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公开(公告)号：US11943621B2
公开(公告)日：2024-03-26
申请号：US16216919
申请日：2018-12-11
发明人： Ariton E. Xhafa , Ram Machness , Minghua Fu , Ramanuja Vedantham
IPC分类号： H04W12/104 , H04L1/00 , H04L9/06 , H04W4/80 , H04W12/033 , H04W12/106 , H04W12/108 , H04W12/12 , H04W64/00 , H04W80/02
CPC分类号： H04W12/104 , H04L1/0061 , H04L9/0631 , H04W4/80 , H04W12/033 , H04W12/106 , H04W12/108 , H04W12/12 , H04W64/00 , H04W80/02
摘要： At least some aspects of the present disclosure provide for a method of data transmission, performed by a wireless device. In some examples, the method includes receiving a localization tone having a first value. The method further includes inserting the localization tone into a data packet at an application layer of a communication protocol stack, the localization tone preceding data of a payload of the data packet and having a last bit immediately preceding a first bit of the data of the payload. The method further includes generating a modified localization tone estimating an effect of processing on the localization tone, wherein the modified localization tone is generated and configured to have the first value after undergoing processing. The method further includes replacing the localization tone in the data packet with the modified localization tone. The method further includes transmitting the data packet.
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公开(公告)号：US11902923B2
公开(公告)日：2024-02-13
申请号：US18157921
申请日：2023-01-23
发明人： Ariton E. Xhafa , Jianwei Zhou , Xiaolin Lu
CPC分类号： H04W56/001 , H04W76/25
摘要： 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.
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公开(公告)号：US11812268B2
公开(公告)日：2023-11-07
申请号：US17491218
申请日：2021-09-30
发明人： Ariton E. Xhafa , Vishal Coelho , Alexis Justine Burnight , Ramanuja Vedantham , Karl-Heinz Steinmetz
IPC分类号： H04W12/104 , H04W12/106
CPC分类号： H04W12/106
摘要： A communication circuit for communications between a controller and a subsystem with a monitored electrical component is described. The communication circuit includes network formation circuitry configured to establish a wireless network between a primary wireless node adapted to be coupled to the controller and a secondary wireless node coupled to the subsystem. The communication circuit also includes data transfer circuitry configured to perform data transfers between the primary wireless node and the secondary wireless node. The communication circuit further includes data integrity circuitry configured to: generate a hash for data received by the communication circuit; and verify the hash before the data transfer circuitry performs a data transfer of the data between the primary wireless node and the secondary wireless node.
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公开(公告)号：US20230300876A1
公开(公告)日：2023-09-21
申请号：US18324515
申请日：2023-05-26
IPC分类号： H04W72/56
摘要： 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.
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公开(公告)号：US20230300745A1
公开(公告)日：2023-09-21
申请号：US18322705
申请日：2023-05-24
IPC分类号： H04W52/02
CPC分类号： H04W52/0216 , Y02D30/70
摘要： A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.
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公开(公告)号：US11368393B2
公开(公告)日：2022-06-21
申请号：US16696150
申请日：2019-11-26
IPC分类号： H04L45/02 , H04L45/48 , H04L61/5007
摘要： 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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公开(公告)号：US20210250859A1
公开(公告)日：2021-08-12
申请号：US17242872
申请日：2021-04-28
IPC分类号： H04W52/02
摘要： A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.
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公开(公告)号：US11026170B2
公开(公告)日：2021-06-01
申请号：US13951798
申请日：2013-07-26
IPC分类号： H04W52/02
摘要： A system and method for reducing energy consumption in a wireless network. In one embodiment, a system includes a network coordinator configured to manage access to a wireless network. The network coordinator includes a controller. The controller is configured to define a channel hopping list that specifies on which channel a beacon signal is transmitted in each slot frame of the wireless network. The controller is also configured to set a number of time slots in each slot frame based on a length of the channel hopping list. The controller is further configured to transmit a first beacon signal in each slot frame on a channel specified by the channel hopping list. The number of slots in each slot frame causes the first beacon signal to be transmitted on a same channel in each slot frame.
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公开(公告)号：US10681610B2
公开(公告)日：2020-06-09
申请号：US15591867
申请日：2017-05-10
发明人： Ariton E. Xhafa , Jianwei Zhou , Xiaolin Lu
IPC分类号： H04W40/24 , H04L12/751 , H04W84/18 , H04B1/7156 , H04W84/20
摘要： 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：US10560909B2
公开(公告)日：2020-02-11
申请号：US15703700
申请日：2017-09-13
发明人： Ariton E. Xhafa , Jianwei Zhou , Il Han Kim , Kaichien Tsai , Xiaolin Lu
摘要： A network includes a plurality of parent nodes to communicate in a wireless network via a wireless network protocol. A network node establishes a network connection to one of the parent nodes of the plurality of parent nodes in response to received beacons from the parent nodes. A signal analyzer in the network node processes a received signal strength of the beacons and the number of beacons received over a given time period from each of the parent nodes. The signal analyzer selects the parent node by analyzing the received signal strength for a number of beacons received from each parent node with respect to a number of expected beacons transmitted from each parent node of the plurality of parent nodes over the given time period.
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