Systems, methods and apparatus for determining control field and modulation coding scheme information

• US 9,806,848 B2
• Filed: 09/28/2011
• Issued: 10/31/2017
• 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): LIU, JUNG
• Application Number:
  US13/247,144
• Publication Number:
  US 20120257606A1
• Time in Patent Office: 2,225 Days
• Field of Search: 370203, 370204-215, 370229-240, 370310-394, 3703951, 3703953, 3703954, 37039541, 37039542, 3703955, 37039552, 370431-529, 370523-520
• 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 1/0039 other detection of signalling, e.g. detection of TFCI explicit signalling H04L1/0046, H04L27/0012 and H04L25/0262 take precedence

Abstract

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

Claims

1. A method of wireless communication by an apparatus, comprising:

receiving, from a wireless node, a frame comprising an indicator signifying that the frame is unsolicited, the frame further comprising first and second fields;

identifying a most recent transmission, from the apparatus to the wireless node, having fields that match the first and second fields; and

determining a modulation coding scheme (MCS) based at least on the identified transmission and the received indicator.

2. The method of claim 1, wherein the first and second fields comprise at least two of the following field types:

group ID, beamforming, and MCS.

3. The method of claim 2, wherein the determination comprises estimating the MCS for either single user multiple input multiple output communication (MIMO) or multiple user MIMO communication based on at least one of the group ID field or the beamforming field.

4. The method of claim 3, wherein estimating the MCS for single user MIMO comprises estimating the MCS for either open loop single user MIMO or transmit beam forming single user MIMO.

5. The method of claim 1, further comprising:

transmitting data using the determined MCS.

6. The method of claim 1, further comprising:

transmitting data indicative of the determined MCS.

7. The method of claim 1, further comprising transmitting the determined MCS to the wireless node.

9. The apparatus of claim 5, wherein the first and second fields comprise at least two of the following field types:

group ID, beamforming, MCS.

10. The apparatus of claim 9, wherein the processing system is further configured to determine the MCS by estimating the MCS for either single user multiple input multiple output communication (MIMO) or multiple user MIMO communication based on at least one of the group ID field or the beamforming field.

11. The apparatus of claim 10, wherein the processing system is further configured to estimate the MCS for single user MIMO by estimating the MCS for either open loop single user MIMO or transmit beam forming single user MIMO.

8. An apparatus for wireless communication, comprising:

a receiver configured to receive, from a wireless node, a frame comprising an indicator signifying that the frame is unsolicited, the frame further comprising first and second fields; and

a processing system configured to;

identify a most recent transmission, from the apparatus to the wireless node, having fields that match the first and second fields; and

determine a modulation coding scheme (MCS) based at least on the identified transmission and the received indicator.

12. The apparatus of claim 8 further comprising:

a transmitter configured to transmit data using the determined MCS.

13. The apparatus of claim 8 further comprising:

a transmitter configured to transmit data indicative of the determined MCS.

14. The apparatus of claim 8, further comprising a transmitter configured to transmit the determined MCS to the wireless node.

15. An apparatus for wireless communication, comprising:

means for receiving, from a wireless node, a frame comprising an indicator signifying that the frame is unsolicited, the frame further comprising first and second fields;

means for identifying a most recent transmission, from the apparatus to the wireless node, having fields that match the first and second fields; and

means for determining a modulation coding scheme (MCS) based at least on the identified transmission and the received indicator.

16. The apparatus of claim 15, wherein the first and second fields comprise at least two of the following field types:

group ID, beamforming, and MCS.

17. The apparatus of claim 16, wherein the means for determining comprises means for estimating the MCS for either single user multiple input multiple output communication (MIMO) or multiple user MIMO communication based on at least one of the group ID field or the beamforming field.

18. The apparatus of claim 17, wherein the means for estimating the MCS for single user multiple input multiple output communication (MIMO) comprises means for estimating the MCS for either open loop single user MIMO or transmit beam forming single user MIMO.

19. The apparatus of claim 15 further comprising:

means for transmitting data using the determined MCS.

20. The apparatus of claim 15 further comprising:

means for transmitting data indicative of the determined MCS.

21. The apparatus of claim 15, further comprising means for transmitting the determined MCS to the wireless node.

22. A non-transitory computer readable medium comprising instructions that when executed cause an apparatus to:

receive, from a wireless node, a frame comprising an indicator signifying that the frame is unsolicited, the frame further comprising first and second fields;

identify a most recent transmission, from the apparatus to the wireless node, having fields that match the first and second fields; and

determine a modulation coding scheme (MCS) based at least on the identified transmission and the received indicator.

23. A wireless node for wireless communication, comprising:

an antenna;

a receiver configured to receive, via the antenna and from another wireless node, a frame comprising an indicator signifying that the frame is unsolicited, the frame further comprising first and second fields; and

a processing system configured to;

identify a most recent transmission, from the wireless node to the other wireless node, having fields that match the first and second fields; and

determine a modulation coding scheme (MCS) based at least on the identified transmission and the received indicator.