Embodiments of the present disclosure disclose a positioning information transmission method, a related device, and a system. The positioning information transmission method includes: determining an uplink subframe for carrying an uplink signal and a downlink subframe for carrying a downlink signal; determining first measurement information and second measurement information; and sending the first measurement information and the second measurement information to a positioning server, for locating a terminal device by the positioning server. Positioning accuracy can be improved by using the embodiments of the present disclosure.

A mobile station (MS), a base station subsystem (BSS), and various methods are described herein that enable a positioning node (e.g., Serving Mobile Location Center (SMLC)) to improve the accuracy of estimating a position of the mobile station.

Various embodiments determine a position of a wireless device and enable the wireless device to retrieve the determined location. In one embodiment, a system comprises of at least one wireless transmitting device, a plurality of wireless receivers, and at least one server. Each of the plurality of wireless devices receive signals from the wireless transmitting device with unknown position and send time stamped information to the server. Each of the plurality of wireless device also sends unique identifying information about the wireless transmitting device. The server calculates a position of the wireless transmitting device by considering the inputs received from the plurality of wireless receivers. The wireless device obtains its position from the server. The process can be executed on demand or at regular frequent intervals.

An interference detection system in a network determines that an unknown radio frequency (RF) interference source that causes RF interference experienced by a first wireless station is a persistent RF interference source over a plurality of time intervals in a selected time period. A predicted interference source location is identified for each time interval in the selected time period. An aggregated predicted interference source location is calculated based on the identified one or more predicted interference source locations.

The invention relates to an indoor localization system for a wireless communication network. The system comprises: one or more anchor devices, a central entity, and one or more tag devices. Transmission of signals by the one or more tag devices is controlled so that one signal is transmitted at a time on given radio resource, wherein the tag device transmitting said one signal is the tag device being localized. At least one anchor device is configured to: receive, the signal transmitted by the tag device being localized; determine an estimate of a direction of arrival (DOA) based on the received signal by applying a first power method-based algorithm and a second power method-based algorithm respectively and send the estimated DOA together with DOA metadata to the central entity. The invention relates also to indoor localization methods, an anchor device, a computer program, and a computer readable medium.

A method for positioning in a wireless communication system is described. The method comprises receiving, by a second node (102), a capability-request signal from a first node (106). The second node (102) transmits a capability-response signal to the first node (106). The second node (102) transmits an assistance information to the first node (106). The second node (102) transmits the configuration of the at least one reference signal to a third node (104). The second node (102) receives a reference signal from the third node (104). The second node (102) performs measurement on the reference signal and transmits report comprising the measurement to the first node (106), where the first node (106) estimates a position of the third node (104) based on the report received from the second node (102).

A method performed by a wireless node is disclosed, for enabling positioning of a wireless device, WD. The method comprises receiving, from a location network node, assistance information comprising an estimated range of angles to be used for a positioning method of the WD. The method comprises performing a positioning method for the WD based on the assistance information.

A beacon detection system which can locate a missing search subject includes: a beacon signal receiver; a location position detector; and a beacon detector. The detector is configured to detect a location of a broadcasting beacon signal associated with a personal device of a search subject within search data covering a geographic search area derived from a search for the search subject, the search data gathered by the beacon signal receiver and location position detector. A computer implemented method of determining a location of a search subject is also provided. The method determines at least a possible connection request from Wi-Fi signals in search data gathered by a Wi-Fi radio covering a geographic search area for a search subject and associated location information to locate the search subject.

The present disclosure relates to a location determination system that includes acoustic transmitting devices, location tags, and a wireless mesh network, where the wireless mesh network uses battery-powered devices. A location tag receives acoustic signals (e.g., ultrasound signals) from an acoustic transmitting device. Clocks from members of the wireless mesh network are synchronized by observation of clock pairings, each clock pair formed by respective clocks in a transmitting device that transmits a message and a receiving device that receives the message. By analyzing the observed clock pairings, a best fit between the clock pairings may be determined. After selecting a reference clock, an acoustic transmission schedule may be propagated to the respective acoustic transmitting device.

A beacon detection system which can locate a missing search subject includes: a beacon signal receiver; a location position detector; and a beacon detector. The detector is configured to detect a location of a broadcasting beacon signal associated with a personal device of a search subject within search data covering a geographic search area derived from a search for the search subject, the search data gathered by the beacon signal receiver and location position detector. A computer implemented method of determining a location of a search subject is also provided. The method determines at least a possible connection request from Wi-Fi signals in search data gathered by a Wi-Fi radio covering a geographic search area for a search subject and associated location information to locate the search subject.