Location system for wireless local area network (WLAN) using...

Details Location system for wireless local area network (WLAN) using... Location system for wireless local area network (WLAN) using...

2011-03-01

2011-03-01

Cho, Hong (Department: 2467)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S456100

Reexamination Certificate

active

07899006

ABSTRACT:
A wireless local area network includes a plurality of access point stations that receive and transmit communications signals within the wireless local area network. A first set of access point stations are WiFi compliant and measure signal strength and determine the received signal strength indication (RSSI). A second set of access point stations are operable in accordance with the time of arrival (TOA) real time location standard (RTLS). A dual mode mobile station is operative for multimode communication with both the WiFi and RTLS compliant access point stations. A location processor is operatively connected with each of the access point stations and processes the RSSI and creates a RSSI locate map and processes communication signals from the second set of access point stations and determines which signals are first-to-arrive signals to locate the mobile station and update the RSSI locate map and locate any non-dual mode WiFi devices.

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