Method and apparatus for communicating data in a digital chaos cooperative network

• US 9,479,217 B1
• Filed: 07/28/2015
• Issued: 10/25/2016
• Est. Priority Date: 07/28/2015
• Status: Active Grant

• Current Assignee: John David Terry
• Original Assignee: John David Terry
• Inventors: Terry, John David
• Primary Examiner(s): PHU, PHUONG M
• Application Number:
  US14/811,804
• Time in Patent Office: 455 Days
• Field of Search: 375/140, 375/147, 375/150, 375/260, 370/252, 370/334
• US Class Current: 1/1
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04J 13/0018 Chaotic
• CPC Class Codes: H04L 25/0224 using sounding signals
• CPC Class Codes: H04L 27/00 Modulated-carrier systems
• CPC Class Codes: H04L 27/001 using chaotic signals for secret or secure communication H04L9/001
• CPC Class Codes: H04L 9/001 using chaotic signals

Abstract

The present invention teaches a system and method for cooperatively networking digital chaos transmissions. The invention involves using generated digital chaos sequences as spreading sequences at a transmit side, receiving the spreaded signals at a receive side and despreading the signal, recovering signals at the receive side, comparing a stored replica of the digital chaos spreading codes to the digital chaos spreading codes used at the transmit side to, determining if the signals belong to predefined groups based on a predetermined criteria, and forward the signals to a group member based on its group member assignment.

Claims

1. A method of cooperatively networking digital chaos signals over a wireless transmission performed at a receive side, comprising:

a. receiving a plurality of distinct data signals at the receiving side, wherein each one of said plurality of distinct data signals is modulated with a distinct chaos sequence at a transmitting side, wherein the modulating of each one of said plurality of distinct data signals at the transmit side is performed using a generated digital chaos sequence database having plurality of digital chaos sequences, wherein the method for generating the digital chaos sequence database comprises, recording a featureless waveform having nonlinear dynamics, buffering the recorded featureless waveform, sampling a fixed number of samples for a particular spreading factor of said buffered featureless waveform, storing a varied quantity of groups of the fixed number of samples for a particular spreading factor to form the entries of the digital chaos sequence database, such that the groups of fixed number of samples for a particular spreading factor are distinct with low cross-correlation amongst the groups, and then processing all the groups of fixed number of samples using Gram-Schmidt process,

b. demodulating each one of the plurality of distinct data signals at the receiving side to extract a plurality of distinct user data signals,

c. verifying that at least one of the distinct user data signals is addressed to the receiving side, processing the at least one of the distinct user data signals according to whether the at least one of the distinct user data signal is addressed to a distinct group of receiving sides of a plurality of groups of receiving sides, wherein the plurality of groups of receiving sides includes the receiving side receiving the plurality of distinct data signals as a group member,

d. verifying that a plurality of the extracted plurality of distinct user data signals is not addressed to the receiving side,

e. aggregating the plurality of the extracted plurality of distinct user data signals not addressed to the receiving side to create a new aggregated data signals comprised of an aggregation of extracted plurality of distinct user data signals not addressed to the receive side, wherein the plurality of distinct user data signals at the receive sides are signal processed together to combat the effects of the wireless medium and mutual-interference to improve the detection for all active distinct users data signal,

f. transmitting the aggregated plurality of extracted plurality of distinct user data signals not addressed to the receive side, where in the transmission is time aligned, and retransmitted over a wireless medium at the next transmission opportunity (Txop) or within the-time specified by a delay and disruption tolerant protocol known at the receiving side.

2. A method of claim 1, wherein the extracted distinct user data signal belongs to at least one of a priori predefined user groups known to the receiver side and communicated by a network manager or coordinator.

3. The method of claim 1, wherein the extracted distinct user data signals belong to the same user group as the receiving side, and said extracted distinct user data signals are addressed to the receiving side and are tagged to indicate they contain at least one part of a fragmented MAC Payload Data Unit (MPDU) with a unique packet identification and wherein the remaining fragments of the MPDU are received at the receiving side by at least one separate transmission, wherein the remaining fragments of the MPDU contain the unique packet identification.

4. The method of claim 3, wherein the fragmented MPDU and the remaining fragments of MPDU arrive at a MAC common processing unit at the receiving side for reassembly.

5. The method of claim 4, wherein the received fragment MPDU is buffered, sequenced, and forward up to the MAC common processing unit for reassembly with the remaining fragments of the MPDU.

6. The method of claim 1, wherein the extracted distinct user data signals do not belong to the same user group as the receiving side device, and said extract distinct user data signals are discarded from the receiving side buffer.

7. A method of cooperatively networking digital chaos signals over a wireless transmission performed by a receive side, comprising:

a. receiving an aggregated data signal having a plurality of distinct data signals containing distinct user data signals originating from a plurality of users, wherein each one of the plurality of distinct data signals is modulated with a distinct chaos sequence at a transmitting side,

b. demodulating each one of said plurality of distinct data signals at the receiving side to extract the distinct user data signals, the modulating of the data signal being performed using a generated digital chaos sequence database, wherein the generating of the digital chaos sequence comprises, recording a featureless waveform having nonlinear dynamics in a memory, buffering the featureless waveform, sampling a fixed number of samples for a particular spreading factor of said buffered featureless waveform, storing a varied quantity of groups of the fixed number of samples for a particular spreading factor to form the entries of the database, such that the groups of fixed number of samples for a particular spreading factor are distinct with low cross-correlation amongst the groups, and then processing all the groups segments using Gram-Schmidt process, operating in a coordinated fashion to improve the overall network capacity for all users sharing the wireless medium, wherein said extracted distinct user data signals not addressed to the receiving side are aggregated, time aligned, and retransmitted over the wireless medium at the next transmission opportunity (Txop) or within the time specified by a delay and disruption tolerant protocol known at the receiving side, and

c. signal processing the extracted distinct user data signals according to membership or non-membership to a particular group class.

8. A method of claim 7, wherein at least one of the extracted distinct user data signals belongs to one of at least one of a priori predefined user groups known to the receiver and communicated by the network manager or coordinator.

9. The method of claim 7, wherein at least one of the extracted distinct user data signals belongs to the same user group as the receiving side, and wherein said at least one of the extract distinct user data signals is address to receiving side and is tagged to indicate the extracted distinct user data signal contains at least one part of a fragmented MAC Payload Data Unit (MPDU) with a unique packet identification and wherein the remaining fragments of the MPDU are received by at least one separate transmission, wherein the remaining fragments of the MPDU contain the unique packet identification.

10. The method of claim 9, wherein the fragments the MPDU and the remaining fragments of the MPDU arrive at a MAC common processing unit at the receiving side assembly.

11. The method of claim 10, wherein the received fragment MPDU is buffered, sequenced, and forward up to the MAC common processing unit of the receiving side for reassembly with the remaining fragments of the MPD.

12. The method of claim 7, wherein the extracted distinct user data signal does not belong to the same user group as the receiving side, and said extract distinct user data signals are discarded from a receiving side buffer.

13. A method of processing an aggregate data signal in wireless transmission performed at a receive side, comprising:

a. receiving an aggregate data signal at the receiving side, the aggregate data signal having a plurality of distinct data signals containing distinct user data signals originating from a plurality of users, wherein each one of the plurality of distinct data signals is modulated with a distinct chaos sequence at a transmitting side,

b. demodulating the each one of the plurality of distinct data signal at the receiving side to extract the distinct user data signals, the modulating of the each one of the plurality of data signals being performed using a generated digital chaos sequence database containing the distinct chaos sequence, wherein the generating of the distinct digital chaos sequence comprises, recording a featureless waveform having nonlinear dynamics, sampling a fixed number of samples for a particular spreading factor to produce a group of independent digital chaos segments, storing a varied quantities of groups of the fixed number of samples for a particular spreading factor to form the entries of the database, and converting the group of independent digital chaos segments into a group of orthonormal sequences spanning the same subspace as the group of independent digital chaos segments, and

c. operating in a coordinated fashion to improve the overall network capacity for all users sharing the wireless medium, wherein said extracted distinct user data signals not addressed to the receiving side are aggregated, time aligned, and retransmitted over the wireless medium at the next transmission opportunity (Txop) or within the time specified by a delay and disruption tolerant protocol known at the receiving side, wherein the receiving side operates in a coordinated fashion with any other receiver in the network to improve the overall network capacity for all users sharing the wireless medium,

d. processing the extracted distinct user data signals according to membership or non-membership to a particular group class.

14. A method of claim 13, wherein the featureless waveform is one of at least one of a native analog chaos waveform, aperiodic waveform, or computer simulated non-linear dynamics of a deterministic mapping characteristic.

15. The method of claim 13, each one of the plurality of distinct data signals includes control bits in a pre-amble and a mid-amble of the plurality of distinct data signals.

16. A method of cooperatively networking digital chaos signals over a wireless transmission performed at a receive side, comprising:

a. receiving a data signal at the receiving side, wherein the data signal is modulated with a distinct chaos sequence at a transmitting side,

b. demodulating the data signal at the receiving side to extract a distinct user data signal, the modulating of the data signal being performed using a generated digital chaos sequence database, wherein the generating of the digital chaos sequence comprises, recording a featureless waveform having nonlinear dynamics in a memory, buffering the featureless waveform, sampling a fixed number of samples for a particular spreading factor of said buffered featureless waveform, storing a varied quantity of groups of the fixed number of samples for a particular spreading factor to form the entries of the database, such that the groups of fixed number of samples for a particular spreading factor are distinct with low cross-correlation amongst the groups, and then processing all the groups segments using Gram-Schmidt process,

c. processing the extracted distinct user data signals according to membership or non-membership to a particular group class, and

d. signal processing the extracted distinct user data signals to operate in a coordinated fashion over the wireless medium such that it mimics the transmission from a common originating source and improves the overall network capacity for all active users to an at least one second receiver for, wherein said the signal processed, extracted distinct user data signals not addressed to the second receiver are aggregated, time aligned, and retransmitted over the wireless medium at the next transmission opportunity (Txop) or time specified by a delay and disruption tolerant protocol known at the receive side.

17. A method of claim 16, wherein the featureless waveform is one of at least one of a native analog chaos waveform, aperiodic waveform, computer simulated non-linear dynamics of a deterministic mapping characteristic.

18. The method of claim 16, each one of the plurality of distinct data signals includes control bits in a pre-amble and a mid-amble of the plurality of distinct data signals.