CN106506508A - A kind of method of extension Big Dipper short message length - Google Patents
A kind of method of extension Big Dipper short message length Download PDFInfo
- Publication number
- CN106506508A CN106506508A CN201611018087.0A CN201611018087A CN106506508A CN 106506508 A CN106506508 A CN 106506508A CN 201611018087 A CN201611018087 A CN 201611018087A CN 106506508 A CN106506508 A CN 106506508A
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- message
- big dipper
- short message
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- flag bit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a kind of method of extension Big Dipper short message length, methods described is：1st, the data form of wall scroll Big Dipper message is defined, and wherein, the data form of short message is：Short message flag bit+effective information content, the short message flag bit represent that type of message is short message；The data form of long message is：Long message mark+when preceding article number+total number+end mark+message ID+ effective information contents, 2, the transmission mechanism of Big Dipper transmitter is set, if when sending short message, normal flow sends, if send long message, the message group for constituting the long message need to be sent one by one, until being sent；The 3rd, reception mechanism and the analysis program of Beidou receiver are set, reception processing is carried out to message.The present invention has effectively evaded the wall scroll capabilities length of Big Dipper short message and has limited, and has expanded the application scenarios of Big Dipper short message.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method of extension Big Dipper short message length.
Background technology
As Beidou communication service is in all standing of the Asian-Pacific area, in recent years, with Big Dipper civil nature progress faster, passing
The region that do not cover of system communication mode, frequency also more and more higher of the people using Big Dipper short message, Big Dipper short message is emergent
The fields such as relief, field work, offshore production have played important function.
Big Dipper generation satellite provides Big Dipper short message service, as satellite channel resource is limited, allows the Big Dipper civilian at present
Terminal is equipped with the communication card for using and is generally civilian 3 grades of cards, and it is 78 that the communication card of this rank can send a length every 60 seconds
The message of byte, as partial bytes will also be used for information description and form definition, the real effective byte for being used for message transmission
Generally Chinese character of 70 bytes, i.e., 35 or so.Under this length limitation, the information that can be transmitted is relatively limited, it is impossible to fully send out
Wave the due advantage of Beidou communication.
Content of the invention
The technical problem to be solved in the present invention, is to provide a kind of method of extension Big Dipper short message length, extends wall scroll
Big Dipper short message length, expands its use occasion.
The present invention is realized in：A kind of method of extension Big Dipper short message length, methods described comprise the steps：
Step 1, the data form for defining wall scroll Big Dipper message, wherein, the data form of short message is：Short message flag bit
+ effective information content, the short message flag bit represent that type of message is short message；The data form of long message is：Long message
Mark+and when preceding article number+total number+end mark+message ID+ effective information contents, the long message mark represents type of message
For long message, described represent sequence order of the current message in long message when preceding article number, total number represent long message altogether by
Several short messages composition, the end mark represent that whether current message is the last item in long message, and message ID is used for marking
Know the long message；
Step 2, the transmission mechanism for arranging Big Dipper transmitter, if send short message, normal flow sends, if sending long report
Wen Shi, need to send the message group for constituting the long message one by one, until being sent；
Step 3, the reception mechanism for arranging Beidou receiver and analysis program, carry out reception processing to message.
Further, by the long message mark in long message, when preceding article number, total number, end mark be correspondingly arranged for mark
Will position 1, flag bit 2, flag bit 3, flag bit 4, each flag length in messages can be configured according to demand.
Further, described 1 bit is used to represent flag bit 1；Flag bit 2,3 is represented respectively with 3 bits, its
In, 3 bit potential energies represent digital 0-7, the effective information that such long message can be transmitted in 280 Chinese characters, with 1 bit table
Show that flag bit 4, whole flag bit fields account for 1 byte；With 4 byte representation message ID.
Further, the step 3 is specially：After the Beidou receiver receives Big Dipper message, according to long or short report
Literary flag bit judges type of message, if short message, then directly parses and shows；If long message, then according to end mark
Will position, judge whether that the message group for constituting the long message is received when the relation of preceding article number and total number, if receiving,
Then parse the message and itself and the message for caching before package splicing, finally show；If not received, parse simultaneously
Continue waiting for receiving next message after caching the message.
Further, can there is packet loss phenomenon in Big Dipper message, need to arrange a time-out time, if exceeding the time, not yet
New message is received, then also the message for receiving before this is packaged, and is shown, so as to show the residue in addition to packet loss message
Information.
Further, in order to avoid the impact of packet loss completely, Big Dipper transmitter is given after being properly received by Beidou receiver
The means of receipt, if Big Dipper transmitter confiscates receipt, resend the message.
It is an advantage of the current invention that：The present invention compared with prior art, extends the capabilities length of wall scroll Big Dipper short message,
Can accomplish to limit without number of words, improve the communication capacity of Big Dipper message, can be the special dimensions such as emergent, rescue, ocean, field
More powerful service ability is provided.
Description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the reception system schematic diagram of existing complete Big Dipper short message.
Fig. 2 is method of the present invention schematic flow sheet.
Fig. 3 is the reception mechanism of the Beidou receiver of the present invention and the schematic flow sheet of analysis program.
Specific embodiment
The reception system of one complete Big Dipper short message is as shown in figure 1, Big Dipper message transmitter sends short message, Jing Guobei
Beidou receiver is sent to after the transmission of bucket channel, receiver is parsed to short message and shown effective information.Therefore in the Big Dipper
In the case that the wall scroll byte length of short message has been fixed, need to carry out a plurality of short message splicing group bag, can simulate
The effect of long message.This is accomplished by being defined wall scroll Big Dipper message data form, and redesigns Big Dipper transmitter
Router, the reception of Beidou receiver and analysis program.
Refering to shown in Fig. 2 and Fig. 3, a kind of method of extension Big Dipper short message length of the present invention is comprised the following steps that：Step
Rapid 1, the data form of wall scroll Big Dipper message is defined, and wherein, the data form of short message is：Short message flag bit+effective information
Content, short message flag bit (length is 1 bit) expression type of message is short message；Ginseng is shown in Table 1
Table 1
The data form of long message is：Long message mark+effectively believe as preceding article number+total number+end mark+message ID+
Breath content, the long message mark represent type of message for long message, described represent current message in long message when preceding article number
Sequence order, total number represents that long message is made up of several short messages altogether, and whether the end mark represents current message
The last item in for long message, message ID are used for identifying the long message；Ginseng is shown in Table 2,
Table 2
Step 2, the transmission mechanism for arranging Big Dipper transmitter, if send short message, normal flow sends, if sending long report
Wen Shi, need to send the message group for constituting the long message one by one, until being sent；
Step 3, the reception mechanism for arranging Beidou receiver and analysis program, carry out reception processing to message.
By the long message mark in long message, when preceding article number, total number, end mark be correspondingly arranged for flag bit 1, mark
Position 2, flag bit 3, flag bit 4, each flag length in messages can be configured according to demand.
Described 1 bit is used to represent flag bit 1；Flag bit 2,3 is represented respectively with 3 bits, wherein, 3 bits
Potential energy represents digital 0-7, and the effective information that such long message can be transmitted meets most occasions in the individual Chinese characters of 280 (35*8)
Under use demand；Flag bit 4 is represented with 1 bit.In this manner it is achieved that all identification field accounts for 1 byte.Message ID
It is used for identifying the long message, such Beidou receiver same time period can be whereby when receiving the message group of a plurality of different long messages
It is distinguish between, it is proposed that with 4 byte representations, need to only ensures the uniqueness within the long message transmission cycle.Above-mentioned mark
The length of position in actual applications, voluntarily can be adjusted according to demand, and being theoretically obtainable long message does not have length limitation.Message
Remainder then be effective information content.
The step 3 is specially：After the Beidou receiver receives Big Dipper message, sentenced according to long or short message flag bit
Disconnected type of message, if short message, then directly parses and shows；If long message, then according to end mark position, work as preceding article
With the relation of total number, number judges whether that the message group for constituting the long message is received, if receiving, parse this
Itself and the message for caching before are simultaneously packaged splicing by message, are finally shown；If not received, the report is parsed and caches
Continue waiting for receiving next message after text.Can there is packet loss phenomenon in Big Dipper message, need to arrange a time-out time, if exceed should
Time, do not receive new message yet, then also the message for receiving before this packages, and show, so as to show except packet loss message
Outside remaining information.
Further, in order to avoid the impact of packet loss completely, Big Dipper transmitter is given after being properly received by Beidou receiver
The means of receipt, if Big Dipper transmitter confiscates receipt, resend the message.
In a word, the present invention compared with prior art, extends the capabilities length of wall scroll Big Dipper short message, can accomplish without word
Number is limited, and improves the communication capacity of Big Dipper message, can be provided for special dimensions such as emergent, rescue, ocean, fields more powerful
Service ability.
Although the foregoing describing the specific embodiment of the present invention, those familiar with the art should manage
Solution, the specific embodiment described by us are merely exemplary, rather than for the restriction to the scope of the present invention, are familiar with this
Equivalent modification and change that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (6)
1. a kind of extension Big Dipper short message length method, it is characterised in that：Methods described comprises the steps：
Step 1, the data form for defining wall scroll Big Dipper message, wherein, the data form of short message is：Short message flag bit+have
Effect information content, the short message flag bit represent that type of message is short message；The data form of long message is：Long message mark
+ when preceding article number+total number+end mark+message ID+ effective information contents, the long message mark represents that type of message is length
Message, described represents that sequence order of the current message in long message, total number represent long message altogether by several when preceding article number
Short message is constituted, and the end mark represents that whether current message is the last item in long message, and message ID is used for identifying this
Long message；
Step 2, the transmission mechanism for arranging Big Dipper transmitter, if send short message, normal flow sends, if sending long message
When, the message group for constituting the long message need to be sent one by one, until being sent；
Step 3, the reception mechanism for arranging Beidou receiver and analysis program, carry out reception processing to message.
2. according to claim 1 a kind of extension Big Dipper short message length method, it is characterised in that：By in long message
Long message mark, it is correspondingly arranged as flag bit 1, flag bit 2, flag bit 3, flag bit 4 when preceding article number, total number, end mark,
Each flag length in messages can be configured according to demand.
3. according to claim 2 a kind of extension Big Dipper short message length method, it is characterised in that：Described use 1 ratio
Special position represents flag bit 1；Flag bit 2,3 is represented respectively with 3 bits, and wherein, 3 bit potential energies represent digital 0-7, so
With 1 bit, the effective information that long message can be transmitted represents that flag bit 4, whole flag bit fields account for 1 in 280 Chinese characters
Byte；With 4 byte representation message ID.
4. according to claim 1 a kind of extension Big Dipper short message length method, it is characterised in that：The step 3 has
Body is：After the Beidou receiver receives Big Dipper message, type of message is judged according to long or short message flag bit, if short
Message, then directly parse and show；If long message, then according to end mark position, sentence when the relation of preceding article number and total number
The disconnected message group for whether constituting the long message is received, if receiving, parse the message and by its with delay before
The message that deposits packages splicing, finally shows；If not received, under continuing waiting for receiving after parsing and caching the message
One message.
5. according to claim 1 a kind of extension Big Dipper short message length method, it is characterised in that：Big Dipper message can be deposited
In packet loss phenomenon, a time-out time need to be set, if exceeding the time, do not receive new message yet, then also will receive before this
Message packages, and shows, so as to show the remaining information in addition to packet loss message.
6. according to claim 1 a kind of extension Big Dipper short message length method, it is characterised in that：In order to avoid completely
The impact of packet loss, gives the means of Big Dipper transmitter receipt by Beidou receiver, if Big Dipper transmitter is confiscated after being properly received
Receipt, then resend the message.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282402A (en) * | 2018-01-24 | 2018-07-13 | 中南大学 | Packet scattering method based on coding in data center network |
| CN109639679A (en) * | 2018-12-14 | 2019-04-16 | 航天恒星科技有限公司 | A kind of Tianhuangping pumped storage plant data format design method adapting to Big Dipper short message |
| CN110289934A (en) * | 2019-05-13 | 2019-09-27 | 湖北智途北斗空间信息技术有限公司 | A kind of data transmission coding coding/decoding method and system based on Big Dipper short message |
| CN110768710A (en) * | 2019-09-12 | 2020-02-07 | 厦门市森讯信息科技有限公司 | Method for realizing voice communication based on Beidou short message |
| CN111049569A (en) * | 2019-12-25 | 2020-04-21 | 中电科航空电子有限公司 | Airborne Beidou equipment and parameter updating method and command control system thereof |
| CN113316102A (en) * | 2021-05-26 | 2021-08-27 | 中国电子科技集团公司第五十四研究所 | Information high-reliability transmission method based on Beidou short message |
| CN113676844A (en) * | 2021-09-27 | 2021-11-19 | 北京星网船电科技有限公司 | Multipoint data communication method and system based on Beidou short message |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282402A (en) * | 2018-01-24 | 2018-07-13 | 中南大学 | Packet scattering method based on coding in data center network |
| CN108282402B (en) * | 2018-01-24 | 2020-06-09 | 中南大学 | Packet scattering method based on coding in data center network |
| CN109639679A (en) * | 2018-12-14 | 2019-04-16 | 航天恒星科技有限公司 | A kind of Tianhuangping pumped storage plant data format design method adapting to Big Dipper short message |
| CN109639679B (en) * | 2018-12-14 | 2021-08-06 | 航天恒星科技有限公司 | Space-based measurement and control data transmission method suitable for Beidou short messages |
| CN110289934A (en) * | 2019-05-13 | 2019-09-27 | 湖北智途北斗空间信息技术有限公司 | A kind of data transmission coding coding/decoding method and system based on Big Dipper short message |
| CN110768710A (en) * | 2019-09-12 | 2020-02-07 | 厦门市森讯信息科技有限公司 | Method for realizing voice communication based on Beidou short message |
| CN111049569A (en) * | 2019-12-25 | 2020-04-21 | 中电科航空电子有限公司 | Airborne Beidou equipment and parameter updating method and command control system thereof |
| CN111049569B (en) * | 2019-12-25 | 2024-02-09 | 中电科航空电子有限公司 | Airborne Beidou equipment, parameter updating method thereof and command control system |
| CN113316102A (en) * | 2021-05-26 | 2021-08-27 | 中国电子科技集团公司第五十四研究所 | Information high-reliability transmission method based on Beidou short message |
| CN113676844A (en) * | 2021-09-27 | 2021-11-19 | 北京星网船电科技有限公司 | Multipoint data communication method and system based on Beidou short message |
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Effective date of registration: 20190529 Address after: 350000 building 51, air force Housing Authority, No. 528, Sai Hung Road, Gulou District, Fuzhou, Fujian Applicant after: Fujian province pivot Communication Technology Co., Ltd. Address before: 350000 Five Floors, 1-2 Building, 16 Xingda Road, Mawei District, Fuzhou City, Fujian Province (Free Trade Test Zone) Applicant before: Fujian space flight Xing Lian Information technology Co., Ltd |
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