ZHANG Jun, TIAN Hui. An Isotropic SPPP Model for Femtocells Networks with Outage Probability Constraints[J]. Chinese Journal of Electronics, 2015, 24(4): 824-831. doi: 10.1049/cje.2015.10.027
Citation: ZHANG Jun, TIAN Hui. An Isotropic SPPP Model for Femtocells Networks with Outage Probability Constraints[J]. Chinese Journal of Electronics, 2015, 24(4): 824-831. doi: 10.1049/cje.2015.10.027

An Isotropic SPPP Model for Femtocells Networks with Outage Probability Constraints

doi: 10.1049/cje.2015.10.027
Funds:  This work is supported by the National Science and Technology Major Project (No.2015ZX03001025-002), the National Natural Science Foundation of China (No.61471060) and the Funds for Creative Research Groups of China (No.61421061).
  • Received Date: 2014-09-29
  • Rev Recd Date: 2015-04-23
  • Publish Date: 2015-10-10
  • Femtocells have been considered as a cost-effective solution to unload traffic from already overburdened macrocell networks in 4G cellular networks. The severe interference in spectrum-sharing macro and femto networks may cause User-equipment (UE) to experience outage. We derive an utmost isotropic Spatial Poisson point process (SPPP) density for Femtocell access points (FAPs) under the UEs' outage constraints. Based on the derived isotropic SPPP density, we propose a distributed transmit probability self-regulation scheme for an FAP to adapt its transmit probability per Transmission time interval (TTI). The scheme adjusts the homogeneous distributed FAPs in practice deployment to the proposed isotropic one. Simulation results show that the derived density can fulfill the outage probability constraints of UEs while accommodating the maximum femtocells. The self-regulation scheme can adapt the femtocell transmit probabilities to provide reliable downlink service, for even a large number of femtocells per cell site.
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