Method and apparatus for supporting modulation-coding scheme set in very high throughput wireless systems

• US 8,934,466 B2
• Filed: 12/15/2011
• Issued: 01/13/2015
• Est. Priority Date: 12/16/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Vermani, Sameer, Abraham, Santosh Paul
• Primary Examiner(s): RIYAMI, ABDULLAH A
• Application Number:
  US13/327,560
• Publication Number:
  US 20120155447A1
• Time in Patent Office: 1,125 Days
• Field of Search: 370/338, 370/342, 370/329, 370/474, 370/471, 370/472, 370/473, 370/208, 370/229, 370/230, 370/235, 370/252, 370/254, 370/310, 370/328, 370/391, 370/392, 455/500, 455/73, 375/224, 375/260
• US Class Current: 370/338
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 1/005 Iterative decoding, including iteration between signal detection and decoding operation
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04W 28/0215 based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51

Abstract

Certain aspects of the present disclosure relate to techniques for designing Modulation-Coding Scheme (MSC) set fields in a transmission frame of Very High Throughput (VHT) wireless systems.

Claims

1. A method for wireless communications, comprising:

constructing, at an apparatus, a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs), wherein the first indication comprises, for each of the different numbers of SSs, a value that represents a highest MCS among the MCSs; and

transmitting the frame.

2. The method of claim 1, wherein the frame further comprises a second indication about a highest data rate supported by the apparatus for reception.

3. The method of claim 2, wherein the frame further comprises at least one of:

a field specifying whether the apparatus advertises its transmitting MCS capability, a third indication about a plurality of MCSs supported by the apparatus for transmitting a corresponding different number of SSs, or a fourth indication about a highest data rate supported for transmission by the apparatus.

4. The method of claim 1, wherein the value is associated with a plurality of bandwidths.

5. The method of claim 1, wherein:

the first indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for reception by the apparatus for that bandwidth.

6. The method of claim 5, wherein the plurality of bandwidths comprises at least one of:

a bandwidth of 20 MHz, a bandwidth of 40 MHz, a bandwidth of 80 MHz, or a bandwidth of 160 MHz.

7. The method of claim 2, wherein the second indication comprises a binary value representing, in units of Mega-bits per second, the highest data rate supported by the apparatus for reception.

10. The method of claim 3, wherein:

the third indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for transmission by the apparatus for that bandwidth.

11. The method of claim 10, wherein the plurality of bandwidths comprises at least one of:

a bandwidth of 20 MHz, a bandwidth of 40 MHz, a bandwidth of 80 MHz, or a bandwidth of 160 MHz.

12. The method of claim 3, wherein the fourth indication comprises a binary value representing, in units of Mega-bits per second, the highest data rate supported for transmission by the apparatus.

13. The method of claim 1, wherein the frame is transmitted in accordance with IEEE 802.11 family of wireless communications standards.

14. The method of claim 1, wherein the first indication denotes no support for receiving that corresponding number of SSs, if the first indication comprises a specific value.

15. The method of claim 1, wherein the first indication comprises a value that indicates a set of the MCSs supported by the apparatus for receiving the corresponding different number of SSs.

16. The method of claim 3, wherein the third indication comprises a value that indicates a set of the MCSs supported by the apparatus for transmitting the corresponding different number of SSs.

8. A method for wireless communications, comprising:

constructing, at an apparatus, a frame comprising;

a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs);

a second indication about a highest data rate supported by the apparatus for reception; and

a third indication about a plurality of MCSs supported by the apparatus for transmitting a corresponding different number of SSs, wherein the third indication comprises, for each of the different numbers of SSs, a value representing a highest MCS among the MCSs supported for transmission by the apparatus; and

transmitting the frame.

9. The method of claim 8, wherein the value is associated with a plurality of bandwidths.

17. An apparatus for wireless communications, comprising:

means for constructing a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs)), wherein the first indication comprises, for each of the different numbers of SSs, a value that represents a highest MCS among the MCSs; and

means for transmitting the frame.

18. The apparatus of claim 17, wherein the frame further comprises a second indication about a highest data rate supported by the apparatus for reception.

19. The apparatus of claim 18, wherein the frame further comprises at least one of:

a field specifying whether the apparatus advertises its transmitting MCS capability, a third indication about a plurality of MCSs supported by the apparatus for transmitting a corresponding different number of SSs, or a fourth indication about a highest data rate supported for transmission by the apparatus.

20. The apparatus of claim 17, wherein the value is associated with a plurality of bandwidths.

21. The apparatus of claim 17, wherein:

the first indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for reception by the apparatus for that bandwidth.

22. The apparatus of claim 21, wherein the plurality of bandwidths comprises at least one of:

a bandwidth of 20 MHz, a bandwidth of 40 MHz, a bandwidth of 80 MHz, or a bandwidth of 160 MHz.

23. The apparatus of claim 18, wherein the second indication comprises a binary value representing, in units of Mega-bits per second, the highest data rate supported by the apparatus for reception.

26. The apparatus of claim 19, wherein:

the third indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for transmission by the apparatus for that bandwidth.

27. The apparatus of claim 26, wherein the plurality of bandwidths comprises at least one of:

a bandwidth of 20 MHz, a bandwidth of 40 MHz, a bandwidth of 80 MHz, or a bandwidth of 160 MHz.

28. The apparatus of claim 19, wherein the fourth indication comprises a binary value representing, in units of Mega-bits per second, the highest data rate supported for transmission by the apparatus.

29. The apparatus of claim 17, wherein the frame is transmitted in accordance with IEEE 802.11 family of wireless communications standards.

30. The apparatus of claim 17, wherein the first indication denotes no support for receiving that corresponding number of SSs, if the first indication comprises a specific value.

31. The apparatus of claim 17, wherein the first indication comprises a value that indicates a set of the MCSs supported by the apparatus for receiving the corresponding different number of SSs.

32. The apparatus of claim 19, wherein the third indication comprises a value that indicates a set of the MCSs supported by the apparatus for transmitting the corresponding different number of SSs.

24. An apparatus for wireless communications, comprising:

means for constructing a frame comprising;

a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs);

a second indication about a highest data rate supported by the apparatus for reception;

a third indication about a plurality of MCSs supported by the apparatus for transmitting a corresponding different numbers of SSs, wherein the third indication comprises, for each of the different number of SSs, a value representing a highest MCS among the MCSs supported for transmission by the apparatus; and

means for transmitting the frame.

25. The apparatus of claim 24, wherein the value is associated with a plurality of bandwidths.

33. An apparatus for wireless communications, comprising:

a circuit configured to construct a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs), wherein the first indication comprises, for each of the different numbers of SSs, a value that represents a highest MCS among the MCSs; and

a transmitter configured to transmit the frame.

34. A non-transitory computer readable medium containing executable instructions for wireless communications, the executable instructions comprising instructions for:

constructing, at an apparatus, a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs), wherein the first indication comprises, for each of the different numbers of SSs, a value that represents a highest MCS among the MCSs; and

transmitting the frame.

35. A method for wireless communications, comprising:

constructing, at an apparatus, a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs); and

transmitting the frame, wherein

the first indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for reception by the apparatus for that bandwidth.

36. The method of claim 35, wherein the plurality of bandwidths comprises at least one of:

a bandwidth of 20 MHz, a bandwidth of 40 MHz, a bandwidth of 80 MHz, or a bandwidth of 160 MHz.

37. The method of claim 35, wherein the frame further comprises a field specifying whether the apparatus advertises its transmitting MCS capability, and a second indication about a plurality of MCSs supported by the apparatus for transmitting a corresponding different number of SSs.

38. The method of claim 37, wherein:

the second indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for transmission by the apparatus for that bandwidth.

39. The method of claim 35, wherein the frame is transmitted in accordance with IEEE 802.11 family of wireless communications standards.

40. The method of claim 35, wherein the first indication denotes no support for receiving that corresponding number of SSs, if the first indication comprises a specific value.

41. An apparatus for wireless communications, comprising:

means for constructing a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs); and

means for transmitting the frame, wherein

the first indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for reception by the apparatus for that bandwidth.

42. The apparatus of claim 41, wherein the plurality of bandwidths comprises at least one of:

a bandwidth of 20 MHz, a bandwidth of 40 MHz, a bandwidth of 80 MHz, or a bandwidth of 160 MHz.

43. The apparatus of claim 41, wherein the frame further comprises a field specifying whether the apparatus advertises its transmitting MCS capability, and a second indication about a plurality of MCSs supported by the apparatus for transmitting a corresponding different number of SSs.

44. The apparatus of claim 43, wherein:

the second indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for transmission by the apparatus for that bandwidth.

45. The apparatus of claim 41, wherein the frame is transmitted in accordance with IEEE 802.11 family of wireless communications standards.

46. The apparatus of claim 41, wherein the first indication denotes no support for receiving that corresponding number of SSs, if the first indication comprises a specific value.

47. An apparatus for wireless communications, comprising:

a circuit configured to construct a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs); and

a transmitter configured to transmit the frame, wherein

the first indication comprises a value for each of a plurality of bandwidths, and

the value represents a highest MCS among the MCSs supported for reception by the apparatus for that bandwidth.

48. A non-transitory computer readable medium containing executable instructions for wireless communications, the executable instructions comprising instructions for:

constructing, at an apparatus, a frame comprising a first indication about a plurality of modulation-coding schemes (MCSs) supported by the apparatus for receiving a corresponding different number of spatial streams (SSs); and

transmitting the frame, wherein

the first indication comprises a value for each of a plurality of bandwidths, and the value represents a highest MCS among the MCSs supported for reception by the apparatus for that bandwidth.