Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Friedrich-Alexander-Universitat Erlangen-Nürnberg

Diehl Metering Gmbh

Diehl Metering Systems Gmbh

Johannes Wechsler

Josef Bernhard

Gerd Kilian

Jakob Kneissl

Dominik Soller

Frank Obernosterer

Raimund Meyer

Joerg Robert

Stefan Ereth

Michael Schlicht

Thomas Kauppert

Hristo Petkov

Jörg Robert

Jakob Kneißl

Klaus Gottschalk

Raphael Mzyk

Albert Heuberger

Wolfgang Koch

Jakob KNEIßL

Frank Nachtrab

Marco Breiling

Wolfram Strauss

Eberhard Gamm

Rafael Psiuk

Guenter Rohmer

Maximilian Roth

Robert Koch

Karol Bieg

Alexej Jarresch

Günter Rohmer

Jacob Kineissl

The innovation relates to technologies by which the signal characteristics and, hence, environmental conditions of a transmitter can be concealed. In one aspect, a data transmitter comprises a transmitter and a changer, wherein the transmitter is configured to transmit a signal, wherein at least one signal parameter of the signal depends on at least one environmental parameter in an environment of the data transmitter, wherein the changer is configured to change the at least one signal parameter of the signal or a parameter on which the at least one signal parameter of the signal depends, in order to conceal the at least one environmental parameter.

Concealment of environmental influences on the transmitting parameters

Embodiments of the present invention provide a participant of a communication system, wherein the communication system communicates wirelessly in a frequency used by a plurality of communication systems, wherein the participant is configured to transmit data uncoordinatedly with respect to other participants and/or a base station of the communication system, wherein the participant is configured to receive a synchronization data packet of a point-to-multipoint data transfer of the base station of the communication system, wherein the synchronization data packet is transferred in a frequency range of the frequency band of the communication system that is specified or known to the participant, wherein the participant is configured to receive, on the basis of the synchronization data packet, a payload data packet of the point-to-multipoint data transfer that is referenced in time and/or frequency to the synchronization data packet.

Method for coordinating participants in sensor networks

Embodiments of the present invention provide a participant of a communication system, wherein the communication system communicates wirelessly in a frequency used by a plurality of communication systems, wherein the participant is configured to transmit data uncoordinatedly with respect to other participants and/or a base station of the communication system, wherein the participant is configured to receive, temporally synchronized to a transmitted uplink data transfer to the base station of the communication system, a downlink data transfer from the base station, wherein the downlink data transfer includes signaling information, wherein the participant is configured to receive a point-to-multipoint data transfer from the base station on the basis of the signaling information.

Signaling of a multicast message in non-coordinated networks

Embodiments provide a controller for a participant of a communication system wirelessly communicates in a frequency band used for communication by a plurality of communication systems, wherein the controller is configured to identify a network-specific channel access pattern, wherein the network-specific channel access pattern indicates a frequency hop-based and/or time hop-based occupancy of resources of the frequency band that is usable for the communication of the communication system, wherein the controller is configured to identify a relative channel access pattern, wherein the relative channel access pattern indicates, from the usable frequency hop-based and/or time hop-based occupancy of resources of the network-specific channel access pattern, an occupancy of resources that is to be used for the transfer of data of the participant.

Channel access via hierarchically organized channel access patterns

Embodiments provide transfer methods. The method includes a step of transferring data of a first class from a data transmitter to a data receiver, wherein the data of the first class is transferred divided onto a first plurality of sub-data packets using a first hopping pattern. Furthermore, the method includes a step of transferring data of a second class from the data transmitter or a different data transmitter to the data receiver, wherein the data of the second class is transferred divided onto a second plurality of sub-data packets using a second hopping pattern, wherein transmission pauses between sub-data packets transferred according to the first hopping pattern are smaller than transmission pauses between sub-data packets transferred according to the second hopping pattern.

Data transmitter and data receiver with low latency for the telegram splitting transfer method

Embodiments provide a method for generating a hopping pattern for transmitting a plurality of sub-data packets in a communication system. The method has a step of deriving a hopping pattern from a binary sequence, wherein an autocorrelation function of the binary sequence has autocorrelation side maximums with a predetermined maximum value. The method further has a step of determining a maximum sub-data packet length for the plurality of sub-data packets in dependence on a total emission duration of the plurality of sub-data packets indicated by the hopping pattern, and a minimum value of a difference sequence of a sorted difference number series derived from the binary sequence.

Unipolar binary sequences with improved non-periodic correlation behavior for unsynchronized TSMA systems

Embodiments provide a terminal point of a communication system, wherein a control signal is emitted in the communication system for coordinating the participants of the communication system, wherein the control signal is transferred distributed in correspondence with a frequency hop-based occupancy of resources of the frequency band, indicated by a control signal hopping pattern, wherein the terminal point has a receiver, wherein a receive bandwidth of the receiver is smaller at least by the factor 3 than a bandwidth of the frequency hop-based occupancy of resources of the frequency band, indicated by the control signal hopping pattern, wherein the terminal point is configured to receive a reference signal, the reference signal having information on the control signal, wherein the terminal point is configured to receive the control signal based on the information on the control signal.

Synchronization beacon

Embodiments provide a base station of an uncoordinated wireless communication system, wherein the communication system is configured to communicate in a radio band used by a plurality of communication systems, wherein the base station is configured to receive an uplink transmission from an end point of the wireless communication system, wherein the base station is configured to transmit, in response to the reception of the uplink transmission, a downlink transmission to the end point in a downlink transmission window, wherein the downlink transmission window is synchronized in time to the uplink transmission, wherein the base station is configured, in case of an expected collision of the downlink transmission with another transmission, to reposition the downlink transmission in time and/or frequency within the downlink transmission window, in order to avoid a collision of the downlink transmission with the other transmission.

Bidirectional scheduling in low-power wide-area networks

In embodiments, instead of a uniform (global) hopping pattern that is used equally by all data transmitters and data receivers of a communication system, data transmitters and the data receiver use an individual hopping pattern for the communication. This individual hopping pattern may depend on an operation and is therefore only used by the data transmitter and the data receiver themselves or by a small group of data transmitters and/or data receivers, which may significantly increase the interference immunity.

Specific hopping patterns for telegram splitting

Proposed is a controller for a participant of a communication system, wherein the communication system wirelessly communicates in a frequency band that is used for communication by a plurality of communication systems, wherein the controller is configured to identify a channel access pattern, wherein the channel access pattern indicates a frequency hop-based and/or time hop-based occupancy of the frequency band that is usable for the communication of the communication system, wherein the controller is configured to identify the channel access pattern as a function of individual information of the communication system and as a function of a state of a numerical sequence generator for generating a numerical sequence or a number of a numerical sequence.

Generation of channel access patterns for mutually uncoordinated networks

A transmitter is configured to communicate with a multiplicity of receivers, and is configured to transmit first data, the first data including a non-unique addressing information addressing a subset of the multiplicity of receivers, the subset including at least two receivers, the transmitter further being configured to transmit second data, the second data including a further addressing information or transmitted according to a further addressing information, the addressing information addressing one receiver (or one group of receivers) of the subset of the multiplicity of receivers.

Efficient and dynamic addressing methods to a plurality of receivers

Embodiments provide a transmission method for wireless transmission of data within a communication system. The method includes a step of transmitting the data in a manner that is time-synchronized with a reference signal while using a frequency hopping pattern and/or time hopping pattern.

Optimized combination of preamble and data fields for sensor networks having low electricity consumption on the basis of the telegram splitting method

Embodiments provide a transfer method for transferring data of variable length using a fixedly specified number of sub-data packets to which the data of variable length is distributed.

Variable sub-packet lengths for telegram splitting in networks with low power consumption

Embodiments provide a transfer method for wirelessly transferring data in a communication system (e.g. a sensor network or telemetry system). The data includes core data and extension data, wherein the core data is encoded and distributed in an interleaved manner to a plurality of core sub-data packets, wherein the extension data is encoded and distributed in an interleaved manner to a plurality of extension sub-data packets, wherein at least a part of the core data contained in the core sub-data packets is needed for receiving the extension data or extension data packets.

Interleaving for the transfer of telegrams with a variable number of sub-packets and successive decoding

A data receiver receives at least one signal from a data transmitter and determines therefrom at least one environment parameter of the data transmitter or of an environment of the data transmitter. The data receiver is configured to identify an operational state of the data transmitter or of a component of the data transmitter by comparing the at least one environment parameter so received or an environment parameter profile determined on the basis of the at least one environment parameter, with an environment parameter reference profile which describes an expected environment parameter or an expected environment parameter profile in the environment of the data transmitter.

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Spalt, Germany

Johannes Wechsler