摘要：

基于最大-最大用户对级联(MM-UPA)准则,研究双跳中继协作异构网络的中断性能。借助随机几何和概率统计数学工具,将网络节点空间位置建模为齐次泊松点过程,以推导双跳中继协作异构网络中断概率的解析表达式。在此基础上,针对中断门限和偏置因子对系统中断概率的影响进行仿真与分析,结果表明,当系统部署MM-UPA方案时,增大第k(k≥2)层网络的偏置因子,能够有效降低第1层网络的中断概率,提高系统稳定性。此外,相比双跳网络,单跳网络的中断概率更小,系统稳定性更高。

关键词: 异构网络, 用户对级联, 中继, 随机几何, 中断概率

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.

Key words: heterogeneous networks, User Pair Association(UPA), relay, stochastic geometry, outage probability

中图分类号: 

• TN929.5