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Apparatus, computer readable medium, and method for alignment of long training fields in a high efficiency wireless local-area network

  • US 9,912,462 B2
  • Filed: 08/25/2015
  • Issued: 03/06/2018
  • Est. Priority Date: 04/28/2015
  • Status: Active Grant
First Claim
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1. An apparatus of a high-efficiency (HE) wireless device, the apparatus comprising memory:

  • and, circuitry configured to;

    determine if a HE long training field (HE-LTF) portion of a HE physical layer convergence procedure (PLCP) protocol data unit (HE-PPDU) is to be extended;

    if the HE-LTF portion is to be extended, configure the HE-LTF portion to use a longer symbol duration than a symbol duration of one or more other HE-LTF portions of one or more other HE-PPDUs that are to be concurrently transmitted, wherein the HE-LTF portion is to start at a same start time and end at a same end time as the one or more other HE-LTF portions, wherein the longer symbol duration is 6.4 μ

    s or 12.8 μ

    s; and

    simultaneously transmit the HE-PPDU and the one or more other HE-PPDUs in accordance with orthogonal frequency division multiple access (OFDMA).

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