New 5G air interface: challenges for efficient multi-service coexistence for 5G below 6 GHz

New 5G air interface: challenges for efficient multi-service coexistence for 5G below 6 GHz

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This chapter has provided a view of the current service and use case landscape for 5G networks. It also performs a selection among these use cases so that a flexible air interface design for spectrum below 6 GHz can be performed. Challenges for this design on link and system levels are then briefly discussed along with their research topics and the evaluation methodology for the corresponding technical components. We finally note that the design of a new air interface is heavily composed of topics requiring standardization, e.g., waveform and frame design, PHY layer procedures, transceiver processing (interference management, multiuser reception, etc.), channel coding, adaptive coding and modulation, etc. These are all topics that imply interfaces, messages, signalling, protocols (all of which are standardized in 3GPP) rather than proprietary algorithmic solutions and an important challenge for researchers is to be able to interact with standardization bodies, especially 3GPP, in a timely manner.

Chapter Contents:

  • 2.1 Introduction
  • 2.1.1 Chapter contributions
  • 2.2 Core services and their associated KPIs
  • 2.2.1 Core services
  • 2.2.2 Key performance indicators
  • 2.2.3 KPI relevance to core services
  • 2.3 Use cases from the 5G literature
  • 2.3.1 Use cases from METIS/METIS-II projects
  • 2.3.2 NGMN use cases
  • 2.3.3 3 GPP SMARTER SI use cases
  • 2.4 The 5G use cases from FANTASTIC-5G
  • 2.4.1 Detailed 5G use cases for RAN design
  • 2.4.2 Selected FANTASTIC-5G use cases
  • 2.5 Challenges for 5G design below 6 GHz
  • 2.5.1 Design methodology
  • 2.5.2 Service integration drivers
  • 2.5.3 Link level challenges
  • 2.5.4 System level challenges
  • 2.6 System-level evaluation of technical components
  • 2.7 Conclusions
  • Acknowledgement
  • References

Inspec keywords: 5G mobile communication

Other keywords: 5G networks; multiservice coexistence; flexible air interface design; 5G air interface; protocols; 3GPP

Subjects: Mobile radio systems

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