RATE-ADAPTIVE DATA STREAM MANAGEMENT SYSTEM AND METHOD FOR CONTROLLING THE SAME

• US 20150207840A1
• Filed: 01/06/2015
• Published: 07/23/2015
• Est. Priority Date: 01/21/2014
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: LEE, Yong Ju
• Granted Patent: US 9,954,921 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 65/80 Responding to QoS

Abstract

Disclosed is a rate-adaptive data stream management system (DSMS) which is a precedence task, which has a descendent task, and a plurality of data channels and a plurality of feedback channels, the system including: a feedback analyzer which analyzes a control command transmitted from the descendent task; and a data channel selector which controls transmission of a data stream through the data channel with the descendent task based on the analysis result.

Claims

1. A rate-adaptive data stream management system (DSMS) which is a precedence task, which has a descendent task, a plurality of data channels and a plurality of feedback channels, the system comprising:

a feedback analyzer which analyzes a control command transmitted from the descendent task; and

a data channel selector which controls transmission of a data stream through the data channel with the descendent task based on the analysis result.

2. The system of claim 1, wherein the feedback analyzer verifies at least one command of an ace command, a victim command and a hidden command included in the control command.

3. The system of claim 2, wherein the data channel selector transmits the data stream to the descendent task through the data channel when the ace command is included in the analysis result.

4. The system of claim 2, wherein the data channel selector releases the data channel when the victim command is included in the analysis result.

5. The system of claim 2, wherein the data channel selector sets a new data channel and transmits the data stream to the descendent task through the set new data channel when the hidden command is included in the analysis result.

6. A rate-adaptive data stream management system (DSMS) which is a descendent task, which has a precedence task, and a plurality of data channels and a plurality of feedback channels, the system comprising:

a data receiver which receives a data stream transmitted from the precedence task;

a statistical collector which collects statistical information on the data stream received through the data receiver; and

a flow controller which generates a control command including information regarding whether to keep the data channel connected with the precedence task based on the statistical information on the data stream and transmits the generated control command to the precedence task.

7. The system of claim 6, wherein the statistical information on the data stream includes at least one of a receiving amount and a receiving rate of data for the data stream.

8. The system of claim 6, wherein the flow controller generates the control command every predetermined cycle or when the existing connection is terminated.

9. The system of claim 6, wherein the control command includes any one command of an ace command which is information for keeping a data channel connected between the precedence task and the descendent task, a victim command which is information for releasing the data channel, and a hidden command which is information for setting a new data channel.

10. A method for controlling a rate-adaptive data stream management system (DSMS) which is a precedence task, which has a descendent task, and a plurality of data channels and a plurality of feedback channels, the method comprising:

analyzing, by the rate-adaptive DSMS, a control command transmitted from the descendent task; and

controlling, by the rate-adaptive DSMS, transmission of a data stream through the data channel with the descendent task based on the analysis result.

11. The method of claim 10, wherein the controlling of transmission of the data stream through the data channel includes:

aligning a connection of data to be transmitted based on the received analysis result;

verifying a predetermined number of times or not during a predetermined cycle;

newly setting a data channel and transmitting a data stream to the descendent task through the set new data channel in the case of the predetermined number of times during the predetermined cycle as the verification result; and

transmitting the data stream to the descendent task through the data channel, which is kept at present, based on current connection information in the case of not the predetermined number of times during the predetermined cycle as the verification result.

12. A method for controlling a rate-adaptive data stream management system (DSMS) which is a descendent task, which has a precedence task, and a plurality of data channels and a plurality of feedback channels, the method comprising:

receiving, by the rate-adaptive DSMS, a data stream transmitted from the precedence task;

collecting, by the rate-adaptive DSMS, statistical information on the received data stream;

generating, by the rate-adaptive DSMS, a control command including information regarding whether to keep the data channel connected with the precedence task based on the statistical information on the data stream; and

transmitting, by the rate-adaptive DSMS, the generated control command to the precedence task.