A Non-orthogonal Random Access Scheme Based on NB-IoT
| Autor: | Dan Wang, Yongli Fu, Chen Qirong, Qu Yuanyuan, Yang Yanjuan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science 020206 networking & telecommunications Throughput 02 engineering and technology Network layer Computer Science Applications Narrowband Transmission (telecommunications) Single antenna interference cancellation 0202 electrical engineering electronic engineering information engineering Key (cryptography) 020201 artificial intelligence & image processing Electrical and Electronic Engineering business Throughput (business) Random access Computer network |
| Zdroj: | Wireless Personal Communications. 111:2625-2639 |
| ISSN: | 1572-834X 0929-6212 |
| DOI: | 10.1007/s11277-019-07006-5 |
| Popis: | Narrowband Internet of Things (NB-IoT) is a Quasi-5G technology that will provide coverage for massive number of low-power consumption applications. Hence, the potential massive random access (RA) users call for a new RA scheme. In this paper, based on the key ideas of non-orthogonal multiple access and successive interference cancellation, the NB-IoT non-orthogonal random access (NB-NORA) scheme has been proposed to provide a more effective access performance for NB-IoT system. Further, the RA preamble (MSG1) transmission collision probability and initial layer 3 message (MSG3) outage performances are analyzed based on stochastic geometry, which is compared with the traditional NB-IoT orthogonal random access (NB-ORA) scheme. Simulation results show that the maximum throughput of MSG1 within NB-NORA scheme is double that within NB-ORA scheme, and the successful RA probability of NB-NORA is increased by about 75%. |
| Databáze: | OpenAIRE |
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