Community Research and Development Information Service - CORDIS


Wi-5 Report Summary

Project ID: 644262
Funded under: H2020-EU.

Periodic Reporting for period 1 - Wi-5 (What to do With the Wi-Fi Wild West)

Reporting period: 2015-01-01 to 2015-12-31

Summary of the context and overall objectives of the project

The Wi-5 project aims to address radio interference and spectrum inefficiency by integrating novel smart functionalities into Wi-Fi Access Points enabling local coordination to reduce radio interference and optimize Wi-Fi spectrum usage. An inter-operator cooperation platform enables coordination between APs of different operators and supports seamless handover/offloading to other Wi-Fi networks or to non-Wi-Fi networks such as 3G/4G/5G or fixed networks. Wi-5 also supports the use of packet grouping techniques to maximise the efficiency of small-packet applications such as voice and gaming applications. The developed functionalities will be integrated into a single optimized Wi-5 architecture and an Openflow-based Software Defined Networking (SDN) approach has been adopted to manage the resulting wireless network. Figure 1 outlines the architecture and the main functionalities proposed in Wi-5 to be integrated in Wi-Fi Access Points.

This Wi-5 project is funded by EC for the duration of 3 years (January 2015 – December 2017) and is led by Liverpool John Moores University. The full consortium is as follows:

• Liverpool John Moores University (LJMU), UK
• Nederlandse Organisatie voor Toegepast (TNO), Netherlands
• Universidad de Zaragoza (UniZar), Spain
• Telefonica Investigation Desarrollo SA (Telefonica), Spain
• AirTies Kablosuz İletişim San. ve Dış Tic. A.Ş (AirTies), Turkey

Work performed from the beginning of the project to the end of the period covered by the report and main results achieved so far

Wi-5 begun its second year in January 2016. We have currently designed and presented initial Wi-5 architecture according to the guidelines set in the ISO-IEEE standards, which takes into account the requirements for new business roles which support Wi-5 operations and the use cases we envision. These roles will not only facilitate Inter-Operator Cooperation on the spectrum plane, but will also enable Inter-Operator Cooperation on the business plane.

As part of the Wi-5 integrated solution, a novel AP selection algorithm has been developed which associates users to Wi-Fi Access Points and performs channel assignment to minimize spectrum congestion in dense Wi-Fi environments. The AP selection algorithm is based on an innovative performance and QoS evaluation metric called Fittingness Factor (FF) that considers the heterogeneity of the requirements for different stations accessing the network. We compared our solution against two existing approaches found in the literature. The proposed channel assignment algorithm uses the SDN controller to centralise management of the spectrum and assign channels dynamically according to network-wide interference indicators and user-side quality metrics. Our channel assignment algorithm was compared against the existing approaches found in the literature, and our results show that it performs better than the state of the art in terms of SINR and spectrum efficiency and users’ satisfaction.

We have already begun to integrate our approach for dynamic AP channel assignment into a prototype SDN platform based on OpenWRT and Odin, and we are now extending this to support power control and load balancing. This is being developed as an open source project ( and we are actively building a developer community around our work. We are also looking to include monitoring and packet grouping in the near future. The project technical work is being guided by the Wi-5 Expert Advisory Board, which acts as a sounding board for our research, and validated by our Operator Board, which provides practical feedback from the perspective of deployment and operation.

Progress beyond the state of the art and expected potential impact (including the socio-economic impact and the wider societal implications of the project so far)

Upon the completion of the project tasks, we will be able to make contribution to the following areas:

• Reduce interference between neighbouring Access Points
• Improve spectrum usage efficiency and Quality of Experience for end users
• Provide a new approach toward seamless handovers from Wi-Fi network to other Wi-Fi and non-Wi-Fi networks supported by new multi-operator business models
• Improve efficiency and QoE in emerging real-time and streaming applications and overcoming the barriers that limit the performance of conventional mechanisms
• Help to develop a mature Wi-Fi market as an alternative to commercial 3G/4G networks. This Wi-Fi market will not only represent a cheaper alternative to mobile broadband but it will also provide higher bandwidth, and reduce the traffic load on 3G/4G networks

Wi-5 has an extensive plan to maximize our impact through scientific dissemination, industrial exploitation, and standardization. We also have an active presence on Twitter ( and Linked-In ( The platform we develop will be made available to the research community as open source software and the novel functionalities will be published in academic journals and conference proceedings. The results of the Wi-5 project are being shared with an Operator Board of European companies and organizations that provide periodic feedback on our progress. Along with the industrial consortium members, they will also provide a first point of industrial exploitation for our work. Ultimately we aim to have our work adopted for inclusion in upcoming standards where possible.

Related information

Record Number: 186366 / Last updated on: 2016-07-11