A Flexibility Metric and Optimization Methods for Mixed Numerologies in 5G and beyond
IEEE Access, cilt.6, ss.3755-3764, 2018 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 6
- Basım Tarihi: 2018
- Doi Numarası: 10.1109/access.2018.2795752
- Dergi Adı: IEEE Access
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.3755-3764
- Anahtar Kelimeler: Adaptive scheduling, communication effectiveness, context awareness, OFDM, resource management, user centered design
- İstanbul Medipol Üniversitesi Adresli: Evet
Özet
Mixed numerology-based frame structures will be a part of 5G systems in order to enhance overall flexibility and user satisfaction. However, inter-numerology interference, spectral efficiency reduction, complexity, and signaling overhead type of issues arise in such structures. It is needed to limit the number of numerologies used together. In this paper, a novel heuristic method is developed to find the efficient number of mixed numerologies. The proposed method aims to control overheads in systems using multi-numerology structures. Analysis of the trade-offs and relationships between different services and user requirements are also presented. The designed algorithm employs a new flexibility function and performance metric. Simulation results are shown for three different numerology sets, which include 5G numerologies.