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Wi-Fi Location

凭借Wi-Fi®连接实现准确的室内定位

位置与移动性密不可分。无论在室内还是室外，消费者都想知道他们在哪里，周围有哪些东西。Wi-Fi CERTIFIED Location™在室内提供达到米级的准确度。凭借Wi-Fi连接的优势，无需单独的定位基础设施或费用高昂的维护，支持Wi-Fi Location的网络和设备就可联手提供准确的定位信息。

支持Wi-Fi Location的设备帮助网络管理员、操作系统开发人员和应用开发人员提供先进的、以定位数据为主导的应用和服务。Wi-Fi Location认证确保基于标准的设备互操作性，以便开发人员能够为用户提供与室外相同的室内体验。

导航以外的定位应用

Wi-Fi Location允许自我定位的接入点建立准确的室内位置，并使6GHz标准功率的应用可用。通过使用FTM范围请求和报告，客户设备可以在不分享任何信息的情况下确定其相对于传播接入点的位置，从而在不损害隐私的情况下提供极大的准确性。Wi-Fi Location不仅提高了导航定位数据的准确度，还为开发新的、功能丰富的应用和服务创造了条件。Wi-Fi 无处不在，无需额外设备即可轻松利用现有网络基础设施来实现准确的室内定位。Wi-Fi Location可以通过以下应用和服务，造福工业、企业、零售和医疗保健市场:

  • 室内导航：Wi-Fi Location精确到一米以内，并提供每秒数次的更新；
  • 资产管理：跟踪高价值移动设备；
  • 网络管理：准确定位哪里需要排故和维护；
  • 地理围栏：建立虚拟边界，当设备进出边界时，触发行动；
  • 自我定位的接入点：Wi-Fi Location允许自我定位的接入点建立准确的室内位置，并使6GHZ标准功率的应用可用。
  • 紧急服务：Wi-Fi Location能够运用公民地址及楼层号码进行定位，有可能帮助缩减应急服务响应时间。
Wi-Fi Alliance News See All
Wi-Fi CERTIFIED Location™ capabilities demonstrated at Lisbon member event
Wi-Fi® 提供了显著的物联网优势
Wi-Fi Location™: Performance drivers for Wi-Fi® ranging technologies and its achievable accuracies
The Signal Podcast
Episode 24: Looking toward the future of Wi-Fi Location™ with Rolf de Vegt of Qualcomm
Episode 22: Optimizing retail conversion and sustainability through Wi-Fi Location™ with Staffan Liljestrand of Bumbee Labs
Additional Resources
Frequently Asked Questions
  • How does Wi-Fi Location identify a device location?

    Wi-Fi Location primarily uses ranging through the Fine Timing Measurement (FTM) protocol to locate a device within a network. A mobile device can use the FTM Range Request and Report to determine its distance from an infrastructure device such as an access point (AP). This allows the mobile device to locate itself on a floorplan map or in global coordinates.

  • Does my phone have to be associated with an access point on a network to determine location?

    With Wi-Fi Location, a mobile device does not need a layer 2 or layer 3 connection with an access point (AP) to determine its location. Fine Timing Measurement (FTM) frames can be transmitted in pre-association mode once an FTM session is negotiated between a mobile device and an AP.

  • Must both client and network devices be Wi-Fi Location enabled for Wi-Fi Location to work?

    To gain the level of accuracy that Wi-Fi Location delivers, both devices in a measurement exchange should be certified for Wi-Fi Location.

  • How many infrastructure devices are needed to accurately determine a device’s relative location?

    A device usually makes use of trilateration to determine its relative location. In most cases three devices are sufficient for calculating location unless the placement of access points (AP) are aligned or are co-located.

  • Is Wi-Fi Location power efficient?

    Wi-Fi Location helps mobile devices conserve power by allowing a device to negotiate the scheduling and operational parameters for a Fine Timing Measurement (FTM) session, including the FTM burst interval, frequency and bandwidth of these transmissions, and number of frames in every burst.

Wi-Fi Alliance Member Publications
Qualcomm Wi-Fi Ranging: Delivering ranging and location technologies of tomorrow today
Qualcomm Technologies, Inc.

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