Validation and assessment of the objectives

Objectives


WP6 aims at experimenting the most promising techniques proposed by LEXNET to assess and reduce the EMF exposure in wireless communication networks, leading to demonstration, validation and evaluation of those techniques. The specifications of the most promising solutions elaborated in WP3 (assessment methodologies and dosimeters), WP4 (low-EMF components) and WP5 (optimized topologies and innovative network management techniques) will be implemented in real-world prototypes, system-level simulators or laboratory hardware testbeds to carry out assessment studies. The impact of LEXNET techniques will be evaluated in terms of user experience and EMF exposure reduction.



Methodology


WP6 activities started 6 months after the beginning of the project. The main characteristics of the measurement tools and testbeds to be developed and/or exploited were defined in a first stage, mainly during the first year. The work by WP6 partners then focused, in the second year, on the development (hardware and software) of the tools, the elaboration of the scenarios, and the implementation of the EI assessment methodologies. In particular, two types of dosimeters were prototyped, validated and produced for measurement of the DL exposure: a low-cost version for implementation in the SmartSantander wireless sensor network; and a full-complexity version for wearable or drive-test measures. Last stage in WP6 will consist in the production of evaluation results and demonstrations.



Main Results


The WP6 validation platform is being developed with a two-fold objective: study the feasibility of the techniques and solutions (both within radio link components and network management entities) that LEXNET is proposing to reduce the exposure; and assess the EI itself, in particular over real networks, by means of different methodologies. The platform is composed of laboratory testbeds, network simulation tools, WLAN networks, a real cellular network and the SmartSantander wireless sensor network. It is described in details in the Deliverable D6.1, Validation platform framework and initial assessment, May 2014.

The main technical result, up to now, is the production of 50 low-cost dosimeters that are being integrated into the SmartSantander platform to collect and publish in live the DL exposure level over a significant part of the Santander city (Spain).



Technical Impact


WP6 is going to provide two main technical results at the end. First, several EI assessment methodologies will be demonstrated, based on radio-planning techniques, drive-test measurement tools, monitoring techniques and/or a wireless sensor network. This proof-of-concept will serve in the standardization of the EI measurement methodology; and could be used as a reference by different kinds of stackholders (from equipment manufacturers to public authorities) in future development or monitoring of low-EMF networks.
Second, LEXNET methods or technologies will be demonstrated and evaluated together in terms of Quality of Service (QoS) and EI: network design optimization; smart resource management; small-cells densification; idle mode; low-noise front end; and beamforming. The results will contribute in the characterization and promotion of techniques found relevant in terms of EMF minimization.



Social Impact


WP6 will contribute to the minimization of the population’s exposure by providing the necessary proof-of-concept in the standardization of the new LEXNET metric, but also by demonstrating how the new EI can be assessed by the network operators, regulators or public authorities when designing, controlling or deciding the wireless network deployment. The main innovation brought by LEXNET in the exposure assessment is obviously the consideration of the uplink component in addition to the traditional downlink exposure caused by the base stations. If accepted by all involved stake-holders, the implementation of this concept may significantly change the way the wireless networks are built and the way the population impacts the deployments and selection of technologies (e.g. small-cell densification).