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公开(公告)号：US10965339B2
公开(公告)日：2021-03-30
申请号：US16877062
申请日：2020-05-18
发明人： Jyotirmoy Banik , Il Han Kim , Jianwei Zhou , Xiaolin Lu
IPC分类号： H04B1/00 , H04B1/7143
摘要： A method of generating a channel hopping sequence for a link in a wireless sensor network includes receiving performance quality data for respective frequency channels of frequency channels in the link in a monitoring system, determining a channel quality indicator (CQI) by the monitoring system for each frequency channel based on the respective performance quality data, and determining a repetition factor by the monitoring system for each frequency channel based on the respective CQI. A repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.
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公开(公告)号：US20190097679A1
公开(公告)日：2019-03-28
申请号：US16137456
申请日：2018-09-20
发明人： Jyotirmoy Banik , Il Han Kim , Jianwei Zhou , Xiaolin Lu
IPC分类号： H04B1/7143
摘要： A method of generating a channel hopping sequence for a link in a wireless sensor network is provided that includes receiving performance quality data for respective frequency channels of a plurality of frequency channels in the link in a monitoring system, determining a channel quality indicator (CQI) by the monitoring system for each frequency channel based on the respective performance quality data, and determining a repetition factor by the monitoring system for each frequency channel based on the respective CQI, wherein a repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.
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13.发明授权公开(公告)号：US09854516B2
公开(公告)日：2017-12-26
申请号：US14751602
申请日：2015-06-26
CPC分类号： H04W52/0209 , H04L5/0048 , H04W48/00 , H04W56/001 , H04W72/12 , H04W84/10 , H04W84/18 , Y02D70/00 , Y02D70/142 , Y02D70/144
摘要： 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.
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公开(公告)号：US09844033B2
公开(公告)日：2017-12-12
申请号：US15054508
申请日：2016-02-26
CPC分类号： H04W72/04 , H04W72/0406
摘要： In accordance with various embodiments, a system and method of distributed transmission resource management in a wireless network is disclosed. The transmission resource allocation is distributed throughout the network to all nodes. In distributed resource management, the resource allocation may be performed by child and/or remote nodes and child and/or remote nodes actively manage transmission resource allocation in the wireless network.
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公开(公告)号：US20170257138A1
公开(公告)日：2017-09-07
申请号：US15057155
申请日：2016-03-01
发明人： Chao-Fang Shih , Ariton E. Xhafa , Jianwei Zhou
IPC分类号： H04B1/713
CPC分类号： H04B1/7143
摘要： An optimal frequency hopping sequence (FHS) is proposed. The FHSs can be generated with low computation complexity using the disclosed FHS generation mechanism. The sequence generation according to the embodiments provides a way to generate optimal FHS when channel-number is power of 2 using only 1 sequence. This gives an efficient way to generate optimal FHSs with frequent used channel-numbers for example, channel-numbers 2, 4, 8, 16, and others. These FHSs also provide good interfering probability when channel-number is not a power of 2. This makes TSCH with blacklisting more suitable for IEEE 802.15.4e networks operating in the presence of interference due to decrease in power consumption.
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公开(公告)号：US20170195825A1
公开(公告)日：2017-07-06
申请号：US15458876
申请日：2017-03-27
CPC分类号： H04W4/70 , H04L12/44 , H04L41/0886 , H04W48/16 , H04W72/0446 , H04W74/02 , H04W84/18
摘要： 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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公开(公告)号：US20160072548A1
公开(公告)日：2016-03-10
申请号：US14813093
申请日：2015-07-29
发明人： Chao-Fang Shih , Ariton E. Xhafa , Jianwei Zhou
IPC分类号： H04B1/7143 , H04B1/715
CPC分类号： H04B1/7143 , H04B1/715 , H04B2001/7154
摘要： A device operated in a network using a channel hopping communication protocol may select a channel for each transmission by first generating and storing a sequence of pseudo-random index numbers. A list of good channels is selected from a plurality of channels. For each channel hop, one of the good channels is selected from the list of good channels for use by a transceiver in the device by using an index number selected from the sequence of pseudo-random index numbers. The list of good channels may be revised periodically and channels may be selected from the list of good channels for use by the transceiver without revising the sequence of pseudo-random index numbers.
摘要翻译： 使用信道跳频通信协议在网络中操作的设备可以通过首先生成并存储伪随机索引序列序列来为每个传输选择一个信道。 从多个通道中选择好的频道列表。 对于每个信道跳，通过使用从伪随机索引序列序列中选择的索引号，从设备中的收发器使用的良好信道列表中选择一个良好信道。 可以定期修改良好频道的列表，并且可以从收发机使用的良好频道列表中选择频道，而不修改伪随机索引号序列。
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公开(公告)号：US11991616B2
公开(公告)日：2024-05-21
申请号：US18064636
申请日：2022-12-12
发明人： Ariton E. Xhafa , Jianwei Zhou , Xiaolin Lu
IPC分类号： H04W40/24 , H04B1/7156 , H04L45/02 , H04W84/18 , H04W84/20
CPC分类号： H04W40/248 , H04B2001/71563 , H04L45/026 , H04W84/18 , 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：US11818643B2
公开(公告)日：2023-11-14
申请号：US17517700
申请日：2021-11-03
发明人： Ariton Xhafa , Jianwei Zhou , Xiaolin Lu , Il Han Kim , Kaichien Tsai
IPC分类号： H04W40/02 , H04W36/00 , H04L49/201 , H04W8/26 , H04L12/18 , H04W74/08 , H04W72/20 , H04W72/27 , H04W72/30 , H04W92/20 , H04W76/15 , H04W84/18
CPC分类号： H04W40/023 , H04L12/189 , H04L49/201 , H04W8/26 , H04W36/0033 , H04W72/20 , H04W72/27 , H04W72/30 , H04W74/0808 , H04W76/15 , H04W84/18 , H04W92/20
摘要： A network includes a mobile network node (MNN) that includes a mobile node communications manager (MNCM) to facilitate wireless communications to a plurality of stationary network nodes (SNNs) in a wireless network via a wireless network protocol. The MNCM utilizes a multicast address received over the wireless network. The multicast address is assigned to a predetermined network time slot to communicate uplink data from the MNN to the SNNs. The MNN receives downlink data via a separate predetermined network address and time slot assigned to a given SNN.
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公开(公告)号：US11689900B2
公开(公告)日：2023-06-27
申请号：US17330715
申请日：2021-05-26
IPC分类号： H04W4/18 , H04L61/103 , H04W84/18 , H04L101/659 , H04L101/672 , H04L101/681 , H04L101/604
CPC分类号： H04W4/18 , H04L61/103 , H04L2101/604 , H04L2101/659 , H04L2101/672 , H04L2101/681 , H04W84/18
摘要： 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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