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Method for bidirectionally transmitting data, in particular sensor data, and node with radio function
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A two-way radio, radio technology, used in wireless communication, instruments, electrical components, etc., can solve problems such as consumption, and achieve the effect of saving power, small errors, and saving computing power
Active Publication Date: 2022-03-22
DIEHL METERING SYST
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As a result, the time error then corresponds to the time error of the second clock generator of the consumption meter
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[0035] figure 1 The designation 1 in the designates a two-way radio communication system or radio communication network, which comprises a base station 3 , for example a so-called data collector, and a plurality of independent, autonomously operating nodes 2 . A node 2 is for example any type of sensor device or meter, such as a water, heat, gas or electricity meter, or an actuator. These nodes 2 have in common that they have a communication module 17 with an antenna 8 and a control and computing unit 19 . Furthermore, each node 2 has a first frequency generator 18 for generating a carrier frequency for radio transmission and a second frequency generator 21 for determining the frequency in the uplink The point in time at which the data packets 40-1, 40-n are transmitted and used to determine the reception window for receiving the data packets 50-1, 50-n in the downlink. The first frequency generator 18 is an HF (high frequency) quartz, which typically has an error of the ord...
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Abstract
The invention relates to a method for radio transmission of data, in particular sensor data, between at least one, preferably permanently stationary, battery-operated node (2) and a base station (3) in a communication system (1) operating with bidirectional radio transmission, the base station (3) having a communication module (10) with a first frequency generator (11), the node (2) has a communication module (17) with a first frequency generator (18) and a second frequency generator (21), which has a lower frequency than the frequency of the first frequency generator (18), the communication module (17) of the node (2) being configured to transmit data in the uplink to the communication module (10) of the base station (3), the radio telegrams (40) are divided into at least two data packets, preferably into a plurality of data packets (40-1, 40-n), the individual data packets (40-1, 40-n) are transmitted one after the other at time intervals, and wherein the communication module (10) of the base station (3) is designed to transmit data in the downlink to the communication module (17) of the node (2), and wherein the communication module (17) of the base station (3) is designed to transmit data in the downlink to the communication module (17) of the node (2). The radio telegrams (50) are divided into at least two data packets, preferably into a plurality of data packets (50-1, 50-n), and the individual data packets (50-1, 50-n) are transmitted one after the other at time intervals. In order to solve the problem of improving the reception quality in the downlink, according to the invention, during a transmission time period consisting of a sequence of data packets (40-1, 40-n) and a subsequent sequence of data packets (50-1, 50-n) together with the sum of the time periods that may be located therebetween, the sequence of data packets (40-1, 40-n) and the subsequent sequence of data packets (50-1, 50-n) are transmitted to the downlink. At least two calibrations (KAL1) of the first frequency generator (18) and the second frequency generator (21) of the node (2) are made.
Description
technical field [0001] The invention relates to a method for the radio transmission of data, in particular sensor data, between at least one, preferably permanently installed, battery-operated node and a base station in a communication system with two-way radio transmission operation. Furthermore, the invention relates to a radio-enabled node operable according to the aforementioned method. Background technique [0002] Nodes of communication systems, such as smart consumption meters, are usually assigned to local local locations, such as corresponding dwelling units or residential buildings. The measurement data accumulated there can be read in various ways. The measurement data can be read out, for example, via the mains (power supply line). However, it is not possible here to connect the consumption meter to a network outside the local area. Furthermore, measurement data can be transmitted in the form of data packets or telegrams using mobile radio technology. However...
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