IP3 2018-WLAN 1

This lot is generally related to wireless data communication. Techniques are disclosed to transmit multiple narrowband signals sequentially in time and at different center frequencies to improve time-of-arrival (ToA) accuracy and time/frequency offset wideband (TF-WB) allows data packets to be transmitted at fixed center frequencies to facilitate high-resolution ToA measurements using pre-existing wireless protocols. The technology may be implemented in Wireless LAN, Bluetooth, GSM/GPRS/EDGE, CDMA, etc.