WO2019140974A1

WO2019140974A1 - Data transmission control method and apparatus, data transmission device and storage medium

Info

Publication number: WO2019140974A1
Application number: PCT/CN2018/112503
Authority: WO
Inventors: 位宁; 吕开颖; 韩志强
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-01-17
Filing date: 2018-10-29
Publication date: 2019-07-25
Also published as: CN110061802A

Abstract

Disclosed in the present invention are a data transmission control method and apparatus, a data transmission device and a storage medium. In the process of multi-user data transmission, content padding is performed, according to a standard frame length, on a data frame to be transmitted of at least one user of the multiple users, and after the content padding, the frame lengths of data frames to be transmitted of various users of the multiple users are the same. The data frames to be transmitted of the various users are sent.

Description

Data transmission control method, device, data transmission device and storage medium

Cross-reference to related applications

The present application is filed on the basis of the Chinese Patent Application No. PCT-A--------

Technical field

The present invention relates to the field of communications, and in particular, to a data transmission control method, apparatus, data transmission device, and storage medium.

Background technique

When Frequency Division Multiple Access (FDMA) technology is applied to multi-user transmission, data frames are not aligned among multiple users (that is, the frame length of the data frame is different), and some users end the data transmission in advance. phenomenon. Therefore, if some users end the data transmission ahead of time, the user signals on the remaining occupied bandwidth are likely to no longer meet the transmission requirements due to the power swell. In addition, the behavior of some users to end the data transmission in advance is also likely to cause fragmentation of the band resources and lead to a decrease in system transmission efficiency. Although timely signal power adjustment can alleviate the above problems, its operation complexity and implementation cost are relatively high.

Summary of the invention

In view of this, the embodiments of the present invention are directed to a data transmission control method, apparatus, data transmission device, and storage medium, which can solve the problem that some users end data transmission in advance during multi-user data transmission.

An embodiment of the present invention provides a data transmission control method, including:

The content of the data frame to be transmitted of the at least one user of the multiple users is filled according to the standard frame length, and the frame length of the data frame to be transmitted of each user in the multiple users is consistent after the content is filled;

Sending a data frame to be transmitted of each user.

The embodiment of the invention further provides a multi-user data transmission control device, comprising:

a padding processing module, configured to perform content filling on a data frame to be transmitted of at least one of the plurality of users according to a standard frame length, and the frame length of the data frame to be transmitted of each user in the multiple users is consistent after the content is filled;

The sending control module is configured to send the data frame to be transmitted of each user.

An embodiment of the present invention further provides a data transmission device, where the data transmission device includes a processor, a memory, and a communication bus;

The communication bus is configured to implement connection communication between the processor and the memory;

The processor is configured to execute one or more programs stored in a memory to implement the steps of the data transfer control method as described above.

To solve the above technical problem, an embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores one or more programs, and the one or more programs are executed by one or more processors. To implement the steps of the data transmission control method as described above.

The beneficial effects of using the embodiments of the present invention are:

According to the data transmission control method, the device, the data transmission device, and the storage medium provided by the embodiment of the present invention, in the multi-user data transmission process, the content of the data frame to be transmitted of at least one of the multiple users is filled according to the standard frame length, so that the content is filled. The frame length of the data frames to be transmitted of each user in the multi-user after the content filling process is consistent, and then the data frames to be transmitted of each user are transmitted; since the lengths of the data frames transmitted by the users in the multiple users are the same, In the multi-user data transmission process, the frame length of the data frame transmitted by some users is shorter than other users, which leads to the early termination of data transmission, thereby avoiding the power adjustment of the transmission device due to the early termination of data transmission by some users. It satisfies the requirements of the transmission power limitation, and the fragmentation of the frequency resources caused by the partial termination of data transmission by some users, resulting in a decrease in system transmission efficiency; the control of multi-user data transmission is simplified, and the reliability of multi-user data transmission is improved.

DRAWINGS

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

2 is a schematic flowchart of content filling of a data frame to be transmitted of at least one user according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another content filling of a data frame to be transmitted of at least one user according to an embodiment of the present disclosure;

4 is a schematic diagram of a data receiving process according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a data transmission control apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure;

FIG. 7 is a first schematic diagram of filling a wireless data frame transmission medium layer according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram 2 of filling a wireless data frame transmission medium layer according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic diagram 3 of filling a wireless data frame transmission medium layer according to an embodiment of the present invention;

10 is a schematic diagram 1 of physical layer filling of a wake-up wireless data frame according to an embodiment of the present invention;

FIG. 11 is a schematic diagram 2 of a physical layer filling of a wake-up wireless data frame according to an embodiment of the present invention;

12 is a schematic diagram 1 of filling a physical layer and a transmission medium layer of a wake-up wireless data frame according to an embodiment of the present invention;

FIG. 13 is a schematic diagram 2 of filling a physical layer and a transmission medium layer of a wake-up wireless data frame according to an embodiment of the present invention;

FIG. 14 is a schematic diagram 3 of filling a physical layer and a transmission medium layer of a wake-up wireless data frame according to an embodiment of the present invention;

FIG. 15 is a schematic diagram 4 of filling a physical layer and a transmission medium layer of a wake-up wireless data frame according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The data transmission control method provided in this embodiment is applicable to multi-user transmission based on FDMA technology, and is also applicable to multi-user transmission based on other communication technologies. The data transmission control method provided in this embodiment is shown in FIG. 1 and includes:

S101: The content of the data frame to be transmitted of the at least one user of the multiple users is filled according to the standard frame length, and the frame length of the data frame to be transmitted of each user in the multiple users is consistent after the content is filled.

S102: Send a data frame to be transmitted of each user.

It should be understood that S101 in this embodiment is necessarily performed before the data frame transmission of each user in the multi-user. In this embodiment, the content of the data frames to be transmitted of the users in the multiple users may be specifically determined according to the specific application scenario, and the content of the data frames to be transmitted of all users may be filled, or only Some of the users' data frames to be transmitted are filled with content. For example, in this embodiment, the standard frame length may be set to be greater than or equal to the maximum original frame length of the data frame to be transmitted of each user in the multi-user.

For ease of understanding, the following two examples are used to determine which users need to be filled with data frames to be transmitted as an example.

Example 1: As shown in FIG. 2, content filling of a data frame to be transmitted of at least one user of multiple users in this example includes:

S201: Acquire an original frame length of a data frame to be transmitted of each user in the multi-user, and select a longest original frame length as the first standard frame length.

S202: The content of the to-be-transmitted data frame of each user in which the original frame length of the data frame to be transmitted is smaller than the length of the first standard frame is filled with content, and the frame length of the to-be-transmitted data frame is equal to the first standard frame length.

In the first example, the content of the data frame to be transmitted of the user whose original frame length of the transmission data frame is smaller than the length of the first standard frame needs to be filled; the user whose original length of the transmission data frame is equal to the first standard frame length is not required. The data frame to be transmitted is subjected to content filling processing.

Example 2: Referring to FIG. 3, content filling of a data frame to be transmitted of at least one user of multiple users in this example includes:

S301: Acquire a preset second standard frame length.

The second standard frame length preset in this example is greater than or equal to the maximum original frame length of the data frame to be transmitted of each user in the multi-user; the method for obtaining the maximum original frame length is shown in S201.

S302: The content of the to-be-transmitted data frame of each user in which the original frame length of the data frame to be transmitted is smaller than the second standard frame length is filled in the content of the multi-user, and the frame length of the to-be-transmitted data frame is equal to the second standard frame length.

In an application scenario, the preset second standard frame length may be specifically set to be equal to the maximum original frame length, as long as the maximum original frame length can be accurately obtained in advance. In another application scenario, the preset second standard frame length may be set to be greater than the maximum original frame length. In this case, the content of the data frame to be transmitted of all users needs to be filled.

Of course, in an example of the embodiment, before performing S101, it may be determined whether the original frame lengths of the data frames to be transmitted of each user in the multiple users are equal, and if they are equal, that is, the data frames of the users are aligned. In this case, the content filling process may not be performed; if not, the content filling of the data frame to be transmitted of at least one of the multiple users in S101 is performed.

It should be understood that in an example of the present embodiment, in some cases, content filling may be performed even if it is determined that the original frame lengths of the data frames to be transmitted of the users of the plurality of users are equal. For example, in a case where the length of the second standard frame is set to be greater than the maximum original frame length, even if it is determined that the original frame lengths of the data frames to be transmitted of each user in the multiple users are equal, the data frames to be transmitted of each user may be performed. The content is filled to be equal to the second standard frame length. Of course, depending on the specific application scenario, the padding step in S101 may not be performed in this case.

It should be understood that the multiple users in this embodiment refer to two or more users.

In this embodiment, the content filled in the S101 is filled with the content including at least one of signaling content, a synchronization sequence, and information content.

For example, in the embodiment, when the data frame to be transmitted is filled, if the length of the data frame after the padding is changed to be the same as the length of the set frame, the filled content may be any content. For example, the filled content may be composed of information content that does not contain any signaling content, and the filled content may also be composed only of signaling content, or the filled content is composed of signaling content and information content. In this embodiment, the filled information content may be redundant content that does not carry any useful data, or may be effective content that carries useful data. The signaling content in this embodiment may refer to signaling content (that is, content having signaling function) carrying any valid content indication, including, for example, but not limited to, a padding length indication, a padding type indication, and whether there is a padding content indication. The padding time indication and the padding mode indication; the synchronization sequence in this embodiment may be any content that can be synchronized.

It should be understood that, in some application scenarios of the embodiment, when the signaling content to be filled in the data frame to be filled is filled, the filled signaling content may not be included in the filled content according to the application scenario. However, only the filled information content is used as the content of the padding; of course, as shown in the above analysis, in some application scenarios, the padded signaling content may also be included in the padded content.

In some application scenarios in this embodiment, the content padding content in S101 includes a wake-up wireless data subframe, where the wake-up wireless data subframe is composed of a wake-up frame preamble sequence and a wake-up frame payload. In some application scenarios, corresponding user groups can be set in different wake-up wireless data subframes, thereby implementing multi-user group cascading through one wake-up wireless data frame.

In this embodiment, the length of the content to be transmitted for the data frame to be transmitted that needs to be content-filled may be determined according to the difference between the original frame length of the data frame to be transmitted and the frame length that is required after the padding. For example, by using the first standard frame length or the second standard frame length, the original frame length of the data frame to be transmitted to be filled is subtracted, and the content length required for the data frame to be transmitted is obtained.

In this embodiment, performing content filling on the data frame to be transmitted of at least one of the multiple users includes:

Content filling is performed on at least one of a physical layer and a transmission medium layer of at least one user's data frame to be transmitted.

That is, in this embodiment, for the data frame to be transmitted that needs to be padded, content filling may be performed on at least one layer of the physical layer and the transmission medium layer of the data frame to be transmitted. For example, content filling may be performed only in the physical layer of the data frame to be transmitted, or content filling may be performed only in the transmission medium layer of the data frame to be transmitted, or content filling may be performed on the transmission medium layer of the data frame to be transmitted at the same time. . It should be understood that, in this embodiment, the data frames to be transmitted of each user that needs to be filled may be filled at the same position of the same layer, or may be filled at different positions of different layers. For example, it is assumed that the data frames to be transmitted of the user A, the user B, and the user C of the multi-user are required to be filled, and may be filled in the physical layer or the transmission medium layer of the data frames of the three users to be transmitted. It may be filled in the physical layer of the data frame to be transmitted of the user A, filled in the transmission medium layer of the data frame of the user B to be transmitted, and the content is filled at the same time in the physical layer and the transmission medium layer of the user C. It should be understood that, for each user who needs to perform content filling, specifically, what content of the data frame to be transmitted of the user is specifically filled may be flexibly set according to factors such as a specific application scenario.

For example, in one example, when content filling of a data frame to be transmitted of at least one of the plurality of users includes content filling at a transmission medium layer of the data frame of the at least one user, the padded content includes signaling At least one of content and information content. The signaling content in this embodiment refers to content having various signaling functions. When the signaling content is filled in this embodiment, the padding signaling content may be a complete signaling, or may include incomplete partial signaling. For example, when the length that needs to be padded is less than the length of one complete signaling, The filled signaling content is a non-complete signaling. Correspondingly, when filling the information content, it may also be filled with a complete information content, or may only be filled with part of the information content, which may be flexibly determined according to the specific application scenario. In this embodiment, in some application scenarios, only the information content or the signaling content may be filled in the data frame to be transmitted, and the information content and the corresponding signaling content may be simultaneously filled, and the filled signaling content may be calculated. Fill in the content, or you can not count the padding content.

For another example, in an example, performing content filling on a data frame to be transmitted of at least one of the multiple users includes performing content filling on a physical layer of the data frame of the at least one user to be transmitted, and the filled content includes signaling content. At least one of a synchronization sequence and information content.

As shown in the analysis above, the padded signaling content, synchronization sequence, and information content may be complete signaling content, synchronization sequence, and information content, or may be only part of the signaling content, synchronization sequence, and information content, and may be populated. The signaling content may be included in the padding content or may not be included in the padding content.

In an example, when content filling of a data frame to be transmitted is simultaneously filled in its physical layer and transmission medium layer, the content filled in the physical layer may be at least one of signaling content, synchronization sequence, and information content. For example, the content filled in the transmission medium layer may be at least one of signaling content and information content. The specific combination of the physical layer and the transport medium layer fill content can be flexibly set. For example, the information content is filled in the physical layer, the signaling content is filled in the transmission medium layer, or the signaling content is filled in the physical layer, the information content is filled in the transmission medium layer, or the signaling content and the synchronization sequence are filled in the physical layer. Fill in the information content and more.

In this embodiment, in order to improve the security and reliability of the data transmission, when the content filled in the data frame to be transmitted includes the signaling content, the content of the padding further includes, for verifying the padded signaling content. Signaling verification information. That is, the signaling verification information is separately set for the padding signaling content for verifying the signaling content, which can improve the security and reliability of the data transmission to a large extent. In some examples, signaling verification information may not be set for the padded signaling content, or the original verification information and the like in the data frame to be transmitted may be shared. It should be understood that the corresponding verification information may also be set for other content of the padding in this embodiment to verify it.

In this embodiment, when the content filled in the data frame to be transmitted includes signaling content, the signaling content includes at least one indication information for indicating whether there is at least one of padding, padding length, and padding type. In this embodiment, an indication of a function can be implemented by using an indication information. For example, three functions of filling, filling length, and filling type can be respectively indicated by three independent instructions; one indication information can also be implemented in combination. An indication of various functions, for example, an indication of whether there is a filling and a filling type by setting an indication information, or an indication of a filling type and a filling length by setting an indication information. It can be seen that the setting information of the indication information can also be flexibly set according to the specific application scenario.

The steps shown in FIG. 1 in this embodiment may be performed by various data sending node devices, including, but not limited to, a base station, a wireless access node (AP), and the like. The filling step of S101 in Fig. 1 can also be performed by a dedicated data filling device, and the data transmitting step in S102 is performed by the data transmitting node. For the corresponding data receiving node, the data receiving process is as shown in FIG. 4, including:

S401: Receive a data frame transmitted by the data transmission device by the multi-user data transmission control method as described above.

S402: Extract the content by parsing the data frame.

In this embodiment, after the receiver receives the data frame, if the data frame is a content-filled data frame, when the receiver only cares about the valid part of the data frame (ie, content other than the padding part) The valid part of the content can be identified and extracted from the received data frame. When the recipient also needs to obtain the filled part of the content, the received data frame can be identified and the required part of the filled content can be extracted accordingly. Just fine.

The multi-user data transmission method provided in this embodiment can flexibly fill content of data frames to be transmitted of at least one user of multiple users, so that the frame length of the data frame to be transmitted of each user in the multi-user after content filling processing Consistently, then the data frames to be transmitted of each user are transmitted; the filling method is simple and flexible, and the lengths of the data frames transmitted by the users in the multi-user after the filling process are the same, and will not appear again during the data transmission process. Some users end the data transmission in advance because the frame length of the data frames transmitted by them is shorter than other users, thereby avoiding the power adjustment of the transmission equipment by some users to end the data transmission in advance to meet the transmission power limitation requirements, and because some users Early termination of data transmission results in fragmentation of the band resources, resulting in a decrease in system transmission efficiency; it can simplify the control of multi-user data transmission and improve the reliability of multi-user data transmission.

The multi-user data transmission control method provided in this embodiment is applicable to multi-user transmission based on FDMA technology, and is applicable to multi-user transmission based on other communication technologies, and is also applicable to various data transmission scenarios under various communication technologies. . In order to facilitate the understanding of the present invention, the present embodiment is described by taking a specific data transmission scenario as an example on the basis of the foregoing embodiment.

The data transmission scenario of the example of this embodiment is based on a wireless device with a Wake-Uup Receiver (WUR) for data transmission as an example. The wake-up receiver setting further reduces the energy consumption of the wireless device in standby mode and increases the life of the wireless device power supply. When the wireless device is in standby mode, in order to reduce energy consumption, a wireless local area network (WLAN) wireless device that integrates the wake-up receiver can turn off the main module (here, the WLAN module) with a large power consumption. At the same time, the low power consumption wake-up receiver is enabled. If the wake-up receiver receives the wake-up message within the next time, the wireless device that triggered the trigger turns on the WLAN module again to complete the necessary information interaction. Introducing the wake-up receiver into the wireless device, while realizing power saving, also greatly alleviates the system delay caused by the failure to respond to the burst message in time due to the complete shutdown of the main module.

In one example, the bearer that wakes up the wake-up message received by the receiver is a wake-up wireless data frame. In one example, the wake-up wireless data frame is composed of a WLAN preamble, a wake-up frame preamble sequence, and a wake-up frame payload. Different from the traditional WLAN system, the modulation method used in the wake-up part of the wake-up wireless data frame (including the wake-up frame preamble sequence and the wake-up frame load) is Orthogonal Frequency Division Multiplexing (OFDM) + Binary Key-Open Keying OOK, for example, in OOK. The OFDM symbol is transmitted in the 'On' state, and no information is transmitted in the 'Off' state. Information bits '1' or '0' may be represented by one or more 'On' and/or 'Off' states, for example, a single 'On' state indicates '1' and a single 'Off' state indicates '0'; or, Continuous 'On' and 'Off' indicate '1', continuous 'Off' and 'On' indicate '0' (eg applying Manchester coding). Therefore, after receiving the wake-up wireless data frame of the corresponding rate, the wake-up receiver may demodulate the wake-up wireless data frame according to the rate of the wake-up wireless data frame. In order to improve the transmission efficiency of the wake-up wireless data frame, FDMA technology can be used to wake up the transmission of the wireless data frame.

Therefore, in an example of the embodiment, the data frame to be transmitted of each user in the multi-user may be a wake-up wireless data frame. When padding the awake wireless data frame that needs to be padded, at least one of the physical layer and the transmission medium layer of the awake wireless data frame may be padded. For example, it may be filled in the transmission medium layer of the awake wireless data frame, and the filled content may be at least one of the information content and the signaling content. In some application scenarios, only the information content may be filled, and in some application scenarios, only the information may be filled. The content may be filled in the information content and the signaling content in some scenarios; for example, the physical layer of the awake wireless data frame may be filled, and the filled content may be one of signaling content, synchronization sequence, and information content. Or a combination of at least two; of course, content filling can also be performed at the physical layer and the transmission medium layer of the wake-up wireless data frame according to a specific application scenario.

According to the above analysis, in the embodiment, when the content layer is filled in the physical layer and/or the transmission medium layer of the awake wireless data frame, the specific filling position in the physical layer and/or the transmission medium layer can also be flexibly set. For example, when the content layer of the at least one user's data frame to be transmitted is content-filled, the method may include filling at least one of signaling content and information content in a wake-up preamble of the wake-up wireless data frame (ie, the data frame to be transmitted), For example, at least one signaling characterizing at least one of content filling, padding type, padding length, etc., may be padded in the wake-up preamble of the awake wireless data frame.

For another example, performing content filling on the wake-up wireless data frame (ie, the data frame to be transmitted) of at least one of the multiple users includes a physical layer and a transmission medium layer of the wake-up wireless data frame (ie, the data frame to be transmitted) of the at least one user When content filling is performed, the method includes: filling, in the data frame to be transmitted, a wake-up wireless data subframe, where the wake-up wireless data subframe is composed of a wake-up frame preamble sequence and a wake-up frame payload, and the padded wake-up wireless data frame includes multiple wake-ups. a wireless data sub-frame, and in some application scenarios, a different user group may be set in different wake-up wireless data sub-frames (the wake-up wireless data sub-frame in this embodiment may include all target devices that need to receive the sub-frame) Identification information (ID), the identification information of these target devices constitutes a user group, and one user group includes identification information of one or more target objects, thereby implementing multi-user group cascading through a wake-up wireless data frame.

It should be understood that the content filling and filling of the physical layer and/or the transmission medium layer of the awake wireless data frame and the location of the specific filling in the embodiment may be flexibly set according to specific application scenarios and design requirements. And with the data frame format changing due to different data transmission environments and protocol updates, the flexible adjustment of the adaptation can be performed following the change of the data frame format.

This embodiment provides a data transmission control apparatus, as shown in FIG. 5, including:

The padding processing module 51 is configured to perform content filling on the data frame to be transmitted of at least one of the plurality of users according to the standard frame length, and the frame length of the data frame to be transmitted of each user in the multi-user is consistent after the content is filled; This is shown in the above embodiment, and details are not described herein again.

The sending control module 52 is configured to send a data frame to be transmitted of each user.

It should be understood that the multi-user data transmission control apparatus in this embodiment can be independently set, and the functions of the above-described padding processing module 51 and the transmission control module 52 can be implemented by the same controller and communication module. The multi-user data transmission control device can also be integrated on the data transmission device, and the functions of the padding processing module 51 and the transmission control module 52 are implemented by the processor of the data transmission device.

The embodiment further provides a data transmission device, which may be a base station or an AP, etc. As shown in FIG. 6, the data transmission device includes a processor 61, a memory 62, and a communication bus 63;

a communication bus 63 configured to implement connection communication between the processor 61 and the memory 62;

The processor 61 is configured to execute one or more programs stored in the memory to implement the steps of the multi-user data transmission control method as shown in the above embodiments.

The embodiment further provides a computer readable storage medium applicable to various communication devices, the computer readable storage medium storing one or more programs, the one or more programs being processed by one or more The program is executed to implement the steps of the multi-user data transmission control method as shown in the above embodiment.

In order to facilitate the understanding of the embodiments of the present invention, the present embodiment still uses the data frame to be transmitted by the user as the wake-up wireless data frame, and takes an exemplary wake-up wireless data frame structure as an example, and further exemplifies the present invention by combining several content filling methods. Description.

Example 1: This example is illustrated by taking the content filling of the transmission medium layer MAC of the wake-up wireless data frame as an example.

Referring to FIG. 7, the padding content (ie, additional redundant information bits, that is, the padded information content) shown in the figure is added to the information to be transmitted, that is, Padding information is located at the MAC layer; In this example, the MAC layer also carries explicit length signaling (such as padding length Padding length signaling or field in Figure 7) to indicate the data length of the padding information. The padding length signaling or field may be used to multiplex the original field in the awake wireless data frame, or may be a newly added field. It should be understood that in some application scenarios, the padding length Padding length may also indicate the remaining data length of the data frame after the padding portion is removed, that is, indirectly indicating the length of the padding portion. In some application scenarios, padding length Padding length equal to zero indicates no padding; padding length non-zero indicates padding and length is the non-zero value. In some application scenarios, part or all of the padding length signaling itself may also belong to the padding content. In some application scenarios, only the padding information may be included in the content filled in the awake wireless data frame, or the whole or part of the padding length Padding length signaling may be included in the content filled in the awake wireless data frame.

Referring to FIG. 8, the padding information (ie, additional redundant information bits, that is, the padded information content) shown in the figure is also added to the information to be transmitted, but the signaling shown in FIG. 8 is padding. Type Padding type, padding type Padding type field is used to indicate the presence or absence of padding and padding length. In some embodiments, the Padding type may be set to 1 to indicate that there is padding in the currently received wake-up wireless data frame and the padding length is L1; the Padding type is 0 to indicate that there is no padding in the currently received wake-up radio data frame. In some embodiments, the Padding type is 1 and 2 indicates that there is padding in the wake-up wireless data frame and the padding length is L1 and L2, respectively; the Padding type is 0 indicating that there is no padding in the currently received wake-up radio data frame. For the embodiment with more padding types, the corresponding indication manner may be analogized according to the foregoing embodiment, as long as the correspondence table of the padding type Padding type and the corresponding padding length L is set in advance. For example, a correspondence table can be seen as shown in Table 1 below. In some application scenarios, only the padding information may be included in the content filled in the awake wireless data frame, or the whole or part of the padding type padding type signaling may be included in the content filled in the awake wireless data frame. in.

Table 1

Padding typePadding type	填充长度Fill length
00	0(即无填充)0 (ie no padding)
11	L1L1
22	L2L2
33	L3L3
……......	……......

Referring to FIG. 9, the padding information (ie, additional redundant information bits, that is, the padded information content) shown in the figure is also added to the information to be transmitted, in this example, when waking up the wireless data frame. When the valid information (ie, the part of the wake-up wireless data frame that does not include the padded content) is fixed, the information content may be filled only when padding in the wake-up wireless data frame, and the corresponding indication signaling (eg, padding length, etc.) is not carried. Of course, the signaling content for indicating whether there is any padding may also be filled, for example, it may still be characterized by Padding type signaling (not shown in FIG. 9), and the Padding type is 1 indicating that there is padding in the currently received wake-up wireless data frame. ; Padding type is 0 to indicate that there is no padding in the currently received wake-up wireless data frame.

Example 2: This example is illustrated by taking the content filling of the transmission medium layer MAC of the wake-up wireless data frame as an example.

Referring to FIG. 10, the padding information (ie, the extra redundant information bits, that is, the padded information content) in this example is located at the port physical layer (PHY) of the wake-up wireless data frame, and the content of the padding may not be Carrying the indication padding presence and padding length signaling content, but only including the information content. This setup method is suitable for scenarios where the receiving site does not have intraframe sleep requirements. At this point, the receiving station can re-enter the synchronization process after ending the reception of the wake-up wireless data frame (excluding the padding portion). In some application scenarios, setting the Padding information does not include a synchronization signal (such as waking up a synchronization signal in the preamble, etc.) to avoid false synchronization.

Of course, in the example of content filling of the physical layer (PHY layer) of the awake wireless data frame shown in FIG. 10, PHY layer signaling indicating whether there is a padding and padding length may also be carried. As described above, according to the length of the content to be filled in the wake-up wireless data frame, the PHY layer signaling itself may be part or all of the padding content; and in some application scenarios, the indication may be carried in the wake-up preamble Wake-up preamble field. Unfilled PHY layer signaling. After identifying the specific location where the fill and fill are located, the receiving site can go directly to the sleep state at the beginning of the fill content. Of course, if the receiving site has no intraframe sleep requirement, it can be in normal working state.

Referring to FIG. 11, the information content subpadding filled in this example is also located at the physical layer (PHY layer) of the awake wireless data frame, and the padding content includes a synchronization sequence SYNC* for assisting in locating the end of the frame. This padding method is more suitable for scenarios where the receiving site has intraframe sleep requirements but cannot confirm the effective frame length. Referring to FIG. 11, the relationship between the synchronization sequence SYNC* in the padding content and the synchronization sequence SYNC of the wake-up preamble portion may be the same, complementary or independent of each other. The actual relationship can be flexibly set according to the specific application scenario. For example, in some application scenarios, SYNC* or a combination of SYNC and SYNC* can be set to indicate the presence or absence of padding. In some application scenarios, the padding content is partially or entirely composed of SYNC* sequences.

Example 3: This example is illustrated by taking the content filling and corresponding signaling carrying of the transmission medium layer MAC and the physical layer PHY of the wake-up wireless data frame as an example.

For example, as shown in FIG. 12, the signaling medium layer is filled with signaling content, and the physical layer is filled with information content; or the physical layer is filled with signaling, the transmission medium layer is filled with information content, or the physical layer is filled with signaling and information content, Any one of information content and signaling is filled in the transmission medium layer, and the like. For example, in one scenario, indication signaling (eg, Padding type field) may be carried in the transport medium layer MAC to indicate padding presence and padding length. The specific implementation manner of the signaling can be referred to as shown in FIG. 7 to FIG. 9 above. In some application scenarios, only the whole or part of the padded signaling content may be included in the content filled in the wake-up wireless data frame, or may not be included in the content filled in the wake-up wireless data frame.

In an application scenario, when the length of the data frame to be filled in the awake wireless data frame is greater than or equal to the wake-up wireless data subframe (the wake-up wireless data subframe is composed of the wake-up frame preamble sequence and the wake-up frame payload), the padded content may also be To wake up the wireless data sub-frame, it can also be composed of wake-up wireless data sub-frames and other content. As shown in FIG. 13 , the wake-up wireless data frame includes two wake-up wireless data subframes, and the latter wake-up wireless data subframe is a filled wake-up wireless data subframe, and different wake-up wireless data subframes can correspond to unused users. group.

Referring to FIG. 14, in this example, the padding content in the physical layer includes padding length signaling (this padding mode is applicable to a scenario where the padding length is variable and there is an intraframe sleep requirement) and information content (subpadding), some applications. In the scenario, a specific signaling field (eg, padding type) is filled in the MAC layer to indicate the presence or absence of padding. At this time, after receiving the wake-up wireless data frame, if the relevant signaling indicates that the padding exists and has its own intra-frame sleep requirement, the station receives and decodes (filling the content) the padding length signaling to obtain an accurate padding length. information. In this example, the fill length signaling can independently set and verify the information to complete the check (not shown in Figure 14). In some application scenarios, if the padding does not exist or the station itself does not need to perform intra-frame sleep, the receiving station ends in the receiving to the MAC part (the end point is after the frame check sequence (FCS) ends, before the padding part starts) After that, you can re-enter the synchronization state.

Referring to FIG. 15, the transmission medium layer and the physical layer of the wake-up wireless data frame are filled with information content, as shown in the padding information A (PaddingA) and the padding information B (PaddingB) in FIG. 15, respectively. In this case, the manner in which the signaling content of the padding and the padding length is filled and the specific padding manner can be referred to the manner shown in the above figures, and details are not described herein again.

The multi-user data transmission control device and the data transmission device provided by the embodiment can be aligned and filled in a flexible filling manner for the data frames to be transmitted of each user in the multi-user (that is, the data frame length of each user to be transmitted after being filled) Consistent) post-transmission, which can avoid some problems caused by the transmission of data frames shorter than other users and the end of data transmission, which simplifies the control of multi-user data transmission and improves multi-users. The reliability of data transmission.

Obviously, those skilled in the art should understand that the modules or steps of the above embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed among multiple computing devices. On the network, optionally, they can be implemented by program code executable by the computing device, so that they can be stored in a computer storage medium (Read-Only Memory (ROM)/Random Access Memory (Random Access). Memory, RAM, disk, optical disk) are executed by a computing device, and in some cases, the steps shown or described may be performed in an order different from that herein, or they may be separately fabricated into individual integrated circuits. Modules, or multiple modules or steps of them, are implemented as a single integrated circuit module. Therefore, the invention is not limited to any particular combination of hardware and software.

The above is a detailed description of the embodiments of the present invention in conjunction with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It is to be understood by those skilled in the art that the present invention may be made in a manner that is not limited to the scope of the present invention.

Claims

A data transmission control method includes:

The content of the data frame to be transmitted of the at least one user of the multiple users is filled according to the standard frame length, and the frame length of the data frame to be transmitted of each user in the multiple users is consistent after the content is filled;

Sending a data frame to be transmitted of each user.
The data transmission control method according to claim 1, wherein said standard frame length is greater than or equal to a maximum original frame length of a data frame to be transmitted of each of said plurality of users.
The data transmission control method according to claim 1, wherein the data frame to be transmitted is a wake-up wireless data frame.
The data transmission control method according to any one of claims 1 to 3, wherein the content filling of the data frame to be transmitted includes:

Content filling is performed on at least one of a physical layer and a transmission medium layer of the data frame to be transmitted.
The data transmission control method according to any one of claims 1 to 3, wherein the content-filled content includes at least one of a signaling content, a synchronization sequence, and information content.
The data transmission control method according to any one of claims 1 to 3, wherein the content padding filled content includes a wake-up wireless data subframe, and the wake-up wireless data subframe is caused by a wake-up frame preamble sequence and a wake-up frame load composition.
The data transmission control method according to claim 5, wherein the signaling content includes at least one indication information for indicating at least one of a filling, a filling length, and a filling type.
The data transmission control method according to claim 5, wherein said content padding filled content further includes signaling verification information for verifying said signaling content.
A data transmission control device includes:

a padding processing module, configured to perform content filling on a data frame to be transmitted of at least one of the plurality of users according to a standard frame length, and the frame length of the data frame to be transmitted of each user in the multiple users is consistent after the content is filled;

The sending control module is configured to send the data frame to be transmitted of each user.
A data transmission device comprising a processor, a memory and a communication bus;

The communication bus is configured to implement connection communication between the processor and the memory;

The processor is configured to execute one or more programs stored in a memory to implement the steps of the data transmission control method according to any one of claims 1 to 8.
A storage medium, the storage medium comprising a stored program, wherein the program is executed to execute the data transfer control method according to any one of claims 1 to 8.