Method, apparatus and system of managing an encoder output rate based upon wireless communication link feedback

• US 9,386,481 B2
• Filed: 12/24/2009
• Issued: 07/05/2016
• Est. Priority Date: 12/24/2009
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Li, Guoqing, Tsvetkov, Mikhail S., Belogolovy, Andrey, Somayazulu, Vallabhajosyula S., Shen, Lei
• Primary Examiner(s): Lee, Andrew C
• Application Number:
  US13/514,574
• Publication Number:
  US 20120300645A1
• Time in Patent Office: 2,385 Days
• Field of Search: 370/248, 370/254, 370/329, 370/328, 370/331, 370/412, 370/446
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04L 45/42 Centralised routing
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]

Abstract

Machine-readable media, methods, apparatus and system for managing an encoder output rate at least partially based upon wireless communication link feedback are described. In some embodiments, a device driver of the system may generate link information indicating quality of a wireless communication link between the system and another system, wherein the link information is generated at least partially based upon at least one of media access layer (MAC) information and physical layer information of the system. A system managing entity of the system may manage an output rate of an encoder of the system at least partially based upon the link information.

Claims

1. A method, comprising:

obtaining link information indicating quality of a wireless communication link between a system and another system, wherein the link information is at least partially based upon at least one type of information selected from a group consisting of media access control (MAC) layer information and physical layer information of the system; and

managing an output rate of an encoder of the system at least partially based upon the link information, wherein the managing comprises, when the link information indicates that the quality of the wireless communication link is not in a critical condition, matching the output rate of the encoder with a transmission rate at which the system transmits data to the another system on the wireless communication link, and, when the link information indicates that the quality of the wireless communication link is in the critical condition, reducing the output rate of the encoder to be lower than the transmission rate at which the system transmits data to the another system on the wireless communication link.

2. The method of claim 1, wherein the link information is at least partially based upon per stream of data transmitted from the system to the another system on the wireless communication link.

3. The method of claim 1, wherein the link information is obtained through requesting and receiving the link information from a MAC layer management entity of the system.

4. The method of claim 1, wherein the link information is obtained through receiving the link information initiatively sent from a MAC layer management entity of the system.

5. The method of claim 1, wherein the link information includes at least one parameter selected from a group consisting of the transmission rate, a packet error rate, and a link condition parameter, and wherein the link condition parameter indicates a possibility that the wireless communication link is in the critical condition.

6. A non-transitory storage medium having stored thereon instructions that, when executed by a machine, result in a device driver, the device driver comprising:

a media access control (MAC) layer management entity to generate link information indicating quality of a wireless communication link between the system and another system, wherein the link information is generated at least partially based upon at least one type of information selected from a group consisting of MAC layer information and physical layer information of the system, and wherein the link information is configured to allow managing an output rate of an encoder of the system, relative to a transmission rate at which the system transmits data to the another system on the wireless communication link, based on whether or not the link information indicates that the quality of the wireless communication link is in a critical condition.

7. The non-transitory storage medium of claim 6, wherein the link information is generated at least partially based upon per stream of data transmitted from the system to the another system on the wireless communication link.

8. The non-transitory storage medium of claim 6, wherein the link information includes at least one parameter selected from a group consisting of the transmission rate, a packet error rate, and a link condition parameter.

9. The non-transitory storage medium of claim 6, wherein the MAC layer management entity is to generate the link information through tracking the transmission rate on the wireless communication link between the system and the another system.

10. The non-transitory storage medium of claim 6, wherein the MAC layer management entity is to generate the link information through monitoring signal to noise rates (SNRs) over a time period, and calculating a link condition parameter at least partially based upon the SNRs, wherein the link condition parameter indicates a possibility that the wireless communication link is in the critical condition.

11. The non-transitory storage medium of claim 6, wherein the MAC layer management entity is to generate the link information upon a request from an apparatus of the system which manages the output rate of the encoder.

12. The non-transitory storage medium of claim 6, wherein the MAC layer management entity is to generate the link information when the wireless communication link is in the critical condition.

13. A system, comprising:

a transceiver to transceive data via a wireless communication link between the system and another system;

a chipset;

a device driver to generate link information indicating quality of said wireless communication link, wherein the link information is at least partially based upon at least one type of information selected from a group consisting of media access control (MAC) layer information and physical layer information of the system; and

a station management entity to manage an output rate of an encoder of the system at least partially based upon the link information, wherein said station management entity is to, when the link information indicates that the quality of the wireless communication link is not in a critical condition, match the output rate of the encoder with a transmission rate at which the system transmits data to the another system on the wireless communication link, said station management entity is to, when the link information indicates that the quality of the wireless communication link is in the critical condition, reduce the output rate of the encoder to be lower than the transmission rate at which the system transmits data to the another system on the wireless communication link.

14. The system of claim 13, wherein the link information is at least partially based on per stream of data transmitted from the system to the another system on the wireless communication link.

15. The system of claim 13, wherein the link information comprises at least one parameter selected from a group consisting of the transmission rate, a packet error rate, and a link condition parameter.

16. The system of claim 13, wherein the device driver is to send the link information to the station management entity, upon a request from the station management entity.

17. The system of claim 13, wherein the device driver is to send the link information to the station management entity when the wireless communication link is in the critical condition.

18. A non-transitory storage medium having stored thereon instructions that, when executed by a machine, result in:

obtaining link information indicating quality of a wireless communication link between a system and another system, wherein the link information is at least partially based upon at least one type of information selected from a group consisting of media access control (MAC) layer information and physical layer information of the system; and

managing an output rate of an encoder of the system at least partially based upon the link information, wherein the managing comprises, when the link information indicates that the quality of the wireless communication link is not in a critical condition, matching the output rate of the encoder with a transmission rate at which the system transmits data to the another system on the wireless communication link, and, when the link information indicates that quality of the wireless communication link is in the critical condition, reducing the output rate of the encoder to be lower than the transmission rate at which the system transmits data to the another system on the wireless communication link.

19. The non-transitory storage medium of claim 18, wherein the link information is at least partially based upon per stream of data transmitted from the system to the another system on the wireless communication link.

20. The non-transitory storage medium of claim 18, wherein the link information is obtained through requesting and receiving the link information from a MAC layer management entity of the system.

21. The non-transitory storage medium of claim 18, wherein the link information is obtained through receiving the link information initiatively sent from a MAC layer management entity of the system.

22. The non-transitory storage medium of claim 18, wherein the link information includes at least one parameter selected from a group consisting of the transmission rate, a packet error rate, and a link condition parameter, and wherein the link condition parameter indicates a possibility that the wireless communication link is in the critical condition.