Full-duplex spectrum sensing and fairness mechanisms for Wi-Fi/LTE-U coexistence
- Publication Type:
- Conference Proceeding
- Citation:
- 2016 IEEE Global Communications Conference, GLOBECOM 2016 - Proceedings, 2016
- Issue Date:
- 2016-01-01
Closed Access
| Filename | Description | Size | |||
|---|---|---|---|---|---|
| Full-duplex Spectrum Sensing and Fairness.pdf | Published version | 416.17 kB |
Copyright Clearance Process
- Recently Added
- In Progress
- Closed Access
This item is closed access and not available.
© 2016 IEEE. In this paper, we investigate the coexistence problem between Wi-Fi and a pre-standard form of LTE over unlicensed bands, namely, LTE-Unlicensed (LTE-U). We address two coexistence problems. First, the different access mechanisms for Wi-Fi and LTE-U can lead to an increase in the collision rate and higher latency for both systems. We propose a modified Wi-Fi operation mode, whereby Wi-Fi stations (STAs) carry out simultaneous spectrum sensing and transmission to reduce the time required for collision detection. Specifically, we propose and analyze a full-duplex (FD) based detection framework that can differentiate between Wi-Fi and LTE-U signals while taking into account residual self- interference. Second, the ability to differentiate between Wi-Fi and LTE-U signals motivates the idea of adapting the clear channel assessment (CCA) threshold according to the type of the detected signal. Inspired by upcoming Wi-Fi standards (e.g., IEEE 802.11ax), we propose a CCA threshold adaptation scheme and study via simulations its optimal setting so as to maximize the spatial reuse while maintaining fairness between LTE-U and Wi-Fi systems.
Please use this identifier to cite or link to this item: