Texas Instruments Corporation

Ariton E Xhafa

Ramanuja Vedantham

Xiaolin Lu

Yanjun Sun

Jianwei Zhou

Arvind Kandhalu Raghu

Minghua Fu

Soon-Hyeok Choi

Josef Peery

Anuj Batra

Deric Wayne Waters

Alper Sinan Akyurek

Alexis Justine Burnight

Srinath Hosur

Leonardo William Estevez

Bradford James Campbell

Il Han Kim

Jesus Daniel Torres Bardales

Shantanu Kangude

Archanaa Santhana Krishnan

Gang Xu

Robert W Liang

Susan Yim

Assaf Sella

Bhadra Sandeep

Mathew Giaramita

Timothy M Schmidl

Jin-Meng Ho

Kaichien Tsai

Harshal Shantanu Chhaya

Naveen Kumar Kala

Tariq Muhanna

Vishal Coelho

Pierre Bertrand

Kumaran Vijayasankar

Jonathan William Nafziger

Chao-Fang Shih

Ryan Nuzzaci

Janwei Zhou

Arvind Khandalu Raghu

Torbjørn Sørby

Mario Mlynek

Baher S Haroun

Jaiganesh Balakrishnan

Tarkesh Pande

Mohamed Farouk Mansour

Michael Glik

Sthanunathan Ramakrishnan

Gangadhar Burra

Jing-Fei Ren

Shu Du

Kyl Wayne Scott

Jyothsna Kunduru

Henry Stephen Eilts

Saket Thukral

Taraka Rama Chandra Reddy Kambham

Karl-Heinz Steinmetz

Tahar Allag

Ram Machness

Arvind Kandhalu

Sandeep Kasargod

Ariela Blumer

Manish Airy

Tomas Urban

Hans-Georg Christian Haeck

Caleb Jackson Overbay

Timothy Mark Schmidl

Ramanuja E Vedantham

A method for channel switching by a secondary node. The method includes: receiving, from a primary node, a downlink transmission, measuring one or more statistics about the downlink transmission, determining, from the downlink transmission, an uplink interval, transmitting, to the primary node during the uplink interval, the measured one or more statistics about the downlink transmission, receiving, from the primary node, an indication of a set of useable channels, determining, based on the set of useable channels and at least one of the primary node or the secondary node, a next channel from the set of useable channels, and switching to the next channel based on a switch indication from the primary node.

Adaptive frequency hopping in a communication network

A method for managing Internet Protocol Version 6 (IPv6) addresses in a wireless sensor network is provided that includes storing, on a wireless sensor device in the wireless sensor network, a prefix of an IPv6 address in association with a key, forming an address indicator for the IPv6 address, the address indicator consisting of the key and a node address of the IPv6 address, and storing the address indicator in at least one memory location on the wireless sensor device in lieu of the IPv6 address.

Compression of internet protocol version 6 addresses in wireless sensor networks

A system is provided. In some examples, the system includes a control circuit and a plurality of monitor circuits including a first monitor circuit. In a production mode, the control circuit is configured to test the plurality of monitor circuits. In a storage mode after testing the plurality of monitor circuits in the production mode, the control circuit is configured to test the plurality of monitor circuits more than once. In an assembly mode after testing the plurality of monitor circuits in the storage mode, the control circuit is configured to test the plurality of monitor circuits. In one or more examples, the control circuit is configured to skip the storage mode and test the plurality of monitor circuits in the assembly mode after testing in the production mode.

Operating modes for testing monitor circuits

Methods, apparatus, systems, and articles of manufacture are disclosed to improve one-hop extension in wireless battery management systems. An example apparatus is to cause transmission of an instruction to a first battery monitoring node (BMN) of a vehicle, the first BMN in communication with the apparatus, the instruction to cause the first BMN to operate as a repeater for a second BMN of the vehicle, the second BMN noncommunicative with the apparatus. The example apparatus is to process an acknowledgement from the first BMN indicating that the first BMN has configured to operate as the repeater. Additionally, the example apparatus is to cause transmission of a communication to at least the first BMN indicating a time at which at least the first BMN is to perform a first action associated with a first battery and the second BMN is to perform a second action associated with a second battery.

Methods, apparatus, and articles of manufacture to improve one-hop extension in wireless battery management systems

Methods, apparatus, systems and articles of manufacture are described for a wireless battery system. An example apparatus includes at least one memory, instructions, and processor circuitry to at least one of instantiate or execute the instructions to identify a first battery node to transmit an uplink command during a first superframe interval, transmit a downlink command to the first battery node and a second battery node, the first battery node to switch in the first superframe interval from a receive state to a transmit state in response to the downlink command, the first battery node to transmit the uplink command in the transmit state, and receive the uplink command from the first battery node in the first superframe interval.

Wireless battery system and related methods

A method for key refreshment in a wireless network system using a salt. The method includes receiving, from each of a plurality of secondary nodes communicably coupled to a primary node, a current session number. The current session numbers are compared to a session number at the primary node to identify a mismatch, and a salt is generated responsive to identifying the mismatch. The method further includes sending the salt to each of the plurality of secondary nodes having a current session number matching the session number at the primary node.

Salted key refreshment in wireless battery management systems

A network includes an intermediate node to communicate with a child node via a wireless network protocol. An intermediate node synchronizer in the intermediate node facilitates time synchronization with its parent node and with the child node. A child node synchronizer in the child node to facilitates time synchronization with the intermediate node. The intermediate node synchronizer exchanges synchronization data with the child node synchronizer to enable the child node to be time synchronized to the intermediate node before the intermediate node is synchronized to its parent node if the intermediate node has not synchronized to its parent node within a predetermined guard time period established for the child node.

Node synchronization for networks

A network includes at least two nodes that employ a routing protocol to communicate across a network. One of the nodes is a parent node and another of the nodes is a child node of the parent node. An address generator assigns a unique network address to the child node by appending an address value of a number of bits to a parent address of the parent node to create the unique network address for the child node.

Address generation for networks

A method includes determining by a primary node a network formation process to establish a network with a secondary node according to a network condition of the primary node and the secondary node, the secondary node previously paired to the primary node in a previously established network connection between the primary node and the secondary node, performing by the primary node a scanning phase as part of the network formation process with the secondary node according to network configuration information stored by the primary node and the secondary node and obtained by the primary node and the secondary node in the previously established network connection; and skipping by the primary node a pairing phase of the network formation process with the secondary node responsive to the secondary node being previously paired to the primary node in the previously established network connection.

Network formation in wireless systems

A vehicular battery management system (BMS) comprises a battery controller, a set of battery cells, a primary network node coupled to the battery controller, and a secondary network node coupled to the set of battery cells. The primary and secondary network nodes are configured to wirelessly communicate with each other using frames that share a common frame format. The frame format includes one or more bits and a status of the one or more bits indicates whether the secondary network node is to communicate with the primary network node on behalf of another secondary network node.

One-hop extension

Excessive latencies and power consumption are avoided when a large number of leaf nodes (LNs) contend simultaneously to join a time slotted channel hopping wireless communication network having a root node (RN) interfaced to LNs by one or more intermediate nodes (INs). A first plurality of shared transmit/receive slots (STRSs) is allocated for at least one IN, and a second plurality of STRSs is advertised for use by contending LNs, where the first plurality is larger than the second plurality. When a LN joins, its STRSs are re-defined such that most become shared transmit-only slots (STOSs) and no STRSs remain. The numbers of STRSs allocated to INs may vary inversely with their hop counts from the RN. One or more STOSs may be added for each of one or more INs in response to a predetermined network condition.

Adaptive time slot allocation to reduce latency and power consumption in a time slotted channel hopping wireless communication network

In examples, a vehicular battery management system (BMS) comprises a set of battery cells and a secondary network node coupled to the set of battery cells. The secondary network node is configured to measure a parameter in the set of battery cells and generate a packet containing the parameter. The packet indicates a number of super frame slots that have elapsed from a start time of a super frame to the generation of the packet. The secondary network node is configured to wirelessly transmit the packet within the super frame to a primary network node. The primary network node is configured to wirelessly receive the packet and to determine a time at which the secondary network node generated the packet based on the indication, a time duration of each slot in the super frame, and the start time of the super frame.

Determining super frame packet generation times

A communication circuit includes network formation circuitry configured to establish a wireless network between a primary wireless transceiver and a secondary wireless transceiver. The communication circuit also includes data transfer circuitry configured to perform data transfers between the primary wireless transceiver and the secondary wireless transceiver. The communication circuit further includes resynchronization circuitry configured to resynchronize the secondary wireless transceiver with the established wireless network within a target time interval.

Wireless transceiver resynchronization options during wireless management of subsystems

An emulated wireless access point (AP) at a first PMC device (PMC) establishes a first tunneled direct link setup (TDLS) session between a first station module (STA) incorporated into the PMCand a second station module (STA) incorporated into a second PMC device (PMC). Following establishment of the TDLS session, the wireless AP is allowed to sleep; and most infrastructure management duties are handled by the STAduring the session. PMC device battery charge may be conserved as a result. The emulated wireless AP may also establish a second TDLS link to a third station module (STA) incorporated into a third PMC device (PMC). The STAmay then bridge data traffic flow between the STAand the STA. Such bridging operation may enable communication between two PMC devices otherwise unable to decode data received from the other.

Power efficient tunneled direct link setup apparatus, systems and methods

A battery management system (BMS) is presented herein. The BMS has a master node. The master node includes a master transceiver and a controller communicably coupled to the master transceiver. The BMS has a plurality (n) of slave nodes. Each slave node of the n slave nodes includes a slave transceiver for communicably coupling to at least one battery monitor. The controller of the BMS is configured to direct the master transceiver to establish a communications network with the n slave nodes. To establish the communications network, the controller is also configured to respectively assign each of the n slave nodes to non-overlapping time slots of a superframe. The controller is further configured to direct the master transceiver to consecutively receive uplink (UL) transmissions from the n slave nodes in the non-overlapping time slots of the superframe.

Optimizing node location in a battery management system

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Plano, TX, United States of America

Ariton E Xhafa