METHOD AND APPARATUS FOR SIGNALING TRANSMISSION CHARACTERISTICS IN A WIRELESS COMMUNICATION NETWORK

• US 20100157907A1
• Filed: 02/10/2010
• Published: 06/24/2010
• Est. Priority Date: 10/31/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Lakkis, Ismail, Sampath, Hemanth, Taghavi Nasrabadi, Mohammad Hossein, Jain, Avinash
• Granted Patent: US 9,008,066 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04J 13/0014 Golay
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 92/10 between terminal device and access point, i.e. wireless air interface

Abstract

A wireless network uses an improved frame structure to increase timing acquisition capabilities as well as reduction of spectral lines. In one aspect, the frame packet can be used to communicate the different modes of operation under which the packet was created.

Claims

1. A method for wireless communication comprising:

generating a packet that comprises a first portion and a second portion separated by a delimiter, wherein the delimiter is further used to signal a characteristic of the second portion; and

transmitting the packet.

2. The method of claim 1, wherein the generation comprises encoding the delimiter using a first scheme and encoding the second portion using a second scheme different from the first scheme.

3. The method of claim 2, wherein the first scheme comprises a single carrier communication scheme, and the second scheme comprises an orthogonal frequency division multiplexing (OFDM) communication scheme.

4. The method of claim 1, wherein the delimiter comprises a plurality of symbols indicating at least one of:

a rate of transmission of at least one of a header and a data of the packet;

a mode of transmission of the packet;

a beacon packet;

a non-beacon packet;

a modulation and coding scheme of a header of the packet;

a duration of the packet;

or a duration of an allocated medium for transmission.

5. The method of claim 4, wherein the duration of the allocated medium for transmission comprises a network allocation vector.

6. The method of claim 1, wherein the characteristic indicates whether the packet was transmitted in one of a single carrier and OFDM carrier mode.

7. The method of claim 1, wherein the characteristic comprises an indication of a duration of a medium allocated to an exchange of a plurality of packets.

8. The method of claim 7, wherein the plurality of packets comprises the packet.

9. The method of claim 6, wherein the packet comprises a preamble used for both the single carrier and the OFDM mode.

10. The method of claim 1, wherein the delimiter is based on at least one Golay code.

11. The method of claim 1, wherein the delimiter is used for channel estimation.

12. A communication apparatus comprising:

means for generating a packet that comprises a first portion and a second portion separated by a delimiter, wherein the delimiter is further used to signal a characteristic of the second portion; and

means for transmitting the packet.

13. The communication apparatus of claim 12, wherein the generation means comprises means for encoding the delimiter using a first scheme and means for encoding the second portion using a second scheme different from the first scheme.

14. The communication apparatus of claim 13, wherein the first scheme comprises a single carrier communication scheme, and the second scheme comprises an orthogonal frequency division multiplexing (OFDM) communication scheme.

15. The communication apparatus of claim 12, wherein the delimiter comprises a plurality of symbols indicating at least one of:

a rate of transmission of at least one of a header and a data of the packet;

a mode of transmission of the packet;

a beacon packet;

a non-beacon packet;

a modulation and coding scheme of a header of the packet;

a duration of the packet;

or a duration of an allocated medium for transmission.

16. The communication apparatus of claim 15, wherein the duration of the allocated medium for transmission comprises a network allocation vector.

17. The communication apparatus of claim 12, wherein the characteristic indicates whether the packet was transmitted in one of a single carrier and OFDM carrier mode.

18. The communication apparatus of claim 12, wherein the characteristic comprises an indication of a duration of a medium allocated to an exchange of a plurality of packets.

19. The communication apparatus of claim 18, wherein the plurality of packets comprises the packet.

20. The communication apparatus of claim 16, wherein the packet comprises a preamble used for both the single carrier and the OFDM mode.

21. The communication apparatus of claim 12, wherein the delimiter is based on at least one Golay code.

22. The communication apparatus of claim 12, wherein the delimiter is used for channel estimation.

29. The communication apparatus of claim 12, wherein the characteristic comprises an indication of a duration of a medium allocated to an exchange of a plurality of packets.

30. The communication apparatus of claim 18, wherein the plurality of packets comprises the packet.

23. A communication apparatus comprising:

a processing system configured to;

generate a packet that comprises a first portion and a second portion separated by a delimiter, wherein the delimiter is further used to signal a characteristic of the second portion; and

transmit the packet.

24. The communication apparatus of claim 23, wherein the processing system is further configured to encode the delimiter using a first scheme and encode the second portion using a second scheme different from the first scheme.

25. The communication apparatus of claim 24, wherein the first scheme comprises a single carrier communication scheme, and the second scheme comprises an orthogonal frequency division multiplexing (OFDM) communication scheme.

26. The communication apparatus of claim 23, wherein the delimiter comprises a plurality of symbols indicating at least one of:

a rate of transmission of at least one of a header and a data of the packet;

a mode of transmission of the packet;

a beacon packet;

a non-beacon packet;

a modulation and coding scheme of a header of the packet;

a duration of the packet;

or a duration of an allocated medium for transmission.

27. The communication apparatus of claim 26, wherein the duration of the allocated medium for transmission comprises a network allocation vector.

28. The communication apparatus of claim 23, wherein the characteristic indicates whether the packet was transmitted in one of a single carrier and OFDM carrier mode.

31. The communication apparatus of claim 27, wherein the packet comprises a preamble used for both the single carrier and the OFDM mode.

32. The communication apparatus of claim 23, wherein the delimiter is based on at least one Golay code.

33. The communication apparatus of claim 23, wherein the delimiter is used for channel estimation.

34. A computer-program product for communications comprising:

a machine-readable medium encoded with instructions executable to;

generate a packet that comprises a first portion and a second portion separated by a delimiter, wherein the delimiter is further used to signal a characteristic of the second portion; and

transmit the packet.

35. A wireless device comprising:

an antenna;

a packet generator configured to generate a packet that comprises a first portion and a second portion separated by a delimiter, wherein the delimiter is further used to signal a characteristic of the second portion; and

a transmitter configured to transmit, via the antenna, the packet.