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公开(公告)号：US11844038B2
公开(公告)日：2023-12-12
申请号：US17473609
申请日：2021-09-13
发明人： Kumaran Vijayasankar , Wonsoo Kim
IPC分类号： H04W56/00
CPC分类号： H04W56/0015 , H04W56/0005
摘要： In examples, an electronic device comprises a transceiver and a processor coupled to the transceiver. The processor is configured to synchronize a clock of the electronic device to a clock of another electronic device using elapsed time indications in multiple packets received from the another electronic device via the transceiver. The processor is configured to transmit a packet via the transceiver using the synchronized clock of the electronic device.
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公开(公告)号：US11831358B2
公开(公告)日：2023-11-28
申请号：US18053403
申请日：2022-11-08
IPC分类号： H04B3/54 , H04L12/413
CPC分类号： H04B3/544 , H04L12/413 , H04B2203/5408 , H04B2203/5433 , H04B2203/5445
摘要： Systems and methods for setting a carrier-sensing mechanism in a PLC node are disclosed. In a PLC standard, coexistence is achieved by having the nodes detect a common preamble and backing off by a Coexistence InterFrame Space (cEIFS) time period to help the node to avoid interfering with the other technologies. In one embodiment, a PHY primitive is sent from the PHY to the MAC know that there has been a preamble detection. A two-level indication may be used—one indication after receiving the preamble and other indication after decoding the entire frame. The MAC sets the carrier-sensing mechanism based on the preamble detection.
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公开(公告)号：US20220070064A1
公开(公告)日：2022-03-03
申请号：US17521968
申请日：2021-11-09
摘要： An algorithm for the promotion of terminal nodes to switch nodes in a PLC network reduces overall network overhead and collisions, while ensuring the appropriate selection of a switch node and minimizing the number of levels in a PLC network. It also ensures that the terminal nodes with appropriate signal-to-noise ratios (SNRs) are promoted. It is desirable to have a network with fewer levels. The disclosed approach favors the nodes that are closer to the DC to promote them as switch nodes. This is achieved by waiting for a smaller number of PNPDUs for a node that is closer to the DC in comparison to a node that is farther away from the DC.
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公开(公告)号：US20200322002A1
公开(公告)日：2020-10-08
申请号：US16852700
申请日：2020-04-20
IPC分类号： H04B3/54 , H04L12/413
摘要： Systems and methods for setting a carrier-sensing mechanism in a PLC node are disclosed. In a PLC standard, coexistence is achieved by having the nodes detect a common preamble and backing off by a Coexistence InterFrame Space (cEIFS) time period to help the node to avoid interfering with the other technologies. In one embodiment, a PHY primitive is sent from the PHY to the MAC know that there has been a preamble detection. A two-level indication may be used—one indication after receiving the preamble and other indication after decoding the entire frame. The MAC sets the carrier-sensing mechanism based on the preamble detection.
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公开(公告)号：US10687309B2
公开(公告)日：2020-06-16
申请号：US15009279
申请日：2016-01-28
摘要： A method of operating a mesh network is disclosed. The method includes joining a network as a child of a parent node and receiving a downlink broadcast channel from the parent node. The method further includes setting the downlink broadcast channel as an uplink broadcast channel in response to the step of receiving.
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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
IPC分类号： H04L12/753 , H04L29/12 , H04L12/751
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：US10116575B2
公开(公告)日：2018-10-30
申请号：US14540111
申请日：2014-11-13
IPC分类号： H04L12/825 , H04L12/801 , H04B3/54 , H04L12/835 , H04L12/823
摘要： A method of powerline communications in a powerline communications (PLC) network including a first PLC device and at least a second PLC device. The first PLC device transmits a data frame to the second node over a PLC channel. The second PLC device has a data buffer for storing received information. The second PLC device runs a flow control algorithm which determines a current congestion condition or a projected congestion condition of the data buffer based on at least one congestion parameter. The current congestion condition and projected congestion condition include nearly congested and fully congested. When the current or projected congestion condition is either nearly congested or fully congested, the second PLC device transmits a BUSY including frame over the PLC channel to at least the first PLC device. The first PLC device defers transmitting of any frames to the second PLC device for a congestion clearing wait time.
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公开(公告)号：US10064218B2
公开(公告)日：2018-08-28
申请号：US15450644
申请日：2017-03-06
IPC分类号： H04L12/413 , H04W74/08 , H04W4/80 , H04B1/713 , H04L5/00
CPC分类号： H04W74/0808 , H04B1/713 , H04B2001/7154 , H04L5/0012 , H04L5/0055 , H04W4/80 , H04W74/085
摘要： A method of channel access for a radio device in an asynchronous channel hopping wireless network. A backoff time is set from an Interference Avoidance Delay plus a random backoff time for transmissions from the radio device. For initial frame transmissions, an initial value for a number of backoffs (nb) and initial number of preamble detection backoffs (npdb) is set. After waiting for expiring of the initial backoff time and provided a current npdb_value
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公开(公告)号：US20170317987A1
公开(公告)日：2017-11-02
申请号：US15143460
申请日：2016-04-29
CPC分类号： H04L63/0428 , H04L63/0435 , H04L63/061 , H04L67/141 , H04W4/70 , H04W12/02 , H04W12/04 , H04W12/06
摘要： A network system comprising a first network element and a second network element. The first network element is programmed to provide the step of first, communicating to the second network element a plurality of configuration parameter sets. Each configuration parameter set corresponds to a respective frame fragment and comprises a parameter value that differs in value from the parameter value in another configuration parameter set in the plurality of configuration parameter sets. The first network element also is programmed to provide the step of second, communicating a frame, to the second network element, in a plurality of frame fragments, wherein each frame fragment in the plurality of frame fragments is communicated according to a respective parameter value in the plurality of configuration parameter sets.
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公开(公告)号：US09602394B2
公开(公告)日：2017-03-21
申请号：US14663415
申请日：2015-03-19
IPC分类号： H04W4/00 , H04L12/721 , H04B3/54 , H04L12/707
CPC分类号： H04L45/26 , H04B3/542 , H04L45/124 , H04L45/22
摘要： Determination of a transmission through a network having a plurality of nodes using carrier sense multiple access collision avoidance (CSMA/CA) may be performed by broadcasting a route request (RREQ) packet from a source node that is targeted towards a destination node within the network, such that the RREQ is received by a first set of nodes in proximity to the source node. After first receiving a RREQ, each of the plurality of nodes rebroadcasts the RREQ after waiting a randomized amount of wait time. During each randomized wait time, the node suppresses all but one RREQ received by the node during the wait time.
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