SYSTEMS AND METHODS FOR REORDERING DATA RECEIVED FROM A PLURALITY OF RADIO ACCESS TECHNOLOGIES (RATs)

• US 20170325124A1
• Filed: 04/24/2017
• Published: 11/09/2017
• Est. Priority Date: 05/03/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Mitra, Alok, Kumar, Vaibhav, Maheshwari, Shailesh, Babbar, Uppinder, Xiao, Gang, Kumar, Vanitha, Mudireddy, Srinivas Reddy, Krishnamurthy, Arunn
• Granted Patent: US 10,764,781 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering
• CPC Class Codes: H04L 47/34 ensuring sequence integrity, e.g. using sequence numbers
• CPC Class Codes: H04L 47/41 by acting on aggregated flows or links
• CPC Class Codes: H04L 49/9057 Arrangements for supporting packet reassembly or resequencing
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints

Abstract

A method for reordering data by an electronic device is described, including receiving a first set of data packets via a first radio access technology (RAT). The method also includes receiving a second set of data packets via a second RAT. The first and second sets of data packets are from a data stream. The method further includes providing at least a portion of the first set of data packets or of the second set of data packets to an application processor. The method additionally includes buffering, in application processor memory, the at least the portion of the first set of data packets or the at least the portion of the second set of data packets. The method also includes reordering the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

Claims

1. A method for reordering data by an electronic device, the method comprising:

receiving, by a modem processor, a first set of data packets via a first radio access technology (RAT);

receiving, by the modem processor, a second set of data packets via a second radio access technology (RAT), wherein the first set of data packets and the second set of data packets are from a data stream;

providing, by the modem processor, at least a portion of the first set of data packets or at least a portion of the second set of data packets to an application processor;

buffering, in application processor memory, the at least the portion of the first set of data packets or the at least the portion of the second set of data packets; and

reordering the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

2. The method of claim 1, wherein reordering the at least the portion of the first set of data packets or the at least the portion of the second set of data packets comprises:

determining, by the modem processor, a first reordering information or a second reordering information based on sequence numbering of the portion of the first set of data packets or of the portion of the second set of data packets; and

providing, by the modem processor, the first reordering information for the at least the portion of the first set of data packets or the second reordering information for the at least the portion of the second set of data packets to the application processor.

3. The method of claim 2, wherein the first reordering information or the second reordering information comprises one or more completion events, and wherein providing the first reordering information or the second reordering information comprises sending, by the modem processor, the first reordering information or the second reordering information in an order for packet consumption by the application processor.

4. The method of claim 2, wherein determining the first reordering information or the second reordering information comprises reordering an out of order event ring based on the sequence numbering.

5. The method of claim 2, wherein the at least the portion of the first set of data packets is a first aggregated set of packets in contiguous order or the at least the portion of the second set of data packets is a second aggregated set of packets in contiguous order.

6. The method of claim 5, further comprising determining the first reordering information or the second reordering information by determining a first sequence number and a last sequence number for the first aggregated set of packets or for the second aggregated set of packets.

7. The method of claim 2, wherein the at least the portion of the first set of data packets or the at least the portion of the second set of data packets are provided to an application processor for storage in a single frame regardless of whether the at least the portion of the first set of data packets or the at least the portion of the second set of data packets are in contiguous order, and wherein the method further comprises determining the first reordering information or the second reordering information by determining a length, an offset, and an end indicator for at least a contiguous portion of a first aggregated set of packets or for at least a contiguous portion of a second aggregated set of packets.

8. The method of claim 1, further comprising providing, by the modem processor, a first reordering information for the at least the portion of the first set of data packets or a second reordering information for the at least the portion of the second set of data packets to the application processor.

9. The method of claim 8, wherein the first reordering information or the second reordering information comprises a sequence indicator for each of the data packets of the at least the portion of the first set of data packets or the at least the portion of the second set of data packets, a bearer indicator for each of the data packets of the at least the portion of the first set of data packets or the at least the portion of the second set of data packets, and a link indicator for each of the data packets of the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

10. The method of claim 1, further comprising:

detecting, by the modem processor, a flushing condition; and

providing, by the modem processor, a flush command to the application processor.

11. The method of claim 1, further comprising controlling, by the modem processor, reordering logic in the application processor in order to perform one or more of stopping, starting, and flushing out of order buffers in the application processor memory.

12. An electronic device, comprising:

a modem processor configured to receive a first set of data packets via a first radio access technology (RAT), to receive a second set of data packets via a second radio access technology (RAT), wherein the first set of data packets and the second set of data packets are from a data stream, and to provide at least a portion of the first set of data packets or at least a portion of the second set of data packets to an application processor; and

application processor memory configured to buffer the at least the portion of the first set of data packets or the at least the portion of the second set of data packets, wherein the electronic device is configured to reorder the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

13. The electronic device of claim 12, wherein the modem processor is configured to reorder the at least the portion of the first set of data packets or the at least the portion of the second set of data packets by:

determining a first reordering information or a second reordering information based on sequence numbering of the portion of the first set of data packets or of the portion of the second set of data packets; and

providing the first reordering information for the at least the portion of the first set of data packets or the second reordering information for the at least the portion of the second set of data packets to the application processor.

14. The electronic device of claim 13, wherein the first reordering information or the second reordering information comprises one or more completion events, and wherein the modem processor is configured to provide the first reordering information or the second reordering information by sending the first reordering information or the second reordering information in an order for packet consumption by the application processor.

15. The electronic device of claim 13, wherein the modem processor is configured to determine the first reordering information or the second reordering information by reordering an out of order event ring based on the sequence numbering.

16. The electronic device of claim 13, wherein the at least the portion of the first set of data packets is a first aggregated set of packets in contiguous order or the at least the portion of the second set of data packets is a second aggregated set of packets in contiguous order.

17. The electronic device of claim 16, wherein the modem processor is configured to determine the first reordering information or the second reordering information by determining a first sequence number and a last sequence number for the first aggregated set of packets or for the second aggregated set of packets.

18. The electronic device of claim 13, wherein the modem processor is configured to provide the at least the portion of the first set of data packets or the at least the portion of the second set of data packets to the application processor for storage in a single frame regardless of whether the at least the portion of the first set of data packets or the at least the portion of the second set of data packets are in contiguous order, and wherein the modem device is configured to determine the first reordering information or the second reordering information by determining a length, an offset, and an end indicator for at least a contiguous portion of a first aggregated set of packets or for at least a contiguous portion of a second aggregated set of packets.

19. The electronic device of claim 12, wherein the modem processor is configured to provide a first reordering information for the at least the portion of the first set of data packets or a second reordering information for the at least the portion of the second set of data packets to the application processor.

20. The electronic device of claim 19, wherein the first reordering information or the second reordering information comprises a sequence indicator for each of the data packets of the at least the portion of the first set of data packets or the at least the portion of the second set of data packets, a bearer indicator for each of the data packets of the at least the portion of the first set of data packets or the at least the portion of the second set of data packets, and a link indicator for each of the data packets of the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

21. The electronic device of claim 12, wherein the modem processor is configured to detect a flushing condition, and to provide a flush command to the application processor.

22. The electronic device of claim 12, wherein the modem processor is configured to control reordering logic in the application processor in order to perform one or more of stopping, starting, and flushing out of order buffers in the application processor memory.

23. A non-transitory tangible computer-readable medium storing computer executable code, comprising:

code for causing an electronic device to receive, by a modem processor, a first set of data packets via a first radio access technology (RAT);

code for causing the electronic device to receive, by the modem processor, a second set of data packets via a second radio access technology (RAT), wherein the first set of data packets and the second set of data packets are from a data stream;

code for causing the electronic device to provide, by the modem processor, at least a portion of the first set of data packets or at least a portion of the second set of data packets to an application processor;

code for causing the electronic device to buffer, in application processor memory, the at least the portion of the first set of data packets or the at least the portion of the second set of data packets; and

code for causing the electronic device to reorder the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

24. The computer-readable medium of claim 23, wherein the code for causing the electronic device to reorder the at least the portion of the first set of data packets or the at least the portion of the second set of data packets comprises:

code for causing the electronic device to determine, by the modem processor, a first reordering information or a second reordering information based on sequence numbering of the portion of the first set of data packets or of the portion of the second set of data packets; and

code for causing the electronic device to provide, by the modem processor, the first reordering information for the at least the portion of the first set of data packets or the second reordering information for the at least the portion of the second set of data packets to the application processor.

25. The computer-readable medium of claim 24, wherein the first reordering information or the second reordering information comprises one or more completion events, and wherein the code for causing the electronic device to provide the first reordering information or the second reordering information comprises code for causing the electronic device to send, by the modem processor, the first reordering information or the second reordering information in an order for packet consumption by the application processor.

26. The computer-readable medium of claim 23, further comprising code for causing the electronic device to provide, by the modem processor, a first reordering information for the at least the portion of the first set of data packets or a second reordering information for the at least the portion of the second set of data packets to the application processor.

27. An apparatus, comprising:

modem processing means for receiving a first set of data packets via a first radio access technology (RAT), for receiving a second set of data packets via a second radio access technology (RAT), wherein the first set of data packets and the second set of data packets are from a data stream, for providing at least a portion of the first set of data packets or at least a portion of the second set of data packets to an application processing means; and

application processing memory means for buffering the at least the portion of the first set of data packets or the at least the portion of the second set of data packets, wherein the apparatus comprises means for reordering the at least the portion of the first set of data packets or the at least the portion of the second set of data packets.

28. The apparatus of claim 27, wherein the means for reordering the at least the portion of the first set of data packets or the at least the portion of the second set of data packets comprises further modem processing means for determining a first reordering information or a second reordering information based on sequence numbering of the portion of the first set of data packets or of the portion of the second set of data packets, and further modem processing means for providing the first reordering information for the at least the portion of the first set of data packets or the second reordering information for the at least the portion of the second set of data packets to the application processor.

29. The apparatus of claim 28, wherein the first reordering information or the second reordering information comprises one or more completion events, and wherein the modem processing means for providing the first reordering information or the second reordering information comprises modem processing means for sending the first reordering information or the second reordering information in an order for packet consumption by the application processing means.

30. The apparatus of claim 27, further comprising modem processing means for providing a first reordering information for the at least the portion of the first set of data packets or a second reordering information for the at least the portion of the second set of data packets to the application processor.