PRACH Power Control Mechanism for Improving Random-Access Energy Efficiency in Long Term Evolution
| Autor: | Tiago P. C. de Andrade, Nelson L. S. da Fonseca, Carlos A. Astudillo, Fernando H. S. Pereira |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
020302 automobile design & engineering 020206 networking & telecommunications 02 engineering and technology Energy consumption Transmitter power output Preamble Reliability engineering 0203 mechanical engineering User equipment Random-access channel 0202 electrical engineering electronic engineering information engineering Random access Efficient energy use Power control |
| Zdroj: | 2018 IEEE 10th Latin-American Conference on Communications (LATINCOM) LATINCOM |
| DOI: | 10.1109/latincom.2018.8613252 |
| Popis: | The Random Access (RA)procedure is one of the most frequently used and energy consuming operations in LTE User Equipment (UE)devices. However, little attention has been given to its energy-efficient operation in the literature. In this paper, we propose two Physical Random Access Channel (PRACH)power control mechanisms for improving the energy efficiency of the overall RA procedure. Our proposals increase the preamble transmit power based on special characteristics of the UE energy consumption behavior. By doing this, the number of transmitted preamble per successful RA procedure decreases, thus obtaining important energy savings. Our simulation results show that our proposals can reduce up to 41 percent the energy consumption of the RA procedure when compared to the standardized PRACH power control mechanism with power ramping. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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