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There is a need to increase the capacity of cellular networks to support the successful growth of mobile broadband usage. Network densification with HetNet (Heterogeneous Networks) is identified as a key method to meet future demands. In this paper one promising HetNet component is studied, the low power pico node. The 3GPP LTE (Long Term Evolution) pico features are described and the deployment aspects are investigated by means of simulations. It is found that with good deployment the capacity increase from low power nodes can be significantly improved. Capturing hot spot traffic has larger impact on performance than radio access features like range extension. Thus, knowing the hot spot cluster positions and ability to deploy the pico node near these positions is important. Also the hotspot positions relative the overlaying macro cells have impact.
Date of Conference: 5-9 June 2011