journal	IEEE COMMUNICATIONS LETTERS
Volume	22
Issue number	6
Early online date	15 Jan 2018
DOIs	https://doi.org/10.1109/LCOMM.2018.2793274
Publication status	Published - Jun 2018

Keywords

NB-IoT
stochastic geometry
RACH success probability
repetition values

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10.1109/LCOMM.2018.2793274

RACH Preamble Repetition in_JIANG_Acc5Jan2018Epub15Jan2018_GREEN AAM
©2018 IEEE.
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Cite this

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abstract = "NarrowBand-Internet of Things (NB-IoT) is a radio access technology recently standardized by 3GPP. To provide reliable connections with extended coverage, a repetition transmission scheme is applied in both Random Access CHannel (RACH) procedure and data transmission. In this letter, we model RACH in the NB-IoT network taking into account the repeated preamble transmission and collision using stochastic geometry. We derive the exact expression of RACH success probability under time correlated interference, and validate the analysis with different repetition values via independent simulations. Numerical results have shown that the repetition scheme can efficiently improve the RACH success probability in a light traffic scenario, but only slightly improves that performance with very inefficient channel resource utilization in a heavy traffic scenario.",

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AU - Deng, Yansha

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AU - Nallanathan, Arumugam

AU - Dohler, Mischa

PY - 2018/6

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N2 - NarrowBand-Internet of Things (NB-IoT) is a radio access technology recently standardized by 3GPP. To provide reliable connections with extended coverage, a repetition transmission scheme is applied in both Random Access CHannel (RACH) procedure and data transmission. In this letter, we model RACH in the NB-IoT network taking into account the repeated preamble transmission and collision using stochastic geometry. We derive the exact expression of RACH success probability under time correlated interference, and validate the analysis with different repetition values via independent simulations. Numerical results have shown that the repetition scheme can efficiently improve the RACH success probability in a light traffic scenario, but only slightly improves that performance with very inefficient channel resource utilization in a heavy traffic scenario.

AB - NarrowBand-Internet of Things (NB-IoT) is a radio access technology recently standardized by 3GPP. To provide reliable connections with extended coverage, a repetition transmission scheme is applied in both Random Access CHannel (RACH) procedure and data transmission. In this letter, we model RACH in the NB-IoT network taking into account the repeated preamble transmission and collision using stochastic geometry. We derive the exact expression of RACH success probability under time correlated interference, and validate the analysis with different repetition values via independent simulations. Numerical results have shown that the repetition scheme can efficiently improve the RACH success probability in a light traffic scenario, but only slightly improves that performance with very inefficient channel resource utilization in a heavy traffic scenario.

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RACH Preamble Repetition in NB-IoT Network

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Keywords

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