Telegram splitting transmission method for bidirectional networks

Patent metadata

Field	Value
Publication number	US-11258722-B2
Application number	US-201816138775-A
Country	US
Kind code	B2
Filing date	Sep 21, 2018
Priority date	Mar 24, 2016
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A data transmitter is provided, having: a generator for generating transmission data packets, configured to split a first data packet into at least three transmission data packets, each of the transmission packets being shorter than the first data packet, the generator being configured to channel-encode the at least three transmission packets such that only a portion thereof is required for decoding the first data packet; a transmission element for transmitting data packets, configured to transmit the at least three transmission packets in a frequency channel via a communications channel with a time gap; a monitor element for monitoring the frequency channel, configured to recognize an interference or transmission of a further data transmitter in the frequency channel; the transmission element being configured not to transmit via the communications channel a packet, waiting for transmission, of the at least three transmission packets if an interference or transmission from a further data transmitter is recognized by the monitor element at the time of transmitting the transmission data packet.

First claim

The invention claimed is:

1. A data transmitter of a wireless sensor network, the data transmitter comprising:
a generator for generating transmission data packets, configured to split a first data packet into at least three transmission data packets, wherein each of the at least three transmission data packets is shorter than the first data packet, the generator for generating data packets being configured to channel-encode the at least three transmission data packets such that only a portion of the transmission data packets is required for decoding the first data packet;
a transmission element for transmitting data packets, configured to transmit the at least three transmission data packets in a frequency channel via a communications channel with a time gap;
a monitor element for monitoring the frequency channel, configured to recognize an interference or transmission of a further data transmitter in the frequency channel;
wherein the transmission element for transmitting data packets is configured not to transmit, transmit only partly or at a later time via the communications channel a transmission data packet, waiting for transmission, of the at least three transmission data packets if an interference or transmission from a further data transmitter is recognized by the monitor element for monitoring the frequency channel at the time of transmitting the transmission data packet,
wherein the wireless sensor network comprises a base station and a plurality of sensor nodes,
wherein the transmitter is the base station or one of the plurality of sensor nodes.

2. The data transmitter in accordance with claim 1 , wherein the monitor element for monitoring the frequency channel is configured to perform power detection in the frequency channel in order to recognize the interference or transmission of the further data transmitter in the frequency channel.

3. The data transmitter in accordance with claim 1 , wherein the monitor element for monitoring the frequency channel is configured to predict the interference or transmission of the further data transmitter in the frequency channel based on a previous interference or previous transmission of the further data transmitter;
or wherein the monitor element for monitoring the frequency channel is configured to predict the interference or transmission of the further data transmitter in the frequency channel based on the interference or transmission of the further data transmitter in a frequency channel adjacent to the frequency channel.

4. The data transmitter in accordance with claim 1 , wherein the transmission element for transmitting data packets is configured to adjust the time gap between the transmission data packets in dependence on the recognized interference or transmission of the further data transmitter.

5. The data transmitter in accordance with claim 1 , wherein the transmission element for transmitting data packets is configured to transmit a first transmission data packet destined for the first data receiver in a first frequency channel and to transmit a second transmission data packet destined for the second data receiver in a second frequency channel.

6. The data transmitter in accordance with claim 1 , wherein the transmission element for transmitting data packets is configured to distribute the transmission packets over at least two frequency channels.

7. The data transmitter in accordance with claim 1 , wherein the data transmitter is configured to emit, using a further transmission data packet, the transmission time of at least one of the transmission data packets or at least a time gap between two of the transmission data packets.

8. The data transmitter in accordance with claim 1 , the data transmitter being configured to predetermine, using a further transmission data packet, to a further data transmitter a transmission time when the further data transmitter emits a transmission data packet or a time gap between two transmission data packets emitted by the further data transmitter.

9. The data transmitter in accordance with claim 1 , wherein the transmission element for transmitting data packets is configured to adjust the time gap between the transmission data packets or non-transmitting a transmission data packet in dependence on a quality or occupation of the communications channel.

10. The data transmitter in accordance with claim 1 , wherein the data transmitter is a data transceiver further comprising:
a receive element for receiving data packets, configured to receive a data packet from the first data receiver and to determine a receive power or receive quality;
wherein the data transmitter is configured to adjust a transmit power with which the transmission data packets are transmitted to the first data receiver in dependence on the determined receive power or receive quality.

11. A system comprising:
at least one data transmitter in accordance with claim 1 ; and
at least one data receiver, the data receiver comprising:
a receive element for receiving data packets, configured to receive at least three transmission data packets from a first data transmitter, which are transmitted via a communications channel with a time gap and each comprise part of a first data packet, the receive element for receiving data packets being configured to combine the at least three transmission data packets in order to acquire the first data packet;
wherein the at least three transmission data packets are channel-encoded such that only a portion of the at least three transmission data packets is required for decoding;
wherein the receive element for receiving data packets is configured to receive, combine and decode at least two of the at least three transmission data packets in order to acquire the first data packet.

12. A method for operating a transmitter of a wireless sensor network, wherein the wireless sensor network comprises a base station and a plurality of sensor nodes, wherein the transmitter is the base station or one of the plurality of sensor nodes, wherein the method comprises:
generating at least three transmission data packets by splitting a first data packet destined for a first data receiver into the at least three transmission data packets, wherein each of the at least three transmission data packets is shorter than the first data packets, wherein, when generating the at least three transmission data packets, the at least three transmission data packets are channel-encoded such that only a portion of the transmission data packets is required for decoding the first data packet;
transmitting the at least three transmission data packets in a frequency channel via a communications channel with a time gap;
monitoring the frequency channel in order to recognize an interference or transmission of a further data transmitter in the frequency channel;
wherein the transmission element for transmitting data packets is configured not to transmit, transmit only partly or at a later time via the communications channel a transmission data packet, waiting for transmission, of the at least three transmission data packets if an interference or transmission from a further data transmitter is recognized by the monitor element for monitoring the frequency channel at the time of transmitting the transmission data packet;
wherein, when transmitting the at least three transmission data packets, a transmission data packet, waiting for transmission, of the at least three transmission data packets is not transmitted, transmitted only partly or at a later time if an interference or transmission from a further data transmitter is recognized by monitoring the frequency channel at the time of transmitting the transmission data pac

Assignees

• Fraunhofer Ges Forschung
• Univ Friedrich Alexander Er
• Friedrich Alexander Univ Erlangen Neurnberg

Inventors

• Bernhard Josef
• Wechsler Johannes
• Kilian Gerd
• Kneissl Jakob
• Robert Jörg
• Heuberger Albert

Classifications

• H04L1/0041 Primary

  Arrangements at the transmitter end · CPC title

• H04B1/7143

  Arrangements for generation of hop patterns · CPC title

• H04L69/22

  Parsing or analysis of headers · CPC title

• H04L1/0071

  Use of interleaving (interleaving per se H03M13/27) · CPC title

• H04B2201/71307

  Partial band interference · CPC title