论文标题
在城市环境中移动设备到设备网络中的连接性
Connectivity in mobile device-to-device networks in urban environments
论文作者
论文摘要
在本文中,我们设置了一个动态的设备对设备通信系统,其中设备作为泊松点过程给出,在环境中移动,该设备由随机平面 - 细胞类型的街道系统通过随机通道模型给出。每个设备都使用一般的Waypoint内核在街道系统上独立选择目标位置,并沿着街道上最短的路径以单独的速度前往目标。然后,任何一对设备在足够长的时间内都足够靠近时,每当它们在同一条街道上时都可以连接。在介绍了多参数系统的一些一般属性之后,我们重点介绍了对随机连接图的聚类行为的分析。在我们的主要结果中,如果设备强度太小,或者连接时间太大,则我们分离了几乎没有渗透的机制。另一方面,在其他参数的有利选择下,我们表现出足够大的设备强度的参数状态,以便以阳性概率可以实现渗透。最有趣的是,随着速度的增加,我们还表现出渗透率。对系统的严格分析主要取决于比较参数与简化模型通过空间粗晶片和变薄方法。在这里,我们还与无限范围依赖性的地统计渗透模型接触。
In this article we setup a dynamic device-to-device communication system where devices, given as a Poisson point process, move in an environment, given by a street system of random planar-tessellation type, via a random-waypoint model. Every device independently picks a target location on the street system using a general waypoint kernel, and travels to the target along the shortest path on the streets with an individual velocity. Then, any pair of devices becomes connected whenever they are on the same street in sufficiently close proximity, for a sufficiently long time. After presenting some general properties of the multi-parameter system, we focus on an analysis of the clustering behavior of the random connectivity graph. In our main results we isolate regimes for the almost-sure absence of percolation if, for example, the device intensity is too small, or the connectivity time is too large. On the other hand, we exhibit parameter regimes of sufficiently large intensities of devices, under favorable choices of the other parameters, such that percolation is possible with positive probability. Most interestingly, we also show an in-and-out of percolation as the velocity increases. The rigorous analysis of the system mainly rests on comparison arguments with simplified models via spatial coarse graining and thinning approaches. Here we also make contact to geostatistical percolation models with infinite-range dependencies.