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Energy-Efficient Uplink Scheduling in Narrowband IoT.
Farah Yassine1,2, Melhem El Helou2, Samer Lahoud2
1Ecole Doctorale des Sciences et Technologies, Lebanese University, Hadath 11-8281, Lebanon.
Sensors (Basel, Switzerland)
|October 27, 2022
Summary
This study optimizes energy efficiency for Narrowband Internet of Things (NB-IoT) networks by developing joint and successive scheduling schemes. The joint scheme maximizes energy efficiency and device connections but increases complexity.
Area of Science:
- Wireless Communication Networks
- Internet of Things (IoT)
Background:
- Narrowband Internet of Things (NB-IoT) networks are crucial for long battery life applications.
- Efficient uplink scheduling is essential for maximizing energy efficiency in NB-IoT.
Purpose of the Study:
- To maximize energy efficiency in NB-IoT networks while meeting device requirements.
- To investigate the correlation between link adaptation and resource allocation in NB-IoT scheduling.
- To propose and evaluate novel scheduling schemes and device selection techniques.
Main Methods:
- Developed two uplink scheduling schemes: joint and successive.
- Proposed two device selection techniques: exhaustive search and priority score-based sorting.
- Analyzed the impact of device selection on overall energy efficiency.
Main Results:
- The joint scheduling scheme demonstrated superior energy efficiency and served more devices compared to the successive scheme.
- The joint scheme, however, exhibited higher computational complexity.
- Both proposed device selection techniques significantly impacted scheduling performance.
Conclusions:
- The joint scheduling approach is more effective for enhancing energy efficiency and device capacity in NB-IoT.
- Careful device selection is critical for optimizing NB-IoT uplink scheduling performance.
- Further research can explore complexity reduction for the joint scheme.
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