6533b7dbfe1ef96bd12700f4

RESEARCH PRODUCT

On optimal relay placement for improved performance in non-coverage limited scenarios

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Low power nodes have been a hot topic in research, standardization, and industry communities, which is typically considered under an umbrella term called heterogeneous networking. In this paper we look at the problem of deploying optimally low power nodes in the context of relay networking, when an operator connects low power nodes (or small cells) via the wireless backhaul that uses the same spectrum and the same wireless access technology. We present an analytical model that can calculate optimal coordinates for low power nodes based on the input parameters, such as preferred number of nodes, their transmission power, parameters of the environment etc. The analytical calculations are complemented by extensive dynamic system level simulations, by means of which we analyze overall system performance for the obtained coordinates. We also show that even relatively marginal deviations from optimal coordinates can lead to worse system performance.