CN110831010A - Multichannel data sending and receiving method and device and data transmission system - Google Patents
Multichannel data sending and receiving method and device and data transmission system Download PDFInfo
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- CN110831010A CN110831010A CN201911001525.6A CN201911001525A CN110831010A CN 110831010 A CN110831010 A CN 110831010A CN 201911001525 A CN201911001525 A CN 201911001525A CN 110831010 A CN110831010 A CN 110831010A
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- 238000012795 verification Methods 0.000 claims description 18
- 238000004364 calculation method Methods 0.000 claims description 16
- 230000009286 beneficial effect Effects 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
- H04W12/106—Packet or message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
Abstract
The invention relates to a method and a device for sending and receiving multichannel data and a data transmission system, wherein the method for sending the multichannel data comprises the following steps: finishing handshake authentication with a receiving end; when the data to be transmitted accords with a preset data format, distributing a corresponding channel for the data to be transmitted; and sending the data to be transmitted to the receiving end through the distributed channels. According to the invention, each piece of data to be transmitted is sent through the corresponding distributed channel, so that multi-channel parallel transmission can be realized, the transmission processes are not interfered with each other, congestion can be avoided when more data are transmitted, the transmission speed is greatly increased, and the requirement of the whole Internet of things system on the transmission efficiency is met.
Description
Technical Field
The invention relates to the field of data transmission, in particular to a multichannel data sending and receiving method and device and a data transmission system.
Background
When the current short-distance wireless transmission device transmits data, the data is transmitted only through one channel, the data needing to be transmitted is easy to jam when more, the transmission speed is relatively low, high-speed transmission cannot be carried out, and the requirement of the whole Internet of things system on the transmission efficiency cannot be met.
Disclosure of Invention
In view of the above technical problems, the present invention provides a method and an apparatus for transmitting and receiving multi-channel data, and a data transmission system.
The technical scheme for solving the technical problems is as follows: a multi-channel data transmission method, comprising:
finishing handshake authentication with a receiving end;
when the data to be transmitted accords with a preset data format, distributing a corresponding channel for the data to be transmitted;
and sending the data to be transmitted to the receiving end through the distributed channels.
The invention has the beneficial effects that: by sending each piece of data to be transmitted through the corresponding distributed channels, multichannel parallel transmission can be realized, the transmission process is not interfered with each other, congestion can be avoided when more data are transmitted, the transmission speed is greatly increased, and the requirement of the whole Internet of things system on the transmission efficiency is met.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the method further comprises:
when the data to be transmitted does not conform to a preset data format, converting the data to be transmitted into the preset data format and cutting the data to be transmitted into m sections, wherein m is a positive integer;
allocating a corresponding channel for each section of data;
and sending each piece of data to the receiving end through the distributed channel.
Further, allocating a corresponding channel to each piece of data to be transmitted specifically includes:
taking the remainder of n for each piece of data to be transmitted, and distributing channels with channel numbers identical to the last digit of the remainder corresponding to the piece of data to be transmitted for each piece of data to be transmitted, wherein n is the number of the channels;
the allocating a corresponding channel to each segment of data specifically includes:
and taking the remainder of n for each segment of data, and allocating a channel with the channel number same as the last digit of the remainder corresponding to the segment of data to each segment of data.
Further, the method further comprises:
when the data to be transmitted accords with a preset data format, carrying out hash operation on each piece of data to be transmitted, and sending the hash value obtained by calculation to the receiving end as the check information of the piece of data;
when the data to be transmitted does not conform to the preset data format, performing hash operation on each section of data obtained by cutting, and sending the hash value obtained by calculation to the receiving end as the verification information of the section of data;
receiving confirmation information returned by the receiving end according to the received data and the corresponding verification information;
if the confirmation information confirms that the data received by the receiving end is correct, deleting the data, otherwise, retransmitting the data.
The beneficial effect of adopting the further scheme is that the correct integrity of the transmitted data can be ensured through checking.
In order to achieve the above object, the present invention further provides a method for receiving multichannel data, including:
finishing handshake authentication with a sending end;
and receiving the data sent by the sending end, wherein a channel for receiving the data corresponds to a channel for sending the data by the sending end.
The invention has the beneficial effects that: the data are received through the channel corresponding to the channel for sending the data by the sending end, multi-channel parallel transmission can be achieved, the transmission process is not interfered with each other, congestion can be avoided when more data are transmitted, the transmission speed is greatly improved, and the requirement of the whole Internet of things system on the transmission efficiency is met.
Further, the method further comprises:
receiving verification information of the data sent by the sending end, wherein the verification information comprises a hash value obtained by the sending end performing hash operation on each piece of data to be transmitted;
performing hash operation on the received data, comparing the hash value obtained by calculation with the hash value contained in the check information, if the hash value is consistent with the hash value contained in the check information, generating confirmation information for confirming that the received data is correct, and if the hash value is not consistent with the hash value contained in the check information, generating confirmation information for confirming that the received data is wrong;
and sending the confirmation information to the sending end.
The beneficial effect of adopting the above further scheme is that the correct integrity of the received data can be ensured through verification.
The present invention also provides a multichannel data transmitting apparatus, including:
the first handshake authentication device is used for finishing handshake authentication with the receiving end;
the first channel distribution device is used for distributing corresponding channels to the data to be transmitted when the data to be transmitted conforms to a preset data format;
and the first data sending device is used for sending the data to be transmitted to the receiving end through the distributed channels.
Further, the apparatus further comprises:
the data cutting device is used for converting the data to be transmitted into a preset data format and cutting the data to be transmitted into m sections when the data to be transmitted does not conform to the preset data format, wherein m is a positive integer;
the second channel distribution device is used for distributing a corresponding channel for each section of data;
and the second data sending device is used for sending each piece of data to the receiving end through the distributed channel.
Further, the first channel distribution device is specifically configured to:
taking the remainder of n for each piece of data to be transmitted, and distributing channels with channel numbers identical to the last digit of the remainder corresponding to the piece of data to be transmitted for each piece of data to be transmitted, wherein n is the number of the channels;
the second channel allocation device is specifically configured to:
and taking the remainder of n for each segment of data, and allocating a channel with the channel number same as the last digit of the remainder corresponding to the segment of data to each segment of data.
Further, the apparatus further comprises:
the first data verification device is used for performing hash operation on each piece of data to be transmitted when the data to be transmitted conforms to a preset data format, and sending a hash value obtained by calculation to the receiving end as verification information of the piece of data;
the second data checking device is used for carrying out Hash operation on each section of data obtained by cutting when the data to be transmitted does not conform to the preset data format, and sending the Hash value obtained by calculation to the receiving end as the checking information of the section of data;
the data confirmation device is used for receiving confirmation information returned by the receiving end according to the received data and the corresponding verification information;
and the deleting and retransmitting device is used for deleting the data if the confirmation information confirms that the data received by the receiving end is correct, and retransmitting the data if the confirmation information does not confirm that the data is correct.
The present invention also provides a multichannel data receiving apparatus, including:
the second handshake authentication device is used for finishing handshake authentication with the sending end;
and the data receiving device is used for receiving the data sent by the sending end, wherein a channel for receiving the data corresponds to a channel for sending the data by the sending end.
Further, the apparatus further comprises:
the information receiving device is used for receiving the check information of the data sent by the sending end, and the check information comprises a hash value obtained by carrying out hash operation on each piece of data to be transmitted by the sending end;
the data comparison device is used for carrying out Hash operation on the received data, comparing the Hash value obtained by calculation with the Hash value contained in the check information, if the Hash value is consistent with the Hash value contained in the check information, generating confirmation information for confirming that the received data is correct, and otherwise, generating confirmation information for confirming that the received data is wrong;
and the information sending device is used for sending the confirmation information to the sending end.
The invention also provides a multi-channel data transmission system which comprises the multi-channel data sending device and the multi-channel data receiving device.
Drawings
Fig. 1 is a flowchart of a method for sending multi-channel data according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for receiving multi-channel data according to an embodiment of the present invention;
fig. 3 is a block diagram of an rf signal transmitting or receiving apparatus according to an embodiment of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a flowchart of a method for sending multichannel data according to an embodiment of the present invention, and as shown in fig. 1, the method includes:
11. finishing handshake authentication with a receiving end;
specifically, the sending end sends a handshake data packet to the receiving end, the receiving end feeds handshake data back to the sending end, the sending end can complete handshake authentication after receiving a reply, and handshake information includes device ID, data information, protocol information, channel information and the like.
12. When the data to be transmitted accords with a preset data format, distributing a corresponding channel for the data to be transmitted;
specifically, for data to be transmitted conforming to a preset data format, channels may be directly allocated, and a specific channel allocation method in this step may be implemented by using a variety of methods, for example, a remainder-taking method is adopted, and the specific process is as follows: and taking the remainder of n for each piece of data to be transmitted, and distributing channels with channel numbers identical to the last digit of the remainder corresponding to the piece of data to be transmitted for each piece of data to be transmitted, wherein n is the number of the channels.
For example, the data returned by the sensor may be 12345; 122; 333; 4342; 4532 the data of one number type includes parameters such as ID, sensor SN, temperature, humidity, etc., and the specific content is determined by the protocol, when channel allocation is performed, if there are 10 transmission channels, a remainder of 10 can be taken for ID therein, and the remainder is used as its index, so that the last bit of the remainder is several and several channels are used for transmission.
13. And sending the data to be transmitted to the receiving end through the distributed channels.
In the embodiment, each piece of data to be transmitted is sent through the corresponding distributed channels, multi-channel parallel transmission can be achieved, the transmission process is not interfered with each other, congestion can be avoided when more data are transmitted, the transmission speed is greatly increased, and the requirement of the whole internet of things system on the transmission efficiency is met.
Optionally, in this embodiment, the method further includes:
14. when the data to be transmitted does not conform to a preset data format, converting the data to be transmitted into the preset data format and cutting the data to be transmitted into m sections, wherein m is a positive integer;
specifically, for data to be transmitted which does not conform to the preset data format, a proper protocol needs to be selected to be segmented, and then channels are allocated to each segment of data obtained through segmentation. For example, for non-digital data or larger data, such as a video, an article, etc., an rlz (relative Lempel ziv) algorithm may be selected to convert the data into a pair of numbers (position, length), and the number in the pair of numbers is used as a basis for remainder.
15. Allocating a corresponding channel for each section of data;
16. and sending each piece of data to the receiving end through the distributed channel.
In step 15, the allocating a corresponding channel to each segment of data specifically includes:
and taking the remainder of m for each segment of data, and allocating a channel with the channel number same as the last digit of the remainder corresponding to the segment of data to each segment of data.
In the embodiment, for the data to be transmitted which does not conform to the preset data format, the format conversion and the cutting are firstly carried out, and then the corresponding channels are redistributed for transmission, so that the transmission requirements of the data in various data formats can be met.
Optionally, in this embodiment, the method further includes:
17. when the data to be transmitted accords with a preset data format, carrying out hash operation on each piece of data to be transmitted, and sending the hash value obtained by calculation to the receiving end as the check information of the piece of data;
18. when the data to be transmitted does not conform to the preset data format, performing hash operation on each section of data obtained by cutting, and sending the hash value obtained by calculation to the receiving end as the verification information of the section of data;
19. receiving confirmation information returned by the receiving end according to the received data and the corresponding verification information;
20. if the confirmation information confirms that the data received by the receiving end is correct, deleting the data, otherwise, retransmitting the data.
In this embodiment, through the data verification process, the correct integrity of the transmitted data can be ensured. After receiving the confirmation message, the sending end determines that the data has been successfully sent, and may delete the data, and the deleted message will not be sent again. If the data is not received within a certain waiting time, the data is sent again, the waiting time can be determined by a user, and the longer the waiting time is, the higher the reliability of the data is, the more the system resources are occupied. If the retransmission exceeds the set time or the confirmation information is not received, the transmission of the information is abandoned, and error information is reported to an upper layer application program.
Corresponding to the multichannel data sending method provided by the foregoing embodiment, an embodiment of the present invention provides a multichannel data receiving method, as shown in fig. 2, where the method includes:
21. finishing handshake authentication with a sending end;
the specific authentication process has been described in the foregoing, and is not described herein again.
22. And receiving the data sent by the sending end, wherein a channel for receiving the data corresponds to a channel for sending the data by the sending end.
In the embodiment, the data is received through the channel corresponding to the channel through which the sending end sends the data, multi-channel parallel transmission can be achieved, the transmission process is not interfered with each other, congestion can be avoided when more data are transmitted, the transmission speed is greatly increased, and the requirement of the whole internet of things system on the transmission efficiency is met.
Optionally, in this embodiment, the method further includes:
23. receiving verification information of the data sent by the sending end, wherein the verification information comprises a hash value obtained by the sending end performing hash operation on each piece of data to be transmitted;
24. performing hash operation on the received data, comparing the hash value obtained by calculation with the hash value contained in the check information, if the hash value is consistent with the hash value contained in the check information, generating confirmation information for confirming that the received data is correct, and if the hash value is not consistent with the hash value contained in the check information, generating confirmation information for confirming that the received data is wrong;
25. and sending the confirmation information to the sending end.
In this embodiment, the above data verification process can ensure the correct integrity of the received data.
An embodiment of the present invention provides a multichannel data transmitting apparatus, including:
the first handshake authentication device is used for finishing handshake authentication with the receiving end;
the first channel distribution device is used for distributing corresponding channels to the data to be transmitted when the data to be transmitted conforms to a preset data format;
and the first data sending device is used for sending the data to be transmitted to the receiving end through the distributed channels.
Optionally, in this embodiment, the apparatus further includes:
the data cutting device is used for converting the data to be transmitted into a preset data format and cutting the data to be transmitted into m sections when the data to be transmitted does not conform to the preset data format, wherein m is a positive integer;
the second channel distribution device is used for distributing a corresponding channel for each section of data;
and the second data sending device is used for sending each piece of data to the receiving end through the distributed channel.
Optionally, in this embodiment, the first channel distribution device is specifically configured to:
taking the remainder of n for each piece of data to be transmitted, and distributing channels with channel numbers identical to the last digit of the remainder corresponding to the piece of data to be transmitted for each piece of data to be transmitted, wherein n is the number of the channels;
the second channel allocation device is specifically configured to:
and taking the remainder of m for each segment of data, and allocating a channel with the channel number same as the last digit of the remainder corresponding to the segment of data to each segment of data.
Optionally, in this embodiment, the apparatus further includes:
the first data verification device is used for performing hash operation on each piece of data to be transmitted when the data to be transmitted conforms to a preset data format, and sending a hash value obtained by calculation to the receiving end as verification information of the piece of data;
the second data checking device is used for carrying out Hash operation on each section of data obtained by cutting when the data to be transmitted does not conform to the preset data format, and sending the Hash value obtained by calculation to the receiving end as the checking information of the section of data;
the data confirmation device is used for receiving confirmation information returned by the receiving end according to the received data and the corresponding verification information;
and the deleting and retransmitting device is used for deleting the data if the confirmation information confirms that the data received by the receiving end is correct, and retransmitting the data if the confirmation information does not confirm that the data is correct.
An embodiment of the present invention provides a multichannel data receiving apparatus, including:
the second handshake authentication device is used for finishing handshake authentication with the sending end;
and the data receiving device is used for receiving the data sent by the sending end, wherein a channel for receiving the data corresponds to a channel for sending the data by the sending end.
Optionally, in this embodiment, the apparatus further includes:
the information receiving device is used for receiving the check information of the data sent by the sending end, and the check information comprises a hash value obtained by carrying out hash operation on each piece of data to be transmitted by the sending end;
the data comparison device is used for carrying out Hash operation on the received data, comparing the Hash value obtained by calculation with the Hash value contained in the check information, if the Hash value is consistent with the Hash value contained in the check information, generating confirmation information for confirming that the received data is correct, and otherwise, generating confirmation information for confirming that the received data is wrong;
and the information sending device is used for sending the confirmation information to the sending end.
The embodiment of the invention provides a multi-channel data transmission system, which comprises the multi-channel data sending device and a multi-channel data receiving device.
The multi-channel data transmitting and receiving method provided by the above embodiments of the present invention can be implemented by a radio frequency signal transmitting or receiving device, as shown in fig. 3, the device includes a first processor (i.e., a high performance processor in the figure), a memory, n second processors (i.e., a high performance processor in the figure), n +1 radio frequency chips, an antenna combiner, and a broadband antenna, where the first processor is connected to 1 radio frequency chip (No. 0) and the memory, the memory is connected to the n second processors, the n second processors are connected to n other radio frequency chips (No. 1 to n) one-to-one, and all the radio frequency chips are connected to the broadband antenna through the antenna combiner.
The processor and the radio frequency chip can select the existing mainstream chip, such as an STM chip of an ARM architecture or a domestic dragon core.
The operation principle of the device is as follows:
and (3) handshake process: the first processor of the sending end firstly sends a handshake data packet through the No. 0 radio frequency chip, and the No. 0 radio frequency chip of the receiving end sends data to the first processor for processing after receiving the handshake data and feeds the handshake data back to the sending end. And the sending end completes handshake authentication after receiving the reply, wherein handshake information comprises equipment ID, data information, protocol information, channel information and the like.
And (3) a sending process: the sending end firstly uses the first processor to cut the data according to a proper protocol selected by the type of the data, which is beneficial to marking and distributing the data to different channels in a surplus mode, or obtains a data pair in an RLZ mode and then distributes the data pair. The small pieces of data that are cut are stored in memory. The first processor reads the small segment of data corresponding to the serial number of the small segment of data from the memory and sends the small segment of data to the distributed radio frequency chips, the radio frequency chips encode the data into radio frequency signals and send the radio frequency signals to the antenna combiner, and the antenna combiner transmits the 1-n signals to the receiving end by using the broadband antenna.
The receiving process comprises the following steps: the antenna combiner collects electromagnetic waves through the broadband antenna and then sends signals to the number 1 to n radio frequency chips through filtering. After the radio frequency chip analyzes the signals into digital signals, the corresponding second processor stores the data in the memory. The first processor reads the fragmented small segment data in the memory, utilizes the corresponding protocol and splices it into complete data.
Checking a retransmission process: when the sending end sends data, the first processor sends the verification information of each small segment of data in real time through the No. 0 radio frequency chip. The receiving end confirms the correctness of the data through the check information and confirms the information to the sending end. The sending end deletes the data after receiving the correct confirmation information, and starts the retransmission process if the confirmation or the error confirmation is not received.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for transmitting multi-channel data, comprising:
finishing handshake authentication with a receiving end;
when the data to be transmitted accords with a preset data format, distributing a corresponding channel for the data to be transmitted;
and sending the data to be transmitted to the receiving end through the distributed channels.
2. The method of claim 1, further comprising:
when the data to be transmitted does not conform to a preset data format, converting the data to be transmitted into the preset data format and cutting the data to be transmitted into m sections, wherein m is a positive integer;
allocating a corresponding channel for each section of data;
and sending each piece of data to the receiving end through the distributed channel.
3. The method according to claim 2, wherein the allocating a corresponding channel to each piece of data to be transmitted specifically includes:
taking the remainder of n for each piece of data to be transmitted, and distributing channels with channel numbers identical to the last digit of the remainder corresponding to the piece of data to be transmitted for each piece of data to be transmitted, wherein n is the number of the channels;
the allocating a corresponding channel to each segment of data specifically includes:
and taking the remainder of n for each segment of data, and allocating a channel with the channel number same as the last digit of the remainder corresponding to the segment of data to each segment of data.
4. The method of claim 2 or 3, further comprising:
when the data to be transmitted accords with a preset data format, carrying out hash operation on each piece of data to be transmitted, and sending the hash value obtained by calculation to the receiving end as the check information of the piece of data;
when the data to be transmitted does not conform to the preset data format, performing hash operation on each section of data obtained by cutting, and sending the hash value obtained by calculation to the receiving end as the verification information of the section of data;
receiving confirmation information returned by the receiving end according to the received data and the corresponding verification information;
if the confirmation information confirms that the data received by the receiving end is correct, deleting the data, otherwise, retransmitting the data.
5. A multi-channel data receiving method, comprising:
finishing handshake authentication with a sending end;
and receiving the data sent by the sending end, wherein a channel for receiving the data corresponds to a channel for sending the data by the sending end.
6. The method of claim 5, further comprising:
receiving verification information of the data sent by the sending end, wherein the verification information comprises a hash value obtained by the sending end performing hash operation on each piece of data to be transmitted;
performing hash operation on the received data, comparing the hash value obtained by calculation with the hash value contained in the check information, if the hash value is consistent with the hash value contained in the check information, generating confirmation information for confirming that the received data is correct, and if the hash value is not consistent with the hash value contained in the check information, generating confirmation information for confirming that the received data is wrong;
and sending the confirmation information to the sending end.
7. A multi-channel data transmission apparatus, comprising:
the first handshake authentication device is used for finishing handshake authentication with the receiving end;
the first channel distribution device is used for distributing corresponding channels to the data to be transmitted when the data to be transmitted conforms to a preset data format;
and the first data sending device is used for sending the data to be transmitted to the receiving end through the distributed channels.
8. A multi-channel data receiving apparatus, comprising:
the second handshake authentication device is used for finishing handshake authentication with the sending end;
and the data receiving device is used for receiving the data sent by the sending end, wherein a channel for receiving the data corresponds to a channel for sending the data by the sending end.
9. The apparatus of claim 8, further comprising:
the information receiving device is used for receiving the check information of the data sent by the sending end, and the check information comprises a hash value obtained by carrying out hash operation on each piece of data to be transmitted by the sending end;
the data comparison device is used for carrying out Hash operation on the received data, comparing the Hash value obtained by calculation with the Hash value contained in the check information, if the Hash value is consistent with the Hash value contained in the check information, generating confirmation information for confirming that the received data is correct, and otherwise, generating confirmation information for confirming that the received data is wrong;
and the information sending device is used for sending the confirmation information to the sending end.
10. A multi-channel data transmission system comprising an apparatus as claimed in claim 7 and an apparatus as claimed in claim 8 or 9.
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| CN111917659A (en) * | 2020-07-23 | 2020-11-10 | 上海聚音信息科技有限公司 | Concurrent data transmission method, system, device and computer readable storage medium |
| CN112822260A (en) * | 2020-12-31 | 2021-05-18 | 北京天融信网络安全技术有限公司 | File transmission method and device, electronic equipment and storage medium |
| CN116701293A (en) * | 2023-07-27 | 2023-09-05 | 深圳市云端未来科技有限公司 | Multi-channel data parallel transmission method and system based on ARM cluster server |
| CN117081708A (en) * | 2023-09-15 | 2023-11-17 | 深圳旷世科技有限公司 | UWB wireless multichannel audio transmission method, system and audio equipment |
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