Closed-loop transmission rate control

Patent metadata

Field	Value
Publication number	US-10880775-B2
Application number	US-201916412116-A
Country	US
Kind code	B2
Filing date	May 14, 2019
Priority date	May 14, 2019
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

Transmitting a signal from a transmitter. A method includes identifying a threshold spectral flux density for a given physical location. The method further includes, as a result of identifying the threshold spectral flux density, transmitting a signal at a power level causing the signal to be below the spectral flux density at the given physical location, the signal being transmitted at a data rate. The method further includes receiving feedback from a receiver indicating the signal-to-noise ratio of the signal at the receiver. The method further includes adjusting the data rate of the signal based on the feedback. The method further includes continuing transmitting the signal at the adjusted data rate and power level.

First claim

What is claimed is:

1. A method of transmitting a signal from a transmitter to an intended receiver, the method comprising:
identifying a threshold spectral flux density for a given physical location, remote from the transmitter and the intended receiver, and associated with an adversarial entity;
as a result of identifying the threshold spectral flux density, transmitting a signal at a power level causing the signal to be below the spectral flux density at the given physical location, the signal being transmitted at a data rate;
receiving feedback from a receiver indicating the signal-to-noise ratio of the signal at the receiver;
adjusting the data rate of the signal based on the feedback; and
continuing transmitting the signal at the adjusted data rate and power level so as to cause the signal to remain below the threshold spectral flux density at the physical location.

2. The method of claim 1 , wherein the feedback is used to determine that signal-to-noise ratio should be increased, and wherein adjusting the data rate of the signal comprises lowering the data rate of the signal.

3. The method of claim 1 , wherein the feedback is used to determine that signal-to-noise ratio should be decreased, and wherein adjusting the data rate of the signal comprises raising the data rate of the signal.

4. The method of claim 1 , further comprising:
determining that the transmitter has moved closer to the given physical location; and
as a result, lowering the power level, causing the signal to remain below the spectral flux density at the given physical location.

5. The method of claim 1 , further comprising:
determining that the transmitter has moved further away from the given physical location; and
as a result, limiting an amount the power level is raised to cause the signal to remain below the spectral flux density at the given physical location.

6. The method of claim 1 , further comprising:
identifying a quality of service requirement for the receiver;
determining that the quality of service experienced by the receiver for the signal is above the quality of service requirement; and
as a result, lowering the power level of the signal causing the quality of service experienced by the receiver for the signal to move toward the quality of service requirement while still causing the quality of service experienced by the receiver to be above the quality of service requirement.

7. The method of claim 1 , further comprising:
receiving feedback from a plurality of receivers, the feedback from each receiver in the plurality of receivers indicating the signal-to-noise ratio of the signal at that receiver; and
wherein adjusting the data rate of the signal based on the feedback comprises adjusting the data rate to meet signal-to-noise ratio requirements for a receiver in the plurality of receivers experiencing the lowest signal-to-noise ratio, such that each of the receivers in the plurality of receivers receive the signal at a minimum required signal-to-noise ratio.

8. The method of claim 1 , further comprising:
receiving feedback from a plurality of receivers, the feedback from each receiver in the plurality of receivers indicating the signal-to-noise ratio of the signal at that receiver; and
wherein adjusting the data rate of the signal based on the feedback comprises adjusting the data rate to meet signal-to-noise ratio requirements for a receiver having higher priority than other lower priority receivers in the plurality of receivers such that the higher priority receiver receives the signal at a minimum required signal-to-noise ratio while one or more of the other lower priority receivers do not receive the signal at a minimum required signal-to-noise ratio.

9. A system comprising:
one or more processors; and
one or more computer-readable media having stored thereon instructions that are executable by the one or more processors to configure the system to transmit a signal from a transmitter to an intended receiver, including instructions that are executable to configure the system to perform at least the following:
identifying a threshold spectral flux density for a given physical location, remote from the transmitter and the intended receiver, and associated with an adversarial entity;
as a result of identifying the threshold spectral flux density, transmitting a signal at a power level causing the signal to be below the spectral flux density at the given physical location, the signal being transmitted at a data rate;
receiving feedback from a receiver indicating the signal-to-noise ratio of the signal at the receiver;
adjusting the data rate of the signal based on the feedback; and
continuing transmitting the signal at the adjusted data rate and power level so as to cause the signal to remain below the threshold spectral flux density at the physical location.

10. The system of claim 9 , wherein the feedback is used to determine that signal-to-noise ratio should be increased, and wherein adjusting the data rate of the signal comprises lowering the data rate of the signal.

11. The system of claim 9 , wherein the feedback is used to determine that signal-to-noise ratio should be decreased, and wherein adjusting the data rate of the signal comprises raising the data rate of the signal.

12. The system of claim 9 , wherein the one or more computer-readable media further have stored thereon instructions that are executable by the one or more processors to configure the system to perform at least the following:
determining that the transmitter has moved closer to the given physical location; and
as a result, lowering the power level, causing the signal to remain below the spectral flux density at the given physical location.

13. The system of claim 9 , wherein the one or more computer-readable media further have stored thereon instructions that are executable by the one or more processors to configure the system to perform at least the following:
determining that the transmitter has moved further away from the given physical location; and
as a result, limiting an amount the power level is raised to cause the signal to remain below the spectral flux density at the given physical location.

14. The system of claim 9 , wherein the one or more computer-readable media further have stored thereon instructions that are executable by the one or more processors to configure the system to perform at least the following:
identifying a quality of service requirement for the receiver;
determining that the quality of service experienced by the receiver for the signal is above the quality of service requirement; and
as a result, lowering the power level of the signal causing the quality of service experienced by the receiver for the signal to move toward the quality of service requirement while still causing the quality of service experienced by the receiver to be above the quality of service requirement.

15. The system of claim 9 , wherein the one or more computer-readable media further have stored thereon instructions that are executable by the one or more processors to configure the system to perform at least the following:
receiving feedback from a plurality of receivers, the feedback from each receiver in the plurality of receivers indicating the signal-to-noise ratio of the signal at that receiver; and
wherein adjusting the data rate of the signal based on the feedback comprises adjusting the data rate to meet signal-to-noise ratio requirements for a receiver in the plurality of receivers experiencing the lowest signal-to-noise ratio, such that each of the receivers in the plurality of receivers receiv

Assignees

• L3 Tech Inc
• L3Harris Technologies Inc

Inventors

• Giallorenzi Thomas R
• Kingston Samuel C
• Yaskoff Nicholas T
• Zarubica Radivoje
• Hall Eric K

Classifications

• H04W52/283

  Power depending on the position of the mobile · CPC title

• H04W52/267

  taking into account the information rate · CPC title

• H04W52/241

  taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo · CPC title

• H04W28/10

  Flow control {between communication endpoints} · CPC title

• H04W28/06 Primary

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title