A method and device for optimizing distributed resource unit tone scheme

Abstract

The present invention provides various schemes related to optimizing a distributed resource unit (RU) tone scheme to reduce a peak-to-average power ratio (PAPR) in a 6GHz low power indoor (LPI) system. A device allocates multiple subcarriers of an RU over a bandwidth to generate a distributed tone RU (dRU) or a distributed tone multi-RU (dMRU). The device then uses the dRU or the dMRU to communicate with a communication entity. In the process of allocating multiple subcarriers of an RU to generate a dRU or a dMRU, the device allocates multiple subcarriers of the RU over a predetermined span over each 20MHz frequency segment or frequency subblock in the bandwidth, and, in the distribution pattern of the multiple subcarriers, the predetermined span has an interval of at least a minimum size around a center direct current (DC) tone so that the PAPR is reduced in communication with the communication entity.

Description

Technical Field

[0001] The present invention relates to wireless communications, and more particularly, to optimization of distributed resource unit tone plans to reduce peak-to-average power ratio (PAPR). Background Art

[0002] Unless otherwise indicated herein, the approaches described in this section are not prior art to the listed claims and are not admitted to be prior art by inclusion in this section.

[0003] For low-power indoor (LPI) applications in 6GHz, there are strict power spectral density (PSD) requirements, which often result in low transmission power and short coverage. One way to improve coverage is to allocate tones of regular resource units (RUs) (interchangeably referred to herein as "rRUs", "regular RUs" and "logical RUs") over a wider bandwidth or larger frequency subblocks, resulting in staggered, interleaved or other distributed-tone RUs (dRUs) to achieve higher transmission power for 6GHz low-power indoor (LPI) systems. Unlike regular RUs where the subcarriers are essentially continuous or adjacent to each other, the subcarriers in the dRU are distributed / dispersed over a wider bandwidth, so the tones are separated by different distances. Due to the separation or discontinuity of the tones, in general, distributed tone RU transmissions tend to result in higher PAPR than regular RUs. Therefore, a solution for optimizing the distributed RU tone scheme is needed to reduce PAPR in 6GHz LPI systems. Summary of the invention

[0004] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce the concepts, highlights, benefits, and advantages of the novel and non-obvious technology described herein. Selected implementations are further described below in the detailed description. Therefore, the following summary is not intended to determine the essential characteristics of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

[0005] One of the objects of the present invention is to provide schemes, concepts, designs, techniques, methods and apparatuses related to optimization of distributed RU tone schemes to reduce PAPR in 6GHz LPI systems. The schemes proposed in the present invention can solve or otherwise alleviate the above-mentioned problems. For example, for dRUs of different sizes on each of 20MHz, 40MHz and 80MHz bandwidths, implementation of various proposed schemes for optimized dRU tone schemes according to the present application can reduce PAPR and achieve optimal power boost gain.

[0006] In a first aspect, the present invention provides a method for optimizing a distributed resource unit tone scheme, comprising: allocating multiple subcarriers of a resource unit RU on a bandwidth to generate a distributed tone RU dRU or a distributed tone multi-RU dMRU; and communicating with a communication entity using the dRU or the dMRU; wherein the step of allocating multiple subcarriers of the RU to generate the dRU or the dMRU comprises: allocating the multiple subcarriers of the RU on a predetermined span on each 20MHz frequency segment or frequency subblock in the bandwidth, wherein the predetermined span has an interval around a center direct current (DC) tone to reduce a peak-to-average power ratio (PAPR) in communication with the communication entity.

[0007] In some embodiments, for each 20 MHz frequency segment or frequency sub-block, the predetermined span includes a span across 241 tones and the tone distribution range is [-120:-2, 2:120], wherein the interval includes at least three DC tones surrounding the central DC tone.

[0008] In some embodiments, for each 20 MHz frequency segment or frequency sub-block, the predetermined span comprises a span across 243 tones and the tone distribution range is [-121:-3,3:121], wherein the interval comprises at least five DC tones surrounding the central DC tone.

[0009] In some embodiments, the interval is dRU pitch spacing D td And, for each 20MHz frequency segment or frequency sub-block in the bandwidth, the interval is expressed as n*D td , where n=1, 2, 3 or 4.

[0010] In some embodiments, the plurality of subcarriers of the RU are allocated over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indexes of the 26-tone dRU over a 20 MHz bandwidth include: [-120:9:-12, 6:9:114] for 26-tone dRU1, [-116:9:-8, 10:9:118] for 26-tone dRU2, [-118:9:-10,8:9:116] for 26-tone dRU3, [-114:9:-6,12:9:120] for 26-tone dRU4, [-112:9:-4,5:9:113] for 26-tone dRU5, [-119:9:-11,7:9:115] for 26-tone dRU6, [-115:9:-7,11:9:119] for 26-tone dRU7 , [-117:9:-9,9:9:117] for 26-tone dRU8, and [-113:9:-5,4:9:112] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1, dRU2] for 52-tone dRU1, 26-tone [dRU3, dRU4] for 52-tone dRU2, 26-tone [dRU6, dRU7] are used for 52-tone dRU3, and 26-tone [dRU8, dRU9] are used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20MHz bandwidth include: 26-tone [dRU1~dRU4], [-3, 3] for 106-tone dRU1, and 26-tone [dRU6~dRU9], [-2, 2] for 106-tone dRU2.

[0011] In some embodiments, the plurality of subcarriers of the RU are allocated over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indices of the 26-tone dRU over the 20 MHz bandwidth include: [-121:9:-13,5:9:113] for 26-tone dRU1, [-117:9:-9,9:9:117] for 26-tone dRU2, [-119:9:-11,7:9:115] for 26-tone dRU3, [-115:9:-7,11:9:119] for 26-tone dRU4, [-113:9:-5,13:9:121] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-116:9:-8,10:9:118] for 26-tone dRU7, [-118:9:-10,8:9:116] for 26-tone dRU8, and [-114:9:-6,12:9:120] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1, dRU2] for 52-tone dRU1, 26-tone [dRU3, dRU4] for 52-tone dRU2, 26-tone [dRU6, dRU7] are used for 52-tone dRU3, and 26-tone [dRU8, dRU9] are used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20MHz bandwidth include: 26-tone [dRU1~dRU4], [-4, 3] are used for 106-tone dRU1, and 26-tone [dRU6~dRU9], [-3, 4] are used for 106-tone dRU2.

[0012] In some embodiments, the plurality of subcarriers of the RU are allocated over a 40 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, a 106-tone dRU, or a 242-tone dRU, wherein the data and pilot subcarrier indices of the 26-tone dRU over the 40 MHz bandwidth include: [-242:18:-26,10:18:226] for 26-tone dRU1, [-233:18:-17,19:18:235] for 26-tone dRU2, [-2 38:18:-22,14:18:230] for 26-tone dRU4, [-229:18:-13,23:18:239] for 26-tone dRU5, [-225:18:-9,27:18:243] for 26-tone dRU6, [-240:18:-24,12:18:228] for 26-tone dRU7, [-231:18:-15,21:18:237] for 26-tone dRU8, [-236:18:-20,16 :18:232] for 26-tone dRU9, [-227:18:-11,25:18:241] for 26-tone dRU10, [-241:18:-25,11:18:227] for 26-tone dRU11, [-232:18:-16,20:18:236] for 26-tone dRU12, [-237:18:-21,15:18:231] for 26-tone dRU13, [-228:18:-12,24:18:24 0], [-234:18:-18,18:18:234] for 26-tone dRU14, [-239:18:-23,13:18:229] for 26-tone dRU15, [-230:18:-14,22:18:238] for 26-tone dRU16, [-235:18:-19,17:18:233] for 26-tone dRU17, and [-226:18:-10,26:18:242] for 26-tone dRU18;The data and pilot subcarrier indices of the 52-tone dRU on the 40 MHz include: [-242:9:-17,10:9:235] for 52-tone dRU1, [-238:9:-13,14:9:239] for 52-tone dRU2, [-240:9:-15,12:9:237] for 52-tone dRU3, [-236:9:-11,12:9:238] for 52-tone dRU4. 16:9:241] for 52-tone dRU5, [-241:9:-16,11:9:236] for 52-tone dRU6, [-237:9:-12,15:9:240] for 52-tone dRU7, [-239:9:-14,13:9:238], and [-235:9:-10,17:9:242] for 52-tone dRU8; wherein, in the 40 MHz The data and pilot subcarrier indices of the 106-tone dRU on the bandwidth include: 26 tones [dRU1-dRU4], [-8,5] for 106-tone dRU1, 26 tones [dRU6-dRU9], [-6,7] for 106-tone dRU2, 26 tones [dRU10-dRU13], [-7,6] for 106-tone dRU3, and 26 tones [dRU15-dRU18], [-5, 8] for 106-tone dRU4; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 40 MHz include: 106-tone [dRU1-dRU2], 26-tone dRU5 and [-244,-4,3,9] for 242-tone dRU1, and 106-tone [dRU3-dRU4], 26-tone dRU14 and [-243,-3,4,244] for 242-tone dRU2. ;

[0013] In some embodiments, the plurality of subcarriers of the RU are allocated over an 80 MHz bandwidth to generate a 52-tone dRU, a 106-tone dRU, a 242-tone dRU, or a 484-tone dRU, wherein data and pilot subcarrier indices of the 52-tone dRU over the 80 MHz bandwidth include: [-483:36:-51,17:36:449], [-467:36:-35,33:36:465] for 52-tone dRU1, [-475:36:-43,25:36:457], [-459:36:-27,41:36:473] for 52-tone dRU2, [-479:36:-47,2 1:36:453],[-463:36:-31,37:36:469],[-471:36:-39,29:36:461],[-455:36:-23,45:36:477],[-477:36:-45,23:36:455],[-461:36:-29,39:36:471],[-469:36:-37,31:36:463],[-453:36:-21,47:36:479],[-481:36:-49,19:36:451], [-465:36:-33,35:36:467], [-473:36:-41,27:36:459], [-457:36:-25,43:36:475] for 52-tone dRU8, [-482:36:-50,18:36:450], [-466:36:-34,34:36:466] for 52-tone dRU9, [-474:36:-42,26:36:458], [-458:36:-26,42:36:474] for 52-tone dRU11, [-478:36:-46,22:36:454], [-462:3 6:-30,38:36:470], [-470:36:-38,30:36:462],[-454:36:-22,46:36:478] for 52-tone dRU12, [-476:36:-44,24:36:456],[-460:36:-28,40:36:472] for 52-tone dRU14, [-468:36:-36,32:36:464],[-452:36:-20,48:36:480] for 52-tone dRU15, [-480:36:-48,20:36:452],[-464:36:-32,36:36:468], and [-472:36:-40,28:36:460],[-456:36:-24,44:36:476] for 52-tone dRU16; wherein the data and pilot subcarrier indexes of the 106-tone dRU on the 80 MHz bandwidth include: 52-tone [dRU1-dRU2], [-495,485] for 106-tone dRU1, 52-tone [dRU3-dRU4], [-491,489] for For 106-tone dRU2, 52-tone [dRU5-dRU6], [-489,491] for 106-tone dRU3, 52-tone [dRU7-dRU8], [-493,487] for 106-tone dRU4, 52-tone [dRU9-dRU10], [-494,486] for 106-tone dRU5, 52-tone [dRU11-dRU12], [-490,490] for 106-tone dRU6, 52-tone [dRU1 3~dRU14], [-488,492] for 106-tone dRU7, and 52-tone [dRU15~dRU16], [-492,488] for 106-tone dRU8; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 80 MHz bandwidth include: [-499:4:-19,17:4:497] for 242-tone dRU1, [-497:4:-17,19:4:499] for 242-tone dRU2 , [-498:4:-18,18:4:498] for 242-tone dRU3, and [-496:4:-16,20:4:500] for 242-tone dRU4; wherein the data and pilot subcarrier indexes of the 484-tone dRU on the 80 MHz bandwidth include: [-499:2:-17,17:2:499] for 484-tone dRU1, and [-498:2:-16,18:2:500] for 484-tone dRU2. ,

[0014] In some embodiments, allocating multiple subcarriers of the RU over the bandwidth to generate a dRU or dMRU further comprises generating the dMRU by combining a first dRU of a first size and a second dRU of a second size, the second size being different from the first size.

[0015] In some embodiments, the dMRU includes a 78-tone dMRU and / or a 132-tone dMRU, wherein the 78-tone dM·2RU is constructed by one of the following: one of three combinations of one 26-tone dRU and one 52-tone dRU on each 20 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth; or one of six combinations of one 26-tone dRU and one 52-tone dRU on each 40 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth; or one of six combinations of one 26-tone dRU and one 52-tone dRU on each 80 MHz frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth. One of eight combinations of tone dRUs; wherein the 132-tone dMRU is constructed by one of the following: one of two combinations of one 26-tone dRU and one 106-tone dRU on each 20 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth; or one of four combinations of one 26-tone dRU and one 106-tone dRU on each 40 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth; or one of four combinations of one 26-tone dRU and one 106-tone dRU on each 80 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth.

[0016] In some embodiments, the dMRU is generated by a corresponding dRU subcarrier index from a table of multiple dRUs of different sizes.

[0017] In a second aspect, the present invention provides an apparatus for optimizing a distributed resource unit tone scheme, comprising: a transceiver configured to transmit and receive wirelessly; and a processor coupled to the transceiver and configured to perform the following operations: allocating multiple subcarriers of a resource unit RU on a bandwidth to generate a distributed tone RU dRU or a distributed tone multi-RU dMRU; and communicating with a communication entity using the dRU or the dMRU; wherein, in the process of allocating multiple subcarriers of the RU to generate the dRU or the dMRU, the processor is configured to: allocate the multiple subcarriers of the RU on a predetermined span on each 20 MHz frequency segment or frequency subblock in the bandwidth, wherein the predetermined span has an interval around a center direct current (DC) tone to reduce a peak to average power ratio (PAPR) in communication with the communication entity.

[0018] In some embodiments, for each 20 MHz frequency segment or frequency sub-block, the predetermined span includes a span across 241 tones and the tone distribution range is [-120:-2, 2:120], wherein the interval includes at least three DC tones surrounding the central DC tone.

[0019] In some embodiments, for each 20 MHz frequency segment or frequency sub-block, the predetermined span comprises a span across 243 tones and the tone distribution range is [-121:-3,3:121], wherein the interval comprises at least five DC tones surrounding the central DC tone.

[0020] In some embodiments, the interval is dRU pitch spacing D td And, for each 20MHz frequency segment or frequency sub-block in the bandwidth, the interval is expressed as n*D td , where n=1, 2, 3 or 4.

[0021] In some embodiments, the plurality of subcarriers of the RU are allocated over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indexes of the 26-tone dRU over a 20 MHz bandwidth include: [-120:9:-12, 6:9:114] for 26-tone dRU1, [-116:9:-8, 10:9:118] for 26-tone dRU2, [-118:9:-10,8:9:116] for 26-tone dRU3, [-114:9:-6,12:9:120] for 26-tone dRU4, [-112:9:-4,5:9:113] for 26-tone dRU5, [-119:9:-11,7:9:115] for 26-tone dRU6, [-115:9:-7,11:9:119] for 26-tone dRU7 , [-117:9:-9,9:9:117] for 26-tone dRU8, and [-113:9:-5,4:9:112] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1, dRU2] for 52-tone dRU1, 26-tone [dRU3, dRU4] for 52-tone dRU2, 26-tone [dRU6, dRU7] are used for 52-tone dRU3, and 26-tone [dRU8, dRU9] are used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20MHz bandwidth include: 26-tone [dRU1~dRU4], [-3, 3] for 106-tone dRU1, and 26-tone [dRU6~dRU9], [-2, 2] for 106-tone dRU2.

[0022] In some embodiments, the plurality of subcarriers of the RU are allocated over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indices of the 26-tone dRU over the 20 MHz bandwidth include: [-121:9:-13,5:9:113] for 26-tone dRU1, [-117:9:-9,9:9:117] for 26-tone dRU2, [-119:9:-11,7:9:115] for 26-tone dRU3, [-115:9:-7,11:9:119] for 26-tone dRU4, [-113:9:-5,13:9:121] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-116:9:-8,10:9:118] for 26-tone dRU7, [-118:9:-10,8:9:116] for 26-tone dRU8, and [-114:9:-6,12:9:120] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1, dRU2] for 52-tone dRU1, 26-tone [dRU3, dRU4] for 52-tone dRU2, 26-tone [dRU6, dRU7] are used for 52-tone dRU3, and 26-tone [dRU8, dRU9] are used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20MHz bandwidth include: 26-tone [dRU1~dRU4], [-4, 3] are used for 106-tone dRU1, and 26-tone [dRU6~dRU9], [-3, 4] are used for 106-tone dRU2.

[0023] In some embodiments, the plurality of subcarriers of the RU are allocated over a 40 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, a 106-tone dRU, or a 242-tone dRU, wherein the data and pilot subcarrier indices of the 26-tone dRU over the 40 MHz bandwidth include: [-242:18:-26,10:18:226] for 26-tone dRU1, [-233:18:-17,19:18:235] for 26-tone dRU2, [-2 38:18:-22,14:18:230] for 26-tone dRU4, [-229:18:-13,23:18:239] for 26-tone dRU5, [-225:18:-9,27:18:243] for 26-tone dRU6, [-240:18:-24,12:18:228] for 26-tone dRU7, [-231:18:-15,21:18:237] for 26-tone dRU8, [-236:18:-20,16 :18:232] for 26-tone dRU9, [-227:18:-11,25:18:241] for 26-tone dRU10, [-241:18:-25,11:18:227] for 26-tone dRU11, [-232:18:-16,20:18:236] for 26-tone dRU12, [-237:18:-21,15:18:231] for 26-tone dRU13, [-228:18:-12,24:18:24 0], [-234:18:-18,18:18:234] for 26-tone dRU14, [-239:18:-23,13:18:229] for 26-tone dRU15, [-230:18:-14,22:18:238] for 26-tone dRU16, [-235:18:-19,17:18:233] for 26-tone dRU17, and [-226:18:-10,26:18:242] for 26-tone dRU18;The data and pilot subcarrier indices of the 52-tone dRU on the 40 MHz include: [-242:9:-17,10:9:235] for 52-tone dRU1, [-238:9:-13,14:9:239] for 52-tone dRU2, [-240:9:-15,12:9:237] for 52-tone dRU3, [-236:9:-11,12:9:238] for 52-tone dRU4. 16:9:241] for 52-tone dRU5, [-241:9:-16,11:9:236] for 52-tone dRU6, [-237:9:-12,15:9:240] for 52-tone dRU7, [-239:9:-14,13:9:238], and [-235:9:-10,17:9:242] for 52-tone dRU8; wherein, in the 40 MHz The data and pilot subcarrier indices of the 106-tone dRU on the bandwidth include: 26 tones [dRU1-dRU4], [-8,5] for 106-tone dRU1, 26 tones [dRU6-dRU9], [-6,7] for 106-tone dRU2, 26 tones [dRU10-dRU13], [-7,6] for 106-tone dRU3, and 26 tones [dRU15-dRU18], [-5, 8] for 106-tone dRU4; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 40 MHz include: 106-tone [dRU1-dRU2], 26-tone dRU5 and [-244,-4,3,9] for 242-tone dRU1, and 106-tone [dRU3-dRU4], 26-tone dRU14 and [-243,-3,4,244] for 242-tone dRU2. ;

[0024] In some embodiments, the plurality of subcarriers of the RU are allocated over an 80 MHz bandwidth to generate a 52-tone dRU, a 106-tone dRU, a 242-tone dRU, or a 484-tone dRU, wherein data and pilot subcarrier indices of the 52-tone dRU over the 80 MHz bandwidth include: [-483:36:-51,17:36:449], [-467:36:-35,33:36:465] for 52-tone dRU1, [-475:36:-43,25:36:457], [-459:36:-27,41:36:473] for 52-tone dRU2, [-479:36:-47,2 1:36:453],[-463:36:-31,37:36:469],[-471:36:-39,29:36:461],[-455:36:-23,45:36:477],[-477:36:-45,23:36:455],[-461:36:-29,39:36:471],[-469:36:-37,31:36:463],[-453:36:-21,47:36:479],[-481:36:-49,19:36:451], [-465:36:-33,35:36:467], [-473:36:-41,27:36:459], [-457:36:-25,43:36:475] for 52-tone dRU8, [-482:36:-50,18:36:450], [-466:36:-34,34:36:466] for 52-tone dRU9, [-474:36:-42,26:36:458], [-458:36:-26,42:36:474] for 52-tone dRU11, [-478:36:-46,22:36:454], [-462:3 6:-30,38:36:470], [-470:36:-38,30:36:462],[-454:36:-22,46:36:478] for 52-tone dRU12, [-476:36:-44,24:36:456],[-460:36:-28,40:36:472] for 52-tone dRU14, [-468:36:-36,32:36:464],[-452:36:-20,48:36:480] for 52-tone dRU15, [-480:36:-48,20:36:452],[-464:36:-32,36:36:468], and [-472:36:-40,28:36:460],[-456:36:-24,44:36:476] for 52-tone dRU16; wherein the data and pilot subcarrier indexes of the 106-tone dRU on the 80 MHz bandwidth include: 52-tone [dRU1-dRU2], [-495,485] for 106-tone dRU1, 52-tone [dRU3-dRU4], [-491,489] for For 106-tone dRU2, 52-tone [dRU5-dRU6], [-489,491] for 106-tone dRU3, 52-tone [dRU7-dRU8], [-493,487] for 106-tone dRU4, 52-tone [dRU9-dRU10], [-494,486] for 106-tone dRU5, 52-tone [dRU11-dRU12], [-490,490] for 106-tone dRU6, 52-tone [dRU1 3~dRU14], [-488,492] for 106-tone dRU7, and 52-tone [dRU15~dRU16], [-492,488] for 106-tone dRU8; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 80 MHz bandwidth include: [-499:4:-19,17:4:497] for 242-tone dRU1, [-497:4:-17,19:4:499] for 242-tone dRU2 , [-498:4:-18,18:4:498] for 242-tone dRU3, and [-496:4:-16,20:4:500] for 242-tone dRU4; wherein the data and pilot subcarrier indexes of the 484-tone dRU on the 80 MHz bandwidth include: [-499:2:-17,17:2:499] for 484-tone dRU1, and [-498:2:-16,18:2:500] for 484-tone dRU2. ,

[0025] In some embodiments, in the process of allocating multiple subcarriers of the RU on the bandwidth to generate a dRU or a dMRU, the processor is further configured to: generate the dMRU by combining a first dRU of a first size and a second dRU of a second size, the second size being different from the first size, and the dMRU comprises a 78-tone dMRU or a 132-tone dMRU, wherein the 78-tone dMRU is constructed by one of the following: one of three combinations of a 26-tone dRU and a 52-tone dRU on each 20 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth; or one of six combinations of a 26-tone dRU and a 52-tone dRU on each 40 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth; or one of eight combinations of a 26-tone dRU and a 52-tone dRU on each 80 MHz frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth;

[0026] The 132-tone dMRU is constructed by one of the following: one of two combinations of one 26-tone dRU and one 106-tone dRU on each 20 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth; or one of four combinations of one 26-tone dRU and one 106-tone dRU on each 40 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth; or one of four combinations of one 26-tone dRU and one 106-tone dRU on each 80 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth.

[0027] It is worth noting that although the description provided herein may be in the context of certain radio access technologies, networks, and network topologies (e.g., Wi-Fi), the concepts, schemes, and any variants / derivatives thereof proposed may be implemented in, used for, or implemented by other types of radio access technologies, networks, and network topologies, such as, but not limited to, Bluetooth, ZigBee, Fifth Generation (5G) / New Radio (NR), Long-Term Evolution (LTE), LTE-Advanced, LTE-Advanced Pro, Internet-of-Thing (IoT), Industrial IoT (IIoT), and narrowband IoT (NB-IoT). Therefore, the scope of the present invention is not limited to the examples described herein.

[0028] Those skilled in the art will no doubt understand these and other objects of the present invention after reading the following detailed description of the preferred embodiments shown in the accompanying drawings. The detailed description will be given in the following embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated into and constitute a part of the present invention. The accompanying drawings illustrate embodiments of the present invention and together with the detailed description are used to explain the principles of the present invention. It is understood that in order to clearly illustrate the concepts of the present invention, the accompanying drawings are not necessarily drawn to scale, as some components may be shown to be out of scale with the dimensions in actual implementation.

[0030] Figure 1 is a schematic diagram of an example network environment in which various solutions and schemes according to the present invention may be implemented.

[0031] Figure 2A , Figure 2B and Figure 2C Each of them is a schematic diagram of corresponding aspects of an exemplary design under the proposed scheme of the present invention.

[0032] Figure 3 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0033] Figure 4 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0034] Figure 5 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0035] Figure 6 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0036] Fig. 7A and Figure 7B Each of them is a schematic diagram of an exemplary design according to the scheme proposed in the present invention.

[0037] Figure 8 It is a schematic diagram of an exemplary design according to the solution proposed in the present invention.

[0038] Fig. 9A and Fig. 9B Each of them is a schematic diagram of a corresponding aspect of an exemplary design under the proposed scheme of the present invention according to the present invention.

[0039] Fig.10 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0040] Fig.11 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0041] Fig.12 It is a schematic diagram of an exemplary design according to the solution proposed in the present invention.

[0042] Fig.13 It is a schematic diagram of an exemplary design according to the solution proposed in the present invention.

[0043] Fig.14A and Fig. 14B Each of them is a schematic diagram of corresponding aspects of an exemplary design under the proposed scheme of the present invention.

[0044] Fig.15 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0045] Fig.16 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0046] Fig.17A , Fig. 17B and Fig. 17C Each of them is a schematic diagram of a corresponding part of an exemplary design under the scheme proposed in the present invention.

[0047] Fig.18 It is a schematic diagram of an exemplary design according to the solution proposed in the present invention.

[0048] Fig.19A , Fig.19B and Fig.19C Each of them is a schematic diagram of corresponding aspects of an exemplary design under the proposed scheme of the present invention.

[0049] Fig. 20A , Fig. 20B and Fig. 20C Each of them is a schematic diagram of a corresponding portion of an exemplary design according to the proposed scheme of the present invention.

[0050] Fig.21 It is a schematic diagram of an exemplary design according to the solution proposed in the present invention.

[0051] Fig. 22 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0052] Fig.23 is a schematic diagram of an example scenario under the solution proposed by the present invention.

[0053] Fig.24 It is a schematic diagram of an exemplary design according to the solution proposed in the present invention.

[0054] Fig.25is a block diagram of an example communication system according to an embodiment of the present invention.

[0055] Fig.26 is a flow chart of an example process according to an embodiment of the present invention.

[0056] In the following detailed description, for the purpose of illustration, many specific details are set forth so that those skilled in the art can more thoroughly understand the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details, and different embodiments may be combined as needed, and should not be limited to the embodiments listed in the accompanying drawings. DETAILED DESCRIPTION

[0057] The following description is a preferred embodiment of the present invention, which is only used to illustrate the technical features of the present invention, and is not used to limit the scope of the present invention. Certain words are used throughout the specification and claims to refer to specific components. It should be understood by those skilled in the art that manufacturers may use different names to refer to the same components. Therefore, the present specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a basis for distinction. The terms "component", "system" and "device" used in the present invention can be entities related to computers, wherein the computer can be hardware, software, or a combination of hardware and software. The terms "including" and "comprising" mentioned in the following description and claims are open-ended terms, so they should be interpreted as "including, but not limited to...". In addition, the term "coupled" means an indirect or direct electrical connection. Therefore, if a device is described as coupled to another device, it means that the device can be directly electrically connected to the other device, or indirectly electrically connected to the other device through other devices or connection means.

[0058] Corresponding numbers and symbols in the various figures of the drawings generally refer to corresponding parts unless otherwise indicated. The drawings are drawn to clearly illustrate the relevant parts of the embodiments and are not necessarily drawn to scale.

[0059] The term "substantially" or "approximately" as used herein means that within an acceptable range, a person skilled in the art can solve the technical problem to be solved and basically achieve the technical effect to be achieved. For example, "approximately equal to" means that a certain error from "completely equal to" is acceptable to a person skilled in the art without affecting the correctness of the result.

[0060] Overview

[0061] Embodiments according to the present invention relate to various technologies, methods, schemes and / or solutions related to the optimization of the distributed RU tone scheme to reduce PAPR in the 6GHz LPI system. According to the present invention, a variety of feasible solutions can be implemented individually or in combination. That is, although these feasible solutions are described separately below, two or more of these feasible solutions can be implemented in one combination or another combination.

[0062] It is worth noting that in the present invention, a regular RU (rRU) refers to an RU with continuous and non-staggered, interleaved or distributed tones. In addition, a 26-tone regular RU (rRU) can be interchangeably represented as RU26 (or rRU26), a 52-tone regular RU can be interchangeably represented as RU52 (or rRU52), a 106-tone regular RU can be interchangeably represented as RU106 (or rRU106), a 242-tone regular RU can be interchangeably represented as RU242 (or rRU242), and so on. A person of ordinary skill in the art should understand the meaning of a regular RU (rRU) and a distributed RU (dRU), for example, a regular RU (rRU) consists of a plurality of continuous tones in the physical frequency domain, and a dRU (distributed RU) consists of a plurality of discontinuous (i.e., dispersed) tones (or interchangeably referred to as subcarriers) in the physical frequency domain. It can be understood that rRU26 refers to a resource unit (RU) allocated with 26 tones and the 26 tones are continuous, and dRU26 refers to a resource unit (RU) allocated with 26 tones and the 26 tones are dispersed. In addition, a regular multi-RU (MRU) with aggregated (26+52) tones can be interchangeably expressed as MRU78 (or rMRU78), a regular MRU with aggregated (26+106) tones can be interchangeably expressed as MRU132 (or rMRU132), and so on. Furthermore, in the present invention, a 26-tone (represented as "26-tone" in the accompanying drawings) distributed-tone RU can be interchangeably represented as dRU26, a 52-tone (represented as "52-tone" in the accompanying drawings) distributed-tone RU can be interchangeably represented as dRU52, a 106-tone (represented as "106-tone" in the accompanying drawings) distributed-tone RU can be interchangeably represented as dRU106, a 242-tone (represented as "242-tone" in the accompanying drawings) distributed-tone RU can be interchangeably represented as dRU242, and so on. In addition, a distributed-tone MRU of aggregated (26+52) tones can be interchangeably represented as dMRU78, a distributed-tone MRU of aggregated (26+106) tones can be interchangeably represented as dMRU132, and so on.

[0063] Since the above examples are merely illustrative examples and not an exhaustive list of all possibilities, the same applies to regular RUs (rRUs), distributed-tone RUs (dRUs), MRUs, and distributed-tone MRUs (dMRUs) of different sizes / sizes (or different numbers of tones). It is also worth noting that in the present invention, a bandwidth (also described as bandwidth) of 20 MHz can be interchangeably represented as BW20, a bandwidth / bandwidth of 40 MHz can be interchangeably represented as BW40, a bandwidth / bandwidth of 80 MHz can be interchangeably represented as BW80, a bandwidth / bandwidth of 160 MHz can be interchangeably represented as BW160, a bandwidth / bandwidth of 240 MHz can be interchangeably represented as BW240, and a bandwidth / bandwidth of 320 MHz can be interchangeably represented as BW320. It can be understood that in the present invention, the 80 MHz bandwidth / bandwidth (BW80) can also be replaced by an 80 MHz frequency sub-block (or frequency segment), for example, two 80 MHz frequency sub-blocks under a 160 MHz bandwidth / bandwidth, and so on. It is also noteworthy that in the present invention, a 26-tone interleaved-tone or interlaced-tone RU may be interchangeably represented as iRU26 and dRU26 (26-tone distributed-tone RU), a 52-tone interleaved-tone or interlaced-tone RU may be interchangeably represented as iRU52 and dRU52 (52-tone distributed-tone RU), a 106-tone interleaved-tone or interlaced-tone RU may be interchangeably represented as iRU106 and dRU106 (106-tone distributed-tone RU), a 242-tone interleaved-tone or interlaced-tone RU may be interchangeably represented as iRU242 and dRU242 (242-tone distributed-tone RU), and a 484-tone interleaved-tone or interlaced-tone RU may be interchangeably represented as iRU484 and dRU484 (484-tone distributed-tone RU). In addition, the term "frequency segment" is interchangeably referred to as a "frequency subblock" in this document. In addition, for simplicity, in this document, the term "dRU" can represent both dRU and dMRU, that is, the "dRU" described in the present invention can represent both distributed tone RU and distributed tone multi-RU, but does not specifically refer to distributed tone RU.

[0064] Figure 1 An example network environment 100 is shown in which various solutions and techniques according to the present invention may be implemented. Figure 2A / Figure 2B / Figure 2C to Figure 26An example of implementation of various proposed solutions in a network environment 100 according to the present invention is shown. Figures 1 to 26 , the following description of various proposed schemes is provided.

[0065] refer to Figure 1 , the network environment 100 may involve a communication entity 110 and a communication entity 120 that wirelessly communicate (e.g., in a WLAN (wireless local area network) according to one or more IEEE (Institute of Electrical and Electronics Engineers) 802.11 standards). For example, the communication entity 110 may be a first station (STA) and the communication entity 120 may be a second STA, wherein each of the first STA and the second STA functions as an AP STA or a non-AP STA. Therefore, as described herein, under various proposed schemes according to the present invention, the communication entity 110 and the communication entity 120 are configured to perform wireless communications using an optimized distributed RU tone scheme according to various proposed schemes of the present invention to reduce PAPR (peak-to-average power ratio, referred to as peak-to-average ratio, which refers to the ratio of signal peak power to average power) in a 6 GHz LPI system.

[0066] Figure 2A , Figure 2B and Figure 2C Respective aspects of an example design 200 of a dRU tone scheme for BW20 according to the proposed scheme of the present invention are shown. Specifically, Figure 2A An example of the distribution of dRUs on BW20 is shown. Figure 2B shows an example of a dRU tone distribution pattern, and, Figure 2C An example of the parameters used to generate the dRU tone scheme under the proposed scheme is shown. Figure 2AIn the first method (method 1) according to the proposed scheme of the present invention, the dRU tone scheme for BW20 has a tone distribution range located on [-120:-2,2:120], and in the first method, the central DC (direct current) tone is surrounded by three DC tones including the central DC tone. In the second method (method 2) according to the proposed scheme of the present invention, the dRU tone scheme for BW20 has a tone distribution range on [-121:-3,3:121], and in the second method, the central DC tone is surrounded by at least five DC tones (including the DC tone) to achieve optimal power boost gain. In the present invention, the second method can mitigate / mitigate the performance loss caused by the smaller number of DC tones in the first method. Reference Figure 2B An example of a dRU tone distribution pattern is a periodicity or repetition period N for each of dRU26, dRU52, and dRU106. p When Np is 9 (or Np=9). Figure 2C , which shows the parameters for each of dRU26, dRU52 and dRU106 (Np=9) under the proposed solution of the present invention, for example, the parameters RU for BW20 start and l i In the present invention, RU start represents the first tone index or starting tone index of dRU, and l i It should be noted that the parameters in the present invention do not distinguish between upper and lower scripts, for example, Np and N p Refers to the same parameters, RUstart and RU start refer to the same parameter, and so on.

[0067] Under the scheme for reducing PAPR proposed according to the present invention, the dRU on BW20 can be spread / distributed over the tone distribution range of [-120:-2,2:120] or [-121:-3,3:121] to achieve the best power boost gain. According to an embodiment of the present invention, after optimizing the dRU tone scheme, the 26-tone dRU can achieve a PAPR similar to that of a regular RU. Under the scheme proposed by the present invention, several different methods can be used to reduce the PAPR for the dRU on BW20. Figure 3 An example scenario 300 under the proposed scheme of the present invention is shown. Figure 4 , Figure 5 and Figure 6Each of them shows an example scenario 400, 500 or 600 of reducing PAPR performance for dRUs of respective / corresponding sizes on BW 20 under the proposed solution of the present invention. Fig. 7A An example design 700A of a dRU tone scheme for BW20 under the first option (Option 1) of the proposed scheme is shown. Figure 7B An example design 700B of another dRU tone scheme for BW20 under Option 1 of the proposed scheme is shown. Figure 8 An example design 800 of a dRU tone scheme for BW20 under the second option (Option 2) of the proposed scheme is shown.

[0068] refer to Figure 3 , one method involves searching for K based on the dRU generation formula L1st (index of the first left-hand dRU subcarrier or tone located on the left side of the tone distribution) and N dc Another method involves creating a gap G (gap) around multiple DC tones, which in some embodiments is the dRU tone separation distance (D td ), dRU pitch spacing D td It can be expressed as the number of tones. For example, in Fig. 7A In the embodiment shown, for a 26-tone dRU at 20 MHz, D td =9, for example, in Fig.12 In the embodiment shown, for a 26-tone dRU at 40 MHz, D td = 18. In some embodiments, the interval G around the DC tone (i.e., the spacing between the last negative tone index and the first positive tone index of a single dRU, e.g., Fig. 7A In the embodiment of the present invention, for the 26-tone dRU1 at 20 MHz, the last negative tone index is -12 and the first positive tone index is 6, so the interval G = 18, and similarly for the 26-tone dRU9 at 20 MHz, the last negative tone index is -5 and the first positive tone index is 4, so the interval G = 9) = n*D td , where n represents a multiplication factor, which represents a positive integer, for example, n=1, 2, 3, 4, ... For a dRU on BW20, for example, for a dRU26 on BW20, D td =9, n=3 or n=2 or n=1 can be implemented to reduce PAPR. Similar rules apply to dRU on BW40 and BW80. Figure 4An example scenario 400 for reducing PAPR performance is shown for dRU 26 on BW 20 . Figure 5 An example scenario 500 for reducing PAPR performance is shown for dRU 52 on BW 20 . Figure 6 An example scenario 600 for reducing PAPR performance is shown for dRU 106 on BW 20. In a trigger-based (TB) 20 MHz extremely-high-throughput (EHT) physical-layer protocol data unit (PPDU) for a 6 GHZ LPI system, Fig. 7A An example design 700A of a dRU tone scheme for data and pilot subcarrier (or tone) indices (i.e., data subcarrier index and pilot subcarrier index) is shown for dRU26, dRU52, and dRU106 (where Np=9). In a 20MHz EHT TB PPDU for a 6GHZ LPI system, Figure 7B An example design 700B of a dRU tone scheme for data and pilot subcarrier (or tone) indexing is shown for dRU26, dRU52, and dRU106 (where Np=9). In a 20MHz EHT TB PPDU for a 6GHZ LPI system, Figure 8 An example design 800 of a dRU tone scheme of data and pilot subcarrier (or tone) indexes is shown for dRU26, dRU52, and dRU106 (where Np=9). Fig. 7A , Figure 7B and Figure 8 In each table, i represents the dRU index on BW20 or frequency segment or frequency subblock.

[0069] According to the solution proposed in the present invention, several different methods can be used to reduce the PAPR for the dRU on BW40. Fig. 9A and 9B Various aspects of an example design 900 of a dRU tone scheme for BW40 under the proposed scheme of the present invention are shown separately. Fig.10 and Fig.11 An example scenario 1000 or 1100 of reducing PAPR performance for a dRU of a corresponding size on BW40 under the proposed solution of the present invention is shown respectively. Fig.12 An example design 1200 of a dRU tone scheme for BW40 under the first option (Option 1) of the proposed scheme is shown. Fig.13An example design 1300 of a dRU tone scheme for BW40 under the second option (Option 2) of the proposed scheme is shown.

[0070] refer to Fig. 9A , an example of a dRU tone distribution pattern is for each of dRU26, dRU52, dRU106, and dRU242 on BW40, and Np=18. It can be seen that for dRU242, under this proposed scheme, the tones are uniformly distributed, making it easy to implement. The implementation of the proposed scheme can achieve perfect uniformity for the tone distribution of dRU242 on BW40. Reference Fig. 9B , which shows the parameters of each of dRU26, dRU52, dRU106 and dRU242 on BW40 (where Np=18) under the proposed scheme, for example, RU for BW40 start and l i . Fig.10 An example scenario 1000 for reducing PAPR performance is shown for dRU 26 on BW 40, and Fig.11 An example scenario 1100 for reducing PAPR performance is shown for dRU 242 on BW40. It can be seen that after optimization according to this proposed solution, both 26-tone dRU and 242-tone dRU can achieve similar PAPR as rRU on BW40. In a 40MHz EHT TB PPDU for a 6GHZ LPI system, Fig.12 An example design 1200 of a dRU tone scheme for data and pilot subcarrier (or tone) indexing is shown for dRU26, dRU52, dRU106, and dRU242 (where Np=18). In a 40 MHz EHT TB PPDU for a 6 GHZ LPI system, Fig.13 An example design 1300 of a dRU tone scheme of data and pilot subcarrier (or tone) indexes is shown for dRU26, dRU52, dRU106, and dRU242 (where Np=18).

[0071] Under the proposed scheme according to the present invention, two options (Option 1 and Option 2) are available to reduce PAPR for dRU on BW80. Fig.14A and 14B Each of them shows respective aspects of an example design 1400 of a dRU tone scheme for BW80 under Option 1 of the proposed scheme. Fig.15 and Fig.16An example scenario 1500 or 1600 of reduced PAPR performance for a corresponding size of dRU on BW80 under Option 1 of the proposed scheme is shown, respectively. Fig.17A , Fig. 17B and Fig. 17C Each of shows a corresponding portion of an example design 1700 of a dRU tone scheme for BW80 under Option 1 of the proposed scheme. Fig.18 An example design 1800 of a dRU tone scheme for BW80 under Option 1 of the proposed scheme is shown.

[0072] refer to Fig.14A , an example of a dRU tone distribution pattern is for each of dRU26, dRU52, dRU106, dRU242, and dRU484, and Np=36. It can be seen that for dRU242 and dRU484, the tones are evenly distributed under this proposed scheme. Therefore, the implementation of the proposed scheme of the present invention can achieve perfect uniformity in tone distribution for dRU242 and dRU484 on BW80, making it easy to implement. Reference Fig. 14B , which shows parameters for each of dRU26, dRU52, dRU106, dRU242 and dRU484 (where Np=36) under the proposed solution of the present invention, for example, RU for BW80 start and l i .exist Fig. 14B In the table shown, V = [0, 16, 8, 24, 32, 4, 20, 12, 28, 6, 22, 14, 30, 34, 2, 18, 10, 26]. Advantageously, the proposed scheme of the present invention is able to achieve the best power boost gain for all listed dRU sizes, and is repeatable for all dRUs. Fig.15 An example scenario 1500 for reducing PAPR performance is shown for dRU 242 on BW80, and, Fig.16 An example scenario 1600 for reducing PAPR performance is shown for dRU 484 on BW80. It can be seen that after optimization according to the proposed solution of the present invention, both 242-tone dRU and 484-tone dRU can achieve similar PAPR as rRU on BW80. Fig.17A , Fig. 17B and Fig. 17C A corresponding portion of an example design 1700 of a dRU tone scheme (Np=36) of data and pilot subcarrier (or tone) indexes is shown for each of dRU26, dRU52, dRU106, dRU242, and dRU484 (eg, as used in an 80 MHz EHT TB PPDU for a 6 GHZ LPI system). Fig.18An example design 1800 of a dRU tone scheme for data and pilot subcarrier (or tone) indexing is shown for dRU52, dRU106, dRU242, and dRU484 (eg, as used in an 80 MHz EHT TB PPDU for a 6 GHZ LPI system).

[0073] Fig.19A , Fig.19B and Fig.19C Each of shows respective aspects of an example design 1900 for a dRU tone scheme for BW80 under Option 2 of the proposed scheme. Fig. 20A , Fig. 20B and Fig. 20C Each of shows a corresponding portion of an example design 2000 of a dRU tone scheme for BW80 under Option 2 of the proposed scheme. Fig.21 An example design 2100 of a dRU tone scheme for BW80 is shown under Option 2 of the proposed scheme.

[0074] refer to Fig.19A , an example of dRU tone distribution pattern is for each of dRU52, dRU106, dRU242 and dRU484, and Np=36. It can be seen that for dRU484, under the scheme proposed by the present invention, the tones are evenly distributed, making it easy to implement. It can also be seen that dRU242 has two distribution patterns and dRU484 has one distribution pattern. Therefore, the implementation of the scheme proposed by the present invention can achieve perfect uniformity of tone distribution for dRU484 on BW80. Reference Fig.19B and Fig.19C , which shows parameters for each of dRU26, dRU52, dRU106, dRU242 and dRU484 (where Np=36) under the proposed solution of the present invention, for example, RU for BW80 start and l i .exist Fig.19B In the table shown, V = [0, 18, 8, 26, 16, 4, 22, 12, 30, 2, 20, 10, 28, 34, 6, 24, 4, 32]. Fig.19C In the table shown, V = [2, 20, 10, 28, 18, 6, 24, 14, 32, 4, 22, 12, 30, 0, 8, 26, 16, 34]. Advantageously, the proposed scheme can achieve the best power boost gain for all listed dRU sizes, and all dRUs are repeatable. Fig. 20A , Fig. 20B and Fig. 20CA corresponding portion of an example design 2000 of a dRU tone scheme (where Np=36) for data and pilot subcarrier (or tone) indexing is shown for each of dRU26, dRU52, dRU106, dRU242, and dRU484 (eg, as used in an 80 MHz EHT TB PPDU for a 6 GHZ LPI system). Fig.21 An example design 2100 of a dRU tone scheme (where Np=36) for data and pilot subcarrier (or tone) indexing is shown for dRU52, dRU106, dRU242, and dRU484 (eg, as used in an 80 MHz EHT TB PPDU for a 6 GHZ LPI system).

[0075] In accordance with the proposed scheme of the present invention, in addition to or instead of using the tone table shown in the figures and described above, the dRU subcarrier index may be calculated or otherwise generated using the following formula:

[0076]

[0077] In the above formula, k td represents the tone distribution pattern generated according to the proposed scheme. In addition, K L1st and N dc Depending on the bandwidth, different dRU tone schemes can be generated or optimized based on the formula. Under the proposed scheme of the present invention, for a given allocated bandwidth and logical RU size (size, also described as size), the tone distribution pattern of the dRU can be generated based on the following formula:

[0078] K td (r,k)=RU start (r)+l (i) +j*N p

[0079] Here, N p Indicates a periodic or repetitive cycle (e.g., in terms of the number of tones); (i) represents the distribution pattern of tones within a repetition period (e.g., every two or three tones, and so on); i = mod(k,L) = 0, 1, 2, ..., L–1; k=0,1,2,...,(N st_ru / 2)–1; r=1,2,...,N ru , where r is the logical RU index. In addition, l (i) ∈Ω ru = {l (0) ,l (1) ,...,l (L-1)}; L = |Ω ru│; For RU26,RU52,RU106,RU242,RU484,N st_ru =26,52,106,242,484. In addition, RU start (r) indicates dRU r The first tone index or starting tone index of the dRU (i.e., the dRU with dRU index r); l (i) Indicates a repetition distance or a repetition period of tone; N p Indicates the repetition distance or repetition period; L indicates the number of tones within a repetition distance or a repetition period; N st_ru N represents the number of subcarriers (or tones) used for dRU; ru Indicates the number of dRUs for a given dRU size in a given bandwidth. These parameters can be defined for different bandwidths.

[0080] It is worth noting that the various schemes proposed in this article regarding the dRU tone scheme can also be applied to the aggregation of multiple RUs to achieve the distribution of tones for MRU or dMRU. Fig. 22 An example scenario 2200 of a dMRU according to the proposed scheme of the present invention is shown. Fig.23 Another example scenario 2300 of a dMRU according to the proposed solution of the present invention is shown. Fig.24 An example design 2400 is shown in accordance with a proposed approach of the present invention.

[0081] refer to Fig. 22 and Fig.23 , in BW20, three MRUs (52+26) are allowed, and two MRUs (106+26) are also allowed. Under the first method of the proposed scheme, dMRUs are supported to have the same combination as regular MRUs (rMRUs), for example, three dMRUs (52+26) and two dMRUs (106+26). For example, similar to rMRUs, dMRU78_1=dRU52_2+dRU26_2, dMRU78_2=dRU52_2+dRU26_5, dMRU78_3=dRU52_3+dRU26_8, dMRU132_1=dRU106_1+dRU26_5, and dMRU132_2=dRU106_2+dRU26_5. Here, dMRU78=dMRU(52+26) and dMRU132=dMRU(106+26). The same principle applies to dMRU78 and dMRU132 for BW40 and BW80. Under the second method of the proposed scheme, the subcarrier index of the dMRU can be obtained from Fig.242400. The same method of generating dMRU subcarrier indices applies to dMRUs for BW20, BW40, and BW80. For example, dMRU78_1 can be constructed from 52-tone dRU2 and 26-tone dRU2. Similarly, dMRU132_2 can be constructed from 26-tone dRU5 and 106-tone dRU2.

[0082] Illustrative Embodiments

[0083] Fig.25 An example system 2500 having at least an example device 2510 and an example device 2520 according to an embodiment of the present invention is shown. Each of the device 2510 and the device 2520 can perform various functions to implement the schemes, techniques, processes and methods described in this specification related to optimizing the distributed RU tone scheme for reducing PAPR in a 6GHz LPI system, including the above-described various proposed designs, concepts, schemes, systems and methods and the processes described below. For example, the device 2510 can be an example implementation of the communication entity 110, and the device 2520 can be an example implementation of the communication entity 120.

[0084] Each of the devices 2510 and 2520 may be part of an electronic device, which may be a STA or an AP, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each of the devices 2510 and 2520 may be implemented in a smart phone, a smart watch, a personal digital assistant, a digital camera, or a computing device such as a tablet computer, a laptop computer, or a notebook computer. Each of the devices 2510 and 2520 may also be part of a machine-type device, which may be an Internet of Things (IoT) device, such as a fixed or non-mobile device, a home device, a wired communication device, or a computing device. For example, each of the devices 2510 and 2520 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented in a network device or as a network device, the device 2510 and / or the device 2520 may be implemented in a network node, such as an AP in a WLAN.

[0085] In some embodiments, each of the apparatus 2510 and the apparatus 2520 may be implemented in the form of one or more integrated-circuit (IC) chips, such as but not limited to one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. In the above various schemes, each of the apparatus 2510 and the apparatus 2520 may be implemented in or as a STA or AP. Each of the apparatus 2510 and the apparatus 2520 may include Fig.25 At least some of the components shown in the figure, such as processor 2512 and processor 2522, respectively. Each of the apparatus 2510 and the apparatus 2520 may also include one or more other components not related to the proposed solution of the present invention (e.g., internal power supply, display device and / or user interface device), so for simplicity, these components of the apparatus 2510 and the apparatus 2520 are not shown in the figure. Fig.25 is not shown in the figure and is not described below.

[0086] On the one hand, each of the processors 2512 and 2522 can be implemented in the form of one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, even if the singular term "processor" is used herein to refer to the processors 2512 and 2522, each of the processors 2512 and 2522 may include multiple processors in some embodiments, and may include a single processor in other embodiments. On the other hand, each of the processors 2512 and 2522 can be implemented in the form of hardware (optionally, firmware) with electronic components, including, for example but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more varactors configured and arranged to achieve a specific purpose according to the present invention. In other words, in at least some embodiments, each of the processors 2512 and 2522 is a dedicated machine specially designed, arranged, and configured to perform specific tasks, including those tasks related to the optimization of the distributed RU tone distribution scheme according to various embodiments of the present invention to reduce PAPR in a 6GHz LPI system. For example, each of processor 2512 and processor 2522 may be configured with hardware components or circuits to implement one, some, or all of the examples described and illustrated herein.

[0087] In some embodiments, the device 2510 may further include a transceiver 2516 coupled to the processor 2512. The transceiver 2516 may be capable of wirelessly transmitting and receiving data. In some embodiments, the device 2520 may further include a transceiver 2526 coupled to the processor 2522. The transceiver 2526 may include a transceiver capable of wirelessly transmitting and receiving data.

[0088] In some embodiments, the device 2510 may further include a memory 2514 coupled to the processor 2512 and accessible by the processor 2512 and storing data therein. In some embodiments, the device 2520 may further include a memory 2524 coupled to the processor 2522 and accessible by the processor 2522 and storing data therein. Each of the memory 2514 and the memory 2524 may include a random-access memory (RAM), such as a dynamic RAM (DRAM), a static RAM (SRAM), a thyristor RAM (T-RAM) and / or a zero-capacitor RAM (Z-RAM). Alternatively or additionally, each of the memory 2514 and the memory 2524 may include a type of read-only memory (ROM), such as a mask ROM, a programmable ROM (PROM), an erasable programmable ROM (EPROM), and / or an electrically erasable programmable ROM (EEPROM). Alternatively or additionally, each of the memory 2514 and the memory 2524 may include a type of non-volatile random-access memory (NVRAM), such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and / or phase-change memory.

[0089] Each of the apparatus 2510 and the apparatus 2520 may be a communication entity capable of communicating with each other using various proposed schemes according to the present invention. For illustrative purposes and not limitation, a description of the capabilities of the apparatus 2510 as the communication entity 110 and the apparatus 2520 as the communication entity 120 is provided below. It is worth noting that although the example implementation described below is provided in the context of a WLAN, it may also be implemented in other types of networks. Therefore, although the following description of the example implementation belongs to a scenario in which the apparatus 2510 acts as a transmitting device and the apparatus 2520 acts as a receiving device, the same also applies to another scenario in which the apparatus 2510 acts as a receiving device and the apparatus 2520 acts as a transmitting device.

[0090] Under the scheme proposed in accordance with the present invention for optimizing the distributed RU tone scheme to reduce PAPR in a 6GHz LPI system, device 2510 (e.g., processor 2512 of device 2510) distributes multiple subcarriers of RU on a bandwidth (e.g., a predetermined bandwidth, such as BW20, BW40, BW80, BW160, etc.) to generate / produce dRU or dMRU. In the process of allocating multiple subcarriers of the RU to generate a dRU or dMRU, the device 2510 (e.g., the processor 2512) allocates multiple subcarriers of the RU using a predefined span and a gap around a DC tone on each 20 MHz frequency segment (or frequency subblock) in the bandwidth (that is, the multiple subcarriers of the RU are allocated on a predetermined span on each 20 MHz frequency segment or frequency subblock in the bandwidth, wherein the predetermined span has a gap around a center DC tone to reduce the peak-to-average power ratio PAPR in communication with the communication entity), for example, the gap is at least the minimum size around the center DC tone (that is, including the minimum number of DC tones, for example, at least three DC tones or at least 5 DC tones in the first method above), so that the PAPR is reduced during communication with the communication entity. In addition, the device 2510 (e.g., the processor 2512) utilizes the dRU or dMRU and communicates with the communication entity through the transceiver 2516.

[0091] In some embodiments, the predetermined span on each 20 MHz frequency segment or frequency sub-block in the bandwidth includes a span across 241 tones, in which the predetermined span has a tone distribution range of [-120:-2,2:120]. In this case, the above interval includes at least three DC tones around the center DC tone. Alternatively, the predetermined span on each 20 MHz frequency segment or frequency sub-block in the bandwidth includes a range of 243 tones with a tone distribution range of [-121:-3,3:121]. In this case, the above interval may include at least five DC tones around the center DC tone within the tone distribution range.

[0092] In some embodiments, the interval may be a dRU tone spacing (D td In this case, for each 20MHz frequency segment or frequency sub-block in the bandwidth, the interval can be expressed as n*D td , for example, n=1, 2, 3 or 4.

[0093] In some embodiments, multiple subcarriers of the RU are allocated / distributed over a 20 MHz bandwidth (e.g., a 20 MHz frequency segment or frequency subblock also has a bandwidth of 20 MHz) to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU. In this case (e.g., see Fig. 7A ), the data and pilot subcarrier indices for the 26-tone dRU in 20 MHz bandwidth include: [-120:9:-12,6:9:114] for 26-tone dRU1, [-116:9:-8,10:9:118] for 26-tone dRU2, [-118:9:-10,8:9:116] for 26-tone dRU3, [-114:9:-6,12:9:120] for 26-tone dRU4 , [-112:9:-4,5:9:113] for 26-tone dRU5, [-119:9:-11,7:9:115] for 26-tone dRU7, [-115:9:-7,11:9:119] for 26-tone dRU8, and [-113:9:-5,4:9:112] for 26-tone dRU9. In addition, the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26 tones [dRU1, dRU2] for 52-tone dRU1 (in other words, 52-tone dRU1 includes 26 tones dRU1 and 26 tones dRU2), 26 tones [dRU3, dRU4] for 52-tone dRU2, 26 tones [dRU6, dRU7] for 52-tone dRU3, and 26 tones [dRU8, dRU9] for 52-tone dRU4. In addition, the data and pilot subcarrier indexes of the 106-tone dRU on the 20 MHz bandwidth include: 26 tones [dRU1~dRU4], [-3,3] for 106-tone dRU1 (in other words, 106-tone dRU1 includes 26 tones dRU1 to 26 tones dRU4 and 2 additional tones), and, 26 tones [dRU6~dRU9], [-2,2] for 106-tone dRU2.

[0094] In some embodiments, multiple subcarriers of the RU are allocated / distributed over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU. In this case (see, for example, Figure 8), the data and pilot subcarrier indices for the 26-tone dRU in a 20 MHz bandwidth include: [-121:9:-13,5:9:113] for 26-tone dRU1, [-117:9:-9,9:9:117] for 26-tone dRU2, [-119:9:-11,7:9:115] for 26-tone dRU3, [-115:9:-7,11:9:119] for 26-tone dRU4, ...17:9:-9,9:9:117] for 26-tone dRU [-113:9:-5,13:9:121] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-116:9:-8,10:9:118] for 26-tone dRU7, [-118:9:-10,8:9:116] for 26-tone dRU8, and [-114:9:-6,12:9:120] for 26-tone dRU9. In addition, the data and pilot subcarrier indexes for a 52-tone dRU over a 20 MHz bandwidth may include: 26 tones [dRU1, dRU2] for 52-tone dRU1, 26 tones [dRU3, dRU4] for 52-tone dRU2, 26 tones [dRU6, dRU7] for 52-tone dRU3, and 26 tones [dRU8, dRU9] for 52-tone dRU4. In addition, the data and pilot subcarrier indexes for a 106-tone dRU over a 20 MHz bandwidth may include: 26 tones [dRU1-dRU4], [-4, 3] for 106-tone dRU1, and 26 tones [dRU6-dRU9], [-3, 4] for 106-tone dRU2.

[0095] In some embodiments, multiple subcarriers of the RU are allocated / distributed over a 40 MHz bandwidth (e.g., a 40 MHz frequency segment or frequency subblock also has a bandwidth of 40 MHz) to generate a 26-tone dRU, a 52-tone dRU, a 106-tone dRU, or a 242-tone dRU. In this case (e.g., see Fig.13), the data and pilot subcarrier indices for a 26-tone dRU on a 40 MHz bandwidth may include: [-242:18:-26,10:18:226] for 26-tone dRU1, [-233:18:-17,19:18:235] for 26-tone dRU2, [-238:18:-22,14:18:230] for 26-tone dRU3, [-229:18:-13,23:18:234] for 26-tone dRU4, [-230:18:-23,19:18:236] for 26-tone dRU5, [-237:18:-23,19:18:237] for 26-tone dRU6, [-238:18:-23,19:18:238] for 26-tone dRU7, [-239:18:-1 :239], [-225:18:-9,27:18:243] for 26-tone dRU5, [-240:18:-24,12:18:228] for 26-tone dRU6, [-231:18:-15,21:18:237] for 26-tone dRU7, [-236:18:-20,16:18:232] for 26-tone dRU8, [-227:18:-11, 25:18:241], [-241:18:-25,11:18:227] for 26-tone dRU10, [-232:18:-16,20:18:236] for 26-tone dRU11, [-237:18:-21,15:18:231] for 26-tone dRU12, [-228:18:-12,24:18:240] for 26-tone dRU14, [- 234:18:-18,18:18:234] for 26-tone dRU15, [-239:18:-23,13:18:229] for 26-tone dRU16, [-230:18:-14,22:18:238] for 26-tone dRU17, and [-235:18:-19,17:18:233] for 26-tone dRU18. The data and pilot subcarrier indices for the 52-tone dRU at 40 MHz may include: [-242:9:-17,10:9:235] for 52-tone dRU1, [-238:9:-13,14:9:239] for 52-tone dRU2, [-240:9:-15,12:9:237] for 52-tone dRU3, [-236:9:-14,12:9:238] for 52-tone dRU4. :-11,16:9:241] for 52-tone dRU5, [-241:9:-16,11:9:236] for 52-tone dRU6, [-237:9:-12,15:9:240] for 52-tone dRU7, and [-235:9:-10,17:9:242] for 52-tone dRU8.Among them, the data and pilot subcarrier indexes of the 106-tone dRU on the 40MHz bandwidth include: 26 tones [dRU1~dRU4], [-8,5] for 106-tone dRU1, 26 tones [dRU6~dRU9], [-6,7] for 106-tone dRU2, 26 tones [dRU10~dRU13], [-7,6] for 106-tone dRU3, and 26 tones [dRU15~dRU18], [-5,8] for 106-tone dRU4. The data and pilot subcarrier indexes of the 242-tone dRU at 40 MHz include: 106-tone [dRU1-dRU2], 26-tone dRU5 and [-244, -4, 3, 9] for 242-tone dRU1, and 106-tone [dRU3-dRU4], 26-tone dRU14 and [-243, -3, 4, 244] for 242-tone dRU2.

[0096] In some embodiments, multiple subcarriers of the RU are allocated / distributed over the 80 MHz bandwidth to generate a 52-tone dRU, a 106-tone dRU, a 242-tone dRU, or a 484-tone dRU. In this case (see, for example, Fig.18), the data and pilot subcarrier indices for a 52-tone dRU on an 80 MHz bandwidth may include: [-483:36:-51,17:36:449], [-467:36:-35,33:36:465] for 52-tone dRU1, [-475:36:-43,25:36:457], [-459:36:-27,41:36:473], [-479:36:-47,21:36:453], [-463:36:-31,37:36:469] for 52-tone dRU3, [-471:36:-39,29:36:461], [-472:36:-39,29:36:462] for 52-tone dRU4. -455:36:-23,45:36:477], [-477:36:-45,23:36:455],[-461:36:-29,39:36:471], [-469:36:-37,31:36:463], [-453:36:-21,47:36:479], [-481:36:-49,19:36:451],[-465:36:-33,35:36:467] for 52 tone dRU7, [-473:36:-41,27:36:459],[-457:36:-25 ,43:36:475], [-482:36:-50,18:36:450],[-466:36:-34,34:36:466], [-474:36:-42,26:36:458],[-458:36:-26,42:36:474], [-478:36:-46,22:36:454],[-462:36:-30,38:36:470], [-470:36:-38,30:36:462],[-454:36:-22,46:36: 478], [-476:36:-44,24:36:456],[-460:36:-28,40:36:472] for 52-tone dRU13, [-468:36:-36,32:36:464],[-452:36:-20,48:36:480] for 52-tone dRU14, [-480:36:-48,20:36:452],[-464:36:-32,36:36:468] for 52-tone dRU15, and [-472:36:-40,28:36:460],[-456:36:-24,44:36:476] for 52-tone dRU16.In addition, the data and pilot subcarrier indexes for the 106-tone dRU on the 80 MHz bandwidth may include: 52 tones [dRU1-dRU2], [-495,485] for 106-tone dRU1, 52 tones [dRU3-dRU4], [-491,489] for 106-tone dRU2, 52 tones [dRU5-dRU6], [-489,491] for 106-tone dRU3, 52 tones [dRU7-dRU8], [-493,48 7] for 106-tone dRU4, 52-tone [dRU9~dRU10], [-494,486] for 106-tone dRU5, 52-tone [dRU11~dRU12], [-490,490] for 106-tone dRU6, 52-tone [dRU13~dRU14], [-488,492] for 106-tone dRU7, and 52-tone [dRU15~dRU16], [-492,488] for 106-tone dRU8. In addition, the data and pilot subcarrier indexes of the 242 tone dRU on the 80 MHz bandwidth may include: [-499:4:-19, 17:4:497] for 242 tone dRU1, [-497:4:-17, 19:4:499] for 242 tone dRU2, [-498:4:-18, 18:4:498] for 242 tone dRU3, and [-496:4:-16, 20:4:500] for 242 tone dRU4. In addition, the data and pilot subcarrier indexes of the 484 tone dRU on the 80 MHz bandwidth may include: [-499:2:-17, 17:2:499] for 484 tone dRU1, and [-498:2:-16, 18:2:500] for 484 tone dRU2.

[0097] In some embodiments, in the process of allocating multiple subcarriers of an RU on a bandwidth to generate a dRU or a dMRU, the device 2510 (e.g., the processor 2512) can generate a dMRU (e.g., 78-tone dMRU, 132-tone dMRU) by combining a first dRU of a first size and a second dRU of a second size, wherein the second size is different from the first size. In some embodiments, the dMRU may include: (i) a 78-tone dMRU constructed from one of the following: (a) one of three combinations of one 26-tone dRU and one 52-tone dRU on each 20 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth; (b) one of six combinations of one 26-tone dRU and one 52-tone dRU on each 40 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth; (c) one of eight combinations of one 26-tone dRU and one 52-tone dRU on each 80 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth. or, (ii) a 132-tone dMRU constructed from one of the following: (a) one of two combinations of one 26-tone dRU and one 106-tone dRU on each 20 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth; (b) one of four combinations of one 26-tone dRU and one 106-tone dRU on each 40 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth; or, (c) one of four combinations of one 26-tone dRU and one 106-tone dRU on each 80 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth. In some embodiments, the dMRU can be generated by corresponding dRU subcarrier indices from a table of multiple dRUs of different sizes (e.g., any of the tables shown in the various figures of the present invention).

[0098] Illustrative Process

[0099] Fig.26An example process 2600 is shown according to an embodiment of the present invention. Process 2600 may represent one aspect of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, process 2600 may represent one aspect of the proposed concepts and schemes related to optimizing the distributed RU tone scheme to reduce PAPR in a 6GHz LPI system according to the present invention. Process 2600 may include one or more operations, actions, or functions as shown in one or more of blocks (or interchangeably referred to as "steps") 2510 and 2620. Although shown as discrete blocks, the various blocks of process 2600 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. In addition, the blocks / sub-blocks of process 2600 may be arranged in blocks. Fig.26 2600. The process 2600 may be performed in the order shown, or in a different order. In addition, one or more of the blocks / sub-blocks of process 2600 may be performed repeatedly or repeatedly. Process 2600 may be implemented by device 2510 and device 2520 and any variants thereof or implemented in device 2510 and device 2520. For illustrative purposes only and without limiting the scope, process 2600 is described below in an environment where device 2510 acts as a communication entity 110 (e.g., a transmitting device for a STA or AP) and device 2520 acts as a communication entity 120 (e.g., a receiving device for a STA or AP) in a wireless network (e.g., a WLAN) according to one or more IEEE 802.11 standards. Process 2600 may start at block 2610.

[0100] At 2610, the process 2600 may include: the device 2510 (e.g., the processor 2512 of the device 2510) allocating / distributing multiple subcarriers of the RU on the bandwidth to generate a dRU or a dMRU. When allocating multiple subcarriers of the RU to generate the dRU or the dMRU, the process 2600 may include: the device 2510 (e.g., the processor 2512) allocates multiple subcarriers of the RU using a predetermined span and spacing on each 20MHz frequency segment or frequency subblock in the bandwidth (in other words, the multiple subcarriers of the RU are allocated on a predetermined span on each 20MHz frequency segment or frequency subblock in the bandwidth, wherein the predetermined span has a spacing around a center DC tone to reduce the peak-to-average power ratio PAPR in the communication with the communication entity), for example, the spacing is at least a minimum size around the center DC tone so that the PAPR is reduced during the communication with the communication entity. The process 2600 may proceed from 2610 to 2620.

[0101] At 2620 , process 2600 may include the processor 2512 communicating with a communication entity via the transceiver 2516 using the dRU or the dMRU.

[0102] In some embodiments, the predetermined span over each 20 MHz frequency segment or frequency sub-block in the bandwidth includes a range across 241 tones, where the tone distribution range is [-120:-2, 2:120]. In this case, the interval may include at least three DC tones around a center DC tone within the tone distribution range. Alternatively, the predetermined span over each 20 MHz frequency segment or frequency sub-block in the bandwidth may include a range across 243 tones, where the tone distribution range is [-121:-3, 3:121]. In this case, the interval may include at least five DC tones around a center DC tone within the tone distribution range.

[0103] In some embodiments, the interval may be dRU tone spacing (D td In this case, for each 20MHz frequency segment or frequency sub-block in the bandwidth, the interval can be expressed as n*D td , for example, n=1, 2, 3 or 4, etc.

[0104] In some embodiments, multiple subcarriers of the RU are allocated / distributed over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU. In this case (see, for example, Fig. 7A), the data and pilot subcarrier indices for the 26-tone dRU in 20 MHz bandwidth include: [-120:9:-12,6:9:114] for 26-tone dRU1, [-116:9:-8,10:9:118] for 26-tone dRU2, [-118:9:-10,8:9:116] for 26-tone dRU3, [-114:9:-6,12:9:120] for 26-tone dRU4 , [-112:9:-4,5:9:113] for 26-tone dRU5, [-119:9:-11,7:9:115] for 26-tone dRU7, [-115:9:-7,11:9:119] for 26-tone dRU8, and [-113:9:-5,4:9:112] for 26-tone dRU9. In addition, the data and pilot subcarrier indexes for the 52-tone dRU over a 20 MHz bandwidth include: 26 tones [dRU1, dRU2] for 52-tone dRU1, 26 tones [dRU3, dRU4] for 52-tone dRU2, 26 tones [dRU6, dRU7] for 52-tone dRU3, and 26 tones [dRU8, dRU9] for 52-tone dRU4. In addition, the data and pilot subcarrier indexes for the 106-tone dRU over a 20 MHz bandwidth include: 26 tones [dRU1-dRU4], [-3, 3] for 106-tone dRU1, and 26 tones [dRU6-dRU9], [-2, 2] for 106-tone dRU2.

[0105] In some embodiments, multiple subcarriers of the RU are allocated / distributed over a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU. In this case (see, for example, Figure 8), the data and pilot subcarrier indices for the 26-tone dRU in a 20 MHz bandwidth include: [-121:9:-13,5:9:113] for 26-tone dRU1, [-117:9:-9,9:9:117] for 26-tone dRU2, [-119:9:-11,7:9:115] for 26-tone dRU3, [-115:9:-7,11:9:119] for 26-tone dRU4, ...17:9:-9,9:9:117] for 26-tone dRU [-113:9:-5,13:9:121] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-116:9:-8,10:9:118] for 26-tone dRU7, [-118:9:-10,8:9:116] for 26-tone dRU8, and [-114:9:-6,12:9:120] for 26-tone dRU9. In addition, the data and pilot subcarrier indexes for a 52-tone dRU over a 20 MHz bandwidth may include: 26 tones [dRU1, dRU2] for 52-tone dRU1, 26 tones [dRU3, dRU4] for 52-tone dRU2, 26 tones [dRU6, dRU7] for 52-tone dRU3, and 26 tones [dRU8, dRU9] for 52-tone dRU4. In addition, the data and pilot subcarrier indexes for a 106-tone dRU over a 20 MHz bandwidth may include: 26 tones [dRU1-dRU4], [-4, 3] for 106-tone dRU1, and 26 tones [dRU6-dRU9], [-3, 4] for 106-tone dRU2.

[0106] In some embodiments, multiple subcarriers of the RU are allocated / distributed over a 40 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, a 106-tone dRU, or a 242-tone dRU. In this case (see, for example, Fig.13), the data and pilot subcarrier indices for a 26-tone dRU on a 40 MHz bandwidth may include: [-242:18:-26,10:18:226] for 26-tone dRU1, [-233:18:-17,19:18:235] for 26-tone dRU2, [-238:18:-22,14:18:230] for 26-tone dRU3, [-229:18:-13,23:18:234] for 26-tone dRU4, [-230:18:-23,19:18:236] for 26-tone dRU5, [-237:18:-23,19:18:237] for 26-tone dRU6, [-238:18:-23,19:18:238] for 26-tone dRU7, [-239:18:-1 :239], [-225:18:-9,27:18:243] for 26-tone dRU5, [-240:18:-24,12:18:228] for 26-tone dRU6, [-231:18:-15,21:18:237] for 26-tone dRU7, [-236:18:-20,16:18:232] for 26-tone dRU8, [-227:18:-11, 25:18:241], [-241:18:-25,11:18:227] for 26-tone dRU10, [-232:18:-16,20:18:236] for 26-tone dRU11, [-237:18:-21,15:18:231] for 26-tone dRU12, [-228:18:-12,24:18:240] for 26-tone dRU14, [- 234:18:-18,18:18:234] for 26-tone dRU15, [-239:18:-23,13:18:229] for 26-tone dRU16, [-230:18:-14,22:18:238] for 26-tone dRU17, and [-235:18:-19,17:18:233] for 26-tone dRU18. The data and pilot subcarrier indices for the 52-tone dRU at 40 MHz may include: [-242:9:-17,10:9:235] for 52-tone dRU1, [-238:9:-13,14:9:239] for 52-tone dRU2, [-240:9:-15,12:9:237] for 52-tone dRU3, [-236:9:-14,12:9:238] for 52-tone dRU4. :-11,16:9:241] for 52-tone dRU5, [-241:9:-16,11:9:236] for 52-tone dRU6, [-237:9:-12,15:9:240] for 52-tone dRU7, and [-235:9:-10,17:9:242] for 52-tone dRU8.Among them, the data and pilot subcarrier indexes of the 106-tone dRU on the 40MHz bandwidth include: 26 tones [dRU1~dRU4], [-8,5] for 106-tone dRU1, 26 tones [dRU6~dRU9], [-6,7] for 106-tone dRU2, 26 tones [dRU10~dRU13], [-7,6] for 106-tone dRU3, and 26 tones [dRU15~dRU18], [-5,8] for 106-tone dRU4. The data and pilot subcarrier indexes of the 242-tone dRU at 40 MHz include: 106-tone [dRU1-dRU2], 26-tone dRU5 and [-244, -4, 3, 9] for 242-tone dRU1, and 106-tone [dRU3-dRU4], 26-tone dRU14 and [-243, -3, 4, 244] for 242-tone dRU2.

[0107] In some embodiments, multiple subcarriers of the RU are allocated / distributed over the 80 MHz bandwidth to generate a 52-tone dRU, a 106-tone dRU, a 242-tone dRU, or a 484-tone dRU. In this case (see, for example, Fig.18), the data and pilot subcarrier indices for a 52-tone dRU on an 80 MHz bandwidth may include: [-483:36:-51,17:36:449], [-467:36:-35,33:36:465] for 52-tone dRU1, [-475:36:-43,25:36:457], [-459:36:-27,41:36:473], [-479:36:-47,21:36:453], [-463:36:-31,37:36:469] for 52-tone dRU3, [-471:36:-39,29:36:461], [-472:36:-39,29:36:462] for 52-tone dRU4. -455:36:-23,45:36:477], [-477:36:-45,23:36:455],[-461:36:-29,39:36:471], [-469:36:-37,31:36:463], [-453:36:-21,47:36:479], [-481:36:-49,19:36:451],[-465:36:-33,35:36:467] for 52 tone dRU7, [-473:36:-41,27:36:459],[-457:36:-25 ,43:36:475], [-482:36:-50,18:36:450],[-466:36:-34,34:36:466], [-474:36:-42,26:36:458],[-458:36:-26,42:36:474], [-478:36:-46,22:36:454],[-462:36:-30,38:36:470], [-470:36:-38,30:36:462],[-454:36:-22,46:36: 478], [-476:36:-44,24:36:456],[-460:36:-28,40:36:472] for 52-tone dRU13, [-468:36:-36,32:36:464],[-452:36:-20,48:36:480] for 52-tone dRU14, [-480:36:-48,20:36:452],[-464:36:-32,36:36:468] for 52-tone dRU15, and [-472:36:-40,28:36:460],[-456:36:-24,44:36:476] for 52-tone dRU16.In addition, the data and pilot subcarrier indexes for the 106-tone dRU on the 80 MHz bandwidth may include: 52 tones [dRU1-dRU2], [-495,485] for 106-tone dRU1, 52 tones [dRU3-dRU4], [-491,489] for 106-tone dRU2, 52 tones [dRU5-dRU6], [-489,491] for 106-tone dRU3, 52 tones [dRU7-dRU8], [-493,48 7] for 106-tone dRU4, 52-tone [dRU9~dRU10], [-494,486] for 106-tone dRU5, 52-tone [dRU11~dRU12], [-490,490] for 106-tone dRU6, 52-tone [dRU13~dRU14], [-488,492] for 106-tone dRU7, and 52-tone [dRU15~dRU16], [-492,488] for 106-tone dRU8. In addition, the data and pilot subcarrier indexes of the 242 tone dRU on the 80 MHz bandwidth may include: [-499:4:-19, 17:4:497] for 242 tone dRU1, [-497:4:-17, 19:4:499] for 242 tone dRU2, [-498:4:-18, 18:4:498] for 242 tone dRU3, and [-496:4:-16, 20:4:500] for 242 tone dRU4. In addition, the data and pilot subcarrier indexes of the 484 tone dRU on the 80 MHz bandwidth may include: [-499:2:-17, 17:2:499] for 484 tone dRU1, and [-498:2:-16, 18:2:500] for 484 tone dRU2.

[0108] In some embodiments, in the process of allocating multiple subcarriers of an RU on a bandwidth to generate a dRU or a dMRU, process 2600 includes: the device 2510 (e.g., the processor 2512) can generate a dMRU (e.g., 78-tone dMRU, 132-tone dMRU) by combining a first dRU of a first size and a second dRU of a second size, wherein the second size is different from the first size. In some embodiments, the dMRU may include: (i) a 78-tone dMRU constructed from one of the following: (a) one of three combinations of one 26-tone dRU and one 52-tone dRU on each 20 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth; (b) one of six combinations of one 26-tone dRU and one 52-tone dRU on each 40 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth; (c) one of eight combinations of one 26-tone dRU and one 52-tone dRU on each 80 MHz frequency segment or frequency subblock in an 80 MHz, 160 MHz, or 320 MHz bandwidth. or, (ii) a 132-tone dMRU constructed from one of the following: (a) one of two combinations of one 26-tone dRU and one 106-tone dRU on each 20 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth; (b) one of four combinations of one 26-tone dRU and one 106-tone dRU on each 40 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth; or, (c) one of four combinations of one 26-tone dRU and one 106-tone dRU on each 80 MHz frequency segment or frequency subblock in 80 MHz, 160 MHz, or 320 MHz bandwidth. In some embodiments, the dMRU can be generated by corresponding dRU subcarrier indices from a table of multiple dRUs of different sizes (e.g., any of the tables shown in the various figures of the present invention).

[0109] Additional Notes

[0110] The subject matter described herein sometimes shows different components contained in or connected with other different components.It should be understood that the architecture depicted in this way is only an example, and many other architectures can actually be implemented to achieve the same function.In a conceptual sense, any component arrangement that achieves the same function is effectively "associated" so that the desired function is achieved.Therefore, any two components combined here to achieve a specific function can be regarded as "associated" with each other so that the desired function is achieved, regardless of the architecture or intermediate components.Similarly, any two components so associated can also be regarded as "operably connected" or "operably coupled" to each other to achieve the desired function, and any two components that can be so associated can also be regarded as "operably coupled" to each other to achieve the desired function.The specific example of operable coupling includes but is not limited to physically pairable and / or physically interacting components and / or wirelessly interactive and / or wirelessly interactive components and / or logically interacting and / or logically interactive components.

[0111] Furthermore, with respect to the use of substantially any plural and / or singular terms herein, those of ordinary skill in the art may translate from the plural to the singular and / or from the singular to the plural as appropriate to the context and / or application. For clarity, various singular / plural permutations may be expressly set forth herein.

[0112] In addition, it will be understood by those skilled in the art that the terms used herein, particularly in the appended claims, such as the bodies of the appended claims, are generally intended to be "open" terms, such as the term "including" should be interpreted as "including but not limited to", the term "comprising" should be interpreted as "including but not limited to", the term "having" should be interpreted as "having at least", etc. It will be further understood by those skilled in the art that if a specific number of an introduced claim element is intended, such intent will be expressly recited in the claim, and in the absence of such a recitation, such intent is absent. For example, to aid understanding, the appended claims may include the use of the introductory phrases "at least one" and "one or more" to introduce claim elements. However, the use of such phrases should not be interpreted as implying that a claim element introduced by the indefinite article "a" or "an" limits any particular claim containing such introduced claim element to include only one such element, even when the same claim contains the introductory phrases "one or more" or "at least one" and an indefinite article such as "a" or "an", such as "a" or "an" should be interpreted as meaning "at least one" or "one or more", and the same applies to the use of definite articles used to introduce claim elements. In addition, even if a specific number of introduced claim elements is explicitly stated, one of ordinary skill in the art will recognize that such a statement should be interpreted to mean at least the number recited, such as the statement "two elements" without other modifiers, means at least two elements or two or more elements. In addition, where a phrase similar to "at least one of A, B, and C, etc." is used, for its purpose, such a structure is generally understood by one of ordinary skill in the art to be the convention, such as "a system having at least one of A, B, and C" will include but is not limited to a system having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. Where a term similar to "at least one of A, B, or C, etc." is used, such a structure is generally used for its purpose, and a person of ordinary skill in the art will understand the convention, for example, "the system has at least one of A, B, or C" will include but is not limited to the system having A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. A person of ordinary skill in the art will further understand that any transitional words and / or phrases that actually represent two or more options, whether in the specification, claims, or drawings, should be understood to include the possibility of one of the multiple terms, any of the multiple terms, or both terms. For example, the phrase "A or B" will be understood to include the possibility of "A" or "B" or "A and B".

[0113] As can be seen from the above, it can be understood that various embodiments of the present application have been described herein for illustrative purposes, and various modifications can be made without departing from the scope and spirit of the present application. Therefore, the various embodiments disclosed herein are not meant to be restrictive, and the true scope and spirit are determined by the appended claims.

[0114] The use of ordinal terms such as "first," "second," "third," etc. in the claims to modify claim elements does not in itself indicate any priority, precedence, or order of one claim element relative to another claim element, or the temporal order of performing method actions, but serves solely as a marker to distinguish one claim element with the same name from another element with the same name using ordinal terms.

[0115] Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications may be made to the present invention without departing from the spirit of the present invention and the scope defined by the scope of the claims. For example, new embodiments may be derived by combining parts of different embodiments. The described embodiments are for illustrative purposes only and are not intended to limit the present invention in all respects. The scope of protection of the present invention shall be determined by the scope of the attached claims. Those with ordinary knowledge in the art may make some changes and modifications without departing from the spirit and scope of the present invention.

Claims

1. A method for optimizing a distributed resource unit tone scheme, comprising: Allocating multiple subcarriers of a resource unit RU over a bandwidth to generate a distributed tone RU dRU or a distributed tone multi RU dMRU; as well as, Communicating with a communication entity using the dRU or the dMRU; The step of allocating the multiple subcarriers of the RU to generate the dRU or the dMRU includes: allocating the multiple subcarriers of the RU on a predetermined span on each 20 MHz frequency segment or frequency subblock in the bandwidth, wherein the predetermined span has an interval around a central direct current (DC) tone to reduce a peak-to-average power ratio (PAPR) in communication with the communication entity; Where, the interval is dRU pitch spacing D td And, for each 20MHz frequency segment or frequency sub-block in the bandwidth, the interval is expressed as n*D td , where n=1, 2, 3 or 4.

2. The method according to claim 1, characterized in that For each 20 MHz frequency segment or frequency sub-block, the predetermined span includes a span across 241 tones and the tone distribution range is [-120:-2, 2:120], wherein the interval includes at least three DC tones surrounding the central DC tone.

3. The method according to claim 1, characterized in that For each 20 MHz frequency segment or frequency sub-block, the predetermined span includes a span across 243 tones and the tone distribution range is [-121:-3,3:121], wherein the interval includes at least five DC tones surrounding the central DC tone.

4. The method according to claim 1, characterized in that The multiple subcarriers of the RU are allocated on a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indexes of the 26-tone dRU on a 20 MHz bandwidth include: [-120:9:-12,6:9:114] for 26-tone dRU1, [-116:9:-8,10:9:118] for 26-tone dRU2, [-120:9:-12,6:9:114] for 26-tone dRU3, [-120:9:-12,6:9:114] for 26-tone dRU4, [-120:9:-12,6:9:114] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-120:9:-12,6:9:114] for 26-tone dRU7, [-120:9:-12,6:9:114] for 26-tone dRU8, [-120:9:-12,6:9:114] for 26-tone dRU [-118:9:-10,8:9:116] for RU3, [-114:9:-6,12:9:120] for 26-tone dRU4, [-112:9:-4,5:9:113] for 26-tone dRU5, [-119:9:-11,7:9:115] for 26-tone dRU6, [-115:9:-7,11:9:119] for 2 [-117:9:-9,9:9:117] for 6-tone dRU8, and [-113:9:-5,4:9:112] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26 tones [dRU1, dRU2] for 52-tone dRU1, 26 tones [dRU3, dRU4] for 52-tone dRU2, 26 tones [d dRU6, dRU7] is used for 52-tone dRU3, and 26-tone [dRU8, dRU9] is used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1~dRU4], [-3,3] for 106-tone dRU1, and 26-tone [dRU6~dRU9], [-2,2] for 106-tone dRU2.

5. The method according to claim 1, characterized in that The multiple subcarriers of the RU are allocated on a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indexes of the 26-tone dRU on the 20 MHz bandwidth include: [-121:9:-13,5:9:113] for 26-tone dRU1, [-117:9:-9,9:9:117] for 26-tone dRU2, [-121:9:-13,5:9:113] for 26-tone dRU3, [-121:9:-13,5:9:113] for 26-tone dRU4, [-121:9:-13,5:9:113] for 26-tone dRU5, [-121:9:-13,5:9:113] for 26-tone dRU6, [-121:9:-13,5:9:113] for 26-tone dRU7, [-121:9:-13,5:9:113] for 26-tone dRU8, [-121:9:-13,5:9:113] for 26-tone dRU [-119:9:-11,7:9:115] for U3, [-115:9:-7,11:9:119] for 26-tone dRU4, [-113:9:-5,13:9:121] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-116:9:-8,10:9:118] for 26-tone dRU7, [-117:9:-8,10:9:119] for 26-tone dRU8 [-118:9:-10,8:9:116] for 26-tone dRU8, and [-114:9:-6,12:9:120] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1, dRU2] for 52-tone dRU1, 26-tone [dRU3, dRU4] for 52-tone dRU2, 26-tone [d dRU6, dRU7] is used for 52-tone dRU3, and 26-tone [dRU8, dRU9] is used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20 MHz bandwidth include: 26 tones [dRU1~dRU4], [-4,3] for 106-tone dRU1, and 26 tones [dRU6~dRU9], [-3,4] for 106-tone dRU2.

6. The method according to claim 1, characterized in that The plurality of subcarriers of the RU are allocated over a 40 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, a 106-tone dRU, or a 242-tone dRU, wherein data and pilot subcarrier indexes of the 26-tone dRU over the 40 MHz bandwidth include: [-242:18:-26,10:18:226] for 26-tone dRU1, [-233:18:-17,19:18:235] for 26-tone dRU2, [-238:18:-17,19:18:236] for 26-tone dRU3, [-239:18:-18,19:18:237] for 26-tone dRU4. -22,14:18:230] for 26-tone dRU4, [-229:18:-13,23:18:239] for 26-tone dRU5, [-225:18:-9,27:18:243] for 26-tone dRU6, [-240:18:-24,12:18:228] for 26-tone dRU7, [-231:18:-15,21:18:237] for 26-tone dRU8, [-236:18:-20,16:18: 232], [-227:18:-11,25:18:241] for 26-tone dRU9, [-241:18:-25,11:18:227] for 26-tone dRU10, [-232:18:-16,20:18:236] for 26-tone dRU11, [-237:18:-21,15:18:231] for 26-tone dRU12, [-228:18:-12,24:18:240] for 26-tone dRU13 , [-234:18:-18,18:18:234] for 26-tone dRU14, [-239:18:-23,13:18:229] for 26-tone dRU15, [-230:18:-14,22:18:238] for 26-tone dRU16, [-235:18:-19,17:18:233] for 26-tone dRU17, and [-226:18:-10,26:18:242] for 26-tone dRU18;The data and pilot subcarrier indices of the 52-tone dRU on the 40 MHz include: [-242:9:-17,10:9:235] for 52-tone dRU1, [-238:9:-13,14:9:239] for 52-tone dRU2, [-240:9:-15,12:9:237] for 52-tone dRU3, [-236:9:-11,12:9:238] for 52-tone dRU4. 16:9:241] for 52-tone dRU5, [-241:9:-16,11:9:236] for 52-tone dRU6, [-237:9:-12,15:9:240] for 52-tone dRU7, [-239:9:-14,13:9:238], and [-235:9:-10,17:9:242] for 52-tone dRU8; wherein, in the 40 MHz The data and pilot subcarrier indices of the 106-tone dRU on the bandwidth include: 26 tones [dRU1-dRU4], [-8,5] for 106-tone dRU1, 26 tones [dRU6-dRU9], [-6,7] for 106-tone dRU2, 26 tones [dRU10-dRU13], [-7,6] for 106-tone dRU3, and 26 tones [dRU15-dRU18], [-5, 8] for 106-tone dRU4; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 40 MHz include: 106-tone [dRU1-dRU2], 26-tone dRU5 and [-244,-4,3,9] for 242-tone dRU1, and 106-tone [dRU3-dRU4], 26-tone dRU14 and [-243,-3,4,244] for 242-tone dRU2. ; 7. The method according to claim 1, characterized in that The plurality of subcarriers of the RU are allocated over an 80 MHz bandwidth to generate a 52-tone dRU, a 106-tone dRU, a 242-tone dRU, or a 484-tone dRU, wherein data and pilot subcarrier indices of the 52-tone dRU over the 80 MHz bandwidth include: [-483:36:-51,17:36:449], [-467:36:-35,33:36:465] for 52-tone dRU1, [-475:36:-43,25:36:457], [-459:36:-27,41:36:473] for 52-tone dRU2, [-479:36:-47,21:36:4 53],[-463:36:-31,37:36:469],[-471:36:-39,29:36:461],[-455:36:-23,45:36:477],[-477:36:-45,23:36:455],[-461:36:-29,39:36:471],[-469:36:-37,31:36:463],[-453:36:-21,47:36:479],[-481:36:-49,19:36:451],[-46 5:36:-33,35:36:467], [-473:36:-41,27:36:459],[-457:36:-25,43:36:475] for 52-tone dRU8, [-482:36:-50,18:36:450],[-466:36:-34,34:36:466] for 52-tone dRU9, [-474:36:-42,26:36:458],[-458:36:-26,42:36:474] for 52-tone dRU11, [-478:36:-46,22:36:454],[-462:36: -30,38:36:470], [-470:36:-38,30:36:462],[-454:36:-22,46:36:478] for 52-tone dRU12, [-476:36:-44,24:36:456],[-460:36:-28,40:36:472] for 52-tone dRU14, [-468:36:-36,32:36:464],[-452:36:-20,48:36:480] for 52-tone dRU1536:36:468], and [-472:36:-40,28:36:460],[-456:36:-24,44:36:476] for 52-tone dRU16; wherein the data and pilot subcarrier indexes of the 106-tone dRU on the 80 MHz bandwidth include: 52-tone [dRU1-dRU2], [-495,485] for 106-tone dRU1, 52-tone [dRU3-dRU4], [-491,489] for For 106-tone dRU2, 52-tone [dRU5-dRU6], [-489,491] for 106-tone dRU3, 52-tone [dRU7-dRU8], [-493,487] for 106-tone dRU4, 52-tone [dRU9-dRU10], [-494,486] for 106-tone dRU5, 52-tone [dRU11-dRU12], [-490,490] for 106-tone dRU6, 52-tone [dRU1 3~dRU14], [-488,492] for 106-tone dRU7, and 52-tone [dRU15~dRU16], [-492,488] for 106-tone dRU8; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 80 MHz bandwidth include: [-499:4:-19,17:4:497] for 242-tone dRU1, [-497:4:-17,19:4:499] for 242-tone dRU2 , [-498:4:-18,18:4:498] for 242-tone dRU3, and [-496:4:-16,20:4:500] for 242-tone dRU4; wherein the data and pilot subcarrier indexes of the 484-tone dRU on the 80 MHz bandwidth include: [-499:2:-17,17:2:499] for 484-tone dRU1, and [-498:2:-16,18:2:500] for 484-tone dRU2. , 8. The method according to claim 1, characterized in that Allocating a plurality of subcarriers of the RU over the bandwidth to generate a dRU or a dMRU further includes generating the dMRU by combining a first dRU of a first size and a second dRU of a second size, the second size being different from the first size.

9. The method according to claim 8, characterized in that The dMRU includes a 78-tone dMRU and / or a 132-tone dMRU, wherein the 78-tone dM·2RU is constructed by one of the following: One of three combinations of one 26-tone DRU and one 52-tone DRU on each 20 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of six combinations of one 26-tone DRU and one 52-tone DRU on each 40 MHz frequency segment or frequency sub-block in an 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of eight combinations of one 26-tone dRU and one 52-tone dRU on each 80 MHz frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; The 132-tone dMRU is constructed by one of the following: One of two combinations of one 26-tone dRU and one 106-tone dRU on each 20 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of four combinations of one 26-tone dRU and one 106-tone dRU on each 40 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of four combinations of one 26-tone dRU and one 106-tone dRU on each 80 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth.

10. The method according to claim 8, characterized in that The dMRU is generated by a corresponding dRU subcarrier index from a table of multiple dRUs of different sizes.

11. An apparatus for optimizing a distributed resource unit tone scheme, comprising: a transceiver configured to transmit and receive wirelessly; as well as A processor is coupled to the transceiver and configured to perform the following operations: Allocating multiple subcarriers of a resource unit RU over a bandwidth to generate a distributed tone RU dRU or a distributed tone multi RU dMRU; and, Communicating with a communication entity using the dRU or the dMRU; Wherein, in the process of allocating multiple subcarriers of the RU to generate the dRU or the dMRU, the processor is configured to: allocate multiple subcarriers of the RU on a predetermined span on each 20 MHz frequency segment or frequency subblock in the bandwidth, wherein the predetermined span has an interval around a central direct current (DC) tone to reduce a peak-to-average power ratio (PAPR) in communication with the communication entity; Where, the interval is dRU pitch spacing D td And, for each 20MHz frequency segment or frequency sub-block in the bandwidth, the interval is expressed as n*D td , where n=1, 2, 3 or 4.

12. The device according to claim 11, characterized in that For each 20 MHz frequency segment or frequency sub-block, the predetermined span includes a span across 241 tones and the tone distribution range is [-120:-2, 2:120], wherein the interval includes at least three DC tones surrounding the central DC tone.

13. The device according to claim 11, characterized in that For each 20 MHz frequency segment or frequency sub-block, the predetermined span includes a span across 243 tones and the tone distribution range is [-121:-3,3:121], wherein the interval includes at least five DC tones surrounding the central DC tone.

14. The device according to claim 11, characterized in that The multiple subcarriers of the RU are allocated on a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indexes of the 26-tone dRU on a 20 MHz bandwidth include: [-120:9:-12,6:9:114] for 26-tone dRU1, [-116:9:-8,10:9:118] for 26-tone dRU2, [-120:9:-12,6:9:114] for 26-tone dRU3, [-120:9:-12,6:9:114] for 26-tone dRU4, [-120:9:-12,6:9:114] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-120:9:-12,6:9:114] for 26-tone dRU7, [-120:9:-12,6:9:114] for 26-tone dRU8, [-120:9:-12,6:9:114] for 26-tone dRU [-118:9:-10,8:9:116] for RU3, [-114:9:-6,12:9:120] for 26-tone dRU4, [-112:9:-4,5:9:113] for 26-tone dRU5, [-119:9:-11,7:9:115] for 26-tone dRU6, [-115:9:-7,11:9:119] for 2 [-117:9:-9,9:9:117] for 6-tone dRU8, and [-113:9:-5,4:9:112] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26 tones [dRU1, dRU2] for 52-tone dRU1, 26 tones [dRU3, dRU4] for 52-tone dRU2, 26 tones [d dRU6, dRU7] is used for 52-tone dRU3, and 26-tone [dRU8, dRU9] is used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1~dRU4], [-3,3] for 106-tone dRU1, and 26-tone [dRU6~dRU9], [-2,2] for 106-tone dRU2.

15. The device according to claim 11, characterized in that The multiple subcarriers of the RU are allocated on a 20 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, or a 106-tone dRU, wherein the data and pilot subcarrier indexes of the 26-tone dRU on the 20 MHz bandwidth include: [-121:9:-13,5:9:113] for 26-tone dRU1, [-117:9:-9,9:9:117] for 26-tone dRU2, [-121:9:-13,5:9:113] for 26-tone dRU3, [-121:9:-13,5:9:113] for 26-tone dRU4, [-121:9:-13,5:9:113] for 26-tone dRU5, [-121:9:-13,5:9:113] for 26-tone dRU6, [-121:9:-13,5:9:113] for 26-tone dRU7, [-121:9:-13,5:9:113] for 26-tone dRU8, [-121:9:-13,5:9:113] for 26-tone dRU [-119:9:-11,7:9:115] for U3, [-115:9:-7,11:9:119] for 26-tone dRU4, [-113:9:-5,13:9:121] for 26-tone dRU5, [-120:9:-12,6:9:114] for 26-tone dRU6, [-116:9:-8,10:9:118] for 26-tone dRU7, [-117:9:-8,10:9:119] for 26-tone dRU8 [-118:9:-10,8:9:116] for 26-tone dRU8, and [-114:9:-6,12:9:120] for 26-tone dRU9; wherein the data and pilot subcarrier indexes of the 52-tone dRU on the 20 MHz bandwidth include: 26-tone [dRU1, dRU2] for 52-tone dRU1, 26-tone [dRU3, dRU4] for 52-tone dRU2, 26-tone [d dRU6, dRU7] is used for 52-tone dRU3, and 26-tone [dRU8, dRU9] is used for 52-tone dRU4; and the data and pilot subcarrier indexes of the 106-tone dRU on the 20 MHz bandwidth include: 26 tones [dRU1~dRU4], [-4,3] for 106-tone dRU1, and 26 tones [dRU6~dRU9], [-3,4] for 106-tone dRU2.

16. The device according to claim 11, characterized in that The plurality of subcarriers of the RU are allocated over a 40 MHz bandwidth to generate a 26-tone dRU, a 52-tone dRU, a 106-tone dRU, or a 242-tone dRU, wherein data and pilot subcarrier indexes of the 26-tone dRU over the 40 MHz bandwidth include: [-242:18:-26,10:18:226] for 26-tone dRU1, [-233:18:-17,19:18:235] for 26-tone dRU2, [-238:18:-17,19:18:236] for 26-tone dRU3, [-239:18:-18,19:18:237] for 26-tone dRU4. -22,14:18:230] for 26-tone dRU4, [-229:18:-13,23:18:239] for 26-tone dRU5, [-225:18:-9,27:18:243] for 26-tone dRU6, [-240:18:-24,12:18:228] for 26-tone dRU7, [-231:18:-15,21:18:237] for 26-tone dRU8, [-236:18:-20,16:18: 232], [-227:18:-11,25:18:241] for 26-tone dRU9, [-241:18:-25,11:18:227] for 26-tone dRU10, [-232:18:-16,20:18:236] for 26-tone dRU11, [-237:18:-21,15:18:231] for 26-tone dRU12, [-228:18:-12,24:18:240] for 26-tone dRU13 , [-234:18:-18,18:18:234] for 26-tone dRU14, [-239:18:-23,13:18:229] for 26-tone dRU15, [-230:18:-14,22:18:238] for 26-tone dRU16, [-235:18:-19,17:18:233] for 26-tone dRU17, and [-226:18:-10,26:18:242] for 26-tone dRU18;The data and pilot subcarrier indices of the 52-tone dRU on the 40 MHz include: [-242:9:-17,10:9:235] for 52-tone dRU1, [-238:9:-13,14:9:239] for 52-tone dRU2, [-240:9:-15,12:9:237] for 52-tone dRU3, [-236:9:-11,12:9:238] for 52-tone dRU4. 16:9:241] for 52-tone dRU5, [-241:9:-16,11:9:236] for 52-tone dRU6, [-237:9:-12,15:9:240] for 52-tone dRU7, [-239:9:-14,13:9:238], and [-235:9:-10,17:9:242] for 52-tone dRU8; wherein, in the 40 MHz The data and pilot subcarrier indices of the 106-tone dRU on the bandwidth include: 26 tones [dRU1-dRU4], [-8,5] for 106-tone dRU1, 26 tones [dRU6-dRU9], [-6,7] for 106-tone dRU2, 26 tones [dRU10-dRU13], [-7,6] for 106-tone dRU3, and 26 tones [dRU15-dRU18], [-5, 8] for 106-tone dRU4; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 40 MHz include: 106-tone [dRU1-dRU2], 26-tone dRU5 and [-244,-4,3,9] for 242-tone dRU1, and 106-tone [dRU3-dRU4], 26-tone dRU14 and [-243,-3,4,244] for 242-tone dRU2. ; 17. The device according to claim 11, characterized in that The plurality of subcarriers of the RU are allocated over an 80 MHz bandwidth to generate a 52-tone dRU, a 106-tone dRU, a 242-tone dRU, or a 484-tone dRU, wherein data and pilot subcarrier indices of the 52-tone dRU over the 80 MHz bandwidth include: [-483:36:-51,17:36:449], [-467:36:-35,33:36:465] for 52-tone dRU1, [-475:36:-43,25:36:457], [-459:36:-27,41:36:473] for 52-tone dRU2, [-479:36:-47,21:36:4 53],[-463:36:-31,37:36:469],[-471:36:-39,29:36:461],[-455:36:-23,45:36:477],[-477:36:-45,23:36:455],[-461:36:-29,39:36:471],[-469:36:-37,31:36:463],[-453:36:-21,47:36:479],[-481:36:-49,19:36:451],[-46 5:36:-33,35:36:467], [-473:36:-41,27:36:459],[-457:36:-25,43:36:475] for 52-tone dRU8, [-482:36:-50,18:36:450],[-466:36:-34,34:36:466] for 52-tone dRU9, [-474:36:-42,26:36:458],[-458:36:-26,42:36:474] for 52-tone dRU11, [-478:36:-46,22:36:454],[-462:36: -30,38:36:470], [-470:36:-38,30:36:462],[-454:36:-22,46:36:478] for 52-tone dRU12, [-476:36:-44,24:36:456],[-460:36:-28,40:36:472] for 52-tone dRU14, [-468:36:-36,32:36:464],[-452:36:-20,48:36:480] for 52-tone dRU1536:36:468], and [-472:36:-40,28:36:460],[-456:36:-24,44:36:476] for 52-tone dRU16; wherein the data and pilot subcarrier indexes of the 106-tone dRU on the 80 MHz bandwidth include: 52-tone [dRU1-dRU2], [-495,485] for 106-tone dRU1, 52-tone [dRU3-dRU4], [-491,489] for For 106-tone dRU2, 52-tone [dRU5-dRU6], [-489,491] for 106-tone dRU3, 52-tone [dRU7-dRU8], [-493,487] for 106-tone dRU4, 52-tone [dRU9-dRU10], [-494,486] for 106-tone dRU5, 52-tone [dRU11-dRU12], [-490,490] for 106-tone dRU6, 52-tone [dRU1 3~dRU14], [-488,492] for 106-tone dRU7, and 52-tone [dRU15~dRU16], [-492,488] for 106-tone dRU8; wherein the data and pilot subcarrier indexes of the 242-tone dRU on the 80 MHz bandwidth include: [-499:4:-19,17:4:497] for 242-tone dRU1, [-497:4:-17,19:4:499] for 242-tone dRU2 , [-498:4:-18,18:4:498] for 242-tone dRU3, and [-496:4:-16,20:4:500] for 242-tone dRU4; wherein the data and pilot subcarrier indexes of the 484-tone dRU on the 80 MHz bandwidth include: [-499:2:-17,17:2:499] for 484-tone dRU1, and [-498:2:-16,18:2:500] for 484-tone dRU2. , 18. The device according to claim 11, characterized in that In allocating a plurality of subcarriers of the RU over the bandwidth to generate a dRU or a dMRU, the processor is further configured to generate the dMRU by combining a first dRU of a first size and a second dRU of a second size, the second size being different from the first size, and the dMRU comprising a 78-tone dMRU or a 132-tone dMRU, wherein the 78-tone dMRU is constructed by one of: One of three combinations of one 26-tone DRU and one 52-tone DRU on each 20 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of six combinations of one 26-tone DRU and one 52-tone DRU on each 40 MHz frequency segment or frequency sub-block in an 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of eight combinations of one 26-tone dRU and one 52-tone dRU on each 80 MHz frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; The 132-tone dMRU is constructed by one of the following: One of two combinations of one 26-tone dRU and one 106-tone dRU on each 20 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of four combinations of one 26-tone dRU and one 106-tone dRU on each 40 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz, or 320 MHz bandwidth; or One of four combinations of one 26-tone dRU and one 106-tone dRU on each 80 MHz frequency segment or frequency sub-block in 80 MHz, 160 MHz or 320 MHz bandwidth.

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