Trained data transmission for communication systems

• US 8,478,201 B2
• Filed: 09/30/2010
• Issued: 07/02/2013
• Est. Priority Date: 08/08/2003
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Stephens, Adrian P., Jacobsen, Eric A., Kitchin, Duncan M., Sandhu, Sumeet
• Primary Examiner(s): PHU, SANH D
• Application Number:
  US12/894,495
• Publication Number:
  US 20110013524A1
• Time in Patent Office: 1,006 Days
• Field of Search: 455/67.11, 455/517, 455/452.1, 455/423, 370/328, 370/329
• US Class Current: 455/67.11
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/54 based on quality criteria
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02

Abstract

Various embodiments are described for a trained data transmission for communication systems.

Claims

1. A method, comprising:

performing a training phase, wherein the training phase comprises;

transmitting, from a first station to a second station, a medium reservation request message comprising training information,

receiving, by the first station from the second station, a medium reservation reply message comprising training feedback, wherein the training feedback comprises an indication of at least one transmission parameter determined based at least in part on one or more measured transmission conditions, and wherein the one or more transmission conditions are measured based at least in part on the training information; and

performing a data phase, wherein the data phase comprises;

transmitting data, from the first station to the second station, in accordance with the at least one transmission parameter indicated in the training feedback,

wherein the one or more measured transmission conditions comprise a respective at least one measured transmission condition corresponding to each of a plurality of antennas associated with the second station.

2. The method of claim 1, wherein the medium reservation request message comprises a duration field indicating a period of time for which reservation of a transmission medium is requested or the medium reservation reply message comprises a duration field indicating a period of time for which the transmission medium is reserved.

3. The method of claim 1, wherein the data phase corresponds to a first data phase, the method further comprising:

performing a second data phase without first repeating the training phase, the second data phase comprising transmitting data from the first station to the second station in accordance with the at least one transmission parameter.

4. The method of claim 3, further comprising:

transmitting, from the first station to the second station, at least one protection data packet prior to performing the second data phase, the at least one protection data packet indicating reservation of the transmission medium for a period of time.

5. The method of claim 1, further comprising:

performing a third data phase comprising transmitting at least one message from a third station to the second station without first performing a training phase between the third station and the second station.

6. The method of claim 5, wherein the at least one message transmitted from the third station to the second station comprises a legacy portion and a training portion, and wherein the training portion comprises at least one of:

training information or training feedback.

18. The method of claim 1, wherein the training information comprises a predetermined training sequence.

19. The method of claim 1, wherein the medium reservation request message comprises a request to reserve a transmission medium, and wherein the one or more measured transmission conditions comprise a respective at least one measured transmission condition associated with each of a plurality of sub-carriers associated with the transmission medium.

7. An apparatus comprising at least one processor and at least one wireless transceiver, the apparatus adapted to:

perform a training phase between a first station and a second station, the training phase comprising;

transmitting, from the first station to the second station, a medium reservation request message comprising training information,

receiving, by the first station from the second station, a medium reservation reply message comprising training feedback, wherein the training feedback comprises an indication of at least one transmission parameter determined based at least in part on one or more measured transmission conditions, and wherein the one or more transmission conditions are measured based at least in part on the training information; and

perform a data phase, the data comprising;

transmitting data, from the first station to the second station, in accordance with the at least one transmission parameter indicated in the training feedback,

wherein the one or more measured transmission conditions comprise a respective at least one measured transmission condition corresponding to each of a plurality of antennas associated with the second station.

8. The apparatus of claim 7, wherein the medium reservation request message comprises a duration field indicating a period of time for which reservation of a transmission medium is requested or the medium reservation reply message comprises a duration field indicating a period of time for which the transmission medium is reserved.

9. The apparatus of claim 7, wherein the at least one parameter comprises at least one of:

transmission power, a code rate, a determination as to whether to use interleaving, a type of interleaving, a modulation scheme, or a data rate.

10. The apparatus of claim 7, wherein the data phase corresponds to a first data phase, and wherein the apparatus is further adapted to:

perform a second data phase without first repeating the training phase, the second data phase comprising transmitting data from the first station to the second station in accordance with the at least one transmission parameter.

11. The apparatus of claim 7, wherein the apparatus is further adapted to:

perform a third data phase comprising transmitting at least one message from a third station to the second station without first performing a training phase between the third station and the second station.

12. The apparatus of claim 11, wherein the at least one message transmitted from the third station to the second station comprises a legacy portion and a training portion, and wherein the training portion comprises at least one of:

training information or training feedback.

14. The apparatus of claim 10, wherein the apparatus is further adapted to:

transmit, from the first station to the second station, at least one protection data packet prior to performing the second data phase, the at least one protection data packet indicating reservation of the transmission medium for a period of time.

13. One or more non-transitory computer-readable media storing computer-executable instructions that, responsive to execution by a processing device, cause a method to be performed, the method comprising:

performing a training phase, wherein the training phase comprises;

transmitting, from the first station to the second station, a medium reservation request message comprising training information,

receiving, by the first station from the second station, a medium reservation reply message comprising training feedback, wherein the training feedback comprises an indication of at least one transmission parameter determined based at least in part on one or more measured transmission conditions, and wherein the one or more transmission conditions are measured based at least in part on the training information; and

performing a data phase, the data phase comprising;

transmitting data, from the first station to the second station, in accordance with the at least one transmission parameter indicated in the training feedback,

wherein the one or more measured transmission conditions comprise a respective at least one measured transmission condition corresponding to each of a plurality of antennas associated with the second station.

15. The one or more computer-readable media of claim 13, wherein the medium reservation request message comprises a duration field indicating a period of time for which reservation of a transmission medium is requested or the medium reservation reply message comprises a duration field indicating a period of time for which the transmission medium is reserved.

16. The one or more computer-readable media of claim 13, the method further comprising:

performing a third data phase comprising transmitting at least one message from a third station to the second station without first performing a training phase between the third station and the second station.

17. The one or more computer-readable media of claim 16, wherein the at least one message transmitted from the third station to the second station comprises a legacy portion and a training portion, and wherein the training portion comprises at least one of:

training information or training feedback.

20. One or more non-transitory computer-readable media storing computer-executable instructions that, responsive to execution by a processing device, cause a method to be performed, the method comprising:

performing a training phase between a first station and a second station, wherein the training phase comprises;

transmitting, from the first station to the second station, a medium reservation request message comprising training information,

receiving, at the first station from the second station, a medium reservation reply message comprising training feedback, wherein the training feedback comprises an indication of at least one transmission parameter determined based at least in part on one or more measured transmission conditions, and wherein the one or more transmission conditions are measured based at least in part on the training information;

performing a data phase comprising transmitting data from the first station to the second station in accordance with the at least one transmission parameter indicated in the training information;

transmitting, from the first station to the second station, at least one protection data packet prior to performing a second data phase, the at least one protection data packet indicating reservation of the transmission medium for a period of time; and

performing the second data phase without first repeating the training phase, the second data phase comprising transmitting data from the first station to the second station in accordance with the at least one transmission parameter.