Random Access Parallelization Based on Preamble Diversity for Cellular IoT Networks

Kim, Taehoon; Bang, Inkyu

doi:10.1109/lcomm.2019.2953458

Cited by 5 publications

(16 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this section, we evaluate the performance of our proposed technique in terms of RA failure probability. We perform extensive computer simulations with MATLAB, where specific simulation parameters are listed in Table1 [19]. Considering two types of access priorities, we categorize the entire IoT devices into two groups with different access priorities: high and low priorities.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…In the current systems, each IoT device triggers the RA procedure by transmitting only a single preamble, which does not embed any functionality to indicate its access priority. In our proposed technique, this constraint on the number of simultaneously transmitted preambles is relaxed, and thus, each IoT device will be allowed to simultaneously transmit multiple preambles [19]. Furthermore, we differentiate the number of simultaneously transmitted preambles according to the access priority, which will be further explained in the next section.…”

Section: System Modelmentioning

confidence: 99%

“…Furthermore, we differentiate the number of simultaneously transmitted preambles according to the access priority, which will be further explained in the next section. Hence, let k h and k l represent the number of preambles to be simultaneously transmitted at Step1 by the devices with high-priority and low-priority, respectively, and [19] and k h = k l = 1 in current LTE/LTE-A/5G systems [18].…”

Section: System Modelmentioning

confidence: 99%

“…Recently, an RA parallelization (RAP) technique was proposed [19], which generalizes the conventional RA procedure by relaxing the constraint on the number of simultaneously transmitted preambles at Step1 of the RA procedure. 3 We notice that the functionality of access priority can be implemented by differentiating the number of simultaneously transmitted preambles according to the access priority.…”

Section: B Key Featuresmentioning

confidence: 99%

“…(1) 7 In our proposed technique, even though each IoT device experiences a few preamble collisions it can successfully complete the RA procedure due to the preamble diversity effect [19]. Thus, we use the term 'failure' rather than 'collision'.…”

Section: Performance Analysismentioning

confidence: 99%

See 4 more Smart Citations

Access Priority Provisioning Based on Random Access Parallelization for Prioritized Cellular IoT

et al. 2021

Self Cite

View full text Add to dashboard Cite

In order to support diverse access requirements from various internet-of-things (IoT) applications, we propose a novel access priority provisioning technique that can be applied to the random access (RA) procedure in cellular networks. A key feature of our proposed technique is to allow for each IoT device to differentiate the number of simultaneously transmitted preambles during the RA procedure according to its own access priority. Since simultaneous transmission of multiple preambles (i.e., RA parallelization) can achieve the diversity effect during the access phase (i.e., RA procedure), the IoT devices using more preambles can achieve better access performance compared to those using fewer preambles. This motivates us to newly propose our access priority provisioning technique. We mathematically analyze our proposed technique in terms of the RA failure probability and validate our analytical framework with extensive computer simulations. From the results, we verify the feasibility of our proposed technique for supporting diverse access priorities during the access phase (i.e., RA procedure) without significant modifications to the conventional one.

show abstract

Section: Numerical Resultsmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

Section: B Key Featuresmentioning

confidence: 99%

Section: Performance Analysismentioning

confidence: 99%

See 3 more Smart Citations