SYSTEM AND METHOD FOR MEASURING ROUND TRIP TIME BASED ON WIRELESS LOCAL AREA NETWORK
First Claim
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1. A system for measuring a round trip time (RTT) based on a wireless local area network (WLAN), the system comprising:
- first and second signal time measuring devices respectively connected to two WLAN devices that perform WLAN communication and each measuring a signal time difference between a transmitted signal from each one of the two WLAN devices and a corresponding received signal at the other; and
a RTT estimator for estimating a RTT using the measured signal time differences of the first and the second signal-time measuring devices.
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Abstract
A RTT measurement system includes first and second signal time measuring devices respectively connected to two wireless LAN devices and a RTT estimator. Each one of the first and second signal time measuring devices senses a transmitted signal from a corresponding WLAN device and a corresponding received signal and measures a signal time difference between the transmitted signal and the received signal. The RTT estimator estimates a RTT using the measured signal time differences at the first and second signal time measuring devices.
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Citations
18 Claims
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1. A system for measuring a round trip time (RTT) based on a wireless local area network (WLAN), the system comprising:
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first and second signal time measuring devices respectively connected to two WLAN devices that perform WLAN communication and each measuring a signal time difference between a transmitted signal from each one of the two WLAN devices and a corresponding received signal at the other; and a RTT estimator for estimating a RTT using the measured signal time differences of the first and the second signal-time measuring devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for estimating a round trip time (RTT) using signals transmitted/received between two wireless local area network (WLAN) devices in a RTT measurement system, the method comprising:
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receiving a transmitted signal of one of the two WLAN devices and a corresponding received signal at each of first and second signal time measuring devices respectively connected to the two WLAN devices; measuring a signal time difference of the transmitted signal and the received signal at each one of the first and second signal time measuring devices; and estimating a RTT using the measured signal time differences of the first and second signal time measuring devices. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification