WO2021226974A1

WO2021226974A1 - Data broadcasting method, method and apparatus for receiving broadcast data and terminal device

Info

Publication number: WO2021226974A1
Application number: PCT/CN2020/090389
Authority: WO
Inventors: 张志伟
Original assignee: 深圳市南方硅谷半导体有限公司
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-11-18

Abstract

Disclosed in the present invention are a data broadcasting method, a method and apparatus for receiving broadcast data and a terminal device. The data broadcasting method comprises: acquiring designated data to form data packets; and broadcasting same in turn by means of different designated broadcasting channels, wherein the data packets broadcast by means of each channel carrying different synchronization information respectively, each synchronization information comprises a channel sequence number to be sent next time, and the data packets are received by a receiving end, so that the receiving end switches a current receiving channel to a channel with the same channel sequence number.

Description

Data broadcasting method, method, device and terminal equipment for receiving broadcasting data

Technical field

The present invention relates to the technical field of communication and broadcasting, and in particular to a data broadcasting method, a method, device and terminal equipment for receiving broadcasting data.

Background technique

Nowadays, in the rapidly developing Internet of Things industry, more and more application scenarios require broadcasting technology. In an IoT application scenario, when a device is needed to send data information or control commands to multiple surrounding devices, and the receiving device is required to quickly implement response actions, and the receiving device does not need to reply confirmation information, this time Usually choose the broadcast communication method to achieve.

There are many standard communication protocols in the wireless local area network WLAN, and the frame broadcast (Broadcast) communication method is one of the IEEE802.11 protocol suites. However, this protocol is a relatively unreliable communication protocol with one-way and one-frequency. The traditional broadcasting technology based on IEEE802.11 protocol usually has relatively low reliability and is easily affected by the surrounding environment during wireless broadcasting, and the broadcasting success rate is extremely low. , It is difficult to apply to some short-distance, large data volume and fast communication scenarios.

technical problem

The main purpose of the present invention is to provide a data broadcasting method, a method, a device and a terminal device for receiving broadcast data, and aims to solve the technical problem of low reliability of single-frequency broadcast communication methods in the prior art.

Technical solutions

To achieve the above objective, an embodiment of the present invention provides a data broadcasting method, which includes the following steps:

Obtain specified data;

The designated data is formed into data packets, and the data packets are broadcasted in turn through a plurality of different designated broadcast channels, wherein different designated broadcast channels correspond to different channel numbers, and the designated broadcast channels pass through each designated broadcast channel. The broadcasted data packets respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for the next transmission of the data packet, and the data packet is used to be received by the receiving end. The receiving end is enabled to switch the current receiving channel to a channel with the same sequence number as the channel through the synchronization information of the data packet.

The embodiment of the present invention also proposes a method for receiving broadcast data, including:

Receive a data packet broadcasted by the sending end through a designated broadcast channel, where the current receiving channel is the same as the channel sequence number of the designated broadcast channel, and the data packet is obtained by the sending end after processing the designated data. The designated broadcast channels correspond to different channel sequence numbers, the data packets broadcast through each of the designated broadcast channels carry different synchronization information, and each of the synchronization information includes the designation when the data packet is sent next time. The channel number of the broadcast channel;

Parse the data packet to obtain the designated data and the synchronization information, and start a timer to start timing;

When the timer reaches a preset time, the current receiving channel is switched to a channel with the same channel sequence number in the synchronization information according to the synchronization information.

The embodiment of the present invention also proposes a data broadcasting device, and the device includes:

Get data unit, used to get specified data;

The broadcast data unit is used to form the designated data into a data packet, and broadcast the data packets through a plurality of different designated broadcast channels in turn, wherein different designated broadcast channels correspond to different channel sequence numbers. The data packets broadcast by each of the designated broadcast channels respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for sending the data packet next time, and the data packet is used for Received by the receiving end, so that the receiving end switches the current receiving channel to a channel with the same channel sequence number through the synchronization information of the data packet.

An embodiment of the present invention also provides a device for receiving broadcast data, and the device includes:

The receiving data unit is used to receive a data packet broadcasted by the sending end through a designated broadcast channel, wherein the current receiving channel is the same as the channel sequence number of the designated broadcast channel, and the data packet is processed by the sending end on the designated data It is obtained later that the different designated broadcast channels correspond to different channel sequence numbers, the data packets broadcast through each designated broadcast channel carry different synchronization information, and each of the synchronization information includes the next transmission station. The channel sequence number of the designated broadcast channel when describing the data packet;

A parsing data unit, configured to parse the data packet to obtain the designated data and the synchronization information, and start a timer to start timing;

The channel switching unit is configured to switch the current receiving channel to the channel with the same channel sequence number in the synchronization information according to the synchronization information when the timer reaches a preset time.

An embodiment of the present invention also provides a terminal device, which includes a memory, a processor, and at least one application program stored in the memory and configured to be executed by the processor, and the application program is configured for Perform the aforementioned data broadcasting method, or a method of receiving broadcast data.

Beneficial effect

The present invention provides a data broadcasting method, a method, device and terminal equipment for receiving broadcast data. In the method, data packets are broadcast in turn by switching channels, and the receiving end is correspondingly switched to the corresponding channel to receive the data packets, In this way, the traditional single-frequency transmission is increased to multiple frequency transmissions, and the communication transmission is realized by switching to the same frequency multiple times by the transmitting end and the receiving end, thereby greatly improving the reliability and effectiveness of communication transmission, and avoiding one-time transmission due to a single frequency. A situation in which packet collision and packet loss result in unsuccessful transmission and thus unable to complete broadcast communication.

Description of the drawings

FIG. 1 is a schematic flowchart of a data broadcasting method according to an embodiment of the present invention;

Figure 2 is a schematic flowchart of a method for receiving broadcast data according to an embodiment of the present invention

3 is a schematic block diagram of the structure of a data broadcasting device according to an embodiment of the present invention;

4 is a schematic block diagram of the structure of an apparatus for receiving broadcast data according to an embodiment of the present invention;

5 is a schematic block diagram of the structure of an embodiment of a storage medium of the present invention;

Fig. 6 is a schematic structural block diagram of an embodiment of a computer device of the present invention.

The realization of the objectives, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

The best mode of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The data broadcast method and the method for receiving broadcast data in the embodiments of the present invention can be applied to various electronic devices, including terminal devices (such as mobile phones, tablets, computers, etc.), smart home devices (such as audio equipment, smart TVs, etc.), and robots. Equipment, safety monitoring equipment (such as monitoring devices, etc.), etc. The following takes the application to the terminal device as an example for detailed description.

1, an embodiment of the data broadcasting method of the present invention is proposed. The method includes the following steps:

Step S1: Obtain designated data;

Step S2: Form the designated data into data packets, and broadcast the data packets through a plurality of different designated broadcast channels in turn, wherein different designated broadcast channels correspond to different channel sequence numbers, and the designated broadcast channels correspond to different channel sequence numbers. The data packets broadcast by the designated broadcast channel respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for sending the data packet next time, and the data packet is used by the receiving end Receiving, so that the receiving end switches the current receiving channel to a channel with the same channel sequence number through the synchronization information of the data packet.

In this embodiment, the above-mentioned data broadcasting method can be used in various IoT application scenarios, such as scenarios such as smart light control, multimedia broadcasting, etc., and is specifically implemented by broadcasting technology based on a communication protocol of a wireless local area network.

As mentioned in the above steps S1-S2, in the broadcasting equipment, the transmitting end (TX end) first obtains the designated data. The designated data is the effective data for broadcast communication between the broadcasting equipment and the receiving device. These effective data may include control commands, audio And other data. Then the valid data is formed into a data packet that can be transmitted in the channel, for example, the valid data and synchronization information are packaged together to form the above-mentioned data packet; each time a data packet is formed, the sending end broadcasts the data packet through a designated broadcast channel Out, broadcast and send in this way until each different designated broadcast channel is broadcast once. The above-mentioned round broadcast transmission can be broadcast one by one in the specified order until each designated broadcast channel is broadcast once, or it can be broadcast one by one at random until each The designated broadcast channels are broadcast once. In this embodiment, the above-mentioned designated broadcast channel is a preset broadcast channel, and different broadcast channels correspond to different channel serial numbers. For example, broadcast channels with serial numbers 1 to 13 are 1 channel, 2 channel, 3 channel, 4 channel, and 5 Channel, 6 channel, 7 channel, 8 channel, 9 channel, 10 channel, 11 channel, 12 channel, 13 channel, the above multiple different designated broadcast channels can be 1 channel, 6 channel and 11 channel, different designated broadcast Channels use different frequencies to send data, such as channel 1, channel 6, and channel 11 corresponding to low, medium and high frequencies of 2.412GHz, 2.437GHz, and 2.462GHz, respectively. Each of the above synchronization information includes the channel sequence number of the designated broadcast channel used to send the data packet next time in the round robin transmission. The above data packet is used to be received by the receiving end (RX end) of the receiving device. After broadcasting, the receiving device can receive the data packet through the same receiving channel as the designated broadcasting channel, and then parse the data packet to obtain synchronization information, and then switch the current receiving channel to the designated broadcasting channel that the broadcasting equipment will switch to next based on the synchronization information A consistent channel so that the data packet can be received the next time the broadcast device broadcasts the data packet.

In this way, the data packets are broadcast in turn by switching channels, and the receiving end is correspondingly switched to the corresponding channel to receive the broadcast data packets. The traditional single frequency transmission is increased to multiple frequency transmissions, and the transmitting end and the receiving end correspond multiple times. Switch to the same frequency to achieve communication transmission, thereby greatly improving the reliability of communication transmission, and avoiding unsuccessful transmission and failure to complete broadcast communication due to packet collision caused by a single frequency transmission.

In an embodiment, the above step S2 includes:

Step S21: Pack the designated data and the first synchronization information to form the first data packet, and broadcast the first data packet through the first designated broadcast channel. The synchronization information includes the second channel sequence number of the designated broadcast channel, so that the receiving end switches the current receiving channel to a channel consistent with the channel sequence number after receiving the data packet;

Step S22: Switch the first designated broadcast channel to the second designated broadcast channel within a preset time period, and pack the designated data and the second synchronization information again to form the second designated broadcast channel. Data packet, and broadcast the second said data packet through the second said designated broadcast channel, repeatedly switch said designated broadcast channel and send said data packet until all the designated broadcast channels are traversed.

In this embodiment, data packets are broadcast in turn through multiple different designated broadcast channels, and in the process of broadcast in turn through different designated broadcast channels, the order of each designated broadcast channel can be set or randomly determined, specifically , The above specified data and the first synchronization information are packaged together to form the first data packet, and then broadcast through the first specified broadcast channel. The first synchronization information includes the channel number of the second specified broadcast channel. For example, the channel number of the second designated broadcast channel is "6". After receiving the first data packet, the receiving end parses the data packet, and then obtains the above-mentioned designated data and synchronization information to obtain the channel number of the second designated broadcast channel "6", at the same time calculated by the timer, the current receiving channel will be switched to the channel numbered "6" within the preset time period; at the same time, within the preset time period, the sender will specify the first one The broadcast channel is switched to the second designated broadcast channel, and the above designated data and the second synchronization information are packaged together to form a second data packet. The second synchronization information includes the channel number of the third designated broadcast channel, and then The second data packet is broadcast through the second designated broadcast channel. Since both the sender and the receiver switch to the same channel, the receiver can receive the data packet sent by the second designated broadcast channel. Repeat the above steps in this way until the data packet is broadcast through all the designated broadcast channels. The above preset time period can be set to a smaller time length, so that the time for switching channels is almost zero, making the receiving end equivalent to receiving different channels at the same time. Data packets sent from the channel are sent by switching between different channels to avoid channel interference, and even if the data packets in the individual designated broadcast channels are lost during the sending process so that the receiving end cannot receive them, the data packets can also be received through the other designated broadcast channels Therefore, the communication between the sending end and the receiving end is ensured under the condition of high efficiency, and the reliability of the communication is greatly improved.

For example, multiple different designated broadcast channels are 1 channel, 6 channel, and 11 channels. The order of the designated broadcast channels sent in turn is 1 channel, 6 channel, and 11 channel. The above-mentioned preset time period is 3 ms, that is, every The receiving end switches channels and broadcasts once every 3ms. In the first broadcast, the specified data and the information of the channel number "6" sent for the second time are packaged to obtain a data packet, and broadcast through 1 channel, and in 3ms Switch from channel 1 to channel 6 in order to wait for the next broadcast of data, and the receiving end will continue to monitor. When it detects that the above data packet is received through channel 1, it will parse the data packet to obtain the specified data and the channel number to be switched "6 ”And start counting by a timer, which can be accurate to μs, and switch 1 channel to 6 channels within 3ms, so that the time for the transmitter and receiver to switch channels is as close to synchronization as possible. In the second broadcast, the sender again packs the designated data with the channel number "11" information of the third broadcast to obtain the data packet, and then broadcasts it through 6 channels. The receiving end continues to monitor, and the receiving end passes 6 The channel starts timing after receiving the data packet. At the same time, the receiving end parses the above data packet to obtain the specified data and the channel number "11" to be switched, and switch 6 channels to 11 channels within 3ms; in the third broadcast, at the sending end After switching from channel 6 to channel 11 within 3ms, package the designated data with the channel sequence number "1" information to be sent next time to get the data packet to be broadcast on channel 11, and the receiving end receives the above data packet through channel 11, and parses it to obtain the designated The data and the channel number "1" to be switched. Of course, if the designated data has been broadcast through each of the above designated broadcast channels at this time, the broadcast will not be carried out. When the sender and receiver both switch from channel 11 to channel 1 , The sender can obtain new designated data again, repeat the above steps, and each new designated data will be broadcasted through channel 1, channel 6, and channel 11 in turn.

In another embodiment, the aforementioned synchronization information may also include the sequence numbers of multiple designated broadcast channels and the channel sequence of the alternate broadcast. When the receiving end receives the data packet, the synchronization information is parsed to obtain the designated broadcast channel that will broadcast the data next time. Sequence number, as well as the number and order of the designated broadcast channels of the broadcast in turn, the calculator starts timing. When the receiving end switches the receiving channel to the next receiving channel, if no new data packet is received within the specified time, it will be parsed according to the The above-mentioned turn-by-turn broadcast channel sequence automatically switches the current receiving channel to the next receiving channel, so that the receiving channel of the receiving end corresponds to the designated broadcast channel of the transmitting end, so that new data packets can be received continuously.

Preferably, the interval time set between the sending end and the receiving end may be inconsistent, and the switching time of the receiving end is shorter than the switching time of the sending end. For example, the sending end switches channels in time t, and the receiving end switches channels in time j, then t>j In this way, with the addition of the transmission time, the channel switching time between the receiving end and the sending end tends to be as consistent as possible, so that the receiving end has switched channels before the data packet is transmitted to the receiving end.

Further, the above-mentioned multiple different designated broadcast channels are the channels with the least mutual interference, such as channels with far apart frequencies. Generally speaking, each channel corresponds to a 20MHz bandwidth, and channels with non-overlapping ranges have the least mutual interference. In this way, multiple channels are used. The channel with the least mutual interference is sent to avoid adjacent channel interference when sending data. For example, the above-mentioned designated broadcast channel may be 1 channel, 6 channel, 11 channel, and 13 channel with the least mutual interference.

In one embodiment, among the usable channels specified in the IEEE 802.11 standard protocol, it is assumed that there are N channels used for broadcasting data, and each of the channels has a one-to-one corresponding channel sequence number. Before the above step S2, it includes :

Step S23: Determine whether the data amount of the data packet is greater than a first preset value;

Step S24: if yes, select M designated channels from the N channels as the designated broadcast channels;

Step S25: If not, select K designated channels from the N channels as the designated broadcast channels, where N, M, and K are positive integers, and K>M.

In this embodiment, the number of designated broadcast channels and the channel sequence number can be determined by the size of the data volume of the broadcast data. It is known that there are N channels used to broadcast data, and each channel has a one-to-one corresponding channel sequence number, but not all channels are used to broadcast the above-mentioned data packets in turn. For data of different sizes, different To send on a designated broadcast channel, first determine whether the data volume of the data packet is greater than the first preset value. The first preset value is set by the user. If the data packet is greater than the first preset value, it means that the data volume is larger. Select M designated channels from N channels as designated broadcast channels, for example, select 2 from 1 to 13 channels as designated broadcast channels. If the data packet is not larger than the first preset value, it means that the amount of data is small, then Select K designated channels from N channels as designated broadcast channels, for example, select 3 from 1 to 13 channels as designated broadcast channels, K>M, and further, N channels can all be channels with the least mutual interference For example, 1 channel, 6 channels, 11 channels and 13 channels, and then randomly select from these 4 channels, or for different frequencies, set the priority order from these 4 channels, and then select them in order. Generally, data with a small amount of data, such as switch control and other information data, corresponds to fast transmission speed and high efficiency, and more channels can be selected for broadcast transmission, while data with a larger amount of data, such as audio data, is at least Transmission of 800 bytes, the transmission speed is slower, you can select fewer channels for transmission, so that the overall transmission speed can be balanced and the transmission efficiency can be improved.

In another embodiment, before the above step S1, first obtain the data to be sent, and then determine the number of channels and sequence numbers based on the data to be sent, count the data volume of the data to be sent, and then calculate the data volume according to the size of the data. Determine the number of channels to be used for transmission. Data with a large amount of data may not be completed at one time due to the limitation of channel capacity. It needs to be divided into multiple copies and the amount of data is large, so the transmission efficiency is It is slow, so fewer channels can be selected for broadcasting, and data with a smaller amount of data has faster transmission efficiency, so more channels can be selected for broadcasting.

In one embodiment, before the above step S1, it includes:

Step S01: Obtain the data to be sent to be broadcast;

Step S02: Determine whether the data amount of the data to be sent is greater than a second preset value;

Step S03: If yes, divide the to-be-sent data to obtain more than one piece of the designated data, and the maximum data amount of each piece of the designated data does not exceed the second preset value;

Step S04: If not, the data to be sent is defaulted to the designated data.

In this embodiment, the capacity of each transmission is a fixed value, and when the data volume after the combination of the specified data and the synchronization information is greater than the fixed value, it needs to be divided into multiple parts for broadcasting, and the data volume of the synchronization information can also be set. Set it to another fixed value, then you can determine whether to divide the data into multiple parts and send it by the size of the data that needs to be broadcast. For example, the above fixed value is 2320bytes, and the private agreement 20bytes can be used for synchronization information, and the remaining 2300bytes is that It is the valid data that needs to be sent, that is, the above-mentioned second preset value. Specifically, first obtain the data to be sent to be broadcast, and then determine whether the data volume of the data to be sent is greater than the second preset value. The amount of data is large. At this time, the data to be sent can be divided to obtain more than one set of designated data, and the maximum data amount of each designated data does not exceed the second preset value. The data defaults to the specified data. For example, the amount of data to be sent is 8000bytes, and the judgment is greater than 2300bytes. At this time, the data to be sent can be divided into 4 parts in byte order, and the data volume of each part is 2300 bytes, 2300bytes, and 2300 bytes respectively. And 1100 bytes, and each copy corresponds to a data serial number, and then send it according to the above steps S1-S2 one by one. There is no limit to the data volume of each data here, as long as it does not exceed the second preset value mentioned above. In order to improve the speed, You can refer to the above example. The amount of data for each split is the second preset value until the split is completed, so that the number of splits is as small as possible, and relatively, the number of transmissions will be reduced, so that even if the amount of data far exceeds the transmission capacity of the data , You can also quickly send it in portions by following the above steps.

In an embodiment, the above step S2 includes:

Step S26: Obtain the synchronization information;

Step S27: Add the synchronization information to the frame body in the communication protocol of the designated data, and pack it to form the data packet.

In this embodiment, the synchronization information is carried by a custom private protocol. Specifically, the process of forming the specified data into the data packet includes: first obtaining synchronization information, and the synchronization information includes the information of the channel to be switched next time. Then add the above synchronization information to the communication protocol of the specified data. The above method can be implemented based on the frame broadcast (Broadcast) communication method in the IEEE802.11 protocol suite, that is, by broadcasting frame data. The frame structure includes a frame body (Framebody), and the above-mentioned synchronization information can be added to the VendorSpecific of the frame body, and then packaged to form the above-mentioned data packet.

Referring to FIG. 2, an embodiment of a method for receiving broadcast data of the present invention is proposed, and the method includes:

Step S1': Receive a data packet broadcasted by the sender through a designated broadcast channel, where the current receiving channel is the same as the channel sequence number of the designated broadcast channel, and the data packet is obtained by the sender after processing the designated data , The different designated broadcast channels correspond to different channel sequence numbers, the data packets broadcast through each of the designated broadcast channels carry different synchronization information, and each of the synchronization information respectively includes the next transmission of the data The channel sequence number of the designated broadcast channel during the packet;

Step S2': Parse the data packet to obtain the designated data and the synchronization information, and start a timer to start timing;

Step S3': When the timer reaches the preset time, switch the current receiving channel to the channel with the same channel sequence number in the synchronization information according to the synchronization information.

In this embodiment, the above method for receiving broadcast data is applied to a receiving device, where the receiving device is a device that can be connected to the broadcasting device in communication, the receiving device is in a state to receive data, and the current receiving channel is the same as the specified broadcast of the broadcasting device. The channel is the same. The receiving end of the receiving device receives the data packet through the receiving channel. The data packet is obtained by the sending end after processing the designated data, and broadcasted through the designated broadcast channel. The above designated data is data such as control instructions or audio and video. The designated broadcast channel corresponds to different channel sequence numbers. The data packets broadcast through each designated broadcast channel carry different synchronization information, and each synchronization information includes the channel number of the designated broadcast channel when the data packet is sent next time. For the specific packaging and broadcasting process, refer to the above-mentioned data broadcasting method, which will not be repeated here. Analyze the above data packets to obtain synchronization information and designated data. Through the synchronization information, we can know the channel number of the designated broadcast channel used to send the data packet next time, that is, know which designated broadcast channel will be sent next time, and start the timer to start timing. , When the timer reaches the preset time, the preset time can be consistent with the time when the broadcasting device switches the designated broadcast channel, and then the receiving end switches the current receiving channel to the next receiving channel, and the next receiving channel is synchronized with the above-obtained synchronization information The channel sequence number in is the same, that is, it is switched to the same receiving channel as the designated broadcast channel for sending the data packet next time. Further, the receiving device may have multiple, that is, multiple receiving devices can simultaneously receive the broadcast broadcast from the broadcast device. Packets.

In an embodiment, after the above step S2, the method includes:

Step S4': Select one of the data packets from the data packets with the same data sequence number as the data packet for communication with the sending end.

In this embodiment, the above synchronization information includes the data sequence number. The above data to be sent may be broadcast in one rotation period, or it may be broadcast in multiple rotation periods. When one rotation period, it can be broadcast and sent. When it is finished, that is, the data to be sent is a piece of designated data. After receiving the data packets sent by each designated broadcast channel in turn, the receiving end parses out the designated data every time, and the data sequence number of each designated data is the same. At this time, you only need to select one of the data packets as the data packet for the sending end communication. When the data to be sent can be divided into multiple specified data, the data sent in each cycle corresponds to a different data sequence number, and the above corresponding data packets are analyzed. The designated data of a data serial number, and randomly obtain a copy from the designated data corresponding to the same data serial number, and then splice the selected designated data according to the data serial number to obtain the above-mentioned data to be sent, that is, the data that the receiving end needs to use .

3, an embodiment of the data broadcasting device of the present invention is proposed. The device is used to execute the above-mentioned data transmission method, and the data transmission device can be implemented in the form of software or hardware. The device includes:

The acquiring data unit 100 is used to acquire designated data;

The broadcast data unit 200 is used to form the designated data into data packets, and broadcast the data packets through a plurality of different designated broadcast channels in turn, wherein different designated broadcast channels correspond to different channel sequence numbers, The data packets broadcast through each of the designated broadcast channels respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for transmitting the data packet next time, and the data packet is used for At the receiving end, so that the receiving end switches the current receiving channel to the channel with the same channel sequence number through the synchronization information of the data packet.

In this embodiment, the above-mentioned data broadcasting device can be used in various IoT application scenarios, such as scenarios such as smart light control, multimedia broadcasting, etc., which are specifically implemented by broadcasting technology based on the communication protocol of the wireless local area network.

As described above for the data acquisition unit 100 and the broadcast data unit 200, in the broadcast device, the transmitting end (TX end) first acquires designated data. The designated data is valid data for broadcast communication between the broadcast device and the receiving device. These valid data can be Including control commands, audio and other data. Then the valid data is formed into a data packet that can be transmitted in the channel, for example, the valid data and synchronization information are packaged together to form the above-mentioned data packet; each time a data packet is formed, the sending end broadcasts the data packet through a designated broadcast channel Out, broadcast and send in this way until each different designated broadcast channel is broadcast once. The above-mentioned round broadcast transmission can be broadcast one by one in the specified order until each designated broadcast channel is broadcast once, or it can be broadcast one by one at random until each The designated broadcast channels are broadcast once. In this embodiment, the above-mentioned designated broadcast channel is a pre-designated broadcast channel, and different broadcast channels correspond to different channel serial numbers. For example, broadcast channels with serial numbers 1 to 13 are 1 channel, 2 channel, 3 channel, 4 channel, and 5 channel respectively. , 6 channels, 7 channels, 8 channels, 9 channels, 10 channels, 11 channels, 12 channels, 13 channels, the above multiple different designated broadcast channels can be 1, 6 and 11 channels, different designated broadcast channels Use different frequencies to send data, such as channel 1, channel 6, and channel 11 corresponding to low, medium and high frequencies 2.412GHz, 2.437GHz, 2.462GHz, respectively. Each of the above synchronization information includes the channel sequence number of the designated broadcast channel used to send the data packet next time in the round robin transmission. The above data packet is used to be received by the receiving end (RX end) of the receiving device. After broadcasting, the receiving device can receive the data packet through the same receiving channel as the designated broadcasting channel, and then parse the data packet to obtain synchronization information, and then switch the current receiving channel to the designated broadcasting channel that the broadcasting equipment will switch to next based on the synchronization information A consistent channel so that the data packet can be received the next time the broadcast device broadcasts the data packet.

In an embodiment, the above-mentioned broadcast data unit 200 includes:

The first broadcast subunit is configured to pack the designated data and the first said synchronization information together to form the first said data packet, and broadcast the first said data packet through the first said designated broadcast channel Out, the first synchronization information includes the second channel sequence number of the designated broadcast channel, so that the receiving end switches the current receiving channel to the channel sequence number after receiving the data packet Consistent channel

The second broadcast subunit is configured to switch the first designated broadcast channel to the second designated broadcast channel within a preset time period, and pack the designated data and the second synchronization information together again Form the second said data packet, and broadcast the second said data packet through the second said designated broadcast channel, repeatedly switch the designated broadcast channel and send the said data packet until all the designated ones are traversed Broadcast channel.

For example, multiple different designated broadcast channels are 1 channel, 6 channel, and 11 channels. The order of the designated broadcast channels sent in turn is 1 channel, 6 channel, and 11 channel. The above-mentioned preset time period is 3 ms, that is, every The receiving end switches channels and broadcasts once every 3ms. In the first broadcast, the specified data and the information of the channel number "6" sent for the second time are packaged to obtain a data packet, and broadcast through 1 channel, and in 3ms Switch from channel 1 to channel 6 in order to wait for the next broadcast of data, and the receiving end will continue to monitor. When it detects that the above data packet is received through channel 1, it will parse the data packet to obtain the specified data and the channel number to be switched "6 ”And start counting by a timer, which can be accurate to μs, and switch 1 channel to 6 channels within 3ms, so that the time for the transmitter and receiver to switch channels is as close to synchronization as possible. In the second broadcast, the sender again packs the designated data with the channel number "11" information of the third broadcast to obtain the data packet, and then broadcasts it through 6 channels. The receiving end continues to monitor, and the receiving end passes 6 The channel starts timing after receiving the data packet. At the same time, the receiving end parses the above data packet to obtain the specified data and the channel number "11" to be switched, and switch 6 channels to 11 channels within 3ms; in the third broadcast, at the sending end After switching from channel 6 to channel 11 within 3ms, package the designated data with the channel sequence number "1" information to be sent next time to get the data packet to be broadcast on channel 11, and the receiving end receives the above data packet through channel 11, and parses it to obtain the designated The data and the channel sequence number "1" to be switched. Of course, if the designated data has been broadcast by traversing each of the above designated broadcast channels at this time, the broadcast will not be carried out. When the sender and receiver both switch from channel 11 to channel 1 After that, the sender can obtain new designated data again, repeat the above steps, and each new designated data will be broadcasted through channel 1, channel 6, and channel 11 in turn.

In one embodiment, among the usable channels specified in the IEEE 802.11 standard protocol, it is assumed that there are N channels used for broadcasting data, and each of the channels has a one-to-one corresponding channel sequence number. The above-mentioned data broadcasting device includes :

The judging data unit is used to judge whether the data amount of the data packet is greater than a first preset value;

The first selecting unit is configured to determine that the data amount of the data packet is greater than a first preset value, select M designated channels from the N channels as the designated broadcast channels;

The second selection unit is used to determine that the data volume of the data packet is not greater than the first preset value, select K designated channels from the N channels as the designated broadcast channels, N, M , K is a positive integer, and K>M.

In this embodiment, the number of designated broadcast channels and the channel sequence number can be determined by the size of the data volume of the broadcast data. It is known that there are N channels used to broadcast data, and each channel has a one-to-one corresponding channel sequence number, but not all channels are used to broadcast the above-mentioned data packets in turn. For data of different sizes, different To send on a designated broadcast channel, first determine whether the data volume of the data packet is greater than the first preset value. The first preset value is set by the user. If the data packet is greater than the first preset value, it means that the data volume is larger. Select M designated channels from N channels as designated broadcast channels, for example, select 2 from 1 to 13 channels as designated broadcast channels. If the data packet is not larger than the first preset value, it means that the amount of data is small, then Select K designated channels from N channels as designated broadcast channels, for example, select 3 from 1 to 13 channels as designated broadcast channels, K>M, and further, N channels can all be channels with the least mutual interference For example, 1 channel, 6 channels, 11 channels and 13 channels, and then randomly select from these 4 channels, or for different frequencies, set the priority order from these 4 channels, and then select them in order. Generally, data with a small amount of data, such as switch control and other information data, corresponds to a fast transmission speed and high efficiency. You can select more channels for broadcast transmission, while data with a larger amount of data, such as audio data, is at least per second. Transmission of 800 bytes, the transmission speed is slower, you can select fewer channels for transmission, so that the overall transmission speed can be balanced and the transmission efficiency can be improved.

In another embodiment, before the above step S1, first obtain the data to be sent, and then determine the number of channels and the sequence number according to the data to be sent, firstly count the data volume of the data to be sent, and then according to the size of the data volume To determine the number of channels used for transmission, and data with a large amount of data, due to the limitation of channel capacity, may not be completed at one time in turn, and needs to be divided into multiple copies. The efficiency is slow, so fewer channels can be selected for broadcasting, and data with a smaller amount of data has faster transmission efficiency, so more channels can be selected for broadcasting.

In one embodiment, the above-mentioned data broadcasting device includes:

Obtain the pending unit, which is used to obtain the pending data to be broadcast;

A judging quantity unit for judging whether the data amount of the data to be sent is greater than a second preset value;

The data segmentation unit is used to determine that the data volume of the data to be sent is greater than a second preset value, and divide the data to be sent to obtain more than one copy of the designated data, and the data volume of each designated data is the largest The value does not exceed the second preset value;

The default data unit is used to determine that the data volume of the data to be sent is not greater than a second preset value, and to default the data to be sent as the designated data.

In this embodiment, the capacity of each transmission is a fixed value, and when the data volume after the combination of the specified data and the synchronization information is greater than the fixed value, it needs to be divided into multiple parts for broadcasting, and the data volume of the synchronization information can also be set. Set it to another fixed value, then you can determine whether to divide the data into multiple parts and send it by the size of the data that needs to be broadcast. For example, the above fixed value is 2320bytes, and the private agreement 20bytes can be used for synchronization information, and the remaining 2300bytes is that It is the valid data that needs to be sent, that is, the above-mentioned second preset value. Specifically, first obtain the data to be sent to be broadcast, and then determine whether the data volume of the data to be sent is greater than the second preset value. The amount of data is large. At this time, the data to be sent can be divided to obtain more than one set of designated data, and the maximum data amount of each designated data does not exceed the second preset value. The data defaults to the specified data. For example, the amount of data to be sent is 8000bytes, and the judgment is greater than 2300bytes. At this time, the data to be sent can be divided into 4 parts in byte order, and the data volume of each part is 2300 bytes, 2300bytes, and 2300 bytes respectively. And 1100 bytes, and each copy corresponds to a data serial number, and then send it in accordance with the above steps one by one. There is no limit to the data volume of each data here, as long as it does not exceed the second preset value mentioned above. In order to improve the speed, you can refer to the above For example, the amount of data for each split is the second preset value until the split is completed, so that the number of splits is as small as possible. Relatively, the number of transmissions will also be reduced, so that even if the amount of data far exceeds the transmission capacity of data, it can be Quickly send in portions by following the above steps.

In an embodiment, the above-mentioned broadcast data unit 200 includes:

The obtaining information subunit is used to obtain the synchronization information;

The packed data subunit is used to add the synchronization information to the frame body in the communication protocol of the specified data, and pack it to form the data packet.

Referring to FIG. 4, an embodiment of the apparatus for receiving broadcast data of the present invention is proposed. The apparatus is used to execute the above method for receiving broadcast data. The apparatus for receiving broadcast data may be implemented in the form of software or hardware. The device includes:

The receiving data unit 10 is configured to receive a data packet broadcasted by a sending end through a designated broadcast channel, wherein the current receiving channel is the same as the channel sequence number of the designated broadcast channel, and the data packet is assigned to the designated data by the sending end. After processing, it is obtained that different designated broadcast channels correspond to different channel sequence numbers, the data packets broadcast through each designated broadcast channel carry different synchronization information, and each of the synchronization information includes the next transmission The channel sequence number of the designated broadcast channel in the data packet;

The data parsing unit 20 is configured to parse the data packet to obtain the designated data and the synchronization information, and start a timer to start timing;

The channel switching unit 30 is configured to switch the current receiving channel to a channel with the same channel sequence number in the synchronization information according to the synchronization information when the timer reaches a preset time.

In this embodiment, the above method for receiving broadcast data is applied to a receiving device, where the receiving device is a device that can be connected to the broadcasting device in communication, the receiving device is in a state to receive data, and the current receiving channel is the same as the specified broadcast of the broadcasting device. The channel is the same. The receiving end of the receiving device receives the data packet through the receiving channel. The data packet is obtained by the sending end after processing the designated data, and broadcasted through the designated broadcast channel. The above designated data is data such as control instructions or audio and video. The designated broadcast channel corresponds to different channel sequence numbers. The data packets broadcast through each designated broadcast channel carry different synchronization information, and each synchronization information includes the channel number of the designated broadcast channel when the data packet is sent next time. For the specific packaging and broadcasting process, refer to the above-mentioned data broadcasting method, which will not be repeated here. Analyze the data packet to obtain synchronization information and designated data. Through the synchronization information, we can know the channel number of the designated broadcast channel used to send the data packet next time, that is, know which designated broadcast channel will be sent next time, and start a timer to start timing. , When the timer reaches the preset time, the preset time can be consistent with the time when the broadcasting device switches the designated broadcast channel, and then the receiving end switches the current receiving channel to the next receiving channel, and the next receiving channel is synchronized with the above-obtained synchronization information The channel sequence number in is the same, that is, it is switched to the same receiving channel as the designated broadcast channel for sending the data packet next time. Further, the receiving device may have multiple, that is, multiple receiving devices can simultaneously receive the broadcast broadcast from the broadcast device. Packets.

In an embodiment, the foregoing apparatus for receiving broadcast data further includes:

The data selection unit is used to select one of the data packets from the data packets with the same data sequence numbers as the data packet for communication with the sending end.

The present invention also proposes a terminal device, which includes a memory, a processor, and at least one application program stored in the memory and configured to be executed by the processor, the application program being configured to execute a data broadcasting method, or The method of receiving broadcast data. The data broadcasting method includes the following steps: acquiring designated data; forming the designated data into data packets, and broadcasting the data packets through a plurality of different designated broadcast channels in turn, wherein the different designated broadcast channels Corresponding to different channel sequence numbers, the data packets broadcast through each of the designated broadcast channels respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for sending the data packet next time The data packet is used to be received by the receiving end, so that the receiving end switches the current receiving channel to the channel with the same channel sequence number through the synchronization information of the data packet.

The data broadcasting method or the method for receiving broadcast data described in this embodiment is the data broadcasting method or the method for receiving broadcast data involved in the foregoing embodiment of the present invention, and will not be repeated here.

Referring to FIG. 5, the present application also provides a computer-readable storage medium 21. The storage medium 21 stores a computer program 22. When it runs on a computer, the computer executes the data broadcasting method described in the above embodiment and The above method of receiving broadcast data.

6, the present application also provides a computer device 34 containing instructions. The computer device includes a memory 31 and a processor 33. The memory 31 stores a computer program 22. When the processor 33 executes the computer program 22, the description in the above embodiment is implemented. The data broadcasting method and the above-mentioned method of receiving broadcasting data.

Those skilled in the art can understand that the present invention includes devices related to performing one or more of the operations described in the present invention. These devices may be specially designed and manufactured for the required purpose, or may also include known devices in general-purpose computers. These devices have computer programs stored in them, which are selectively activated or reconfigured. Such a computer program may be stored in a device (for example, computer) readable medium or in any type of medium suitable for storing electronic instructions and respectively coupled to a bus. The computer readable medium includes but is not limited to any Types of disks (including floppy disks, hard disks, CD-ROMs, CD-ROMs, and magneto-optical disks), ROM (Read-Only Memory), RAM (Random Access) Memory, random access memory), EPROM (Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or optical card. That is, the readable medium includes any medium that stores or transmits information in a readable form by a device (for example, a computer).

The preferred embodiments of the present invention are described above with reference to the accompanying drawings, and the scope of rights of the present invention is not limited thereby. Those skilled in the art can implement the present invention in many variations without departing from the scope and essence of the present invention. For example, the features of one embodiment can be used in another embodiment to obtain another embodiment. Any modification, equivalent replacement and improvement made within the technical concept of using the present invention shall fall within the scope of the rights of the present invention.

Claims

A data broadcasting method, characterized in that it comprises:

Obtain specified data;

The designated data is formed into data packets, and the data packets are broadcasted in turn through a plurality of different designated broadcast channels, wherein different designated broadcast channels correspond to different channel numbers, and the designated broadcast channels pass through each designated broadcast channel. The broadcasted data packets respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for the next transmission of the data packet, and the data packet is used to be received by the receiving end. The receiving end is enabled to switch the current receiving channel to a channel with the same sequence number as the channel through the synchronization information of the data packet.
3. The data broadcasting method according to claim 1, wherein the step of forming the designated data into data packets, and broadcasting the data packets through a plurality of different designated broadcast channels in turn, comprises:

Pack the designated data and the first synchronization information to form the first data packet, broadcast the first data packet through the first designated broadcast channel, and the first synchronization information Includes the second channel sequence number of the designated broadcast channel, so that the receiving end switches the current receiving channel to a channel consistent with the channel sequence number after receiving the data packet;

Switch the first designated broadcast channel to the second designated broadcast channel within a preset time period, and pack the designated data and the second synchronization information again to form the second data packet, And broadcast the second said data packet through the second said designated broadcast channel, repeatedly switch said designated broadcast channel and send said data packet until all said designated broadcast channels are traversed.
The data broadcasting method of claim 1, wherein there are N channels used for broadcasting data, and each of the channels has a one-to-one corresponding channel sequence number, and the data packets are passed through a plurality of channels respectively. Before the steps to broadcast different designated broadcast channels in turn, include:

Judging whether the data amount of the data packet is greater than a first preset value;

If yes, select M designated channels from the N channels as the designated broadcast channels;

If not, select K designated channels from the N channels as the designated broadcast channels, where N, M, and K are positive integers, and K>M.
3. The data broadcasting method according to claim 1, wherein before the step of obtaining designated data, the method comprises:

Obtain the data to be sent to be broadcast;

Judging whether the data amount of the data to be sent is greater than a second preset value;

If so, dividing the to-be-sent data to obtain more than one piece of the designated data, and the maximum data amount of each piece of the designated data does not exceed the second preset value;

If not, the data to be sent is defaulted to the designated data.
The data broadcasting method according to claim 1, wherein the multiple different designated broadcasting channels are channels with the least mutual interference.
A method for receiving broadcast data, characterized in that it comprises:

Receive a data packet broadcasted by the sending end through a designated broadcast channel, where the current receiving channel is the same as the channel sequence number of the designated broadcast channel, and the data packet is obtained by the sending end after processing the designated data. The designated broadcast channels correspond to different channel sequence numbers, the data packets broadcast through each of the designated broadcast channels carry different synchronization information, and each of the synchronization information includes the designation when the data packet is sent next time. The channel number of the broadcast channel;

Parse the data packet to obtain the designated data and the synchronization information, and start a timer to start timing;

When the timer reaches a preset time, the current receiving channel is switched to a channel with the same channel sequence number in the synchronization information according to the synchronization information.
The method for receiving broadcast data according to claim 6, wherein the synchronization information includes the data sequence number of the designated data, and the current receiving channel is switched to the channel in the synchronization information according to the synchronization information. After the steps for channels with the same sequence number, include:

From the data packets with the same data sequence numbers, one of the data packets is selected as the data packet for communication with the sending end.
A data broadcasting device, characterized in that it comprises:

Get data unit, used to get specified data;

The broadcast data unit is used to form the designated data into a data packet, and broadcast the data packets through a plurality of different designated broadcast channels in turn, wherein different designated broadcast channels correspond to different channel sequence numbers. The data packets broadcast by each of the designated broadcast channels respectively carry different synchronization information, and each of the synchronization information respectively includes the channel sequence number of the designated broadcast channel for sending the data packet next time, and the data packet is used for Received by the receiving end, so that the receiving end switches the current receiving channel to a channel with the same channel sequence number through the synchronization information of the data packet.
The data broadcasting device according to claim 8, wherein the broadcasting data unit comprises:

The first broadcast subunit is configured to pack the designated data and the first said synchronization information together to form the first said data packet, and broadcast the first said data packet through the first said designated broadcast channel Out, the first synchronization information includes the second channel sequence number of the designated broadcast channel, so that the receiving end switches the current receiving channel to the channel sequence number after receiving the data packet Consistent channel

The second broadcast subunit is configured to switch the first designated broadcast channel to the second designated broadcast channel within a preset time period, and pack the designated data and the second synchronization information together again Form the second said data packet, and broadcast the second said data packet through the second said designated broadcast channel, repeatedly switch the designated broadcast channel and send the said data packet until all the designated ones are traversed Broadcast channel.
8. The data broadcasting device according to claim 8, wherein there are N channels used for broadcasting data, and each of the channels has a one-to-one corresponding channel sequence number, and the data broadcasting device comprises:

The judging data unit is used to judge whether the data amount of the data packet is greater than a first preset value;

The first selecting unit is configured to determine that the data amount of the data packet is greater than a first preset value, select M designated channels from the N channels as the designated broadcast channels;

The second selection unit is used to determine that the data volume of the data packet is not greater than the first preset value, select K designated channels from the N channels as the designated broadcast channels, N, M , K is a positive integer, and K>M.
The data broadcasting device according to claim 8, wherein the data broadcasting device comprises:

Obtain the pending unit, which is used to obtain the pending data to be broadcast;

A judging quantity unit for judging whether the data amount of the data to be sent is greater than a second preset value;

The data segmentation unit is used to determine that the data volume of the data to be sent is greater than a second preset value, and divide the data to be sent to obtain more than one copy of the designated data, and the data volume of each designated data is the largest The value does not exceed the second preset value;

The default data unit is used to determine that the data volume of the data to be sent is not greater than a second preset value, and to default the data to be sent as the designated data.
8. The data broadcasting device according to claim 8, wherein the plurality of different designated broadcasting channels are channels with the least mutual interference.
A device for receiving broadcast data, characterized in that it comprises:

The receiving data unit is used to receive a data packet broadcasted by the sending end through a designated broadcast channel, wherein the current receiving channel is the same as the channel sequence number of the designated broadcast channel, and the data packet is processed by the sending end on the designated data It is obtained later that the different designated broadcast channels correspond to different channel sequence numbers, the data packets broadcast through each designated broadcast channel carry different synchronization information, and each of the synchronization information includes the next transmission station. The channel sequence number of the designated broadcast channel when describing the data packet;

A parsing data unit, configured to parse the data packet to obtain the designated data and the synchronization information, and start a timer to start timing;

The channel switching unit is configured to switch the current receiving channel to the channel with the same channel sequence number in the synchronization information according to the synchronization information when the timer reaches a preset time.
The apparatus for receiving broadcast data according to claim 13, further comprising:

The data selection unit is used to select one of the data packets from the data packets with the same data sequence numbers as the data packet for communication with the sending end.
A terminal device, characterized by comprising a memory, a processor, and at least one application program stored in the memory and configured to be executed by the processor, the application program being configured to execute The data broadcasting method according to any one of claims 1-5, or the method for receiving broadcast data according to any one of claims 6-7.