CN108900236A - satellite communication method and terminal, relay station and communication system - Google Patents
satellite communication method and terminal, relay station and communication system Download PDFInfo
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- CN108900236A CN108900236A CN201810604488.7A CN201810604488A CN108900236A CN 108900236 A CN108900236 A CN 108900236A CN 201810604488 A CN201810604488 A CN 201810604488A CN 108900236 A CN108900236 A CN 108900236A
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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
-
- 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
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention is suitable for technical field of satellite communication, provides a kind of satellite communication method and terminal, relay station and communication system, the satellite communication method include：The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；Operation and coding are carried out to received information, obtain trunk information；The trunk information is sent to the first satellite and the second satellite simultaneously, the information that inverse operation obtains interactive object is carried out based on the trunk information convenient for first satellite and the second satellite, first satellite and the second satellite interactive object each other.In the present invention, information is subjected to polarization code coded treatment before communicating, the noise jamming of transmission process can be reduced, and encode using polarization code, reduces power consumption and data volume storage, reduces cost.
Description
Technical field
The invention belongs to technical field of satellite communication more particularly to a kind of satellite communication method and terminal, relay station and lead to
Letter system.
Background technique
In the prior art, the scene that collaboration communication is most widely used is 3 classical relay-models, including source section
Point, relay node and destination node, transmission process can be divided into two stages, first stage, source node broadcast data, second-order
Section, only relay node sends data to destination node.
Cooperation technology is applied in satellite communication by many scholars in recent years, such as relayed communications between star, with a satellite
A is source node, and another satellite B is purpose node, and the two is interacted by relay station, and the process of data transmission is：When first
Between section：Satellite A- relay station；Second time period：Satellite B- relay station；The third period：Relay station-satellite A and satellite B.But
Such communication means needs three periods, and the transmission time needed is longer, and information transfer efficiency is lower.In addition, being defended when one
Another satellite is waited for when star transmits data, also results in the waste of resource.In addition, in wireless communication is met, by
In the reliability of channel noise interference effect data transmission, in the prior art it is generally necessary to be encoded to come to the information of transmission
Channel noise interference is resisted, such as：Turbo code, LDPC code etc., and the complex circuit designs degree and correspondence that turbo code needs
Power consumption it is relatively high, and LDPC code needs biggish memory space, therefore the actual demand that cannot be close to the users.
Summary of the invention
The embodiment of the invention provides a kind of satellite communication method and terminals, relay station and communication system, it is intended to solve existing
There is the communication process of technology to encode information to reduce channel noise interference and the problem of increase cost.
A kind of satellite communication method, including：
The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；
Operation and coding are carried out to received information, obtain trunk information；
The trunk information is sent to the first satellite and the second satellite simultaneously, is defended convenient for first satellite and second
Star carries out the information that inverse operation obtains interactive object based on the trunk information, and first satellite is handed over each other with the second satellite
Mutual object.
Preferably, described to carry out operation coding to received information, obtaining trunk information includes：
The received information of institute is decoded, corresponding decoded information is obtained；
Xor operation processing is carried out to the decoded information, obtains preliminary trunk information；
Polarization code coded treatment is carried out to the preliminary trunk information, obtains trunk information.
Preferably, further include before the information that the first satellite of the reception and the second satellite are simultaneously emitted by：
Time service instruction is issued to first satellite and the second satellite, so that first satellite and the second satellite carry out
Clock is synchronous, and the time service instruction carries the current clock information of sender.
Preferably, described that operation is carried out to received information, after obtaining operation information, operation information sent respectively
Further include before to the first satellite and the second satellite：
Time service instruction is issued to first satellite and the second satellite, so that first satellite and the second satellite carry out
Clock is synchronous, and the time service instruction carries the current clock information of sender.
Preferably, described that the trunk information is sent to the first satellite and the second satellite is specially simultaneously：
The trunk information is sent to the first satellite and the second satellite simultaneously by broadcast channel.
The present invention also provides a kind of satellite communication terminals, including：
Receiving unit, the information being simultaneously emitted by for receiving the first satellite and the second satellite, the information pass through polarization code
Coded treatment；
Processing unit obtains trunk information for carrying out operation and coding to received information；
Transmission unit is convenient for described first for the trunk information to be sent to the first satellite and the second satellite simultaneously
Satellite and the second satellite carry out the information that inverse operation obtains interactive object based on the trunk information, first satellite and the
Two satellites interactive object each other.
The present invention also provides a kind of relay station, which includes a kind of satellite communication terminal, the satellite communication terminal
Including：
Receiving unit, the information being simultaneously emitted by for receiving the first satellite and the second satellite, the information pass through polarization code
Coded treatment；
Processing unit obtains trunk information for carrying out operation and coding to received information；
Transmission unit is convenient for described first for the trunk information to be sent to the first satellite and the second satellite simultaneously
Satellite and the second satellite carry out the information that inverse operation obtains interactive object based on the trunk information, first satellite and the
Two satellites interactive object each other.
The present invention also provides communication system, the communication system includes a kind of relay station, and the relay station is defended including one kind
Star communication terminal, the satellite communication terminal include：
Receiving unit, the information being simultaneously emitted by for receiving the first satellite and the second satellite, the information pass through polarization code
Coded treatment；
Processing unit obtains trunk information for carrying out operation and coding to received information；
Transmission unit is convenient for described first for the trunk information to be sent to the first satellite and the second satellite simultaneously
Satellite and the second satellite carry out the information that inverse operation obtains interactive object based on the trunk information, first satellite and the
Two satellites interactive object each other.
The present invention also provides a kind of memory, the memory is stored with computer program, which is characterized in that the meter
Calculation machine program is executed by processor following steps：
The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；
Operation and coding are carried out to received information, obtain trunk information；
The trunk information is sent to the first satellite and the second satellite simultaneously, is defended convenient for first satellite and second
Star carries out the information that inverse operation obtains interactive object based on the trunk information, and first satellite is handed over each other with the second satellite
Mutual object.
The present invention also provides a kind of service terminal, including memory, processor and storage are in the memory and can be
The computer program run on the processor, the processor realize following steps when executing the computer program：
The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；
Operation and coding are carried out to received information, obtain trunk information；
The trunk information is sent to the first satellite and the second satellite simultaneously, is defended convenient for first satellite and second
Star carries out the information that inverse operation obtains interactive object based on the trunk information, and first satellite is handed over each other with the second satellite
Mutual object.
In the embodiment of the present invention, information is subjected to polarization code coded treatment before communicating, the noise of transmission process can be reduced
Interference, and encoded using polarization code, reduce power consumption and data volume storage, reduces cost.
Detailed description of the invention
Fig. 1 is a kind of flow chart for satellite communication method that first embodiment of the invention provides；
Fig. 2 is a kind of flow chart of a preferred embodiment of satellite communication method that first embodiment of the invention provides；
Fig. 3 is the specific flow chart of the step S2 for satellite communication method that first embodiment of the invention provides a kind of；
Fig. 4 is a kind of interaction schematic diagram for satellite communication method that first embodiment of the invention provides；
Fig. 5 is a kind of structure chart for satellite communication terminal that second embodiment of the invention provides；
Fig. 6 is a kind of structure chart for communication system that fourth embodiment of the invention provides；
Fig. 7 is a kind of structure chart for service terminal that fifth embodiment of the invention provides；
Fig. 8 is a kind of process schematic of the polarization code coding of satellite communication method provided by the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
In the embodiment of the present invention, a kind of satellite communication method, including：It receives the first satellite and the second satellite is simultaneously emitted by
Information, the information pass through polarization code coded treatment；Operation and coding are carried out to received information, obtain trunk information；It will
The trunk information is sent to the first satellite and the second satellite simultaneously, is based on convenient for first satellite and the second satellite described
Trunk information carries out the information that inverse operation obtains interactive object, first satellite and the second satellite interactive object each other.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Embodiment one：
Fig. 1 shows a kind of flow chart of satellite communication method of first embodiment of the invention offer, and this method includes：
Step S1 receives the information that the first satellite and the second satellite are simultaneously emitted by；
Specifically, the first satellite and the second satellite interactive object each other.In the current situation, it the first satellite and second defends
Star carries out coded treatment firstly the need of to the information of sending, it is preferable that is compiled using polarization code coding mode to information
Code；Then the first satellite and the second satellite are simultaneously emitted by the respective information encoded by polarization code.The information preferably interacts
Information, i.e. the first satellite can send the information for needing to interact with the second satellite, and the second satellite can send needs and the first satellite
Interactive information, the two will need respectively and simultaneously the information of interaction issue relay station (relay station be preferably satellite or
Base station), received information is transmitted to interactive object by relay station.
Preferably, the process of polarization code coding is following (see Fig. 8)：
Firstly, length to be processed is in the incoming polarization code coder of binary message U of " K " bit.By different volumes
Formation length is the encoded infonnation of " N " bit after the coding of code rate, then by the modem of satellite by the binary system
Information flow is modulated to analog signal flow " x ", is preferably BPSK modulation system in figure.Pass through transmission channel, the transmission channel later
Preferably Gaussian white noise channel (AWGN).The analog signal flow " x " is fitted by transmission and noise, in the receiving end of satellite
Obtain analog signal " y ".Analog signal " y " is input to another polarization code decoder later, which is preferably
SCD decoder obtains decoded source input
Further, first satellite is identical as the length for the information that the second satellite issues, and can prevent because length is inconsistent
Cause receiving time inconsistent, and then lead to byte loss or dislocation, improves the reliability of information transmission.
Step S2 carries out operation and coding to received information, obtains trunk information；
Specifically, after the information for receiving the first satellite and the second satellite, to received information carry out operation (such as into
Line frequency domain XOR XOR operation or time domain sum operation), it is then encoded, finally obtains trunk information；
Trunk information is sent to the first satellite and the second satellite by step S3 simultaneously；
Specifically, after operation obtains trunk information, while the trunk information is sent to the first satellite and second is defended
Star, is based on trunk information convenient for the first satellite and the second satellite and carries out inverse operation (such as carrying out reverse frequency domain XOR XOR operation
Or time domain additive operation) obtain interactive object information.Further, by broadcast channel (brc, broadcast) will in
It is sent to the first satellite and the second satellite simultaneously after information.
In the present embodiment, information is subjected to polarization code coded treatment before communicating, the noise that can reduce transmission process is dry
It disturbs, and is encoded using polarization code, reduce power consumption and data volume storage, reduce cost.
In a preferred embodiment of this embodiment, may also include before step S1 (see Fig. 2)：
Step S4 issues time service instruction to the first satellite and the second satellite, when so that the first satellite and the second satellite carrying out
Clock is synchronous；
Specifically, before the first satellite and the second satellite interact, first control the first satellite and the second satellite when
Clock is synchronous, i.e., issuing time service instruction with the second satellite to the first satellite by relay station, (the time service instruction carries sender and works as
Preceding clock information, preferred relay station is sender at this time), first satellite and the second satellite are based on time service instruction adjustment
The clock of itself with synchronous with the clock of relay station, and then reaches synchronous with the clock of interactive object.For example, the first satellite will
Received trunk information carries out inverse operation, obtains the information that the second satellite issues, and the second satellite by received trunk information into
Row inverse operation obtains the information that the first satellite issues, to realize the interaction of information.
Preferably, it is synchronous to carry out clock that the atomic time of relay station can be used.
In the present embodiment, interactive satellite is subjected to clock and is synchronized, each self-information is sent to relaying simultaneously by interactive satellite
It stands, after relay station carries out operation to received information, is in the case that clock synchronizes in interactive satellite simultaneously by trunk information
It is sent to interactive satellite, obtains the information of interactive object to received trunk information convenient for interactive satellite, shortening information exchange needs
The time wanted, improve data transfer efficiency.
In a preferred embodiment of this embodiment, may also include before step S4：
The communication request of the first satellite and the second satellite is received respectively；
Specifically, the communication request of the first satellite and the second satellite is received, which includes the mesh interactively communicated
The information for marking object (i.e. interactive object), then goes to step S4；
In another preferred embodiment of the present embodiment, it may also include before step S4：
Preset messaging parameter；
Specifically, which includes preset call duration time and interactive object, when arrival is preset logical
When believing the time, step S4 is gone to, clock synchronous correction actively is carried out to interactive object.
In a preferred embodiment of this embodiment, may also include after step S2, before step S3：
Step S5 issues time service instruction to the first satellite and the second satellite, when so that the first satellite and the second satellite carrying out
Clock is synchronous；
Specifically, before issuing trunk information to the first satellite and the second satellite, sender also needs to control first and defends
Star is synchronous with the clock of the second satellite, and preferred relay station is sender at this time, and time service instruction carries the current clock of relay station
Itself current clock information is sent to first and second satellite by information, relay station, and first satellite and the second satellite are based on
Itself clock of time service instruction adjustment with synchronous with the clock of sender's (preferably relay station), and then reach and interacts pair
The clock of elephant is synchronous.
In a preferred embodiment of this embodiment, which is preferably relay station, be responsible for the first satellite with
Information exchange between second satellite, the relay station are provided with mac layers as information receiving channel, are sent using brc as information
Channel.
In a preferred embodiment of this embodiment, as shown in figure 3, being defended for one kind that first embodiment of the invention provides
The specific flow chart of the step S2 of star communication means, the step S2 are specifically included：
Step S21 is decoded the received information of institute, obtains corresponding decoded information；
Specifically, the information received is to need to solve received information at this time by polarization code coded treatment
Code processing, obtains corresponding decoded information.
Step S22 carries out xor operation processing to decoded information, obtains preliminary trunk information；
Specifically, xor operation is carried out to decoded information on a physical layer, the letter for obtaining that length is identical and being superimposed in time domain
Breath, as preliminary trunk information.
Step S23 carries out polarization code coded treatment to preliminary trunk information, obtains trunk information；
Specifically, information needs to carry out coded treatment before being transmitted, carries out at this time to preliminary trunk information same
Polarization code coded treatment, obtain trunk information.
As shown in Figure 4, a kind of interaction schematic diagram of the satellite communication method provided for first embodiment of the invention, in order to
It is easy to understand, brief description realizes process：
N1, N2 are expressed as the first satellite and the second satellite, and relay station NR issues time service instruction, first satellite N1
And second satellite N2 adjust itself clock, synchronous with relay station clock, in first time period, the first satellite and the second satellite will
It needs interactive information to be separately encoded (polarization code coding), while X1 is transmitted (by first by mac (medium access control) layer
Satellite issue) and X2 information to relay station NR, time-domain is expressed as：YR=X1+X2+WR, wherein WRFor link in transmission process
Noise, X1And X2The message bit stream that respectively the first satellite N1 and the second satellite N2 are sent after clock synchronizes, YRIt indicates
The sum of two paths of signals and noise (i.e. the received information of relay station) in the time domain.
Further, the first satellite N1 and the second satellite N2 starts to transmit the information of equal length, until transferring
Finish；In second time period, relay station is decoded received information respectively, and executes xor operation on a physical layer, obtains
Length is identical, the preliminary trunk information being superimposed in time domain, then carries out polarization code and encodes to obtain trunk information, to the first satellite
N1 and the second satellite N2 issues time service instruction respectively, the first satellite N1 and the second satellite N2 adjust automatically itself clock with
Relay station is synchronous, and relay station sends trunk information to the first satellite N1 and the second satellite N2, first satellite in the same time
Received trunk information is decoded by N1 and the second satellite N2 respectively, then carry out inverse operation (such as with local information with connect
The information received carries out operation dissimilation processing in physical layer, extracts the raw information of other side), interactive information is finally obtained, this
When time-domain be respectively：For the first satellite, Y1=XR+W1；For the second satellite, Y2=XR+W2, W1For the first satellite with
Link noise between relay station, W2For the link noise between the second satellite and relay station, XRFor trunk information, Y1In expression
After the sum of link noise between information and the first satellite and relay station (i.e. the information of the first satellite reception), Y2Indicate relaying
The sum of link noise between information and the second satellite and relay station (i.e. the information of the second satellite reception).
It should be noted that there is no certain senses for first satellite and the second satellite of the present embodiment, only as difference.
In the present embodiment, information is subjected to polarization code coded treatment before communicating, the noise that can reduce transmission process is dry
It disturbs, and is encoded using polarization code, reduce power consumption and data volume storage, reduce cost.
It being synchronized secondly, interactive satellite is carried out clock, each self-information is sent to relay station simultaneously by interactive satellite, in
After standing to the progress operation of received information, it is in the case that clock synchronizes in interactive satellite and simultaneously sends trunk information
To interactive satellite, the information of interactive object is obtained to received trunk information convenient for interactive satellite, shortening information interactive process needs
The time wanted improves information transfer efficiency.
Furthermore the first satellite is consistent with the message length that the second satellite is sent, and sends simultaneously, byte loss can be prevented
And improve information reliability.
Embodiment two：
As shown in figure 5, a kind of structure chart of the satellite communication terminal provided for second embodiment of the invention, the terminal packet
It includes：Receiving unit 1, the processing unit 2 being connect with receiving unit 1, the transmission unit 3 being connect with processing unit 2, wherein：
Receiving unit 1, the information being simultaneously emitted by for receiving the first satellite and the second satellite；
Specifically, specifically, the first satellite and the second satellite interactive object each other.In the current situation, the first satellite and
Second satellite carries out coded treatment firstly the need of to the information of sending, it is preferable that using polarization code coding mode come to information into
Row coding；Then the first satellite and the second satellite are simultaneously emitted by the respective information encoded by polarization code.The information is preferably
Interactive information, i.e. the first satellite can send the information for needing to interact with the second satellite, and the second satellite can send needs and first
The information of satellite interaction, the information for needing interaction is issued relay station respectively and simultaneously by the two, and (relay station is preferably satellite
Or base station), received information is transmitted to interactive object by relay station.
Preferably, the process of polarization code coding is following (see Fig. 8)：
Firstly, length to be processed is in the incoming polarization code coder of binary message U of " K " bit.By different volumes
Formation length is the encoded infonnation of " N " bit after the coding of code rate, then by the modem of satellite by the binary system
Information flow is modulated to analog signal flow " x ", is preferably BPSK modulation system in figure.Pass through transmission channel, the transmission channel later
Preferably Gaussian white noise channel (AWGN).The analog signal flow " x " is fitted by transmission and noise, in the receiving end of satellite
Obtain analog signal " y ".Analog signal " y " is input to another polarization code decoder later, which is preferably
SCD decoder obtains decoded source input
Further, first satellite is identical as the length for the information that the second satellite issues, and can prevent because length is inconsistent
Cause receiving time inconsistent, and then lead to byte loss or dislocation, improves the reliability of information transmission.
Processing unit 2 obtains trunk information for carrying out operation to received information；
Specifically, after the information for receiving the first satellite and the second satellite, to received information carry out operation (such as
Carry out frequency domain XOR XOR operation or time domain sum operation), it is then encoded, finally obtains trunk information；
Transmission unit 3, for trunk information to be sent to the first satellite and the second satellite simultaneously；
Specifically, after operation obtains trunk information, while the trunk information is sent to the first satellite and second is defended
Star, is based on trunk information convenient for the first satellite and the second satellite and carries out inverse operation (such as carrying out reverse frequency domain XOR XOR operation
Or time domain additive operation) obtain interactive object information.Further, by broadcast channel (brc, broadcast) will in
It is sent to the first satellite and the second satellite simultaneously after information.
In the present embodiment, information is subjected to polarization code coded treatment before communicating, the noise that can reduce transmission process is dry
It disturbs, and is encoded using polarization code, reduce power consumption and data volume storage, reduce cost.
In a preferred embodiment of this embodiment, which may also include：The time service unit being connect with arithmetic element 2
4, wherein：
Time service unit 4, for issuing time service instruction to the first satellite and the second satellite, so as to the first satellite and second defend
It is synchronous that star carries out clock；
Specifically, before the first satellite and the second satellite interact, first control the first satellite and the second satellite when
Clock is synchronous, i.e., issues time service instruction to the first satellite and the second satellite by the time service unit 4 of satellite communication terminal and (carry and send out
The current clock information of the person of sending, the sender are preferably satellite communication terminal), first satellite and the second satellite are awarded based on this
When instruction adjustment itself clock, with synchronous with the clock of sender, and then reach synchronous with the clock of interactive object.For example,
Received trunk information is carried out inverse operation by the first satellite, obtains the information that the second satellite issues, and the second satellite will be received
Trunk information carries out inverse operation, the information that the first satellite issues is obtained, to realize the interaction of information.
Preferably, it is synchronous to carry out clock that the atomic time of relay station can be used.
In the present embodiment, interactive satellite is subjected to clock and is synchronized, each self-information is sent to relaying simultaneously by interactive satellite
It stands, after relay station carries out operation to received information, is in the case that clock synchronizes in interactive satellite simultaneously by trunk information
It is sent to interactive satellite, obtains the information of interactive object to received trunk information convenient for interactive satellite, shortening information exchange needs
The time wanted, improve data transfer efficiency.
The receiving unit 1 is also used to：First is received respectively before issuing time service instruction to the first satellite and the second satellite
The communication request of satellite and the second satellite；
The communication request of the first satellite and the second satellite is received respectively；
Specifically, the communication request of the first satellite and the second satellite is received, which includes the mesh interactively communicated
The information for marking object (i.e. interactive object), then feeds back to time service unit 4；
In another preferred embodiment of the present embodiment, which further includes：Setting unit, wherein：
Setting unit, for presetting messaging parameter；
Specifically, which includes preset call duration time and interactive object, when arrival is preset logical
When believing the time, time service unit 4 is then fed back to, clock synchronous correction actively is carried out to interactive object.
In a preferred embodiment of this embodiment, which is also used to complete operation in arithmetic element 3 to be formed
After trunk information, time service instruction is issued to the first satellite and the second satellite, so that the first satellite and the second satellite progress clock are same
Step；
Specifically, before issuing trunk information to the first satellite and the second satellite, it is also necessary to control the first satellite and the
The clock of two satellites is synchronous, itself current clock information is sent to first and second satellite by satellite communication terminal at this time, should
The clock of first satellite and the second satellite based on time service instruction adjustment itself, with synchronous with the clock of satellite communication terminal, into
And reach synchronous with the clock of interactive object.
In a preferred embodiment of this embodiment, which is preferably relay station, be responsible for the first satellite with
Information exchange between second satellite, the relay station are provided with mac layers as information receiving channel, are sent using brc as information
Channel.
In a preferred embodiment of this embodiment, which specifically includes：Decoding subunit and solution numeral list
The processing subelement of member connection, the coded sub-units being connect with processing subelement, wherein：
Decoding subunit obtains corresponding decoded information for being decoded to the received information of institute；
Specifically, the information received is to need to solve received information at this time by polarization code coded treatment
Code processing, obtains corresponding decoded information.
Subelement is handled, for carrying out xor operation processing to decoded information, obtains preliminary trunk information；
Specifically, xor operation is carried out to decoded information on a physical layer, the letter for obtaining that length is identical and being superimposed in time domain
Breath, as preliminary trunk information.
Coded sub-units obtain trunk information for carrying out polarization code coded treatment to preliminary trunk information；
Specifically, information needs to carry out coded treatment before being transmitted, carries out at this time to preliminary trunk information same
Polarization code coded treatment, obtain trunk information.
As shown in Figure 4, a kind of interaction schematic diagram of the satellite communication method provided for first embodiment of the invention, in order to
It is easy to understand, brief description realizes process：
N1, N2 are expressed as the first satellite and the second satellite, and relay station NR issues time service instruction, first satellite N1
And second satellite N2 adjust itself clock, synchronous with relay station clock, in first time period, the first satellite and the second satellite will
It needs interactive information to be separately encoded (polarization code coding), while X1 is transmitted (by first by mac (medium access control) layer
Satellite issue) and X2 information to relay station NR, time-domain is expressed as：YR=X1+X2+WR, wherein WRFor link in transmission process
Noise, X1And X2The message bit stream that respectively the first satellite N1 and the second satellite N2 are sent after clock synchronizes, YRIt indicates
The sum of two paths of signals and noise (i.e. the received information of relay station) in the time domain.Further, the first satellite N1 and second is defended
Star N2 starts to transmit the information of equal length, until end of transmission；In second time period, relay station distinguishes received information
It is decoded, and executes xor operation on a physical layer, obtain the preliminary trunk information that length is identical, is superimposed in time domain, so
Polarization code is carried out afterwards to encode to obtain trunk information, issues time service instruction respectively to the first satellite N1 and the second satellite N2, this first
With synchronous with relay station, relay station sends relaying letter in the same time for satellite N1 and the second satellite N2 adjust automatically itself clock
Breath to the first satellite N1 and the second satellite N2, the first satellite N1 and the second satellite N2 respectively by received trunk information into
Row decoding, then carry out inverse operation (such as carry out operation dissimilation processing in physical layer with the information that receives with local information,
Extract the raw information of other side), interactive information is finally obtained, time-domain at this time is respectively：For the first satellite, Y1=XR
+W1；For the second satellite, Y2=XR+W2, W1For the link noise between the first satellite and relay station, W2It is the second satellite in
After the link noise between station, XRFor trunk information, Y1Indicate the chain road noise between trunk information and the first satellite and relay station
The sum of sound (i.e. the information of the first satellite reception), Y2Indicate the link noise between trunk information and the second satellite and relay station
The sum of (i.e. the information of the second satellite reception).
It should be noted that there is no certain senses for first satellite and the second satellite of the present embodiment, only as difference.
In the present embodiment, information is subjected to polarization code coded treatment before communicating, the noise that can reduce transmission process is dry
It disturbs, and is encoded using polarization code, reduce power consumption and data volume storage, reduce cost.
It being synchronized secondly, interactive satellite is carried out clock, each self-information is sent to relay station simultaneously by interactive satellite, in
After standing to the progress operation of received information, it is in the case that clock synchronizes in interactive satellite and simultaneously sends trunk information
To interactive satellite, the information of interactive object is obtained to received trunk information convenient for interactive satellite, shortening information interactive process needs
The time wanted improves information transfer efficiency.
Furthermore the first satellite is consistent with the message length that the second satellite is sent, and sends simultaneously, byte loss can be prevented
And improve information reliability.
Embodiment three：
Based on the above embodiment two, the present invention also proposes a kind of relay station, which is used to control the friendship between satellite
Mutually, the terminal as interaction between satellite, which includes the satellite communication terminal as described in above-described embodiment two, should
Specific structure, working principle and the brought technical effect of satellite communication terminal and the description basic one of above-described embodiment two
It causes, details are not described herein again.
Example IV：
Based on the above embodiment three, the present invention also proposes a kind of communication system, as shown in fig. 6, implementing for the present invention the 4th
A kind of structure chart for communication system that example provides, the communication system include：First satellite 61, the second satellite 62 and relay station 6,
Wherein：
By the progress information exchange of relay station 63, which controls the first satellite for first satellite 61 and the second satellite 62
61 is synchronous with the clock of the second satellite 62, to carry out information exchange.
First satellite 61, for the information interacted with the second satellite 62 will to be needed to carry out polarization code coded treatment, if receiving
To the relay station 63 synchronizing indication when, with second satellite 62 carry out clock it is synchronous；With second satellite clock
After 62 synchronize, the information for passing through coded treatment is sent to the relay station 63；In the trunk information for receiving the relay station 63
When, inverse operation is carried out to the trunk information, obtains the information that second satellite 62 is sent.
Second satellite 62, for the information interacted with the first satellite 61 will to be needed to carry out polarization code coded treatment, if receiving
To the relay station synchronizing indication when, with first satellite 61 carry out clock it is synchronous；With first satellite clock 61
After synchronizing, the information for passing through coded treatment is sent to the relay station 63；In the trunk information for receiving the relay station 63
When, inverse operation is carried out to the trunk information, obtains the information that first satellite 61 is sent；
Relay station 63 receives described first and defends for sending synchronizing indication to first satellite 61 and the second satellite 62
Star 61 and information the second satellite 62 and by coded treatment, carry out operation based on received information and coded treatment obtain
Trunk information, while trunk information is sent to first satellite 61 and the second satellite 62.
Further, first satellite 61 and the second satellite 62 be firstly the need of sending communication request to relay station 63 respectively,
After relay station 63 receives communication request, time service is sent to corresponding interactive object (the first satellite 61 and the second satellite 62) and is referred to
Show；Alternatively, presetting messaging parameter, when reaching call duration time, to corresponding interactive object, (first defends the relay station 63
Star 61 and the second satellite 62) send time service instruction.
It should be noted that the relay station includes for the satellite communication apparatus as described in above-described embodiment two, the satellite is logical
Specific structure, working principle and the brought technical effect of T unit and the description of above-described embodiment two are almost the same, herein
It repeats no more.
In the present embodiment, information is subjected to polarization code coded treatment before communicating, the noise that can reduce transmission process is dry
It disturbs, and is encoded using polarization code, reduce power consumption and data volume storage, reduce cost.
It being synchronized secondly, interactive satellite is carried out clock, each self-information is sent to relay station simultaneously by interactive satellite, in
After standing to the progress operation of received information, it is in the case that clock synchronizes in interactive satellite and simultaneously sends trunk information
To interactive satellite, the information of interactive object is obtained to received trunk information convenient for interactive satellite, shortening information interactive process needs
The time wanted improves information transfer efficiency.
Furthermore the first satellite is consistent with the message length that the second satellite is sent, and sends simultaneously, byte loss can be prevented
And improve information reliability.
Embodiment five：
Fig. 7 shows a kind of structure chart of service terminal of fifth embodiment of the invention offer, which includes：
Memory (memory) 71, processor (processor) 72, communication interface (Communications Interface) 73 and total
Line 74, the processor 72, memory 71, communication interface 73 complete mutual interactively communicate by bus 74.
Memory 71, for storing various data；
Specifically, memory 71 is used to store various data, such as data, received data in communication process etc., this
With no restriction to this, which further includes having multiple computer programs at place.
Communication interface 73, for the information transmission between the communication equipment of the service terminal；
Processor 72 is provided for calling the various computer programs in memory 71 with executing above-described embodiment one
A kind of satellite communication method, such as：
The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；
Operation and coding are carried out to received information, obtain trunk information；
The trunk information is sent to the first satellite and the second satellite simultaneously, is defended convenient for first satellite and second
Star carries out the information that inverse operation obtains interactive object based on the trunk information, and first satellite is handed over each other with the second satellite
Mutual object.
In the present embodiment, information is subjected to polarization code coded treatment before communicating, the noise that can reduce transmission process is dry
It disturbs, and is encoded using polarization code, reduce power consumption and data volume storage, reduce cost.
The present invention also provides a kind of memory, which is stored with multiple computer programs, multiple computer program
It is called by processor and executes a kind of method of satellite communication described in above-described embodiment one.
In the present invention, information is subjected to polarization code coded treatment before communicating, the noise jamming of transmission process can be reduced,
And encoded using polarization code, reduce power consumption and data volume storage, reduces cost.
It being synchronized secondly, interactive satellite is carried out clock, each self-information is sent to relay station simultaneously by interactive satellite, in
After standing to the progress operation of received information, it is in the case that clock synchronizes in interactive satellite and simultaneously sends trunk information
To interactive satellite, the information of interactive object is obtained to received trunk information convenient for interactive satellite, shortening information interactive process needs
The time wanted improves information transfer efficiency.
Furthermore the first satellite is consistent with the message length that the second satellite is sent, and sends simultaneously, byte loss can be prevented
And improve information reliability.
Those of ordinary skill in the art may be aware that described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions
It is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.
Professional technician can use different methods to achieve the described function each specific application, but
It is that such implementation should not be considered as beyond the scope of the present invention.The above description is merely a specific embodiment, but this hair
Bright protection scope is not limited thereto, anyone skilled in the art the invention discloses technical scope
It is interior, it can easily think of the change or the replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention
It shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of satellite communication method, which is characterized in that including：
The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；
Operation and coding are carried out to received information, obtain trunk information；
The trunk information is sent to the first satellite and the second satellite simultaneously, is based on convenient for first satellite and the second satellite
The trunk information carries out the information that inverse operation obtains interactive object, first satellite and the second satellite interactive object each other.
2. satellite communication method according to claim 1, which is characterized in that described to carry out operation volume to received information
Code, obtaining trunk information includes：
The received information of institute is decoded, corresponding decoded information is obtained；
Xor operation processing is carried out to the decoded information, obtains preliminary trunk information；
Polarization code coded treatment is carried out to the preliminary trunk information, obtains trunk information.
3. satellite communication method according to claim 1 or 2, which is characterized in that the first satellite of the reception and second defend
Further include before the information that star is simultaneously emitted by：
Time service instruction is issued to first satellite and the second satellite, so that first satellite and the second satellite progress clock are same
Step, the time service instruction carry the current clock information of sender.
4. satellite communication method according to claim 1 or 2, which is characterized in that it is described that operation is carried out to received information,
It is sent respectively to the first satellite after acquisition operation information, by operation information and the second satellite further includes before：
Time service instruction is issued to first satellite and the second satellite, so that first satellite and the second satellite progress clock are same
Step, the time service instruction carry the current clock information of sender.
5. satellite communication method according to claim 1, which is characterized in that described to be sent to the trunk information simultaneously
First satellite and the second satellite are specially：
The trunk information is sent to the first satellite and the second satellite simultaneously by broadcast channel.
6. a kind of satellite communication terminal, which is characterized in that including：
Receiving unit, the information being simultaneously emitted by for receiving the first satellite and the second satellite, the information are encoded by polarization code
Processing；
Processing unit obtains trunk information for carrying out operation and coding to received information；
Transmission unit is convenient for first satellite for the trunk information to be sent to the first satellite and the second satellite simultaneously
And second satellite the information that inverse operation obtains interactive object, first satellite and the second satellite carried out based on the trunk information
Interactive object each other.
7. a kind of relay station, which is characterized in that including satellite communication terminal as claimed in claim 6.
8. a kind of communication system, which is characterized in that including the relay station as shown in claim 7, connect with the relay station
First satellite and the second satellite, wherein：
Relay station described in first passing of satelline and second satellite carry out information exchange.
9. a kind of memory, the memory is stored with computer program, which is characterized in that the computer program is by processor
Execute following steps：
The information that the first satellite and the second satellite are simultaneously emitted by is received, the information passes through polarization code coded treatment；
Operation and coding are carried out to received information, obtain trunk information；
The trunk information is sent to the first satellite and the second satellite simultaneously, is based on convenient for first satellite and the second satellite
The trunk information carries out the information that inverse operation obtains interactive object, first satellite and the second satellite interactive object each other.
10. a kind of service terminal, including memory, processor and storage can transport in the memory and on the processor
Capable computer program, which is characterized in that the processor realizes such as claim 1 to 5 times when executing the computer program
The step of satellite communication method described in meaning one.
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| CN116208225A (en) * | 2022-12-20 | 2023-06-02 | 中国科学院空间应用工程与技术中心 | Satellite communication method and system based on network coding and modulation reflection |
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