Stack signaling to application with lack of requested bandwidth

• US 8,509,265 B2
• Filed: 04/18/2012
• Issued: 08/13/2013
• Est. Priority Date: 05/12/2006
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Hassan, Amer A., Kuehnel, Thomas W., Wu, Deyun, Huitema, Christian, Frost, D. Gabriel
• Primary Examiner(s): Lee, Jae Y
• Application Number:
  US13/449,312
• Publication Number:
  US 20120201317A1
• Time in Patent Office: 482 Days
• Field of Search: None
• US Class Current: 370/480
• CPC Class Codes: H03M 1/12 Analogue/digital converters H03M1/001 – H03M1/10 take precedence
• CPC Class Codes: H03M 9/00 Parallel/series conversion or vice versa digital stores in which the information is moved stepwise per se G11C19/00
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2605 Symbol extensions, e.g. Zero Tail, Unique Word [UW]
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/1446 of transmission speed
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]

Abstract

A system for signaling an application when a requested data rate and Quality of Service cannot be achieved using OFDM wireless data transmission, and the application proceeds by either renegotiating QoS and data rate, or waiting until they requested rate and QoS are met.

Claims

1. A method comprising:

determining a noise level and a number of subchannels required to provide a data rate and a quality of service requested for a communication by a requestor; and

if a first number of subchannels having an energy level below the noise level is less than the required number of subchannels then;

taking a further action, otherwise;

performing, by a computing device, the communication via a second number of subchannels that is less than the first number of subchannels, the second number of subchannels selected based on the required number of subchannels.

2. The method of claim 1 further comprising mapping the data rate and the quality of service to a third number of subchannels and a maximum energy level for each.

3. The method of claim 2 wherein the mapping further comprises mapping the data rate and the quality of service to a power level.

4. The method of claim 1 wherein each of the first number of subchannels is selected based on its energy level compared to the noise level.

5. The method of claim 1 wherein the further action comprises increasing compression of data for the communication.

6. The method of claim 1 wherein the further action comprises selecting a new data rate or a new quality of service.

7. The method of claim 1 wherein the further action comprises signaling the requestor.

8. At least one computer storage device storing computer-executable instructions that, when executed by a computing device, cause the computing device to perform a method comprising:

determining a noise level and a number of subchannels required to provide a data rate and a quality of service requested for a communication by a requestor; and

if a first number of subchannels having an energy level below the noise level is less than the required number of subchannels then;

taking a further action, otherwise;

performing the communication via a second number of subchannels that is less than the first number of subchannels, the second number of subchannels selected based on the required number of subchannels.

9. The at least one computer storage device of claim 8, the method further comprising mapping the data rate and the quality of service to a third number of subchannels and a maximum energy level for each.

10. The at least one computer storage device of claim 9 wherein the mapping further comprises mapping the data rate and the quality of service to a power level.

11. The at least one computer storage device of claim 8 wherein each of the first number of subchannels is selected based on its energy level compared to the noise level.

12. The at least one computer storage device of claim 8 wherein the further action comprises increasing compression of data for the communication.

13. The at least one computer storage device of claim 8 wherein the further action comprises selecting a new data rate or a new quality of service.

14. The at least one computer storage device of claim 8 wherein the further action comprises signaling the requestor.

15. A system comprising:

a computing device configured for determining a noise level and a number of subchannels required to provide a data rate and a quality of service requested for a communication by a requestor; and

the computing device further configured for determining if a first number of subchannels having an energy level below the noise level is less than the required number of subchannels and, if so, then;

taking a further action, otherwise;

performing the communication via a second number of subchannels that is less than the first number of subchannels, the second number of subchannels selected based on the required number of subchannels.

16. The system of claim 15 the computing device further configured for mapping the data rate and the quality of service to a third number of subchannels and a maximum energy level for each.

17. The system of claim 16 wherein the mapping further comprises mapping the data rate and the quality of service to a power level.

18. The system of claim 15 wherein each of the first number of subchannels is selected based on its energy level compared to the noise level.

19. The system of claim 15 wherein the further action comprises increasing compression of data for the communication.

20. The system of claim 15 wherein the further action comprises selecting a new data rate or a new quality of service.