公开(公告)号：US11979346B2

公开(公告)日：2024-05-07

申请号：US17557903

申请日：2021-12-21

Applicant: Kamstrup A/S

Inventor： Flemming Hald ,  Jeppe Hofni ,  Mathias Rønholt Kielgast ,  Torben Markussen

IPC: H04L5/00 ,  H04W72/0446 ,  H04W72/21

CPC classification number: H04L5/0046 ,  H04L5/0053 ,  H04W72/0446 ,  H04W72/21

Abstract: A wireless communication link management method includes sending data in a primary uplink data frame from the measuring device (7) to the data collection unit (5) via a primary channel. After sending, the measuring device provides a time-limited primary access opportunity (AO) for receiving a link management downlink frame. A primary signal quality is evaluated. A secondary uplink frame is sent from the measuring device via a secondary channel. A time-limited secondary access opportunity for receiving a link management downlink frame is provided. Secondary signal qualities are evaluated. One among the primary access opportunity and the secondary access opportunities is selected for sending a link management downlink frame from the data collection unit to the measuring device depending on the signal qualities. The associated channel is used as the primary channel for sending data in a primary uplink data frame from the measuring device to the data collection unit.