Analysis of Downlink Connectivity Models in a Heterogeneous Cellular Network via Stochastic Geometry

作者：Madhusudhanan Prasanna^*; Restrepo Juan G; Liu Youjian; Brown Timothy X

来源：IEEE Transactions on Wireless Communications, 2016, 15(6): 3895-3907.

DOI：10.1109/TWC.2016.2530723

• Multi-tier networks
• Cellular Radio
• Co-channel Interference
• Fading channels
• Poisson point process
• max-SINR connectivity
• nearest-BS connectivity

In this paper, a comprehensive study of the downlink performance in a heterogeneous cellular network (or HetNet) is conducted via stochastic geometry. A general HetNet model is considered consisting of an arbitrary number of open-access and closed-access tiers of base stations (BSs) arranged according to independent homogeneous Poisson point processes. The BSs within each tier have a constant transmission power, random fading factors with an arbitrary distribution and arbitrary path-loss exponent of the power-law path-loss model. For such a system, analytical characterizations for the coverage probability are derived for the max-SINR connectivity and nearest-BS connectivity models. Using stochastic ordering, interesting properties and simplifications for the HetNet downlink performance are derived by relating these two connectivity models to the maximum instantaneous received power (MIRP) connectivity model and the maximum biased received power (MBRP) connectivity models, providing good insights about HetNets and their downlink performance in these complex networks. Furthermore, the results also demonstrate the effectiveness and analytical tractability of the stochastic geometric approach to study the HetNet performance.

• 出版日期2016-6