CN102571572A - Short message satellite communication-based data transmission method and device - Google Patents
Short message satellite communication-based data transmission method and device Download PDFInfo
- Publication number
- CN102571572A CN102571572A CN2011104486335A CN201110448633A CN102571572A CN 102571572 A CN102571572 A CN 102571572A CN 2011104486335 A CN2011104486335 A CN 2011104486335A CN 201110448633 A CN201110448633 A CN 201110448633A CN 102571572 A CN102571572 A CN 102571572A
- Authority
- CN
- China
- Prior art keywords
- data
- slice header
- data fragmentation
- packet
- compressed package
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides a short message satellite communication-based data transmission method and a short message satellite communication-based data transmission device. The method comprises the following steps of: when a data packet is received and stored into a transmission buffer queue, if the total data volume of the data packet is greater than a first data volume threshold value or transmission waiting time is greater than a first time threshold value, integrating and compressing data packets in the transmission buffer queue into a first compressed packet; if the compression ratio of the compressed packet is greater than a first preset compression ratio value, fragmenting the first compressed packet into a plurality of data fragments; and adding a fragment header to each data fragment, adding an identifier into each fragment header, setting an ending indicating bit in the fragment header of the last data fragment, and sequentially transmitting the data fragments with the fragment headers. According to the short message satellite communication-based data transmission method and the short message satellite communication-based data transmission device, a negative compression ratio phenomenon is avoided, a capacity expansion effect on the data volume of satellite communication data transmission is improved, and the effective utilization rates of bandwidth resources are increased.
Description
Technical field
The present invention relates to the communication technology, relate in particular to a kind of data transmission method and device based on the short message satellite communication.
Background technology
The static Earth's orbit of part (Geostationary Earth Orbit; Abbreviation GEO) satellite possesses the short message communication capacity; This communication capacity has two kinds of patterns: a kind of is short message communication between satellite communication terminal and the terminal, and another kind is the communication between satellite communication terminal and the short message central station.Based on the short message communication system of GEO satellite, broad covered area, applicability is strong.But because satellite communication ability and finite capacity; Every short message is limited in the hundreds of byte; And the unique user frequency that can send short message also usually be limited in several seconds/inferior in tens seconds/inferior scope, these limitations constrain based on the range of application of GEO short message data communication technology.
Based on the communication pattern of GEO short message, not only can be used to transmit the short message of text, and can be used to the transmission user binary data.Yet; This type of binary data transmission application need more bandwidth; Prior art provides a kind of method of under existing star ground condition, data amount transmitted being carried out dilatation; This method is cut into slices the two-stage system data, and the data after the section are compressed, and the data after will compressing are again transmitted through the mode of short message.Because the data volume of single short message is very limited; In practical application; The packed data that each short message is carried out producing after the data compression is often also big than original data volume, and this negative compression phenomenon not only can not be saved bandwidth, has wasted the more bandwidth resource on the contrary.
Summary of the invention
The present invention provides a kind of data transmission method and device based on the short message satellite communication, to improve the dilatation effect of satellite communications data data amount transmitted, improves the effective rate of utilization of bandwidth resources.
The present invention provides a kind of data transmission method based on the short message satellite communication, comprising:
When receiving packet and be saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the said transmission buffer queue is greater than the first data volume threshold value; Or judge the time to be sent such as the packet know in the said transmission buffer queue greater than very first time threshold value, then with the packet in the said transmission buffer queue integrate, processed compressed becomes first compressed package;
If judge that the compression ratio of knowing said first compressed package greater than the first preset compression ratio, then becomes a plurality of data fragmentations with the said first compressed package fragment process;
For each said data fragmentation adds slice header respectively, with adding in the said slice header, in the end in the slice header of a data burst end indicating bit is set in order to the sign of indication order, the data fragmentation after the interpolation slice header is sent in order.
The present invention provides a kind of data transmission method based on the short message satellite communication, comprising:
The data fragmentation that receives is saved in the receiving cache queue;
If judge to exist in the slice header of knowing the data fragmentation that receives and finish indicating bit; Then the slice header of the data fragmentation in the said receiving cache queue is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the said slice header will be removed slice header;
Said compressed package decompress(ion), deconsolidation process are become a plurality of packets.
The present invention provides a kind of data transmission device based on the short message satellite communication, comprising:
First integrates compression module; Be used for when receiving packet and be saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the said transmission buffer queue is greater than the first data volume threshold value; Or judge the time to be sent such as the packet know in the said transmission buffer queue greater than very first time threshold value, then with the packet in the said transmission buffer queue integrate, processed compressed becomes first compressed package;
The first burst module is used for if judge that the compression ratio of knowing said first compressed package greater than the first preset compression ratio, then becomes a plurality of data fragmentations with the said first compressed package fragment process;
The slice header processing module; Be used to each said data fragmentation and add slice header respectively; With adding in the said slice header in order to the sign of indication order, in the end in the slice header of a data burst end indicating bit is set, the data fragmentation after the interpolation slice header is sent in order.
The present invention provides a kind of data transmission device based on the short message satellite communication, comprising:
Receiver module is used for the data fragmentation that receives is saved in receiving cache queue;
The compressed package generation module; Be used for having the end indicating bit if judge the slice header of knowing the data fragmentation that receives; Then the slice header of the data fragmentation in the said receiving cache queue is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the said slice header will be removed slice header;
The packet generation module is used for said compressed package decompress(ion), deconsolidation process are become a plurality of packets.
Can know by technique scheme; Data transmission method and device based on the short message satellite communication provided by the invention; Be saved in the transmission buffer queue so that packet is carried out buffer memory and accumulation through receiving packet; The data in buffer amount is assessed and the data cache-time is assessed; The total amount of data of the packet in sending buffer queue is greater than the first data volume threshold value, or sends the time to be sent such as packet in the buffer queue greater than very first time during threshold value, and packet in the buffer queue is integrated with sending, processed compressed becomes first compressed package.Compression ratio to compressed package detects, and when presetting compression ratio as if compression ratio greater than first, first compressed package is carried out fragment process, for each data fragmentation that obtains increases the order of slice header with the designation data burst, and sends data fragmentation in proper order according to this.Avoided the appearance of negative compression, improved the dilatation effect of satellite communications data data amount transmitted, improved the effective rate of utilization of bandwidth resources than phenomenon.
Description of drawings
The data transmission method flow chart that Fig. 1 provides for the embodiment of the invention one based on the short message satellite communication;
The data transmission method flow chart that Fig. 2 provides for the embodiment of the invention two based on the short message satellite communication;
The data transmission method flow chart that Fig. 3 provides for the embodiment of the invention three based on the short message satellite communication;
The data transmission device structural representation that Fig. 4 provides for the embodiment of the invention four based on the short message satellite communication;
The data transmission device structural representation that Fig. 5 provides for the embodiment of the invention five based on the short message satellite communication;
The data transmission device structural representation that Fig. 6 provides for the embodiment of the invention six based on the short message satellite communication.
Embodiment
Embodiment one
The data transmission method flow chart that Fig. 1 provides for the embodiment of the invention one based on the short message satellite communication.As shown in Figure 1, the data transmission method based on the short message satellite communication that present embodiment provides specifically can be applied to the data sending processing process based on the dispensing device of short message satellite communication, and this sends the terminal can also can be the short message center for the terminal.The data transmission method based on the short message satellite communication that present embodiment provides specifically comprises:
Step S10, when receiving packet and being saved in when sending in the buffer queue; Know that the total amount of data of sending the packet in the buffer queue is greater than the first data volume threshold value if judge; Or judge and to know the time to be sent such as the packet that sends in the buffer queue that packet integration, the processed compressed that then will send in the buffer queue become first compressed package greater than very first time threshold value;
Packet specifically can be the data transmission applications request according to application layer, and the application data bag that receives will receive packet and be saved in the transmission buffer queue so that packet is carried out buffer memory and accumulation.Times to be sent such as the total amount of data of sending all packets in the buffer queue and these packets are judged; Particularly; With the big or small addition of sending all packets in the buffer queue; With predefined data volume low valve valve promptly the first data volume threshold value compare, will be that very first time threshold value compares with the low threshold value of Preset Time apart from the interval of the time of sending last time simultaneously, as if the total amount of data of packet greater than the first data volume threshold value; Or etc. time to be sent greater than very first time threshold value, will send then that packet in the buffer queue is integrated, processed compressed becomes first compressed package.Particularly, can all packets that send in the buffer queue be spliced, be integrated into a continuous data block.On the basis of integrating, adopt preset compression algorithm that data are carried out processed compressed.
Step S20, if judge that the compression ratio know first compressed package greater than the first preset compression ratio, then becomes a plurality of data fragmentations with the first compressed package fragment process;
If the compression ratio of first compressed package explains that greater than the first preset compression ratio compression effectiveness to first compressed package reaches desired value, and the negative compression phenomenon that cause bigger than initial data with the compressed package after avoiding compressing.The first compressed package fragment process is become a plurality of data fragmentations.Particularly; Big young pathbreaker first compressed package according to maximum short message size and short message is cut into a plurality of fragments to obtain a plurality of sections; Remove last section; All the other slice size all are the maximum of short message data volume, if the size of last section is less than maximum short message size, then with 0 supply short message largest amount.With this first compressed package is carried out the big or small identical of data fragmentation that fragment process obtains.
Step S30, add slice header respectively,, in the end in the slice header of a data burst end indicating bit is set, the data fragmentation that adds slice header is sent in order adding in the slice header in order to the sign of indication order for each data fragmentation.
Before each data fragmentation, increase a slice header, with adding in the slice header in order to the sign of indication order, sign specifically can be 1 to n; Wherein n be natural number and, n＞1 is for last data fragmentation; The end indicating bit is set in its slice header, should the combination end-of-packet with indication.The highest order of slice header that specifically can last data fragmentation is set to 1, and the highest order of the slice header of other data fragmentations is 0.The data fragmentation that adds after the slice header is sent in order, be about to add after the slice header data fragmentation according to from 1 to n send to satellite smoothly.
The data transmission method that present embodiment provides based on the short message satellite communication; Be saved in the transmission buffer queue so that packet is carried out buffer memory and accumulation through receiving packet; The data in buffer amount is assessed and the data cache-time is assessed; The total amount of data of the packet in sending buffer queue is greater than the first data volume threshold value; Or time to be sent such as the packet in the transmission buffer queue greater than very first time during threshold value, packet in the buffer queue is integrated with sending, processed compressed becomes first compressed package.Compression ratio to compressed package detects, and when presetting compression ratio as if compression ratio greater than first, first compressed package is carried out fragment process, for each data fragmentation that obtains increases the order of slice header with the designation data burst, and sends data fragmentation in proper order according to this.Avoided the appearance of negative compression, improved the dilatation effect of satellite communications data data amount transmitted, improved the effective rate of utilization of bandwidth resources than phenomenon.
Embodiment two
The data transmission method flow chart that Fig. 2 provides for the embodiment of the invention two based on the short message satellite communication.As shown in Figure 2; What present embodiment provided becomes after first compressed package based on the data transmission method of short message satellite communication the packet in the buffer queue is integrated in embodiment one, processed compressed; And add respectively before the slice header for each data fragmentation, specifically can also comprise the steps:
Step S40, know that the compression ratio of compressed package is not more than preset compression ratio if judge; Then continue the packet that receives is saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the buffer queue is greater than the second data volume threshold value; Or time to be sent such as the packet in the buffer queue is greater than second time threshold; Then the integration of the packet in the buffer queue, processed compressed are become second compressed package, wherein the second data volume threshold value is greater than the first data volume threshold value, and second time threshold is greater than very first time threshold value;
If the compression ratio of compressed package is not more than preset compression ratio, explain that then the effect of first compressed package does not reach desired value, in addition also bigger than initial data, promptly produced the negative compression situation.Then abandon first compressed package, continue to receive packet, and be saved in the packet that receives in the transmission buffer queue.The total amount of data of the packet in sending buffer queue is the second data volume threshold value greater than preset data amount high threshold; Or etc. time to be sent greater than i.e. second time threshold of the low threshold value of time Preset Time; Again to the packet in the buffer queue integrate, processed compressed, to form second compressed package.
Step S50, if judge that the compression ratio know second compressed package greater than the second preset compression ratio, then becomes a plurality of data fragmentations with the second compressed package fragment process.
Further the compression ratio to second compressed package detects, if the compression ratio of second compressed package then becomes a plurality of data fragmentations with the second compressed package fragment process greater than the second preset compression ratio.The second preset compression ratio specifically can equate with the first preset compression ratio.
If this moment, the compression ratio of the second compressed package preset compression ratio of no show second that remains unchanged, perhaps second compressed package is also bigger than initial data, and it is smaller that then the total amount of data of the packet in the buffer queue is sent in explanation, and do not receive packet for a long time in a large number.Then can the packet that send in the buffer queue be integrated formation combination bag, but not carry out processed compressed, directly will make up bag and carry out burst, be implemented as the step that each data fragmentation adds slice header respectively again to obtain data fragmentation.
In the present embodiment, the first compressed package fragment process is become after a plurality of data fragmentations, and adds respectively before the slice header, specifically can also comprise for each data fragmentation:
Step S60, each data fragmentation step-by-step XOR handled generate redundant slices;
Specifically can successively the content of data fragmentation be calculated according to the step-by-step xor operation, obtain a redundant slices according to the order of data fragmentation.
Correspondingly, step S30 is for each data fragmentation adds slice header respectively; With adding in the slice header in order to the sign of indication order; In the end in the slice header of a data burst end indicating bit is set, the data fragmentation after the interpolation slice header is sent in order, specifically can comprise the steps:
Step S301, redundant slices and each data fragmentation are added slice header respectively;
Step S302, with adding in the slice header in order to the sign of indication order, in the end in the slice header of a data burst end indicating bit is set, wherein the order of redundant slices is prior to each data fragmentation;
Particularly, the sign in the slice header of redundant slices can be 0, and the sign in the slice header of data fragmentation is respectively 1 to n, wherein n be natural number and, n＞1.
Step S303, the redundant slices and the data fragmentation that add after the slice header are sent in order.
With add after the slice header redundant slices and data fragmentation according to from 0,1 to n send to satellite smoothly.
Because the satellite communication mode based on short message adopts wireless microwave to send data, possibly receive various meteorological conditions, all-environment influence such as ionosphere, short message is interfered in transmission course and loses, and perhaps in transmission course, makes a mistake.When receiving data, the short message of mistake can be received equipment and detect through redundancy check code, thereby abandons.Redundant slices through generating according to data fragmentation can recover the data fragmentation of losing through data fragmentation and redundant slices when having one to lose when the data fragmentation that receives, improved stability of data transmission.
Embodiment three
The data transmission method flow chart that Fig. 3 provides for the embodiment of the invention three based on the short message satellite communication.As shown in Figure 3, the data transmission method based on the short message satellite communication that present embodiment provides specifically can be applied to the Data Receiving processing procedure based on the receiving system of short message satellite communication, and this sends and stops and can also can be the short message center for the terminal.The data transmission method based on the short message satellite communication that present embodiment provides specifically comprises:
Step R10, the data fragmentation that receives is saved in the receiving cache queue;
Particularly, receive the data fragmentation of satellite transmission, and the data fragmentation that receives is saved in the receiving cache queue, after waiting receiving whole data fragmentations, carry out subsequent treatment.
Step R20, finish indicating bit if judge to exist in the slice header know the data fragmentation that receives; Then the slice header of the data fragmentation in the receiving cache queue is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the slice header will be removed slice header;
Finish indicating bit if exist in the slice header of the data fragmentation that receives, explain that this data fragmentation is last data fragmentation, then can be with being combined into compressed package after the taking-up of the data fragmentation in the receiving cache queue slice header.
Step R30, compressed package decompress(ion), deconsolidation process are become a plurality of packets.
Specifically can be earlier the compressed package decompression processing be become the combination bag, be split as a plurality of packets will make up the header packet information that wraps according to each legacy data bag.When the data volume of the compressed package that sends when transmit leg was not more than the data volume sum of a plurality of packets, the data volume sum that the recipient splits a plurality of packets that obtain after with the compressed package decompress(ion) was not less than the data volume of compressed package.
The data transmission method based on the short message satellite communication that present embodiment provides after receiving the total data burst, is combined into compressed package after data fragmentation taken out slice header, and compressed package decompress(ion), deconsolidation process are become a plurality of packets.The data handling procedure that can cooperate transmit leg; When the data volume of the compressed package that generates when transmit leg is not more than the data volume sum of a plurality of packets; Explain not have the negative compression phenomenon, improved the dilatation effect of satellite communications data data amount transmitted, improved the effective rate of utilization of bandwidth resources.
In the present embodiment, step R10 is saved in the data fragmentation that receives in the receiving cache queue, specifically can comprise:
Redundant slices that receives and data fragmentation are saved in the receiving cache queue;
If also comprise redundant slices in the data of satellite transmission, then redundant slices that receives and data fragmentation all be saved in the receiving cache queue.
Correspondingly; Step R20; If judge to exist in the slice header of knowing the data fragmentation that receives and finish indicating bit; Then the slice header of the data fragmentation in the receiving cache queue is removed, and be combined into compressed package, specifically can comprise the steps: according to the data fragmentation that the order of the sign in the slice header will be removed slice header
If judge to exist in the slice header of knowing the data fragmentation that receives and finish indicating bit; The continuity of the sign in the slice header of the data fragmentation that receives of inspection then; If knowing, judgement loses a data burst; Then generate the data fragmentation of losing, the slice header of each data fragmentation is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the slice header will be removed slice header according to the data fragmentation in the receiving cache queue and redundant slices.
Further check the continuity of the data fragmentation that receives, can know whether data fragmentation is lost in transmission course.If in data transmission procedure, lost a data burst, then can handle the data fragmentation of losing to recover according to redundant slices and remaining data fragmentation step-by-step XOR.
In the DRP data reception process of reality, can basis the burst that receives be handled with the transfer of data rule of the agreement of transmit leg.If the sign of transmit leg redundant slices is set to 0, the sign of data fragmentation is set to 1 to n according to order, can judge earlier then whether the sign in the slice header of the burst that is received is 0.If 0, explain that then the burst that receives is a redundant slices.Judge whether to receive last data fragmentation of previous combination bag.If do not receive last data fragmentation of previous combination bag, explain that then this last data fragmentation loses.All bursts in the previous combination bag (comprising data fragmentation and redundant slices) are carried out the step-by-step XOR handle, recover the burst that last is lost.Previous combination bag is complete, just can carry out ensuing the data burst having been carried out combined treatment.Particularly, each data fragmentation removed slice header combination after, can also judge whether the data after this combination pass through processed compressed earlier, if without the overcompression processing then can directly the data after making up be split into a plurality of packets.
If previous combination bag is complete, then continue to receive other remaining data fragmentation, till last data fragmentation reception of receiving this combination bag finishes.Check according to the sign in the slice header of data fragmentation whether the data fragmentation of losing is arranged.Whether judge the burst number of losing more than one, if there are a plurality of bursts of losing then to abandon all bursts related with this data splitting bag.If lost a data burst, then can carry out the recovery of data fragmentation according to the restoration methods of above-mentioned data fragmentation.If what lose is redundant slices, then to the not influence of further data processing.
Embodiment four
The data transmission device structural representation that Fig. 4 provides for the embodiment of the invention four based on the short message satellite communication.As shown in Figure 4; Each step based on the data transmission method of short message satellite communication that the data transmission device based on the short message satellite communication that present embodiment provides can realize specifically that any embodiment of the present invention provides is applied to that data send, this repeats no more.The data transmission device based on the short message satellite communication that present embodiment provides can be integrated in terminal or the short message in the heart, also can be provided with separately, does not exceed with present embodiment.
The data transmission device based on the short message satellite communication that present embodiment provides comprises that specifically first integrates compression module 11, the first burst module 12 and slice header processing module 13.First integrates compression module 11 is used for when receiving packet and be saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the buffer queue is greater than the first data volume threshold value; Or judge the time to be sent such as the packet know in the buffer queue greater than very first time threshold value, then with the packet in the buffer queue integrate, processed compressed becomes first compressed package.The first burst module 12 is used for if judge that the compression ratio of knowing first compressed package greater than the first preset compression ratio, then becomes a plurality of data fragmentations with the first compressed package fragment process.Slice header processing module 13 is used to each data fragmentation and adds slice header respectively; With adding in the slice header in order to the sign of indication order; In the end in the slice header of a data burst end indicating bit is set, the data fragmentation after the interpolation slice header is sent in order.
The data transmission device that present embodiment provides based on the short message satellite communication; To receive packet through being provided with of the first integration compression module 11 is saved in the transmission buffer queue so that packet is carried out buffer memory and accumulation; The data in buffer amount is assessed and the data cache-time is assessed; The total amount of data of the packet in sending buffer queue is greater than the first data volume threshold value; Or time to be sent such as the packet in the transmission buffer queue greater than very first time during threshold value, packet in the buffer queue is integrated with sending, processed compressed becomes first compressed package.The compression ratio of 12 pairs of compressed packages of the first burst module detects, and when presetting compression ratio as if compression ratio greater than first, first compressed package is carried out fragment process.Slice header processing module 13 increases the order of slice header with the designation data burst for each data fragmentation that obtains, and sends data fragmentation in proper order according to this.Avoided the appearance of negative compression, improved the dilatation effect of satellite communications data data amount transmitted, improved the effective rate of utilization of bandwidth resources than phenomenon.
Embodiment five
The data transmission device structural representation that Fig. 5 provides for the embodiment of the invention five based on the short message satellite communication.Such as Fig. 5 knowledge, in the present embodiment, should can also comprise specifically that second integrated the compression module 14 and the second burst module 15 based on the data transmission device of short message satellite communication.Second integrates compression module 14 is used for as if judge knowing that the compression ratio of compressed package is not more than preset compression ratio; Then continue the packet that receives is saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the buffer queue is greater than the second data volume threshold value; Or time to be sent such as the packet in the buffer queue greater than second time threshold, then with the packet in the buffer queue integrate, processed compressed becomes second compressed package.The second burst module 15 is used for if judge that the compression ratio of knowing second compressed package is greater than the second preset compression ratio; Then the second compressed package fragment process is become a plurality of data fragmentations; Wherein the second data volume threshold value is greater than the first data volume threshold value, and second time threshold is greater than very first time threshold value.
In the present embodiment, should also comprise to comprise redundant slices generation module 16 that redundant slices generation module 16 was used for each data fragmentation step-by-step XOR is handled the generation redundant slices based on the data transmission device of short message satellite communication.Correspondingly, slice header processing module 13 comprises slice header adding device 131, sign adding device 132 and transmitting element 133.Slice header adding device 131 is used for redundant slices and each data fragmentation are added slice header respectively.Sign adding device 132 is used in the end in the slice header of a data burst end indicating bit being set with adding slice header in order to the sign of indication order, and wherein the order of redundant slices is prior to each data fragmentation.Transmitting element 133 is used for redundant slices and data fragmentation after the interpolation slice header are sent in order.
Embodiment six
The data transmission device structural representation that Fig. 6 provides for the embodiment of the invention six based on the short message satellite communication.As shown in Figure 6; The data transmission device based on the short message satellite communication that present embodiment provides can realize specifically that any embodiment of the present invention provides is applied to each step based on the data transmission method of short message satellite communication of Data Receiving, and this repeats no more.The data transmission device based on the short message satellite communication that present embodiment provides can be integrated in terminal or the short message in the heart, also can be provided with separately, does not exceed with present embodiment.
The data transmission device based on the short message satellite communication that present embodiment provides specifically comprises receiver module 21, compressed package generation module 22 and packet generation module 23.Receiver module 21 is used for the data fragmentation that receives is saved in receiving cache queue.Compressed package generation module 22 is used for having the end indicating bit if judge the slice header of knowing the data fragmentation that receives; Then the slice header of the data fragmentation in the receiving cache queue is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the slice header will be removed slice header.Packet generation module 23 is used for compressed package decompress(ion), deconsolidation process are become packet.
The data transmission device based on the short message satellite communication that present embodiment provides after receiving the total data burst, is combined into compressed package after data fragmentation taken out slice header, and compressed package decompress(ion), deconsolidation process are become a plurality of packets.Because the data volume of compressed package is not more than the data volume sum of a plurality of packets, explains not have the negative compression phenomenon, has improved the dilatation effect of satellite communications data data amount transmitted, has improved the effective rate of utilization of bandwidth resources.
In the present embodiment, receiver module 21 can also be used for redundant slices that receives and data fragmentation are saved in receiving cache queue.Correspondingly; Compressed package generation module 22 also is used for having the end indicating bit if judge the slice header of knowing the data fragmentation that receives; The continuity of the sign in the slice header of the data fragmentation that receives of inspection then is if judge and know and lose a data burst, then according to the data fragmentation that generation is lost with redundant slices of the data fragmentation in the receiving cache queue; The slice header of each data fragmentation is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the slice header will be removed slice header.
Data transmission method and device that the embodiment of the invention provides based on the short message satellite communication; Technical based on the short message satellite transmits; Can Efficient and Flexible transmit application data; Transmittability to data has been carried out certain dilatation, and can be not more than at the data fragmentation number that each transmission is lost and can carry out data automatically under one the situation and recover, and has guaranteed transmission reliability.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. the data transmission method based on the short message satellite communication is characterized in that, comprising:
When receiving packet and be saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the said transmission buffer queue is greater than the first data volume threshold value; Or judge the time to be sent such as the packet know in the said transmission buffer queue greater than very first time threshold value, then with the packet in the said transmission buffer queue integrate, processed compressed becomes first compressed package;
If judge that the compression ratio of knowing said first compressed package greater than the first preset compression ratio, then becomes a plurality of data fragmentations with the said first compressed package fragment process;
For each said data fragmentation adds slice header respectively, with adding in the said slice header, in the end in the slice header of a data burst end indicating bit is set in order to the sign of indication order, the data fragmentation after the interpolation slice header is sent in order.
2. the data transmission method based on the short message satellite communication according to claim 1; It is characterized in that; Said with the packet in the said transmission buffer queue integrate, processed compressed becomes after first compressed package, saidly adds respectively before the slice header for each said data fragmentation, also comprise:
If judge and know that the compression ratio of said first compressed package is not more than said preset compression ratio; Then continue the packet that receives is saved in the said transmission buffer queue; If judge that the total amount of data of knowing the packet in the said buffer queue is greater than the second data volume threshold value; Or time to be sent such as the packet in the said transmission buffer queue is greater than second time threshold; Then the integration of the packet in the said transmission buffer queue, processed compressed are become second compressed package, the wherein said second data volume threshold value is greater than the said first data volume threshold value, and said second time threshold is greater than said very first time threshold value;
If judge that the compression ratio of knowing said second compressed package greater than the second preset compression ratio, then becomes a plurality of data fragmentations with the said second compressed package fragment process.
3. the data transmission method based on the short message satellite communication according to claim 1 is characterized in that, said the said first compressed package fragment process is become after a plurality of data fragmentations, saidly adds respectively before the slice header for each said data fragmentation, also comprises:
Each said data fragmentation step-by-step XOR is handled the generation redundant slices;
Correspondingly; Saidly add slice header respectively,, in the end in the slice header of a data burst end indicating bit is set adding in the said slice header in order to the sign of indication order for each said data fragmentation; Data fragmentation after the interpolation slice header is sent in order, comprising:
Said redundant slices and each said data fragmentation are added slice header respectively;
With adding in the said slice header in order to the sign of indication order, in the end in the slice header of a data burst end indicating bit is set, the order of wherein said redundant slices is prior to each said data fragmentation;
Redundant slices and data fragmentation after the interpolation slice header are sent in order.
4. the data transmission method based on the short message satellite communication is characterized in that, comprising:
The data fragmentation that receives is saved in the receiving cache queue;
If judge to exist in the slice header of knowing the data fragmentation that receives and finish indicating bit; Then the slice header of the data fragmentation in the said receiving cache queue is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the said slice header will be removed slice header;
Said compressed package decompress(ion), deconsolidation process are become a plurality of packets.
5. the data transmission method based on the short message satellite communication according to claim 4 is characterized in that, said the data fragmentation that receives is saved in the receiving cache queue, comprising:
Redundant slices that receives and said data fragmentation are saved in the said receiving cache queue;
Correspondingly; Said if judge that existence finishes indicating bit in the slice header of knowing the data fragmentation that receives; Then the slice header of the data fragmentation in the said receiving cache queue is removed, and is combined into compressed package, comprising according to the data fragmentation that the order of the sign in the said slice header will be removed slice header:
If judge in the slice header of knowing the data fragmentation that receives and have said end indicating bit; The continuity of the sign in the slice header of the data fragmentation that receives of inspection then; If knowing, judgement loses a data burst; Then generate the data fragmentation of losing, the slice header of each said data fragmentation is removed, and be combined into said compressed package according to the data fragmentation that the order of the sign in the said slice header will be removed slice header according to the data fragmentation in the said receiving cache queue and redundant slices.
6. the data transmission device based on the short message satellite communication is characterized in that, comprising:
First integrates compression module; Be used for when receiving packet and be saved in the transmission buffer queue; If judge that the total amount of data of knowing the packet in the said transmission buffer queue is greater than the first data volume threshold value; Or judge the time to be sent such as the packet know in the said transmission buffer queue greater than very first time threshold value, then with the packet in the said transmission buffer queue integrate, processed compressed becomes first compressed package;
The first burst module is used for if judge that the compression ratio of knowing said first compressed package greater than the first preset compression ratio, then becomes a plurality of data fragmentations with the said first compressed package fragment process;
The slice header processing module; Be used to each said data fragmentation and add slice header respectively; With adding in the said slice header in order to the sign of indication order, in the end in the slice header of a data burst end indicating bit is set, the data fragmentation after the interpolation slice header is sent in order.
7. the data transmission device based on the short message satellite communication according to claim 6 is characterized in that, also comprises:
Second integrates compression module; Be used for knowing that the compression ratio of said first compressed package is not more than said preset compression ratio if judge; Then continue the packet that receives is saved in the said transmission buffer queue; If judge the total amount of data know the packet in the said transmission buffer queue greater than the second data volume threshold value, or time to be sent such as the packet in the said transmission buffer queue greater than second time threshold, then with the packet in the said transmission buffer queue integrate, processed compressed becomes second compressed package; The wherein said second data volume threshold value is greater than the said first data volume threshold value, and said second time threshold is greater than said very first time threshold value;
The second burst module is used for if judge that the compression ratio of knowing said second compressed package greater than the second preset compression ratio, then becomes a plurality of data fragmentations with the said second compressed package fragment process.
8. the data transmission device based on the short message satellite communication according to claim 6 is characterized in that, also comprises:
The redundant slices generation module is used for each said data fragmentation step-by-step XOR is handled the generation redundant slices;
Correspondingly, said slice header processing module comprises:
The slice header adding device is used for said redundant slices and each said data fragmentation are added slice header respectively;
The sign adding device is used in the end in the slice header of a data burst end indicating bit being set with adding said slice header in order to the sign of indication order, and the order of wherein said redundant slices is prior to each said data fragmentation;
Transmitting element is used for redundant slices and data fragmentation after the interpolation slice header are sent in order.
9. the data transmission device based on the short message satellite communication is characterized in that, comprising:
Receiver module is used for the data fragmentation that receives is saved in receiving cache queue;
The compressed package generation module; Be used for having the end indicating bit if judge the slice header of knowing the data fragmentation that receives; Then the slice header of the data fragmentation in the said receiving cache queue is removed, and be combined into compressed package according to the data fragmentation that the order of the sign in the said slice header will be removed slice header;
The packet generation module is used for said compressed package decompress(ion), deconsolidation process are become a plurality of packets.
10. the data transmission device based on the short message satellite communication according to claim 6 is characterized in that: said receiver module also is used for redundant slices that receives and said data fragmentation are saved in said receiving cache queue;
Correspondingly; Said compressed package generation module also is used for knowing that there is said end indicating bit in the slice header of the data fragmentation that receives if judge; The continuity of the sign in the slice header of the data fragmentation that receives of inspection then; If knowing, judgement loses a data burst; Then generate the data fragmentation of losing, the slice header of each said data fragmentation is removed, and be combined into said compressed package according to the data fragmentation that the order of the sign in the said slice header will be removed slice header according to the data fragmentation in the said receiving cache queue and redundant slices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104486335A CN102571572A (en) | 2011-12-28 | 2011-12-28 | Short message satellite communication-based data transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104486335A CN102571572A (en) | 2011-12-28 | 2011-12-28 | Short message satellite communication-based data transmission method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102571572A true CN102571572A (en) | 2012-07-11 |
Family
ID=46416073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104486335A Pending CN102571572A (en) | 2011-12-28 | 2011-12-28 | Short message satellite communication-based data transmission method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102571572A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891730A (en) * | 2012-09-04 | 2013-01-23 | 中国人民解放军国防科学技术大学 | Method and device for encoding satellite short message based on binary coded decimal (BCD) code |
| CN103078812A (en) * | 2013-02-01 | 2013-05-01 | 北京傲天动联技术股份有限公司 | Method and equipment for forwarding data |
| CN103795655A (en) * | 2012-10-30 | 2014-05-14 | 中兴通讯股份有限公司 | Data transmission method and data transmission device |
| CN103873438A (en) * | 2012-12-12 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Compression packet uploading and duplication-removing system and method |
| CN103888452A (en) * | 2014-03-10 | 2014-06-25 | 百度在线网络技术（北京）有限公司 | Storage method and device for message compression |
| CN104219178A (en) * | 2013-06-04 | 2014-12-17 | 中兴通讯股份有限公司 | Openflow-based control message processing method, Openflow-based control message transmitting device, Openflow-based control message receiving device and Openflow-based control message processing system |
| CN104883670A (en) * | 2015-04-23 | 2015-09-02 | 叶宁 | Internet system and data transmission method |
| CN106101218A (en) * | 2016-06-12 | 2016-11-09 | 乐视控股（北京）有限公司 | The report method of terminal data and device |
| CN106453160A (en) * | 2016-10-11 | 2017-02-22 | 福建星海通信科技有限公司 | Beidou data transmission method and system |
| CN107294878A (en) * | 2016-04-13 | 2017-10-24 | 中国移动通信有限公司研究院 | Data transmission method, system and relevant device |
| CN107707599A (en) * | 2017-05-26 | 2018-02-16 | 语祯物联科技（上海）有限公司 | A kind of method and device of Internet of Things communication equipment transmission file |
| CN108075820A (en) * | 2016-11-18 | 2018-05-25 | 杭州优能通信系统有限公司 | A kind of method for improving broadcasting-satellite channel fragment data transmission reliability |
| CN108306715A (en) * | 2017-01-11 | 2018-07-20 | 深圳市首欣通达科技有限公司 | A kind of method and system carrying out long file transmission based on Big Dipper generation satellite short message communication function |
| CN105228137B (en) * | 2014-05-26 | 2018-10-30 | 普天信息技术有限公司 | A kind of transmission method of authorization message |
| CN109309563A (en) * | 2017-07-27 | 2019-02-05 | 科大国盾量子技术股份有限公司 | A kind of correction processing method and system of information |
| CN109561405A (en) * | 2018-12-27 | 2019-04-02 | 南京控维通信科技有限公司 | Towards satellite emergency communication system and its high speed short message transmission method |
| WO2019153482A1 (en) * | 2018-02-07 | 2019-08-15 | 平安科技（深圳）有限公司 | Method for generating data packets in anti-money laundering operation, storage medium and server |
| CN110289902A (en) * | 2018-12-29 | 2019-09-27 | 中国科学院软件研究所 | The more new system of software on a kind of star |
| CN110290099A (en) * | 2018-03-19 | 2019-09-27 | 海能达通信股份有限公司 | Data transmission method, communication equipment and the device with store function |
| CN111510155A (en) * | 2020-04-17 | 2020-08-07 | 深圳市科思科技股份有限公司 | Data compression method, data decompression method, electronic device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816182A (en) * | 2005-02-02 | 2006-08-09 | 华为技术有限公司 | Method of transmitting data to base station by base station controller |
| CN101237419A (en) * | 2008-03-07 | 2008-08-06 | 北京航管科技有限公司 | Packet header compression method in air-space communication of aviation telecommunication network |
| CN101286945A (en) * | 2008-05-22 | 2008-10-15 | 北京星网锐捷网络技术有限公司 | Method and apparatus for processing of data fragmentation |
| CN102255800A (en) * | 2011-06-24 | 2011-11-23 | 中国人民解放军国防科学技术大学 | Method for converting data format between IP (Internet Protocol) data packages on CAN (Control Area Network) bus and CAN messages |
-
2011
- 2011-12-28 CN CN2011104486335A patent/CN102571572A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816182A (en) * | 2005-02-02 | 2006-08-09 | 华为技术有限公司 | Method of transmitting data to base station by base station controller |
| CN101237419A (en) * | 2008-03-07 | 2008-08-06 | 北京航管科技有限公司 | Packet header compression method in air-space communication of aviation telecommunication network |
| CN101286945A (en) * | 2008-05-22 | 2008-10-15 | 北京星网锐捷网络技术有限公司 | Method and apparatus for processing of data fragmentation |
| CN102255800A (en) * | 2011-06-24 | 2011-11-23 | 中国人民解放军国防科学技术大学 | Method for converting data format between IP (Internet Protocol) data packages on CAN (Control Area Network) bus and CAN messages |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891730B (en) * | 2012-09-04 | 2015-04-22 | 中国人民解放军国防科学技术大学 | Method and device for encoding satellite short message based on binary coded decimal (BCD) code |
| CN102891730A (en) * | 2012-09-04 | 2013-01-23 | 中国人民解放军国防科学技术大学 | Method and device for encoding satellite short message based on binary coded decimal (BCD) code |
| CN103795655A (en) * | 2012-10-30 | 2014-05-14 | 中兴通讯股份有限公司 | Data transmission method and data transmission device |
| CN103873438A (en) * | 2012-12-12 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Compression packet uploading and duplication-removing system and method |
| CN103078812A (en) * | 2013-02-01 | 2013-05-01 | 北京傲天动联技术股份有限公司 | Method and equipment for forwarding data |
| CN103078812B (en) * | 2013-02-01 | 2015-10-21 | 北京傲天动联技术股份有限公司 | Data forwarding method and equipment |
| CN104219178A (en) * | 2013-06-04 | 2014-12-17 | 中兴通讯股份有限公司 | Openflow-based control message processing method, Openflow-based control message transmitting device, Openflow-based control message receiving device and Openflow-based control message processing system |
| CN103888452B (en) * | 2014-03-10 | 2017-04-05 | 百度在线网络技术（北京）有限公司 | For the order-preserving method and device of message compression |
| CN103888452A (en) * | 2014-03-10 | 2014-06-25 | 百度在线网络技术（北京）有限公司 | Storage method and device for message compression |
| CN105228137B (en) * | 2014-05-26 | 2018-10-30 | 普天信息技术有限公司 | A kind of transmission method of authorization message |
| CN104883670A (en) * | 2015-04-23 | 2015-09-02 | 叶宁 | Internet system and data transmission method |
| CN107294878A (en) * | 2016-04-13 | 2017-10-24 | 中国移动通信有限公司研究院 | Data transmission method, system and relevant device |
| CN106101218A (en) * | 2016-06-12 | 2016-11-09 | 乐视控股（北京）有限公司 | The report method of terminal data and device |
| CN106453160A (en) * | 2016-10-11 | 2017-02-22 | 福建星海通信科技有限公司 | Beidou data transmission method and system |
| CN108075820A (en) * | 2016-11-18 | 2018-05-25 | 杭州优能通信系统有限公司 | A kind of method for improving broadcasting-satellite channel fragment data transmission reliability |
| CN108306715A (en) * | 2017-01-11 | 2018-07-20 | 深圳市首欣通达科技有限公司 | A kind of method and system carrying out long file transmission based on Big Dipper generation satellite short message communication function |
| CN107707599A (en) * | 2017-05-26 | 2018-02-16 | 语祯物联科技（上海）有限公司 | A kind of method and device of Internet of Things communication equipment transmission file |
| CN109309563A (en) * | 2017-07-27 | 2019-02-05 | 科大国盾量子技术股份有限公司 | A kind of correction processing method and system of information |
| CN109309563B (en) * | 2017-07-27 | 2021-12-24 | 科大国盾量子技术股份有限公司 | Information error correction processing method and system |
| WO2019153482A1 (en) * | 2018-02-07 | 2019-08-15 | 平安科技（深圳）有限公司 | Method for generating data packets in anti-money laundering operation, storage medium and server |
| CN110290099A (en) * | 2018-03-19 | 2019-09-27 | 海能达通信股份有限公司 | Data transmission method, communication equipment and the device with store function |
| CN109561405A (en) * | 2018-12-27 | 2019-04-02 | 南京控维通信科技有限公司 | Towards satellite emergency communication system and its high speed short message transmission method |
| CN110289902A (en) * | 2018-12-29 | 2019-09-27 | 中国科学院软件研究所 | The more new system of software on a kind of star |
| CN111510155A (en) * | 2020-04-17 | 2020-08-07 | 深圳市科思科技股份有限公司 | Data compression method, data decompression method, electronic device and storage medium |
| CN111510155B (en) * | 2020-04-17 | 2023-09-26 | 深圳市科思科技股份有限公司 | Data compression method, data decompression method, electronic device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102571572A (en) | Short message satellite communication-based data transmission method and device | |
| CN109639679B (en) | Space-based measurement and control data transmission method suitable for Beidou short messages | |
| US8542706B2 (en) | Method and apparatus related to packet fragmentation and reconstruction | |
| KR101405927B1 (en) | Method of coommunication in mobile communication system | |
| CN110073643A (en) | Upstream data compresses transaction flow | |
| US8228911B2 (en) | Enhanced data link communication over iridium | |
| CN108347295B (en) | Data transmission method and device | |
| CN103858370A (en) | Apparatus and method for transmitting/receiving forward error correction packet in mobile communication system | |
| CN101707616B (en) | Method and device for compressing and decompressing user datagram protocol data packet | |
| CA2263277A1 (en) | Carrier activation for data communications | |
| WO2005013576A1 (en) | Radio packet communication method | |
| CN102984090A (en) | Jitter buffer | |
| CN102469511A (en) | Packet data convergence protocol layer handling data method and system | |
| CN107209713B (en) | Method and system for on-demand file repair | |
| Du et al. | RLT code based handshake-free reliable MAC protocol for underwater sensor networks | |
| CN106105076B (en) | The method and apparatus that grouping is generated and restored in broadcast and/or communication system | |
| US10523790B2 (en) | System and method of header compression for online network codes | |
| CN105959085B (en) | Short wave communication transmitted in both directions mode based on fountain codes | |
| Leung et al. | Forward error correction for an ARQ scheme | |
| JP7228797B2 (en) | Receiving device and receiving method | |
| KR20100081902A (en) | Method for transmitting and receiving data using random linear coding | |
| CN104168053A (en) | LLC order-arranging processing method based on multi-relay transmission condition | |
| EP3207653B1 (en) | System and method for low-payload acknowledgment | |
| WO2014065643A1 (en) | A method for managing a software defined radio device installed on a small satellite | |
| CN100452713C (en) | Network data concast transmission method based on distributed coding storage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |