公开(公告)号：US20230388037A1

公开(公告)日：2023-11-30

申请号：US18446115

申请日：2023-08-08

Applicant: ITRON, INC.

Inventor： Thomas F. UHLING ,  Keith Wayne BARNES ,  Howard Neal BRACE ,  Imad JAMIL

IPC: H04J3/06 ,  H04L43/087 ,  H04L43/106

CPC classification number: H04J3/0667 ,  H04J3/0602 ,  H04L43/106 ,  H04L43/087 ,  H04J3/0626

Abstract: Techniques for performing time synchronization within a network include a method comprising: determining, by a first node, a receive time at which a periodic beacon from a second node is expected to be received based on timing information associated with the second node; determining, by the first node, a first listening window for the periodic beacon based on the receive time and one or more of a drift uncertainty associated with an anticipated drift in a correction of a timing error between the first node and the second node or a jitter uncertainty associated with timing jitter in the first node or the second node; and listening, by the first node, for the periodic beacon during the first listening window.

公开(公告)号：US20230156582A1

公开(公告)日：2023-05-18

申请号：US17527051

申请日：2021-11-15

Applicant: ITRON, INC.

Inventor： Fabrice MONIER ,  Jerome BARTIER ,  Yacine KHALED ,  Imad JAMIL ,  Khalid MAALLEM ,  Samuel DE VALS

IPC: H04W48/00 ,  H04W48/10 ,  H04B1/7183 ,  H04B1/7143 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W48/17 ,  H04W48/10 ,  H04B1/7183 ,  H04B1/7143 ,  H04W72/0446 ,  H04L5/0005

Abstract: Various embodiments disclose a method that includes: attempting to detect, with a first transceiver associated with a first node, a network discovery signal, wherein the attempting is performed according to (a) a first listening schedule associated with a first physical layer mode and (b) a second listening schedule associated with a second physical layer mode; detecting, with the first transceiver, the network discovery signal during a slot associated with the first listening schedule; and in response to detecting the network discovery signal, establishing, with the first node, a connection between the first node and the second node using the first physical layer mode.

公开(公告)号：US20220377793A1

公开(公告)日：2022-11-24

申请号：US17325878

申请日：2021-05-20

Applicant: ITRON, INC.

Inventor： Thomas F. UHLING ,  Keith Wayne BARNES ,  Howard Neal BRACE ,  Imad JAMIL

IPC: H04W74/08 ,  H04W40/24 ,  H04W56/00 ,  H04W72/12 ,  H04W72/04

Abstract: One embodiment of the present invention sets forth a technique for performing time synchronization within a network. The technique includes detecting a first scheduling conflict between a first transmission time associated with a first periodic beacon from a first node in the network and a first listening window associated with receiving a second periodic beacon from a second node in the network. The technique also includes determining a first alternate transmission time for the second periodic beacon based on a second transmission time associated with the second periodic beacon and a position of the second node in the network and calculating a second listening window associated with transmission of the second periodic beacon from the second node at the first alternate transmission time. The technique further includes listening for the second periodic beacon during the second listening window.

公开(公告)号：US20220377753A1

公开(公告)日：2022-11-24

申请号：US17325868

申请日：2021-05-20

Applicant: ITRON, INC.

Inventor： Thomas F. UHLING ,  Keith Wayne BARNES ,  Howard Neal BRACE ,  Imad JAMIL

IPC: H04W72/12

Abstract: One embodiment of the present invention sets forth a technique for performing time synchronization within a network. The technique includes detecting a first scheduling conflict between a first transmission time associated with a first periodic beacon from a first node in the network and a second transmission time associated with a second periodic beacon from a second node in the network. The technique also includes determining a first alternate transmission time associated with the first periodic beacon based on a position of the first node in the network and the first transmission time. The technique further includes transmitting the first periodic beacon at the first transmission time, and transmitting an alternate periodic beacon at the first alternate transmission time.

公开(公告)号：US20200007269A1

公开(公告)日：2020-01-02

申请号：US16024577

申请日：2018-06-29

Applicant: ITRON, INC.

Inventor： Thomas UHLING ,  Imad JAMIL ,  Fabrice MONIER ,  Keith Wayne BARNES

IPC: H04L1/00 ,  H04W84/18 ,  H04W12/06 ,  H04L12/26

Abstract: A wireless mesh network includes a plurality of nodes coupled together in parent-child relationships. A child node is configured to cascade listening rate changes upstream to a parent node to perform low-latency communications. The child node transmits an authentication message to the parent node indicating the listening rate change. The child node sets a timer and waits for an acknowledgement from the parent node. If the child node receives the acknowledgement, then the child node and the parent node change listening rate to permit low-latency communications. In addition, if the parent node loses network access, the parent node sets a timer and then waits to abandon the child node until after the timer elapses.