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公开(公告)号：US20220150831A1
公开(公告)日：2022-05-12
申请号：US17598396
申请日：2019-06-11
摘要： A method performed by a low-power node (LPN) in a wireless mesh network, wherein the LPN comprises a main receiver and a wakeup receiver, and wherein the method comprises: performing the following first operations in response to an event trigger: activating the wakeup receiver while maintaining the main receiver in an inactive state, and sending a polling message to a second node in the wireless mesh network; for a predetermined duration, determining whether a wakeup signal has been received from the second node via the wakeup receiver; and performing a plurality of second operations based on determining that the wakeup signal has been received, the second operations including: activating the main receiver, and receiving, from the second node via the main receiver, a response to the polling message.
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公开(公告)号：US10070388B2
公开(公告)日：2018-09-04
申请号：US15031218
申请日：2016-03-14
摘要： In one aspect, a node in a mesh network receives presence messages from neighbor node in the mesh network, and determines a number of neighbor nodes, based on the received presence messages. The node determines a duty cycle percentage to be requested of the neighbor nodes, based on the number of the neighbor nodes, the duty cycle percentage indicating a minimum percentage of time the neighbor nodes should be awake to receive messages, so as to ensure a predetermined probability of successful reception of messages transmitted by the node. The node broadcasts the duty cycle percentage for reception by the neighbor nodes. The node also receives requested duty cycle percentages from corresponding neighbor nodes, sets an operating duty cycle of the node based on a greatest duty cycle percentage of the received duty cycle percentages, and sleeps and wakes according to the set duty cycle of the node.
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公开(公告)号：US11234122B2
公开(公告)日：2022-01-25
申请号：US16316663
申请日：2016-08-10
摘要： There is provided a method and corresponding arrangements and network nodes/devices for enabling packet forwarding in a wireless mesh network comprising a plurality of nodes. Basically, the method comprises conforming, for transmission of the same network layer information from at least two different nodes, the corresponding over-the-air packets to be node-independent, and scheduling the conformed over-the-air packets for synchronized and simultaneous transmission from the at least two different nodes.
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公开(公告)号：US20170105178A1
公开(公告)日：2017-04-13
申请号：US15031218
申请日：2016-03-14
CPC分类号： H04W52/0232 , H04W40/248 , H04W76/28 , H04W84/18 , Y02D70/00 , Y02D70/1224 , Y02D70/1244 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/22
摘要： In one aspect, a node in a mesh network receives presence messages from neighbor node in the mesh network, and determines a number of neighbor nodes, based on the received presence messages. The node determines a duty cycle percentage to be requested of the neighbor nodes, based on the number of the neighbor nodes, the duty cycle percentage indicating a minimum percentage of time the neighbor nodes should be awake to receive messages, so as to ensure a predetermined probability of successful reception of messages transmitted by the node. The node broadcasts the duty cycle percentage for reception by the neighbor nodes. The node also receives requested duty cycle percentages from corresponding neighbor nodes, sets an operating duty cycle of the node based on a greatest duty cycle percentage of the received duty cycle percentages, and sleeps and wakes according to the set duty cycle of the node.
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公开(公告)号：US20220201610A1
公开(公告)日：2022-06-23
申请号：US17441892
申请日：2019-09-23
摘要： A method of establishing connection between a first node in a wireless network and a second node in said wireless network, wherein each of said first and second nodes comprise a primary radio receiver and a wake up receiver, each of said nodes comprising a Radio Frequency, RF, switch, arranged to connect one of said primary or secondary radios to a radio antenna, said method comprising the steps of transmitting, by said first node, to a wake-up receiver of a second radio node, a wake-up signal that indicates a frequency channel on which the second radio node is to transmit a response, receiving, by said first node, in response to transmitting said wake-up signal, response from said second radio node on the frequency channel indicated, and establishing, by said first node, a connection between said first and second nodes in order to transfer data between said first and second nodes. The present disclosure also relates to corresponding mesh nodes and a computer program product.
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公开(公告)号：US20210168066A1
公开(公告)日：2021-06-03
申请号：US17263324
申请日：2018-11-16
IPC分类号： H04L12/707 , H04W40/02
摘要： A method for establishing redundant paths between a source node and the destination node, source node and a destination node in a wireless mesh network, said method comprising the steps of establishing, by said source node, a first path between said source node and said destination node, wherein said first path is associated with a first sequence number and comprises one or more first intermediate nodes in said wireless mesh network; determining, by said source node, to establish a second path between said source node and said destination node; transmitting, by said source node, a path request to a plurality of nodes in said wireless mesh network, wherein said path request identifies said destination node and that said requested second path is redundant to said first path; and said path request is transmitted no earlier than a predetermined duration after said first path is established; receiving, by said source node, from said destination node, a path reply that identifies said second path, wherein said second path comprises one or more second intermediate nodes, and wherein said one or more second intermediate are exclusive of said one or more first intermediate nodes. Complimentary methods and devices for establishing redundant paths in a wireless mesh network are also presented herein.
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7.发明申请公开(公告)号：US20200245221A1
公开(公告)日：2020-07-30
申请号：US16756108
申请日：2017-10-27
发明人： Anna Larmo , Piergiuseppe Di Marco
摘要： A method of updating a number of retransmissions for a mesh node in a mesh network comprising a plurality of mesh nodes, wherein said number of retransmissions define how often said mesh node retransmits received messages within said mesh network, said method comprising the steps of receiving, by said mesh node, a number of data messages, wherein each of said data messages originates from a same source mesh node and is intended for a same destination mesh node in said mesh network, transmitting, by said mesh node, each of said number of data messages based on said number of retransmissions receiving, by said mesh node, a number of acknowledgement messages, wherein each acknowledgement message originates from said RD mesh node and acknowledges receipt of a particular data message of said first number of data messages, and updating, by said mesh node, said number of retransmissions based on said number of data messages and based on said number of acknowledgement messages. Complementary devices for performing a method according to the invention are also presented herein.
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公开(公告)号：US20180035331A1
公开(公告)日：2018-02-01
申请号：US15551496
申请日：2015-03-03
IPC分类号： H04W28/12 , H04L12/807 , H04W28/02 , H04W4/00 , H04W56/00
CPC分类号： H04W28/12 , H04L1/00 , H04L1/0003 , H04L1/0015 , H04L1/18 , H04L1/1877 , H04L1/188 , H04L43/16 , H04L47/127 , H04L47/27 , H04W4/70 , H04W28/0215 , H04W28/0284 , H04W56/001 , H04W88/08
摘要： The present disclosure relates to an access point (2) and to a sensor station (4) and methods performed therein. The access point (2) is adapted to communicate with the sensor station (4) and vice versa, over a communication channel using a contention based channel access. The access point (2) monitors (110) the traffic of the communication channel and estimates a congestion level of the communication channel. Information indicating the congestion level is incorporated (125) into a synchronization frame (200; 300) which is transmitted (140) to the sensor station (4). The sensor station (4) uses the congestion information when it selects which modulation and coding scheme it should use when sending data to the access point.
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公开(公告)号：US11576022B2
公开(公告)日：2023-02-07
申请号：US16609815
申请日：2018-06-07
发明人： Jingcheng Zhang , Piergiuseppe Di Marco , Per Elmdahl , Thomas Rimhagen , Wei Shen , Per Skillermark
摘要： Embodiments herein relate to e.g. a method performed by a network node (10) for handling communication of data in a Bluetooth Low Energy (BLE) mesh network (1). The network node obtains a neighbor table, wherein the neighbor table is based on messages received from different network nodes; and selects an association between network nodes in the BLE mesh network (1) taking the neighbor table into account.
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公开(公告)号：US20220232449A1
公开(公告)日：2022-07-21
申请号：US17617783
申请日：2019-06-11
摘要： A method of waking up a mesh node in a wireless mesh network, wherein said mesh node comprises a main receiver and a wakeup receiver, and wherein said method comprises the steps of receiving, by said wakeup receiver of said mesh node, a wake up signal message, wherein said wake up signal message comprises context information which is related to a path between a source mesh node and a destination mesh node corresponding to said wake up signal message, determining, by said wakeup receiver of said mesh node, that said context information is applicable for said mesh node, activating, by said wakeup receiver of said mesh node, said main receiver of said mesh node for subsequently receiving a data message.
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