CN110429963A - Multi-path data transmission method on star - Google Patents
Multi-path data transmission method on star Download PDFInfo
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- CN110429963A CN110429963A CN201910580690.5A CN201910580690A CN110429963A CN 110429963 A CN110429963 A CN 110429963A CN 201910580690 A CN201910580690 A CN 201910580690A CN 110429963 A CN110429963 A CN 110429963A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
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Abstract
Multi-path data transmission method on a kind of star disclosed by the invention, it is desirable to provide one kind can reduce multi-channel data transmission interference, improve the data transmission method of multichannel data simultaneous transmission receptivity.The technical scheme is that: a circuit-switched data originally is weighted addition by multi-path transmission processor, or after rearranging transmission sequence and reprocessing, it is transmitted on crossed dispersion to multiple and different transmission paths, multiple transmission paths are formed using different frequencies, polarization direction, wave beam etc., are received by the data of multi-path transmission by ground receiving equipment.The present invention, at multiple transmission paths over the ground, is flexibly carried out data transmission over a plurality of paths by dwi hastasana on star, improves total data transmission performance, reduce interference problem when multichannel data simultaneous transmission.
Description
Technical field
The present invention relates to a kind of satellite technologies that data are transmitted over the ground.
Background technique
Satellite telemetering data is that ground understands the unique channel of working condition and health status on star.Common satellite is distant
Measured data down transmission method is mainly acquired the telemetry parameter of each subsystem by Star Service central computer by bus on star, is carried out
Packing processing, forms general telemetry format, after being modulated into dpsk signal, by passing under observing and controlling channel.Due to by spaceborne
The limitation of calculator memory capacity, can not save a large amount of delayed telemetry data, therefore satellite overseas a large amount of telemetry intelligence (TELINT) ground
It can not just obtain, face the monitoring and reception of satellitosis with influencing.The services such as data transmission are data processings
Pillar.In recent years, access technology development is swift and violent, and many terminals all have the interface of multiple communications, and the covering of heterogeneous network is got over
Carry out bigger, the alternative raising of communication interface.And internet traffic presented explosive growth, more and more business are all
The great demand for high bandwidth is shown, such as HD video streaming media service.Under such situation, traditional list used
One path Transmission Control Protocol may be unable to satisfy the high bandwidth requirements of business, cannot utilize the advantage of heterogeneous network covering.With mutual
The application development of networking, demand of the user to bandwidth increasingly increase.Meanwhile along with the development of broadband access technology, terminal can
There is a plurality of network linking simultaneously, however when satellite communication has topological dynamic change, multi-hop connection, inter satellite link extend,
The bit error rate is high and star on resource is limited and star on the features such as resource is limited so that traditional ground network Routing Protocol is uncomfortable
For satellite communication network.Conventional transmission control protocol (TCP) takes single-channel communication, thus results in waste of resources.For this purpose, IETF
The multiplexing of multipath TCP (MPTCP) Lai Shixian TCP specially is proposed, to improve link utilization and agreement robustness.
Along with the application of the rise of the various applications in internet, especially P2P, demand of the user to bandwidth is increasing.Meanwhile broadband
Access technology has also obtained unprecedented development, especially Wireless Broadband MAN, such as WiFi, WiMAX, 3G etc., so that
One user terminal has the multilink to destination node simultaneously.If data flow is distributed in a manner of resource-sharing
Network bandwidth is improved on this multilink, here it is the thoughts of multipath TCP (MPTCP).MPTCP (MultipathTCP)
Agreement is a kind of transport layer protocol using mulitpath concurrent transmission, and throughput end to end can be improved, and increases network benefit
With rate.With the development of technology, many equipment are provided with multiple network interfaces, and TCP is still the agreement of a single line, In
Originator and receiving end all cannot random address substitutees in the communication process of TCP.This can be special using this of multiple network interfaces
Property improves performance and active redundancy.Such as: when mobile phone connects WIFI signal and 3G signal simultaneously, if WIFI turns off,
It just will disconnect using the TCP connection that WIFI is carried out, and 3G network cannot be efficiently used and continue sending and receiving data.And Multipath
TCP can include mulitpath in a TCP link, and the above problem is avoided to occur.Different from conventional TCP, MPTCP can be mentioned
For multichannel communication multiple telecommunication end to end.In addition, MPTCP can also improve robustness by retransmitting data on multilink.MPTCP
It is mostly all sub- roads of mpcb needs of MPTCP after subpath resets out-of-sequence packet with the difference of TCP in terms of receiving data
The packet of diameter is ranked up.MPTCP permission establishes multiple subchannels in a TCP link.When a channel is according to three-way handshake
Mode set up after, other subchannels can be established in the way of three-way handshake, these channels are built with three-way handshake
Vertical connection and 4-Way Handshake release connection.These channels can all be bound to MPTCP session, and the data of transmitting terminal can choose
Wherein a channel is transmitted.The reception packet procedures of MPTCP are divided into two stages: the first, each subchannel is according to itself sequence
Number carry out reconstructed file section；The second, the control module of MPTCP recombinates the message segment of all subchannels according to DSN.By institute
Some data can be sent by different subpaths, and in receiving end, MPTCP needs to resequence to data.Therefore it needs to count
It is mapped according to serial number.Data sequence number mapping definition is from subpath sequence space to the mapping in data sequence space.The sequence of subpath
Space is the sequence number of subpath itself, and data sequence space maintains all data that need to be sent.If MPTCP uses biography
The mode of the TCP of system sends data, it will a part of Bao Yi sub-channels occurs, and another part packet is in an other strip
Channel.In this case, the intermediate equipments such as firewall will will receive the packet of the serial number jump of TCP, therefore it is different packet loss will to occur etc.
Reason condition.
Single path mode transmits data, and routing cost and network delay are larger, network congestion can be caused when loading larger and
Multichannel routing method can be solved these problems preferably.To improve data in the safety of transmission process, multi-path transmission is logical
It crosses among aggregation node to sensing node and constructs mulitpath and transmit data past, the service of multi-path transmission is usual
It is all the transmission of terminal-to-terminal service, multi-path transmission can make wireless network obtain higher bandwidth and reach the mesh for improving handling capacity
, however it will also result in efficiency reduction, scheduling is complicated.In order to guarantee transmission quality, meet the requirement of the bit error rate, foreign countries are over the ground
Number passes antenna and gradually uses high-gain spot beam antenna.Currently, the number of external high-resolution satellite pass that antennas generally use be
Mechanical scanning spot beam anternma.
Summary of the invention
In order to reduce interference problem when multichannel data simultaneous transmission, acceptance when multichannel data simultaneous transmission is improved
Can, place in view of the deficiency of the prior art provides a kind of interference when can reduce multichannel data simultaneous transmission, mentions
Multi-path data transmission method on the star of receptivity when high multichannel data simultaneous transmission.
Above-mentioned purpose of the invention can be obtained by following measures: multi-path data transmission method on a kind of star, tool
Have a following technical characteristic: a circuit-switched data originally is weighted additions by multi-path transmission processor, or rearrange transmit it is suitable
After sequence and reprocessing, is transmitted on crossed dispersion to multiple and different transmission paths, utilize different frequencies, polarization direction
Or the multiple transmission paths of Wave beam forming, it is received by the data of multi-path transmission by ground receiving equipment.
The present invention has the advantages that compared with the prior art.
Originally a circuit-switched data is weighted addition using multi-path transmission processor by the present invention, or rearranges transmission
After sequence and reprocessing, is transmitted on crossed dispersion to multiple and different transmission paths, utilize different frequencies, polarization side
Multiple transmission paths are formed to, wave beam etc., flexibly carries out data transmission over a plurality of paths, improves total data transporting
Can, interference problem when multichannel data simultaneous transmission is reduced, receptivity when multichannel data simultaneous transmission can be improved.
Detailed description of the invention
Fig. 1 is that a circuit-switched data is distributed to the embodiment signal handled in two different transmission paths on star of the present invention
Figure.
Fig. 2 indicates that a circuit-switched data of the invention passes through the embodiment schematic diagram of multi-path transmission processing.
Fig. 3 to Fig. 8 is that a circuit-switched data is rearranged transmission sequence and duplicate place after multi-path transmission processor
Manage schematic diagram.
To further illustrate presently preferred embodiments of the present invention, and after cooperating attached drawing to be specified in, so as to be easier to for the present invention
In understanding.By referring to the embodiment of following description, illustrates technical characteristic of the invention, will be apparent.
Specific embodiment
In Fig. 1 into Fig. 8, according to the present invention, a circuit-switched data originally is weighted addition by multi-path transmission processor, or
After person rearranges transmission sequence and reprocesses, transmitted on crossed dispersion to multiple and different transmission paths, Ke Yili
Multiple transmission paths are formed with different frequencies, polarization direction, wave beam etc..It is set by the data of multi-path transmission by ground receiver
It is standby to be received.
Embodiment 1
Refering to fig. 1.One circuit-switched data { x1, x2..., it is entered multi-path transmission processor, the data { x being arranged in order originally1,
x2... after the processing of multi-path transmission processor, it is weighted, addition forms two paths of data { w11xk+w12xk+1...,
{w21xk+w22xk+1..., wherein x is data character of the source node to destination node, and w is preset or by multipath
Transmission processor voluntarily calculated weighted value, k=1,3,5 ....Two paths of data will pass on two different paths respectively
Defeated, different transmission paths can be different frequency, polarization direction, wave beam etc..By the final quilt of data of different path transmissions
Ground receiving equipment is received.
Embodiment 2
Refering to Fig. 2.Embodiment 2 is more generally situation on the basis of embodiment 1.One circuit-switched data { x1, x2..., it is entered
Multi-path transmission processor, the data { x being arranged in order originally1, x2... after the processing of multi-path transmission processor, added
Power, addition form m circuit-switched data { w11xk+1+w12xk+2+…+w1nxk+n..., { w21xk+1+w22xk+2+…+w2nxk+n... ...
{wm1xk+1+wm2xk+2+…+wmnxk+n..., wherein m is the quantity of multipath, and x is data word of the source node to destination node
Symbol, w be preset or by multi-path transmission processor voluntarily calculated weighted value, k be the n since 0 ing again
Number, k=0, n, 2*n ..., n are positive integer.Multichannel data will transmit on two different paths respectively, different transmission
Path can be different frequency, polarization direction, wave beam etc..By the data of different path transmissions finally by ground receiving equipment institute
It receives.
Embodiment 3
Refering to Fig. 3.One circuit-switched data { x1, x2..., it is entered multi-path transmission processor, the data { x being arranged in order originally1,
x2... after the processing of multi-path transmission processor, by crossed dispersion to different paths and transmission of resequencing, simultaneously
Changing section data sign carries out conjugate operation, forms two paths of data { xk,-xk+1 H..., { xk+1, xk H..., k=
1,3,5 ..., two paths of data will be transmitted on two different paths respectively, different transmission paths can be different frequency,
Polarization direction, wave beam etc..It is finally received by ground receiving equipment by the data of different path transmissions, subscript H is indicated in figure
Conjugate operation.
Embodiment 4
Refering to Fig. 4.One circuit-switched data { x1, x2..., it is entered multi-path transmission processor, the data { x being arranged in order originally1,
x2... after the processing of multi-path transmission processor, by crossed dispersion to different paths and transmission of resequencing, simultaneously
Changing section data sign forms two paths of data { xk+1,-xk+2..., { xk+2, xk+1..., k=0,2,4 ..., two numbers
According to that will transmit on two different paths respectively, different transmission paths can be different frequency, polarization direction, wave beam
Deng.It is finally received by ground receiving equipment by the data of different path transmissions.
Embodiment 5
Refering to Fig. 5.One circuit-switched data { x1, x2..., it is entered multi-path transmission processor, the data { x being arranged in order originally1,
x2... after the processing of multi-path transmission processor, by crossed dispersion to different paths and transmission of resequencing, simultaneously
Changing section data sign forms 4 circuit-switched data { xk+1,-xk+2,-xk+3,-xk+4..., { xk+2, xk+1, xk+4,-xk+3...,
{xk+3,-xk+4, xk+1, xk+2..., { xk+4, xk+3,-xk+2, xk+1..., k=0,4,8 ....4 circuit-switched datas will be respectively at 4
It is transmitted on different paths, different transmission paths can be different frequency, polarization direction, wave beam etc..By different paths
The data of transmission are finally received by ground receiving equipment.
Embodiment 6
Refering to Fig. 6.One circuit-switched data { x1, x2..., it is entered multi-path transmission processor, the data { x being arranged in order originally1,
x2... after the processing of multi-path transmission processor, by crossed dispersion to different paths and transmission of resequencing, simultaneously
Changing section data sign carries out conjugate operation, forms 4 circuit-switched data { xk+1,-xk+2,-xk+3,-xk+4, xk+1 H,-
xk+2 H,-xk+3 H,-xk+4 H..., { xk+2, xk+1, xk+4,-xk+3, xk+2 H, xk+1 H, xk+4 H,-xk+3 H..., { xk+3,-xk+4, xk+1,
xk+2, xk+3 H,-xk+4 H, xk+1 H, xk+2 H..., { xk+4, xk+3,-xk+2, xk+1, xk+4 H, xk+3 H,-xk+2 H, xk+1 H..., k=0,
4,8 ..., subscript H indicates conjugate operation in figure.4 circuit-switched datas will be transmitted on 4 different paths respectively, different transmission
Path can be different frequency, polarization direction, wave beam etc..By the data of different path transmissions finally by ground receiving equipment institute
It receives.
Embodiment 7
Refering to Fig. 7.One circuit-switched data { x1, x2..., it is entered multi-path transmission processor, the data { x being arranged in order originally1,
x2... after the processing of multi-path transmission processor, by crossed dispersion to different paths and transmission of resequencing, simultaneously
Changing section data sign forms 8 circuit-switched data { xk+1, xk+2, xk+3, xk+4, xk+5, xk+6, xk+7, xk+8..., { xk+2,-
xk+1, xk+4,-xk+3, xk+6,-xk+5,-xk+8, xk+7..., { xk+3,-xk+4,-xk+1, xk+2,-xk+7,-xk+8, xk+5, xk+6...,
{xk+4, xk+3,-xk+2,-xk+1, xk+8, xk+7,-xk+6, xk+5..., { xk+5,-xk+6, xk+7, xk+8,-xk+1, xk+2,-xk+3,-
xk+4..., { xk+6, xk+5, xk+8,-xk+7,-xk+2,-xk+1, xk+4,-xk+3..., { xk+7, xk+8,-xk+5, xk+6, xk+3,-
xk+4,-xk+1,-xk+2..., { xk+8,-xk+7,-xk+6,-xk+5, xk+4, xk+3, xk+2,-xk+1..., k=0,8,16 ....8 tunnels
Data will be transmitted on 8 different paths respectively, and different transmission paths can be different frequency, polarization direction, wave beam
Deng.It is finally received by ground receiving equipment by the data of different path transmissions.
On the basis of embodiment 3 to embodiment 7, due to will by multi-path transmission processor treated data symbol
Transmission primaries are at least repeated on each path, repetition transmission herein can be realized in the dimension for being different from multipath.
Here dimension refers to time, frequency, polarization direction, wave beam.But the dimension for repeating transmission must be different from the dimension in path.It is all heavy
The possible combination of the dimension of the dimension and different paths transmitted again is as shown in position " √ " in table 1.
Table 1
Fig. 8 is shown, and on the basis of embodiment 3, using the dimension of multipath as frequency, duplicate dimension is the act of time
Example.
Foregoing description is only preferred embodiment used to explain the present invention, is not intended to accordingly do in any form invention
Limitation, all any type of modifications or change based on creative spirit of the invention, done all still should belong to this hair
The bright scope for being intended to protection.
Claims (10)
1. multi-path data transmission method on a kind of star, have following technical characteristic: multi-path transmission processor will originally all the way
Data are weighted addition, or rearrange transmission sequence and reprocess after, crossed dispersion to multiple and different transmission roads
It is transmitted on diameter, using different frequencies, polarization direction or the multiple transmission paths of Wave beam forming, by multi-path transmission
Data are received by ground receiving equipment.
2. multi-path data transmission method on star as described in claim 1, it is characterised in that: a circuit-switched data { x1, x2..., quilt
Input multi-path transmission processor, the data { x being arranged in order originally1, x2... after the processing of multi-path transmission processor,
It is weighted, addition forms m circuit-switched data { w11xk+1+w12xk+2+…+w1nxk+n..., { w21xk+1+w22xk+2+…+
w2nxk+n... ... { wm1xk+1+wm2xk+2+…+wmnxk+n..., wherein m is the quantity of multipath, and x is source node to purpose section
The data character of point, w is preset or voluntarily calculated weighted value, k are since 0 by multi-path transmission processor
N multiple, k=0, n, 2*n ..., n is positive integer.
3. multi-path data transmission method on star as described in claim 1, it is characterised in that: the data being arranged in order originally
{x1, x2... after the processing of multi-path transmission processor, by crossed dispersion to different paths and transmission of resequencing, together
When changing section data sign or carry out conjugate operation, formed multichannel data.
4. multi-path data transmission method on star as described in claim 1, it is characterised in that: multichannel data will be respectively multiple
It is transmitted on different paths, different transmission paths is different frequency, polarization direction and wave beam.
5. multi-path data transmission method on star as claimed in claim 3, it is characterised in that: pass through multi-path transmission processor
Treated, and data symbol will be repeatedly transmitted once on each path, and it is real in the dimension for being different from multipath to repeat transmission
It is existing.
6. multi-path data transmission method on star as claimed in claim 5, it is characterised in that: dimension refers to time, frequency, polarization
Direction, wave beam.
7. multi-path data transmission method on star as claimed in claim 3, it is characterised in that: a circuit-switched data { x1, x2..., quilt
Input multi-path transmission processor, the data { x being arranged in order originally1, x2... after the processing of multi-path transmission processor,
Partial data sign on crossed dispersion to different paths and transmission of resequencing, is changed simultaneously, 4 circuit-switched datas are formed
{xk+1,-xk+2,-xk+3,-xk+4..., { xk+2, xk+1, xk+4,-xk+3..., { xk+3,-xk+4, xk+1, xk+2..., { xk+4,
xk+3,-xk+2, xk+1..., k=0,4,8 ...；4 circuit-switched datas will be transmitted on 4 different paths respectively, different transmission
Path can be different frequency, polarization direction, wave beam, finally be connect by ground receiving equipment by the data of different path transmissions
It receives.
8. multi-path data transmission method on star as described in claim 1, it is characterised in that: a circuit-switched data { x1, x2..., quilt
Input multi-path transmission processor, the data { x being arranged in order originally1, x2... after the processing of multi-path transmission processor,
By on crossed dispersion to different paths and transmission of resequencing, changes simultaneously partial data sign or carry out conjugation fortune
It calculates, forms 4 circuit-switched data { xk+1,-xk+2,-xk+3,-xk+4, xk+1 H,-xk+2 H,-xk+3 H,-xk+4 H..., { xk+2, xk+1, xk+4,-
xk+3, xk+2 H, xk+1 H, xk+4 H,-xk+3 H..., { xk+3,-xk+4, xk+1, xk+2, xk+3 H,-xk+4 H, xk+1 H, xk+2 H..., { xk+4,
xk+3,-xk+2, xk+1, xk+4 H, xk+3 H,-xk+2 H, xk+1 H..., k=0,4,8 ..., 4 circuit-switched datas will be respectively in 4 different paths
On transmitted, different transmission paths can be different frequency, polarization direction, wave beam, by the data of different path transmissions
It is finally received by ground receiving equipment, wherein subscript H indicates conjugate operation.
9. multi-path data transmission method on star as described in claim 1, it is characterised in that: a circuit-switched data { x1, x2..., quilt
Input multi-path transmission processor, the data { x being arranged in order originally1, x2... after the processing of multi-path transmission processor,
Partial data sign on crossed dispersion to different paths and transmission of resequencing, is changed simultaneously, 8 circuit-switched datas are formed
{xk+1, xk+2, xk+3, xk+4, xk+5, xk+6, xk+7, xk+8..., { xk+2,-xk+1, xk+4,-xk+3, xk+6,-xk+5,-xk+8,
xk+7..., { xk+3,-xk+4,-xk+1, xk+2,-xk+7,-xk+8, xk+5, xk+6..., { xk+4, xk+3,-xk+2,-xk+1, xk+8, xk+7,-
xk+6, xk+5..., { xk+5,-xk+6, xk+7, xk+8,-xk+1, xk+2,-xk+3,-xk+4..., { xk+6, xk+5, xk+8,-xk+7,-xk+2,-
xk+1, xk+4,-xk+3..., { xk+7, xk+8,-xk+5, xk+6, xk+3,-xk+4,-xk+1,-xk+2..., { xk+8,-xk+7,-xk+6,-
xk+5, xk+4, xk+3, xk+2,-xk+1..., k=0,8,16 ....
10. multi-path data transmission method on star as claimed in claim 9, it is characterised in that: 8 circuit-switched datas will be respectively at 8
It is transmitted on different paths, is finally received by ground receiving equipment by the data of different path transmissions.
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| CN115037671A (en) * | 2021-03-04 | 2022-09-09 | 华为技术有限公司 | Multi-path aggregation scheduling method and electronic equipment |
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