Network Coded Modulation for Next Generation Wireless Access Networks

Lead Research Organisation: University of Reading
Department Name: Sch of Systems Engineering

Abstract

In view of the rapid increase in demand for mobile data services, next generation wireless access networks will have to provide greatly increased capacity density, up to 10 Gbps per square kilometre. This will require a much larger density of very small, cheap and energy-efficient base stations, and will place increasing demand on the bandwidth and energy efficiency of the network, and especially the backhaul network. Recent work on network MIMO, or coordinated multipoint (CoMP) has shown that by ensuring base stations cooperate to serve users, especially those close to cell edge, rather than interferring with one another, inter-user interference can be effectively eliminated, greatly increasing the efficiency of the network, in terms of both spectrum and energy. However this tends to greatly increase the backhaul load.

This work proposes a form of wireless network coding, called network coded modulation, as an alternative to conventional CoMP. This also enables base station cooperation, but instead of sending multiple separate information flows to each base station, flows are combined using network coding, which in principle allows cooperation with no increase in backhaul load compared to non-cooperative transmission, while gaining very similar advantages to CoMP in terms of bandwidth and energy efficiency.

The objective of the proposed work is to establish the practical feasibility of this approach, and evaluate its benefits, as applied to next generation wireless access networks. To this end it will develop practical signalling schemes, network coordination and management protocols, and, with the help of industrial collaborators, will ensure compatibility with developing wireless standards.

Related Projects

Project Reference Relationship Related To Start End Award Value
EP/K040685/1 01/02/2014 31/05/2016 £306,224
EP/K040685/2 Transfer EP/K040685/1 01/06/2016 31/12/2017 £99,440
 
Description - A new Network Coding based scheme for backhauling has been proposed and published. This results have now been cited by other authors as well.

- A random geometry based model for transmission delay for ultra dense networks as well as the corresponding energy efficiency has been derived and published.
Exploitation Route The impact of caching will be explored to improve the bandwidth and energy efficiency of the backhauling systems for ultra dense networks.
Sectors Digital/Communication/Information Technologies (including Software)

 
Description EPSRC responsive mode
Amount £99,440 (GBP)
Funding ID EP/K040685/2 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Academic/University
Country United Kingdom
Start 06/2016 
End 12/2017
 
Description BT 
Organisation BT Group
Department BT Research
Country United Kingdom 
Sector Private 
PI Contribution The research resuts provided significant insights for BT in terms of the benefits and challenges of distributed diversity for future generation wirless systems.
Collaborator Contribution Industry guidance for our reseach effort.
Impact Publications and successor projects.
Start Year 2006
 
Description BT 
Organisation University of York
Country United Kingdom 
Sector Academic/University 
PI Contribution The research resuts provided significant insights for BT in terms of the benefits and challenges of distributed diversity for future generation wirless systems.
Collaborator Contribution Industry guidance for our reseach effort.
Impact Publications and successor projects.
Start Year 2006
 
Description BT 
Organisation Vodafone
Country United Kingdom 
Sector Private 
PI Contribution The research resuts provided significant insights for BT in terms of the benefits and challenges of distributed diversity for future generation wirless systems.
Collaborator Contribution Industry guidance for our reseach effort.
Impact Publications and successor projects.
Start Year 2006