Transmitter and receiver and corresponding methods

Patent metadata

Field	Value
Publication number	US-11368186-B2
Application number	US-201916598653-A
Country	US
Kind code	B2
Filing date	Oct 10, 2019
Priority date	Apr 11, 2017
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

The invention refers to a transmitter that emits data in the form of a group of at least two partial telegrams that together include the data and that are shorter than an individual telegram comprising the data. The transmitter emits the group of partial telegrams according to a hopping pattern that refers to times and/or transmission frequencies of the emission of the individual partial telegrams. Furthermore, the transmitter emits the group of partial telegrams several times and at least twice. Furthermore, the invention relates to a receiver and corresponding methods.

First claim

The invention claimed is:

1. A transmitter,
wherein the transmitter comprises a transmitter device configured to emits data in the form of a group of at least two partial packets that together comprise the data and that are shorter than an individual data packet comprising the data,
wherein the transmitter device is configured to emits the group of the partial packets according to a hopping pattern that refers to times and/or transmission frequencies of the emission of the individual partial packets,
wherein the transmitter device is configured to emits the group of the partial packets at least twice,
wherein, for an emission of the group of the partial packets following a preceding emission, the transmitter device randomly offsets all hops of the hopping pattern used for the preceding emission in time and/or frequency by the same time and/or frequency offset,
wherein the transmitter device is configured to perform at least two emissions of the group of the partial packets in an interleaved manner, which is done by the transmitter device emitting, during a pause between two partial packets of the one emission of the two emissions, a partial packet of the other emission of the two emissions.

2. The transmitter according to claim 1 ,
wherein the transmitter uses different hopping patterns for each of the at least two emissions of the group of the partial packets.

3. The transmitter according to claim 2 ,
wherein, for a selection of the hopping patterns, the transmitter accesses a stored set of reference hopping patterns.

4. The transmitter according to claim 3 ,
wherein, for an emission of the group of the partial packets, the transmitter randomly selects a hopping pattern from the set of reference hopping patterns.

5. The transmitter according to claim 2 ,
wherein, for an emission of the group of the partial packets, the transmitter generates a hopping pattern through a generation scheme depending on a randomly selected parameter.

6. The transmitter according to claim 2 ,
wherein, for an emission of the group of the partial packets following a preceding emission, the transmitter generates a hopping pattern by means of a random and/or discrete offset of the times and/or the frequencies of the hopping pattern used for the preceding emission.

7. The transmitter according to claim 2 ,
wherein, for an emission of the group of the partial packets, the transmitter generates a hopping pattern by means of a random and/or discrete offset of the times and/or the frequencies of a hopping pattern randomly selected from the set of reference hopping patterns.

8. The transmitter according to claim 6 ,
wherein the transmitter generates the hopping pattern by means of a discrete offset of the times relative to a temporal length of a partial packet and/or a discrete offset of the frequencies relative to a channel bandwidth used for the emission.

9. The transmitter according to claim 1 ,
wherein the transmitter randomly determines within which pause of the one emission the transmitter emits a first partial packet of the group of the partial packets of the other emission.

10. The transmitter according to claim 1 ,
wherein the transmitter uses the same hopping pattern in the at least two interleaved emissions.

11. The transmitter according to claim 1 ,
wherein, in one of the at least two interleaved emissions, the transmitter uses the hopping pattern of the other one of the at least two interleaved emissions with a random and/or discrete offset of the times and/or frequencies.

12. The transmitter according to claim 11 ,
wherein the transmitter generates the hopping pattern by means of a discrete offset of the times relative to a temporal length of a partial telegram and/or a discrete offset of the frequencies relative to a channel bandwidth used for the emission.

13. The transmitter according to claim 1 ,
wherein the transmitter inserts, into the transmitted partial packets and/or into payload data of the partial packets and/or into data that are derived from the payload data of the partial packets, data with respect to the hopping pattern used and/or with respect to a change of the hopping pattern used in contrast to a preceding or a following hopping pattern and/or with respect to a parameter determining the selection and/or design of the hopping pattern used.

14. The transmitter according to claim 1 ,
wherein, in the multiple emissions of the group of the partial packets, the transmitter uses different transmission frequency bands, respectively.

15. The transmitter according to claim 14 ,
wherein the transmission frequency bands overlap.

16. A method for emitting data, the method comprising:
emitting data in the form of a group of at least two partial packets that together comprise the data and that are shorter than an individual data packet comprising the data,
wherein the group of the partial packets is emitted according to a hopping pattern that refers to times and/or transmission frequencies of the emission of the individual partial packets, and
wherein the group of the partial packets is emitted at least twice,
wherein, for an emission of the group of the partial packets following a preceding emission, all hops of the hopping pattern used for the preceding emission are randomly offset in time and/or frequency by the same time and/or frequency offset, wherein at least two emissions of the group of the partial packets are performed in an interleaved manner, which is done by emitting, during a pause between two partial packets of the one emission of the two emissions, a partial packet of the other emission of the two emissions.

17. A receiver,
wherein the receiver comprises a receiver device configured to receives from a transmitter partial telegrams that together comprise data and that are shorter than an individual data packet comprising the data, and
wherein the receiver device is configured to identify at least one hopping pattern used by the transmitter when emitting the partial packets, the hopping pattern referring to times and/or transmission frequencies of the emission of the individual partial packets,
wherein the group of partial packets is emitted by the transmitter at least twice,
wherein, for an emission of the group of the partial packets following a preceding emission, all hops of the hopping pattern used for the preceding emission are randomly offset in time and/or frequency by the same time and/or frequency offset, wherein at least two emissions of the group of the partial packets are performed in an interleaved manner, such that during a pause between two partial packets of the one emission of the two emissions, a partial packet of the other emission of the two emissions is received.

18. The receiver according to claim 17 ,
wherein, for the identification of the hopping pattern, the receiver accesses a stored set of reference hopping patterns.

19. The receiver according to claim 17 ,
wherein the receiver takes a previously identified hopping pattern as the starting point for the identification of the hopping pattern.

20. The receiver according to claim 17 ,
wherein the receiver determines, starting from the received partial packets of an emission of a group of partial packets, at least one change of a hopping pattern of a preceding emission of the group of partial packets.

21. The receiver according to claim 17 ,
wherein the receiver divides the received partial packets and assigns them to different emissions of a group of partial packets.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Kilian Gerd
• Bernhard Josef
• Strauss Wolfram
• Kneissl Jakob
• Wechsler Johannes

Classifications

• H04L1/0045

  Arrangements at the receiver end · CPC title

• H04L5/0012

  Hopping in multicarrier systems · CPC title

• H04L1/08

  by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} · CPC title

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04B1/7143 Primary

  Arrangements for generation of hop patterns · CPC title