Abstract: With the popularity of mobile terminals and the development of location-based services, mobile location technology has been widely applied in mobile Internet. However, it brings security risks such as user privacy leakage when we enjoy the convenience. This paper introduces several important mobile location technologies such as satellite positioning technology, base station location technology and third party services positioning technology and also their characteristics, and analyzes the main problems and related research work of location privacy protection for mobile terminals. We propose several privacy preserving technologies and methods for mobile terminals. Finally, an improved model is proposed according to the location privacy protection method of current location service.

Key words: mobile terminal, positioning technology, Location-Based Services, privacy protection, location privacy preserving

摘要： 随着移动终端的普及和基于位置服务（Location-Based Services）的发展，移动定位技术在移动互联网中得到了广泛应用。然而该技术在带给人们便利的同时也带来了诸如用户隐私泄露的安全性风险。本文介绍了几种重要的移动定位技术，包括卫星定位技术、基站定位技术、第三方服务定位技术以及它们各自的特点，分析了移动终端位置隐私保护面临的主要问题与相关研究工作，提出了几种移动终端位置隐私保护技术与方法，最后根据当 前定位服务的位置隐私保护方法提出了改进模型。

关键词: 移动终端, 定位技术, 基于位置服务, 隐私保护, 位置隐私