The invention discloses an ultra-wideband (UWB) positioning system, UWB base stations (BSs), UWB tags and the operation methods thereof. Because the present invention uses a server aware of the positions of all BSs to determine the BSs that performs distance measurement, and the server assigns different time slots to each BS that performs distance measurement, the present invention can avoid collisions between the BSs in the process of distance measurement. Furthermore, because the tag can select a specific time slot to access the UWB positioning system by monitoring the UWB signals in the air, the present invention can reduce collisions between the tags. By carefully planning the system frames and subframes of the time division multiplexing system, and sophisticatedly arranging the operation timings of the BSs and the tags, the present invention provides practical and stable UWB positioning system, BSs, and tags.

Attendance for an event is provided. Wireless sensors are utilized to determine locations over a period of time of wireless devices of attendees of an event. Event materials are provided to the wireless devices using the wireless sensors. Attendance of the attendees at the event is indicated based on the locations over time of the wireless devices of the attendees of the event.

Attendance for an event is provided. Wireless sensors are utilized to determine locations over a period of time of wireless devices of attendees of an event. Event materials are provided to the wireless devices using the wireless sensors. Attendance of the attendees at the event is indicated based on the locations over time of the wireless devices of the attendees of the event.

A method includes forming a communication channel between a user device and an access device. The communication channel is then secured using a user device key pair in the user device and an access device ephemeral key pair in the access device. The access device then generates a session key using at least a private cryptographic key in the access device ephemeral key pair, and a public key in the user device key pair. The access device then uses the session key to secure an ultra-wideband communication channel between the user device and the access device.

A method includes forming a communication channel between a user device and an access device. The communication channel is then secured using a user device key pair in the user device and an access device ephemeral key pair in the access device. The access device then generates a session key using at least a private cryptographic key in the access device ephemeral key pair, and a public key in the user device key pair. The access device then uses the session key to secure an ultra-wideband communication channel between the user device and the access device.

Example embodiments include an electronic device and a method for operating an electronic device. The electronic device includes an ultra-wide band (UWB) antenna including directional antennas disposed on a rear surface of the electronic device and at least one omnidirectional antenna. The electronic device further includes a communication circuit configured to transmit and/or receive radio frequency (RF) signals of a frequency band designated to be used for UWB communication, through the UWB antenna, with an external electronic device. The electronic device further includes a processor configured to calculate a first distance value and a second distance value, and to determine, based on a distance difference between the first distance value and the second distance value, whether the external electronic device exists within a field of view (FoV) indicating a specified angular range with respect to the direction to which the rear surface faces.

Example embodiments include an electronic device and a method for operating an electronic device. The electronic device includes an ultra-wide band (UWB) antenna including directional antennas disposed on a rear surface of the electronic device and at least one omnidirectional antenna. The electronic device further includes a communication circuit configured to transmit and/or receive radio frequency (RF) signals of a frequency band designated to be used for UWB communication, through the UWB antenna, with an external electronic device. The electronic device further includes a processor configured to calculate a first distance value and a second distance value, and to determine, based on a distance difference between the first distance value and the second distance value, whether the external electronic device exists within a field of view (FoV) indicating a specified angular range with respect to the direction to which the rear surface faces.

An electronic device is provided. The electronic device includes a communication module configured to support ultra wideband (UWB) communication, and at least one processor operatively connected to the communication module, wherein the at least one processor is configured to control to transmit, to an external electronic device, a first packet including first information related to transmission of a second packet through the communication module in a slot corresponding to a transmission time of the first packet, to transmit, to the external electronic device, at least one or more second packets corresponding to the first information through the communication module in a slot corresponding to a transmission time of the second packet, wherein the first packet may be an STS packet configuration (SP) frame including a payload, and the at least one or more second packets for determining whether pointing may be an SP frame that does not include a frame payload.

An electronic device is provided. The electronic device includes a communication module configured to support ultra wideband (UWB) communication, and at least one processor operatively connected to the communication module, wherein the at least one processor is configured to control to transmit, to an external electronic device, a first packet including first information related to transmission of a second packet through the communication module in a slot corresponding to a transmission time of the first packet, to transmit, to the external electronic device, at least one or more second packets corresponding to the first information through the communication module in a slot corresponding to a transmission time of the second packet, wherein the first packet may be an STS packet configuration (SP) frame including a payload, and the at least one or more second packets for determining whether pointing may be an SP frame that does not include a frame payload.

The invention discloses an ultra-wideband (UWB) positioning system, UWB base stations (BSs), UWB tags and the operation methods thereof. Because the present invention uses a server aware of the positions of all BSs to determine the BSs that performs distance measurement, and the server assigns different time slots to each BS that performs distance measurement, the present invention can avoid collisions between the BSs in the process of distance measurement. Furthermore, because the tag can select a specific time slot to access the UWB positioning system by monitoring the UWB signals in the air, the present invention can reduce collisions between the tags. By carefully planning the system frames and subframes of the time division multiplexing system, and sophisticatedly arranging the operation timings of the BSs and the tags, the present invention provides practical and stable UWB positioning system, BSs, and tags.