Communication devices and methods

Abstract

First communication device configured to communicate with one or more second communication devices, the first communication device comprising circuitry configured to select at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units; allocate one or more resource units of the selected tone plan to the one or more second communication devices; notify the one or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmit data to and / or receive data from the one or more second communication devices on the respectively allocated one or more resource units.

Description

COMMUNICATION DEVICES AND METHODSBACKGROUNDFIELD OF THE DISCLOSURE

[0001] The present disclosure relates to first and second communication devices that are configured to communicate with each other.DESCRIPTION OF RELATED ART

[0002] In communication systems, in particular for wireless communication, the transmission bandwidth is often organized by resource units (RUs) of different size. These RUs are defined by a continuous block of tones (e.g., OFDM subcarriers). For long-range or high-reli- ability operations, it is desired to reduce bandwidth or the number of tones of a RU toenhance transmit power per bandwidth or per tone while keeping average power same. However, due to regulatory bodies defining a limit on spectral power density, the enhancement of transmit power of a RUs is limited.

[0003] The “background” description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventor(s), to the extent it is described in this background section, as well as aspects of the description which may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.SUMMARY

[0004] It is an object to enable the transmission of RUs at higher transmit power. It is a further object to provide corresponding communication devices and methods as well as a corresponding computer program and a non-transitory computer-readable recording medium for implementing said communication methods.

[0005] According to an aspect there is provided a first communication device configured to communicate with one or more second communication devices, the first communication device comprising circuitry configured to: select at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units; allocate one or more resource units of the selected tone plan to the one or more second communication devices; notify the one or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmit data to and / or receive data from the one or more second communication devices on the respectively allocated one or more resource units.

[0006] According to a further aspect there is provided a second communication device configured to communicate with a first communication device, the second communication device comprising circuitry configured to: receive a notification of a selected tone plan, the tone plan comprising an allocation of non-contiguous tones to two or more resource units, and an allocation of a resource unit allocated to the second communication device; and transmit data to and / or receive data from the first communication device on the allocated resource unit.

[0007] According to still further aspects a computer program comprising program means for causing a computer to carry out the steps of the communication methods disclosed herein, when said computer program is carried out on a computer, as well as a non-transi- tory computer-readable recording medium that stores therein a computer program product, which, when executed by a processor, causes the communication methods disclosed herein to be performed are provided.

[0008] Embodiments are defined in the dependent claims. It shall be understood that the disclosed communication methods, the disclosed computer program and the disclosed computer-readable recording medium have similar and / or identical further embodiments as the claimed communication devices and as defined in the dependent claims and / or disclosed herein.

[0009] One of the aspects of the disclosure is to define and use RUs comprising non-contiguous tones, herein also called distributed RUs (dRUs), to distinguish them from conventional (regular) RUs (rRUs). Those dRUs can be transmitted at higher power because they fulfill a criterion on power spectral density. Tone plans are provided for selection by the first communication device and use by both communication devices, in particular for 20, 40 and 80 MHz, as well as fractions of it which are optimal in the sense that they maximize the transmit power enhancement when reducing the bandwidth. In preferred embodiments dRUs and rRUs may be used at same time.

[0010] The foregoing paragraphs have been provided by way of general introduction and are not intended to limit the scope of the following claims. The described embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWING

[0011] A more complete appreciation of the disclosure and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:Fig. 1 shows the different regular resource units of WLAN for 20 MHz, 40 MHz and 80 MHz.Fig. 2 shows a diagram illustrating maximum total transmit power and maximum spectral power density and their effect on the transmit power per tone as a function of bandwidth.Fig. 3 schematically illustrates a tone plan of two dRUs of equal size.Fig. 4 shows a diagram of an exemplary process for obtaining a tone plan for a bandwidth of 20 MHz.Fig. 5 shows a diagram of an exemplary process of a splitting operation from an originating dRU (e.g. of 20 MHz) into two parts.Fig. 6 shows the splitting levels of a dRU for 20 MHz.Fig. 7 showing a diagram illustrating bandwidth extension for an originating bandwidth of 20 MHz or 40 MHz resulting in 40 MHz or 80 MHz, respectively.Fig. 8 shows a diagram of an exemplary process for obtaining a tone plan for a bandwidth of 40 MHz.Fig. 9 shows a diagram of an exemplary process of a splitting operation from an originating dRU (e.g. of 40 MHz) into two parts.Fig. 10 shows the splitting levels of a dRU for 40 MHz.Fig. 11 shows a diagram of an exemplary process for obtaining a tone plan for a bandwidth of 80 MHz.Fig. 12 shows a diagram of an exemplary process of a splitting operation from an originating dRU (of e.g. 80 MHz) into two parts.Fig. 13 shows the splitting levels of a dRU for 80 MHz.Fig. 14 shows a diagram illustrating the multiplex of two dRUs and one rRUFig. 15 shows a diagram illustrating the multiplex of one dRU and three rRU.Fig. 16 shows a diagram of a communication system including a first communication device and a second communication device.Fig. 17 shows a flow chart of an embodiment of a first communication method.Fig. 18 shows a flow chart of an embodiment of a second communication method.Fig. 19 shows a diagram illustrating an exemplary tone plan for a first level of 20 MHz bandwidth.Fig. 20 shows a diagram illustrating an exemplary tone plan for a second level of 20 MHz bandwidth.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, Fig. 1 shows the different regular resource units (rRUs) of WLAN for 20 MHz (Fig. 1A), 40 MHz (Fig. 1B) and 80 MHz (Fig. 1C). There are guard carriers, null subcarriers, and data subcarriers. It shall be noted in this context that the terms “subcarriers”, “carriers” and “tones” are equivalently used herein and shall be understood as meaning the same.

[0013] In a downlink transmission, i.e. , a transmission from an access point (AP) to one or more stations (STAs), the data for each STA may be contained in an RU. For example, different data to two STAs can be multiplexed in downlink in two 106 tone RUs. Similarly, in uplink transmission, i.e., transmission from one or more STAs to an AP, each STA puts its data to be transmitted on a distinct RU. Since the transmit data is contained in different RUs the data is multiplexed in frequency and can be retrieved without mutual interference.

[0014] Regulatory bodies define two limits: a maximum total transmit power (dBm) and a maximum spectral power density (dBm / MHz). Assuming a device just transmits a single rRU, the less tones an rRU has, the higher the spectral power density can be while maintaining the total transmit power. Thus, if a rRU gets small, the maximum spectral power density is a limiting factor; hence, transmit power is less than the maximum total transmit power.

[0015] Fig. 2 shows a diagram illustrating both limits (maximum total transmit power and maximum spectral power density) and their effect on the transmit power per tone as a function of bandwidth. As can be seen, the transmit power per tone is limited by the spectral density constraint for a bandwidth lower or equal to 20 MHz. In contrast, the dRUs according to the proposed tone plans can achieve higher transmit power per tone, depending on distributed RU (dRU) size, compared to rRU.

[0016] A dRU as disclosed herein has tones distributed over the entire bandwidth; hence, a dRU spans the entire bandwidth but with lower density compared to a rRU. Since a dRU has less tones per MHz compared to a rRU, the maximum power spectral density limit is less limiting compared to a rRU. Fig. 3 schematically illustrates a tone plan of two dRUs of equal size. The tones of the two dRUs are alternately distributed over the whole bandwidth, wherein DC tones (e.g. zero tones) are arranged in the center and guard tones (e.g. zero tones) are arranged at both ends.

[0017] The implementation of a dRU tone plan as disclosed herein, which may be used in WLAN systems in accordance with IEEE 802.11 , shall meet one or more of the following criteria: i. The number of tones of a dRU and rRU may be same so that an existing PHY (physical) layer can be reused, i.e., a difference between dRU and rRU lies in the tone mapping. ii. Guard bands and DC tones of dRU and rRU may be the same so that requirements to the RF frontend are unchanged. iii. dRUs from different users may be multiplexable, i.e., several dRUs can be transmitted at the same time either from one user (e.g. in a downlink scenario, in which an AP to transmits to one or more STAs) or to different users (e.g. in an uplink scenario, in which one or more STAs transmit to an AP). iv. The tone distance of two neighboring tones of a dRU may be maximized so that the power spectral density is the least dense. v. The minimum tone distance of a dRU, regardless where it occurs, may not be below a certain value, since the spectral power density constraint shall be met at any frequency. Consequently, if a total of N usable tones is available, a dRU tone plan can have a maximum of N / 2 tones.

[0018] A tone plan represents an allocation of tones to resource units. As illustrated in Fig. 3, a tone plan has tone indices from -N / 2 ... 0 ... N / 2-1, where N is the FFT size of the OFDM modulator being used. In preferred embodiments, it holds N = 256, 512 or 1024 for 20, 40 or 80 MHz bandwidth, respectively. A tone plan defines the tones that are active during a transmission, i.e., they are modulated with a non-zero value. Consequently, a tone plan defines tones for data tones and pilot tones. Data tones carry user data, whereas pilot tones are used for channel estimation and / or channel tracking purposes. The placementof pilot tones in a dRU is not the subject of the present disclosure and will not be addressed herein.

[0019] In the following, different embodiments of tone plans are defined by addressing the positive space of tone indices only, i.e., 0 ... N / 2-1. The negative part can be obtained by “mirroring at DC” or equivalently by multiplying the tone indices from 1 ... N / 2-1 with -1 and the tone at -N / 2 is zero. The positive space of tone indices is further reduced by zero tones at the lower indices (around zero) and at the upper indices (around N / 2-1), also referred to as DC tones or guard tones herein. The exact number of zeros in each location depends on implementation constraints and / or bandwidth. In the following, the set of available tones is referred to as the positive space of tone indices minus the zero tones at lower and higher indices.

[0020] For a bandwidth of 20 MHz, the positive indices of an exemplary tone plan for two dRUs of size 106 tones and one dRU with 26 tones may be obtained as shown in Fig. 4 illustrating an embodiment of a corresponding process 10. In a first step 11, 13 tone indices with a minimum distance of 9 tones are taken from the set of available tone indices to obtain the positive tones of the 26 tone dRU A with arbitrary index of the lowest tone of said 13 tones. Subsequently, in step 12 the tone index out of the remaining available tone indices are alternated for the first 106 tone dRU B with a tone index for the second 106 tone dRU C for 53 times to obtain the positive indices of the first and second 106 tone dRU, which are then inserted in between the tones of the 26 tone dRU in step 13. The remaining tone indices (leftover tones) are set to zero and may be placed at arbitrary position in step 14.

[0021] Within the 20 MHz, each dRU of the initial dRU tone set (i.e., the set spanning the 20 MHz bandwidth) may be further subdivided in another embodiment by the following approach to obtain the positive indices of smaller dRUs. Hereby, it shall be noted that only dRUs of a size larger than 26 tones can be split, i.e., one or both of the two 106 tone dRUs. The splitting of a dRU into two smaller dRUs may be done as shown in Fig. 5 illustrating an embodiment of a corresponding process 20 of a splitting operation from an originating dRU into two parts (dRU p1 or dRU p2 in Fig. 5). The first small dRU p1 is obtained in step 21 by taking every second tone from the originating dRU tone plan starting with the first tone of the originating dRU. The second small dRU p2 is obtained in step 22 by takingevery second tone from the originating dRU tone plan starting with the second tone of the originating dRU. If the target size (e.g. 52 tones or 26 tones) of a small dRU is less than half the size of the originating dRU, any leftover tones may be set to zero in step 23.

[0022] The operations described above with reference to Fig. 5 may be successively applied, meaning that a new originating dRU can be a small (subdivided) dRU from a previous operation as long as the small or subdivided dRU is larger than 26 tones.

[0023] In another embodiment only a subset of the initial dRU tone set may be further subdivided. It is therefore possible to have one originating dRU split into two dRUs and keep the other originating dRUs unchanged. In other words, a mixture of splitting levels is possible as illustrated in Fig. 6 showing the splitting levels of a dRU for 20 MHz. For example, it is possible to have a 106 tone dRU, a 26 tone dRU, and two 52 tone dRU (the latter being obtained by subdivision of a 106 tone dRU). The splitting operation “106 -> 52+52” is therefore carried out just once, not twice as shown in Fig. 6. In this context, the term “level” is meant to indicate how often the alternating allocation of subsets of tones to two or more resource units has been applied.

[0024] Two exemplary implementations for the different splitting operations shown in Fig. 6 may be as follows. In a first implementation two 52 tone dRUs are created from a 106 tone dRU. A first 52 tone dRU is obtained from a 106 tone dRU by taking every second tone of the 106 tone dRU starting with a first tone index of the said 106 tone dRU and one tone of every second tone of the 106 tone dRU being zero, and a second 52 tone dRU is obtained from the same 106 tone dRU by taking every other second tone of the 106 tone dRU and one tone of every other second tone of the 106 tone dRU being zero. In a second implementation two 26 tone dRUs are created from a 52 tone dRU. A first 26 tone dRU is obtained from a 52 tone dRU by taking every second tone of the 52 tone dRU starting with a first tone index of said 52 tone dRU, and a second 26 tone dRU is obtained from the same 52 tone dRU by taking every other second tone of the 52 tone dRU.

[0025] For the extension for larger bandwidths, such as 40 MHz and 80 MHz, there are at least two options. According to a first option a 20 MHz tone plan is re-used as illustrated in Fig.7 showing bandwidth extension for an originating bandwidth of 20 MHz or 40 MHz resulting in 40 MHz or 80 MHz, respectively. The tone plan 30 is defined by tone indices in two groups 31 , 32, wherein the first group 31 has positive tone indices, and the second group 32 has negative tone indices. The entire tone plan 33 for 20 MHz 140 MHz is taken as the first group 31 of the 40 MHz 180 MHz and another entire tone plan 33 for 20 MHz 140 MHz is taken as the second group 32 of the 40 MHz 180 MHz, such that symmetry to DC is maintained. Optionally, tone indices with zero tones at former DC locations of the 20 Hz / 40 MHz may be removed from the original tone plan 34 to obtain the tone plan 33 such that minimum distance is kept. Remaining tones (leftover tones) are preferably filled with zeros. An advantage of this first option is simple implementation and the possibility of multiplexing with rRU, as illustrated later below. However, although the bandwidth is increased, the minimum distance of dRUs stays unchanged; hence, the gain of dRU is limited and the same as in 20 MHz or 40 MHz, respectively.

[0026] According to a second option, a specific tone plan is defined explained in the following for a dedicated dRU tone plan for 40 MHz and 80 MHz as well as the subdivision of those dRU tone plans. An advantage of this second option is that the minimum distance of dRU increases (i.e., doubles with doubled bandwidth), but it requires a more complex implementation and a multiplex with rRU is not possible.

[0027] For a bandwidth of 40 MHz, the positive indices of an exemplary tone plan for two dRUs of size 242 tones may be obtained as shown in Fig. 8 illustrating an embodiment of a corresponding process 40. In a first step 41 , the tone index for the first 242 tone dRU A with a tone for the second 242 tone dRU B is alternated for 121 times starting from a start index larger zero. The remaining tone indices (leftover tones) are filled with zero in step 42.

[0028] Within the 40 MHz bandwidth, each dRU of the initial dRU tone set (i.e., the set spanning the 40 MHz bandwidth) can be further subdivided, e.g. by the following approach, to obtain the positive indices of smaller dRUs. One or both of the two 242 tone dRUs can be split. In an embodiment, the splitting of a dRU into two smaller dRUs may be done as follows, which is shown in Fig. 9 illustrating an embodiment of the process 50 of the splitting operation for a 40 MHz dRU tone plan. In a first step 51 , the first small dRU (dRU p1 in Fig. 9) is obtained by taking every 9thtone from the originating dRU for 13 times startingwith a tone of the originating dRU. In a second step 52, out of the remaining tones of the originating dRU, the second small dRU (dRU p2 in Fig. 9) and third small dRU (dRU p3 in Fig. 9) are obtained as follows. The second small dRU p2 is obtained by taking every second tone from the remaining tones of the originating dRU starting with the first tone of the remaining originating dRU. The third small dRU p3 is obtained by taking every second tone from the remaining tones of the originating dRU starting with the second tone of the remaining originating dRU. The first and second small dRUs are then inserted into the remaining tones of the originating dRU in step 53. If the size of any small dRU is reached and the remaining originating dRU is non-empty, any leftover tones are set to zero in step 54.

[0029] This splitting operation, which creates two 106 tone and one 26 tone RUs, may be followed in an embodiment by the subdividing process of the 20 MHz as described above with the dRU p2 and / or dRU p3 being the initial dRU tone set on which the subdividing is applied. Further, in an embodiment, only a subset of the initial dRU tone set may be further subdivided as illustrated in Fig. 10 showing the splitting levels of a dRU for 40 MHz.

[0030] For a bandwidth of 80 MHz, the positive indices of an exemplary tone plan for two dRUs of size 484 tones and one dRU of size 26 tones may be obtained as shown in Fig. 11 illustrating an embodiment of a corresponding process 60. In a first step 61 , 13 tone indices with a minimum distance of 36 or more tones are taken from the set of available tone indices to obtain the 26 tone dRU A with arbitrary index of the lowest tone of said 13 tones. Subsequently, in step 62, the tone index out of the remaining available tone indices is alternated for the first 484 tone dRU B with a tone for the second 484 tone dRU C for 242 times starting from a start index larger zero, which are then inserted in between the tones of the 26 tone dRU in step 63. Remaining tone indices are filled with zero in step 64.

[0031] Within the 80 MHz bandwidth, each dRU of the initial dRU tone set (i.e., the set spanning the 80 MHz bandwidth) may be further subdivided by the following approach to obtain the positive indices of smaller dRUs. Only dRUs of size larger than 26 tones may be split, i.e., one or both of the two 484 tone dRUs. The splitting of a dRU into two smaller dRU may be done as shown in Fig. 12 illustrating an embodiment of the splitting operation 70 from an originating dRU into two parts (dRU p1 or dRU p2 in Fig. 12). In a first step 71 , the firstsmall dRU p1 is obtained by taking every second tone from the originating dRU starting with the first tone of the originating dRU. In a second step 72, the second small dRU p2 is obtained by taking every second tone from the originating dRU starting with the second tone of the originating dRU. If the size of the small dRU is less than half the size of the originating dRU, any leftover tone may be set to zero in step 73.

[0032] The above splitting operation, which creates two 242 tone RUs, can be followed by the subdividing process of the 40 MHz as described above with dRU p1 or dRU p2 being the initial dRU tone set. Only a subset of the initial dRU tone set may be further subdivided as shown in Fig. 13 showing the splitting levels of dRU for 80 MHz.

[0033] Leftover tones may appear if the number of available tones is lower than the sum of all dRUs within the bandwidth. Those leftover tones are different to DC tones or guard tones which are imposed by system limitations. There are different options of inserting leftover tones in a tone plan. Insertion means that all tone plans of a bandwidth are affected, i.e., inserting a leftover tone at the smallest non-zero tone shifts all other tone indices by one.

[0034] One option of inserting leftover tones is to insert one or more zero leftover tones, i.e., a zero tone that is unused for data communication and / or channel estimation, in a tone plan to transition from odd indices of a dRU tone plan to even indices and vice versa. For example, two 242 dRUs for 40 MHz bandwidth may have the following tones: dRU1 = [4, 6, 8, 10, 12, 14, 16 ,18, 20, 22, 24, 26, 28, 30 ...] dRU2 = [5, 7, 9, 11 , 13, 15, 17, 19, 21 , 23, 25, 27, 29, 31 ...]Now inserting a zero tone at index 16 and 29 gives dRU1 = [4, 6, 8, 10, 12, 14, 17, 19, 21 , 23, 25, 27, 30, 32 ...] dRU2 = [5, 7, 9, 11 , 13, 15, 18, 20, 22, 24, 26, 28, 31 , 33 ...]Thus, every 6 tones of a dRU odd indices change to even and vice versa. This may be used for pilot placement, as it is preferred to have pilots on even tone indices. In certain embodiments, each dRU may have a need for pilots.

[0035] Another option of inserting leftover tones is to insert zero leftover tones in a tone plan to maintain the minimum distance requirement after the “mirroring at DC” operation. Thepositive indices of tone plan as follows [4, 20, 36, 52, 68, 84, ...] have a distance of 16 tones. However, after the mirroring operation the tone index 4 gets mirrored to -4, resulting in a minimum distance of 9. If zero leftover tones are inserted at indices 4, 5, 6, 7, the tone plan gets [8, 24, 40, 56, 72, 88] and the distance between the tone index 8 and -8 is 17, i.e., it does not deteriorate the minimum distance of 16.

[0036] According to another embodiment, starting from 40 MHz bandwidth, a multiplex of one or more dRUs and one or more rRUs may be done. Hence, the tone plan contains both regular and distributed RUs. In this case, the following steps may be carried out as shown in Fig. 14 illustrating the multiplex of two dRUs and one rRU.

[0037] The 40 Hz tone plan for a rRU 80 is partitioned into a first group 81 and a second group 82, the first group 81 containing only positive indices and the second group 82 containing only negative indices. The entire tone plan of a 20 MHz dRU 83 is set as a first group 81 (not shown in Fig. 14) or a second group 82 (shown in Fig. 14). Optionally, zeros are removed at former DC locations of 20 Hz of the dRU 84 to make the tone plan symmetric in the dRU 83 inserted into the dRU group 82. The rRU 81 is shown as one block i.e., one rRU, but it may contain multiple rRUs (i.e. it may be subdivided from a large rRU) for example as shown in Fig. 1.

[0038] Similarly, in another embodiment a multiplex within an 80 MHz bandwidth may be done by performing the above steps with an 80 MHz tone plan for rRU and an entire 40 MHz dRU plan. The 80 MHz tone plan for a multiplexed RU 90 is partitioned blockwise into four groups 91 , 92, 93, 94 of equal size, of which two have negative and another two have positive indices. In at least one group (group 93 in Fig. 15) the entire tone plan of a 20 MHz dRU 95 is inserted. Optionally, zeros are removed at former DC locations of 20 MHz of the dRU 96 to make the tone plan symmetric in the dRU 95 inserted into the dRU group 93. Both rRUs 91 , 92 (for positive indices) may be combined to one rRU according to the rRU tone plan for 80 MHz. The index N in Figs. 14 and 15 may be different.

[0039] Fig. 16 shows a diagram of a scenario in which the present disclosure may be applied. It shows particularly a communication system including a first communication device 100(which in an embodiment may be an AP) according to an aspect of the present disclosure for communicating with one (or more) second communication device(s) 200 (which in an embodiment may be a STA). The first communication device 100 is generally able to communicate with the second communication device(s) 200, e.g. to exchange (receive and / or transmit) data with the second communication device(s) 200. While only one STAs is shown in Fig. 16, in other embodiments of the communication system there may be more STAs.

[0040] Each of the communication devices 100, 200 comprises circuitry 101 , 201 that is configured to perform particular operations. The circuitries may be implemented by a respective processor or computer, i.e., as hardware and / or software, or by dedicated units or components. For instance, respectively programmed processors may represent the respective circuitries 101, 201.

[0041] Fig. 17 shows a flow chart of an embodiment of a first communication method 300 of the first communication device 100 according to the present disclosure, which may be performed by the circuitry 101. In a first step 301 the first communication device 100 selects at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units. In a second step 302 the first communication device 100 allocates one or more resource units of the selected tone plan to the one or more second communication devices 200. In a third step 303 the first communication device 100 notifies the one or more second communication devices 200 of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device 200. In a fourth step 304 the first communication device 100 transmits data to and / or receives data from the one or more second communication devices 200 on the respectively allocated one or more resource units.

[0042] Fig. 18 shows a flow chart of an embodiment of a second communication method 400 of the second communication device 200 according to the present disclosure, which may be performed by the circuitry 201. In a first step 401 the second communication device 200 receives a notification of a selected tone plan, the tone plan comprising an allocation of non-contiguous tones to two or more resource units, and an allocation of a resource unitallocated to the second communication device 200. In a second step 402 the second communication device 200 transmits data to and / or receives data from the first communication device 100 on the allocated resource unit.

[0043] In an exemplary embodiment, in uplink one or more STAs transmit to an AP. An operation of the AP in uplink may be configured as follows. In the first step 301 , the AP selects a tone plan, e.g., depending on how many STAs would like to transmit in uplink and their data rate requirement and desired transmit power boost (meaning how much power a STA can transmit more compared to a regular (block) RU). These requirements may be obtained by a buffer status report previously transmitted by each STA to the AP. For example, in a system using 20 MHz bandwidth, it may choose 106 tones + 26 tones + 52 tones + 52 tones to address a maximum of four STAs.

[0044] In the second step 302, the AP allocates dRUs to STAs and defines their transmission parameters (e.g. MCS, etc.). Some RUs may stay unallocated (i.e. empty). For example, the AP allocates a 106 tone dRU to STA 1 , a 26 tone dRU is empty, a 52 tone dRU to STA 2 and the other 52 tone dRU to STA 3.

[0045] In the third step 303, the tone plan selection and dRU allocation is sent to STAs via a trigger frame. A defined time gap later, the STAs respond (to the trigger frame) on their allocated dRUs. Tones not belonging to a dRU are not modulated by a STA (i.e. zero power). For example, STA 1 modulates with the MCS defined in the trigger frame only the tones of the 106 tone dRU.

[0046] In another exemplary embodiment, in downlink, one AP transmits to one or more STAs. An operation of the AP in downlink may be configured as follows. In the first step 301 , the AP selects a tone plan (e.g. depending on how many STAs would like to receive data in downlink and their data rate requirement and desired transmit power boost. These requirements may be obtained by observing the current queue status at AP. For example, in 20 MHz it may choose 106 tones + 26 tones + 52 tones + 52 tones to address a maximum of four STAs.

[0047] In this context, the queue status refers to the first communication device transmits to two or more second communication devices (downlink scenario). Here, the first communication device checks its queue to see how many packets are ready to transmit to each STA and decides if a STA is severed at all and if it is served how much bandwidth may be needed. The sequence is typically (but not necessarily) first in first out. For instance, if there are three STAs (A, B, C) and the following data packets in the queue of the first communication device: A, B, A, A, A, B, B, C, A, A, B, B. Here, it makes sense to allocate the same number of tones to STA A and STA B (because both have a similar number of packets waiting in the queue of the first communication device to be transmitted) and not to address STA C (because there is just one packet waiting in the queue of the first communication device to be transmitted). If STA C has a latency requirement, it would be better to serve it with one sixth of the number of tones of STA A or STA B, respectively.

[0048] In the second step 302 the AP allocates dRUs to STAs and defines their transmission parameters (e.g. MCS, etc.). Some RUs may stay unallocated (i.e. empty). For example the AP allocates 106 tone dRU to STA 1 , 26 tone dRU is empty, 52 tone dRU to STA 2 and the other 52 tone dRU to STA 3.

[0049] In the third step 303, the tone plan selection and dRU allocation is sent to STAs in the preamble of the PPDU carrying the downlink data. The AP modulates the data for each STA on the allocated dRU tones. Since the AP transmits to all STAs in downlink, another power constraint is in place meaning that if one dRU has a power boost, another STA may have a power degradation such that overall power is the same.

[0050] In the following exemplary tones plans are listed, from which the AP may select a tone plan. The following numbers indicate the first half of tones with positive indices and the second half of tones have the same number with negative index. Zero leftover tones may be inserted between any two numbers or added at the end of a sequence of numbers.

[0051] A) Tone planes for 20 MHz bandwidth:

[0052] A1) First tone plan (for a first level) (illustrated in Fig. 19):Allocation for a first resource unit (dRU_A; 13 tones -> 26 tones after mirroring, minimum distance 9):I I , 20, 29, 38, 47, 56, 65, 74, 83, 92, 101 , 110, 119Allocation for a second resource unit (dRU_B; 53 tones -> 106 tones after mirroring, minimum distance 2):4, 6, 8, 10, 13, 15, 17, 19, 22, 24, 26, 28, 31 , 33, 35, 37, 40, 42, 44, 46, 49, 51, 53, 55, 58,60, 62, 64, 67, 69, 71 , 73, 76, 78, 80, 82, 85, 87, 89, 91 , 94, 96, 98, 100, 103, 105, 107, 109, 112, 114, 116, 118, 121Allocation for a third resource unit (dRU_C; 53 tones -> 106 tones after mirroring, minimum distance 2):5, 7, 9, 12, 14, 16, 18, 21 , 23, 25, 27, 30, 32, 34, 36, 39, 41 , 43, 45, 48, 50, 52, 54, 57, 59,61 , 63, 66, 68, 70, 72, 75, 77, 79, 81 , 84, 86, 88, 90, 93, 95, 97, 99, 102, 104, 106, 108,I I I , 113, 115, 117, 120, 122.

[0053] A2) Second tone plan (for a second level) (illustrated in Fig. 20):Allocation for a first resource unit (dRU_A; unchanged, as for first level):I I , 20, 29, 38, 47, 56, 65, 74, 83, 92, 101 , 110, 119Allocation for a second resource unit (dRU_B_p1 ; from dRU_B as originating dRU; 26 tones -> 52 tones after mirroring, minimum distance 4):4, 8, 13, 17, 22, 26, 31 , 35, 40, 44, 49, 53, 58, 62, 67, 71 , 76, 80, 85, 89, 94, 98, 103, 107, 112, 116Allocation for a third resource unit (dRU_B_p2; from dRU_B as originating dRU; 26 tones -> 52 tones after mirroring, minimum distance 4):6, 10, 15, 19, 24, 28, 33, 37, 42, 46, 51 , 55, 60, 64, 69, 73, 78, 82, 87, 91 , 96, 100, 105, 109, 114, 118Allocation for a fourth resource unit (dRU_C_p1 ; from dRU_C as originating dRU; 26 tones -> 52 tones after mirroring, minimum distance 4):5, 9, 14, 18, 23, 27, 32, 36, 41 , 45, 50, 54, 59, 63, 68, 72, 77, 81 , 86, 90, 95, 99, 104, 108, 113, 117Allocation for a fifth resource unit (dRU_C_p2; from dRU_C as originating dRU; 26 tones -> 52 tones after mirroring, minimum distance 4):7, 12, 16, 21 , 25, 30, 34, 39, 43, 48, 52, 57, 61 , 66, 70, 75, 79, 84, 88, 93, 97, 102, 106,I I I , 115, 120.The tone plan creates two leftover tones 121 , 122.

[0054] A3) Third tone plan (for a third level):Allocation for a first resource unit (dRU_A; unchanged, as in first level):11 , 20, 29, 38, 47, 56, 65, 74, 83, 92, 101 , 110, 119Allocation for a second resource unit (dRU_B_p1_p1 ; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):4, 13, 22, 31 , 40, 49, 58, 67, 76, 85, 94, 103, 112Allocation for a third resource unit (dRU_B_p1_p2; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):8, 17, 26, 35, 44, 53, 62, 71, 80, 89, 98, 107, 116Allocation for a fourth resource unit (dRU_B_p2_p1 ; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):6, 15, 24, 33, 42, 51, 60, 69, 78, 87, 96, 105, 114Allocation for a fifth resource unit (dRU_B_p2_p2; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9): 10, 19, 28, 37, 46, 55, 64, 73, 82, 91 , 100, 109, 118Allocation for a sixth resource unit (dRU_C_p1_p1; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):5, 14, 23, 32, 41 , 50, 59, 68, 77, 86, 95, 104, 113Allocation for a seventh resource unit (dRU_C_p1_p2; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):9, 18, 27, 36, 45, 54, 63, 72, 81 , 90, 99, 108, 117Allocation for an eighth resource unit (dRU_C_p2_p1 ; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):7, 16, 25, 34, 43, 52, 61 , 70, 79, 88, 97, 106, 115Allocation for a ninth resource unit (dRU_C_p2_p2; from dRU_B_p1 as originating dRU; 13 tones -> 26 tones after mirroring, minimum distance 9):12, 21 , 30, 39, 48, 57, 66, 75, 84, 93, 102, 111, 120.

[0055] B) Tone planes for 40 MHz bandwidth:

[0056] B1) First tone plan (for a first level):Allocation for a first resource unit (dRU_A; 121 tones -> 242 tones after mirroring, minimum distance 2):3, 5, 7, 9, 11 , 13, 15, 17, 19, 21 , 23, 25, 27, 29, 31, 33, 35, 37, 39, 41 , 43, 45, 47, 49, 51 ,53, 55, 57, 59, 61, 63, 65, 67, 69, 71 , 73, 75, 77, 79, 81 , 83, 85, 87, 89, 91 , 93, 95, 97, 99,101 , 103, 105, 107, 109, 111 , 113, 115, 117, 119, 121 , 123, 125, 127, 129, 131 , 133, 135,137, 139, 141 , 143, 145, 147, 149, 151 , 153, 155, 157, 159, 161 , 163, 165, 167, 169, 171 ,173, 175, 177, 179, 181 , 183, 185, 187, 189, 191, 193, 195, 197, 199, 201 , 203, 205, 207,209, 211 , 213, 215, 217, 219, 221 , 223, 225, 227, 229, 231 , 233, 235, 237, 239, 241 , 243Allocation for a second resource unit (dRU_B; 121 tones -> 242 tones after mirroring, minimum distance 2):4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52,54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98,100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134,136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170,172, 174, 176, 178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198, 200, 202, 204, 206,208, 210, 212, 214, 216, 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242,244.

[0057] B2) Second tone plan (for a second level):Allocation for a first resource unit (dRU_A_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):17, 35, 53, 71 , 89, 107, 125, 143, 161 , 179, 197, 215, 233Allocation for a second resource unit (dRU_A_p2; 53 tones -> 106 tones after mirroring, minimum distance 4):3, 7, 11 , 15, 21, 25, 29, 33, 39, 43, 47, 51 , 57, 61, 65, 69, 75, 79, 83, 87, 93, 97, 101 , 105,111 , 115, 119, 123, 129, 133, 137, 141 , 147, 151, 155, 159, 165, 169, 173, 177, 183, 187,191 , 195, 201 , 205, 209, 213, 219, 223, 227, 231, 237Allocation for a third resource unit (dRU_A_p3; 53 tones -> 106 tones after mirroring, minimum distance 4):5, 9, 13, 19, 23, 27, 31, 37, 41 , 45, 49, 55, 59, 63, 67, 73, 77, 81 , 85, 91 , 95, 99, 103, 109,113, 117, 121 , 127, 131 , 135, 139, 145, 149, 153, 157, 163, 167, 171 , 175, 181 , 185, 189,193, 199, 203, 207, 211 , 217, 221 , 225, 229, 235, 239Allocation for a fourth resource unit (dRU_B_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18): 18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234Allocation for a fifth resource unit (dRU_B_p2; 53 tones -> 106 tones after mirroring, minimum distance 4):4, 8, 12, 16, 22, 26, 30, 34, 40, 44, 48, 52, 58, 62, 66, 70, 76, 80, 84, 88, 94, 98, 102, 106, 112, 116, 120, 124, 130, 134, 138, 142, 148, 152, 156, 160, 166, 170, 174, 178, 184, 188,192, 196, 202, 206, 210, 214, 220, 224, 228, 232, 238Allocation for a sixth resource unit (dRU_B_p3; 53 tones -> 106 tones after mirroring, minimum distance 4):6, 10, 14, 20, 24, 28, 32, 38, 42, 46, 50, 56, 60, 64, 68, 74, 78, 82, 86, 92, 96, 100, 104,110, 114, 118, 122, 128, 132, 136, 140, 146, 150, 154, 158, 164, 168, 172, 176, 182, 186,190, 194, 200, 204, 208, 212, 218, 222, 226, 230, 236, 240.This tone plan creates 4 leftover tones 241 , 242, 243, 244.

[0058] B3) Third tone plan (for a third level):Allocation for a first resource unit (dRU_A_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):17, 35, 53, 71 , 89, 107, 125, 143, 161 , 179, 197, 215, 233Allocation for a second resource unit (dRU_A_p2_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 8; the 3 is mirrored to -3 so that the minimum distance is 6, in an embodiment a leftover tone may be inserted before and all tones of the third level may be shifted by +1):3, 11 , 21 , 29, 39, 47, 57, 65, 75, 83, 93, 101 , 111, 119, 129, 137, 147, 155, 165, 173, 183, 191 , 201 , 209, 219, 227Allocation for a third resource unit (dRU_A_p2_p2; 26 tones -> 52 tones after mirroring, minimum distance 8):7, 15, 25, 33, 43, 51, 61 , 69, 79, 87, 97, 105, 115, 123, 133, 141 , 151 , 159, 169, 177, 187, 195, 205, 213, 223, 231Allocation for a fourth resource unit (dRU_A_p3_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 8):5, 13, 23, 31 , 41 , 49, 59, 67, 77, 85, 95, 103, 113, 121 , 131 , 139, 149, 157, 167, 175, 185,193, 203, 211 , 221, 229Allocation for a fifth resource unit (dRU_A_p3_p2; 26 tones -> 52 tones after mirroring, minimum distance 8):9, 19, 27, 37, 45, 55, 63, 73, 81 , 91 , 99, 109, 117, 127, 135, 145, 153, 163, 171 , 181 , 189, 199, 207, 217, 225, 235Allocation for a sixth resource unit (dRU_B_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234Allocation for a seventh resource unit (dRU_B_p2_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 8):4, 12, 22, 30, 40, 48, 58, 66, 76, 84, 94, 102, 112, 120, 130, 138, 148, 156, 166, 174, 184, 192, 202, 210, 220, 228Allocation for an eighth resource unit (dRU_B_p2_p2; 26 tones -> 52 tones after mirroring, minimum distance 8):8, 16, 26, 34, 44, 52, 62, 70, 80, 88, 98, 106, 116, 124, 134, 142, 152, 160, 170, 178, 188, 196, 206, 214, 224, 232Allocation for a ninth resource unit (dRU_B_p3_p1; 26 tones -> 52 tones after mirroring, minimum distance 8):6, 14, 24, 32, 42, 50, 60, 68, 78, 86, 96, 104, 114, 122, 132, 140, 150, 158, 168, 176, 186, 194, 204, 212, 222, 230Allocation for a tenth resource unit (dRU_B_p3_p2; 26 tones -> 52 tones after mirroring, minimum distance 8):10, 20, 28, 38, 46, 56, 64, 74, 82, 92, 100, 110, 118, 128, 136, 146, 154, 164, 172, 182, 190, 200, 208, 218, 226, 236.This tone plan creates four leftover tones 237, 238, 239, 240.In an embodiment, all allocations of the tone plan of the third level may be shifted by +1, i.e., inserting one leftover tones at index 3.

[0059] B4) Fourth tone plan (for a fourth level):Allocation for a first resource unit (dRU_A_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):17, 35, 53, 71 , 89, 107, 125, 143, 161 , 179, 197, 215, 233Allocation for a second resource unit (dRU_A_p2_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18; the 3 is mirrored to -3 so that the minimum distance is 6, inan embodiment a leftover tone may be inserted before and all tones of the fourth level may be shifted by +6):3, 21 , 39, 57, 75, 93, 111 , 129, 147, 165, 183, 201, 219Allocation for a third resource unit (dRU_A_p2_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):11 , 29, 47, 65, 83, 101, 119, 137, 155, 173, 191 , 209, 227Allocation for a fourth resource unit (dRU_A_p2_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18; the 7 is mirrored to -7 so that the minimum distance is 14, in an embodiment leftover tones may be inserted before):7, 25, 43, 61 , 79, 97, 115, 133, 151 , 169, 187, 205, 223Allocation for a fifth resource unit (dRU_A_p2_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):15, 33, 51 , 69, 87, 105, 123, 141 , 159, 177, 195, 213, 231Allocation for a sixth resource unit (dRU_A_p3_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18; the 5 is mirrored to -5 so that the minimum distance is 10, in an embodiment leftover tones may be inserted before):5, 23, 41 , 59, 77, 95, 113, 131 , 149, 167, 185, 203, 221Allocation for a seventh resource unit (dRU_A_p3_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):13, 31 , 49, 67, 85, 103, 121, 139, 157, 175, 193, 211 , 229Allocation for an eighth resource unit (dRU_A_p3_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):9, 27, 45, 63, 81 , 99, 117, 135, 153, 171 , 189, 207, 225Allocation for a ninth resource unit (dRU_A_p3_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):19, 37, 55, 73, 91, 109, 127, 145, 163, 181 , 199, 217, 235Allocation for a tenth resource unit (dRU_B_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234Allocation for an eleventh resource unit (dRU_B_p2_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18; the 4 is mirrored to -4 so that the minimum distance is 8, in an embodiment leftover tones may be inserted before):4, 22, 40, 58, 76, 94, 112, 130, 148, 166, 184, 202, 220Allocation for a twelfth resource unit (dRU_B_p2_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):12, 30, 48, 66, 84, 102, 120, 138, 156, 174, 192, 210, 228Allocation for a 13th resource unit (dRU_B_p2_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18; the 8 is mirrored to -8 so that the minimum distance is 16, in an embodiment leftover tones may be inserted before):8, 26, 44, 62, 80, 98, 116, 134, 152, 170, 188, 206, 224Allocation for a 14th resource unit (dRU_B_p2_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):16, 34, 52, 70, 88, 106, 124, 142, 160, 178, 196, 214, 232Allocation for a 15th resource unit (dRU_B_p3_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18; the 6 is mirrored to -6 so that the minimum distance is 12, in an embodiment leftover tones may be inserted before):6, 24, 42, 60, 78, 96, 114, 132, 150, 168, 186, 204, 222Allocation for a 16th resource unit (dRU_B_p3_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):14, 32, 50, 68, 86, 104, 122, 140, 158, 176, 194, 212, 230Allocation for a 17th resource unit (dRU_B_p3_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 18):10, 28, 46, 64, 82, 100, 118, 136, 154, 172, 190, 208, 226Allocation for an 18th resource unit (dRU_B_p3_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 18):20, 38, 56, 74, 92, 110, 128, 146, 164, 182, 200, 218, 236In an embodiment, all allocations of the tone plan of the fourth level B4 may be shifted by +6, i.e., inserting 6 leftover tones at index 3, 4, 5, 6, 7, 8. Further, in another embodiment, all tone plans of the fourth level B4 may be shifted by 6 tones by inserting 6 leftover tones at index 3, 4, 5, 6, 7, and 8; hence, the second resource unit of B4, for example, would have its first index at 9 instead of 3.

[0060] C) Tone planes for 80 MHz bandwidth:

[0061] C1) First tone plan (for a first level):Allocation for a first resource unit (dRU_A; 13 tones -> 26 tones after mirroring, minimum distance 38):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B; 242 tones -> 484 tones after mirroring, minimum distance 2):4, 6, 8, 10, 12, 14, 16, 18, 21 , 23, 25, 27, 29, 31 , 33, 35, 37, 39, 41 , 43, 45, 47, 49, 51, 53,55, 57, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 97, 99, 101 ,103, 105, 107, 109, 111 , 113, 115, 117, 119, 121, 123, 125, 127, 129, 131 , 133, 136, 138,140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 173, 175,177, 179, 181 , 183, 185, 187, 189, 191 , 193, 195, 197, 199, 201, 203, 205, 207, 209, 212,214, 216, 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 249,251 , 253, 255, 257, 259, 261 , 263, 265, 267, 269, 271, 273, 275, 277, 279, 281 , 283, 285,288, 290, 292, 294, 296, 298, 300, 302, 304, 306, 308, 310, 312, 314, 316, 318, 320, 322,325, 327, 329, 331, 333, 335, 337, 339, 341 , 343, 345, 347, 349, 351 , 353, 355, 357, 359,361 , 364, 366, 368, 370, 372, 374, 376, 378, 380, 382, 384, 386, 388, 390, 392, 394, 396,398, 401 , 403, 405, 407, 409, 411 , 413, 415, 417, 419, 421 , 423, 425, 427, 429, 431 , 433,435, 437, 440, 442, 444, 446, 448, 450, 452, 454, 456, 458, 460, 462, 464, 466, 468, 470,472, 474, 477, 479, 481 , 483, 485, 487, 489, 491, 493, 495, 497, 499Allocation for a third resource unit (dRU_C; 242 tones -> 484 tones after mirroring, minimum distance 2):5, 7, 9, 11 , 13, 15, 17, 19, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54,56, 59, 61 , 63, 65, 67, 69, 71 , 73, 75, 77, 79, 81 , 83, 85, 87, 89, 91 , 93, 95, 98, 100, 102,104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 135, 137, 139,141 , 143, 145, 147, 149, 151 , 153, 155, 157, 159, 161, 163, 165, 167, 169, 171 , 174, 176,178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198, 200, 202, 204, 206, 208, 211 , 213,215, 217, 219, 221, 223, 225, 227, 229, 231 , 233, 235, 237, 239, 241 , 243, 245, 247, 250,252, 254, 256, 258, 260, 262, 264, 266, 268, 270, 272, 274, 276, 278, 280, 282, 284, 287,289, 291 , 293, 295, 297, 299, 301 , 303, 305, 307, 309, 311 , 313, 315, 317, 319, 321 , 323,326, 328, 330, 332, 334, 336, 338, 340, 342, 344, 346, 348, 350, 352, 354, 356, 358, 360,363, 365, 367, 369, 371 , 373, 375, 377, 379, 381, 383, 385, 387, 389, 391 , 393, 395, 397,399, 402, 404, 406, 408, 410, 412, 414, 416, 418, 420, 422, 424, 426, 428, 430, 432, 434,436, 439, 441 , 443, 445, 447, 449, 451 , 453, 455, 457, 459, 461 , 463, 465, 467, 469, 471 ,473, 475, 478, 480, 482, 484, 486, 488, 490, 492, 494, 496, 498, 500.

[0062] C2) Second tone plan (for a second level):Allocation for a first resource unit (dRU_A; 13 tones -> 26 tones after mirroring, minimum distance 38):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1 ; 121 tones -> 242 tones after mirroring, minimum distance 4):4, 8, 12, 16, 21, 25, 29, 33, 37, 41 , 45, 49, 53, 57, 62, 66, 70, 74, 78, 82, 86, 90, 94, 99,103, 107, 111 , 115, 119, 123, 127, 131 , 136, 140, 144, 148, 152, 156, 160, 164, 168, 173,177, 181 , 185, 189, 193, 197, 201 , 205, 209, 214, 218, 222, 226, 230, 234, 238, 242, 246,251 , 255, 259, 263, 267, 271 , 275, 279, 283, 288, 292, 296, 300, 304, 308, 312, 316, 320,325, 329, 333, 337, 341 , 345, 349, 353, 357, 361, 366, 370, 374, 378, 382, 386, 390, 394,398, 403, 407, 411, 415, 419, 423, 427, 431 , 435, 440, 444, 448, 452, 456, 460, 464, 468,472, 477, 481 , 485, 489, 493, 497Allocation for a third resource unit (dRU_B_p2; 121 tones -> 242 tones after mirroring, minimum distance 4):6, 10, 14, 18, 23, 27, 31 , 35, 39, 43, 47, 51 , 55, 60, 64, 68, 72, 76, 80, 84, 88, 92, 97, 101 , 105, 109, 113, 117, 121 , 125, 129, 133, 138, 142, 146, 150, 154, 158, 162, 166, 170, 175,179, 183, 187, 191, 195, 199, 203, 207, 212, 216, 220, 224, 228, 232, 236, 240, 244, 249,253, 257, 261 , 265, 269, 273, 277, 281 , 285, 290, 294, 298, 302, 306, 310, 314, 318, 322,327, 331 , 335, 339, 343, 347, 351 , 355, 359, 364, 368, 372, 376, 380, 384, 388, 392, 396,401 , 405, 409, 413, 417, 421 , 425, 429, 433, 437, 442, 446, 450, 454, 458, 462, 466, 470, 474, 479, 483, 487, 491 , 495, 499Allocation for a fourth resource unit (dRU_C_p1 ; 121 tones -> 242 tones after mirroring, minimum distance 4):5, 9, 13, 17, 22, 26, 30, 34, 38, 42, 46, 50, 54, 59, 63, 67, 71 , 75, 79, 83, 87, 91 , 95, 100,104, 108, 112, 116, 120, 124, 128, 132, 137, 141, 145, 149, 153, 157, 161 , 165, 169, 174,178, 182, 186, 190, 194, 198, 202, 206, 211 , 215, 219, 223, 227, 231 , 235, 239, 243, 247,252, 256, 260, 264, 268, 272, 276, 280, 284, 289, 293, 297, 301 , 305, 309, 313, 317, 321 ,326, 330, 334, 338, 342, 346, 350, 354, 358, 363, 367, 371 , 375, 379, 383, 387, 391 , 395,399, 404, 408, 412, 416, 420, 424, 428, 432, 436, 441 , 445, 449, 453, 457, 461 , 465, 469,473, 478, 482, 486, 490, 494, 498Allocation for a fifth resource unit (dRU_C_p2;121 tones -> 242 tones after mirroring, minimum distance 4):7, 11 , 15, 19, 24, 28, 32, 36, 40, 44, 48, 52, 56, 61, 65, 69, 73, 77, 81 , 85, 89, 93, 98, 102, 106, 110, 114, 118, 122, 126, 130, 135, 139, 143, 147, 151 , 155, 159, 163, 167, 171 , 176,180, 184, 188, 192, 196, 200, 204, 208, 213, 217, 221 , 225, 229, 233, 237, 241 , 245, 250,254, 258, 262, 266, 270, 274, 278, 282, 287, 291, 295, 299, 303, 307, 311 , 315, 319, 323, 328, 332, 336, 340, 344, 348, 352, 356, 360, 365, 369, 373, 377, 381 , 385, 389, 393, 397,402, 406, 410, 414, 418, 422, 426, 430, 434, 439, 443, 447, 451 , 455, 459, 463, 467, 471 ,475, 480, 484, 488, 492, 496, 500.

[0063] C3) Third tone plan (for a third level):Allocation for a first resource unit (dRU_A; 13 tones -> 26 tones after mirroring, minimum distance 38):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1_p1 ; 3 tones -> 26 tones after mirroring, minimum distance 37):33, 70, 107, 144, 181 , 218, 255, 292, 329, 366, 403, 440, 477Allocation for a third resource unit (dRU_B_p1_p2; 53 tones -> 106 tones after mirroring, minimum distance 8):4, 12, 21 , 29, 41 , 49, 57, 66, 78, 86, 94, 103, 115, 123, 131 , 140, 152, 160, 168, 177, 189,197, 205, 214, 226, 234, 242, 251 , 263, 271 , 279, 288, 300, 308, 316, 325, 337, 345, 353,361 , 374, 382, 390, 398, 411 , 419, 427, 435, 448, 456, 464, 472, 485Allocation for a fourth resource unit (dRU_B_p1_p3; 53 tones -> 106 tones after mirroring, minimum distance 8):8, 16, 25, 37, 45, 53, 62, 74, 82, 90, 99, 111 , 119, 127, 136, 148, 156, 164, 173, 185, 193,201 , 209, 222, 230, 238, 246, 259, 267, 275, 283, 296, 304, 312, 320, 333, 341 , 349, 357,370, 378, 386, 394, 407, 415, 423, 431 , 444, 452, 460, 468, 481 , 489Allocation for a fifth resource unit (dRU_B_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):35, 72, 109, 146, 183, 220, 257, 294, 331 , 368, 405, 442, 479Allocation for a sixth resource unit (dRU_B_p2_p2; 53 tones -> 106 tones after mirroring, minimum distance 8):6, 14, 23, 31 , 43, 51, 60, 68, 80, 88, 97, 105, 117, 125, 133, 142, 154, 162, 170, 179, 191 ,199, 207, 216, 228, 236, 244, 253, 265, 273, 281, 290, 302, 310, 318, 327, 339, 347, 355,364, 376, 384, 392, 401 , 413, 421 , 429, 437, 450, 458, 466, 474, 487Allocation for a seventh resource unit (dRU_B_p2_p3; 53 tones -> 106 tones after mirroring, minimum distance 8):10, 18, 27, 39, 47, 55, 64, 76, 84, 92, 101 , 113, 121 , 129, 138, 150, 158, 166, 175, 187,195, 203, 212, 224, 232, 240, 249, 261 , 269, 277, 285, 298, 306, 314, 322, 335, 343, 351 ,359, 372, 380, 388, 396, 409, 417, 425, 433, 446, 454, 462, 470, 483, 491Allocation for an eighth resource unit (dRU_C_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):34, 71 , 108, 145, 182, 219, 256, 293, 330, 367, 404, 441 , 478Allocation for a ninth resource unit (dRU_C_p1_p2; 53 tones -> 106 tones after mirroring, minimum distance 8):5, 13, 22, 30, 42, 50, 59, 67, 79, 87, 95, 104, 116, 124, 132, 141 , 153, 161 , 169, 178, 190,198, 206, 215, 227, 235, 243, 252, 264, 272, 280, 289, 301 , 309, 317, 326, 338, 346, 354,363, 375, 383, 391, 399, 412, 420, 428, 436, 449, 457, 465, 473, 486Allocation for a tenth resource unit (dRU_C_p1_p3; 53 tones -> 106 tones after mirroring, minimum distance 8):9, 17, 26, 38, 46, 54, 63, 75, 83, 91 , 100, 112, 120, 128, 137, 149, 157, 165, 174, 186, 194, 202, 211 , 223, 231 , 239, 247, 260, 268, 276, 284, 297, 305, 313, 321 , 334, 342, 350, 358, 371 , 379, 387, 395, 408, 416, 424, 432, 445, 453, 461 , 469, 482, 490Allocation for an eleventh resource unit (dRU_C_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):36, 73, 110, 147, 184, 221 , 258, 295, 332, 369, 406, 443, 480Allocation for a twelfth resource unit (dRU_C_p2_p2; 53 tones -> 106 tones after mirroring, minimum distance 8):7, 15, 24, 32, 44, 52, 61 , 69, 81 , 89, 98, 106, 118, 126, 135, 143, 155, 163, 171 , 180, 192,200, 208, 217, 229, 237, 245, 254, 266, 274, 282, 291, 303, 311 , 319, 328, 340, 348, 356,365, 377, 385, 393, 402, 414, 422, 430, 439, 451, 459, 467, 475, 488Allocation for a 13th resource unit (dRU_C_p2_p3; 53 tones -> 106 tones after mirroring, minimum distance 8):11 , 19, 28, 40, 48, 56, 65, 77, 85, 93, 102, 114, 122, 130, 139, 151 , 159, 167, 176, 188,196, 204, 213, 225, 233, 241 , 250, 262, 270, 278, 287, 299, 307, 315, 323, 336, 344, 352,360, 373, 381 , 389, 397, 410, 418, 426, 434, 447, 455, 463, 471 , 484, 492.This tone plan creates 8 leftover tones 493, 494, 495, 496, 497, 498, 499, 500.

[0064] C4) Fourth tone plan (for a fourth level):Allocation for a first resource unit (dRU_A; 13 tones -> 26 tones after mirroring, minimum distance 38):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):33, 70, 107, 144, 181 , 218, 255, 292, 329, 366, 403, 440, 477Allocation for a third resource unit (dRU_B_p1_p2_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):12, 29, 49, 66, 86, 103, 123, 140, 160, 177, 197, 214, 234, 251 , 271 , 288, 308, 325, 345, 361 , 382, 398, 419, 435, 456, 472Allocation for a fourth resource unit (dRU_B_p1_p2_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):21 , 41 , 57, 78, 94, 115, 131 , 152, 168, 189, 205, 226, 242, 263, 279, 300, 316, 337, 353, 374, 390, 411 , 427, 448, 464, 485Allocation for a fifth resource unit (dRU_B_p1_p3_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):16, 37, 53, 74, 90, 111 , 127, 148, 164, 185, 201 , 222, 238, 259, 275, 296, 312, 333, 349, 370, 386, 407, 423, 444, 460, 481Allocation for a sixth resource unit (dRU_B_p1_p3_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):25, 45, 62, 82, 99, 119, 136, 156, 173, 193, 209, 230, 246, 267, 283, 304, 320, 341 , 357, 378, 394, 415, 431, 452, 468, 489Allocation for a seventh resource unit (dRU_B_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):35, 72, 109, 146, 183, 220, 257, 294, 331 , 368, 405, 442, 479Allocation for an eighth resource unit (dRU_B_p2_p2_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):14, 31 , 51, 68, 88, 105, 125, 142, 162, 179, 199, 216, 236, 253, 273, 290, 310, 327, 347, 364, 384, 401 , 421, 437, 458, 474Allocation for a ninth resource unit (dRU_B_p2_p2_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):23, 43, 60, 80, 97, 117, 133, 154, 170, 191 , 207, 228, 244, 265, 281 , 302, 318, 339, 355, 376, 392, 413, 429, 450, 466, 487Allocation for a tenth resource unit (dRU_B_p2_p3_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):18, 39, 55, 76, 92, 113, 129, 150, 166, 187, 203, 224, 240, 261 , 277, 298, 314, 335, 351 , 372, 388, 409, 425, 446, 462, 483Allocation for an eleventh resource unit (dRU_B_p2_p3_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):27, 47, 64, 84, 101 , 121, 138, 158, 175, 195, 212, 232, 249, 269, 285, 306, 322, 343, 359, 380, 396, 417, 433, 454, 470, 491Allocation for a twelfth resource unit (dRU_C_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):34, 71 , 108, 145, 182, 219, 256, 293, 330, 367, 404, 441 , 478Allocation for a 13th resource unit (dRU_C_p1_p2_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):13, 30, 50, 67, 87, 104, 124, 141 , 161, 178, 198, 215, 235, 252, 272, 289, 309, 326, 346, 363, 383, 399, 420, 436, 457, 473Allocation for a 14th resource unit (dRU_C_p1_p2_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):22, 42, 59, 79, 95, 116, 132, 153, 169, 190, 206, 227, 243, 264, 280, 301 , 317, 338, 354, 375, 391 , 412, 428, 449, 465, 486Allocation for a 15th resource unit (dRU_C_p1_p3_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):17, 38, 54, 75, 91 , 112, 128, 149, 165, 186, 202, 223, 239, 260, 276, 297, 313, 334, 350, 371 , 387, 408, 424, 445, 461 , 482Allocation for a 16th resource unit (dRU_C_p1_p3_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):26, 46, 63, 83, 100, 120, 137, 157, 174, 194, 211, 231, 247, 268, 284, 305, 321, 342, 358, 379, 395, 416, 432, 453, 469, 490Allocation for a 17th resource unit (dRU_C_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):36, 73, 110, 147, 184, 221 , 258, 295, 332, 369, 406, 443, 480Allocation for an 18th resource unit (dRU_C_p2_p2_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):15, 32, 52, 69, 89, 106, 126, 143, 163, 180, 200, 217, 237, 254, 274, 291 , 311, 328, 348, 365, 385, 402, 422, 439, 459, 475Allocation for a 19th resource unit (dRU_C_p2_p2_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):24, 44, 61, 81, 98, 118, 135, 155, 171, 192, 208, 229, 245, 266, 282, 303, 319, 340, 356, 377, 393, 414, 430, 451 , 467, 488Allocation for a 20th resource unit (dRU_C_p2_p3_p1 ; 26 tones -> 52 tones after mirroring, minimum distance 16):19, 40, 56, 77, 93, 114, 130, 151 , 167, 188, 204, 225, 241 , 262, 278, 299, 315, 336, 352, 373, 389, 410, 426, 447, 463, 484Allocation for a 21st resource unit (dRU_C_p2_p3_p2; 26 tones -> 52 tones after mirroring, minimum distance 16):28, 48, 65, 85, 102, 122, 139, 159, 176, 196, 213, 233, 250, 270, 287, 307, 323, 344, 360, 381 , 397, 418, 434, 455, 471 , 492.This tone plan creates 8 more leftover tones 4, 5, 6, 7, 8, 9, 10, 11.

[0065] C5) Fifth tone plan (for a fifth level):Allocation for a first resource unit (dRU_A; 13 tones -> 26 tones after mirroring, minimum distance 38):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):33, 70, 107, 144, 181 , 218, 255, 292, 329, 366, 403, 440, 477Allocation for a third resource unit (dRU_B_p1_p2_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 12 is mirrored to -12; hence the minimum distance is 24; in an embodiment leftover tones may be put before):12, 49, 86, 123, 160, 197, 234, 271 , 308, 345, 382, 419, 456Allocation for a fourth resource unit (dRU_B_p1_p2_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 36):29, 66, 103, 140, 177, 214, 251 , 288, 325, 361 , 398, 435, 472Allocation for a fifth resource unit (dRU_B_p1_p2_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):21 , 57, 94, 131 , 168, 205, 242, 279, 316, 353, 390, 427, 464Allocation for a sixth resource unit (dRU_B_p1_p2_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):41 , 78, 115, 152, 189, 226, 263, 300, 337, 374, 411 , 448, 485Allocation for an eighth resource unit (dRU_B_p1_p3_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 16 is mirrored to -16; hence the minimum distance is 32; in an embodiment leftover tones may be put before):16, 53, 90, 127, 164, 201 , 238, 275, 312, 349, 386, 423, 460Allocation for a ninth resource unit (dRU_B_p1_p3_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):37, 74, 111 , 148, 185, 222, 259, 296, 333, 370, 407, 444, 481Allocation for a tenth resource unit (dRU_B_p1_p3_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):25, 62, 99, 136, 173, 209, 246, 283, 320, 357, 394, 431 , 468Allocation for an eleventh resource unit (dRU_B_p1_p3_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):45, 82, 119, 156, 193, 230, 267, 304, 341 , 378, 415, 452, 489Allocation for a twelfth resource unit (dRU_B_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):35, 72, 109, 146, 183, 220, 257, 294, 331 , 368, 405, 442, 479Allocation for a 13th resource unit (dRU_B_p2_p2_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 14 is mirrored to -14; hence the minimum distance is 17; in an embodiment leftover tones may be put before):14, 51 , 88, 125, 162, 199, 236, 273, 310, 347, 384, 421 , 458Allocation for a 14th resource unit (dRU_B_p2_p2_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 36):31 , 68, 105, 142, 179, 216, 253, 290, 327, 364, 401 , 437, 474Allocation for a 15th resource unit (dRU_B_p2_p2_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):23, 60, 97, 133, 170, 207, 244, 281 , 318, 355, 392, 429, 466Allocation for a 16th resource unit (dRU_B_p2_p2_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):43, 80, 117, 154, 191 , 228, 265, 302, 339, 376, 413, 450, 487Allocation for a 17th resource unit (dRU_B_p2_p3_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 18 is mirrored to -18; hence the minimum distance is 36; in an embodiment leftover tones may be put before):18, 55, 92, 129, 166, 203, 240, 277, 314, 351 , 388, 425, 462Allocation for an 18th resource unit (dRU_B_p2_p3_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):39, 76, 113, 150, 187, 224, 261 , 298, 335, 372, 409, 446, 483Allocation for a 19th resource unit (dRU_B_p2_p3_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):27, 64, 101 , 138, 175, 212, 249, 285, 322, 359, 396, 433, 470Allocation for a 20th resource unit (dRU_B_p2_p3_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):47, 84, 121 , 158, 195, 232, 269, 306, 343, 380, 417, 454, 491Allocation for a 21st resource unit (dRU_C_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):34, 71 , 108, 145, 182, 219, 256, 293, 330, 367, 404, 441 , 478Allocation for a 22nd resource unit (dRU_C_p1_p2_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 13 is mirrored to -13; hence the minimum distance is 26; in an embodiment leftover tones may be put before):13, 50, 87, 124, 161, 198, 235, 272, 309, 346, 383, 420, 457Allocation for a 23rd resource unit (dRU_C_p1_p2_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 36):30, 67, 104, 141 , 178, 215, 252, 289, 326, 363, 399, 436, 473Allocation for a 24th resource unit (dRU_C_p1_p2_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):22, 59, 95, 132, 169, 206, 243, 280, 317, 354, 391, 428, 465Allocation for a 25th resource unit (dRU_C_p1_p2_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):42, 79, 116, 153, 190, 227, 264, 301 , 338, 375, 412, 449, 486Allocation for a 26th resource unit (dRU_C_p1_p3_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 17 is mirrored to -17; hence the minimum distance is 34; in an embodiment leftover tones may be put before):17, 54, 91 , 128, 165, 202, 239, 276, 313, 350, 387, 424, 461Allocation for a 27th resource unit (dRU_C_p1_p3_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):38, 75, 112, 149, 186, 223, 260, 297, 334, 371 , 408, 445, 482Allocation for a 28th resource unit (dRU_C_p1_p3_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):26, 63, 100, 137, 174, 211 , 247, 284, 321 , 358, 395, 432, 469Allocation for a 29th resource unit (dRU_C_p1_p3_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):46, 83, 120, 157, 194, 231 , 268, 305, 342, 379, 416, 453, 490Allocation for a 30th resource unit (dRU_C_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):36, 73, 110, 147, 184, 221 , 258, 295, 332, 369, 406, 443, 480Allocation for a 31st resource unit (dRU_C_p2_p2_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37; the 15 is mirrored to -15; hence the minimum distance is 30; in an embodiment leftover tones may be put before):15, 52, 89, 126, 163, 200, 237, 274, 311 , 348, 385, 422, 459Allocation for a 32nd resource unit (dRU_C_p2_p2_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 36):32, 69, 106, 143, 180, 217, 254, 291 , 328, 365, 402, 439, 475Allocation for a 33rd resource unit (dRU_C_p2_p2_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):24, 61 , 98, 135, 171, 208, 245, 282, 319, 356, 393, 430, 467Allocation for a 34th resource unit (dRU_C_p2_p2_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):44, 81 , 118, 155, 192, 229, 266, 303, 340, 377, 414, 451 , 488Allocation for a 35th resource unit (dRU_C_p2_p3_p1_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 37):19, 56, 93, 130, 167, 204, 241 , 278, 315, 352, 389, 426, 463Allocation for a 36th resource unit (dRU_C_p2_p3_p1_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):40, 77, 114, 151 , 188, 225, 262, 299, 336, 373, 410, 447, 484 Allocation for a 37th resource unit (dRU_C_p2_p3_p2_p1 ; 13 tones -> 26 tones after mirroring, minimum distance 36):28, 65, 102, 139, 176, 213, 250, 287, 323, 360, 397, 434, 471 Allocation for a 38th resource unit (dRU_C_p2_p3_p2_p2; 13 tones -> 26 tones after mirroring, minimum distance 37):48, 85, 122, 159, 196, 233, 270, 307, 344, 381 , 418, 455, 492.In an embodiment, all tone plans of the fifth level C5 may be shifted by +7, i.e. , inserting 7 leftover tones (out of the 16) at index 12, 13, 14, 15, 16, 17, 18.

[0066] In this disclosure, any reference to a minimum distance of tones belonging to same dRU shall be understood as follows: The “minimum distance” is referred to by saying “minimum distance is X”, but in fact the number of tones between two neighboring tones is X-1. For example, if dRU1 is 1, 3, 5 and dRU2 is 2, 4, 6, the minimum distance is X=2, but there is just one tone (X-1=1) in between.

[0067] Thus, the foregoing discussion discloses and describes merely exemplary embodiments of the present disclosure. As will be understood by those skilled in the art, the present disclosure may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the disclosure of the present disclosure is intended to be illustrative, but not limiting of the scope of the disclosure, as well as other claims. The disclosure, including any readily discernible variants of the teachings herein, defines, in part, the scope of the foregoing claim terminology such that no inventive subject matter is dedicated to the public.

[0068] In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single element or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0069] In so far as embodiments of the disclosure have been described as being implemented, at least in part, by software-controlled data processing apparatus, it will be appreciated that a non-transitory machine-readable medium carrying such software, such as an optical disk, a magnetic disk, semiconductor memory or the like, is also considered to represent an embodiment of the present disclosure. Further, such a software may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.

[0070] The elements of the disclosed devices, apparatus and systems may be implemented by corresponding hardware and / or software elements, for instance appropriated circuits. A circuit is a structural assemblage of electronic components including conventional circuit elements, integrated circuits including application specific integrated circuits, standard integrated circuits, application specific standard products, and field programmable gate arrays. Further a circuit includes central processing units, graphics processing units, and microprocessors which are programmed or configured according to software code. A circuit does not include pure software, although a circuit includes the above-described hardware executing software.

[0071] It follows a list of further embodiments of the disclosed subject matter:1. First communication device configured to communicate with one or more second communication devices, the first communication device comprising circuitry configured to: select at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units; allocate one or more resource units of the selected tone plan to the one or more second communication devices; notify the one or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmit data to and / or receive data from the one or more second communication devices on the respectively allocated one or more resource units.2. First communication device according to embodiment 1 , wherein the circuitry is configured to allocate two or more resource units of the selected tone plan to two or more second communication devices; notify the two or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmit data to and / or receive data from the two or more second communication devices on the respectively allocated one or more resource unit.3. First communication device according to embodiment 1 or 2, wherein the circuitry is configured to select the tone plan based on one or more transmission requirements, the transmission requirements including: the number of second communication devices to which the first communication device intends to transmit, the number of second communication devices which intend to transmit to the first communication device, data rate requirements of the one or more second communication device to which the first communication device intends to transmit and / or which intend to transmit to the first communication device, desired transmission power of the one or more second communication device to which the first communication device intends to transmit and / or which intend to transmit to the first communication device, desired transmission power of the first communication device that intends to transmit to the one or more second communication devices, and the number of second communication devices which may contend for transmission to the first communication device.4. First communication device according to any preceding embodiment, wherein the circuitry is configured to obtain the one or more transmission requirements from a status report received from the one or more second communication devices and / or by monitoring a current queue status.5. First communication device according to any preceding embodiment, wherein the circuitry is configured to define one or more transmission parameters of the one or more second communication devices and to notify the one or more second communication devices of the defined transmission parameters.6. First communication device according to embodiment 5, wherein the circuitry is configured to define, as one or more transmission parameters, one or more of transmit power, modulation coding scheme, number of spatial streams, length of transmission, bandwidth, channel sounding configuration, transmit power of first communication device, guard interval length, number and configuration of training fields, and target receive signal strength.7. First communication device according to embodiment 6, wherein the circuitry is configured to define an increased transmit power for use by one or more second communication devices and a reduced transmit power for use by one or more other second communication devices.8. First communication device according to any preceding embodiment, wherein the circuitry is configured to notify the one or more second communication devices of the selected tone plan and the allocation of the one or more resource units via a trigger frame and / or within a data unit, in particular within a preamble of a data unit, transmitted to the respective second communication device.9. First communication device according to any preceding embodiment, wherein the circuitry is configured to select a tone plan from a plurality of tone plans, each tone plan comprising an allocation of one or more of 26, 52, 106, 242 and 484 tones to different resource units and wherein equal to or less than 50 % of all tones are allocated to a single resource unit.10. First communication device according to any preceding embodiment, wherein the minimum distance between two subsequent tones allocated to a resource unit is two or more and wherein any remaining tones not allocated to any resource unit are set to zero.11. First communication device according to any preceding embodiment, wherein one or more tone plans of the plurality of tone plans each comprises a first set of tones allocated to a first resource unit, wherein subsequent tones of the first set have a predetermined minimum distance, and two or more further sets of tones are alternately allocated to two or more further resource units.12. First communication device according to any preceding embodiment, wherein one or more tone plans of the plurality of tone plans each comprises two or more sets of tones alternately allocated to two or more resource units.13. First communication device according to embodiment 11 or 12, wherein one or more sets of tones each comprises two or more subsets of tones alternately allocated to two or more resource units.14. First communication device according to embodiment 11 or 12, wherein one or more sets of tones each comprises one subset of tones with a predetermined minimum distance and two or more subsets of tones alternately allocated to two or more resource units.15. First communication device according to according to any preceding embodiment, wherein the number of available tones of a tone plan is determined by the number of 256, 512, or 1024 tones for a bandwidth of 20, 40, or 80 MHz, respectively, minus a number of DC tones and minus a number of guard tones.16. First communication device according to embodiment 15, wherein from the number of available tones, firstly the first set of tones with a predetermined minimum distance is allocated and secondly the two or more further sets are alternately allocated out of the remaining tones to two or more further resource units.17. First communication device according to any preceding embodiment, whereinin a tone plan for a bandwidth of 20 MHz, a 106 tone resource unit has a minimum distance of 2, a 52 tone resource unit has a minimum distance of 4 and a 26 tone resource unit has a minimum distance of 9; and / or in a tone plan for a bandwidth of 40 MHz, a 242 tone resource unit has a minimum distance of 2, a 106 tone resource unit has a minimum distance of 4, a 52 tone resource unit has a minimum distance of 8 and a 26 tone resource unit has a minimum distance of 18; and / or in a tone plan for a bandwidth of 80 MHz, a 484 tone resource unit has a minimum distance of 2, a 242 tone resource unit has a minimum distance of 4, a 106 tone resource unit has a minimum distance of 8, a 52 tone resource unit has a minimum distance of 16 and a 26 tone resource unit has a minimum distance of 36.18. First communication device according to embodiment 11 or 12, wherein a tone plan comprises single zero leftover tones that are placed as exceptions in between two subsequent tones and / or at the end of the tones and / or as part of DC tones.19. First communication device according to any preceding embodiment, wherein the circuitry is configured to select at least one tone plan from the tone plans as disclosed herein.20. First communication device according to any preceding embodiment, wherein the circuitry is configured to select a tone plan from a plurality of tone plans for each of 20 MHz, 40 MHz and 80 MHz bandwidth and / or to select a multiplex of one or more first tone plans comprising an allocation of non-contiguous tones to two or more non-contiguous resource units and one or more second tone plans comprising an allocation of contiguous tones to one or more contiguous resource units.21. Second communication device configured to communicate with a first communication device, the second communication device comprising circuitry configured to: receive a notification of a selected tone plan, the tone plan comprising an allocation of non-contiguous tones to two or more resource units, and an allocation of a resource unit allocated to the second communication device; andtransmit data to and / or receive data from the first communication device on the allocated resource unit.22. Second communication device according to embodiment 21 , wherein the circuitry is configured to transmit one or more transmission requirements in a status report to the first communication device.23. Second communication device according to embodiment 21 or 22, wherein the circuitry is configured not to modulate tones not belonging to one or more resource units allocated to the second communication device, in particular to assign zero transmit power to these tones.24. First communication method of a first communication device configured to communicate with one or more second communication devices, the first communication method comprising: selecting at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units; allocating one or more resource units of the selected tone plan to the one or more second communication devices; notifying the one or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmitting data to and / or receive data from the one or more second communication devices on the respectively allocated one or more resource units.25. Second communication method of a second communication device configured to communicate with a first communication device, the second communication method comprising: receiving a notification of a selected tone plan, the tone plan comprising an allocation of non-contiguous tones to two or more resource units, and an allocation of a resource unit allocated to the second communication device; andtransmitting data to and / or receive data from the first communication device on the allocated resource unit.26. A non-transitory computer-readable recording medium that stores therein a computer program product, which, when executed by a processor, causes the method according to embodiment 24 or 25 to be performed.27. A computer program comprising program code means for causing a computer to perform the steps of said method according to embodiment 24 or 25 when said computer program is carried out on a computer.

Claims

CLAIMS1 . First communication device configured to communicate with one or more second communication devices, the first communication device comprising circuitry configured to: select at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units; allocate one or more resource units of the selected tone plan to the one or more second communication devices; notify the one or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmit data to and / or receive data from the one or more second communication devices on the respectively allocated one or more resource units.

2. First communication device according to claim 1 , wherein the circuitry is configured to select the tone plan based on one or more transmission requirements, the transmission requirements including: the number of second communication devices to which the first communication device intends to transmit, the number of second communication devices which intend to transmit to the first communication device, data rate requirements of the one or more second communication device to which the first communication device intends to transmit and / or which intend to transmit to the first communication device, desired transmission power of the one or more second communication device to which the first communication device intends to transmit and / or which intend to transmit to the first communication device, desired transmission power of the first communication device that intends to transmit to the one or more second communication devices, and the number of second communication devices which may contend for transmission to the first communication device.

3. First communication device according to claim 1 , wherein the circuitry is configured to define one or more transmission parameters of the one or more second communication devices and to notify the one or more second communication devices of the defined transmission parameters.

4. First communication device according to claim 3, wherein the circuitry is configured to define, as one or more transmission parameters, one or more of transmit power, modulation coding scheme, number of spatial streams, length of transmission, bandwidth, channel sounding configuration, transmit power of first communication device, guard interval length, number and configuration of training fields, and target receive signal strength.

5. First communication device according to claim 1 , wherein the minimum distance between two subsequent tones allocated to a resource unit is two or more and wherein any remaining tones not allocated to any resource unit are set to zero.

6. First communication device according to claim 1 , wherein one or more tone plans of the plurality of tone plans each comprises a first set of tones allocated to a first resource unit, wherein subsequent tones of the first set have a predetermined minimum distance, and two or more further sets of tones are alternately allocated to two or more further resource units.

7. First communication device according to claim 1 , wherein one or more tone plans of the plurality of tone plans each comprises two or more sets of tones alternately allocated to two or more resource units.

8. First communication device according to claim 6 or 7, wherein one or more sets of tones each comprises two or more subsets of tones alternately allocated to two or more resource units.

9. First communication device according to claim 6 or 7,wherein one or more sets of tones each comprises one subset of tones with a predetermined minimum distance and two or more subsets of tones alternately allocated to two or more resource units.

10. First communication device according to according to claim 1 , wherein the number of available tones of a tone plan is determined by the number of 256, 512, or 1024 tones for a bandwidth of 20, 40, or 80 MHz, respectively, minus a number of DC tones and minus a number of guard tones.

11. First communication device according to claim 1 , wherein in a tone plan for a bandwidth of 20 MHz, a 106 tone resource unit has a minimum distance of 2, a 52 tone resource unit has a minimum distance of 4 and a 26 tone resource unit has a minimum distance of 9; and / or in a tone plan for a bandwidth of 40 MHz, a 242 tone resource unit has a minimum distance of 2, a 106 tone resource unit has a minimum distance of 4, a 52 tone resource unit has a minimum distance of 8 and a 26 tone resource unit has a minimum distance of 18; and / or in a tone plan for a bandwidth of 80 MHz, a 484 tone resource unit has a minimum distance of 2, a 242 tone resource unit has a minimum distance of 4, a 106 tone resource unit has a minimum distance of 8, a 52 tone resource unit has a minimum distance of 16 and a 26 tone resource unit has a minimum distance of 36.

12. First communication device according to claim 6 or 7, wherein a tone plan comprises single zero leftover tones that are placed as exceptions in between two subsequent tones and / or at the end of the tones and / or as part of DC tones.

13. First communication device according to claim 1 , wherein the circuitry is configured to select at least one tone plan from the following tone plans, wherein the following numbers indicate the first half of tones with positive indices and the second half of tones have the same number with negative index and wherein optionally zero leftover tones are inserted between any two numbers and / or added at the end of a sequence of numbers:A) Tone planes for 20 MHz bandwidth:A1) First tone plan:Allocation for a first resource unit (dRU_A; 13 tones with positive indices):I I , 20, 29, 38, 47, 56, 65, 74, 83, 92, 101 , 110, 119Allocation for a second resource unit (dRU_B; 53 tones with positive indices):4, 6, 8, 10, 13, 15, 17, 19, 22, 24, 26, 28, 31 , 33, 35, 37, 40, 42, 44, 46, 49, 51 , 53, 55, 58,60, 62, 64, 67, 69, 71 , 73, 76, 78, 80, 82, 85, 87, 89, 91 , 94, 96, 98, 100, 103, 105, 107, 109, 112, 114, 116, 118, 121Allocation for a third resource unit (dRU_C; 53 tones with positive indices):5, 7, 9, 12, 14, 16, 18, 21 , 23, 25, 27, 30, 32, 34, 36, 39, 41 , 43, 45, 48, 50, 52, 54, 57, 59,61 , 63, 66, 68, 70, 72, 75, 77, 79, 81 , 84, 86, 88, 90, 93, 95, 97, 99, 102, 104, 106, 108,I I I , 113, 115, 117, 120, 122.A2) Second tone plan:Allocation for a first resource unit (dRU_A; unchanged, as for first level):I I , 20, 29, 38, 47, 56, 65, 74, 83, 92, 101 , 110, 119Allocation for a second resource unit (dRU_B_p1 ; from dRU_B; 26 tones with positive indices):4, 8, 13, 17, 22, 26, 31 , 35, 40, 44, 49, 53, 58, 62, 67, 71 , 76, 80, 85, 89, 94, 98, 103, 107, 112, 116Allocation for a third resource unit (dRU_B_p2; from dRU_B; 26 tones with positive indices):6, 10, 15, 19, 24, 28, 33, 37, 42, 46, 51 , 55, 60, 64, 69, 73, 78, 82, 87, 91 , 96, 100, 105, 109, 114, 118Allocation for a fourth resource unit (dRU_C_p1 ; from dRU_C; 26 tones with positive indices):5, 9, 14, 18, 23, 27, 32, 36, 41 , 45, 50, 54, 59, 63, 68, 72, 77, 81 , 86, 90, 95, 99, 104, 108, 113, 117Allocation for a fifth resource unit (dRU_C_p2; from dRU_C; 26 tones with positive indices):7, 12, 16, 21 , 25, 30, 34, 39, 43, 48, 52, 57, 61 , 66, 70, 75, 79, 84, 88, 93, 97, 102, 106,I I I , 115, 120.A3) Third tone plan:Allocation for a first resource unit (dRU_A; unchanged, as in first tone plan):11 , 20, 29, 38, 47, 56, 65, 74, 83, 92, 101 , 110, 119Allocation for a second resource unit (dRU_B_p1_p1 ; from dRU_B_p1 ; 13 tones with positive indices):4, 13, 22, 31 , 40, 49, 58, 67, 76, 85, 94, 103, 112Allocation for a third resource unit (dRU_B_p1_p2; from dRU_B_p1 ; 13 tones with positive indices):8, 17, 26, 35, 44, 53, 62, 71, 80, 89, 98, 107, 116Allocation for a fourth resource unit (dRU_B_p2_p1 ; from dRU_B_p1 ; 13 tones with positive indices):6, 15, 24, 33, 42, 51, 60, 69, 78, 87, 96, 105, 114Allocation for a fifth resource unit (dRU_B_p2_p2; from dRU_B_p1; 13 tones with positive indices):10, 19, 28, 37, 46, 55, 64, 73, 82, 91 , 100, 109, 118Allocation for a sixth resource unit (dRU_C_p1_p1 ; from dRU_B_p1 ; 13 tones with positive indices):5, 14, 23, 32, 41 , 50, 59, 68, 77, 86, 95, 104, 113Allocation for a seventh resource unit (dRU_C_p1_p2; from dRU_B_p1 ; 13 tones with positive indices):9, 18, 27, 36, 45, 54, 63, 72, 81 , 90, 99, 108, 117Allocation for an eighth resource unit (dRU_C_p2_p1 ; from dRU_B_p1 ; 13 tones with positive indices):7, 16, 25, 34, 43, 52, 61 , 70, 79, 88, 97, 106, 115Allocation for a ninth resource unit (dRU_C_p2_p2; from dRU_B_p1 ; 13 tones with positive indices):12, 21 , 30, 39, 48, 57, 66, 75, 84, 93, 102, 111, 120.B) Tone planes for 40 MHz bandwidth:B1) First tone plan:Allocation for a first resource unit (dRU_A; 121 tones with positive indices):3, 5, 7, 9, 11 , 13, 15, 17, 19, 21 , 23, 25, 27, 29, 31, 33, 35, 37, 39, 41 , 43, 45, 47, 49, 51 , 53, 55, 57, 59, 61, 63, 65, 67, 69, 71 , 73, 75, 77, 79, 81 , 83, 85, 87, 89, 91 , 93, 95, 97, 99, 101 , 103, 105, 107, 109, 111 , 113, 115, 117, 119, 121, 123, 125, 127, 129, 131 , 133, 135, 137, 139, 141 , 143, 145, 147, 149, 151 , 153, 155, 157, 159, 161 , 163, 165, 167, 169, 171 ,173, 175, 177, 179, 181 , 183, 185, 187, 189, 191, 193, 195, 197, 199, 201 , 203, 205, 207, 209, 211 , 213, 215, 217, 219, 221 , 223, 225, 227, 229, 231 , 233, 235, 237, 239, 241, 243 Allocation for a second resource unit (dRU_B; 121 tones with positive indices):4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52,54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134,136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170,172, 174, 176, 178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198, 200, 202, 204, 206,208, 210, 212, 214, 216, 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242,244.B2) Second tone plan:Allocation for a first resource unit (dRU_A_p1 ; 13 tones with positive indices):17, 35, 53, 71 , 89, 107, 125, 143, 161 , 179, 197, 215, 233Allocation for a second resource unit (dRU_A_p2; 53 tones with positive indices):3, 7, 11 , 15, 21, 25, 29, 33, 39, 43, 47, 51 , 57, 61, 65, 69, 75, 79, 83, 87, 93, 97, 101, 105,111 , 115, 119, 123, 129, 133, 137, 141 , 147, 151, 155, 159, 165, 169, 173, 177, 183, 187,191 , 195, 201 , 205, 209, 213, 219, 223, 227, 231, 237Allocation for a third resource unit (dRU_A_p3; 53 tones with positive indices):5, 9, 13, 19, 23, 27, 31, 37, 41 , 45, 49, 55, 59, 63, 67, 73, 77, 81 , 85, 91 , 95, 99, 103, 109, 113, 117, 121 , 127, 131 , 135, 139, 145, 149, 153, 157, 163, 167, 171 , 175, 181 , 185, 189, 193, 199, 203, 207, 211 , 217, 221 , 225, 229, 235, 239Allocation for a fourth resource unit (dRU_B_p1 ; 13 tones with positive indices):18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234Allocation for a fifth resource unit (dRU_B_p2; 53 tones with positive indices):4, 8, 12, 16, 22, 26, 30, 34, 40, 44, 48, 52, 58, 62, 66, 70, 76, 80, 84, 88, 94, 98, 102, 106,112, 116, 120, 124, 130, 134, 138, 142, 148, 152, 156, 160, 166, 170, 174, 178, 184, 188,192, 196, 202, 206, 210, 214, 220, 224, 228, 232, 238Allocation for a sixth resource unit (dRU_B_p3; 53 tones with positive indices):6, 10, 14, 20, 24, 28, 32, 38, 42, 46, 50, 56, 60, 64, 68, 74, 78, 82, 86, 92, 96, 100, 104,110, 114, 118, 122, 128, 132, 136, 140, 146, 150, 154, 158, 164, 168, 172, 176, 182, 186,190, 194, 200, 204, 208, 212, 218, 222, 226, 230, 236, 240.B3) Third tone plan:Allocation for a first resource unit (dRU_A_p1 ; 13 tones with positive indices):17, 35, 53, 71 , 89, 107, 125, 143, 161 , 179, 197, 215, 233Allocation for a second resource unit (dRU_A_p2_p1 ; 26 tones with positive indices -):3, 11 , 21 , 29, 39, 47, 57, 65, 75, 83, 93, 101 , 111, 119, 129, 137, 147, 155, 165, 173, 183, 191 , 201 , 209, 219, 227Allocation for a third resource unit (dRU_A_p2_p2; 26 tones with positive indices):7, 15, 25, 33, 43, 51, 61 , 69, 79, 87, 97, 105, 115, 123, 133, 141 , 151 , 159, 169, 177, 187,195, 205, 213, 223, 231Allocation for a fourth resource unit (dRU_A_p3_p1 ; 26 tones with positive indices):5, 13, 23, 31 , 41 , 49, 59, 67, 77, 85, 95, 103, 113, 121, 131 , 139, 149, 157, 167, 175, 185,193, 203, 211 , 221, 229Allocation for a fifth resource unit (dRU_A_p3_p2; 26 tones with positive indices):9, 19, 27, 37, 45, 55, 63, 73, 81 , 91 , 99, 109, 117, 127, 135, 145, 153, 163, 171 , 181, 189, 199, 207, 217, 225, 235Allocation for a sixth resource unit (dRU_B_p1 ; 13 tones with positive indices):18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234Allocation for a seventh resource unit (dRU_B_p2_p1 ; 26 tones with positive indices):4, 12, 22, 30, 40, 48, 58, 66, 76, 84, 94, 102, 112, 120, 130, 138, 148, 156, 166, 174, 184, 192, 202, 210, 220, 228Allocation for an eighth resource unit (dRU_B_p2_p2; 26 tones with positive indices):8, 16, 26, 34, 44, 52, 62, 70, 80, 88, 98, 106, 116, 124, 134, 142, 152, 160, 170, 178, 188,196, 206, 214, 224, 232Allocation for a ninth resource unit (dRU_B_p3_p1; 26 tones with positive indices):6, 14, 24, 32, 42, 50, 60, 68, 78, 86, 96, 104, 114, 122, 132, 140, 150, 158, 168, 176, 186,194, 204, 212, 222, 230Allocation for a tenth resource unit (dRU_B_p3_p2; 26 tones with positive indices):10, 20, 28, 38, 46, 56, 64, 74, 82, 92, 100, 110, 118, 128, 136, 146, 154, 164, 172, 182, 190, 200, 208, 218, 226, 236.B4) Fourth tone plan:Allocation for a first resource unit (dRU_A_p1 ; 13 tones with positive indices):17, 35, 53, 71 , 89, 107, 125, 143, 161 , 179, 197, 215, 233Allocation for a second resource unit (dRU_A_p2_p1_p1 ; 13 tones with positive indices):3, 21 , 39, 57, 75, 93, 111, 129, 147, 165, 183, 201, 219Allocation for a third resource unit (dRU_A_p2_p1_p2; 13 tones with positive indices): 11 , 29, 47, 65, 83, 101, 119, 137, 155, 173, 191 , 209, 227Allocation for a fourth resource unit (dRU_A_p2_p2_p1 ; 13 tones with positive indices):7, 25, 43, 61 , 79, 97, 115, 133, 151 , 169, 187, 205, 223Allocation for a fifth resource unit (dRU_A_p2_p2_p2; 13 tones with positive indices):15, 33, 51 , 69, 87, 105, 123, 141 , 159, 177, 195, 213, 231Allocation for a sixth resource unit (dRU_A_p3_p1_p1 ; 13 tones with positive indices):5, 23, 41 , 59, 77, 95, 113, 131, 149, 167, 185, 203, 221Allocation for a seventh resource unit (dRU_A_p3_p1_p2; 13 tones with positive indices):13, 31 , 49, 67, 85, 103, 121, 139, 157, 175, 193, 211, 229Allocation for an eighth resource unit (dRU_A_p3_p2_p1 ; 13 tones with positive indices):9, 27, 45, 63, 81 , 99, 117, 135, 153, 171 , 189, 207, 225Allocation for a ninth resource unit (dRU_A_p3_p2_p2; 13 tones with positive indices):19, 37, 55, 73, 91, 109, 127, 145, 163, 181 , 199, 217, 235Allocation for a tenth resource unit (dRU_B_p1; 13 tones with positive indices):18, 36, 54, 72, 90, 108, 126, 144, 162, 180, 198, 216, 234Allocation for an eleventh resource unit (dRU_B_p2_p1_p1 ; 13 tones with positive indices):4, 22, 40, 58, 76, 94, 112, 130, 148, 166, 184, 202, 220Allocation for a twelfth resource unit (dRU_B_p2_p1_p2; 13 tones with positive indices):12, 30, 48, 66, 84, 102, 120, 138, 156, 174, 192, 210, 228Allocation for a 13th resource unit (dRU_B_p2_p2_p1 ; 13 tones with positive indices):8, 26, 44, 62, 80, 98, 116, 134, 152, 170, 188, 206, 224Allocation for a 14th resource unit (dRU_B_p2_p2_p2; 13 tones with positive indices):16, 34, 52, 70, 88, 106, 124, 142, 160, 178, 196, 214, 232Allocation for a 15th resource unit (dRU_B_p3_p1_p1 ; 13 tones with positive indices):6, 24, 42, 60, 78, 96, 114, 132, 150, 168, 186, 204, 222Allocation for a 16th resource unit (dRU_B_p3_p1_p2; 13 tones with positive indices):14, 32, 50, 68, 86, 104, 122, 140, 158, 176, 194, 212, 230Allocation for a 17th resource unit (dRU_B_p3_p2_p1 ; 13 tones with positive indices):10, 28, 46, 64, 82, 100, 118, 136, 154, 172, 190, 208, 226Allocation for an 18th resource unit (dRU_B_p3_p2_p2; 13 tones with positive indices):20, 38, 56, 74, 92, 110, 128, 146, 164, 182, 200, 218, 236C) Tone planes for 80 MHz bandwidth:C1) First tone plan:Allocation for a first resource unit (dRU_A; 13 tones with positive indices):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B; 242 tones with positive indices):4, 6, 8, 10, 12, 14, 16, 18, 21 , 23, 25, 27, 29, 31 , 33, 35, 37, 39, 41 , 43, 45, 47, 49, 51, 53,55, 57, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 97, 99, 101 ,103, 105, 107, 109, 111 , 113, 115, 117, 119, 121, 123, 125, 127, 129, 131 , 133, 136, 138,140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 173, 175,177, 179, 181 , 183, 185, 187, 189, 191 , 193, 195, 197, 199, 201 , 203, 205, 207, 209, 212,214, 216, 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 249,251 , 253, 255, 257, 259, 261 , 263, 265, 267, 269, 271, 273, 275, 277, 279, 281 , 283, 285,288, 290, 292, 294, 296, 298, 300, 302, 304, 306, 308, 310, 312, 314, 316, 318, 320, 322,325, 327, 329, 331, 333, 335, 337, 339, 341 , 343, 345, 347, 349, 351 , 353, 355, 357, 359,361 , 364, 366, 368, 370, 372, 374, 376, 378, 380, 382, 384, 386, 388, 390, 392, 394, 396,398, 401 , 403, 405, 407, 409, 411 , 413, 415, 417, 419, 421 , 423, 425, 427, 429, 431 , 433,435, 437, 440, 442, 444, 446, 448, 450, 452, 454, 456, 458, 460, 462, 464, 466, 468, 470,472, 474, 477, 479, 481 , 483, 485, 487, 489, 491, 493, 495, 497, 499Allocation for a third resource unit (dRU_C; 242 tones with positive indices -):5, 7, 9, 11 , 13, 15, 17, 19, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54,56, 59, 61 , 63, 65, 67, 69, 71 , 73, 75, 77, 79, 81 , 83, 85, 87, 89, 91 , 93, 95, 98, 100, 102,104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 135, 137, 139,141 , 143, 145, 147, 149, 151 , 153, 155, 157, 159, 161, 163, 165, 167, 169, 171 , 174, 176,178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198, 200, 202, 204, 206, 208, 211 , 213,215, 217, 219, 221, 223, 225, 227, 229, 231 , 233, 235, 237, 239, 241 , 243, 245, 247, 250,252, 254, 256, 258, 260, 262, 264, 266, 268, 270, 272, 274, 276, 278, 280, 282, 284, 287,289, 291 , 293, 295, 297, 299, 301 , 303, 305, 307, 309, 311 , 313, 315, 317, 319, 321 , 323,326, 328, 330, 332, 334, 336, 338, 340, 342, 344, 346, 348, 350, 352, 354, 356, 358, 360,363, 365, 367, 369, 371 , 373, 375, 377, 379, 381, 383, 385, 387, 389, 391 , 393, 395, 397,399, 402, 404, 406, 408, 410, 412, 414, 416, 418, 420, 422, 424, 426, 428, 430, 432, 434,436, 439, 441 , 443, 445, 447, 449, 451 , 453, 455, 457, 459, 461 , 463, 465, 467, 469, 471 ,473, 475, 478, 480, 482, 484, 486, 488, 490, 492, 494, 496, 498, 500.C2) Second tone plan:Allocation for a first resource unit (dRU_A; 13 tones with positive indices):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1 ; 121 tones with positive indices):4, 8, 12, 16, 21, 25, 29, 33, 37, 41 , 45, 49, 53, 57, 62, 66, 70, 74, 78, 82, 86, 90, 94, 99,103, 107, 111 , 115, 119, 123, 127, 131 , 136, 140, 144, 148, 152, 156, 160, 164, 168, 173,177, 181 , 185, 189, 193, 197, 201 , 205, 209, 214, 218, 222, 226, 230, 234, 238, 242, 246,251 , 255, 259, 263, 267, 271 , 275, 279, 283, 288, 292, 296, 300, 304, 308, 312, 316, 320,325, 329, 333, 337, 341 , 345, 349, 353, 357, 361, 366, 370, 374, 378, 382, 386, 390, 394,398, 403, 407, 411, 415, 419, 423, 427, 431 , 435, 440, 444, 448, 452, 456, 460, 464, 468,472, 477, 481 , 485, 489, 493, 497Allocation for a third resource unit (dRU_B_p2; 121 tones with positive indices):6, 10, 14, 18, 23, 27, 31 , 35, 39, 43, 47, 51 , 55, 60, 64, 68, 72, 76, 80, 84, 88, 92, 97, 101 ,105, 109, 113, 117, 121 , 125, 129, 133, 138, 142, 146, 150, 154, 158, 162, 166, 170, 175,179, 183, 187, 191, 195, 199, 203, 207, 212, 216, 220, 224, 228, 232, 236, 240, 244, 249,253, 257, 261 , 265, 269, 273, 277, 281 , 285, 290, 294, 298, 302, 306, 310, 314, 318, 322,327, 331 , 335, 339, 343, 347, 351 , 355, 359, 364, 368, 372, 376, 380, 384, 388, 392, 396,401 , 405, 409, 413, 417, 421 , 425, 429, 433, 437, 442, 446, 450, 454, 458, 462, 466, 470,474, 479, 483, 487, 491 , 495, 499Allocation for a fourth resource unit (dRU_C_p1 ; 121 tones with positive indices):5, 9, 13, 17, 22, 26, 30, 34, 38, 42, 46, 50, 54, 59, 63, 67, 71 , 75, 79, 83, 87, 91 , 95, 100,104, 108, 112, 116, 120, 124, 128, 132, 137, 141, 145, 149, 153, 157, 161 , 165, 169, 174,178, 182, 186, 190, 194, 198, 202, 206, 211 , 215, 219, 223, 227, 231 , 235, 239, 243, 247,252, 256, 260, 264, 268, 272, 276, 280, 284, 289, 293, 297, 301 , 305, 309, 313, 317, 321 ,326, 330, 334, 338, 342, 346, 350, 354, 358, 363, 367, 371 , 375, 379, 383, 387, 391 , 395,399, 404, 408, 412, 416, 420, 424, 428, 432, 436, 441, 445, 449, 453, 457, 461 , 465, 469,473, 478, 482, 486, 490, 494, 498Allocation for a fifth resource unit (dRU_C_p2;121 tones with positive indices):7, 11 , 15, 19, 24, 28, 32, 36, 40, 44, 48, 52, 56, 61, 65, 69, 73, 77, 81 , 85, 89, 93, 98, 102,106, 110, 114, 118, 122, 126, 130, 135, 139, 143, 147, 151 , 155, 159, 163, 167, 171, 176,180, 184, 188, 192, 196, 200, 204, 208, 213, 217, 221, 225, 229, 233, 237, 241 , 245, 250,254, 258, 262, 266, 270, 274, 278, 282, 287, 291, 295, 299, 303, 307, 311 , 315, 319, 323,328, 332, 336, 340, 344, 348, 352, 356, 360, 365, 369, 373, 377, 381 , 385, 389, 393, 397,402, 406, 410, 414, 418, 422, 426, 430, 434, 439, 443, 447, 451 , 455, 459, 463, 467, 471 , 475, 480, 484, 488, 492, 496, 500.C3) Third tone plan:Allocation for a first resource unit (dRU_A; 13 tones with positive indices):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1_p1 ; 3 tones with positive indices):33, 70, 107, 144, 181 , 218, 255, 292, 329, 366, 403, 440, 477Allocation for a third resource unit (dRU_B_p1_p2; 53 tones with positive indices):4, 12, 21 , 29, 41 , 49, 57, 66, 78, 86, 94, 103, 115, 123, 131 , 140, 152, 160, 168, 177, 189,197, 205, 214, 226, 234, 242, 251 , 263, 271 , 279, 288, 300, 308, 316, 325, 337, 345, 353, 361 , 374, 382, 390, 398, 411 , 419, 427, 435, 448, 456, 464, 472, 485Allocation for a fourth resource unit (dRU_B_p1_p3; 53 tones with positive indices):8, 16, 25, 37, 45, 53, 62, 74, 82, 90, 99, 111 , 119, 127, 136, 148, 156, 164, 173, 185, 193, 201 , 209, 222, 230, 238, 246, 259, 267, 275, 283, 296, 304, 312, 320, 333, 341 , 349, 357, 370, 378, 386, 394, 407, 415, 423, 431 , 444, 452, 460, 468, 481 , 489Allocation for a fifth resource unit (dRU_B_p2_p1 ; 13 tones with positive indices): 35, 72, 109, 146, 183, 220, 257, 294, 331 , 368, 405, 442, 479Allocation for a sixth resource unit (dRU_B_p2_p2; 53 tones with positive indices):6, 14, 23, 31 , 43, 51, 60, 68, 80, 88, 97, 105, 117, 125, 133, 142, 154, 162, 170, 179, 191 ,199, 207, 216, 228, 236, 244, 253, 265, 273, 281, 290, 302, 310, 318, 327, 339, 347, 355,364, 376, 384, 392, 401 , 413, 421 , 429, 437, 450, 458, 466, 474, 487Allocation for a seventh resource unit (dRU_B_p2_p3; 53 tones with positive indices): 10, 18, 27, 39, 47, 55, 64, 76, 84, 92, 101 , 113, 121 , 129, 138, 150, 158, 166, 175, 187, 195, 203, 212, 224, 232, 240, 249, 261 , 269, 277, 285, 298, 306, 314, 322, 335, 343, 351 , 359, 372, 380, 388, 396, 409, 417, 425, 433, 446, 454, 462, 470, 483, 491Allocation for an eighth resource unit (dRU_C_p1_p1 ; 13 tones with positive indices):34, 71 , 108, 145, 182, 219, 256, 293, 330, 367, 404, 441 , 478Allocation for a ninth resource unit (dRU_C_p1_p2; 53 tones with positive indices):5, 13, 22, 30, 42, 50, 59, 67, 79, 87, 95, 104, 116, 124, 132, 141 , 153, 161 , 169, 178, 190,198, 206, 215, 227, 235, 243, 252, 264, 272, 280, 289, 301 , 309, 317, 326, 338, 346, 354, 363, 375, 383, 391, 399, 412, 420, 428, 436, 449, 457, 465, 473, 486Allocation for a tenth resource unit (dRU_C_p1_p3; 53 tones with positive indices):9, 17, 26, 38, 46, 54, 63, 75, 83, 91 , 100, 112, 120, 128, 137, 149, 157, 165, 174, 186,194, 202, 211 , 223, 231 , 239, 247, 260, 268, 276, 284, 297, 305, 313, 321 , 334, 342, 350, 358, 371 , 379, 387, 395, 408, 416, 424, 432, 445, 453, 461 , 469, 482, 490Allocation for an eleventh resource unit (dRU_C_p2_p1 ; 13 tones with positive indices): 36, 73, 110, 147, 184, 221 , 258, 295, 332, 369, 406, 443, 480Allocation for a twelfth resource unit (dRU_C_p2_p2; 53 tones with positive indices): 7, 15, 24, 32, 44, 52, 61, 69, 81 , 89, 98, 106, 118, 126, 135, 143, 155, 163, 171 , 180, 192,200, 208, 217, 229, 237, 245, 254, 266, 274, 282, 291, 303, 311 , 319, 328, 340, 348, 356,365, 377, 385, 393, 402, 414, 422, 430, 439, 451, 459, 467, 475, 488Allocation for a 13th resource unit (dRU_C_p2_p3; 53 tones with positive indices):11 , 19, 28, 40, 48, 56, 65, 77, 85, 93, 102, 114, 122, 130, 139, 151 , 159, 167, 176, 188, 196, 204, 213, 225, 233, 241 , 250, 262, 270, 278, 287, 299, 307, 315, 323, 336, 344, 352,360, 373, 381 , 389, 397, 410, 418, 426, 434, 447, 455, 463, 471 , 484, 492.C4) Fourth tone plan:Allocation for a first resource unit (dRU_A; 13 tones with positive indices):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1_p1 ; 13 tones with positive indices): 33, 70, 107, 144, 181 , 218, 255, 292, 329, 366, 403, 440, 477Allocation for a third resource unit (dRU_B_p1_p2_p1 ; 26 tones with positive indices):12, 29, 49, 66, 86, 103, 123, 140, 160, 177, 197, 214, 234, 251 , 271 , 288, 308, 325, 345,361 , 382, 398, 419, 435, 456, 472Allocation for a fourth resource unit (dRU_B_p1_p2_p2; 26 tones with positive indices):21 , 41 , 57, 78, 94, 115, 131 , 152, 168, 189, 205, 226, 242, 263, 279, 300, 316, 337, 353, 374, 390, 411 , 427, 448, 464, 485Allocation for a fifth resource unit (dRU_B_p1_p3_p1 ; 26 tones with positive indices): 16, 37, 53, 74, 90, 111 , 127, 148, 164, 185, 201 , 222, 238, 259, 275, 296, 312, 333, 349, 370, 386, 407, 423, 444, 460, 481Allocation for a sixth resource unit (dRU_B_p1_p3_p2; 26 tones with positive indices): 25, 45, 62, 82, 99, 119, 136, 156, 173, 193, 209, 230, 246, 267, 283, 304, 320, 341 , 357, 378, 394, 415, 431, 452, 468, 489Allocation for a seventh resource unit (dRU_B_p2_p1 ; 13 tones with positive indices): 35, 72, 109, 146, 183, 220, 257, 294, 331 , 368, 405, 442, 479Allocation for an eighth resource unit (dRU_B_p2_p2_p1 ; 26 tones with positive indices):14, 31 , 51, 68, 88, 105, 125, 142, 162, 179, 199, 216, 236, 253, 273, 290, 310, 327, 347,364, 384, 401 , 421, 437, 458, 474Allocation for a ninth resource unit (dRU_B_p2_p2_p2; 26 tones with positive indices):23, 43, 60, 80, 97, 117, 133, 154, 170, 191 , 207, 228, 244, 265, 281 , 302, 318, 339, 355,376, 392, 413, 429, 450, 466, 487Allocation for a tenth resource unit (dRU_B_p2_p3_p1 ; 26 tones with positive indices): 18, 39, 55, 76, 92, 113, 129, 150, 166, 187, 203, 224, 240, 261 , 277, 298, 314, 335, 351 , 372, 388, 409, 425, 446, 462, 483Allocation for an eleventh resource unit (dRU_B_p2_p3_p2; 26 tones with positive indices): 27, 47, 64, 84, 101 , 121, 138, 158, 175, 195, 212, 232, 249, 269, 285, 306, 322, 343, 359, 380, 396, 417, 433, 454, 470, 491Allocation for a twelfth resource unit (dRU_C_p1_p1 ; 13 tones with positive indices): 34, 71 , 108, 145, 182, 219, 256, 293, 330, 367, 404, 441 , 478Allocation for a 13th resource unit (dRU_C_p1_p2_p1 ; 26 tones with positive indices):13, 30, 50, 67, 87, 104, 124, 141 , 161, 178, 198, 215, 235, 252, 272, 289, 309, 326, 346, 363, 383, 399, 420, 436, 457, 473Allocation for a 14th resource unit (dRU_C_p1_p2_p2; 26 tones with positive indices):22, 42, 59, 79, 95, 116, 132, 153, 169, 190, 206, 227, 243, 264, 280, 301, 317, 338, 354, 375, 391 , 412, 428, 449, 465, 486Allocation for a 15th resource unit (dRU_C_p1_p3_p1 ; 26 tones with positive indices): 17, 38, 54, 75, 91 , 112, 128, 149, 165, 186, 202, 223, 239, 260, 276, 297, 313, 334, 350, 371 , 387, 408, 424, 445, 461 , 482Allocation for a 16th resource unit (dRU_C_p1_p3_p2; 26 tones with positive indices): 26, 46, 63, 83, 100, 120, 137, 157, 174, 194, 211, 231, 247, 268, 284, 305, 321, 342, 358, 379, 395, 416, 432, 453, 469, 490Allocation for a 17th resource unit (dRU_C_p2_p1; 13 tones with positive indices):36, 73, 110, 147, 184, 221 , 258, 295, 332, 369, 406, 443, 480Allocation for an 18th resource unit (dRU_C_p2_p2_p1 ; 26 tones with positive indices):15, 32, 52, 69, 89, 106, 126, 143, 163, 180, 200, 217, 237, 254, 274, 291, 311, 328, 348,365, 385, 402, 422, 439, 459, 475Allocation for a 19th resource unit (dRU_C_p2_p2_p2; 26 tones with positive indices):24, 44, 61, 81, 98, 118, 135, 155, 171, 192, 208, 229, 245, 266, 282, 303, 319, 340, 356,377, 393, 414, 430, 451 , 467, 488Allocation for a 20th resource unit (dRU_C_p2_p3_p1 ; 26 tones with positive indices):19, 40, 56, 77, 93, 114, 130, 151 , 167, 188, 204, 225, 241 , 262, 278, 299, 315, 336, 352, 373, 389, 410, 426, 447, 463, 484Allocation for a 21st resource unit (dRU_C_p2_p3_p2; 26 tones with positive indices):28, 48, 65, 85, 102, 122, 139, 159, 176, 196, 213, 233, 250, 270, 287, 307, 323, 344, 360, 381 , 397, 418, 434, 455, 471 , 492C5) Fifth Tone plan:Allocation for a first resource unit (dRU_A; 13 tones with positive indices):20, 58, 96, 134, 172, 210, 248, 286, 324, 362, 400, 438, 476Allocation for a second resource unit (dRU_B_p1_p1 ; 13 tones with positive indices):33, 70, 107, 144, 181 , 218, 255, 292, 329, 366, 403, 440, 477Allocation for a third resource unit (dRU_B_p1_p2_p1_p1 ; 13 tones with positive indices):12, 49, 86, 123, 160, 197, 234, 271 , 308, 345, 382, 419, 456Allocation for a fourth resource unit (dRU_B_p1_p2_p1_p2; 13 tones with positive indices):29, 66, 103, 140, 177, 214, 251 , 288, 325, 361 , 398, 435, 472Allocation for a fifth resource unit (dRU_B_p1_p2_p2_p1 ; 13 tones with positive indices):21 , 57, 94, 131 , 168, 205, 242, 279, 316, 353, 390, 427, 464Allocation for a sixth resource unit (dRU_B_p1_p2_p2_p2; 13 tones with positive indices):41 , 78, 115, 152, 189, 226, 263, 300, 337, 374, 411 , 448, 485Allocation for an eighth resource unit (dRU_B_p1_p3_p1_p1 ; 13 tones with positive indices):16, 53, 90, 127, 164, 201, 238, 275, 312, 349, 386, 423, 460Allocation for a ninth resource unit (dRU_B_p1_p3_p1_p2; 13 tones with positive indices):37, 74, 111 , 148, 185, 222, 259, 296, 333, 370, 407, 444, 481Allocation for a tenth resource unit (dRU_B_p1_p3_p2_p1 ; 13 tones with positive indices):25, 62, 99, 136, 173, 209, 246, 283, 320, 357, 394, 431 , 468Allocation for an eleventh resource unit (dRU_B_p1_p3_p2_p2; 13 tones with positive indices):45, 82, 119, 156, 193, 230, 267, 304, 341 , 378, 415, 452, 489Allocation for a twelfth resource unit (dRU_B_p2_p1 ; 13 tones with positive indices):35, 72, 109, 146, 183, 220, 257, 294, 331 , 368, 405, 442, 479Allocation for a 13th resource unit (dRU_B_p2_p2_p1_p1 ; 13 tones with positive indices):14, 51 , 88, 125, 162, 199, 236, 273, 310, 347, 384, 421 , 458Allocation for a 14th resource unit (dRU_B_p2_p2_p1_p2; 13 tones with positive indices): 31 , 68, 105, 142, 179, 216, 253, 290, 327, 364, 401 , 437, 474Allocation for a 15th resource unit (dRU_B_p2_p2_p2_p1 ; 13 tones with positive indices):23, 60, 97, 133, 170, 207, 244, 281 , 318, 355, 392, 429, 466Allocation for a 16th resource unit (dRU_B_p2_p2_p2_p2; 13 tones with positive indices):43, 80, 117, 154, 191 , 228, 265, 302, 339, 376, 413, 450, 487Allocation for a 17th resource unit (dRU_B_p2_p3_p1_p1 ; 13 tones with positive indices):18, 55, 92, 129, 166, 203, 240, 277, 314, 351 , 388, 425, 462Allocation for an 18th resource unit (dRU_B_p2_p3_p1_p2; 13 tones with positive indices): 39, 76, 113, 150, 187, 224, 261 , 298, 335, 372, 409, 446, 483Allocation for a 19th resource unit (dRU_B_p2_p3_p2_p1 ; 13 tones with positive indices):27, 64, 101 , 138, 175, 212, 249, 285, 322, 359, 396, 433, 470Allocation for a 20th resource unit (dRU_B_p2_p3_p2_p2; 13 tones with positive indices):47, 84, 121 , 158, 195, 232, 269, 306, 343, 380, 417, 454, 491Allocation for a 21st resource unit (dRU_C_p1_p1; 13 tones with positive indices):34, 71 , 108, 145, 182, 219, 256, 293, 330, 367, 404, 441 , 478Allocation for a 22nd resource unit (dRU_C_p1_p2_p1_p1 ; 13 tones with positive indices):13, 50, 87, 124, 161, 198, 235, 272, 309, 346, 383, 420, 457Allocation for a 23rd resource unit (dRU_C_p1_p2_p1_p2; 13 tones with positive indices):30, 67, 104, 141 , 178, 215, 252, 289, 326, 363, 399, 436, 473Allocation for a 24th resource unit (dRU_C_p1_p2_p2_p1 ; 13 tones with positive indices):22, 59, 95, 132, 169, 206, 243, 280, 317, 354, 391, 428, 465Allocation for a 25th resource unit (dRU_C_p1_p2_p2_p2; 13 tones with positive indices):42, 79, 116, 153, 190, 227, 264, 301 , 338, 375, 412, 449, 486Allocation for a 26th resource unit (dRU_C_p1_p3_p1_p1 ; 13 tones with positive indices):17, 54, 91 , 128, 165, 202, 239, 276, 313, 350, 387, 424, 461Allocation for a 27th resource unit (dRU_C_p1_p3_p1_p2; 13 tones with positive indices):38, 75, 112, 149, 186, 223, 260, 297, 334, 371 , 408, 445, 482Allocation for a 28th resource unit (dRU_C_p1_p3_p2_p1 ; 13 tones with positive indices):26, 63, 100, 137, 174, 211 , 247, 284, 321 , 358, 395, 432, 469Allocation for a 29th resource unit (dRU_C_p1_p3_p2_p2; 13 tones with positive indices):46, 83, 120, 157, 194, 231 , 268, 305, 342, 379, 416, 453, 490Allocation for a 30th resource unit (dRU_C_p2_p1; 13 tones with positive indices):36, 73, 110, 147, 184, 221 , 258, 295, 332, 369, 406, 443, 480Allocation for a 31st resource unit (dRU_C_p2_p2_p1_p1 ; 13 tones with positive indices): 15, 52, 89, 126, 163, 200, 237, 274, 311 , 348, 385, 422, 459Allocation for a 32nd resource unit (dRU_C_p2_p2_p1_p2; 13 tones with positive indices): 32, 69, 106, 143, 180, 217, 254, 291 , 328, 365, 402, 439, 475Allocation for a 33rd resource unit (dRU_C_p2_p2_p2_p1 ; 13 tones with positive indices): 24, 61 , 98, 135, 171, 208, 245, 282, 319, 356, 393, 430, 467Allocation for a 34th resource unit (dRU_C_p2_p2_p2_p2; 13 tones with positive indices): 44, 81 , 118, 155, 192, 229, 266, 303, 340, 377, 414, 451 , 488Allocation for a 35th resource unit (dRU_C_p2_p3_p1_p1 ; 13 tones with positive indices): 19, 56, 93, 130, 167, 204, 241, 278, 315, 352, 389, 426, 463Allocation for a 36th resource unit (dRU_C_p2_p3_p1_p2; 13 tones with positive indices): 40, 77, 114, 151 , 188, 225, 262, 299, 336, 373, 410, 447, 484Allocation for a 37th resource unit (dRU_C_p2_p3_p2_p1 ; 13 tones with positive indices): 28, 65, 102, 139, 176, 213, 250, 287, 323, 360, 397, 434, 471Allocation for a 38th resource unit (dRU_C_p2_p3_p2_p2; 13 tones with positive indices): 48, 85, 122, 159, 196, 233, 270, 307, 344, 381 , 418, 455, 492.

14. First communication device according to claim 1 , wherein the circuitry is configured to select a tone plan from a plurality of tone plans for each of 20 MHz, 40 MHz and 80 MHz bandwidth and / or to select a multiplex of one or more first tone plans comprising an allocation of non-contiguous tones to two or more non-contiguous resource units and one or more second tone plans comprising an allocation of contiguous tones to one or more contiguous resource units.

15. Second communication device configured to communicate with a first communication device, the second communication device comprising circuitry configured to: receive a notification of a selected tone plan, the tone plan comprising an allocation of non-contiguous tones to two or more resource units, and an allocation of a resource unit allocated to the second communication device; and transmit data to and / or receive data from the first communication device on the allocated resource unit.

16. Second communication device according to claim 15, wherein the circuitry is configured to transmit one or more transmission requirements in a status report to the first communication device.

17. Second communication device according to claim 15, wherein the circuitry is configured not to modulate tones not belonging to one or more resource units allocated to the second communication device, in particular to assign zero transmit power to these tones.

18. First communication method of a first communication device configured to communicate with one or more second communication devices, the first communication method comprising: selecting at least one tone plan from a plurality of tone plans, each comprising a different allocation of tones to two or more resource units and the selected tone plan comprising an allocation of non-contiguous tones to two or more resource units; allocating one or more resource units of the selected tone plan to the one or more second communication devices; notifying the one or more second communication devices of the selected tone plan and the allocation of a resource unit allocated to the respective second communication device; and transmitting data to and / or receive data from the one or more second communication devices on the respectively allocated one or more resource units.

19. Second communication method of a second communication device configured to communicate with a first communication device, the second communication method comprising: receiving a notification of a selected tone plan, the tone plan comprising an allocation of non-contiguous tones to two or more resource units, and an allocation of a resource unit allocated to the second communication device; and transmitting data to and / or receive data from the first communication device on the allocated resource unit.

20. A non-transitory computer-readable recording medium that stores therein a computer program product, which, when executed by a processor, causes the method according to claim 18 or 19 to be performed.

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