WO2017166251A1

WO2017166251A1 - Data transmission method and relevant device

Info

Publication number: WO2017166251A1
Application number: PCT/CN2016/078218
Authority: WO
Inventors: 乔登宇; 林英沛; 丁志明; 杜振国
Original assignee: 华为技术有限公司
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-10-05

Abstract

Disclosed are a data transmission method and a relevant device. The method is applied to a sending station establishing a direct link and comprises: a receiving station receiving a transmission frame, the type of the transmission frame being a direct link transmission frame, an uplink transmission frame or a downlink transmission frame, the transmission frame comprising a physical header, and the physical header comprising a first field; when a value of the first field is a first pre-set value or a value within a first pre-set range, the receiving station determining that the transmission frame is a direct link transmission frame according to the value of the first field; and when the value of the first field is a value within a second pre-set range, the receiving station determining that the transmission frame is a non-direct link transmission frame according to the value of the first field, and determining a colour or a sub-colour of a basic service set according to the value of the first field. The first pre-set range does not coincide with the second pre-set range, the second pre-set range does not comprise the first pre-set value, and the non-direct link transmission frame comprises an uplink transmission frame and a downlink transmission frame. By implementing the embodiments of the present invention, the efficiency of recognizing a transmission frame type can be improved.

Description

Data transmission method and related equipment

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and related equipment.

Background technique

Wireless Fidelity (WiFi) is a wireless LAN technology based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard for personal computers (PCs), handheld devices. Terminals such as tablets and mobile phones are connected to each other wirelessly. The wireless local area network may include an access point (AP) and a user site (abbreviation: station (STA)). The STA can perform data transmission with the AP, but the data transmission between the STAs needs to be forwarded through the AP. Therefore, when data transmission between STAs is performed, one STA transmits data to the AP first, and then the AP transmits to another STA. It can be seen that in this process, channels are respectively used in two different time periods, so that the channel is reduced. Channel utilization.

In order to solve the above problem, the IEEE 802.11 standard proposes a direct link (Direct Link), that is, the two STAs can directly perform data transmission without going through the AP. However, when the two STAs perform data transmission, if there is a third STA that is closer to the two STAs, the third STA also listens to the transmission frames used by the two STAs to transmit data, and the transmission frame includes The physical head and the media access control (MAC) header, when the receiving STA parses the transmission frame, parses the physical header to the MAC header, and identifies whether the transmission frame is a direct transmission transmission frame. It is included in the MAC header, so that it is necessary to parse the MAC header before determining whether the transmission frame is a direct transmission transmission frame, so that the recognition efficiency of the direct transmission transmission frame is reduced.

Summary of the invention

The embodiment of the invention discloses a data transmission method and related device, which are used for improving the recognition efficiency of a direct connection transmission frame.

The first aspect discloses a data transmission method, which is applied to a transmitting station that has established a direct link, and the transmitting station generates a transmission frame including a physical header and sends the transmission frame, and the type of the transmission frame may be a direct transmission frame or an uplink transmission frame. Or a downlink transmission frame, the physical header may include a first field; when the value of the first field is When the first preset value or the value in the first preset range, the value of the first field may indicate that the transmission frame is a direct connection transmission frame; when the value of the first field is a value in the second preset range, the first The value of the field may indicate a color or a sub-color of the basic service set, and the value of the first field indicates that the transmission frame is a non-direct transmission frame; wherein the first preset range has no overlapping portion with the second preset range, and the A preset value does not belong to the second preset range, and collision may be avoided; wherein the indirect transmission frame may include an uplink transmission frame and a downlink transmission frame. The direct transmission frame is a transmission frame in which the link between the source site and the destination site is a direct link.

In an embodiment, the physical header may further include an uplink and downlink indication field. When the value of the uplink and downlink indication field is a second preset value, the second preset value may indicate that the transmission frame is an uplink transmission frame, and the value of the first field. The color or sub-color of the basic service set may be indicated; when the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value within the second preset range, the value of the first field may indicate the transmission The frame is a downlink transmission frame, and may indicate a color or a sub-color of the basic service set; when the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a first preset value or a first preset range The value of the first field may indicate that the transmission frame is a direct transmission transmission frame. Therefore, the transmission frame can be directly determined according to the information in the physical header as a direct transmission frame, an uplink transmission frame, or a downlink transmission frame, which can improve the recognition efficiency of the transmission frame type.

In an embodiment, when the value of the first field is a value in the first preset range, the value of the first field may further indicate an identifier of the direct link where the sending station is located, that is, the source site of the transmission frame may be indicated. The identity of the direct link between the destination sites, and the source site is the sender site. Therefore, the value of the first field can identify which direct link is the direct link transmitting the transmission frame.

In an embodiment, the physical header may further include a field set, where the field set may include at least one of a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication field, when the first field When the value is the first preset value, the field set may indicate the identifier of the direct link where the sending station is located, that is, the identifier of the direct link between the source site and the destination site of the transmission frame, and the source site is the sending site. Therefore, the value of the first field can identify which direct link is the direct link transmitting the transmission frame.

In one embodiment, the first field may be a basic service set color field or a basic service set sub-color field in a high efficiency signaling domain.

In an embodiment, when the value of the first field is the first preset value, the bit of the first field may be all 1.

A second aspect discloses a transmitting station, the transmitting station comprising means for performing the method provided by the first aspect or any of the possible implementations of the first aspect.

A third aspect discloses a transmitting site that includes a processor, a memory, and a transmitter. The memory is used to store a set of program codes, the processor is used to execute program code stored in the memory, and the transmitter is configured to communicate with the receiving station under the control of the processor. When the processor executes the program code stored in the memory, the method disclosed in the first aspect of the embodiment of the present invention or any of the possible implementations of the first aspect may be performed according to the program code stored in the memory.

A fourth aspect discloses a readable storage medium storing program code for transmitting a method for performing the method disclosed in the first aspect of the embodiments of the present invention or any of the possible implementations of the first aspect.

The fifth aspect discloses a data transmission method, where a receiving station receives a transmission frame including a first field, and when the value of the first field is a first preset value or a value within a first preset range, the first field may be The value determines that the transmission frame is a direct connection transmission frame; when the value of the first field is a value in the second preset range, the transmission frame may be determined to be a non-directly connected transmission frame according to the value of the first field, and may be according to the first field. The value determines the color or sub-color of the basic service set. The type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame. The first preset range has no overlapping portion with the second preset range, and the first preset value does not belong to the second preset range. Conflicts can be avoided. The first field belongs to a physical header, and the indirectly connected transmission frame may include an uplink transmission frame and a downlink transmission frame.

In an embodiment, the physical header may further include an uplink and downlink indication field; when the value of the uplink and downlink indication field is a second preset value, the receiving station may determine, according to the second preset value, that the transmission frame is an uplink transmission frame, and may Determining a color or a sub-color of the basic service set according to the value of the first field; when the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value within the second preset range, the receiving station may Determining, according to the value of the first field, the transmission frame is a downlink transmission frame, and determining a color or a sub-color of the basic service set according to the value of the first field; when the value of the uplink and downlink indication field is a third preset value, and the first field When the value is the first preset value or the value in the first preset range, the receiving station may determine, according to the value of the first field, that the transmission frame is a direct transmission frame. The receiving station may determine, according to the third preset value, that the transmission frame is a downlink transmission frame or a direct connection transmission frame, and further, determining, by using a value of the first field, whether the transmission frame is a downlink transmission frame or a direct connection transmission frame. Therefore, the transmission frame can be directly determined according to the information in the physical header as a direct transmission frame, an uplink transmission frame, or a downlink transmission frame, which can improve the transmission frame type. Identify efficiency.

In an embodiment, when the value of the first field is a value within the first preset range, the value of the first field may not only indicate that the transmission frame is a direct transmission frame, but may also indicate the source site and destination of the transmission frame. The identifier of the direct link between the sites. Therefore, when the identifier of the direct link indicated by the value of the first field is the identifier of the direct link in which the receiving station is located, indicating that the receiving station is the destination station of the transmission frame, when the value of the first field indicates direct connection When the identifier of the link is not the identifier of the directly connected link where the receiving station is located, it indicates that the receiving station is not the destination station of the transmission frame, and the transmission frame will be discarded. Therefore, when the receiving site is not the destination site of the transmission frame, unnecessary processing steps in the receiving site can be reduced.

In an embodiment, the physical header may further include a field set, where the field set may include at least one of a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication field, when the first field When the value is the first preset value, the field set may indicate the identifier of the direct link between the source site and the destination site of the transmission frame, and the identifier of the direct link indicated by the value of the field set is the direct location of the receiving site. When the identifier of the link is connected, it indicates that the receiving station is the destination station of the transmission frame. When the identifier of the direct link indicated by the value of the field set is not the identifier of the direct link of the receiving station, it indicates that the receiving station is not the transmission frame. The destination site will drop the transmission frame. Therefore, when the receiving site is not the destination site of the transmission frame, unnecessary processing steps in the receiving site can be reduced.

A sixth aspect discloses a receiving site, the receiving site comprising means for performing the method provided by the fifth aspect or any of the possible implementations of the fifth aspect.

A seventh aspect discloses a receiving station that includes a processor, a memory, and a receiver. The memory is used to store a set of program codes, the processor is used to execute program code stored in the memory, and the receiver is configured to communicate with the transmitting station under the control of the processor. When the processor executes the program code stored in the memory, the method disclosed in any of the possible implementations of the fifth aspect or the fifth aspect of the embodiments of the present invention may be performed according to the program code stored in the memory.

An eighth aspect discloses a readable storage medium storing a method disclosed by a receiving station for performing any of the possible implementations of the fifth aspect or the fifth aspect of the embodiments of the present invention. code.

A ninth aspect discloses a data transmission method, where the method is applied to a transmitting station that has established a direct link, and the method includes: the sending station generates a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink. Transmitting a frame, the transmission frame includes a physical header, the physical header includes a high efficiency signaling domain, and the high efficiency signaling domain includes a first high efficiency signaling subfield and a second high efficiency signaling subdomain, The first high efficiency signaling subfield adopts a first modulation mode, and the second high efficiency signaling subdomain adopts a second modulation mode;

When the first modulation mode is different from the second modulation mode, the transmission frame is a direct transmission frame, and when the first modulation mode is the same as the second modulation mode, the transmission frame is non- Directly connecting frames;

The transmitting station transmits the transmission frame.

In an embodiment, the physical header further includes an uplink and downlink indication field. When the value of the uplink and downlink indication field is a first preset value, the first preset value is used to indicate that the transmission frame is an uplink. Transmitting a frame, when the value of the uplink and downlink indication field is a second preset value, and the first modulation mode is different from the second modulation mode, the transmission frame is a direct connection transmission frame, when the upper and lower The value of the row indication field is the second preset value, and when the first modulation mode is the same as the second modulation mode, the transmission frame is a downlink transmission frame. Therefore, the transmission frame can be directly determined according to the information in the physical header as a direct transmission frame, an uplink transmission frame, or a downlink transmission frame, which can improve the recognition efficiency of the transmission frame type.

In an embodiment, the first modulation mode and/or the second modulation mode may be Binary Phase Shift Keying (BPSK) or Quadrature Binary Phase Shift Keying (Quadrature Binary Phase Shift Keying) , QBPSK).

A tenth aspect discloses a transmitting station, the transmitting station comprising means for performing the method provided by any of the possible implementations of the ninth aspect or the ninth aspect.

The eleventh aspect discloses a transmitting station that includes a processor, a memory, and a transmitter. The memory is used to store a set of program codes, the processor is used to execute program code stored in the memory, and the transmitter is configured to communicate with the receiving station under the control of the processor. When the processor executes the program code stored in the memory, the method disclosed in any of the possible implementations of the ninth aspect or the ninth aspect of the embodiment of the present invention may be performed according to the program code stored in the memory.

A twelfth aspect discloses a readable storage medium storing a method disclosed by a transmitting station for performing any of the possible implementations of the ninth aspect or the ninth aspect of the embodiments of the present invention Program code.

A thirteenth aspect discloses a data transmission method, including:

Receiving, by the receiving station, a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame includes a physical header, the physical header includes a high efficiency signaling domain, and the high efficiency signal The command domain includes a first high efficiency signaling subfield and a second high efficiency signaling subdomain, the first high efficiency signaling subdomain adopts a first modulation mode, and the second high efficiency signaling subdomain adopts a second Modulation;

When the first modulation mode is different from the second modulation mode, the receiving station determines that the transmission frame is a direct connection transmission frame;

When the first modulation mode is the same as the second modulation mode, the receiving station determines that the transmission frame is a non-directly connected transmission frame.

In an embodiment, the physical header further includes an uplink and downlink indication field;

When the first modulation mode is different from the second modulation mode, the receiving station determines that the transmission frame is a direct connection transmission frame, including:

When the value of the uplink and downlink indication field is a second preset value, and the first modulation mode is different from the second modulation mode, the receiving station determines that the transmission frame is a direct connection transmission frame;

When the first modulation mode is the same as the second modulation mode, the receiving station determines that the transmission frame is a non-directly connected transmission frame, and includes:

When the value of the uplink and downlink indication field is a first preset value, the receiving station determines that the transmission frame is an uplink transmission frame;

When the value of the uplink and downlink indication field is the second preset value, and the first modulation mode is the same as the second modulation mode, the receiving station determines that the transmission frame is a downlink transmission frame.

A fourteenth aspect discloses a receiving station, the receiving station comprising means for performing the method provided by the thirteenth aspect or any of the possible implementations of the thirteenth aspect.

A fifteenth aspect discloses a receiving station, the receiving station comprising a processor, a memory and a receiver. The memory is used to store a set of program codes, the processor is used to execute program code stored in the memory, and the receiver is configured to communicate with the transmitting station under the control of the processor. When the processor executes the program code stored in the memory, the thirteenth aspect of the embodiment of the present invention may be executed according to the program code stored in the memory or Any of the possible implementations of the method of the thirteenth aspect.

A sixteenth aspect discloses a readable storage medium storing a program for receiving a method for performing a method disclosed in any one of the thirteenth aspect or the thirteenth aspect of the embodiment of the present invention Code.

In the embodiment of the present invention, after receiving the transmission frame, the STA may determine whether the transmission frame is a direct transmission transmission frame by using the value of the first field in the physical header, and does not need to parse the information in the MAC header, thereby improving the identification direct connection. The efficiency of transmitting frames.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. One of ordinary skill in the art can also obtain other drawings based on these drawings without paying for inventive labor.

1a is a schematic diagram of a data transmission network architecture disclosed in an embodiment of the present invention;

FIG. 1b is a schematic diagram of data transmission disclosed in an embodiment of the present invention.

2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

3 is a schematic flowchart of another data transmission method according to an embodiment of the present invention;

4 is a schematic structural diagram of a transmitting station according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another sending station according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a receiving station according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another receiving station according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of still another transmitting station according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of still another transmitting station according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of still another receiving station according to an embodiment of the present invention; FIG.

11 is a schematic structural diagram of still another receiving station according to an embodiment of the present invention;

FIG. 12a is a schematic diagram of a BSS color field or a BBS sub-color field in a high efficiency signaling domain, where the first field is disclosed in the embodiment of the present invention;

12b is a BSS color field or a BBS sub-color field in a high-efficiency signaling domain, and an Nsts indication field, an STBC indication field, a TxBF indication field, and a DCM index are disclosed in the embodiment of the present invention. The display field is a schematic diagram of a high efficiency signaling domain.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 are within the scope of the present invention.

The embodiment of the invention discloses a data transmission method and related device, which are used for improving the recognition efficiency of a direct connection transmission frame type. The details are described below separately.

For a better understanding of a data transmission method and related device disclosed in the embodiments of the present invention, the network architecture used in the embodiment of the present invention is described below. Referring to FIG. 1a, FIG. 1a is a schematic diagram of a data transmission network architecture disclosed in an embodiment of the present invention. As shown in FIG. 1a, the data transmission network architecture may include STA1-STA6 and an AP, and STA1 and STA2 perform data transmission through the AP, and the link between STA1 and STA2 is an indirect link, between STA3 and STA4, and STA5 and The STA6 directly performs data transmission, that is, the link between STA3 and STA4 and the link between STA5 and STA6 is a direct link. Direct link establishment methods include Tunneled Direct Link Setup (TDLS) and Direct Link Setup (DLS). Referring to FIG. 1b, FIG. 1b is a schematic diagram of data transmission disclosed in an embodiment of the present invention. As shown in FIG. 1b, when STA3 and STA4 are respectively connected to each other and the direct link is not established, STA3 transmits data to STA4. When a direct link is established between STA3 and STA4, STA3 The transmission frame for transmitting data to STA4 is a direct connection transmission frame. When a direct link is not established between STA3 and STA4, the transmission frame in which STA3 sends data to the AP and the AP to STA4 is a non-direct transmission frame, and the non-directly connected transmission frame. It may include an uplink transmission frame and a downlink transmission frame. In the schematic diagram shown in FIG. 1(a), when STA3 performs data transmission to STA4, STA2 may receive a transmission frame sent by STA3 to STA4 because STA2 is closer to STA4. Therefore, STA2 needs to identify that the transmission frame is Not a direct transmission frame.

Based on the data transmission network architecture shown in FIG. 1 , please refer to FIG. 2 , which is a schematic flowchart of a data transmission method according to an embodiment of the present invention. Wherein, the embodiment of the present invention is to generate a transmission frame. Described as the site and the point at which the station transmitting the frame is received, the station that generated the transmission frame is the station that has established the direct link. As shown in FIG. 2, the data transmission method may include the following steps.

201. The transmitting station generates a transmission frame including the first field.

In this embodiment, when the transmitting station needs to transmit data to other stations, the transmitting station generates a transmission frame for transmitting data, and the transmission frame may be a direct transmission frame, an uplink transmission frame, or a downlink transmission frame. The transmission frame may include a physical header, and the physical header may include a first field. The first field may be a Basic Service Set (BSS) color field or a BBS subcolor field in a high efficiency signaling domain. The BSS consists of an AP and its associated STAs. Since different BSSs will be marked with different colors, according to the BSS Color field, the STA can recognize whether the received transmission frame is from the BSS where the STA is located. In addition, within one BSS, the BSS SubColor field is used to identify different packets within the same BSS. When the value of the first field is a value of the first preset value or the first preset range, indicating that the transmission frame is a direct transmission frame; when the value of the first field is a value within the second preset range, indicating The transmission frame is a non-directly connected transmission frame, and the value of the first field may indicate the color of the basic service set color field or the sub-color of the basic service set sub-color field. In order to avoid conflicts, the first preset range and the second preset range must have no intersection, and the first preset value does not belong to the second preset range. The transmission frame may further include a MAC header, and the physical header is in front of the MAC header in the transmission frame. The non-directly connected transmission frame may include an uplink transmission frame and a downlink transmission frame.

In an embodiment, when the value of the first field is a value in the first preset range, the value of the first field may not only indicate that the transmission frame is a direct transmission frame, but may also indicate a direct link where the transmitting station is located. The identifier of the direct link between the source site and the destination site indicating the transmission frame, and the source site is the sending site. The identity of the direct link used to transmit the transport frame can be identified. The identifier may be pre-assigned to all sites such that the value of the first field includes the identity of the source site or the identity of the destination site to indicate the identity of the direct link to which the transmitting site transmits the transport frame. The link between the sites may be pre-identified. For example, the link identifier between STA1 and STA2 is 1. The link identifier between STA3 and STA4 is 2. The value of the first field may be included between the source site and the destination site. The identity of the link to indicate the identity of the direct link to which the transmitting station transmits the transport frame.

In an embodiment, the physical header may further include a field set, and the field set may include a Number of Space-time streams (Nsts) indication field and a space-time coding (Space-time Block). Coding, STBC) at least one of a indication field, a beamforming (TxBF) indication field, and a dual carrier modulation (DCM) indication field, when the value of the first field is a first preset value, that is, When the transmission frame is a direct transmission frame, the field set may indicate the identity of the direct link where the transmitting station is located, that is, the identifier of the direct link between the source site and the destination site indicating the transmission frame, and the source site is the transmitting site. The identity of the direct link used to transmit the transport frame can be identified. Referring to FIG. 12a, FIG. 12a is a schematic diagram of a first field in the embodiment of the present invention, which is a BSS color field or a BBS sub-color field in a high-efficiency signaling domain. Referring to FIG. 12b, FIG. 12b is a disclosure of an embodiment of the present invention. One field is a BSS color field or a BBS sub-color field in a high efficiency signaling domain, and the Nsts indication field, the STBC indication field, the TxBF indication field, and the DCM indication field belong to a schematic diagram of a high efficiency signaling domain.

In an embodiment, when the value of the first field is the first preset value, the bit of the first field may be all 1s, and may be all 0s, or may be partially 0. .

The indirect transmission frame can be generally divided into an uplink transmission frame (a STA-to-AP frame) and a downlink transmission frame (a AP-to-STA frame), and an existing IEEE802.11 signaling domain defines a 1-bit length uplink. / downlink frame indication field, used to indicate that the transmission frame is an uplink transmission frame, or a downlink transmission frame/direct connection transmission frame. When the transmission frame is an uplink transmission frame, the value of the indication field is set to 1; when the transmission frame is downlink When transmitting a frame or directly connecting a transmission frame, the indication field is set to 0. It can be seen that since the same 0 value is shared to indicate that the transmission frame is a direct transmission frame or a downlink transmission frame, the receiving station cannot receive the transmission frame after receiving the transmission frame. The indication field identifies whether the transmission frame is a downlink transmission frame or a direct transmission transmission frame. In the embodiment of the present invention, the uplink and downlink indication field of the transmission frame (which may be an existing uplink/downlink frame indication field) and the value of the first field may be used to identify whether the transmission frame is a direct transmission frame or a downlink transmission frame, and the solution is solved. The above question. Therefore, in the embodiment of the present invention, the physical header may further include an uplink and downlink indication field, so as to determine, in combination with the value of the first field, that the transmission frame is a direct transmission frame or a downlink transmission frame: when the value of the uplink and downlink indication field is the first When the value is two, the value of the uplink and downlink indication field may indicate that the transmission frame is an uplink transmission frame; when the value of the uplink and downlink indication field is a third preset value, and the value of the first field is When the first preset value or the value in the first preset range, the value of the uplink and downlink indication field may indicate that the transmission frame is a direct transmission frame or a downlink transmission frame, and the value of the first field may indicate that the transmission frame is a direct transmission transmission frame. Therefore, the transmission frame can be indicated as a direct transmission transmission frame by the value of the uplink and downlink indication field and the value of the first field. When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value within the second preset range, the uplink and downlink pointers The value of the segment may indicate that the transmission frame is a direct transmission frame or a downlink transmission frame, and the value of the first field may indicate that the transmission frame is a downlink transmission frame, so that the transmission frame may be indicated by the value of the uplink and downlink indication field and the value of the first field. Downlink transmission frame. Therefore, the transmission frame can be directly determined according to the information in the physical header as a direct transmission frame, an uplink transmission frame, or a downlink transmission frame, which can improve the recognition efficiency of the transmission frame type. The second preset value is different from the third preset value.

202. The sending station sends a transmission frame.

203. The receiving station receives the transmission frame.

204. When the value of the first field is the first preset value or the value in the first preset range, the receiving station determines, according to the value of the first field, that the transmission frame is a direct transmission frame, when the value of the first field is When the value is within the preset range, the receiving station determines that the transmission frame is a non-directly connected transmission frame according to the value of the first field, and determines the color or sub-color of the basic service set according to the value of the first field.

In this embodiment, after receiving the transmission frame, the receiving station first parses the physical header of the transmission frame, and when the value of the first field in the physical header is the first preset value or the value in the first preset range, the receiving The station may determine that the transmission frame is a direct transmission frame according to the value of the first field, and when the link where the receiving station is located is a non-directly connected link, indicating that the transmission frame is not a transmission frame sent to the receiving station, that is, the receiving station is not a transmission frame. The destination station will discard the transmission frame and does not need to continue to parse the transmission frame, which can improve the processing efficiency of the transmission frame. When the link where the receiving station is located has a direct link, it indicates that the transmission frame may be the transmission frame sent to the receiving station. That is, the receiving station may be the destination station of the transmission frame, and the transmission frame may continue to be parsed to further determine whether the transmission frame is a transmission frame sent to the receiving station. When the value of the first field is a value in the second preset range, the receiving station may determine that the transmission frame is a non-directly connected transmission frame according to the value of the first field, and when the link where the receiving station is located is a direct link, It indicates that the transmission frame is not the transmission frame sent to the receiving station, that is, the receiving station is not the destination station of the transmission frame, and the transmission frame will be discarded. It is not necessary to continue to parse the transmission frame, which can improve the processing efficiency of the transmission frame; When the link is directly connected, it indicates that the transmission frame may be a transmission frame sent to the receiving station, that is, the receiving station may be the destination station of the transmission frame, and may continue to parse the transmission frame to further determine whether the transmission frame is a transmission frame sent to the receiving station. The first field may be a BSS color field or a BBS sub-color field in the high-efficiency signaling domain, when the value of the first field is a value within the second preset range, that is, when the receiving station determines that the transmission frame is a non-direct transmission At the time of the frame, the receiving station can also determine the color or sub-color of the basic service set based on the value of the first field. The first preset range and the second preset range must have no intersection, and the first preset value does not belong to The second preset range can avoid conflicts. Since the number of bits of the high-efficiency signaling domain is very limited, but the required indication information is more, the indication field for indicating that the transmission frame is a direct transmission transmission frame cannot be provided. Therefore, the embodiment of the present invention proposes other indication information. A field is multiplexed to indicate that the transmission frame type is a direct transmission frame. Although the high-efficiency signaling domain includes a lot of indication information, it is reasonable to indicate that the transmission frame is a direct-transmission transmission indication information and the same field is multiplexed with the BSS Color or BSS SubColor indication information. Because the group of directly connected link sites can be regarded as a special BSS, it can also be used as a special grouping within the BSS. Therefore, the embodiment of the present invention proposes to multiplex the BSS Color or BSS SubColor field, that is, when the BSS Color or BSS SubColor field is used to take one or more preset values or a value within a preset range, the value of the field is used to indicate The transmission frame is a direct transmission frame, and the value of this field outside of these cases is still used to indicate the function of the field itself indicating BSS Color or BSS SubColor.

In an embodiment, when the value of the first field is a value in the first preset range, that is, when the receiving station determines that the transmission frame is a direct transmission frame, if the link where the receiving station is located has a direct link, the receiving The station may further determine, by using the value of the first field, whether the receiving station is the destination station of the transmission frame, that is, comparing the identifier of the direct link identified by the value of the first field with the identifier of the directly connected link where the receiving station is located, when When the identifier of the direct link that is located at the receiving station matches the identifier of the direct link identified by the value of the first field, indicating that the receiving station is the destination station of the transmission frame, the transmission frame will continue to be parsed. When there is no identifier in the identifier of the directly connected link that matches the identifier of the direct link identified by the value of the first field, it indicates that the receiving station is not the destination station of the transmission frame, and the transmission frame will be discarded.

In an embodiment, the physical header may further include a field set, where the field set may include at least one of an Nsts indication field, an STBC indication field, a TxBF indication field, and a DCM indication field, where the value of the first field is a first preset value. When the receiving station determines that the transmission frame is a direct transmission frame, if there is a direct link on the link where the receiving station is located, the receiving station may further determine whether the receiving station is the destination station of the transmission frame through the field set, that is, the field set The identifier of the directly connected link of the identifier is compared with the identifier of the directly connected link where the receiving station is located. When the identifier of the directly connected link of the receiving station has an identifier matching the identifier of the directly connected link identified by the field set, , indicating that the receiving station is the destination station of the transmission frame, and will continue to parse the transmission frame. When the identifier of the direct link of the receiving station does not exist in the identifier of the direct link identified by the field set, the receiving station is indicated. Not the destination site of the transmission frame, will be discarded Transfer frames.

In an embodiment, the physical header may further include an uplink and downlink indication field. When the value of the uplink and downlink indication field is a second preset value, the receiving station may determine, according to the value of the uplink and downlink indication field, that the transmission frame is an uplink transmission frame, and Discard the transmission frame. When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value of the first preset value or the first preset range, the receiving station may determine the transmission frame according to the value of the uplink and downlink indication field. The downlink transmission frame or the direct transmission transmission frame may further determine that the transmission frame is a direct connection transmission frame according to the value of the first field, and when the link where the receiving station is located is a non-directly connected link, indicating that the transmission frame is not sent to the receiving. The transmission frame of the station, that is, the receiving station is not the destination station of the transmission frame, will discard the transmission frame, and does not need to parse the transmission frame, which can improve the processing efficiency of the transmission frame; when the link where the receiving station is located has a direct link, indicating the transmission frame It may be a transmission frame sent to the receiving station, that is, the receiving station may be the destination station of the transmission frame, and may continue to parse the transmission frame to further determine whether the transmission frame is a transmission frame transmitted to the receiving station. When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, the receiving station may determine, according to the value of the uplink and downlink indication field, that the transmission frame is a downlink transmission frame or a straight line. The transmission frame is further transmitted, and the transmission frame is further determined to be a downlink transmission frame according to the value of the first field. When the link where the receiving station is located is a direct link, indicating that the transmission frame is not a transmission frame sent to the receiving station, that is, the receiving station It is not the destination station of the transmission frame, the transmission frame will be discarded, and the transmission frame is not needed to be parsed, which can improve the processing efficiency of the transmission frame. When the link where the receiving station is located has a non-directly connected link, it indicates that the transmission frame may be sent to the receiving station. The transmission frame, that is, the receiving station may be the destination station of the transmission frame, may continue to parse the transmission frame to further determine whether the transmission frame is a transmission frame transmitted to the receiving station. Therefore, the transmission frame can be directly determined according to the information in the physical header as a direct transmission frame, an uplink transmission frame, or a downlink transmission frame, which can improve the recognition efficiency of the transmission frame type.

In the data transmission method described in FIG. 2, after receiving the transmission frame, the STA may determine whether the transmission frame is a direct transmission transmission frame by using the value of the first field in the physical header, and does not need to parse the information in the MAC header. It can improve the efficiency of identifying direct transmission frames.

Based on the data transmission network architecture shown in FIG. 1, FIG. 3 is a schematic flowchart of another data transmission method according to an embodiment of the present invention. Wherein, the embodiment of the present invention is to generate a transmission frame. Described as the site and the point at which the station transmitting the frame is received, the station that generated the transmission frame is the station that has established the direct link. As shown in FIG. 3, the data transmission method may include the following steps.

301. The sending station generates a first high-efficiency signaling sub-domain that adopts a first modulation mode and a transmission frame that uses a second high-efficiency signaling sub-domain of the second modulation mode.

In this embodiment, when the transmitting station needs to transmit data to other stations, the sending station generates a transmission frame for transmitting data, and the type of the transmission frame may be a direct transmission frame, an uplink transmission frame, or a downlink. Transfer frames. The transport frame may include a physical header, the physical header may include a high efficiency signaling domain, and the high efficiency signaling domain may include a first high efficiency signaling subfield and a second high efficiency signaling subdomain, the first high efficiency signaling sub The domain adopts a first modulation mode, and the second high efficiency signaling sub-domain adopts a second modulation mode. When the first modulation mode is different from the second modulation mode, it indicates that the transmission frame is a direct transmission frame. When the first modulation mode is the same as the second modulation mode, it indicates that the transmission frame is a non-directly connected transmission frame.

In an embodiment, the physical header may further include an uplink and downlink indication field. When the value of the uplink and downlink indication field is a first preset value, the transmission frame is an uplink transmission frame, and the value of the uplink and downlink indication field is a second pre- If the value is set, and the first modulation mode is different from the second modulation mode, the transmission frame is a direct transmission frame, and the value of the uplink and downlink indication field is a second preset value, and the first modulation mode is compared with the second modulation mode. At the same time, it indicates that the transmission frame is a downlink transmission frame.

In an embodiment, the first modulation mode and/or the second modulation mode may be BPSK or QBPSK, that is, the first modulation mode may be BPSK or QBPSK, and the second modulation mode may also be BPSK or QBPSK.

302. The sending station sends a transmission frame.

303. The receiving station receives the transmission frame.

304. When the first modulation mode is different from the second modulation mode, the receiving station determines that the transmission frame is a direct transmission frame. When the first modulation mode is the same as the second modulation mode, the receiving station determines that the transmission frame is a non-directly connected transmission frame. .

In this embodiment, after receiving the transmission frame, the receiving station first parses the physical header of the transmission frame, when the first modulation mode of the first high-efficiency signaling sub-domain and the second modulation of the second high-efficiency signaling sub-domain When the mode is different, the receiving station determines that the transmission frame is a direct transmission frame. When the link where the receiving station is located is a non-directly connected link, it indicates that the transmission frame is not a transmission frame sent to the receiving station, that is, the receiving station is not the purpose of transmitting the frame. The station will discard the transmission frame and does not need to continue to parse the transmission frame, which can improve the processing efficiency of the transmission frame. When there is a direct link on the link where the receiving station is located, it indicates that the transmission frame may be sent to the receiving. The transmission frame of the station, that is, the receiving station may be the destination station of the transmission frame, may continue to parse the transmission frame to further determine whether the transmission frame is a transmission frame sent to the receiving station. When the first modulation mode of the first high-efficiency signaling sub-domain is the same as the second modulation mode of the second high-efficiency signaling sub-domain, the receiving station determines that the transmission frame is a non-directly connected transmission frame, and when the receiving station is located in the link When the link is directly connected, it indicates that the transmission frame is not the transmission frame sent to the receiving station, that is, the receiving station is not the destination station of the transmission frame, and the transmission frame will be discarded. It is not necessary to continue to parse the transmission frame, which can improve the processing efficiency of the transmission frame; When there is a non-directly connected link on the link where the receiving station is located, it indicates that the transmission frame may be a transmission frame sent to the receiving station, that is, the receiving station may be the destination station of the transmission frame, and may continue to parse the transmission frame to further determine whether the transmission frame is The transmission frame sent to the receiving site.

In an embodiment, the physical header may further include an uplink and downlink indication field. When the value of the uplink and downlink indication field is a first preset value, the receiving station may determine, according to the value of the uplink and downlink indication field, that the transmission frame is an uplink transmission frame, and Discard the transmission frame. When the value of the uplink and downlink indication field is a second preset value, and the first modulation mode is different from the second modulation mode, the receiving station may determine, according to the value of the uplink and downlink indication field, that the transmission frame is a direct transmission frame or a downlink transmission frame. And further determining that the transmission frame is a direct transmission frame according to the first modulation mode and the second modulation mode, and when the link where the receiving station is located is a non-directly connected link, indicating that the transmission frame is not a transmission frame sent to the receiving station, That is, the receiving station is not the destination station of the transmission frame, and the transmission frame will be discarded. The transmission frame is not needed to be parsed, which can improve the processing efficiency of the transmission frame. When the link where the receiving station is located has a direct link, it indicates that the transmission frame may be sent to the receiving. The transmission frame of the station, that is, the receiving station may be the destination station of the transmission frame, may continue to parse the transmission frame to further determine whether the transmission frame is a transmission frame sent to the receiving station. When the value of the uplink and downlink indication field is the second preset value, and the first modulation mode is the same as the second modulation mode, the receiving station may determine, according to the value of the uplink and downlink indication field, that the transmission frame is a direct transmission frame or a downlink transmission frame. And further determining that the transmission frame is a downlink transmission frame according to the first modulation mode and the second modulation mode. When the link where the receiving station is located is a direct link, indicating that the transmission frame is not a transmission frame sent to the receiving station, that is, receiving The site is not the destination of the transmission frame. The transmission frame will be discarded. The transmission frame is not needed to parse the transmission frame. The processing efficiency of the transmission frame can be improved. When the link where the receiving station is located has a non-directly connected link, it indicates that the transmission frame may be sent to the receiving site. The transmission frame, that is, the receiving station may be the destination station of the transmission frame, may continue to parse the transmission frame to further determine whether the transmission frame is a transmission frame transmitted to the receiving station. Therefore, the transmission frame can be directly determined according to the information in the physical header as a direct transmission frame, an uplink transmission frame, or a downlink transmission frame, which can improve the recognition efficiency of the transmission frame type.

In the data transmission method described in FIG. 3, after receiving the transmission frame, the STA may determine whether the transmission frame is determined by the modulation mode of the first high-efficiency signaling sub-domain and the second high-efficiency signaling sub-domain in the physical header. Direct transmission of the frame without the need to parse the information in the MAC header can improve the efficiency of identifying the directly connected transmission frame.

In an embodiment, when the first modulation mode of the first high efficiency signaling subfield is the same as the second modulation mode of the second high efficiency signaling subfield, indicating that the transmission frame is a direct transmission frame, when the first high When the first modulation mode of the efficiency signaling subfield is different from the second modulation mode of the second high efficiency signaling subfield, it indicates that the transmission frame is a non-directly connected transmission frame.

Based on the data transmission network architecture shown in FIG. 1 , please refer to FIG. 4 , which is a schematic structural diagram of a sending station according to an embodiment of the present invention. The sending station is a station that has established a direct link, and can generate and send a transmission frame. As shown in FIG. 4, the sending station may include:

The generating unit 401 is configured to generate a transmission frame, where the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, and the physical header may include a first field;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field may indicate that the transmission frame is a direct transmission frame;

When the value of the first field is a value in the second preset range, the value of the first field may indicate a color or a sub-color of the basic service set, and the value of the first field indicates that the transmission frame is a non-directly connected transmission frame;

The first preset range has no intersection with the second preset range, and the second preset range does not include the first preset value, and the indirectly connected transmission frame may include an uplink transmission frame and a downlink transmission frame.

The communication unit 402 is configured to send the transmission frame generated by the generating unit 401.

As a possible implementation manner, the physical header may further include an uplink and downlink indication field;

When the value of the first field is a value in the second preset range, the value of the first field may indicate a color or a sub-color of the basic service set, and the value of the first field indicates that the transmission frame is a non-directly connected transmission frame. :

When the value of the uplink and downlink indication field is a second preset value, the second preset value may indicate that the transmission frame is an uplink transmission frame, and the value of the first field may indicate a color or a sub-color of the basic service set;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, the value of the first field may indicate that the transmission frame is a downlink transmission frame, and indicates a basic service. Set of colors or sub-colors;

When the value of the first field is the first preset value or the value in the first preset range, the value of the first field may indicate that the transmission frame is a direct transmission frame, including:

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value of the first preset value or the first preset range, the value of the first field may indicate that the transmission frame is a direct transmission. frame.

As a possible implementation manner, when the value of the first field is a value in the first preset range, the value of the first field is further used to indicate the identifier of the direct link where the sending station is located.

As a possible implementation manner, the physical header may further include a field set, where the field set may include at least one of a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication field;

When the value of the first field is the first preset value, the field set is used to indicate the identity of the direct link where the sending station is located.

As a possible implementation manner, the first field belongs to a high efficiency signaling domain.

As a possible implementation manner, the value of the first field may include: the first field has a bit of 1.

In the transmitting station described in FIG. 4, the physical header of the transmission frame includes a first field for indicating whether the transmission frame is a direct transmission transmission frame, so that after the STA receives the transmission frame, the STA may pass the value of the first field in the physical header. It can be determined whether the transmission frame is a direct transmission transmission frame without resolving the information in the MAC header, and the efficiency of identifying the direct transmission transmission frame can be improved.

Based on the data transmission network architecture shown in FIG. 1, please refer to FIG. 5. FIG. 5 is a schematic structural diagram of another sending station according to an embodiment of the present invention. The sending station is a station that has established a direct link, and can generate and send a transmission frame. As shown in FIG. 5, the transmitting station may include a processor 501, a memory 502, and a transmitter 503, where:

A set of program codes is stored in the memory 502, and the processor 501 is configured to call the program code stored in the memory 502 to perform the following operations:

Generating a transmission frame, the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, and the physical header may include a first field;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct transmission frame;

When the value of the first field is a value in the second preset range, the value of the first field is used to indicate the color or sub-color of the basic service set, and the value of the first field indicates that the transmission frame is a non-direct transmission frame. ;

A transmitter 503 is configured to transmit a transmission frame.

When the value of the first field is a value in the second preset range, the value of the first field is used to indicate the color or sub-color of the basic service set, and the value of the first field indicates that the transmission frame is a non-direct transmission frame. include:

When the value of the uplink and downlink indication field is a second preset value, the second preset value is used to indicate that the transmission frame is an uplink transmission frame, and the value of the first field is used to indicate a color or a sub-color of the basic service set;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, the value of the first field is used to indicate that the transmission frame is a downlink transmission frame, and indicates basic The color or sub-color of the service set;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct transmission frame, including:

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is directly connected. Transfer frames.

As a possible implementation manner, the value of the first field is a first preset value, and the first field has a bit of 1.

In the transmitting station described in FIG. 5, the physical header of the transmission frame includes a first field for indicating whether the transmission frame is a direct transmission transmission frame, so that after the STA receives the transmission frame, the STA may pass the first in the physical header. The value of the field can determine whether the transmission frame is a direct transmission frame without resolving the information in the MAC header, which can improve the efficiency of identifying the directly connected transmission frame.

Based on the data transmission network architecture shown in FIG. 1, please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a receiving station according to an embodiment of the present invention. Wherein, the receiving station is a station that receives a transmission frame. As shown in FIG. 6, the receiving site may include:

The communication unit 601 is configured to receive a transmission frame, where the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, and the physical header may include a first field;

The determining unit 602 is configured to determine, according to the value of the first field, that the transmission frame is directly connected, when the value of the first field included in the transmission frame received by the communication unit 601 is a first preset value or a value in the first preset range. Transmission frame

The determining unit 602 is further configured to: when the value of the first field included in the transmission frame received by the communication unit 601 is a value in the second preset range, determine, according to the value of the first field, that the transmission frame is a non-directly connected transmission frame, and Determining a color or a sub-color of the basic service set according to the value of the first field, where the first preset range has no intersection with the second preset range, and the second preset range does not include the first preset value, and the indirectly connected transmission frame may include Uplink transmission frame and downlink transmission frame.

The determining unit 602 determines, when the value of the first field is a value in the second preset range, that the transmission frame is a non-directly connected transmission frame according to the value of the first field, and determines the color of the basic service set according to the value of the first field or Sub-colors include:

When the value of the uplink and downlink indication field is a second preset value, determining, according to the second preset value, that the transmission frame is an uplink transmission frame, and determining a color or a sub-color of the basic service set according to the value of the first field;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, determining, according to the value of the first field, that the transmission frame is a downlink transmission frame, and according to the first field The value determines the color or sub-color of the basic service set;

The determining unit 602, when the value of the first field is the value of the first preset value or the first preset range, determining, according to the value of the first field, that the transmission frame is a direct transmission frame includes:

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value of the first preset value or the first preset range, determining, according to the value of the first field, that the transmission frame is a direct connection transmission frame.

As a possible implementation manner, the determining unit 602 is further configured to: when the value of the first field is a value in the first preset range, and the identifier of the direct link indicated by the value of the first field is the receiving station When the identity of the link is directly connected, it is determined that the receiving site is the destination site of the transmission frame.

The determining unit 602 is further configured to: when the value of the first field is a first preset value, and the identifier of the direct link indicated by the value of the field set is an identifier of the direct link in which the receiving station is located, determine that the receiving station is The destination site for the transmission frame.

In the receiving station described in FIG. 6, after receiving the transmission frame, the STA may determine whether the transmission frame is a direct transmission transmission frame by using the value of the first field in the physical header, without resolving the information in the MAC header. Improve the efficiency of identifying direct transmission frames.

Based on the data transmission network architecture shown in FIG. 1, please refer to FIG. 7. FIG. 7 is a schematic structural diagram of another receiving station according to an embodiment of the present invention. Wherein, the receiving station is a station that receives a transmission frame. As shown in FIG. 7, the receiving station may include a processor 701, a memory 702, and a receiver 703, where:

The receiver 703 is configured to receive a transmission frame, where the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, and the physical header may include a first field;

The memory 702 stores a set of program codes, and the processor 701 is configured to call the program code stored in the memory 702 to perform the following operations:

When the value of the first field is a value of the first preset value or the first preset range, determining, according to the value of the first field, that the transmission frame is a direct transmission frame;

When the value of the first field is a value in the second preset range, determining, according to the value of the first field, that the transmission frame is a non-directly connected transmission frame, and determining a color or a sub-color of the basic service set according to the value of the first field, The first preset range has no intersection with the second preset range, and the second preset range does not include the first preset value, and the indirectly connected transmission frame includes an uplink transmission frame and a downlink transmission frame.

The processor 701 determines, when the value of the first field is a value in the second preset range, that the transmission frame is a non-directly connected transmission frame according to the value of the first field, and determines the color of the basic service set according to the value of the first field or The way of sub-colors is:

When the value of the first field is a value of the first preset value or the first preset range, the processor 701 determines, according to the value of the first field, that the transmission frame is a direct transmission frame:

As a possible implementation manner, the processor 701 is further configured to invoke the program code stored in the memory 702 to perform the following operations:

When the value of the first field is a value in the first preset range, and the identifier of the direct link indicated by the value of the first field is the identifier of the direct link where the receiving station is located, determining that the receiving station is a transmission frame Destination site.

The processor 701 is further configured to call the program code stored in the memory 702 to perform the following operations:

When the value of the first field is the first preset value, and the identifier of the direct link indicated by the value of the field set is the identifier of the direct link in which the receiving station is located, it is determined that the receiving station is the destination station of the transmission frame.

In the receiving station described in FIG. 7, after receiving the transmission frame, the STA may determine whether the transmission frame is a direct transmission transmission frame by using the value of the first field in the physical header, without resolving the MAC header. Information can improve the efficiency of identifying directly connected frames.

Based on the data transmission network architecture shown in FIG. 1, please refer to FIG. 8. FIG. 8 is a schematic structural diagram of another transmission station according to an embodiment of the present invention. The sending station is a station that has established a direct link, and can generate and send a transmission frame. As shown in FIG. 8, the sending station may include:

The generating unit 801 is configured to generate a transmission frame, where the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, and the physical header may include a high efficiency signaling domain, and high efficiency signaling. The domain may include a first high-efficiency signaling sub-domain and a second high-efficiency signaling sub-domain, where the first high-efficiency signaling sub-domain adopts a first modulation mode, and the second high-efficiency signaling sub-domain adopts a second modulation mode;

When the first modulation mode is different from the second modulation mode, the transmission frame is a direct transmission frame, and when the first modulation mode is the same as the second modulation mode, the transmission frame is a non-directly connected transmission frame;

The sending unit 802 is configured to send the transmission frame generated by the generating unit 801.

As a possible implementation, the physical header may further include an uplink and downlink indication field. When the value of the uplink and downlink indication field is a first preset value, the first preset value is used to indicate that the transmission frame is an uplink transmission frame, when The value of the row indication field is a second preset value, and when the first modulation mode is different from the second modulation mode, the transmission frame is a direct connection transmission frame, and the value of the uplink and downlink indication field is a second preset value, and the first When the modulation mode is the same as the second modulation mode, the transmission frame is a downlink transmission frame.

As a possible implementation manner, the first modulation mode and/or the second modulation mode may be BPSK or QBPSK.

In the transmitting station described in FIG. 8, the physical header of the transmission frame includes a first high efficiency signaling subfield and a second high efficiency signaling subfield for indicating whether the transmission frame is a direct transmission transmission frame, so that the STA receives After the frame is transmitted, the first high-efficiency signaling sub-domain and the second high-efficiency signaling sub-domain in the physical header can be used to determine whether the transmission frame is a direct-transmission transmission frame, and the information in the MAC header is not needed to be parsed. , can improve the efficiency of identifying direct transmission frames.

Based on the data transmission network architecture shown in FIG. 1, please refer to FIG. 9. FIG. 9 is a schematic structural diagram of another transmitting station according to an embodiment of the present invention. The sending station is a station that has established a direct link, and can generate and send a transmission frame. As shown in FIG. 9, the transmitting station may include a processor 901, a memory 902, and a transmitter 903, where:

The memory 902 stores a set of program codes, and the processor 901 is configured to call the program code stored in the memory 902 to perform the following operations:

Generating a transmission frame, the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, the physical header may include a high efficiency signaling domain, and the high efficiency signaling domain may include the first high An efficiency signaling sub-domain and a second high-efficiency signaling sub-domain, where the first high-efficiency signaling sub-domain adopts a first modulation mode, and the second high-efficiency signaling sub-domain adopts a second modulation mode;

A transmitter for transmitting transmission frames.

In the transmitting station described in FIG. 9, the physical header of the transmission frame includes a first high efficiency signaling subfield and a second high efficiency signaling subfield for indicating whether the transmission frame is a direct transmission transmission frame, so that the STA receives After the frame is transmitted, the first high-efficiency signaling sub-domain and the second high-efficiency signaling sub-domain in the physical header can be used to determine whether the transmission frame is a direct-transmission transmission frame, and the information in the MAC header is not needed to be parsed. , can improve the efficiency of identifying direct transmission frames.

Based on the data transmission network architecture shown in FIG. 1, please refer to FIG. 10, which is a schematic structural diagram of another receiving station according to an embodiment of the present invention. Wherein, the receiving station is a station that receives a transmission frame. As shown in FIG. 10, the receiving site may include:

The receiving unit 1001 is configured to receive a transmission frame, where the type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame may include a physical header, and the physical header may include a high efficiency signaling domain, and high efficiency signaling. The domain may include a first high-efficiency signaling sub-domain and a second high-efficiency signaling sub-domain, where the first high-efficiency signaling sub-domain adopts a first modulation mode, and the second high-efficiency signaling sub-domain adopts a second modulation mode;

a determining unit 1002, configured to determine a transmission frame when a first modulation manner of the first high efficiency signaling subfield received by the receiving unit 1001 is different from a second modulation manner of the second high efficiency signaling subfield received by the receiving unit 1001 Transmit frames for direct connection;

The determining unit 1002 is further configured to: when the first modulation mode of the first high-efficiency signaling sub-domain received by the receiving unit 1001 is the same as the second modulation mode of the second high-efficiency signaling sub-domain received by the receiving unit 1001, determine the transmission The frame is a non-directly connected transmission frame.

The determining unit 1002, when the first modulation mode is different from the second modulation mode, determining that the transmission frame is a direct transmission frame includes:

When the value of the uplink and downlink indication field is a second preset value, and the first modulation mode is different from the second modulation mode, determining that the transmission frame is a direct connection transmission frame;

Determining unit 1002, when the first modulation mode is the same as the second modulation mode, determining that the transmission frame is a non-directly connected transmission frame includes:

When the value of the uplink and downlink indication field is the first preset value, determining that the transmission frame is an uplink transmission frame;

When the value of the uplink and downlink indication field is the second preset value, and the first modulation mode is the same as the second modulation mode, it is determined that the transmission frame is a downlink transmission frame.

In one embodiment, the first modulation mode and/or the second modulation mode may be BPSK or QBPSK.

In the receiving station described in FIG. 10, after receiving the transmission frame, the STA may determine whether the transmission frame is straight through the modulation mode of the first high-efficiency signaling sub-domain and the second high-efficiency signaling sub-domain in the physical header. Even if the frame is transmitted without the need to parse the information in the MAC header, the efficiency of identifying the directly connected transmission frame can be improved.

Based on the data transmission network architecture shown in FIG. 1, FIG. 11 is a schematic structural diagram of another receiving station according to an embodiment of the present invention. Wherein, the receiving station is a station that receives a transmission frame. As shown in FIG. 11, the receiving station may include a processor 1101, a memory 1102, and a receiver 1103, where:

The receiver 1103 is configured to receive a transmission frame and send the signal to the processor 1101. The type of the transmission frame may be a direct transmission frame or an uplink transmission frame or a downlink transmission frame. The transmission frame may include a physical header, and the physical header may be In order to include a high-efficiency signaling domain, the high-efficiency signaling domain may include a first high-efficiency signaling sub-domain and a second high-efficiency signaling sub-domain, where the first high-efficiency signaling sub-domain adopts a first modulation mode, and the second highest The efficiency signaling subfield adopts a second modulation mode;

The memory 1102 stores a set of program codes, and the processor 1101 is configured to call the program code stored in the memory 1102 to perform the following operations:

When the first modulation mode is different from the second modulation mode, determining that the transmission frame is a direct connection transmission frame;

When the first modulation mode is the same as the second modulation mode, it is determined that the transmission frame is a non-directly connected transmission frame.

In an embodiment, the physical header may further include an uplink and downlink indication field;

When the first modulation mode is different from the second modulation mode, the processor 1101 determines that the transmission frame is a direct transmission frame:

When the first modulation mode and the second modulation mode are the same, the processor 1101 determines that the transmission frame is a non-directly connected transmission frame:

In the receiving station described in FIG. 11, after receiving the transmission frame, the STA may determine whether the transmission frame is straight through the modulation mode of the first high-efficiency signaling sub-domain and the second high-efficiency signaling sub-domain in the physical header. Even if the frame is transmitted without the need to parse the information in the MAC header, the efficiency of identifying the directly connected transmission frame can be improved.

In one embodiment, a readable storage medium stores program code for a transmitting station or a receiving station for performing the data transmission method corresponding to FIGS. 2 and 3 of the embodiment of the present invention.

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: Flash disk, Read-Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

The virtual carrier sensing method and apparatus provided by the embodiments of the present invention are described in detail. The principles and implementations of the present invention are described in the following. The description of the foregoing embodiments is only for helping to understand the present invention. The method and its core idea; at the same time, those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of the specification should not be understood as Limitations of the invention.

Claims

A data transmission method, wherein the method is applied to a transmitting station that has established a direct link, including:

The transmitting station generates a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame includes a physical header, and the physical header includes a first field;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct connection transmission frame;

When the value of the first field is a value within a second preset range, the value of the first field is used to indicate a color or a sub-color of the basic service set, and the value of the first field indicates the The transmission frame is a non-directly connected transmission frame;

The first preset range does not intersect with the second preset range, the second preset range does not include the first preset value, and the indirectly connected transmission frame includes an uplink transmission frame and a downlink. Transmission frame

The transmitting station transmits the transmission frame.
The method according to claim 1, wherein the physical header further comprises an uplink and downlink indication field;

When the value of the first field is a value in a second preset range, the value of the first field is used to indicate a color or a sub-color of the basic service set, and the value of the first field is represented by the value of the first field. The transmission frame is a non-directly connected transmission frame including:

When the value of the uplink and downlink indication field is a second preset value, the second preset value is used to indicate that the transmission frame is an uplink transmission frame, and the value of the first field is used to indicate a basic service set. Color or sub-color;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, the value of the first field is used to indicate that the transmission frame is Downstream transmission of the frame and indicating the color or sub-color of the basic service set;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct transmission frame, including:

When the value of the uplink and downlink indication field is the third preset value, and the value of the first field is a value of the first preset value or the first preset range, the value of the first field Used to indicate that the transmission frame is Directly transmit frames.
The method according to claim 1, wherein when the value of the first field is a value within the first preset range, the value of the first field is further used to indicate that the sending station is located The ID of the direct link.
The method according to claim 1, wherein the physical header further comprises a field set, the field set includes a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication field. At least one of them;

When the value of the first field is the first preset value, the field set is used to indicate an identifier of a direct link where the sending station is located.
The method according to any one of claims 1 to 4, wherein the first field belongs to a high efficiency signaling domain.
The method according to any one of claims 1-5, wherein the value of the first field is the first preset value, and the bits of the first field are all 1.
A data transmission method, comprising:

Receiving, by the receiving station, a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, where the transmission frame includes a physical header, and the physical header includes a first field;

When the value of the first field is a value of the first preset value or the first preset range, the receiving station determines, according to the value of the first field, that the transmission frame is a direct connection transmission frame;

When the value of the first field is a value in a second preset range, the receiving station determines, according to the value of the first field, that the transmission frame is a non-directly connected transmission frame, and according to the first field. The value of the basic service set determines a color or a sub-color of the basic service set, the first preset range does not intersect with the second preset range, and the second preset range does not include the first preset value, the non- The direct transmission frame includes an uplink transmission frame and a downlink transmission frame.
The method according to claim 7, wherein the physical header further comprises an uplink and downlink indication field;

When the value of the first field is a value in a second preset range, the receiving station determines, according to the value of the first field, that the transmission frame is a non-directly connected transmission frame, and according to the The value of a field determines the color or sub-color of the basic service set including:

When the value of the uplink and downlink indication field is a second preset value, the receiving station determines, according to the second preset value, that the transmission frame is an uplink transmission frame, and determines a basic according to the value of the first field. The color or sub-color of the service set;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value within the second preset range, the receiving station determines the value according to the value of the first field. Transmitting a frame as a downlink transmission frame, and determining a color or a sub-color of the basic service set according to the value of the first field;

When the value of the first field is a value of the first preset value or the first preset range, the receiving station determines, according to the value of the first field, that the transmission frame is a direct connection transmission frame, :

When the value of the uplink and downlink indication field is the third preset value, and the value of the first field is a value of a first preset value or a first preset range, the receiving station is configured according to the The value of the first field determines that the transmission frame is a direct transmission transmission frame.
The method of claim 7, wherein the method further comprises:

When the value of the first field is a value in the first preset range, and the identifier of the direct link indicated by the value of the first field is an identifier of a direct link in which the receiving station is located And the receiving station determines that the receiving station is a destination station of the transmission frame.
The method according to claim 7, wherein the physical header further comprises a field set, the field set includes a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication field. At least one of them;

The method further includes:

When the value of the first field is the first preset value, and the identifier of the direct link indicated by the value of the field set is the identifier of the direct link of the receiving station, the receiving The station determines that the receiving station is the destination site of the transmission frame.
The method according to any of claims 7-10, wherein the first field belongs to a high efficiency signaling domain.
The method according to any one of claims 7 to 11, wherein the value of the first field is the first preset value, and the bits of the first field are all 1.
A transmitting station, wherein the sending station is a station that has established a direct link, and includes:

a generating unit, configured to generate a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, where the transmission frame includes a physical header, and the physical header includes a first field;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct connection transmission frame;

When the value of the first field is a value within a second preset range, the value of the first field is used to indicate a color or a sub-color of the basic service set, and the value of the first field indicates the The transmission frame is a non-directly connected transmission frame;

The first preset range does not intersect with the second preset range, the second preset range does not include the first preset value, and the indirectly connected transmission frame includes an uplink transmission frame and a downlink. Transmission frame

a communication unit, configured to send a transmission frame generated by the generating unit.
The transmitting station according to claim 13, wherein the physical header further comprises an uplink and downlink indication field;

When the value of the first field is a value in a second preset range, the value of the first field is used to indicate a color or a sub-color of the basic service set, and the value of the first field is represented by the value of the first field. The transmission frame is a non-directly connected transmission frame including:

When the value of the uplink and downlink indication field is a second preset value, the second preset value is used to indicate that the transmission frame is an uplink transmission frame, and the value of the first field is used to indicate a basic service set. Color or sub-color;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, the value of the first field is used to indicate that the transmission frame is Downlink transmission frame, and refers to Shows the color or sub-color of the basic service set;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct transmission frame, including:

When the value of the uplink and downlink indication field is the third preset value, and the value of the first field is a value of the first preset value or the first preset range, the value of the first field And is used to indicate that the transmission frame is a direct transmission transmission frame.
The transmitting station according to claim 13, wherein when the value of the first field is a value within the first preset range, the value of the first field is further used to indicate the sending station The ID of the directly connected link.
The transmitting station according to claim 13, wherein the physical header further comprises a field set, the field set includes a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication. At least one of the fields;

When the value of the first field is the first preset value, the field set is used to indicate an identifier of a direct link where the sending station is located.
The transmitting station according to any one of claims 13-16, wherein the first field belongs to a high efficiency signaling domain.
The transmitting station according to any one of claims 13-17, wherein the value of the first field is the first preset value, and the bits of the first field are all 1.
A transmitting station, characterized in that the transmitting station is a station that has established a direct link, including a processor, a memory, and a transmitter, where:

The memory stores a set of program codes, and the processor is configured to call the program code stored in the memory to perform the following operations:

Generating a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, the transmission frame includes a physical header, and the physical header includes a first field;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct connection transmission frame;

When the value of the first field is a value within a second preset range, the value of the first field is used to indicate a color or a sub-color of the basic service set, and the value of the first field indicates the The transmission frame is a non-directly connected transmission frame;

The first preset range does not intersect with the second preset range, the second preset range does not include the first preset value, and the indirectly connected transmission frame includes an uplink transmission frame and a downlink. Transmission frame

The transmitter is configured to send the transmission frame.
The transmitting station according to claim 19, wherein the physical header further comprises an uplink and downlink indication field;

When the value of the first field is a value in a second preset range, the value of the first field is used to indicate a color or a sub-color of the basic service set, and the value of the first field is represented by the value of the first field. The transmission frame is a non-directly connected transmission frame including:

When the value of the uplink and downlink indication field is a second preset value, the second preset value is used to indicate that the transmission frame is an uplink transmission frame, and the value of the first field is used to indicate a basic service set. Color or sub-color;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, the value of the first field is used to indicate that the transmission frame is Downstream transmission of the frame and indicating the color or sub-color of the basic service set;

When the value of the first field is a value of the first preset value or the first preset range, the value of the first field is used to indicate that the transmission frame is a direct transmission frame, including:

When the value of the uplink and downlink indication field is the third preset value, and the value of the first field is a value of the first preset value or the first preset range, the value of the first field And is used to indicate that the transmission frame is a direct transmission transmission frame.
The transmitting station according to claim 19, wherein when the value of the first field is a value within the first preset range, the value of the first field is further used to indicate the sending station The ID of the directly connected link.
The transmitting station according to claim 19, wherein the physical header further comprises a field set, the field set includes a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication. At least one of the fields;

When the value of the first field is the first preset value, the field set is used to indicate an identifier of a direct link where the sending station is located.
The transmitting station according to any one of claims 19-22, wherein the first field belongs to a high efficiency signaling domain.
The transmitting station according to any one of claims 19 to 23, wherein the value of the first field is the first preset value, and the bits of the first field are all 1.
A receiving station, comprising:

a communication unit, configured to receive a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, where the transmission frame includes a physical header, and the physical header includes a first field;

a determining unit, configured to determine, according to a value of the first field, when a value of the first field included in the transmission frame received by the communication unit is a first preset value or a value within a first preset range The transmission frame is a direct transmission frame;

The determining unit is further configured to: when the value of the first field included in the transmission frame received by the communication unit is a value in a second preset range, determine the transmission frame according to a value of the first field Transmitting a frame for indirect connection, and determining a color or a sub-color of the basic service set according to the value of the first field, where the first preset range does not intersect with the second preset range, the second preset The range does not include the first preset value, and the indirectly connected transmission frame includes an uplink transmission frame and a downlink transmission frame.
The receiving station according to claim 25, wherein the physical header further comprises an uplink and downlink indication field;

Determining, by the determining unit, that the value of the first field is a value in the second preset range, determining, according to the value of the first field, that the transmission frame is a non-directly connected transmission frame, and according to the first field The value determines the color or sub-color of the basic service set includes:

When the value of the uplink and downlink indication field is a second preset value, determining, according to the second preset value, the transmission frame is an uplink transmission frame, and determining a color of the basic service set according to the value of the first field. Or sub-color;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, determining, according to the value of the first field, that the transmission frame is a downlink Transmitting a frame and determining a color or sub-color of the basic service set according to the value of the first field;

The determining unit, when the value of the first field is a value of the first preset value or the first preset range, determining, according to the value of the first field, that the transmission frame is a direct connection transmission frame, includes:

When the value of the uplink and downlink indication field is the third preset value, and the value of the first field is a value of the first preset value or the first preset range, according to the first field The value determines that the transmission frame is a direct transmission transmission frame.
The receiving station according to claim 25, wherein the determining unit is further configured to: when the value of the first field is a value within the first preset range, and the value of the first field When the identifier of the indicated direct link is the identifier of the direct link of the receiving station, the receiving station is determined to be the destination station of the transmission frame.
The receiving station according to claim 25, wherein the physical header further comprises a field set, the field set includes a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication. At least one of the fields;

The determining unit is further configured to: when the value of the first field is the first preset value, and the identifier of the direct link indicated by the value of the field set is a direct link of the receiving station When the identity of the road is identified, the receiving station is determined to be the destination site of the transmission frame.
The receiving station according to any one of claims 25-28, wherein the first field belongs to a high efficiency signaling domain.
The receiving station according to any one of claims 25 to 29, wherein the value of the first field is the first preset value, and the bits of the first field are all 1.
A receiving station, comprising: a processor, a memory and a receiver, wherein:

The receiver is configured to receive a transmission frame, where the type of the transmission frame is a direct transmission frame or an uplink transmission frame or a downlink transmission frame, where the transmission frame includes a physical header, and the physical header includes a first field;

The memory stores a set of program codes, and the processor is configured to call the program code stored in the memory to perform the following operations:

When the value of the first field is a value of the first preset value or the first preset range, determining, according to the value of the first field, that the transmission frame is a direct connection transmission frame;

When the value of the first field is a value in the second preset range, determining, according to the value of the first field, the transmission frame is a non-directly connected transmission frame, and determining a basic according to the value of the first field. a color or a sub-color of the service set, the first preset range has no intersection with the second preset range, and the second preset range does not include the first preset value, the indirect connection transmission frame It includes an uplink transmission frame and a downlink transmission frame.
The receiving station according to claim 31, wherein the physical header further comprises an uplink and downlink indication field;

When the value of the first field is a value in the second preset range, determining, by the value of the first field, that the transmission frame is a non-directly connected transmission frame, and according to the first field The way the value determines the color or sub-color of the basic service set is:

When the value of the uplink and downlink indication field is a second preset value, determining, according to the second preset value, the transmission frame is an uplink transmission frame, and determining a color of the basic service set according to the value of the first field. Or sub-color;

When the value of the uplink and downlink indication field is a third preset value, and the value of the first field is a value in the second preset range, determining, according to the value of the first field, that the transmission frame is a downlink Transmitting a frame and determining a color or sub-color of the basic service set according to the value of the first field;

When the value of the first field is a value of the first preset value or the first preset range, determining, by the value of the first field, that the transmission frame is a direct transmission frame is :

When the value of the uplink and downlink indication field is the third preset value, and the value of the first field is a value of the first preset value or the first preset range, according to the first field The value determines that the transmission frame is a direct transmission transmission frame.
The receiving station according to claim 31, wherein the processor is further configured to call the program code stored in the memory to perform the following operations:

When the value of the first field is a value in the first preset range, and the identifier of the direct link indicated by the value of the first field is an identifier of a direct link in which the receiving station is located Determining that the receiving station is a destination site of the transmission frame.
The receiving station according to claim 31, wherein the physical header further comprises a field set, the field set includes a transport stream number indication field, a space time coding indication field, a beamforming indication field, and a dual carrier modulation indication. At least one of the fields;

The processor is further configured to invoke program code stored in the memory to perform the following operations:

Determining, when the value of the first field is the first preset value, and the identifier of the direct link indicated by the value of the field set is an identifier of a direct link in which the receiving station is located The receiving station is the destination site of the transmission frame.
The receiving station according to any one of claims 31-34, wherein the first field belongs to a high efficiency signaling domain.
The receiving station according to any one of claims 31 to 35, wherein the value of the first field is the first preset value, and the bits of the first field are all 1.