WO2017113997A1 - Method of transmitting high efficient short training field sequence, device and apparatus - Google Patents

Abstract

The embodiment of the invention discloses a method of transmitting a high efficient short training field (HE-STF) sequence, device and apparatus. The method is adopted in a wireless local area network (WLAN) in which frequency domain system resources are divided according to a predefined method into a plurality of resource units (RUs). The method comprises: a transmitter determines a location of an RU in the frequency domain system resources; the transmitter determines, according to the location of the RU in the frequency domain system resources, a transmission power of a non-null sub-carrier included in the RU; and the transmitter transmits, according to the transmission power, a HE-STF sequence corresponding to the RU. The method of transmitting the HE-STF sequence, device and apparatus disclosed in the embodiments of the invention can reduce a peak to average power ratio (PAPR) corresponding to a HE-STF sequence, thereby increasing signal coverage of the transmitter and reducing transmission power of the transmitter.

Description

Method, device and device for transmitting efficient short training domain sequence

This application claims priority to Chinese Patent Application No. 201511020573.1, entitled "Method, Apparatus and Apparatus for Transmitting Efficient Short Training Domain Sequences" on December 30, 2015, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of communications technology and, more particularly, to a method, apparatus and apparatus for transmitting an efficient short training domain sequence.

Background technique

The receiver of the existing WLAN (Wireless Local Area Network) system uses the HE-STF (High Efficient Short Training Field) sequence of the data frame to perform accurate AGC (Automatic Gain Control) on the received signal. The adjustment is such that the signal enters the analog to digital converter at an appropriate power and is converted to a digital signal for further digital processing of the received signal. A signal with a large value of PAPR (Peak to Average Power Ratio) increases the complexity of the digital/analog and analog-to-digital converters, and increases the requirements for the RF power amplifier. Therefore, the HE-STF sequence is reduced. The PAPR value is very important for improving signal coverage and reducing transmit power.

Currently, the WLAN standard of each version is not sufficient for some industry users, and the PAPR value corresponding to the RU (Resource Unit) carrying the HE-STF sequence is still not small enough, for example, IEEE (Institute of Electrical and Electronics Engineers, electrical and electronic). The Engineers Association's 26RU of the 802.11ax standard (including RUs of 26 consecutive subcarriers) has a minimum PAPR value of 2.22 dB (decibel), while 52RU (RUs of 52 consecutive subcarriers) has a minimum PAPR value of 4.26 dB.

Therefore, it is desirable to provide a technique capable of reducing the PAPR value corresponding to the HE-STF sequence.

Summary of the invention

Embodiments of the present invention provide a method, apparatus, and device for transmitting an HE-STF sequence, which can reduce a PAPR value corresponding to a HE-STF sequence.

In a first aspect, a method for transmitting a HE-STF sequence is provided for use in a wireless local area network, The system frequency domain resource used by the WLAN is divided into multiple RUs according to a preset manner, and the method includes: the sending end determines the location of an RU in the system frequency domain resource; and the sending end is based on the RU in the system frequency domain resource. a location, determining a transmit power of the non-empty subcarrier carried in the RU; and sending, by the transmitting end, a HE-STF sequence corresponding to the RU according to the transmit power.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the transmitting end sends the HE-STF sequence, the method further includes: sending, by the sending end, indication information, where the indication information is used to indicate that the RU is The location information in the frequency domain resource, the indication information includes: bandwidth indication information, indication information of a preset manner of the frequency domain resource, device information of the user equipment, and location information of the RU, where the bandwidth indication information is used to indicate the system frequency. The size of the domain, the device information of the user equipment is used to uniquely indicate the user equipment. By transmitting the indication information of the location of the RU allocated to the user equipment in the frequency domain to the receiving end, the receiving end can be made aware of the specific location of the RU that carries the HE-STF sequence, and can save the indication resource.

With reference to the first aspect or the foregoing possible implementation manner, in a second possible implementation manner of the first aspect, the indication information further includes transmission type information, where the transmission type information is used to indicate that the RU is allocated to the IoT (Internet of Things, Internet of Things) users.

In conjunction with the first aspect or the foregoing possible implementation manner, in a third possible implementation manner of the first aspect, the location information of the RU includes information indicating a quantity of subcarriers included in the RU.

In conjunction with the first aspect or the foregoing possible implementation manner, in a fourth possible implementation manner of the first aspect, the indication information is located in a medium access control MAC layer or a physical PHY layer of an uplink trigger frame.

With reference to the first aspect or the foregoing possible implementation manner, in a fifth possible implementation manner of the first aspect, determining a transmit power of the non-empty subcarrier carried in the RU includes: determining, by the transmitting end, the non-empty subcarrier The power normalization factor determines the transmit power of the non-empty subcarriers in the RU.

The second aspect provides a device for transmitting a HE-STF sequence, which is applied to a wireless local area network, where a system frequency domain resource is divided into a plurality of RUs according to a preset manner, and the device includes: a first determining module, a second determining module, configured to determine, according to the location of the RU in the system frequency domain resource, the non-bearing in the RU The transmit power of the null subcarrier; the first sending module, configured to send the HE-STF sequence corresponding to the RU according to the transmit power determined by the determining module.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the device further includes: a second sending module, configured to send the indication information to the receiving end before the first sending module sends the HE-STF sequence, The indication information is used to indicate the location of the RU in the system frequency domain resource, where the indication information includes: bandwidth indication information, indication information of a preset manner, device information of the user equipment, and location information of the RU, where the bandwidth The indication information is used to indicate the size of the frequency domain of the system, and the device information of the user equipment is used to uniquely indicate the user equipment. By transmitting the indication information of the location of the RU allocated to the user equipment in the frequency domain to the receiving end, the receiving end can be made aware of the specific location of the RU carrying the HE-STF sequence, and can save the indication resource.

With reference to the second aspect or the foregoing possible implementation manner, in a second possible implementation manner of the second aspect, the indication information further includes transmission type information, where the transmission type information is used to indicate that the RU is allocated to the IoT user.

With reference to the second aspect or the foregoing possible implementation manner, in a third possible implementation manner of the second aspect, the location information of the RU includes information indicating a quantity of subcarriers included in the RU.

With reference to the second aspect or the foregoing possible implementation manner, in a fourth possible implementation manner of the second aspect, the indication information is located in the media access control MAC layer or the physical PHY layer of the uplink trigger frame.

With reference to the second aspect or the foregoing possible implementation manner, in a fifth possible implementation manner of the second aspect, the second determining module is specifically configured to: determine, by determining a power normalization factor of the non-empty subcarrier, the bearer in the RU The transmit power of the non-empty subcarrier.

In a third aspect, a device for transmitting a HE-STF sequence is provided, where the device is applied to a wireless local area network, and the system frequency domain resource used by the wireless local area network is divided into multiple RUs according to a preset manner, and the device includes: a processor, Memory, bus system and transceiver. Wherein the processor, the memory and the transceiver are connected by the bus system, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the transceiver to receive signals or send signals, and when When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a computer readable medium is provided for storing a computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a fifth aspect, a resource indication method is provided for applying to a wireless local area network, the wireless local area The system uses the frequency domain resources of the network to be divided into multiple RUs in a preset manner. The method includes: determining, by the system, the location of the RUs allocated to the user equipment in the multiple RUs; the sending end sending the indication information to the receiving end, the indication information And indicating the location of the RU allocated to the user equipment in the frequency domain, the indication information includes: bandwidth indication information, indication information of a preset manner, device information of the user equipment, and location information of the RU, where the bandwidth indication information It is used to indicate the size of the system frequency domain resource, and the device information of the user equipment is used to uniquely indicate the user equipment.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the indication information further includes transmission type information, where the transmission type information is used to indicate that the RU is allocated to an IoT user.

With reference to the fifth aspect or the foregoing possible implementation manner, in a second possible implementation manner of the fifth aspect, the location information of the RU includes information indicating a quantity of subcarriers included in the RU.

With reference to the fifth aspect or the foregoing possible implementation manner, in a third possible implementation manner of the fifth aspect, the indication information is located in a MAC layer or a PHY layer of an uplink trigger frame.

A method, apparatus, and device for transmitting an HE-STF sequence according to an embodiment of the present invention, by determining a location of a RU allocated to a user equipment in a system frequency domain resource, and performing transmission processing according to the location, transmitting the RU to the receiving end The corresponding HE-STF sequence can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and reducing the transmitting power of the transmitting end.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic flowchart of a method of transmitting an HE-STF sequence according to an embodiment of the present invention.

2 is a schematic architectural diagram of a WLAN system.

3 is a schematic diagram of a division of frequency domain resources of a 20 megahertz (MHz) bandwidth.

4 is a schematic diagram of the location of a RU of a 20 MHz bandwidth frequency domain resource that may be partitioned in the frequency domain.

FIG. 5 is a schematic diagram of a sub-carrier energy adjustment mode of the next 26 RU in a 20 MHz bandwidth.

6 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 7 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 8 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 9 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 10 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 11 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 12 is a schematic diagram of another 26RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 13 is a schematic diagram of a 52RU subcarrier energy adjustment mode under a 20 MHz bandwidth.

14 is a schematic diagram of another 52RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 15 is a schematic diagram of another 52RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 16 is a schematic diagram of another 52RU subcarrier energy adjustment mode in a 20 MHz bandwidth.

FIG. 17 is a schematic block diagram of an apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention.

FIG. 18 is a schematic block diagram of an apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a schematic flowchart of a method 100 for transmitting an HE-STF sequence according to an embodiment of the present invention, which is applied to a wireless local area network, and the system frequency domain resources used by the wireless local area network are pre-processed. The method is divided into multiple RUs, and the method 100 includes:

S110. The sending end determines a location of an RU in a system frequency domain resource.

S120. The sending end determines, according to the location of the RU in the frequency domain resource of the system, the transmit power of the non-empty subcarrier carried in the RU.

S130. The transmitting end sends the HE-STF sequence corresponding to the RU according to the transmit power.

The method 100 can be applied to various communication systems that implement multi-user transmission by transmitting HE-STF sequences, for example, using OFDMA (Orthogonal Frequency Division Multiple Access) or MU-MIMO (Multi). -User Multiple-Input Multiple-Output, multi-user multiple input multiple output), etc.

Moreover, the method 100 can be applied to a WLAN, for example, Wi-Fi (Wireless Fidelity, Wireless fidelity and so on.

It should be understood that, in order to facilitate the description and understanding of the embodiments of the present invention, "RU#1" described below is equivalent to "one RU" described in S110, and "position #1" is equivalent to "one RU in system frequency in S110". Location in the domain resource."

2 is a schematic diagram of a WLAN system. As shown in FIG. 2, the WLAN system includes one or more access points AP21, and also includes one or more stations STA22. Data transmission between the access point and the station, wherein the access point determines the AGC adjustment of the received signal according to the preamble including the HE-STF sequence sent by the station, and performs data transmission with the station based on the signal, similarly, the site is connected according to the The preamble including the HE-STF sequence transmitted by the ingress determines to perform AGC adjustment on the received signal, and performs data transmission with the access point based on the signal.

Optionally, the sending end is a network side device or a terminal device.

Specifically, as the transmitting end, the network side device in the communication system may be an access point (AP, Access Point) in the WLAN, and the AP may also be referred to as a wireless access point or a bridge or a hotspot, etc., which may Access to a server or communication network.

As the transmitting end, the terminal device in the communication system may be a user station (STA, Station) in the WLAN, and the STA may also be referred to as a user, and may be a wireless sensor, a wireless communication terminal, or a mobile terminal, such as a mobile phone (or called a mobile phone). Cellular "telephone" and a computer with wireless communication capabilities. For example, it may be a portable, pocket-sized, hand-held, computer-integrated, wearable, or in-vehicle wireless communication device that exchanges voice, data, and the like communication data with a wireless access network.

It should be understood that the above-mentioned system for applying the method 100 of the embodiment of the present invention is merely an exemplary description, and the present invention is not limited thereto. For example, a global mobile communication system (GSM) may also be mentioned. CDMA (Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE, Long Term) Evolution) system.

Correspondingly, the network device may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (eNB or e-NodeB, evolutional Node B) It may be a micro cell base station, which may be a micro base station (Micro), may be a pico base station (Pico), may be a home base station, or may be referred to as a femto cell base station (femto), which is not limited in the present invention. The terminal device may be a mobile terminal, a mobile user device, or the like, such as a mobile phone (or "cellular" phone).

For frequency domain resources of different bandwidths, the types of RUs (which may also be referred to as resource blocks) included are different. Specifically, the WLAN-compliant protocol stipulates a possible partitioned RU location (resource profile) for various frequency domain resources to be allocated (20 MHz, 40 MHz, 80 MHz, or 160 MHz), and the sender may be allocated to the user equipment according to the protocol. The location of the RU in the frequency domain determines the power of the subcarrier and/or determines the HE-STF sequence to reduce the PAPR value corresponding to the RU.

The following describes in detail the manner in which the various frequency domain resources to be allocated in the WLAN-compliant protocol may be divided. The rules for dividing the size of the RU in the WLAN system include: taking 26 consecutive subcarriers as one RU (ie, 26 RU) for 52 consecutive segments. The carrier is one RU (ie, 52RU), with one 106 consecutive subcarriers as one RU (ie, 106RU), and one continuous 242 subcarriers as one RU (ie, 242RU). In the following, the resource allocation method of the 20 MHz bandwidth in the IEEE 802.11ax standard is taken as an example to describe the above four cases.

Situation 1

Optionally, as shown in FIG. 3, the Fast Fourier Transformation (FFT) point in the data symbol portion of the WLAN system is 256, that is, there are 256 subcarriers, and the left side carries subcarrier 1 to subcarrier 6 ( It is recorded as subcarrier [1:6], the following notation is the same) and the subcarrier [252:256] on the right is the guard band, and the remaining subcarriers can be used to carry data information. The entire bandwidth can be divided into 9 26RUs, of which 5 The 26RUs are equally divided into two parts by 7 direct current (DC) subcarriers, and the remaining subnumbers are 7, 60, 198, and 251 (referred to as [7, 60, 198, 251], the following notation is the same). use.

Situation 2

Optionally, the left side subcarrier [1:6] and the right side subcarrier [252:256] are guard bands, and the remaining subcarriers can be used to carry data information, and the entire bandwidth can be divided into four 52RU and one 26RU, of which 26RU It is equally divided into two parts by 7 DC subcarriers, and the remaining 4 subcarriers [7, 60, 198, 251] are not used.

Situation 3

Optionally, the left side subcarrier [1:6] and the right side subcarrier [252:256] are guard bands, and the remaining subcarriers can be used to carry data information, and the entire bandwidth can be divided into two 106RUs and one 26RU, of which 26RU It is equally divided into two parts by 7 DC subcarriers.

Situation 4

Optionally, the left side subcarrier [1:6] and the right side subcarrier [252:256] are guard bands, and the remaining subcarriers can be used to carry data information, and the entire bandwidth can be divided into one 242RU, the 242RU It is equally divided into two parts by three DC subcarriers.

The following describes the location of the RU in the frequency domain where the frequency domain resource of the 20 MHz bandwidth may be divided. As shown in FIG. 4, in order to briefly describe the location of the resource unit that may be divided, the resource unit distribution picture of the 20 MHz bandwidth is or described as four layers. :

The first layer is a 26RU distribution map, and there are four 26RUs on the left and right sides of the 26RU located at the center, that is, located at the resource unit position (hereinafter, referred to as position) #1 to position #4 and position # shown in FIG. 6 to RU of position #9.

The second layer is a 52RU distribution map, and there are two 52RUs on the left and right sides of the 26RU located at the center, that is, RUs located at positions #10 to #13 shown in FIG.

The third layer is a distribution map of 106 RU, and there are one 106 RUs on the left and right sides of the 26 RU located at the center, that is, RUs located at position #14 and position #15 shown in FIG.

The fourth layer is a resource unit distribution map of 242 RU.

In the embodiment of the present invention, the frequency domain resource of the 20 MHz bandwidth may be divided into any of the first layer to the fourth layer in FIG. 4, and the divided RU is allocated to multiple users, and each user can only be allocated. One of the divided RUs may indicate the resource allocation by the resource allocation indication information described later.

Optionally, the method for transmitting the HE-STF sequence according to the embodiment of the present invention is based on a set of HE-STF sequences satisfying the IEEE 802.11ax motion, and the sequence is generated by a base sequence M, and the M is as follows:

M={-1-1-1+1+1+1-1+1+1+1-1+1+1-1+1}

The HE-STF sequence with a period of 1.6 μs (microseconds) at 20 M bandwidth is:

HES _-120,120 (-120:8:120)={M,0,M}*(1+j)*sqrt(1/2)

Wherein, the positive and negative signs of the numbers in the sequence M indicate the polarity of the subcarriers, and (1+j) and sqrt(1/2) are subcarrier coefficients. The HE-STF sequence with a period of 1.6 μs in the 20M bandwidth has a total of 30 non-zero values, representing a total of 30 non-empty subcarriers under the 20M bandwidth.

In the uplink OFDMA transmission, some industry users will adopt a HE-STF sequence with a period of 1.6 us. Therefore, the embodiments of the present invention all optimize the HE-STF sequence with a period of 1.6 us. The embodiment of the present invention performs energy adjustment on the sub-carriers corresponding to the HE-STF sequence. In addition, the embodiment of the present invention provides a corresponding optional HE-STF sequence for the specific RU, and the sub-carrier energy adjustment scheme can also be applied to the same. Optional HE-STF sequence.

Adjusting the energy of the subcarrier needs to adjust the HE-STF sequence value corresponding to the subcarrier, and does not need to be performed. The HE-STF sequence value corresponding to the energy-adjusted sub-carrier is still 1, and the HE-STF sequence value corresponding to the sub-carrier that needs to be energy-adjusted may be adjusted to 0.5 by adjusting the sub-carrier coefficient, or the HE-STF sequence value may be used. The embodiment of the present invention is not limited thereto, and any subcarrier adjustment scheme that can reduce the PAPR value corresponding to the HE-STF sequence belongs to the scope of protection of the present invention.

Optionally, in the embodiment of the present invention, determining the transmit power of the non-empty subcarrier in the RU#1 includes:

The transmitting end determines the transmit power of the non-empty subcarrier in RU#1 by determining the power normalization factor of the non-empty subcarrier.

The subcarrier coefficient may be determined by determining a power normalization factor to determine a transmit power of the non-empty subcarrier in the RU#1, where the power normalization factor includes a power normalization parameter _Ndsubc , for example, when needed within a RU When the subcarrier coefficients of two subcarriers are adjusted from 1 to 0.5, N _dsubc needs to be decremented by one; if the subcarrier coefficients of a subcarriers in one RU need to be adjusted from 1 to 0.5, N _dsubc needs to be reduced by a/2. ;

The method for transmitting processing according to the location #1 in the embodiment of the present invention will be described in detail below according to the case 1 to the case 4.

Situation 1

In the 20M bandwidth, each layer of the frequency domain can be divided into nine 26RUs. FIG. 5 to FIG. 12 are schematic diagrams of subcarrier energy obtained by performing energy adjustment on each 26RU subcarrier based on the base sequence M, and the horizontal axis represents the subcarrier sequence number. The vertical arrow represents the energy of the subcarrier.

As shown in FIG. 5, the subcarrier number corresponding to 26RU located at position #1 in the 20M bandwidth is [8:33], and the sequence number of the non-empty subcarrier is [9, 17, 25, 33].

Optionally, the HE-STF sequence value corresponding to the subcarrier [9, 17, 33] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [25] is unchanged, and the subcarrier [9, 17, 33] The power is half of the original, and the PAPR value corresponding to the 26RU is reduced to 1.50 dB.

As shown in FIG. 6, the subcarrier number corresponding to 26RU located at position #2 in the 20M bandwidth is [34:59], and the sequence number of the non-empty subcarrier is [41, 49, 57].

Optionally, the HE-STF sequence value corresponding to the subcarrier [41, 57] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [49] is unchanged, and the energy of the subcarrier [41, 57] is changed. In the original half, the PAPR value corresponding to the 26RU is reduced to 1.25dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x} for the 26RU located at position #2, where the value of x includes +1 or -1, the 26RU sub- Carrier energy adjustment scheme Can be applied directly to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 26RU located at the location #2 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 7, the subcarrier number corresponding to 26RU located at position #3 in the 20M bandwidth is [61:86], and the sequence number of the non-empty subcarrier is [65, 73, 81].

Optionally, the HE-STF sequence value corresponding to the subcarrier [65, 81] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [73] is unchanged, and the energy of the subcarrier [65, 81] is changed. In the original half, the PAPR value corresponding to the 26RU is reduced to 4.26dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x} for the 26RU located at position #3, where the value of x includes +1 or -1, the 26RU sub- The carrier energy adjustment scheme can be applied directly to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 26RU located at the location #3 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 8, the subcarrier number corresponding to 26RU located at position #4 in the 20M bandwidth is [88: 112], and the sequence number of the non-empty subcarrier is [89, 97, 105].

Optionally, the HE-STF sequence value corresponding to the subcarrier [89, 105] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [97] is unchanged, and the energy of the subcarrier [89, 105] is half of the original. The PAPR value corresponding to the 26RU is reduced to 1.25 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x} for the 26RU located at position #4, where the value of x includes +1 or -1, the 26RU sub- The carrier energy adjustment scheme can be applied directly to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 26RU located at the location #4 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 9, the subcarrier number corresponding to 26RU located at position #6 in the 20M bandwidth is [146: 171], and the sequence number of the non-empty subcarrier is [153, 161, 169].

Optionally, the HE-STF sequence value corresponding to the subcarrier [153, 169] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [161] is unchanged, and the energy of the subcarrier [153, 169] is half of the original. The PAPR value corresponding to the 26RU is reduced to 1.25 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x} for the 26RU located at position #6, where the value of x includes +1 or -1, the 26RU sub- The carrier energy adjustment scheme can be applied directly to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 26RU located at the location #6 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 10, the subcarrier number corresponding to 26RU located at position #7 in the 20M bandwidth is [172: 197], and the sequence number of the non-empty subcarrier is [177, 185, 193].

Optionally, the HE-STF sequence value corresponding to the subcarrier [177, 193] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [185] is unchanged, and the energy of the subcarrier [177, 193] is changed to half of the original value. The PAPR value corresponding to the 26RU is reduced to 4.26 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x} for the 26RU located at position #7, where the value of x includes +1 or -1, the 26RU sub- The carrier energy adjustment scheme can be applied directly to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 26RU located at the location #7 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 11, the subcarrier number corresponding to 26RU located at position #8 in the 20M bandwidth is [199: 224], and the sequence number of the non-empty subcarrier is [201, 209, 217].

Optionally, the HE-STF sequence value corresponding to the subcarriers [201, 217] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [209] is unchanged, and the energy of the subcarriers [201, 217] is changed to half of the original value. The PAPR value corresponding to the 26RU is reduced to 1.25 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x} for 26RU located at position #8, where the value of x includes +1 or -1, the 26RU sub- The carrier energy adjustment scheme can be applied directly to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes A plurality of schemes may be applied to the 26RU located at position #8 without adjusting the subcarrier energy; the subcarrier energy may be adjusted without applying the sequence; and the subcarrier energy may be adjusted while applying the sequence.

As shown in FIG. 12, the subcarrier number corresponding to 26RU located at position #9 in the 20M bandwidth is [225:250], and the sequence number of the non-empty subcarrier is [225, 233, 241, 249].

Optionally, the HE-STF sequence value corresponding to the subcarrier [225, 241, 249] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [233] is unchanged, and the power of the subcarrier [225, 241, 249] is half of the original. The PAPR value corresponding to the 26RU is reduced to 1.50 dB.

It should be understood that the value of x in the foregoing embodiment is not limited to +1 or -1. Any value of x that can reduce the PAPR value corresponding to the HE-STF sequence is within the scope of the protection of the present invention, and the embodiment of the present invention is not limited thereto. .

Therefore, the method for transmitting an HE-STF sequence according to an embodiment of the present invention determines the location of the RU#1 allocated to the user equipment in the plurality of RUs, and determines the power of the non-empty subcarriers in the RU#1 according to the location #1. And/or applying a new HE-STF sequence, and transmitting the target HE-STF sequence carried on the RU#1 to the receiving end, which can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and Reduce the transmit power of the sender.

Situation 2

In the 20M bandwidth, each layer of the frequency domain can be divided into four 52RUs. FIG. 13 to FIG. 16 are schematic diagrams of subcarrier energy obtained by performing energy adjustment on each 52RU subcarrier based on the base sequence M, and the horizontal axis represents the subcarrier sequence number. The vertical arrow represents the energy of the subcarrier.

As shown in FIG. 13, the subcarrier number corresponding to 52RU located at position #10 in the 20M bandwidth is [8:59], and the sequence number of the non-empty subcarrier is [9, 17, 25, 33, 41, 49, 57].

Optionally, the HE-STF sequence value corresponding to the subcarrier [17, 33, 41, 49] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [9, 25, 57] is unchanged, then the subcarrier [ The energy of 17, 33, 41, 49] is half of the original, and the PAPR value corresponding to the 52RU is reduced to 3.85 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, x, -x, -x, x, -x} for 52RU located at position #10, where the value of x includes +1 or -1, the 52RU subcarrier energy adjustment scheme can be directly applied to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 52RU located at the location #10 without adjusting the subcarrier energy; the sequence may not be applied. , adjusting the subcarrier energy; also applying the same sequence Adjust the subcarrier energy.

As shown in FIG. 14, the subcarrier number corresponding to 52RU located at position #11 in the 20M bandwidth is [61: 112], and the sequence number of the non-empty subcarrier is [65, 73, 81, 89, 97, 105].

Optionally, the HE-STF sequence value corresponding to the subcarrier [65, 73, 97, 105] is adjusted to 0.5, and the HE-STF sequence value corresponding to the subcarrier [81, 89] is unchanged, and the subcarrier [65, 73, The energy of 97,105] is half of the original, and the PAPR value corresponding to the 52RU is reduced to 1.25 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x, x, -x, -x} or {x, -x, -x for 52RU located at position #11. , -x, -x, x}, where the value of x includes +1 or -1, and the 52RU subcarrier energy adjustment scheme can be directly applied to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 52RU located at the location #11 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 15, the subcarrier number corresponding to 52RU located at position #12 in the 20M bandwidth is [146:197], and the sequence number of the non-empty subcarrier is [153, 161, 169, 177, 185, 193].

Optionally, the HE-STF sequence value corresponding to the subcarriers [153, 161, 185, 193] is adjusted to 0.5, and the HE-STF sequence values corresponding to the subcarriers [169, 177] are unchanged, and the energy of the subcarriers [153, 161, 185, 193] is changed to half of the original value. The PAPR value corresponding to the 52RU is reduced to 1.25 dB.

Optionally, the embodiment of the present invention proposes a new HE-STF sequence {x, x, -x, x, -x, -x} or {x, -x, -x for 52RU located at position #12. , -x, -x, x}, where the value of x includes +1 or -1, and the 52RU subcarrier energy adjustment scheme can be directly applied to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 52RU located at the location #12 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

As shown in FIG. 16, the subcarrier number corresponding to 52RU located at position #13 in the 20M bandwidth is [199:250], and the sequence number of the non-empty subcarrier is [201, 209, 217, 225, 233, 241, 249].

Optionally, the HE-STF sequence value corresponding to the subcarriers [209, 217, 225, 241] is adjusted to 0.5, and the HE-STF sequence values corresponding to the subcarriers [201, 233, 249] are unchanged, and the energy of the subcarriers [209, 217, 225, 241] is half of the original. The PAPR value corresponding to the 52RU is reduced to 3.85 dB.

Optionally, the embodiment of the present invention proposes a new one for the 52RU located at position #13. The HE-STF sequence {x, x, x, -x, -x, x, -x}, where the value of x includes +1 or -1, the 52RU subcarrier energy adjustment scheme can be directly applied to the sequence.

Specifically, the method for reducing the PAPR value corresponding to the HE-STF sequence in the embodiment of the present invention includes multiple schemes, and the sequence may be directly applied to the 52RU located at the location #13 without adjusting the subcarrier energy; the sequence may not be applied. The subcarrier energy is adjusted; the subcarrier energy can also be adjusted while applying the sequence.

It should be understood that the value of x in the foregoing embodiment is not limited to +1 or -1. Any value of x that can reduce the PAPR value corresponding to the HE-STF sequence is within the scope of the protection of the present invention, and the embodiment of the present invention is not limited thereto. .

Therefore, the method for transmitting an HE-STF sequence according to an embodiment of the present invention determines the location of the RU#1 allocated to the user equipment in the plurality of RUs, and determines the power of the non-empty subcarriers in the RU#1 according to the location #1. And/or applying a new HE-STF sequence, and transmitting the target HE-STF sequence carried on the RU#1 to the receiving end, which can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and Reduce the transmit power of the sender.

Situation 3

Under 20M bandwidth, each layer of frequency domain can be divided into 2 106RUs. Alternatively, as an embodiment, a 106RU applicable HE-STF sequence located at location #14 or #15 is {x, x, x, - x, -x, -x, x, x, -x, x, x, -x, x}, where the value of x includes +1 or -1.

Therefore, a method of transmitting an HE-STF sequence according to an embodiment of the present invention determines a location of a RU #1 allocated to a user equipment in a plurality of RUs, and applies a new HE-STF sequence according to the location #1 to receive The terminal transmits the target HE-STF sequence carried on the RU #1, which can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and reducing the transmitting power of the transmitting end.

Situation 4

In the 20M bandwidth, the frequency domain of each layer can be divided into 1 242RU. Optionally, as an embodiment, a HE-STF sequence applicable to 242RU is {-x, -x, x, x, x, -x. -x, -x, -x, -x, x, x, -x, x, x, x, x, -x, x, x, x, x, -x, x, x, -x, x, -x,x,-x}, where the value of x includes +1 or -1.

Therefore, a method of transmitting an HE-STF sequence according to an embodiment of the present invention determines a location of a RU #1 allocated to a user equipment in a plurality of RUs, and applies a new HE-STF sequence according to the location #1 to receive The terminal transmits the target HE-STF sequence carried on the RU#1, which can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and reducing the transmission of the transmitting end. Shooting power.

Optionally, in the embodiment of the present invention, before the sending process is performed on the sending end, the method 100 further includes:

S140, the sending end sends the indication information to the receiving end, where the indication information is used to indicate the location of the RU#1 in the frequency domain, where the indication information includes: bandwidth indication information, indication information of a preset manner, device information of the user equipment, and The location information of the RU #1, where the bandwidth indication information is used to indicate the size of the system frequency domain, and the device information of the user equipment is used to uniquely indicate the user equipment.

In the embodiment of the present invention, the transmitting end sends the indication information to the receiving end before performing the sending process, so that the receiving end performs the receiving process according to the indication information. The bandwidth indication information is used to indicate the size of the frequency domain used by the data to be transmitted. The indication information of the preset mode is used to indicate the division manner of the frequency domain of the system, including the number of layers divided in the frequency domain and the frequency domain of each layer. The type of the divided RU, the device information is used to uniquely indicate the user equipment that transmits the data, so that the system assigns the RU to the user equipment, and the location information of the RU #1 is used to indicate that the RU allocated to the user equipment is The specific location in the frequency domain.

Optionally, the indication information further includes transmission type information, where the transmission type information is used to indicate that the RU #1 is allocated to an IoT user, where the IoT user includes, but is not limited to, information exchange and communication according to an agreed protocol. A device or device that intelligently identifies, locates, tracks, monitors, or manages, such as a two-dimensional code reading device, a radio frequency identification (RFID) device, an infrared sensor, a global positioning system, or a laser scanner.

Optionally, the location information of the RU #1 further includes information indicating the number of subcarriers included in the RU #1.

The IoT feature has gradually become an important feature of the IEEE 802.11ax standard. Because of the small bandwidth or resource unit used by IoT users, it is especially important for IoT transmission to reduce the PAPR value of the HE-STF sequence for small RUs. Specifically, one bit may be added in the common part of the signaling to indicate that the transmission type is IoT transmission or normal transmission. For example, "0" may be used to indicate that the transmission type is IoT transmission, that is, RU#1 is allocated. For the IoT user, "1" is used to indicate that the transmission type is normal transmission; "1" can also be used to indicate that the transmission type is IoT transmission, and "0" is used to indicate that the transmission type is normal transmission.

If the transmission is IoT transmission, an additional 1 bit may be added in the common part of the signaling to indicate the number of subcarriers (26RU or 52RU) included in the RU allocated to the IoT user, for example, "0" "To indicate that the RU type assigned to the IoT user is 26RU, using "1" to refer to The RU type assigned to the IoT user is 52RU. The number of the RUs assigned to the IoT user is 26RU. The "0" is used to indicate that the RU type assigned to the IoT user is 52RU. .

Alternatively, as an embodiment, the RU assigned to the IoT user may be defined as one of the RUs located at positions #2, #4, #6, #8, #11, and #12. If the RU type assigned by the IoT user is 26RU, you can add 2 bits in the common part of the signaling to indicate the specific location of the RU in the 20M bandwidth. If the RU type assigned by the IoT user is 52RU, you can write in the letter. The public part of the command is incremented by 1 bit to indicate the specific location of the RU under the 20M bandwidth.

Specifically, if the RU type assigned by the IoT user is 26RU, "00" can be used to indicate that the RU is located at position #2, and "01" can be used to indicate that the RU is located at position #4, which can be indicated by "10". The RU is located at position #6, and "11" can be used to indicate that the RU is located at position #8; if the RU type assigned by the IoT user is 52RU, "0" can be used to indicate that the RU is located at position #11, and "1" can be used. "To indicate that the RU is located at location #12.

It should be understood that the embodiment of the present invention is not limited thereto. For example, two bits may also be used to indicate the type of transmission or the type of RU #1. Therefore, any type or RU# that can be used to indicate the transmission type or RU#1. The information of a specific location in the frequency domain belongs to the protection scope of the present invention.

Optionally, the indication information is located in a MAC layer or a PHY layer of the uplink trigger frame.

Therefore, according to the method for transmitting an HE-STF sequence according to an embodiment of the present invention, by determining the location of the RU #1 allocated to the user equipment in the plurality of RUs, the indication information of the location of the RU #1 in the frequency domain is transmitted to the receiving end. The receiving end can be made aware of the specific location of the RU that carries the HE-STF sequence allocated to the user equipment, and can save the indication resource.

A method of transmitting an HE-STF sequence according to an embodiment of the present invention is described in detail above with reference to FIGS. 1 through 16, and an apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention will be described in detail below with reference to FIG.

FIG. 17 is a schematic block diagram of an apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention. The device is applied to a wireless local area network, and the system frequency domain resources used by the wireless local area network are divided into multiple RUs according to a preset manner. As shown in FIG. 17, the device 1700 includes:

a first determining module 1710, configured to determine a location of an RU in a system frequency domain resource;

The second determining module 1720 is configured to determine, according to the location of the RU in the system frequency domain resource determined by the first determining module 1710, the transmit power of the non-empty subcarrier carried in the RU;

The first sending module 1730 is configured to send, according to the transmit power determined by the second determining module 1720, A HE-STF sequence corresponding to the RU is sent.

The apparatus for transmitting the HE-STF sequence in the embodiment of the present invention determines the location of the RU #1 allocated to the user equipment in the multiple RUs, and performs transmission processing according to the location #1, and sends the bearer to the RU# to the receiving end. The target HE-STF sequence on 1 can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and reducing the transmitting power of the transmitting end.

Optionally, the device 1700 further includes:

The second sending module 1740 is configured to: before the first sending module 1730 sends the HE-STF sequence, send indication information to the receiving end, where the indication information is used to indicate the location of the RU#1 in the frequency domain, and the indication information includes The bandwidth indication information, the indication information of the preset mode, the device information of the user equipment, and the location information of the RU#1, wherein the bandwidth indication information is used to indicate the size of the frequency domain of the system, and the device information of the user equipment is used for unique The user equipment is indicated.

The apparatus for transmitting the HE-STF sequence provided by the embodiment of the present invention can send the indication information of the location of the RU#1 in the frequency domain to the receiving end, so that the receiving end can know the RU of the bearer carrying the HE-STF sequence allocated to the user equipment. Specific location and saving indicator resources.

Optionally, the indication information further includes transmission type information, where the transmission type information is used to indicate that the RU #1 is allocated to the IoT user.

Optionally, the location information of the RU #1 includes information indicating the number of subcarriers included in the RU.

Optionally, the indication information is located at a MAC layer or a PHY layer of an uplink trigger frame.

Optionally, the second determining module 1720 is specifically configured to: determine, by determining a power normalization factor of the non-empty subcarrier, a transmit power of the non-empty subcarrier in the RU#1.

The apparatus 1700 for transmitting an HE-STF sequence according to an embodiment of the present invention may correspond to a transmitting end in the method 100 of the embodiment of the present invention, and the above and other operations and/or operations of the respective modules in the apparatus 1700 for transmitting information in FIG. The functions are respectively used to implement the corresponding processes of the various steps of the method 100 in FIG. 1. For brevity, no further details are provided herein.

Therefore, the apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention determines the location of the RU#1 allocated to the user equipment in the plurality of RUs, and determines the power of the non-empty subcarriers in the RU#1 according to the location #1. And/or applying a new HE-STF sequence, and transmitting the target HE-STF sequence carried on the RU#1 to the receiving end, which can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and Reduce the transmit power of the sender.

Hereinabove, the transmission HE-STF according to an embodiment of the present invention is described in detail with reference to FIGS. 1 through 17. Method and Apparatus of Sequence, an apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention will be described in detail below with reference to FIG.

FIG. 18 is a schematic block diagram of an apparatus for transmitting an HE-STF sequence according to an embodiment of the present invention. As shown in FIG. 18, the device 1800 includes a processor 1810, a memory 1820, a bus system 1830, and a transceiver 1840. The processor 1810, the memory 1820, and the transceiver 1840 are connected by a bus system 1830 for storing instructions for executing instructions stored by the memory 1820 to control the transceiver 1840 to receive signals or transmit signals. .

The processor 1810 is configured to determine a location of a RU in a system frequency domain resource, and determine, according to a location of the RU in a system frequency domain resource, a transmit power of a non-empty subcarrier carried in the RU, the transceiver 1840 is configured to perform a transmission process according to the transmit power determined by the processor 1810, and send a HE-STF sequence corresponding to the RU to the receiving end.

Therefore, the apparatus for transmitting the HE-STF sequence according to the embodiment of the present invention determines the location of the RU #1 allocated to the user equipment in the plurality of RUs, and performs transmission processing according to the location #1, and transmits the bearer to the receiving end. The target HE-STF sequence on the RU #1 can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and reducing the transmitting power of the transmitting end.

It should be understood that, in the embodiment of the present invention, the processor 1810 may be a central processing unit (CPU), and the processor 1810 may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits. (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 1820 can include read only memory and random access memory and provides instructions and data to the processor 1810. A portion of memory 1820 may also include non-volatile random access memory. For example, the memory 1820 can also store information of the device type.

The bus system 1830 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1830 in the figure.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1810 or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. Software modules can be located in random access memory, flash memory, read-only memory, programmable Read-only memory or electrically erasable programmable memory, registers, etc. are well-established in the storage medium of the art. The storage medium is located in the memory 1820, and the processor 1810 reads the information in the memory 1820 and, in conjunction with its hardware, performs the steps of the above method. To avoid repetition, it will not be described in detail here.

Optionally, as an embodiment, before transmitting the HE-STF sequence, the transceiver 1840 is further configured to: send, to the receiving end, indication information, where the indication information is used to indicate the location of the RU#1 in the frequency domain, the indication The information includes: bandwidth indication information, indication information of a preset mode, device information of the user equipment, and location information of the RU #1, where the bandwidth indication information is used to indicate the size of the frequency domain of the system, and the device information of the user equipment is used. The user device is uniquely indicated.

The apparatus for transmitting the HE-STF sequence provided by the embodiment of the present invention can send the indication information of the position of the RU#1 in the frequency domain to the receiving end, so that the receiving end can know the RU that carries the HE-STF sequence allocated to the user equipment. Specific location and saving indicator resources.

Optionally, as an embodiment, the transceiver 1840 sends transmission type information to the receiving end, where the transmission type information is used to indicate that the RU #1 is assigned to the IoT user.

Optionally, as an embodiment, the transceiver 1840 transmits information indicating the number of subcarriers included in the RU #1 to the receiving end.

Optionally, as an embodiment, the transceiver 1840 sends the indication information of the MAC layer or the PHY layer carried in the uplink trigger frame to the receiving end.

Optionally, as an embodiment, the processor 1810 determines a transmit power of the non-empty subcarrier in the RU#1 by determining a power normalization factor of the non-empty subcarrier.

The device 1800 transmitting the HE-STF sequence according to an embodiment of the present invention may correspond to the transmitting device in the method of the embodiment of the present invention, and the above and other operations of the respective modules in the device 1800 transmitting the HE-STF sequence in FIG. And/or functions, respectively, are used to implement the corresponding processes of the various steps of the method 100 in FIG. 1 , and are not described herein again for brevity.

Therefore, the apparatus for transmitting the HE-STF sequence according to the embodiment of the present invention determines the location of the RU#1 allocated to the user equipment in the plurality of RUs, and determines the power of the non-empty subcarriers in the RU#1 according to the location #1. And/or applying a new HE-STF sequence, and transmitting the target HE-STF sequence carried on the RU#1 to the receiving end, which can reduce the PAPR value corresponding to the HE-STF sequence, thereby improving the signal coverage of the transmitting end and Reduce the transmit power of the sender.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, in accordance with function one in the above description The composition and steps of the examples are generally described. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims (10)

A method for transmitting an efficient short training domain HE-STF sequence is characterized in that it is applied to a wireless local area network, and the system frequency domain resource used by the wireless local area network is divided into a plurality of resource units RU according to a preset manner, and the method includes : The sender determines the location of an RU in the frequency domain resource of the system; Determining, by the sending end, a transmit power of the non-empty subcarrier included in the RU according to a location of the RU in the frequency domain resource of the system; The transmitting end transmits a HE-STF sequence corresponding to the RU according to the transmit power. The method according to claim 1, wherein before the transmitting end sends the HE-STF sequence, the method further comprises: The sending end sends the indication information, where the indication information is used to indicate the location of the RU in the frequency domain resource of the system, where the indication information includes: bandwidth indication information, indication information of the preset mode, and user equipment. The device information and the location information of the RU, wherein the bandwidth indication information is used to indicate a size of the frequency domain resource of the system, and the device information of the user equipment is used to uniquely indicate the user equipment. The method according to claim 2, wherein the indication information further comprises transmission type information, the transmission type information being used to indicate that the RU is allocated to an Internet of Things IoT user. The method according to claim 2 or 3, wherein the location information of the RU comprises information indicating the number of subcarriers included in the RU. The method according to any one of claims 2 to 4, wherein the indication information is located in a medium access control MAC layer or a physical PHY layer of an uplink trigger frame. An apparatus for transmitting an efficient short training domain HE-STF sequence is characterized in that it is applied to a wireless local area network, and the system frequency domain resource used by the wireless local area network is divided into a plurality of resource units RU according to a preset manner, and the device includes : a first determining module, configured to determine a location of an RU in a frequency domain resource of the system; a second determining module, configured to determine, according to the location of the RU in the frequency domain resource of the system, determined by the first determining module, a transmit power of a non-empty subcarrier included in the RU; And a first sending module, configured to send, according to the transmit power determined by the second determining module, a HE-STF sequence corresponding to the RU. The device according to claim 6, wherein the device further comprises: a second sending module, configured to send indication information, where the indication information is used to indicate a location of the RU in the frequency domain resource of the system, before the first sending module sends the HE-STF sequence, The indication information includes: bandwidth indication information, indication information of the preset manner, device information of the user equipment, and location information of the RU, where the bandwidth indication information is used to indicate a size of the frequency domain resource of the system, where The device information of the user equipment is used to uniquely indicate the user equipment. The apparatus according to claim 7, wherein the indication information further comprises transmission type information, the transmission type information being used to indicate that the RU is allocated to an Internet of Things IoT user. The apparatus according to claim 7 or 8, wherein the location information of the RU comprises information indicating a number of subcarriers included in the RU. The apparatus according to any one of claims 7 to 9, wherein the indication information is located in a medium access control MAC layer or a physical PHY layer of an uplink trigger frame.

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