Spectral coexistence of 5G networks and satellite communication systems enabled by coordinated caching and QoS-aware resource allocation

Konstantinos Ntougias, Constantinos B. Papadias, Georgios K. Papageorgiou, Gerhard Hasslinger

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Abstract

The combination of underlay spectrum sharing and coordinated multi-point technologies promises substantial spectral efficiency (SE) gains for 5G cellular networks. In this work, we present a family of simple cooperative mobile edge caching strategies that create joint transmission (JT) opportunities and make use of the non-computational-demanding score-gated least recently used (SG-LRU) caching scheme to achieve high cache hit rate, thus increasing the sum-SE and reducing both the backhaul traffic and the content access latency. In addition, we derive a low-complexity coordinated quality-of-service (QoS) aware resource allocation scheme that maximizes the sum-SE of coordinated beamforming (CBF) under given transmission power per base station, inter-system interference power, and per-user QoS constraints as well as simple alternatives for both CBF and JT. We consider a use case where a cellular network coexists with a fixed satellite service earth station in the 3.7-4.2 GHz C-band. Numerical simulations illustrate the performance gains of the proposed coordinated caching and resource allocation strategies and shed light on the impact of various parameters on their efficiency.

Original languageEnglish
Title of host publication2019 27th European Signal Processing Conference (EUSIPCO)
PublisherIEEE
ISBN (Electronic)9789082797039
DOIs
Publication statusPublished - 18 Nov 2019
Event27th European Signal Processing Conference 2019 - A Coruna, Spain, A Coruna, Spain
Duration: 2 Sep 20197 Sep 2019
http://eusipco2019.org/

Publication series

NameEuropean Signal Processing Conference
ISSN (Electronic)2076-1465

Conference

Conference27th European Signal Processing Conference 2019
Abbreviated titleEUSIPCO
CountrySpain
CityA Coruna
Period2/09/197/09/19
Internet address

Keywords

  • Cooperative content caching redundancy enhancement (C3RE)
  • Coordinated Multi-Point (CoMP)
  • Coordinated QoS-aware interference-constrained PA (CQA-ICPA)
  • Interference-constrained equal power allocation (ICEPA)
  • Score-gated least-recently used (SG-LRU)

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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  • Cite this

    Ntougias, K., Papadias, C. B., Papageorgiou, G. K., & Hasslinger, G. (2019). Spectral coexistence of 5G networks and satellite communication systems enabled by coordinated caching and QoS-aware resource allocation. In 2019 27th European Signal Processing Conference (EUSIPCO) [8903063] (European Signal Processing Conference). IEEE. https://doi.org/10.23919/EUSIPCO.2019.8903063