电话是否需要连接到互联网，以便网络提供商可以确定位置? [英] Does the phone need to be connected to the internet so that the network provider can determine a location?

问题描述

电话是否需要一直连接到互联网，以便网络提供商可以确定位置?

Does the phone need to be connected to the internet all the time, so that the network provider can determine a location?

当我在手机上测试我的应用程序时，并且在Settings->Location中仅选中了Use wireless network，并且我没有通过Wi-Fi连接到互联网，因此无法获得位置信息.

When I test my app on my phone, and in Settings->Location only Use wireless network is checked, and I am not connected to the internet via Wi-Fi, I can not get a location fix.

我知道网络提供商使用蜂窝塔的可用性，但是我不知道它是如何工作的，我是否应该拥有完整的Internet访问权限.

I know there was something that the network provider uses availability of cell tower, but I don't know how that works exactly and should I have full internet access.

请有人对我说清楚.

推荐答案

是的，您需要连接到Internet才能获得正确的网络位置修复程序.至少在大多数时候.

Yes, you need to be connected to the Internet in order to get correct network location fixes. At least most of the time.

电话会收集以下数据(它确实不需要需要连接到互联网)

The phone collects the following data (it does not need a connection to the Internet to do this):

通过扫描wifi接入点
• 附近的wifi信息
• 可从手机的蜂窝无线电中获取附近的移动小区信息

• nearby wifi information by scanning for wifi access points
• nearby mobile cell information is available from the phone's cellular radio

然后电话将这些数据发送到服务器.服务器使用此数据在其数据库中查找以确定手机最可能的位置.服务器将位置信息发送回电话.这一切都是通过Internet(移动Internet或wifi)通过数据连接完成的.

The phone then sends this data to a server. The server uses this data to look in its database to determine the phone's most likely position. The server sends the location information back to the phone. This is all done using data connection via Internet (either mobile Internet or wifi).

某些实现还额外将少量服务器的数据库下载到电话中(在电话当前位置周围描述一小块区域)，这样电话就不必一直查询Internet. 但是，一旦手机移出该小区域，它将需要访问Internet才能再次获得正确的位置.

Some implementations additionally download a small amount of the server's database to the phone (describing a small area around the phone's current position) so that the phone doesn't have to query the Internet all the time. However, once the phone has moved outside of this small area it will need to access the Internet to get correct locations again.

因此，基本上，没有Internet连接，您就不能(可靠地)使用网络位置.

So, basically, without Internet connectivity you can't (reliably) use network location.

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