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- Nachgewiesen in: USPTO Patent Grants
- Sprachen: English
- Patent Number: 11949,471
- Publication Date: April 02, 2024
- Appl. No: 17/568367
- Application Filed: January 04, 2022
- Assignees: InterDigital Patent Holdings, Inc. (Wilmington, DE, US)
- Claim: 1. A station comprising: a processor configured to determine a number of symbols utilized for a long training field (LTF) based on a number of space-time streams associated with a wireless local area network (WLAN) communication, wherein the number of symbols utilized for the LTF comprises 1, 2, 4, 6, or 8 symbols, wherein, on a condition that the number of space-time streams is equal to 3, 5, or 7, the processor is configured to determine the number of symbols is a next higher number than the number of space-time streams; and a transmitter configured to transmit, in an uplink multiple input multiple output (UL MIMO) transmission, the determined number of symbols utilized for the LTF using a set of subcarriers associated with a subchannel including subcarrier indices, wherein the subcarrier indices are associated with the number of space-time streams.
- Claim: 2. The station of claim 1 , wherein the number of space-time streams is a total number of space-time streams for multi-user multiple input multiple-output (MU MIMO) communication.
- Claim: 3. The station of claim 1 , the processor further configured to determine a group identifier and identify a position of a device in a group associated with the group identifier.
- Claim: 4. The station of claim 1 , wherein, on a condition that the number of space-time streams is equal to 1, 2, 4, 6, or 8, the processor determines that the number of symbols is equal to the number of space-time streams.
- Claim: 5. The station of claim 1 , wherein the LTF is associated with a physical protocol data unit (PPDU).
- Claim: 6. The station of claim 1 , wherein the set of subcarriers comprises at least one of a 20 megahertz (MHz) channel, a 40 MHz channel, or an 80 MHz channel.
- Claim: 7. The station of claim 1 , wherein the station is a non-access point station.
- Claim: 8. The station of claim 1 , wherein the LTF is a high efficiency LTF.
- Claim: 9. A method comprising: determining, by a station, a number of symbols utilized for a long training field (LTF) based on a number of space-time streams associated with a wireless local area network (WLAN) communication, wherein the number of symbols utilized for the LTF comprises 1, 2, 4, 6, or 8 symbols, wherein, on condition that the number of space-time streams is equal to 3, 5, or 7, the number of symbols is a next higher number than the number of space-time streams; and transmitting, by the station, in an uplink multiple input multiple output (UL transmission, the determined number of symbols utilized for the HE LTF using a set of subcarriers associated with a subchannel including subcarrier indices, wherein the subcarrier indices are associated with the number of space-time streams.
- Claim: 10. The method of claim 9 , wherein the number of space-time streams is a total number of space-time streams for multi-user multiple-input multiple-output (MU MIMO) communication.
- Claim: 11. The method of claim 9 , further comprising determining a group identifier and identifying a position of a device in a group associated with the group identifier.
- Claim: 12. The method of claim 9 , further comprising, on a condition that the number of space-time streams is equal to 1, 2, 4, 6, or 8, determining that the number of symbols is equal to the number of space-time streams.
- Claim: 13. The method of claim 9 , wherein the LTF is associated with a physical protocol data unit (PPDU).
- Claim: 14. The method of claim 9 , wherein the set of subcarriers comprises at least one of a 20 megahertz (MHz) channel, a 40 MHz channel, or an 80 MHz channel.
- Claim: 15. The method of claim 9 , wherein the LTF is a high efficiency LTF.
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- Primary Examiner: Rivas, Salvador E
- Attorney, Agent or Firm: Flaster Greenberg P.C.
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