Indicating support for communication using mid-ambles

• US 10,608,720 B2
• Filed: 11/17/2017
• Issued: 03/31/2020
• Est. Priority Date: 11/20/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Verma, Lochan, Vermani, Sameer, Tian, Bin
• Primary Examiner(s): Levitan, Dmitry
• Application Number:
  US15/816,468
• Publication Number:
  US 20180145733A1
• Time in Patent Office: 865 Days
• Field of Search: 370310, 370341, 370348, 370436, 370437, 370465
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 27/261 Details of reference signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 40/244 using a network of reference devices, e.g. beaconing
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Various aspects of the disclosure relate to communication using a data unit that includes at least one mid-amble. In some aspects, an apparatus may use mid-ambles for mobility scenarios (e.g., when the apparatus is moving outdoors). The disclosure relates in some aspects to signaling associated with the use of mid-ambles. In some aspects, an apparatus may signal whether it supports sending and/or receiving data with mid-ambles. In some aspects, an apparatus may signal whether a particular data unit includes at least one mid-amble. In some aspects, an apparatus may signal an indication of at least one mid-amble update interval. In some aspects, an apparatus may signal whether a mid-amble includes a short training field.

Claims

1. An apparatus for wireless communication, comprising:

a processing system configured to generate an indication, wherein the indication indicates that the apparatus supports obtaining data units that include at least one mid-amble;

a first interface configured to output the indication for transmission to another apparatus; and

a second interface configured to obtain a data unit from the other apparatus after the indication is output for transmission,

wherein the processing system is further configured to process a mid-amble of the obtained data unit based on the generation of the indication.

2. The apparatus of claim 1, wherein:

the generation of the indication comprises generation of at least one of;

an information element, a management frame, a beacon, a probe request, a probe response, an association request, an association response, or any combination thereof including the indication therein; and

the indication is output for transmission via at least one of;

the information element, the management frame, the beacon, the probe request, the probe response, the association request, the association response, or any combination thereof.

3. The apparatus of claim 1, wherein the generation of the indication comprises:

determine that the apparatus is moving; and

specify a value for the indication according to the determination that the apparatus is moving.

4. The apparatus of claim 1, wherein:

the processing system is further configured to generate a second indication of whether each mid-amble includes a short training field; and

the interface is further configured to output the second indication for transmission.

5. The apparatus of claim 1, wherein each mid-amble comprises channel estimation information, gain setting information, or any combination thereof.

6. The apparatus of claim 1, wherein the indication applies to all data units to be obtained by the apparatus.

7. The apparatus of claim 6, wherein each data unit comprises a Physical Layer Convergence Protocol (PLCP) Protocol Data Unit.

8. A wireless node, comprising:

a processing system configured to generate an indication, wherein the indication indicates that the wireless node supports obtaining data units that include at least one mid-amble;

a transmitter configured to transmit the indication to another apparatus; and

a receiver configured to receive a data unit from the other apparatus after the indication is transmitted,

wherein the processing system is further configured to process a mid-amble of the received data unit based on the generation of the indication.

9. An apparatus for wireless communication, comprising:

a first interface configured to obtain an indication from another apparatus, wherein the indication indicates that the other apparatus supports obtaining data units that include at least one mid-amble;

a processing system configured to generate a data unit comprising at least one mid-amble as a result of the indication indicating that the other apparatus supports obtaining data units that include at least one mid-amble; and

a second interface configured to output the generated data unit for transmission to the other apparatus.

10. The apparatus of claim 9, wherein the indication is obtained via at least one of:

an information element, a management frame, a beacon, a probe request, a probe response, an association request, an association response, or any combination thereof.

11. The apparatus of claim 9, wherein:

the interface is further configured to obtain a second indication of whether each mid-amble includes a short training field; and

the processing system is further configured to adjust an automatic gain control estimation based on a short training field for each mid-amble if the second indication indicates that each mid-amble includes a short training field.

12. The apparatus of claim 9, wherein each mid-amble comprises channel estimation information, gain setting information, or any combination thereof.

13. The apparatus of claim 9, wherein the indication applies to all data units output to the other apparatus.

14. A wireless node, comprising:

a receiver configured to receive an indication from another wireless node, wherein the indication indicates that the other wireless node supports obtaining data units that include at least one mid-amble;

a processing system configured to generate a data unit comprising at least one mid-amble as a result of the indication indicating that the other wireless node supports obtaining data units that include at least one mid-amble; and

a transmitter configured to transmit the generated data unit to the other apparatus.