WO2022056682A1

WO2022056682A1 - Synchronous communication method, electronic device and storage medium

Info

Publication number: WO2022056682A1
Application number: PCT/CN2020/115369
Authority: WO
Inventors: 蒲川
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2022-03-24
Also published as: CN114982259A

Abstract

The embodiments of the present application relate to wireless communication. Disclosed are a synchronous communication method, an electronic device and a storage medium. The synchronous communication method comprises: within a first offset time after the broadcasting of a synchronous message is completed, receiving, by means of a first channel which broadcasts the synchronous message, a resource request sent by a slave device end (101); in response to the resource request, allocating, to the slave device end, a communication resource used for interacting with a master device end, wherein the communication resource comprises a second offset time (102); and sending the communication resource to the slave device end by means of the first channel (103), wherein the first offset time and the second offset time are both within a time interval between the completion of the former broadcasting of the synchronous message and the start of the latter broadcasting of the synchronous message in two adjacent instances of broadcasting of the synchronous message. According to the synchronous communication method of the embodiments of the present application, bidirectional communication between a master device end and a slave device end can be realized on the basis of existing connectionless synchronous communication.

Description

Synchronous communication method, electronic device and storage medium

technical field

The embodiments of the present application relate to wireless communication, and in particular, to a synchronous communication method, an electronic device, and a storage medium.

Background technique

Connectionless synchronous communication is a communication method that realizes synchronous transmission through a broadcast link in a connectionless mode, and can be applied to Bluetooth technology.

The connectionless synchronous communication implemented in the Bluetooth V5.2 version (Bluetooth LE Audio V5.2) is realized through the Broadcast Isochronous Streams (BIS) protocol, and the sending end master device sends the broadcast in the channel through the BIS protocol. Synchronization message, the receiver and slave device connected to the same channel receive the synchronization message by listening to the broadcast.

Therefore, when the prior art implements connectionless synchronous communication based on the BIS protocol, the communication between the master and slave devices only broadcasts a synchronization message to the slave devices, and only one-way communication is performed between the master and slave devices.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a synchronous communication method, electronic device and storage medium, so that when the existing Bluetooth technology realizes connectionless synchronous communication, two-way communication between the master and slave devices in the connectionless synchronous communication mode can be realized. .

In order to solve the above technical problems, the embodiments of the present application provide a synchronization communication method, which is applied to a master device and includes the following steps: within a first offset time after the synchronization message broadcast is completed, broadcast the first synchronization message through the first offset time. The channel receives the resource request sent by the slave device; in response to the resource request, the slave device is allocated communication resources for interacting with the master device; the communication resource includes the second offset time; the communication resource is sent to the slave device through the first channel Resource; wherein, the first offset time is within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, and the second offset time in the two adjacent synchronization messages The time interval between the completion of the previous synchronization message broadcast and the start of the next synchronization message broadcast.

The embodiment of the present application also provides a synchronous communication method, which is applied to a slave device and includes the following steps: within a first offset time after receiving a synchronization message broadcast by the master device, The channel sends a resource request to the master device; the communication resource for interacting with the master device is received from the master device through the first channel; the communication resource includes a second offset time relative to the completion of the synchronization message broadcast; wherein, the first offset The shift time and the second shift time are both within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages. Embodiments of the present application further provide an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor. The processor executes, so that at least one processor can execute the above-mentioned synchronous communication method applied to the master device end, the master device end is an electronic device, or can execute the above-mentioned synchronous communication method applied to the slave device end, and the slave device end is an electronic device. equipment.

Embodiments of the present application further provide a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the above-mentioned synchronous communication method applied to the master device side is implemented, or the above-mentioned method applied to the slave device side is implemented. Synchronous communication method.

Compared with the prior art, in the embodiment of the present application, within the first offset time within the broadcast time interval of the synchronization message, the slave device sends a resource request to the master device through the first channel for broadcasting the synchronization message, and the master device sends a resource request to the master device. Receive the resource request from the slave device from the first channel, respond to the resource request, allocate the communication resource including the second channel and the second offset time to the slave device for interaction, send the communication resource to the slave device through the first channel, and send the communication resource to the slave device through the first channel. The device end receives the communication resource through the first channel. Because within the first offset time, the master device and the slave device complete a communication resource allocation interaction in the first channel of the broadcast synchronization message, and by allocating the second offset time, the master device and the slave device can be realized Two-way communication between peers. Therefore, the master device end and the slave device end realize two-way communication on the basis of the existing connectionless synchronous communication, and the two-way interaction between the master device end and the slave device end can be realized.

In addition, the communication resource further includes a second channel. In this embodiment, by adding the second channel, the master device can allocate different channels to different slave devices with the same second offset time, thereby increasing the number of interactable slave devices, and due to the addition of the second channel, That is, the channel through which the master-slave device interacts is different from the channel through which the master device broadcasts the synchronization message, so that the interference to the synchronization message can be reduced as much as possible.

In addition, after the master device sends the communication resources to the slave device through the first channel, the method further includes: accessing the second channel to interact with the slave device within the second offset time after the synchronization message broadcast is completed. In this embodiment, the master device end may access the second channel within the second offset time to implement interaction with the slave device end. That is, the master device side can choose to interact with the slave device side by selecting to access the second channel when needed.

In addition, within the second offset time after the synchronization message broadcast is completed, accessing the second channel to interact with the slave device includes: accessing the second channel within the second offset time after the synchronization message broadcast is completed , and interact with the slave device in response mode or non-reply mode; in which, in the response mode, the master device receives the interactive message sent by the slave device and responds to the interactive message; in the non-reply mode, the master device The device side only receives interactive messages sent from the device side. In this embodiment, in the non-response mode, the master device does not need to respond to the interactive messages from the slave device, the power consumption of the master device is small, and more interactions between the slave devices can be completed in the same time; in the response mode, the master device The terminal responds to the interactive message from the slave device, and the slave device confirms that the interactive message has been received based on the response, so there is no need to repeatedly send the same interactive message in order to improve the reception probability of the interactive message, and the redundant transmission of the same interactive message is avoided. Causes the power consumption of the slave device to increase.

In addition, in response to the resource request, allocating communication resources for the slave device to interact with the master device includes: in response to the resource request, if it is determined that a preset resource allocation condition is satisfied, allocating the slave device for communication with the master device. Communication resources for terminal interaction; wherein, the resource allocation conditions include at least one of the following conditions: the slave device is a preset device that allows interaction with the master device, and the number of slave devices that have been allocated communication resources does not reach the preset number upper limit of . In this embodiment, when the number of allocated slave devices does not reach the upper limit, it is possible to avoid too many allocated communication resources, which exceeds the range that can be handled by the master device; It can avoid allocating communication resources to devices that are not allowed to interact, causing non-interacting devices to occupy communication resources and causing waste of communication resources. Therefore, reasonable allocation of communication resources can be achieved.

In addition, after the master device accesses the second channel to interact with the slave device within the second offset time after the synchronization message broadcast is completed, it further includes: if within the second offset time after the synchronization message broadcast is completed , the communication resources allocated to the slave device are recovered when the number of failures of interaction through the second channel exceeds the preset number of times. In this embodiment, by recycling the communication resources of the slave devices that access the second channel several times in a row and the interaction fails, the occupation of the communication resources by the slave devices that fail to interact can be released, so that the communication resources are prevented from being occupied for a long time and the communication resources are not occupied for a long time. Utilization of communication resources.

In addition, the first offset time and the second offset time do not overlap; and/or, the second offset times of different slave devices do not overlap. In this embodiment, when the first offset time and the second offset time do not overlap, between any two adjacent synchronization messages, a request for resources from a newly added slave device and a request for resources from a slave device that has allocated resources are sent. All messages can be collected once. When the second offset times of different slaves do not overlap, between any two adjacent synchronization messages, all messages sent by the slaves can be collected once. Therefore, the rational use of the time interval between any two adjacent synchronization messages can be realized, and the interaction efficiency between the master and slave devices can be improved.

In addition, within the first offset time after the broadcast of the synchronization message is completed, before receiving the resource request sent from the device side through the first channel for broadcasting the synchronization message, the method further includes: determining the broadcast of the previous synchronization message in the two adjacent synchronization messages The time interval between the completion and the start of the next synchronization message broadcast satisfies the preset time length condition; the time length condition includes: the difference between the time interval and the time length of the first offset time is greater than or equal to the preset time length, and the time interval and the first The difference between the time lengths of the two offset times is greater than or equal to the preset time length. In this embodiment, the resource request is only received from the second channel when the time interval is greater than the time length of the first offset time and the time length of the second offset time, that is, the master channel is activated only when the time interval is sufficient. The two-way communication mechanism between the device end and the slave device end avoids the problem that the time interval is not long enough, which may affect the normal broadcast of synchronization messages in connectionless synchronous communication.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute limitations of the embodiments, and elements with the same reference numerals in the drawings are denoted as similar elements, Unless otherwise stated, the figures in the accompanying drawings do not constitute a scale limitation.

FIG. 1 is a flowchart of an example of a synchronous communication method provided according to a first embodiment of the present application;

2 is a schematic diagram of a time interval between two adjacent synchronization message broadcasts provided according to the first embodiment of the present application;

3 is a flowchart of another example of a synchronous communication method provided according to the first embodiment of the present application;

FIG. 4 is a schematic diagram of interaction between different slave device assignments and overlapping second offset times provided according to the first embodiment of the present application;

5 is a flowchart of an example of a synchronous communication method provided according to the second embodiment of the present application;

6 is a flowchart of another example of a synchronous communication method provided according to the second embodiment of the present application;

FIG. 7 is a flowchart of another example of a synchronous communication method provided according to the second embodiment of the present application;

FIG. 8 is a flowchart of a synchronous communication method provided according to a third embodiment of the present application;

FIG. 9 is a flowchart of a synchronous communication method provided according to a fourth embodiment of the present application;

FIG. 10 is a flowchart of an example of a synchronous communication method provided according to the fifth embodiment of the present application;

11 is a flowchart of another example of a synchronous communication method provided according to the fifth embodiment of the present application;

12 is a flowchart of a synchronous communication method provided according to a sixth embodiment of the present application;

FIG. 13 is a schematic diagram of a synchronous communication electronic device provided according to a seventh embodiment of the present application.

specific embodiment

In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that, in each embodiment of the present application, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be realized. The following divisions of the various embodiments are for the convenience of description, and should not constitute any limitation on the specific implementation of the present application, and the various embodiments may be combined with each other and referred to each other on the premise of not contradicting each other.

The first embodiment of the present application relates to a synchronous communication method, which is applied to a master device, and the specific process is shown in FIG. 1 .

Step 101, within the first offset time after the broadcast of the synchronization message is completed, receive a resource request sent from the device through the first channel for broadcasting the synchronization message;

Step 102, in response to the resource request, allocate communication resources for the slave device to interact with the master device, and the communication resources include a second offset time;

Step 103: Send communication resources to the slave device through the first channel.

The first offset time is within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, and the second offset time is in the previous synchronization message in the two adjacent synchronization messages. The time interval between the completion of the synchronization message broadcast and the start of the next synchronization message broadcast.

Compared with the prior art, in this embodiment, the master device receives the resource request sent by the slave device through the first channel that broadcasts the synchronization message within the first offset time after the synchronization message is broadcast, and sends it through the first channel. A channel transmission is a communication resource allocated by the slave device to interact with the master device, and the communication resource includes the second offset time; that is, the interaction between the master device and the slave device can be realized within the second offset time; Moreover, since the first offset time and the second offset time are both within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, the master and slave devices are passing The interaction of the second channel will not affect the normal broadcast of the synchronization message; therefore, the embodiment of the present application can realize bidirectional communication between the master and slave devices in the connectionless synchronization communication mode.

The implementation details of the synchronous communication method in this embodiment will be specifically described below, and the following contents are only provided for the convenience of understanding, and are not necessary for implementing this solution.

The synchronous communication method in the present embodiment is used to realize the interaction between the master device end and the slave device end in the connectionless synchronous communication; the existing connectionless synchronous communication usually adopts the broadcast synchronization (Broadcast Isochronous Streams, BIS) transmission mode. For example, in the Bluetooth broadcast audio technology implemented based on Bluetooth low energy consumption, the BIS protocol is used for synchronous transmission of audio data. The master device that sends messages in the connectionless synchronous communication can be understood as the master device side, and the slave device that receives messages in the connectionless synchronous communication can be understood as the slave device side.

For example, in the example of a multi-person conference, the master device is the conference audio playback device, and the listener and the host respectively use the slave device, such as a Bluetooth headset. The master device transmits conference audio data synchronously to multiple slave devices. In the existing multi-person conference, the master device broadcasts the audio data in the non-connected way of BIS, regardless of the status of each slave device; each slave device receives the audio data synchronously through the BIS protocol, and then plays or use. When the audience and the host have doubts and need to suspend the conference audio or implement other controls, it cannot be achieved with the existing technology; and in the synchronous communication method of this embodiment, the master device can exchange messages with the slave device, so that the master device can communicate with each other. Listeners, hosts' willingness to pause meeting audio or implement other controls can be informed and reacted to.

For another example, in the example of classroom teaching, the device used by the teacher is used as the master device, and the device used by the students is used as the slave device. With the existing transmission method using BIS, only the teacher can speak and the students can listen, but the students cannot. In the interaction with the teacher, when a student wants to speak, he cannot signal to the teacher; in the synchronous communication method of this embodiment, the master device used by the teacher can exchange messages with the slave device used by the student, so that the teacher can know Students' speaking needs, to achieve interaction with students.

In step 101, the first channel refers to a channel for broadcasting a synchronization message, for example, the synchronization message is the audio data in the above multi-person conference example, or the audio data generated by the teacher's speech in the classroom teaching example.

The first offset time is within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, that is, the first offset time is a time range, for example, 0ms～ 2ms, 2ms～3ms; if the time interval is 10ms, then the time range of the first offset time is a certain range between 0～10ms. The first offset time can be directly stored in the form of a time range, such as 0ms to 2ms above, or can also be stored in the form of a starting time point and a duration, such as the starting time point is 0ms, and the duration is 2ms; or, the starting time point is 2 and the duration is 2ms.

The time interval between two adjacent synchronization message broadcasts, as shown in Figure 2, takes one synchronization message broadcast as a broadcast synchronization group BIG (Broadcast Isochronous Groups) event (BIG event), and each synchronization message can contain multiple BIS sub-events (BIS Subevent), and a Control Subevent (Control Subevent), there is a time interval between the two BIG events. Among them, the figure shows BIG event x, BIG event x+1, and BIS Subevent1, BIS Subevent 2, BIS Subevent3, and Control Subevent included in BIG event x, and BIS Subevent1, BIS included in BIG event x+1. Subevent 2, BIS Subevent3, Control Subevent

The first offset time may be a fixed time, and the first offset time may be preset in the master device end and the slave device end in advance, or the first offset time may be preset by the master device end, and the master device end In a certain synchronization message or before the slave device is synchronized to the master device, it is sent in the form of broadcast. For example, a BIG Info field is included in the broadcast used for synchronization between the slave device and the master device, and the field contains the data required for synchronization between the slave device and the master device. The first offset can be The time information is carried in BIG Info to notify all slave devices of the first offset time.

For example, in the case where both the master device and the slave device know the first offset time in advance, the slave device sends a resource request through the first channel within the first offset time, and the master device listens to the broadcast by means of , and receive the resource request sent from the device from the first channel that broadcasts the synchronization message. The resource request may include identification information of the slave device, and the identification information may be the address of the slave device, the unique identification code of the slave device, and the like. Wherein, the identification information of the slave device is used as the identification of the slave device in the request information. Among them, the slave device that can send the resource request in the first channel can be understood as the slave device that has received the synchronization message in the first channel, that is, the slave device that has been synchronized with the master device. Therefore, the master device can know which slave devices have synchronized the synchronization messages sent by itself.

The first offset time can also be set by the master device according to the actual situation; for example, according to the network conditions of the network environment where the master device is located, the first offset time is set, and the new first offset time is notified to the slave. The device side, for example, in a synchronization message or before the slave device side synchronizes to the master device side, broadcast and send it out. As mentioned above, the first offset time can be carried in the synchronization message, that is, carried in the synchronization message. The control sub-event, or, is carried in the field of BIG Info.

The duration of the first offset time may also be variable. In addition to the preset fixed time, a delay duration is preset to delay the first offset time under special circumstances. For example, the master device is receiving a resource request, but the first offset time has not been completed yet. If there is no delay time, the master device will stop receiving the resource request at this time, because the resource request only receives When a part is reached, it can only be discarded; and if there is a delay time, you can choose to extend the length of the first offset time, and add a delay time to the first offset time on the basis of the preset fixed time. . If the extended first offset time exceeds the time interval between synchronization message broadcasts, the first offset time is only extended until the synchronization message broadcast is sent.

In step 102, the second offset time is a time period within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages; that is, the second offset time is also a time period The range is, for example, 2ms～3ms, 3ms～4ms; if the time interval is 10ms, then the time range of the second offset time is a certain range between 0～10ms. The second offset time may or may not overlap with the first offset time; the second offset times of different slave devices may or may not overlap. The termination time point of the previous second offset time may be the start time point of the next second offset time, or it may be set that there is a time between the previous second offset time and the next second offset time interval.

The second offset time can be a fixed time, the master device can preset the second offset time of the same length for all slave devices, or it can be set by the master device according to the actual situation; According to the number of interactions, the second offset time of different lengths is allocated to the slave device side, and the second offset time allocated to the slave device side with a greater number of interactions is longer.

The duration of the second offset time may also be variable. In addition to the preset fixed time, a delay duration is preset to delay the second offset time under special circumstances. For example, the master device is receiving an interactive message, but the reception has not been completed but the first offset time has expired. If there is no delay time, the master device will stop receiving the interactive message at this time, because the interactive message only receives When a part is reached, it can only be discarded; and if there is a delay time, you can choose to extend the duration of the second offset time. On the basis of the preset fixed time, add a delay time to the second offset time. . If the extended second offset time exceeds the time interval between synchronization message broadcasts, the second offset time is only extended until the synchronization message broadcast is sent.

In one example, allocating communication resources for the slave device to interact with the master device includes: in response to the resource request, if it is determined that the preset resource allocation condition is satisfied, allocating the slave device to interact with the master device. The communication resources; wherein, the resource allocation conditions include at least one of the following conditions: the slave device is a preset device that allows interaction with the master device, and the number of slave devices that have been allocated communication resources does not reach the preset upper limit limit. In this embodiment, by judging the resource allocation conditions before responding to the resource request, and only allocating communication resources to the slaves that meet the preset resource allocation conditions, the communication resources can be selectively allocated to the slaves, so as to improve the meet the actual needs well.

In step 103, the master device may send a response message of the requested resource to the slave device through the first channel in the form of broadcast, and the response message carries the communication resource allocated for the master device and the identification information of the slave device. The slave device will recognize the response message with its own identification information, record the communication resources carried in the response message, and use the communication resources to communicate with the master device.

When the master device receives a resource request, in addition to sending a response message to the slave device to respond to the request, it also deduplicates the request. Before allocating communication resources to the slave device, the master device will check whether the slave device has allocated communication resources and whether the communication resources still belong to the slave device. For a request sent from the same slave device, if the slave device has allocated communication resources belonging to it, the slave device will no longer allocate communication resources to the slave device. Even if the master device has previously allocated communication resources to the slave device, but now the communication resource does not belong to the slave device, the master device will still allocate another communication resource to the slave device.

In one example, the first offset time and the second offset time do not overlap and the second offset times of different slave devices do not overlap; as shown in FIG. 3 , the master device sends communication to the slave device through the first channel After the resource, it may further include: Step 104: within the first offset time within the time interval between the completion of the Nth synchronization message broadcast and the N+1th synchronization message broadcast start, receive the slave device through the first channel The resource request sent by the terminal, and within the time interval between the completion of the Nth synchronization message broadcast and the start of the N+1th synchronization message broadcast within the second offset time of the different slave devices, through the first channel and different Interact from the device side.

If the first offset time and the second offset time of different slave devices do not overlap, they may also be consecutively divided time intervals within the time interval, so that the time interval can be fully utilized. For example, the time interval is 10ms, the first offset time is 0~2ms, and there are 4 second offset times, 2~4ms, 4~6ms, 6~8ms, 8~10ms, at this time, four Two offset times, allocated to the four slave sides.

In step 104, after receiving the communication resource from the device, it sends an interactive message to the master through the first channel within the second offset time, and the master monitors the first channel during the second offset. Receive interactive messages sent from the device side. When the second offset time allocated to the slave device ends, the slave device end no longer sends interactive messages, and the master device end stops monitoring the first channel. Until the next second offset time allocated by the master device end, the master device end monitors the interaction message sent by the slave device end corresponding to the next second offset time. And because the first offset time and the second offset time are both within the time interval between the completion of the previous synchronization message broadcast and the start of the next synchronization message broadcast in two adjacent synchronization messages, the first offset time and the second The offset time does not overlap and the second offset time of different slave devices does not overlap. The resource request and interaction process between the slave device and the master device and the synchronization message broadcast do not conflict with each other. Two-way communication is realized.

In other examples, the second offset times allocated by different slave devices may also overlap, but the slave devices with overlapping second offset times cannot interact with the master device in the same time interval. For example, as shown in Figure 4, suppose that the Nth BIG event occurs from 20 to 30ms, the N+1th BIG event occurs from 35 to 45ms, and the N+2th BIG event occurs from 50 to 60ms, so 30 to 35ms is the Nth BIG event. The time interval between the N+1th and N+1th BIG events, and 45 to 50 ms is the time interval between the N+1th and N+2th BIG events. The master device can allocate a second offset time for the slave device A, the slave device B, and the slave device C in a time interval, wherein the second offset time between the slave device A and the slave device C Completely overlapping, so slave A and slave C cannot interact with the master in the same time interval, and the time interval between slave A's Nth and N+1th BIG events is the same as The master device interacts, and the slave device C interacts with the master device at the time interval between the N+1th and N+2th BIG events.

The steps of the above various methods are divided only for the purpose of describing clearly. During implementation, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as the same logical relationship is included, they are all within the protection scope of this patent. ;Adding insignificant modifications to the algorithm or process or introducing insignificant designs, but not changing the core design of the algorithm and process are all within the scope of protection of this patent.

The second embodiment of the present application relates to a synchronous communication method. The second embodiment is roughly the same as the first embodiment, and the main difference is that in the second embodiment of the present application, the communication resources allocated by the master device to the slave devices also include a second channel, and the interaction between the master and slave devices directly passes through The second channel is complete.

Among them, the second channel is a dedicated channel allocated by the master device to the slave device to realize interaction. In order to save communication resources and control the number of channels used by the master device, a second channel can be assigned to multiple different slave devices. , but a slave side can only be assigned one second channel.

In this embodiment, by adding the second channel, the master device can allocate different channels to different slave devices with the same second offset time, thereby increasing the number of interactable slave devices, and due to the addition of the second channel, That is, the channel through which the master-slave device interacts is different from the channel through which the master device broadcasts the synchronization message, so that the interference to the synchronization message can be reduced as much as possible.

In one example, as shown in Figure 5, the synchronous communication method includes:

Step 201, within the first offset time after the broadcast of the synchronization message is completed, receive the resource request sent from the device side through the first channel for broadcasting the synchronization message;

Step 202, in response to the resource request, allocate communication resources for the slave device to interact with the master device, and the communication resources include a second channel and a second offset time;

Step 203, sending communication resources to the slave device through the first channel;

Step 204, within the second offset time after the broadcast of the synchronization message is completed, access the second channel to interact with the slave device.

Steps

201, 202, and 203 in this embodiment are substantially the same as

steps

101, 102, and 103 in the first embodiment, and will not be repeated here. The difference is that in step 204, the master device will access the second channel to interact with the slave device.

During the second offset time, accessing the second channel can realize that during the second offset time, when the master device chooses to interact with the slave device, it can be established by accessing the second channel assigned to the slave device. The interaction channel with the slave device is used to interact with the slave device. When the master device chooses not to interact with the slave device, as long as it does not access the second channel, it will not receive the interaction message sent by the slave device. Therefore, the master device can choose whether to interact with the slave device by selecting to access the second channel when needed, so as to avoid message interference from the slave device caused by the second channel when no interaction is required. Wherein, accessing the second channel includes: adjusting the receiving frequency band of the master device to the frequency band used by the second channel.

The master device can preset the slave device that needs to interact this time for the interval between each synchronization message broadcast, and access the second channel allocated by the slave device in the preset order to receive the transmission from the slave device. interactive message. The preset interaction sequence at the slave device side needs to consider the second offset time allocated by each slave device side. At the end of the second offset time allocated by the slave device, the interaction between the master device and the slave device ends, the master device interacts with the next slave device according to the preset interaction sequence, and accesses the next slave device. The second channel assigned to the terminal. If the next slave device end and the slave device end of this interaction are allocated the same second channel, the master device end does not change the accessed second channel. The master device can also select a slave device whose second offset time is after the current time and before the next synchronization message broadcast starts in real time after completing the interaction with a slave device, and access the second slave device allocated by the slave device. Channel to interact with this slave.

Alternatively, the interaction between the master device and the slave device may further include: the master device actively sends an interaction message to the slave device. For example, in the example of classroom teaching, the teacher can name a student to speak, and at this time, he can actively send interactive information to the slave device used by the student indicating the request to speak; or, the teacher finds that a student is deserting, and can take the initiative at this time. Send interactive information representing classroom discipline reminders to the slave device used by the student.

In an example, step 204 is specifically, within the second offset time after the broadcast of the synchronization message is completed, accessing the second channel and interacting with the slave device in an answering mode or a non-answering mode. Among them, in the response mode, within the second offset time after the broadcast of the synchronization message is completed, access the second channel, receive the interaction message sent from the device side, and respond to the interaction message; in the non-reply mode, in the Within the second offset time after the broadcast of the synchronization message is completed, the second channel is accessed, and only the interaction message sent from the device side is received.

The response of the master device to the interactive message from the slave device may be performed immediately after receiving the interactive message, that is, within the second offset time corresponding to the slave device, through the second channel corresponding to the slave device. Send the response message of the interactive message to the slave device. In the non-response mode, the master device does not need to respond to the interactive messages from the slave device, the power consumption of the master device is small, and more interactions from the slave device can be completed in the same time; in the response mode, the master device can The slave device responds to the interaction message, and the slave device confirms that the interaction message has been received based on the response, so that it is not necessary to repeatedly send the same interaction message multiple times in order to improve the reception probability of the interaction message, and avoid redundant transmission of the same interaction message. The power consumption on the device side increases.

Further, as shown in FIG. 6, before interacting with the slave device in the response mode or the non-response mode, that is, before step 204, it also includes: step 203-1, according to at least one of the following information, determine to adopt the response mode or non-response mode to interact with the slave device; the information includes: the network quality of the network environment where the master device is located, and whether the slave device is designated to use the response mode or the non-response mode. Wherein, although step 203-1 is located between

steps

203 and 204 in FIG. 5, in fact, step 203-1 only needs to occur before step 204. In this embodiment, the master device can select a response mode or a non-reply mode, and selectively respond to the interactive message sent by the slave device, so as to better meet actual needs and achieve better interaction effects.

In one example, according to at least one of the following information, determining to use the response mode or the non-response mode to interact with the slave device includes: if multiple evaluation indicators of the network environment where the master device is located satisfies a preset condition, or , the slave device is designated to use the non-response mode, and it is determined to use the non-response mode to interact with the slave device; wherein the multiple evaluation indicators include at least one of signal strength and bit error rate. In this embodiment, when multiple evaluation indicators of the network environment where the master device is located satisfies the preset conditions or the slave device is designated to use the non-permissive mode, the master device uses the non-response module to interact with the slave device. In the response mode, the master device does not need to respond to the interactive messages from the slave device. The power consumption of the master device is small, and more interactions from the slave device can be completed in the same time. At the same time, the second channel only needs to transmit the data sent by the slave device. The interactive messages only need to be transmitted in one direction, and the requirements for the network are also low. Therefore, using the non-response mode can reduce the power consumption of the master device and reduce the requirements for the second channel.

Further, the master device side uses the non-response mode to interact with the slave device side by default, when the slave device side is designated as the response mode, or, the network quality of the network environment where the master device side is located belongs to a non-high-quality network environment, and/or , when the slave device is not designated to use the non-response mode, the master device uses the response mode to interact with the slave device.

In one example, the first offset time and the second offset time do not overlap; and/or, the second offset times of different slave devices do not overlap. In this embodiment, when the first offset time and the second offset time do not overlap, between any two adjacent synchronization messages, a request for resources from a newly added slave device and a slave device that has allocated resources are sent. All messages can be collected once. When the second offset times of different slaves do not overlap, between any two adjacent synchronization messages, all messages sent by the slaves can be collected once. Therefore, the rational use of the time interval between any two adjacent synchronization messages can be realized, and the interaction efficiency between the master and slave devices can be improved.

In one example, the first offset time and the second offset time may partially or completely overlap, and the second offset times of different slave devices may partially or completely overlap. When the second offset time of one slave device overlaps with the first offset time or the second offset time of another slave device and the allocated second channel is the same, the slave device will broadcast the synchronization message within the time interval of this synchronization message. Do not interact with the master device, and wait for the second offset time of the next synchronization message broadcast interval before interacting with the master device.

In an example, the first offset time and the second offset time do not overlap, and the first offset time is earlier than the second offset time; as shown in FIG. 7 , the communication resource is sent to the slave device through the first channel After that, the method further includes: Step 205, within the first offset time within the time interval between the completion of the Nth synchronization message broadcast and the N+1th synchronization message broadcast start, receiving the transmission from the device side through the first channel and within the second offset time within the time interval between the completion of the Nth synchronization message broadcast and the start of the N+1th synchronization message broadcast, access the second channel to interact with the slave device ; where N is an integer greater than or equal to 1. In this embodiment, by setting the first offset time and the second offset time to be non-overlapping and earlier than the second offset time, after the synchronization message broadcast is completed, the master device first receives the resource request from the slave device, and then receives Enter the second channel to interact with the slave device. Since the channel for receiving the resource request from the slave device is the same as the channel for broadcasting the synchronization message, the number of channel switching can be reduced, thereby saving the power consumption of the master device.

Further, in the case where the second offset times of different slave devices do not overlap; step 205 may be specifically, within the time interval between the completion of the Nth synchronization message broadcast and the start of the N+1th synchronization message broadcast. Within the first offset time, the resource request sent from the device is received through the first channel, and the time interval between the completion of the Nth synchronization message broadcast and the start of the N+1th synchronization message broadcast can vary from During the second offset time of the device side, access the second channel of the different slave device side to interact with the different slave device side. In this embodiment, multiple interaction messages sent from the device side may be received in one synchronization message broadcast time interval.

The third embodiment of the present application relates to a synchronous communication method. The third embodiment is substantially the same as the second embodiment, and the main difference lies in that: in the third embodiment of the present application, the master device reclaims the communication resources allocated by the slave device that fail to interact for many times in a row.

A specific flow chart of this embodiment is shown in FIG. 8 , which will be described in detail below.

Step 301, within the first offset time after the broadcast of the synchronization message is completed, receive the resource request sent from the device side through the first channel of the synchronization message;

Step 302, in response to the resource request, allocate communication resources for the slave device to interact with the master, the communication resources include a second channel and a second offset time;

Step 303, sending communication resources to the slave device through the first channel;

Step 304, within the second offset time after the broadcast of the synchronization message is completed, access the second channel to interact with the slave device;

Step 305 , if the number of interaction failures exceeds the preset number of times through the second channel within the second offset time after the broadcast of the synchronization message is completed, the communication resources allocated to the slave device are recovered.

Steps

301 , 302 , 303 , and 304 in this embodiment are substantially the same as

steps

201 , 202 , 203 , and 204 in the second embodiment, and will not be described again.

In step 305, the reason for the failure of the interaction may be that there is a problem in the transmission process of the message, the message is lost in the transmission process and cannot be received by the master device, or the slave device has no interaction requirement and does not send a message to the master device, etc. It can be seen that when there is a slave device that fails to interact with the second channel during the second offset time for many times in a row, its communication resources exist to allocate an inappropriate transmission channel to the slave device, causing the master and slave devices to be unable to interact. , or the long-term invalid occupation of communication resources by the slave device without interaction requirements, in this embodiment, by recycling the communication resources of the slave device that has continuously accessed the second channel for multiple times and the interaction fails, the slave device that fails to interact can be released. End-to-end occupation of communication resources, avoid long-term invalid occupation of communication resources, and improve the rational utilization of communication resources.

Further, when the master device recycles the communication resources allocated to the slave device, it sends a recovery message to the slave device on the first channel to notify the slave device that this communication resource is recovered, so that the recovery message can be accurately received from the device. , the recovery message can contain the identification information of the slave device. When the slave device needs to interact with the master device, it will send a resource request to the master device again.

The master device will record the corresponding relationship between the allocated slave device and communication resources. When the communication resources are allocated to the slave device and the communication resources of the slave device are recovered, the master device will record the allocated slave device and communication resources. The corresponding relationship of communication resources is modified.

The fourth embodiment of the present application relates to a synchronous communication method. The fourth embodiment is roughly the same as the second embodiment, and the main difference is that: in the fourth embodiment of the present application, before receiving the resource request sent by the slave device, the master device determines that the broadcast time interval of the synchronization message satisfies the preset time interval. duration condition.

In this embodiment, the specific flowchart of this embodiment is shown in FIG. 9 :

Step 401-1, within the first offset time after the broadcast of the synchronization message is completed, determine that the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages satisfies a preset duration condition;

Step 401-2, within the first offset time, receive the resource request sent from the device through the first channel of the broadcast synchronization message;

Step 402, in response to the resource request, allocate communication resources for interacting with the master device end for the slave device end, the communication resources including the second channel and the second offset time completed with respect to the synchronization message broadcast;

Step 403: Send communication resources to the slave device through the first channel.

Within the first offset time after the broadcast of the synchronization message is completed, before the resource request sent from the device is received through the first channel of the broadcast synchronization message, it is determined that the broadcast of the previous synchronization message in the two adjacent synchronization messages is completed to the next synchronization. The time interval between the start of message broadcasting satisfies the preset duration condition; the duration condition includes: the difference between the time interval and the time length of the first offset time is greater than or equal to the preset duration, and the difference between the time interval and the second offset time is greater than or equal to the preset duration. The difference in time length is greater than or equal to the preset time length. In this embodiment, the resource request is received from the second channel only when the time interval is greater than the time length of the first offset time and the time length of the second offset time respectively, that is, the start is made when the time interval is guaranteed to be sufficient. The two-way communication mechanism between the master device and the slave device avoids the problem that the time interval is not long enough, which may affect the normal broadcast of synchronization messages in connectionless synchronization communication.

Preferably, the preset duration should be greater than or equal to the duration of completely receiving the resource request, so as to ensure that at least one resource request can be completely received by the master device within the time interval, so as to ensure that the master device can choose to communicate with at least one slave device. communication, so as to ensure that synchronous communication can be carried out effectively.

Further, the time length condition further includes: the time interval is greater than or equal to the sum of the time length of the first offset time and the time length of the second offset time. Therefore, it is ensured that the master device can not only allocate communication resources to the slave device, but also interact with the slave device within a time interval, thereby ensuring that the synchronous communication can be carried out effectively.

In one example, the first offset time and the second offset time do not overlap, and the second offset times of different slave devices do not overlap; after sending the communication resources to the slave device through the first channel, the method further includes: at the Nth During the first offset time within the time interval between the completion of the second synchronization message broadcast and the start of the N+1th synchronization message broadcast, the resource request sent from the device is received through the first channel, and the Nth synchronization message is received within the first offset time. Interact with different slave devices through the first channel within the second offset time of different slave devices within the time interval between the completion of the broadcast and the start of the N+1th synchronization message broadcast. In this embodiment, by receiving the resource request sent by the slave device through the first channel within the first offset time, and completing the interaction with the slave device within the second offset time, the connectionless synchronous communication mode can be realized. The interaction between the master and slave devices.

The fifth embodiment of the present application relates to a synchronous communication method, which is applied to a slave device, and the specific process is shown in FIG. 10 .

Step 501, within the first offset time after receiving the synchronization message broadcast by the master device, send a resource request to the master device through the first channel for receiving the synchronization message;

Step 502: Receive communication resources from the master device for interaction with the master device through the first channel, where the communication resources include the second offset time.

In this embodiment, within the first offset time after the broadcast of the synchronization message is completed, the slave device receives the resource request sent to the master device through the first channel for broadcasting the synchronization message, and receives the allocation from the master device through the first channel. The communication resources of the interaction include the second offset time relative to the completion of the synchronization message broadcast; that is, the interaction between the master device and the slave device can be realized within the second offset time; and, due to the first The offset time and the second offset time are both within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, so the master and slave devices are interacting through the second channel. It will not affect the normal broadcast of the synchronization message; therefore, the embodiment of the present application can realize the two-way communication between the master and slave devices in the connectionless synchronization communication mode.

The execution subject in this embodiment is the slave device end in synchronous communication, which interacts with the master device end in the above-mentioned embodiment.

In step 501, within the first offset time after receiving the synchronization message broadcast by the master device, the slave device sends a resource request to the master device in the form of broadcasting through the first channel for receiving the synchronization message. Contains the identification information of the slave device that sends the request. The identification information can be the address of the slave device, the identification code generated by the slave device, etc. Wherein, the identification information of the slave device is used as the identification of the slave device in the request information. Before the master device sends a synchronization message, it will broadcast a message to all slave devices to notify all slave devices of the period and first offset time of the synchronization message sent. period and first offset time.

In step 502, a communication resource for interacting with the master device is received from the master device through the first channel, and the communication resource includes a second offset time relative to the completion of the synchronization message broadcast. The first offset time and the second offset time are both within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages. After the slave device receives the communication resource sent by the master device, it will save the communication resource information, and use this communication resource in the subsequent interaction with the master device.

Preferably, the communication resource further includes a second channel. In this embodiment, by adding the second channel, the master device can allocate different channels to different slave devices with the same second offset time, thereby increasing the number of interactable slave devices, and due to the addition of the second channel, That is, the channel through which the master-slave device interacts is different from the channel through which the master device broadcasts the synchronization message, so that the interference to the synchronization message can be reduced as much as possible.

In one example, the first offset time and the second offset time do not overlap; and/or, the second offset times of different slave devices do not overlap.

In an example, after the slave device sends the communication resources to the master device through the first channel, as shown in FIG. 11 , it further includes:

Step 503: Access the second channel to interact with the master device within the second offset time after the broadcast of the synchronization message is completed. In this embodiment, the slave device can access the second channel within the second offset time to realize interaction with the master device.

In step 503, during the second offset time, the second channel is accessed, so that within the second offset time, an interaction channel with the master device can be established by accessing the assigned second channel, and an interaction channel with the master device can be established. The interaction on the main device side,

Wherein, the slave device can choose to access the second channel within the second offset time. The slave device can also choose not to access the second channel during the second offset time when it does not need to interact with the master device. Therefore, the master device can choose whether to interact with the master device by selecting to access the second channel when needed.

In an example, the slave device can interact with the master device in the response mode, and step 503 can be specifically: within the second offset time after receiving the synchronization message, access the second channel and send the interaction message, If the response message of the interaction message is not received, within the second offset time after the next synchronization message is received, the second channel is accessed and the interaction message is resent.

In an example, the slave device may interact with the master device in a non-response mode, and step 503 may specifically include: including: consecutively within the second offset time after receiving the synchronization message, accessing the second channel and send the interaction message; or, within the second offset time after receiving the synchronization message, access the second channel and send the interaction message, if the response message of the interaction message is not received, the next time after receiving the synchronization message During the second offset time, the second channel is accessed and the interactive message is resent. The number of times that the second channel is connected to the second channel to send the interactive message continuously within the second offset time may be a preset fixed value, or may be set by the device according to the current network condition or the importance of the interactive message. numerical value. If the current network condition is good or the importance of the interaction message is not high, a lower value is set, and if the current network condition is poor or the importance of the interaction message is high, a higher value is set. The slave device will send the interaction message a preset number of times. After the preset number of times is sent, the slave device will no longer send the interaction message, ending the interaction with the master device.

It is not difficult to find that this embodiment is a method embodiment corresponding to the first to fourth embodiments, and this embodiment can be implemented in cooperation with the first to fourth embodiments. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not repeated here in order to reduce repetition. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

The steps of the above various methods are divided only for the purpose of describing clearly, and can be combined into one step or split into some steps during implementation, and decomposed into multiple steps, as long as the same logical relationship is included, all are within the protection scope of this patent. ;Adding insignificant modifications to the algorithm or process or introducing insignificant designs, but not changing the core design of the algorithm and process are all within the scope of protection of this patent.

The sixth embodiment of the present application relates to a synchronous communication method. The fifth embodiment is roughly the same as the fourth embodiment, and the main difference is that in the sixth embodiment of the present application, before the slave device sends a resource request to the master device, it is determined that no communication resources have been allocated.

The synchronous communication method of this embodiment, as shown in FIG. 12 , includes:

Step 601-1, determining that the communication resources that have not been allocated to interact with the master device end;

Step 601-2, within the first offset time after receiving the synchronization message broadcast by the master device, send a resource request to the master device through the first channel for receiving the synchronization message;

Step 602, receiving communication resources for interacting with the main device end from the main device end through the first channel, the communication resources including the second offset time relative to the synchronization message broadcast completion;

Step 603, within the second offset time after the broadcast of the synchronization message is completed, access the second channel to interact with the master device.

A slave device uses a communication resource. When the slave device sends a resource request to the master device, it will judge whether the communication resource has been allocated before. If the communication resource has been allocated, it will not send the resource request. communication resources, send a resource request to the master device. When the communication resource is received from the device, the communication resource information will be stored as the basis for judging that the communication resource has been allocated. In this embodiment, before the first channel that receives the synchronization message sends the resource request to the master device, it is determined that the slave device has not been allocated the communication resources for interacting with the master device, so as to avoid re-allocating communication resources to a slave device It ensures that only one communication resource is allocated to a slave device, ensuring the stability of the interaction process.

The seventh embodiment of the present application relates to an electronic device, as shown in FIG. 13 , comprising: at least one processor 701 ; and a memory 702 communicatively connected to the at least one processor 701 ; wherein the memory 702 stores data that can be processed by the at least one processor 701 . The instructions are executed by the processor 701, and the instructions are executed by at least one processor 701, so that the at least one processor 701 can execute the above-mentioned synchronous communication method applied to the master device, or can execute the above-mentioned synchronous communication method applied to the slave device.

The memory 702 and the processor 701 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 701 and various circuits of the memory 702 together. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor.

The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, memory may be used to store data used by the processor in performing operations.

The eighth embodiment of the present application relates to a computer-readable storage medium storing a computer program. The above method embodiments are implemented when the computer program is executed by the processor.

That is, those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make a device ( It may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present application. Scope.

Claims

A synchronous communication method, characterized in that it is applied to a master device, the method comprising:

Within the first offset time after the synchronization message broadcast is completed, receive the resource request sent from the device through the first channel that broadcasts the synchronization message;

In response to the resource request, allocate communication resources for the slave device to interact with the master device; the communication resources include a second offset time;

Send the communication resource to the slave device through the first channel;

The first offset time is within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, and the second offset time is between the two adjacent synchronization messages. The time interval between the completion of the previous synchronization message broadcast and the start of the next synchronization message broadcast in the message.
The synchronous communication method according to claim 1, wherein the communication resource further comprises a second channel.
The synchronous communication method according to claim 2, wherein after the sending the communication resource to the slave device through the first channel, the method further comprises:

During the second offset time after the broadcast of the synchronization message is completed, the second channel is accessed to interact with the slave device.
The synchronous communication method according to claim 3, wherein, within the second offset time after the broadcast of the synchronization message is completed, the second channel is accessed to communicate with the slave device. interactions, including:

Access the second channel within the second offset time after the synchronization message broadcast is completed, and interact with the slave device in response mode or non-reply mode;

Wherein, in the response mode, the master device receives the interactive message sent by the slave device, and responds to the interactive message; in the non-reply mode, the master device only receives the Describe the interactive message sent from the device.
The synchronous communication method according to claim 4, characterized in that, within the second offset time after the broadcast of the synchronization message is completed, the second channel is accessed, and in the response mode or the non-response mode Before interacting with the slave device, it also includes:

According to at least one of the following information, it is determined to use the response mode or the non-response mode to interact with the slave device; the information includes: the network quality of the network environment where the master device is located, the Whether the slave side is designated to use the acknowledgment mode or the non-acknowledgment mode.
The synchronous communication method according to claim 5, wherein the determining to use the response mode or the non-response mode to interact with the slave device according to at least one of the following information includes:

If multiple evaluation indicators of the network environment where the master device is located meet the preset conditions, or if the slave device is designated to use the non-response mode, it is determined to use the non-response mode and the slave device end. Perform interaction; wherein, the multiple evaluation indicators include at least one of signal strength and bit error rate.
The synchronous communication method according to claim 3, wherein, within the second offset time after the broadcast of the synchronization message is completed, the second channel is accessed to communicate with the slave device. After the interaction, it also includes:

If, within the second offset time after the broadcast of the synchronization message is completed, the number of times of failure of interaction through the second channel exceeds a preset number of times, the communication resource allocated to the slave device is recovered.
The synchronous communication method according to claim 1 or 2, wherein the first offset time and the second offset time do not overlap; and/or the second offset time is different from the slave device side. The shift times do not overlap.
The synchronous communication method according to claim 8, wherein the communication resource comprises a second channel; the first offset time and the second offset time do not overlap, and the first offset time earlier than the second offset time; after the sending the communication resource to the slave device through the first channel, further includes: after the Nth synchronization message broadcast is completed to the N+1th synchronization During the first offset time in the time interval between the start of message broadcasting, the resource request sent from the device end is received through the first channel, and after the Nth synchronization message broadcasting is completed, the During the second offset time within the time interval between the start of N+1 synchronization message broadcasts, access the second channel to interact with the slave device; wherein, N is greater than or equal to 1 Integer.
The synchronous communication method according to claim 9, wherein, in the case that the second offset times of different slave devices do not overlap; Within the first offset time within the time interval between the start of one synchronization message broadcast, the resource request sent from the device is received through the first channel, and the resource request is received after the Nth synchronization message broadcast is completed. During the second offset time within the time interval between the start of the N+1th synchronization message broadcast, accessing the second channel to interact with the slave device includes:

Within the first offset time within the time interval between the completion of the Nth synchronization message broadcast and the N+1th synchronization message broadcast start, the slave device is received through the first channel The resource request sent by the slave device, and the second offset time of the different slave devices within the time interval between the completion of the Nth synchronization message broadcast and the start of the N+1th synchronization message broadcast Inside, access the second channel of the different slave devices to interact with the different slave devices.
The synchronous communication method according to claim 1, wherein, in response to the resource request, allocating communication resources for the slave device to interact with the master device includes:

In response to the resource request, if it is determined that a preset resource allocation condition is established, allocate communication resources for the slave device to interact with the master device;

The resource allocation condition includes at least one of the following conditions: the slave device is a preset device that is allowed to interact with the master device, and the number of slave devices that have been allocated communication resources does not reach the preset number upper limit of .
The synchronous communication method according to claim 1, wherein, within the first offset time after the broadcast of the synchronization message is completed, the resource request sent from the device is received through the first channel that broadcasts the synchronization message Before, also included:

It is determined that the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages satisfies a preset duration condition; the duration condition includes: the time interval and the first offset The difference between the time lengths of time is greater than or equal to the preset time length, and the difference between the time interval and the time length of the second offset time is greater than or equal to the preset time length.
The synchronous communication method according to claim 12, wherein the preset duration is greater than or equal to the duration of completely receiving the resource request.
The synchronous communication method according to claim 12, wherein the time length condition further comprises: the time interval is greater than or equal to the time length of the first offset time and the time length of the second offset time and.
The synchronous communication method according to claim 1, wherein the first offset time and the second offset time do not overlap, and the second offset time of the different slave devices does not overlap; the After the sending of the communication resource to the slave device through the first channel, the method further includes:

During the first offset time within the time interval between the completion of the Nth broadcast of the synchronization message and the start of the N+1th synchronization message broadcast, the data sent from the device side is received through the first channel. the resource request, and within the time interval between the completion of the Nth synchronization message broadcast and the start of the N+1th synchronization message broadcast, the second offset time of the slave device side is different, Interact with different slave devices through the first channel.
A synchronous communication method, characterized in that it is applied to a slave device, the method comprising:

Within the first offset time after receiving the synchronization message broadcast by the master device, send a resource request to the master device through the first channel for receiving the synchronization message;

Receive communication resources for interacting with the master device from the master device through the first channel; the communication resources include a second offset time;

The first offset time is within the time interval between the completion of the broadcast of the previous synchronization message and the start of the broadcast of the next synchronization message in two adjacent synchronization messages, and the second offset time is between the two adjacent synchronization messages. The time interval between the completion of the previous synchronization message broadcast and the start of the next synchronization message broadcast in the message.
The synchronous communication method according to claim 16, wherein the communication resource further comprises a second channel.
The synchronous communication method according to claim 17, wherein after receiving the resource for communicating with the master device through the first channel, the method further comprises:

Access the second channel to interact with the master device within a second offset time after receiving the synchronization message broadcast by the master device.
The synchronous communication method according to claim 18, wherein, within a second offset time after receiving the synchronization message broadcast by the master device, accessing the second channel to communicate with the master Interaction on the device side, including:

Access the second channel and send interactive messages within the second offset time after receiving the synchronization message for multiple consecutive times; or, within the second offset time after receiving the synchronization message, receive Enter the second channel and send the interactive message, if the response message of the interactive message is not received, within the second offset time after the next time the synchronization message is received, access the second channel and re-send the interactive message.
The synchronous communication method according to claim 19, wherein, within a first offset time after receiving the synchronization message broadcasted by the master device, send the message to the master device through the first channel on which the synchronization message is received. Before the device sends the resource request, it also includes:

It is determined that communication resources that have not been allocated to interact with the master device end.
The synchronous communication method according to claim 16 or 17, wherein the first offset time and the second offset time do not overlap; and/or the second offset time on the slave device side is different The shift times do not overlap.
An electronic device, comprising:

at least one processor;

and, a memory communicatively coupled to the at least one processor;

wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to execute any one of claims 1 to 15 In the synchronous communication method, the master device end is the electronic device, or, the synchronous communication method according to any one of claims 16 to 21 can be executed, and the slave device end is the electronic device.
A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the synchronous communication method described in any one of claims 1 to 15 is implemented, or, the computer program can be executed as claimed in claims The synchronous communication method described in any one of 16 to 21.