Method and system for employing a dedicated device for position estimation by a WLAN positioning system
First Claim
1. A device for estimating the position of itself in response to gathering wireless signal information from WLAN access points (APs), said device comprising:
- a receive-only WLAN radio receiver configured only for receiving WLAN signals transmitted by WLAN APs in range of said device;
extraction logic for extracting only header information from said received WLAN signals to identify the WLAN APs; and
logic to cooperate with a WLAN-based positioning system to estimate the position of the device based at least in part on the extracted header information identifying the WLAN APs in the range of said device;
wherein said device does not comprise a transmitter for transmitting WLAN signals and is incapable of transmitting WLAN signals;
wherein the receive-only WLAN radio receiver is configured to be enabled only to receive the WLAN signals transmitted by WLAN APs in range of the device and is configured to be disabled to minimize power consumption otherwise.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems of employing a dedicated device for position estimation by a WLAN-based positioning system. A device estimates the position of itself in response to gathering wireless signal information from WLAN access points (APs). The device includes a receive-only WLAN radio module for receiving WLAN signals transmitted by WLAN APs in range of said device, extraction logic for extracting information from said received WLAN signals to identify the WLAN APs; and logic to cooperate with a WLAN-based positioning system to estimate the position of the device based at least in part on the extracted information identifying the WLAN APs in the range of said device. In other embodiments, the radio module includes a transmitter but one which is only capable of transmitting probe requests.
149 Citations
18 Claims
-
1. A device for estimating the position of itself in response to gathering wireless signal information from WLAN access points (APs), said device comprising:
-
a receive-only WLAN radio receiver configured only for receiving WLAN signals transmitted by WLAN APs in range of said device; extraction logic for extracting only header information from said received WLAN signals to identify the WLAN APs; and logic to cooperate with a WLAN-based positioning system to estimate the position of the device based at least in part on the extracted header information identifying the WLAN APs in the range of said device; wherein said device does not comprise a transmitter for transmitting WLAN signals and is incapable of transmitting WLAN signals; wherein the receive-only WLAN radio receiver is configured to be enabled only to receive the WLAN signals transmitted by WLAN APs in range of the device and is configured to be disabled to minimize power consumption otherwise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification