Method and system for adaptive modulation scheduling

• US 20040208121A1
• Filed: 04/14/2004
• Published: 10/21/2004
• Est. Priority Date: 04/21/2003
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Chien, Jen-Chieh, Lin, Dorothy D., Gin, Alan, Brescia, Rocco Jr.
• Granted Patent: US 7,535,863 B2
• Time in Patent Office: Days
• US Class Current: 370/230
• CPC Class Codes: H04B 7/18582 Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4621 Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite

Abstract

Provided is a method and system for transmitting MPEG frames between a DOCSIS based satellite modem termination system (SMTS) and a corresponding satellite modem (SM) system. The method includes identifying at least one data stream requiring transmission between the SMTS and the SM, the data stream including one or more MPEG frames. Next, the MPEG frames are organized within SMTS data queues based upon predetermined parameters and then transmitted based upon their organization within the data queues.

Claims

1. A method for transmitting moving pictures experts group (MPEG) frames between a data over cable services interface specification (DOCSIS) based satellite modem termination system (SMTS) and a corresponding satellite modem (SM) system, the method comprising:

identifying at least one data stream requiring transmission between the SMTS and the SM, the data stream including one or more MPEG frames;

organizing the MPEG frames within SMTS data queues in accordance with predetermined parameters; and

transmitting the MPEG frames based upon their organization within the data queues.

2. The method of claim 1, further comprising associating the transmitted frames with the predetermined parameters.

3. The method of claim 1, wherein the organizing includes processing the data queues based upon predetermined priorities.

4. The method of claim 3, wherein the predetermined priorities include at least one from group including (i) a highest to lowest rate order, (ii) a highest to lowest priority order, and (iii) a lowest to highest rate order.

5. The method of claim 1, wherein the organizing is based upon destination address to queue mapping.

6. The method of claim 1, wherein the predetermined parameters include at least one from the group including forward error correction rate, modulation type, and signal to noise ratio.

7. The method of claim 6, wherein the predetermined parameters are associated with downlink transmissions.

8. An apparatus for transmitting moving pictures experts group (MPEG) frames between a data over cable services interface specification (DOCSIS) based satellite modem termination system (SMTS) and a corresponding satellite modem (SM) system, the apparatus comprising:

means for identifying at least one data stream requiring transmission between the SMTS and the SM, the data stream including one or more MPEG frames;

means for organizing the MPEG frames within SMTS data queues in accordance with predetermined parameters; and

means for transmitting the MPEG frames based upon their organization within the data queues.

9. The apparatus of claim 8, further comprising means for associating the transmitted frames with the predetermined parameters.

10. The apparatus of claim 8, wherein the means for organizing includes assessing queue block priorities.

11. The apparatus of claim 8, wherein the predetermined priorities include at least one from group including (i) a highest to lowest rate order, (ii) a highest to lowest priority order, and (iii) a lowest to highest rate order.

12. The apparatus of claim 8, wherein the means for organizing is based upon destination address to queue mapping.

13. The apparatus of claim 12, wherein the mapping includes a content addressable memory scheme.

14. The apparatus of claim 8, wherein the predetermined parameters include at least one from the group including forward error correction rate, modulation type, and signal to noise ratio.

15. The apparatus of claim 14, wherein the predetermined parameters are associated with downlink transmissions.