Adjustment of transmission data rate based on data errors and/or latency

• US 7,702,006 B2
• Filed: 07/05/2005
• Issued: 04/20/2010
• Est. Priority Date: 07/05/2005
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Kunii, Atsushi, Shirahama, Takayuki
• Primary Examiner(s): Ahn; Sam K
• Application Number:
  US11/172,986
• Publication Number:
  US 20070009015A1
• Time in Patent Office: 1,750 Days
• Field of Search: 375/219, 375/221, 375/224, 375/225, 375/227, 375/228, 375/358, 455/69
• US Class Current: 375/221
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04L 1/0018 based on latency requirement
• CPC Class Codes: H04L 1/203 Details of error rate determination, e.g. BER, FER or WER
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

Aspects of the present disclosure are directed to providing flexible and efficient communication by dynamically adjusting a transmit data rate in response to data status feedback. Such feedback may include information regarding data errors and/or latency. A first communication node communicates with a second communication node and sends data at an initial data rate. The transmit data rate is then selectively adjusted based on data status feedback received from the second communication node or other destination.

Claims

1. A computer-readable storage medium that stores a set of computer-executable instructions which when executed by a computer perform a method for transmitting data over a network at an adjustable data rate, the method comprising:

sending, by a data transmitter, data comprising video data at a data rate;

monitoring for a determined period of time a status of the data as received by a destination, wherein the determined period of time is based on the status of the data received by the destination and wherein the status of the data comprises latency information;

adjusting a video quality of the video data based on the data rate; and

choosing a new data rate as, after the determined period of time, one from among increasing the data rate, decreasing the data rate, and maintaining the data rate based on the status of the data.

2. The computer-readable storage medium of claim 1, wherein choosing comprises choosing to decrease the data rate responsive to the latency information indicating a latency that exceeds a threshold amount of latency.

3. The computer-readable storage medium of claim 1, further comprising increasing the data rate responsive to determining, based on the status of the data, that there are no data errors and no high latency during the determined period of time.

4. A method for transmitting data over a network at an adjustable data rate, the method comprising:

sending, by a data transmitter, data comprising video data at a data rate;

monitoring for a determined period of time a status of the data as received by a destination, wherein the determined period of time is based on the status of the data received by the destination and wherein the status of the data comprises latency information;

adjusting a video quality of the video data based on the data rate; and

choosing a new data rate as, after the determined period of time, one from among increasing the data rate, decreasing the data rate, and maintaining the data rate based on the status of the data.

5. The method of claim 4, wherein choosing comprises choosing to decrease the data rate responsive to the latency information indicating a latency that exceeds a threshold amount of latency.

6. The method of claim 4, further comprising increasing the data rate responsive to determining, based on the status of the data, that there are no data errors and no high latency during the determined period of time.

7. A system for transmitting data over a network at an adjustable data rate, the system comprising:

a transmitter configured to transmit data comprising video data at a data rate;

a processor configured to monitor, for a determined period of time, a status of the data as received by a destination, wherein the determined period of time is based on the status of the data received by the destination and wherein the status of the data comprises latency information;

the processor further configured to adjust a video quality of the video data based on the data rate; and

the processor further configured to choose a new data rate as, after the determined period of time, one from among increasing the data rate, decreasing the data rate, and maintaining the data rate based on the status of the data.

8. The system of claim 7, wherein the processor being further configured to choose comprises the processor being further configured to decrease the data rate responsive to the latency information indicating a latency that exceeds a threshold amount of latency.

9. The system of claim 7, wherein the processor being further configured to choose comprises the processor being further configured to increase the data rate responsive to determining, based on the status of the data, that there are no data errors and no high latency during the determined period of time.