A method for requesting an on-demand positioning reference signal (PRS) is performed by a location management function (LMF) device. The method includes: receiving an on-demand PRS requesting message sent by a terminal, the on-demand PRS request message being used for requesting to acquire first PRS configuration information; and in response to determining that the LMF device is unable to provide the first PRS configuration information for the terminal, sending a response message to the terminal.

A wireless communication system having a time synchronization mechanism is provided. The wireless communication system comprises a first receiver and a second receiver. The first receiver tracks a code phase data of a satellite to generate a synchronization data related to a sync phase position and a first receiver phase position corresponding to one of first receiver time pulses. The second receiver comprises a receiving unit, a tracking unit and a computing unit. The receiving unit receives the synchronization data from the first receiver through a network. The tracking unit tracks the code phase data of the satellite to obtain a second receiver phase position corresponding to one of second receiver time pulses. The computing unit performs a time synchronization process with the first receiver and the satellite according to the code phase data, the synchronization data and the second receiver phase position.

The present disclosure relates to a collision avoidance concept comprising emitting a modulated light beacon from an object, wherein a luminance of the light beacon is modulated based on a useful signal carrying information on a position of the object, detecting, by an event-based vision sensor of a vehicle, the modulated light beacon of the object and outputting an event signal in response to a detected change in luminance of the modulated light beacon, and estimating a distance between the object and the vehicle based on the event signal.

Embodiments described herein provide for system and methods to crowdsource the location of wireless devices and accessories that lack a connection to a wide area network. One embodiment provides for a data processing system configured to perform operations comprising loading a user interface on an electronic device, the user interface to enable the determination of a location of a wireless accessory that is associated with the electronic device, generating a set of public keys included within a signal broadcast by the wireless accessory, the signal broadcast during a first period, sending the set of public keys to a server with a request to return data that corresponds with a public key in the set of public keys, decrypting the location data using a private key associated with the public key, and processing the location data to determine a probable location for the wireless accessory.

Embodiments described herein provide for system and methods to crowdsource the location of wireless devices and accessories that lack a connection to a wide area network. One embodiment provides for a data processing system configured to perform operations comprising loading a user interface on an electronic device, the user interface to enable the determination of a location of a wireless accessory that is associated with the electronic device, generating a set of public keys included within a signal broadcast by the wireless accessory, the signal broadcast during a first period, sending the set of public keys to a server with a request to return data that corresponds with a public key in the set of public keys, decrypting the location data using a private key associated with the public key, and processing the location data to determine a probable location for the wireless accessory.

Embodiments described herein provide for system and methods to crowdsource the location of wireless devices and accessories that lack a connection to a wide area network. One embodiment provides for a data processing system configured to perform operations comprising loading a user interface on an electronic device, the user interface to enable the determination of a location of a wireless accessory that is associated with the electronic device, generating a set of public keys included within a signal broadcast by the wireless accessory, the signal broadcast during a first period, sending the set of public keys to a server with a request to return data that corresponds with a public key in the set of public keys, decrypting the location data using a private key associated with the public key, and processing the location data to determine a probable location for the wireless accessory.

Embodiments described herein provide for system and methods to crowdsource the location of wireless devices and accessories that lack a connection to a wide area network. One embodiment provides for a data processing system configured to perform operations comprising loading a user interface on an electronic device, the user interface to enable the determination of a location of a wireless accessory that is associated with the electronic device, generating a set of public keys included within a signal broadcast by the wireless accessory, the signal broadcast during a first period, sending the set of public keys to a server with a request to return data that corresponds with a public key in the set of public keys, decrypting the location data using a private key associated with the public key, and processing the location data to determine a probable location for the wireless accessory.

A positioning method in a satellite network, a communication apparatus, a computer-readable storage medium, a program, and a program product are provided. The method includes: a terminal device receives a first broadcast signal block of a first satellite; obtains a measurement value of the first broadcast signal block; obtains positioning assistance information, from the first satellite, indicating a frequency and a polarization direction of the second satellite, where a frequency and/or a polarization direction of the first satellite are/is different from the frequency and the polarization direction of the second satellite; receives a second broadcast signal block of the second satellite based on the positioning assistance information; obtains a measurement value of the second broadcast signal block; and obtains location information of the terminal device based on the measurement value of the first broadcast signal block and the measurement value of the second broadcast signal block.

A method for a user equipment to transmit information for measurement of a positioning reference signal (PRS) in a wireless communication system according to an embodiment of the present disclosure, the method comprises receiving, from a location server, configuration information related to the PRS, receiving the PRS from a base station, and transmitting, to the location server, information for a measurement of the PRS. The configuration information includes information for an angle related to the PRS and the information for the angle related to the PRS includes i) a first value related to an expected angle and ii) a second value related to a range of the expected angle. A boundary value of the range of the expected angle is determined based on the first value and the second value.

A wireless device (12) is configured for radio access technology, RAT, dependent positioning in a wireless communication network (10). The wireless device (12) receives, from a network node (18), assistance data (20) that assists the wireless device (12) with RAT-dependent positioning, e.g., downlink Observed Time Difference of Arrival. The assistance data (20) may be based on device-specific information. The device-specific information may for example include a subscription associated with the wireless device (12). The wireless device (12) may perform the RAT-dependent positioning based on assistance from the assistance data (20).