Trained data transmission for communication systems

• US 9,992,764 B2
• Filed: 06/07/2013
• Issued: 06/05/2018
• Est. Priority Date: 11/20/2003
• 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): Elpenord, Candal
• Assistant Examiner(s): CASTANEYRA, RICARDO H
• Application Number:
  US13/912,802
• Publication Number:
  US 20130336247A1
• Time in Patent Office: 1,824 Days
• Field of Search: 370329, 370252, 370328, 370230, 370235, 370338, 370254, 370255, 370350, 370465
• 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. A training phase may include a first wireless station exchanging medium reservation messages with a second wireless station to reserve a medium and to select a data transmission parameter. The data transmission parameter may include a modulation scheme and a forward error correction (FEC) coding rate. At least one of the medium reservation messages may include a duration field indicating a duration for which the medium is reserved. A first data phase may include sending data from the first wireless station to the second wireless station according to the selected data transmission parameter. A second data phase may then be performed without first repeating the training phase. The second data phase may include transmitting data from the first wireless station to a second wireless station according to the data transmission parameter.

Claims

1. A method, comprising:

performing a training phase, wherein the training phase includes an exchange of medium reservation messages with a first wireless station and a second wireless station, wherein the training phase further includes;

reserving a medium for a duration, wherein at least a first one of the medium reservation messages includes a duration field indicating the duration, and

selecting at least one data transmission parameter for each of a plurality of distinct subcarriers in a multicarrier system, wherein the at least one data transmission parameter includes a modulation scheme and a forward error correction (FEC) coding rate, wherein the modulation scheme is selected based on training information of at least a second one of the medium reservation messages that is sent by the first wireless station;

performing a first data phase including causing to send first data by the first wireless station to the second wireless station according to the at least one data transmission parameter selected during the training phase; and

performing a second data phase without first repeating the training phase, wherein the second data phase includes;

causing to send a protection packet by the first wireless station to the second wireless station, and

causing to send second data by the first wireless station to the second wireless station according to the at least one data transmission parameter selected during the training phase, wherein the protection packet protects the second data phase against collisions from one or more third party wireless stations.

2. The method of claim 1, wherein the training phase comprises the first wireless station receiving an indication from the second wireless station of the at least-one data transmission parameter.

3. The method of claim 1, wherein the at least one data transmission parameter corresponds to a plurality of antennas.

4. The method of claim 3, wherein the plurality of antennas correspond to the second wireless station.

5. The method of claim 1, wherein the first wireless station and the second wireless station are included in an IEEE 802.11 wireless network.

6. The method of claim 5, wherein the second wireless station is an access point (AP).

7. An apparatus of a first wireless station, comprising a processor and a wireless transceiver, the apparatus adapted to:

perform a training phase, wherein the training phase includes an exchange of medium reservation messages with a second wireless station, wherein the training phase further includes;

reservation of a medium for a duration, wherein at least a first one of the medium reservation messages includes a duration field indicating the duration, and

selection of at least one data transmission parameter for each of a plurality of distinct subcarriers in a multicarrier system, wherein the at least one data transmission parameter includes a modulation scheme and a forward error correction (FEC) coding rate, wherein the modulation scheme is selected based on training information of at least a second one of the medium reservation messages that is sent by the first wireless station;

perform a first data phase including causing to send first data to the second wireless station according to the at least one data transmission parameter selected during the training phase; and

perform a second data phase without first repeating the training phase, wherein the second data phase includes;

causing to transmit a protection packet to the second wireless station, and

causing to transmit second data to the second wireless station according to the at least one data transmission parameter selected during the training phase, wherein the protection packet protects the second data phase against collisions from one or more third party wireless stations.

8. The apparatus of claim 7, wherein the training phase comprises the first wireless station receiving from the second wireless station an indication of the at least one data transmission parameter.

9. The apparatus of claim 7, wherein the at least one data transmission parameter corresponds to a plurality of antennas.

10. The apparatus of claim 9, wherein the plurality of antennas correspond to the second wireless station.

11. The apparatus of claim 7, wherein the first wireless station and the second wireless station are included in an IEEE 802.11 wireless network.

12. The apparatus of claim 11, wherein the second wireless station is an access point (AP).

13. A product including one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement a method at a wireless device, the method comprising:

performing a training phase, wherein the training phase includes an exchange of medium reservation messages with a first wireless station and a second wireless station, wherein the training phase further includes;

reserving a medium for a duration, wherein at least a first one of the medium reservation messages includes a duration field indicating the duration, and

selecting at least one data transmission parameter for each of a plurality of distinct subcarriers in a multicarrier system, wherein the at least one data transmission parameter includes a modulation scheme and a forward error correction (FEC) coding rate, wherein the modulation scheme is selected based on training information of at least a second one of the medium reservation messages that is sent by the first wireless station;

performing a first data phase including causing to send first data by the first wireless station to the second wireless station according to the at least one data transmission parameter selected during the training phase; and

performing a second data phase without first repeating the training phase, wherein the second data phase includes;

causing to send a protection packet by the first wireless station to the second wireless station, and

causing to send second data by the first wireless station to the second wireless station according to the at least one data transmission parameter selected during the training phase, wherein the protection packet protects the second data phase against collisions from one or more third party wireless stations.

14. The product of claim 13, wherein the training phase comprises the first wireless station receiving an indication from the second wireless station of the at least one data transmission parameter.

15. The product of claim 13, wherein the at least one data transmission parameter corresponds to a plurality of antennas.

16. The product of claim 15, wherein the plurality of antennas correspond to the second wireless station.

17. The product of claim 13, wherein the first wireless station and the second wireless station are included in an IEEE 802.11 wireless network.

18. The product of claim 17, wherein the second wireless station is an access point (AP).