位置與移動性密不可分。無論在室內還是室外，消費者都想知道他們在哪裡，周圍有哪些東西。Wi-Fi CERTIFIED Location™在室內提供達到米級的準確度。憑藉Wi-Fi連接的優勢，無需單獨的定位基礎設施或費用高昂的維護，支援Wi-Fi Location的網路和設備就可聯手提供準確的定位資訊。
支援Wi-Fi Location的設備説明網路系統管理員、作業系統開發人員和應用開發人員提供先進的、以定位資料為主導的應用和服務。Wi-Fi Location認證確保基於標準的設備互通性，以便開發人員能夠為用戶提供與室外相同的室內體驗。
Wi-Fi Location不僅提高了導航定位資料的準確度，還為開發新的、功能豐富的應用和服務創造了條件。通過以下應用和服務，Wi-Fi Location可以使製造商、企業、零售和醫療保健市場受益：
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- 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. Using the FTM Range Request and Report, an infrastructure (network) device requests a mobile device to measure and report range measurements between the mobile device and nearby access points (AP). The ranges are determined using FTM frame exchanges during an FTM session.
- 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.