Qualcomm Incorporated

Nicolas Graube

Paul Dominic Hiscock

Murray Robert Jarvis

Thomas Allan

Benjamin Tarlow

Mauro Scagnol

Mafalda Pereira Varela

Tingting Liu

Ashok Bhatia

Vishal Agarwal

Robin Heydon

Dirceu Cavendish

Robert Thomas Franzo

Ian Charles Blair

Arthur Miller

Clark Don Woolstenhulme

Simon Finch

Aline Coelho De Souza

Laksh Bhatia

Joe Thomas

Jeffery Mark Torrance

Rahul Sangwan

Deep Shikha Aggarwal

Sonu Lnu

Randhir Kumar

Robin Robin

Abhishek Prasad

Systems and techniques are provided for wireless communications. A Radio Frequency Identification (RFID) observation can be obtained based on an energizing signal and a plurality of backscatter signals from a plurality of RFID tags. Each backscatter signal can indicate an identifier of a respective RFID tag uniquely associated with a particular item of a plurality of items. Expected background noise information, indicative of a subset of the plurality of items for the RFID observation, can be determined based on comparing a location of a wireless communication device and item placement information for the plurality of items. The RFID observation can be filtered using the expected background noise information to exclude information associated with the subset of the plurality of items. A basket content estimation can be determined from the filtered RFID observation, wherein the basket content estimation is indicative of one or more collected items of the plurality of items.

Item tracking using radio frequency identification filtering

Various embodiments include methods for rotating a control node role among devices in a control cluster of a wireless mesh network. Methods may include assuming the control node role by a first device based on a control node assumption timing in a schedule, and transmitting periodic messages to support the wireless mesh network. Methods may further include using the schedule to identify a control node role end timing and a third device in the control cluster that will assume the control node role, transmitting the periodic messages while monitoring for an extended advertisement from the third device after the control node role end timing until the extended advertisement from the third device is received, and assuming a passive node role upon receiving the extended advertisement from the third device or continuing the control node role when no extended advertisement is received from the third device.

Role switching in a mesh network using periodic advertisement

In an aspect, an asset tracking coordination component estimates a time of a beacon transmission from a wireless energy charging-capable device coupled to an asset within a threshold proximity of a scanning device based on an estimated distance between the asset tracking coordination device and the scanning device and timing information associated with a wireless energy transmission, and schedules a beacon scanning window for the scanning device to scan for the beacon transmission based on the estimated time. In a further aspect, a scanning device may both provide a wireless energy transmission and may also scan for beacon transmission(s) from wireless energy charging-capable device(s) during a beacon scanning window.

Scanning for a beacon transmission from a wireless energy charging-capable device

Various embodiments may provide systems and methods for determining a distance to a short in a two-conductor wire. Various embodiments may include determining a distance to a short in a two-conductor wire based at least in part on a phase difference between a phase of an injected tone and a phase of a reflected tone. Various embodiments may include determining a distance to a short in a two-conductor wire based at least in part on both a phase difference and an amplitude difference between an injected tone and a reflected tone. Various embodiments may include determining a distance to a short in a two-conductor wire based at least in part on a measured peak voltage of a combined pulse.

Method for measuring distance to a short in a two-conductor wire

According to various aspects and techniques to enable methods and systems for a first communication device to determine an approximate number of other communication devices that have lost contact with a host communication device. This includes determining a common future time window using a last known global time stamp and determining a transmit time within the common future time window. This also includes receiving samples that are captured during the common future time window on a predefined communication channel, as well as analyzing the received samples to estimate the total number of other communication devices.

Electronic shelf label (ESL) efficient reconnect

Various embodiments provide systems and methods which disclose a device which may be used to determine an audio event based on receiving an audio signal. Based on the determined audio event, audio activity may be tracked. The tracked audio activity may be summarized based on a summary mode. Feedback of the summarized tracked audio activity may be based on a feedback mode.

Audio activity tracking and summaries

A method is described. The method includes associating an identity to a computing device based on a context measurement. The method also includes generating a network address for the computing device based on the associated identity. The context measurement may include a biometric measurement and the network address of the computing device may be a function of the biometric measurement.

Systems and methods for context-based device address generation

Disclosed are systems, devices and methods for determining a range estimate between two Bluetooth enabled devices based, at least in part, on round trip phase measurements of wireless signals transmitted between the devices. In one example, phase estimates between a single antenna of a first device and each element within the antenna array of a second device may be used to determine a residual range between the first device and the second device. In addition, an Angle of Arrival (AoA) may also be used to determine a two dimensional or three dimensional position of the second device.

Methods and apparatus for improved accuracy and positioning estimates

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive at least one signal from a second wireless device, the at least one signal including one or more of RTP information or inertial sensor information. The apparatus may determine at least one AoA measurement and at least one RTP measurement associated with the at least one signal received from the second wireless device. The apparatus may determine a path of trajectory of the second wireless device based at least in part on the at least one AoA measurement, the at least one RTP measurement, and the inertial sensor information.

Determining a path of trajectory of a wireless device

Disclosed are methods, devices, systems, apparatus, servers, media, and other implementations, including a method, performed at a first wireless device, for secure range determination that includes transmitting a first signed message at a first time instance, with the first signed message, including a first payload, configured to be received by a second wireless device at a second time instance, and receiving at a fourth time instance a verifiable acknowledgement message transmitted from the second wireless device at a third time instance in response to the first signed message. The method further includes verifying that the verifiable acknowledgement message originated from the second wireless device, and, responsive to a verification that the verifiable acknowledgement message originated from the second wireless device, transmitting a second signed message including a second payload with at least timing information for the first time instance and the fourth time instance.

Secure range determination protocol

Disclosed are systems, devices and methods for determining a range between devices based, at least in part, on measurements of wireless tone signals transmitted between devices. In particular, two devices may measure tone signals transmitted between the two devices for determination of a round-trip phase measurement. Obtaining multiple round-trip measurements from tone signals transmitted at different carrier frequencies may enable resolving at least some range ambiguities.

Growing community of inventors

Cambridge, United Kingdom

Nicolas Graube