Method of optimizing portions of a frame

• US 9,871,617 B2
• Filed: 09/23/2016
• Issued: 01/16/2018
• Est. Priority Date: 07/23/2004
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Teague, Edward Harrison, Agrawal, Avneesh
• Primary Examiner(s): HAILE, AWET A
• Application Number:
  US15/274,858
• Publication Number:
  US 20170012734A1
• Time in Patent Office: 480 Days
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• 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 1/0033 arrangements specific to the transmitter
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

Methods and apparatus for transmitting modulation parameters are disclosed. The apparatus and methods provide determination of when a particular modulation scheme is used by an access point. One or more modulation parameters associated with the particular modulation scheme and one or more timing values associated with the particular modulation scheme are then determined and transmitted using a portion of a broadcast channel transmitted by the access point.

Claims

1. A method for communicating modulation parameters in a wireless communication system, the method comprising:

determining when a particular modulation scheme is to be used;

determining one or more modulation parameters associated with the particular modulation scheme and timing information associated with the particular modulation scheme, the timing information including information associated with indicating when the particular modulation scheme will take effect and a time duration of the particular modulation scheme; and

transmitting the determined one or more modulation parameters and timing information using a portion of a transmission decodable by multiple users.

2. The method of claim 1, wherein the one or more modulation parameters include at least one of:

a cyclic prefix length or an indication of a change of a cyclic prefix length.

3. The method of claim 1, wherein the modulation parameters include a bandwidth of a payload to be transmitted.

4. An apparatus for communicating modulation parameters in a wireless communication system, the apparatus comprising:

means for determining when a particular modulation scheme is to be used;

means for determining one or more modulation parameters associated with the particular modulation scheme and timing information associated with the particular modulation scheme, the timing information including information associated with indicating when the particular modulation scheme will take effect and a time duration of the particular modulation scheme; and

means for transmitting the determined one or more modulation parameters and timing information using a portion of a transmission decodable by multiple users.

5. The apparatus of claim 4, wherein the one or more modulation parameters include at least one of:

a cyclic prefix length or an indication of a change of a cyclic prefix length.

6. The apparatus of claim 4, wherein the modulation parameters include a bandwidth of a payload to be transmitted.

7. An apparatus for communicating modulation parameters in a wireless communication system, the apparatus comprising:

at least one processor configured to;

determine when a particular modulation scheme is to be used;

determine one or more modulation parameters associated with the particular modulation scheme and timing information associated with the particular modulation scheme, the timing information including information associated with indicating when the particular modulation scheme will take effect and a time duration of the particular modulation scheme; and

transmit the determined one or more modulation parameters and timing information using a portion of a transmission decodable by multiple users; and

a memory coupled with the at least one processor.

8. The apparatus of claim 7, wherein the one or more modulation parameters include at least one of:

a cyclic prefix length or an indication of a change of a cyclic prefix length.

9. The apparatus of claim 7, wherein the modulation parameters include a bandwidth of a payload to be transmitted.

10. A non-transitory computer readable medium having computer executable code stored thereon for communicating modulation parameters in a wireless communication system, comprising:

code for determining when a particular modulation scheme is to be used;

code for determining one or more modulation parameters associated with the particular modulation scheme and timing information associated with the particular modulation scheme, the timing information including information associated with indicating when the particular modulation scheme will take effect and a time duration of the particular modulation scheme; and

code for transmitting the determined one or more modulation parameters and timing information using a portion of a transmission decodable by multiple users.

11. The computer readable medium of claim 10, wherein the one or more modulation parameters include at least one of:

a cyclic prefix length or an indication of a change of a cyclic prefix length.

12. The computer readable medium of claim 10, wherein the modulation parameters include a bandwidth of a payload to be transmitted.