Communication method and apparatus

Abstract

A communication method and apparatus, relating to the technical field of communications, and capable of providing DRUs distributed uniformly on a bandwidth to reduce the average value of the peak-to-average power ratio of data, thereby avoiding nonlinear distortion as much as possible, and thus improving the power amplification efficiency. The method comprises: performing communication by means of a first resource unit, wherein the first resource unit comprises 242 subcarriers, for the first subcarrier to an m-th subcarrier arranged in a frequency domain order among the 242 subcarriers, the absolute value of a difference between indexes of adjacent subcarriers is n, for an (m+1)-th subcarrier to a 242nd subcarrier arranged in the frequency domain order among the 242 subcarriers, the absolute value of a difference between indexes of adjacent subcarriers is n, for the m-th subcarrier and the (m+1)-th subcarrier arranged in the frequency domain order among the 242 subcarriers, the absolute value of a difference between indexes of the m-th subcarrier and the (m+1)-th subcarrier is a positive integer multiple of n, and n is a positive integer greater than 1.

Description

Communication method and apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202411306358.7, filed on September 14, 2024, entitled "Communication method and apparatus", and the Chinese Patent Application No. 202411736171.0, filed on November 27, 2024, entitled "Communication method and apparatus", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a communication method and apparatus. BACKGROUND

[0003] In a communication system, communication devices can communicate with each other through distributed resource units (DRUs). Generally, subcarriers of each DRU can be dispersed across the entire bandwidth to obtain a higher power amplification factor.

[0004] However, the existing DRUs are not evenly distributed across the bandwidth, which can cause the average value of the peak to average power ratio (PAPR) of data to be too large, easily causing nonlinear distortion and reducing power amplifier efficiency. SUMMARY

[0005] The present application provides a communication method and apparatus, which can provide DRUs that are evenly distributed across the bandwidth, reduce the average value of the peak to average power ratio of data, and avoid nonlinear distortion as much as possible to improve power amplifier efficiency.

[0006] In a first aspect, the present application provides a communication method, which can be executed by a first communication device. In the absence of special description, the "first communication device" in the present application can refer to the first communication device itself, a component (such as a processor, a chip, or a chip system, etc.) in the first communication device, or a logic module or software capable of realizing all or part of the functions of the first communication device. The method comprises: communicating through a first resource unit; wherein the first resource unit comprises 242 subcarriers; in the 1st to mth subcarriers arranged in the frequency domain order among the 242 subcarriers, the absolute value of the difference between the indices of adjacent subcarriers is n, n is a positive integer greater than 1; in the m+1th to 242th subcarriers arranged in the frequency domain order among the 242 subcarriers, the absolute value of the difference between the indices of adjacent subcarriers is n; the absolute value of the difference between the indices of the mth and m+1th subcarriers arranged in the frequency domain order among the 242 subcarriers is a positive integer multiple of n.

[0007] According to the first aspect, the 242 subcarriers included in the first resource unit are discontinuous and can be distributed over a larger bandwidth, and the first resource unit has a spacing of n or a positive integer multiple of n between adjacent subcarriers, so that the greatest common divisor of the spacing between adjacent subcarriers of the first resource unit is n. Since n is a positive integer greater than 1, the distribution of the subcarriers of the first resource unit over the bandwidth is more uniform (approximately uniform distribution), and when the first resource unit is used for data transmission, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and power amplifier efficiency can be improved.

[0008] In a possible design, the index of the mth subcarrier is less than the index of the direct current subcarrier, and the index of the m+1th subcarrier is greater than the index of the direct current subcarrier.

[0009] Based on the possible design, the 1st to mth subcarriers of the first resource unit are located on the left side of the direct current subcarrier, and the m+1th to 242nd subcarriers are located on the right side of the direct current subcarrier.

[0010] In a possible design, m is 162.

[0011] In a possible design, n is 3.

[0012] In a possible design, the positive integer multiple of n is 27, or the positive integer multiple of n is 267.

[0013] Based on the above two possible designs, the greatest common divisor of the spacing between adjacent subcarriers of the first resource unit is 3, which can make the distribution of the subcarriers of the first resource unit over the bandwidth more uniform (approximately uniform distribution), and when the first resource unit is used for data transmission, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and power amplifier efficiency can be improved.

[0014] In a possible design, when the transmission bandwidth is 80 MHz and a 20 MHz preamble of the 80 MHz is punctured, the 80 MHz includes three first resource units, and the xth subcarrier of the three first resource units is continuous; x=1, 2, …, 242.

[0015] Based on the possible design, in order to ensure that each first resource unit can cover a larger bandwidth, when 3 first resource units (first resource unit 1, first resource unit 2, first resource unit 3) of 80MHz are determined, 782 subcarriers can be divided into three equal parts, in order to simplify the structure of the design, the first resource unit 2 is the first resource unit 1 rightwardly shifted by 1 subcarrier spacing, and the first resource unit 3 is the first resource unit 1 rightwardly shifted by 2 subcarrier spacings, that is, the first resource unit 2 = the first resource unit 1 + 1, and the first resource unit 3 = the first resource unit 1 + 2. That is, the xth subcarrier of the 3 first resource units is continuous.

[0016] In a possible design, in the case of preamble puncturing of the fourth 20MHz of 80MHz, the positive integer multiple of n is 27.

[0017] In a possible design, the first resource unit includes subcarriers with indexes of [-496:3:-13, 14:3:251]; or, the first resource unit includes subcarriers with indexes of [-495:3:-12, 15:3:252]; or, the first resource unit includes subcarriers with indexes of [-494:3:-11, 16:3:253].

[0018] In a possible design, in the case of preamble puncturing of the third 20MHz of 80MHz, the positive integer multiple of n is 267.

[0019] In a possible design, the first resource unit includes subcarriers with indexes of [-496:3:-13, 254:3:491]; or, the first resource unit includes subcarriers with indexes of [-495:3:-12, 255:3:492]; or, the first resource unit includes subcarriers with indexes of [-494:3:-11, 256:3:493].

[0020] In a possible design, in the case of preamble puncturing of the second 20MHz of 80MHz, the positive integer multiple of n is 267.

[0021] In a possible design, the first resource unit includes subcarriers with indexes of [-493:3:-256, 11:3:494]; or, the first resource unit includes subcarriers with indexes of [-492:3:-255, 12:3:495]; or, the first resource unit includes subcarriers with indexes of [-491:3:-254, 13:3:496].

[0022] In a possible design, in the case of preamble puncturing of the first 20MHz of 80MHz, the positive integer multiple of n is 27.

[0023] In a possible design, the first resource unit includes subcarriers with indexes of [-253:3:-16, 11:3:494]; or, the first resource unit includes subcarriers with indexes of [-252:3:-15, 12:3:495]; or, the first resource unit includes subcarriers with indexes of [-251:3:-14, 13:3:496].

[0024] Based on the above eight possible designs, for the case of the preamble puncturing of each 20MHz of 80MHz, multiple feasible schemes are provided for the indexes of subcarriers included in the first resource unit.

[0025] In a possible design, in the first resource unit in the case of the preamble puncturing of the fourth 20MHz of 80MHz, the indexes of subcarriers with indexes less than 12 are equal to the indexes of subcarriers of the first resource unit in the case of the preamble puncturing of the third 20MHz of 80MHz; and the indexes of subcarriers with indexes greater than or equal to 12 are equal to the indexes of subcarriers of the first resource unit in the case of the preamble puncturing of the third 20MHz of 80MHz plus 240.

[0026] In a possible design, in the first resource unit in the case of the preamble puncturing of the fourth 20MHz of 80MHz, the indexes with values greater than -12 in the opposite number are equal to the indexes of subcarriers of the first resource unit in the case of the preamble puncturing of the second 20MHz of 80MHz; and the indexes with values less than or equal to -12 in the opposite number are equal to the indexes of subcarriers of the first resource unit in the case of the preamble puncturing of the second 20MHz of 80MHz minus 240.

[0027] In a possible design, in the first resource unit in the case of the preamble puncturing of the fourth 20MHz of 80MHz, the indexes in the opposite number are equal to the indexes of subcarriers of the first resource unit in the case of the preamble puncturing of the first 20MHz of 80MHz.

[0028] Based on the above three possible designs, 3 first resource units in the case of the preamble puncturing of other 20MHz of 80MHz can also be determined according to 3 first resource units in the case of the preamble puncturing of the fourth 20MHz of 80MHz. That is, for the same type of first resource unit, which has the same structure, i.e., the same size of first resource unit, another first resource unit can be used to obtain the same type of first resource unit through translation, inversion or taking the opposite number, thereby simplifying the complexity of implementation and facilitating the design of channel estimation sequences.

[0029] In a possible design, when the transmission bandwidth is 80 MHz and one 20 MHz preamble is punctured from the 80 MHz, the 80 MHz includes 3 first resource units, and each third resource unit includes 8 pilot subcarriers; and the absolute value of the difference between the indexes of any two pilot subcarriers in the xth pilot subcarrier of the 3 first resource units is a positive integer multiple of 11, where x=1, 2,..., 8.

[0030] In a possible design, the indexes of the pilot subcarriers included in the first resource unit are: {-373, -307, -241, -175, -109, 71, 137, 203}; or the indexes of the pilot subcarriers included in the first resource unit are: {-384, -318, -252, -186, -120, 60, 126, 192}; or the indexes of the pilot subcarriers included in the first resource unit are: {-395, -329, -263, -197, -131, 49, 115, 181}.

[0031] Based on the above two possible designs, the indexes of the pilot subcarriers of any first resource unit can be shifted (for example, shifted by a positive integer multiple of 11 subcarriers) to obtain the indexes of the pilot subcarriers of any other first resource unit, thereby reducing the complexity of frequency domain channel smoothing processing.

[0032] In a second aspect, a communication method is provided. The method can be performed by a first communication device. In the case where no special description is given, the first communication device in the present application can refer to the first communication device itself, a component (for example, a processor, a chip, or a chip system) in the first communication device, or a logic module or software capable of realizing all or part of the functions of the first communication device. The method includes: performing communication through a second resource unit; wherein the second resource unit includes 26 subcarriers; the absolute value of the difference between the indexes of adjacent subcarriers in the 1st to the i-th subcarriers arranged in frequency domain order is j; j is a positive integer greater than 1; the absolute value of the difference between the indexes of adjacent subcarriers in the i+1th to the 26th subcarriers arranged in frequency domain order is j; and the absolute value of the difference between the indexes of the i-th and the i+1th subcarriers arranged in frequency domain order is a positive integer multiple of j.

[0033] According to the second aspect, the 26 subcarriers included in the second resource unit are discontinuous and can be distributed on a larger bandwidth, and the transmission power is improved. In the second resource unit, the interval between adjacent subcarriers is j or an integer multiple of j, and the greatest common divisor of the interval between adjacent subcarriers in the second resource unit is j. Since j is a positive integer greater than 1, the distribution of the subcarriers in the second resource unit on the bandwidth is more uniform (approximately uniform distribution). When the second resource unit is used for data transmission, the average value of the PAPR of the data can be reduced, nonlinear distortion can be avoided as much as possible, and the power amplifier efficiency is improved.

[0034] In a possible design, the index of the ith subcarrier is less than the index of the direct current subcarrier; and the index of the (i+1)th subcarrier is greater than the index of the direct current subcarrier.

[0035] According to the possible design, the 1st to ith subcarriers of the second resource unit are located on the left side of the direct current subcarrier, and the (i+1)th to 26th subcarriers are located on the right side of the direct current subcarrier.

[0036] In a possible design, the value of i is 18; or the value of i is 17.

[0037] In a possible design, the value of j is 27.

[0038] In a possible design, the integer multiple of j is 54.

[0039] According to the above two possible designs, the greatest common divisor of the interval between adjacent subcarriers in the second resource unit is 27, which can make the distribution of the subcarriers in the second resource unit on the bandwidth more uniform (approximately uniform distribution). When the second resource unit is used for data transmission, the average value of the PAPR of the data can be reduced, nonlinear distortion can be avoided as much as possible, and the power amplifier efficiency is improved.

[0040] In a possible design, when the transmission bandwidth is 80 MHz and one 20 MHz preamble of the 80 MHz is punctured, each 20 MHz of the 80 MHz includes 9 second resource units. In the subcarriers with an index less than the index of the direct current subcarrier, the absolute value of the difference between the indexes of adjacent subcarriers is 3. In the subcarriers with an index greater than the index of the direct current subcarrier, the absolute value of the difference between the indexes of adjacent subcarriers is 3. In the subcarriers of the 9 second resource units, the absolute value of the difference between the indexes of the two subcarriers adjacent to the direct current subcarrier is 30.

[0041] Based on the possible design, in order to ensure that each second resource unit can cover a larger bandwidth, when 9 second resource units of 80MHz are determined, 782 subcarriers can be equally divided by 9, and in order to simplify the structure of the design, each second resource unit can be determined by means of translation (for example, translation of 3 subcarriers).

[0042] In a possible design, in the case of the fourth 20MHz preamble puncturing of 80MHz, the second resource unit includes subcarriers with indexes [-487:27:-28, 26:27:215]; or the second resource unit includes subcarriers with indexes [-472:27:-13, 41:27:230]; or the second resource unit includes subcarriers with indexes [-481:27:-22, 32:27:221]; or the second resource unit includes subcarriers with indexes [-466:27:-34, 20:27:236]; or the second resource unit includes subcarriers with indexes [-475:27:-16, 38:27:227]; or the second resource unit includes subcarriers with indexes [-484:27:-25, 29:27:218]; or the second resource unit includes subcarriers with indexes [-469:27:-37, 17:27:233]; or the second resource unit includes subcarriers with indexes [-478:27:-19, 35:27:224]; or the second resource unit includes subcarriers with indexes [-463:27:-31, 23:27:239].

[0043] In a possible design, in the case of the fourth 20 MHz preamble puncturing, the second resource unit includes subcarriers with indices of [-486:27:-27, 27:27:216], or [-471:27:-12, 42:27:231], or [-480:27:-21, 33:27:222], or [-465:27:-33, 21:27:237], or [-474:27:-15, 39:27:228], or [-483:27:-24, 30:27:219], or [-468:27:-36, 18:27:234], or [-477:27:-18, 36:27:225], or [-462:27:-30, 24:27:240].

[0044] In a possible design, in the case of the fourth 20 MHz preamble puncturing, the second resource unit includes subcarriers with indices of [-485:27:-26, 28:27:217], or [-470:27:-11, 43:27:232], or [-479:27:-20, 34:27:223], or [-464:27:-32, 22:27:238], or [-473:27:-14, 40:27:229], or [-482:27:-23, 31:27:220], or [-467:27:-35, 19:27:235], or [-476:27:-17, 37:27:226], or [-461:27:-29, 25:27:241].

[0045] In a possible design, in the case of the third 20 MHz preamble puncturing, the second resource unit includes subcarriers with indices of [-487:27:-28, 266:27:455], or [-472:27:-13, 281:27:470], or [-481:27:-22, 272:27:461], or [-466:27:-34, 260:27:476], or [-475:27:-16, 278:27:467], or [-484:27:-25, 269:27:458], or [-469:27:-37, 257:27:473], or [-478:27:-19, 275:27:464], or [-463:27:-31, 263:27:479].

[0046] In a possible design, in the case of the third 20 MHz preamble puncturing, the second resource unit includes subcarriers with indices of [-486:27:-27, 267:27:456], or [-471:27:-12, 282:27:471], or [-480:27:-21, 273:27:462], or [-465:27:-33, 261:27:477], or [-474:27:-15, 279:27:468], or [-483:27:-24, 270:27:459], or [-468:27:-36, 258:27:474], or [-477:27:-18, 276:27:465], or [-462:27:-30, 264:27:480].

[0047] In a possible design, in the case of the third 20MHz preamble puncturing of the 80MHz, the second resource unit includes subcarriers with indexes of [-485:27:-26, 268:27:457], or [-470:27:-11, 283:27:472], or [-479:27:-20, 274:27:463], or [-464:27:-32, 262:27:478], or [-473:27:-14, 280:27:469], or [-482:27:-23, 271:27:460], or [-467:27:-35, 259:27:475], or [-476:27:-17, 277:27:466], or [-461:27:-29, 265:27:481].

[0048] In a possible design, in the case of the second 20MHz preamble puncturing of the 80MHz, the second resource unit includes subcarriers with indexes of [-484:27:239, 269:27:458], or [-469:27:254, 284:27:473], or [-478:27:245, 275:27:464], or [-463:27:233, 263:27:479], or [-472:27:251, 281:27:470], or [-481:27:242, 272:27:461], or [-466:27:230, 260:27:476], or [-475:27:248, 278:27:467], or [-460:27:236, 266:27:482].

[0049] In a possible design, in the case of the preamble puncturing of the second 20MHz of the 80MHz, the second resource unit includes subcarriers with indices of [-483:27:240, 270:27:459], or [-468:27:255, 285:27:474], or [-477:27:246, 276:27:465], or [-462:27:234, 264:27:480], or [-471:27:252, 282:27:471], or [-480:27:243, 273:27:462], or [-465:27:231, 261:27:477], or [-474:27:249, 279:27:468], or [-459:27:237, 267:27:483].

[0050] In a possible design, in the case of the preamble puncturing of the second 20MHz of the 80MHz, the second resource unit includes subcarriers with indices of [-482:27:241, 271:27:460], or [-467:27:256, 286:27:475], or [-476:27:247, 277:27:466], or [-461:27:235, 265:27:481], or [-470:27:253, 283:27:472], or [-479:27:244, 274:27:463], or [-464:27:232, 262:27:478], or [-473:27:250, 280:27:469], or [-458:27:238, 268:27:484].

[0051] In a possible design, in the case of the preamble puncturing in the first 20 MHz of the 80 MHz, the second resource unit includes subcarriers with indices [-244:27:239, 269:27:458], or [-229:27:254, 284:27:473], or [-238:27:245, 275:27:464], or [-223:27:233, 263:27:479], or [-232:27:251, 281:27:470], or [-241:27:242, 272:27:461], or [-226:27:230, 260:27:476], or [-235:27:248, 278:27:467], or [-220:27:236, 266:27:482].

[0052] In a possible design, in the case of the preamble puncturing in the first 20 MHz of the 80 MHz, the second resource unit includes subcarriers with indices [-243:27:240, 270:27:459], or [-228:27:255, 285:27:474], or [-237:27:246, 276:27:465], or [-222:27:234, 264:27:480], or [-231:27:252, 282:27:471], or [-240:27:243, 273:27:462], or [-225:27:231, 261:27:477], or [-234:27:249, 279:27:468], or [-219:27:237, 267:27:483].

[0053] In a possible design, in the case of the preamble puncturing of the first 20MHz of the 80MHz, the second resource unit includes subcarriers with indexes of [-242:27:241, 271:27:460], or [-227:27:256, 286:27:475], or [-236:27:247, 277:27:466], or [-221:27:235, 265:27:481], or [-230:27:253, 283:27:472], or [-239:27:244, 274:27:463], or [-224:27:232, 262:27:478], or [-233:27:250, 280:27:469], or [-218:27:238, 268:27:484].

[0054] Based on the above twelve possible designs, for the preamble puncturing of each 20MHz of the 80MHz, multiple feasible schemes are provided for the indexes of the subcarriers included in the second resource unit.

[0055] In one possible design, in the case of the fourth 20 MHz preamble puncturing of the 80 MHz, the sum of the index of the 26 subcarriers of the first second resource unit and 15 is equal to the index of the subcarriers of the second second resource unit; or, the sum of the index of the 26 subcarriers of the first second resource unit and 6 is equal to the index of the subcarriers of the third second resource unit; or, the sum of the index of the 1st to (i-1)th subcarriers of the first second resource unit and 21 is equal to the index of the 1st to (i-1)th subcarriers of the fourth second resource unit; the sum of the index of the (i+1)th to 26th subcarriers of the first second resource unit and 21 is equal to the index of the (i+1)th to 26th subcarriers of the fourth second resource unit; the index of the (i+1)th subcarrier of the fourth second resource unit minus 27 is equal to the index of the ith subcarrier of the fourth second resource unit; or, the sum of the index of the 26 subcarriers of the first second resource unit and 12 is equal to the index of the subcarriers of the fifth second resource unit; or, the sum of the index of the 26 subcarriers of the first second resource unit and 3 is equal to the index of the subcarriers of the sixth second resource unit; or, the sum of the index of the 1st to (i-1)th subcarriers of the first second resource unit and 18 is equal to the index of the 1st to (i-1)th subcarriers of the seventh second resource unit; the sum of the index of the (i+1)th to 26th subcarriers of the first second resource unit and 18 is equal to the index of the (i+1)th to 26th subcarriers of the seventh second resource unit; the index of the (i+1)th subcarrier of the seventh second resource unit minus 27 is equal to the index of the ith subcarrier of the seventh second resource unit; or, the sum of the index of the 26 subcarriers of the first second resource unit and 9 is equal to the index of the subcarriers of the eighth second resource unit; or, the sum of the index of the 1st to (i-1)th subcarriers of the first second resource unit and 24 is equal to the index of the 1st to (i-1)th subcarriers of the ninth second resource unit; the sum of the index of the (i+1)th to 26th subcarriers of the first second resource unit and 24 is equal to the index of the (i+1)th to 26th subcarriers of the ninth second resource unit; the index of the (i+1)th subcarrier of the ninth second resource unit minus 27 is equal to the index of the ith subcarrier of the ninth second resource unit.

[0056] Based on the possible design, the remaining eight second resource units can be determined according to one second resource unit, which provides a feasible scheme for the design of the second resource unit.

[0057] In one possible design, for the second resource unit with the fourth 20 MHz of the 80 MHz preamble punctured, the index of a subcarrier with index less than 12 is equal to the index of a subcarrier of the second resource unit with the third 20 MHz of the 80 MHz preamble punctured; and the index of a subcarrier with index greater than or equal to 12 is equal to the index of a subcarrier of the second resource unit with the third 20 MHz of the 80 MHz preamble punctured plus 240.

[0058] In one possible design, for the second resource unit with the fourth 20 MHz of the 80 MHz preamble punctured, the index of a subcarrier with index greater than -12 is equal to the index of a subcarrier of the second resource unit with the second 20 MHz of the 80 MHz preamble punctured; and the index of a subcarrier with index less than or equal to -12 is equal to the index of a subcarrier of the second resource unit with the second 20 MHz of the 80 MHz preamble punctured minus 240.

[0059] In one possible design, for the second resource unit with the fourth 20 MHz of the 80 MHz preamble punctured, the index of a subcarrier is equal to the index of a subcarrier of the second resource unit with the first 20 MHz of the 80 MHz preamble punctured.

[0060] Based on the above three possible designs, the 9 second resource units with the fourth 20 MHz of the 80 MHz preamble punctured can also be used to determine the 9 second resource units with the other 20 MHz of the 80 MHz preamble punctured. That is, for the same type of second resource unit, which has the same structure, i.e., the same size of second resource unit, another second resource unit can be used to obtain the same type of second resource unit by shifting, flipping, or taking the opposite number, etc., thereby simplifying the implementation complexity and facilitating the design of the channel estimation sequence.

[0061] In one possible design, for the 80 MHz with the first 20 MHz of the 80 MHz preamble punctured, the 80 MHz includes 27 second resource units, each including 2 discrete pilot subcarriers. For the 54 pilot subcarriers corresponding to the 27 second resource units, the absolute value of the difference between the indices of adjacent pilot subcarriers with index less than 0 is Y, and the absolute value of the difference between the indices of adjacent pilot subcarriers with index greater than 0 is Z.

[0062] In one possible design, Y is equal to Z.

[0063] Based on the two possible designs above, the position distribution of the 54 pilot subcarriers corresponding to the 80MHz can be made approximately uniform, improving the accuracy of pilot phase tracking. In addition, the spacing between the pilot subcarriers of the second resource unit can be ensured to be large enough, ensuring the diversity in phase tracking.

[0064] In a third aspect, a communication method is provided, which can be performed by a first communication device. In the case where no special description is given, the "first communication device" in the present application can refer to the first communication device itself, or can refer to a component (such as a processor, a chip, or a chip system, etc.) in the first communication device, or can refer to a logic module or software capable of realizing all or part of the functions of the first communication device. The method comprises: communicating through a third resource unit; wherein the third resource unit comprises 52 subcarriers; in the 52 subcarriers, the absolute value of the difference between the indices of two adjacent subcarriers is a positive integer multiple of p, and p is a positive integer greater than 1.

[0065] Based on the third aspect, the 52 subcarriers included in the third resource unit are discontinuous and can be distributed on a larger bandwidth, improving the transmission power. In the third resource unit, the interval between adjacent subcarriers is a positive integer multiple of p, so the greatest common divisor of the interval between adjacent subcarriers of the third resource unit is p. Since p is a positive integer greater than 1, the distribution of the subcarriers of the third resource unit on the bandwidth can be more uniform (approximately uniform distribution). When data transmission is performed using the third resource unit, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0066] In a possible design, the value of p is 3.

[0067] Based on this possible design, the greatest common divisor of the interval between adjacent subcarriers of the third resource unit is 3, which can make the distribution of the subcarriers of the third resource unit on the bandwidth more uniform (approximately uniform distribution). When data transmission is performed using the third resource unit, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0068] In a possible design, in the 52 subcarriers, the absolute value of the difference between the indices of the qth subcarrier and the q+1th subcarrier arranged in frequency domain order is 15, the absolute value of the difference between the indices of the q+1th subcarrier and the q+2th subcarrier is 12, and q is an odd number.

[0069] In a possible design, in the subcarriers with indexes greater than that of the direct current subcarrier among the 52 subcarriers, the absolute value of the difference between the indexes of the qth subcarrier and the (q+1)th subcarrier arranged in the frequency domain is 15, and the absolute value of the difference between the indexes of the (q+1)th subcarrier and the (q+2)th subcarrier is 12; or, in the subcarriers with indexes greater than that of the direct current subcarrier among the 52 subcarriers, the absolute value of the difference between the indexes of the qth subcarrier and the (q+1)th subcarrier arranged in the frequency domain is 12, and the absolute value of the difference between the indexes of the (q+1)th subcarrier and the (q+2)th subcarrier is 15; where q is an odd number.

[0070] In a possible design, the absolute value of the difference between the indexes of two subcarriers adjacent to the direct current subcarrier among the 52 subcarriers is 42 or 39.

[0071] In a possible design, the number of subcarriers with indexes greater than that of the direct current subcarrier among the 52 subcarriers is 36 or 35.

[0072] Based on the above four possible designs, a feasible scheme is provided for the design of the third resource unit.

[0073] In a possible design, when the transmission bandwidth is 80 MHz and the preamble of one 20 MHz of the 80 MHz is punctured, each 20 MHz of the 80 MHz includes four third resource units, and the absolute value of the difference between the indexes of adjacent subcarriers in the four third resource units is a positive integer multiple of p.

[0074] Based on the possible design, in order to ensure that each third resource unit can cover a larger bandwidth, when the four third resource units of the 80 MHz are determined, the 782 subcarriers can be uniformly distributed, and in order to simplify the structure of the design, the third resource units can be determined by shifting.

[0075] In a possible design, when the preamble of the fourth 20 MHz of the 80 MHz is punctured, the third resource unit includes subcarriers with indexes of [-487:27:-28, 26:27:215, -472:27:-13, 41:27:230]; or, the third resource unit includes subcarriers with indexes of [-481:27:-22, 32:27:221, -466:27:-34, 20:27:236]; or, the third resource unit includes subcarriers with indexes of [-484:27:-25, 29:27:218, -469:27:-37, 17:27:233]; or, the third resource unit includes subcarriers with indexes of [-478:27:-19, 35:27:224, -463:27:-31, 23:27:239].

[0076] In one possible design, the third resource unit includes subcarriers with indices of [-486:27:-27, 27:27:216, -471:27:-12, 42:27:231] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or includes subcarriers with indices of [-480:27:-21, 33:27:222, -465:27:-33, 21:27:237] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or includes subcarriers with indices of [-483:27:-24, 30:27:219, -468:27:-36, 18:27:234] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or includes subcarriers with indices of [-477:27:-18, 36:27:225, -462:27:-30, 24:27:240] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz.

[0077] In one possible design, the third resource unit includes subcarriers with indices of [-485:27:-26, 28:27:217, -470:27:-11, 43:27:232] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or includes subcarriers with indices of [-479:27:-20, 34:27:223, -464:27:-32, 22:27:238] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or includes subcarriers with indices of [-482:27:-23, 31:27:220, -467:27:-35, 19:27:235] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or includes subcarriers with indices of [-476:27:-17, 37:27:226, -461:27:-29, 25:27:241] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz.

[0078] In one possible design, the third resource unit includes subcarriers with indices of [-487:27:-28, 266:27:455, -472:27:-13, 281:27:470] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-481:27:-22, 272:27:461, -466:27:-34, 260:27:476] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-478:27:-19, 275:27:464, -463:27:-31, 263:27:479] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-487:27:-28, 266:27:455, -472:27:-13, 281:27:470] in the case of preamble puncturing in the third 20 MHz of the 80 MHz.

[0079] In one possible design, the third resource unit includes subcarriers with indices of [-486:27:-27, 267:27:456, -471:27:-12, 282:27:471] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-480:27:-21, 273:27:462, -465:27:-33, 261:27:477] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-483:27:-24, 270:27:459, -468:27:-36, 258:27:474] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-477:27:-18, 276:27:465, -462:27:-30, 264:27:480] in the case of preamble puncturing in the third 20 MHz of the 80 MHz.

[0080] In one possible design, the third resource unit includes subcarriers with indices of [-485:27:-26, 268:27:457, -470:27:-11, 283:27:472] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-479:27:-20, 274:27:463, -464:27:-32, 262:27:478] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-482:27:-23, 271:27:460, -467:27:-35, 259:27:475] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or includes subcarriers with indices of [-476:27:-17, 277:27:466, -461:27:-29, 265:27:481] in the case of preamble puncturing in the third 20 MHz of the 80 MHz.

[0081] In one possible design, the third resource unit includes subcarriers with indices of [-484:27:239, 269:27:458, -469:27:254, 284:27:473] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or includes subcarriers with indices of [-478:27:245, 275:27:464, -463:27:233, 263:27:479] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or includes subcarriers with indices of [-481:27:242, 272:27:461, -466:27:230, 260:27:476] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or includes subcarriers with indices of [-475:27:248, 278:27:467, -460:27:236, 266:27:482] in the case of preamble puncturing in the second 20 MHz of the 80 MHz.

[0082] In one possible design, the third resource unit includes subcarriers with indices of [-483:27:240, 270:27:459, -468:27:255, 285:27:474] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or [-477:27:246, 276:27:465, -462:27:234, 264:27:480] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or [-480:27:243, 273:27:462, -465:27:231, 261:27:477] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or [-474:27:249, 279:27:468, -459:27:237, 267:27:483] in the case of preamble puncturing in the second 20 MHz of the 80 MHz.

[0083] In one possible design, the third resource unit includes subcarriers with indices of [-482:27:241, 271:27:460, -467:27:256, 286:27:475] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or [-476:27:247, 277:27:466, -461:27:235, 265:27:481] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or [-479:27:244, 274:27:463, -464:27:232, 262:27:478] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or [-473:27:250, 280:27:469, -458:27:238, 268:27:484] in the case of preamble puncturing in the second 20 MHz of the 80 MHz.

[0084] In one possible design, the third resource unit includes subcarriers with indices of [-244:27:239, 269:27:458, -229:27:254, 284:27:473] in the case of preamble puncturing in the first 20 MHz of the 80 MHz; or [-238:27:245, 275:27:464, -223:27:233, 263:27:479] in the case of preamble puncturing in the first 20 MHz of the 80 MHz; or [-241:27:242, 272:27:461, -226:27:230, 260:27:476] in the case of preamble puncturing in the first 20 MHz of the 80 MHz; or [-235:27:248, 278:27:467, -220:27:236, 266:27:482] in the case of preamble puncturing in the first 20 MHz of the 80 MHz.

[0085] In a possible design, in the case of the preamble puncturing of the first 20 MHz of the 80 MHz, the third resource unit includes subcarriers with indexes of [-243:27:240, 270:27:459, -228:27:255, 285:27:474], or [-237:27:246, 276:27:465, -222:27:234, 264:27:480], or [-240:27:243, 273:27:462, -225:27:231, 261:27:477], or [-234:27:249, 279:27:468, -219:27:237, 267:27:483].

[0086] In a possible design, in the case of the preamble puncturing of the first 20 MHz of the 80 MHz, the third resource unit includes subcarriers with indexes of [-242:27:241, 271:27:460, -227:27:256, 286:27:475], or [-236:27:247, 277:27:466, -221:27:235, 265:27:481], or [-239:27:244, 274:27:463, -224:27:232, 262:27:478], or [-233:27:250, 280:27:469, -218:27:238, 268:27:484].

[0087] Based on the above twelve possible designs, for the preamble puncturing of each 20 MHz of the 80 MHz, indexes of subcarriers included in the third resource unit are provided with multiple feasible schemes.

[0088] In a possible design, in the case of the preamble puncturing of the fourth 20 MHz of the 80 MHz, the index of a subcarrier smaller than 12 in the third resource unit is equal to the index of a subcarrier in the third resource unit in the case of the preamble puncturing of the third 20 MHz of the 80 MHz; and the index of a subcarrier greater than or equal to 12 in the third resource unit is equal to the index of a subcarrier in the third resource unit in the case of the preamble puncturing of the third 20 MHz of the 80 MHz plus 240.

[0089] In a possible design, for the third resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz, the value of the index of the opposite number greater than -12 is equal to the index of the subcarrier of the third resource unit in the case of the second 20MHz preamble puncturing of the 80MHz; the value of the index of the opposite number less than or equal to -12 is equal to the index of the subcarrier of the third resource unit in the case of the second 20MHz preamble puncturing of the 80MHz minus 240.

[0090] In a possible design, for the third resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz, the value of the index of the opposite number is equal to the index of the subcarrier of the third resource unit in the case of the first 20MHz preamble puncturing of the 80MHz.

[0091] Based on the above three possible designs, the 4 third resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz can be used to determine the 4 third resource units in the case of the other 20MHz preamble puncturing of the 80MHz. That is, for the same type of third resource unit, which has the same structure, i.e., the third resource unit with the same size, another third resource unit can be used to obtain the third resource unit by means of translation, inversion or taking the opposite number, thereby simplifying the complexity of implementation and facilitating the design of the channel estimation sequence.

[0092] In a fourth aspect, the present application provides a communication method, which can be executed by a first communication device. In the case of no special description, the "first communication device" in the present application can refer to the first communication device itself, a component (such as a processor, a chip, or a chip system) in the first communication device, or a logic module or software capable of realizing all or part of the functions of the first communication device. The method comprises: communicating through a fourth resource unit; wherein the fourth resource unit comprises 106 subcarriers; in the 106 subcarriers, the absolute value of the difference between the indexes of two adjacent subcarriers is a positive integer multiple of p, and p is a positive integer greater than 1.

[0093] Based on the fourth aspect, the 106 subcarriers included in the fourth resource unit are discontinuous and can be distributed on a larger bandwidth, thereby improving the transmission power. In the fourth resource unit, the interval between the adjacent subcarriers is a positive integer multiple of p, so the greatest common divisor of the interval between the adjacent subcarriers of the fourth resource unit is p. Since p is a positive integer greater than 1, the distribution of the subcarriers of the fourth resource unit on the bandwidth can be more uniform (approximately uniform distribution). When the fourth resource unit is used for data transmission, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0094] In a possible design, the value of p is 3.

[0095] Based on the possible design, the greatest common divisor of the interval between adjacent subcarriers of the fourth resource unit is 3, which can make the distribution of the subcarriers of the fourth resource unit more uniform (approximately uniform distribution), and when data transmission is performed using the fourth resource unit, the average value of the PAPR of the data can be reduced, nonlinear distortion can be avoided as much as possible, and power amplifier efficiency can be improved.

[0096] In a possible design, the number of subcarriers with an index greater than that of the direct current subcarrier in the 106 subcarriers is 72 or 70.

[0097] In a possible design, in the case where the preamble of one 20 MHz of the 80 MHz is punctured, each 20 MHz of the 80 MHz includes two fourth resource units, and in the two fourth resource units, the absolute value of the difference between the indexes of adjacent subcarriers is a positive integer multiple of p.

[0098] Based on the above two possible designs, a feasible scheme is provided for the design of the fourth resource unit.

[0099] In a possible design, in the case where the preamble of the fourth 20 MHz of the 80 MHz is punctured, the fourth resource unit includes subcarriers with indexes: [-490, -487:27:-28, -481:27:-22, -472:27:-13, -466:27:-34, 20:27:236, 26:27:242, 32:27:221, 41:27:230]; or the fourth resource unit includes subcarriers with indexes: [-484:27:-25, -478:27:-19, -469:27:14, -463:27:-31, 17:27:233, 23:27:239, 29:27:245, 35:27:224].

[0100] In a possible design, in the case where the preamble of the fourth 20 MHz of the 80 MHz is punctured, the fourth resource unit includes subcarriers with indexes: [-489, -486:27:-27, -480:27:-21, -471:27:-12, -465:27:-33, 21:27:237, 27:27:243, 33:27:222, 42:27:231]; or the fourth resource unit includes subcarriers with indexes: [-483:27:-24, -477:27:-18, -468:27:15, -462:27:-30, 18:27:234, 24:27:240, 30:27:246, 36:27:225].

[0101] In one possible design, the fourth resource unit includes subcarriers with indices of [-488, -485:27:-26, -479:27:-20, -470:27:-11, -464:27:-32, 22:27:238, 28:27:244, 34:27:223, 43:27:232] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz; or the fourth resource unit includes subcarriers with indices of [-482:27:-23, -476:27:-17, -467:27:16, -461:27:-29, 19:27:235, 25:27:241, 31:27:247, 37:27:226] in the case of preamble puncturing in the fourth 20 MHz of the 80 MHz.

[0102] In one possible design, the fourth resource unit includes subcarriers with indices of [-490, -487:27:-28, -481:27:-22, -472:27:-13, -466:27:-34, 260:27:476, 266:27:482, 272:27:461, 281:27:470] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or the fourth resource unit includes subcarriers with indices of [-484:27:-25, -478:27:-19, -469:27:254, -463:27:-31, 257:27:473, 263:27:479, 269:27:485, 275:27:464] in the case of preamble puncturing in the third 20 MHz of the 80 MHz.

[0103] In one possible design, the fourth resource unit includes subcarriers with indices of [-489, -486:27:-27, -480:27:-21, -471:27:-12, -465:27:-33, 261:27:477, 267:27:483, 273:27:462, 282:27:471] in the case of preamble puncturing in the third 20 MHz of the 80 MHz; or the fourth resource unit includes subcarriers with indices of [-483:27:-24, -477:27:-18, -468:27:255, -462:27:-30, 258:27:474, 264:27:480, 270:27:486, 276:27:465] in the case of preamble puncturing in the third 20 MHz of the 80 MHz.

[0104] In a possible design, in the case of the preamble puncturing of the third 20 MHz of the 80 MHz, the fourth resource unit includes subcarriers with indices of [-488, -485:27:-26, -479:27:-20, -470:27:-11, -464:27:-32, 262:27:478, 268:27:484, 274:27:463, 283:27:472]; or, the fourth resource unit includes subcarriers with indices of [-482:27:-23, -476:27:-17, -467:27:256, -461:27:-29, 259:27:475, 265:27:481, 271:27:487, 277:27:466].

[0105] In a possible design, in the case of the preamble puncturing of the second 20 MHz of the 80 MHz, the fourth resource unit includes subcarriers with indices of [-487, -484:27:239, -478:27:245, -469:27:254, -463:27:233, 263:27:479, 269:27:485, 275:27:464, 284:27:473]; or, the fourth resource unit includes subcarriers with indices of [-481:27:242, -475:27:248, -466:27:257, -460:27:236, 260:27:476, 266:27:482, 272:27:488, 278:27:467].

[0106] In a possible design, in the case of the preamble puncturing of the second 20 MHz of the 80 MHz, the fourth resource unit includes subcarriers with indices of [-486, -483:27:240, -477:27:246, -468:27:255, -462:27:234, 264:27:480, 270:27:486, 276:27:465, 285:27:474]; or, the fourth resource unit includes subcarriers with indices of [-480:27:243, -474:27:249, -465:27:258, -459:27:237, 261:27:477, 267:27:483, 273:27:489, 279:27:468].

[0107] In one possible design, the fourth resource unit includes subcarriers with indices [-485, -482:27:241, -476:27:247, -467:27:256, -461:27:235, 265:27:481, 271:27:487, 277:27:466, 286:27:475] in the case of preamble puncturing in the second 20 MHz of the 80 MHz; or the fourth resource unit includes subcarriers with indices [-479:27:244, -473:27:250, -464:27:259, -458:27:238, 262:27:478, 268:27:484, 274:27:490, 280:27:469] in the case of preamble puncturing in the second 20 MHz of the 80 MHz.

[0108] In one possible design, the fourth resource unit includes subcarriers with indices [-247, -244:27:239, -238:27:245, -229:27:254, -223:27:233, 263:27:479, 269:27:485, 275:27:464, 284:27:473] in the case of preamble puncturing in the first 20 MHz of the 80 MHz; or the fourth resource unit includes subcarriers with indices [-241:27:242, -235:27:248, -226:27:257, -220:27:236, 260:27:476, 266:27:482, 272:27:488, 278:27:467] in the case of preamble puncturing in the first 20 MHz of the 80 MHz.

[0109] In one possible design, the fourth resource unit includes subcarriers with indices [-246, -243:27:240, -237:27:246, -228:27:255, -222:27:234, 264:27:480, 270:27:486, 276:27:465, 285:27:474] in the case of preamble puncturing in the first 20 MHz of the 80 MHz; or the fourth resource unit includes subcarriers with indices [-240:27:243, -234:27:249, -225:27:258, -219:27:237, 261:27:477, 267:27:483, 273:27:489, 279:27:468] in the case of preamble puncturing in the first 20 MHz of the 80 MHz.

[0110] In a possible design, in the case of the preamble puncturing of the first 20MHz of the 80MHz, the fourth resource unit includes subcarriers with indexes of: [-245, -242:27:241, -236:27:247, -227:27:256, -221:27:235, 265:27:481, 271:27:487, 277:27:466, 286:27:475]; or, the fourth resource unit includes subcarriers with indexes of: [-239:27:244, -233:27:250, -224:27:259, -218:27:238, 262:27:478, 268:27:484, 274:27:490, 280:27:469].

[0111] Based on the above twelve possible designs, for the case of the preamble puncturing of each 20MHz of the 80MHz, multiple feasible schemes are provided for the indexes of the subcarriers included in the fourth resource unit.

[0112] In a possible design, in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, in the fourth resource unit, the indexes of the subcarriers with indexes less than 12 are equal to the indexes of the subcarriers in the fourth resource unit in the case of the preamble puncturing of the third 20MHz of the 80MHz; and the indexes of the subcarriers with indexes greater than or equal to 12 are equal to the indexes of the subcarriers in the fourth resource unit in the case of the preamble puncturing of the third 20MHz of the 80MHz plus 240.

[0113] In a possible design, in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, in the fourth resource unit, the indexes with values greater than -12 in the opposite number are equal to the indexes of the subcarriers in the fourth resource unit in the case of the preamble puncturing of the second 20MHz of the 80MHz; and the indexes with values less than or equal to -12 in the opposite number are equal to the indexes of the subcarriers in the fourth resource unit in the case of the preamble puncturing of the second 20MHz of the 80MHz minus 240.

[0114] In a possible design, in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, in the fourth resource unit, the indexes in the opposite number are equal to the indexes of the subcarriers in the fourth resource unit in the case of the preamble puncturing of the first 20MHz of the 80MHz.

[0115] Based on the above three possible designs, the 2 fourth resource units in the case of the preamble puncturing of the fourth 20MHz of the 80MHz can also be determined according to the 2 fourth resource units in the case of the preamble puncturing of the fourth 20MHz of the 80MHz. That is, for the same type of fourth resource units, they have the same structure, that is, the same size of the fourth resource units, and can be obtained by another fourth resource unit in the form of translation, flipping or taking the opposite number, etc., thereby simplifying the complexity of implementation and facilitating the design of channel estimation sequence.

[0116] In a fifth aspect, the present application provides a communication device, which can be applied to the first communication device of any one of the above-mentioned first aspect to the fourth aspect to realize the functions performed by the first communication device. The communication device can be the first communication device, a chip or a chip system or a system on chip, etc. of the first communication device. The communication device can perform the functions of the first communication device through hardware or corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. For example, a transmission module and a processing module. The transmission module can independently complete the following transmission operations, or can cooperate with the processing module to complete the following transmission operations. Correspondingly, the processing module can also independently complete the following processing operations, or can cooperate with the transmission module to complete the following processing operations, which is not limited.

[0117] For example, the transmission module is configured to communicate through the first resource unit. The first resource unit includes 242 subcarriers. The absolute value of the difference between the indices of adjacent subcarriers in the 1st to the mth subcarriers arranged in the frequency domain order is n, where n is a positive integer greater than 1. The absolute value of the difference between the indices of adjacent subcarriers in the m+1th to the 242nd subcarriers arranged in the frequency domain order is n. The absolute value of the difference between the indices of the mth and the m+1th subcarriers arranged in the frequency domain order is a positive integer multiple of n.

[0118] In another example, the transmission module is configured to communicate through the second resource unit. The second resource unit includes 26 subcarriers. The absolute value of the difference between the indices of adjacent subcarriers in the 1st to the ith subcarriers arranged in the frequency domain order is j, where j is a positive integer greater than 1. The absolute value of the difference between the indices of adjacent subcarriers in the i+1th to the 26th subcarriers arranged in the frequency domain order is j. The absolute value of the difference between the indices of the ith and the i+1th subcarriers arranged in the frequency domain order is a positive integer multiple of j.

[0119] In yet another example, the transmission module is configured to communicate via a third resource unit, wherein the third resource unit includes 52 subcarriers, and an absolute value of a difference between indices of two adjacent subcarriers in the 52 subcarriers is a positive integer multiple of p, where p is a positive integer greater than 1.

[0120] In yet another example, the transmission module is configured to communicate via a fourth resource unit, wherein the fourth resource unit includes 106 subcarriers, and an absolute value of a difference between indices of two adjacent subcarriers in the 106 subcarriers is a positive integer multiple of p, where p is a positive integer greater than 1.

[0121] Optionally, the transmission module and the processing module of the communication apparatus in the fifth aspect can also perform the corresponding functions in any possible design of the first aspect, or perform the corresponding functions in any possible design of the second aspect, or perform the corresponding functions in any possible design of the third aspect, or perform the corresponding functions in any possible design of the fourth aspect. For details, refer to the detailed description of the method examples. The beneficial effects that can be achieved can also be seen from the foregoing related descriptions.

[0122] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which comprises one or more transceivers. The transceiver is controlled by a processor to perform the communication method in any one of the first aspect to the fourth aspect.

[0123] In a possible design, the communication apparatus further comprises one or more memories coupled to the one or more processors, and the one or more memories are configured to store computer programs or instructions. In a possible implementation, the memory is located outside the communication apparatus. In another possible implementation, the memory is located inside the communication apparatus. In the embodiment of the present application, the processor and the memory can also be integrated into one device, i.e., the processor and the memory can also be integrated together. In a possible implementation, the communication apparatus further comprises a transceiver, and the transceiver is configured to receive information and / or send information.

[0124] In a possible design, the transceiver can also be a communication interface, and the one or more communication interfaces are coupled to the one or more processors, and the one or more communication interfaces are configured to communicate with other modules outside the communication apparatus.

[0125] In a seventh aspect, an embodiment of the present application provides a communication apparatus, which comprises an interface circuit. The interface circuit is configured to perform the communication method in any one of the first aspect to the fourth aspect under control of a logic circuit.

[0126] In an eighth aspect, an embodiment of the present application provides a computer readable storage medium storing computer instructions or programs, which, when executed on a computer, cause the communication method according to any one of the first aspect to the fourth aspect to be performed.

[0127] In a ninth aspect, an embodiment of the present application provides a computer program product containing computer instructions, which, when executed on a computer, cause the communication method according to any one of the first aspect to the fourth aspect to be performed.

[0128] In a tenth aspect, an embodiment of the present application provides a computer program, which, when executed on a computer, causes the communication method according to any one of the first aspect to the fourth aspect to be performed.

[0129] In an eleventh aspect, an embodiment of the present application provides a chip, comprising: a transceiver unit, configured to execute the communication method according to any one of the first aspect to the fourth aspect under control of a processing unit.

[0130] The technical effects brought by any one of the sixth aspect to the eleventh aspect can refer to the technical effects brought by any one of the first aspect to the fourth aspect, which will not be repeated here.

[0131] In a twelfth aspect, an embodiment of the present application provides a communication system, which can comprise a communication device configured to execute the communication method according to the first aspect or any possible design of the first aspect, or a communication device configured to execute the communication method according to the second aspect or any possible design of the second aspect, or a communication device configured to execute the communication method according to the third aspect or any possible design of the third aspect, or a communication device configured to execute the communication method according to the fourth aspect or any possible design of the fourth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0132] FIG. 1 is a schematic diagram of an MRU according to an embodiment of the present application;

[0133] FIG. 2 is a schematic diagram of an RU according to an embodiment of the present application;

[0134] FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present application;

[0135] FIG. 4 is a schematic diagram of a communication device according to an embodiment of the present application;

[0136] FIG. 5 is a flowchart of a communication method according to an embodiment of the present application;

[0137] FIG. 6 is a flowchart of a communication method according to an embodiment of the present application;

[0138] FIG. 7 is a flowchart of a communication method according to an embodiment of the present application;

[0139] FIG. 8 is a flowchart of a communication method according to an embodiment of the present application;

[0140] FIG. 9 is a diagram of a simulation comparison result according to an embodiment of the present application;

[0141] FIG. 10 is a diagram of a simulation comparison result according to an embodiment of the present application;

[0142] FIG. 11 is a diagram of a simulation comparison result according to an embodiment of the present application;

[0143] FIG. 12 is a diagram of a simulation comparison result according to an embodiment of the present application;

[0144] FIG. 13 is a diagram of a communication device according to an embodiment of the present application;

[0145] FIG. 14 is a diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0146] The technical solution provided by the embodiments of the present application can be applied to a wireless local area network (WLAN) supporting institute of electrical and electronics engineers (IEEE) related standards, including: 802.11a / b / g standards, 802.11n standards, 802.11ac standards, 802.11ax standards, 802.11be standards, 802.11bn standards / ultra high reliability (UHR) standards / Wi-Fi8 standards, 802.11ad standards, 802.11ay standards, 802.11bf standards / sensing standards, ultra wide band (UWB) standards / 802.15 standards, etc.

[0147] Among them, 802.11n standards are called high throughput (HT), 802.11ac standards are called very high throughput (VHT), 802.11ax standards are called high efficient (HE), 802.11be standards are called extremely high throughput (EHT), and 802.11bn standards are called ultra high reliability (UHR).

[0148] In terms of bandwidth configuration, the 802.11ax standard currently supports the following bandwidth configurations: 20MHz, 40MHz, 80MHz, 160MHz, and 80+80MHz. Among them, the difference between 160MHz and 80+80MHz is that the former is a continuous frequency band, while the latter can be separated between the two 80MHz. In the 802.11be standard, 240MHz / 160+80MHz, 320MHz / 160+160Mhz, etc. configurations will be supported.

[0149] In the 802.11ax standard and the 802.11be standard, the bandwidth allocation method is proposed for the case that at least one 20MHz subchannel in the 80MHz bandwidth is unavailable (or described as at least one 20MHz preamble puncturing).

[0150] Among them, taking the 802.11be standard as an example, the 802.11be standard defines a subcarrier distribution (tone plan) based on multiple continuous resource units (MRU). As shown in FIG. 1, when the total bandwidth is 80MHz, there is one 20MHz subchannel unavailable, the bandwidth can be divided into 484+242-tone MRU (i.e. continuous resource unit containing 484 subcarriers and continuous resource unit containing 242 subcarriers). 484+242-tone MRU1 represents that the first 20MHz subchannel is unavailable, 484+242-tone MRU2 represents that the second 20MHz subchannel is unavailable, 484+242-tone MRU3 represents that the third 20MHz subchannel is unavailable, and 484+242-tone MRU4 represents that the fourth 20MHz subchannel is unavailable. As shown in FIG. 2, the 484-tone RU can be split into two 242-tone RUs, each 242-tone RU can be split into two 106-tone RUs and one 26-tone RU, each 106-tone RU can be split into two 52-tone RUs, and each 52-tone RU can be split into two 26-tone RUs. Among them, 484L and 484R represent the left half and the right half of the 484-tone RU, respectively, containing 242 subcarriers, which is another illustration of 484+5DC.

[0151] The following describes the index of various RUs in the entire bandwidth. In a continuous 80MHz bandwidth, there are 1024 subcarriers, and the indexes are -512,..., 0,..., 511. The indexes of the subcarriers of each RU, the subcarrier range, and the location of the pilot subcarriers are shown in Table 1, where RU# (such as RU1, RU2,..., RU37) represents the index of the RU, and [a:b] represents that the subcarrier range of the RU is from a to b, including a and b themselves:

[0152] Table 1

[0153] The following describes the allocation of subcarriers in a non-continuous bandwidth in which there is a 20MHz subchannel that is unavailable in the 80MHz, in which case there are 782 subcarriers in total, and the specific allocation is shown in Table 2 below, where 484-tone RU1 and 484-tone RU2 represent RU1 and RU2 in the 484-tone RU of Table 1, respectively, and 242-tone RU1, 242-tone RU2, 242-tone RU3, and 242-tone RU4 represent RU1, RU2, RU3, and RU4 in the 242-tone RU of Table 1, respectively, where the specific subcarrier allocation of the 26-tone RU, 52-tone RU, 106-tone RU, and 242-tone RU is the same as in Table 1.

[0154] Table 2

[0155] Based on the above description of the RUs, the subcarriers included in each of the RUs are continuous, and for RUs with a small number of subcarriers, in a power spectral density limited scenario, the transmission power is limited by the RU bandwidth, the maximum transmission power is small, and the transmission rate distance is greatly limited.

[0156] Specifically, with the continuous development of communication technology, strict limits are placed on the maximum power and maximum power spectral density, that is, the transmission power of the communication device cannot exceed the maximum power value, and the power spectral density of the transmission cannot exceed the maximum power spectral density.

[0157] For example, in the regulation of 6GHz spectrum, the description of the communication mode of low power indoor (LPI) in the room is taken as an example. For an access point (AP), the maximum power is 36 dBm (decibel-milliwatts), and the maximum power spectral density is 5 dBm / MHz (decibel-milliwatts / megahertz); for a station (STA), the maximum power is 24 dBm, and the maximum power spectral density is -1 dBm / MHz. The power transmitted by the device is limited by both the maximum power and the maximum power spectral density, that is, the transmission power cannot exceed the maximum power value, and the power spectral density of the transmission cannot exceed the maximum power spectral density. Compared with the maximum power, the limitation of the maximum power spectral density is more strict, and the maximum power allowed to be transmitted is usually more limited by the power spectral density. With the increase of the transmission bandwidth, the maximum transmission power of the device also increases accordingly, as shown in the following Table 3. When the bandwidth is the maximum 320MHz, the limit of the maximum power specified in the regulation is reached. Below this bandwidth, only lower power can be transmitted because of the limit of the maximum power spectral density.

[0158] Table 3

[0159] In order to improve the maximum transmission power of each resource block in the LPI uplink transmission, it is proposed that the concept of distributed resource unit (dRU) can be used, that is, by discretely distributing the subcarriers contained in each RU in the whole or larger bandwidth range, the maximum transmission power allowed in the LPI mode is improved.

[0160] In the case of 20MHz preamble puncturing in 80MHz, a tone plan of a DRU can be designed as follows:

[0161] Case 1: In the case of 20MHz preamble puncturing in the last 20MHz (i.e., the fourth 20MHz) of 80MHz, a 242-tone DRU subcarrier division can be as shown in Table 4:

[0162] Table 4

[0163] The subcarrier division design of the DRU1, DRU2 and DRU3 is shown in Tables 5 to 7:

[0164] Table 5

[0165] Table 6

[0166] Table 7

[0167] In the above Tables 4-7, [a:b:c] means a data set, starting from a to c with a step of b, i.e. the set [a, a+b, a+2b, a+3b, …, c], whether the last value c can be taken depends on whether c-a is exactly an integer multiple of b, if not, the element c is not included. When b is equal to 1, [a:c] can be used to represent [a:1:c] generally.

[0168] Based on the above Tables 4-7, it can be seen that the subcarrier ranges contained by DRUs of different sizes cover the whole bandwidth, and the bandwidths occupied by the DRUs are larger than those of the same size continuous RUs, so the transmission power on the DRUs can be larger during uplink transmission.

[0169] Case 2: In the case of preamble puncturing in the third 20MHz of 80MHz, a 242-tone DRU subcarrier distribution can be as shown in Table 8:

[0170] Table 8

[0171] Case 3: In the case of preamble puncturing in the second 20MHz of 80MHz, a 242-tone DRU subcarrier distribution can be as shown in Table 9:

[0172] Table 9

[0173] Case 4: In the case of preamble puncturing in the first 20MHz of 80MHz, a 242-tone DRU subcarrier distribution can be as shown in Table 10:

[0174] Table 10

[0175] In the above DRU design, for the same type of DRU (i.e. DRU of the same size), the greatest common divisor of the intervals between adjacent subcarriers is 1, i.e. the distribution of the subcarriers of the DRU in the bandwidth is uneven, resulting in a larger average value of the peak to average power ratio (PAPR) of the data during data transmission using the DRU, which is prone to cause non-linear distortion and reduce the efficiency of the power amplifier. In addition, for the same type of DRU, they do not have the same structure, which increases the implementation complexity.

[0176] PAPR, short for peak-to-average ratio, wireless signal is observed from the time domain is constantly changing amplitude, so the transmission power of wireless signal is not constant. PAPR refers to the ratio of the peak power of the signal in a period of time to the average power of the signal. Since the OFDM symbol is composed of a plurality of independently modulated sub-carrier signals, when the phases of each sub-carrier are the same or similar, the superimposed signal will be modulated by the same initial phase signal, thereby generating a larger instantaneous power peak, which further leads to a higher PAPR. Since the dynamic range of the general power amplifier is limited, the MIMO-OFDM signal with a large peak-to-average ratio is easy to enter the nonlinear region of the power amplifier, resulting in nonlinear distortion of the signal, causing obvious spectrum expansion interference and in-band signal distortion, leading to a serious decline in the performance of the entire system. High peak-to-average ratio has become a major technical obstacle to OFDM.

[0177] For example, for a 242-tone DRU, from the above Table 4, it can be seen that the interval between adjacent subcarriers of the DRU is 3 or 26, and the greatest common divisor of 3 and 26 is 1. The distribution of the subcarriers of the 242-tone DRU in the bandwidth is uneven, which leads to a large average value of the PAPR of the data when the 242-tone DRU is used for data transmission, and is easy to cause nonlinear distortion and reduce the efficiency of the power amplifier. In addition, for the same size of 242-tone DRU, it does not have the same structure, which increases the implementation complexity.

[0178] To solve the above technical problems, the embodiment of the application provides a communication method, which comprises: communicating through a first resource unit; wherein the first resource unit comprises 242 subcarriers; in the 1st to the mth subcarriers arranged in the frequency domain order in the 242 subcarriers, the absolute value of the difference between the indexes of adjacent subcarriers is n, n is a positive integer greater than 1; in the m+1th to the 242nd subcarriers arranged in the frequency domain order in the 242 subcarriers, the absolute value of the difference between the indexes of adjacent subcarriers is n; the absolute value of the difference between the indexes of the mth and the m+1th subcarriers arranged in the frequency domain order in the 242 subcarriers is a positive integer multiple of n.

[0179] The first resource unit provided by the embodiment of the present application includes 242 subcarriers which are discontinuous and can be distributed on a larger bandwidth, thereby improving the transmitting power. In the first resource unit, the interval between adjacent subcarriers is n or a positive integer multiple of n, so that the greatest common divisor of the interval between adjacent subcarriers of the first resource unit is n. Since n is a positive integer greater than 1, the distribution of the subcarriers of the first resource unit on the bandwidth can be more uniform (approximately uniform distribution). When the first resource unit is used for data transmission, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0180] The implementation of the embodiment of the present application will be described in detail below in combination with the drawings of the specification.

[0181] The communication method provided by the embodiment of the present application is applicable to a wireless local area network (WLAN) supporting Institute of Electrical and Electronics Engineers (IEEE) related standards, including: 802.11a / b / g standards, 802.11n standards, 802.11ac standards, 802.11ax standards, 802.11be standards, 802.11bn standards / UHR standards / WiFi8 standards, 802.11ad standards, 802.11ay standards, 802.11bf standards / sensing standards, UWB standards / 802.15 standards, etc., without limitation.

[0182] The WLAN communication system provided by the embodiment of the present application will be described below taking FIG. 3 as an example.

[0183] FIG. 3 is a schematic diagram of a communication system provided by the embodiment of the present application, as shown in FIG. 3, the communication system can include an access point device and a station device; wherein one or more access point devices can communicate with one or more station devices, the access point device can also communicate with one or more other access point devices, and the station device can also communicate with one or more other station devices.

[0184] Among them, the access point device can be an AP, and the station device can be a STA.

[0185] For example, the AP can be a device supporting 802.11be standards or supporting future Wi-Fi standards and various WLAN standards; or a device supporting 802.11a / b / g standards, 802.11n standards, 802.11ac standards, 802.11ax standards, 802.11be standards, 802.11bn standards / UHR standards / WiFi8 standards, without limitation.

[0186] For example, the AP can be a terminal device with a Wi-Fi chip, a network device, a communication server, a router, a switch, a bridge, a computer, etc. The AP can also be an access point for mobile users to enter a wired network, mainly deployed in homes, buildings, and parks, with a typical coverage radius of tens of meters to hundreds of meters, and of course, can also be deployed outdoors. The AP is equivalent to a bridge connecting wired and wireless networks, and its main function is to connect various wireless network clients together and then access the Ethernet network.

[0187] For example, the STA can be a wireless communication chip, a wireless sensor, a wireless communication terminal, a communication server, a router, a switch, a bridge, a computer, etc. For example, the STA can be a mobile phone supporting Wi-Fi communication function, a tablet computer supporting Wi-Fi communication function, a set-top box supporting Wi-Fi communication function, a smart TV supporting Wi-Fi communication function, a smart wearable device supporting Wi-Fi communication function, a vehicle-mounted communication device supporting Wi-Fi communication function, and a computer supporting Wi-Fi communication function, etc., without limitation.

[0188] For example, the STA can be a wireless communication chip, a wireless sensor, a wireless communication terminal, a communication server, a router, a switch, a bridge, a computer, etc. For example, the STA can be a mobile phone supporting Wi-Fi communication function, a tablet computer supporting Wi-Fi communication function, a set-top box supporting Wi-Fi communication function, a smart TV supporting Wi-Fi communication function, a smart wearable device supporting Wi-Fi communication function, a vehicle-mounted communication device supporting Wi-Fi communication function, and a computer supporting Wi-Fi communication function, etc., without limitation.

[0189] In a specific implementation, as shown in FIG. 3, each access point device and station device can also adopt the composition structure shown in FIG. 4, or include the components shown in FIG. 4. FIG. 4 is a composition diagram of a communication apparatus 400 provided by an embodiment of the present application. The communication apparatus 400 can be an access point device or a chip or system on chip in the access point device; or a station device or a chip or system on chip in the station device. As shown in FIG. 4, the communication apparatus 400 includes a processor 401, a transceiver 402, and a communication line 403.

[0190] Further, the communication apparatus 400 can also include a memory 404. The processor 401, the memory 404, and the transceiver 402 can be connected through the communication line 403.

[0191] The processor 401 can be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 401 can also be other apparatuses with processing capabilities, such as a circuit, a device, or a software module, without limitation.

[0192] The transceiver 402 is configured to communicate with other devices or other communication networks. The other communication networks can be an Ethernet, a radio access network (RAN), or the like. The transceiver 402 can be a module, a circuit, a transceiver, or any apparatus capable of implementing communication.

[0193] The communication line 403 is configured to transmit information between components included in the communication apparatus 400.

[0194] The memory 404 is configured to store instructions. The instructions can be a computer program.

[0195] The memory 404 can be a read-only memory (ROM) or other type of static storage device that can store static information and / or instructions, or a random access memory (RAM) or other type of dynamic storage device that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magneto-optical disk, a magnetic disk storage or other magnetic storage devices, and the like, without limitation.

[0196] It should be noted that the memory 404 can exist independently of the processor 401, or can be integrated with the processor 401. The memory 404 can be configured to store instructions or program codes or some data, and the like. The memory 404 can be located in the communication apparatus 400, or can be located outside the communication apparatus 400, without limitation. The processor 401 is configured to execute the instructions stored in the memory 404 to implement the communication method provided by the embodiments described below.

[0197] In an example, the processor 401 can include one or more CPUs, such as CPU0 and CPU1 in FIG. 4.

[0198] As an optional implementation, the communication apparatus 400 includes multiple processors, for example, in addition to the processor 401 in FIG. 4, the processor 407 can also be included.

[0199] As an optional implementation, the communication apparatus 400 further includes an output device 405 and an input device 406. Exemplarily, the input device 406 is a keyboard, a mouse, a microphone, a joystick, or the like, and the output device 405 is a display screen, a speaker, or the like.

[0200] It should be noted that the communication apparatus 400 can be a desktop computer, a laptop computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a similar structure to that in FIG. 4. In addition, the constituent structures shown in FIG. 4 do not constitute a limitation on the communication apparatus, and the communication apparatus can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0201] In embodiments of the present application, a chip system can be composed of a chip, or can include a chip and other discrete devices.

[0202] In addition, the actions, terms, and the like involved in the embodiments of the present application can be mutually referred to and are not limited. The message name or parameter name in the message exchanged between the devices in the embodiments of the present application is only an example, and other names can also be used in specific implementations, which are not limited.

[0203] The communication method provided by the embodiments of the present application will be described below with reference to FIG. 5 in combination with the communication system shown in FIG. 3, where the first communication apparatus can be any access point device or station device in the communication system shown in FIG. 3. The first communication apparatus described in the following embodiments can have the components shown in FIG. 4 or FIG. 4.

[0204] FIG. 5 is a flowchart of a communication method according to an embodiment of the present application. As shown in FIG. 5, the method can include the following steps.

[0205] In step 501, the first communication apparatus communicates through a first resource unit.

[0206] The first resource unit includes 242 subcarriers, and the first resource unit can also be referred to as a 242-tone DRU.

[0207] The absolute value of the difference between the indexes of adjacent subcarriers in the 1st to the mth subcarriers arranged in the frequency domain order in the 242 subcarriers is n; the absolute value of the difference between the indexes of adjacent subcarriers in the (m+1)th to the 242nd subcarriers arranged in the frequency domain order in the 242 subcarriers is n; the absolute value of the difference between the indexes of the mth and the (m+1)th subcarriers arranged in the frequency domain order in the 242 subcarriers is a positive integer multiple of n; and n is a positive integer greater than 1.

[0208] The index of the mth subcarrier is less than the index of the direct current subcarrier; and the index of the (m+1)th subcarrier is greater than the index of the direct current subcarrier. The index of the direct current subcarrier is [-1:1].

[0209] For example, the value of m can be 162.

[0210] For example, the value of n can be 3.

[0211] For example, the positive integer multiple of n can be 27; or the positive integer multiple of n can be 267.

[0212] Optionally, in the case that the transmission bandwidth is 80MHz and one 20MHz preamble of the 80MHz is punctured, the 80MHz includes three first resource units; the xth subcarrier of the three first resource units is continuous; x=1, 2, …, 242.

[0213] In the first possible design, in the case that the fourth 20MHz preamble of the 80MHz is punctured, the value of n can be 3 and the positive integer multiple of n can be 27.

[0214] For example, the indexes of the subcarriers included in the first resource unit are [-496:3:-13, 14:3:251]; or the indexes of the subcarriers included in the first resource unit are [-495:3:-12, 15:3:252]; or the indexes of the subcarriers included in the first resource unit are [-494:3:-11, 16:3:253].

[0215] In the second possible design, in the case that the third 20MHz preamble of the 80MHz is punctured, the value of n can be 3 and the positive integer multiple of n can be 267.

[0216] For example, the indexes of the subcarriers included in the first resource unit are [-496:3:-13, 254:3:491]; or the indexes of the subcarriers included in the first resource unit are [-495:3:-12, 255:3:492]; or the indexes of the subcarriers included in the first resource unit are [-494:3:-11, 256:3:493].

[0217] In the third possible design, in the case of the preamble puncturing of the second 20MHz of the 80MHz, n can be 3, and the positive integer multiple of n can be 267.

[0218] For example, the first resource unit includes subcarriers with indexes [-493:3:-256, 11:3:494], or [-492:3:-255, 12:3:495], or [-491:3:-254, 13:3:496].

[0219] In the fourth possible design, in the case of the preamble puncturing of the first 20MHz of the 80MHz, n can be 3, and the positive integer multiple of n can be 27.

[0220] For example, the first resource unit includes subcarriers with indexes [-253:3:-16, 11:3:494], or [-252:3:-15, 12:3:495], or [-251:3:-14, 13:3:496].

[0221] Optionally, the subcarriers corresponding to the first resource unit can be determined based on the following manner:

[0222] In the 80MHz bandwidth, since the subcarrier spacing is 78.125 kHz, there are 1024 subcarriers, with subcarrier indexes [-512, …, 0, …, 511], arranged in the frequency domain order from low to high. The left 12 [-512:-501] and the right 11 [501:511] are in the guard interval and cannot be used. At least 5 subcarriers [-2:2] are near the direct current subcarrier and also cannot be used. In the case of the preamble puncturing of one 20MHz, there are 242 subcarriers that cannot be used. Therefore, the total number of subcarriers that can be used by the three first resource units of the 80MHz is 782.

[0223] In order to ensure that each first resource unit can cover a larger bandwidth, when determining the three first resource units (the first resource unit 1, the first resource unit 2, and the first resource unit 3) of the 80MHz, the 782 subcarriers can be divided into three equal parts. In order to simplify the structure of the design, the first resource unit 2 is the first resource unit 1 shifted right by one subcarrier spacing, and the first resource unit 3 is the first resource unit 1 shifted right by two subcarrier spacings, i.e., the first resource unit 2 = the first resource unit 1 + 1, and the first resource unit 3 = the first resource unit 1 + 2.

[0224] Optionally, a first resource unit 1 in the case of the fourth 20MHz preamble puncturing of the 80MHz can be determined first, the first resource unit 1 is shifted right by 1 subcarrier to obtain a first resource unit 2, the first resource unit 1 is shifted right by 2 subcarriers to obtain a first resource unit 3, or the first resource unit 2 is shifted right by 1 subcarrier to obtain a first resource unit 3.

[0225] For example, the indexes of the 3 first resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz can be shown in Table 11 as follows:

[0226] Table 11

[0227] In which, the first resource unit 1 in the case of the fourth 20MHz preamble puncturing of the 80MHz can be recorded as [DRU_base], the first resource unit 2 can be recorded as [DRU_base]→1, and the first resource unit 3 can be recorded as [DRU_base]→2.

[0228] Optionally, the 3 first resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz can also be used to determine the 3 first resource units in the case of the preamble puncturing of other 20MHz of the 80MHz.

[0229] In the first possible design, the 3 first resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz can be shifted right by n positive integer times of subcarriers (for example, in the case of n equaling 3, shifted right by 240 subcarriers) to obtain the 3 first resource units in the case of the third 20MHz preamble puncturing of the 80MHz.

[0230] That is, in the first resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz, the index of the subcarrier less than 12 is equal to the index of the subcarrier of the first resource unit in the case of the third 20MHz preamble puncturing of the 80MHz, and the index of the subcarrier greater than or equal to 12 is equal to the index of the subcarrier of the first resource unit in the case of the third 20MHz preamble puncturing of the 80MHz plus 240.

[0231] For example, the indexes of the subcarriers of the three first resource units in the case of the third 20MHz preamble puncturing of the 80MHz can be shown in Table 12 as follows. Specifically, the indexes of the subcarriers in [DRU_base] of Table 11 greater than or equal to 12 can be shifted right by 240 subcarriers to obtain the first resource unit 1 in Table 12; the indexes of the subcarriers in [DRU_base]→1 of Table 11 greater than or equal to 12 can be shifted right by 240 subcarriers to obtain the first resource unit 2 in Table 12; and the indexes of the subcarriers in [DRU_base]→2 of Table 11 greater than or equal to 12 can be shifted right by 240 subcarriers to obtain the first resource unit 3 in Table 12.

[0232] Table 12

[0233] In the second possible design, the indexes of the subcarriers of the three first resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz can be taken as the opposite numbers, and the opposite numbers less than or equal to -12 are shifted left by n positive integer times of subcarriers (for example, shifted left by 240 subcarriers in the case of n equaling 3) to obtain the three first resource units in the case of the second 20MHz preamble puncturing of the 80MHz.

[0234] That is, in the first resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz, the opposite numbers greater than -12 of the indexes are equal to the indexes of the subcarriers of the first resource unit in the case of the second 20MHz preamble puncturing of the 80MHz, and the opposite numbers less than or equal to -12 of the indexes minus 240 are equal to the indexes of the subcarriers of the first resource unit in the case of the second 20MHz preamble puncturing of the 80MHz.

[0235] For example, the indexes of the subcarriers of the three first resource units in the case of the second 20MHz preamble puncturing of the 80MHz can be shown in Table 13 as follows. Specifically, the indexes of the subcarriers in [DRU_base] of Table 11 can be taken as the opposite numbers, and the opposite numbers less than or equal to -12 are shifted left by 240 subcarriers to obtain the first resource unit 3 in Table 13; the indexes of the subcarriers in [DRU_base]→1 of Table 11 can be taken as the opposite numbers, and the opposite numbers less than or equal to -12 are shifted left by 240 subcarriers to obtain the first resource unit 2 in Table 13; and the indexes of the subcarriers in [DRU_base]→2 of Table 11 can be taken as the opposite numbers, and the opposite numbers less than or equal to -12 are shifted left by 240 subcarriers to obtain the first resource unit 1 in Table 13.

[0236] Table 13

[0237] In a third possible design, the indexes of the subcarriers of the 3 first resource units in the case of the fourth 20MHz of the 80MHz being punctured can be negated to obtain the indexes of the subcarriers of the 3 first resource units in the case of the first 20MHz of the 80MHz being punctured.

[0238] That is, the negation of the indexes of the first resource units in the case of the fourth 20MHz of the 80MHz being punctured is equal to the indexes of the subcarriers of the first resource units in the case of the first 20MHz of the 80MHz being punctured.

[0239] For example, the indexes of the subcarriers of the 3 first resource units in the case of the first 20MHz of the 80MHz being punctured can be as shown in Table 14 below. Specifically, the indexes of the subcarriers of [DRU_base] in Table 11 above can be negated to obtain the first resource unit 3 in Table 14; the indexes of the subcarriers of [DRU_base]→1 in Table 11 above can be negated to obtain the first resource unit 2 in Table 14; and the indexes of the subcarriers of [DRU_base]→2 in Table 11 above can be negated to obtain the first resource unit 1 in Table 14.

[0240] Table 14

[0241] Based on the above description of the first resource units, the second resource units can also be determined according to the first resource units.

[0242] The first resource unit includes the subcarriers of 9 second resource units. Each second resource unit includes 26 subcarriers, and the second resource unit can also be referred to as a 26-tone DRU.

[0243] The absolute value of the difference between the indexes of adjacent subcarriers in the 1st subcarrier to the i-th subcarrier arranged in the frequency domain order is j; the absolute value of the difference between the indexes of adjacent subcarriers in the (i+1)-th subcarrier to the 26th subcarrier arranged in the frequency domain order is j; the absolute value of the difference between the indexes of the i-th subcarrier and the (i+1)-th subcarrier arranged in the frequency domain order is a positive integer multiple of j; and j is a positive integer greater than 1.

[0244] The index of the i-th subcarrier is less than the index of the direct current subcarrier; and the index of the (i+1)-th subcarrier is greater than the index of the direct current subcarrier.

[0245] For example, the value of i can be 18; or the value of i can be 17.

[0246] For example, the value of j can be 27.

[0247] For example, the positive integer multiple of j is 54.

[0248] Optionally, in the case of the transmission bandwidth of 80MHz and the 20MHz preamble of 80MHz being punctured, each 20MHz of 80MHz includes 9 second resource units, in the subcarriers whose indexes are smaller than the index of the direct current subcarrier, the absolute value of the difference between the indexes of adjacent subcarriers is 3; in the subcarriers whose indexes are greater than the index of the direct current subcarrier, the absolute value of the difference between the indexes of adjacent subcarriers is 3; in the 9 second resource units, the absolute value of the difference between the indexes of 2 subcarriers adjacent to the direct current subcarrier is 30.

[0249] In the first possible design, in the case of the preamble of the fourth 20MHz of 80MHz being punctured, according to the first resource unit 1, it can be determined that the second resource unit includes the subcarriers with indexes of [-487:27:-28, 26:27:215]; or the second resource unit includes the subcarriers with indexes of [-472:27:-13, 41:27:230]; or the second resource unit includes the subcarriers with indexes of [-481:27:-22, 32:27:221]; or the second resource unit includes the subcarriers with indexes of [-466:27:-34, 20:27:236]; or the second resource unit includes the subcarriers with indexes of [-475:27:-16, 38:27:227]; or the second resource unit includes the subcarriers with indexes of [-484:27:-25, 29:27:218]; or the second resource unit includes the subcarriers with indexes of [-469:27:-37, 17:27:233]; or the second resource unit includes the subcarriers with indexes of [-478:27:-19, 35:27:224]; or the second resource unit includes the subcarriers with indexes of [-463:27:-31, 23:27:239].

[0250] In the second possible design, in the case of the fourth 20MHz preamble puncturing of the 80MHz, the first resource unit 2 can determine that the second resource unit includes subcarriers with indices of [-486:27:-27, 27:27:216], or [-471:27:-12, 42:27:231], or [-480:27:-21, 33:27:222], or [-465:27:-33, 21:27:237], or [-474:27:-15, 39:27:228], or [-483:27:-24, 30:27:219], or [-468:27:-36, 18:27:234], or [-477:27:-18, 36:27:225], or [-462:27:-30, 24:27:240].

[0251] In the third possible design, in the case of the fourth 20MHz preamble puncturing of the 80MHz, the first resource unit 3 can determine that the second resource unit includes subcarriers with indices of [-485:27:-26, 28:27:217], or [-470:27:-11, 43:27:232], or [-479:27:-20, 34:27:223], or [-464:27:-32, 22:27:238], or [-473:27:-14, 40:27:229], or [-482:27:-23, 31:27:220], or [-467:27:-35, 19:27:235], or [-476:27:-17, 37:27:226], or [-461:27:-29, 25:27:241].

[0252] In a fourth possible design, in the case of the preamble puncturing of the third 20 MHz of the 80 MHz, the second resource unit can include subcarriers with indices of [-487:27:-28, 266:27:455] according to the first resource unit 1, or [-472:27:-13, 281:27:470] according to the first resource unit 1, or [-481:27:-22, 272:27:461] according to the first resource unit 1, or [-466:27:-34, 260:27:476] according to the first resource unit 1, or [-475:27:-16, 278:27:467] according to the first resource unit 1, or [-484:27:-25, 269:27:458] according to the first resource unit 1, or [-469:27:-37, 257:27:473] according to the first resource unit 1, or [-478:27:-19, 275:27:464] according to the first resource unit 1, or [-463:27:-31, 263:27:479] according to the first resource unit 1.

[0253] In a fifth possible design, in the case of the preamble puncturing of the third 20 MHz of the 80 MHz, the second resource unit can include subcarriers with indices of [-486:27:-27, 267:27:456] according to the first resource unit 2, or [-471:27:-12, 282:27:471] according to the first resource unit 2, or [-480:27:-21, 273:27:462] according to the first resource unit 2, or [-465:27:-33, 261:27:477] according to the first resource unit 2, or [-474:27:-15, 279:27:468] according to the first resource unit 2, or [-483:27:-24, 270:27:459] according to the first resource unit 2, or [-468:27:-36, 258:27:474] according to the first resource unit 2, or [-477:27:-18, 276:27:465] according to the first resource unit 2, or [-462:27:-30, 264:27:480] according to the first resource unit 2.

[0254] In a sixth possible design, in the case of the preamble puncturing in the third 20 MHz of the 80 MHz, the second resource unit can include subcarriers with indices of [-485:27:-26, 268:27:457], or [-470:27:-11, 283:27:472], or [-479:27:-20, 274:27:463], or [-464:27:-32, 262:27:478], or [-473:27:-14, 280:27:469], or [-482:27:-23, 271:27:460], or [-467:27:-35, 259:27:475], or [-476:27:-17, 277:27:466], or [-461:27:-29, 265:27:481] according to the first resource unit 3.

[0255] In a seventh possible design, in the case of the preamble puncturing in the second 20 MHz of the 80 MHz, the second resource unit can include subcarriers with indices of [-484:27:239, 269:27:458], or [-469:27:254, 284:27:473], or [-478:27:245, 275:27:464], or [-463:27:233, 263:27:479], or [-472:27:251, 281:27:470], or [-481:27:242, 272:27:461], or [-466:27:230, 260:27:476], or [-475:27:248, 278:27:467], or [-460:27:236, 266:27:482] according to the first resource unit 1.

[0256] In an eighth possible design, in the case of the preamble puncturing of the second 20 MHz of the 80 MHz, the second resource unit can be determined according to the first resource unit 2, the second resource unit includes subcarriers with indices of [-483:27:240, 270:27:459], or [-468:27:255, 285:27:474], or [-477:27:246, 276:27:465], or [-462:27:234, 264:27:480], or [-471:27:252, 282:27:471], or [-480:27:243, 273:27:462], or [-465:27:231, 261:27:477], or [-474:27:249, 279:27:468], or [-459:27:237, 267:27:483].

[0257] In a ninth possible design, in the case of the preamble puncturing of the second 20 MHz of the 80 MHz, the second resource unit can be determined according to the first resource unit 3, the second resource unit includes subcarriers with indices of [-482:27:241, 271:27:460], or [-467:27:256, 286:27:475], or [-476:27:247, 277:27:466], or [-461:27:235, 265:27:481], or [-470:27:253, 283:27:472], or [-479:27:244, 274:27:463], or [-464:27:232, 262:27:478], or [-473:27:250, 280:27:469], or [-458:27:238, 268:27:484].

[0258] In a tenth possible design, in the case of the preamble puncturing in the first 20 MHz of the 80 MHz, the second resource unit can be determined based on the first resource unit 1 to include subcarriers with indices of [-244:27:239, 269:27:458], or [-229:27:254, 284:27:473], or [-238:27:245, 275:27:464], or [-223:27:233, 263:27:479], or [-232:27:251, 281:27:470], or [-241:27:242, 272:27:461], or [-226:27:230, 260:27:476], or [-235:27:248, 278:27:467], or [-220:27:236, 266:27:482].

[0259] In an eleventh possible design, in the case of the preamble puncturing in the first 20 MHz of the 80 MHz, the second resource unit can be determined based on the first resource unit 2 to include subcarriers with indices of [-243:27:240, 270:27:459], or [-228:27:255, 285:27:474], or [-237:27:246, 276:27:465], or [-222:27:234, 264:27:480], or [-231:27:252, 282:27:471], or [-240:27:243, 273:27:462], or [-225:27:231, 261:27:477], or [-234:27:249, 279:27:468], or [-219:27:237, 267:27:483].

[0260] In a twelfth possible design, in the case of the preamble puncturing of the first 20MHz of the 80MHz, according to the first resource unit 3, it can be determined that: the second resource unit includes subcarriers with indexes of [-242:27:241, 271:27:460]; or, the second resource unit includes subcarriers with indexes of [-227:27:256, 286:27:475]; or, the second resource unit includes subcarriers with indexes of [-236:27:247, 277:27:466]; or, the second resource unit includes subcarriers with indexes of [-221:27:235, 265:27:481]; or, the second resource unit includes subcarriers with indexes of [-230:27:253, 283:27:472]; or, the second resource unit includes subcarriers with indexes of [-239:27:244, 274:27:463]; or, the second resource unit includes subcarriers with indexes of [-224:27:232, 262:27:478]; or, the second resource unit includes subcarriers with indexes of [-233:27:250, 280:27:469]; or, the second resource unit includes subcarriers with indexes of [-218:27:238, 268:27:484].

[0261] Optionally, the second resource unit corresponding to the first resource unit can be determined according to the following manners:

[0262] In order to ensure that each second resource unit can cover a larger bandwidth, and the greatest common divisor of the intervals between adjacent subcarriers is as large as possible, the interval between the first subcarrier on the left of the direct current subcarrier and the first subcarrier on the right of the direct current subcarrier can be designed as 27, and in order to ensure that each second resource unit has the same structure, the interval between the first subcarrier on the left of the direct current subcarrier and the first subcarrier on the right of the direct current subcarrier can be designed as 54.

[0263] According to this, it can be determined that, in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, the 9 second resource units determined according to the first resource unit satisfy the following relationship:

[0264] The sum of the indexes of the 26 subcarriers of the first second resource unit and 15 is equal to the indexes of the subcarriers of the second second resource unit; or

[0265] The sum of the indexes of the 26 subcarriers of the first second resource unit and 6 is equal to the indexes of the subcarriers of the third second resource unit; or

[0266] the sum of the index of the 1st subcarrier to the i-1th subcarrier of the 1st second resource unit and 21 is equal to the index of the 1st subcarrier to the i-1th subcarrier of the 4th second resource unit; the sum of the index of the i+1th subcarrier to the 26th subcarrier of the 1st second resource unit and 21 is equal to the index of the i+1th subcarrier to the 26th subcarrier of the 4th second resource unit; the index of the i+1th subcarrier of the 4th second resource unit minus 27 is equal to the index of the ith subcarrier of the 4th second resource unit; or

[0267] the sum of the index of the 26 subcarriers of the 1st second resource unit and 12 is equal to the index of the subcarriers of the 5th second resource unit; or

[0268] the sum of the index of the 26 subcarriers of the 1st second resource unit and 3 is equal to the index of the subcarriers of the 6th second resource unit; or

[0269] the sum of the index of the 1st subcarrier to the i-1th subcarrier of the 1st second resource unit and 18 is equal to the index of the 1st subcarrier to the i-1th subcarrier of the 7th second resource unit; the sum of the index of the i+1th subcarrier to the 26th subcarrier of the 1st second resource unit and 18 is equal to the index of the i+1th subcarrier to the 26th subcarrier of the 7th second resource unit; the index of the i+1th subcarrier of the 7th second resource unit minus 27 is equal to the index of the ith subcarrier of the 7th second resource unit; or

[0270] the sum of the index of the 26 subcarriers of the 1st second resource unit and 9 is equal to the index of the subcarriers of the 8th second resource unit; or

[0271] the sum of the index of the 1st subcarrier to the i-1th subcarrier of the 1st second resource unit and 24 is equal to the index of the 1st subcarrier to the i-1th subcarrier of the 9th second resource unit; the sum of the index of the i+1th subcarrier to the 26th subcarrier of the 1st second resource unit and 24 is equal to the index of the i+1th subcarrier to the 26th subcarrier of the 9th second resource unit; the index of the i+1th subcarrier of the 9th second resource unit minus 27 is equal to the index of the ith subcarrier of the 9th second resource unit.

[0272] In addition, in the case of the fourth 20MHz preamble puncturing of the 80MHz, the first resource unit 1 is shifted right by 1 subcarrier to obtain the first resource unit 2, the first resource unit is shifted right by 2 subcarriers to obtain the first resource unit 3, and similarly, the 9 second resource units corresponding to the first resource unit 1 are shifted right by 1 subcarrier to obtain the 9 second resource units corresponding to the first resource unit 2, and the 9 second resource units corresponding to the first resource unit 1 are shifted right by 2 subcarriers to obtain the 9 second resource units corresponding to the first resource unit 3.

[0273] For example, in the case of the fourth 20MHz preamble puncturing of the 80MHz, the indexes of the 9 second resource units determined according to the first resource unit 1 can be shown in Table 15 below, the indexes of the 9 second resource units determined according to the first resource unit 2 can be shown in Table 16 below, and the indexes of the 9 second resource units determined according to the first resource unit 3 can be shown in Table 17 below:

[0274] Table 15

[0275] Table 16

[0276] Table 17

[0277] Optionally, the 9 second resource units corresponding to each 20MHz in the case of the fourth 20MHz preamble puncturing of the 80MHz can also be used to determine the 9 second resource units corresponding to each 20MHz in the case of the third 20MHz preamble puncturing of the 80MHz.

[0278] In the first possible design, the second resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz, whose indexes are greater than or equal to 12, can be shifted right by n positive integer times of subcarriers (for example, in the case of n equaling 3, shifted right by 240 subcarriers) to obtain the second resource units in the case of the third 20MHz preamble puncturing of the 80MHz.

[0279] That is, in the second resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz, the indexes of the subcarriers whose indexes are less than 12 are equal to the indexes of the subcarriers of the second resource units in the case of the third 20MHz preamble puncturing of the 80MHz, and the indexes of the subcarriers whose indexes are greater than or equal to 12 are equal to the indexes of the subcarriers of the second resource units in the case of the third 20MHz preamble puncturing of the 80MHz plus 240.

[0280] For example, in the case of the third 20MHz preamble puncturing of the 80MHz, based on the above Table 12, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 1 can be shown in the following Table 18, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 2 can be shown in the following Table 19, and the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 3 can be shown in the following Table 20:

[0281] Table 18

[0282] Table 19

[0283] Table 20

[0284] In the second possible design, the indexes of the subcarriers of the second resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz can be taken as the opposite numbers, and the opposite numbers less than or equal to -12 are shifted left by n positive integer times of subcarriers (for example, in the case of n equaling 3, shifted left by 240 subcarriers), to obtain the second resource units in the case of the second 20MHz preamble puncturing of the 80MHz.

[0285] That is, in the second resource units in the case of the fourth 20MHz preamble puncturing of the 80MHz, the indexes of the subcarriers of the second resource units in the case of the second 20MHz preamble puncturing of the 80MHz are equal to the opposite numbers greater than -12, and the indexes of the subcarriers of the second resource units in the case of the second 20MHz preamble puncturing of the 80MHz are equal to the opposite numbers less than or equal to -12 minus 240.

[0286] For example, in the case of the second 20MHz preamble puncturing of the 80MHz, based on the above Table 13, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 1 can be shown in the following Table 21, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 2 can be shown in the following Table 22, and the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 3 can be shown in the following Table 23:

[0287] Table 21

[0288] Table 22

[0289] Table 23

[0290] In a third possible design, the index of the subcarriers of the second resource unit in the case of the fourth 20 MHz of the 80 MHz with the preamble puncturing can be negated to obtain the index of the subcarriers of the second resource unit in the case of the first 20 MHz of the 80 MHz with the preamble puncturing.

[0291] That is, the negated index of the second resource unit in the case of the fourth 20 MHz of the 80 MHz with the preamble puncturing is equal to the index of the subcarriers of the second resource unit in the case of the first 20 MHz of the 80 MHz with the preamble puncturing.

[0292] For example, in the case of the first 20 MHz of the 80 MHz with the preamble puncturing, the indices of the 9 second resource units determined based on the first resource unit 1 can be shown in Table 24 below, the indices of the 9 second resource units determined based on the first resource unit 2 can be shown in Table 25 below, and the indices of the 9 second resource units determined based on the first resource unit 3 can be shown in Table 26 below.

[0293] Table 24

[0294] Table 25

[0295] Table 26

[0296] Based on the description of the second resource unit above, a third resource unit can also be determined based on the second resource unit.

[0297] where the second resource unit includes a subset of the subcarriers included in the third resource unit, the third resource unit includes 2 second resource units, and the third resource unit includes 52 subcarriers. The third resource unit can also be referred to as a 52-tone DRU.

[0298] where for the 9 second resource units (second resource unit 1 to second resource unit 9) corresponding to each first resource unit, 4 third resource units can be determined, where the third resource unit 1 includes the second resource unit 1 and the second resource unit 2, the third resource unit 2 includes the second resource unit 3 and the second resource unit 4, the third resource unit 3 includes the second resource unit 6 and the second resource unit 7, and the third resource unit 4 includes the second resource unit 8 and the second resource unit 9.

[0299] Based on the description of the third resource unit above, a fourth resource unit can also be determined based on the third resource unit.

[0300] The third resource unit includes subcarriers that are a subset of the subcarriers included in the fourth resource unit, and the fourth resource unit includes 2 third resource units and 2 single subcarriers. The fourth resource unit includes 106 subcarriers, and the fourth resource unit can also be referred to as a 106-tone DRU.

[0301] For each of the 4 third resource units (third resource unit 1 to third resource unit 4) corresponding to each 20 MHz, 2 fourth resource units can be determined, wherein the fourth resource unit 1 includes the third resource unit 1, the third resource unit 2, and 2 single subcarriers; and the fourth resource unit 2 includes the third resource unit 3, the third resource unit 4, and 2 single subcarriers.

[0302] For example, in the case of the preamble puncturing of the fourth 20 MHz of the 80 MHz, based on the above Table 11, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 1, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be as shown in the following Table 27:

[0303] Table 27

[0304] For example, in the case of the preamble puncturing of the fourth 20 MHz of the 80 MHz, based on the above Table 11, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 2, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be as shown in the following Table 28:

[0305] Table 28

[0306] For example, in the case of the preamble puncturing of the fourth 20 MHz of the 80 MHz, based on the above Table 11, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 3, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be as shown in the following Table 29:

[0307] Table 29

[0308] Exemplarily, in the case of the third 20MHz preamble puncturing of the 80MHz, based on the above Table 12, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 1, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 30:

[0309] Table 30

[0310] Exemplarily, in the case of the third 20MHz preamble puncturing of the 80MHz, based on the above Table 12, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 2, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 31:

[0311] Table 31

[0312] Exemplarily, in the case of the third 20MHz preamble puncturing of the 80MHz, based on the above Table 12, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 3, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 32:

[0313] Table 32

[0314] Exemplarily, in the case of the second 20MHz preamble puncturing of the 80MHz, based on the above Table 13, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 1, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 33:

[0315] Table 33

[0316] Exemplarily, in the case of the second 20MHz preamble puncturing of the 80MHz, based on the above Table 13, the indexes of the subcarriers of the 9 second resource units determined according to the first resource unit 2, the indexes of the 4 third resource units determined according to the 9 second resource units, and the indexes of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 34:

[0317] Table 34

[0318] For example, in the case of the preamble puncturing of the second 20MHz of the 80MHz, based on the above Table 13, the indices of the subcarriers of the 9 second resource units determined according to the first resource unit 3, and the indices of the 4 third resource units determined according to the 9 second resource units, and the indices of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 35:

[0319] Table 35

[0320] For example, in the case of the preamble puncturing of the first 20MHz of the 80MHz, based on the above Table 14, the indices of the subcarriers of the 9 second resource units determined according to the first resource unit 1, and the indices of the 4 third resource units determined according to the 9 second resource units, and the indices of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 36:

[0321] Table 36

[0322] For example, in the case of the preamble puncturing of the first 20MHz of the 80MHz, based on the above Table 14, the indices of the subcarriers of the 9 second resource units determined according to the first resource unit 2, and the indices of the 4 third resource units determined according to the 9 second resource units, and the indices of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 37:

[0323] Table 37

[0324] For example, in the case of the preamble puncturing of the first 20MHz of the 80MHz, based on the above Table 14, the indices of the subcarriers of the 9 second resource units determined according to the first resource unit 3, and the indices of the 4 third resource units determined according to the 9 second resource units, and the indices of the 2 fourth resource units determined according to the 4 third resource units can be shown as the following Table 38:

[0325] Table 38

[0326] Based on the above description of the first resource unit (242-tone DRU), the second resource unit (26-tone DRU), the third resource unit (52-tone DRU), and the fourth resource unit (106-tone DRU), the DRUs satisfy a hierarchical structure, i.e., each 242-tone DRU contains two 106-tone DRUs, each 106-tone DRU contains two 52-tone DRUs, and each 52-tone DRU contains two 26-tone DRUs, thereby simplifying the resource allocation indication.

[0327] In addition, each DRU provided by the embodiments of the present application includes non-continuous subcarriers, which can be distributed on a larger bandwidth to improve the transmission power. In the DRU, the interval between adjacent subcarriers is a positive integer multiple of 3, so the greatest common divisor of the interval between adjacent subcarriers of the DRU is 3, which can make the distribution of the subcarriers of the DRU on the bandwidth more uniform (approximately uniform distribution). When data transmission is performed using the DRU, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0328] Meanwhile, for the same type of DRU (such as a 26-tone DRU, or a 52-tone DRU, or a 106-tone DRU, or a 242-tone DRU), the DRU has the same structure, i.e., the same size of DRU, which can be obtained by shifting, flipping, or taking an opposite number of another DRU, thereby simplifying the implementation complexity and facilitating the design of the channel estimation sequence.

[0329] Different from the above-mentioned FIG. 5, the embodiments of the present application also provide another communication method, as shown in FIG. 6, which can include:

[0330] In step 601, the first communication device communicates through a second resource unit.

[0331] The second resource unit includes 26 subcarriers, and the second resource unit can also be referred to as a 26-tone DRU.

[0332] The absolute value of the difference between the indexes of adjacent subcarriers in the first i subcarriers arranged in the frequency domain order is j; the absolute value of the difference between the indexes of adjacent subcarriers in the i+1th to 26th subcarriers arranged in the frequency domain order is j; the absolute value of the difference between the indexes of the i th and i+1th subcarriers arranged in the frequency domain order is a positive integer multiple of j; and j is a positive integer greater than 1.

[0333] The index of the i-th subcarrier is less than the index of the direct current subcarrier; and the index of the i+1-th subcarrier is greater than the index of the direct current subcarrier.

[0334] For example, the value of i can be 18; or the value of i can be 17.

[0335] For example, the value of j is 27.

[0336] For example, the positive integer multiple of j is 54.

[0337] Optionally, in the case that the transmission bandwidth is 80MHz and one 20MHz preamble of the 80MHz is punctured, each 20MHz of the 80MHz includes 9 second resource units, the absolute value of the difference between the indexes of adjacent subcarriers in the 9 second resource units whose indexes are less than the index of the direct current subcarrier is 3; the absolute value of the difference between the indexes of adjacent subcarriers in the 9 second resource units whose indexes are greater than the index of the direct current subcarrier is 3; and the absolute value of the difference between the indexes of the two subcarriers adjacent to the direct current subcarrier in the 9 second resource units is 30.

[0338] In the case that the preamble of each 20MHz of the 80MHz is punctured, the specific examples of the indexes of the subcarriers included in the 9 second resource units of each 20MHz can refer to the related descriptions of the foregoing Tables 27 to 38, which will not be described herein.

[0339] Optionally, the subcarriers corresponding to the second resource units can be determined based on the following manner:

[0340] In order to ensure that each second resource unit can cover a larger bandwidth and the greatest common divisor of the intervals between adjacent subcarriers is as large as possible, the interval between the first subcarrier on the left of the direct current subcarrier and the first subcarrier on the right of the direct current subcarrier can be designed as 27; and in order to ensure that each second resource unit has the same structure, the interval between the first subcarrier on the left of the direct current subcarrier and the first subcarrier on the right of the direct current subcarrier can be designed as 54.

[0341] Based on this, it can be determined that, in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the 9 second resource units included in each 20MHz satisfy the following relationship:

[0342] The sum of the indexes of the 26 subcarriers of the first second resource unit and 15 is equal to the index of the subcarrier of the second second resource unit; or

[0343] The sum of the indexes of the 26 subcarriers of the first second resource unit and 6 is equal to the index of the subcarrier of the third second resource unit; or

[0344] the sum of the index of the 1st to the i-1st subcarriers of the 1st second resource unit and 21 is equal to the index of the 1st to the i-1st subcarriers of the 4th second resource unit; the sum of the index of the i+1st to the 26th subcarriers of the 1st second resource unit and 21 is equal to the index of the i+1st to the 26th subcarriers of the 4th second resource unit; the index of the i+1st subcarrier of the 4th second resource unit minus 27 is equal to the index of the i-th subcarrier of the 4th second resource unit; or

[0345] the sum of the index of the 26th subcarriers of the 1st second resource unit and 12 is equal to the index of the subcarriers of the 5th second resource unit; or

[0346] the sum of the index of the 26th subcarriers of the 1st second resource unit and 3 is equal to the index of the subcarriers of the 6th second resource unit; or

[0347] the sum of the index of the 1st to the i-1st subcarriers of the 1st second resource unit and 18 is equal to the index of the 1st to the i-1st subcarriers of the 7th second resource unit; the sum of the index of the i+1st to the 26th subcarriers of the 1st second resource unit and 18 is equal to the index of the i+1st to the 26th subcarriers of the 7th second resource unit; the index of the i+1st subcarrier of the 7th second resource unit minus 27 is equal to the index of the i-th subcarrier of the 7th second resource unit; or

[0348] the sum of the index of the 26th subcarriers of the 1st second resource unit and 9 is equal to the index of the subcarriers of the 8th second resource unit; or

[0349] the sum of the index of the 1st to the i-1st subcarriers of the 1st second resource unit and 24 is equal to the index of the 1st to the i-1st subcarriers of the 9th second resource unit; the sum of the index of the i+1st to the 26th subcarriers of the 1st second resource unit and 24 is equal to the index of the i+1st to the 26th subcarriers of the 9th second resource unit; the index of the i+1st subcarrier of the 9th second resource unit minus 27 is equal to the index of the i-th subcarrier of the 9th second resource unit.

[0350] In addition, in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, the subcarriers of the 9 second resource units included in the first 20MHz can be shifted right by 1 subcarrier to obtain the 9 second resource units corresponding to the second 20MHz, and the subcarriers of the 9 second resource units included in the first 20MHz can be shifted right by 2 subcarriers to obtain the 9 second resource units corresponding to the third 20MHz.

[0351] In the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble, the description of the indexes of the subcarriers included in the 9 second resource units corresponding to each 20 MHz can refer to the related description of Tables 27 to 38, which will not be repeated here.

[0352] Optionally, the 9 second resource units corresponding to each 20 MHz in the case that the other 20 MHz of the 80 MHz is punctured by the preamble can also be determined according to the 9 second resource units corresponding to each 20 MHz in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble.

[0353] In the first possible design, the second resource units in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble can be shifted right by n positive integer times of subcarriers (for example, 240 subcarriers in the case that n is equal to 3) to obtain the second resource units in the case that the third 20 MHz of the 80 MHz is punctured by the preamble.

[0354] That is, the indexes of the subcarriers with indexes less than 12 in the second resource units in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble are equal to the indexes of the subcarriers in the second resource units in the case that the third 20 MHz of the 80 MHz is punctured by the preamble; and the indexes of the subcarriers with indexes greater than or equal to 12 in the second resource units in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble are equal to the indexes of the subcarriers in the second resource units in the case that the third 20 MHz of the 80 MHz is punctured by the preamble plus 240.

[0355] In the second possible design, the indexes of the subcarriers in the second resource units in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble can be taken as the opposite numbers, and the opposite numbers less than or equal to -12 are shifted left by n positive integer times of subcarriers (for example, 240 subcarriers in the case that n is equal to 3) to obtain the second resource units in the case that the second 20 MHz of the 80 MHz is punctured by the preamble.

[0356] That is, the opposite numbers greater than -12 of the indexes of the subcarriers in the second resource units in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble are equal to the indexes of the subcarriers in the second resource units in the case that the second 20 MHz of the 80 MHz is punctured by the preamble; and the opposite numbers less than or equal to -12 of the indexes of the subcarriers in the second resource units in the case that the fourth 20 MHz of the 80 MHz is punctured by the preamble are equal to the indexes of the subcarriers in the second resource units in the case that the second 20 MHz of the 80 MHz is punctured by the preamble minus 240.

[0357] In a third possible design, the index of the subcarriers of the second resource unit in the case of the fourth 20 MHz preamble puncturing of the 80 MHz can be negated to obtain the index of the subcarriers of the second resource unit in the case of the first 20 MHz preamble puncturing of the 80 MHz.

[0358] In other words, the negated index of the second resource unit in the case of the fourth 20 MHz preamble puncturing of the 80 MHz is equal to the index of the second resource unit in the case of the first 20 MHz preamble puncturing of the 80 MHz.

[0359] Based on the description of the second resource unit, a third resource unit can also be determined based on the second resource unit.

[0360] The second resource unit includes a subset of the subcarriers included in the third resource unit, the third resource unit includes two second resource units, and the third resource unit includes 52 subcarriers. The third resource unit can also be referred to as a 52-tone DRU.

[0361] For each 20 MHz, 9 second resource units (second resource unit 1 to second resource unit 9) can be determined, and 4 third resource units can be determined. The third resource unit 1 includes the second resource unit 1 and the second resource unit 2, the third resource unit 2 includes the second resource unit 3 and the second resource unit 4, the third resource unit 3 includes the second resource unit 6 and the second resource unit 7, and the third resource unit 4 includes the second resource unit 8 and the second resource unit 9.

[0362] Based on the description of the third resource unit, a fourth resource unit can also be determined based on the third resource unit.

[0363] The third resource unit includes a subset of the subcarriers included in the fourth resource unit, the fourth resource unit includes two third resource units and two single subcarriers, and the fourth resource unit includes 106 subcarriers. The fourth resource unit can also be referred to as a 106-tone DRU.

[0364] For each 20 MHz, 4 third resource units (third resource unit 1 to third resource unit 4) can be determined, and 2 fourth resource units can be determined. The fourth resource unit 1 includes the third resource unit 1, the third resource unit 2, and two single subcarriers. The fourth resource unit 2 includes the third resource unit 3, the third resource unit 4, and two single subcarriers.

[0365] Based on the description of the fourth resource unit, a first resource unit can also be determined based on the fourth resource unit.

[0366] The fourth resource unit includes a subset of the subcarriers included in the first resource unit, the first resource unit includes two fourth resource units, one second resource unit, and four single subcarriers.

[0367] For example, each 20MHz includes one first resource unit, which includes a fourth resource unit, a fourth resource unit 2, a second resource unit 5, and four single subcarriers.

[0368] For example, in the case of the preamble puncturing of each 20MHz of 80MHz, taking the first 20MHz as an example, the indexes of the subcarriers of the nine second resource units corresponding to each 20MHz, the indexes of the four third resource units determined according to the nine second resource units, the indexes of the two fourth resource units determined according to the four third resource units, and the indexes of the one second resource unit and the two fourth resource units can be shown in Tables 27 to 38 as described above, which are not repeated here.

[0369] Based on the above description of the first resource unit (242-tone DRU), the second resource unit (26-tone DRU), the third resource unit (52-tone DRU), and the fourth resource unit (106-tone DRU), the DRU satisfies the inheritance structure, that is, each 242-tone DRU contains two 106-tone DRUs, each 106-tone DRU contains two 52-tone DRUs, and each 52-tone DRU contains two 26-tone DRUs, thereby simplifying the resource allocation indication.

[0370] In addition, each DRU provided by the embodiments of the present application includes non-continuous subcarriers, which can be distributed on a larger bandwidth to improve the transmission power. In the DRU, the interval between adjacent subcarriers is a positive integer multiple of 3, so the greatest common divisor of the interval between adjacent subcarriers of the DRU is 3, which can make the distribution of the subcarriers of the DRU on the bandwidth more uniform (approximately uniform distribution). When using the DRU for data transmission, the average value of the PAPR of the data can be reduced, the nonlinear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0371] Meanwhile, for the same type of DRU (such as 26-tone DRU, or 52-tone DRU, or 106-tone DRU, or 242-tone DRU), which has the same structure, that is, the same size of DRU, it can be obtained by another DRU through translation, flipping or taking the opposite number, etc., thereby simplifying the complexity of implementation and facilitating the design of channel estimation sequence.

[0372] Different from the method in FIG. 5 or FIG. 6, the embodiment of the present application further provides another communication method, as shown in FIG. 7, which can include the following steps.

[0373] In step 701, the first communication device communicates through a third resource unit.

[0374] The third resource unit includes 52 subcarriers, and the third resource unit can also be referred to as a 52-tone DRU.

[0375] In the 52 subcarriers, the absolute value of the difference between the indices of two adjacent subcarriers is a positive integer multiple of p, and p is a positive integer greater than 1.

[0376] For example, the value of p can be 3.

[0377] Optionally, in the 52 subcarriers, the absolute value of the difference between the indices of the qth subcarrier and the (q+1)th subcarrier arranged in the frequency domain order is 15, the absolute value of the difference between the indices of the (q+1)th subcarrier and the (q+2)th subcarrier arranged in the frequency domain order is 12, and q is an odd number.

[0378] Optionally, in the 52 subcarriers, the absolute value of the difference between the indices of the qth subcarrier and the (q+1)th subcarrier arranged in the frequency domain order is 15, the absolute value of the difference between the indices of the (q+1)th subcarrier and the (q+2)th subcarrier arranged in the frequency domain order is 12, or the absolute value of the difference between the indices of the qth subcarrier and the (q+1)th subcarrier arranged in the frequency domain order is 12, the absolute value of the difference between the indices of the (q+1)th subcarrier and the (q+2)th subcarrier arranged in the frequency domain order is 15, and q is an odd number.

[0379] Optionally, in the 52 subcarriers, the absolute value of the difference between the indices of two subcarriers adjacent to the DC subcarrier is 42 or 39.

[0380] Optionally, in the 52 subcarriers, the number of subcarriers with indices greater than that of the DC subcarrier is 36 or 35.

[0381] Optionally, in the case that the transmission bandwidth is 80 MHz and one 20 MHz preamble of the 80 MHz is punctured, each 20 MHz of the 80 MHz includes four third resource units, and in the four third resource units, the absolute value of the difference between the indices of adjacent subcarriers is a positive integer multiple of p.

[0382] In the case that the preamble of each 20 MHz of the 80 MHz is punctured, the specific examples of the indices of the subcarriers included in the four third resource units of each 20 MHz can refer to the related descriptions of the foregoing tables 27 to 38, and will not be described here.

[0383] Optionally, the third resource unit corresponding to the subcarrier can be determined based on the following manner:

[0384] In order to ensure that each third resource unit can cover a larger bandwidth, and the interval between adjacent subcarriers is as large as possible, the interval between the subcarrier on the left of the direct current subcarrier and the subcarrier on the right of the direct current subcarrier can be designed as 15 or 12, in order to ensure that each third resource unit has the same structure, the interval between the first subcarrier on the left of the direct current subcarrier and the first subcarrier on the right of the direct current subcarrier can be designed as 42 or 39.

[0385] In addition, in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, the subcarriers of the four third resource units included in the first 20MHz can be shifted right by one subcarrier to obtain the four third resource units corresponding to the second 20MHz, and the subcarriers of the four third resource units included in the first 20MHz can be shifted right by two subcarriers to obtain the four third resource units corresponding to the third 20MHz.

[0386] Optionally, the four third resource units corresponding to each 20MHz in the case of the preamble puncturing of the other 20MHz of the 80MHz can also be determined according to the four third resource units corresponding to each 20MHz in the case of the preamble puncturing of the fourth 20MHz of the 80MHz.

[0387] In the first possible design, the subcarriers with an index greater than or equal to 12 in the third resource unit in the case of the preamble puncturing of the fourth 20MHz of the 80MHz can be shifted right by n positive integer times of subcarriers (for example, in the case of n equaling 3, shifted right by 240 subcarriers) to obtain the third resource unit in the case of the preamble puncturing of the third 20MHz of the 80MHz.

[0388] That is, in the third resource unit in the case of the preamble puncturing of the fourth 20MHz of the 80MHz, the index of the subcarrier with an index less than 12 is equal to the index of the subcarrier of the third resource unit in the case of the preamble puncturing of the third 20MHz of the 80MHz, and the index of the subcarrier with an index greater than or equal to 12 plus the value of 240 is equal to the index of the subcarrier of the third resource unit in the case of the preamble puncturing of the third 20MHz of the 80MHz.

[0389] In the second possible design, the index of the subcarrier of the third resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz can be taken as the opposite number, and the opposite number less than or equal to -12 is left shifted by n positive integer times (for example, in the case of n equal to 3, left shifted by 240 subcarriers), to obtain the index of the subcarrier of the third resource unit in the case of the second 20MHz preamble puncturing of the 80MHz.

[0390] That is, in the third resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz, the opposite number greater than -12 is equal to the index of the subcarrier of the third resource unit in the case of the second 20MHz preamble puncturing of the 80MHz, and the opposite number less than or equal to -12 is equal to the index of the subcarrier of the third resource unit in the case of the second 20MHz preamble puncturing of the 80MHz minus 240.

[0391] In the third possible design, the index of the subcarrier of the third resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz can be taken as the opposite number, to obtain the index of the subcarrier of the third resource unit in the case of the first 20MHz preamble puncturing of the 80MHz.

[0392] That is, in the third resource unit in the case of the fourth 20MHz preamble puncturing of the 80MHz, the opposite number is equal to the index of the subcarrier of the third resource unit in the case of the first 20MHz preamble puncturing of the 80MHz.

[0393] Based on the above description of the third resource unit, the second resource unit can also be determined according to the third resource unit.

[0394] The third resource unit includes two second resource units, and each second resource unit includes 26 subcarriers. The second resource unit can also be referred to as a 26-tone DRU.

[0395] For each 20MHz corresponding to four third resource units (third resource unit 1 to third resource unit 4), eight third resource units can be determined, wherein the third resource unit 1 includes the second resource unit 1 and the second resource unit 2, the third resource unit 2 includes the second resource unit 3 and the second resource unit 4, the third resource unit 3 includes the second resource unit 6 and the second resource unit 7, and the third resource unit 4 includes the second resource unit 8 and the second resource unit 9. Each 20MHz can also include a second resource unit 5.

[0396] Based on the above description of the third resource unit, the fourth resource unit can also be determined according to the third resource unit.

[0397] The third resource unit includes subcarriers that are a subset of the subcarriers included in the fourth resource unit, and the fourth resource unit includes two third resource units and two single subcarriers. The fourth resource unit includes 106 subcarriers, and the fourth resource unit can also be referred to as a 106-tone DRU.

[0398] For each 20 MHz corresponding to the four third resource units (third resource unit 1 to third resource unit 4), two fourth resource units can be determined, where the fourth resource unit 1 includes the third resource unit 1, the third resource unit 2, and two single subcarriers, and the fourth resource unit 2 includes the third resource unit 3, the third resource unit 4, and two single subcarriers.

[0399] Based on the above description of the fourth resource unit, the first resource unit can also be determined according to the fourth resource unit.

[0400] The fourth resource unit includes subcarriers that are a subset of the subcarriers included in the first resource unit, and the first resource unit includes two fourth resource units, one second resource unit, and four single subcarriers.

[0401] For example, each 20 MHz includes one first resource unit, which includes the fourth resource unit 1, the fourth resource unit 2, the second resource unit 5, and four single subcarriers.

[0402] For example, in the case of 80 MHz preamble puncturing of each 20 MHz, the index of the four third resource units corresponding to each 20 MHz, the index of the nine second resource units, and the index of the two fourth resource units determined according to the four third resource units, and the index of the one second resource unit and the two fourth resource units can be as shown in Tables 27 to 38 above, which will not be repeated here.

[0403] Based on the above description of the first resource unit (242-tone DRU), the second resource unit (26-tone DRU), the third resource unit (52-tone DRU), and the fourth resource unit (106-tone DRU), the DRU satisfies the inheritance structure, that is, each 242-tone DRU includes two 106-tone DRUs, each 106-tone DRU includes two 52-tone DRUs, and each 52-tone DRU includes two 26-tone DRUs, thereby simplifying the resource allocation indication.

[0404] In addition, each DRU provided by the embodiment of the present application includes discontinuous subcarriers, which can be distributed on a larger bandwidth to improve transmission power. In the DRU, the interval between adjacent subcarriers is a positive integer multiple of 3, so the greatest common divisor of the interval between adjacent subcarriers of the DRU is 3, which can make the distribution of the subcarriers of the DRU on the bandwidth more uniform (approximately uniform distribution), and when data transmission is performed using the DRU, the average value of the PAPR of the data can be reduced, nonlinear distortion can be avoided as much as possible, and power amplifier efficiency can be improved.

[0405] Meanwhile, for the same type of DRU (such as a 26-tone DRU, or a 52-tone DRU, or a 106-tone DRU, or a 242-tone DRU), which has the same structure, that is, the same size of DRU, can be obtained by another DRU through translation, flipping or taking the opposite number and the like, thereby simplifying the complexity of implementation and facilitating the design of channel estimation sequence.

[0406] Different from the above-mentioned FIG. 5 or FIG. 6 or FIG. 7, the embodiment of the present application also provides another communication method, as shown in FIG. 8, which can include:

[0407] In step 801, the first communication device communicates through a fourth resource unit.

[0408] The fourth resource unit includes 106 subcarriers, and the fourth resource unit can also be referred to as a 106-tone DRU.

[0409] In the 106 subcarriers, the absolute value of the difference between the indexes of adjacent two subcarriers is a positive integer multiple of p, and p is a positive integer greater than 1.

[0410] For example, the value of p can be 3.

[0411] Optionally, in the 106 subcarriers, the number of subcarriers with indexes greater than the index of the direct current subcarrier is 72 or 70.

[0412] Optionally, in the case that the transmission bandwidth is 80MHz and one 20MHz preamble of 80MHz is punctured, each 20MHz of 80MHz includes two fourth resource units, and in the two fourth resource units, the absolute value of the difference between the indexes of adjacent subcarriers is a positive integer multiple of p.

[0413] In the case that the preamble of each 20MHz of 80MHz is punctured, the specific examples of the indexes of the subcarriers included in the two fourth resource units included in each 20MHz can refer to the related description of the foregoing tables 27 to 38, which will not be described here.

[0414] Optionally, the fourth resource unit corresponding to the subcarrier can be determined based on the following manner:

[0415] Each fourth resource unit can cover a larger bandwidth, and the common divisor of the interval between adjacent subcarriers is as large as possible.

[0416] In addition, in the case of the fourth 20MHz preamble puncturing of 80MHz, the subcarriers of the two fourth resource units included in the first 20MHz can be shifted right by 1 subcarrier to obtain the two fourth resource units corresponding to the second 20MHz, and the subcarriers of the two fourth resource units included in the first 20MHz can be shifted right by 2 subcarriers to obtain the two fourth resource units corresponding to the third 20MHz.

[0417] Optionally, the two fourth resource units corresponding to each 20MHz in the case of the fourth 20MHz preamble puncturing of 80MHz can also be used to determine the two fourth resource units corresponding to each 20MHz in the case of the preamble puncturing of other 20MHz of 80MHz.

[0418] In the first possible design, the subcarriers with an index greater than or equal to 12 in the fourth resource unit in the case of the fourth 20MHz preamble puncturing of 80MHz can be shifted right by n positive integer times of subcarriers (for example, in the case of n equaling 3, shifted right by 240 subcarriers) to obtain the fourth resource unit in the case of the third 20MHz preamble puncturing of 80MHz.

[0419] That is, in the fourth resource unit in the case of the fourth 20MHz preamble puncturing of 80MHz, the index of the subcarrier with an index less than 12 is equal to the index of the subcarrier of the fourth resource unit in the case of the third 20MHz preamble puncturing of 80MHz, and the index of the subcarrier with an index greater than or equal to 12 plus 240 is equal to the index of the subcarrier of the fourth resource unit in the case of the third 20MHz preamble puncturing of 80MHz.

[0420] In the second possible design, the index of the subcarrier of the fourth resource unit in the case of the fourth 20MHz preamble puncturing of 80MHz can be taken as an opposite number, and the opposite number less than or equal to -12 is shifted left by n positive integer times of subcarriers (for example, in the case of n equaling 3, shifted left by 240 subcarriers) to obtain the fourth resource unit in the case of the second 20MHz preamble puncturing of 80MHz.

[0421] In the fourth resource unit in the case of the fourth 20MHz of the 80MHz being punctured by the preamble, the index of the subcarrier of the fourth resource unit in the case of the second 20MHz of the 80MHz being punctured by the preamble is equal to the index of the subcarrier of the fourth resource unit in the case of the first 20MHz of the 80MHz being punctured by the preamble, and the index of the subcarrier of the fourth resource unit in the case of the second 20MHz of the 80MHz being punctured by the preamble is equal to the index of the subcarrier of the fourth resource unit in the case of the first 20MHz of the 80MHz being punctured by the preamble minus 240.

[0422] In the third possible design, the index of the subcarrier of the fourth resource unit in the case of the fourth 20MHz of the 80MHz being punctured by the preamble can be taken the opposite number to obtain the index of the subcarrier of the fourth resource unit in the case of the first 20MHz of the 80MHz being punctured by the preamble.

[0423] In the fourth possible design, the index of the subcarrier of the fourth resource unit in the case of the fourth 20MHz of the 80MHz being punctured by the preamble is equal to the index of the subcarrier of the fourth resource unit in the case of the first 20MHz of the 80MHz being punctured by the preamble.

[0424] Based on the above description of the fourth resource unit, optionally, the third resource unit can also be determined according to the fourth resource unit.

[0425] The fourth resource unit includes two third resource units. The third resource unit includes 52 subcarriers, and the third resource unit can also be referred to as a 52-tone DRU.

[0426] For the two fourth resource units (the fourth resource unit 1 and the fourth resource unit 2) corresponding to each 20MHz, four third resource units can be determined, wherein the fourth resource unit 1 includes the third resource unit 1 and the third resource unit 2; and the fourth resource unit 2 includes the third resource unit 3 and the third resource unit 4.

[0427] Based on the above description of the third resource unit, optionally, the second resource unit can also be determined according to the third resource unit.

[0428] The third resource unit includes two second resource units, and the second resource unit includes 26 subcarriers. The second resource unit can also be referred to as a 26-tone DRU.

[0429] The 8 third resource units can be determined for each 20MHz corresponding to 4 third resource units (third resource unit 1 to third resource unit 4), wherein the third resource unit 1 comprises the second resource unit 1 and the second resource unit 2, the third resource unit 2 comprises the second resource unit 3 and the second resource unit 4, the third resource unit 3 comprises the second resource unit 6 and the second resource unit 7, and the third resource unit 4 comprises the second resource unit 8 and the second resource unit 9. Each 20MHz can further comprise a second resource unit 5.

[0430] Based on the above description of the fourth resource unit, the first resource unit can also be determined according to the fourth resource unit.

[0431] The fourth resource unit comprises a subset of the subcarriers comprised in the first resource unit, the first resource unit comprises 2 fourth resource units, 1 second resource unit, and 4 single subcarriers.

[0432] For example, each 20MHz comprises a first resource unit comprising a fourth resource unit 1, a fourth resource unit 2, a second resource unit 5, and 4 single subcarriers.

[0433] For example, in the case of preamble puncturing in each 20MHz of 80MHz, the index of the 2 fourth resource units, the index of the 4 third resource units, the index of the 9 second resource units, and the index of the first resource unit corresponding to each 20MHz can be shown in the above Tables 27 to 38, which are not described herein.

[0434] Based on the above description of the first resource unit (242-tone DRU), the second resource unit (26-tone DRU), the third resource unit (52-tone DRU), and the fourth resource unit (106-tone DRU), the DRUs satisfy an inheritance structure, i.e., each 242-tone DRU comprises two 106-tone DRUs, each 106-tone DRU comprises two 52-tone DRUs, and each 52-tone DRU comprises two 26-tone DRUs, thereby simplifying the resource allocation indication.

[0435] In addition, each DRU provided by the embodiments of the present application comprises discontinuous subcarriers, which can be distributed on a larger bandwidth to improve the transmission power. In the DRU, the interval between adjacent subcarriers is a positive integer multiple of 3, so the greatest common divisor of the interval between adjacent subcarriers of the DRU is 3, which can make the distribution of the subcarriers of the DRU on the bandwidth more uniform (approximately uniform distribution). When the DRU is used for data transmission, the average value of the PAPR of the data can be reduced, non-linear distortion can be avoided as much as possible, and the power amplifier efficiency can be improved.

[0436] Meanwhile, for the same type of DRU (such as a 26-tone DRU, or a 52-tone DRU, or a 106-tone DRU, or a 242-tone DRU), which has the same structure, i.e., the same size of DRU, can be obtained by another DRU in the form of translation, flip or opposite, etc., thereby simplifying the complexity of implementation and facilitating the design of channel estimation sequence.

[0437] Based on the above description of the 26-tone DRU, the 52-tone DRU, the 106-tone DRU, and the 242-tone DRU, in order to compare the influence of different DRU designs on PAPR, 100,000 groups of random BPSK data and QPSK data are randomly generated for each DRU size, the distribution of PAPR is counted, and the complementary cumulative distribution function (CCDF) under different schemes is compared. The complementary cumulative distribution function F(x) is a continuous function, which represents the sum of the probabilities of all values greater than x, i.e., F(x) = P(X > x). From the simulation comparison results shown in FIGS. 9 to 12, compared with the DRU whose maximum common divisor of the interval between adjacent subcarriers is 1, and compared with the continuous RU, the embodiments of the present application have smaller average PAPR in all different DRU sizes.

[0438] It can be understood that in the embodiments of the present application, the indexes of the DRUs (such as the first resource unit, or the second resource unit, or the third resource unit, or the fourth resource unit) of the same size can be exchanged with each other, and are not limited.

[0439] In addition, in the actual communication process, the above-mentioned part of the DRU can be used, and not all DRUs are used.

[0440] In addition, based on the above description of the first resource unit, the second resource unit, the third resource unit, and the fourth resource unit in the embodiments shown in FIGS. 5 to 12, the indexes of the subcarriers included in the fourth resource unit can also be adjusted to make the distance between the indexes of the adjacent subcarriers of the fourth resource unit satisfy the fixed regular repetition as much as possible, for example, the distance between the indexes of the adjacent subcarriers is repeated periodically with [6 6 6 9] as the period, thereby reducing the complexity of processing at the receiving end.

[0441] For example, in the case of the preamble puncturing of the last 20MHz of the 80MHz, the index of the fourth resource unit subcarrier shown in Table 27 above can be adjusted from -490 to -493, and the index of the fourth resource unit subcarrier can be adjusted from 14 to 251. The index of the fourth resource unit shown in Table 28 above can be adjusted from -489 to -492, and the index of the fourth resource unit subcarrier can be adjusted from 15 to 252. The index of the fourth resource unit subcarrier shown in Table 29 above can be adjusted from -488 to -491, and the index of the fourth resource unit subcarrier can be adjusted from 16 to 253. That is, Table 27 above can be adjusted to Table 39 below, Table 28 above can be adjusted to Table 40 below, and Table 29 above can be adjusted to Table 41 below:

[0442] Table 39

[0443] Table 40

[0444] Table 41

[0445] Based on the above description, the first resource unit, the second resource unit, the third resource unit, and the fourth resource unit can be determined based on the following description.

[0446] For the second resource unit, the second resource unit can include 2 discrete pilot subcarriers.

[0447] In the case of the preamble puncturing of the 20MHz in the 80MHz, the pilot subcarriers of each second resource unit can be determined based on the principle that the position distribution of the 54 pilot subcarriers corresponding to the 27 second resource units of the 80MHz is approximately uniform, so as to improve the accuracy of the pilot phase tracking.

[0448] For example, a set of subcarriers with an index less than 0 in the 80MHz can be referred to as a negative frequency band, and a set of subcarriers with an index greater than 0 in the 80MHz can be referred to as a positive frequency band. For the negative frequency band, a subcarrier can be selected as a pilot subcarrier every Y subcarriers starting from a certain subcarrier (e.g., the first subcarrier), so that the position distribution of the pilot subcarriers of the negative frequency band is uniform, and the accuracy of the pilot phase tracking is improved. For the positive frequency band, a subcarrier can be selected as a pilot subcarrier every Z subcarriers starting from a certain subcarrier (e.g., the second subcarrier), so that the position distribution of the pilot subcarriers of the positive frequency band is uniform, and the accuracy of the pilot phase tracking is improved. Optionally, Y and Z can be equal, so that the position distribution of the pilot subcarriers corresponding to the 80MHz is approximately uniform, and the accuracy of the pilot phase tracking is improved.

[0449] Optionally, for the second resource unit, the pilot subcarriers of each second resource unit can also be determined based on the principle that the distance between the pilot subcarriers of the second resource unit is large enough to ensure the diversity in phase tracking, in addition to the above principles.

[0450] Based on the above two principles, for example, in the case of preamble puncturing in the last 20MHz of 80MHz, the index of the first subcarrier can be -450, the index of the second subcarrier can be 49, and Y and Z can both be 11. Based on this, for the negative frequency band, a subcarrier with an index of -450 can be selected as a pilot subcarrier, and then every 11 subcarriers can be selected as a pilot subcarrier, and thus the indices of the pilot subcarriers on the negative frequency band are: {-450:11:-43}. Similarly, for the positive frequency band, a subcarrier with an index of 49 can be selected as a pilot subcarrier, and then every 11 subcarriers can be selected as a pilot subcarrier, and thus the indices of the pilot subcarriers on the positive frequency band are: {49:11:214}. Thus, there are two pilot subcarriers on each second resource unit.

[0451] Based on the above example description of the indices of the subcarriers included in each second resource unit, it can be understood that, in the case of preamble puncturing in the last 20MHz of 80MHz, the indices of the pilot subcarriers of the second resource unit can be {-406, -109}, or {-175, 203}, or {-373, -76}, or {-439, -142}, or {-340, -43}, or {-241, 137}, or {-307, 71}, or {-208, 170}, or {-274, 104}, or {-351, -54}, or {-417, -120}, or {-318, 60}, or {-384, -87}, or {-285, 93}, or {-186, 192}, or {-252, 126}, or {-450, -153}, or {-219, 159}, or {-296, 82}, or {-362, -65}, or {-263, 115}, or {-329, 49}, or {-230, 148}, or {-428, -131}, or {-197, 181}, or {-395, -98}, or {-164, 214}.

[0452] For the third resource unit, the third resource unit can include 4 discrete pilot subcarriers.

[0453] In a first possible implementation, the pilot subcarriers of each third resource unit can be determined based on the principle that the positions of the 48 pilot subcarriers corresponding to the 12 third resource units of the 80MHz are approximately uniformly distributed, so as to improve the accuracy of the pilot phase tracking. Alternatively, the pilot subcarriers of each third resource unit can also be determined based on the principle that the spacing between the pilot subcarriers of the third resource unit is large enough, so as to ensure the diversity of the third resource unit in phase tracking.

[0454] In a second possible implementation, based on the foregoing description, since each third resource unit corresponds to 2 second resource units, the 4 pilot subcarriers of each third resource unit can be the set of pilot subcarriers of the 2 second resource units corresponding thereto. Based on this, the positions of the 48 pilot subcarriers corresponding to the 12 third resource units of the 80MHz are approximately uniformly distributed, which can improve the accuracy of the pilot phase tracking. In addition, the spacing between the pilot subcarriers of the third resource unit can also be large enough, so as to ensure the diversity of the third resource unit in phase tracking.

[0455] Based on the two possible implementations described above, for example, based on the foregoing example description of the indexes of the subcarriers included in each third resource unit, in the case of preamble puncturing of the last 20MHz of the 80MHz, the indexes of the pilot subcarriers of the third resource unit can be {-406, -175, -109, 203}, or {-439, -373, -142, -76}, or {-307, -241, 71, 137}, or {-274, -208, 104, 170}, or {-417, -351, -120, -54}, or {-384, -318, -87, 60}, or {-252, -186, 126, 192}, or {-450, -219, -153, 159}, or {-362, -296, -65, 82}, or {-329, -263, 49, 115}, or {-428, -197, -131, 181}, or {-395, -164, -98, 214}.

[0456] For the fourth resource unit, the fourth resource unit can include 4 discrete pilot subcarriers.

[0457] In a first possible implementation, the pilot subcarriers of each fourth resource unit can be determined based on the principle that the positions of the 24 pilot subcarriers corresponding to the 6 fourth resource units corresponding to the 80MHz are approximately uniformly distributed, according to the principle described above for determining the pilot subcarriers of the second resource units, so as to improve the accuracy of the pilot phase tracking. Alternatively, the pilot subcarriers of each fourth resource unit can be determined based on the principle that the spacing between the pilot subcarriers of the fourth resource units is large enough, so as to ensure the diversity of the fourth resource units in phase tracking.

[0458] In a second possible implementation, based on the foregoing description, since each fourth resource unit corresponds to 2 third resource units, the 4 pilot subcarriers of each fourth resource unit can be any 4 pilot subcarriers of the 8 pilot subcarriers of the 2 third resource units corresponding thereto. Alternatively, the 4 pilot subcarriers of the fourth resource unit can be 4 pilot subcarriers of the 8 pilot subcarriers that are approximately uniformly distributed. Based on this, the positions of the 24 pilot subcarriers corresponding to the 6 fourth resource units corresponding to the 80MHz are approximately uniformly distributed, which can improve the accuracy of the pilot phase tracking. In addition, the spacing between the pilot subcarriers of the fourth resource units can be large enough, so as to ensure the diversity of the fourth resource units in phase tracking.

[0459] Based on the two possible implementations described above, for example, based on the example description of the indices of the subcarriers included in each fourth resource unit described above, in the case of preamble puncturing of the last 20MHz of the 80MHz, the indices of the pilot subcarriers of the fourth resource unit can be {-373, -175, -109, 203}, or {-307, -241, 71, 137}, or {-384, -318, -120, 60}, or {-252, -186, 126, 192}, or {-329, -263, 49, 115}, or {-395, -197, -131, 181}.

[0460] For the first resource units, the first resource units can include 8 pilot subcarriers.

[0461] In a first possible implementation, the pilot subcarriers of each first resource unit can be determined based on the principle that the positions of the 24 pilot subcarriers corresponding to the 3 first resource units corresponding to the 80MHz are approximately uniformly distributed, according to the principle described above for determining the pilot subcarriers of the second resource units, so as to improve the accuracy of the pilot phase tracking. Alternatively, the pilot subcarriers of each first resource unit can be determined based on the principle that the spacing between the pilot subcarriers of the first resource units is large enough, so as to ensure the diversity of the first resource units in phase tracking.

[0462] In the second possible implementation, based on the foregoing description, since each first resource unit corresponds to 2 fourth resource units, the 8 pilot subcarriers of each first resource unit can be the set of pilot subcarriers of the corresponding 2 fourth resource units. Based on this, the position distribution of the 24 pilot subcarriers corresponding to the 3 first resource units of the 80MHz is approximately uniform, which can improve the accuracy of pilot phase tracking. In addition, it can also ensure that the spacing between the pilot subcarriers of the first resource unit is large enough to ensure its diversity in phase tracking.

[0463] Optionally, when determining the pilot subcarriers of the first resource unit based on the pilot subcarriers of the fourth resource unit, the pilot subcarriers of the fourth resource unit can also be adjusted so that the indexes of the pilot subcarriers of the first resource unit determined based on the pilot subcarriers of the fourth resource unit satisfy a fixed pattern, such as that the index of the pilot subcarriers of any first resource unit can obtain the index of the pilot subcarriers of any other first resource unit after being shifted (for example, shifted by 11 subcarriers or an integer multiple of 11 subcarriers), thereby reducing the complexity of frequency domain channel smoothing processing.

[0464] Based on the above two possible implementations, for example, based on the above example description of the indexes of the subcarriers included in each first resource unit, in the case of preamble puncturing of the last 20MHz of the 80MHz, the indexes of the pilot subcarriers of the first resource unit can be {-373, -307, -241, -175, -109, 71, 137, 203}, or {-384, -318, -252, -186, -120, 60, 126, 192}, or {-395, -329, -263, -197, -131, 49, 115, 181}.

[0465] In the above examples, the indexes of the pilot subcarriers of other first resource units can be obtained by shifting the indexes of the pilot subcarriers of the first resource unit by 11 subcarriers or an integer multiple of 11 subcarriers. Or it can also be described as: in the xth pilot subcarrier of the 3 first resource units, the absolute value of the difference between the indexes of any two pilot subcarriers is an integer multiple of 11, x=x=1, 2, …, 8.

[0466] For example, taking the 1st pilot subcarrier (i.e., x=1) of the 3 first resource units as an example, the pilot subcarrier with an index of -373 can be shifted left by 11 subcarriers to obtain a pilot subcarrier with an index of -384. The pilot subcarrier with an index of -373 can be shifted left by 22 subcarriers to obtain a pilot subcarrier with an index of -395.

[0467] It should be noted that each of the embodiments of the present application can be implemented independently, or in combination, without limitation. If not specifically stated and there is no logical conflict, the terms and / or descriptions provided in different embodiments of the present application are consistent and can be mutually referred to. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0468] It can be understood that, in the embodiments of the present application, the execution subject can execute part or all of the steps in the embodiments of the present application, and these steps or operations are only examples. The embodiments of the present application can also execute other operations or variations of various operations. In addition, each step can be executed in a different order as presented in the embodiments of the present application, and it is possible that not all operations in the embodiments of the present application are executed.

[0469] The above mainly introduces the scheme provided by the embodiments of the present application from the perspective of interaction between devices. It can be understood that, in order to realize the above functions, each device comprises a hardware structure and / or a software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0470] The embodiments of the present application can divide the functional modules of each device according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated in one processing module. The above integrated module can be realized in the form of hardware or software functional module. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical functional division. Actual implementation can have another division manner.

[0471] In the case of dividing each functional module according to each function, FIG. 13 shows a communication apparatus 130 which can execute the actions performed by the first communication apparatus in the methods shown in FIGS. 5 to 12. All related contents of each step involved in the above method embodiments can be referred to the functional description of the corresponding functional module, and the technical effects that can be obtained are referred to the above method embodiments, which will not be described here again.

[0472] The communication apparatus 130 can include a transmitting module 1301 and a processing module 1302. For example, the communication apparatus 130 can be a communication device, or a chip or other combination device or component having the above-mentioned transmitting device function applied in the communication device.

[0473] When the communication apparatus 130 is a communication device, the transmitting module 1301 can be a transceiver, and the processing module 1302 can be a processor (or processing circuit), for example, a baseband processor, which can include one or more CPUs.

[0474] When the communication apparatus 130 is a component having the above-mentioned transmitting device function, the transmitting module 1301 can be a radio frequency unit, and the processing module 1302 can be a processor (or processing circuit), for example, a baseband processor.

[0475] When the communication apparatus 130 is a chip system, the transmitting module 1301 can be an input / output interface of a chip (for example, a baseband chip), and the processing module 1302 can be a processor (or processing circuit) of the chip system, which can include one or more central processing units.

[0476] It should be understood that the transmitting module 1301 in the embodiments of the present application can be implemented by a transceiver or a transceiver-related circuit component, and the processing module 1302 can be implemented by a processor or a processor-related circuit component (or processing circuit).

[0477] For example, the transmitting module 1301 can be configured to perform all the transmission operations performed by the first communication apparatus in the embodiments shown in FIGS. 5 to 12, and / or other processes for supporting the techniques described herein; and the processing module 1302 is configured to control the transmitting module 1301 to perform all the transmission operations performed by the first communication apparatus in the embodiments shown in FIGS. 5 to 12, and / or other processes for supporting the techniques described herein.

[0478] As another implementation manner, the transmitting module 1301 in FIG. 13 can be replaced by a transceiver which can integrate the functions of the transmitting module 1301, and the processing module 1302 can be replaced by a processor which can integrate the functions of the processing module 1302. Further, the communication apparatus 130 shown in FIG. 13 can further include a memory.

[0479] Alternatively, when the processing module 1302 is replaced by a processor and the transmitting module 1301 is replaced by a transceiver, the communication apparatus 130 involved in the embodiments of the present application can also be the communication apparatus 140 shown in FIG. 14. Wherein, the processor can be a logic circuit 1401, and the transceiver can be an interface circuit 1402. Further, the communication apparatus 140 shown in FIG. 14 can further include a memory 1403.

[0480] The embodiment of the present application further provides a computer program product, which can realize the functions of any of the method embodiments above when executed by a computer.

[0481] The embodiment of the present application further provides a computer program, which can realize the functions of any of the method embodiments above when executed by a computer.

[0482] The embodiment of the present application further provides a computer readable storage medium. All or part of the flow of the method embodiments above can be instructed by a computer program to relevant hardware to complete, the program can be stored in the computer readable storage medium, and the program can include the flow of the method embodiments above when executed. The computer readable storage medium can be an internal storage unit of the terminal (including the data sending terminal and / or the data receiving terminal) of any of the preceding embodiments, for example, a hard disk or a memory of the terminal. The computer readable storage medium can also be an external storage device of the terminal, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card and the like. Further, the computer readable storage medium can include both the internal storage unit and the external storage device of the terminal. The computer readable storage medium is used to store the computer program and other programs and data required by the terminal. The computer readable storage medium can also be used to temporarily store data that has been output or will be output.

[0483] It should be noted that the terms "first" and "second" and the like in the specification of the present application, claims and drawings are used to distinguish different objects, and are not used to describe a specific order. "First", "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present embodiment, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0484] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0485] It should be understood that in the present application, "at least one" means one or more. "Multiple" means two or more. "At least two" means two or three and more. "And / or" is used to describe the relationship between the associated objects, which means that there can be three relationships. For example, "A and / or B" can mean that there are three cases: only A, only B, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple. "When" and "if" both mean that under certain objective circumstances, the corresponding processing will be done, not limited to time, and does not require a judgment action when implemented, nor does it mean that there are other limitations.

[0486] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean an example, illustration, or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplary" or "for example" are intended to present the relevant concept in a specific manner for understanding.

[0487] In the present application, "sending information to (a terminal device)" can be understood as that the destination of the information is the terminal device. It can include directly or indirectly sending information to the terminal device. "Receiving information from (a terminal device)" can be understood as that the source of the information is the terminal device, and it can include directly or indirectly receiving information from the terminal device. The information can be processed as necessary between the source and the destination of the information transmission, such as format change, etc., but the destination can understand the valid information from the source.

[0488] Through the description of the above embodiments, those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional modules is taken as an example. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0489] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are merely illustrative, for example, the division of the modules or units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another apparatus, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, apparatuses or units, and can be electrical, mechanical or other forms.

[0490] The units described as separate components can or can not be physically separated, and the components shown as units can be one physical unit or a plurality of physical units, that is, can be located in one place or can be distributed to a plurality of different places. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0491] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0492] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a readable storage medium. Based on such understanding, the technical scheme of the embodiment of the present application can be embodied in the form of a software product in essence or all or part of the technical scheme. The software product is stored in a storage medium and includes a plurality of instructions for causing an apparatus (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk and various program code storage media.

Claims

A communication method characterized by comprising: The method comprises: communicating through a first resource unit; wherein the first resource unit comprises 242 subcarriers; in the 242 subcarriers, the absolute value of the difference between the indexes of adjacent subcarriers in the 1st to the mth subcarriers arranged in the frequency domain order is n, wherein n is a positive integer greater than 1; in the 242 subcarriers, the absolute value of the difference between the indexes of adjacent subcarriers in the (m+1)th to the 242nd subcarriers arranged in the frequency domain order is n; the absolute value of the difference between the indexes of the mth and the (m+1)th subcarriers arranged in the frequency domain order in the 242 subcarriers is a positive integer multiple of n. According to the method of claim 1, wherein the index of the mth subcarrier is less than the index of the direct current subcarrier; the index of the (m+1)th subcarrier is greater than the index of the direct current subcarrier. According to the method of claim 1 or 2, wherein the value of m is 162. According to the method of any one of claims 1-3, wherein the value of n is 3. According to the method of any one of claims 1-4, wherein the positive integer multiple of n is 27; or the positive integer multiple of n is 267. According to the method of any one of claims 1-5, wherein in the case that the preamble of one 20MHz of the 80MHz is punctured, the 80MHz comprises 3 first resource units; the xth subcarrier of the 3 first resource units is continuous; x=1, 2, …, 242. According to the method of claim 6, wherein in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the positive integer multiple of n is 27. According to the method of claim 7, wherein the indexes of the subcarriers included in the first resource unit are: [-496:3:-13, 14:3:251]; or the indexes of the subcarriers included in the first resource unit are: [-495:3:-12, 15:3:252]; or the indexes of the subcarriers included in the first resource unit are: [-494:3:-11, 16:3:253]. According to the method of any one of claims 6-8, wherein in the case that the preamble of the third 20MHz of the 80MHz is punctured, the positive integer multiple of n is 267. According to the method of claim 9, wherein the indexes of the subcarriers included in the first resource unit are: [-496:3:-13, 254:3:491]; or the indexes of the subcarriers included in the first resource unit are: [-495:3:-12, 255:3:492]; or the indexes of the subcarriers included in the first resource unit are: [-494:3:-11, 256:3:493]. According to the method of any one of claims 6-10, wherein in the case that the preamble of the second 20MHz of the 80MHz is punctured, the positive integer multiple of n is 267. The method of claim 11, wherein, the first resource unit comprises subcarriers with indices [-493:3:-256, 11:3:494]; or the first resource unit comprises subcarriers with indices [-492:3:-255, 12:3:495]; or the first resource unit comprises subcarriers with indices [-491:3:-254, 13:3:496]. The method of any of claims 6-12, wherein, in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-253:3:-16, 11:3:494]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-252:3:-15, 12:3:495]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-251:3:-14, 13:3:496]. The method of any of claims 6-14, wherein, in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-253:3:-16, 11:3:494]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-252:3:-15, 12:3:495]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-251:3:-14, 13:3:496]. The method of any of claims 6-15, wherein, in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-253:3:-16, 11:3:494]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-252:3:-15, 12:3:495]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-251:3:-14, 13:3:496]. The method of any of claims 6-16, wherein, in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-253:3:-16, 11:3:494]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-252:3:-15, 12:3:495]; or in the case that the preamble of the fourth 20MHz of the 80MHz is punctured, the first resource unit comprises subcarriers with indices [-251:3:-14, 13:3:496]. The method of any of claims 1-17, wherein, in the case that the preamble of one 20MHz of the 80MHz is punctured, the 80MHz comprises 3 first resource units, each of the third resource units comprising 8 pilot subcarriers; in the xth pilot subcarrier of the 3 first resource units, the absolute value of the difference between the indices of any two pilot subcarriers is a positive integer multiple of 11, x = 1, 2, …, 8. ​ The method of claim 18, wherein the first resource unit comprises pilot subcarriers with indices of {-373, -307, -241, -175, -109, 71, 137, 203}; or the first resource unit comprises pilot subcarriers with indices of {-384, -318, -252, -186, -120, 60, 126, 192}; or the first resource unit comprises pilot subcarriers with indices of {-395, -329, -263, -197, -131, 49, 115, 181}. A communication device, characterized by A computer program product comprising instructions for performing the method of any of claims 1-19. A communication device, characterized by A computer program product comprising instructions for performing the method of any of claims 1-19. A computer-readable storage medium, characterized by A computer program product comprising instructions for performing the method of any of claims 1-19. A computer program, characterized in that A computer program product comprising instructions for performing the method of any of claims 1-19.

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