公开(公告)号：US11206239B2

公开(公告)日：2021-12-21

申请号：US14797764

申请日：2015-07-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Alper S. Akyurek ,  Ariton E. Xhafa ,  Jianwei Zhou ,  Ramanuja Vedantham

IPC: H04L29/12

Abstract: 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.

公开(公告)号：US20190387531A1

公开(公告)日：2019-12-19

申请号：US16557002

申请日：2019-08-30

Applicant: Texas Instruments Incorporated

Inventor： Bradford James Campbell ,  Ariton E. Xhafa ,  Anuj Batra

IPC: H04W72/10

Abstract: A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.

公开(公告)号：US10405326B2

公开(公告)日：2019-09-03

申请号：US13951839

申请日：2013-07-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bradford James Campbell ,  Ariton E. Xhafa ,  Anuj Batra

IPC: H04W72/10

Abstract: A system and method for optimizing power consumption of energy harvesting nodes in a wireless sensor network. In one embodiment, a system includes a network coordinator. The network coordinator includes a wireless transceiver and a controller. The wireless transceiver is configured to provide access to the wireless sensor network. The controller is configured to determine whether a wireless device that is wirelessly communicating with the network coordinator is powered via energy harvesting. The controller is also configured to schedule, based on a determination that the wireless device is powered via energy harvesting, the wireless device to communicate via the wireless sensor network using a priority timeslot of a superframe of the wireless sensor network. The priority timeslot is a timeslot occurring in an initial portion of the superframe.

公开(公告)号：US09647689B2

公开(公告)日：2017-05-09

申请号：US14598000

申请日：2015-01-15

Applicant: Texas Instruments Incorporated

Inventor： Ariton E. Xhafa ,  Jing-Fei Ren

IPC: H03M13/00 ,  H03M13/09 ,  H04B7/26 ,  H04L1/08 ,  H04L1/00

CPC classification number: H03M13/09 ,  H04B7/26 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/0072 ,  H04L1/08

Abstract: A system and method for detecting and correcting bit errors in received packets is disclosed. The presence of bit errors in a received packet are detected using CRC bits carried in the received packet. One or more erroneous bits may be identified in a header of the packet. The erroneous bits are corrected by setting the erroneous bits to match the expected bit settings. The corrected packet is then error-checked using the CRC bits. Errors may be detected in two sequential packets where a second packet is a retransmission of a first packet. Differing bits are identified in the two sequential packets. A packet is modified to include additional combinations of the differing bits and then error-checked with each combination of the differing bits. If a modified packet passes error checking, then process the modified packet.

公开(公告)号：US09596558B2

公开(公告)日：2017-03-14

申请号：US14663270

申请日：2015-03-19

Applicant: Texas Instruments Incorporated

Inventor： Ariton E. Xhafa ,  Jianwei Zhou ,  Arvind Kandhalu Raghu ,  Ryan Nuzzaci

IPC: H04W4/00 ,  H04W74/02 ,  H04W84/18

CPC classification number: H04W4/70 ,  H04L12/44 ,  H04L41/0886 ,  H04W48/16 ,  H04W72/0446 ,  H04W74/02 ,  H04W84/18

Abstract: A method of transmitting association requests in a wireless sensor network includes transmitting an association request from a leaf node to an intermediate node. The method further includes transmitting the association request from the intermediate node during one of either a shared time slot or a dedicated time slot in response to at least one of the timing of dedicated time slots and data collision rates during shared time slots.

Abstract translation: 在无线传感器网络中发送关联请求的方法包括：从叶节点向中间节点发送关联请求。 响应于在共享时隙期间的专用时隙的定时和数据冲突率中的至少一个，该方法还包括在共享时隙或专用时隙之一期间从中间节点发送关联请求。

公开(公告)号：US20160360546A1

公开(公告)日：2016-12-08

申请号：US14982418

申请日：2015-12-29

Applicant: Texas Instruments Incorporated

Inventor： Arvind Kandhalu Raghu ,  Ariton E. Xhafa ,  Ramanuja Vedantham

IPC: H04W72/12 ,  H04W72/04 ,  H04W74/08

CPC classification number: H04W74/0808

Abstract: Transmission on a shared wireless communication channel is contended for by selecting one of a predetermined plurality of dedicated channel sensing intervals, and then performing channel sensing relative to the channel during the selected channel sensing interval. A transmission is sent on the channel in response to a determination that the channel is idle.

Abstract translation: 通过选择预定的多个专用信道感测间隔中的一个，然后在所选择的信道感测间隔期间相对于信道执行信道感测来争夺共享无线通信信道上的传输。 响应于确定信道空闲，在信道上发送传输。

公开(公告)号：US20160204827A1

公开(公告)日：2016-07-14

申请号：US14993552

申请日：2016-01-12

Applicant: Texas Instruments Incorporated

Inventor： Chao-Fang Shih ,  Ariton E. Xhafa ,  Jianwei Zhou

IPC: H04B1/7143

CPC classification number: H04B1/7143

Abstract: Disclosed examples include methods and network devices for communicating in a wireless network, in which the device generates frequency hopping sequence y(j) having a prime number sequence length p, using cyclotomic classes in a field of p or using a baby-step giant-step algorithm, where y(0)=p−1 and the remaining sequence values y(j)=logα(j) mod (p−1). In certain examples, α=2 and the sequence is generated without solving logarithms using one or more algorithms to conserve memory and processing complexity for low power wireless sensors or other IEEE 802.15.4e based networks using Time-Slotted Channel Hopping (TSCH) communications.

Abstract translation: 公开的示例包括用于在无线网络中进行通信的方法和网络设备，其中设备使用p字段中的循环类生成具有素数序列长度p的跳频序列y（j） 其中y（0）= p-1，剩余的序列值y（j）=logα（j）mod（p-1）。 在某些示例中，α= 2，并且使用一个或多个算法来生成序列而不使用一个或多个算法来节省使用时隙信道跳跃（TSCH）通信的低功率无线传感器或其他基于IEEE 802.15.4e的网络的存储器和处理复杂度。

公开(公告)号：US20160037449A1

公开(公告)日：2016-02-04

申请号：US14751602

申请日：2015-06-26

Applicant: Texas Instruments Incorporated

Inventor： Arvind Kandhalu Raghu ,  Ariton E. Xhafa ,  Jianwei Zhou ,  Ramanuja Vedantham ,  Xiaolin Lu

IPC: H04W52/02 ,  H04L5/00 ,  H04W56/00 ,  H04W72/04

CPC classification number: H04W52/0209 ,  H04L5/0048 ,  H04W48/00 ,  H04W56/001 ,  H04W72/12 ,  H04W84/10 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144

Abstract: A device may be coupled to a time slot based communication system and receive a timing beacon packet that is broadcast in a time slot of the communication system at a periodic rate, in which the network uses a time slotted channel hopping protocol of sequential frames each having a plurality of time slots. The device may synchronize its time base to the timing beacon. The device may calculate a sleep time corresponding to a number of time slots until a next time slot that is scheduled for use by the device and then place the device in a sleep mode. The device may be awakened after the sleep time and operate during the next time slot. The device may repeat the process of calculating a sleep time, going into sleep mode, and waking for operation after the sleep time in order to reduce power consumption.

Abstract translation: 设备可以耦合到基于时隙的通信系统，并且以周期速率接收在通信系统的时隙中广播的定时信标分组，其中网络使用具有连续帧的时隙信道跳频协议，每个时隙信道分组具有 多个时隙。 设备可以将其时基同步到定时信标。 设备可以计算对应于多个时隙的休眠时间，直到调度供设备使用的下一个时隙，然后将设备置于睡眠模式。 睡眠时间后可能会唤醒设备，并在下一个时间段内进行操作。 该装置可以重复计算休眠时间，进入睡眠模式，以及在休眠时间之后唤醒操作以减少功耗的过程。

公开(公告)号：US20160014690A1

公开(公告)日：2016-01-14

申请号：US14862787

申请日：2015-09-23

Applicant: Texas Instruments Incorporated

Inventor： Ariton E. Xhafa ,  Xiaolin Lu ,  Jianwei Zhou

IPC: H04W52/02 ,  H04L5/00 ,  H04L29/08

CPC classification number: H04W52/02 ,  H04L5/0053 ,  H04L67/12 ,  H04W52/0219 ,  Y02D70/00 ,  Y02D70/144

Abstract: The white list generator identifies wireless sensor nodes that communicate via a wireless sensor network, to identifies time slots assigned for with each of the identified wireless sensor nodes, and to create and maintain a list of the identified wireless sensor nodes and corresponding time slots. The white list generator provides power control information to power a transceiver for reception of transmissions from each identified wireless sensor node based on the identified time slots corresponding to the identified wireless sensor node provided in the list.

Abstract translation: 白名单发生器识别通过无线传感器网络进行通信的无线传感器节点，以识别与每个所识别的无线传感器节点分配的时隙，以及创建和维护所识别的无线传感器节点和相应时隙的列表。 白名单发生器提供功率控制信息，以便为收发器提供功率，以便根据所识别的与列表中提供的无线传感器节点相对应的时隙，从每个识别的无线传感器节点接收传输。

公开(公告)号：US09204486B2

公开(公告)日：2015-12-01

申请号：US13852174

申请日：2013-03-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ariton E. Xhafa ,  Soon-Hyeok Choi ,  Srinath Hosur ,  Yanjun Sun

IPC: H04J1/16 ,  H04W84/18 ,  H04W72/12 ,  H04W88/06

CPC classification number: H04W72/1215 ,  H04W4/80 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06

Abstract: A wireless device includes a wireless transceiver configured to transmit to and receive from nodes in a wireless sensor network (WSN) and control logic coupled to the first wireless transceiver. The wireless transceiver transmits a wireless packet to a node in the WSN based on the transmission coinciding with a break in transmissions for a second wireless network. Based on the wireless transceiver being configured to transmit the wireless packets utilizing time synchronized channel hopping, slot frames for packet transmissions in the WSN are time offset so as not to coincide with transmissions made on the second wireless network. Based on the wireless transceiver being configured to transmit the packets utilizing coordinated sampled listening, wake up sequence transmissions for the WSN are time offset so as not to coincide with the transmissions made on the second wireless network.

Abstract translation: 无线设备包括被配置为向无线传感器网络（WSN）中的节点传送和从其接收的无线收发机以及耦合到第一无线收发器的控制逻辑。 无线收发器基于与第二无线网络的传输中断一致的传输将无线分组传送到WSN中的节点。 基于无线收发器被配置为使用时间同步信道跳频发送无线分组，用于WSN中的分组传输的时隙帧是时间偏移的，以便不与在第二无线网络上进行的传输相一致。 基于无线收发器被配置为使用协调采样监听来发送分组，用于WSN的唤醒序列传输是时间偏移，以便不与在第二无线网络上进行的传输相一致。