Analysis for Outage Probability of Two-hop Relay Cooperative Heterogeneous Networks

Abstract

Based on the Maximum-Maximum User Pair Association(MM-UPA) criterion,the outage performance of two-hop relay cooperative heterogeneous networks is studied.By means of stochastic geometry and probability statistics,the spatial location of network nodes is modeled as a Homogeneous Poisson Point Process(HPPP),and the analytical expression of outage probability in two-hop relay cooperative heterogeneous networks is derived.On this basis,the impact of outage threshold and bias factor on system outage probability is simulated and analyzed.Results show that when the system deploys MM-UPA scheme,increasing the bias factor of tier k(k≥2) can effectively reduce the outage probability of tier 1 and improve system stability.In addition,the outage probability of single-hop network is smaller and the system stability is higher than that of two-hop networks.