Network-based wireless location
Network-based wireless location
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DOI：
10.1109/msp.2005.1458275
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发表时间：
2005-07-01
影响因子：
14.9
通讯作者：
Khajehnouri, N
中科院分区：
文献类型：
--
作者：
Sayed, AH;Tarighat, A;Khajehnouri, N
无线位置指的是蜂窝或无线局域网（WLAN）环境中移动的用户的地理坐标。响应于联邦通信委员会（FCC）在1996年发布的命令，无线定位已经作为蜂窝系统的基本公共安全特征出现。联邦通信委员会的任务旨在解决一个严重的公共安全问题，这一问题是由以下事实引起的：目前，所有911电话中有很大一部分来自移动的电话，其位置无法用现有技术确定。然而，无线环境固有的许多困难使得满足FCC目标具有挑战性。这些挑战包括信道衰落、低信噪比（SNR）、多用户干扰和多径条件。除了紧急服务，无线定位技术还有许多其他应用，包括出于安全原因的监视和跟踪、位置敏感计费、欺诈保护、资产跟踪、车队管理、智能交通系统、移动的黄页，甚至蜂窝系统设计和管理。本文概述了无线定位的挑战和技术，特别关注基于网络的技术和应用。
Wireless location refers to the geographic coordinates of a mobile subscriber in cellular or wireless local area network (WLAN) environments. Wireless location finding has emerged as an essential public safety feature of cellular systems in response to an order issued by the Federal Communications Commission (FCC) in 1996. The FCC mandate aims to solve a serious public safety problem caused by the fact that, at present, a large proportion of all 911 calls originate from mobile phones, the location of which cannot be determined with the existing technology. However, many difficulties intrinsic to the wireless environment make meeting the FCC objective challenging. These challenges include channel fading, low signal-to-noise ratios (SNRs), multiuser interference, and multipath conditions. In addition to emergency services, there are many other applications for wireless location technology, including monitoring and tracking for security reasons, location sensitive billing, fraud protection, asset tracking, fleet management, intelligent transportation systems, mobile yellow pages, and even cellular system design and management. This article provides an overview of wireless location challenges and techniques with a special focus on network-based technologies and applications.