WO2017041540A1

WO2017041540A1 - Method and device for data transmission

Info

Publication number: WO2017041540A1
Application number: PCT/CN2016/084274
Authority: WO
Inventors: 吴伟民; 于健; 郭宇宸; 杨讯; 刘乐
Original assignee: 华为技术有限公司
Priority date: 2015-09-07
Filing date: 2016-06-01
Publication date: 2017-03-16
Also published as: CN106506128B; CN106506128A

Abstract

Disclosed is a method for data transmission, which is used for reducing the overhead of a system. The method of the embodiments of the present invention comprises: a data packet sent by an access point (AP) to a station (STA) comprises resource scheduling information and a data field; the resource scheduling information comprises first indication information; the first indication information indicates that the data field comprises a first time block and a second time block; the first time block and the second time block respectively carry MAC frames, and both adopt the same physical parameter of a space-time stream for transmission; and the STA parses the MAC frames respectively carried by the first time block and the second time block. In this way, the transmission of different MAC frames in the same sub-band is realized, thereby improving the data exchange efficiency of an AP and an STA, and reducing the overhead of a system.

Description

Method and device for data transmission

The present application claims priority to Chinese Patent Application No. 201510562593.5, entitled "A Method and Apparatus for Data Transmission", filed on September 7, 2015, the entire contents of in.

Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for data transmission.

Background technique

Orthogonal Frequency Division Multiplexing (OFDM) is the basic transmission method of current wireless communication. It is widely used in Long Term Evolution (LTE) and Worldwide Interoperability. For Microwave Access, English abbreviation: WiMAX), Wireless Fidelity (Acronym: WiFi) and other wireless communication systems. Not only that, OFDM is further applied to fixed network transmission, such as optical fiber, copper stranded wire, cable and other transmission methods. The basic principle of OFDM is to reduce the subcarrier spacing to a minimum within the range allowed by the orthogonality of subcarriers. This aspect can ensure the formation of multiple parallel and non-interfering paths, and at the same time improve the frequency utilization efficiency of the system. .

Further, since OFDM has the above characteristics, if OFDM non-interfering subcarriers are allocated to multiple users, OFDM can be used to implement multi-user access or data transmission, which is orthogonal frequency division multiple access (Orthogonal). Frequency Division Multiple Access, English abbreviation: OFDMA). The use of OFDMA can realize parallel transmission of multi-user data, which is an effective way to improve the concurrency of data transmission. For uplink OFDMA transmissions, multiple STAs are required to simultaneously transmit data packets on different subbands. In order to achieve the purpose of synchronization, the Access Point (AP) needs to send a trigger frame to multiple stations (Station, English abbreviation: STA), and when the STA receives the short frame interval of the trigger frame (Short Inter-Frame Space (English abbreviation: SIFS) or a certain interval (X Inter-Frame Space, English abbreviation: XIFS) needs to transmit uplink data packets immediately.

In a Transmit Opportunity (TXOP), the AP can continuously perform downlink and uplink multi-user scheduling transmission. For a STA, in a TXOP, the AP needs to transmit downlink frames to it and request it from it. Upstream frame. The AP first transmits downlink frames to the downlink. STA. After the STA receives the downlink frame, it needs to transmit the uplink acknowledgement block or the acknowledgement frame immediately. If the AP also wants to request an uplink frame from the STA, it needs to send another trigger frame. After the STA receives the trigger frame again, the uplink frame transmission can be performed. As can be seen from the entire process, if the AP and the STA want to complete a complete downlink and uplink data transmission, the AP needs to send another trigger frame, which increases the overhead of the system.

In the prior art, an aggregation of a media access control (MAC) frame, that is, an aggregate frame aggregation protocol data module using a MAC protocol data unit (MPDU) (Aggregate-MPDU, English abbreviation: A-MPDU) performs aggregation of different types of frames. Multiple A-MPDU subframes may be included in one A-MPDU, and MPDUs are carried in each A-MPDU subframe. If the first MPDU is an acknowledgment frame and the second MPDU is a Data frame, different types of MAC frames can be simultaneously transmitted.

Since the aggregation is a MAC layer aggregation, different types of MAC frames need to adopt the same physical parameters, such as Modulation and Coding Scheme (MCS) and Number of Spatial and Time Stream (English). Abbreviations: NSTS) and so on. However, the system has different requirements for the robustness of the acknowledgment frame and the data frame, and it is often desirable to confirm that the frame can be more robust. For example, when designing, it is often desirable to confirm that the packet error rate (Packet Error Rate, English abbreviation: PER) can be less than 1%; and for data frames, the packet error rate is less than 10%. If you combine two MAC frames with different requirements, you can only move one of them. If the MCS with a high false positive rate is used at the same time, the acknowledgement frame is not robust enough. If the MCS with a low packet error rate is used at the same time, the transmission rate of the data frame will be slow, which will affect the system throughput.

Summary of the invention

In view of this, the embodiments of the present invention provide a data transmission method and device, which are used to improve data interaction efficiency between an access point AP and a station STA, and reduce system overhead.

A first aspect of the embodiments of the present invention provides a data transmission method, including:

The station STA receives the data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, the resource scheduling information includes physical parameters of the space-time stream, and the resource scheduling information further includes first indication information, where The first indication information is used to indicate each orthogonal frequency division multiple access The number of time blocks included in the data field on the OFDMA subband;

When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block are both performed by using the same physical parameters of the space-time stream. And transmitting, the first time block and the second time block respectively carry a media access control MAC frame; the STA parses the MAC frame carried by the first time block and the second time block respectively.

With reference to the first aspect of the embodiments of the present invention, in a first implementation manner of the first aspect of the embodiments, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols; The method also includes:

Receiving, by the STA, the first time block and the second time block according to physical parameters of the space-time stream;

The STA collects data of the first time block according to the preset number or the indicated number of OFDM symbol lengths;

Determining, by the STA, the OFDM symbol length occupied by the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths;

The STA collects data of the second time block according to an OFDM symbol length occupied by the second time block.

With reference to the first aspect of the embodiment of the present invention or the first implementation manner of the first aspect, in the second implementation manner of the first aspect of the embodiment, the resource scheduling information further includes: corresponding to the second time block. a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; The physical parameter of the first non-space time stream indicates a coded modulation mode of the MAC frame carried by the first time block;

Receiving, by the STA, the MAC frame carried by the second time block includes:

Determining, by the STA, the MAC frame carried by the second time block according to the physical parameter of the second non-empty time stream;

Receiving, by the STA, the MAC frame carried by the first time block includes:

The STA parses the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.

With reference to the first aspect of the embodiment of the present invention or the first implementation manner of the first aspect, in a third implementation manner of the first aspect of the embodiment, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation;

Receiving, by the STA, the MAC frame carried by the first time block includes:

The STA parses the MAC frame carried by the first time block according to the physical parameter of the first non-empty time stream;

Receiving, by the STA, the MAC frame carried by the second time block includes:

The STA parses the MAC frame carried by the second time block according to the physical parameter of the second non-space time stream.

With reference to the first implementation manner of the first aspect of the first embodiment, the second implementation manner of the first aspect, and the third implementation manner of the first aspect, the fourth aspect of the first aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

The first time block occupies a fixed number of OFDM symbols that the AP presets to the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.

In combination with the first implementation manner of the first aspect of the first embodiment, the second implementation manner of the first aspect, and the third implementation manner of the first aspect, the fifth aspect of the first aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.

A second aspect of the embodiments of the present invention provides a data transmission method, including:

The station STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information; the first indication information The information is used to indicate that the STA needs to send the first time block and the second time block to the same orthogonal frequency division multiple access OFDMA subband to the AP;

Transmitting, by the STA, a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, where the first time block and the second time block are the same The physical parameters of the space-time flow are transmitted, and the first time block and the second time block respectively carry a media access control MAC frame.

With reference to the second aspect of the embodiments of the present invention, in a first implementation manner of the second aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect, in the second implementation manner of the second aspect of the embodiment, the resource scheduling information further includes: corresponding to the second time block. a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; The physical parameter of the first non-space time stream indicates a coded modulation mode of the MAC frame carried by the first time block.

With reference to the second aspect of the embodiment of the present invention or the first implementation manner of the second aspect, in the third implementation manner of the second aspect of the embodiment, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation.

With reference to any one of the first implementation manner of the second aspect of the embodiment, the second implementation manner of the second aspect, and the third implementation manner of the second aspect, the fourth aspect of the second aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

In combination with the first implementation manner of the second aspect of the second embodiment, the second implementation manner of the second aspect, and the third implementation manner of the second aspect, In the five implementation manners, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

A third aspect of the embodiments of the present invention provides a data transmission method, including:

The station STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

The STA sends a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time The block and the second time block respectively carry a medium access control MAC frame.

With reference to the third aspect of the embodiments of the present invention, in a first implementation manner of the third aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the third aspect of the embodiment of the present invention or the first implementation manner of the third aspect, in a second implementation manner of the third aspect of the embodiment, the data packet further includes second indication information, where the second The indication information is used to indicate a physical parameter of the non-empty time stream of the first time block and/or the second time block, where the physical parameter of the non-space time stream is used to indicate a coded modulation mode of the corresponding time block. .

With reference to the second implementation manner of the third aspect of the embodiment of the present invention, in a third implementation manner of the third aspect of the embodiment, the second indication information indicates a non-empty time flow of the first time block. The second time block adopts a physical parameter of a preset non-empty time stream; and when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the A time block uses the physical parameters of the preset non-space time stream.

In combination with the first implementation manner of the third aspect of the embodiment, the second implementation manner of the third aspect, and the third implementation manner of the third aspect, the fourth aspect of the third aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to any one of the first implementation manner of the third aspect of the embodiment, the second implementation manner of the third aspect, and the third implementation manner of the third aspect, the fifth aspect of the third aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

The first time block occupies a number of OFDM symbols of a length indicated by the third indication information.

A fourth aspect of the embodiments of the present invention provides a data transmission method, including:

The access point AP sets resource scheduling information in a data packet that needs to be sent to the station STA, where the data packet includes a data field, the resource scheduling information includes first indication information, and the first indication information is used to indicate each positive The number of time blocks included in the data field on the frequency division multiple access OFDMA subband;

When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block are both performed by using the same physical parameters of the space-time stream. Transmitting, the first time block and the second time block respectively carrying a media access control MAC frame;

Sending, by the AP, the data packet and the resource scheduling information to the STA, so that the STA receives the first time block according to physical parameters of the space-time stream according to physical parameters of the space-time stream, and The second time block.

With reference to the fourth aspect of the embodiments of the present invention, in a first implementation manner of the fourth aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the fourth aspect of the embodiment of the present invention or the first implementation manner of the fourth aspect, in the second implementation manner of the fourth aspect of the embodiment, the resource scheduling information further includes: corresponding to the second time block. a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block, where the first time block adopts a preset The physical parameter of the non-time-time stream indicates the coding and modulation mode of the MAC frame carried by the first time block.

With reference to the fourth aspect of the embodiments of the present invention or the first implementation manner of the fourth aspect, in a third implementation manner of the fourth aspect of the embodiments, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation.

With reference to any one of the first implementation manner of the fourth aspect of the embodiment, the second implementation manner of the fourth aspect, and the third implementation manner of the fourth aspect, the fourth aspect of the fourth aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to any one of the first implementation manner of the fourth aspect of the embodiment, the second implementation manner of the fourth aspect, and the third implementation manner of the fourth aspect, the fifth aspect of the fourth aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

A fifth aspect of the embodiments of the present invention provides a data transmission method, including:

The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate the STA Transmitting, by the AP, the first time block and the second time block in the same orthogonal frequency division multiple access OFDMA subband;

Receiving, by the AP, a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, where the first time block and the second time block are both used The physical parameters of the same space-time flow are transmitted, where the first time block and the second time block respectively carry a media access control MAC frame; the AP parses the first time block and the first The MAC frame carried by the two time blocks respectively.

With reference to the fifth aspect of the embodiments of the present invention, the first implementation manner of the fifth aspect of the embodiment of the present invention The first time block occupies a preset number or an indicated number of OFDM symbols; the method further includes:

The AP collects data of the first time block according to the preset number or the indicated number of orthogonal frequency division multiplexing OFDM symbol lengths;

Determining, by the AP, the OFDM symbol length occupied by the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths;

The AP collects data of the second time block according to an OFDM symbol length occupied by the second time block.

With reference to the fifth aspect or the first implementation manner of the fifth aspect, in the second implementation manner of the fifth aspect, the resource scheduling information further includes: corresponding to the second time block. a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; The physical parameter of the first non-space time stream indicates a coded modulation mode of the MAC frame carried by the first time block;

The parsing, by the AP, the MAC frame carried by the second time block includes:

Parsing, by the AP, the MAC frame carried by the second time block according to the physical parameter of the second non-empty time stream;

The parsing, by the AP, the MAC frame carried by the first time block includes:

The AP parses the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.

With reference to the fifth aspect of the embodiment of the present invention or the first implementation manner of the fifth aspect, in a third implementation manner of the fifth aspect of the embodiment, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation;

The parsing, by the AP, the MAC frame carried by the first time block includes:

Parsing, by the AP, the first time block according to physical parameters of the first non-empty time stream MAC frame;

The AP parses the MAC frame carried by the second time block according to the physical parameter of the second non-empty time stream.

With reference to any one of the first implementation manner of the fifth aspect of the embodiment, the second implementation manner of the fifth aspect, and the third implementation manner of the fifth aspect, the fourth aspect of the fifth aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to any one of the first implementation manner of the fifth aspect of the embodiment, the second implementation manner of the fifth aspect, and the third implementation manner of the fifth aspect, the fifth aspect of the fifth aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

A sixth aspect of the embodiments of the present invention provides a data transmission method, including:

The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

Receiving, by the AP, a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

With reference to the sixth aspect of the embodiments of the present invention, in a first implementation manner of the sixth aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the sixth aspect of the embodiment or the first implementation manner of the sixth aspect, in a second implementation manner of the sixth aspect, the data packet further includes second indication information, the second The indication information is used to indicate a physical parameter of the non-empty time stream of the first time block and/or the second time block, where the physical parameter of the non-space time stream is used to indicate a coded modulation mode of the corresponding time block. .

With reference to the second implementation manner of the sixth aspect of the embodiment of the present invention, in a third implementation manner of the sixth aspect of the embodiment, the second indication information indicates a non-empty time flow of the first time block. The second time block adopts a physical parameter of a preset non-empty time stream; and when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the A time block uses the physical parameters of the preset non-space time stream.

With reference to any one of the first implementation manner of the sixth aspect of the embodiment, the second implementation manner of the sixth aspect, and the third implementation manner of the sixth aspect, the fourth aspect of the sixth aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to any one of the first implementation manner of the sixth aspect of the embodiment, the second implementation manner of the sixth aspect, and the third implementation manner of the sixth aspect, the fifth aspect of the sixth aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

A seventh aspect of the embodiments of the present invention provides a station STA, including:

a transceiver module, configured to receive a data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, where the resource scheduling information includes a physical parameter of a space-time stream, and the resource scheduling information further includes a first indication Information, the first indication information is used to indicate the number of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband;

a processing module, when the first indication information indicates that the data field includes a first time block and a second And the first time block and the second time block are both transmitted by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry media connection The control MAC module is configured to parse the MAC frame carried by the first time block and the second time block respectively.

With reference to the seventh aspect of the embodiments of the present invention, in a first implementation manner of the seventh aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols; The transceiver module is also used to:

Receiving the first time block and the second time block according to physical parameters of the space-time stream;

The processing module is further configured to: collect data of the first time block according to the preset number or the indicated number of OFDM symbol lengths;

The processing module is further configured to: calculate the OFDM occupied by the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths Symbol length

The processing module is further configured to: collect data of the second time block according to an OFDM symbol length occupied by the second time block.

With reference to the seventh aspect of the embodiment of the present invention or the first implementation manner of the seventh aspect, in the second implementation manner of the seventh aspect of the embodiment, the resource scheduling information further includes: corresponding to the second time block a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; The physical parameter of the first non-space time stream indicates a coded modulation mode of the MAC frame carried by the first time block;

The processing module is specifically configured to:

Parsing the MAC frame carried by the second time block according to the physical parameter of the second non-spacetime stream;

The processing module is further specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.

With reference to the seventh aspect of the embodiment of the present invention, or the first implementation manner of the seventh aspect, in the third implementation manner of the seventh aspect of the embodiment, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation;

The processing module is specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the first non-empty time stream;

The processing module is further specifically configured to:

And parsing the MAC frame carried by the second time block according to the physical parameter of the second non-spacetime stream.

With reference to the first implementation manner of the seventh aspect of the embodiment, the second implementation manner of the seventh aspect, and the third implementation manner of the seventh aspect, the fourth aspect of the seventh aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to any one of the first implementation manner of the seventh aspect of the embodiment, the second implementation manner of the seventh aspect, and the third implementation manner of the seventh aspect, the fifth aspect of the seventh aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

An eighth aspect of the embodiments of the present invention provides a station STA, including:

The transceiver module is configured to receive a trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used by Instructing the STA to send the first time block and the second time block to the same orthogonal frequency division multiple access OFDMA subband to the AP;

The transceiver module is further configured to send a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, and the first time block and the second time block The time blocks are all transmitted by using the same physical parameters of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

And a processing module, configured to control the transceiver module to receive a trigger frame sent by the AP, and control the transceiver module to send a data packet to the AP.

With reference to the eighth aspect of the embodiments of the present invention, in a first implementation manner of the eighth aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the eighth aspect of the embodiment or the first implementation manner of the eighth aspect, in the second implementation manner of the eighth aspect, the resource scheduling information further includes: corresponding to the second time block. a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; The physical parameter of the first non-space time stream indicates a coded modulation mode of the MAC frame carried by the first time block.

With reference to the eighth aspect of the embodiment or the first implementation manner of the eighth aspect, in the third implementation manner of the eighth aspect of the embodiment, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation.

With reference to the first implementation manner of the eighth aspect of the embodiment, the second implementation manner of the eighth aspect, and the third implementation manner of the eighth aspect, the fourth aspect of the eighth aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to any one of the first implementation manner of the eighth aspect of the embodiment, the second implementation manner of the eighth aspect, and the third implementation manner of the eighth aspect, the eighth aspect of the embodiment of the present invention In the five implementation manners, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

A ninth aspect of the embodiment of the present invention provides a station STA, including:

a transceiver module, configured to receive a trigger frame sent by an access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of a space-time stream;

The transceiver module is further configured to send a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time The block and the second time block respectively carry a media access control MAC frame;

With reference to the ninth aspect of the embodiments of the present invention, in a first implementation manner of the ninth aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the ninth aspect of the embodiment of the present invention or the first implementation manner of the ninth aspect, in the second implementation manner of the ninth aspect of the embodiment, the data packet further includes second indication information, the second The indication information is used to indicate a physical parameter of the non-empty time stream of the first time block and/or the second time block, where the physical parameter of the non-space time stream is used to indicate a coded modulation mode of the corresponding time block. .

With reference to the second implementation manner of the ninth aspect of the embodiment of the present invention, in a third implementation manner of the ninth aspect of the embodiment, the second indication information indicates a non-empty time flow of the first time block. The second time block adopts a physical parameter of a preset non-empty time stream; and when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the A time block uses the physical parameters of the preset non-space time stream.

With reference to the first implementation manner of the ninth aspect of the embodiment, the second implementation manner of the ninth aspect, and the third implementation manner of the ninth aspect, the ninth aspect of the embodiment of the present invention In the four implementation manners, the occupying the preset number of OFDM symbols by the first time block includes:

With reference to the first implementation manner of the ninth aspect of the embodiment, the second implementation manner of the ninth aspect, and the third implementation manner of the ninth aspect, the fifth aspect of the ninth aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

A tenth aspect of the embodiment of the present invention provides an access point AP, including:

a processing module, configured to set resource scheduling information in a data packet that needs to be sent to the station STA, where the data packet includes a data field, where the resource scheduling information includes first indication information, where the first indication information is used to indicate each The number of time blocks included in the data field on the orthogonal frequency division multiple access OFDMA subband;

a transceiver module, configured to send the data packet and the resource scheduling information to the STA, so that the STA receives the first time according to physical parameters of the space-time stream according to physical parameters of the space-time stream A block and the second time block.

With reference to the tenth aspect of the embodiments of the present invention, in a first implementation manner of the tenth aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the tenth aspect of the embodiment of the present invention or the first implementation manner of the tenth aspect, in the second implementation manner of the tenth aspect of the embodiment, the resource scheduling information further includes: corresponding to the second time block. a physical parameter of the second non-spacetime stream, where the physical parameter of the second non-spacetime stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block, where the first time block adopts a preset Non The physical parameter of the space-time stream indicates the coded modulation mode of the MAC frame carried by the first time block.

With reference to the tenth aspect of the embodiment of the present invention or the first implementation manner of the tenth aspect, in a third implementation manner of the tenth aspect of the embodiment, the resource scheduling information further includes a physical parameter and a physical parameter of the second non-empty time stream, the physical parameter of the first non-empty time stream corresponding to the first time block, the physical parameter of the second non-empty time stream and the second time Corresponding to, the physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate coding of a MAC frame carried by the first time block and the second time block Modulation.

With reference to the first implementation manner of the tenth aspect of the embodiment, the second implementation manner of the tenth aspect, and the third implementation manner of the tenth aspect, the fourth aspect of the tenth aspect of the embodiment of the present invention In an implementation manner, the occupying, by the first time block, a preset number of OFDM symbols includes:

With reference to the first implementation manner of the tenth aspect of the embodiment, the second implementation manner of the tenth aspect, and the third implementation manner of the tenth aspect, the fifth aspect of the tenth aspect of the embodiment of the present invention In an implementation manner, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

An eleventh embodiment of the present invention provides an access point AP, including:

a transceiver module, configured to send a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate the The STA needs to send the first time block and the second time block to the AP in the same orthogonal frequency division multiple access OFDMA subband;

The transceiver module is further configured to receive a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, and the first time block and the first time block The two time blocks are all transmitted by using the same physical parameters of the space-time stream, the first time The block and the second time block respectively carry a media access control MAC frame;

The processing module is configured to parse the MAC frame carried by the first time block and the second time block respectively.

With reference to the eleventh embodiment of the present invention, in a first implementation manner of the eleventh embodiment of the present disclosure, the first time block occupies a preset number or an indicated number of OFDM symbols; to:

Receiving data of the first time block according to the preset number or the indicated number of orthogonal frequency division multiplexing OFDM symbol lengths;

The processing module is further configured to calculate, according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths, the second time block is occupied. OFDM symbol length;

With reference to the first implementation of the eleventh or eleventh aspect of the present invention, in a second implementation manner of the eleventh aspect of the embodiments, the resource scheduling information further includes the second a physical parameter of the second non-empty time stream corresponding to the time block, where the physical parameter of the second non-space time stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block Determining, by using a preset physical parameter of the first non-space time stream, a coding and modulation mode of the MAC frame carried by the first time block;

The processing module is specifically configured to:

The processing module is further specifically configured to:

With reference to the first implementation of the eleventh or eleventh aspects of the embodiments of the present invention, in a third implementation manner of the eleventh embodiment of the present disclosure, the resource scheduling information further includes the first non-empty a physical parameter of the current flow and a physical parameter of the second non-empty flow, the physical parameter of the first non-empty flow corresponding to the first time block, the physical parameter of the second non-empty flow and the The second time block corresponds, The physical parameters of the first non-empty time stream and the physical parameters of the second non-space time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block;

The processing module is specifically configured to:

The processing module is further specifically configured to:

With reference to the first implementation manner of the eleventh aspect of the embodiment, the second implementation manner of the eleventh aspect, and the third implementation manner of the eleventh aspect, in the eleventh embodiment of the present invention In a fourth implementation manner of the aspect, the occupying, by the first time block, the preset number of OFDM symbols includes:

With reference to the first implementation manner of the eleventh aspect of the embodiment, the second implementation manner of the eleventh aspect, and the third implementation manner of the eleventh aspect, in the eleventh embodiment of the present invention In a fifth implementation manner of the aspect, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

A twelfth aspect of the embodiments of the present invention provides an access point AP, including:

a transceiver module, configured to send a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of a space-time stream;

The transceiver module is further configured to receive a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes a first time block and a second time block, the first time block and the The second time block is transmitted by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

And a processing module, configured to control the transceiver module to send a trigger frame to the STA, and control the transceiver module to receive the data packet sent by the STA.

With reference to the twelfth aspect of the embodiments of the present invention, in a first implementation manner of the twelfth aspect, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

With reference to the twelfth aspect or the first implementation of the twelfth aspect, in the second implementation manner of the twelfth aspect, the data packet further includes second indication information, where The second indication information is used to indicate a physical parameter of the non-empty time stream of the first time block and/or the second time block, where the physical parameter of the non-empty time stream is used to indicate the corresponding time block. Code modulation method.

With reference to the second implementation manner of the twelfth aspect of the embodiments of the present invention, in a third implementation manner of the twelfth aspect, the second indication information indicates that the first time block is non-empty When the physical parameter of the current flow, the second time block adopts a physical parameter of a preset non-empty time flow; when the second indication information indicates a physical parameter of the non-empty time flow of the second time block, The first time block uses the physical parameters of the preset non-space time stream.

In combination with the first implementation manner of the twelfth aspect of the embodiment of the present invention, the second implementation manner of the twelfth aspect, and the third implementation manner of the twelfth aspect, in the twelfth embodiment of the present invention In a fourth implementation manner of the aspect, the occupying, by the first time block, the preset number of OFDM symbols includes:

In combination with the first implementation manner of the twelfth aspect of the embodiment of the present invention, the second implementation manner of the twelfth aspect, and the third implementation manner of the twelfth aspect, in the twelfth embodiment of the present invention In a fifth implementation manner of the aspect, the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

In the data transmission method provided by the embodiment of the present invention, the data packet sent by the AP to the STA includes resource scheduling information and a data field, where the resource scheduling information includes first indication information, and the first indication information indicates the data field. The first time block and the second time block are respectively carried, and the first time block and the second time block respectively carry MAC frames, and are all transmitted by physical parameters of the same space-time flow, and the STA parses the first time block. a MAC frame carried by the second time block, respectively. In this way, different MAC frames are transmitted in the same sub-band, which improves the data interaction efficiency between the AP and the STA, and reduces the overhead of the system.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic diagram of an embodiment of a method for data transmission according to an embodiment of the present invention;

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

FIG. 3 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

4 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 7 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 12 is a schematic diagram of another embodiment of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 13 is a schematic diagram of an embodiment of a station STA according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of another embodiment of a station STA according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of another embodiment of a station STA according to an embodiment of the present invention;

FIG. 16 is a schematic diagram of an embodiment of an access point AP according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of another embodiment of an access point AP according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of another embodiment of an access point AP according to an embodiment of the present invention;

FIG. 19 is a schematic diagram of another embodiment of a station STA according to an embodiment of the present invention; FIG.

FIG. 20 is a schematic diagram of another embodiment of an access point AP according to an embodiment of the present invention.

detailed description

The embodiment of the invention combines the characteristics of the acknowledgement frame to design a data packet with a relatively simplified resource scheduling indication. Control frames such as Acknowledgement (ACK) frame and Block ACK (BA) frame have the following characteristics:

1. A relatively robust transmission mode is required. Generally, it needs to work under the MCS with a low packet error rate. Since the frame length of the frame is small, the number of symbols required for transmission is not large.

2. If the parameters such as the number of streams and the MCS are relatively fixed, the resource block size occupied by the space stream may be relatively fixed, and no additional resources may be required to indicate the number of symbols occupied by the number of symbols.

Based on the above characteristics, the embodiment of the present invention designs the data packet structure by first dividing the data portion into a first time block and a second time block, and each time block does not require a separate efficient short training sequence (High Efficient- Short Training Field (English: abbreviation: HE-STF) and High Efficient-Long Training Field (HE-LTF), but share HE-STF and HE-LTF. Because the HE-STF and the HE-LTF are shared, the first time block and the second time block need to adopt the same NSTS, Beamforming (BF), and Space-Time Block Coding (Space-Time Block Coding, English abbreviation: STBC) physical parameters of the space-time flow, otherwise a HE-STF and a HE-LTF cannot accurately complete the automatic gain control of the first time block and the second time block (Automatic Gain Control, English abbreviation: AGC) With channel estimation.

The embodiment of the invention discloses a method and a device for data transmission. An embodiment of the data transmission method provided by the present invention is described in detail below with reference to FIG. 2 .

In the embodiment of the present invention, the data transmission method includes:

101. The station STA receives a data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, where the resource scheduling information includes physical parameters of a space-time stream, where the resource The scheduling information further includes first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband;

The STA and the AP perform data exchange by transmitting data packets to each other. In the data packet sent by the AP to the STA, the data packet needs to include a data field for transmitting data information, and needs to be included for indicating the location. The resource scheduling information of the data field. The physical parameters of the space-time stream included in the resource scheduling information include parameters such as space-time stream number NSTS, beamforming BF, and space-time block code STBC, and are used to indicate a transmission form of the data field, so that The STA can receive the data field according to physical parameters of the space-time stream;

The data field is composed of a time block. In the embodiment of the present invention, the data field may be composed of multiple time blocks. Therefore, the resource scheduling information needs to include first indication information, where the first indication information is used. Determining, by the number of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband, to enable the STA to receive different time blocks on the data field according to the first indication information .

102. When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block both adopt the same physicality of the space-time stream. The parameter is transmitted, where the first time block and the second time block respectively carry a media access control MAC frame, and the STA parses the MAC frame carried by the first time block and the second time block respectively;

When the first time block and the second time block are included in the data field, the first time block and the second time block must be transmitted by using physical parameters of the same space-time stream, so that the first time can be The block and the second time block accurately complete the automatic gain control AGC and channel estimation. The first time block and the second time block respectively carry a MAC frame, and the MAC frame may be a different type of frame, such as an acknowledgement frame or a data frame. Since the types of the MAC frames carried by the first time block and the second time block may be different, the content and role of the MAC frame are also different. For example, if the MAC frame is an acknowledgment frame, it is used to indicate that the AP has successfully received the data sent by the STA. The STA needs to parse the MAC frame carried by the first time block and the second time block respectively, because the STA and the AP are to continue to perform high-level data interaction.

In the embodiment of the present invention, the data packet sent by the AP to the STA includes resource scheduling information and a data field, where the resource scheduling information includes first indication information, where the first indication information indicates that the data field includes a first time block and a first time block. Two time blocks, the first time block and the second time block respectively carrying a MAC The frame is transmitted by using the physical parameters of the same space-time stream, and the STA parses the MAC frame carried by the first time block and the second time block respectively. In this way, different MAC frames are transmitted in the same sub-band, which improves the data interaction efficiency between the AP and the STA, and reduces the overhead of the system.

The foregoing embodiment describes that the first time block and the second time block respectively carry a MAC frame. In actual applications, the resource scheduling information may further include physical parameters of the non-empty time stream to perform MAC frame included in the time block. An indication, wherein the OFDM symbol length occupied by the first time block may also notify the STA by using a preset or an indication, which is specifically described below. Referring to FIG. 2, another implementation of the data transmission method in the embodiment of the present invention is shown. Examples include:

201. The station STA receives the data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, where the resource scheduling information includes physical parameters of the space-time stream, and the resource scheduling information further includes the first indication information. The first indication information is used to indicate the number of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband;

The details are as described in S101.

202. When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block both adopt the same physicality of the space-time stream. The parameter is transmitted, where the first time block and the second time block respectively carry a media access control MAC frame, where the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM a symbol, the STA receives the first time block and the second time block according to physical parameters of the space-time stream;

The first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols. Since the STA collects data of the time block, it needs to perform charging according to the length of the time block. In the prior art, since only one time block is included in the data field, the STA can obtain the length of the time block by acquiring the total length of the data field; and the data field in the embodiment of the present invention may include more than one data block. Therefore, it is necessary to set a preset value or a separate indication for the length of the first time block, so that the STA can collect data of the first time block according to a preset number or an indication number.

Specifically, the first time block occupies a preset number of OFDM symbols, where the first time block occupies a fixed OFDM symbol that the AP pre-sets the first time block by default. Number of numbers. That is, before the AP performs data interaction with the STA, the AP performs protocol agreement with the STA or presets in advance, and both parties can know the OFDM length of the first time block in advance.

Or the first time block occupies a preset number of OFDM symbols, where the first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size of the data field. When there is more than one time block in a subband, the number of OFDM symbols occupied by the first time block by time may correspond to the size of the subband in the frequency domain. For example, when the size of the subband in the frequency domain is large, such as when a resource block occupies 20 MHz, the corresponding number of symbols in the time domain is small, such as 1 OFDM symbol; when the size of the subband in the frequency domain is smaller Hours, if a resource block occupies only 26 subcarriers, the corresponding number of symbols in the time domain is larger, such as 9 OFDM symbols. In summary, the subband size has an accurate mapping relationship with the number of OFDM symbols occupied by the first time block. Therefore, when the STA reads the size of the subband in the frequency domain of the resource block, the OFDM occupied by the first time block can be derived. The number of symbols.

Or the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

And the first time block occupies the indicated number of OFDM symbols, where the first time block occupies the number of OFDM symbols of the length indicated by the second indication information. Optionally, the second indication information may be a field Seg (1) Alloc (Segment (1) Allocation, allocation of (time) block 1), and the second indication information may explicitly indicate the first time The length of the OFDM symbol occupied by the block; the second indication information may also correspond to the subband size in the frequency domain. For example, if the second indication information field uses 2 bits to indicate the number of OFDM symbols, when the subband size is larger, such as 20 MHz, 00 represents 1 symbol, 01 represents 2 symbols; if the subband size Smaller, such as 26 subcarriers, then 00 represents 4 symbols and 01 represents 8 symbols. In addition, the function of indicating whether the data field is a multi-segment Multi Seg may be implemented by whether the value of the Seg(1)Alloc is 0, that is, Seg(1)Alloc is 0, indicating that the number of OFDM symbols occupied by the first time block is 0. That is, if the first time block does not exist, it means that there is only one second time block in the sub-band.

It should be noted that, in the embodiment of the present invention, the first time block may include one or more time blocks, and the one or more time blocks included in the first time block are all preset numbers or indicated numbers. The length enables the STA to accurately collect data within the first time block.

203. The STA collects data of the first time block according to the preset number or the indicated number of OFDM symbol lengths.

After receiving the data packet, the STA can receive the data of the first time block according to a preset number or an indicated number of OFDM symbol lengths.

204. The STA calculates, according to the total length of the obtained data field, the preset number of the first time block, or the indicated number of OFDM symbol lengths, the OFDM symbol length occupied by the second time block.

When the length of the first time block is a preset number or an indication number, the STA can determine the length of the first time block, and then subtract the first time according to the total length of the acquired data field. The length of the block gives the OFDM symbol length of the second time fast.

It should be noted that the OFDM symbol length occupied by the second time block may also be indicated by one of the resource scheduling information sent by the AP.

205. The STA collects data of the second time block according to an OFDM symbol length occupied by the second time block.

After obtaining the length of the second time block, the STA can collect data of the second time block according to the length of the second time block.

206. The resource scheduling information further includes a physical parameter of the second non-empty time stream corresponding to the second time block, where the physical parameter of the second non-empty time stream is used to indicate that the second time block carries a coded modulation mode of the MAC frame; the first time block uses a preset physical parameter of the first non-space time stream to indicate a coded modulation mode of the MAC frame carried by the first time block; The physical parameter of the second non-time-time stream parses the MAC frame carried by the second time block;

After the STA receives the MAC frame carried in the first time block and the second time block, in order to perform accurate data interaction with the AP, the MAC frame needs to be parsed to obtain detailed indication content in the MAC frame. In the case of parsing the MAC frame, the coded modulation mode of the MAC is required. Therefore, the resource scheduling information may further include a physical parameter of the second non-empty time stream corresponding to the second time block, where the second non-empty time stream The physical parameter is used to indicate the coding and modulation mode of the MAC frame carried by the second time block, and the physical parameters of the non-empty time stream may include a Modulation and Coding Scheme (MCS) and a low-density parity check. Low Density Parity Code (LDPC). In this way, the STA can be made according to the second non-empty time stream The parameter parses the MAC frame carried by the second time fast.

For the physical parameters of the non-empty time stream carried by the first block, a preset MCS and LPDC may be used. For example, for the modulation and coding strategy MCS, MCS0 can always be adopted; for the coding mode, for the case of small size in the frequency domain, the Binary Convolution Code (BCC) coding mode is adopted by default, that is, LDPC=0, and for larger sizes in the frequency domain, the LDPC coding mode is adopted by default, that is, LDPC=1.

Optionally, the MAC frame carried by the first time block may also be explicitly indicated by physical parameters of the first non-empty time stream. That is, the resource scheduling information further includes a physical parameter of the first non-empty time stream and a physical parameter of the second non-empty time stream, where the physical parameter of the first non-empty time stream corresponds to the first time block. In this way, the physical parameter of the first non-empty time stream explicitly indicates the MCS or the LDPC of the MAC frame carried by the first time block. Optionally, the physical parameter of the first non-empty time stream may also indicate only the A modulation coding parameter of a MAC frame carried by a time block, such as only indicating MCS, and LDPC adopting default parameters.

207. The STA parses, according to the physical parameter of the preset first non-empty time stream, the MAC frame carried by the first time block.

Optionally, when the resource scheduling information further includes a physical parameter of the first non-empty time stream corresponding to the first time block, the STA may be configured according to the physical parameter of the first non-empty time stream. Parsing the MAC frame carried by the first time block.

In the embodiment of the present invention, the length of the OFDM symbol occupied by the first time block may be a preset length, so that the resource scheduling information sent by the AP may not need to indicate the length of the OFDM symbol occupied by the first time block, thereby saving The length of the first time block is the length indicated by the second indication information in the resource scheduling information, so that the length of the first time block is more flexible. The first time block may adopt a preset physical parameter of the non-empty-time stream, so that the resource scheduling information sent by the AP may not be used to indicate the physicality of the non-empty-time stream of the MAC frame carried by the first time block. The parameters also save the overhead of the system.

Referring to FIG. 3, another embodiment of a method for data transmission in an embodiment of the present invention includes:

301. The station STA receives a trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate The STA needs to be in the same orthogonal frequency division multiple access OFDMA subband to the AP Sending the first time block and the second time block;

The foregoing embodiment describes that an AP sends a data packet to a STA to implement downlink transmission of transmitting multiple MAC frames in the same subband. In the uplink transmission, the AP needs to send a trigger frame to the STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream that the STA needs to use when performing uplink transmission. The resource scheduling information further includes first indication information, and the first indication information needs to indicate that the STA needs to send the first time block and the second time block to the AP on the same OFDMA subband. It should be noted that, since the AP only includes a physical parameter of a set of space-time flows in the trigger frame sent to the STA, the protocol stipulates that the STA needs to send the first time block when performing uplink transmission. The same physical parameters of the space-time stream are used with the second time block.

302. The STA sends a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, where the first time block and the second time block are both And transmitting, by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

The content is similar to the content of the AP sending the data packet to the STA described in S102, and is not described here.

In the embodiment of the present invention, the AP sends a trigger frame to the STA, where the trigger frame includes a physical parameter of the space-time stream, and the trigger frame further includes first indication information, where the first indication information indicates that the STA needs to The AP sends the first time block and the second time block, so that the STA uses the same physical parameters of the space-time stream to the first time block and the second in the process of sending the data packet to the AP. The time block is transmitted, and the first time block and the second time block respectively carry a MAC frame, which implements uplink transmission of multiple MAC frames in the same sub-band, thereby improving data interaction efficiency between the AP and the STA, and reducing The overhead of the system.

The foregoing embodiment describes that the data packet sent by the STA to the AP includes a first time block and a second time block, where the first time block and the second time block respectively carry a MAC frame. In an actual application, the AP The OFDM symbol length occupied by the first time block may also be notified to the STA, so that the AP can receive the MAC frame carried by the first time block and the second time block. The AP also needs to parse the received MAC frame. Therefore, when the AP sends the trigger frame to the STA, the resource scheduling request included in the trigger frame may further include a physical parameter of the non-empty time stream, and is used for Instructing the STA to transmit the coding and modulation modes used by the first time block and the second time block. The following is a detailed description. Referring to FIG. 4, another embodiment of the data transmission method in the embodiment of the present invention includes:

401. The station STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate The STA needs to send, to the AP, a first time block and a second time block in the same orthogonal frequency division multiple access OFDMA subband; the resource scheduling information further includes a second non-empty corresponding to the second time block. a physical parameter of the time stream, the physical parameter of the second non-space time stream is used to indicate a coded modulation mode of the MAC frame carried by the second time block; and the first time block adopts a preset first non-empty The physical parameter of the current flow indicates a coding and modulation mode of the MAC frame carried by the first time block;

Optionally, the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, physical parameters of the first non-empty time stream and the first time block Correspondingly, the physical parameter of the first non-empty time stream is used to indicate a coded modulation mode of the MAC frame carried by the first time block.

The content of the first time block and the second time block are similar to those of the STA described in S206 according to the physical parameters of the non-empty time stream, and are not described herein.

402. The STA sends a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, where the first time block and the second time block are both And transmitting, by using the same physical parameter of the space-time stream, the first time block and the second time block respectively carrying a media access control MAC frame, where the first time block occupies a preset number or Indicating a number of orthogonal frequency division multiplexing OFDM symbols;

Specifically, the first time block occupies a preset number of OFDM symbols, where the first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default.

Or the first time block occupies a preset number of OFDM symbols, where the first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size of the data field.

The first time block occupies the indicated number of OFDM symbols, which may be: the first time block occupies The number of OFDM symbols of the length indicated by the second indication information.

The details are as described in S202.

Referring to FIG. 5, another embodiment of a method for data transmission in an embodiment of the present invention includes:

501. The station STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream.

When the STA needs to perform the uplink data transmission, the STA first needs to obtain the physical parameter of the space-time stream used by the uplink data field, so the AP needs to send the trigger frame to the STA first, and the trigger frame includes The physical parameters of the space time stream.

502. The STA sends a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field; when the data is When the field includes the first time block and the second time block, the first time block and the second time block are both transmitted using the same physical parameters of the space-time stream, the first time block and the first time block The second time block carries a media access control MAC frame respectively;

When the trigger frame sent by the AP does not include the number of time blocks included in the data field indicating that the STA needs to transmit, the STA may autonomously determine the number of time blocks included in the data field to be transmitted. When the STA determines the number of time blocks included in the data field that needs to be sent, the number of time blocks included in the data field sent by the STA to the AP is indicated by sending the first indication information.

The details are as described in S302.

In the embodiment of the present invention, the same space-time stream parameter is used for transmitting and receiving in the same sub-band with more than one time block, thereby realizing the time-reuse transmission mode under the condition of complicated implementation and low overhead, and improving the system. Transmission efficiency and throughput. And combined with the second-order indication, realized by The STA determines the number of time blocks and the physical parameters of the non-empty time stream of each time block, so as to avoid waste of resources because the AP does not know the cache of the STA and the channel condition.

The above embodiment describes that the second indication information indicates physical parameters of the non-empty time stream of the first time block and/or the second time block. In a practical application, when the second indication information only indicates the logistics parameter of the non-empty time stream of one time block, the physical parameter of the non-empty time stream of the other time block adopts a preset non-empty time flow. Physical parameters are described in detail below.

601. The station STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream.

The details are as described in S501.

602. The STA sends a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field; when the data is When the field includes the first time block and the second time block, the first time block and the second time block are both transmitted using the same physical parameters of the space-time stream, the first time block and the first time block The second time block carries a media access control MAC frame, where the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols;

Or the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

The details are as described in S202.

The first time block occupies the indicated number of OFDM symbols, and the first time block occupies the number of OFDM symbols of the length indicated by the third indication information.

The content is similar to the content of the OFDM symbol data of the length indicated by the second indication information in the first time block described in S402, and is not described herein.

Optionally, the data packet further includes second indication information, where the second indication information is used to indicate physical parameters of the non-empty time stream of the first time block and/or the second time block, Non-empty time flow The physical parameter is used to indicate a coded modulation mode of the corresponding time block; when the second indication information indicates a physical parameter of the non-empty time stream of the first time block, the second time block adopts a preset a physical parameter of the non-empty time stream; when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the first time block adopts a preset physical parameter of the non-empty time stream ;

The STA can autonomously determine the physical parameters of the non-empty time stream and carry it through one or more High Efficient-Signal Field-C (English: abbreviation: HE-SIG-C). The AP indicates the location of the resource in the frequency domain of each STA by using a trigger frame, such as the location and size of the subband on the frequency domain, and indicates the spatial stream. Then, the STA can know the frequency domain and spatial position occupied by the transmission data when transmitting in the uplink. For the non-time-time flow logistics parameters, such as MCS, LDPC and other parameters, it can be carried by one or more HE-SIG-C. In addition, the transmission of several time blocks can also be indicated by HE-SIG-C/C1, so that the number of transmission time blocks can be determined autonomously.

In the embodiment of the present invention, the STA completes the indication of a part of the resource scheduling information by using the high-efficiency signaling field HE-SIG-B field or the trigger frame trigger frame, and completes the non-empty time of the LDPC, the MCS, etc. through one or more HE-SIG-Cs. An indication of the physical parameters of the flow, therefore, the inventive scheme is referred to as a second order indication of the molecular band. In this way, it can be determined by the STA whether the uplink performs transmission of multiple MAC frames.

The HE-SIG-B/trigger frame trigger frame carries resource scheduling information related to frequency domain location and space-time flow, while HE-SIG-C carries parameter information unrelated to space-time flow. The indication of multiple time blocks may exist in the HE-SIG-B/trigger frame or may be carried in one or more HE-SIG-Cs. The field Seg(1)Alloc may also be selectively present in the data packet and may be used indirectly to indicate whether more than one time block exists. If only one HE-SIG-C exists, parameters such as MCS and LDPC of the two time blocks are simultaneously indicated.

It should be noted that the first time block is not limited to being one time block, the first time block may be multiple, the second time block is not limited to being one time block, and the second time block is also There may be multiple, the second indication indication information is not limited to one piece of indication information, and the second indication information may be indication information corresponding to the first time block and/or the second time block.

The physical parameters of the non-empty time stream on a certain time block may adopt a preset default value; if there are multiple HE-SIG-Cs, each time is indicated by HE-SIG-C before each time block respectively. The physical parameters of the non-empty-time stream such as MCS and LDPC of the block, in addition, HE-SIG-C can also be used to carry the physical parameters. The parameter of the size of the time block. The specific content is similar to the content of the physical parameters of the non-empty-time stream such as the preset MCS and LDPC in the first time block described in S206, and is not described here.

In the embodiment of the present invention, the length of the OFDM symbol occupied by the first time block may be a preset length, so that the resource scheduling information sent by the AP may not need to indicate the length of the OFDM symbol occupied by the first time block, thereby saving The length of the first time block is the length indicated by the third indication information in the resource scheduling information, so that the length of the first time block is more flexible. The first time block or the second time block may adopt a preset physical parameter of the non-empty time stream, so that the resource scheduling information sent by the AP may not be carried in the first time block or the second time block. The physical parameters of the non-empty-time stream of the MAC frame also save the overhead of the system.

Referring to FIG. 7, another embodiment of the data transmission method in the embodiment of the present invention includes:

701. The access point AP sets resource scheduling information in a data packet that needs to be sent to the station STA, where the data packet includes a data field, where the resource scheduling information includes first indication information, where the first indication information is used to indicate each The number of time blocks included in the data field on the orthogonal frequency division multiple access OFDMA subband;

The details are as described in S101.

702. When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block both adopt the same physicality of the space-time stream. The parameter is transmitted, where the first time block and the second time block respectively carry a media access control MAC frame; the AP sends the data packet and the resource scheduling information to the STA, so that the Receiving, by the physical parameter of the space-time stream, the first time block and the second time block according to physical parameters of the space-time stream;

The details are as described in S102.

Referring to FIG. 8, another embodiment of a method for data transmission in an embodiment of the present invention includes:

801. The access point AP sets resource scheduling information in a data packet that needs to be sent to the station STA, where the data packet includes a data field, where the resource scheduling information includes first indication information, where the first indication information is used to indicate that each The number of time blocks included in the data field on the orthogonal frequency division multiple access OFDMA subband;

The details are as described in S101.

802. When the first indication information indicates that the data field includes a first time block and a second time And the first time block and the second time block are both transmitted by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry media access Controlling a MAC frame; the AP transmitting the data packet and the resource scheduling information to the STA, so that the STA receives the first parameter according to physical parameters of the space-time stream according to physical parameters of the space-time stream a time block and the second time block; the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols;

Specifically, the occupying the preset number of OFDM symbols by the first time block includes:

The details are as described in S202.

Optionally, the resource scheduling information further includes a physical parameter of the second non-empty time stream corresponding to the second time block, where the physical parameter of the second non-empty time stream is used to indicate the second time block The coded modulation mode of the carried MAC frame, wherein the first time block uses a preset physical parameter of the non-space time stream to indicate a coded modulation mode of the MAC frame carried by the first time block.

Optionally, the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, physical parameters of the first non-empty time stream and the first time block Correspondingly, the physical parameter of the second non-empty time stream is corresponding to the second time block, and the physical parameter of the first non-empty time stream and the physical parameter of the second non-empty time stream are respectively used to indicate And a coding and modulation manner of the MAC frame carried by the first time block and the second time block.

The details are as described in S206.

Referring to FIG. 9, another embodiment of a method for data transmission in an embodiment of the present invention includes:

901. The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information. The resource scheduling information includes a physical parameter of the space-time stream and first indication information, where the first indication information is used to indicate that the STA needs to send the first time to the AP in the same orthogonal frequency division multiple access OFDMA subband. Block and second time block;

The details are as described in S301.

902. The AP receives a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, the first time block and the second time block. The first time block and the second time block respectively carry a media access control MAC frame; the AP parses the first time block and the Decoding a MAC frame carried by the second time block respectively;

The content is similar to the content of the MAC frame carried by the STA in the first time block and the second time block, and is not described here.

Referring to FIG. 10, another embodiment of a method for data transmission in an embodiment of the present invention includes:

1001: The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate The STA needs to send the first time block and the second time block to the AP in the same orthogonal frequency division multiple access OFDMA subband;

The details are as described in S301.

1002: The AP receives a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, and the first time block and the second time block The first time block and the second time block respectively carry a media access control MAC frame; the first time block occupies a preset number or indication. a number of OFDM symbols; the AP receiving the first time block and the second time block according to the physical parameter according to the space-time stream;

The content is similar to the content of the first time block and the second time block according to the physical parameters of the space-time stream, and is not described herein.

1003. The AP collects data of the first time block according to the preset number or the indicated number of OFDM symbol lengths.

The details are similar to the data content of the first time block received by the STA described in S203 according to the preset number or the indicated number of OFDM symbol lengths, and details are not described herein.

1004. The AP calculates, according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths, the OFDM symbol length occupied by the second time block.

The content is calculated by using the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths. The OFDM symbol length is similar in content and will not be described here.

1005. The AP collects data of the second time block according to an OFDM symbol length occupied by the second time block.

The content is similar to the content of the data of the second time block that is received by the STA according to the OFDM symbol length occupied by the second time block, and is not described here.

1006. The resource scheduling information further includes a physical parameter of the second non-empty time stream corresponding to the second time block, where the physical parameter of the second non-empty time stream is used to indicate that the second time block is carried. a coded modulation mode of the MAC frame; the first time block uses a preset physical parameter of the first non-space time stream to indicate a coded modulation mode of the MAC frame carried by the first time block; The physical parameter of the second non-time-time stream parses the MAC frame carried by the second time block;

The content is similar to the content of the MAC frame carried by the STA in the second time block according to the physical parameter of the second non-empty time stream, and is not described here.

1007: The AP parses the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream;

The content is similar to the content of the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream, and is not described herein.

Referring to FIG. 11, another embodiment of a method for data transmission in an embodiment of the present invention includes:

The details are as described in S501.

1102. The AP receives a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field; When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, where the first time The inter-block and the second time block respectively carry a media access control MAC frame;

The details are as described in S502.

Referring to FIG. 12, another embodiment of a method for data transmission in an embodiment of the present invention includes:

1201: The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

The details are as described in S601.

1202: The AP receives a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field; When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time block and the The second time block carries a media access control MAC frame, where the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols;

The details are as described in S602.

Referring to FIG. 13, an embodiment of a station STA in the embodiment of the present invention includes:

The transceiver module 1301 is configured to receive a data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, where the resource scheduling information includes a physical parameter of the space-time stream, and the resource scheduling information further includes the first Instructing information, the first indication information is used to indicate a quantity of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband;

The details are as described in S101.

The processing module 1302, when the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block both adopt the same space time flow The physical parameter is transmitted, and the first time block and the second time block respectively carry a media access control MAC frame; the processing module 1302 is configured to parse the first time block and the second time block The MAC frames carried respectively;

The details are as described in S102.

Optionally, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols; the transceiver module 1301 is further configured to:

The details are as described in S202.

The processing module 1302 is further configured to: collect data of the first time block according to the preset number or the indicated number of OFDM symbol lengths;

The details are as described in S203.

The processing module 1302 is further configured to: calculate, according to the total length of the obtained data field and the preset number or the indicated number of OFDM symbol lengths occupied by the first time block, the occupied by the second time block OFDM symbol length;

The details are as described in S204.

The processing module 1302 is further configured to: collect data of the second time block according to an OFDM symbol length occupied by the second time block;

The details are as described in S205.

Optionally, the resource scheduling information further includes a physical parameter of the second non-empty time stream corresponding to the second time block, where the physical parameter of the second non-empty time stream is used to indicate the second time block a coded modulation mode of the carried MAC frame; the first time block uses a preset physical parameter of the first non-space time stream to indicate a coded modulation mode of the MAC frame carried by the first time block;

The processing module 1302 is specifically configured to:

The details are as described in S206.

The processing module 1302 is further specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream;

The details are as described in S207.

Optionally, the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, physical parameters of the first non-empty time stream and the first time block Correspondingly, the physical parameter of the second non-empty time stream is corresponding to the second time block, and the physical parameter of the first non-empty time stream and the physical parameter of the second non-empty time stream are respectively used to indicate a coding and modulation manner of the MAC frame carried by the first time block and the second time block;

The processing module 1302 is specifically configured to:

Parsing the MAC carried by the first time block according to the physical parameter of the first non-empty time stream frame;

The processing module 1302 is further specifically configured to:

The details are as described in S206 to S207.

Optionally, the occupying, by the first time block, a preset number of OFDM symbols includes:

Optionally, the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

For details, refer to S02.

Referring to FIG. 14, another embodiment of a station STA in the embodiment of the present invention includes:

The transceiver module 1401 is configured to receive a trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used by Instructing the STA to send the first time block and the second time block to the same orthogonal frequency division multiple access OFDMA subband to the AP;

The details are as described in S301.

The transceiver module 1401 is further configured to send a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, and the first time block and the first time block The second time block is transmitted by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

The details are as described in S302.

The processing module 1402 is configured to control the transceiver module 1401 to receive a trigger frame sent by the AP, and control the transceiver module 1401 to send a data packet to the AP.

Optionally, the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.

Optionally, the resource scheduling information further includes a physical parameter of the second non-empty time stream corresponding to the second time block, where the physical parameter of the second non-empty time stream is used to indicate the second time block a coded modulation mode of the carried MAC frame; the first time block uses a preset physical parameter of the first non-space time stream to indicate a coded modulation mode of the MAC frame carried by the first time block.

The details are as described in S401.

Referring to FIG. 15, another embodiment of a station STA in the embodiment of the present invention includes:

The transceiver module 1501 is configured to receive a trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

The details are as described in S501.

The transceiver module 1501 is further configured to send a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate that the data field is included The number of time blocks;

The details are as described in S502.

The processing module 1502 is configured to control the transceiver module to receive a trigger frame sent by the AP, and control the transceiver module to send a data packet to the AP.

Optionally, the data packet further includes second indication information, where the second indication information is used to indicate physical parameters of the non-empty time stream of the first time block and/or the second time block, The physical parameters of the non-empty time stream are used to indicate the coded modulation mode of the corresponding time block.

Optionally, when the second indication information indicates a physical parameter of the non-empty time stream of the first time block, the second time block adopts a physical parameter of a preset non-empty time stream; When the two indication information indicates the physical parameter of the non-empty time stream of the second time block, the first time block adopts a preset physical parameter of the non-empty time stream.

Optionally, the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

The details are as described in S602.

Referring to FIG. 16, an embodiment of an access point AP in an embodiment of the present invention includes:

The processing module 1602 is configured to set resource scheduling in a data packet that needs to be sent to the station STA. Information, the data packet includes a data field, the resource scheduling information includes first indication information, where the first indication information is used to indicate a time included in the data field on each orthogonal frequency division multiple access OFDMA subband The number of blocks;

The details are as described in S701.

The transceiver module 1601 is configured to send the data packet and the resource scheduling information to the STA, so that the STA receives the first according to physical parameters of the space-time stream according to physical parameters of the space-time stream. a time block and the second time block;

The details are as described in S702.

The details are as described in S802.

Referring to FIG. 17, another embodiment of an access point AP in the embodiment of the present invention includes:

The transceiver module 1701 is configured to send a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate The STA needs to send the first time block and the second time block to the AP in the same orthogonal frequency division multiple access OFDMA subband;

The details are as described in S901.

The transceiver module 1701 is further configured to receive a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, the first time block and the The second time block is transmitted by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

The processing module 1702 is configured to parse the MAC frame carried by the first time block and the second time block respectively.

The details are as described in S902.

Optionally, the first time block occupies a preset number or an indicated number of OFDM symbols; the processing module 1702 is further configured to:

The details are as described in S1003.

The processing module 1702 is further configured to calculate, according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths, the second time block Occupied OFDM symbol length;

The details are as described in S1004.

The processing module 1702 is further configured to: collect data of the second time block according to an OFDM symbol length occupied by the second time block.

The details are as described in S1005.

The processing module 1702 is specifically configured to:

The processing module 1702 is further specifically configured to:

The processing module 1702 is specifically configured to:

The processing module 1702 is further specifically configured to:

The details are as described in S1006 to S1007.

The details are as described in S1004 to 1005.

Referring to FIG. 18, another embodiment of the access point AP in the embodiment of the present invention includes:

The transceiver module 1801 is configured to send a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

The details are as described in S1101.

The transceiver module 1801 is further configured to receive a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate the number of time blocks included in the data field. ;

The details are as described in S1102.

The processing module 1802 is configured to control the transceiver module 1801 to send a trigger frame to the STA, and control the transceiver module 1801 to receive the data packet sent by the STA.

The details are as described in S1202.

FIG. 19 is another schematic structural diagram of a station STA according to an embodiment of the present invention. The STA may include at least one receiver 1901, at least one transmitter 1902, at least one processor 1903, and a memory 1904.

The STAs according to embodiments of the present invention may have more or fewer components than those shown in FIG. 19, may combine two or more components, or may have different component configurations or settings, and each component may include one Hardware, software, or a combination of hardware and software, including multiple signal processing and/or application specific integrated circuits.

Specifically, the transmitter 1902 can implement the functions of the transceiver module 1301 described in the embodiment of FIG. 13 and the transceiver module 1401 described in the embodiment of FIG. 14 and the transceiver module 1501 described in the embodiment of FIG. ;

The receiver 1901 can implement the functions of the transceiver module 1301 described in the embodiment of FIG. 13 and the transceiver module 1401 described in the embodiment of FIG. 14 and the transceiver module 1501 described in the embodiment of FIG. 15 for performing a receiving operation;

The processor 1903 can implement the functions of the processing module 1302 described in the embodiment of FIG. 13, the processing module 1402 in the embodiment of FIG. 14, and the processing module 1502 described in the embodiment of FIG.

FIG. 20 is another schematic structural diagram of an access point AP according to an embodiment of the present invention. The AP may include at least one receiver 2001, at least one transmitter 2002, at least one processor 2003, and a memory 2004.

The AP according to an embodiment of the present invention may have more or less components than those shown in FIG. 20, may combine two or more components, or may have different component configurations or settings, and each component may include one Hardware, software, or a combination of hardware and software, including multiple signal processing and/or application specific integrated circuits.

Specifically, the transmitter 2002 can implement the transceiver module 1601 described in the embodiment of FIG. The function of the transmitting and receiving module 1701 described in the embodiment of FIG. 17 and the transceiver module 1801 described in the embodiment of FIG. 18 for performing a transmitting operation;

The receiver 2001 can implement the functions of the transceiver module 1601 described in the embodiment of FIG. 16 and the transceiver module 1701 described in the embodiment of FIG. 17 and the transceiver module 1801 described in the embodiment of FIG. 18 for performing a receiving operation;

The processor 2003 can implement the functions of the processing module 1602 described in the embodiment of FIG. 16 and the processing module 1702 described in the embodiment of FIG. 17 and the processing module 1802 described in the embodiment of FIG. 18.

It should be noted that the device used in the description of the solution of the present invention is a base station eNB and a user equipment UE, and in actuality, the solution of the present invention is equally applicable to other devices in a peer network.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that The technical solutions are described as being modified, or equivalent to some of the technical features, and the modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A method of data transmission, characterized in that the method comprises:

The station STA receives the data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, the resource scheduling information includes physical parameters of the space-time stream, and the resource scheduling information further includes first indication information, where The first indication information is used to indicate the number of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband;

When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block are both performed by using the same physical parameters of the space-time stream. And transmitting, the first time block and the second time block respectively carry a media access control MAC frame; the STA parses the MAC frame carried by the first time block and the second time block respectively.
The method according to claim 1, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols; the method further comprises:

Receiving, by the STA, the first time block and the second time block according to physical parameters of the space-time stream;

The STA collects data of the first time block according to the preset number or the indicated number of OFDM symbol lengths;

Determining, by the STA, the OFDM symbol length occupied by the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths;

The STA collects data of the second time block according to an OFDM symbol length occupied by the second time block.
The method according to claim 1 or 2, wherein the resource scheduling information further comprises physical parameters of a second non-empty time stream corresponding to the second time block, and the second non-space time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block uses a physical parameter of the preset first non-empty time stream to indicate that the first time block carries Coded modulation mode of the MAC frame;

Receiving, by the STA, the MAC frame carried by the second time block includes:

Determining, by the STA, the MAC frame carried by the second time block according to the physical parameter of the second non-empty time stream;

Receiving, by the STA, the MAC frame carried by the first time block includes:

The STA parses the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.
The method according to claim 1 or 2, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block;

Receiving, by the STA, the MAC frame carried by the first time block includes:

The STA parses the MAC frame carried by the first time block according to the physical parameter of the first non-empty time stream;

Receiving, by the STA, the MAC frame carried by the second time block includes:

The STA parses the MAC frame carried by the second time block according to the physical parameter of the second non-space time stream.
The method according to any one of claims 2 to 4, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the AP presets to the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The method according to any one of claims 2 to 4, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
A method of data transmission, characterized in that the method comprises:

The STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information. The resource scheduling information includes a physical parameter of the space-time stream and first indication information, where the first indication information is used to indicate that the STA needs to send the first time to the AP in the same orthogonal frequency division multiple access OFDMA subband. Block and second time block;

Transmitting, by the STA, a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, where the first time block and the second time block are the same The physical parameters of the space-time flow are transmitted, and the first time block and the second time block respectively carry a media access control MAC frame.
The method according to claim 7, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The method according to claim 7 or 8, wherein the resource scheduling information further comprises physical parameters of the second non-empty time stream corresponding to the second time block, and the second non-empty time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block uses a physical parameter of the preset first non-empty time stream to indicate that the first time block carries The coding and modulation mode of the MAC frame.
The method according to claim 7 or 8, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block.
The method according to any one of claims 8 to 10, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The method according to any one of claims 8 to 10, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
A method of data transmission, characterized in that the method comprises:

The station STA receives the trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

The STA sends a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time The block and the second time block respectively carry a medium access control MAC frame.
The method according to claim 13, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The method according to claim 13 or 14, wherein the data packet further comprises second indication information, the second indication information being used to indicate the first time block and/or the second time block The physical parameter of the non-space time stream, the physical parameter of the non-space time stream is used to indicate the coded modulation mode of the corresponding time block.
The method according to claim 15, wherein when the second indication information indicates a physical parameter of the non-empty time stream of the first time block, the second time block adopts a preset non-empty time a physical parameter of the stream; when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the first time block adopts a physical parameter of the preset non-empty time stream.
The method according to any one of claims 14 to 16, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The method according to any one of claims 14 to 16, wherein the scheduling resource information further includes third indication information, where the third indication information is used to indicate the first time. Length of the block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the third indication information.
A method of data transmission, characterized in that the method comprises:

The access point AP sets resource scheduling information in a data packet that needs to be sent to the station STA, where the data packet includes a data field, the resource scheduling information includes first indication information, and the first indication information is used to indicate each positive The number of time blocks included in the data field on the frequency division multiple access OFDMA subband;

When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block are both performed by using the same physical parameters of the space-time stream. Transmitting, the first time block and the second time block respectively carrying a media access control MAC frame;

Sending, by the AP, the data packet and the resource scheduling information to the STA, so that the STA receives the first time block according to physical parameters of the space-time stream according to physical parameters of the space-time stream, and The second time block.
The method according to claim 19, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The method according to claim 19 or 20, wherein the resource scheduling information further comprises physical parameters of a second non-empty time stream corresponding to the second time block, and the second non-space time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block, and the first time block uses a preset physical parameter of the non-empty time stream to indicate the MAC frame carried by the first time block. The code modulation method.
The method according to claim 19 or 20, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-space time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block.
A method according to any one of claims 20 to 22, wherein said said The first time block occupies a preset number of OFDM symbols including:

The first time block occupies a fixed number of OFDM symbols that the AP presets to the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The method according to any one of claims 20 to 22, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
A method of data transmission, characterized in that the method comprises:

The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate the STA Transmitting, by the AP, the first time block and the second time block in the same orthogonal frequency division multiple access OFDMA subband;

Receiving, by the AP, a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, where the first time block and the second time block are both used The physical parameters of the same space-time flow are transmitted, where the first time block and the second time block respectively carry a media access control MAC frame; the AP parses the first time block and the first The MAC frame carried by the two time blocks respectively.
The method according to claim 25, wherein the first time block occupies a preset number or an indicated number of OFDM symbols; the method further comprises:

The AP collects data of the first time block according to the preset number or the indicated number of orthogonal frequency division multiplexing OFDM symbol lengths;

Determining, by the AP, the OFDM symbol length occupied by the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths;

The AP receives the second time according to the length of the OFDM symbol occupied by the second time block. Inter-block data.
The method according to claim 25 or 26, wherein the resource scheduling information further comprises physical parameters of the second non-empty time stream corresponding to the second time block, and the second non-empty time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block uses a physical parameter of the preset first non-empty time stream to indicate that the first time block carries Coded modulation mode of the MAC frame;

The parsing, by the AP, the MAC frame carried by the second time block includes:

Parsing, by the AP, the MAC frame carried by the second time block according to the physical parameter of the second non-empty time stream;

The parsing, by the AP, the MAC frame carried by the first time block includes:

The AP parses the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.
The method according to claim 25 or 26, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block;

The parsing, by the AP, the MAC frame carried by the first time block includes:

Parsing, by the AP, the MAC frame carried by the first time block according to the physical parameter of the first non-empty time stream;

The parsing, by the AP, the MAC frame carried by the second time block includes:

The AP parses the MAC frame carried by the second time block according to the physical parameter of the second non-empty time stream.
The method according to any one of claims 26 to 28, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a size corresponding to an OFDMA subband size for transmitting the data field The number of OFDM symbols.
The method according to any one of claims 26 to 28, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
A method of data transmission, characterized in that the method comprises:

The access point AP sends a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream;

Receiving, by the AP, a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time The block and the second time block respectively carry a medium access control MAC frame.
The method according to claim 31, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The method according to claim 31 or 32, wherein the data packet further comprises second indication information, the second indication information being used to indicate the first time block and/or the second time block The physical parameter of the non-space time stream, the physical parameter of the non-space time stream is used to indicate the coded modulation mode of the corresponding time block.
The method according to claim 33, wherein when the second indication information indicates a physical parameter of the non-empty time stream of the first time block, the second time block adopts a preset non-empty time a physical parameter of the stream; when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the first time block adopts a physical parameter of the preset non-empty time stream.
The method according to any one of claims 32 to 34, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed setting of the first time block by the STA in advance. The number of OFDM symbols; or,

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The method according to any one of claims 32 to 34, wherein the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the third indication information.
A STA is characterized in that the STA includes:

a transceiver module, configured to receive a data packet sent by the access point AP, where the data packet includes resource scheduling information and a data field, where the resource scheduling information includes a physical parameter of a space-time stream, and the resource scheduling information further includes a first indication Information, the first indication information is used to indicate the number of time blocks included in the data field on each orthogonal frequency division multiple access OFDMA subband;

a processing module, when the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block both adopt the same space time flow The physical parameter is transmitted, and the first time block and the second time block respectively carry a media access control MAC frame; the processing module is configured to parse the first time block and the second time block respectively The MAC frame carried.
The STA according to claim 37, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols; the transceiver module is further configured to:

Receiving the first time block and the second time block according to physical parameters of the space-time stream;

The processing module is further configured to: collect data of the first time block according to the preset number or the indicated number of OFDM symbol lengths;

The processing module is further configured to: calculate the OFDM occupied by the second time block according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths Symbol length

The processing module is further configured to: collect data of the second time block according to an OFDM symbol length occupied by the second time block.
The STA according to claim 37 or claim 38, wherein the resource scheduling information further includes physical parameters of the second non-empty-time stream corresponding to the second time block, and the second non-empty-time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block uses a physical parameter of the preset first non-empty time stream to indicate that the first time block carries Coded modulation mode of the MAC frame;

The processing module is specifically configured to:

Parsing the MAC frame carried by the second time block according to the physical parameter of the second non-spacetime stream;

The processing module is further specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.
The STA according to claim 37 or claim 38, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block;

The processing module is specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the first non-empty time stream;

The processing module is further specifically configured to:

And parsing the MAC frame carried by the second time block according to the physical parameter of the second non-spacetime stream.
The STA according to any one of claims 38 to 40, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the AP presets to the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The STA according to any one of claims 38 to 40, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
A STA is characterized in that the STA includes:

The transceiver module is configured to receive a trigger frame sent by the access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used by Instructing the STA to send the first time block and the second time block to the same orthogonal frequency division multiple access OFDMA subband to the AP;

The transceiver module is further configured to send a data packet to the AP, where the data packet includes a data field, where the data field includes a first time block and a second time block, and the first time block and the second time block The time blocks are all transmitted by using the same physical parameters of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

And a processing module, configured to control the transceiver module to receive a trigger frame sent by the AP, and control the transceiver module to send a data packet to the AP.
The STA according to claim 43, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The STA according to claim 43 or 44, wherein the resource scheduling information further includes physical parameters of the second non-empty time stream corresponding to the second time block, and the second non-empty time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block uses a physical parameter of the preset first non-empty time stream to indicate that the first time block carries The coding and modulation mode of the MAC frame.
The STA according to claim 43 or 44, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate the coding of the MAC frame carried by the first time block and the second time block. System.
The STA according to any one of claims 44 to 46, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The STA according to any one of claims 44 to 46, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
A STA is characterized in that the STA includes:

a transceiver module, configured to receive a trigger frame sent by an access point AP, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of a space-time stream;

The transceiver module is further configured to send a data packet to the AP, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time The block and the second time block respectively carry a media access control MAC frame;

And a processing module, configured to control the transceiver module to receive a trigger frame sent by the AP, and control the transceiver module to send a data packet to the AP.
The STA according to claim 49, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The STA according to claim 49 or 50, wherein the data packet further comprises second indication information, the second indication information being used to indicate the first time block and/or the second time block Physical parameter of the non-empty time stream, the physical parameter of the non-empty time stream is used to indicate the corresponding time The coding mode of the block.
The STA according to claim 51, wherein when the second indication information indicates a physical parameter of the non-empty time stream of the first time block, the second time block adopts a preset non-empty time a physical parameter of the stream; when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the first time block adopts a physical parameter of the preset non-empty time stream.
The STA according to any one of claims 50 to 52, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The STA according to any one of claims 50 to 52, wherein the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the third indication information.
An access point AP, where the AP includes:

a processing module, configured to set resource scheduling information in a data packet that needs to be sent to the station STA, where the data packet includes a data field, where the resource scheduling information includes first indication information, where the first indication information is used to indicate each The number of time blocks included in the data field on the orthogonal frequency division multiple access OFDMA subband;

When the first indication information indicates that the data field includes a first time block and a second time block, the first time block and the second time block are both performed by using the same physical parameters of the space-time stream. Transmitting, the first time block and the second time block respectively carrying a media access control MAC frame;

a transceiver module, configured to send the data packet and the resource scheduling information to the STA, so that the STA receives the first time according to physical parameters of the space-time stream according to physical parameters of the space-time stream A block and the second time block.
The AP according to claim 55, wherein the first time block occupies a preset Number or number of Orthogonal Frequency Division Multiplexing OFDM symbols.
The AP according to claim 55 or claim 56, wherein the resource scheduling information further includes physical parameters of the second non-empty-time stream corresponding to the second time block, and the second non-empty-time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block, and the first time block uses a preset physical parameter of the non-empty time stream to indicate the MAC frame carried by the first time block. The code modulation method.
The AP according to claim 55 or claim 56, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-empty time stream, the first non-empty time The physical parameter of the stream corresponds to the first time block, the physical parameter of the second non-empty time stream corresponds to the second time block, and the physical parameter of the first non-empty time stream and the second non- The physical parameters of the space-time stream are respectively used to indicate a coded modulation mode of the MAC frame carried by the first time block and the second time block.
The AP according to any one of claims 56 to 58, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the AP presets to the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The AP according to any one of claims 56 to 58, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
An access point AP, where the AP includes:

a transceiver module, configured to send a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of the space-time stream and first indication information, where the first indication information is used to indicate the The STA needs to send the first time block and the second time block to the AP in the same orthogonal frequency division multiple access OFDMA subband;

The transceiver module is further configured to receive a data packet sent by the STA, where the data packet includes a data field, where the data field includes a first time block and a second time block, and the first time block and the first time block The second time block is transmitted by using the same physical parameter of the space-time stream, where the first time block and the second time block respectively carry a media access control MAC frame;

The processing module is configured to parse the MAC frame carried by the first time block and the second time block respectively.
The AP according to claim 61, wherein the first time block occupies a preset number or an indicated number of OFDM symbols; the processing module is further configured to:

Receiving data of the first time block according to the preset number or the indicated number of orthogonal frequency division multiplexing OFDM symbol lengths;

The processing module is further configured to calculate, according to the total length of the obtained data field and the preset number of the first time block or the indicated number of OFDM symbol lengths, the second time block is occupied. OFDM symbol length;

The processing module is further configured to: collect data of the second time block according to an OFDM symbol length occupied by the second time block.
The AP according to claim 61 or 62, wherein the resource scheduling information further includes physical parameters of the second non-empty-time stream corresponding to the second time block, and the second non-empty-time stream The physical parameter is used to indicate a coded modulation mode of the MAC frame carried by the second time block; the first time block uses a physical parameter of the preset first non-empty time stream to indicate that the first time block carries Coded modulation mode of the MAC frame;

The processing module is specifically configured to:

Parsing the MAC frame carried by the second time block according to the physical parameter of the second non-spacetime stream;

The processing module is further specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the preset first non-empty time stream.
The AP according to claim 61 or 62, wherein the resource scheduling information further includes physical parameters of the first non-empty time stream and physical parameters of the second non-space time stream, the first non-empty time a physical parameter of the stream corresponding to the first time block, a physical parameter of the second non-empty time stream and the Corresponding to the second time block, the physical parameters of the first non-empty time stream and the physical parameters of the second non-empty time stream are respectively used to indicate the MAC carried by the first time block and the second time block The coding and modulation mode of the frame;

The processing module is specifically configured to:

Parsing the MAC frame carried by the first time block according to the physical parameter of the first non-empty time stream;

The processing module is further specifically configured to:

And parsing the MAC frame carried by the second time block according to the physical parameter of the second non-spacetime stream.
The AP according to any one of claims 62 to 64, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The AP according to any one of claims 62 to 64, wherein the scheduling resource information further includes second indication information, where the second indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the second indication information.
An access point AP, where the AP includes:

a transceiver module, configured to send a trigger frame to the station STA, where the trigger frame includes resource scheduling information, where the resource scheduling information includes physical parameters of a space-time stream;

The transceiver module is further configured to receive a data packet sent by the STA, where the data packet includes a data field and first indication information, where the first indication information is used to indicate a quantity of time blocks included in the data field;

When the data field includes the first time block and the second time block, the first time block and the second time block are both transmitted by using the same physical parameters of the space-time stream, the first time Piece And the second time block carries a media access control MAC frame respectively;

And a processing module, configured to control the transceiver module to send a trigger frame to the STA, and control the transceiver module to receive the data packet sent by the STA.
The AP according to claim 67, wherein the first time block occupies a preset number or an indicated number of orthogonal frequency division multiplexing OFDM symbols.
The AP according to claim 67 or 68, wherein the data packet further comprises second indication information, the second indication information being used to indicate the first time block and/or the second time block The physical parameter of the non-space time stream, the physical parameter of the non-space time stream is used to indicate the coded modulation mode of the corresponding time block.
The AP according to claim 69, wherein when the second indication information indicates a physical parameter of the non-empty time stream of the first time block, the second time block adopts a preset non-empty time a physical parameter of the stream; when the second indication information indicates a physical parameter of the non-empty time stream of the second time block, the first time block adopts a physical parameter of the preset non-empty time stream.
The AP according to any one of claims 68 to 70, wherein the occupying the preset number of OFDM symbols by the first time block comprises:

The first time block occupies a fixed number of OFDM symbols that the STA pre-sets the first time block by default; or

The first time block occupies a number of OFDM symbols corresponding to an OFDMA subband size for transmitting the data field.
The AP according to any one of claims 68 to 70, wherein the scheduling resource information further includes third indication information, where the third indication information is used to indicate a length of the first time block;

The occupying the indicated number of OFDM symbols by the first time block includes:

The first time block occupies a number of OFDM symbols of a length indicated by the third indication information.