Watermarks/signatures for wireless communications

• US 20050220322A1
• Filed: 01/11/2005
• Published: 10/06/2005
• Est. Priority Date: 01/13/2004
• Status: Abandoned Application

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Shin, Sung-Hyuk, Olesen, Robert Lind, Reznik, Alexander, Chitrapu, Prabhakar R., Kaewell, John David Jr., Herschaft, Richard Dan, Hoffmann, John Erich, Chiang, Bing A.
• Application Number:
  US11/032,780
• Publication Number:
  US 20050220322A1
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 2463/103 applying security measure for protecting copy right protecting software against unauthorised usage in a vending or licensing environment, e.g. protection the software providers copyright G06F21/10; data processing systems or methods, specially adapted for payment schemes, architectures or protocols G06Q20/00; secrecy systems or subscription systems H04N7/16
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32
• CPC Class Codes: H04W 12/03 Protecting confidentiality, e.g. by encryption
• CPC Class Codes: H04W 12/10 Integrity

Abstract

At least one At least one user data stream is layer 2/3 processed, physical layer processed and radio frequency processed. A watermark/signature is embedded at at least one of layer 2/3, physical layer or radio frequency, producing an embedded wireless communication. The embedded wireless communication is wirelessly transferred. The embedded wireless communication is received and the watermark/signature is extracted from the embedded wireless communication.

Claims

1. A method comprising:

performing on at least one user data stream layer 2/3 processing, physical layer processing and radio frequency processing;

embedding a watermark/signature in at least one of layer 2/3, physical layer or radio frequency, producing an embedded wireless communication;

wirelessly transferring the embedded wireless communication; and

receiving the embedded wireless communication and extracting the watermark/signature from the embedded wireless communication.

2. The method of claim 1 further comprising receiving tokens/keys and processing the embedded tokens/keys for use in embedding the watermark/signature into the embedded wireless communication.

3. The method of claim 1 wherein the embedded watermark/signature is used to authenticate a communication prior to any substantial processing at an OSI layer higher than layer 2/3, physical layer and radio frequency processing.

4. The method of claim 1 wherein the embedding the watermark/signature results in at least one physical channel carrying the user data stream and a watermarking channel carrying watermark/signature information embedded into the at least one physical channel.

5. The method of claim 4 wherein the embedded watermarking channel carries security related data from OSI layers higher than layer 2/3, physical layer and radio frequency processing.

6. The method of claim 4 wherein the watermarking channel is encrypted.

7. The method of claim 4 wherein the at least one physical channel is maintained in periods when there in no user data to send on the at least one physical channel so that the watermarking channel is maintained.

8. The method of claim 1 wherein the watermark/signature in imprinted onto at least one physical channel.

9. The method of claim 1 wherein the watermark/signature is embedded using error detection/error correction coding.

10. The method of claim 1 wherein the watermark/signature is embedded using scrambling/channelization codes.

11. The method of claim 1 wherein the watermark/signature is embedded using bits of the user data stream.

12. The method of claim 1 wherein the watermark/signature is embedded by adjusting pulse/spectrum shapes.

13. The method of claim 1 wherein the watermark/signature is embedded by adjusting modulation.

14. The method of claim 1 wherein the watermark/signature is embedded by adjusting at least one of carrier frequency, jitter and temporal/delay characteristics.

15. The method of claim 1 wherein the watermark/signature is embedded by adjusting antenna polarization.

16. The method of claim 1 wherein the watermark/signature is adjusted for MIMO communications using a phase rotation sequence.

17. The method of claim 16 wherein the phase rotation is performed using Shelton-Butler matrix hardware and switching input/output ports.

18. The method of claim 1 wherein the watermark/signature is embedded by varying a delay between a plurality of transmit antennas.

19. The method of claim 1 wherein the layer 2/3 processing, physical layer processing and radio frequency processing of the user data is performed by a transmit/receive unit.

20. The method of claim 1 wherein the layer 2/3 processing, physical layer processing and radio frequency processing of the user data is performed by a transmit/receive unit and at least one network node.

21. A transmit/receive unit (TRU) comprising:

means for performing on at least one user data stream layer 2/3 processing, physical layer processing and radio frequency processing;

means for embedding a watermark/signature in at least one of layer 2/3, physical layer or radio frequency, producing an embedded wireless communication;

means for wirelessly transferring the embedded wireless communication.

22. The TRU of claim 21 further comprising receiving tokens/keys and processing the embedded tokens/keys for use in embedding the watermark/signature into the embedded wireless communication.

23. The TRU of claim 21 wherein the embedded watermark/signature is used to authenticate a communication prior to any substantial processing at an OSI layer higher than layer 2/3, physical layer and radio frequency processing.

24. The TRU of claim 21 wherein the embedding the watermark/signature results in at least one physical channel carrying the user data stream and a watermarking channel carrying watermark/signature information embedded into the at least one physical channel.

25. The TRU of claim 24 wherein the embedded watermarking channel carries security related data from OSI layers higher than layer 2/3, physical layer and radio frequency processing.

26. The TRU of claim 24 wherein the watermarking channel is encrypted.

27. The TRU of claim 24 wherein the at least one physical channel is maintained in periods when there in no user data to send on the at least one physical channel so that the watermarking channel is maintained.

28. The TRU of claim 21 wherein the watermark/signature in imprinted onto at least one physical channel.

29. The TRU of claim 21 wherein the watermark/signature is embedded using error detection/error correction coding.

30. The TRU of claim 21 wherein the watermark/signature is embedded using scrambling/channelization codes.

31. The TRU of claim 21 wherein the watermark/signature is embedded using bits of the user data stream.

32. The TRU of claim 21 wherein the watermark/signature is embedded by adjusting pulse/spectrum shapes.

33. The TRU of claim 21 wherein the watermark/signature is embedded by adjusting modulation.

34. The TRU of claim 21 wherein the watermark/signature is embedded by adjusting at least one of carrier frequency, jitter and temporal/delay characteristics.

35. The TRU of claim 21 wherein the watermark/signature is embedded by adjusting antenna polarization.

36. The TRU of claim 21 wherein the watermark/signature is adjusted for MIMO communications using a phase rotation sequence.

37. The TRU of claim 36 wherein the phase rotation is performed using Shelton-Butler matrix hardware and switching input/output ports.

38. The TRU of claim 21 wherein the watermark/signature is embedded by varying a delay between a plurality of transmit antennas.

39. The TRU of claim 21 wherein the layer 2/3 processing, physical layer processing and radio frequency processing of the user data is performed by a transmit/receive unit.

40. The TRU of claim 21 wherein the layer 2/3 processing, physical layer processing and radio frequency processing of the user data is performed by a transmit/receive unit and at least one network node.

41. The TRU of claim 21 wherein the TRU is a wireless TRU.

42. The TRU of claim 21 wherein the TRU is a base station.

43. The TRU of claim 21 wherein an integrated circuit comprises the means for performing, the means for embedding and the means for wirelessly transferring.