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US 12,750,266 B2Granted
Optimization of distributed-tone resource unit pilot tone designs in wireless communications
AssigneeMediatek Inc.
InventorsShengquan Hu, Ching-Chia Cheng, Hung-Tao Hsieh, Jianhan Liu, Thomas Edward Pare, Jr.
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Abstract
Techniques pertaining to optimization of distributed-tone resource unit (RU) pilot tone designs in wireless communications are described. An apparatus (e.g., station (STA)) generates a distributed-tone RU (dRU) with a respective position of each of one or more pilot tones shifted with a respective position of each of one or more other pilot tones kept unchanged. The apparatus then performs a wireless communication in a 20 MHz or 40 MHz bandwidth with the dRU.
Claims4
A method, comprising:
- generating, by a processor of an apparatus, a distributed-tone resource unit (dRU) with a respective position of each of one or more pilot tones shifted with a respective position of each of one or more other pilot tones kept unchanged;
- and
- performing, by the processor, a wireless communication in a 20 MHz or 40 MHz bandwidth with the dRU,
- wherein the performing of the wireless communication in the 20 MHz or 40 MHz bandwidth with the dRU comprises performing the wireless communication in the 40 MHz bandwidth with eighteen 26-tone dRUs (dRU26s), eight 52-tone dRUs (dRU52s), or four 106-tone dRUs (dRU106s),
- wherein pilot tone indices of the eighteen dRU26s comprise at least:
- for a first dRU26:
- −224;
- for a second dRU26:
- −125;
- for a third dRU26:
- −202;
- for a fourth dRU26:
- −103;
- for a fifth dRU26:
- −81;
- for a sixth dRU26:
- −114;
- for a seventh dRU26:
- −213;
- for an eighth dRU26:
- −92;
- for a ninth dRU26:
- −191;
- for a tenth dRU26:
- −169;
- for an eleventh dRU26:
- −70;
- for a twelfth dRU26:
- −147;
- for a thirteenth dRU26:
- −48
- for a fourteenth dRU26:
- −180;
- for a fifteenth dRU26:
- −59;
- for a sixteenth dRU26:
- −158;
- for a seventeenth dRU26:
- −37;
- and
- for an eighteenth dRU26:
- −136,
- wherein pilot tone indices of the eight dRU52s comprise at least:
- for a first dRU52:
- −224
- −125;
- for a second dRU52:
- −202
- −103;
- for a third dRU52:
- −213
- −114;
- for a fourth dRU52:
- −191
- −92;
- for a fifth dRU52:
- −169
- −70;
- for a sixth dRU52:
- −147
- −48;
- for a seventh dRU52:
- −158
- −59;
- and
- for an eighth dRU52:
- −136
- −37,
- wherein pilot tone indices of the four dRU106s comprise at least:
- for a first dRU106:
- −224
- −103;
- for a second dRU106:
- −213
- −92;
- for a third dRU106:
- −169
- −48;
- and
- for a fourth dRU106:
- −158
- −37.
- wherein a ratio of a pilot tone spacing to a cyclic shift delay (CSD) periodicity is closer to x.5 when the respective position of each of one or more pilot tones is shifted compared to the ratio when the respective position of each of one or more pilot tones is not shifted, and wherein x is an integer.
80 more elements
An apparatus, comprising:
- a transceiver configured to communicate wirelessly;
- and
- a processor coupled to the transceiver and configured to perform operations comprising:
- generating a distributed-tone resource unit (dRU) with a respective position of each of one or more pilot tones shifted with a respective position of each of one or more other pilot tones kept unchanged;
- and
- performing, via the transceiver, a wireless communication in a 20 MHz or 40 MHz bandwidth with the dRU,
- wherein the performing of the wireless communication in the 20 MHz or 40 MHz bandwidth with the dRU comprises performing the wireless communication in the 40 MHz bandwidth with eighteen 26-tone dRUs (dRU26s), eight 52-tone dRUs (dRU52s), or four 106-tone dRUs (dRU106s),
- wherein pilot tone indices of the eighteen dRU26s comprise at least:
- for a first dRU26:
- −224;
- for a second dRU26:
- −125;
- for a third dRU26:
- −202;
- for a fourth dRU26:
- −103;
- for a fifth dRU26:
- −81;
- for a sixth dRU26:
- −114;
- for a seventh dRU26:
- −213;
- for an eighth dRU26:
- −92;
- for a ninth dRU26:
- −191;
- for a tenth dRU26:
- −169;
- for an eleventh dRU26:
- −70;
- for a twelfth dRU26:
- −147;
- for a thirteenth dRU26:
- −48;
- for a fourteenth dRU26:
- −180;
- for a fifteenth dRU26:
- −59;
- for a sixteenth dRU26:
- −158;
- for a seventeenth dRU26:
- −37;
- and
- for an eighteenth dRU26:
- −136,
- wherein pilot tone indices of the eight dRU52s comprise at least:
- for a first dRU52:
- −224
- −125;
- for a second dRU52:
- −202
- −103;
- for a third dRU52:
- −213
- −114;
- for a fourth dRU52:
- −191
- −92;
- for a fifth dRU52:
- −169
- −70;
- for a sixth dRU52:
- −147
- −48;
- for a seventh dRU52:
- −158
- −59;
- and
- for an eighth dRU52:
- −136
- −37,
- wherein pilot tone indices of the four dRU106s comprise at least:
- for a first dRU106:
- −224
- −103;
- for a second dRU106:
- −213
- −92;
- for a third dRU106:
- −169
- −48;
- and
- for a fourth dRU106:
- −158
- −37.
- wherein a ratio of a pilot tone spacing to a cyclic shift delay (CSD) periodicity is closer to x.5 when the respective position of each of one or more pilot tones is shifted compared to the ratio when the respective position of each of one or more pilot tones is not shifted, and wherein x is an integer.
83 more elements
Dependencies are inferred from the claim text.