System and method for measuring round trip time based on wireless local area network
AssigneeElectronics and Telecommunications Research Institute
InventorDong Kyoo KIM
Life of this patent
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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.
Claims18
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.
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:
- 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.
Dependencies are inferred from the claim text.