在一个按照东西和南北方向划分成规整街区的城市里，n个居民点散乱地分布在不同的街区中。用x坐标表示东西向，用y表示南北向。各居民点的位置可以由坐标（x，y）表示。街区中任意两点（x1，y1）和（x2，y2）之间的距离可以用数值|x1-x2|+|y1-y2|度量。-In a north-south direction in accordance with things and is divided into regular city blocks, n a settlements scattered

In recent years, the location-based services have increased, because users have gotten more and more on the availability and accuracy of the location of interest

Location-Aware Communications for 5G Networks used in 5G we can use it to develop our own source code.

A site-to-site VPN allows offices in multiple fixed locations to establish secure connections with each other over a public network such as the Internet. Site-to-site VPN extends the company s network, making computer resources one location available