论文标题
在空间分布的无线网络中广播和收集的年龄
Age of Broadcast and Collection in Spatially Distributed Wireless Networks
论文作者
论文摘要
我们考虑了一个无线网络，该网络在无线干扰的情况下，在空间分布的节点上和从空间分布的节点中收集时间敏感的数据。信息时代（AOI）是自从生成最多的数据包以来已经过去了的时间，并捕获了信息的新鲜度。在广播和收集的背景下，我们将广播的年龄（AOB）定义为所有节点都经过的时间，直到所有节点都收到新的更新，而收集年龄（AOC）是过去的时间，直到基站从所有节点收到更新为止。 我们在两种情况下量化了平均广播和收集年龄：1）实例依赖性，其中所有节点和干扰物的位置都是已知的，以及2）实例无关的，其中未知但随机位置，并且预期的年龄是相对于节点位置的。在独立的情况下，我们表明AOB和AOC量表相对于基站周围区域的半径超级指数。仿真结果突出了预期的AOB和AOC如何受网络参数（例如网络密度，中访问概率和覆盖区域的大小）的影响。
We consider a wireless network with a base station broadcasting and collecting time-sensitive data to and from spatially distributed nodes in the presence of wireless interference. The Age of Information (AoI) is the time that has elapsed since the most-recently delivered packet was generated, and captures the freshness of information. In the context of broadcast and collection, we define the Age of Broadcast (AoB) to be the amount of time elapsed until all nodes receive a fresh update, and the Age of Collection (AoC) as the amount of time that elapses until the base station receives an update from all nodes. We quantify the average broadcast and collection ages in two scenarios: 1) instance-dependent, in which the locations of all nodes and interferers are known, and 2) instance-independent, in which they are not known but are located randomly, and expected age is characterized with respect to node locations. In the instance-independent case, we show that AoB and AoC scale super-exponentially with respect to the radius of the region surrounding the base station. Simulation results highlight how expected AoB and AoC are affected by network parameters such as network density, medium access probability, and the size of the coverage region.
