Wireless apparatus for high-efficiency (HE) communication with additional subcarriers
First Claim
1. A wireless apparatus configured to operate as a high-efficiency (HE) station, the apparatus comprising:
- an interface; and
processing circuitry, coupled with the interface, and configured to;
decode a legacy long training field (L-LTF) of an HE data unit, the L-LTF comprising a legacy number of reference subcarriers;
decode a legacy signal field (L-SIG) of the HE data unit, the L-SIG comprising a legacy number of data subcarriers, and four reference subcarriers; and
decode a HE-signal field (HE-SIG-A) of the HE data unit, the HE-SIG-A comprising a total number of data subcarriers including four data subcarriers corresponding in frequency to the four reference subcarriers of the L-SIG,wherein the four reference subcarriers of the L-SIG are modulated with a known reference sequence.
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Accused Products
Abstract
Embodiments of an access point and method for high-efficiency WLAN (HEW) communication are generally described herein. In some embodiments, the access point may be configured to operate as a master station and may configure an HEW frame to include a legacy signal field (L-SIG), an HEW signal field (HEW SIG-A) following the L-SIG, and one or more HEW fields following the HEW SIG-A. The L-SIG may be configured for transmission using a legacy number of data subcarriers, a legacy number of pilot subcarriers and a number of additional reference subcarriers modulated with a known reference sequence. At least one symbol of the HEW SIG-A and the one or more HEW fields following the HEW SIG-A of the HEW frame may be configured for transmission using additional data subcarriers. The additional data subcarriers may correspond to the additional reference subcarriers of the L-SIG.
156 Citations
20 Claims
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1. A wireless apparatus configured to operate as a high-efficiency (HE) station, the apparatus comprising:
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an interface; and processing circuitry, coupled with the interface, and configured to; decode a legacy long training field (L-LTF) of an HE data unit, the L-LTF comprising a legacy number of reference subcarriers; decode a legacy signal field (L-SIG) of the HE data unit, the L-SIG comprising a legacy number of data subcarriers, and four reference subcarriers; and decode a HE-signal field (HE-SIG-A) of the HE data unit, the HE-SIG-A comprising a total number of data subcarriers including four data subcarriers corresponding in frequency to the four reference subcarriers of the L-SIG, wherein the four reference subcarriers of the L-SIG are modulated with a known reference sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless apparatus configured to operate as a high-efficiency (HE) station, the apparatus comprising:
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an interface; and processing circuitry, coupled with the interface, and configured to; decode a legacy long training field (L-LTF) of an HE data unit, the L-LTF comprising a legacy number of reference subcarriers; decode a legacy signal field (L-SIG) of the HE data unit, the L-SIG comprising a legacy number of data subcarriers, and four reference subcarriers; and decode a HE-signal field (HE-SIG-A) of the HE data unit, the HE-SIG-A comprising a total number of data subcarriers including four data subcarriers corresponding in frequency to the four reference subcarriers of the L-SIG, wherein the four reference suhcarriers of the L-SIG are modulated with a known reference sequence, and wherein the HE data unit further comprises a repetition of the L-SIG immediately following the L-SIG and prior to the HE-SIG-A.
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13. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a wireless device configured for operation as a high-efficiency (HE) station (HE-STA), the instructions to configure the device to perform operations to:
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decode a legacy long training field (L-LTF) of an HE data unit, the L-LTF comprising a legacy number of reference subcarriers; decode a legacy signal field (L-SIG) of the HE data unit, the L-SIG comprising four reference subcarriers and a legacy number of data subcarriers; and decode a HE-signal field (HE-SIG-A) of the HE data unit, the HE-SIG-A comprising a total number of data subcarriers including four data subcarriers corresponding in frequency to the four reference subcarriers of the L-SIG, wherein the four reference subcarriers of the L-SIG are modulated with a known reference sequence. - View Dependent Claims (14, 15, 16)
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17. A wireless apparatus configured for operation as a high-efficiency (HE) station (HE-STA), the apparatus comprising:
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memory to store a known reference sequence; and processing circuitry to generate a HE data unit for transmission on a 20 MHz channel, the HE data unit comprising a plurality of fields, wherein to generate the HE data unit, the processing circuitry is configured to; encode a legacy long training field (L-LTF) of the HE data unit, the L-LTF comprising a legacy number of reference subcarriers; encode a legacy signal field (L-SIG) of the HE data unit, the L-SIG to follow the L-LIF, the L-SIG comprising four reference subcarriers and a legacy number of data subcarriers, the four reference subcarriers of the L-SIG being modulated with the known reference sequence; encode a HE-signal field (HE-SIG-A) of the HE data unit, the HE-SIG-A comprising a total number of data subcarriers including four data subcarriers corresponding in frequency to the four reference subcarriers of the L-SIG; and configure a subcarrier power allocation of the subcarriers of the L-SIG and the HE-SIG-A so that the L-SIG has a same total power as the L-LTF and that the HE-SIG-A has the same total power as the L-LTF, for transmission of the L-SIG and the HE-SIG-A on the 20 MHz channel. - View Dependent Claims (18, 19, 20)
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Specification