WO2023024109A1

WO2023024109A1 - Information transmission method and apparatus, device, and storage medium

Info

Publication number: WO2023024109A1
Application number: PCT/CN2021/115147
Authority: WO
Inventors: 徐彦超; 王泷
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2023-03-02
Also published as: CN117413619A

Abstract

Embodiments of the present application relate to the technical field of communications, and in particular to an information transmission method and apparatus, a device, and a storage medium. The method comprises: a first device sends first information to a second device, the first information being used for requesting to perform downlink transmission, wherein the first information comprises a padding field (710). According to the embodiments of the present application, in an information interaction phase before performing downlink transmission between the first device and the second device, the padding field is added in information sent by the first device to the second device, such that a padding duration is increased for the second device.

Description

Information transmission method, device, equipment and storage medium

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to an information transmission method, device, device, and storage medium.

Background technique

In order to improve throughput, more and more devices support MIMO (Multiple Input Multiple Output) technology, that is, support more spatial streams.

But more spatial streams also mean more power consumption. In order to better balance power consumption, WiFi (Wireless Fidelity, Wireless Fidelity) system introduces dynamic SMPS (Spatial Multiplexing Power Save, spatial multiplexing energy saving) mechanism. Under the dynamic SMPS mechanism, STA (Station, station) can first use one link to listen to the channel, and close other links; when AP (Access Point, access point) needs to perform downlink transmission, AP can communicate with STA first Interact through this link; the STA opens other links during the process of interacting through this link, and then the AP can use the maximum spatial flow capacity negotiated with the STA in advance for downlink transmission.

At present, how to ensure that the STA can open other links under the dynamic SMPS mechanism needs further discussion and research.

Contents of the invention

Embodiments of the present application provide an information transmission method, device, equipment, and storage medium. Described technical scheme is as follows:

On the one hand, an embodiment of the present application provides an information transmission method, which is applied to a first device, and the method includes:

Sending first information to the second device, where the first information is used to request downlink transmission; where the first information includes a padding field.

On the other hand, an embodiment of the present application provides an information transmission method, which is applied to a second device, and the method includes:

Receive first information sent by the first device, where the first information is used to request downlink transmission; where the first information includes a padding field.

In another aspect, the embodiment of the present application provides an information transmission device, which is set in the first device, and the device includes:

The first sending module is configured to send first information to the second device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.

In another aspect, the embodiment of the present application provides an information transmission device, which is set in the second device, and the device includes:

The first receiving module is configured to receive first information sent by the first device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.

In another aspect, the embodiment of the present application provides a first device, where the first device includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to send first information to the second device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.

Optionally, the processor includes an ASIC (Application Specific Integrated Circuit, application specific integrated circuit).

In another aspect, the embodiment of the present application provides a second device, the second device includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive first information sent by the first device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.

Optionally, the processor includes an ASIC.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of the first device, so as to realize the above-mentioned first device Side information transmission method.

Optionally, the processor includes an ASIC.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of the second device, so as to realize the above-mentioned second device Side information transmission method.

Optionally, the processor includes an ASIC.

In another aspect, an embodiment of the present application provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the first device, it is used to implement the above-mentioned first device side Information transfer method.

In another aspect, an embodiment of the present application provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the second device, it is used to implement the above-mentioned second device side Information transfer method.

In another aspect, an embodiment of the present application provides a computer program product, which is used to implement the above information transmission method on the first device side when the computer program product runs on the first device.

In another aspect, an embodiment of the present application provides a computer program product, which is used to implement the above information transmission method on the second device side when the computer program product runs on the second device.

In another aspect, the embodiment of the present application provides a computer program, which is used to implement the above information transmission method on the first device side when the computer program runs on the first device.

In another aspect, an embodiment of the present application provides a computer program, which is used to implement the above information transmission method on the second device side when the computer program runs on the second device.

The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

By adding a padding field in the information sent by the first device to the second device in the information interaction stage before the downlink transmission between the first device and the second device, it is realized to increase the padding duration for the second device. Moreover, in the embodiment of the present application, since the second device can open more links to receive downlink transmission at the earliest moment when it starts to receive the filling field, the second device can use the filling time to open more links to ensure that the first The second device can correctly receive the subsequent multi-link downlink transmission performed by the first device, which improves transmission reliability.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

Fig. 2 is a schematic diagram of a system architecture provided by another embodiment of the present application;

Fig. 3 is the schematic diagram of the load of the frame format of the SMPS frame that one embodiment of the present application provides;

FIG. 4 is a schematic diagram of interaction between an AP and a STA provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of interaction between an AP and an STA provided in another embodiment of the present application;

FIG. 6 is a schematic diagram of interaction between an AP and an STA provided in another embodiment of the present application;

FIG. 7 is a flowchart of an information transmission method provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of interaction between an AP and an STA provided in another embodiment of the present application;

Fig. 9 is a schematic diagram of the load of the frame format of the SMPS frame provided by another embodiment of the present application;

FIG. 10 is a schematic diagram of interaction between an AP and an STA provided in another embodiment of the present application;

Fig. 11 is a block diagram of an information transmission device provided by an embodiment of the present application;

Fig. 12 is a block diagram of an information transmission device provided by another embodiment of the present application;

FIG. 13 is a block diagram of an information transmission device provided in another embodiment of the present application;

Fig. 14 is a block diagram of an information transmission device provided in another embodiment of the present application;

Fig. 15 is a structural block diagram of a first device provided by an embodiment of the present application;

Fig. 16 is a structural block diagram of a second device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

Please refer to FIG. 1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a first device 10 and a second device 20 .

The first device 10 refers to a device capable of providing a wireless communication function. Optionally, the first device 10 may be implemented as: an AP, an AP MLD, a wireless router, a wireless network controller, a base station controller, a base station transceiver, an eNB (eNodeB , evolved Node B), base station, transceiver function, wireless connection point, connection point, gNB (gNodeB). In practical applications, the implementation form of the first device 10 can be determined in combination with the system architecture. In one example, the system architecture is implemented as a WiFi (Wireless Fidelity, Wireless Fidelity) system, and the first device 10 can be implemented as an AP, AP MLD , a wireless router, a wireless network controller, etc.; in another example, the system architecture is implemented as an NR (New Radio, new air interface) system, and the first device 10 can be implemented as a gNB, a base station, and the like.

The second device 20 refers to a device capable of network access. Optionally, the second device 20 may include STA, STA MLD, terminal device, user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station , mobile station, remote station, remote terminal, mobile equipment, wireless communication equipment, user agent or user device, cellular phone, cordless phone, SIP (Session Initiation Protocol, session initiation protocol) phone, WLL (Wireless Local Loop, wireless local loop Road) station, PDA (Personal Digita1 Assistant, personal digital processing), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, etc. In practical applications, the implementation form of the second device 20 can be determined in combination with the system architecture. In one example, the system architecture is implemented as a WiFi system, and the second device 20 can be implemented as a STA, STA MLD, terminal device, etc.; in another In an example, the system architecture is implemented as an NR system, and the second device 20 may be implemented as a terminal device, a user equipment, a remote terminal, and the like.

In the embodiment of the present application, the second device 20 can access the network through the wireless communication function provided by the first device 10 , or it can be said that the second device 20 can be connected to the first device 10 . In one example, the system architecture is implemented as a WiFi system, then the second device 20 can be connected to the first device 10 via a WiFi-compliant wireless link to obtain a universal connection to the Internet or other wide area networks. The embodiment of the present application does not limit the number of first devices 10 and second devices 20 distributed in the system architecture. In an example, one or more first devices 10 are distributed in one system architecture, and one or more second devices 20 are distributed in one system architecture. Generally, in a system architecture, the number of second devices 20 is greater than or equal to the number of first devices 10 , that is, one first device 10 can provide wireless communication functions for one or more second devices 20 .

It should be noted that in this embodiment of the present application, the second device 20 may also be implemented as the first device 10 in some cases, in other words, the second device 20 may also provide a wireless communication function in some cases. Exemplarily, when the second device 20 is implemented as a user equipment capable of turning on a hotspot or soft AP (soft access point), and the first device 10 is implemented as a wireless router, the second device 20 can be connected to the first device 10, and in the case that the second device 20 has turned on a hotspot or soft AP, other devices (such as terminal devices, computing devices, handheld devices, etc.) can also be connected to the second device 20, so that the second device 20 can be other The device provides wireless communication capabilities. It should be understood that, for ease of description, FIG. 1 only uses the first device 10 capable of providing a wireless communication function as an example for illustration, but this does not constitute a limitation to the present application.

In one example, taking the system architecture shown in FIG. 1 applied to a smart home scene as an example, as shown in FIG. 2 , a first device 10 and multiple second devices 20 are distributed in the smart home scene. Wherein, the first device 10 can be implemented as a wireless router, and the second device 20 can be implemented as smart furniture such as smart refrigerators, smart TVs, smart electric fans, smart cameras, and smart lights. Optionally, the second device 20 can be connected to the first device 10 via a WiFi-compliant wireless link, so that the first device 10 can implement network control on the second device 20 and the like.

Taking the system architecture shown in FIG. 1 implemented as a WiFi system architecture as an example, the first device 10 may be implemented as an AP (or AP MLD), and the second device 20 may be implemented as a STA (or STA MLD).

In related technologies, in order to improve throughput, more and more devices support MIMO technology, that is, support more spatial streams. However, more spatial streams also mean more power consumption. In order to better balance power consumption, the WiFi system introduces a dynamic SMPS mechanism.

Under the dynamic SMPS mechanism, a STA can first use one link to listen to the channel, and close other links; when the AP needs to perform downlink transmission, the AP can interact with the STA through this link first; In the process of link interaction, other links are opened, and then the AP can use the maximum spatial flow capacity negotiated with the STA in advance for downlink transmission. It should be understood that the links described in the embodiments of the present application are corresponding modules set up for receiving spatial streams, that is, one link is a corresponding module set up for receiving one spatial stream, and in some examples, the links are It can be called a spatial stream, or a reception chain (Reception Chain), etc., for the convenience of description, it is collectively referred to as a "link" here.

In related technologies, the STA negotiates with the AP to enable the dynamic SMPS function using SM Power Save Frame (SMPS frame). In one example, as shown in Figure 3, the load (Payload) of the frame format of SMPS frame comprises: SMPS starts (SM Power Save Enable) field, SM mode (SM Mode) field, reservation (Reserved) field. Among them, the SMPS activation field occupies 1 bit, and if the value of the SMPS activation field is 1, it is used to indicate that the STA expects to activate the SMPS mechanism; the SM mode field occupies 1 bit, and if the value of the SM mode field is 1, it is used to indicate The STA expects to activate the dynamic SMPS mechanism; the reserved field occupies 6 bits.

In the embodiment of this application, when the AP needs to perform downlink transmission, the control frame that the AP and the STA first interact through a link can be realized as RTS (Request to Send, request to send) information and CTS (Clear to Send, allow to send) The AP first uses one link to send RTS information to the STA, and the STA uses one link to send CTS information to the AP after receiving the RTS information.

Exemplarily, as shown in Figure 4, the AP and the STA first start (enable) the dynamic SMPS mechanism. After starting the dynamic SMPS mechanism, the STA first opens a link and uses this link to listen to the channel; During downlink transmission, the AP and STA exchange RTS information and CTS information through this link, that is, the AP sends RTS information to the STA through this link, and the STA passes this link after receiving the RTS information. Sending CTS information to the AP; during the process of exchanging RTS information and CTS information between the AP and the STA, the STA opens other links to use more links to perform other traffic interactions with the AP. Optionally, after a transmission interaction sequence ends, the STA switches back to one link and listens to the channel, that is, the STA only opens one link and closes other links.

In the related technology, in order to further expand the dynamic SMPS function, the control frame that the AP and the STA interact through a link first can be implemented as a Trigger frame (trigger frame) and a Response ( response) message. That is to say, the AP first uses one link to send a trigger frame to the STA to replace the RTS information, and the STA uses one link to send a response message to the AP after receiving the trigger frame to replace the CTS information. Optionally, the type of trigger frame includes but not limited to: MU (Multi User, multi-user)-RTS trigger frame, BSRP (Buffer Status Report Poll, buffer status report polling) trigger frame, BQRP trigger frame.

Exemplarily, as shown in Figure 5, the AP and the STA first start the dynamic SMPS mechanism. After starting the dynamic SMPS mechanism, the STA first opens a link and uses this link to listen to the channel; when the AP needs to perform downlink transmission , the AP and the STA exchange trigger frames and response messages through this link, that is, the AP sends a trigger frame to the STA through this link, and the STA sends a trigger frame to the AP through this link after receiving the trigger frame. Response message: During the process of the trigger frame and response message interaction between the AP and the STA, the STA opens other links to use more links for other traffic interactions with the AP. Optionally, after a transmission interaction sequence ends, the STA switches back to one link and listens to the channel, that is, the STA only opens one link and closes other links.

In related technologies, after STA and AP start the dynamic SMPS mechanism, no matter whether they use RTS information to interact with CTS information, or use trigger frames to interact with response messages, the STA replies (CTS information or response message) to the AP. Open other links. Taking the control frame that STA and AP interact with through one link first to implement RTS information and CTS information as an example, OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) 6Mbps is used for RTS information and CTS information. Bits per second) format and data rate conditions, STA needs to open other links within 76us (milliseconds).

Exemplarily, as shown in Figure 6, after the AP sends the RTS information through one link, the STA passes through one link after the interval of SIFS (Short Inter Frame Space, short frame interval) (that is, 16us). Send CTS information to the AP. Usually, CTS information is sent at the data rate of OFDM 6Mbps, and the air interface time it occupies is 44us. After the STA replies the CTS information, the AP will perform multi-link transmission with the STA after an interval of SIFS.

In summary, STA needs to open other links within a maximum of 76us (16us+44us+16us). However, if the RTS information and the CTS information are transmitted at a higher data rate, the available time for the STA to open other links will be less. In addition, during the implementation process, the STA may not be able to open other links within such a short period of time. In this way, the STA may not be able to correctly receive the subsequent multi-link transmission of the AP, which will have a great impact on the transmission reliability; or It may cause the STA to choose not to activate the dynamic SMPS mechanism, resulting in more power consumption.

Based on this, an embodiment of the present application provides an information transmission method, which can be used to solve the above technical problem. In the following, the technical solution provided by the present application will be described through several exemplary embodiments.

Please refer to FIG. 7 , which shows a flowchart of an information transmission method provided by an embodiment of the present application. This method can be applied to the system architecture shown in FIG. 1 and FIG. 2 . The method may include at least some of the following steps.

Step 710, the first device sends first information to the second device, and the first information is used to request downlink transmission; wherein, the first information includes a padding field.

The first device is a sending device for downlink transmission, such as the first device 10 described in the above-mentioned embodiment of FIG. 1 and the embodiment of FIG. 2; the second device is a receiving device for downlink transmission, as in the above-mentioned embodiment of FIG. 1 and FIG. 2 The second device 20 described in the example. Optionally, when the technical solution provided by this application is applied to a WiFi system, the first device may be implemented as an AP (or called AP MLD), and the second device may be implemented as a STA (or called STA MLD). For other descriptions of the first device and the second device, please refer to the embodiment in FIG. 1 and the embodiment in FIG. 2 above, and details will not be repeated here.

When the first device needs to perform downlink transmission with the second device, the first device may send first information to the second device, where the first information is used to request downlink transmission. Optionally, the downlink transmission includes downlink (Downlink, DL) physical layer protocol data unit (Physical Protocol Data Unit, PPDU) transmission. Optionally, at least one link is included between the first device and the second device, and in order to better balance power consumption, in the absence of downlink transmission, the second device is on the first link of the at least one link Listen to the channel. Therefore, when the first device needs to perform downlink transmission with the second device, the first device sends the first information to the second device on the first link of the at least one link, and the second device sends the first information to the second device on the at least one link Receive the first information sent by the first device on the first link in the .

It should be understood that the links described in the embodiments of the present application are corresponding modules set up for receiving spatial streams, that is, one link is a corresponding module set up for receiving one spatial stream, and in some examples, the links are It may be called a spatial stream, or a reception chain (Reception Chain), etc., and for the convenience of description, it is collectively referred to as a "link" in this embodiment of the application.

The embodiment of the present application does not limit the sending manner of the first information. Optionally, the first device sends a control frame to the second device, and the control frame carries the first information. In an example, the control frame may be implemented as RTS information, and the above step 710 includes: the first device sends the RTS information to the second device, and the RTS information includes the first information. In another example, the control frame can be implemented as a trigger frame (Trigger Frame), then the above step 710 includes: the first device sends the trigger frame to the second device, and the trigger frame includes the first information. Certainly, the control frame may also be implemented in a form other than the RTS information and the trigger frame, which is not limited in this embodiment of the present application.

In related technologies, the first information only includes valid data fields (Valid Fields), and the second device can open other links in at least one link except the first link at the earliest moment after receiving the first information. In order to increase the duration for the second device to open other links, or to enable the second device to open more links, in this embodiment of the application, a padding field (Padding) is added to the first information, and the second device can use Fill in the transmission time of the field to open other links.

That is to say, in an example, there is at least one link between the first device and the second device, and the first information is transmitted on the first link in the at least one link; the above method further includes: the second device At the first moment, other links in the at least one link except the first link are opened. Wherein, the moment when the second device starts to receive the filling field is the second moment; the first moment is not earlier than the second moment, that is, the first moment is equal to the second moment, or the first moment is later than the second moment. The embodiment of the present application does not limit the method of determining the first moment. Optionally, the first moment is predefined by the communication protocol. For example, in the WiFi standard protocol, it is predefined that the first moment is equal to the second moment (that is, the first moment is the second moment of the second device). start to receive the filling field); or, the first moment is determined by the specific implementation of the second device. If the second device has a stronger device capability and needs a shorter time to open other links, the second device can determine the first The time is later than the second time (that is, the first time is later than the time when the second device starts to receive the filling field).

Exemplarily, taking the application of the technical solution provided by this application in a WiFi system as an example, the first device is implemented as an AP, the second device is implemented as a STA, and the AP sends a trigger frame to the STA to request downlink transmission, as shown in Figure 8 . In the example shown in Figure 8, the trigger frame sent by the AP to the STA through one link adds a padding field after the valid data field, so that the STA can open the link except the one at the earliest when it starts to receive the padding field. other links. Compared with the related technology shown in FIG. 6 , the padding field shown in FIG. 8 adds a padding duration (Padding Duration) for the STA to increase the duration for the STA to open other links and ensure that the STA can open more links.

To sum up, in the technical solution provided by the embodiment of the present application, through the information interaction stage before the downlink transmission between the first device and the second device, a padding field is added to the information sent by the first device to the second device, Implemented to increase the filling time for the second device. Moreover, in the embodiment of the present application, since the second device can open more links to receive downlink transmission at the earliest moment when it starts to receive the filling field, the second device can use the filling time to open more links to ensure that the first The second device can correctly receive the subsequent multi-link downlink transmission performed by the first device, which improves transmission reliability.

In the above embodiments, the first device may add padding fields to the first information by itself based on the predefined communication protocol or its own implementation; The padding field is added, which is not limited in this embodiment of the application. In the following, the technical solution of "the first device adds a padding field to the first information based on the instruction of the second device" will be described.

In an example, before the foregoing step 710, the method further includes: the second device sends indication information to the first device, where the indication information is used to indicate information related to the filling field.

The second device may notify the first device of information related to the filling field by using the indication information, so that the first device sends the first information to the second device based on the indication information sent by the second device. The embodiment of this application does not limit the sending method of the indication information. Take the application of the technical solution provided by this application to the WiFi system as an example. Optionally, the second device can negotiate with the first device through the SMPS frame to start the dynamic SMPS process. , sending indication information to the first device. That is to say, optionally, the above-mentioned second device sending the indication information to the first device includes: the second device sending an SMPS frame to the first device, where the SMPS frame includes the indication information.

Based on this, in an example, as shown in Figure 9, the load (Payload) of the frame format of SMPS frame is extended to include: SMPS starts (SM Power Save Enable) field, SM mode (SM Mode) field, filling information field ( Or called "Required Padding Duration (required padding duration)"), reserved (Reserved) field. The filling information field is used to indicate information related to the filling field. In one example, the padding information field in the SMPS frame shown in Figure 9 is a part of bits selected from the reserved fields in the SMPS frame shown in Figure 3, that is to say, the SMPS frame shown in Figure 9 The number of bits is equal to that of the SMPS frame shown in FIG. 3 . In another example, the padding information field in the SMPS frame shown in Figure 9 extends the number of bits on the basis of the SMPS frame shown in Figure 3, that is, the number of bits of the SMPS frame shown in Figure 9 Greater than the number of bits of the SMPS frame shown in Figure 3. For the introduction and description of other fields of the SMPS frame, etc., please refer to the above-mentioned embodiments, and do not repeat them here.

Taking the padding information field in the SMPS frame shown in Figure 9 as an example is a part of bits selected from the reserved fields in the SMPS frame shown in Figure 3, optionally, the bits occupied by the padding information field shown in Figure 9 The number is less than or equal to the number of bits occupied by the reserved fields shown in FIG. 3 . Exemplarily, the number of bits occupied by the reserved field shown in Figure 3 is 6, and the number of bits occupied by the padding information field shown in Figure 9 is n (n is a positive integer less than or equal to 6), then the number of bits shown in Figure 9 The number of bits occupied by the reserved field is 6-n. For example, the number of bits occupied by the padding information field (information related to the padding field added in the first information) shown in FIG. 9 is equal to 1, or equal to 2, or equal to 3, or equal to 4, or equal to 5, or equal to 6 .

In the above embodiment, the information related to the padding field includes but is not limited to at least one of the following: whether to add the padding field to the first information, and the transmission duration of the added padding field. For example, the indication information sent by the second device to the first device is used to indicate whether to add a padding field in the first information. Therefore, when the indication information is used to indicate that a padding field is added to the first information, the first device A padding field is added to the first information, and the transmission duration of the padding field may be predefined by the communication protocol, or may be indicated by the second device. For another example, the indication information sent by the second device to the first device is used to indicate the transmission duration of the padding field added in the first information, or is used to indicate the addition of the padding field and the transmission duration of the padding field in the first information, Therefore, the first device adds a padding field of a corresponding number of bits to the first information according to the transmission duration of the padding field indicated by the indication information.

Taking the indication information sent by the second device to the first device as an example to indicate whether to add padding fields in the first information, and the transmission duration of the added padding fields as an example, different values of the indication information indicate different contents . In an example, the value of the indication information and the content indicated include any of the following: a first value, used to indicate that no padding field is added to the first information; a second value, used to indicate that a padding field is added to the first information padding field, and the transmission duration of the padding field is the first duration; the third value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is the second duration; the fourth value is used to indicate that the A padding field is added to the information, and the transmission duration of the padding field is the third duration; the fifth value is used to indicate that the padding field is added in the first message, and the transmission duration of the padding field is the fourth duration.

The embodiment of the present application does not specifically limit the value of the indication information and the transmission duration of the padding field. Exemplarily, the first value above is 0, the second value is 1, the third value is 2, the fourth value is 3, the fifth value is 4, the first duration is 16us, the second duration is 32us, the third duration is 64us, and the fourth duration is 128us. That is, if the value of the indication information is 0, the indication information is used to indicate that no padding field is added to the first information; if the value of the indication information is 1, the indication information is used to indicate that a padding field is added to the first information and filled The transmission duration of the field is 16us; if the value of the indication information is 2, the indication information is used to indicate that the padding field is added to the first information and the transmission duration of the padding field is 32us; if the value of the indication information is 3, the indication information is used Indicates that a padding field is added in the first information and the transmission duration of the padding field is 64us; if the value of the indication information is 4, the indication information is used to indicate that a padding field is added in the first information and the transmission duration of the padding field is 128us.

To sum up, in the technical solution provided by the embodiment of this application, the second device indicates information related to the padding field to the first device, so that the padding field sent by the first device subsequently can meet the needs of the second device, avoiding The transmission time of the padding field is too short or too long, which improves the effectiveness of the padding field.

In the following, an example is used to describe the technical solution provided by the present application. In the following example, the technical solution provided by this application is applied to a WiFi system, the first device is implemented as an AP, and the second device is implemented as an STA.

As shown in FIG. 10 , when the STA negotiates with the AP to start the dynamic SMPS, the SMPS frame sent by the STA to the AP carries indication information (filled information field). After the AP receives the SMPS frame and parses out the indication information, based on the value of the indication information, it selects the type of control frame used in the information exchange phase of a link, so that the selected control frame can meet the requirements of adding padding fields , as shown in Figure 9, the AP selects the MU-RTS trigger frame. Afterwards, the AP carries the padding field in the MU-RTS trigger frame according to the information related to the padding field indicated by the above indication information. The STA can open other links at the earliest when it starts to receive the padding field. When receiving subsequent downlink transmissions, the STA uses multiple links for reception, and after the downlink transmission ends, the STA switches back to one link to listen to the channel.

It should be noted that, in the above embodiments, the technical solutions provided by the present application are described from the perspective of interaction between the first device and the second device. In the above embodiments, the steps performed by the first device may be implemented as an information transmission method on the first device side; the steps performed by the second device may be implemented separately as an information transmission method on the second device side.

The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 11 , which shows a block diagram of an information transmission device provided by an embodiment of the present application. The apparatus has the function of realizing the above-mentioned method example on the first device side, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware. The apparatus may be the first device introduced above, or may be set in the first device. As shown in FIG. 11 , the information transmission apparatus 1100 may include: a first sending module 1110 .

The first sending module 1110 is configured to send first information to the second device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.

In an example, the first sending module 1110 is configured to: send RTS information to the second device, where the RTS information includes the first information; or send a trigger frame to the second device, the The trigger frame includes the first information.

In an example, at least one link is included between the first device and the second device; the first sending module 1110 is configured to: on a first link in the at least one link, Send the first information to the second device.

In one example, one of said links is a corresponding module configured to receive one spatial stream.

In one example, as shown in FIG. 12 , the information transmission apparatus 1100 further includes: a second receiving module 1120, configured to receive indication information sent by the second device, the indication information being used to indicate that the padding field Related information.

In an example, as shown in FIG. 12 , the second receiving module 1120 is configured to: receive an SMPS frame sent by the second device, where the SMPS frame includes the indication information.

In an example, the value of the indication information includes any of the following: a first value, used to indicate that the padding field is not added to the first information; a second value, used to indicate that the padding field is not added to the first information The padding field is added in the first information, and the transmission duration of the padding field is the first duration; the third value is used to indicate that the padding field is added in the first information, and the transmission duration of the padding field is the first duration Two durations; the fourth value is used to indicate that the padding field is added in the first information, and the transmission duration of the padding field is the third duration; the fifth value is used to indicate that in the first information The padding field is added, and the transmission duration of the padding field is a fourth duration.

In an example, the number of bits occupied by the indication information is 3.

Please refer to FIG. 13 , which shows a block diagram of an information transmission device provided by an embodiment of the present application. The apparatus has the function of realizing the above-mentioned method example on the second device side, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware. The apparatus may be the second device described above, or may be set in the second device. As shown in FIG. 13 , the information transmission device 1300 may include: a first receiving module 1310 .

The first receiving module 1310 is configured to receive first information sent by the first device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.

In an example, the first receiving module 1310 is configured to: receive RTS information sent by the first device, where the RTS information includes the first information; or receive a trigger frame sent by the first device , the trigger frame includes the first information.

In an example, at least one link is included between the first device and the second device; the first receiving module 1310 is configured to: on a first link in the at least one link, Receive the first information sent by the first device.

In an example, as shown in FIG. 14 , the information transmission apparatus 1300 further includes: a second sending module 1320, configured to send indication information to the first device, where the indication information is used to indicate that the padding field is related to Information.

In an example, as shown in FIG. 14 , the second sending module 1320 is configured to: send an SMPS frame to the first device, where the SMPS frame includes the indication information.

In an example, the number of bits occupied by the indication information is 3.

In an example, at least one link is included between the first device and the second device, and the first information is transmitted on a first link in the at least one link; as shown in FIG. 14 , the information transmission device 1300 further includes: a link opening module 1330, configured to open other links in the at least one link except the first link at a first moment; wherein, the second The moment when the second device starts to receive the filling field is the second moment; the first moment is equal to the second moment, or the first moment is later than the second moment.

In one example, one said link is a corresponding module configured to receive one spatial stream.

It should be noted that when the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Please refer to FIG. 15 , which shows a schematic structural diagram of a first device 150 provided by an embodiment of the present application. For example, the first device may be used to implement the above-mentioned information transmission method on the first device side. Specifically, the first device 150 may include: a processor 151, and a transceiver 152 connected to the processor 151; wherein:

The processor 151 includes one or more processing cores, and the processor 151 executes various functional applications and information processing by running software programs and modules. Optionally, the processor includes an ASIC (Application Specific Integrated Circuit, application specific integrated circuit).

Transceiver 152 includes a receiver and a transmitter. Optionally, the transceiver 152 is a communication chip.

In an example, the first device 150 further includes: a memory and a bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program, so as to implement various steps performed by the first device in the above method embodiments.

In addition, the memory can be implemented by any type of volatile or non-volatile storage device or their combination, and the volatile or non-volatile storage device includes but is not limited to: RAM (Random-Access Memory, Random Access Memory) and ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory ), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disk storage or other magnetic storage devices.

The transceiver 152 is configured to send first information to the second device, where the first information is used to request downlink transmission; where the first information includes a padding field.

In an example, the transceiver 152 is configured to: send RTS information to the second device, the RTS information includes the first information; or send a trigger frame to the second device, the trigger A frame includes the first information.

In an example, at least one link is included between the first device and the second device; the transceiver is configured to: transmit to the The second device sends the first information.

In an example, the transceiver 152 is further configured to: receive indication information sent by the second device, where the indication information is used to indicate information related to the padding field.

In an example, the transceiver 152 is further configured to: receive an SMPS frame sent by the second device, where the SMPS frame includes the indication information.

In an example, the number of bits occupied by the indication information is 3.

Please refer to FIG. 16 , which shows a schematic structural diagram of a second device 160 provided by an embodiment of the present application. For example, the second device may be used to implement the above-mentioned information transmission method on the second device side. Specifically, the second device 160 may include: a processor 161, and a transceiver 162 connected to the processor 161; wherein:

The processor 161 includes one or more processing cores, and the processor 161 executes various functional applications and information processing by running software programs and modules. Optionally, the processor includes an ASIC (Application Specific Integrated Circuit, application specific integrated circuit).

Transceiver 162 includes a receiver and a transmitter. Optionally, the transceiver 162 is a communication chip.

In an example, the second device 160 further includes: a memory and a bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program, so as to implement various steps performed by the second device in the above method embodiments.

The transceiver 162 is configured to receive first information sent by the first device, where the first information is used to request downlink transmission; where the first information includes a padding field.

In an example, the transceiver 162 is configured to: receive RTS information sent by the first device, where the RTS information includes the first information; or receive a trigger frame sent by the first device, the The trigger frame includes the first information.

In an example, at least one link is included between the first device and the second device; the transceiver 162 is configured to: receive the The first information sent by the first device.

In an example, the transceiver 162 is further configured to: send indication information to the first device, where the indication information is used to indicate information related to the filling field.

In an example, the transceiver 162 is further configured to: send an SMPS frame to the first device, where the SMPS frame includes the indication information.

In an example, the number of bits occupied by the indication information is 3.

In an example, at least one link is included between the first device and the second device, and the first information is transmitted on a first link in the at least one link; the processor 161 , configured to: at a first moment, open other links in the at least one link except the first link; wherein, the moment when the second device starts to receive the padding field is the second moment ; The first moment is equal to the second moment, or, the first moment is later than the second moment.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by the processor of the first device, so as to realize the information transmission on the side of the first device as described above. method.

Optionally, the processor includes an ASIC.

An embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of the second device, so as to realize information transmission on the second device side as described above. method.

Optionally, the processor includes an ASIC.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the first device, it is used to implement the above-mentioned first device side information transmission method.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the second device, it is used to implement the above-mentioned second device side information transmission method.

An embodiment of the present application further provides a computer program product, which is used to implement the above-mentioned first device side information transmission method when the computer program product runs on the first device.

An embodiment of the present application further provides a computer program product, which is used to implement the above-mentioned second device side information transmission method when the computer program product runs on the second device.

The embodiment of the present application also provides a computer program, which is used to implement the above-mentioned first device side information transmission method when the computer program is run on the first device.

The embodiment of the present application also provides a computer program, which is used to implement the above-mentioned second device side information transmission method when the computer program runs on the second device.

Those skilled in the art should be aware that, in the foregoing one or more examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above are only exemplary embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection of the application. within range.

Claims

An information transmission method, characterized in that it is applied to a first device, and the method includes:

Sending first information to the second device, where the first information is used to request downlink transmission; where the first information includes a padding field.
The method according to claim 1, wherein the sending the first information to the second device comprises:

sending a request to send RTS information to the second device, where the RTS information includes the first information;

or,

sending a trigger frame to the second device, where the trigger frame includes the first information.
The method according to claim 1 or 2, wherein at least one link is included between the first device and the second device;

The sending the first information to the second device includes:

The first information is sent to the second device on a first link of the at least one link.
The method according to claim 3, wherein one said link is a corresponding module configured to receive one spatial stream.
The method according to any one of claims 1 to 4, wherein before sending the first information to the second device, further comprising:

receiving indication information sent by the second device, where the indication information is used to indicate information related to the padding field.
The method according to claim 5, wherein the receiving the indication information sent by the second device comprises:

receiving a spatial multiplexing energy-saving SMPS frame sent by the second device, where the SMPS frame includes the indication information.
The method according to claim 5 or 6, wherein the value of the indication information includes any of the following:

The first value is used to indicate that the padding field is not added to the first information;

The second value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is the first duration;

The third value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a second duration;

The fourth value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a third duration;

The fifth value is used to indicate that the padding field is added in the first information, and the transmission duration of the padding field is a fourth duration.
The method according to any one of claims 5 to 7, wherein the number of bits occupied by the indication information is 3.
An information transmission method, characterized in that it is applied to a second device, and the method includes:

Receive first information sent by the first device, where the first information is used to request downlink transmission; where the first information includes a padding field.
The method according to claim 9, wherein the receiving the first information sent by the first device comprises:

receiving RTS information sent by the first device, where the RTS information includes the first information;

or,

receiving a trigger frame sent by the first device, where the trigger frame includes the first information.
The method according to claim 9 or 10, wherein at least one link is included between the first device and the second device;

The receiving the first information sent by the first device includes:

On the first link of the at least one link, the first information sent by the first device is received.
The method according to any one of claims 9 to 11, wherein before receiving the first information sent by the first device, further comprising:

sending indication information to the first device, where the indication information is used to indicate information related to the filled field.
The method according to claim 12, wherein the sending indication information to the first device comprises:

sending a spatial multiplexing energy-saving SMPS frame to the first device, where the SMPS frame includes the indication information.
The method according to claim 12 or 13, wherein the value of the indication information includes any of the following:

The first value is used to indicate that the padding field is not added to the first information;

The second value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is the first duration;

The third value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a second duration;

The fourth value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a third duration;

The fifth value is used to indicate that the padding field is added in the first information, and the transmission duration of the padding field is a fourth duration.
The method according to any one of claims 12 to 14, wherein the number of bits occupied by the indication information is 3.
The method according to any one of claims 9 to 15, wherein at least one link is included between the first device and the second device, and the first information is in the at least one link Transmission on the first link; the method also includes:

At a first moment, open other links in the at least one link except the first link;

Wherein, the moment when the second device starts to receive the filling field is the second moment; the first moment is equal to the second moment, or the first moment is later than the second moment.
The method according to claim 11 or 16, characterized in that one said link is a corresponding module configured to receive one spatial stream.
An information transmission device, characterized in that it is set in the first device, and the information transmission device includes:

The first sending module is configured to send first information to the second device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.
The device according to claim 18, wherein the first sending module is configured to:

sending a request to send RTS information to the second device, where the RTS information includes the first information;

or,

sending a trigger frame to the second device, where the trigger frame includes the first information.
The apparatus according to claim 18 or 19, wherein at least one link is included between the first device and the second device; the first sending module is configured to:

The first information is sent to the second device on a first link of the at least one link.
The apparatus according to claim 20, wherein one said link is a corresponding module configured to receive one spatial stream.
The device according to any one of claims 18 to 21, wherein the information transmission device further comprises:

The second receiving module is configured to receive indication information sent by the second device, where the indication information is used to indicate information related to the filling field.
The device according to claim 22, wherein the second receiving module is configured to:

receiving a spatial multiplexing energy-saving SMPS frame sent by the second device, where the SMPS frame includes the indication information.
The device according to claim 22 or 23, wherein the value of the indication information includes any of the following:

The first value is used to indicate that the padding field is not added to the first information;

The second value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is the first duration;

The third value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a second duration;

The fourth value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a third duration;

The fifth value is used to indicate that the padding field is added in the first information, and the transmission duration of the padding field is a fourth duration.
The device according to any one of claims 22 to 24, wherein the number of bits occupied by the indication information is 3.
An information transmission device, characterized in that it is set in the second device, and the information transmission device includes:

The first receiving module is configured to receive first information sent by the first device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.
The device according to claim 26, wherein the first receiving module is configured to:

receiving RTS information sent by the first device, where the RTS information includes the first information;

or,

receiving a trigger frame sent by the first device, where the trigger frame includes the first information.
The apparatus according to claim 26 or 27, wherein at least one link is included between the first device and the second device; the first receiving module is configured to:

On the first link of the at least one link, the first information sent by the first device is received.
The device according to any one of claims 26 to 28, wherein the information transmission device further comprises:

The second sending module is configured to send indication information to the first device, where the indication information is used to indicate information related to the filling field.
The device according to claim 29, wherein the second sending module is configured to:

sending a spatial multiplexing energy-saving SMPS frame to the first device, where the SMPS frame includes the indication information.
The device according to claim 29 or 30, wherein the value of the indication information includes any of the following:

A first value, used to indicate that the padding field is not added to the first information;

The second value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is the first duration;

The third value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a second duration;

The fourth value is used to indicate that the padding field is added to the first information, and the transmission duration of the padding field is a third duration;

The fifth value is used to indicate that the padding field is added in the first information, and the transmission duration of the padding field is a fourth duration.
The device according to any one of claims 29 to 31, wherein the number of bits occupied by the indication information is 3.
The apparatus according to any one of claims 26 to 32, wherein at least one link is included between the first device and the second device, and the first information is in the at least one link transmission on the first link; the information transmission device also includes:

A link opening module, configured to open other links in the at least one link except the first link at a first moment;

Wherein, the moment when the second device starts to receive the filling field is the second moment; the first moment is equal to the second moment, or the first moment is later than the second moment.
The apparatus according to claim 28 or 33, wherein one of said links is a corresponding module configured to receive one spatial stream.
A first device, characterized in that the first device includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to send first information to the second device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.
A second device, characterized in that the second device includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive first information sent by the first device, where the first information is used to request downlink transmission; wherein the first information includes a padding field.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of the first device, so as to implement the method described in any one of claims 1 to 8. Methods.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of the second device, so as to implement any one of claims 9 to 17. Methods.
A chip, characterized in that the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on the first device, it is used to implement the method according to any one of claims 1 to 8 .
A kind of chip, it is characterized in that, described chip comprises programmable logic circuit and/or program instruction, when described chip runs on the second device, is used for realizing the method as described in any one of claim 9 to 17 .
A computer program product, characterized in that, when the computer program product is run on the first device, it is used to realize the method according to any one of claims 1 to 8.
A computer program product, characterized in that, when the computer program product is run on the second device, it is used to realize the method according to any one of claims 9 to 17.
A computer program, characterized in that, when the computer program is run on the first device, it is used to realize the method according to any one of claims 1 to 8.
A computer program, which is used to implement the method according to any one of claims 9 to 17 when the computer program is run on the second device.