WO2021218239A1

WO2021218239A1 - Transmission rate switching method and related apparatus

Info

Publication number: WO2021218239A1
Application number: PCT/CN2021/071154
Authority: WO
Inventors: 眭克涵; 曹孝文; 蒋文浩; 许仕彬; 常鸣
Original assignee: 华为技术有限公司
Priority date: 2020-04-28
Filing date: 2021-01-12
Publication date: 2021-11-04
Also published as: CN113572569A; CN113572569B

Abstract

The present application provides a transmission rate switching method and a related apparatus. The method is applied to electronic equipment, and the electronic equipment comprises a first electronic device and a second electronic device. The method comprises: the second electronic device receives a first data packet sent by the first electronic device, the first data packet being used for instructing the second electronic device to perform transmission rate switching, and the switched transmission rate being a first rate; the first electronic device performs transmission rate switching according to the first rate, the switched transmission rate of the first electronic device being the first rate. Implementing the embodiments of the present application can simplify the negotiation process and improve the efficiency of transmission rate switching.

Description

Method for switching transmission rate and related device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 28, 2020, the application number is 202010352238.6, and the application title is "a method for switching transmission rate and related devices", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of communication technologies, and in particular, to a transmission rate switching method and related devices.

Background technique

With the rapid development of technology in the electronics industry, the requirements for interface transmission technology are getting higher and higher. Currently, open standards and standardized mobile industry processor interfaces (mobile industry processor interface, MIPI) formulated for mobile application processors can be used to implement data transmission.

Generally speaking, the process of switching the transmission rate is often involved when using the physical layer (PHY) interface of MIPI to transmit data. When the transmission rate is switched in the prior art, for example, the transmitter of the processor is required to send a speed cut request to the receiver of the camera. After the receiver of the processor receives the feedback information fed back by the transmitter of the camera, the processor’s The transmitter switches the transmission rate. Further, the transmitter of the processor performs capability configuration and stops transmitting data. When the receiver of the camera detects that the transmitter of the processor stops transmitting data, the receiver of the camera performs rate switching. It can be seen that in the prior art, multiple interactions are required when switching the transmission rate, which results in a complicated negotiation process and low transmission rate switching efficiency.

Summary of the invention

This application provides a transmission rate switching method and related devices, which can simplify the negotiation process and improve the transmission rate switching efficiency.

In a first aspect, a transmission rate switching method is provided, the method is applied to an electronic device, the electronic device includes a first electronic device and a second electronic device, and the method includes:

The second electronic device receives a first data packet sent by the first electronic device, where the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first rate;

The first electronic device performs transmission rate switching according to the first rate, and the transmission rate of the first electronic device after switching is the first rate.

It can be seen that in the above technical solution, the negotiation process is simplified, and the transmission rate switching efficiency is improved.

In a possible implementation manner, the first data packet includes first indication information, and the first indication information is used to indicate the first rate.

It can be seen that in the above technical solution, the use of the indication information to indicate the rate is implemented to prepare for the subsequent switching of the transmission rate of the second electronic device.

In a possible implementation manner, the first data packet further includes first forward link indication information and/or first backward link indication information, and the first data packet is also used to indicate the first forward link The second electronic device performs forward link switching and/or backward link switching, and the switched forward link is the forward link indicated by the first forward link indication information, and the switched backward The link is the backward link indicated by the first backward link indication information.

It can be seen that in the above technical solution, precise control of the switching link is achieved, and the problem of multiple interactions required for each link switching in the prior art is also avoided, the negotiation process is simplified, and the transmission rate switching efficiency is improved.

In a possible implementation manner, the first data packet is further used to instruct the second electronic device to detect that no data is being transmitted on the backward link indicated by the first backward link indication information, Switch the transmission rate according to the first data packet; or,

The first data packet is also used to instruct the second electronic device to perform transmission according to the first data packet when detecting the end of data transmission on the backward link indicated by the first backward link indication information Rate switching.

It can be seen that in the above technical solution, the data transmission on the backward link indicated by the first backward link indication information is avoided due to unreliable data transmission after the speed cut after the transmission rate is switched according to the first data packet. The problem of failure.

In a possible implementation manner, the first data packet further includes check information and a first time window. After the first electronic device performs transmission rate switching according to the first rate, the method further includes :

Sending, by the first electronic device, at least one first verification packet to the second electronic device at the first rate;

When receiving N first check packets in the first check packet within the first time window, the second electronic device sends at least one check packet to the first electronic device at the first rate A second verification packet, wherein the second verification packet is sent by the second electronic device within the first time window and the second verification packet is the second electronic device according to the Determined by the verification information, the N is an integer greater than 1;

If the N second verification packets in the second verification packet are received within the first time window, the first electronic device determines to use the first rate to send the second electronic device to the second electronic device. The device transmits data.

It can be seen that in the above technical solution, the check packet and the first time window are used to verify the reliability of the data transmission after the speed is cut, and avoid the use of the switched rate when the data transmission is unreliable after the speed cut. The second electronic device sends data.

In a possible implementation manner, the method further includes:

If the N second check packets in the second check packet are not received within the first time window, the first electronic device is using the second rate to send the signal to the second electronic device After sending the first data packet, sending the first check packet to the second electronic device again at the first rate;

When the N first check packets in the first check packet are received within the first time window, the second electronic device again uses the first rate to send the signal to the first electronic device Sending the second check packet;

If the N second verification packets in the second verification packet are not received within the first time window, the first electronic device will perform the first electronic device on the first electronic device. After the first rate is switched to the third rate, the third rate is used to send a second data packet to the second electronic device, and the second data packet is used to instruct the second electronic device to switch the transmission rate and after the switching The transmission rate is the fourth rate, the transmission rate is switched according to the fourth rate, the transmission rate after the switching of the first electronic device is the fourth rate, and the fourth rate is used to send to the second electronic device The first check packet until the first electronic device determines to use the fourth rate to transmit data to the second electronic device;

Wherein, the second rate is the rate at which the first electronic device switches the transmission rate before the first rate, the second rate is less than the first rate, and the third rate is the first electronic device. The lowest rate among the transmission rates corresponding to the device, the fourth rate is greater than the second rate and the fourth rate is less than the first rate.

It can be seen that in the above technical solution, the original rate before switching to the first rate is used to send the first data packet to the second electronic device when the data transmission is unreliable after the speed is cut. The rate negotiation failed. At the same time, when the check packet is still not received within the second time window, that is, when the data transmission is still unreliable after the speed cut, the new data packet is transmitted at the lowest rate corresponding to the device, which provides a more flexible speed cut method .

In a second aspect, a transmission rate switching device is provided, the device includes a first electronic device and a second electronic device,

The second electronic device is configured to receive a first data packet sent by the first electronic device, and the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first A rate

The first electronic device is configured to perform transmission rate switching according to the first rate, and the transmission rate of the first electronic device after switching is the first rate.

In a possible implementation manner, the first data packet further includes verification information and a first time window,

The first electronic device is further configured to send at least one first verification packet to the second electronic device at the first rate;

When N first check packets in the first check packet are received within the first time window, the second electronic device is further configured to use the first rate to send the data to the first electronic device. The device sends at least one second verification packet, wherein the second verification packet is sent by the second electronic device within the first time window and the second verification packet is the second electronic device. Determined by the device according to the verification information, the N is an integer greater than 1;

If the N second check packets in the second check packet are received within the first time window, the first electronic device is also used to determine to use the first rate to send the The second electronic device transmits data.

In a possible implementation,

If the N second check packets in the second check packet are not received within the first time window, the first electronic device is further configured to send the second check packet to the second check packet at the second rate. After the second electronic device sends the first data packet, the first check packet is sent to the second electronic device again at the first rate;

When the N first check packets in the first check packet are received within the first time window, the second electronic device is further configured to use the first rate to send to the The first electronic device sends the second verification packet;

If the N second check packets in the second check packet are not received within the first time window, the first electronic device is also used to switch the first rate After the third rate is the third rate, the third rate is used to send a second data packet to the second electronic device, where the second data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is The fourth rate is to perform transmission rate switching according to the fourth rate, the transmission rate of the first electronic device after switching is the fourth rate, and the fourth rate is used to send the first electronic device to the second electronic device. A check packet until the first electronic device determines to use the fourth rate to transmit data to the second electronic device;

In a third aspect, a computer-readable storage medium is provided, and a computer program is stored in the computer-readable storage medium. When the computer program is executed, the computer program described in the first aspect or any one of the first aspect method.

Description of the drawings

The following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art.

in:

FIG. 1 is a schematic structural diagram of a transmission rate switching device provided by an embodiment of the application;

FIG. 2 is a schematic flowchart of a method for switching a transmission rate according to an embodiment of the application;

Figure 3 is a schematic diagram of a link provided by an embodiment of the application;

FIG. 4 is a schematic flowchart of yet another method for switching transmission rates according to an embodiment of the application;

FIG. 5 is a schematic flowchart of another transmission rate switching method provided by an embodiment of this application;

FIG. 6 is a schematic flowchart of another transmission rate switching method provided by an embodiment of the application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

The terms "first" and "second" in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific sequence.

First of all, the electronic device involved in the embodiments of the present application can be integrated with a processor and a camera, can also be integrated with a processor and a display screen, and can also be integrated with a processor, a camera, and a display screen. Of course, the electronic device can also be integrated with other electronic devices. The device is not restricted here. For example, the electronic device may be a mobile phone (or called a "cellular" phone), a computer with mobile user equipment, portable, pocket-sized, handheld, and a mobile device with a built-in computer, and so on. The electronic device may also be a wearable device or a vehicle-mounted user equipment. The vehicle-mounted user equipment is, for example, also referred to as an on-board unit (OBU), which is not limited in the embodiment of the present application. In addition, the electronic device may also be a computer, a tablet computer, a notebook computer, a palmtop computer, and the like.

It can be understood that, in the embodiments of the present application, the first electronic device may be, for example, a processor, and the second electronic device may be, for example, a camera or a display screen.

Further, referring to FIG. 1, FIG. 1 is a schematic structural diagram of a transmission rate switching apparatus provided by an embodiment of the application. As shown in Fig. 1, the first electronic device includes a control module, a transmitter and a receiver, and the second electronic device includes a control module, a transmitter and a receiver. The control module of the first electronic device can transmit data through the transmitter of the first electronic device and the receiver of the second electronic device, and the control module of the second electronic device can transmit data through the transmitter of the second electronic device and the receiver of the second electronic device. Machine to transmit data.

In order to facilitate the understanding of this application, the relevant technical knowledge involved in the embodiments of this application is first introduced here.

Generally speaking, the process of switching the transmission rate is often involved when using MIPI's physical layer interface to transmit data. When the transmission rate is switched in the prior art, for example, the transmitter of the processor is required to send a speed cut request to the receiver of the camera. After the receiver of the processor receives the feedback information fed back by the transmitter of the camera, the processor’s The transmitter switches the transmission rate. Further, the transmitter of the processor performs capability configuration and stops transmitting data. When the receiver of the camera detects that the transmitter of the processor stops transmitting data, the receiver of the camera performs rate switching. It can be seen that in the prior art, multiple interactions are required when switching the transmission rate, which results in a complicated negotiation process and low efficiency.

In order to solve the above technical problems, the present application provides a method for switching transmission rates. The following describes the embodiments of the present application in detail.

Refer to FIG. 2, which is a schematic flowchart of a method for switching a transmission rate according to an embodiment of the application. As shown in FIG. 2, the method is applied to an electronic device, and the electronic device includes a first electronic device and a second electronic device, and the method includes:

201. The second electronic device receives a first data packet sent by the first electronic device, where the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first rate.

Wherein, the first data packet may include first indication information, first forward link indication information, check information, and a first time window, and the first data packet may also include indication information, first backward link indication information, Check the information and the first time window. The first data packet may also include first indication information, first forward link indication information, first backward link indication information, check information, and first time window. Further, the first indication information is used to indicate the first rate. In addition, the first time window is determined according to the first rate. For example, the larger the first rate, the longer the first time window; the smaller the first rate, the shorter the first time window.

It should be noted that when the first data packet includes the first indication information, the first forward link indication information, the check information, and the first time window, the first indication information is at least one first indication in the first data packet. Bits, when the value of at least one first bit in the first data packet is a first value, at least one first bit in the first data packet is used to indicate the first rate. The first forward link indication information is at least one second bit in the first data packet, and the value of at least one second bit in the first data packet is at least one bit in the first data packet when the value is the second value The second bit is used to indicate the forward link indicated by the first forward link indication information. The check information included in the first data packet is at least one third bit in the first data packet, and when the value of the at least one third bit in the first data packet is the third value, at least A third bit is used by the second electronic device to determine at least one second verification packet. The first time window is at least one fourth bit in the first data packet, and when the value of at least one fourth bit in the first data packet is a fourth value, at least one fourth bit in the first data packet Used to indicate the first time window. Among them, the first numerical value, the second numerical value, the third numerical value, and the fourth numerical value may be the same, or may be partly the same, or may be completely different. Further, the first data packet is also used to instruct the second electronic device to perform forward link switching, and the switched forward link is the forward link indicated by the first forward link indication information.

When the first data packet includes the first indication information, the first backward link indication information, the check information, and the first time window, the first indication information is at least one first bit in the first data packet. When the value of at least one first bit in a data packet is a first value, at least one first bit in the first data packet is used to indicate the first rate. The first backward link indication information is at least one second bit in the first data packet, and the value of at least one second bit in the first data packet is at least one bit in the first data packet when the value is the second value The second bit is used to indicate the backward link indicated by the first backward link indication information. The check information included in the first data packet is at least one third bit in the first data packet, and when the value of the at least one third bit in the first data packet is the third value, at least A third bit is used by the second electronic device to determine the second verification packet. The first time window is at least one fourth bit in the first data packet, and when the value of at least one fourth bit in the first data packet is a fourth value, at least one fourth bit in the first data packet Used to indicate the first time window. Among them, the first numerical value, the second numerical value, the third numerical value, and the fourth numerical value may be the same, partly the same, or completely different. Further, the first data packet is also used to instruct the second electronic device to perform backward link switching, and the switched backward link is the backward link indicated by the first backward link indication information.

When the first data packet includes the first indication information, the first forward link indication information, the first backward link indication information, the check information and the first time window, the first indication information is in the first data packet When the value of at least one first bit in the first data packet is the first value, the at least one first bit in the first data packet is used to indicate the first rate. The first forward link indication information is at least one second bit in the first data packet, and the value of at least one second bit in the first data packet is at least one bit in the first data packet when the value is the second value The second bit is used to indicate the forward link indicated by the first forward link indication information. The first backward link indication information is at least one third bit in the first data packet, and the value of at least one third bit in the first data packet is at least one bit in the first data packet when the value is the third value The third bit is used to indicate the backward link indicated by the first backward link indication information. The check information included in the first data packet is at least one fourth bit in the first data packet, and when the value of at least one fourth bit in the first data packet is the fourth value, at least one bit in the first data packet is A fourth bit is used to indicate that the second electronic device determines the second check packet. The first time window is at least one fifth bit in the first data packet, and when the value of at least one fifth bit in the first data packet is the fifth value, at least one fifth bit in the first data packet Used to indicate the first time window. It can be understood that the first numerical value, the second numerical value, the third numerical value, the fourth numerical value, and the fifth numerical value may be the same, or may be partly the same, or may be completely different. Further, the first data packet is also used to instruct the second electronic device to perform forward link switching and backward link switching, and the forward link after the switching is the forward link indicated by the first forward link indication information. Link, the backward link after the handover is the backward link indicated by the first backward link indication information.

It should be noted that when the first data packet includes the first backward link indication information, the first data packet is also used to instruct the second electronic device to detect the backward link indicated by the first backward link indication information. When no data is being transmitted, switch the transmission rate according to the first data packet; or,

The first data packet is also used to instruct the second electronic device to switch the transmission rate according to the first data packet when detecting the end of data transmission on the backward link indicated by the first backward link indication information.

For example, suppose that the first data packet includes first indication information, first forward link indication information, first backward link indication information, check information, and first time window. See Table 1, which is the first time window. The information indicated by different bits of a data packet is shown in Table 1:

Table 1 shows the information indicated by the different bits of the first data packet

It can be seen that in Table 1, when the values of the 0-1 bits in the first data packet are different, the rates indicated by the 0-1 bits are also different. For example, when the value of the 0-1 bit is 00, the rate indicated by the 0-1 bit is rate 1; when the 0-1 bit is 01, the 0-1 bit indicates When the value of the 0-1 bit is 10, the rate indicated by the 0-1 bit is the rate 3; when the value of the 0-1 bit is 11, the value of 0-1 The rate indicated by the bit is rate 4. When the values of the bits 2-3 in the first data packet are different, the forward link indicated by the bits 2-3 is also different. For example, when the value of bit 2-3 is 00, the forward link indicated by bit 2-3 is forward link 1; when the bit value of 2-3 is 01, 2- The forward link indicated by bit 3 is forward link 2; when the value of bit 2-3 is 10, the forward link indicated by bit 2-3 is forward link 3. ; When the value of bits 2-3 is 11, the forward link indicated by the bits 2-3 is forward link 4. When the values of bits 4-5 in the first data packet are different, the backward link indicated by the bits 4-5 is also different. For example, when the value of bit 4-5 is 00, the backward link indicated by bit 4-5 is backward link 1; when the value of bit 4-5 is 01, 4- The backward link indicated by bit 5 is backward link 2; when the value of bit 4-5 is 10, the backward link indicated by bit 4-5 is backward link 3. ; When the value of bits 4-5 is 11, the backward link indicated by bits 4-5 is backward link 4. When the values of bits 6-7 in the first data packet are different, the check information indicated by the bits 6-7 is also different. When the value of bit 6-7 is 00, the check information indicated by bit 6-7 is check information 1; when the bit value of 6-7 is 01, bit 6-7 The indicated check information is check information 2; when the value of bits 6-7 is 10, the check information indicated by bits 6-7 is check information 3; When the value is 11, the check information indicated by bits 6-7 is check information 4. When the values of bits 8-9 in the first data packet are different, the first time window indicated by the bits 8-9 is also different. When the value of the bit 8-9 is 00, the first time window indicated by the bit 8-9 is the first time window 1; when the bit 8-9 is 01, the value of the 8-9 bit The first time window indicated by the bit is the first time window 2; when the value of the bit 8-9 is 10, the first time window indicated by the bit 8-9 is the first time window 3; 8 When the value of the -9 bit is 11, the first time window indicated by the 8-9 bit is the first time window 4.

Among them, if rate 1 is less than rate 2, rate 2 is less than rate 3, and rate 3 is less than rate 4. Then, the rate 1 may be, for example, 1.5 gigabit per second (Gbps); the rate 2 may be, for example, 4Gbps; the rate 3 may be, for example, 8Gbps; and the rate 4 may be, for example, 16Gbps. It is understandable that the specific rate is the largest and the rate is the smallest, so there is no restriction here.

In addition, for example, refer to FIG. 3, which is a schematic diagram of a link provided in an embodiment of the application. It can be seen that the link between the physical layer of the first electronic device and the physical layer of the second electronic device includes 4 forward links and 4 backward links. For example, the forward link whose link code is 00 can be forward link 1, the forward link whose link code is 01 can be forward link 2, and the forward link whose link code is 10 can be Forward link 3, the forward link whose link code is 11 can be forward link 4. For another example, a backward link with a link code of 00 can be backward link 1, a backward link with a link code of 01 can be backward link 2, and a backward link with a link code of 10 can be It is the backward link 3, and the backward link whose link code is 11 can be the backward link 4.

Further, the second electronic device receives the first data packet sent by the first electronic device, that is, the control module of the second electronic device receives the control module of the first electronic device through the receiver of the second electronic device. The first data packet sent by the machine. Specifically, referring to FIG. 4, FIG. 4 is a schematic flowchart of another transmission rate switching method provided by an embodiment of the application. It can be seen that there is an interaction process between the protocol layer of the first electronic device and the physical layer of the first electronic device, and there is also an interaction process between the protocol layer of the second electronic device and the physical layer of the second electronic device. Specifically, the protocol layer of the first electronic device may send a transmission rate switching instruction to the physical layer of the first electronic device. The transmission rate switching instruction may include the first rate, the first forward link indication information, the check information, and the first time window. The transmission rate switching instruction may also include the first rate, the first backward link indication information, the check information, and the first time window. The transmission rate switching instruction may further include the first rate, the first forward link indication information, the first backward link indication information, the check information, and the first time window. It is understandable that the physical layer of the first electronic device can receive the transmission rate switching instruction sent by the protocol layer of the first electronic device, that is, the control module of the first electronic device receives the transmission rate switching instruction. Further, the control module of the first electronic device may analyze the transmission rate switching instruction to obtain the analyzed transmission rate switching instruction. Then, the control module of the first electronic device may generate the first data packet based on the parsed transmission rate switching instruction. Then, the control module of the first electronic device can send the first data packet to the receiver of the second electronic device through the transmitter of the first electronic device.

Further, the control module of the second electronic device can analyze the first data packet. If after parsing, the control module of the second electronic device determines that the first data packet includes indication information, first forward link indication information, verification information, and the first time window, then the control module of the second electronic device can control the second electronic device. The receiver of the device switches the transmission rate according to the first data packet, and the transmission rate after the switching is the first rate. That is, the control module of the second electronic device can control the receiver of the second electronic device to switch the forward link according to the first data packet, and the switched forward link is the forward link indicated by the first forward link indication information. To the link.

If the control module of the second electronic device after parsing determines that the first data packet includes the indication information, the first backward link indication information, the verification information and the first time window, then the physical layer of the second electronic device can send a message to the second electronic device. The protocol layer of the device sends a backward link speed cut request, that is, the control module of the second electronic device can send a backward link speed cut request to the protocol layer of the second electronic device. When receiving the backward link speed cut response sent by the protocol layer of the second electronic device, the control module of the second electronic device detects that no data is being transmitted on the backward link indicated by the first backward link indication information , When the transmitter of the second electronic device is controlled to switch the transmission rate according to the first data packet, or the control module of the second electronic device detects the end of data transmission on the backward link indicated by the first backward link indication information, Control the transmitter of the second electronic device to switch the transmission rate according to the first data packet.

If after parsing, the control module of the second electronic device determines that the first data packet includes indication information, first forward link indication information, first backward link indication information, verification information, and the first time window, then the second The control module of the electronic device can control the receiver of the second electronic device to switch the forward link according to the first data packet, and the switched forward link is the forward link indicated by the first forward link indication information, At the same time, a backward link speed cut request is sent to the protocol layer of the second electronic device. When receiving the backward link speed cut response sent by the protocol layer of the second electronic device, the control module of the second electronic device detects that no data is being transmitted on the backward link indicated by the first backward link indication information , When the transmitter of the second electronic device is controlled to switch the transmission rate according to the first data packet, or the control module of the second electronic device detects the end of data transmission on the backward link indicated by the first backward link indication information, Control the transmitter of the second electronic device to switch the transmission rate according to the first data packet.

It can be seen that in the above technical solution, the use of the indication information to indicate the rate is implemented to prepare for the subsequent switching of the transmission rate of the second electronic device. It also realizes precise control of the switching link, avoids the problem that multiple interactions are required for each link switching in the prior art, simplifies the negotiation process, and improves the efficiency of transmission rate switching. In addition, the problem of data transmission failure on the backward link indicated by the first backward link indication information due to unreliable data transmission after the speed cut after the transmission rate is switched according to the first data packet is also avoided.

202. The first electronic device performs transmission rate switching according to the first rate, and the transmission rate after the switching of the first electronic device is the first rate.

Referring to FIG. 5, FIG. 5 is a schematic flowchart of another transmission rate switching method provided by an embodiment of the application. As shown in FIG. 5, the method is applied to an electronic device, the electronic device includes a first electronic device and a second electronic device, and the method includes:

501. The second electronic device receives a first data packet sent by the first electronic device, where the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first rate.

For the content of the first data packet, reference may be made to step 201 in FIG. 2, which will not be repeated here.

502. The first electronic device switches the transmission rate according to the first rate, and the transmission rate after the switching of the first electronic device is the first rate.

503. The first electronic device sends at least one first verification packet to the second electronic device at the first rate, where the first verification packet includes a verification corresponding to the verification information.

504. When receiving N first check packets in the first check packet within the first time window, the second electronic device sends at least one second check packet to the first electronic device at the first rate.

Wherein, the second verification packet is sent by the second electronic device within the first time window and the second verification packet is determined by the second electronic device according to the verification information, and the N is an integer greater than 1. N can be 2, 3, 4, 5, 6, 7, 10, etc., for example.

Wherein, if N second check packets in the second check packet are received within the first time window, step 505 is executed; if the second check packet is not received within the first time window If there are N second parity packets of, step 506 is executed.

It is understandable that when the first electronic device uses the first rate to send the first verification packet to the second electronic device, the first electronic device starts timing to obtain the first start time corresponding to the first electronic device. Further, based on the first start time corresponding to the first electronic device, if N second check packets in the second check packet are received within the first time window, step 505 is executed. Based on the first start time corresponding to the first electronic device, if N second check packets in the second check packet are not received within the first time window, step 506 is executed. Further, the first end time corresponding to the first electronic device is determined according to the first start time and the first time window corresponding to the first electronic device.

Wherein, the first electronic device uses the first rate to send the first check packet to the second electronic device, that is, the control module of the first electronic device uses the first rate to receive the second electronic device through the transmitter of the first electronic device The machine sends the first check packet. Specifically, referring to FIG. 6, FIG. 6 is a schematic flowchart of another method for switching transmission rates according to an embodiment of the application. As shown in FIG. 6, it can be seen that the control module of the first electronic device can send the first check packet to the receiver of the second electronic device through the transmitter of the first electronic device at the first rate. When the second electronic device receives N first verification packets in the first verification packet, the control module of the second electronic device may determine the second verification packet according to the verification information included in the first data packet . Then, the second electronic device can send the second verification packet to the first electronic device at the first rate. That is, the control module of the second electronic device can send the second check packet to the receiver of the first electronic device through the transmitter of the second electronic device at the first rate.

It can be understood that the first verification packet and the second verification packet are the same verification packet.

It should be noted that when the second electronic device switches the transmission rate according to the first data packet, the second electronic device starts timing to obtain the first start time corresponding to the second electronic device. Based on the first start time corresponding to the second electronic device, when N first verification packets in the first verification packet are received within the first time window, the second electronic device uses the first rate to move to the first An electronic device sends at least one second verification packet. At the same time, when receiving N second check packets in the first check packet within the first time window, the second electronic device determines to use the first rate to transmit data to the first electronic device. After the second electronic device determines to use the first rate to transmit data to the first electronic device, regardless of whether the second electronic device has stopped timing, the second electronic device will stop using the first rate to send the second check to the first electronic device Bag. In addition, after the second electronic device determines to use the first rate to transmit data to the first electronic device, the physical layer of the second electronic device may send a rate switching success message to the protocol layer of the second electronic device. At this time, the second electronic device is in a standby state, waiting for subsequent data transmission at the first rate.

Further, the first end time corresponding to the second electronic device is determined according to the first start time and the first time window corresponding to the second electronic device.

In addition, if N first check packets in the first check packet are not received within the first time window, the second electronic device can switch the first rate to the second electronic device to switch the transmission rate to the first The rate before the rate.

505. The first electronic device determines to use the first rate to transmit data to the second electronic device.

Wherein, after the first electronic device determines to use the first rate to transmit data to the second electronic device, regardless of whether the first electronic device has stopped timing, the first electronic device will stop using the first rate to transmit the first electronic device to the second electronic device. Check the package. In addition, after the first electronic device determines to use the first rate to transmit data to the second electronic device, the physical layer of the first electronic device may send a rate switching success message to the protocol layer of the first electronic device. At this time, the first electronic device is in a standby state, waiting for subsequent data transmission at the first rate.

506. The first electronic device sends the first data packet to the second electronic device at the second rate and then sends the first check packet to the second electronic device at the first rate again.

It should be noted that before using the second rate to send the first data packet to the second electronic device, the first electronic device may switch the first rate to the second rate, and the first electronic device may use the second rate to send the second electronic device to the second electronic device. The device sends the first data packet. Further, after sending the first data packet to the second electronic device at the second rate, before sending the first check packet to the second electronic device at the first rate, the first electronic device also transmits at the first rate Rate switching, the transmission rate of the first electronic device after switching is the first rate. It is understandable that when the first electronic device sends the first verification packet to the second electronic device at the first rate again, the first electronic device starts timing to obtain the second start time corresponding to the first electronic device. Further, based on the second start time corresponding to the first electronic device, if N second verification packets in the second verification packet are received again within the first time window, the first electronic device determines to use The first rate transmits data to the second electronic device. Further, in the subsequent process, reference may be made to step 505 in FIG. 5 for the relevant content after the first electronic device determines to use the first rate to transmit data to the second electronic device, which will not be repeated here.

Based on the second start time corresponding to the first electronic device, if N second check packets in the second check packet are not received within the first time window, step 507 is executed. Further, the second end time corresponding to the first electronic device is determined according to the second start time and the first time window corresponding to the first electronic device.

507. When receiving N first check packets in the first check packet within the first time window, the second electronic device sends the second check packet to the first electronic device again at the first rate.

Wherein, if N second check packets in the second check packet are received within the first time window, the first electronic device determines to use the first rate to transmit data to the second electronic device. Further, in the subsequent process, reference may be made to step 505 in FIG. 5 for the relevant content after the first electronic device determines to use the first rate to transmit data to the second electronic device, which will not be repeated here.

If N second check packets in the second check packet have not been received within the first time window, step 508 is executed.

It should be noted that when the second electronic device switches the transmission rate according to the first data packet again, the second electronic device starts timing to obtain the second start time corresponding to the second electronic device. Based on the second start time corresponding to the second electronic device, when N first verification packets in the first verification packet are received within the first time window, the second electronic device uses the first rate to move to the first An electronic device sends at least one second verification packet. At the same time, when receiving N first check packets in the first check packet within the first time window, the second electronic device determines to use the first rate to transmit data to the first electronic device. After the second electronic device determines to use the first rate to transmit data to the first electronic device, regardless of whether the second electronic device has stopped timing, the second electronic device will stop using the first rate to send the second check to the first electronic device Bag. In addition, after the second electronic device determines to use the first rate to transmit data to the first electronic device, the physical layer of the second electronic device may send a rate switching success message to the protocol layer of the second electronic device. At this time, the second electronic device is in a standby state, waiting for subsequent data transmission at the first rate.

Further, the second end time corresponding to the second electronic device is determined according to the second start time and the first time window corresponding to the second electronic device.

508. The first electronic device uses the third rate to send a second data packet to the second electronic device after switching the first rate to the third rate, and the second data packet is used to instruct the second electronic device to switch the transmission rate and switch The latter transmission rate is the fourth rate, and the transmission rate is switched according to the fourth rate. The transmission rate after the first electronic device is switched is the fourth rate. The fourth rate is used to send the first check packet to the second electronic device until The first electronic device determines to use the fourth rate to transmit data to the second electronic device.

Among them, the second rate is the rate before the first electronic device switches the transmission rate to the first rate, the second rate is less than the first rate, and the third rate is the rate with the lowest rate among the transmission rates corresponding to the first electronic device, and the fourth rate It is greater than the second rate and the fourth rate is less than the first rate.

Wherein, the second data packet may include second indication information, second forward link indication information, check information, and a second time window, and the second data packet may also include indication information, second backward link indication information, Check information and a second time window. The second data packet may also include second indication information, second forward link indication information, second backward link indication information, check information, and second time window. Further, the second indication information is used to indicate the fourth rate. In addition, the second time window is determined according to the fourth rate. For example, the larger the fourth rate, the longer the second time window; the smaller the fourth rate, the shorter the second time window. In addition, the verification information included in the first data packet is the same as the verification information included in the second data packet.

It should be noted that when the second data packet includes the second indication information, the second forward link indication information, the check information, and the second time window, the second indication information is at least one first item in the second data packet. Bits, when the value of at least one first bit in the second data packet is the first value, at least one first bit in the second data packet is used to indicate the first rate. The second forward link indication information is at least one second bit in the second data packet, and when the value of at least one second bit in the second data packet is the second value, at least one bit in the second data packet The second bit is used to indicate the forward link indicated by the second forward link indication information. The check information included in the second data packet is at least one third bit in the second data packet. When the value of at least one third bit in the second data packet is the third value, at least A third bit is used by the second electronic device to determine the second verification packet. The second time window is at least one fourth bit in the second data packet, and when the value of at least one fourth bit in the second data packet is the fourth value, at least one fourth bit in the second data packet Used to indicate the second time window. Among them, the first numerical value, the second numerical value, the third numerical value, and the fourth numerical value may be the same, or may be partly the same, or may be completely different. Further, the second data packet is also used to instruct the second electronic device to perform forward link switching, and the switched forward link is the forward link indicated by the second forward link indication information.

When the second data packet includes the second indication information, the second backward link indication information, the check information and the second time window, the second indication information is at least one first bit in the second data packet. When the value of at least one first bit in the second data packet is the first value, the at least one first bit in the second data packet is used to indicate the first rate. The second backward link indication information is at least one second bit in the second data packet, and when the value of at least one second bit in the second data packet is the second value, at least one bit in the second data packet The second bit is used to indicate the backward link indicated by the second backward link indication information. The check information included in the second data packet is at least one third bit in the second data packet. When the value of at least one third bit in the second data packet is the third value, at least A third bit is used by the second electronic device to determine the second verification packet. The second time window is at least one fourth bit in the second data packet, and when the value of at least one fourth bit in the second data packet is the fourth value, at least one fourth bit in the second data packet Used to indicate the second time window. Among them, the first numerical value, the second numerical value, the third numerical value, and the fourth numerical value may be the same, or may be partly the same, or may be completely different. Further, the second data packet is also used to instruct the second electronic device to perform backward link switching, and the switched backward link is the backward link indicated by the second backward link indication information.

When the second data packet includes the second indication information, the second forward link indication information, the second backward link indication information, the check information and the second time window, the second indication information is in the second data packet When the value of at least one first bit in the second data packet is the first value, the at least one first bit in the second data packet is used to indicate the first rate. The second forward link indication information is at least one second bit in the second data packet, and when the value of at least one second bit in the second data packet is the second value, at least one bit in the second data packet The second bit is used to indicate the forward link indicated by the second forward link indication information. The second backward link indication information is at least one third bit in the second data packet, and the value of at least one third bit in the second data packet is at least one in the second data packet when the value is the third value The third bit is used to indicate the backward link indicated by the second backward link indication information. The check information included in the second data packet is at least one fourth bit in the second data packet, and when the value of at least one fourth bit in the second data packet is the fourth value, at least one bit in the second data packet is A fourth bit is used by the second electronic device to determine the second check packet. The second time window is at least one fifth bit in the second data packet, and when the value of at least one fifth bit in the second data packet is the fifth value, at least one fifth bit in the second data packet Used to indicate the second time window. It can be understood that the first numerical value, the second numerical value, the third numerical value, the fourth numerical value, and the fifth numerical value may be the same, or may be partly the same, or may be completely different. Further, the second data packet is also used to instruct the second electronic device to perform forward link switching and backward link switching, and the switched forward link is the forward direction indicated by the second forward link indication information. Link, the backward link after the handover is the backward link indicated by the second backward link indication information.

It should be noted that when the second data packet includes the second backward link indication information, the second data packet is also used to instruct the second electronic device to detect the backward link indicated by the second backward link indication information. When no data is being transmitted, switch the transmission rate according to the second data packet; or,

Further, the first electronic device uses the third rate to send the second data packet to the second electronic device, that is, the control module of the first electronic device uses the transmitter of the first electronic device to transmit the second data packet to the control module of the second electronic device at the third rate. Send the second data packet. It is understandable that when the first electronic device uses the third rate to send the second data packet to the second electronic device, it will involve the interaction process between the protocol layer of the first electronic device and the physical layer of the first electronic device. It will involve the interaction process between the protocol layer of the second electronic device and the physical layer of the second electronic device. Further, for the interaction process between the protocol layer of the first electronic device and the physical layer of the first electronic device, and the interaction process between the protocol layer of the second electronic device and the physical layer of the second electronic device, please refer to the steps in FIG. 2 201, I won’t go into details here.

It is understandable that when N first verification packets in the first verification packet are received within the second time window, the second electronic device sends the second verification packet to the first electronic device at a fourth rate. If N second check packets in the second check packet are received within the second time window, the first electronic device determines to use the fourth rate to transmit data to the second electronic device. Further, when the first electronic device sends the first verification packet to the second electronic device at the fourth rate, the first electronic device starts timing to obtain the third start time corresponding to the first electronic device. Further, based on the third start time corresponding to the first electronic device, if N second verification packets in the second verification packet are received within the second time window, the first electronic device determines to use the first Four-speed transmission of data to the second electronic device. Further, the third end time corresponding to the first electronic device is determined according to the third start time and the second time window corresponding to the first electronic device. In addition, after the first electronic device determines to use the fourth rate to transmit data to the second electronic device, regardless of whether the first electronic device has stopped timing, the first electronic device will stop using the fourth rate to transmit the first electronic device to the second electronic device. Check the package. In addition, after the first electronic device determines to use the fourth rate to transmit data to the second electronic device, the physical layer of the first electronic device may send a rate switching success message to the protocol layer of the first electronic device. At this time, the first electronic device is in a standby state, waiting for subsequent data transmission at the fourth rate.

If N second check packets in the second check packet are not received within the second time window, the first electronic device can switch the fourth rate to the third rate, or switch the fourth rate to The second rate, so that the second rate or the third rate can be used to transmit data to the second electronic device.

It should be noted that when the second electronic device switches the transmission rate according to the second data packet, the second electronic device starts timing to obtain the third start time corresponding to the second electronic device. Based on the third start time corresponding to the second electronic device, when N first verification packets in the first verification packet are received within the second time window, the second electronic device uses the fourth rate to move to the first An electronic device sends at least one second verification packet. At the same time, when receiving N first check packets in the first check packet within the second time window, the second electronic device determines to use the fourth rate to transmit data to the first electronic device. Further, the third end time corresponding to the second electronic device is determined according to the third start time and the second time window corresponding to the second electronic device. In addition, after the second electronic device determines to use the fourth rate to transmit data to the first electronic device, regardless of whether the second electronic device has stopped timing, the second electronic device will stop using the fourth rate to transmit the second electronic device to the first electronic device. Check the package. In addition, after the second electronic device determines to use the fourth rate to transmit data to the first electronic device, the physical layer of the second electronic device may send a rate switching success message to the protocol layer of the second electronic device. At this time, the second electronic device is in a standby state, waiting for subsequent data transmission at the first rate.

In addition, if N first check packets in the first check packet are not received within the second time window, the second electronic device can switch the fourth rate to the second electronic device to switch the transmission rate to the fourth The rate before the rate.

It can be seen that in the above technical solution, the negotiation process is simplified, and the transmission rate switching efficiency is improved. At the same time, through the check packet and the second time window, the reliability of the data transmission after the speed cut is verified, which avoids sending data to the second electronic device at the switched rate when the data transmission after the speed cut is unreliable. In addition, it is also realized that when the data transmission is unreliable after the speed is cut, the original rate before switching to the first rate is used to send the second data packet to the second electronic device, which eliminates the problem that the new rate negotiation fails due to accidental external factors. At the same time, when the check packet is still not received within the second time window, that is, when the data transmission is still unreliable after the speed cut, the new data packet is transmitted at the lowest rate corresponding to the device, which provides a more flexible speed cut method .

An embodiment of the present application provides a transmission rate switching device. The transmission rate switching device includes a first electronic device and a second electronic device.

The second electronic device is used to receive the first data packet sent by the first electronic device, and the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first rate.

The first electronic device is used to switch the transmission rate according to the first rate, and the transmission rate after the switching of the first electronic device is the first rate.

In a possible implementation manner, the first data packet further includes first forward link indication information and/or first backward link indication information, and the first data packet is also used to instruct the second electronic device to perform forward Link switching and/or backward link switching, and the forward link after switching is the forward link indicated by the first forward link indication information, and the backward link after switching is the first backward link The backward link indicated by the route indication information.

In a possible implementation manner, the first data packet is also used to instruct the second electronic device to perform processing according to the first data packet when detecting that no data is being transmitted on the backward link indicated by the first backward link indication information. Transmission rate switching; or,

It can be seen that the above technical solution avoids data transmission on the backward link indicated by the first backward link indication information due to unreliable data transmission after the speed cut after the transmission rate is switched according to the second data packet. The problem of failure.

When receiving N first check packets in the first check packet within the first time window, the second electronic device is further configured to send at least one second check packet to the first electronic device at the first rate, Wherein, the second verification packet is sent by the second electronic device within the first time window and the second verification packet is determined by the second electronic device according to the verification information, and the N is an integer greater than 1;

If N second check packets in the second check packets are received within the first time window, the first electronic device is also used to determine to use the first rate to transmit data to the second electronic device.

For the content of sending the first check packet to the second electronic device at the first rate, reference may be made to step 504 in FIG. 5, which will not be repeated here. For the content of sending at least one second verification packet to the first electronic device at the first rate, reference may be made to step 504 in FIG. 5, which will not be repeated here. For the content of determining to use the first rate to transmit data to the second electronic device, reference may be made to step 505 in FIG. 5, which will not be repeated here.

In a possible implementation, if N second check packets in the second check packet are not received within the first time window, the first electronic device is also used to transfer to the second check packet at the second rate. After the electronic device sends the first data packet, the first check packet is sent to the second electronic device again at the first rate;

When receiving N first check packets in the first check packet within the first time window, the second electronic device is further configured to send the second check packet to the first electronic device again at the first rate;

If N second check packets in the second check packet have not been received within the first time window, the first electronic device is also used to use the third rate direction after switching the first rate to the third rate. The second electronic device sends a second data packet, the second data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the fourth rate, the transmission rate is switched according to the fourth rate, and the first electronic device switches The subsequent transmission rate is the fourth rate, and the fourth rate is used to send the first check packet to the second electronic device until the first electronic device determines that the fourth rate is used to transmit data to the second electronic device;

For the content of sending the first check packet to the second electronic device at the first rate again, reference may be made to step 506 in FIG. 5, which will not be repeated here. Regarding the content of sending the second verification packet to the first electronic device at the first rate again, reference may be made to step 504 in FIG. 5, which will not be repeated here. For the content of using the third rate to send the second data packet to the second electronic device after the first rate is switched to the third rate, reference may be made to step 508 in FIG. 5, which will not be repeated here.

It can be seen that in the above technical solution, the original rate before switching to the first rate is used to send the second data packet to the second electronic device when the data transmission is unreliable after the speed is cut. The rate negotiation failed. At the same time, when the check packet has not been received within the first time window, that is, when the data transmission is still unreliable after the speed cut, the new data packet is transmitted at the lowest rate corresponding to the device, which provides a more flexible speed cut method .

The present application also provides a computer-readable storage medium in which a computer program is stored, and when the computer program is executed, any method such as a transmission rate switching method is implemented.

The specific implementations described above further describe the purpose, technical solutions, and beneficial effects of the application. It should be understood that the foregoing are only specific implementations of the application and are not intended to limit the scope of the application. The scope of protection, any modification, equivalent replacement, improvement, etc. made on the basis of the technical solution of this application shall be included in the scope of protection of this application.

Claims

A transmission rate switching method, characterized in that the method is applied to an electronic device, the electronic device includes a first electronic device and a second electronic device, and the method includes:

The second electronic device receives a first data packet sent by the first electronic device, where the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first rate;

The first electronic device performs transmission rate switching according to the first rate, and the transmission rate of the first electronic device after switching is the first rate.
The method according to claim 1, wherein the first data packet includes first indication information, and the first indication information is used to indicate the first rate.
The method according to claim 1 or 2, wherein the first data packet further comprises first forward link indication information and/or first backward link indication information, and the first data packet further includes Used to instruct the second electronic device to perform forward link switching and/or backward link switching, and the switched forward link is the forward link indicated by the first forward link indication information , The backward link after the handover is the backward link indicated by the first backward link indication information.
The method according to claim 3, wherein the first data packet is further used to instruct the second electronic device to detect that the backward link indicated by the first backward link indication information is not When transmitting data, switch the transmission rate according to the first data packet; or,

The first data packet is also used to instruct the second electronic device to perform transmission according to the first data packet when detecting the end of data transmission on the backward link indicated by the first backward link indication information Rate switching.
The method according to any one of claims 1 to 4, wherein the first data packet further includes check information and a first time window, and the first electronic device transmits at the first rate After the rate switching, the method further includes:

Sending, by the first electronic device, at least one first verification packet to the second electronic device at the first rate;

When receiving N first check packets in the first check packet within the first time window, the second electronic device sends at least one check packet to the first electronic device at the first rate A second verification packet, wherein the second verification packet is sent by the second electronic device within the first time window and the second verification packet is the second electronic device according to the Determined by the verification information, the N is an integer greater than 1;

If the N second verification packets in the second verification packet are received within the first time window, the first electronic device determines to use the first rate to send the second electronic device to the second electronic device. The device transmits data.
The method according to claim 5, wherein the method further comprises:

If the N second check packets in the second check packet are not received within the first time window, the first electronic device is using the second rate to send the signal to the second electronic device After sending the first data packet, sending the first check packet to the second electronic device again at the first rate;

When the N first check packets in the first check packet are received within the first time window, the second electronic device again uses the first rate to send the signal to the first electronic device Sending the second check packet;

If the N second verification packets in the second verification packet are not received within the first time window, the first electronic device will perform the first electronic device on the first electronic device. After the first rate is switched to the third rate, the third rate is used to send a second data packet to the second electronic device, and the second data packet is used to instruct the second electronic device to switch the transmission rate and after the switching The transmission rate is the fourth rate, the transmission rate is switched according to the fourth rate, the transmission rate after the switching of the first electronic device is the fourth rate, and the fourth rate is used to send to the second electronic device The first check packet until the first electronic device determines to use the fourth rate to transmit data to the second electronic device;

Wherein, the second rate is the rate at which the first electronic device switches the transmission rate before the first rate, the second rate is less than the first rate, and the third rate is the first electronic device. The lowest rate among the transmission rates corresponding to the device, the fourth rate is greater than the second rate and the fourth rate is less than the first rate.
A transmission rate switching device, characterized in that the device includes a first electronic device and a second electronic device,

The second electronic device is configured to receive a first data packet sent by the first electronic device, and the first data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is the first A rate

The first electronic device is configured to perform transmission rate switching according to the first rate, and the transmission rate of the first electronic device after switching is the first rate.
7. The apparatus according to claim 7, wherein the first data packet includes first indication information, and the first indication information is used to indicate the first rate.
The apparatus according to claim 7 or 8, wherein the first data packet further comprises first forward link indication information and/or first backward link indication information, and the first data packet further includes Used to instruct the second electronic device to perform forward link switching and/or backward link switching, and the switched forward link is the forward link indicated by the first forward link indication information , The backward link after the handover is the backward link indicated by the first backward link indication information.
The apparatus according to claim 9, wherein the first data packet is further used to instruct the second electronic device to detect that the backward link indicated by the first backward link indication information is not When transmitting data, switch the transmission rate according to the first data packet; or,

The first data packet is also used to instruct the second electronic device to perform transmission according to the first data packet when detecting the end of data transmission on the backward link indicated by the first backward link indication information Rate switching.
The device according to any one of claims 7-10, wherein the first data packet further includes verification information and a first time window,

The first electronic device is further configured to send at least one first verification packet to the second electronic device at the first rate;

When N first check packets in the first check packet are received within the first time window, the second electronic device is further configured to use the first rate to send the data to the first electronic device. The device sends at least one second verification packet, wherein the second verification packet is sent by the second electronic device within the first time window and the second verification packet is the second electronic device. Determined by the device according to the verification information, the N is an integer greater than 1;

If the N second check packets in the second check packet are received within the first time window, the first electronic device is also used to determine to use the first rate to send the The second electronic device transmits data.
The device according to claim 11, wherein:

If the N second check packets in the second check packet are not received within the first time window, the first electronic device is further configured to send the second check packet to the second check packet at the second rate. After the second electronic device sends the first data packet, the first check packet is sent to the second electronic device again at the first rate;

When the N first check packets in the first check packet are received within the first time window, the second electronic device is further configured to use the first rate to send to the The first electronic device sends the second verification packet;

If the N second check packets in the second check packet are not received within the first time window, the first electronic device is also used to switch the first rate After the third rate is the third rate, the third rate is used to send a second data packet to the second electronic device, where the second data packet is used to instruct the second electronic device to switch the transmission rate and the transmission rate after the switching is The fourth rate is to perform transmission rate switching according to the fourth rate, the transmission rate of the first electronic device after switching is the fourth rate, and the fourth rate is used to send the first electronic device to the second electronic device. A check packet until the first electronic device determines to use the fourth rate to transmit data to the second electronic device;

Wherein, the second rate is the rate at which the first electronic device switches the transmission rate before the first rate, the second rate is less than the first rate, and the third rate is the first electronic device. The lowest rate among the transmission rates corresponding to the device, the fourth rate is greater than the second rate and the fourth rate is less than the first rate.
A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method according to any one of claims 1 to 6 is realized.