Analysis of Uplink Co-Channel Interference on the Cellular Networks

New duplexing methods are emerging to improve spectral efficiency (SE) and reduce delay as wireless network evolves. Dynamic time division duplexing (D-TDD) and in-band full duplex (IFD) systems are strong candidate technologies for next-generation wireless communication. Recently, many studies about above two duplexing methods have been conducted through stochastic geometry models. For uplink direction, however, existing studies do not adequately reflect the geographical characteristics of the newly introduced interference. In this paper, to increase the accuracy of analysis, we re-derive two types of uplink interference considering the geometrical relationship and dependency between typical base station (BS) and other cell nodes (e.g., BS and(or) user equipment (UE)). Also, we analyze the outage probabilities on the D-TDD and IFD systems under the homogeneous network focusing on the uplink direction. The results show that our derived outage probability matches very well with the Poisson Point Process (PPP) simulation among the existing uplink analysis.