Efficient spectrum allocation system and method

• US 10,051,606 B1
• Filed: 09/03/2015
• Issued: 08/14/2018
• Est. Priority Date: 09/03/2015
• Status: Active Grant

• Current Assignee: Rockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Rockwell Collins, Inc. (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Nelson, Randy W., Lahart, Joseph A., Butikofer, Bradley G.
• Primary Examiner(s): Dean, Raymond
• Application Number:
  US14/844,397
• Time in Patent Office: 1,076 Days
• Field of Search: 455450-4522
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

A method includes monitoring, by a receiver of a first node, a portion of a spectrum. The method also includes receiving, by the receiver of the first node, a signal on a first frequency within a range of frequencies. The method additionally includes determining that the received signal is a link request from another node. The method further includes decoding a proposed link configuration from the link request. The proposed link configuration includes a proposed transaction frequency for a transaction to be sent to the first node from the other node. The proposed transaction frequency may be the same as or different from the first frequency. The method may also include determining, by a processor of the first node, whether the proposed link configuration is suitable. The method may additionally include receiving, by the receiver, at least one signal indicative of the transaction from the other node.

Claims

1. A method, comprising:

monitoring, by at least one receiver of a first node, at least a portion of a spectrum;

receiving, by the at least one receiver of the first node, a channel probe from at least one other node, the channel probe being within a beacon frequency range;

decoding channel quality metrics associated with the at least one other node from the channel probe;

receiving, by the at least one receiver of the first node, a signal on a first frequency within a range of frequencies, the first frequency being a beacon frequency within the beacon frequency range;

determining that the received signal is a link request from the at least one other node;

decoding a proposed link configuration from the link request, the proposed link configuration at least including a location of the at least one other node and at least one proposed transaction frequency for a transaction to be sent to the first node from the at least one other node, the at least one proposed transaction frequency being outside of the beacon frequency range, the at least one proposed transaction frequency being different from the first frequency;

determining, by at least one processor of the first node, that the proposed link configuration is not suitable;

selecting, by the at least one processor of the first node, a counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node;

sending, by a transmitter of the first node, a counter-proposal link request to the at least one other node, the counter-proposal link request including the counter-proposal link configuration at least including at least one counter-proposal transaction frequency for the transaction to be sent to the first node from the at least one other node, the at least one counter-proposal transaction frequency being outside of the beacon frequency range;

receiving, by the at least one receiver of the first node and from the at least one other node, an acknowledgement confirming that the counter-proposal link configuration is suitable; and

receiving, by the at least one receiver of the first node, at least one signal indicative of the transaction on the at least one counter-proposal transaction frequency from the at least one other node;

receiving, by the at least one receiver of the first node, a second signal on a second frequency within the range of frequencies; and

determining that the received second signal is a false signal based at least in part on the second signal lacking an expected preamble indicative of being another channel probe,

wherein the channel probe, the counter-proposal link request, the acknowledgement, the signal, and the at least one signal are in the high frequency (HF) spectrum,

wherein the channel probe, the counter-proposal link request, the acknowledgement, the signal, and the at least one signal are at least one of reflected or refracted off earth'"'"'s ionosphere resulting in beyond-line-of-sight communications between the first node and the at least one other node.

2. The method of claim 1, further comprising:

determining a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum; and

wherein selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node further comprises;

selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node and the spectrum occupancy profile.

3. The method of claim 1, further comprising:

determining a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum; and

wherein selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node further comprises;

selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on at least one of a signal-to-noise ratio, a delay spread, a signal strength, a type of service, a time of day, an approximate distance between the first node and the at least one other node, and a spectrum sector location having a least occupied bandwidth.

4. The method of claim 1, wherein the proposed link configuration further includes a transaction bandwidth, a type of service, the first node'"'"'s address, and the at least one other node'"'"'s address.

5. The method of claim 1, wherein the second frequency is within the beacon frequency range.

6. The method of claim 5, further comprising:

storing information related to the false signal in a non-transitory computer readable medium, the stored information including a bandwidth, a frequency, and a modulation of the false signal.

7. The method of claim 6, further comprising:

receiving, by the at least one receiver of the first node, a third signal on a third frequency within the range of frequencies; and

determining that the received third signal is another false signal based at least in part on stored information related to the false signal.

12. The method of claim 1, further comprising:

determining a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum; and

wherein selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node further comprises;

selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on at least one of a signal-to-noise ratio, a signal strength, a type of service, a time of day, an approximate distance between the first node and the at least one other node, and a spectrum sector location having a least occupied bandwidth.

13. The method of claim 1, further comprising:

determining a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum; and

wherein selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node further comprises;

selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on a signal-to-noise ratio, a signal strength, a type of service, a time of day, an approximate distance between the first node and the at least one other node, and a spectrum sector location.

14. The method of claim 5, further comprising:

determining a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum; and

wherein selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node further comprises;

selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on a signal-to-noise ratio, a signal strength, a type of service, a time of day, an approximate distance between the first node and the at least one other node, and a spectrum sector location.

15. The method of claim 1, further comprising:

determining a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum; and

wherein selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on the channel quality metrics associated with the at least one other node further comprises;

selecting, by the at least one processor of the first node, the counter-proposal link configuration based at least on a delay spread.

16. The method of claim 1, wherein one or more of the first node and the at least one other node are vehicular nodes.

19. The method of claim 1, wherein the proposed link configuration further includes a transaction bandwidth, a type of service, the first node'"'"'s address, and the at least one other node'"'"'s address, wherein the second frequency is within the beacon frequency range, the method further comprising:

storing information related to the false signal in a non-transitory computer readable medium, the stored information including a bandwidth, a frequency, and a modulation of the false signal;

receiving, by the at least one receiver of the first node, a third signal on a third frequency within the range of frequencies; and

determining that the received third signal is another false signal based at least in part on stored information related to the false signal.

8. A node of a network, comprising:

a transmitter of a first node;

at least one receiver of the first node configured to monitor at least a portion of a spectrum and to receive a signal on a first frequency within a range of frequencies, the first frequency being a beacon frequency within a beacon frequency range;

at least one processor of the first node configured to determine that the received signal is a link request from at least one other node; and

a demodulator component of the first node configured to decode a proposed link configuration from the link request, the proposed link configuration at least including a location of the at least one other node and at least one proposed transaction frequency for a transaction to be sent to the node from the at least one other node, a transaction bandwidth, a type of service, and at least one of the first node'"'"'s address, the at least one other node'"'"'s address, and a location of the at least one other node, the at least one proposed transaction frequency being outside of the beacon frequency range, the at least one proposed transaction frequency being different from the first frequency,

wherein the at least one processor is further configured to determine whether the proposed link configuration is suitable,

wherein the at least one receiver is further configured to receive at least one signal indicative of the transaction from the at least one other node,

wherein the at least one processor is further configured to determine that the proposed link configuration is not suitable,

wherein the transmitter is configured to send a counter-proposal link request to the at least one other node, the counter-proposal link request including a counter-proposal link configuration at least including at least one counter-proposal transaction frequency for the transaction to be sent to the first node from the at least one other node,

wherein the at least one receiver is further configured to receive an acknowledgement from the at least one other node confirming that the counter-proposal link configuration is suitable, and

wherein the at least one receiver is further configured to receive the at least one signal indicative of the transaction on the at least one counter-proposal transaction frequency from the at least one other node,

wherein the at least one receiver is further configured to receive a second signal on a second frequency within the range of frequencies,

wherein the at least one processor is further configured to determine that the received second signal is a false signal based at least in part on the second signal lacking an expected preamble indicative of being another channel probe,

wherein the channel probe, the counter-proposal link request, the acknowledgement, the signal, and the at least one signal are in the high frequency (HF) spectrum,

wherein the channel probe, the counter-proposal link request, the acknowledgement, the signal, and the at least one signal are at least one of reflected or refracted off earth'"'"'s ionosphere resulting in beyond-line-of-sight communications between the first node and the at least one other node.

9. The node of claim 8, further comprising wherein the at least one receiver is further configured to receive a second signal on a second frequency within the range of frequencies, and wherein the at least one processor is further configured to determine that the received second signal is a false signal.

17. The node of claim 8, wherein one or more of the first node and the at least one other node are vehicular nodes.

10. A method, comprising:

monitoring, by at least one receiver of a first node, at least a portion of a spectrum;

sending, by a transmitter of the first node, a channel probe to at least one other node, the channel probe being within a beacon frequency range;

determining, by at least one processor of the first node, a spectrum occupancy profile of the spectrum based on monitoring at least the portion of the spectrum, the spectrum occupancy profile at least including information of unused frequencies of at least the portion of the spectrum;

selecting, by the at least one processor of the first node, a proposed link configuration based at least on the spectrum occupancy profile and at least one of a signal-to-noise ratio, a delay spread, a signal strength, a type of service, a time of day, an approximate distance between the first node and the at least one other node, the proposed link configuration at least including a location of the first node and at least one proposed transaction frequency for a transaction to be sent to the at least one other node from the first node;

sending, by the transmitter of the first node over a frequency of the beacon frequency range, a link request including the proposed link configuration to the at least one other node, wherein the at least one proposed transaction frequency is outside of the beacon frequency range;

sending, by the transmitter of the first node, at least one signal indicative of the transaction to the at least one other node;

receiving, by the at least one receiver of the first node, a second signal on a second frequency within the range of frequencies; and

determining that the received second signal is a false signal based at least in part on the second signal lacking an expected preamble indicative of being another channel probe,

wherein the at least one signal is in the high frequency (HF) spectrum,

wherein the at least one signal is at least one of reflected or refracted off earth'"'"'s ionosphere resulting in beyond-line-of-sight communication between the first node and the at least one other node.

11. The method of claim 10, further comprising:

receiving, by the at least one receiver of the first node, an acknowledgment from the at least one other node, the acknowledgement confirming that the proposed link configuration is suitable,

wherein sending, by the transmitter of the first node, the transaction to the at least one other node further comprises;

sending, by the transmitter of the first node, the at least one signal indicative of the transaction to the at least one other node on the at least one proposed transaction frequency.

18. The method of claim 10, wherein one or more of the first node and the at least one other node are vehicular nodes.