LTE Location Based Services Technology Introduction
LTE Location Based Services Technology Introduction
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发表时间：
2013
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通讯作者：
J. .. S. C. H. T. z;Rohde Schwarz;KG GmbHCo.;Mühldorfstraße;München
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作者：
J. .. S. C. H. T. z;Rohde Schwarz;KG GmbHCo.;Mühldorfstraße;München
LTE 基于位置的服务 (LBS) 涉及确定设备所在位置的过程。基于全球导航卫星系统 (GNSS) 的解决方案精度很高，是实现绝对定位精度的首选技术，只要设备具有良好的视线，但情况并非总是如此。设备可以处于卫星可见度较低的高度密集的城市环境中，也可以处于信号水平非常低的室内。 GNSS 系统的这些限制意味着基于 LTE 蜂窝的替代方案已经在 3GPP 第 9 版及更高版本中开发出来。本白皮书对此进行了描述。
LTE Location Based Services (LBS) involve the process of determining where a device is located. Global Navigation Satellite System (GNSS) based solutions are highly accurate and the technology of choice for absolute position accuracy, providing the device has a good line-of-sight, but this is not always the case. A device can be in a highly dense urban environment with reduced satellite visibility or indoors with very low signal levels. These limitations of GNSS systems have meant that LTE cellular based alternatives have been developed within 3GPP Release 9 and onwards. They are described in this white paper.