Method and apparatus for wireless LAN (WLAN) data multiplexing

• US 8,582,430 B2
• Filed: 04/30/2008
• Issued: 11/12/2013
• Est. Priority Date: 10/15/2003
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ketchum, John W., Walton, Jay Rodney, Nanda, Sanjiv
• Primary Examiner(s): MEW, KEVIN D
• Application Number:
  US12/112,718
• Publication Number:
  US 20090323646A1
• Time in Patent Office: 2,022 Days
• Field of Search: 370229-230, 370/230.1, 370/231, 370/235, 370/389, 370/392, 370468-474, 370/476, 370465-466
• US Class Current: 370/230
• CPC Class Codes: H04L 1/1635 Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages
• CPC Class Codes: H04L 25/03343 Arrangements at the transmitter end
• CPC Class Codes: H04L 47/2441 relying on flow classification, e.g. using integrated services [IntServ]
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/323 in the physical layer [OSI layer 1]
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 80/02 Data link layer protocols
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. Data associated with at least one MAC ID can be aggregated into a single byte stream. The single byte stream can be formatted into MAC PDUs and then muxed. The muxed MAC PDUs can then be transmitted on a single MAC frame. Muxing of the MAC PDUs can be based on the priority of the MAC PDUs or other criteria. A MAC header can comprise information about the muxed PDUs, such as a pointer, that identifies the location of the MAC PDUs within the MAC frame. A MAC frame can contain partial MAC PDUs. The transmitted muxed MAC PDUs can be retransmitted, and an acknowledgment or feedback scheme may be used to help manage the transmission of the protocol data units.

Claims

1. A method for multiplexing data for a wireless communication system, comprising:

receiving a plurality of flows of data having a media access controller (MAC) ID;

aggregating the plurality of flows of data into a single byte stream;

formatting the single byte stream into MAC protocol data units (PDUs);

prioritizing the MAC PDUs for transmission based on at least one selected from the group consisting of;

quality of service (QoS), control messages, and best effort;

multiplexing the MAC PDUs onto a single MAC frame; and

transmitting the MAC frame.

2. The method of claim 1, wherein the MAC PDUs comprise control data associated with the MAC ID.

3. The method of claim 1, wherein the MAC PDUs each comprises a header that identifies the logic type and the length of the MAC PDU.

4. The method of claim 1, further comprising appending the MAC PDUs with a header that identifies the logic type and the length of the MAC PDU.

5. The method of claim 1, wherein the MAC frame comprises partial MAC PDUs.

6. The method of claim 5, further comprising transmitting a partial MAC PDU at an end of a MAC burst and transmitting the remaining partial MAC PDU at the beginning of a subsequent MAC burst.

7. The method of claim 1, wherein at least one of the MAC PDUs comprises padding bits.

8. The method of claim 1, wherein the multiplexed MAC PDUs comprise PDUs associated with the MAC ID.

9. The method of claim 1, wherein the multiplexed MAC PDUs comprise control message PDUs.

10. The method of claim 1, wherein a MAC burst comprises a MAC header, the MAC header comprises a pointer, and the pointer identifies the location of the MAC PDUs within the MAC frame.

11. The method of claim 1, wherein the multiplexing is based on the priority of the MAC PDUs.

12. The method of claim 1, further comprising:

indicating in a MAC burst that no multiplexed MAC PDUs will be transmitted in a subsequent MAC burst.

13. The method of claim 1, further including transmitting the MAC frame to a user terminal from an access point.

14. The method of claim 1, further including transmitting the MAC frame to an access point from a user terminal.

15. The method of claim 1, further comprising:

retransmitting at least one of the MAC PDUs; and

providing feedback.

16. An apparatus for multiplexing data for a wireless communication system, comprising:

means for receiving a plurality of flows of data having a media access controller (MAC) ID;

means for aggregating the plurality of flows of data into a single byte stream;

means for formatting the single byte stream into MAC protocol data units (PDUs);

means for prioritizing the MAC PDUs for transmission based on at least one selected from the group consisting of;

quality of service (QoS), control messages, and best effort;

means for multiplexing the MAC PDUs onto a single MAC frame; and

means for transmitting the MAC frame.

17. The apparatus of claim 16, wherein the MAC PDUs comprise control data associated with the MAC ID.

18. The apparatus of claim 16, further comprising means for appending the MAC PDUs with a header that identifies the logic type and the length of the MAC PDU.

19. The apparatus of claim 16, wherein the MAC frame comprises partial MAC PDUs.

20. The apparatus of claim 19, wherein the means for transmitting further comprises:

means for transmitting a partial MAC PDU at the end of a first MAC burst and transmitting the remaining partial MAC PDU at the beginning of a second, subsequent MAC burst.

21. The apparatus of claim 16, further comprising:

means for identifying the location of the MAC PDUs within the MAC frame.

22. The apparatus of claim 16, further comprising:

means for indicating in a MAC burst that no multiplexed MAC PDUs will be transmitted in a subsequent MAC burst.

23. The apparatus of claim 16, further comprising:

means for retransmitting at least one of the MAC PDUs; and

means for providing feedback.

24. A non-transitory computer-readable medium, comprising:

code for causing a computer to;

receive a plurality of flows of data having a media access controller (MAC) ID;

aggregate the plurality of flows of data into a single byte stream;

format the single byte stream into MAC protocol data units (PDUs);

prioritize the MAC PDUs for transmission based on at least one selected from the group consisting of;

quality of service (QoS), control messages, and best effort multiplex the MAC PDUs onto a single MAC frame; and

transmit the MAC frame.

25. The computer-readable medium of claim 24, further comprising code for causing the computer to append the MAC PDUs with a header that identifies the logic type and the length of the MAC PDU.

26. The computer-readable medium of claim 24, further comprising code for causing the computer to transmit a partial MAC PDU at the end of a MAC burst and the remaining partial MAC PDU at the beginning of a subsequent MAC burst.

27. The computer-readable medium of claim 24, further comprising code for causing the computer to identify the location of the MAC PDUs within the MAC frame.

28. The computer-readable medium of claim 24, further comprising code for causing the computer to retransmit at least one of the MAC PDUs and provide feedback.

30. The computer-readable medium of claim 24, wherein the computer readable medium is integrated with an access point.

31. The computer-readable medium of claim 24, wherein the computer readable medium is integrated with a user terminal.

29. An apparatus for multiplexing data for a wireless communication system, comprising:

a media access controller (MAC) processor configured to receive a plurality of flows of data having a MAC ID, to aggregate the plurality of flows of data into a single byte stream, to format the single byte stream into MAC protocol data units (PDUs), to prioritize the MAC PDUs for transmission based on at least one selected from the group consisting of;

quality of service (QoS), control messages, and best effort, to multiplex the one or more MAC PDUs onto a single MAC frame, and to transmit the MAC frame; and

a memory associated with the MAC processor.

32. The apparatus of claim 29, wherein the apparatus is integrated with an access point.

33. The apparatus of claim 29, wherein the apparatus is integrated with a user terminal.