Method and communication device for sending resource unit

Abstract

The present invention provides a method and a communication device for sending resource units. The implementation of the embodiments of the present invention can control the transmission power of resource units. A method for sending resource units provided by the present invention includes: distributing the subcarriers of a resource unit (RU) or a multiple resource unit (MRU) over a physical layer protocol data unit (PPDU) bandwidth or a frequency subblock of the bandwidth to generate a distributed tone RU (dRU) or a distributed MRU (dMRU) associated with an uplink (UL) triggered-based (TB) PPDU, wherein the UL TB PPDU includes at least an ultra-high throughput (EHT) short training field (EHT-STF), an EHT long training field (EHT-LTF) and payload data; and using transmit power control (TPC) to send the dRU or the dMRU associated with the UL TB PPDU, so that the symbol associated with the EHT-STF is sent at a first power, and the symbol associated with the EHT-LTF and the payload is sent at a second power.

Description

Technical Field

[0001] The present invention generally relates to wireless communications, and more specifically, to transmission power control (TPC) of distributed-tone resource units (dRU) and distributed multi-resource units (dMRU) in a 6GHz low-power indoor (LPI) system. Background Art

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

[0003] LPI in 6GHz has strict Power Spectral Density (PSD) requirements, which often results in lower transmit power and shorter coverage. One way to improve coverage is to distribute small Resource Unit (RU) tones ("regular RU" or "logical RU") over a wider bandwidth or larger frequency subblocks, resulting in staggered, interleaved, or distributed tone RUs (dRUs) and aggregation of multiple dRUs or dMRUs to achieve higher transmit power. Unlike a regular RU (rRU) where the subcarriers are essentially continuous or adjacent to each other, the subcarriers in a dRU or dMRU are distributed over a wider bandwidth, so the tones are separated by different distances. Due to the different number of tones available in Extremely-High-Throughput (EHT) Short Training Field (STF) symbols and data and EHT Long Training Field (EHT-LTF) symbols, the maximum transmit power allowed for EHT-STF and data / EHT-LTF symbols may be different to meet LPI PSD requirements (e.g., -1dBm / MHz for non-AP stations (STAs)). For some dRU / dMRU transmission scenarios, the maximum transmit power of the uplink (UL) trigger-based (TB) physical-layer Protocol Data Unit (PPDU) using the dRU / dMRU may be limited by the EHT-STF transmit power. Therefore, a TPC solution is needed for dRU and MRU in 6GHz LPI systems. Summary of the invention

[0004] The present invention provides a method for sending a resource unit and a communication device. The implementation of the embodiment of the present invention can control the sending power of the resource unit.

[0005] A method for sending a resource unit provided by the present invention includes: distributing subcarriers of a resource unit (RU) or a multiple resource unit (MRU) over a physical layer protocol data unit (PPDU) bandwidth or a frequency subblock of the bandwidth to generate a distributed tone RU (dRU) or a distributed MRU (dMRU) associated with an uplink (UL) triggered-based (TB) PPDU, wherein the ULTB PPDU includes at least an ultra-high throughput (EHT) short training field (EHT-STF), an EHT long training field (EHT-LTF) and payload data; and sending the dRU or the dMRU associated with the UL TB PPDU using transmit power control (TPC) so that symbols associated with the EHT-STF are sent at a first power, and symbols associated with the EHT-LTF and the payload are sent at a second power.

[0006] In addition, the present invention provides a communication device, which includes: a transceiver configured for wireless transmission and reception; and a processor coupled to the transceiver and configured to execute the method for sending resource units of the present invention through the transceiver.

[0007] As described above, the present invention uses transmit power control (TPC) to send the dRU or the dMRU associated with the UL TB PPDU, so that the symbols associated with the EHT-STF are sent at a first power, and the symbols associated with the EHT-LTF and the payload are sent at a second power, thereby achieving transmit power control of the resource unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a diagram of an example network environment in which various solutions and schemes according to the present invention may be implemented.

[0009] Figure 2 An example scenario 200 of maximum transmit power used by a non-AP STA under the proposed scheme according to the present invention is illustrated.

[0010] Figure 3 An example scenario 300 of EHT-STF power limitation according to the proposed scheme of the present invention is illustrated.

[0011] Figure 4 An example scenario 400 of distributed STF (dSTF) PSD limitation according to the proposed scheme of the present invention is illustrated.

[0012] Figure 5 An example scenario 500 illustrating the general principles of dRU / dMRU transmit power control according to various proposed schemes of the present invention is illustrated.

[0013] Figure 6An example scenario 600 illustrating the general principles of dRU / dMRU transmit power control according to various proposed schemes of the present invention is illustrated.

[0014] Figure 7 An example scenario 700 of dRU / dMRU TPC under a first approach of Option 1 is illustrated.

[0015] Figure 8 An example scenario 800 of dRU / dMRU TPC under the second approach of Option 1 is illustrated.

[0016] Fig. 9 An example communication system 900 is shown having at least an example device 910 and an example device 920 according to an embodiment of the present invention.

[0017] Fig.10 An example process 1000 is illustrated in accordance with an embodiment of the invention. DETAILED DESCRIPTION

[0018] Certain words are used in the specification and claims to refer to specific components. It should be understood by those skilled in the art that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. "Including" and "including" mentioned throughout the specification and claims are open-ended terms, so they should be interpreted as "including but not limited to". "Substantially" or "approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" or "coupled" herein includes any direct and indirect electrical connection means. Therefore, if the text describes a first device coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means. The following is a preferred way to implement the present invention, the purpose of which is to illustrate the spirit of the present invention rather than to limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the definition of the claims.

[0019] The following description is the best embodiment of the present invention. These descriptions are used to illustrate the general principles of the present invention and should not be used to limit the present invention. The scope of protection of the present invention should be determined based on the claims of the present invention.

[0020] Overview

[0021] Embodiments according to the present invention relate to various technologies, methods, schemes and / or solutions related to TPC of dRU and dMRU in 6GHz LPI system. According to the present invention, multiple possible solutions can be implemented individually or in combination. That is, although these possible solutions may be described separately below, two or more of these possible solutions may be implemented in one combination or another combination.

[0022] It is worth noting that in the present invention, a 26-tone regular RU can be interchangeably expressed as RU26 (or rRU26), a 52-tone regular RU can be interchangeably expressed as RU52 (or rRU52), a 106-tone regular RU can be interchangeably expressed as RU106 (or rRU106), a 242-tone regular RU can be interchangeably expressed as RU242 (or rRU242), etc. In addition, an aggregate (26+52) tone regular MRU can be interchangeably expressed as MRU78 (or rMRU78), an aggregate (26+106) tone regular MRU can be interchangeably expressed as MRU132 (or rMRU132), etc. Furthermore, in the present invention, a 26-tone distributed tone RU may be interchangeably represented as dRU26, a 52-tone distributed tone RU may be interchangeably represented as dRU52, a 106-tone distributed tone RU may be interchangeably represented as dRU106, a 242-tone distributed tone RU may be interchangeably represented as dRU242, etc. Additionally, an aggregate (26+52) tone distributed tone MRU may be interchangeably represented as dMRU78, an aggregate (26+106) tone distributed tone MRU may be interchangeably represented as dMRU132, etc.

[0023] Since the above examples are only illustrative examples and not an exhaustive list of all possibilities, the same rules apply to other regular RUs, distributed tone RUs, MRUs, and distributed tone MRUs of different sizes (or different numbers of tones). It should also be noted that in the present invention, 20 MHz bandwidth can be interchangeably represented as BW20, 40 MHz bandwidth can be interchangeably represented as BW40, 80 MHz bandwidth can be interchangeably represented as BW80, 160 MHz bandwidth can be interchangeably represented as BW160, 240 MHz bandwidth can be interchangeably represented as BW240, and 320 MHz bandwidth can be interchangeably represented as BW320. It is further noteworthy that in the present invention, a 26-tone interleaved tone (or interleaved tone) RU can be interchangeably represented as iRU26, a 52-tone interleaved tone (or interleaved tone) RU can be interchangeably represented as iRU52, a 106-tone interleaved tone (or interleaved tone) RU can be interchangeably represented as iRU106, a 242-tone interleaved tone (or interleaved tone) RU can be interchangeably represented as iRU242, and a 484-tone interleaved tone (or interleaved tone) RU can be interchangeably represented as iRU484.

[0024] Figure 1 An example network environment 100 is illustrated in which various solutions and approaches according to the present invention may be implemented. Figure 2 to Figure 10 FIG. 1 illustrates an implementation example of various proposed solutions in a network environment 100 according to the present invention. Figures 1 to 10 The following description of various proposed approaches is provided.

[0025] refer to Figure 1 In part (A) of the present invention, the network environment 100 may include a communication entity 110 and a communication entity 120 that perform wireless communication (e.g., in a WLAN according to one or more IEEE 802.11 standards). For example, the communication entity 110 may be a first station (STA) and the communication entity 120 may be a second STA, each of the first STA and the second STA acting as an access point (AP) STA or a non-access point (non-AP) STA. As described herein, under various proposed schemes according to the present invention, the communication entity 110 and the communication entity 120 may be configured to perform wireless communication by performing TPC on a dRU and a dMRU in a 6 GHz LPI system.

[0026] refer to Figure 1In part (B), the UL TB PPDU sent by UE 110 under various proposed schemes according to the present invention may include a legacy preamble, a universal signal (U-SIG) field, an EHT-STF, an EHT long training field (EHT-LTF), and a payload (e.g., data). The legacy preamble and the U-SIG field may be sent on every 20 MHz (e.g., continuous / adjacent tones that are not dispersed or otherwise interleaved or interleaved), and replication may be performed for each 20 MHz segment or frequency sub-block. On the other hand, each of the EHT-LTF and the payload may be sent with the same interleaved or distributed tone RU / MRU (dRU / dMRU) index and the same transmit power. More specifically, under various proposed schemes described below, the EHT-STF may be sent on each distributed bandwidth (BW) or frequency segment, where the UL TB EHT-STF reuses a symbol duration of 8 μs and reuses the EHT-STF frequency domain sequence used in the rRU.

[0027] Typically, EHT-STF is used for power measurement of automatic gain control (AGC) and automatic detection of EHT-STF based on periodic repetition of EHT-STF. For UL TB PPDU using regular RU, EHT-STF is typically sent using the subcarrier index of the allocated RU (interchangeably referred to herein as "tone index or toneindices"). In order to obtain better power measurement and perform on large RUs (e.g., wider bandwidth) and small RUs (e.g., narrow bandwidth), for UL TB PPDU transmission, an 8μs EHT-STF (e.g., one STF tone in every eight tones) with an EHT-STF period of 1.6μs (microseconds) is used (so there are 5 EHT-STF repetitions within 8μs). The 8μs EHT-STF has 8x (8x) downsampling in the frequency domain. Unlike regular RUs, the subcarriers in dRUs are not continuous or adjacent to each other, so the EHT-STF cannot be sent directly using the subcarrier index of the dRU. Instead, according to the various schemes proposed in this article, EHT-STF transmission is defined by a specific segment or subblock or portion or the entire BW in the frequency domain.

[0028] Figure 2An example scenario 200 of the maximum transmit power used by a non-AP STA under the proposed scheme according to the present invention is illustrated. Under the proposed scheme, the maximum transmit power used by a non-AP STA (e.g., communication entity 110 or communication entity 120) for a dRU / dMRU in a 6 GHz LPI system can be obtained based on the maximum transmit power used for a regular RU / MRU in the 6 GHz LPI system and the corresponding distribution power gain.

[0029] Figure 3 An example scenario 300 of EHT-STF power limitation according to the proposed scheme of the present invention is illustrated. Under the proposed scheme, the UL TB PPDU with 8μs EHT-STF has 8 times downsampling in the frequency domain, with a periodicity of 1.6μs and a period of 5. Specifically, for BW20, which may have 30 tones and a maximum of 2 tones in 1MHz, the maximum transmit power of EHT-STF is Maybe 10*log 10 (30 / 2)–1=10.76dBm. For BW40, there may be 62 tones, and at most 2 tones in 1MHz, and the maximum transmit power may be 10*log 10 (62 / 2)–1=13.91dBm. For BW80, there may be 124 tones, and at most 2 tones in 1MHz, and the maximum transmit power may be 10*log 10 (124 / 2)–1=16.92dBm. For BW160, there may be 252 tones, and there are at most 2 tones in 1MHz, and the maximum transmit power may be 10*log 10 (252 / 2)–1=20.00dBm.

[0030] Figure 4 An example scenario 400 of distributed STF (dSTF) PSD limitation according to the proposed scheme of the present invention is illustrated. Figure 4 Part (A) of FIG. 1 shows an example of the maximum power of a STA limited by dSTF. It is worth noting that the term "dSTF" herein refers to EHT-STF transmission using staggered, interleaved, or other distributed tone RU / MRU (dRU / dMRU) transmission is enabled. Figure 4 In the table shown in part (A) of , each highlighted box (gray box) indicates that the maximum transmission power corresponding to the data / EHT-LTF symbol is limited by the maximum transmission power of the EHT-STF. Figure 4Part (B) of FIG. 5 shows an example of the power boost gain loss in dB for the EHT-LTF and data symbol parts (due to the limitation of the maximum EHT-STF power).

[0031] Figure 5 An example scenario 500 is illustrated that illustrates the general considerations of dRU / dMRU transmit power control according to various proposed schemes of the present invention. express Figure 2 The maximum allowed transmit power for an EHT-LTF / data symbol as defined in . express Figure 3 The maximum allowed transmit power of an EHT-STF symbol as defined in . Indicates the actual transmit power of the EHT-LTF / data symbol. Indicates the actual transmit power of the EHT-STF symbol. Figure 5 On the left side, the fields including the Legacy Short Training Field (L-STF), the Legacy Long Training Field (L-LTF), the Legacy Signal (L-SIG), the Repeated Legacy Signal (RL-SIG), and the Universal Signal (U-SIG) can be transmitted with the same power as the legacy preamble symbol (the transmit power can be the same as the maximum allowed L-LTF / SIG power or the same as the maximum allowed L-STF power), and the tone distribution is not used. Figure 5 To the right of the , a field including the EHT-LTF and one or more data symbols (simply represented as "EHT-DATA" in the figure) can be sent using the power used to send the EHT-LTF and data symbols. As described below, the transmit power used to send the EHT-LTF / data symbols can be the same as or different from the transmit power of the EHT-STF symbols.

[0032] Figure 6 An example scenario 600 of the general principles of dRU / dMRU transmit power control according to various proposed schemes of the present invention is illustrated. Scenario 600 shows three different options for dRU / dMRU transmit power control (TPC). In particular, as described below, a first option (option 1), a second option (option 2), and a third option (option 3) may be used for dRU / dMRU TPC under various proposed schemes of the present invention.

[0033] Figure 7An example scenario 700 of dRU / dMRU TPC under the first method of Option 1 is illustrated. Under the first method of Option 1, EHT-STF symbols and EHT-LTF / data symbols may be transmitted with the same power, which may be expressed as: The transmission power may be affected by and Here, for dSTF on BW20, BW40, BW80, and BW160, (in dBm) (ie, for dSTF on BW20, For dSTF on BW40, For dSTF on BW80, For dSTF on BW160, ). Therefore, the actual transmission power of STA Can be the minimum value of some parameters, as follows: In the present invention, the term "PL DL ” represents the downlink (DL) path loss (PL), and the term “Target RSsI " stands for Received Signal Strength Indicator (RSSI) of the target. Indicates the maximum transmit power allowed by the LPI system.

[0034] Figure 8 An example scenario 800 of dRU / dMRU TPC under the second method of Option 1 is illustrated. Under the second method of Option 1, EHT-STF symbols and EHT-LTF / data symbols may be transmitted at the same power, which may be expressed as: The transmission power may be affected by Therefore, the actual transmission power of the STA for the EHT-STF symbol is and the actual transmit power for EHT-LTF / data symbols Can be the minimum value of some parameters, as follows:

[0035] Under Option 2 of the proposed scheme, the EHT-STF symbols and the EHT-LTF / data symbols may be transmitted with the same power or with different powers (e.g., ). In addition, the transmission power of the EHT-STF symbol may be affected by In addition, the transmission power of EHT-LTF / data symbols may be limited by Therefore, the actual transmission power of EHT-LTF / data symbol can be expressed as: Similarly, the actual transmission power of the EHT-STF symbol can be expressed as:

[0036] Under Option 3 of the proposed scheme, In this case, EHT-STF symbols and EHT-LTF / data symbols may be sent at different powers. In addition, EHT-STF symbols may be sent at the maximum allowed power and may be subject to In addition, the transmission power of EHT-LTF / data symbols may be limited by , which is the maximum allowed EHT-STF transmit power adjusted by delta. In the case of , the actual transmission power of the EHT-STF symbol can be expressed as: In addition, the actual transmission power of the EHT-LTF / data symbol can be expressed as: Here, the parameter ΔF may depend on the modulation coding scheme (MCS) and / or the number of spatial streams (Nss), and the adjustment range of ΔF (in dB) may vary. For example, for most cases, when the transmit power does not exceed the maximum EHT-STF power limit, ΔF may be equal to 0. In addition, under Option 3 of the proposed scheme, In this case, the actual transmit power of the EHT-STF symbol and the actual transmit power of the EHT-LTF / data symbol may be the same, as shown below:

[0037] Illustrative Implementation

[0038] Fig. 9 An example communication system 900 having at least an example device 910 and an example device 920 according to an embodiment of the present invention is shown. Each of the device 910 and the device 920 can perform various functions to implement the schemes, techniques, processes and methods described herein related to TPC of dRU and MRU in a 6 GHz LPI system, including the various schemes described above with respect to various proposed designs, concepts, schemes, the systems and methods described above, and the processes described below. For example, the device 910 can be an example implementation of the communication entity 110, and the device 920 can be an example implementation of the communication entity 120.

[0039] Each of the devices 910 and 920 may be part of an electronic device, which may be a STA or an AP, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each of the devices 910 and 920 may be implemented in a smart phone, a smart watch, a personal digital assistant, a digital camera, or a computing device such as a tablet, a laptop, or a notebook computer. Each of the devices 910 and 920 may also be part of a machine-type device, which may be an IoT (Internet of things) device such as a fixed or stationary device, a home device, a wired communication device, or a computing device. For example, each of the devices 910 and 920 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented in a network device or as a network device, the device 910 and / or the device 920 may be implemented in a network node, such as an AP in a WLAN.

[0040] In some embodiments, each of the apparatus 910 and the apparatus 920 may be implemented in the form of one or more integrated circuit (IC) chips, such as but not limited to one or more single-core processors, one or more multi-core processors, one or more reduced instruction set computing (RISC) processors, or one or more complex instruction set computing (CISC) processors. In the above various schemes, each of the apparatus 910 and the apparatus 920 may be implemented in or as a STA or an AP. Each of the apparatus 910 and the apparatus 920 may include Fig. 9 At least some of the components shown in the drawings include, for example, processor 912 and processor 922, respectively. Each of apparatus 910 and apparatus 920 may also include one or more other components not related to the solution proposed by the present invention (e.g., internal power supply, display device and / or user interface device), and therefore, for the sake of simplicity and brevity, such components of apparatus 910 and apparatus 920 are not shown in the drawings. Fig. 9 It is not shown in the figure and will not be described below.

[0041] In one aspect of the present invention, each of the processors 912 and 922 may be implemented in the form of one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, even if the singular term "processor" is used herein to refer to the processors 912 and 922, each of the processors 912 and 922 may include multiple processors in some embodiments and may include a single processor in other embodiments according to the present invention. In another aspect of the present invention, each of the processors 912 and 922 may be implemented in the form of hardware (and optionally, firmware) having electronic components, including, for example, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more varactor diodes, which are configured and arranged to achieve specific purposes according to the present invention. In other words, in at least some embodiments, each of the processors 912 and 922 is a dedicated machine specifically designed, arranged, and configured to perform specific tasks, including tasks related to TPC of dRUs and MRUs in a 6GHz LPI system. For example, each of processor 912 and processor 922 may be configured with hardware components or circuits to implement one, some, or all of the examples described and illustrated herein.

[0042] In some embodiments, the device 910 may further include a transceiver 916 coupled to the processor 912. The transceiver 916 may transmit and receive data wirelessly. In some embodiments, the device 920 may further include a transceiver 926 coupled to the processor 922. The transceiver 926 may include a transceiver capable of transmitting and receiving data wirelessly.

[0043] In some embodiments, the device 910 may further include a memory 914, which is coupled to the processor 912 and can be accessed by the processor 912 and store data therein. In some embodiments, the device 920 may also include a memory 924, which is coupled to the processor 922 and can be accessed by the processor 922 and store data therein. Each of the memory 914 and the memory 924 may include a type of random access memory (RAM), such as a dynamic RAM (DRAM), a static RAM (SRAM), a thyristor RAM (T-RAM) and / or a zero capacitance RAM (Z-RAM). Alternatively or additionally, each of the memory 914 and the memory 924 may include a read-only memory (ROM), such as a mask ROM, a programmable ROM (PROM), an erasable programmable ROM (EPROM) and / or an electrically erasable programmable ROM (EEPROM). Alternatively or additionally, each of memory 914 and memory 924 may include a type of non-volatile random access memory (NVRAM) such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), magnetoresistive RAM (MRAM), and / or phase change memory.

[0044] Each of the device 910 and the device 920 may be a communication entity capable of communicating with each other using various proposed schemes according to the present invention. For illustrative purposes and not limiting, a description of the capabilities of the device 910 as the communication entity 110 and the device 920 as the communication entity 120 is provided below. It is worth noting that although the example implementation described below is provided in the context of a WLAN, it can also be implemented in other types of networks. Therefore, although the description of the following example implementation belongs to the scenario where the device 910 is used as a sending device and the device 920 is used as a receiving device, it is also applicable to another scenario where the device 910 is used as a receiving device and the device 920 is used as a sending device.

[0045] Under the proposed scheme of TPC for dRU and dMRU in 6 GHz LPI system according to the present invention, the processor 912 of the device 910 may distribute the subcarriers of the RU over the PPDU bandwidth or the frequency sub-blocks of the bandwidth to generate a dRU associated with a UL TB PPDU including at least EHT-STF, EHT-LTF, and payload data. In addition, the processor 912 may transmit the dRU using TPC associated with the UL TB PPDU through the transceiver 916, so that the symbol associated with the EHT-STF is transmitted at a first power and the symbol associated with the EHT-LTF and the payload is transmitted at a second power.

[0046] In some embodiments, the first power and the second power may be equal (e.g., expressed as: In some embodiments, the maximum allowed transmit power of an EHT-STF symbol on a 20 MHz bandwidth, a 40 MHz bandwidth, an 80 MHz bandwidth, or a 160 MHz bandwidth is may be limited to 10.76 dBm, 13.91 dBm, 16.92 dBm, or 20.00 dBm, respectively. In some embodiments, the actual transmit power of a dRU or dMRU associated with a UL TB PPDU may be limited to the minimum of: (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of symbols associated with the EHT-LTF and payload, (c) the maximum allowed transmit power of symbols associated with the EHT-STF, and (d) the maximum allowed transmit power of a 6 GHz LPI system (e.g., Alternatively, the actual transmit power of a dRU or dMRU associated with a UL TB PPDU may be limited to the minimum of: (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of symbols associated with the EHT-LTF and payload, and (c) the maximum allowed transmit power of a 6 GHz LPI system (e.g., ).

[0047] In some embodiments, the first power may be less than or equal to the second power (eg, In some embodiments, the actual transmit power of a dRU or dMRU associated with a UL TB PPDU may be limited to the minimum of (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of symbols associated with the EHT-LTF and the payload, and (c) the maximum allowed transmit power of a 6 GHz LPI system (e.g., Alternatively, the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of the following (wherein the actual transmit power includes at least the first power): (a) DL PL plus target RSSI, (b) the maximum allowed transmit power of a symbol associated with the EHT-STF, and (c) the maximum allowed transmit power in a 6 GHz LPI system (e.g., ).

[0048] In some embodiments, the first power and the second power may be different. In some embodiments, the maximum allowed transmit power of the EHT-STF symbol is less than the maximum allowed transmit power of the EHT-LTF / data symbol (e.g., ), the actual transmit power of the dRU or dMRU associated with the UL TBPPDU may be limited to the minimum of the following (wherein the actual transmit power includes at least the first power): (a) DL PL plus the target RSSI, (b) the maximum allowed transmit power of the symbol associated with the EHT-STF, and (c) the maximum allowed transmit power of the 6 GHz LPI system (e.g., ). Alternatively, when the maximum allowed transmit power of the EHT-STF symbol is less than the maximum allowed transmit power of the EHT-LTF / data symbol (e.g., ), the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of the following (wherein the actual transmit power includes at least the second power): (a) DL PL plus target RSSI, (b) the maximum allowed transmit power of symbols associated with EHT-LTF and payload, (c) the maximum allowed transmit power of symbols associated with EHT-STF plus an adjustment value depending on MCS and Nss, and (d) the maximum allowed transmit power of a 6 GHz LPI system (e.g., Alternatively, the maximum allowed transmit power of the EHT-STF symbol is greater than or equal to the maximum allowed transmit power of the EHT-LTF / data symbol (for example, ), the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of: (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of the symbols associated with the EHT-LTF and the payload, and (c) the maximum allowed transmit power of the 6 GHz LPI system (e.g., ).

[0049] Illustrative Process

[0050] Fig.10 An example process 1000 is illustrated in accordance with an embodiment of the present invention. Process 1000 may represent one aspect of implementing the various proposed designs, concepts, schemes, systems, and methods described above. More specifically, process 1000 may represent one aspect of the proposed concepts and schemes related to TPC of dRUs and MRUs in a 6 GHz LPI system according to the present invention. Process 1000 may include one or more operations, actions, or functions as shown in one or more of blocks 1010 and 1020. Although illustrated as discrete blocks, the various blocks of process 1000 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. In addition, the blocks / sub-blocks of process 1000 may be arranged in blocks 1010 and 1020. Fig.10The process 1000 may be performed in the order shown or in a different order. In addition, one or more blocks / sub-blocks of the process 1000 may be performed repeatedly or iteratively. The process 1000 may be implemented by or in the device 910 and the device 920 and any variants thereof. For illustrative purposes only and without limiting the scope, the process 1000 is described below in the context of the device 910 as a communication entity 110 (e.g., a transmitting device of a STA or an AP) in a wireless network (a WLAN according to one or more IEEE 802.11 standards) and the device 920 as a communication entity 120 (e.g., a transmitting device of a STA or an AP) in a wireless network (a WLAN according to one or more IEEE 802.11 standards). The process 1000 may start at block 1010.

[0051] At 1010, process 1000 may include processor 912 of device 910 distributing subcarriers of the RU over a PPDU bandwidth or frequency subblocks of the bandwidth to generate a dRU associated with a UL TB PPDU including at least an EHT-STF, an EHT-LTF, and payload data. Process 1000 may proceed from 1010 to 1020.

[0052] At 1020, process 1000 may include processor 912, via transceiver 916, transmitting a dRU or dMRU with TPC associated with the UL TB PPDU such that symbols associated with the EHT-STF are transmitted at a first power and symbols associated with the EHT-LTF and payload are transmitted at a second power.

[0053] In some embodiments, the first power and the second power may be equal (e.g., expressed as: In some embodiments, the maximum allowed transmit power of an EHT-STF symbol on a 20 MHz bandwidth, a 40 MHz bandwidth, an 80 MHz bandwidth, or a 160 MHz bandwidth is may be limited to 10.76 dBm, 13.91 dBm, 16.92 dBm, or 20.00 dBm, respectively. In some embodiments, the actual transmit power of a dRU or dMRU associated with a UL TB PPDU may be limited to the minimum of: (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of symbols associated with the EHT-LTF and payload, (c) the maximum allowed transmit power of symbols associated with the EHT-STF, and (d) the maximum allowed transmit power of a 6 GHz LPI system (e.g., Alternatively, the actual transmit power of a dRU or dMRU associated with a UL TB PPDU may be limited to the minimum of: (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of symbols associated with the EHT-LTF and payload, and (c) the maximum allowed transmit power of the 6 GHz LPI system (e.g., ).

[0054] In some embodiments, the first power may be less than or equal to the second power (eg, In some embodiments, the actual transmit power of a dRU or dMRU associated with a UL TB PPDU may be limited to the minimum of (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of symbols associated with the EHT-LTF and the payload, and (c) the maximum allowed transmit power of a 6 GHz LPI system (e.g., Alternatively, the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of the following (wherein the actual transmit power includes at least the first power): (a) DL PL plus target RSSI, (b) the maximum allowed transmit power of a symbol associated with the EHT-STF, and (c) the maximum allowed transmit power in a 6 GHz LPI system (e.g., ).

[0055] In some embodiments, the first power and the second power may be different. In some embodiments, the maximum allowed transmit power of the EHT-STF symbol is less than the maximum allowed transmit power of the EHT-LTF / data symbol (e.g., ), the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of the following (wherein the actual transmit power includes at least the first power): (a) DL PL plus the target RSSI, (b) the maximum allowed transmit power of the symbol associated with the EHT-STF, and (c) the maximum allowed transmit power of the 6 GHz LPI system (e.g., ). Alternatively, when the maximum allowed transmit power of the EHT-STF symbol is less than the maximum allowed transmit power of the EHT-LTF / data symbol (e.g., ), the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of the following (wherein the actual transmit power includes at least the second power): (a) DL PL plus target RSSI, (b) the maximum allowed transmit power of symbols associated with EHT-LTF and payload, (c) the maximum allowed transmit power of symbols associated with EHT-STF plus an adjustment value depending on MCS and Nss, and (d) the maximum allowed transmit power of a 6 GHz LPI system (e.g., Alternatively, the maximum allowed transmit power of the EHT-STF symbol is greater than or equal to the maximum allowed transmit power of the EHT-LTF / data symbol (for example, ), the actual transmit power of the dRU or dMRU associated with the UL TB PPDU may be limited to the minimum of: (a) the DL PL plus the target RSSI, (b) the maximum allowed transmit power of the symbols associated with the EHT-LTF and the payload, and (c) the maximum allowed transmit power of the 6 GHz LPI system (e.g., )

[0056] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A method for sending a resource unit, characterized in that: include: distributing subcarriers of a resource unit or a multiple resource unit over a physical layer protocol data unit bandwidth or a frequency subblock of the bandwidth to generate a distributed tone resource unit or a distributed multiple resource unit associated with an uplink triggered-based physical layer protocol data unit comprising at least a very high throughput short training field, a very high throughput long training field, and payload data; and The distributed tone resource unit or the distributed multiple resource unit associated with the uplink triggered-based physical layer protocol data unit is transmitted using transmit power control such that symbols associated with the very high throughput short training field are transmitted at a first power and symbols associated with the very high throughput long training field and the payload are transmitted at a second power.

2. The method according to claim 1, characterized in that: The first power and the second power are the same or different.

3. The method according to claim 2, characterized in that The maximum allowed transmit power of symbols associated with the ultra-high throughput short training field is limited to 10.76 dBm, 13.91 dBm, 16.92 dBm or 20.00 dBm over a 20 MHz bandwidth, a 40 MHz bandwidth, an 80 MHz bandwidth or a 160 MHz bandwidth, respectively.

4. The method according to claim 2, characterized in that: When the first power and the second power are the same, an actual transmit power of the distributed tone resource unit or the distributed multiple resource unit associated with the uplink triggered physical layer protocol data unit is limited to a minimum of: Downlink path loss plus target received signal strength indication; a maximum allowed transmit power for symbols associated with the very high throughput long training field and the payload; the maximum allowed transmit power of symbols associated with the very high throughput short training field, and Maximum allowed transmit power for 6GHz low-power indoor systems.

5. The method according to claim 2, characterized in that: When the first power and the second power are the same, an actual transmit power of the distributed tone resource unit or the distributed multiple resource unit associated with the uplink triggered physical layer protocol data unit is limited to a minimum of: Downlink path loss plus target received signal strength indication; a maximum allowed transmit power for symbols associated with the very high throughput long training field and the payload; as well as Maximum allowed transmit power for 6GHz low-power indoor systems.

6. The method according to claim 2, characterized in that The difference includes the first power being less than the second power.

7. The method according to claim 6, characterized in that When the first power is less than or equal to the second power, an actual transmit power of a distributed tone resource unit or a distributed multiple resource unit associated with the uplink triggered physical layer protocol data unit is limited to a minimum of the following, wherein the actual transmit power includes at least the second power: Downlink path loss plus target received signal strength indication; a maximum allowed transmit power for symbols associated with the very high throughput long training field and the payload; as well as Maximum allowed transmit power for 6GHz low-power indoor systems.

8. The method according to claim 6, characterized in that When the first power is less than or equal to the second power, an actual transmit power of a distributed tone resource unit or a distributed multiple resource unit associated with the uplink triggered physical layer protocol data unit is limited to a minimum of the following, wherein the actual transmit power includes at least the first power: Downlink path loss plus target received signal strength indication; a maximum allowed transmit power for symbols associated with the very high throughput short training field; as well as Maximum allowed transmit power in 6GHz low-power indoor systems.

9. The method according to claim 2, characterized in that: In the case where the maximum allowed transmit power of the symbol associated with the very high throughput short training field is less than the maximum allowed transmit power of the symbol associated with the very high throughput long training field and the payload data, the actual transmit power of the distributed tone resource unit or the distributed multiple resource unit associated with the uplink triggered physical layer protocol data unit is limited to the minimum of the following, wherein the actual transmit power includes at least the first power: Downlink path loss plus target RSSI, the maximum allowed transmit power of symbols associated with the very high throughput short training field, and Maximum allowed transmit power in 6GHz low-power indoor systems.

10. The method according to claim 2, characterized in that In the case where the maximum allowed transmit power of the symbol associated with the very high throughput short training field is less than the maximum allowed transmit power of the symbol associated with the very high throughput long training field and the payload data, the actual transmit power of the distributed tone resource unit or the distributed multiple resource unit associated with the uplink triggered physical layer protocol data unit is limited to the minimum of the following, wherein the actual transmit power includes at least the second power: Downlink path loss plus target RSSI, a maximum allowed transmit power for symbols associated with the very high throughput long training field and the payload, the maximum allowed transmit power for symbols associated with the very high throughput short training field plus an adjustment value depending on the modulation and coding scheme and the number of spatial streams, and Maximum allowed transmit power in 6GHz low-power indoor systems.

11. The method according to claim 2, characterized in that In the case where the maximum allowed transmit power of symbols associated with the very high throughput short training field is greater than or equal to the maximum allowed transmit power of symbols associated with the very high throughput long training field and the payload data, the actual transmit power of the distributed tone resource unit or distributed multi-resource unit associated with the uplink triggered physical layer protocol data unit is limited to the minimum of: Downlink path loss plus target RSSI, a maximum allowed transmit power for symbols associated with the very high throughput long training field and the payload, and Maximum allowed transmit power for 6GHz low-power indoor systems.

12. A communication device, characterized in that: include: a transceiver configured to transmit and receive wirelessly; and A processor is coupled to the transceiver and configured to execute the method according to any one of claims 1 to 11 through the transceiver.

Images