Method and system for a new packet preamble for wideband wireless local area network (LAN) systems

• US 7,515,581 B2
• Filed: 02/03/2005
• Issued: 04/07/2009
• Est. Priority Date: 04/13/2004
• Status: Active Grant

• Current Assignee: Bell Northern Research, LLC (Hilco Inc. (d/b/a Hilco Global))
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Moorti, Rajendra Tushar
• Primary Examiner(s): SOBUTKA, PHILIP
• Application Number:
  US11/050,505
• Publication Number:
  US 20050226208A1
• Time in Patent Office: 1,524 Days
• Field of Search: 370/350, 370/335
• US Class Current: 370/350
• CPC Class Codes: H04L 27/26132 using repetition
• CPC Class Codes: H04L 27/2656 Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
• CPC Class Codes: H04L 7/041 using special codes as synchronising signal

Abstract

Methods and systems for processing a packet are disclosed herein. Aspects of the method may comprise replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol. A portion of the generated plurality of replicated components of a legacy preamble synchronization symbol may be grouped and scaled to at least one wide-bandwidth synchronization symbol. A wide-bandwidth preamble may be generated utilizing the wide-bandwidth synchronization symbol. The replicated component of the legacy preamble synchronization symbol may comprise a time domain component and/or a frequency domain component. The time domain component may comprise at least one modulated symbol and the frequency domain component may comprise at least one tone. The grouped generated plurality of replicated components of a legacy preamble synchronization symbol may be scaled with a scaling mask to generate the wide-bandwidth synchronization symbol.

Claims

1. A method for processing a packet, the method comprising:

replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

grouping at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol; and

scaling at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol.

2. The method according to claim 1, comprising:

generating a wide-bandwidth preamble utilizing said generated at least one wide-bandwidth synchronization symbol.

3. The method according to claim 1, wherein said replicated at least one component of said legacy preamble synchronization symbol comprises one or both of a time domain component and/or a frequency domain component.

4. The method according to claim 3, wherein said time domain component comprises at least one modulated symbol.

5. The method according to claim 3, wherein said frequency domain component comprises at least one tone.

6. The method according to claim 1, comprising:

scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol with a scaling mask to generate said at least one wide-bandwidth synchronization symbol.

7. The method according to claim 6, wherein said scaling mask is a multiple of a replicating factor utilized by said replicating to generate said plurality of replicated components of a legacy preamble synchronization symbol.

8. The method according to claim 1, wherein said generated at least one wide-bandwidth synchronization symbol comprises a plurality of active and inactive tones with inter-tone spacing of about 312.5 kHz.

9. A machine-readable storage having stored thereon, a computer program having at least one code section for processing a packet, the at least one code section being executable by a machine to perform steps comprising:

replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

grouping at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol; and

scaling at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol.

10. The machine-readable storage according to claim 9, comprising code for generating a wide-bandwidth preamble utilizing said generated at least one wide-bandwidth synchronization symbol.

11. The machine-readable storage according to claim 9, wherein said replicated at least one component of said legacy preamble synchronization symbol comprises one or both of a time domain component and/or a frequency domain component.

12. The machine-readable storage according to claim 11, wherein said time domain component comprises at least one modulated symbol.

13. The machine-readable storage according to claim 11, wherein said frequency domain component comprises at least one tone.

14. The machine-readable storage according to claim 9, comprising code for scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol with a scaling mask to generate said at least one wide-bandwidth synchronization symbol.

15. The machine-readable storage according to claim 14, wherein said scaling mask is a multiple of a replicating factor utilized by said replicating to generate said plurality of replicated components of a legacy preamble synchronization symbol.

16. The machine-readable storage according to claim 9, wherein said generated at least one wide-bandwidth synchronization symbol comprises a plurality of active and inactive tones with inter-tone spacing of about 312.5 kHz.

17. A system for processing a packet, the system comprising:

at least one processor that replicates at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

said at least one processor groups at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol; and

said at least one processor scales at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol.

18. The system according to claim 17, wherein said at least one processor generates a wide-bandwidth preamble utilizing said generated at least one wide-bandwidth synchronization symbol.

19. The system according to claim 17, wherein said replicated at least one component of said legacy preamble synchronization symbol comprises one or both of a time domain component and/or a frequency domain component.

20. The system according to claim 19, wherein said time domain component comprises at least one modulated symbol.

21. The system according to claim 19, wherein said frequency domain component comprises at least one tone.

22. The system according to claim 17, wherein said at least one processor scales said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol with a scaling mask to generate said at least one wide-bandwidth synchronization symbol.

23. The system according to claim 22, wherein said scaling mask is a multiple of a replicating factor utilized by said replicating to generate said plurality of replicated components of a legacy preamble synchronization symbol.

24. The system according to claim 17, wherein said generated at least one wide-bandwidth synchronization symbol comprises a plurality of active and inactive tones with inter-tone spacing of about 312.5 khz.

25. A method for processing a packet, the method comprising:

replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

grouping at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol;

scaling at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol; and

preserving inter-tone spacing between said legacy preamble synchronization symbol and said generated at least one wide-bandwidth synchronization symbol by said scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol.

26. A method for processing a packet, the method comprising:

replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

grouping at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol;

scaling at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol; and

preserving periodicity between said legacy preamble synchronization symbol and said generated at least one wide-bandwidth synchronization symbol by said scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol.

27. A machine-readable storage having stored thereon, a computer program having at least one code section for processing a packet, the at least one code section being executable by a machine to perform steps comprising:

replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

grouping at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol;

scaling at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol; and

preserving inter-tone spacing between said legacy preamble synchronization symbol and said generated at least one wide-bandwidth synchronization symbol by said scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol.

28. A machine-readable storage having stored thereon, a computer program having at least one code section for processing a packet, the at least one code section being executable by a machine to perform steps comprising:

replicating at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

grouping at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol;

scaling at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol; and

preserving periodicity between said legacy preamble synchronization symbol and said generated at least one wide-bandwidth synchronization symbol by said scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol.

29. A system for processing a packet, the system comprising:

at least one processor that replicates at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

said at least one processor groups at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol;

said at least one processor scales at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol; and

wherein said at least one processor preserves inter-tone spacing between said legacy preamble synchronization symbol and said generated at least one wide-bandwidth synchronization symbol by said scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol.

30. A system for processing a packet, the system comprising:

at least one processor that replicates at least one component of a legacy preamble synchronization symbol to generate a plurality of replicated components of a legacy preamble synchronization symbol;

said at least one processor groups at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol;

said at least one processor scales at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol to generate at least one wide-bandwidth synchronization symbol; and

wherein said at least one processor preserves periodicity between said legacy preamble synchronization symbol and said generated at least one wide-bandwidth synchronization symbol by said scaling said at least a portion of said grouped at least a portion of said generated plurality of replicated components of a legacy preamble synchronization symbol.