Recognition scheme for moderating wireless protocols

• US 7,277,451 B1
• Filed: 07/31/2002
• Issued: 10/02/2007
• Est. Priority Date: 10/11/2001
• Status: Expired due to Fees

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Oxford Semiconductor, Inc. (Broadcom, Inc.)
• Inventors: Chen, Minghua, Liang, Ping
• Primary Examiner(s): Pham; Chi
• Assistant Examiner(s): TRAN, PHUC H
• Application Number:
  US10/211,976
• Time in Patent Office: 1,889 Days
• Field of Search: None
• US Class Current: 370/445
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 16/22 Traffic simulation tools or models
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements

Abstract

Wireless communication networks utilize various communication protocols to exchange data between wireless network devices. Overlapping communication frequencies between data exchange protocols present a collision and interference problem when data transmissions are transmitted using similar timing and frequency characteristics during wireless transit. A device and method for receiving and separating collision signals during transit in a wireless communication network where overlapping communication frequencies coexist is described to significantly reduce the loss of data and information caused by interference and colliding transmission signals.

Claims

1. A wireless network collision rectification device used to resolve collisions between data exchange protocols comprising a first protocol and a second protocol which operate using overlapping communication frequencies, the device comprising:

a monitoring component, which receives a plurality of signal transmissions and generates a collision signal indicative of frequency-overlapping signal transmissions between the first and second protocols;

a modeling component, which accepts the collision signal and produces a characteristic waveform which identifies a plurality of component parts of the collision signal corresponding to the first and the second protocols; and

a separation component, which isolates one or more of the plurality of component parts of the collision signal by resolution of the characteristic waveform and recovers one or more of the isolated component parts for subsequent transmission using at least one of the protocols.

2. The device of claim 1, wherein the separation component identifies the plurality of component parts of the collision signal by comparison with a plurality of predicted waveforms generated by modeling combinations of component parts of the first and the second protocols.

3. The device of claim 1, wherein the separation component models the predicted waveforms using a bit combination pattern which is compared to the collision signal to identify bitwise information contained in the first and the second protocols.

4. The device of claim 1, wherein the separation component utilizes a direct resolution scheme in which one or more modeled waveforms are compared to the collision signal to identify waveform components resultant from the first and the second protocol.

5. The device of claim 1, wherein the separation component utilizes a time domain identification scheme to determine the transmitted data resultant from the first and the second protocol, and wherein the collision signal is subdivided into sections based at least in part on the timing of the transmission.

6. The device of claim 1, wherein the separation component performs a component waveform matching analysis to identify component parts of the collision signal resulting from the first and the second protocol.

7. The device of claim 1, wherein the separation component performs a partial recognition analysis to identify component parts of the collision signal resulting from the first and the second protocol.

8. The device of claim 1, wherein the separation component performs pattern recognition analysis to identify component parts of the collision signal resulting from the first and the second protocol.

9. A collision resolution device for a wireless communication network in which data is transmitted using a first protocol and a second protocol which operate with overlapping communication frequencies, the device comprising:

a monitoring component, which monitors the information transmissions and identifies frequency-overlapping data collisions between the first and the second protocols, wherein the collisions comprise a first component signal derived from the first protocol and a second component signal derived from the second protocol; and

an extraction component, which analyzes the data collisions and separates the first and second component signals.

10. The device of claim 9, wherein the collision resolution device further comprises a transmission component, which transmits one or more of the separated component signals in a non-frequency-overlapping manner.

11. The device of claim 9, wherein the extraction component separates the first and second component signals by comparison with a plurality of predicted waveforms generated by modeling collisions between the first and the second protocols.

12. The device of claim 9, wherein the extraction component models the waveforms of the first and second component signals using a bit combination pattern which is compared to the collision signal to identify bitwise information contained in the first and the second protocols.

13. The device of claim 9, wherein the extraction component utilizes a direct resolution scheme in which one or more modeled waveforms are compared to the collision signal to identify waveforms of the component signals resultant from the first and the second protocol.

14. The device of claim 9, wherein the extraction component utilizes a time domain identification scheme to determine the data of the transmitted component signals resultant from the first and the second protocol.

15. The device of claim 9, wherein the extraction component performs a waveform matching analysis to identify the component signals of the collision signal resulting from the first and the second protocol.

16. The device of claim 9, wherein the extraction component performs a distance pattern matching analysis to identify component signals of the collision signal resulting from the first and the second protocol.

17. The device of claim 9, wherein the extraction component performs pattern recognition analysis to identify component signals of the collision signal resulting from the first and the second protocol.