System and method for implementing suppression in a communications environment

• US 20060251063A1
• Filed: 05/03/2005
• Published: 11/09/2006
• Est. Priority Date: 05/03/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Bordonaro, Frank G., Fussell, John P., Fussell, Barry V.
• Granted Patent: US 7,403,501 B2
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 47/431 using padding or de-padding

Abstract

A method for communicating data is provided that includes receiving a plurality of cells associated with a communications flow and determining whether one or more of the cells included in the flow should be suppressed, whereby a selected one or more of the cells are suppressed. The method also includes identifying cells that cannot be suppressed and suppressing portions thereof.

Claims

1. An apparatus for communicating data, comprising:

a cell site element associated with a Node B and operable to receive a plurality of cells associated with a communications flow, wherein the cell site element is further operable to determine whether one or more of the cells included in the flow should be suppressed, and wherein the cell site element is further operable to suppress a selected one or more of the cells, and wherein the cell site element is operable to identify cells that cannot be suppressed and to suppress portions thereof.

2. The apparatus of claim 1, wherein over a time interval the cell site element is further operable to bundle the selected cells included in the flow in an IP packet to be communicated to a next destination.

3. The apparatus of claim 2, wherein the selected cells may be received and evaluated in order to restore a plurality of bits associated with the communications flow.

4. The apparatus of claim 2, wherein the portions that are suppressed reflect data segments associated with ATM headers, ATM padding, or ATM trailers.

5. The apparatus of claim 4, wherein the ATM headers are mapped to one or more backhaul values.

6. The apparatus of claim 2, wherein the cell site element is operable to suppress unused portions of ATM payloads associated with the flow.

7. The apparatus of claim 2, wherein the IP packet is demultiplexed at the next destination and the selected cells are rebuilt by reconstructing ATM cell headers and cell payloads.

8. The apparatus of claim 2, wherein the cell site element is operable to evaluate bit positions of a current cell to determine an end of a frame.

9. The apparatus of claim 2, wherein the cell site element includes a suppression element that is operable to perform the suppression operations.

10. The apparatus of claim 2, further comprising:

an aggregation node associated with a RNC and operable to communicate with the cell site element and to receive the IP packet.

11. The apparatus of claim 2, wherein the communications flow is associated with asynchronous transfer mode (ATM) adaptation layer zero (AAL0).

12. A method for communicating data, comprising:

receiving a plurality of cells associated with a communications flow;

determining whether one or more of the cells included in the flow should be suppressed;

suppressing a selected one or more of the cells; and

identifying cells that cannot be suppressed and to suppress portions thereof.

13. The method of claim 12, further comprising:

bundling, over a time interval, the selected cells included in the flow in an IP packet to be communicated to a next destination.

14. The method of claim 13, wherein the selected cells may be received and evaluated in order to restore a plurality of bits associated with the communications flow.

15. The method of claim 13, wherein the portions that are suppressed reflect data segments associated with ATM headers, ATM padding, or ATM trailers.

16. The method of claim 15, wherein the ATM headers are mapped to one or more backhaul values.

17. The method of claim 13, further comprising:

suppressing unused portions of ATM payloads associated with the flow.

18. The method of claim 13, further comprising:

evaluating bit positions of a current cell to determine an end of a frame.

19. Software for communicating data, the software being embodied in a computer readable medium and comprising computer code such that when executed is operable to:

receive a plurality of cells associated with a communications flow;

determine whether one or more of the cells included in the flow should be suppressed;

suppress a selected one or more of the cells; and

identify cells that cannot be suppressed and to suppress portions thereof.

20. The medium of claim 19, wherein the code is further operable to:

bundle, over a time interval, the selected cells included in the flow in an IP packet to be communicated to a next destination.

21. The medium of claim 20, wherein the selected cells may be received and evaluated in order to restore a plurality of bits associated with the communications flow.

22. The medium of claim 20, wherein the portions that are suppressed reflect data segments associated with ATM headers, ATM padding, or ATM trailers.

23. The medium of claim 22, wherein code is further operable to:

map the ATM headers to one or more backhaul values.

24. The medium of claim 20, wherein the code is further operable to:

suppress unused portions of ATM payloads associated with the flow.

25. A system for communicating data, comprising:

means for receiving a plurality of cells associated with a communications flow;

means for determining whether one or more of the cells included in the flow should be suppressed;

means for suppressing a selected one or more of the cells; and

means for identifying cells that cannot be suppressed and to suppress portions thereof.

26. The system of claim 25, further comprising:

means for bundling, over a time interval, the selected cells included in the flow in an IP packet to be communicated to a next destination.

27. The system of claim 26, wherein the selected cells may be received and evaluated in order to restore a plurality of bits associated with the communications flow.

28. The system of claim 26, wherein the portions that are suppressed reflect data segments associated with ATM headers, ATM padding, or ATM trailers.

29. The system of claim 28, wherein the ATM headers are mapped to one or more backhaul values.

30. The system of claim 26, further comprising:

means for suppressing unused portions of ATM payloads associated with the flow.