WO2017076021A1

WO2017076021A1 - Method of transmitting data frame and associated equipment

Info

Publication number: WO2017076021A1
Application number: PCT/CN2016/087950
Authority: WO
Inventors: 刘云; 林梅露; 刘乐
Original assignee: 华为技术有限公司
Priority date: 2015-11-06
Filing date: 2016-06-30
Publication date: 2017-05-11
Also published as: CN106685618B; CN106685618A

Abstract

The embodiments of the invention provide a method of transmitting a data frame and an associated equipment, selecting a suitable transmission structure from a plurality of available high efficiency signal-B field transmission structures to support load balance of high efficiency signal-B fields, thereby preventing a spectrum waste. Furthermore, in the plurality of the transmission structures, transmitting a high efficiency signal-B field corresponding to each of frequency bands on a respective frequency band can implement a co-channel transmission, ensuring operation performance for a user.

Description

Method for transmitting data frame and related device

This application claims priority to Chinese Patent Application No. 201510753001.8, entitled "A Method for Sending Data Frames and Related Devices", filed on November 6, 2015, the entire contents of which are incorporated by reference. In this application.

Technical field

The present invention relates to the field of communications, and in particular, to a method for transmitting a data frame and related devices.

Background technique

In a wireless local area network (WLAN), as shown in FIG. 1, an access point (AP) is responsible for two-way communication with multiple stations (Stations, STAs), that is, the AP sends downlink data to the STA. Or receive uplink data from the STA.

The existing WLAN (Wireless Local Access Network (WLAN) standard based on Orthogonal Frequency-Division Multiplexing (OFDM) technology consists of gradual evolution of 802.11a, 802.11n, 802.11ac, etc., currently IEEE 802.11 The standards organization has initiated the standardization of 802.11ax, a next-generation WLAN standard called High Efficiency WLAN (HEW), which supports Orthogonal Frequency-Division Multiple Access (OFDM). OFDMA) technology. The orthogonal frequency division multiplexing multiple access technology divides the wideband channel into a plurality of mutually orthogonal subcarriers in the frequency domain, and allocates different subcarriers for different users, thereby implementing orthogonal multiplexing transmission of multiple users.

Referring to FIG. 2, the data frame in the physical layer packet structure of 802.11ax is introduced. The structure of the data frame includes a legacy short training field (L-STF) and a legacy long training field (Legacy Long Training field, L). -LTF) and a field consisting of a legacy signaling field (L-SIG) and its Repeat Legacy Signal field (RL-SIG); after that, the middle part is composed of High Efficiency Signal-A (High Efficiency Signal-A) Field, HE-SIG-A), High Efficiency Signal-B field (HE-SIG-B), High Efficiency Short Training Field (HE-STF) and high efficiency long training Fields such as HighEfficiency Long Training field (HE-LTF), and finally data fields. Among them, the data field is used for data transmission, and the fields such as L-SIG, RL-SIG, HE-SIG-A and HE-SIG-B are respectively used to transmit different types of physical layer signaling, L-STF, L-LTF, Fields such as HE-STF and HE-LTF are mainly used for receiving timing and frequency synchronization, automatic gain control and channel estimation. Figure 3 As shown, HE-SIG-A is used to carry information such as bandwidth, basic service set (BSS) such as AP identifier, and STAs that are read by the overlapping basic service set (Overlapped BSS, OBSS).

FIG. 2 shows that an AP performs data transmission to multiple STAs simultaneously by using multiple resource blocks in a Downlink (DL) OFDMA scheme. Among them, several STAs can also share the same resource block and perform data transmission on their respective spatial streams by means of MU-MIMO. At this time, the AP divides the entire bandwidth into multiple resource blocks, and uses multiple resource blocks to perform data transmission on multiple STAs. In order to let the STA know whether it is the destination STA or not, the destination STA needs to know the location of the data and the physical layer parameters of the received data, and the AP needs to perform the resource scheduling information indication before the resource block is allocated. For the downlink multi-user transmission, The resource scheduling information of multiple users is usually included in the HE-SIG-B, and the multiple STAs are instructed to receive data.

Figure 4 is a possible structure of HE-SIG-B, which includes a public domain (HE-SIG-B common) and a site-by-site domain (HE-SIG-B dedicated). The public domain contains some common information that all destination STAs need to read, such as Resource allocation Signaling (RASignaling). Each STA is included in a site-by-site domain or a group of STAs in the same resource block needs to be read. Scheduling information.

When the transmission bandwidth is greater than 20 MHz, the preamble portion needs to be transmitted on every 20 MHz band. For L-STF, L-LTF, L-SIG, RL-SIG, and HE-SIG-A, copy transmission is performed on each 20M; for efficient signaling field B part HE-SIG-B, partial copy is used. Transmission structure. Taking 80M transmission as an example, the transmission of the leading part is specifically as shown in FIG. 5.

It can be seen that HE-SIG-B carries different content in the odd 20M Hz band and the even 20M Hz band, while the odd 20M Hz band carries the same content, the even 20M Hz band (the second 20M Hz band and the fourth The same content is carried on the 20M Hz band, as shown in Figure 6. The HE-SIG-B on the odd 20M Hz band is SIGB-1, and the HE-SIG-B on the even 20M Hz band is SIGB-2. Content contained in SIGB-1 and SIGB-2, including public domain and site-by-site domains. SIGB-1 contains resource indication information (RA signaling) for the first 20M Hz band and the third 20M Hz band and scheduling information for users transmitting on the first and third 20M Hz bands. SIGB-2 contains resource indication information (RA signaling) for the second 20M Hz band and the fourth 20M Hz band and scheduling information for users transmitting on the second and fourth 20M Hz bands. For the transmission bandwidth of the 20M Hz band, only one HE-SIGB (SIGB-1) is included. Correct The transmission bandwidth at 40MHz includes SIGB-1 and SIGB-2, but both SIGB-1 and SIGB-2 contain only a resource allocation transmission structure indication and user scheduling information on a 20M Hz band. SIGB-1 contains the first 20M. In the Hertz band (odd 20M Hz band), SIGB-2 contains the second 20M Hz band (even 20M Hz band).

For the convenience of recording, the following expression [1, 2, 1, 2] is defined in the HE-SIG-B transmission structure in FIG. 5 and FIG. From top to bottom, the HE-SIG-B information transmitted on the first 20M Hz band and the third 20M Hz band is the same, recorded as the first position and the third in [1, 2, 1, 2] The position "1", that is, the "1" indicates the aforementioned SIGB-1; the second 20M Hz band and the HEM-SIG-B information transmitted on the fourth 20M Hz band are the same, denoted as [1, 2, "2" of the first position and the third position in 1, 2], that is, the aforementioned SIGB-2 is represented by "2".

However, this [1, 2, 1, 2] structure has defects in the transmission process, when there are more users in the first 20M Hz band and the third 20M Hz band, and the second 20M Hz band When the number of users in the fourth 20M Hz band is small, the structure of SIGB-1 will be much longer than SIGB-2, since the end position of HE-SIG-B is the same in different 20M Hz bands. After the transmission of the second 20M Hz band and the fourth 20M Hz band of SIGB-2 is completed, idleness occurs in the band, resulting in waste. This waste is caused by the single transmission structure of HE-SIG-B. This single structure can not be well adapted to the flexible allocation and scheduling of HE-SIG-B under different scenarios and under different loads, resulting in waste of resources. .

If it is based on the number of users in different 20M Hz bands, flexible pairing, load balancing, constitute SIGB-1 and SIGB-2, and still transmit according to [1, 2, 1, 2]. For example, when the first 20M Hz band, the third 20M Hz band, and the fourth 20M Hz band have fewer users, and the second 20M Hz band has more users, the first 20M Hz can be used. The resource indication information in the frequency band, the third 20M Hz band and the fourth 20M Hz band and the scheduling information of the transmitted user are combined into SIGB-1, and the resource indication information and the transmitted user scheduling on the second 20M Hz band The information constitutes SIGB-2, transmitting SIGB-1 in the first 20M Hz band and the third 20M Hz band according to the transmission structure of [1, 2, 1, 2], in the second 20M Hz band and the fourth The SIMB-2 is transmitted in the 20M Hz band. However, there is a problem with this transmission structure, that is, the resource indication information and the transmitted user scheduling information in the fourth 20M Hz band are transmitted only in the first 20M Hz band and the third 20M Hz band, and in the fourth 20M Hertz frequency There is no transmission on the segment, and the AP cannot guarantee how the channel conditions of the users in the first 20M Hz band and the third 20M Hz band are affected by the interference in the fourth 20M Hz band, even if the flexible pairing constitutes SIGB-1 and SIGB. -2, but still transmitted according to the structure of [1, 2, 1, 2], or will reduce the performance of the user in the fourth 20M Hz band.

The current transmission structure of HE-SIG-B causes HE-SIG-B to transmit in a frequency band exceeding 20 MHz, which cannot be adapted to various load situations in reality, resulting in waste of resources.

Summary of the invention

In view of this, an embodiment of the present invention provides a method for transmitting a data frame.

An object of the present application is a method for transmitting a data frame for a local area network of orthogonal frequency division multiple access, the method comprising:

The access point generates at least one data frame according to the data to be transmitted, where the data frame includes an efficient signaling field A and an efficient signaling field B, where the high-efficiency signaling field A is used to identify related information of the high-efficiency signaling field B. The high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

When the transmission bandwidth X is greater than the first threshold, the access point divides the transmission bandwidth into Y frequency bands in sequence, each frequency band has a respective efficient signaling field B, and the efficient signaling field B of each frequency band is Transmitting on the respective frequency bands, selecting a suitable transmission structure in a plurality of available high-efficiency signaling field B transmission structures, and carrying the high-efficiency signaling field B of the Y frequency bands in the data frame;

The access point transmits a data frame including the transmission structure to a receiving end.

The present application provides a plurality of transmission efficient signaling field B transmission structures, and selects an applicable transmission structure among a plurality of available high-efficiency signaling field B transmission structures, which is used to support load balancing of the B portion of the high-efficiency signaling field, thereby avoiding spectrum waste. In addition, in a plurality of transmission structures, the high-efficiency signaling field B of each frequency band is transmitted on the respective frequency bands, and the same-frequency transmission can be realized, thereby ensuring user performance.

Another object of the present application is to provide a wireless communication apparatus for a local area network of orthogonal frequency division multiple access, the access point comprising:

And a generating unit, configured to generate at least one data frame according to the data to be transmitted, where the data frame includes an efficient signaling field A and an efficient signaling field B, where the high-efficiency signaling field A is used to identify the correlation of the high-efficiency signaling field B Information, the high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

a configuration unit, configured to divide the transmission bandwidth into Y in order when the transmission bandwidth X is greater than the first threshold Frequency bands, each frequency band has its own efficient signaling field B, and the efficient signaling field B of each frequency band is transmitted on its own frequency band, and the applicable transmission structure is selected among multiple available high efficiency signaling field B transmission structures. And transmitting the efficient signaling field B of the Y frequency bands to the data frame.

Correspondingly, a wireless communication method and apparatus are also provided, wherein the receiving end can receive a data frame generated and sent by the foregoing sending end, where the high-efficiency signaling field A of the data frame includes an indication for explicitly indicating Information of a transmission structure of the efficient signaling field B, or information implicit in the efficient signaling field B containing a transmission structure indicating the efficient signaling field B; a transmission structure according to the explicit or implicit indication The efficient signaling field B is parsed.

The access point provided by the present application selects an applicable transmission structure in a plurality of available high-efficiency signaling field B transmission structures, which is used to support load balancing of the B part of the high-efficiency signaling field, avoiding waste of spectrum, and additionally transmitting in multiple transmissions. In the structure, the efficient signaling field B of each frequency band is transmitted on the respective frequency bands, and the same frequency transmission can be realized, thereby ensuring the user performance.

DRAWINGS

1 is a schematic diagram of data transmission between an access point and a receiving end in the prior art;

2 is a schematic diagram of a prior art data frame structure;

3 is a schematic diagram of a structure of a prior art efficient signaling field A;

4 is a schematic diagram of a structure of a prior art efficient signaling field B;

5 is a schematic diagram of a transmission structure of a prior art efficient signaling field B;

6 is a schematic diagram of a specific structure of a transmission structure of a prior art efficient signaling field B;

7a is a flow chart of an embodiment of a method of transmitting a data frame provided by the present invention;

7 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

8 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

9 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

10 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

11 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

12 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

13 is a schematic diagram of an embodiment of a transmission structure of a method for transmitting a data frame provided by the present invention;

14 is a structural diagram of an embodiment of an access point provided by the present invention, partially showing a wireless communication device;

15 is a block diagram of an embodiment of an access point or site provided by the present invention.

detailed description

The embodiments of the present invention provide a method for transmitting a data frame and related equipment, and provide a plurality of transmission efficient signaling field B transmission structures, which are used to support load balancing of the B part of the high-efficiency signaling field, thereby avoiding waste of spectrum, and additionally In the structure, the same frequency transmission can be realized, and the performance of the user is guaranteed.

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 an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order. Or prioritization. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The access point can be applied in the orthogonal frequency division multiple access LAN in the 802.11ax standard, and the receiving end can be a terminal device, such as a mobile phone or a tablet computer, and the access point sends downlink data to the receiving end through the downlink, and receives. The terminal sends uplink data to the access point through the uplink.

As shown in FIG. 7a, the method for transmitting a data frame provided by the present invention is used for a local area network of orthogonal frequency division multiple access, and the method includes:

S101. The access point generates at least one data frame according to the data to be transmitted, where the data frame includes high efficiency. The signaling field A and the high-efficiency signaling field B, wherein the high-efficiency signaling field A is used to identify related information of the high-efficiency signaling field B, and the high-efficiency signaling field B is used to transmit user scheduling information and resource indication information;

S102. When the transmission bandwidth X is greater than the first threshold, the access point divides the transmission bandwidth into Y frequency bands in sequence, each frequency band has a respective efficient signaling field B, and an efficient signaling field of each frequency band is used. B is transmitted on the respective frequency bands, and the applicable transmission structure is selected in a plurality of available high-efficiency signaling field B transmission structures, and the high-efficiency signaling field B of the Y frequency bands is carried in the data frame;

S103. The access point sends a data frame including the transmission structure to a receiving end.

The transmission of the efficient signaling field B of each frequency band in the respective frequency bands can be understood as that the efficient signaling field B of the first 20M Hz frequency band needs to be transmitted on the first 20M Hz frequency band, so that the same frequency transmission can be satisfied. The requirements to ensure the user's performance.

Optionally, selecting a suitable transmission structure among the plurality of available efficient signaling field B transmission structures may select an applicable transmission structure according to a principle of minimizing the length of the efficient signaling field B, so that a plurality of high-efficiency signals of 20 MHz frequency bands are obtained. Let the length of the field B be the same or similar.

The transmission bandwidth can be 80M Hz or 160M Hz. When using 80M Hz, each band is allocated 20M Hz, then four 20M Hz bands can be allocated. When 160M Hz is used, eight 20M Hz bands can be allocated. It is a top-to-bottom sequence, that is, it is considered that the data frames are read in the order from top to bottom, and each 20M Hz band carries the access point allocation resource indication information and user allocation information. That is, the resources used by the user are allocated, and the receiving end can obtain the location of the resources that need to be obtained by parsing the data frames. .

The manner of combining the frequency bands according to the principle of the minimum length of the high-efficiency signaling field B may be combined according to the resource indication information and the user scheduling information on each frequency band, so that the total length of the efficient signaling field B after the combination is balanced.

A bandwidth of 20 MHz is allocated in each frequency band, and a frequency band that can be combined with other users when the number of users in the frequency band is small is combined, and the efficient signaling field B after the combination is copied and transmitted on each channel participating in the combination, for example, three. The efficient signaling field B of the frequency bands is combined, and the efficient signaling field B obtained after the combination is replicated and transmitted in the three frequency bands respectively, where the copy transmission means that the content transmitted in multiple frequency bands is the same.

According to different transmission bandwidths, different number of frequency bands can be allocated. When the transmission bandwidth is determined, the number of corresponding allocated frequency bands can be determined, and data can be used according to resource indication information and user allocation information on each frequency band. Transmission, the following describes the combination of frequency bands.

When the transmission bandwidth is 80 megahertz, the first threshold is 40 megahertz, and the transmission structure that can be provided is given by way of example:

The access point divides 80 MHz into four 20 MHz frequency bands in sequence, which are the first 20 MHz band, the second 20 MHz band, the third 20 MHz band, and the fourth 20 MHz band, in which order Named in order from top to bottom, wherein resource indication information and user allocation information transmitted in the first 20M Hz band and resource indication information transmitted in the efficient signaling field B of the second 20M Hz band are used. And the user allocation information is different, so that when the data reading of the frequency band is performed, when the first 20M Hz frequency band and the second 20M Hz frequency band are read, the transmission structure of the entire data frame can be parsed, so that the data frame can be provided. Analytical efficiency.

When the transmission bandwidth is 80 megahertz, the first threshold is 40 megahertz, an embodiment of the transmission structure:

As shown in FIG. 7, the transmission structure is 1, 2, 2, 1 wherein the "1, 2, 2, 1" represents the first 20M Hz band and the fourth 20M Hz band. Resource indication information and user scheduling information are repeatedly transmitted on the first 20M Hz frequency band and the fourth 20M Hz frequency band, and resource indication information on the second 20M Hz frequency band and the third 20M Hz frequency band And user scheduling information is repeatedly transmitted on the second 20M Hz band and the third 20M Hz band.

When the transmission bandwidth is 80 megahertz, the first threshold is 40 megahertz, another embodiment of the transmission structure:

The transmission structure is 1, 2, 1, 1, wherein the "1, 2, 1, 1" represents the first 20M Hz band, the third 20M Hz band, and the fourth 20M Hz Resource indication information and user scheduling information on the frequency band are repeatedly transmitted in the first 20M Hz frequency band, the third 20M Hz frequency band, and the fourth 20M Hz frequency band, and resources in the second 20M Hz frequency band The indication information and user scheduling information are transmitted on the second 20M Hz frequency band.

The transmission structure is 1, 2, 2, 2, wherein the "1, 2, 2, 2" indicates resource indication information and user scheduling information on the first 20M Hz band in the first 20M Hz band Up, the second 20M Hz band, the third 20M Hz band, and the fourth 20M Hz band resource indication information and user scheduling information in the second 20M Hz band, the first Repeat transmission on the three 20M Hz bands and the fourth 20M Hz band.

In various embodiments herein, where 1 in the transport structure represents the first transport structure of the efficient signaling field B, ie SIGB-1, 2 in the transport structure represents the second transport structure of the efficient signaling field B, That is, SIGB-2, which will not be described below.

When the transmission bandwidth is 160 megahertz, the first threshold is 40 megahertz, and when the transmission bandwidth X is greater than the first threshold, the access point divides the transmission bandwidth into Y frequency bands in sequence, and specifically includes:

The access point divides 160 MHz into eight 20M Hz frequency bands, which are the first 20M Hz band, the second 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, and the fifth. a 20M Hz band, a sixth 20M Hz band, a seventh 20M Hz band, and an eighth 20M Hz band, where the order can be from top to bottom, where the first 20M Hz band is efficient The signaling field B is different from the efficient signaling field B of the second 20M Hz band.

When the transmission bandwidth is 160 megahertz and the first threshold is 40 megahertz, an embodiment of the transmission structure:

The transmission structure is 1, 2, 2, 1, 1, 2, 2, 1, wherein the "1, 2, 2, 1, 2, 2, 1" represents the first 20M Hz band, Resource indication information and user scheduling information of the fourth 20M Hz frequency band, the fifth 20M Hz frequency band, the eighth 20M Hz frequency band, and the first 20M Hz frequency band, the fourth Repeat transmission on the 20M Hz band, the fifth 20M Hz band, the eighth 20M Hz band, the second 20M Hz band, the third 20M Hz band, and the sixth 20M Hz band The resource indication information of the seventh 20M Hz band is combined with the user scheduling information and is repeated in the second 20M Hz band, the third 20M Hz band, the sixth 20M Hz band, and the seventh 20M Hz band. transmission.

When the transmission bandwidth is 160 megahertz and the first threshold is 40 megahertz, another embodiment of the transmission structure:

The transmission structure is 1, 2, 1, 1, 1, 2, 1, 1, wherein the "1, 2, 1, 1, 1, 2, 1, 1" represents the first 20M Hz frequency band, Resource indication information and user scheduling information of the third 20M Hz frequency band, the fourth 20M Hz frequency band, the fifth 20M Hz frequency band, the seventh 20M Hz frequency band, and the eighth 20M Hz frequency band And in the first 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, the fifth 20M Hz band, the seventh 20M Hz band, the eighth Repeated transmission on the 20M Hz band, the resource indication information of the second 20M Hz band and the sixth 20M Hz band is combined with the user scheduling information and is in the second 20M Hz band and the sixth 20M Hz band. Repeat the transfer.

The transmission structure is 1, 2, 2, 2, 1, 2, 2, 2, wherein the "1, 2, 2, 2, 1, 2, 2, 2" represents the first 20M Hz band, The resource indication information and the user scheduling information on the fifth 20M Hz band are combined and repeatedly transmitted in the first 20M Hz band and the fifth 20M Hz band, the second 20M Hz band, the The third 20M Hz band, the fourth 20M Hz band, the sixth 20M Hz band, the seventh 20M Hz band, the eighth 20M Hz band resource indication information and user scheduling information are combined and 2. The third 20M Hz frequency band, the fourth 20M Hz frequency band, the sixth 20M Hz frequency band, the seventh 20M Hz frequency band, and the eighth 20M Hz frequency band are repeatedly transmitted.

The transmission structure is 1, 2, 3, 4, 1, 2, 3, 4, wherein the "1, 2, 3, 4, 1, 2, 3, 4" represents the first 20M Hz frequency band, The resource indication information and the user scheduling information on the fifth 20M Hz frequency band are combined and repeatedly transmitted in the first 20M Hz frequency band and the fifth 20M Hz frequency band, and the second 20M Hz frequency band, The resource allocation and user scheduling information of the sixth 20M Hz band are combined and repeated transmission in the second 20M Hz band and the sixth 20M Hz band, the third 20M Hz band and the seventh 20M Hz band The resource indication information is combined with the user scheduling information and is repeatedly transmitted in the third 20M Hz band and the seventh 20M Hz band, and the fourth 20M Hz band and the eighth 20M Hz band are used for transmission. The source indication information is combined with the user scheduling information and is repeatedly transmitted on the fourth 20M Hz frequency band and the eighth 20M Hz frequency band, where 1 represents the first transmission structure of the high efficiency signaling field B, and 2 represents a high efficiency signal. Let the second transmission structure of field B.

When the explicit indication is adopted, the indication information indicating the transmission structure of the efficient signaling field B is carried in the efficient signaling field A, and the indication information may adopt one bit and two bits. Three bits or four bits are used to indicate the transmission structure. Therefore, according to the difference in the number of indication information bits, the present application provides some embodiments for the transmission structure, and the following is divided into two cases: 80 MHz and 160 MHz:

When the transmission bandwidth is 80M Hz

80M Hertz Embodiment 1: An embodiment in which the indication information adopts one bit

The transmission structure can transmit the efficient signaling field B using two transmission structures [1, 2, 1, 2] and [1, 2, 2, 1].

As shown in FIG. 7, when the transmission structure is 1, 2, 2, 1, the resource indication information and the user scheduling information on the first 20 MHz band and the fourth 20 MHz band are indicated. Repeated transmission on the first 20M Hz band and the fourth 20M Hz band, resource indication information and user scheduling information on the second 20M Hz band and the third 20M Hz band in the second The transmission is repeated on the 20M Hz band and the third 20M Hz band. That is, the information of the high-efficiency signaling field B transmitted in the first 20M Hz band and the fourth 20M Hz band is the same, and the information of the high-efficiency signaling field B transmitted in the second 20M Hz band and the third 20M Hz band is the same. .

It should be noted that even if the [1, 2, 1, 2] transmission structure is adopted, the [1, 2, 1, 2] transmission structure in this application utilizes an explicit indication (ie, an indication in the efficient signaling field A). The information) or implicitly indicated method indicates to the receiving end.

The access point determines each 20M Hz band resource indication information and user scheduling information, and the access point is recorded as transmission structure 1 in [1, 2, 1, 2], or [1, 2, 2, 1] is recorded as a transmission structure. 2. Select one of the two transmission structures to transmit the information of the high-efficiency signaling field B. The access point may reduce one of the two transmission structures according to the total length of the efficient signaling field B according to the load balancing, and the access point serves as the transmitting end. A bit indication information may be used to indicate which transmission structure is selected by the receiving end efficient signaling field B, the indication information may be stored in the high efficiency signaling field A, and the manner of identifying the transmission structure by using the indication information is Explicit indication.

指示信息Instructions	传输结构Transmission structure
第一值First value		传输结构1Transmission structure 1
第二值Second value	传输结构2Transmission structure 2

Table 1 shows the high-efficiency signaling field B with 1 bit indication information at 80 MHz.

As shown in Table 1, the high-efficiency signaling field A uses one bit indication information, the first value of the indication information is 0, the second value is 1, or the first value of the indication information is 1, and the second value is 0.

Optionally, the indication information may be determined according to a third 20M Hz frequency band corresponding to the transmission structure. For example, when the transmission structure is [1, 2, 1, 2], the third 20M Hz frequency band corresponds to a value of 1. At this time, the indication information takes the first value; the indication information may determine the indication information according to the corresponding value of the fourth 20M Hz frequency band in the transmission structure, for example, the value corresponding to the fourth 20M Hz frequency band when [1, 2, 1, 2] If it is 2, the indication information takes the second value.

Optionally, the access point, as the transmitting end, may not display the transmission structure of the receiving end efficient signaling field B, but adopts an implicit indication method. The implicit indication method does not need to occupy the indicated signaling character bits in the efficient signaling field A.

Optionally, the access point, as the sending end, may perform a scrambling operation on a part of the information of the high-efficiency signaling field B, that is, multiply by a scrambling code to increase the degree of discrimination, where the scrambling code is one by +1 or -1. The sequence of compositions is known at both the receiving end and the transmitting end. For example, when the transmission structure is [1, 2, 1, 2], the access point as the transmitting end can multiply the partial information of the efficient signaling field B of the transmission of the first 20M Hz band and the third 20M Hz band. Using the scrambling code, increasing the discrimination degree of the transmission efficient signaling field B on the second 20M Hz band and the fourth 20M Hz band, that is, the discrimination degree of SIGB-1 and SIGB-2, the discrimination degree refers to How many different signals are there between SIGB-1 and SIGB-2, the more different signals, the greater the degree of discrimination;

For the addition of SIGB-1 and SIGB-2, the access point may also additionally transmit some feature bits in the efficient signaling field B for distinguishing between SIGB-1 and SIGB-2. For example, some bits are additionally transmitted in the frequency band transmitted by SIGB-1, and these bits are not transmitted in the frequency band where SIGB-2 is located; or some characteristic bits are additionally transmitted in all frequency bands, in the frequency band transmitted by SIGB-1. These feature bits are a set value. In the frequency band transmitted by SIGB-2, these feature bits are another set value, and the two set values are different. These feature bits can be added to the efficient signaling word as a new field. The public domain of segment B.

After the receiving end receives the data frame sent from the access point and parses it to obtain the transmission structure of the high-efficiency signaling field B, when the access point adopts the explicit indication method, the receiving end parses the high-efficiency signaling field A, which can be The obtaining of the efficient signaling field A is used to indicate the indication information of the efficient signaling field B transmission structure. According to the indication information, the receiving end determines the transmission structure type of the efficient signaling field B, that is, [1, 2, 1, 2] [1,2,2,1]. According to the transmission structure of the indicated high-efficiency signaling field B, the receiving end combines the efficient signaling field B of the corresponding channel for joint decoding, that is, if the indicated transmission structure is [1, 2, 2, 1], the receiving end can The information of the high-efficiency signaling field B transmitted on the first 20M Hz band and the fourth 20M Hz band is jointly decoded to obtain the resource indication information and the user respectively in the first 20M Hz band and the fourth 20M Hz band. Scheduling information, the receiving end can jointly decode the information of the second 20M Hz band and the third 20M Hz band of the high-efficiency signaling field B to obtain the second 20M Hz band and the third 20M Hz band respectively. Resource indication information and user scheduling information.

When the access point adopts the implicit indication method, after receiving the high-efficiency signaling field B, the receiving end compares the information of the high-efficiency signaling field B of different 20M Hz frequency bands or the partial information of the high-efficiency signaling field B for detection. If the transmitting end adopts the scrambling processing method, the receiving end multiplies all the information or partial information of the high-efficiency signaling field B on each 20M Hz by the scrambling code, and then performs decoding to perform CRC check. If the check is correct, Then, the information of the high-efficiency signaling field B of different 20M Hz is compared. The frequency bands of the same information of the high-efficiency signaling field B can be grouped into one group, and the transmission structure of the high-efficiency signaling field B is determined according to the grouping situation. If the transmitting end adopts the method of additionally transmitting the characteristic bits, the receiving end parses all the information or part of the information of the efficient signaling field B on each 20M Hz, and performs CRC check. If the test is correct, the comparison is performed on different 20M Hz frequency bands. The characteristic bits, the frequency bands with the same feature bits can be grouped into one group, and the transmission structure of the efficient signaling field B is determined according to the grouping situation. In another detection mode, the receiving end compares the information of the high-efficiency signaling field B transmitted on the different 20M Hz frequency band or the Hamming distance of the partial information of the high-efficiency signaling field B, and determines the transmission structure of the efficient signaling field B.

Optionally, the partial information of the efficient signaling field B may be a public domain of the efficient signaling field B.

In this application, one of [1, 2, 1, 2] and the following six transmission structures can be used: [1, 2, 1, 1], [1, 2, 2, 2], [2, 1, 2,1], [2,1,2,2], [2,1,1,2], [2,1,1,1]. In the access point indication table, that is, Table 1, the transmission structure 2 is changed to the above six transmission structures. One. At this time, when the transmitting end adopts a transmission structure such as [1, 2, 2, 2] or [1, 2, 1, 1], the length of the public domain of the efficient signaling field B is different in different 20M Hz frequency bands, and the high-efficiency signal Let the length of the public field of field B be indicated in the efficient signaling field A. When the implicit indication is used and the length of the common domain of the high-efficiency signaling field B is not indicated, the receiving end may perform decoding according to different possible lengths, and the decoding result is subjected to CRC check, and then decoding results of different 20 MHz frequency bands are performed. For comparison, the transmission structure of the efficient signaling field B is obtained. If only the public domain of the high-efficiency signaling field B is used for detection and the transmission structure is determined, signals for transmitting the same information in different 20M Hz bands are combined and decoded for the rest of the efficient signaling field B.

80M Hertz Embodiment 2: Some embodiments of the transmission structure when two bits are used for indication information

This embodiment uses four transmission structures [1, 2, 1, 2], [1, 2, 2, 1], [1, 2, 1, 1] and [1, 2, 2, 2] to transmit high-efficiency signals. Let the information of field B. As shown in FIG. 8, [1, 2, 1, 1] indicates that the information of the high-efficiency signaling field B transmitted in the first 20M Hz band, the third 20M Hz band, and the fourth 20M Hz band is the same, first Resource indication information and user scheduling information on the 20M Hz band are transmitted on the first 20M Hz band, and also transmitted on the third 20M Hz band and the fourth 20M Hz band. The resource indication information on the third 20M Hz band And user scheduling information is transmitted on the third 20M Hz band, and also transmitted in the first 20M Hz band and the fourth 20M Hz band. The fourth 20M Hz band on the resource indication information and user scheduling information is in the fourth. Transmissions in the 20M Hz band are also transmitted on the first 20M Hz band and the third 20M Hz band; the resource indication information and user scheduling information on the second 20M Hz band are only transmitted on the second 20M Hz band.

The access point determines that each 20M Hz band requires user scheduling information and its resource indication information. [1, 2, 1, 1] is recorded as transmission structure 1, [1, 2, 1, 2] is recorded as transmission structure 2, [1, 2, 2, 1] is recorded as transmission structure 3, [1, 2, 2, 2] is recorded as the transmission structure 4. Using one of the four transport structures using one of the transport efficient signaling fields B, the access point can select one of the four transport structures based on load balancing to reduce the total length of the efficient signaling field B.

Optionally, the access point may use two bit indication information to indicate that the transmission structure corresponding to the transmission structure of the efficient signaling field B of the receiving end is as follows.

指示信息Instructions	传输结构Transmission structure
第1值First value		传输结构1Transmission structure 1
第2值Second value	传输结构2Transmission structure 2
第3值Third value	传输结构3Transmission structure 3
第4值4th value	传输结构4Transmission structure 4

Table 2 shows the efficient signaling field B with 2 bits indicating information at 80 MHz.

As shown in Table 2, at this time, the first value, the second value, the third value, and the fourth value of the indication information may be selected one of 00, 01, 10, and 11, respectively, that is, the four values are mutually Different, satisfying the one-to-one correspondence, for example, when the first value is 00, the other values may not take 00.

Optionally, the indication information may be determined according to a third 20M Hz frequency band and a fourth 20M Hz frequency band corresponding to the selected transmission structure, for example, when [1, 2, 1, 2], the third MHz frequency band and The value corresponding to the fourth MHz band is 1, 2, and the indication information takes the second value.

The implicit indication method may also be adopted when the transmission structure is indicated by two bits. The method using the implicit indication method is similar to the scheme in the previous embodiment, and the method for analyzing the transmission structure at the receiving end is similar to that in the previous embodiment. It will not be described here.

80M Hertz Embodiment 3: When three bits are used to indicate the transmission structure of the efficient signaling field B, some embodiments of the transmission structure include the following:

This embodiment uses [1, 2, 1, 2], [1, 2, 1, 1], [1, 2, 2, 1], [1, 2, 2, 2], [2, 1, 2 , 1], [2,1,2,2], [2,1,1,2] and [2,1,1,1] eight transmission structures transmit information of the efficient signaling field B. Wherein, for example, the transmission structure is [2, 1, 2, 2] indicating resource indication information and user scheduling on the second MHz frequency band transmitted in the first MHz frequency band, the third MHz frequency band, and the fourth 20 MHz Hz frequency band. Information, resource indication information and user scheduling information on the first MHz band, the third MHz band, and the fourth MHz band on the second 20M Hz band.

The access point determines that each 20M Hz band requires user scheduling information and resource indication information, [1, 2, 1, 1] is recorded as transmission structure 1, [1, 2, 1, 2] is recorded as transmission structure 2, [1 , 2, 2, 1] is recorded as transmission structure 3, [1, 2, 2, 2] is recorded as transmission structure 4, [2, 1, 1, 1] is recorded as transmission structure 5, [2, 1, 1, 2] is recorded as transmission structure 6, [2, 1, 2, 1] is recorded as transmission structure 7, and [2, 1, 2, 2] is recorded as transmission Structure 8. One of the eight transport structures uses one of the eight transport structures to transmit efficient signaling field B information, and the access point can reduce the total length of the efficient signaling field B according to load balancing.

Optionally, the access point may use three bits of indication information to indicate the delivery structure of the receiver's efficient signaling field B selection, as shown in Table 3.

table 3

指示信息Instructions	传输结构Transmission structure
第一值First value		传输结构1Transmission structure 1
第二值Second value	传输结构2Transmission structure 2
第三值Third value	传输结构3Transmission structure 3
第四值Fourth value	传输结构4Transmission structure 4
第五值Fifth value	传输结构5Transmission structure 5
第六值Sixth value	传输结构6Transmission structure 6
第七值Seventh value	传输结构7Transmission structure 7
第八值Eighth value	传输结构8Transmission structure 8

Table 3 shows the efficient signaling field B with 3 bits indicating information at 80 MHz.

As shown in Table 3, the first value, the second value, the third value, the fourth value, the fifth value, the sixth value, the seventh value, and the eighth value of the indication information may be selected as 000, 001, 010, and 011, respectively. One of 100, 101, 110, and 111, that is, the eight values are different from each other, and the one-to-one correspondence is satisfied. For example, when the first value is 000, the other values may not be 000.

The implicit indication method may also be adopted when three bits are used to indicate the transmission structure, and the method using the implicit indication method is similar to the scheme in the previous embodiment, and the method for analyzing the transmission structure at the receiving end is similar to that in the previous embodiment. It will not be described here.

80M Hertz Embodiment 4: When four bits are used to indicate information, some embodiments of the transmission structure are described below:

This embodiment can transmit information of the efficient signaling field B using up to 14 transmission structures. The letters represented by each of the 20M Hz bands can be either 1 or 2, excluding [1,1,1,1] and [2,2,2,2], 24–2=14.

The access point selects the transmission structure of M kinds of efficient signaling fields B in all transmission structures to form a selection pool, where M≤14, 2 ^N-1 <M≤2 ^N . The access point determines that each 20M Hz band requires user scheduling information and resource indication information. A transmission efficient signaling field B information is used in the M transmission structure. At this point, the access point can reduce one of the M transmission structures by reducing the total length of the efficient signaling field B according to load balancing.

Optionally, the sending end may use N bit indication information to indicate a transmission structure selected by the receiving end of the high efficiency signaling field B, and the indication information may be stored in the high efficiency signaling field A.

指示信息Instructions	传输结构Transmission structure
第1值First value		传输结构1Transmission structure 1
第2值Second value	传输结构2Transmission structure 2
…...	…...
第M值M value	传输结构MTransmission structure M

Table 4 shows the efficient signaling field B with 3 bits indicating information at 80 MHz.

As shown in Table 4, at this time, the i-th value of the indication information, i=1, 2, . . . , M can respectively select the indication information in which N values are composed of 0 or 1.

The implicit indication method may also be adopted when the transmission structure is indicated by 4 bits, and the method using the implicit indication method is similar to the scheme in the previous embodiment, and the method for analyzing the transmission structure at the receiving end is similar to that in the previous embodiment. It will not be described here.

When using 160M Hz, the first threshold is 40M Hz

160M Hertz Embodiment 1: The transmission structure of the high-efficiency signaling field B is indicated by one bit. Some embodiments of the transmission structure are described below:

This embodiment uses the transmission structures [1, 2, 1, 2, 1, 2, 1, 2] and [1, 2, 2, 1, 1, 2, 2, 1] to transmit the efficient signaling field B. Information, transmission structure is [1, 2, 2, 1, 1, 2, 2, 1] format, as shown in Figure 9, representing the first 20M Hz band, the fourth 20M Hz band, Resource indication information and user scheduling information of the fifth 20M Hz frequency band, the eighth 20M Hz frequency band, and the first 20M Hz frequency band, the fourth 20M Hz frequency band, and the fifth Repeated transmissions in the 20M Hz band, the eighth 20M Hz band, resource indications in the second 20M Hz band, the third 20M Hz band, and the sixth 20M Hz band in the seventh 20M Hz band Information and user scheduling information combined and in the second 20M Hz band, the third 20M Hz band, the sixth 20M Hz band, and the seventh Repeated transmission on the 20M Hz band.

The access point determines that each 20M Hz band requires user scheduling information and resource indication information. The access point is recorded as transmission structure 1, or [1, 2] in [1, 2, 1, 2, 1, 2, 1, 2]. , 2, 1, 1, 2, 2, 1] is recorded as the transmission structure 2, and one of the two transmission structures is selected to transmit the information of the efficient signaling field B. The access point can reduce one of the two transmission structures by reducing the total length of the efficient signaling field B according to load balancing.

Optionally, the sending end may use one bit indication information to indicate the transmission structure selected by the receiving end of the high efficiency signaling field B, as shown in FIG. 5 below.

Table 5: High-efficiency signaling field B at 160 MHz indicates that the information is 1 bit.

For the method using the explicit indication or the implicit indication, which is the same as that mentioned in the previous embodiment, and the method for parsing the data frame, an embodiment of the transmission structure in which the bit efficient indication field B is indicated by 80 bits is used. It will not be described here.

As an alternative, if one or more multi-user multiple-input multiple-output (MU-MIMO) conditions occur in the 160 MHz band, according to existing standards The user scheduling information on the MU-MIMO can be dynamically allocated to the first two 20M Hz frequency bands of the MU-MIMO frequency band, and the number of users in the first 20M Hz frequency band is recorded as n1, in the second 20M The number of users on the Hertz band is recorded as n2, n1 ≥ 0, n2 ≥ 0, and n1 and n2 are integers. For example, when MU-MIMO occupies 40 MHz and serves 5 users, these 5 users can be dynamically allocated to the two 20M Hz frequency bands of 40 MHz, satisfying n1+n2=5. At this time, n1 can be regarded as the number of user scheduling information of the high-efficiency signaling field B on the first 20M Hz frequency band occupied by the MU-MIMO, and n2 can be regarded as the second frequency band occupied by the MU-MIMO. The number of user scheduling information for efficient signaling field B on the 20M Hz band. The access point can adjust n1 and n2, and select the efficient signaling field B transmission structure shown in Table 5 for load balancing. At this time, the access point allocates n1 and n2 user scheduling information, such transmission meets the selected efficiency. The transmission structure of the signaling field B. For example, as shown in FIG. 10, the scheduling information of two users STA1 and STA2 on the first 40 MHz is allocated to the first 20M Hz band and the second 20M Hz, respectively. Repeat the transmission in the frequency band with reference to the format [1, 2, 2, 1, 1, 2, 2, 1]. In particular, since the first 40 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 40 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 40 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In particular, when 80 MHz MU-MIMO occurs, the access point can divide the user scheduled by the MU-MIMO into two parts, n1 and n2, and assign to the first 20M Hz band of the 80MHz and the second 20M Hz. The frequency bands are transmitted separately, and the access point can dynamically adjust n1 and n2. Optionally, the access point can adjust n1 and n2, and select the efficient signaling field B transmission structure shown in Table 5 for load balancing. At this time, the n1 and n2 user scheduling information allocated by the access point transmit the transmission structure satisfying the selected efficient signaling field B. For example, as shown in FIG. 11, the scheduling new information of the three users STA1, STA2, and STA3 on the first 80 MHz is allocated to the first 20M Hz band and the second 20M Hz band, respectively, and refer to [1, 2 The format of 2,1,1,2,2,1] is repeatedly transmitted. In particular, since the first 80 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 80 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 80 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In this embodiment, the efficiency of two optional transmission structures [1, 2, 1, 2, 1, 2, 1, 2] and [1, 2, 2, 1, 1, 2, 2, 1] is adopted. Signaling field B transmission structure. Alternatively, the implementation may use [1, 2, 1, 2, 1, 2, 1, 2] and one of the following 10 transmission structures: [1, 2, 2, 1, 1, 1, 2 ,2],[1,2,2,1,1,2,2,1],[1,2,2,1,2,1,1,2],[1,2,2,1,2 ,1,2,1],[1,2,2,1,2,2,1,1],[1,2,1,2,1,1,2,2],[1,2,1 ,2,1,2,2,1],[1,2,1,2,2,1,1,2],[1,2,1,2,2,1,2,1],[1 , 2, 1, 2, 2, 2, 1, 1]. At this time, in the transmission side indication table, that is, Table 5, the transmission structure 2 is changed to one of the above 10 transmission structures.

160M Hertz Embodiment 2: The transmission structure of the high efficiency signaling field B is indicated by two bits. Some embodiments of the transmission structure are described below.

This embodiment uses [1,2,1,2,1,2,1,2], [1,2,2,1,1,2,2,1], [1,2,1,1,1 , 2,1,1], [1,2,2,2,1,2,2,2] four transmission structures transmit efficient signaling field B information. Wherein, the format of the transmission structure [1, 2, 1, 1, 1, 2, 1, 1] is as shown in FIG. 12, and [1, 2, 1, 1, 1, 2, 1, 1] indicates the said Resources for a 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, the fifth 20M Hz band, the seventh 20M Hz band, and the eighth 20M Hz band The indication information and the user scheduling information are combined and in the first 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, the fifth 20M Hz band, and the seventh 20M Hz a frequency band, the eighth 20M Hz frequency band is repeatedly transmitted, the second 20M Hz frequency band, the sixth 20M Hz frequency band resource indication information and user scheduling information are combined and in the second 20M Hz frequency band, Repeat transmission on six 20M Hz bands.

The access point determines that each 20M Hz band requires user scheduling information and its resource indication information. [1,2,1,1,1,2,1,1] is recorded as transmission structure 1, [1,2,1,2,1,2,1,2] is recorded as transmission structure 2, [1, 2 , 2, 1, 1, 2, 2, 1] is recorded as the transmission structure 3, and [1, 2, 2, 2, 1, 2, 2, 2] is recorded as the transmission structure 4. One of the four transmission structures transmits efficient signaling field B information, and the access point can select one of the four transmission structures according to the load balancing to reduce the total length of the efficient signaling field B.

Optionally, the transmitting end may use two bit indication information to indicate the transmission structure selected by the receiving end of the efficient signaling field B, as shown in FIG. 6 below.

Table 6 Efficient signaling field B at 160 MHz with 2 bits indicating information

As shown in Table 6, the first value, the second value, the third value, and the fourth value of the indication information may be selected one of 00, 01, 10, and 11, respectively, that is, the four values are different from each other. A one-to-one correspondence is satisfied. For example, when the first value is 00, other values may not take 00.

For the method using the explicit indication or the implicit indication, which is the same as that mentioned in the previous embodiment, and the parsing method for the data frame, it can be correspondingly referred to as 80M Hz to indicate efficient signaling by one bit. An embodiment of the transmission structure of the field B is not described herein.

As an alternative, if one or more MU-MIMO cases greater than 20 MHz are present in the 160 MHz band, according to existing standards, user scheduling information on the MU-MIMO can be dynamically allocated to the MU- In the first two 20M Hz bands of the MIMO band, the number of users in the first 20M Hz band is recorded as n1, and in the second 20M Hz band, the number of users is recorded as n2, n1 ≥ 0, n2 ≥ 0, Both n1 and n2 are integers. At this time, n1 can be regarded as the number of user scheduling information of the high-efficiency signaling field B on the first 20M Hz frequency band occupied by the MU-MIMO, and n2 can be regarded as the second frequency band occupied by the MU-MIMO. The number of user scheduling information for efficient signaling field B on the 20M Hz band. Optionally, the access point can adjust n1 and n2, and select the high-efficiency signaling field B transmission structure shown in Table 6 to perform load balancing. At this time, the access point allocates n1 and n2 user scheduling information, and the transmission meets the selected one. The transmission structure of the efficient signaling field B. For example, as shown in FIG. 10, scheduling information of two users STA1 and STA2 on the first 40 MHz are allocated to the first 20 MHz band and the second 20 MHz band, respectively, and refer to [1, 2, 2 The format of 1,1,2,2,1] is repeatedly transmitted. In particular, since the first 40 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 40 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 40 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In particular, when 80 MHz MU-MIMO occurs, optionally, the access point can divide the user scheduled by the MU-MIMO into two parts, n1 and n2, and assign to the first 20 MHz Hz band and the first of the 80 MHz. The two 20M Hz bands are transmitted separately, and the access point can dynamically adjust n1 and n2. Optionally, the access point can adjust n1 and n2, and select the efficient signaling field B transmission structure shown in Table 6 for load balancing. At this time, the n1 and n2 user scheduling information allocated by the access point transmit the transmission structure satisfying the selected efficient signaling field B. For example, as shown in FIG. 11, the scheduling new information of the three users STA1, STA2, and STA3 on the first 80 MHz is allocated to the first 20M Hz band and the second 20M Hz band, respectively, and refer to [1, 2 The format of 2,1,1,2,2,1] is repeatedly transmitted. In particular, since the first 80 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 80 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and Repeated transmission according to the transmission structure of the efficient signaling field B, As shown in Figure 11. Optionally, the 80 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In this embodiment, an efficient signaling field B transmission structure of four optional transmission structures is employed. Optionally, the implementation may employ four of the following 16 transmission structures: [1, 2, 1, 2, 1, 2, 1, 2], [1, 2, 2, 1, 1, 1, 2,2],[1,2,2,1,1,2,2,1],[1,2,2,1,2,1,1,2],[1,2,2,1, 2,1,2,1],[1,2,2,1,2,2,1,1],[1,2,1,2,1,1,2,2],[1,2, 1,2,1,2,2,1],[1,2,1,2,2,1,1,2],[1,2,1,2,2,1,2,1],[ 1,2,1,2,2,2,1,1],[1,2,2,1,1,2,2,1],[1,2,1,1,1,2,1, 1], [1,2,1,1,2,1,2,2],[1,2,2,2,1,2,2,2],[1,2,2,2,2, 1,1,1]. At this time, in the access point indication table 6, the transmission structure 1, the transmission structure 2, the transmission structure 3, and the transmission structure 4 are changed to the above-described four types of transmission structures.

Example 3 of the 160MHz case:

This embodiment transmits efficient signaling field B information using up to 64 transmission structures. In [1, 2, c, d, e, f, g, h], c, d, e, f, g, h can each take a value of 1 or 2, constituting 2 ⁶ = 64 options.

The access point selects M kinds of efficient signaling field B transmission structures in all transmission structures to form a selection pool, where M≤64, 2N-1<M≤2N. The access point determines that each 20M Hz band requires user scheduling information and its resource indication information. A transmission efficient signaling field B information is used in the M transmission structure. At this point, the access point may select one of the M transmission structures according to load balancing to reduce the total length of the efficient signaling field B or other factors.

Optionally, the sending end may use N bit indication information to indicate which transmission structure is selected by the receiving end efficient signaling field B, and the indication information may be stored in the HE-SIG-A, which may be recorded as an explicit indication method.

Table 7 Efficient signaling field B at 160 MHz indicates information with N bits

As shown in Table 7, at this time, the ith value of the indication information, i=1, 2, ..., M can respectively select the indication information composed of 0 or 1 N values, and the selected results are different.

In particular, if one or more MU-MIMO conditions greater than 20 MHz are present in the 160 MHz band, according to existing standards, user scheduling information on the MU-MIMO can be dynamically allocated to the MU-MIMO frequency band. In the first two 20M Hz bands, the number of users in the first 20M Hz band is recorded as n1, and in the second 20M Hz band, the number of users is recorded as n2, n1 ≥ 0, n2 ≥ 0, n1 and n2 are Integer. At this time, n1 can be regarded as the number of user scheduling information of the high-efficiency signaling field B on the first 20M Hz frequency band occupied by the MU-MIMO, and n2 can be regarded as the second frequency band occupied by the MU-MIMO. The number of user scheduling information for efficient signaling field B on the 20M Hz band. Optionally, the access point can adjust n1 and n2, and select the high-efficiency signaling field B transmission structure shown in Table 7 to perform load balancing. At this time, the access point allocates n1 and n2 user scheduling information, and the transmission meets the selected selection. The transmission structure of the efficient signaling field B. For example, as shown in FIG. 10, scheduling information of two users STA1 and STA2 on the first 40 MHz are allocated to the first 20 MHz band and the second 20 MHz band, respectively, and refer to [1, 2, 2 The format of 1,1,2,2,1] is repeatedly transmitted. In particular, since the first 40 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 40 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 40 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In particular, when 80 MHz MU-MIMO occurs, optionally, the access point can divide the user scheduled by the MU-MIMO into two parts, n1 and n2, and assign to the first 20 MHz Hz band and the first of the 80 MHz. The two 20M Hz bands are transmitted separately, and the access point can dynamically adjust n1 and n2. Optionally, the access point can adjust n1 and n2, and select the efficient signaling field B transmission structure shown in Table 7 for load balancing. At this time, the n1 and n2 user scheduling information allocated by the access point transmit the transmission structure satisfying the selected efficient signaling field B. For example, as shown in Figure 11, the first three on 80MHz The scheduling new information of users STA1, STA2 and STA3 are respectively allocated to the first 20M Hz band and the second 20M Hz band, and refer to the format of [1, 2, 2, 1, 1, 2, 2, 1]. Repeat the transfer. In particular, since the first 80 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 80 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 80 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

Embodiment 4 of the 160MHz case:

This embodiment uses a maximum of 128 transmission structures to transmit efficient signaling field B information. In [1,2,c,d,e,f,g,h], c, d, e, f, g, h can each take a value of 1 or 2, which constitutes 2 ⁶ = 64 options; [2, 1 c, d, e, f, g, h], c, d, e, f, g, h can each take a value of 1 or 2, constituting 2 ⁶ = 64 choices, a total of 128 choices.

The access point selects M efficient signaling field B transmission structures in all transmission structures to form a selection pool, where M ≤ 128, 2 ^N-1 <M ≤ 2 ^N . The access point determines that each 20M Hz band requires user scheduling information and its resource indication information. A transmission efficient signaling field B information is used in the M transmission structure. At this point, the access point may select one of the M transmission structures according to load balancing to reduce the total length of the efficient signaling field B or other factors.

Optionally, the sending end may use N bit indication information to indicate the selected transmission structure of the receiving end of the high efficiency signaling field B, and the indication information may be stored in the high efficiency signaling field A, which may be recorded as an explicit indication method.

In particular, when 80 MHz MU-MIMO occurs, optionally, the access point can divide the user scheduled by the MU-MIMO into two parts, n1 and n2, and assign to the first 20 MHz Hz band and the first of the 80 MHz. The two 20M Hz bands are transmitted separately, and the access point can dynamically adjust n1 and n2. Optionally, the access point can adjust n1 and n2, and select the efficient signaling field B transmission structure shown in Table 7 for load balancing. At this time, the n1 and n2 user scheduling information allocated by the access point transmit the transmission structure satisfying the selected efficient signaling field B. For example, as shown in FIG. 11, the scheduling new information of the three users STA1, STA2, and STA3 on the first 80 MHz is allocated to the first 20M Hz band and the second 20M Hz band, respectively, and refer to [1, 2 The format of 2,1,1,2,2,1] is repeatedly transmitted. In particular, since the first 80 MHz resource indication covers two resource indices of the 20 MHz band The information indicating that the 80 MHz resource indication information can be repeatedly transmitted on the first 20 MHz frequency band and the second 20 MHz frequency band is repeatedly transmitted according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 80 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

Example 5 of the 160MHz case:

This embodiment uses a maximum of 254 transmission structures to transmit efficient signaling field B information. [a, b, c, d, e, f, g, h] a, b, c, d, e, f, g, h can each take a value of 1 or 2, constituting 2 ⁸ = 256 choices, Exclude all 1 and all 2 options, leaving 254 options.

The access point selects the transmission structure of M kinds of efficient signaling fields B in all transmission structures to form a selection pool, where M≤254, 2 ^n-1 <M≤2 ⁿ . The access point determines that each 20M Hz band requires user scheduling information and its resource indication information. A transmission efficient signaling field B information is used in the M transmission structure. At this point, the access point may select one of the M transmission structures according to load balancing to reduce the total length of the efficient signaling field B or other factors.

Optionally, the sending end may use the N bit indication information to indicate the transmission structure selected by the receiving end of the high efficiency signaling field B, and the indication information may be stored in the high efficiency signaling field A, which may be recorded as an explicit indication method.

Table 8 Efficient signaling field B at 160 MHz with N bits indicating information

As shown in Table 8, at this time, the ith value of the indication information, i=1, 2, ..., M can respectively select the indication information composed of 0 or 1 N values, and the selected results are different.

In particular, if one or more bands greater than 20 MHz are present in the 160 MHz band In the MU-MIMO case, according to the existing standard, the user scheduling information on the MU-MIMO can be dynamically allocated to the first two 20M Hz frequency bands of the MU-MIMO frequency band, and the user in the first 20M Hz frequency band The number is recorded as n1, and the number of users in the second 20M Hz band is recorded as n2, n1 ≥ 0, n2 ≥ 0, and n1 and n2 are integers. At this time, n1 can be regarded as the number of user scheduling information of the high-efficiency signaling field B on the first 20M Hz frequency band occupied by the MU-MIMO, and n2 can be regarded as the second frequency band occupied by the MU-MIMO. The number of user scheduling information for efficient signaling field B on the 20M Hz band. Optionally, the access point can adjust n1 and n2, and select the high-efficiency signaling field B transmission structure shown in Table 8 to perform load balancing. At this time, the access point allocates n1 and n2 user scheduling information, and the transmission meets the selected selection. The transmission structure of the efficient signaling field B. For example, as shown in FIG. 10, scheduling information of two users STA1 and STA2 on the first 40 MHz are allocated to the first 20 MHz band and the second 20 MHz band, respectively, and refer to [1, 2, 2 The format of 1,1,2,2,1] is repeatedly transmitted. In particular, since the first 40 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 40 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 40 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In particular, when 80 MHz MU-MIMO occurs, optionally, the access point can divide the user scheduled by the MU-MIMO into two parts, n1 and n2, and assign to the first 20 MHz Hz band and the first of the 80 MHz. The two 20M Hz bands are transmitted separately, and the access point can dynamically adjust n1 and n2. Optionally, the access point can adjust n1 and n2, and select the efficient signaling field B transmission structure shown in Table 8 for load balancing. At this time, the n1 and n2 user scheduling information allocated by the access point transmit the transmission structure satisfying the selected efficient signaling field B. For example, as shown in FIG. 11, the scheduling new information of the three users STA1, STA2, and STA3 on the first 80 MHz is allocated to the first 20M Hz band and the second 20M Hz band, respectively, and refer to [1, 2 The format of 2,1,1,2,2,1] is repeatedly transmitted. In particular, since the first 80 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 80 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated according to the transmission structure of the efficient signaling field B, as shown in FIG. Optionally, the 80 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

Example 6 of 160MHz:

In this embodiment, four different high-efficiency signaling field B information are formed in the first 80 MHz, and each 20 MHz frequency band information in the second 80 MHz is respectively grouped and recorded as [1, 2, 3, 4, e, f, g, h], where e, f, g, h may take 1, 2, 3 or 4, respectively, or constitute 4 ⁴ = 256 options. For example, as shown in FIG. 13, [1, 2, 3, 4, 1, 2, 3, 4] represents resource allocation and user scheduling information of the first and fifth 20M Hz bands, and is in the first and fifth. Repeated transmission on the 20M Hz band, resource allocation and user scheduling information in the 2nd and 6th 20M Hz bands are combined and repeated transmission in the 2nd and 6th 20M Hz bands, and resource allocation in the 3rd and 7th 20M Hz bands User scheduling information is combined and repeated in the 3rd and 7th 20M Hz bands. The resource allocation and user scheduling information of the 4th and 8th 20M Hz bands are combined and repeated in the 4th and 8th 20M Hz bands.

The access point selects M efficient signaling field B transmission structures in all transmission structures to form a selection pool, where M ≤ 256, 2 ^N-1 <M ≤ 2 ^N . The access point determines that each 20M Hz band requires user scheduling information and its resource indication information. A transmission efficient signaling field B information is used in the M transmission structure. At this time, the access point can select one of the M transmission structures according to the load balancing to reduce the total length of the efficient signaling field B.

Table 9 Efficient signaling field B at 160 MHz with N bits indicating information

As shown in Table 9, at this time, the i-th value of the indication information, i=1, 2, ..., M, the value can respectively select the indication information composed of 0 or 1 N values, and the selected result is not the same.

In particular, if one or more MU-MIMO conditions greater than 20 MHz are present in the 160 MHz band, the user scheduling information on the MU-MIMO can be moved according to existing standards. The state is allocated to the first two 20M Hz bands of the MU-MIMO frequency band. The number of users in the first 20M Hz band is recorded as n1, and in the second 20M Hz band, the number of users is recorded as n2, n1 ≥ 0, n2 ≥ 0, and n1 and n2 are integers. At this time, n1 can be regarded as the number of user scheduling information of the high-efficiency signaling field B on the first 20M Hz frequency band occupied by the MU-MIMO, and n2 can be regarded as the second frequency band occupied by the MU-MIMO. The number of user scheduling information for efficient signaling field B on the 20M Hz band. Optionally, the access point can adjust n1, n2, n3, and n4, and select the high-efficiency signaling field B transmission structure shown in Table 9 to perform load balancing. At this time, the access points are allocated n1, n2, n3, and n4. The user schedules information to transmit a transmission structure that satisfies the selected efficient signaling field B. In particular, since the first 40 MHz resource indication information covers resource indication information of two 20M Hz frequency bands, the 40 MHz resource indication information can be repeatedly transmitted on the first 20M Hz frequency band and the second 20M Hz frequency band, and The transmission is repeated in accordance with the transmission structure of the efficient signaling field B. Optionally, the 40 MHz resource indication information may be transmitted on one 20 MHz band and not transmitted on another 20 MHz band.

In particular, when 80 MHz MU-MIMO occurs, optionally, the access point can divide the users scheduled by the MU-MIMO into four parts: n1, n2, n3, and n4, in the first 20M Hz band. The number of users is recorded as n1, the number of users is recorded as n2 in the second 20M Hz band, the number of users is recorded as n3 in the second 20M Hz band, and the number of users in the second 20M Hz band is recorded as n4, n1 ≥ 0, n2 ≥ 0, n3 ≥ 0, n4 ≥ 0, and n1, n2, n3, and n4 are integers. The access point dynamically adjusts n1, n2, n3, and n4. Optionally, the access point can adjust n1, n2, n3, and n4, and select the efficient signaling field B transmission structure shown in Table 9 for load balancing. At this time, the n1, n2, n3, and n4 user scheduling information allocated by the access point transmits the transmission structure satisfying the selected efficient signaling field B. In particular, since the first 80 MHz resource indication information covers resource indication information of four 20 MHz frequency bands, the 80 MHz resource indication information can be repeatedly transmitted on four 20 MHz frequency bands, and according to the transmission structure of the efficient signaling field B. Repeat transmission. Optionally, the 80 MHz resource indication information may be transmitted in a 20 MHz band and not transmitted in other 20 MHz bands.

When the access point adopts the explicit indication method, the receiving end parses the HE-SIG-A to obtain the indication information of the efficient signaling field B transmission structure. According to the indication information, the receiving end determines the transmission structure of the efficient signaling field B. According to the indicated efficient signaling field B transmission structure, the receiving end combines the efficient signaling field B of the corresponding channel for joint decoding, for example, if the indication is [1, 2, 3, 4, 1, 2, 3, 4] transmission structure The receiving end can jointly decode the high-efficiency signaling field B information transmitted on the first and fifth 20M Hz frequency bands to obtain the resource indication information and the user scheduling information of the first and fifth 20M Hz frequency bands, and the receiving end can The high-efficiency signaling field B information transmitted on the 2nd and 6th 20M Hz frequency bands is jointly decoded to obtain the resource indication information and the user scheduling information in the 2nd and 6th 20M Hz frequency bands, and the receiving end can put the 3rd and 7th. The high-efficiency signaling field B information transmitted on the 20M Hz frequency band is jointly decoded to obtain the resource indication information and the user scheduling information on the 3rd and 7th 20M Hz frequency bands, and the receiving end can put the 4th and 8th 20M Hz frequency bands on the receiving end. The transmitted high-efficiency signaling field B information is jointly decoded to obtain resource indication information and user scheduling information on the 4th and 8th 20M Hz frequency bands.

For the method using the implicit indication, which is the same as that mentioned in the previous embodiment, and the method for parsing the data frame, an embodiment of the transmission structure of the high-efficiency signaling field B using one bit at 80 MHz may be referred to. Repeat them. According to the transmission structure of the high-efficiency signaling field B, the receiving end combines the high-efficiency signaling field B of the corresponding channel for joint decoding, and the joint decoding mode is combined with the explicit indication method in this embodiment to obtain the high-efficiency signaling field B transmission structure. The decoding method is the same.

A method for transmitting a data frame is provided in the foregoing, and an access point is also provided corresponding to the present invention, which is specifically described below.

As shown in FIG. 14, an access point is used for a local area network of orthogonal frequency division multiple access, and the access point includes:

The generating unit 101 is configured to generate at least one data frame according to the data to be transmitted, where the data frame includes an efficient signaling field A and an efficient signaling field B, where the high-efficiency signaling field A is used to identify the high-efficiency signaling field B. Related information, the high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

The configuration unit 102 is configured to divide the transmission bandwidth into Y frequency bands in sequence when the transmission bandwidth X is greater than the first threshold, each frequency band has a respective high efficiency signaling field B, and the high efficiency signaling field B of each frequency band is in its own The frequency band is transmitted, and the applicable transmission structure is selected in a plurality of available high-efficiency signaling field B transmission structures, and the high-efficiency signaling field B of the Y frequency bands is carried in the data frame;

The sending unit 103 is configured to send the data frame including the transmission structure to the receiving end.

Optionally, the transmission bandwidth is 80 megahertz, and the first threshold is 40 megahertz. The configuration unit 102 is specifically configured to:

The 80M Hz is divided into four 20M Hz frequency bands in order, which is the first 20M Hz a frequency band, a second 20M Hz band, a third 20M Hz band, and a fourth 20M Hz band, wherein the first 20M Hz band transmits resource indication information and user allocation information with the second 20M Hz The resource indication information and the user allocation information transmitted by the efficient signaling field B of the frequency band are different.

Optionally, the transmission structure comprises any one of the following structures:

The foregoing "1, 2, 2, 1" "1, 2, 1, 2", the foregoing "1, 2, 2, 2", have been described in detail above, and will not be described herein.

Optionally, the transmission bandwidth is 160 megahertz, and the first threshold is 40 megahertz. The configuration unit 102 is specifically configured to:

The 160M Hz is divided into eight 20M Hz bands in order, which are the first 20M Hz band, the second 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, and the fifth 20M Hz band. The sixth 20M Hz band, the seventh 20M Hz band, and the eighth 20M Hz band, wherein the first 20M Hz band and the second 20M Hz band have different efficient signaling fields B.

The aforementioned "1, 2, 2, 1, 2, 2, 1", the aforementioned "1, 2, 1, 1, 1, 2, 1, 1",

The foregoing "1, 2, 2, 2, 1, 2, 2, 2", or the aforementioned "1, 2, 3, 4, 1, 2, 3, 4", details will not be described again.

Optionally, the access point further includes:

The first processing unit 104 is configured to implicitly indicate the data frame, so that the receiving end parses the data frame to obtain a transmission structure of the high-efficiency signaling field B.

Optionally, the access point further includes:

The second processing unit 105 is configured to perform scrambling processing on the high-efficiency signaling field B of the data frame, so as to improve the discrimination between the frequency bands in the high-efficiency signaling field.

The access point further includes:

The third processing unit 106 is configured to carry the indication information that identifies the transmission structure of the high-efficiency signaling field B in the high-efficiency signaling field A, so that the receiving end according to the indication information in the high-efficiency signaling field A The transmission structure of the efficient signaling field B is parsed.

It will be apparent to those skilled in the art that the above description is convenient and concise for the description. For the specific working process of the system, the device and the unit, reference may be made 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 system, apparatus, and method 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, and may be in an electrical, mechanical or other form.

Accordingly, another embodiment provides an acknowledgement frame transmission processing device (not shown) for use in a wireless local area network employing OFDMA technology, including a processing unit for generating or processing (transmitting or receiving) the disclosure for the foregoing embodiments Data frame. For the specific transmission method, refer to the methods described in the foregoing embodiments, and details are not described herein again. The processing unit may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or may implement or perform the embodiments of the present invention. Various methods, steps, and logic blocks are disclosed. A general purpose processor can be a microprocessor or any conventional processor or the like. 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. It is easy to understand that the processing device of the foregoing resource indication may be located at an access point when specifically transmitting the frame including the resource indication field, and may be located at the site when specifically receiving the frame including the resource indication field.

Figure 15 is a block diagram of an access point or site in accordance with another embodiment of the present invention. The access point or site of Figure 15 includes an interface 101, a processing unit 102, and a memory 103. Processing unit 102 controls the operation of access point 100. Memory 103 can include read only memory and random access memory and provides instructions and data to processing unit 102. A portion of the memory 103 may also include non-volatile line random access memory (NVRAM). The various components of access point 100 are coupled together by a bus system 109, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as the bus system 109 in the figure.

The method for transmitting the foregoing various frames disclosed in the foregoing embodiments of the present invention may be applied to a processing unit. 102, or implemented by processing unit 102. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processing unit 102 or an instruction in the form of software. The processing unit 102 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, which can be implemented or executed in an embodiment of the invention. Various methods, steps, and logic blocks of the disclosure. A general purpose processor can be a microprocessor or any conventional processor or the like. 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. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 103, and the processing unit 102 reads the information in the memory 103 and completes the steps of the above method in combination with its hardware.

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 purpose of the solution of the embodiment.

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.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Read Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, the above mentioned storage. The medium can be a read only memory, a magnetic disk or an optical disk or the like.

A method for transmitting a data frame and a related device provided by the present invention are described in detail above. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be a specific implementation manner and application range. Changes, in summary, the contents of this manual should not be construed as Limitations of the invention.

Claims

A method for transmitting a data frame, characterized by a local area network for orthogonal frequency division multiple access, the method comprising:

The access point generates at least one data frame according to the data to be transmitted, where the data frame includes an efficient signaling field A and an efficient signaling field B, where the high-efficiency signaling field A is used to identify related information of the high-efficiency signaling field B. The high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

When the transmission bandwidth X is greater than the first threshold, the access point divides the transmission bandwidth into Y frequency bands in sequence, each frequency band has a respective efficient signaling field B, and the efficient signaling field B of each frequency band is Transmitting on the respective frequency bands, selecting a suitable transmission structure in a plurality of available high-efficiency signaling field B transmission structures, and carrying the high-efficiency signaling field B of the Y frequency bands in the data frame;

The access point transmits a data frame including the transmission structure to a receiving end.
The method according to claim 1, wherein the transmission bandwidth is 80 megahertz, the first threshold is 40 megahertz, and the access point uses the transmission bandwidth according to the transmission bandwidth X when the transmission bandwidth X is greater than the first threshold. The order of dividing into Y frequency bands specifically includes:

The access point divides the 80M Hz into four 20M Hz frequency bands, which are respectively the first 20M Hz frequency band, the second 20M Hz frequency band, the third 20M Hz frequency band, and the fourth 20M Hz frequency band, wherein The resource indication information and the user allocation information transmitted by the first 20M Hz band are different from the resource indication information and the user allocation information transmitted by the high efficiency signaling field B of the second 20M Hz band.
The method according to claim 2, wherein said plurality of available efficient signaling field B transmission structures comprise at least one or more of the following structures:

1, 2, 2, 1 wherein the "1, 2, 2, 1" indicates resource indication information and user scheduling information on the first 20M Hz band and the fourth 20M Hz band Repetitive transmission on the first 20M Hz band and the fourth 20M Hz band, resource indication information and user scheduling information on the second 20M Hz band and the third 20M Hz band in the second Repeat transmission on the 20M Hz band and the third 20M Hz band;

1, 2, 1, 1, wherein the "1, 2, 1, 1" represents the first 20M Hz band, Resource indication information and user scheduling information on the third 20M Hz band and the fourth 20M Hz band in the first 20M Hz band, the third 20M Hz band, and the fourth 20M Repeat transmission on the Hertz frequency band, and resource indication information and user scheduling information on the second 20M Hz frequency band are transmitted on the second 20M Hz frequency band;

1, 2, 2, 2, wherein the "1, 2, 2, 2" indicates that the resource indication information and the user scheduling information on the first 20M Hz frequency band are transmitted on the first 20M Hz frequency band, Resource indication information and user scheduling information on the second 20M Hz band, the third 20M Hz band, and the fourth 20M Hz band in the second 20M Hz band, the third The transmission is repeated on the 20M Hz band and the fourth 20M Hz band, where 1 represents the first transmission structure of the efficient signaling field B, and 2 represents the second transmission structure of the efficient signaling field B.
The method according to claim 1, wherein the transmission bandwidth is 160 megahertz, the first threshold is 40 megahertz, and the access point uses the transmission bandwidth according to the transmission bandwidth X when the transmission bandwidth X is greater than the first threshold. The order of dividing into Y frequency bands specifically includes:

The access point divides 160 MHz into eight 20M Hz frequency bands, which are the first 20M Hz band, the second 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, and the fifth. 20M Hz band, a sixth 20M Hz band, a seventh 20M Hz band, and an eighth 20M Hz band, wherein the first 20M Hz band and the second 20M Hz band have efficient signaling fields B is not the same.
The method according to claim 4, wherein said plurality of available efficient signaling field B transmission structures comprise at least one or more of the following structures:

1, 2, 2, 1, 2, 2, 1, wherein the "1, 2, 2, 1, 2, 2, 1" represents the first 20M Hz band, the first Resource indication information and user scheduling information for four 20M Hz bands, the fifth 20M Hz band, the eighth 20M Hz band, and the first 20M Hz band, the fourth 20M Hz Repeated transmission in the frequency band, the fifth 20M Hz frequency band, the eighth 20M Hz frequency band, the second 20M Hz frequency band, the third 20M Hz frequency band, and the sixth 20M Hz frequency band seventh Resource indication information and user scheduling information of the 20M Hz band are combined and in the second 20M Hz band, the third Repeat transmission in the 20M Hz band, the sixth 20M Hz band, and the seventh 20M Hz band;

1, 2, 1, 1, 1, 2, 1, 1, wherein the "1, 2, 1, 1, 1, 2, 1, 1" represents the first 20M Hz band, the first Resource indication information and user scheduling information of three 20M Hz frequency bands, the fourth 20M Hz frequency band, the fifth 20M Hz frequency band, the seventh 20M Hz frequency band, and the eighth 20M Hz frequency band are combined The first 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, the fifth 20M Hz band, the seventh 20M Hz band, and the eighth 20M Hz Repeated transmission in the frequency band, the resource indication information of the second 20M Hz frequency band and the sixth 20M Hz frequency band and the user scheduling information are combined and repeatedly transmitted in the second 20M Hz frequency band and the sixth 20M Hz frequency band;

1, 2, 2, 2, 1, 2, 2, 2, wherein the "1, 2, 2, 2, 1, 2, 2, 2" represents the first 20M Hz band, the first Resource indication information and user scheduling information on five 20M Hz frequency bands are combined and repeated transmission in the first 20M Hz frequency band and the fifth 20M Hz frequency band, the second 20M Hz frequency band, the third The resource indication information and the user scheduling information of the 20M Hz band, the fourth 20M Hz band, the sixth 20M Hz band, the seventh 20M Hz band, the eighth 20M Hz band are combined and in the second Repeated transmission on the third 20M Hz band, the fourth 20M Hz band, the sixth 20M Hz band, the seventh 20M Hz band, and the eighth 20M Hz band;

1, 2, 3, 4, 1, 2, 3, 4, wherein the "1, 2, 3, 4, 1, 2, 3, 4" represents the first 20M Hz band, the first Resource indication information and user scheduling information on five 20M Hz bands are combined and repeated transmission in the first 20M Hz band, the fifth 20M Hz band, the second 20M Hz band, the sixth The resource allocation and user scheduling information of the 20M Hz band is combined and repeated transmission in the second 20M Hz band and the sixth 20M Hz band, and the resource indication of the third 20M Hz band and the seventh 20M Hz band Information and user scheduling information are combined and repeated transmission in the third 20M Hz band, the seventh 20M Hz band, resource indication information and user of the fourth 20M Hz band, the eighth 20M Hz band The scheduling information is combined and repeated transmission in the fourth 20M Hz frequency band and the eighth 20M Hz frequency band, where 1 represents a first transmission structure of the efficient signaling field B, and 2 represents an efficient signaling field B. Two transmission structures.
The method according to any one of claims 1-5, wherein the selecting a suitable transmission structure among the plurality of available efficient signaling field B transmission structures comprises:

The applicable transmission structure is selected in accordance with the principle of minimizing the length of the efficient signaling field B.
The method according to any one of claims 1-6, wherein before the access point sends the data frame including the transmission structure to the receiving end, the method further includes:

The access point performs scrambling processing on the high-efficiency signaling field B of the data frame, or the high-efficiency signaling field B includes a distinguishing bit to improve the discrimination between each frequency band in the high-efficiency signaling field. .
The method according to any one of claims 1-6, wherein before the access point sends the data frame including the transmission structure to the receiving end, the method includes:

The access point carries the indication information that identifies the transmission structure of the high-efficiency signaling field B in the high-efficiency signaling field A, so that the receiving end parses the indication according to the indication information in the high-efficiency signaling field A. The transmission structure of the efficient signaling field B.
A method for receiving a data frame, characterized by a local area network for orthogonal frequency division multiple access, the method comprising:

The station receives at least one data frame, the data frame includes an efficient signaling field A and an efficient signaling field B, wherein the high efficiency signaling field A is used to identify related information of the high efficiency signaling field B, the high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

The high-efficiency signaling field A includes information for explicitly indicating a transmission structure of the high-efficiency signaling field B, or implied in the high-efficiency signaling field B, including the indication of the high-efficiency signaling field B. Information about the transmission structure;

The efficient signaling field B is parsed according to the explicit or implicitly indicated transmission structure.
The method according to claim 9, wherein the information contained in the efficient signaling field B containing the transmission structure indicating the efficient signaling field B comprises:

The efficient signaling field B of the data frame is scrambled, or the efficient signaling field B Contains distinguishing bits.
A wireless communication device, characterized in that, for a local area network of orthogonal frequency division multiple access, the access point comprises:

And a generating unit, configured to generate at least one data frame according to the data to be transmitted, where the data frame includes an efficient signaling field A and an efficient signaling field B, where the high-efficiency signaling field A is used to identify the correlation of the high-efficiency signaling field B Information, the high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

The configuration unit is configured to divide the transmission bandwidth into Y frequency bands in sequence when the transmission bandwidth X is greater than the first threshold, each frequency band has a respective efficient signaling field B, and the efficient signaling field B of each frequency band is in a respective frequency band. Up-transmission, selecting a suitable transmission structure in a plurality of available high-efficiency signaling field B transmission structures, and carrying the high-efficiency signaling field B of the Y frequency bands on the data frame.
The wireless communication device according to claim 11, wherein the transmission bandwidth is 80 megahertz, and the first threshold is 40 megahertz, and the configuration unit is specifically configured to:

The 80M Hz is sequentially divided into four 20M Hz frequency bands, which are the first 20M Hz frequency band, the second 20M Hz frequency band, the third 20M Hz frequency band, and the fourth 20M Hz frequency band, wherein the first one The resource indication information and the user allocation information transmitted in the 20M Hz band are different from the resource indication information and the user allocation information transmitted by the efficient signaling field B of the second 20M Hz band.
The wireless communication apparatus according to claim 12, wherein said plurality of available efficient signaling field B transmission structures comprise at least one or more of the following structures:

1, 2, 2, 1 wherein the "1, 2, 2, 1" indicates resource indication information and user scheduling information on the first 20M Hz band and the fourth 20M Hz band Repetitive transmission on the first 20M Hz band and the fourth 20M Hz band, resource indication information and user scheduling information on the second 20M Hz band and the third 20M Hz band in the second Repeat transmission on the 20M Hz band and the third 20M Hz band;

1, 2, 1, 1, wherein the "1, 2, 1, 1" represents the first 20M Hz band, Resource indication information and user scheduling information on the third 20M Hz band and the fourth 20M Hz band in the first 20M Hz band, the third 20M Hz band, and the fourth 20M Repeat transmission on the Hertz frequency band, and resource indication information and user scheduling information on the second 20M Hz frequency band are transmitted on the second 20M Hz frequency band;

1, 2, 2, 2, wherein the "1, 2, 2, 2" indicates that the resource indication information and the user scheduling information on the first 20M Hz frequency band are transmitted on the first 20M Hz frequency band And the second 20M Hz frequency band, the third 20M Hz frequency band, and the fourth 20M Hz frequency band resource indication information and user scheduling information in the second 20M Hz frequency band, the third The transmission is repeated on the 20M Hz band and the fourth 20M Hz band, where 1 represents the first transmission structure of the efficient signaling field B, and 2 represents the second transmission structure of the efficient signaling field B.
The wireless communication device according to claim 11, wherein the transmission bandwidth is 160 megahertz, and the first threshold is 40 megahertz, and the configuration unit is specifically configured to:

The 160M Hz is divided into eight 20M Hz bands in order, which are the first 20M Hz band, the second 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, and the fifth 20M Hz band. The sixth 20M Hz band, the seventh 20M Hz band, and the eighth 20M Hz band, wherein the first 20M Hz band and the second 20M Hz band have different efficient signaling fields B.
The wireless communication apparatus according to claim 14, wherein said plurality of available efficient signaling field B transmission structures include at least one or more of the following structures:

1, 2, 2, 1, 2, 2, 1, wherein the "1, 2, 2, 1, 2, 2, 1" represents the first 20M Hz band, the first Resource indication information and user scheduling information for four 20M Hz bands, the fifth 20M Hz band, the eighth 20M Hz band, and the first 20M Hz band, the fourth 20M Hz Repeated transmission in the frequency band, the fifth 20M Hz frequency band, the eighth 20M Hz frequency band, the second 20M Hz frequency band, the third 20M Hz frequency band, and the sixth 20M Hz frequency band seventh The resource indication information of the 20M Hz band is combined with the user scheduling information and is repeatedly transmitted in the second 20M Hz band, the third 20M Hz band, the sixth 20M Hz band, and the seventh 20M Hz band;

1, 2, 1, 1, 1, 2, 1, 1, wherein the "1, 2, 1, 1, 1, 2, 1, 1" represents the first 20M Hz band, the first Resource indication information and user scheduling information of three 20M Hz frequency bands, the fourth 20M Hz frequency band, the fifth 20M Hz frequency band, the seventh 20M Hz frequency band, and the eighth 20M Hz frequency band are combined The first 20M Hz band, the third 20M Hz band, the fourth 20M Hz band, the fifth 20M Hz band, the seventh 20M Hz band, and the eighth 20M Hz Repeated transmission in the frequency band, the resource indication information of the second 20M Hz frequency band and the sixth 20M Hz frequency band and the user scheduling information are combined and repeatedly transmitted in the second 20M Hz frequency band and the sixth 20M Hz frequency band;

1, 2, 2, 2, 1, 2, 2, 2, wherein the "1, 2, 2, 2, 1, 2, 2, 2" represents the first 20M Hz band, the first Resource indication information and user scheduling information on five 20M Hz frequency bands are combined and repeated transmission in the first 20M Hz frequency band and the fifth 20M Hz frequency band, the second 20M Hz frequency band, the first The resource indication information and user scheduling information of the three 20M Hz frequency bands, the fourth 20M Hz frequency band, the sixth 20M Hz frequency band, the seventh 20M Hz frequency band, and the eighth 20M Hz frequency band are combined and are in the second Repeated transmission on the third 20M Hz frequency band, the fourth 20M Hz frequency band, the sixth 20M Hz frequency band, the seventh 20M Hz frequency band, and the eighth 20M Hz frequency band;

1, 2, 3, 4, 1, 2, 3, 4, wherein the "1, 2, 3, 4, 1, 2, 3, 4" represents the first 20M Hz band, the first Resource indication information and user scheduling information on five 20M Hz bands are combined and repeated transmission in the first 20M Hz band, the fifth 20M Hz band, the second 20M Hz band, the sixth The resource allocation and user scheduling information of the 20M Hz band is combined and repeated transmission in the second 20M Hz band and the sixth 20M Hz band, and the resource indication of the third 20M Hz band and the seventh 20M Hz band Information and user scheduling information are combined and repeated transmission in the third 20M Hz band, the seventh 20M Hz band, resource indication information and user of the fourth 20M Hz band, the eighth 20M Hz band The scheduling information is combined and repeated transmission in the fourth 20M Hz frequency band and the eighth 20M Hz frequency band, where 1 represents a first transmission structure of the efficient signaling field B, and 2 represents an efficient signaling field B. Two transmission structures.
The wireless communication device of claim 15, further comprising:

And a processing unit, configured to perform scrambling processing on the high-efficiency signaling field B of the data frame or add a distinguishing bit, so as to improve the discrimination between the frequency bands in the high-efficiency signaling field.
The wireless communication device according to any one of claims 11-16, wherein the configuration unit is specifically configured to:

The applicable transmission structure is selected in accordance with the principle of minimizing the length of the efficient signaling field B.
The wireless communication device according to any one of claims 11-16, wherein the access point further comprises:

a processing unit, configured to carry indication information that identifies a transmission structure of the high-efficiency signaling field B in the high-efficiency signaling field A, so that the receiving end parses the indication according to the indication information in the high-efficiency signaling field A The transmission structure of the efficient signaling field B.
An access point, comprising the wireless communication device of any of claims 11-18, and a transmitting unit for transmitting a data frame including the transmission structure to a receiving end.
A wireless communication device, characterized in that a local area network for orthogonal frequency division multiple access,

a receiving module, configured to receive at least one data frame, where the data frame includes an efficient signaling field A and an efficient signaling field B, where the high-efficiency signaling field A is used to identify related information of the high-efficiency signaling field B, The high efficiency signaling field B is used to transmit user scheduling information and resource indication information;

The high-efficiency signaling field A includes information for explicitly indicating a transmission structure of the high-efficiency signaling field B, or implied in the high-efficiency signaling field B, including the indication of the high-efficiency signaling field B. Information about the transmission structure;

And a parsing module, configured to parse the high-efficiency signaling field B according to the explicit or implicitly indicated transmission structure.
The parsing module is specifically configured to obtain, according to the descrambling process of the high-efficiency signaling field B, the transmission structure by using the distinguishing bit.
A station, comprising the wireless communication device of any of claims 20 or 21, and a communication interface.