Kabushiki Kaisha Toshiba

Michael Baddeley

Usman Raza

Yichao Jin

Aleksandar Stanoev

Xinyu Ni

Charles Lockie

A method for locating devices that transmit, backscatter or receive a wireless signal. The method comprising using each of one or more backscatter devices to modulate and backscatter a carrier signal transmitted by a transmitter. Modulating and backscattering the carrier signal generates a backscattered modulated signal comprising a sideband. The method further comprises receiving the one or more backscattered modulated signals with a receiver. At least one of the phase or amplitude of each sideband are used to determine at least one of: the distance between the transmitter and the backscatter device by which that sideband was generated, the distance between the receiver and the backscatter device by which that sideband was generated, and the sum thereof.

Backscatter location tracking system and method

A method of transmitting a data payload from one or more network nodes. The method includes transmitting a first data packet from a network node of the one or more network nodes and subsequently transmitting a second data packet from the network node of the one or more network nodes. The first data packet includes a set of blocks arranged in a first order and the second data packet including the set of blocks arranged in a second order that is different from the first order. Each block of the set of blocks includes a different section of the data payload and the sections of the data payload included by blocks of the set of blocks together define the entire data payload.

Methods and systems for transmitting data payloads

Method for transmitting data from a plurality of child nodes to a parent node in a wireless network, wherein each child node is configured to send messages directed to a root node of the network via the parent node, the method comprising the parent node: dividing a first time period into a plurality of timeslots; assigning a MAC protocol to one or more child node for transmission of data to the parent node during the first time period; allocating one or more of said plurality of timeslots into which the first period is divided to said one or more child nodes for transmission to the parent node according to the MAC protocol assigned to them; transmitting details of the respective assigned MAC protocol and allocated timeslot to said one or more child nodes.

SDMM: a method for adaptive scheduling of MAC protocols in a mesh network based on local network state information

Carrier frequency offset (CFO) estimation is effected by transmission of contemporaneous bit patterns, detectable by a receiver. By analysis of periodicity of bit error occurrences at the receiver, a beating period caused by interference between the two transmitters can be identified. From this beating period, a measure of CFO can be obtained.

Carrier frequency offset estimation and elimination

The present subject-matter provide a controller for a low-power, wireless, software defined networking, SDN, architecture. The controller comprises a processor and a memory storing instructions for execution by the processor. The instructions, when executed by the processor cause the controller to implement: a control layer arranged to detect a communication type for processing an application over the network, and translate the communication type into a plurality of phases chosen from a pre-defined set of phases to configure the nodes of the network to respond to the application according to the communication type.

Growing community of inventors

Bristol, United Kingdom

Michael Baddeley