CN109600205A

CN109600205A - A kind of data transmission method and device

Info

Publication number: CN109600205A
Application number: CN201710917232.7A
Authority: CN
Inventors: 吴伟民; 王娟; 于健
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2019-04-09
Anticipated expiration: 2037-09-30
Also published as: CN109600205B

Abstract

The embodiment of the present application discloses a kind of data transmission method and device, this method comprises: access point generates physical layer protocol data unit PPDU, there are when target identification in the site information of the targeted sites of PPDU, target identification is used to indicate the length of time block in resource unit belonging to targeted sites；Access point sends PPDU to targeted sites.When there is multiple time blocks in a resource unit, target identification can use to indicate the length of time block in resource unit belonging to targeted sites, so as to flexibly distribute the length of each time block in resource unit.Therefore, scheme provided by the embodiments of the present application is adapted to the transmission demand under different scenes.

Description

A kind of data transmission method and device

Technical field

The invention relates to fields of communication technology, more specifically, being related to data transmission method and device.

Background technique

WLAN (Wireless Local Area Network, WLAN) data grouping since 802.11a/g (Packet, also referred to as physical layer protocol data unit, Physical layer Protocol Data Unit, PPDU) is used The modulation system of OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing), entirely Transmission bandwidth distributes to a STA (Station, website).802.11ax has been further introduced into OFDMA on the basis of OFDM (Orthogonal Frequency Division Multiple Access, orthogonal frequency division multiple access), can be by whole bandwidth point The multiple STA of dispensing.

It is shown in Figure 1, the structural representation shown in FIG. 1 for the PPDU of the multiple time blocks of multi-user in the prior art Figure.In order to give the bandwidth allocation of entire data grouping to multiple STA, need to redesign HE-SIG-B (High Efficient Signal Field B, efficient signaling field B).Wherein, HE-SIG-B includes point of RU (Resource unit, resource unit) Website field one by one with STA in (Allocation), the instruction information of TS (Time Segment, time block) and each TS. The distribution of the RU of HE-SIG-B is used to indicate the distribution condition of the resource unit in frequency dimension, the instruction letter of the TS of HE-SIG-B Distribution condition of the breath for resource unit on time dimension.

For example, firstly, HE-SIG-B indicates the data grouping, there are 2 TS, i.e. TS1 and TS2 in Fig. 1；Then, HE- SIG-B indicates respectively the initial value of each TS, for example TS1, since the 1st OFDM symbol, TS2 is opened from the 10th OFDM symbol Begin；Secondly, the resource list in the distribution of the resource unit in HE-SIG-B instruction TS1 in frequency dimension and TS2 in frequency dimension The distribution of member；Again, HE-SIG-B indicates the resource indication information of the website one by one in TS1, according to STA1, STA2 and STA3 Sequence is indicated；Finally, the resource indication information of the website one by one in HE-SIG-B instruction TS2, according to STA4, STA5 and The sequence of STA6 is indicated.

For mode based on above-mentioned data grouping, by the instruction information unification of the TS of HE-SIG-B to time dimension Resource unit be allocated, so as to cause the quantity of the time block of the resource unit in each frequency dimension and the length of time block Spend it is identical, so the mode of the storing data of this data grouping have stronger limitation, can not flexibly adapt to not With the transmission demand under scene.

Summary of the invention

The embodiment of the present application provides a kind of data transmission method and device, so that data packet structure can be adapted to flexibly Transmission demand under different scenes.

The embodiment of the present application is achieved in that

In a first aspect, the embodiment of the present application provides a kind of data transmission method, this method comprises:

Access point generates physical layer protocol data unit PPDU, and there are targets in the site information of the targeted sites of PPDU When mark, target identification is used to indicate the length of time block in resource unit belonging to targeted sites；

Access point sends PPDU to targeted sites.

In the first aspect, when there is multiple time blocks in a resource unit, it can use target identification to indicate target The length of time block in resource unit belonging to website, so as to flexibly distribute the length of each time block in resource unit Degree.Therefore, scheme provided by the embodiments of the present application is adapted to the transmission demand under different scenes.

In one possible implementation, in the site information of the targeted sites of PPDU there are when target identification, mesh Mark mark is used to indicate the length of time block in resource unit belonging to targeted sites, comprising:

Exist in the site information of the targeted sites of PPDU there are when target identification, target identification is used to indicate in PPDU Aiming field, aiming field are used to indicate the length of each time block in resource unit belonging to targeted sites.

When the space configuration information of the targeted sites of PPDU is target identification, target identification is used to indicate according to Target Station Total symbolic number of website quantity and resource unit in resource unit belonging to point determines in resource unit where targeted sites The length of time block.

When the space configuration information of the targeted sites of PPDU is target identification, target identification is used to indicate according to Target Station The total symbolic number and the corresponding time span factor of target identification of resource unit belonging to point determine targeted sites in resource unit The length of the time block at place.

In one possible implementation, when the corresponding target information of target identification is used to indicate each in resource unit Between block empty time stream number.

In one possible implementation, when the targeted sites of PPDU occupy at least two resource units, in PPDU The instruction information of targeted sites is used to indicate at least two resource units one physical layer service data of unified carrying PSDU carries different PSDU respectively.

Second aspect, the embodiment of the present application provide a kind of data transmission method, this method comprises:

Access point generates multiple time block physical layer protocol data unit MU MTS PPDU, MU the MTS PPDU packets of multi-user It includes overall public domain, time block public domain and website domain, overall public domain is used to indicate the public letter of MU MTS PPDU one by one Breath, time block public domain are used to indicate the public information of each time block in MU MTS PPDU, and website domain is used to indicate MU one by one The information of the website of each resource unit storage in MTS PPDU；

Access point sends MU MTS PPDU to targeted sites.

In one possible implementation, overall public domain includes uplink or downlink transfer UL/DL, length Length, transmission opportunity TXOP, spatial reuse Spatial Reuse, bandwidth BW, instruction forward error control before filling because Field Pre-FEC Padding Factor of son, data packet extension disambiguate bit PE Disambiguity, Doppler Doppler, TS number of time block, the modulation of efficient signaling field B and coding strategy inventory HE-SIG-B MCS list, instruction Efficient signaling field B whether use dual carrier modulation inventory HE-SIG-B DCM list, instruction efficient signaling field B whether into The symbolic number or multi-user's multiple-input and multiple-output of inventory HE-SIG-B the compression list and HE-SIG-B of row compression At least one of MU-MIMO user bill of quantities.

In one possible implementation, time block public domain includes TS length, protection interval and long training sequence GI+ LTF, indicate whether to use the symbolic number Number of VHE-LTF of Space Time Coding STBC, very efficient long training sequence It is used to refer to when symbols, low density parity check code with the presence or absence of additional symbol LDPC Extra Symbol Segment At least one of with resource unit allocation RU allocation.

In one possible implementation, when the targeted sites of MU MTS PPDU occupy at least two resource units, In MU MTS PPDU the instruction information of targeted sites be used to indicate at least two resource units one PSDU of unified carrying or Different PSDU is carried respectively.

The third aspect, the embodiment of the present application provide a kind of data transmission method, this method comprises:

Access point generates trigger frame, and existing in trigger frame allows targeted sites to carry out the mesh that multiple time block MTS are transmitted When mark mark, target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame that there are aiming field, targets Field be used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, the length of each time block and At least one of the field that targeted sites are voluntarily dispatched；

Access point sends trigger frame to targeted sites.

In one possible implementation, trigger frame includes overall public domain, time block public domain and website domain one by one；

Overall public domain is used to indicate the public information of trigger frame；

Time block public domain is used to indicate the public information of each time block of uplink PPDU；

Website domain is used to indicate the information of each website in trigger frame one by one.

In one possible implementation, overall public domain includes first object field, and first object field is for referring to Show whether the targeted sites in first time block of the resource unit in the uplink PPDU based on trigger frame need to carry out carrier wave It listens to.

It in one possible implementation, include second in the instruction information of first time block of time block public domain Aiming field, the second aiming field are used to indicate in first time block of the resource unit in the uplink PPDU based on trigger frame Targeted sites whether need to carry out carrier sense；

Second time block of time block public domain includes third target into the instruction information of the last one time block Field, third aiming field are used to indicate second time block of the resource unit in the uplink PPDU based on trigger frame to last The STA of one time block is required to carry out carrier sense before carrying out data transmission.

In one possible implementation, overall public domain includes trigger frame type Trigger Type, Length, grade Connection instruction Cascade Indication, carrier sense CS Required, BW, switch-in point transmitting power AP TX are needed Power, data packet extend TS Packet Extension, Spatial Reuse, Doppler, time block number and are based on triggering At least one of public information Trigger Dependent Common Info of frame type.

In one possible implementation, time block public domain includes needing carrier sense, protection interval and long training Sequence GI+LTF, multi-user multiple-input and multiple-output long training sequence MU MIMO LTF mode, Number of VHE-LTF At least one of symbols, LDPC Extra Symbol Segment and TS length.

Fourth aspect, the embodiment of the present application provide a kind of data transmission method, this method comprises:

Targeted sites receive the trigger frame that access point is sent；

Targeted sites are based on trigger frame and generate uplink PPDU, and existing in trigger frame allows targeted sites to carry out MTS transmission Target identification when, target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame there are aiming field, Aiming field is used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, the length of each time block The field that degree and targeted sites are voluntarily dispatched；

Targeted sites send uplink PPDU to access point.

5th aspect, the embodiment of the present application provide a kind of data transmission method, this method comprises:

Access point generates PPDU, when the targeted sites of PPDU occupy at least two resource units, targeted sites in PPDU Instruction information be used to indicate at least two resource units one PSDU of unified carrying or carry different PSDU respectively；

Access point sends PPDU to targeted sites.

6th aspect, the embodiment of the present application provide a kind of data transmission device, which includes:

PPDU generation module, for generating PPDU, there are when target identification in the site information of the targeted sites of PPDU, Target identification is used to indicate the length of time block in resource unit belonging to targeted sites；

Sending module, for sending PPDU to targeted sites.

In one possible implementation, PPDU generation module is believed specifically for the website of the targeted sites in PPDU There are when target identification in breath, target identification is used to indicate in PPDU there are aiming field, and aiming field is used to indicate Target Station The length of each time block in resource unit belonging to point.

In one possible implementation, PPDU generation module is matched specifically for the space of the targeted sites in PPDU When confidence breath is target identification, target identification is used to indicate website quantity and money in the resource unit according to belonging to targeted sites Total symbolic number of source unit determines the length of the time block in resource unit where targeted sites.

In one possible implementation, PPDU generation module is matched specifically for the space of the targeted sites in PPDU When confidence breath is target identification, target identification is used to indicate the total symbolic number and target of the resource unit according to belonging to targeted sites Identify the length that the corresponding time span factor determines the time block in resource unit where targeted sites.

In one possible implementation, when the targeted sites of PPDU occupy at least two resource units, in PPDU The instruction information of targeted sites is used to indicate at least two resource units one PSDU of unified carrying or respectively carrying difference PSDU.

7th aspect, the embodiment of the present application provide a kind of data transmission device, which includes:

PPDU generation module, it is public including overall public domain, time block for generating MU MTS PPDU, MU MTS PPDU Domain and one by one website domain, overall public domain are used to indicate the public information of MU MTS PPDU, and time block public domain is used to indicate MU The public information of each time block in MTS PPDU, website domain is used to indicate each resource unit in MU MTS PPDU and deposits one by one The information of the website of storage；

Sending module, for sending MU MTS PPDU to targeted sites.

In one possible implementation, overall public domain includes UL/DL, length Length, TXOP, Spatial Reuse, BW, Pre-FEC Padding Factor, PE Disambiguity, Doppler, TS numbers, HE-SIG-B MCS List, HE-SIG-B DCM list, the symbolic number of HE-SIG-B compression list and HE-SIG-B or MU-MIMO are used At least one of family bill of quantities.

In one possible implementation, time block public domain includes TS length, GI+LTF, STBC, Number of At least one of VHE-LTF symbols, LDPC Extra Symbol Segment and RU allocation.

Eighth aspect, the embodiment of the present application provide a kind of data transmission device, which includes:

Trigger frame generation module, for generating trigger frame, existing in trigger frame allows targeted sites to carry out multiple times When the target identification of block MTS transmission, target identification, which is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame, to be existed Aiming field, aiming field are used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, each At least one of the field that the length and targeted sites of time block are voluntarily dispatched；

Sending module, for sending trigger frame to targeted sites.

In one possible implementation, overall public domain includes Trigger Type, Length, Cascade Indication、CS Required、BW、AP TX Power、Packet Extension、Spatial Reuse、Doppler、 At least one of TS number and Trigger Dependent Common Info.

In one possible implementation, time block public domain includes needing carrier sense, GI+LTF, MU MIMO LTF mode, Number of VHE-LTF symbols, at least one in LDPC Extra Symbol Segment and TS length Kind.

9th aspect, the embodiment of the present application provide a kind of data transmission device, which includes:

Receiving module, for receiving the trigger frame of access point transmission；

Uplink PPDU generation module, for generating uplink PPDU based on trigger frame, existing in trigger frame allows Target Station When point carries out the target identification of MTS transmission, target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame There are aiming field, aiming field be used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, The field that the length and targeted sites of each time block are voluntarily dispatched；

Sending module, for sending uplink PPDU to access point.

Tenth aspect, the embodiment of the present application provide a kind of data transmission device, which includes: processor and storage Device, wherein the operational order that processor is able to carry out is stored in memory, processor reads the operational order in memory and uses The method described in any possible implementation for realizing first aspect or first aspect.

Tenth on the one hand, and the embodiment of the present application provides a kind of data transmission device, which includes: processor and storage Device, wherein the operational order that processor is able to carry out is stored in memory, processor reads the operational order in memory and uses The method described in any possible implementation for realizing second aspect or second aspect.

12nd aspect, the embodiment of the present application provide a kind of data transmission device, which includes: processor and storage Device, wherein the operational order that processor is able to carry out is stored in memory, processor reads the operational order in memory and uses The method described in any possible implementation for realizing the third aspect or the third aspect.

13rd aspect, the embodiment of the present application provide a kind of data transmission device, which includes: processor and storage Device, wherein the operational order that processor is able to carry out is stored in memory, processor reads the operational order in memory and uses The method described in any possible implementation for realizing fourth aspect or fourth aspect.

Fourteenth aspect, the embodiment of the present application provide a kind of computer readable storage medium, the computer-readable storage Instruction is stored in medium, when run on a computer, so that computer executes above-mentioned first aspect or first aspect Any possible implementation, the third aspect or the third aspect of any possible implementation, second aspect or second aspect Any possible implementation and fourth aspect or fourth aspect any possible implementation described in method.

15th aspect, the embodiment of the present application provides a kind of computer program product comprising instruction, when it is being calculated When being run on machine, so that computer executes above-mentioned first aspect or any possible implementation of first aspect, second aspect Or any possible implementation of second aspect, any possible implementation of the third aspect or the third aspect and four directions Method described in any possible implementation of face or fourth aspect.

Detailed description of the invention

Structural schematic diagram shown in FIG. 1 for the PPDU of the multiple time blocks of multi-user in the prior art；

Shown in Fig. 2 is a kind of schematic diagram of a scenario of access point and host provided by the embodiments of the present application；

Shown in Fig. 3 is a kind of flow chart of data transmission method provided by the embodiments of the present application；

Flow chart shown in Fig. 4 for another data transmission method provided by the embodiments of the present application；

Shown in fig. 5 is a kind of structural schematic diagram of PPDU provided by the embodiments of the present application；

Flow chart shown in fig. 6 for another data transmission method provided by the embodiments of the present application

Structural schematic diagram shown in Fig. 7 for another kind PPDU provided by the embodiments of the present application；

Flow chart shown in Fig. 8 for another data transmission method provided by the embodiments of the present application；

Flow chart shown in Fig. 9 for another data transmission method provided by the embodiments of the present application；

Shown in Fig. 10 is a kind of structural schematic diagram of trigger frame provided by the embodiments of the present application；

It is the structural schematic diagram of another trigger frame provided by the embodiments of the present application shown in Figure 11；

It is the flow chart of another data transmission method provided by the embodiments of the present application shown in Figure 12；

The structural schematic diagram of the uplink PPDU generated for targeted sites based on trigger frame shown in Figure 13；

It is the flow chart of another data transmission method provided by the embodiments of the present application shown in Figure 14；

Structural schematic diagram shown in figure 15 for a kind of MU MTS PPDU；

It is the structural schematic diagram of another MU MTS PPDU shown in Figure 16；

It is the flow chart of another data transmission method provided by the embodiments of the present application shown in Figure 17；

It is a kind of schematic diagram of data transmission device provided by the embodiments of the present application shown in Figure 18；

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 19；

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 20；

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 21；

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 22.

Specific embodiment

It is shown in Figure 2, it is shown in Fig. 2 for a kind of access point provided by the embodiments of the present application (Access Point, AP) with the schematic diagram of a scenario of host (Station, website).It include access point 10, website in schematic diagram of a scenario shown in Fig. 2 The websites such as 21 and website 22.Access point 10 can send the PPDU (Physical of downlink to websites such as website 21 and websites 22 Layer Protocol Data Unit, physical layer protocol data unit), access point 10 can also be to website 21 and website 22 etc. Website sends trigger frame, and the websites such as website 21 and website 22 can send the TB PPDU (Trigger of uplink to access point 10 Based Physical layer Protocol Data Unit, the physical layer protocol data unit based on trigger frame).

The access point that the embodiment of the present application is mentioned includes but is not limited to the communication server, router, interchanger or bridge etc. Equipment, the website that the embodiment of the present application is mentioned include but is not limited to the equipment such as computer or mobile phone.Certainly, website, which is likely to be, connects Access point, and access point is not it could also be possible that website, the embodiment of the present application limits to access point and website is fixed equipment.

Below in conjunction with the attached drawing in the embodiment of the present application, data transmission method provided by the embodiments of the present application is retouched It states.

Shown in Fig. 3 is a kind of flow chart of data transmission method provided by the embodiments of the present application.Method shown in Fig. 3 In, when there is multiple time blocks in a resource unit, it can use target identification to indicate resource unit belonging to targeted sites The length of middle time block, so as to flexibly distribute the length of each time block in resource unit, so the embodiment of the present application The scheme of offer is adapted to the transmission demand under different scenes.This approach includes the following steps.

Step S11, access point generates physical layer protocol data unit PPDU, in the site information of the targeted sites of PPDU There are when target identification, target identification is used to indicate the length of time block in resource unit belonging to targeted sites.

Wherein, there are plurality of target mark in the site information of the targeted sites of PPDU, every kind of target identification is Different modes is respectively adopted to indicate target in the mark reserved in the site information of the targeted sites of PPDU, every kind of target identification Several situations that may be present are briefly described below in the length of time block in resource unit belonging to website.

For example, after the PPDU that targeted sites receive access point transmission, if targeted sites read the mesh of PPDU The mark reserved in the site information of labeling station point, then targeted sites can learn the PPDU, there is also aiming field, the mesh Marking-up section is used to indicate the length of each time block in resource unit belonging to targeted sites.

For another example, after the PPDU that targeted sites receive access point transmission, if targeted sites read the mesh of PPDU The mark reserved in the site information of labeling station point, then just learn can be according to the resource unit belonging to targeted sites for targeted sites In website quantity and total symbolic number of resource unit determine the length of the time block in resource unit where targeted sites.

For another example, after the PPDU that targeted sites receive access point transmission, if targeted sites read the mesh of PPDU The mark reserved in the site information of labeling station point, then just learn can be according to the resource unit belonging to targeted sites for targeted sites Total symbolic number and the corresponding time span factor of target identification determine the length of the time block in resource unit where targeted sites Degree.

Step S12, access point sends PPDU to targeted sites.

When there is multiple time blocks in a resource unit in the embodiment shown in fig. 3, target identification can use to refer to Show the length of time block in resource unit belonging to targeted sites, so as to flexibly distribute each time block in resource unit Length.Therefore, scheme provided by the embodiments of the present application is adapted to the transmission demand under different scenes.

Optionally, when the targeted sites of PPDU occupy at least two resource units, the instruction letter of targeted sites in PPDU Breath is used to indicate at least two resource units one physical layer service data PSDU of unified carrying or carries respectively not Same PSDU.

Wherein, when a targeted sites occupy at least two resource units, there are following two situations:

The first situation: targeted sites occupy multiple resource units, moreover, multiple resource units use identical physical layer Parameter is uniformly encoded, then multiple resource units load the same PSDU (Physical Service Data Unit, Physical layer service data).

Second situation: targeted sites occupy multiple resource units, and still, each resource unit that targeted sites occupy can To be used for transmission different types of data, moreover, each resource unit that targeted sites occupy has robustness and rate etc. Different requirements, then each resource unit that targeted sites occupy needs that different physical layer parameters is taken to be compiled respectively Code, so multiple resource units that targeted sites occupy load different PSDU.

In order to distinguish both the above situation, a bit can be increased in the field of website one by one of PPDU, so that should Bit instruction targeted sites go to receive and dispatch according to 1 PSDU also according to multiple PSDU.It is of course also possible in the public word of PPDU Duan Zhong forms bit map for each website, to indicate respectively both the above situation.

If indicating that multiple resource units of targeted sites carry the same PSDU, for the second of the targeted sites The resource indication information of the website one by one of a resource unit, can be without instruction, to reduce signaling instruction bring expense.

Flow chart shown in Fig. 4 for another data transmission method provided by the embodiments of the present application.Side shown in Fig. 4 In method, when there is multiple time blocks in a resource unit, target identification can use to indicate resource list belonging to targeted sites The length of time block in member, so as to flexibly distribute the length of each time block in resource unit, so the application is implemented The scheme that example provides is adapted to the transmission demand under different scenes.This approach includes the following steps.

Step S21, access point generates physical layer protocol data unit PPDU, in the site information of the targeted sites of PPDU There are when target identification, target identification is used to indicate in PPDU there are aiming field, and aiming field is used to indicate targeted sites institute The length of each time block in the resource unit of category.

Wherein, target identification can be reserved site identity.Access point, which will not distribute to reserved site identity, appoints What website is identified as the mark for identifying the website using reserved site identity as site groups.Reserved website Mark is used to indicate in PPDU there are aiming field, at this point, the site information of the targeted sites of PPDU is no longer used to instruction target The site information of the site information of website, the targeted sites of PPDU is used to indicate the relevant information of the aiming field.Aiming field Relevant information include MCS (Modulation used by reserved site identity, the symbolic number of aiming field, aiming field And Coding Scheme, modulating-coding strategy) and the number of time block at least one field.

If target identification is not present in the site information of the targeted sites of PPDU, targeted sites can be according to original Mode read the site information of targeted sites；If there are target identification in the site information of the targeted sites of PPDU, that Targeted sites just cannot read the site information of targeted sites according to original mode, but by the website of targeted sites Information escape is read as the relevant information of aiming field.

It, can be in aiming field if the length of each time block is identical in resource unit belonging to targeted sites Public domain uniformly indicates the length of each time block in resource unit belonging to targeted sites；If resource belonging to targeted sites The length of each time block is different in unit, then can indicate respectively targeted sites in the field of website one by one of aiming field The length of each time block in affiliated resource unit.

In addition, aiming field also can indicate that in resource unit belonging to targeted sites whether carried out MU-MIMO (Multiple User Multiple Input Multiple Output, multi-user's multiple-input and multiple-output) transmission.If PPDU is transmitted using single user, then the site identity of website, NSTS in resource unit belonging to aiming field instruction targeted sites (Number of Spatial and Time Stream, empty time stream number), TX Beamforming (Transmit Beamforming is used to refer to whether use Beamforming technology), MCS, DCM (Dual Coding Modulation, it is double Carrier modulation) and other physical layer parameter information such as Coding (instruction type of coding)；If PPDU uses MU-MIMO, mesh The site identity of website, Spatial configuration (pass through one in resource unit belonging to marking-up section instruction targeted sites A table indicates the empty time stream number of MU-MIMO unit), other physical layer parameter information such as MCS, DCM, Coding.

Certainly, target identification may be reserved MCS.Since reserved MCS indicates that the MCS field is not used completely To the greatest extent, 802.11ax supports MCS0 to MCS11 totally 12 kinds of MCS at present, and 12 to 15 be reserved bit, it is possible to utilize 12 to 15 guarantor Stay position as target identification.Reserved MCS is used to indicate in PPDU there are aiming field, at this point, the station of the targeted sites of PPDU Point information is no longer used to the site information of instruction targeted sites, and the site information of the targeted sites of PPDU is used to indicate the target word The relevant information of section.The relevant information of aiming field includes reserved site identity, the symbolic number of aiming field, aiming field institute At least one field in the MCS of use and the number of time block.

Shown in Figure 5, shown in fig. 5 is a kind of structural schematic diagram of PPDU provided by the embodiments of the present application.Fig. 5 institute The PPDU shown can be compatible with 802.11ax.STA1 USER INFO in Fig. 5 is the user information of website 1, STA1 USER INFO indicates the site information of resource unit belonging to STA1；GROUP2 USER INFO is second group of user information, GROUP2 USER INFO indicates HE-SIG-C (the High Efficient Signal in resource unit belonging to STA2 Field C, efficient signaling field C) relevant information；GROUP3 USER INFO is third group user information, GROUP3 USER INFO indicates the relevant information of the HE-SIG-C in resource unit belonging to STA3 and STA4.

In the embodiment shown in fig. 5, resource unit occupied by STA1 is identical as the data packet structure of 802.11ax.And For the resource unit in other two frequency, there is HE-SIG-C and two time block.In frequency Two time blocks of two resource units have been distributed on STA2, two time blocks point of the third resource unit in frequency STA3 and STA4 are not distributed to.For distributing the scene of two time blocks to STA, suitable for carry out simultaneously different type and The data of different service quality are transmitted, and different types of data have different needs rate and robustness, it is therefore desirable to adopt It is transmitted with different physical layer parameters.It is of course also possible to which the data of a STA new biography are placed on difference with the data retransmitted Time block in, different physical layer parameters is respectively adopted and is transmitted.

In the embodiment shown in fig. 5, target identification can be reserved site identity, or reserved MCS.In advance The site identity or reserved MCS stayed are used to indicate in PPDU there are HE-SIG-C, at this point, the website of the targeted sites of PPDU is believed Breath is no longer used to the site information of instruction targeted sites, and the site information of the targeted sites of PPDU is used to indicate the phase of HE-SIG-C Close information.The relevant information of HE-SIG-C includes reserved site identity, the HE-SIG-C SYM NO (symbol of HE-SIG-C Number), at least one field in HE-SIG-C MCS and TS NO (number of time block).Wherein, HE-SIG-C SYM NO and The full name in English of NO in TS NO is Number.

In the embodiment shown in fig. 5, if the length of each time block is identical in resource unit belonging to targeted sites, So the length of each time block in resource unit belonging to targeted sites can be uniformly indicated in the public domain of HE-SIG-C；Such as The length of each time block is different in resource unit belonging to fruit targeted sites, then can be in the website word one by one of HE-SIG-C The length of each time block in resource unit belonging to targeted sites is indicated respectively in section.

In the embodiment shown in fig. 5, HE-SIG-C also can indicate that in resource unit belonging to targeted sites whether into MU-MIMO transmission is gone.If PPDU is transmitted using single user, HE-SIG-C is indicated in resource unit belonging to targeted sites Other physical layer parameter information such as the site identity of website, NSTS, TX Beamforming, MCS, DCM and Coding；If PPDU uses MU-MIMO, then HE-SIG-C indicates the site identity of website, Spatial in resource unit belonging to targeted sites Other physical layer parameter information such as configuration, MCS, DCM, Coding.

In the embodiment shown in fig. 5, according to the instruction information in HE-SIG-A, HE-SIG-B and HE-SIG-C, STA can With learn the frequency belonging to oneself resource unit and corresponding physical layer parameter, to read in corresponding resource unit Data.

In the embodiment shown in fig. 5, HE-STF (High Efficient Short Training Field, efficiently it is short Training sequence) and HE-LTF (High Efficient Long Training Field, efficient long training sequence) it is all labeled For Optional Field.If each time block in resource unit belonging to targeted sites is all made of and first group of HE-STF and first The identical empty time stream parameter of group HE-LTF, including NSTS, TX Beamforming and correlating precoding matrix etc., then without additional It transmits Mid-amble (Middle Preamble, intermediate lead code), it is only necessary to which each time block is indicated by HE-SIG-C Length.If each time block in resource unit belonging to targeted sites uses and first group HE-STF and first group HE-LTF different empty time stream parameters then needs to be inserted into Mid-amble, and indicates respectively each time block in HE-SIG-C The parameters such as the length and type of HE-LTF.In addition, if HE-SIG-C is then not necessarily in HE- using regular length and fixed MCS It is indicated in SIG-B.

It may be noted that the title of HE-SIG-A, HE-SIG-B and HE-SIG-C in the embodiment of the present application are used to indicate area Divide different signaling fields, other titles can also be used.Such as NG-SIG-X (NG:Next Generation, next-generation, X Represent A/B/C etc.), VHE-SIG-X (VHE:Very High Efficient, very efficiently), VF-SIG-X (VF:Video Wireless Fidelity, video Wireless Fidelity) etc. the signaling field title that may be used in generation standard.RL-SIG Follow-on identifier, such as NG Mark (follow-on mark), VHE Mark (very efficient mark can be substituted for Know), VF Mark (video Wi-Fi) or MTS Mark (marks of multiple time blocks), scheme pair provided by the embodiments of the present application This is with no restrictions.

Step S22, access point sends PPDU to targeted sites.

In the embodiment shown in fig. 4, when there is multiple time blocks in a resource unit, it can use target identification to refer to Show that there are aiming fields in PPDU, then indicates the length of each time block in resource unit belonging to targeted sites with aiming field Degree, so as to flexibly distribute the length of each time block in resource unit.Therefore, scheme provided by the embodiments of the present application can To adapt to the transmission demand under different scenes.

Flow chart shown in fig. 6 for another data transmission method provided by the embodiments of the present application.Side shown in Fig. 6 In method, when there is multiple time blocks in a resource unit, target identification can use to indicate resource list belonging to targeted sites The length of time block in member, so as to flexibly distribute the length of each time block in resource unit, so the application is implemented The scheme that example provides is adapted to the transmission demand under different scenes.This approach includes the following steps.

Step S31, access point generates physical layer protocol data unit PPDU, in the space configuration letter of the targeted sites of PPDU When breath is target identification, target identification is used to indicate website quantity and resource list in the resource unit according to belonging to targeted sites Total symbolic number of member determines the length of the time block in resource unit where targeted sites.

Wherein, spatial configuration is space configuration information, and space configuration information is present in targeted sites In site information when MU-MIMO transmission, the space configuration information in the site information of targeted sites can be the two of 4 bits System number.For example, space configuration information in the site information of targeted sites can in 0000 to 1111 any one two into Number processed.

It refers to shown in table 1, a part of the table of space configuration information in current 802.11ax shown in table 1.In order to Space is saved, the relevant information that website number is 2 is only listed in table 1, the relevant information that website number is 3 to 8 is unlisted.Wherein, In the case where website number is 2, if space configuration information is 0000 in table 1, the empty time stream number of website 1 is 1, is stood The empty time stream number of point 2 is 1；If space configuration information is 0001 in table 1, the empty time stream number of website 1 is 2, website 2 Empty time stream number is 1；And so on, if space configuration information is 1001 in table 1, the empty time stream number of website 1 is 4, is stood The empty time stream number of point 2 is 4.

In table 1, when website number is 2,1010 to 1111 in space configuration information be 6 reserved places, this 6 pre- Staying position not indicates any meaning.For other website numbers, it is corresponding with a certain number of reserved places.

Table 1

The embodiment of the present application can use the reserved place in space configuration information as target identification, so that target identification refers to Show that total symbolic number of website quantity and resource unit in the resource unit according to belonging to targeted sites determines mesh in resource unit The length of time block where labeling station point.

It is briefly described below, the station in the resource unit according to belonging to targeted sites how is indicated using target identification Point quantity and total symbolic number of resource unit determine the length of the time block in resource unit where targeted sites.

The website number of resource unit in PPDU on optional frequency is M, and total symbolic number of the resource unit is N, then the money The length of the preceding occupied time block of M-1 website in source unit are as follows: the total symbolic number N's and website number M of the resource unit Quotient rounds up；The length of the occupied time block of the last one website in the resource unit are as follows: the resource unit it is total The difference of the length of symbolic number N and the preceding occupied time block of M-1 website.

For example, it is assumed that the website number of the resource unit in PPDU in first frequency is 2, total symbol of the resource unit Number is 15, and it is 8 that total symbolic number 15 of the resource unit and the quotient of website number 2, which round up, so in the resource unit The length of first occupied time block of website is 8 symbolic numbers；Total symbolic number 15 of the resource unit and first website The difference of the length 8 of occupied time block is 7, so the length of second occupied time block of website in the resource unit Degree is 7 symbolic numbers.Therefore, the length of first occupied time block of website of the resource unit in first frequency is 8 A symbolic number, the length of second occupied time block of website of the resource unit in first frequency are 7 symbolic numbers.

For another example, it is assumed that the website number of the resource unit in PPDU in second frequency is 3, total symbol of the resource unit Number is 16, and it is 6 that total symbolic number 16 of the resource unit and the quotient of website number 3, which round up, so in the resource unit The length of the occupied time block of first website and second occupied time block of website is 6 symbolic numbers；The resource The difference of total symbolic number 16 of unit and the length 12 of the occupied time block of preceding 2 websites is 4, so in the resource unit The length of the occupied time block of third website is 4 symbolic numbers.Therefore, first of the resource unit in second frequency The length of the occupied time block of website is 6 symbolic numbers, occupied by second website of the resource unit in second frequency The length of time block be 6 symbolic numbers, the occupied time block of third website of the resource unit in second frequency Length is 4 symbolic numbers.

In addition, illustrating that space configuration information is pre- when the space configuration information of the targeted sites of PPDU is target identification Position is stayed, so space configuration information can not indicate empty time stream number according to original mode.It in order to solve this problem, can be preparatory The corresponding relationship for establishing reserved place Yu empty time stream number can be learnt and the reserved place pair when website reads reserved place The empty time stream number answered.

For example, it is assumed that 1010 being reserved place in space configuration information, and reserved place 1010 and empty time stream have been pre-established The corresponding relationship of number 3, there are when reserved place 1010 in the space configuration information of the targeted sites of PPDU, then website can be looked into Empty time stream number corresponding with the reserved place 1010 is looked for, can determine sky corresponding with the reserved place 1010 by the inquiry of website When fluxion be 3.

It is shown in Figure 7, the structural schematic diagram shown in Fig. 7 for another kind PPDU provided by the embodiments of the present application.Such as The space configuration information of the targeted sites of PPDU is target identification in fruit Fig. 7, then the target identification is used to indicate according to target Total symbolic number of website quantity and resource unit in resource unit belonging to website determines in resource unit where targeted sites Time block length.

It in the embodiment shown in fig. 7, can by the distribution of the resource unit in HE-SIG-B common (public) part To indicate the distribution of resource unit, the number of website in some resource unit can also be indicated simultaneously.If some resource unit The number of middle website is 1, then website is not belonging to MU MIMO transmission in the resource unit；If website in some resource unit Number be at least 2, then website belongs to MU MIMO transmission in the resource unit.

In the embodiment shown in fig. 7, for website 1, the quantity of the time block of resource unit belonging to website 1 is 1, then access point can distribute unreserved position for space configuration information, so that space configuration information is only used for indicating the sky of the website When fluxion.

In the embodiment shown in fig. 7, for website 2, the quantity of the time block of resource unit belonging to website 2 is big In 1, then access point can distribute reserved place for space configuration information, so that belonging to space configuration information escape instruction website 2 The length of each time block in resource unit.Certainly, if pre-establishing the reserved place and empty time stream number of space configuration information Corresponding relationship, then can learn empty time stream number corresponding with the reserved place when website reads reserved place.

Step S32, access point sends PPDU to targeted sites.

In the embodiment shown in fig. 6, when there is multiple time blocks in a resource unit, it can use target identification instruction Total symbolic number of website quantity and resource unit in the resource unit according to belonging to targeted sites determines target in resource unit The length of time block where website, so as to flexibly distribute the length of each time block in resource unit.Therefore, this Shen Please embodiment provide scheme be adapted to the transmission demand under different scenes.

Flow chart shown in Fig. 8 for another data transmission method provided by the embodiments of the present application.Side shown in Fig. 8 In method, when there is multiple time blocks in a resource unit, target identification can use to indicate resource list belonging to targeted sites The length of time block in member, so as to flexibly distribute the length of each time block in resource unit, so the application is implemented The scheme that example provides is adapted to the transmission demand under different scenes.This approach includes the following steps.

Step S41, access point generates physical layer protocol data unit PPDU, in the space configuration letter of the targeted sites of PPDU When breath is target identification, target identification is used to indicate the total symbolic number and target identification of the resource unit according to belonging to targeted sites The corresponding time span factor determines the length of the time block in resource unit where targeted sites.

It refers to shown in table 2, a part of the table of space configuration information in current 802.11ax shown in table 2.In order to Space is saved, the relevant information that website number is 2 is only listed in table 1, the relevant information that website number is 3 to 8 is unlisted.Wherein, In the case where website number is 2, if space configuration information is 0000 in table 1, the empty time stream number of website 1 is 1, is stood The empty time stream number of point 2 is 1；If space configuration information is 0001 in table 1, the empty time stream number of website 1 is 2, website 2 Empty time stream number is 1；And so on, if space configuration information is 1001 in table 1, the empty time stream number of website 1 is 4, is stood The empty time stream number of point 2 is 4.

In table 2, when website number is 2,1010 to 1111 in space configuration information be 6 reserved places, this 6 pre- Position is stayed to indicate respectively the different time span factor of 2-6 kind.For other website numbers, it is corresponding with a certain number of reserved Position, each reserved place can equally indicate the different time span factors.

Table 2

The embodiment of the present application can use the reserved place in space configuration information as target identification, so that target identification refers to The total symbolic number and the corresponding time span factor of target identification for showing the resource unit according to belonging to targeted sites determine resource list The length of time block in member where targeted sites.

It is briefly described below, total symbol of the resource unit according to belonging to targeted sites how is indicated using target identification Number and the corresponding time span factor of target identification determine the length of the time block in resource unit where targeted sites.

The website number of resource unit in PPDU on optional frequency is M, and total symbolic number of the resource unit is N, then the money The length of each occupied time block of website in source unit are as follows: total symbolic number N of the resource unit is corresponding with target identification The quotient of the time span factor rounds up；Alternatively, the length of the preceding occupied time block of M-1 website in the resource unit Are as follows: the quotient of total symbolic number N time span factor corresponding with target identification of the resource unit rounds up；The resource unit In the occupied time block of the last one website length are as follows: shared by total symbolic number N of the resource unit and preceding M-1 website The difference of the length of time block.

For example, it is assumed that the website number of the resource unit in PPDU in second frequency is 4, total symbol of the resource unit Number is 20, and the corresponding time span factor of the space configuration information of first website is 4, the space configuration letter of second website Ceasing the corresponding time span factor is 4, and the corresponding time span factor of the space configuration information of third website is 8, then the money The quotient of total symbolic number 20 of source unit time span factor 4 corresponding with the space configuration information of first website rounds up It is 5, the quotient of total symbolic number 20 of resource unit time span factor 4 corresponding with the space configuration information of second website Rounding up is 5, total symbolic number 20 of the resource unit and the corresponding time span of the space configuration information of third website because It is 3 that the quotient of son 8, which rounds up,；The length 13 of total symbolic number 20 of the resource unit and the occupied time block of preceding 3 websites Difference be 7, so the length of the 4th occupied time block of website in the resource unit be 7 symbolic numbers.

Optionally, when the space configuration information of the targeted sites of PPDU is target identification, illustrate that space configuration information is Reserved place, so space configuration information can not indicate empty time stream number according to original mode.In order to solve this problem, due to nothing It need to indicate the length of the occupied time block of the last one website, it is possible to utilize the space configuration information of the last one website Indicate the empty time stream number of the occupied time block of each website in the resource unit.

For example, it is assumed that the website number in the resource unit of first frequency is 2, the empty time stream number that first website needs is 4, The empty time stream number that second website needs also is 4.Due to being not necessarily to indicate the length of second occupied time block of website, in conjunction with Table 2 can indicate each website institute in the resource unit it is found that can make the space configuration information 1001 of second website The empty time stream number of the time block of occupancy.

It is shown in Figure 7, it, should if the space configuration information of the targeted sites of PPDU is target identification in Fig. 7 Target identification is used to indicate the total symbolic number and the corresponding time span of target identification of the resource unit according to belonging to targeted sites The factor determines the length of the time block in resource unit where targeted sites.

Step S42, access point sends PPDU to targeted sites.

In the embodiment shown in fig. 8, when there is multiple time blocks in a resource unit, it can use target identification instruction The corresponding time span factor of the total symbolic number and target identification of the resource unit according to belonging to targeted sites determines resource unit The length of time block where middle targeted sites, so as to flexibly distribute the length of each time block in resource unit.Cause This, scheme provided by the embodiments of the present application is adapted to the transmission demand under different scenes.

Flow chart shown in Fig. 9 for another data transmission method provided by the embodiments of the present application.This method include with Lower step.

Step S51, access point generates trigger frame, and existing in trigger frame allows targeted sites to carry out multiple time block MTS When the target identification of transmission, target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame that there are target words Section, aiming field are used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, each time block Length and at least one of the field voluntarily dispatched of targeted sites.

Wherein, target identification can for trigger frame type (Trigger Type), HE-SIG-A Reserved or The fields such as Reserved, target identification are used to indicate the trigger frame that the trigger frame is MTS type, support multiple websites for triggering TB-MTS (Trigger Based Multiple Time Segment, multiple time blocks based on trigger frame) data grouping Transmission.

Can trigger frame public domain and one by one carried in website field permission time block TS number, aiming field Length, aiming field MCS and whether allow to carry out at least one of the field of MTS transmission.If allowing some website Voluntarily dispatched, then can be using fields such as type of coding, MCS and DCM as reserved field, access point will not be directed to website The aiming field in uplink PPDU that reserved field is indicated, but generated by website based on trigger frame is indicated.

Shown in Figure 10, shown in Fig. 10 is a kind of structural schematic diagram of trigger frame provided by the embodiments of the present application. In the embodiment shown in fig. 10, it is notified by the fields such as trigger frame type, HE-SIG-A Reserved or Reserved This trigger frame of website is the trigger frame of a specific type, i.e., this is the trigger frame of a MTS type.

In the embodiment shown in fig. 10, in the site information based on trigger frame type of the field of website one by one of trigger frame In (Trigger Dependent User Info), including HE-SIG-C length, HE-SIG-C MCS and whether allow to carry out The field of MTS transmission, wherein HE-SIG-C length refers to the HE- in the uplink PPDU that targeted sites are generated based on trigger frame SIG-C field can be the time in occupied length, HE-SIG-C length, be also possible to symbolic number, and HE-SIG-C MCS refers to Be HE-SIG-C modulating-coding strategy, if allow carry out MTS transmission field refer to targeted sites be based on trigger frame Whether the uplink PPDU of generation can carry out MTS transmission.

In the embodiment shown in fig. 10, if time number of blocks is placed in the public domain of trigger frame, targeted sites The resource unit of each frequency of uplink PPDU based on trigger frame generation is identical.For example, it is assumed that in the public affairs of trigger frame When time number of blocks in co-domain is 2, then the resource of each frequency for the uplink PPDU that targeted sites are generated based on trigger frame The time number of blocks of unit is all 2.It is of course also possible to time number of blocks is respectively put into the field of website one by one of trigger frame, Time number of blocks in the resource unit of each frequency of the uplink PPDU generated with indicating targeted sites based on trigger frame.

In the embodiment shown in fig. 10, if whether be stored in the field of website one by one of trigger frame allows to carry out The field of MTS transmission is if being, then illustrating that targeted sites can carry out MTS biography based on the uplink PPDU that trigger frame generates It is defeated；If the field for whether allowing to carry out MTS transmission in the field of website one by one for being stored in trigger frame is no, say Bright targeted sites cannot carry out MTS transmission based on the uplink PPDU that trigger frame generates.

In the embodiment shown in fig. 10, if the HE-SIG-C length being stored in the field of website one by one of trigger frame is 0, then illustrating that targeted sites cannot carry out MTS transmission based on the uplink PPDU that trigger frame generates；If being stored in trigger frame The field of website one by one in HE-SIG-C length be greater than 0, then illustrating the uplink PPDU that targeted sites are generated based on trigger frame It can carry out MTS transmission.

Step S52, access point sends trigger frame to targeted sites.

In the embodiment shown in fig. 9, scheme provided by the embodiments of the present application can use the target identification in trigger frame Indicate that there are aiming fields in uplink PPDU that targeted sites are generated based on trigger frame, so that targeted sites are based on uplink PPDU In aiming field independently determine physical layer parameter, to guarantee that targeted sites can independently be selected according to the channel conditions of oneself Select modulation system.

It is shown in Figure 11, it is the structural representation of another trigger frame provided by the embodiments of the present application shown in Figure 11 Figure.In the embodiment shown in fig. 11, trigger frame may include overall public domain, time block public domain and website domain one by one.Always Body public domain is used to indicate the public information of trigger frame, and time block public domain is used to indicate the public of each time block of uplink PPDU Information, can the number based on time block and repeat, website domain is used to indicate the information of each website in trigger frame one by one.

In the embodiment shown in fig. 11, overall public domain include trigger frame type Trigger Type, length Length, Cascade instruction Cascade Indication, carrier sense CS Required, bandwidth BW, switch-in point transmitting power AP TX are needed Power, data packet extend Packet Extension, spatial reuse Spatial Reuse, Doppler Doppler, time block TS At least one of number and the public information Trigger Dependent Common Info based on trigger frame type.

In the embodiment shown in fig. 11, time block public domain includes needing carrier sense, protection interval and long training sequence Arrange GI+LTF, multi-user multiple-input and multiple-output long training sequence MU MIMO LTF mode, very efficient long training field symbolic number Measure Number of VHE-LTF symbols, low density parity check code additional symbols block LDPC Extra Symbol At least one of Segment and time block TS length.

In the embodiment shown in fig. 11, it can indicate whether website needs carrier sense by following two mode.

First way is that the overall public domain of trigger frame includes first object field, and first object field is used to indicate Whether the targeted sites in first time block of the resource unit in the uplink PPDU based on trigger frame, which need to carry out carrier wave, is detectd It listens.

In the first way, from second time block of the resource unit in the uplink PPDU based on trigger frame to last One time block, due to occupy second time block to the last one time block each website before transmitting data, be Other websites are sending data, so needing to send in each website for occupying second time block to the last one time block When data, free time when not can guarantee channel, so each website for occupying second time block to the last one time block must Carrier sense must be carried out, so only the first object field of the public domain in trigger frame indicates the target in first time block Whether website needs carrier sense, and for other time blocks, default carries out carrier sense.

The second way is, including the second mesh in the instruction information of first time block of the time block public domain of trigger frame Marking-up section, the second aiming field are used to indicate in first time block of the resource unit in the uplink PPDU based on trigger frame Whether targeted sites need to carry out carrier sense；Second time block of the time block public domain of trigger frame is to the last one time It include third aiming field in the instruction information of block, third aiming field is used to indicate in the uplink PPDU based on trigger frame The STA of second time block to the last one time block of resource unit is required to progress carrier wave before carrying out data transmission and detects It listens.

In the second way, in order to guarantee the consistency of instruction, for the resource list of the uplink PPDU based on trigger frame Each time block in member indicates respectively.For first time block, by the second aiming field according to the actual situation come Indicate whether first time block needs carrier sense；For other time blocks, indicated by third aiming field It needs to carry out carrier sense.

It is the flow chart of another data transmission method provided by the embodiments of the present application shown in Figure 12.Side shown in Figure 12 Method embodiment and embodiment of the method shown in Fig. 9 are two embodiments that are mutually related, if embodiment of the method shown in Figure 12 It is middle to there is part identical with embodiment of the method shown in Fig. 9, then may refer to embodiment shown in Fig. 9.This method includes Following steps.

Step S61, targeted sites receive the trigger frame that access point is sent.

Wherein, the trigger frame that targeted sites receive access point transmission can be as shown in Figure 10.In implementation shown in Fig. 10 In example, this trigger frame of website is notified to be by the fields such as trigger frame type, HE-SIG-A Reserved or Reserved The trigger frame of one specific type, i.e., this is the trigger frame of a MTS type.

Trigger frame public domain and one by one carried in website field permission time block TS number, the length of aiming field Degree, aiming field MCS and whether allow carry out MTS transmission field.It, can if targeted sites is allowed voluntarily to be dispatched Using by fields such as type of coding, MCS and DCM, as reserved field, access point will not indicate website for reserved field, But the aiming field in the uplink PPDU generated by targeted sites based on trigger frame is indicated.

Step S62, targeted sites are based on trigger frame and generate uplink PPDU, and existing in trigger frame allows targeted sites to carry out When the target identification of MTS transmission, target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame that there are mesh Marking-up section, aiming field are used to indicate the quantity of time block, Mei Geshi in resource unit belonging to the targeted sites of uplink PPDU Between block length and the field voluntarily dispatched of targeted sites.

Wherein, when targeted sites identify the target identification for existing in trigger frame and targeted sites being allowed to carry out MTS transmission, Targeted sites can learn that the target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame that there are mesh Marking-up section, moreover, aiming field is used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, every The field that the length and targeted sites of a time block are voluntarily dispatched.

It is shown in Figure 13, the structural representation of the uplink PPDU generated for targeted sites based on trigger frame shown in Figure 13 Figure.If targeted sites only include a time block in some resource unit of uplink PPDU, illustrate the resource unit not Belong to MTS transmission, then there is no need to HE-SIG-C to indicate the physical layer parameter independently determined by uplink PPDU；If Target Station Point includes at least two time blocks in some resource unit of uplink PPDU, illustrates that the resource unit belongs to MTS transmission, that Uplink PPDU needs HE-SIG-C just to indicate the physical layer parameter independently determined.

Step S63, targeted sites send uplink PPDU to access point.

In the embodiment shown in fig. 12, scheme provided by the embodiments of the present application can use the target identification in trigger frame Indicate that there are aiming fields in uplink PPDU that targeted sites are generated based on trigger frame, so that targeted sites are based on uplink PPDU In aiming field independently determine physical layer parameter, to guarantee that targeted sites can independently be selected according to the channel conditions of oneself Select modulation system.

It is the flow chart of another data transmission method provided by the embodiments of the present application shown in Figure 14.This method include with Lower step.

Step S71, access point generates multi-user multiple time block physical layer protocol data unit MU MTS PPDU, MU MTS PPDU includes overall public domain, time block public domain and website domain, overall public domain are used to indicate MU MTS PPDU one by one Public information, time block public domain is used to indicate the public information of each time block in MU MTS PPDU, and website domain is used one by one The information of the website of each resource unit storage in instruction MU MTS PPDU.

Incorporated by reference to shown in Figure 15, the structural schematic diagram shown in figure 15 for a kind of MU MTS PPDU.In MU shown in figure 15 In MTS PPDU, MU MTS PPDU includes overall public domain, time block public domain and website domain, overall public domain are used for one by one Indicate that the public information of MU MTS PPDU, time block public domain are used to indicate the public letter of each time block in MU MTS PPDU Breath, website domain is used to indicate the information of the website of each resource unit storage in MU MTS PPDU one by one.

In the embodiment shown in fig. 15, overall public domain includes uplink or downlink transfer UL/DL, length Length, transmission opportunity TXOP, spatial reuse Spatial Reuse, bandwidth BW, instruction forward error control before filling because Field Pre-FEC Padding Factor of son, data packet extension disambiguate bit PE Disambiguity, Doppler Doppler, TS number of time block, the modulation of efficient signaling field B and coding strategy inventory HE-SIG-B MCS list, instruction Efficient signaling field B whether use dual carrier modulation inventory HE-SIG-B DCM list, instruction efficient signaling field B whether into The symbolic number or multi-user's multiple-input and multiple-output of inventory HE-SIG-B the compression list and HE-SIG-B of row compression At least one of MU-MIMO user bill of quantities.

Wherein, time block public domain corresponding to the website positioned at different time block and the one by one HE- where website domain SIG-B can use different MCS, therefore can be by the HE-SIG-B MCS, HE-SIG-B DCM, HE- of multiple time blocks SIG-B compression is respectively formed a list.It is corresponding that HE-SIG-B MCS list is used to indicate each time block The MCS of HE-SIG-B；HE-SIG-B DCM list is used to indicate whether the corresponding HE-SIG-B of each time block uses DCM； HE-SIG-B compression list is used to refer to whether HE-SIG-B corresponding to each time block uses compression mould Formula.The symbol that HE-SIG-B symbolic number or MU-MIMO user number list are used to indicate corresponding HE-SIG-B of each time is long The number of users of MU-MIMO corresponding to degree or each time block.

In the embodiment shown in fig. 15, time block public domain includes TS length, protection interval and long training sequence GI+ LTF, indicate whether to use the symbolic number Number of VHE-LTF of Space Time Coding STBC, very efficient long training sequence It is used to refer to when symbols, low density parity check code with the presence or absence of additional symbol LDPC Extra Symbol Segment At least one of with resource unit allocation RU allocation.

It is shown in Figure 16, it is the structural schematic diagram of another MU MTS PPDU shown in Figure 16.Figure 16's and Figure 15 The difference of the structural schematic diagram of MU MTS PPDU is, for time block public domain and one by one website field, when can be by some Between block public domain put together instruction with the domain of website one by one of website included in the time block.

Step S72, access point sends MU MTS PPDU to targeted sites.

In the embodiment shown in fig. 14, MU MTS PPDU provided by the embodiments of the present application is three layer structure, MU MTS PPDU includes overall public domain, time block public domain and website domain, overall public domain are used to indicate the public affairs of MU MTS PPDU one by one Co-information, time block public domain are used to indicate the public information of each time block in MU MTS PPDU, and website domain is for referring to one by one Show the information of the website of each resource unit storage in MU MTS PPDU.Due to MU MTS PPDU provided by the embodiments of the present application Using the MTS signaling instruction structure of more flexible tri-layer, so when the MU MTS PPDU is suitable for more flexible multiple Between block resource allocation.

Optionally, when the targeted sites of MU MTS PPDU occupy at least two resource units, mesh in MU MTS PPDU The instruction information of labeling station point is used to indicate at least two resource units one physical layer service data PSDU of unified carrying Or different PSDU is carried respectively.

The first situation: targeted sites occupy multiple resource units, moreover, multiple resource units use identical physical layer Parameter is uniformly encoded, then multiple resource units load the same PSDU.

Second situation: targeted sites occupy multiple resource units, and still, each resource unit that targeted sites occupy is equal Different types of data are used for transmission, moreover, each resource unit that targeted sites occupy has robustness and rate etc. Different requirement, then each resource unit that targeted sites occupy needs that different physical layer parameters is taken to be compiled respectively Code, so multiple resource units that targeted sites occupy load different PSDU.

In order to distinguish both the above situation, a bit can be increased in the field of website one by one of MU MTS PPDU, So that bit instruction targeted sites go to receive and dispatch according to 1 PSDU also according to multiple PSDU.It is of course also possible in MU MTS In the public field of PPDU, bit map is formed for each website, to indicate respectively both the above situation.

It is the flow chart of another data transmission method provided by the embodiments of the present application shown in Figure 17.This method include with Lower step.

Step S81, access point generates PPDU, when the targeted sites of PPDU occupy at least two resource units, in PPDU The instruction information of targeted sites is used to indicate at least two resource units one PSDU of unified carrying or respectively carrying difference PSDU.

Step S82, access point sends PPDU to targeted sites.

In the embodiment shown in Figure 17, when the targeted sites of PPDU occupy at least two resource units, Ke Yi Increase a bit in the field of website one by one of PPDU, so that the bit indicates unified carrying at least two resource units One PSDU carries different PSDU respectively.

It is a kind of schematic diagram of data transmission device provided by the embodiments of the present application shown in Figure 18.Figure 18 is corresponding for Fig. 3 Installation practice, content identical with Fig. 3 refers to the corresponding embodiment of Fig. 3 in Figure 18.Referring to Fig.1 8, which passes Defeated device comprises the following modules:

PPDU generation module 31, for generating PPDU, there are target identifications in the site information of the targeted sites of PPDU When, target identification is used to indicate the length of time block in resource unit belonging to targeted sites.

Sending module 32, for sending PPDU to targeted sites.

In the embodiment shown in Figure 18, when there is multiple time blocks in a resource unit, it can use target identification The length of time block in resource unit belonging to targeted sites is indicated, so as to flexibly distribute each time in resource unit The length of block.Therefore, scheme provided by the embodiments of the present application is adapted to the transmission demand under different scenes.

Optionally, PPDU generation module 31, specifically for there are target marks in the site information of the targeted sites of PPDU When knowledge, target identification is used to indicate in PPDU there are aiming field, and aiming field is used to indicate resource list belonging to targeted sites The length of each time block in member.

Optionally, PPDU generation module 31, the space configuration information specifically for the targeted sites in PPDU are target mark When knowledge, target identification is used to indicate total symbol of website quantity and resource unit in the resource unit according to belonging to targeted sites Number determines the length of the time block in resource unit where targeted sites.

Optionally, PPDU generation module 31, the space configuration information specifically for the targeted sites in PPDU are target mark When knowledge, target identification is used to indicate total symbolic number and the target identification corresponding time of the resource unit according to belonging to targeted sites Length factor determines the length of the time block in resource unit where targeted sites.

Optionally, the corresponding target information of target identification is used to indicate the empty time stream number of each time block in resource unit.

Optionally, when the targeted sites of PPDU occupy at least two resource units, the instruction letter of targeted sites in PPDU Breath is used to indicate at least two resource units one PSDU of unified carrying or carries different PSDU respectively.

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 19.Figure 19 is Figure 14 pairs The Installation practice answered, content same as figure 14 4 corresponding embodiment referring to Figure 1 in Figure 19.Referring to Fig.1 9, the number It is comprised the following modules according to transmitting device:

PPDU generation module 41 includes overall public domain, time block public affairs for generating MU MTS PPDU, MU MTS PPDU Co-domain and one by one website domain, overall public domain are used to indicate the public information of MU MTS PPDU, and time block public domain is used to indicate The public information of each time block in MU MTS PPDU, website domain is used to indicate each resource unit in MU MTS PPDU one by one The information of the website of storage；

Sending module 42, for sending MU MTS PPDU to targeted sites.

In the embodiment shown in Figure 19, MU MTS PPDU provided by the embodiments of the present application is three layer structure, MU MTS PPDU includes overall public domain, time block public domain and website domain, overall public domain are used to indicate the public affairs of MU MTS PPDU one by one Co-information, time block public domain are used to indicate the public information of each time block in MU MTS PPDU, and website domain is for referring to one by one Show the information of the website of each resource unit storage in MU MTS PPDU.Due to MU MTS PPDU provided by the embodiments of the present application Using the MTS signaling instruction structure of more flexible tri-layer, so when the MU MTS PPDU is suitable for more flexible multiple Between block resource allocation.

Optionally, overall public domain includes UL/DL, length Length, TXOP, Spatial Reuse, BW, Pre-FEC Padding Factor, PE Disambiguity, Doppler, TS numbers, HE-SIG-B MCS list, HE-SIG-B DCM List, HE-SIG-B compression list and HE-SIG-B symbolic number or MU-MIMO user bill of quantities at least It is a kind of.

Optionally, time block public domain include TS length, GI+LTF, STBC, Number of VHE-LTF symbols, At least one of LDPC Extra Symbol Segment and RU allocation.

Optionally, when the targeted sites of MU MTS PPDU occupy at least two resource units, mesh in MU MTS PPDU The instruction information of labeling station point is used to indicate at least two resource units one PSDU of unified carrying or carries respectively different PSDU。

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 20.Figure 20 is Fig. 9 pairs The Installation practice answered, content identical with Fig. 9 refers to the corresponding embodiment of Fig. 9 in Figure 20.Referring to Figure 20, the data Transmitting device comprises the following modules:

Trigger frame generation module 51, for generating trigger frame, when in trigger frame in the presence of allowing targeted sites progress multiple Between block MTS transmit target identification when, target identification is used to indicate in the uplink PPDU that targeted sites are generated based on trigger frame and deposits In aiming field, aiming field is used to indicate the quantity of time block in resource unit belonging to the targeted sites of uplink PPDU, every The field that the length and targeted sites of a time block are voluntarily dispatched；

Sending module 52, for sending trigger frame to targeted sites.

In the embodiment shown in Figure 20, scheme provided by the embodiments of the present application can use the target identification in trigger frame Indicate that there are aiming fields in uplink PPDU that targeted sites are generated based on trigger frame, so that targeted sites are based on uplink PPDU In aiming field independently determine physical layer parameter, to guarantee that targeted sites can independently be selected according to the channel conditions of oneself Select modulation system.

Optionally, trigger frame includes overall public domain, time block public domain and website domain one by one；

Optionally, overall public domain includes first object field, and first object field is used to indicate based on the upper of trigger frame Whether the targeted sites in first time block of the resource unit in row PPDU need to carry out carrier sense.

It optionally, include the second aiming field, the second mesh in the instruction information of first time block of time block public domain Whether marking-up section is used to indicate the targeted sites in first time block of the resource unit in the uplink PPDU based on trigger frame It needs to carry out carrier sense；Second time block of time block public domain include into the instruction information of the last one time block Third aiming field, third aiming field are used to indicate second time of the resource unit in the uplink PPDU based on trigger frame The STA of block to the last one time block is required to carry out carrier sense before carrying out data transmission.

Optionally, overall public domain includes Trigger Type, Length, Cascade Indication, CS Required, BW, AP TX Power, Packet Extension, Spatial Reuse, Doppler, TS numbers and At least one of Trigger Dependent Common Info.

Optionally, time block public domain includes needing carrier sense, GI+LTF, MU MIMO LTF mode, Number of At least one of VHE-LTF symbols, LDPC Extra Symbol Segment and TS length.

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 21.Figure 21 is Figure 12 pairs The Installation practice answered, content identical with Figure 12 2 corresponding embodiment referring to Figure 1 in Figure 21.Referring to Figure 21, the number It is comprised the following modules according to transmitting device:

Receiving module 61, for receiving the trigger frame of access point transmission.

Uplink PPDU generation module 62, for generating uplink PPDU based on trigger frame, existing in trigger frame allows target When website carries out the target identification of MTS transmission, target identification is used to indicate the uplink PPDU that targeted sites are generated based on trigger frame In there are aiming field, aiming field is used to indicate the number of time block in resource unit belonging to the targeted sites of uplink PPDU The field that amount, the length of each time block and targeted sites are voluntarily dispatched.

Sending module 63, for sending uplink PPDU to access point.

In the embodiment shown in Figure 21, scheme provided by the embodiments of the present application can use the target identification in trigger frame Indicate that there are aiming fields in uplink PPDU that targeted sites are generated based on trigger frame, so that targeted sites are based on uplink PPDU In aiming field independently determine physical layer parameter, to guarantee that targeted sites can independently be selected according to the channel conditions of oneself Select modulation system.

It is the schematic diagram of another data transmission device provided by the embodiments of the present application shown in Figure 22.It, should referring to Figure 22 Device includes processor 71 and memory 72, wherein is stored with the operational order that processor 71 is able to carry out in memory 72, locates The operational order in the reading memory 72 of device 71 is managed for realizing shown in above-mentioned Fig. 3, Fig. 4, Fig. 6, Fig. 8, Fig. 9, Figure 12 and Figure 14 Method.

It should be noted that it is the alternative embodiment that the application is introduced, art technology that the application, which provides embodiment, Personnel on this basis, can be designed that more embodiments, therefore no longer repeat herein completely.

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be with In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or Communication connection can be electrical property, mechanical or other forms.

Unit may or may not be physically separated as illustrated by the separation member, shown as a unit Component may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networks On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

If function is realized in the form of SFU software functional unit and when sold or used as an independent product, can store In a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words to existing Having the part for the part or the technical solution that technology contributes can be embodied in the form of software products, the computer Software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be personal meter Calculation machine, server or network equipment etc.) or processor (processor) execute each embodiment method of the application whole Or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey The medium of sequence code.

More than, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and it is any to be familiar with Those skilled in the art within the technical scope of the present application, can easily think of the change or the replacement, and should all cover Within the protection scope of the application.Therefore, the protection scope of the application should be subject to the protection scope in claims.

Claims

1. a kind of data transmission method, which is characterized in that the described method includes:

Access point generates physical layer protocol data unit PPDU, and there are targets in the site information of the targeted sites of the PPDU When mark, the target identification is used to indicate the length of time block in resource unit belonging to the targeted sites；

Described access point sends the PPDU to the targeted sites.

2. data transmission method according to claim 1, which is characterized in that in the website letter of the targeted sites of the PPDU There are when target identification in breath, the target identification is used to indicate the length of time block in resource unit belonging to the targeted sites Degree, comprising:

There are when target identification in the site information of the targeted sites of the PPDU, the target identification is used to indicate described There are aiming field in PPDU, the aiming field is used to indicate each time block in resource unit belonging to the targeted sites Length.

3. data transmission method according to claim 1, which is characterized in that in the website letter of the targeted sites of the PPDU There are when target identification in breath, the target identification is used to indicate the length of time block in resource unit belonging to the targeted sites Degree, comprising:

When the space configuration information of the targeted sites of the PPDU is target identification, the target identification is used to indicate according to institute The total symbolic number for stating website quantity and the resource unit in resource unit belonging to targeted sites determines the resource unit Described in time block where targeted sites length.

4. data transmission method according to claim 1, which is characterized in that in the website letter of the targeted sites of the PPDU There are when target identification in breath, the target identification is used to indicate the length of time block in resource unit belonging to the targeted sites Degree, comprising:

When the space configuration information of the targeted sites of the PPDU is target identification, the target identification is used to indicate according to institute The total symbolic number and the corresponding time span factor of the target identification for stating resource unit belonging to targeted sites determine the money The length of time block where targeted sites described in source unit.

5. data transmission method according to claim 3 or 4, it is characterised in that:

The corresponding target information of the target identification is used to indicate the empty time stream number of each time block in the resource unit.

6. data transmission method according to claim 1, which is characterized in that occupied at least in the targeted sites of the PPDU When two resource units, the instruction information of targeted sites described in the PPDU is used to indicate at least two resource unit One physical layer service data PSDU of unified carrying carries different PSDU respectively.

7. a kind of data transmission method, which is characterized in that the described method includes:

Access point generates the multiple time block physical layer protocol data unit MU MTS PPDU of multi-user, the MU MTS PPDU packet It includes overall public domain, time block public domain and website domain, the totality public domain is used to indicate the MU MTS PPDU's one by one Public information, the time block public domain are used to indicate the public information of each time block in the MU MTS PPDU, it is described by A website domain is used to indicate the information of the website of each resource unit storage in the MU MTS PPDU；

Described access point sends the MU MTS PPDU to targeted sites.

8. data transmission method according to claim 7, which is characterized in that it is described totality public domain include uplink or To difference before downlink transfer UL/DL, length Length, transmission opportunity TXOP, spatial reuse Spatial Reuse, bandwidth BW, instruction Field Pre-FEC Padding Factor of fill factor before mistake control, data packet extension disambiguate bit PE Disambiguity, Doppler Doppler, TS number of time block, the modulation of efficient signaling field B and coding strategy inventory HE- Whether SIG-B MCS list, instruction efficient signaling field B use dual carrier modulation inventory HE-SIG-BDCM list, instruction high The symbolic number or more of inventory HE-SIG-B compression list and HE-SIG-B that whether effect signaling field B is compressed At least one of user's multiple-input and multiple-output MU-MIMO user bill of quantities.

9. data transmission method according to claim 7, which is characterized in that the time block public domain include TS length, Protection interval and long training sequence GI+LTF, indicate whether to use the symbol of Space Time Coding STBC, very efficient long training sequence It is used to refer to when number Number of VHE-LTF symbols, low density parity check code with the presence or absence of additional symbol LDPC At least one of Extra Symbol Segment and resource unit allocation RU allocation.

10. data transmission method according to claim 7, which is characterized in that in the targeted sites of the MU MTS PPDU When occupying at least two resource units, the instruction information of targeted sites described in the MU MTS PPDU be used to indicate it is described extremely It is unified in few two resource units to carry a PSDU or carry different PSDU respectively.

11. a kind of data transmission method, which is characterized in that the described method includes:

Access point generates trigger frame, and existing in the trigger frame allows targeted sites to carry out the mesh that multiple time block MTS are transmitted When mark mark, the target identification is used to indicate in the uplink PPDU that the targeted sites are generated based on the trigger frame that there are mesh Marking-up section, the aiming field are used to indicate time block in resource unit belonging to the targeted sites of the uplink PPDU At least one of the field that quantity, the length of each time block and the targeted sites are voluntarily dispatched；

Described access point sends the trigger frame to the targeted sites.

12. data transmission method according to claim 11, which is characterized in that the trigger frame include overall public domain, Time block public domain and one by one website domain；

The totality public domain is used to indicate the public information of the trigger frame；

The time block public domain is used to indicate the public information of each time block of uplink PPDU；

The domain of website one by one is used to indicate the information of each website in the trigger frame.

13. data transmission method according to claim 12, it is characterised in that:

The totality public domain includes first object field, and the first object field is used to indicate based on the upper of the trigger frame Whether the targeted sites in first time block of the resource unit in row PPDU need to carry out carrier sense.

14. data transmission method according to claim 12, it is characterised in that:

It include the second aiming field, second target word in the instruction information of first time block of the time block public domain Section is used to indicate the targeted sites in first time block of the resource unit in the uplink PPDU based on the trigger frame Whether need to carry out carrier sense；

Second time block of the time block public domain includes third target into the instruction information of the last one time block Field, the third aiming field are used to indicate second time of the resource unit in the uplink PPDU based on the trigger frame The STA of block to the last one time block is required to carry out carrier sense before carrying out data transmission.

15. data transmission method according to claim 11, which is characterized in that the totality public domain includes trigger frame class Type Trigger Type, Length, cascade instruction Cascade Indication, need carrier sense CS Required, BW, Switch-in point transmitting power AP TX Power, data packet extension Packet Extension, Spatial Reuse, Doppler, when Between in TS number of block and public information Trigger Dependent Common Info based on trigger frame type at least one Kind.

16. data transmission method according to claim 11, which is characterized in that the time block public domain includes needing to carry Wave listens to, protection interval and long training sequence GI+LTF, multi-user multiple-input and multiple-output long training sequence MU MIMOLTF mode, At least one of Number of VHE-LTF symbols, LDPC Extra Symbol Segment and TS length.

17. a kind of data transmission method, which is characterized in that the described method includes:

Targeted sites receive the trigger frame that access point is sent；

The targeted sites are based on the trigger frame and generate uplink PPDU, and existing in the trigger frame allows the targeted sites When carrying out the target identification of MTS transmission, the target identification is used to indicate what the targeted sites were generated based on the trigger frame There are aiming field in uplink PPDU, the aiming field is used to indicate money belonging to the targeted sites of the uplink PPDU The field that the quantity of time block, the length of each time block and the targeted sites are voluntarily dispatched in source unit；

The targeted sites send the uplink PPDU to described access point.

18. a kind of data transmission device, which is characterized in that described device includes:

PPDU generation module, for generating PPDU, there are when target identification in the site information of the targeted sites of the PPDU, The target identification is used to indicate the length of time block in resource unit belonging to the targeted sites；

Sending module, for sending the PPDU to the targeted sites.

19. data transmission device according to claim 18, it is characterised in that:

The PPDU generation module, specifically in the site information of the targeted sites of the PPDU there are when target identification, The target identification is used to indicate in the PPDU there are aiming field, and the aiming field is used to indicate the targeted sites institute The length of each time block in the resource unit of category.

20. data transmission device according to claim 18, it is characterised in that:

The PPDU generation module, when the space configuration information specifically for the targeted sites in the PPDU is target identification, The target identification is used to indicate website quantity and the resource unit in the resource unit according to belonging to the targeted sites Total symbolic number determine the length of the time block where targeted sites described in the resource unit.

21. data transmission device according to claim 18, it is characterised in that:

The PPDU generation module, when the space configuration information specifically for the targeted sites in the PPDU is target identification, The target identification be used to indicate the resource unit according to belonging to the targeted sites total symbolic number and the target identification pair The time span factor answered determines the length of the time block where targeted sites described in the resource unit.

22. the data transmission device according to claim 20 or 21, it is characterised in that:

23. data transmission device according to claim 18, which is characterized in that the targeted sites of the PPDU occupy to When few two resource units, the instruction information of targeted sites described in the PPDU is used to indicate at least two resource unit One PSDU of middle unified carrying carries different PSDU respectively.

24. a kind of data transmission device, which is characterized in that described device includes:

PPDU generation module, for generating MU MTS PPDU, the MU MTS PPDU is public including overall public domain, time block Domain and one by one website domain, the totality public domain are used to indicate the public information of the MU MTS PPDU, and the time block is public Domain is used to indicate the public information of each time block in the MU MTS PPDU, and the domain of website one by one is used to indicate the MU The information of the website of each resource unit storage in MTS PPDU；

Sending module, for sending the MU MTS PPDU to targeted sites.

25. data transmission device according to claim 24, which is characterized in that the totality public domain includes UL/DL, length Spend Length, TXOP, Spatial Reuse, BW, Pre-FEC Padding Factor, PE Disambiguity, Doppler, TS numbers, HE-SIG-B MCS list, HE-SIG-B DCM list, HE-SIG-B compression list At least one of with the symbolic number of HE-SIG-B or MU-MIMO user bill of quantities.

26. data transmission device according to claim 24, which is characterized in that the time block public domain includes TS long Degree, GI+LTF, STBC, Number of VHE-LTF symbols, LDPC Extra Symbol Segment and RU At least one of allocation.

27. data transmission device according to claim 24, which is characterized in that in the Target Station of the MU MTS PPDU When point occupies at least two resource units, the instruction information of targeted sites described in the MU MTS PPDU is used to indicate described It is unified at least two resource units to carry a PSDU or carry different PSDU respectively.

28. a kind of data transmission device, which is characterized in that described device includes:

Trigger frame generation module, for generating trigger frame, existing in the trigger frame allows targeted sites to carry out multiple times Block MTS transmission target identification when, the target identification be used to indicate the targeted sites generated based on the trigger frame it is upper There are aiming field in row PPDU, the aiming field is used to indicate resource belonging to the targeted sites of the uplink PPDU At least one of the field that the quantity of time block, the length of each time block and the targeted sites are voluntarily dispatched in unit；

Sending module, for sending the trigger frame to the targeted sites.

29. data transmission device according to claim 28, which is characterized in that the trigger frame include overall public domain, Time block public domain and one by one website domain；

30. data transmission device according to claim 29, it is characterised in that:

31. data transmission device according to claim 29, it is characterised in that:

32. data transmission device according to claim 28, which is characterized in that the totality public domain includes Trigger Type、Length、Cascade Indication、CS Required、BW、AP TX Power、Packet Extension、 At least one of Spatial Reuse, Doppler, TS numbers and Trigger Dependent Common Info.

33. data transmission device according to claim 28, which is characterized in that the time block public domain includes needing to carry Wave listens to, GI+LTF, MU MIMO LTF mode, Number of VHE-LTF symbols, LDPC Extra Symbol At least one of Segment and TS length.

34. a kind of data transmission device, which is characterized in that described device includes:

Uplink PPDU generation module, for generating uplink PPDU based on the trigger frame, existing in the trigger frame allows institute When stating the target identification of targeted sites progress MTS transmission, the target identification is used to indicate the targeted sites and is based on the touching It sends out in the uplink PPDU that frame generates there are aiming field, the aiming field is used to indicate the Target Station of the uplink PPDU The field that the quantity of time block, the length of each time block and the targeted sites are voluntarily dispatched in resource unit belonging to point；

Sending module, for sending the uplink PPDU to described access point.

35. a kind of data transmission device characterized by comprising processor and memory, wherein be stored with place in memory The operational order that reason device is able to carry out, the operational order that processor is read in memory are any one for realizing claim 1 to 6 Method described in.

36. a kind of data transmission device characterized by comprising processor and memory, wherein be stored with place in memory The operational order that reason device is able to carry out, it is any for realizing claim 7 to 10 that processor reads the operational order in memory Method described in one.

37. a kind of data transmission device characterized by comprising processor and memory, wherein be stored with place in memory The operational order that reason device is able to carry out, it is any for realizing claim 11 to 16 that processor reads the operational order in memory Method described in one.

38. a kind of data transmission device characterized by comprising processor and memory, wherein be stored with place in memory The operational order that reason device is able to carry out, processor read the operational order in memory for realizing the side described in claim 17 Method.