Data Transmission Arrangement, Data Receiver, and Method for the Operation Thereof

Patent metadata

Field	Value
Publication number	US-2016366649-A1
Application number	US-201615245413-A
Country	US
Kind code	A1
Filing date	Aug 24, 2016
Priority date	Feb 26, 2014
Publication date	Dec 15, 2016
Grant date	—

Abstract

A data transmission arrangement includes an energy supplier for supplying the data transmission arrangement with electrical energy; a determiner for determining useful data provided by a sensor element connected to the data transmission arrangement; a coder for channel coding of the useful data so as to obtain channel-coded data; a splitter for splitting up the channel-coded data into a plurality of data packets having a code rate smaller than one; and a transmitter for transmitting data packets which is configured to transmit the plurality of data packets via a communication channel with a time lag, provided that an amount of electrical energy that can be provided by the energy supplier is sufficient for transmitting the respective data packets at a standard transmitting power.

First claim

1 . A data transmission arrangement comprising:
an energy supplier for supplying the data transmission arrangement with electrical energy; a determiner for determining useful data provided by a sensor element connected to the data transmission arrangement; a coder for channel coding of the useful data so as to acquire channel-coded data; a splitter for splitting up the channel-coded data into a plurality of data packets comprising a code rate smaller than one; and a transmitter for transmitting data packets which is configured to transmit the plurality of data packets via a communication channel with a time lag, provided that an amount of electrical energy that can be provided by the energy supplier is sufficient for transmitting the respective data packets at a standard transmitting power, so that there are non-transmission periods in between the data packets during which no transmission is performed; the energy supplier comprising an energy harvesting element for non-line-conducted energy extraction from the environment of the data transmission arrangement; the energy supplier comprising an energy store for storing the energy extracted by the energy harvesting element, the energy store being configured for short, pulse-like load; the transmitter for transmitting data packets being configured to select the time lag with which the data packets are transmitted such that the energy store of the energy supplier is subjected to a short, pulse-like load; the transmitter for transmitting data packets being configured to either
transmit a data packet, which is about to be transmitted, of the plurality of data packets at a reduced transmitting power if an amount of electrical energy that can be provided by the energy supplier is sufficient for transmitting the respective data packet at the reduced transmitting power, the reduced transmitting power being reduced by a maximum of 40 dB as compared to the standard transmitting power; or
not transmit or to transmit with delay a data packet, which is about to be transmitted, of the plurality of data packets if an amount of electrical energy that can be provided by the energy supplier is not sufficient for transmitting the respective data packet.

2 . The data transmission arrangement as claimed in claim 1 , wherein the energy harvesting element is configured to convert deformation energy, kinetic energy, thermal energy, electromagnetic energy or light energy to electrical energy in order to produce energy.

3 . The data transmission arrangement as claimed in claim 1 , the splitter for splitting up the channel-coded data being configured to provide at least two data packets of the plurality of data packets with a pilot sequence in each case for synchronizing the data packets in a data receiver, the splitter for splitting up the channel-coded data into a plurality of data packets being configured to vary an arrangement of the pilot sequences in the at least two data packets such that one data packet of the at least two data packets comprises an arrangement of the pilot sequence which deviates from the arrangement of the pilot sequence of another data packet of the at least two data packets.

4 . The data transmission arrangement as claimed in claim 1 , wherein the plurality of data packets each comprise a length of 20 symbols or less.

5 . A data receiver comprising:
a receiver for receiving data packets, the data packets each comprising a code rate smaller than one and being transmitted via a communication channel with a time lag, so that there are non-transmission periods in between the data packets during which no transmission is performed, the receiver for receiving data packets being configured to determine the data packets within a receive data stream; the receiver for receiving data packets being configured to measure a receive power of the receive data stream during reception of the respective data packets and during the non-transmission periods prior to reception of the respective data packets and/or following reception of the respective data packets, so as to determine a change in the receive power of the receive data stream; the receiver for receiving data packets being configured to weight, for further processing, each of the data packets on the basis of the determined change in the receive power so as to acquire received data packets; processor for further processing the received data packets, configured to perform channel decoding of the received data packets which is dependent on the weighting of the received data packets, so as to acquire useful data comprised by the data packets.

6 . The data receiver as claimed in claim 5 , wherein the processor for further processing of the received data packets is configured to take greater account, in the channel decoding, of data packets comprising a higher weighting than of data packets comprising a lower weighting.

7 . The data receiver as claimed in claim 5 , wherein the receiver for receiving data packets is configured to further process those data packets of the data packets as received data packets whose determined change in the receive power exceeds a threshold value selected such that the corresponding data packets are suitable for decoding; and
wherein the receiver for receiving data packets is configured to discard those data packets of the data packets whose determined change in the receive power is smaller than or equal to the threshold value.

8 . The data receiver as claimed in claim 4 , wherein the receiver for receiving data packets is configured to determine, by means of the determined change in the receive power, whether or not a data packet has been transmitted; and/or wherein the receiver for receiving data packets is configured to determine, by means of the determined change in the receive power, whether or not a transmitted data packet has been superimposed by an interferer.

9 . The data receiver as claimed in claim 5 , wherein each of the data packets is provided with a pilot sequence for synchronizing the respective data packet within the data receiver, wherein the receiver for receiving data packets is configured to locate the data packets within the receive data stream on the basis of the pilot sequences so as to determine the data packets within the receive data stream.

10 . The data receiver as claimed in claim 9 , wherein the processor for further processing the received data packets is configured to adapt the weighting of the received data packets for channel decoding on the basis of the pilot sequences of the received data packets.

11 . A system comprising:
a data transmission arrangement as claimed in claim 1 ; and a data receiver comprising:
a receiver for receiving data packets, the data packets each comprising a code rate smaller than one and being transmitted via a communication channel with a time lag, so that there are non-transmission periods in between the data packets during which no transmission is performed,
the receiver for receiving data packets being configured to determine the data packets within a receive data stream;
the receiver for receiving data packets being configured to measure a receive power of the receive data stream during reception of the respective data packets and during the non-transmission periods prior to reception of the respective data packets and/or following reception of the respective data packets, so as to determine a change in the receive power of the receive data stream
the receiver for receiving data packets being configured to weight, for further processing, each of the data packets on the basis of the determined change in the receive power so as to acquire received data packets;
processor for further processing the

Assignees

• Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E V

Inventors

• Bernhard Josef
• Kilian Gerd

Classifications

• H04W52/0277 Primary

  according to available power supply, e.g. switching off when a low battery condition is detected · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L69/22

  Parsing or analysis of headers · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W28/0221

  power availability or consumption · CPC title