Control data separation and its implications on backhaul networks

Control data separation and its implications on backhaul networks

For access to this article, please select a purchase option:

Buy chapter PDF
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for £75.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Access, Fronthaul and Backhaul Networks for 5G & Beyond — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

As soon as 2020, network densification will be the dominant theme to support enormous capacity and massive connectivity. However, such deployment scenarios raise several challenges and they impose new constraints. In particular, signalling load, mobility management and energy efficiency will become critical considerations in the fifth generation (5G) era. These aspects suggest a paradigm shift towards a signalling and energy conscious radio access network (RAN) architecture with intelligent mobility management. In this direction, the conventional RAN design imposes several constraints due to the tight coupling between the control plane (CP) and the data plane (DP). Recently, a futuristic RAN architecture with CP/DP separation has been proposed to overcome these constraints. In this chapter, we discuss limitations of the conventional RAN architecture and present the control/data separation architecture (CDSA) as a promising solution. In addition, we identify the impact of the CDSA on the backhaul network. An analytical framework is developed to model the backhaul latency of the CDSA, and a densification limit under latency constraints is derived. Furthermore, the impact of the backhaul technology on the CDSA energy saving gains is discussed and an advanced non-direct backhaul mechanism is presented.

Chapter Contents:

  • Abstract
  • 14.1 Introduction
  • 14.2 RAN design in legacy standards
  • 14.2.1 Always-on design
  • 14.2.2 Worst-case design
  • 14.2.3 Distributed management design
  • 14.3 5G RAN with control/data separation
  • 14.3.1 On-demand always-available design
  • 14.3.2 Adaptive design
  • 14.3.3 Almost centralised management design
  • 14.4 Main challenge: backhaul networks
  • 14.4.1 Impact of separation schemes on data plane backhaul latency
  • Data plane backhaul propagation delay
  • Data plane backhaul transmission delay
  • Data plane backhaul processing delay
  • DBS densification limit under backhaul latency constraints
  • 14.4.2 Impact of backhaul technology on energy efficiency
  • 14.4.3 Alternative backhaul mechanisms
  • 14.5 Conclusion
  • Appendix A: Proof of lemma 14.1
  • References

Inspec keywords: radio access networks; telecommunication power management; energy conservation

Other keywords: CDSA energy saving; control data separation architecture; radio access network architecture; RAN architecture; backhaul network; backhaul latency

Subjects: Radio access systems

Preview this chapter:
Zoom in

Control data separation and its implications on backhaul networks, Page 1 of 2

| /docserver/preview/fulltext/books/te/pbte074e/PBTE074E_ch14-1.gif /docserver/preview/fulltext/books/te/pbte074e/PBTE074E_ch14-2.gif

Related content

This is a required field
Please enter a valid email address