Methods and apparatuses for determining a type of control field

• US 9,602,298 B2
• Filed: 09/28/2011
• Issued: 03/21/2017
• Est. Priority Date: 09/29/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sampath, Hemanth, Merlin, Simone, Wentink, Maarten Menzo, Abraham, Santosh Paul
• Primary Examiner(s): Gillis, Brian J
• Assistant Examiner(s): Ling, Amy
• Application Number:
  US13/247,124
• Publication Number:
  US 20120250668A1
• Time in Patent Office: 2,001 Days
• Field of Search: 370/338
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 1/0039 other detection of signalling, e.g. detection of TFCI explicit signalling H04L1/0046, H04L27/0012 and H04L25/0262 take precedence
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT

Abstract

Systems, method and apparatus of managing wireless communication are described herein.

Claims

1. A method of wireless communication, comprising:

receiving a first frame having a control field and a frame control field, wherein the control field and the frame control field are separate fields;

determining whether the control field comprises a first type or a second type based at least in part on an indication in the control field, wherein the first type is very high throughput (VHT) and the second type is high throughput (HT); and

processing the control field based on the determined type, wherein the first frame is a wrapper frame that comprises the control field and a second frame, and further comprising processing the second frame based on the determined type, wherein the wrapper frame comprises one or more bits in a location of the control field corresponding to a reserved subfield of the control field.

2. The method of claim 1, wherein the indication comprises a bit within the control field, the method further comprising evaluating the bit within the control field, and determining that the second frame is a VHT control frame based on the bit.

3. The method of claim 2, wherein the control field further comprises at least one of a duration field, an address field, a carried frame control, or a FCS field.

4. The method of claim 2, wherein the control field comprises a VHT control field comprising at least one of a link adaptation control subfield, a reserved subfield, an AC constraint subfield, or a RDG subfield.

5. The method of claim 4, wherein the link adaptation control subfield comprises 16 bits, wherein the reserved subfield comprises 14 bits, wherein the AC constraint subfield comprises 1 bit, and wherein the RDG subfield comprises 1 bit.

6. The method of claim 1, wherein the indication comprises a bit within the control field, the method further comprising evaluating the bit within the control field, and determining that the second frame is a HT control frame based on the bit.

7. The method of claim 1, wherein the location comprises at least one of the 1^st, 21st or 22nd bit in the control field and any of the 26th-30th bits in the control field.

8. The method of claim 1, wherein the wrapper frame is received in a physical layer protocol data unit (PPDU).

9. The method of claim 1, further comprising determining that the first frame comprises a VHT wrapper based on the frame control field.

10. The method of claim 1, wherein the first frame comprises a type field that indicates the first frame is a wrapper frame.

11. The method of claim 1, wherein the first frame comprises a subtype field that indicates the first frame is a wrapper for a control frame.

12. An apparatus for wireless communication, comprising:

a circuit configured to receive a first frame having a control field and a frame control field, wherein the control field and the frame control field are separate fields; and

a processor configured to;

determine whether the control field comprises a first type or a second type based at least in part on an indication in the control field, wherein the first type is very high throughput (VHT) and the second type is high throughput (HT); and

process the control field based on the determined type, wherein the first frame is a wrapper frame that comprises the control field and a second frame, and wherein the processor is further configured to process the second frame based on the determined type, wherein the wrapper frame comprises one or more bits in a location of the control field corresponding to a reserved subfield of the control field.

13. The apparatus of claim 12, wherein the location comprises at least one of the 1^st, 21st or 22nd bit in the control field and any of the 26th-30th bits in the control field.

14. The apparatus of claim 12, wherein the wrapper frame is received in a physical layer protocol data unit (PPDU).

15. The apparatus of claim 12, further comprising determining that the first frame comprises a VHT wrapper based on the frame control field.

16. The apparatus of claim 12, wherein the first frame comprises a type field that indicates the first frame is a wrapper frame.

17. The apparatus of claim 12, wherein the first frame comprises a subtype field that indicates the first frame is a wrapper for a control frame.

18. An apparatus for wireless communication, comprising:

a circuit configured to receive a first frame having a control field and a frame control field, wherein the control field and the frame control field are separate fields; and

a processor configured to;

determine whether the control field comprises a first type or a second type based at least in part on an indication in the control field, wherein the first type is very high throughput (VHT) and the second type is high throughput (HT); and

process the control field based on the determined type, wherein the first frame is a wrapper frame that comprises the control field and a second frame, and wherein the processor is further configured to process the second frame based on the determined type, wherein the indication comprises a bit within the control field, and wherein the processor is further configured to;

evaluate the bit within the control field; and

determine that the second frame is a VHT control frame based on the evaluation.

19. The apparatus of claim 18, wherein the control field further comprises at least one of a duration field, an address field, a carried frame control, or a FCS field.

20. The apparatus of claim 18, wherein the control field comprises a VHT control field comprising at least one of a link adaptation control subfield, a reserved subfield, an AC constraint subfield, or a RDG subfield.

21. The apparatus of claim 20, wherein the link adaptation control subfield comprises 16 bits, wherein the reserved subfield comprises 14 bits, wherein the AC constraint subfield comprises 1 bit, and wherein the RDG subfield comprises 1 bit.

22. An apparatus for wireless communication, comprising:

a circuit configured to receive a first frame having a control field and a frame control field, wherein the control field and the frame control field are separate fields; and

a processor configured to;

determine whether the control field comprises a first type or a second type based at least in part on an indication in the control field, wherein the first type is very high throughput (VHT) and the second type is high throughput (HT); and

process the control field based on the determined type, wherein the first frame is a wrapper frame that comprises the control field and a second frame, and wherein the processor is further configured to process the second frame based on the determined type, wherein the indication comprises a bit within the control field, and wherein the processor is further configured to;

evaluate the bit within the control field; and

determine that the second frame is a HT control frame based on the evaluation.

23. A user terminal for wireless communication, comprising:

an antenna;

a receiver configured to receive, via the antenna, a frame having a control field and a frame control field, wherein the control field and the frame control field are separate fields; and

a processor configured to;

determine whether the control field comprises a first type or a second type based at least in part on an indication in the control field, wherein the first type is very high throughput (VHT) and the second type is high throughput (HT); and

process the control field based on the determined type, wherein the frame is a wrapper frame that comprises the control field and another frame, and further comprising means for processing the other frame based on the determined type, wherein the wrapper frame comprises one or more bits in a location of the control field corresponding to a reserved subfield of the control field.