一种基于WiFi Direct技术的位置信息共享方法

当移动设备处于离线状态时，设备之间难以实现基于位置的信息共享。本文尝试利用Android设备搭载的WiFi Direct技术建立无线自组织网络的方法，实现了在该网络下位置信息的共享，并对该网络的性能进行了测试，同时考虑了设备中存在有设备与服务器连接时的信息共享情况。试验表明，该方法可在一定程度上解决因网络中断，设备之间不能进行位置等信息的共享或从服务器获取信息的问题。

A Method for Location-based Information Sharing Based on WiFi Direct

It is difficult for devices to share location-based information with each other,when they are off-line.A method that builds and tests wireless ad hoc networks for Android devices based on WiFi Direct is tried,by which we implement the location-based information sharing,as well as we take the situation in which some devices in the group have a connection to the server into consideration.The test shows that the method could be a solution to the problem that devices can't share location-based information with each other or request information from the server to some extent,which is caused by network interruption.