Systems and methods for improved protection modes in high-efficiency wireless networks

• US 10,187,813 B2
• Filed: 06/23/2015
• Issued: 01/22/2019
• Est. Priority Date: 06/25/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Tian, Bin, Merlin, Simone, Barriac, Gwendolyn Denise
• Primary Examiner(s): Jiang, Charles C
• Assistant Examiner(s): Khawar, Saad
• Application Number:
  US14/748,051
• Publication Number:
  US 20150382216A1
• Time in Patent Office: 1,309 Days
• Field of Search: None
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

Methods and apparatus for adjusting transmission power in wireless networks are provided. One aspect of the disclosure provides an apparatus for wireless communication. The apparatus includes a processing system configured to receive a message instructing each of multiple devices to transmit a packet at least partially concurrently with each transmission of the other multiple devices. The processing system is further configured to generate the packet. The packet includes an indicator having a value greater than a time associated with a transmission of the packet. An interface is configured to provide the packet for transmission.

Claims

1. An apparatus for wireless communication, comprising:

a processing system configured to;

receive a message instructing each of multiple devices to transmit a packet at least partially concurrently with each transmission of the other multiple devices, the message comprising an indication of a time period associated with transmission of an acknowledgment regarding reception of the packet, the acknowledgment being a block acknowledgment; and

generate the packet comprising an indicator having a value greater than a time associated with a transmission of the packet, the value being based on the indication of the time period; and

an interface configured to provide the packet for transmission during the time associated with the transmission of the packet,

wherein the message instructing each of the multiple devices to transmit the packet comprises a packet transmission time instruction, and wherein a duration indicated by the packet transmission time instruction is greater than the time associated with the transmission of the packet by at least the time period associated with transmission of the block acknowledgment and a time period associated with an extended interframe space (EIFS).

2. The apparatus of claim 1, wherein the time associated with the transmission of the packet comprises a time duration of the packet.

3. The apparatus of claim 1, wherein the processing system is configured to receive the acknowledgment regarding reception of the packet during a time duration indicated by the value of the indicator, the value being greater than the time associated with the transmission of the packet by at least a transmission time of the acknowledgment.

4. The apparatus of claim 1, wherein the message instructing each of the multiple devices to transmit the packet comprises a clear-to-send frame comprising an identifier of the apparatus.

5. The apparatus of claim 1, wherein the interface is configured to provide the packet for transmission during the duration indicated by the packet transmission time instruction.

6. The apparatus of claim 1, wherein the packet comprises a multiple-in-multiple-out frame or an orthogonal frequency division multiple access frame.

7. The apparatus of claim 1, wherein the packet comprises a single-user portion comprising the indicator, wherein the single-user portion is compatible with an 802.11a or 802.11b preamble format.

8. The apparatus of claim 1, wherein the packet comprises a multi-user portion without an indication of packet transmission time.

9. The apparatus of claim 1, wherein the packet comprises a portion identical to a packet transmitted by one of the multiple devices, the portion comprising the indicator.

10. A method of wireless communication, comprising:

receiving, at a wireless device, a message instructing each of multiple devices to transmit a packet at least partially concurrently with each transmission of the other multiple devices, the message comprising an indication of a time period associated with transmission of an acknowledgment regarding reception of the packet, the acknowledgment being a block acknowledgment;

generating the packet comprising an indicator having a value greater than a time associated with a transmission of the packet, the value being based on the indication of the time period; and

providing the packet for transmission during the time associated with the transmission of the packet,

wherein the message instructing each of the multiple devices to transmit the packet comprises a packet transmission time instruction, and wherein a duration indicated by the packet transmission time instruction is greater than the time associated with the transmission of the packet by at least the time period associated with transmission of the block acknowledgment and a time period associated with an extended interframe space (EIFS).

11. The method of claim 10, wherein the time associated with the transmission of the packet comprises a time duration of the packet.

12. The method of claim 10, further comprising receiving the acknowledgment regarding reception of the packet during a time duration indicated by the value of the indicator, the value being greater than the time associated with the transmission of the packet by at least a transmission time of the acknowledgment.

13. The method of claim 10, wherein the message instructing each of the multiple devices to transmit the packet comprises a clear-to-send frame comprising an identifier of the wireless device.

14. The method of claim 10, further comprising providing the packet for transmission during the duration indicated by the packet transmission time instruction.

15. The method of claim 10, wherein the packet comprises a multiple-in-multiple-out frame or an orthogonal frequency division multiple access frame.

16. The method of claim 10, wherein the packet comprises a single-user portion comprising the indicator, wherein the single-user portion is compatible with an 802.11a or 802.11b preamble format.

17. The method of claim 10, wherein the packet comprises a multi-user portion without an indication of packet transmission time.

18. The method of claim 10, wherein the packet comprises a portion identical to a packet transmitted by one of the multiple devices, the portion comprising the indicator.

19. A wireless node for wireless communication, comprising:

an antenna;

a processing system configured to;

receive a message instructing each of multiple devices to transmit a packet at least partially concurrently with each transmission of the other multiple devices, the message comprising an indication of a time period associated with transmission of an acknowledgment regarding reception of the packet, the acknowledgment being a block acknowledgment; and

generate the packet comprising an indicator having a value greater than a time associated with a transmission of the packet, the value being based on the indication of the time period; and

an interface configured to provide the packet for transmission via the antenna during the time associated with the transmission of the packet,

wherein the message instructing each of the multiple devices to transmit the packet comprises a packet transmission time instruction, and wherein a duration indicated by the packet transmission time instruction is greater than the time associated with the transmission of the packet by at least the time period associated with transmission of the block acknowledgment and a time period associated with an extended interframe space (EIFS).

20. An apparatus for wireless communication, comprising:

means for receiving, at the apparatus, a message instructing each of multiple devices to transmit a packet at least partially concurrently with each transmission of the other multiple devices, the message comprising an indication of a time period associated with transmission of an acknowledgment regarding reception of the packet, the acknowledgment being a block acknowledgment;

means for generating the packet comprising an indicator having a value greater than a time associated with a transmission of the packet, the value being based on the indication of the time period; and

means for providing the packet for transmission during the time associated with the transmission of the packet,

wherein the message instructing each of the multiple devices to transmit the packet comprises a packet transmission time instruction, and wherein a duration indicated by the packet transmission time instruction is greater than the time associated with the transmission of the packet by at least the time period associated with transmission of the block acknowledgment and a time period associated with an extended interframe space (EIFS).

21. The apparatus of claim 20, wherein the time associated with the transmission of the packet comprises a time duration of the packet.

22. The apparatus of claim 20, further comprising means for receiving the acknowledgment regarding reception of the packet during a time duration indicated by the value of the indicator, the value being greater than the time associated with the transmission of the packet by at least a transmission time of the acknowledgment.

23. The apparatus of claim 20, wherein the message instructing each of the multiple devices to transmit the packet comprises a clear-to-send frame comprising an identifier of the apparatus.

24. The apparatus of claim 20, the apparatus further comprising means for providing the packet for transmission during the duration indicated by the packet transmission time instruction.