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公开(公告)号：US20210281985A1
公开(公告)日：2021-09-09
申请号：US17330715
申请日：2021-05-26
Applicant: Texas Instruments Incorporated
Inventor： Alper Sinan Akyurek , Ariton E. Xhafa , Jianwei Zhou , Ramanuja Vedantham
Abstract: 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.
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公开(公告)号：US11096208B2
公开(公告)日：2021-08-17
申请号：US16175490
申请日：2018-10-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Arvind K. Raghu , Ariton E. Xhafa , Ramanuja Vedantham , Xiaolin Lu
IPC: H04W72/12
Abstract: A network includes a parent node and at least one child node configured to communicate with the parent node via a wireless network protocol. The parent node includes a broadcast coordinator to transmit a broadcast message from the parent node to the child node at predetermined time intervals according to the wireless network protocol. A scheduler generates a scheduling packet that is communicated in the broadcast message. The scheduling packet includes a data field to instruct each child node to activate and receive data communicated from the parent node in a prescribed time slot following the broadcast message that is defined by the scheduling packet.
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公开(公告)号：US20200260360A1
公开(公告)日：2020-08-13
申请号：US16864405
申请日：2020-05-01
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariton E. Xhafa , Jianwei Zhou , Xiaolin Lu
IPC: H04W40/24
Abstract: A network includes at least one node to communicate with at least one other node via a wireless network protocol. The node includes a network configuration module to periodically switch a current node function of the node between an intermediate node function and a leaf node function. The switch of the current node function enables automatic reconfiguration of the wireless network based on detected communications between the at least one node and at least one intermediate node or at least one leaf node via the wireless network protocol.
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公开(公告)号：US20200099613A1
公开(公告)日：2020-03-26
申请号：US16696150
申请日：2019-11-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ramanuja Vedantham , Kumaran Vijayasankar , Arvind K. Raghu , Ariton E. Xhafa
IPC: H04L12/753 , H04L29/12 , H04L12/751
Abstract: Disclosed embodiments relate to a Hierarchical Do-Dag based RPL (H-DOC) network configuration where the network address of each node corresponds to its location within the hierarchical network. Network addresses are initialized hierarchically. Candidate patent nodes signal availability. Candidate child nodes respond to a selected candidate parent node with a temporary address. The selected candidate parent node acknowledges selection and communicates a hierarchical address for the child node in a transmission to the temporary address. The child node changes its address to the hierarchical address from the parent node. When a node switches parent nodes, it signals the old parent node to deallocate it as a child node, and then signals a selected candidate parent node with a temporary address.
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115.发明授权公开(公告)号：US10536891B1
公开(公告)日：2020-01-14
申请号：US16024336
申请日：2018-06-29
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Jianwei Zhou
Abstract: A method for operating a node in a wireless network is provided that includes computing an estimated time drift between the node and a parent node of the node, and using the estimated time drift and a number of hops between the node and a root node of the wireless network to determine a keep alive period for the node.
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Patent Agency Ranking
公开(公告)号：US20190069315A1
公开(公告)日：2019-02-28
申请号：US16175490
申请日：2018-10-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Arvind K. Raghu , Ariton E. Xhafa , Ramanuja Vedantham , Xiaolin Lu
IPC: H04W72/12
Abstract: A network includes a parent node and at least one child node configured to communicate with the parent node via a wireless network protocol. The parent node includes a broadcast coordinator to transmit a broadcast message from the parent node to the child node at predetermined time intervals according to the wireless network protocol. A scheduler generates a scheduling packet that is communicated in the broadcast message. The scheduling packet includes a data field to instruct each child node to activate and receive data communicated from the parent node in a prescribed time slot following the broadcast message that is defined by the scheduling packet.
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公开(公告)号：US10129725B2
公开(公告)日：2018-11-13
申请号：US15458876
申请日：2017-03-27
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Jianwei Zhou , Arvind Kandhalu Raghu , Ryan Nuzzaci
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.
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118.发明授权公开(公告)号：US09820294B2
公开(公告)日：2017-11-14
申请号：US14813175
申请日：2015-07-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ariton E. Xhafa , Yanjun Sun , Ramanuja Vedantham
CPC classification number: H04W72/1215 , H04W4/80 , H04W16/14 , H04W84/12 , H04W88/06
Abstract: Embodiments provide a communication device. A device comprises at least two dissimilar network technology subsystems, at least one subsystem of which is lower priority than at least another of the dissimilar subsystems. In some embodiments, a device is able to transmit a silencing frame during a transmission window within a lower priority technology network interval. A transceiver is able to calculate a transmission window to end by at least a duration of time to complete transmission of the silencing frame prior to the beginning of next immediate string of at least one higher priority network technology subsystem interval, and transmit a silencing frame during a lower priority technology network interval during the transmission window.
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119.发明授权公开(公告)号：US09614580B2
公开(公告)日：2017-04-04
申请号：US14993552
申请日：2016-01-12
Applicant: Texas Instruments Incorporated
Inventor： Chao-Fang Shih , Ariton E. Xhafa , Jianwei Zhou
IPC: H04B1/00 , 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.
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公开(公告)号：US20160210189A1
公开(公告)日：2016-07-21
申请号：US14598000
申请日：2015-01-15
Applicant: Texas Instruments Incorporated
Inventor： Ariton E. Xhafa , Jing-Fei Ren
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.
Abstract translation: 公开了一种用于检测和纠正接收到的分组中的比特错误的系统和方法。 使用在接收到的分组中携带的CRC比特来检测接收分组中的比特错误的存在。 可以在分组的报头中识别一个或多个错误比特。 通过将错误位设置为与预期位设置相匹配来校正错误位。 然后使用CRC位对纠错的数据包进行错误检查。 可以在其中第二分组是第一分组的重传的两个连续分组中检测到错误。 在两个顺序包中标识不同的位。 修改分组以包括不同比特的附加组合，然后用不同比特的每个组合进行错误检查。 如果修改的数据包通过错误检查，则处理修改的数据包。
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