Analysis of D2D Underlaid Cellular Networks: SIR Meta Distribution and Mean Local Delay
Analysis of D2D Underlaid Cellular Networks: SIR Meta Distribution and Mean Local Delay
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DOI：
10.1109/tcomm.2017.2691704
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发表时间：
2017-04
影响因子：
8.3
通讯作者：
M. Salehi;A. Mohammadi;M. Haenggi
中科院分区：
文献类型：
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作者：
M. Salehi;A. Mohammadi;M. Haenggi
我们根据信号干扰比（SIR）的元分布研究了蜂窝无线网络下设备对设备（D2D）通信的性能，SIR是给定无线节点位置的条件SIR分布的分布。将D2D发射机和基站建模为泊松点过程（PPPs），推导条件SIR分布的矩，以计算典型D2D接收机和蜂窝下行用户的元分布和平均局部延迟的解析表达式。结果表明，对于D2D用户，来自D2D干扰源和基站的总干扰在分布上与单个PPP相等，而对于下行链路用户，来自D2D网络的干扰影响更为复杂。我们还推导了导致有限平均局部延迟的D2D用户和基站的发射概率区域，并给出了该区域的简单内界。最后，用数值结果研究了增加基站密度对平均本地延迟、元分布和可靠服务用户密度的影响。
We study the performance of device-to-device (D2D) communication underlaying cellular wireless network in terms of the meta distribution of the signal-to-interference ratio (SIR), which is the distribution of the conditional SIR distribution given the locations of the wireless nodes. Modeling D2D transmitters and base stations as Poisson point processes (PPPs), moments of the conditional SIR distribution are derived in order to calculate analytical expressions for the meta distribution and the mean local delay of the typical D2D receiver and cellular downlink user. It turns out that for D2D users, the total interference from the D2D interferers and base stations is equal in distribution to that of a single PPP, while for downlink users, the effect of the interference from the D2D network is more complicated. We also derive the region of transmit probabilities for the D2D users and base stations that result in a finite mean local delay and give a simple inner bound on that region. Finally, the impact of increasing the base station density on the mean local delay, the meta distribution, and the density of users reliably served is investigated with numerical results.