Zhu, Y;
Zheng, G;
Wang, L;
Wong, K-K;
Zhao, L;
(2018)
Performance Analysis and Optimization of Cache-Enabled Small Cell Networks.
In: Kwong, D-L and Lee, SL and Mok, PL and Wong, L and Liang, Y-C and Sun, S, (eds.)
GLOBECOM 2017 - 2017 IEEE Global Communications Conference.
IEEE
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Abstract
This paper studies the performance of cache-enabled dense small cell networks consisting of multi- antenna sub-6 GHz and millimeter-wave base stations. We first derive the successful content delivery probability by accounting for the key channel features at sub-6 GHz and mmWave frequencies. In general, the optimal content placement is unknown when the base stations have multiple antennas. Then we propose a simple yet effective probabilistic content placement scheme to maximize the successful content delivery probability, which could balance caching both the most popular contents and achieving content diversity. Numerical results demonstrate that our proposed content placement scheme yields significantly better performance than only caching the most popular contents. The comparisons between the sub-6 GHz and millimeter-wave systems reveal an interesting tradeoff between caching capacity and base station density for the millimeter-wave system to achieve similar performance as the sub-6 GHz system.
| Type: | Proceedings paper |
|---|---|
| Title: | Performance Analysis and Optimization of Cache-Enabled Small Cell Networks |
| Event: | GLOBECOM 2017, 2017 IEEE Global Communications Conference, 4-8 December 2017, Singapore |
| Location: | YourSingapore, Singapore, SINGAPORE |
| Dates: | 04 December 2017 - 08 December 2017 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/GLOCOM.2017.8254810 |
| Publisher version: | https://doi.org/10.1109/GLOCOM.2017.8254810 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10047810 |
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