Active delay reduction method for communication equipment and method for determining standby channel

Abstract

The invention relates to an active delay reduction method for communication equipment and a method for determining a standby channel, and the method comprises the steps: taking a channel which is being used in available transmission channels as a working channel, and taking a channel which is not being used temporarily in the available transmission channels as an idle channel; a detection data packet is sent through the idle channel, sending time of the detection data packet is recorded by a sending end, receiving time is recorded when a receiving end receives the detection data packet, and a time difference between the receiving time and the sending time is used as a delay reference value of the corresponding idle channel; setting a delay threshold value, and taking the idle channel with the delay reference value smaller than the delay threshold value as an available channel; selecting an idle channel with the minimum delay reference value from the available channels as an alternating channel; and setting an alternating period, taking the alternating channel as a new working channel for executing transmission work every other alternating period, and bringing the original working channel into an idle channel. According to the invention, the average time delay of the whole transmission work can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of communication delay control, and in particular to a method for actively reducing the delay of a communication device and a method for determining a backup channel. Background Art

[0002] In the communication transmission process, the delay is directly related to the smoothness and stability of the transmission. At present, the delay management is usually carried out only after the communication equipment is found to have obvious delay problems. This has serious processing lags and is not conducive to maintaining the stability of the transmission work.

[0003] In view of this, this application is hereby filed. Summary of the invention

[0004] The purpose of the present invention is to provide a method for actively reducing the delay of a communication device, which can actively track the delay of each channel and dynamically match the channel that meets the delay requirement, thereby realizing dynamic management and allocation of each transmission channel, effectively reducing the impact of the large delay of individual channels, and helping to reduce the average delay of the overall transmission work. The present invention also helps to screen out channels with stable delays while realizing active delay reduction, thereby providing a method for determining a backup channel.

[0005] A technical solution of the present invention is to provide a method for actively reducing delay of a communication device, wherein the following steps S1-S5 are executed cyclically:

[0006] S1. Determine all available transmission channels, use channels currently in use among the available transmission channels as working channels, and use channels temporarily unused among the available transmission channels as idle channels;

[0007] S2, sending a detection data packet through the idle channel, the sending end records the sending time of the detection data packet, and the receiving end records the receiving time when receiving the detection data packet, and uses the time difference between the receiving time and the sending time as the delay reference value of the corresponding idle channel;

[0008] S3, setting a delay threshold, and taking the idle channel whose delay reference value is less than the delay threshold as an available channel;

[0009] S4, selecting the idle channel with the smallest delay reference value among the available channels as a rotation channel;

[0010] S5. Set a rotation period, use the rotation channel as the new working channel to perform transmission work every rotation period, and incorporate the original working channel into the idle channel.

[0011] Optionally, the communication device active delay reduction method further includes the following steps:

[0012] S6. Establishing a statistical model; the statistical model comprises: a reference plane and a longitudinal axis; the reference plane comprises a plurality of columns of cells, one column of cells corresponds to one of the available transmission channels; the longitudinal axis is perpendicular to the reference plane, and corresponds to the delay reference value;

[0013] S7, each time S2 is executed, a column chart is constructed at the cells of the corresponding column in the reference plane according to the delay reference value of the idle channel, and a null value processing is performed at the cells corresponding to the working channel;

[0014] S8. Count the empty value rate of each available transmission channel.

[0015] Optionally, in S7, the bar graphs constructed according to the delay reference values ​​corresponding to all idle channels when executing S2 for the same time are set in the same row in the reference plane; the bar graphs corresponding to different executions of S2 are arranged row by row in the reference plane in order of precedence.

[0016] Optionally, the empty value rate obtained by statistics in S8 is used as a basis for evaluating the quality of the channel; the higher the empty value rate, the better the quality of the corresponding available transmission channel.

[0017] Optionally, the communication device active delay reduction method further includes the following steps performed after S8:

[0018] S9, extracting a two-dimensional conversion map of the reference surface, wherein the two-dimensional conversion map includes cells corresponding to the reference surface;

[0019] Obtaining the marking result of each column of cells, including: for cells with the bar chart constructed in the reference plane, making a first mark on the corresponding cells in the two-dimensional conversion map; for cells without the bar chart constructed in the reference plane, making a second mark on the corresponding cells in the two-dimensional conversion map;

[0020] S10, determining a column of cells with the highest null value rate in the two-dimensional conversion map as a reference column; and taking the available transmission channel corresponding to a column of cells in the two-dimensional conversion map with marking results opposite to those of the reference column as the best backup channel.

[0021] Another technical solution of the present invention is to provide a method for determining a backup channel, comprising the following steps:

[0022] S6', establishing a statistical model of delay reference values ​​of available transmission channels;

[0023] The statistical model comprises: a reference plane and a longitudinal axis; the reference plane comprises a plurality of columns of cells, one column of cells corresponds to one of the available transmission channels; the longitudinal axis is perpendicular to the reference plane, and corresponds to the delay reference value;

[0024] S7', when the currently available transmission channel is an idle channel that is not in use, sending a detection data packet through the idle channel, taking the time difference between the reception time of the detection data packet at the receiving end and the transmission time at the transmitting end as the delay reference value of the idle channel, and constructing a bar chart corresponding to the delay reference value at the cell of the corresponding column in the reference plane;

[0025] When the currently available transmission channel belongs to a working channel being used, a cell in a corresponding column in the working channel in the reference plane is processed as a null value;

[0026] The operation of sending a detection data packet through an idle channel is performed once every set rotation period; after the same detection data packet sending operation is performed, the bar graph constructed according to the delay reference values ​​corresponding to all idle channels is set in the same row of the reference plane; the bar graphs corresponding to different executions of the detection data packet sending operation are arranged row by row in the reference plane in order of precedence;

[0027] S8', counting the empty value rate of each available transmission channel;

[0028] S9', extracting a two-dimensional conversion map of the reference surface, wherein the two-dimensional conversion map contains cells corresponding to the reference surface;

[0029] Obtaining the marking result of each column of cells, including: for cells with the bar chart constructed in the reference plane, making a first mark on the corresponding cells in the two-dimensional conversion map; for cells without the bar chart constructed in the reference plane, making a second mark on the corresponding cells in the two-dimensional conversion map;

[0030] S10', determining a column of cells with the highest null value rate in the two-dimensional conversion map as a reference column; and taking the available transmission channels corresponding to a column of cells in the two-dimensional conversion map with marking results opposite to those of the reference column as the best backup channels.

[0031] Optionally, in the current rotation cycle, the idle channel whose delay reference value is less than the delay threshold is used as an available channel; and then the idle channel whose delay reference value is the smallest is selected from the available channels as a rotation channel;

[0032] The rotation channel selected in the current rotation cycle is used as a new working channel to perform transmission work when the next rotation cycle arrives;

[0033] The working channel in the current rotation cycle is included in the idle channel in the next rotation cycle for executing the detection data packet sending operation.

[0034] Optionally, steps S1 to S5 of the active delay reduction method for communication devices are executed in each rotation cycle; and S7' is further executed after each execution of S2.

[0035] Optionally, the empty value rate obtained by statistics in S8' is used as a basis for evaluating the quality of the channel; the higher the empty value rate, the better the quality of the corresponding available transmission channel.

[0036] Optionally, when the reference column is used as a working channel, the best standby channel is used as an idle channel; when the reference column is used as an idle channel, the best standby channel is used as a working channel.

[0037] The beneficial effects of the technical solution of the embodiment of the present invention include:

[0038] The active delay reduction method for communication equipment provided in the embodiment of the present invention can periodically select a suitable channel as a working channel according to a rotation cycle by repeatedly executing S1 to S5, and the idle channel is used as an evaluation object, and its possibility of being used as a working channel in the future is determined by evaluating its delay reference value.

[0039] In this way, patrol detection of all available transmission channels is achieved, which can help find channels with delays that meet the requirements, thereby ensuring the delay reliability of the working channels.

[0040] In general, the active delay reduction method for communication equipment provided by the embodiment of the present invention can actively track the delay of each channel and dynamically match the channels that meet the delay requirements, thereby realizing dynamic management and allocation of each transmission channel, effectively reducing the impact of the large delay of individual channels, and helping to reduce the average delay of the overall transmission work.

[0041] The method for determining a backup channel provided by the embodiment of the present invention can not only realize active delay reduction, but also help screen out the best backup channel with stable delay so that it can be used alternately with the channel corresponding to the reference example. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 This is a flow chart of the active delay reduction method for communication equipment according to the present invention;

[0044] Figure 2 A flow chart of the present invention for determining a backup channel while actively reducing the delay;

[0045] Figure 3 A schematic diagram of a statistical model provided by an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of constructing a histogram in a statistical model.

[0047] Description of reference numerals:

[0048] O-reference plane; Z-longitudinal axis;

[0049] L1, L2, L3, L4, L5, L6, L7, L8, L9 - cell columns;

[0050] H1, H2, H3, H4, H5, H6, H7, H8, H9 - rows of cells. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0054] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0055] As shown in this specification and claims, unless the context clearly provides an example, the words "a", "an", "the", etc. do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0056] The flowcharts used in this specification are used to illustrate the operations performed by the system according to the embodiments of this specification. It is understood that the operations of each step are not necessarily performed precisely in order. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0057] In order to overcome the shortcomings of the prior art, please refer to Figure 1 This embodiment provides a method for actively reducing delay of a communication device, and the method for actively reducing delay of a communication device includes the following steps:

[0058] S1. Determine all available transmission channels (usually several channels), use the channels that are being used (currently executing transmission tasks) as working channels, and use the channels that are not being used (currently not executing transmission tasks) as idle channels.

[0059] S2. Send a detection data packet through an idle channel. The sending end records the sending time of the detection data packet. When the receiving end receives the detection data packet, it records the receiving time. The time difference between the receiving time and the sending time is used as the delay reference value of the corresponding idle channel. The larger the time difference between the receiving time and the sending time, the larger the delay reference value.

[0060] S3. Set a delay threshold, and use an idle channel whose delay reference value is less than the delay threshold as an available channel.

[0061] S4. Select one or more (the specific number can be flexibly adjusted according to actual needs) idle channels with the smallest delay reference value from the available channels as rotation channels.

[0062] S5. Set a rotation cycle. Every rotation cycle, use the rotation channel as a new working channel to perform transmission work. The original working channel will no longer continue to bear the next transmission work, and the original working channel will be included in the idle channel.

[0063] Through the above design, by repeatedly executing S1 to S5, a suitable channel can be periodically selected as a working channel according to a rotation cycle, and the idle channel is used as an evaluation object, and its possibility of being used as a working channel in the future is judged by evaluating its delay reference value.

[0064] In this way, patrol detection of all available transmission channels is achieved, which can help find channels with delays that meet the requirements, thereby ensuring the delay reliability of the working channels.

[0065] In general, the active delay reduction method for communication equipment provided in this embodiment can actively track the delay of each channel and dynamically match the channels that meet the delay requirements, thereby realizing dynamic management and allocation of each transmission channel, effectively reducing the impact of the large delay of individual channels, and helping to reduce the average delay of the overall transmission work.

[0066] Furthermore, in this embodiment, the communication device active delay reduction method further includes the following steps:

[0067] S6. Establish a statistical model. Figure 3 As shown, the statistical model includes: a reference plane O and a longitudinal axis Z. The reference plane O includes a plurality of columns of cells, and a column of cells corresponds to an available transmission channel. Each cell in the same column is used to correspond to each delay reference value of the available transmission channel. The longitudinal axis Z is perpendicular to the reference plane O, corresponds to the delay reference value, and the starting position (zero point) of the longitudinal axis Z is located at the intersection of the longitudinal axis Z and the reference plane O. Figure 3 In the example, the reference plane O includes cell column L1, cell column L2, cell column L3, cell column L4, cell column L5, cell column L6, cell column L7, cell column L8, and cell column L9, and also includes cell row H1, cell row H2, cell row H3, cell row H4, cell row H5, cell row H6, cell row H7, cell row H8, and cell row H9.

[0068] Cell columns L1, L2, L3, ... L9 correspond to channel 1, channel 2, channel 3, ... channel 9, respectively. Cell row H1 corresponds to the first group of delay reference values ​​of channels 1, channel 2, channel 3, ... channel 9, cell row H2 corresponds to the second group of delay reference values ​​of channels 1, channel 2, channel 3, ... channel 9, cell row H3 corresponds to the third group of delay reference values ​​of channels 1, channel 2, channel 3, ... channel 9, ... cell row H9 corresponds to the ninth group of delay reference values ​​of channels 1, channel 2, channel 3, ... channel 9.

[0069] The number of columns and rows of cells in the reference plane O can be flexibly adjusted and set according to actual needs. Figure 3 The ones shown in are for illustrative purposes only.

[0070] like Figure 2 As shown, the communication device active delay reduction method also includes the following steps:

[0071] S7. Each time S2 is executed, a column chart is constructed at the cells of the corresponding column in the reference plane O according to the delay reference value of the idle channel, and a null value is processed at the cells corresponding to the working channel. Figure 4 As shown, a bar chart corresponding to the delay reference value of group 1 is shown. Among them, the cells without a bar chart in the cell row H1 correspond to a null value, that is, correspond to a working channel.

[0072] In S7, the bar graphs constructed according to the delay reference values ​​obtained by executing the same S2 are set in the same row of the reference plane; and the bar graphs corresponding to different S2 are arranged row by row in the reference plane in sequence.

[0073] S8. After all the delay reference values ​​are counted, all the column chart data of different cell rows on the reference plane O can be obtained. Based on this, the empty value rate of each available transmission channel can be counted, that is, the ratio of the empty value cell station in each cell column to the total number of cells in the cell column where the empty value cell station is located. The empty value rate is used as the basis for evaluating the quality of the channel. The higher the empty value rate, the better the channel.

[0074] S9, extracting a two-dimensional conversion map of the reference plane O, wherein the two-dimensional conversion map contains cells corresponding to the reference plane O. If a cell has a column chart corresponding to the reference plane, a first mark is made for the cell in the two-dimensional conversion map. If a cell does not have a corresponding column chart on the reference plane, a second mark is made for the cell in the two-dimensional conversion map. Thus, a marking result of each column of cells is obtained.

[0075] S10, determine a column of cells with the highest null value rate in the two-dimensional conversion map as a reference column. Find a column of cells in the two-dimensional conversion map that is exactly opposite to the marking result of the reference column, that is, the cells marked with the first mark in the reference column have the corresponding cell positions in this column marked with the second mark, and the cells marked with the second mark in the reference column have the corresponding cell positions in this column marked with the first mark. The available transmission channel corresponding to the selected column of cells is used as the best backup channel.

[0076] The relationship between the best standby channel and the reference column is: when the reference column is used as a working channel, the best standby channel is used as an idle channel, and when the reference column is temporarily used as an idle channel, the best standby channel is used as a working channel. This shows that the delay of the best standby channel is also stable, and it is in an alternating relationship with the reference column.

[0077] Through the above design, while actively reducing the latency, it can also help screen out channels with stable latency, namely the channels corresponding to the reference example and the best backup channels.

[0078] The embodiment of the present invention further provides a method for determining a backup channel, comprising the following steps:

[0079] S6', establishing a statistical model of delay reference values ​​of available transmission channels;

[0080] The statistical model includes: a reference plane and a longitudinal axis; the reference plane includes a plurality of columns of cells, and one column of cells corresponds to one of the available transmission channels; the longitudinal axis is perpendicular to the reference plane, and corresponds to the delay reference value.

[0081] S7', when the currently available transmission channel is an idle channel that is not in use, a detection data packet is sent through the idle channel, and the time difference between the reception time of the detection data packet at the receiving end and the transmission time at the transmitting end is used as the delay reference value of the idle channel, and a bar chart corresponding to the delay reference value is constructed at the cell of the corresponding column in the reference plane; when the currently available transmission channel is a working channel that is in use, a null value processing is performed at the cell of the corresponding column in the working channel in the reference plane.

[0082] Among them, the operation of sending a detection data packet through an idle channel is performed once every set rotation period; after executing the same detection data packet sending operation, the bar chart constructed according to the delay reference values ​​corresponding to all idle channels is set in the same row of the reference plane; the bar charts corresponding to different executions of the detection data packet sending operation are arranged row by row in the reference plane in order of precedence.

[0083] S8', counting the empty value rate of each available transmission channel.

[0084] S9', extracting the two-dimensional conversion map of the reference plane, wherein the two-dimensional conversion map contains cells corresponding to the reference plane; obtaining the marking result of each column of cells, including: for cells in which the bar chart is constructed in the reference plane, making a first mark on the corresponding cells in the two-dimensional conversion map; for cells in which the bar chart is not constructed in the reference plane, making a second mark on the corresponding cells in the two-dimensional conversion map.

[0085] S10', determining a column of cells with the highest null value rate in the two-dimensional conversion map as a reference column; and taking the available transmission channels corresponding to a column of cells in the two-dimensional conversion map with marking results opposite to those of the reference column as the best backup channels.

[0086] Among them, in the current rotation cycle, the idle channel whose delay reference value is less than the delay threshold is used as an available channel; then the idle channel whose delay reference value is the smallest is selected from the available channels as a rotation channel; the rotation channel selected in the current rotation cycle is used as a new working channel to perform transmission work when the next rotation cycle arrives; the working channel in the current rotation cycle is included in the idle channel in the next rotation cycle for performing the detection data packet sending operation.

[0087] Steps S1 to S5 of the active delay reduction method for communication devices may be performed in each rotation cycle; and S7' may be further performed after each execution of S2.

[0088] In summary, the active delay reduction method for communication equipment provided in the embodiment of the present invention can actively track the delay of each channel and dynamically match the channels that meet the delay requirements, thereby realizing dynamic management and allocation of each transmission channel, effectively reducing the impact of the large delay of individual channels, and helping to reduce the average delay of the overall transmission work.

[0089] The method for determining a backup channel provided by the embodiment of the present invention can not only realize active delay reduction, but also help screen out the best backup channel with stable delay so that it can be used alternately with the channel corresponding to the reference example.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for actively reducing delay of a communication device, characterized in that: The following steps S1-S5 are executed cyclically: S1. Determine all available transmission channels, use channels currently in use among the available transmission channels as working channels, and use channels temporarily unused among the available transmission channels as idle channels; S2, sending a detection data packet through the idle channel, the sending end records the sending time of the detection data packet, and the receiving end records the receiving time when receiving the detection data packet, and uses the time difference between the receiving time and the sending time as the delay reference value of the corresponding idle channel; S3, setting a delay threshold, and taking the idle channel whose delay reference value is less than the delay threshold as an available channel; S4, selecting the idle channel with the smallest delay reference value among the available channels as a rotation channel; S5. Set a rotation period, use the rotation channel as the new working channel to perform transmission work every rotation period, and incorporate the original working channel into the idle channel.

2. The method for reducing active delay of a communication device according to claim 1, characterized in that: The following steps are also included: S6. Establishing a statistical model; the statistical model comprises: a reference plane and a longitudinal axis; the reference plane comprises a plurality of columns of cells, one column of cells corresponds to one of the available transmission channels; the longitudinal axis is perpendicular to the reference plane, and corresponds to the delay reference value; S7, each time S2 is executed, a column chart is constructed at the cells of the corresponding column in the reference plane according to the delay reference value of the idle channel, and a null value processing is performed at the cells corresponding to the working channel; S8. Count the empty value rate of each available transmission channel.

3. The method for reducing active delay of communication equipment according to claim 2, characterized in that: In S7, the bar graphs constructed according to the delay reference values ​​corresponding to all idle channels when executing S2 for the same time are set in the same row in the reference plane; the bar graphs corresponding to different executions of S2 are arranged row by row in the reference plane in order of precedence.

4. The method for reducing active delay of communication equipment according to claim 2, characterized in that: The empty value rate obtained in S8 is used as a basis for evaluating the quality of the channel; The higher the empty value rate is, the higher the quality of the corresponding available transmission channel is.

5. The method for reducing active delay of a communication device according to claim 3 or 4, characterized in that: The following steps are also included after S8: S9, extracting a two-dimensional conversion map of the reference surface, wherein the two-dimensional conversion map includes cells corresponding to the reference surface; Obtaining the marking result of each column of cells, including: for cells with the bar chart constructed in the reference plane, making a first mark on the corresponding cells in the two-dimensional conversion map; for cells without the bar chart constructed in the reference plane, making a second mark on the corresponding cells in the two-dimensional conversion map; S10, determining a column of cells with the highest null value rate in the two-dimensional conversion map as a reference column; and taking the available transmission channel corresponding to a column of cells in the two-dimensional conversion map with marking results opposite to those of the reference column as the best backup channel.

6. A method for determining a backup channel, characterized in that: The steps include: S6', establishing a statistical model of the delay reference value of the available transmission channel; the statistical model comprises: a reference plane and a longitudinal axis; the reference plane comprises a plurality of columns of cells, one column of cells corresponds to one of the available transmission channels; the longitudinal axis is perpendicular to the reference plane, and corresponds to the delay reference value; S7', when the currently available transmission channel is an idle channel that is not in use, sending a detection data packet through the idle channel, taking the time difference between the reception time of the detection data packet at the receiving end and the transmission time at the transmitting end as the delay reference value of the idle channel, and constructing a bar chart corresponding to the delay reference value at the cell of the corresponding column in the reference plane; When the currently available transmission channel belongs to a working channel being used, a cell in a corresponding column in the working channel in the reference plane is processed as a null value; The operation of sending a detection data packet through an idle channel is performed once every set rotation period; after the same detection data packet sending operation is performed, the bar graph constructed according to the delay reference values ​​corresponding to all idle channels is set in the same row of the reference plane; the bar graphs corresponding to different executions of the detection data packet sending operation are arranged row by row in the reference plane in order of precedence; S8', counting the empty value rate of each available transmission channel; S9', extracting a two-dimensional conversion map of the reference surface, wherein the two-dimensional conversion map contains cells corresponding to the reference surface; Obtaining the marking result of each column of cells, including: for cells with the bar chart constructed in the reference plane, making a first mark on the corresponding cells in the two-dimensional conversion map; for cells without the bar chart constructed in the reference plane, making a second mark on the corresponding cells in the two-dimensional conversion map; S10', determining a column of cells with the highest null value rate in the two-dimensional conversion map as a reference column; and taking the available transmission channels corresponding to a column of cells in the two-dimensional conversion map with marking results opposite to those of the reference column as the best backup channels.

7. The method for determining a backup channel according to claim 6, characterized in that: In the current rotation cycle, the idle channel whose delay reference value is less than the delay threshold is used as an available channel; Then, the idle channel with the smallest delay reference value is selected from the available channels as a rotation channel; The rotation channel selected in the current rotation cycle is used as a new working channel to perform transmission work when the next rotation cycle arrives; The working channel in the current rotation cycle is included in the idle channel in the next rotation cycle for executing the detection data packet sending operation.

8. The method for determining a backup channel according to claim 6, characterized in that: In each rotation cycle, steps S1-S5 of the active delay reduction method for communication equipment according to claim 1 are executed; and after each execution of S2, S7' is further executed.

9. The method for determining a backup channel according to claim 6, characterized in that: The empty value rate obtained by statistics in S8' is used as a basis for evaluating the quality of the channel; The higher the empty value rate is, the higher the quality of the corresponding available transmission channel is.

10. The method for determining a backup channel according to claim 6, characterized in that: When the reference column is used as a working channel, the best standby channel is used as an idle channel; When the reference column is used as an idle channel, the best standby channel is used as a working channel.

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