公开(公告)号：US20180160321A1

公开(公告)日：2018-06-07

申请号：US15886754

申请日：2018-02-01

Applicant: Linear Technology Corporation

Inventor： Lance Robert DOHERTY ,  William Alan LINDSAY ,  Jonathan Noah SIMON ,  Alain Pierre LEVESQUE

IPC: H04W24/02 ,  H04W24/04

Abstract: The stability of a channel in a wireless network is evaluated at a node. Upon transmitting a packet from the node on a network channel, a first counter associated with the channel is incremented. Upon receiving an acknowledgment packet responsive to the transmitted packet, a second counter associated with the channel is incremented. A stability metric for the channel is computed based on values stored in the first and second counters. Additionally, interference on a channel of the network is measured at a node. Upon determining that no packet is received during a predetermined time-period on the channel, a received signal strength (RSS) is measured on the channel at an end of the predetermined time-period. Alternatively, upon determining that a packet is received during the predetermined time-period on the channel, the RSS is measured on the channel following completion of the transmission of the packet on the channel.

公开(公告)号：US20180317089A1

公开(公告)日：2018-11-01

申请号：US15963055

申请日：2018-04-25

Applicant: Linear Technology Corporation

Inventor： Alain Pierre LEVESQUE ,  Aleksandr LUSHIN ,  David Ramsay Hanson BACHER ,  Lance Robert DOHERTY

IPC: H04W12/06 ,  H04W8/30 ,  H04L29/08 ,  H04W12/04 ,  H04L9/08

Abstract: In a wireless mesh network having multiple network managers, the network managers maintain network security through the use of encryption keys and packet counters. To ensure that each network manager can authenticate communications with any node of the network, the authentication data is replicated in a disjoint manner in all network managers. Advantageously, network reliability is assured by providing redundant managers that can seamlessly maintain network operation even if multiple network managers fail; newly joining managers can obtain full authentication data for the network upon joining; and network throughput is increased by ensuring that any of the multiple managers can authenticate the communications of any network node. The disjoint replication of the authentication data across all network managers is performed with low data-rate manager-to-manager packets propagated through the network. The disjoint security methods and systems can advantageously be used in wireless battery monitoring systems, for example.

公开(公告)号：US20170055236A1

公开(公告)日：2017-02-23

申请号：US15243335

申请日：2016-08-22

Applicant: LINEAR TECHNOLOGY CORPORATION

Inventor： Alain Pierre LEVESQUE ,  Lance Robert DOHERTY ,  Jonathan Noah SIMON ,  William Alan LINDSAY

IPC: H04W56/00 ,  H04L12/26

CPC classification number: H04W56/0015 ,  H04B7/2693 ,  H04J3/0644 ,  H04L43/0817 ,  H04W56/0025 ,  H04W84/22

Abstract: A mesh network system includes a plurality of network nodes, a network manager, and at least one access point. The network nodes communicate wirelessly with each other and the at least one access point of the mesh network system. The network manager manages operation of a wireless mesh network including the nodes and the at least one access point. The at least one access point communicates wirelessly with the network nodes, and provides a gateway between the wireless mesh network and the network manager. The at least one network access point is operative to synchronize its operation timing to an external clock, such as a UPS or UTC clock. Furthermore, in wireless mesh networks including multiple access points, the access points can synchronize their operation timing to each other, and can provide timing information to other access points and nodes in the network.

Abstract translation: 网状网络系统包括多个网络节点，网络管理器和至少一个接入点。 网络节点与网状网络系统的无线通信和至少一个接入点进行通信。 网络管理器管理包括节点和至少一个接入点的无线网状网络的操作。 所述至少一个接入点与所述网络节点进行无线通信，并且在所述无线网状网络和所述网络管理器之间提供网关。 所述至少一个网络接入点用于使其操作时序与诸如UPS或UTC时钟之类的外部时钟同步。 此外，在包括多个接入点的无线网状网络中，接入点可以将其操作时序彼此同步，并且可以向网络中的其他接入点和节点提供定时信息。

公开(公告)号：US20180316558A1

公开(公告)日：2018-11-01

申请号：US15963987

申请日：2018-04-26

Applicant: Linear Technology Corporation

Inventor： Alain Pierre LEVESQUE ,  Lance Robert DOHERTY ,  David Ramsay Hanson BACHER ,  Sergey AMUR

IPC: H04L12/24 ,  H04W40/02 ,  H04W76/10 ,  H04L12/751

Abstract: In a wireless mesh network having a known or predetermined physical topology, a network node or access point (AP) may promptly begin operation on the network in response to receiving a network advertisement. In particular, the node or AP can store a network communication schedule and adjust the network communication schedule based on parameter value(s) received in the network advertisement received from the network manager. As a result, the node or AP can begin operating in accordance with a network's communication schedule promptly after receiving the network advertisement by transmitting packets using pairs of communication channels and timeslots assigned thereto in the adjusted communication schedule. The network communication schedule stored by the node or AP can take the form of an algorithm that takes the parameter value(s) received in the network advertisement as input(s) and, when executed by the node or AP, outputs the appropriate adjusted network communication schedule.

公开(公告)号：US20160345317A1

公开(公告)日：2016-11-24

申请号：US15160502

申请日：2016-05-20

Applicant: LINEAR TECHNOLOGY CORPORATION

Inventor： Alain Pierre LEVESQUE ,  Lance Robert DOHERTY ,  Jonathan Noah SIMON

IPC: H04W72/04 ,  H04W40/12 ,  H04W40/02 ,  H04W28/06

CPC classification number: H04W40/02 ,  H04W40/12 ,  H04W72/044 ,  H04W84/18 ,  H04W84/22 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/34

Abstract: A wireless mesh network system includes network nodes that operate in blink and canopy modes of operation. In operation, a network manager joins nodes operating in the canopy node to the network and allocates network bandwidth to the canopy nodes. The allocated bandwidth includes a first bandwidth allocated for transmitting and receiving data packets between canopy nodes that are joined to the network, and a second bandwidth allocation for receiving network joining messages from nodes that are not joined to the network. The second bandwidth allocation is also used for receiving data messages from nodes operating in the blink mode. Thus, in response to receiving a message that was transmitted from a blink node to a canopy node using the second bandwidth allocation, the network manager identifies the message as a data message and provides the data from the message to a host application.

Abstract translation: 无线网状网络系统包括以眨眼和遮篷操作模式操作的网络节点。 在运行中，网络管理员将运行于冠层节点的节点加入网络，并将网络带宽分配给冠层节点。 分配的带宽包括分配用于在连接到网络的冠层节点之间发送和接收数据分组的第一带宽和用于从未连接到网络的节点接收来自网络的节点接收网络的第二带宽分配。 第二带宽分配也用于从以闪烁模式运行的节点接收数据消息。 因此，响应于使用第二带宽分配接收从眨眼节点发送到冠层节点的消息，网络管理器将消息标识为数据消息，并将该消息中的数据提供给主机应用。