Positioning assistance data (PAD) may be partitioned into positioning System Information Blocks (posSIBs) and periodically broadcast by a base station. A posSIB or scheduling information for a posSIB may include a validity time and a validity tag that indicates whether the PAD for a posSIB has changed. A user equipment (UE) may receive a posSIB comprising PAD and the validity time and the validity tag for the posSIB. The UE may then wait until the validity time expires and/or the validity tag in the scheduling information indicates a change of PAD before receiving a new instance of the posSIB. The validity time and validity tag may both be included in the posSIB, in which case the UE may receive the posSIB and then look at the validity tag to determine whether to decode and process the PAD.

Three or more receivers installed in a UAV receive signals from a number of satellites, and generate, based on these received signals, observation data items including information items about distances from the satellites to the receivers. An information processing apparatus calculates, based on these observation data items and on position data items of the plurality of satellites, estimated reception positions at which one or more of the receivers are estimated to receive the signals from the satellites. The information processing apparatus calculates, based on these estimated reception positions and on an estimated posture of the UAV, estimated positions of a ranging apparatus in the UAV. The ranging apparatus measures a distance to a target by applying a laser beam to the target in synchronization with timings at which the receivers receives the signals from the satellites.

This problem has been addressed before, but the way of doing so is flawed and incomplete. Only larger objects can be tracked, neglecting items such as glasses, TV remotes, and headphones. Some also solely use Bluetooth tracking, which can be quick and precise, but is unreliable. Items lost far away from people with Bluetooth active their phone cannot be found using this method. This is not an option for most small, easily misplaced items.

Various embodiments of the device (in one case using the name SeekR) allow for tracking of all these difficult-to-keep-track-of items. The device's small size allows it to attach to all of these items that existing solutions cannot, e.g., on the frame of glasses, e.g., the bridge, temple and/or temple tips. The device also incorporates assisted global positioning system (AGPS), which is much more reliable than tracking devices that solely use Bluetooth technology, and, in many cases, using AGPS results in identifying the location of a lost item faster than using Bluetooth (or other short distance wireless communication systems). The AGPS system used in various embodiments combines trilateration and global positioning system (GPS) technology to determine a more accurate device location in less time than using GPS systems alone.

An example method includes obtaining, by a global navigation satellite system (GNSS) processor of a mobile computing device and based on signals received from GNSS satellites, a stream of I/Q samples; providing, by the GNSS processor and for another processor, the stream of I/Q samples; receiving, by the GNSS processor and from the other processor, aiding data that is determined based on the stream of I/Q samples, wherein the aiding data, that includes: a code phase, a frequency, and a time for a GNSS satellite of the GNSS satellites; and processing, by the GNSS processor and based on the aiding data, the stream of I/Q samples to determine a first fix for the mobile computing device.

Sets of digital samples associated with received wireless signals are received, each of the sets of digital samples corresponding to a particular RF path. The sets of digital samples are provided to a plurality of pipelines, each of the plurality of pipelines including a plurality of stages, each of the plurality of stages including one or more digital logic circuits. Sets of interconnect data are generated by the plurality of pipelines based on the sets of digital samples, the sets of interconnect data including at least one accumulating value. The sets of interconnect data are passed between adjacent pipelines of the plurality of pipelines along a direction. A result is generated by a last pipeline of the plurality of pipelines based on the at least one accumulating value.

Sets of digital samples associated with received wireless signals are received, each of the sets of digital samples corresponding to a particular RF path. The sets of digital samples are provided to a plurality of pipelines, each of the plurality of pipelines including a plurality of stages, each of the plurality of stages including one or more digital logic circuits. Sets of interconnect data are generated by the plurality of pipelines based on the sets of digital samples, the sets of interconnect data including at least one accumulating value. The sets of interconnect data are passed between adjacent pipelines of the plurality of pipelines along a direction. A result is generated by a last pipeline of the plurality of pipelines based on the at least one accumulating value.

A system for estimating a receiver position with high integrity can include a reference station observation monitor configured to: receive a set of reference station observations associated with a set of reference stations, detect a predetermined event, and mitigate an effect of the predetermined event; a modeling engine configured to generate corrections; a reliability engine configured to validate the corrections; an observation monitor configured to: receive a set of satellite observations from a set of global navigation satellites corresponding to at least one satellite constellation; detect a predetermined event; and mitigate an effect of the predetermined event; a carrier phase determination module configured to determine a carrier phase ambiguity of the set of satellite observations; and a position filter configured to estimate a position of the receiver.

Perception data based multipath identification and correction is based on recognition that sensors such as radar, LIDAR, and cameras can generate perception data indicative of locations and properties of terrestrial objects in an environment surrounding a satellite navigation device (e.g., a GNSS receiver), which data may then be used in training, or updating, a model for determining or correcting distances to satellites to account for multipath. Multipath identification includes identifying multipaths to train the model, e.g., by using perception data to perform ray tracing. Multipath correction includes using the model to correct distance errors due to the multipaths or, equivalently, using the model to determine distances to satellites in a manner that accounts for the multipaths.

A terminal device for use in a wireless telecommunications network, the terminal device comprising: first receiver circuitry configured to receive a first signal from each of one or more signal emitting devices located at respective spatial positions; transmitter circuitry configured to transmit a second signal to infrastructure equipment of the wireless telecommunications network; second receiver circuitry configured to receive a third signal from the infrastructure equipment, the third signal being transmitted by the infrastructure equipment in response to the infrastructure equipment receiving the second signal, the third signal being for determining, in combination with the first signal received from each of the one or more signal emitting devices, the spatial position of the terminal device, and the third signal being comprised within a predetermined system information block (SIB); and control circuitry configured to determine a spatial position of the terminal device based on the received first and third signals.

A system for estimating a receiver position with high integrity can include a reference station observation monitor configured to: receive a set of reference station observations associated with a set of reference stations, detect a predetermined event, and mitigate an effect of the predetermined event; a modeling engine configured to generate corrections; a reliability engine configured to validate the corrections; an observation monitor configured to: receive a set of satellite observations from a set of global navigation satellites corresponding to at least one satellite constellation; detect a predetermined event; and mitigate an effect of the predetermined event; a carrier phase determination module configured to determine a carrier phase ambiguity of the set of satellite observations; and a position filter configured to estimate a position of the receiver.