CN104994035A - Data transmission method based on Beidou short message communication - Google Patents
Data transmission method based on Beidou short message communication Download PDFInfo
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Abstract
The invention relates to a data transmission method based on Beidou short message communication. The method is characterized in that different user data to be sent to the same Beidou receiving terminal is bound in one Beidou short message, then the Beidou short message is sent out through a Beidou sending terminal, the Beidou short message bound by different user data becomes a mixed message, the length of the mixed message meets the condition that the Beidou short message can be sent through a Beidou short message protocol, and the content formats of the mixed message comprise a first identifier, a first original data length, first original data, a second identifier, a second original data length, second original data, an nth identifier, an nth original data length, and nth original data. Compared with the prior art, the method has the advantages that data from different users can be bound in one Beidou short message, and the Beidou sending terminal sends the Beidou short message to the Beidou receiving terminal, so that the user ratio of the Beidou short message can be improved furthest, and the Beidou short message communication function can be better used in wide practical application.
Description
Technical field
The present invention relates to a kind of data transmission method based on the communication of Big Dipper short message.
Background technology
The civilian short message communication of Beidou satellite navigation and positioning system has very large restriction on transmission frequency: within one minute, can only send out once at most, which has limited and much realizes based on the application of Big Dipper short message communication.In a lot of practical application, often there is such phenomenon, namely each data volume sent not is a lot, and such as multi-user information communication---multiple user shares a Big Dipper and communicates, and most information is all very short, on average about 20 bytes.If Big Dipper short message only sends such short data, the then data user rate very low (lower than 20%) of each message, and every bar data must send according to the queuing of frequency once in a minute regardless of length, the average latency of such user will be very long, and latency issue will be very serious.
Summary of the invention
Technical problem to be solved by this invention provides a kind of data transmission method based on the communication of Big Dipper short message for above-mentioned prior art, and different pieces of information can bundle and mail to another identical Beidou communication terminal by same Beidou communication terminal by the method.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of data transmission method based on the communication of Big Dipper short message, it is characterized in that: be bundled in a Big Dipper short message by needing the different pieces of information mailing to same Big Dipper receiving terminal, then sent by Big Dipper transmitting terminal, Big Dipper short message after different user data binding becomes mixing message, the length of mixing message meets and can send by Big Dipper short message agreement, the content of mixing message comprises: mark, first initial data length, first initial data, second initial data length, second initial data, n-th initial data length, n-th initial data.
As the good scheme of one, mixing message form be: mark, the first initial data length, the first initial data, the second initial data length, the second initial data ... n-th initial data length, the n-th initial data.
Preferably, the length of mark is 1 byte, the first initial data length, the second initial data length ... the figure place of the n-th initial data length is also 1 byte.
Another good scheme, mixing message form be: mark, the first initial data length, the second initial data length ... n-th initial data length, the first initial data, the second initial data ..., the n-th initial data; Wherein, the content of mark comprises flag bit and has altogether bundled several initial data.
As improvement, the mode that different user data bundlees into same Big Dipper short message is:
In Big Dipper transmitting terminal, set up and safeguard a transmit queue, when Big Dipper transmitting terminal can send Big Dipper short message, first take out from the head of transmit queue and remove first bar outgoing data, first bar outgoing data is put into mixing message as the first initial data, add up the byte length of the first initial data, by the first initial data length of the byte length of the first initial data stored in mixing message; Then travel through transmit queue successively backward, find first outgoing data can putting into mixing message remaining space, this outgoing data is put into mixing message as the second initial data, and from transmit queue, delete this outgoing data, the byte length of same this outgoing data of statistics is stored in the second initial data length mixing message; According to the constantly circulation of this rule, until mixing message remaining space cannot hold any outgoing data in transmit queue.
Improve again, in Big Dipper transmitting terminal, for each user data provides level of priority, then according to level of priority by user data stored in transmit queue, the user data that priority is the highest is placed on the head of transmit queue, and the user data that priority is low is placed on after the high data of priority.
Improve again, after Big Dipper receiving terminal receives the mixing message that Big Dipper transmitting terminal sends, according to the content format of mixing message, extract the initial data in mixing message successively.
Compared with prior art, the invention has the advantages that: can by the data-bound from different user in same Big Dipper short message, then Big Dipper receiving terminal is mail to by Big Dipper transmitting terminal, improve the utilance of Big Dipper short message to greatest extent, Big Dipper short message communication function is better used in practical application widely.
Accompanying drawing explanation
Fig. 1 is the content format mixing message in the embodiment of the present invention one.
Fig. 2 is the content format mixing message in the embodiment of the present invention one.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one
The data transmission method based on the communication of Big Dipper short message provided in the present embodiment, to need the different pieces of information mailing to same Big Dipper receiving terminal to be bundled in a Big Dipper short message, then sent by Big Dipper transmitting terminal, here different pieces of information can from the subterminal different application of same Beidou communication (or user) data, also can, from identical or different application (or user) data of different Beidou communication terminal, also can be same Beidou communication terminal same application (user) data under Different periods; Big Dipper short message after different user data binding becomes mixing message, the length of mixing message meets and can send by Big Dipper short message agreement, mixing message content format be: mark, the first initial data length, the first initial data, the second initial data length, the second initial data ... n-th initial data length, the n-th initial data, shown in Figure 1; The size of n is determined according to actual conditions initial data size.In the present embodiment, in order to ensure to mix message in the extraction of receiving terminal, the length of mark is 1 byte, by the first initial data length, the second initial data length ... the figure place of the n-th initial data length is also all set to 1 byte.Certainly, according to actual needs, also the length of flag can be set to 2 or 3 bytes, by the first initial data length, the second initial data length ... the figure place of the n-th initial data length is set to 2 or 3 bytes.
In actual mechanical process, the mode that different user data bundlees into same Big Dipper short message is:
In Big Dipper transmitting terminal, set up and safeguard a transmit queue, when Big Dipper transmitting terminal can send Big Dipper short message, first take out from the head of transmit queue and remove first bar outgoing data, first bar outgoing data is put into mixing message as the first initial data, add up the byte length of the first initial data, by the first initial data length of the byte length of the first initial data stored in mixing message; Then travel through transmit queue successively backward, find first outgoing data can putting into mixing message remaining space, this outgoing data is put into mixing message as the second initial data, and from transmit queue, delete this outgoing data, the byte length of same this outgoing data of statistics is stored in the second initial data length mixing message; According to the constantly circulation of this rule, until mixing message remaining space cannot hold any outgoing data in transmit queue.
And outgoing data in transmit queue in the following way stored in: in Big Dipper transmitting terminal, for each user data provides level of priority, then according to level of priority by user data stored in transmit queue, the user data that priority is the highest is placed on the head of transmit queue, and the user data that priority is low is placed on after the high data of priority.This mode, under can ensureing preferentially to send the high user data prerequisite of priority, bundlees to greatest extent into more user data pending in a mixing message.
And after Big Dipper receiving terminal receives the short message that Big Dipper transmitting terminal sends, first character joint content according to short message judges whether identical with the flag mixing message, in this way, then this short message is mixing message, then read second byte content of this mixing message, read the first initial data of corresponding length according to the content of second byte; After first initial data reads, then read the content of a byte, according to this byte content, read the second initial data of respective byte length, the like, extract the initial data in mixing message successively.
Embodiment two
With embodiment one unlike, mixing message content format be: mark, the first initial data length, the first initial data, the second initial data length, the second initial data ... n-th initial data length, the n-th initial data.Shown in Figure 2; Mark length be 1 byte, the first initial data length, the second initial data length ... the figure place of the n-th initial data length is set to 4 ~ 6 bits; The content of mark comprises flag bit and has altogether bundled several initial data, and bit (or 2bits, a 3bits) content in 1 byte of mark can be set to flag bit, residue bits shows altogether to have bundled several initial data.
Claims (7)
1. the data transmission method based on the communication of Big Dipper short message, it is characterized in that: be bundled in a Big Dipper short message by needing the different user data mailing to same Big Dipper receiving terminal, then sent by Big Dipper transmitting terminal, Big Dipper short message after different user data binding becomes mixing message, the length of mixing message meets and can send by Big Dipper short message agreement, the content of mixing message comprises: mark, first initial data length, first initial data, second initial data length, second initial data, n-th initial data length, n-th initial data.
2. data transmission method according to claim 1, is characterized in that: mixing message form be: mark, the first initial data length, the first initial data, the second initial data length, the second initial data ... n-th initial data length, the n-th initial data.
3. data transmission method according to claim 2, is characterized in that: the length of mark is 1 byte, the first initial data length, the second initial data length ... the figure place of the n-th initial data length is also 1 byte.
4. data transmission method according to claim 1, is characterized in that: mixing message form be: mark, the first initial data length, the second initial data length ... n-th initial data length, the first initial data, the second initial data ..., the n-th initial data; Wherein, the content of mark comprises flag bit and has altogether bundled several initial data.
5. data transmission method according to claim 1, is characterized in that: the mode that different user data bundlees into same Big Dipper short message is:
Set up and safeguard a transmit queue, when Big Dipper transmitting terminal can send Big Dipper short message, first take out from the head of transmit queue and remove first bar outgoing data, first bar outgoing data is put into mixing message as the first initial data, add up the byte length of the first initial data, by the first initial data length of the byte length of the first initial data stored in mixing message; Then travel through transmit queue successively backward, find first outgoing data can putting into mixing message remaining space, this outgoing data is put into mixing message as the second initial data, and from transmit queue, delete this outgoing data, the byte length of same this outgoing data of statistics is stored in the second initial data length mixing message; According to the constantly circulation of this rule, until mixing message remaining space cannot hold any outgoing data in transmit queue.
6. data transmission method according to claim 5, it is characterized in that: in Big Dipper transmitting terminal, for each user data provides level of priority, then according to level of priority by user data stored in transmit queue, the user data that priority is the highest is placed on the head of transmit queue, and the user data that priority is low is placed on after the high data of priority.
7. data transmission method according to claim 1, is characterized in that: after Big Dipper receiving terminal receives the mixing message that Big Dipper transmitting terminal sends, and according to the content format of mixing message, extracts the initial data in mixing message successively.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211236A (en) * | 2016-06-29 | 2016-12-07 | 中国电子科技集团公司第五十四研究所 | Big Dipper RDSS micro-base station information framing transmission method towards multi-service multi-user |
| CN110149601A (en) * | 2019-05-15 | 2019-08-20 | 青岛农业大学 | A kind of data assembly method carrying out big data communication for Beidou short message |
| CN111130625A (en) * | 2019-12-25 | 2020-05-08 | 中电科航空电子有限公司 | Short message processing method and device |
| CN113055832A (en) * | 2019-12-27 | 2021-06-29 | 北京联合众为科技发展有限公司 | Method for transmitting Beidou short messages through unified management of multi-link Beidou equipment |
| CN114710752A (en) * | 2022-03-16 | 2022-07-05 | 西安交远能源科技有限公司 | Beidou short message self-organizing broadcast method under extreme conditions |
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| CN101150497A (en) * | 2006-09-20 | 2008-03-26 | 华为技术有限公司 | Multi-data packet transmission method, system and device in mobile communication |
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| CN101150497A (en) * | 2006-09-20 | 2008-03-26 | 华为技术有限公司 | Multi-data packet transmission method, system and device in mobile communication |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211236A (en) * | 2016-06-29 | 2016-12-07 | 中国电子科技集团公司第五十四研究所 | Big Dipper RDSS micro-base station information framing transmission method towards multi-service multi-user |
| CN110149601A (en) * | 2019-05-15 | 2019-08-20 | 青岛农业大学 | A kind of data assembly method carrying out big data communication for Beidou short message |
| CN110149601B (en) * | 2019-05-15 | 2021-08-03 | 青岛农业大学 | Data assembly method for big data communication of Beidou short message |
| CN111130625A (en) * | 2019-12-25 | 2020-05-08 | 中电科航空电子有限公司 | Short message processing method and device |
| CN113055832A (en) * | 2019-12-27 | 2021-06-29 | 北京联合众为科技发展有限公司 | Method for transmitting Beidou short messages through unified management of multi-link Beidou equipment |
| CN113055832B (en) * | 2019-12-27 | 2022-03-29 | 北京联合众为科技发展有限公司 | Method for uniformly managing and sending Beidou short messages of multiple same Beidou devices |
| CN114710752A (en) * | 2022-03-16 | 2022-07-05 | 西安交远能源科技有限公司 | Beidou short message self-organizing broadcast method under extreme conditions |
| CN114710752B (en) * | 2022-03-16 | 2024-04-26 | 西安交远能源科技有限公司 | Beidou short message self-organizing broadcast method under extreme condition |
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