A system provides a way to determine angle of bearing to a target receiver/transmitter relative to plural beacon stations with rotating directional radiation patterns. The target is “cooperative” in that it transmits a “report” message when the target receives maximum signal strength from a beacon station. Triangulation from multiple beacon transmitter sites can be used to determine the target's position.

A system provides a way to determine angle of bearing to a target receiver/transmitter relative to plural beacon stations with rotating directional radiation patterns. The target is “cooperative” in that it transmits a “report” message when the target receives maximum signal strength from a beacon station. Triangulation from multiple beacon transmitter sites can be used to determine the target's position.

A system for detecting angle-of-arrival (AoA) includes a first device and at least one second device. The first device transmits a Bluetooth (BT) packet, and the second device receives the BT packet and determines an AoA of the BT packet. The second device includes a first radio-frequency (RF) antenna to receive a first RF signal and a second RF antenna to receive a second RF signal. The second device also includes a first BT core and a second BT-core and a processing circuit. The first BT core is coupled to the first RF antenna and is used to generate a first signal based on the first RF signal. The second BT core is coupled to the second RF antenna and generates a second signal based on the second RF signal. The processing circuit measures a phase difference between the first signal and the second signal and determines the AoA based on the phase difference.

A system for detecting angle-of-arrival (AoA) includes a first device and at least one second device. The first device transmits a Bluetooth (BT) packet, and the second device receives the BT packet and determines an AoA of the BT packet. The second device includes a first radio-frequency (RF) antenna to receive a first RF signal and a second RF antenna to receive a second RF signal. The second device also includes a first BT core and a second BT-core and a processing circuit. The first BT core is coupled to the first RF antenna and is used to generate a first signal based on the first RF signal. The second BT core is coupled to the second RF antenna and generates a second signal based on the second RF signal. The processing circuit measures a phase difference between the first signal and the second signal and determines the AoA based on the phase difference.

A positioning system according to an aspect of the present invention includes a wireless base station device that communicates with a wireless terminal; one or more relay devices that relay a signal between the wireless terminal and the wireless base station device; and a positioning device that estimates a position of the wireless terminal on the basis of a first signal received by the wireless base station device from the wireless terminal via a first relay device, which is one of the one or more relay devices, a position of the one or more relay devices, and a position of the wireless base station device.

There is provided mechanisms for position determination of a wireless device. A method is performed by a network node. The method comprises estimating a respective angle-of-arrival value for each of at least three ID antenna arrays from measured phase differences between antenna elements per ID antenna array for a signal communicated between the wireless device and the at least three ID antenna arrays. The antenna elements of each ID antenna array are arranged along a respective line. At least two of the lines are non-coincident with respect to each other. The method comprises determining the position of the wireless device by combining the angle-of-arrival values from the at least three ID antenna arrays.

There is provided mechanisms for position determination of a wireless device. A method is performed by a network node. The method comprises estimating a respective angle-of-arrival value for each of at least three ID antenna arrays from measured phase differences between antenna elements per ID antenna array for a signal communicated between the wireless device and the at least three ID antenna arrays. The antenna elements of each ID antenna array are arranged along a respective line. At least two of the lines are non-coincident with respect to each other. The method comprises determining the position of the wireless device by combining the angle-of-arrival values from the at least three ID antenna arrays.

A dual band radio frequency signal acquisition and source location system, provided with a steerable phased array antenna operable in a first and a second radio frequency band. A digital signal processor electrically connected to the steerable phased array antenna is configured to control steering of an antenna beam of the steerable phased array antenna and apply frequency time division multiplexing to radio frequency signaling in the first and the second radio frequency bands. In particular, the first frequency band may be 2.4 GHz Bluetooth/Bluetooth Low Energy, and the second frequency band may be 900 MHz passive UHF RFID.

A dual band radio frequency signal acquisition and source location system, provided with a steerable phased array antenna operable in a first and a second radio frequency band. A digital signal processor electrically connected to the steerable phased array antenna is configured to control steering of an antenna beam of the steerable phased array antenna and apply frequency time division multiplexing to radio frequency signaling in the first and the second radio frequency bands. In particular, the first frequency band may be 2.4 GHz Bluetooth/Bluetooth Low Energy, and the second frequency band may be 900 MHz passive UHF RFID.

Techniques for enabling a cross-link interference (CLI) based uplink (UL) angle-of-arrival (AoA) estimations are disclosed. A victim user equipment (UE) may be configured with CLI resources to measure CLIs from one or more aggressor UEs. The victim UE may take the CLI opportunities also to estimate the AoAs of the UL signals from the aggressor UEs. In this way, UE's location estimation may be enhanced.