CN109831243A - Full airspace multi-beam antenna satellite link forward pass and retransmission method - Google Patents
Full airspace multi-beam antenna satellite link forward pass and retransmission method Download PDFInfo
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- CN109831243A CN109831243A CN201910094592.0A CN201910094592A CN109831243A CN 109831243 A CN109831243 A CN 109831243A CN 201910094592 A CN201910094592 A CN 201910094592A CN 109831243 A CN109831243 A CN 109831243A
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Abstract
A kind of full airspace multi-beam antenna satellite link forward pass and retransmission method disclosed by the invention, it is desirable to provide one kind can obtain bigger coverage area, the forward pass and retransmission method of higher transfer rate.The present invention is achieved through the following technical solutions: baseband processing unit, Remote Radio Unit and/or the core net ground network equipment of strange land deployment are connect with the full airspace multi-beam phased array ground satellite station of respective position.When transmitting data, transmitting terminal ground network equipment send output optical signal to coupled earth station, it is converted to electric signal and serioparallel exchange is multiple-link satellite forward pass/return path signal, multiple signals are emitted by most forward pass/passback satellite by full airspace multi-beam phased array antenna.The earth station being connected with receiving end ground network equipment is formed simultaneously multiple reception wave beams by full airspace multi-beam phased array antenna, more forward pass/passback satellite-signal is received, and is exported by multiple signals parallel-serial conversion and after being transformed to optical signal to receiving end ground network equipment.
Description
Technical field
Forward pass and passback side the present invention relates to wireless communication field, in terrestrial cellular mobile communication based on satellite link
Method.
Background technique
In the deployment of terrestrial cellular mobile communications network, base station can be deployed in different geographical locations from core net,
Connection base station and core net realize that the link of data interaction is known as return link.Meanwhile in distributed base station, as group of base stations
It can also disperse to dispose with radio frequency remote unit RRU at the baseband processing unit BBU of unit, connection BBU and RRU realize that data are handed over
Mutual link is known as forward pass link.In general, return link or forward pass link mainly use the wire transmission side based on ground optical fiber
Case, program the disadvantages of there are at high cost, deployment cycle is long, and flexibility is poor, for temporarily building network, remote districts covering etc.
Deployment scenario is simultaneously improper.Using the terrestrial microwave passback of wireless transmission method or forward pass link pair, which form certain benefits
It fills, but still remains the problems such as transmission range is limited, be not suitable for passback or forward pass apart from king-sized deployment scenario.Satellite chain
Road is the possible passback of one kind or forward pass solution.Satellite link can provide the data interaction energy of large span in global range
Power is particularly suitable for the network deployment of the Special sections such as islands and reefs, overseas.Satellite forward pass refers to that deployment is defended respectively at BBU and RRU
Star forward pass earth station, Liang Chu forward pass earth station are bridged by forward pass satellite link, realize interaction of the data between BBU and RRU.
Satellite backhaul refers to disposing satellite backhaul earth station respectively at RRU and core net, earth station is returned at two and is defended by passback
Star bridge joint realizes interaction of the data between RRU and core net.
With the development of terrestrial cellular mobile communications network, forward pass and the data volume of passback are increasing in network, single
Satellite link is no longer satisfied the demand of the following high rate data transmission, and a plurality of forward pass and passback satellite link is needed to share biography at this time
Defeated pressure.In addition, the earth station of satellite link needs to have while connecting when same place is there are when two kinds of demands of forward pass and passback
It connects forward pass and returns the ability of satellite.But the earth station of present satellites forward pass link or return link cannot access sky simultaneously
Distribution biggish multi-satellite in domain is supported multichannel passback simultaneously or forward pass and is returned simultaneously weak with the ability of forward pass.Cause
How this efficiently accesses in airspace more satellites to promote passback forward pass ability and become an important problem.
In Space TT&C field, the fast development of satellite application demand to increase rapidly in the quantity of orbit aerocraft
Long, the TTC&T Technology based on traditional parabola antenna is no longer satisfied full airspace (0~360 ° of orientation, 0~90 ° of pitching)
The demand of interior multiple target (such as: 32 targets) telemetry communication simultaneously.For this purpose, being directed to full airspace multi-beam phased array day both at home and abroad
Line expands positive research, and this antenna is formed simultaneously multiple wave beams, one space flight of each beam position in full airspace
Device may be implemented simultaneously to Multi target TT&C and communication.Therefore, the characteristics of being based on the full airspace of this phased array antenna, multi-beam,
It is applied in satellite forward pass and passback, proposes a kind of new satellite forward pass and retransmission method, will there is very big practical meaning
Justice.
Summary of the invention
The purpose of the present invention is for satellite forward pass and returning the weak problem of ability, providing one kind, that full airspace may be implemented is more
Forward pass, full airspace multichannel return simultaneously simultaneously, full airspace returns simultaneously and forward pass on road, thus the bigger coverage area of acquisition, more
High transmission rate and lower the device is complicated degree, the full airspace multi-beam antenna based on full airspace multi-beam phased array antenna are defended
Stellar chain road forward pass and retransmission method.
Above-mentioned purpose of the invention can be reached by the following measures, before a kind of full airspace multi-beam antenna satellite link
Pass and retransmission method, with following technical characteristic: by the baseband processing unit BBU of strange land deployment, radio frequency remote unit RRU and/
Or core net ground network equipment is connect with the full airspace multi-beam phased array ground satellite station of respective position；When needing to transmit number
According to when, transmitting terminal ground network equipment send the optical signal of output to coupled full airspace multi-beam phased array satellite ground
It stands, converts optical signals to digital electric signal and serioparallel exchange is multiple-link satellite forward pass/return path signal；It is more by full airspace simultaneously
Beam phased array antenna forms multiple launching beams, and multiple-link satellite link forward pass/return path signal is emitted at most forward pass/passback
Satellite；The full airspace multi-beam phased array ground satellite station being connected with receiving end ground network equipment passes through full airspace multi-beam phase
Control array antenna is formed simultaneously multiple reception wave beams, receives more forward pass/passback satellite-signal, and by more forward pass/passback satellite
Signal parallel-serial conversion and output is transformed to after optical signal to receiving end ground network equipment.
The forward pass/passback satellite can in full airspace (0~360 ° of orientation, 0~90 ° of pitching) range Arbitrary distribution.
The full airspace multi-beam phased array ground satellite station is set by full airspace multi-beam phased array antenna and signal conversion
Standby composition.
The bay of the full airspace multi-beam phased array antenna is distributed in spherical or hemispheric antenna array, uses
Digital beam-forming technology is arbitrarily directed toward in full airspace (0~360 ° of orientation, 0~90 ° of pitching) and is formed simultaneously multiple wave beams.
The present invention has the effect that compared with the prior art
The bay of full airspace multi-beam phased array antenna is distributed in spherical or hemispherical antenna array by the present invention, and is used
Digital beam-forming technology, can full airspace (0~360 ° of orientation, 0~90 ° of pitching) be arbitrarily directed toward and form wave beam, thus can be with
Forward pass/passback the satellite for covering full spatial distribution, compared to can only part airspace covering the case where, expand coverage area, mention
Satellite forward pass/passback availability is risen；
The present invention is used using digital beam-forming technology, the multiple wave beams formed in full airspace multi-beam phased array antenna,
More forward pass/passback satellite can be connected simultaneously, it is assumed that it is R bps that single forward pass/passback satellite, which is connected up to transmission rate, then
N forward pass/passback satellite is then up to transmission rate N*R bps, the case where compared to single satellite forward pass/passback, realizes satellite
The multiplication of forward pass/upstream transmission rate；
The present invention connects forward pass satellite and passback satellite using multi-beam simultaneously, has forward pass earth station and returns earth station
Function is, it can be achieved that satellite forward pass and passback simultaneously is reduced the case where deployment respectively compared to forward pass earth station and passback earth station
The device is complicated degree.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of full airspace multi-beam phased array ground satellite station.
Fig. 2 is the realization configuration diagram of full airspace multi-beam phased array antenna.
Fig. 3 is the schematic diagram that full airspace multi-beam phased array antenna forms multiple wave beams.
Fig. 4 is the full airspace multichannel forward pass schematic diagram based on full airspace multi-beam phased array antenna.
Fig. 5 is the full airspace multichannel passback schematic diagram based on full airspace multi-beam phased array antenna.
Fig. 6 is the full airspace based on full airspace multi-beam phased array antenna while passback and forward pass schematic diagram.
Specific embodiment
- Fig. 3 refering to fig. 1.According to the present invention, by strange land deployment baseband processing unit BBU, radio frequency remote unit RRU and/
Or core net ground network equipment is connect with the full airspace multi-beam phased array ground satellite station of respective position；When needing to transmit number
According to when, transmitting terminal ground network equipment send the optical signal of output to coupled full airspace multi-beam phased array satellite ground
It stands, converts optical signals to digital electric signal and serioparallel exchange is multiple-link satellite forward pass/return path signal；It is more by full airspace simultaneously
Beam phased array antenna forms multiple launching beams, and multiple-link satellite link forward pass/return path signal is emitted at most forward pass/passback
Satellite；The full airspace multi-beam phased array ground satellite station being connected with receiving end ground network equipment passes through full airspace multi-beam phase
Control array antenna is formed simultaneously multiple reception wave beams, receives more forward pass/passback satellite-signal, and by more forward pass/passback satellite
Signal parallel-serial conversion and output is transformed to after optical signal to receiving end ground network equipment.
The full airspace multi-beam phased array ground satellite station is by signal conversion equipment and full airspace multi-beam phased array day
Line composition.A kind of realization framework of the full airspace multi-beam phased array antenna is by digital beam-forming, radio-frequency channel and antenna
Array element composition.The bay of the full airspace multi-beam phased array antenna is distributed in spherical or hemispheric antenna array,
It is arbitrarily directed toward using digital beam-forming technology in full airspace (0~360 ° of orientation, 0~90 ° of pitching) and forms N number of wave beam.
Refering to Fig. 4.In an alternate embodiment of the invention, the full airspace multichannel based on full airspace multi-beam phased array antenna is same
Shi Qianchuan is realized in the following manner: core net, BBU and RRU form terrestrial cellular mobile communications network, between core net and BBU
Return data interaction is carried out using wired optical fiber link, forward data is carried out by a plurality of forward pass satellite link between BBU and RRU
Interaction.
The full airspace multi-beam phased array ground satellite station being connected with RRU is defined as ground node 1, and what is be connected with BBU is complete
Airspace multi-beam phased array ground satellite station is defined as ground node 2.It is illustrated with transmitting data instance from RRU to BBU.Ground
The RRU optical signal exported is converted to digital electric signal to face node 1 and serioparallel exchange is multiple-link satellite forward pass signal, by complete empty
Domain multi-beam phased array antenna is formed simultaneously launching beam A, launching beam C, launching beam E, sends forward pass signal respectively to preceding
Satellite 1, forward pass satellite 2, forward pass satellite 3 are passed, is forwarded on the laggard planet of signal of 1 receiving antenna launching beam A of forward pass satellite, it is preceding
It passes and is forwarded on the laggard planet of signal of 2 receiving antenna launching beam C of satellite, the signal of 3 receiving antenna launching beam E of forward pass satellite
It is forwarded on laggard planet.Ground node 2 is formed simultaneously by full airspace multi-beam phased array antenna to be received wave beam B, receives wave beam
D, wave beam F is received, the forward signal of forward pass satellite 1, forward pass satellite 2, forward pass satellite 3 is received respectively, before the multichannel received
It passes satellite-signal parallel-serial conversion and exports after being transformed to optical signal to BBU.
Refering to Fig. 5.In optional another embodiment, the full airspace based on full airspace multi-beam phased array antenna is more
Road returns realize in the following manner simultaneously: core net, BBU and RRU form terrestrial cellular mobile communications network, between BBU and RRU
Forward data interaction is carried out using wired optical fiber link, is returned between core net and BBU by a plurality of passback satellite link
Data interaction.The full airspace multi-beam phased array ground satellite station being connected with BBU is defined as ground node 1, is connected with core net
Full airspace multi-beam phased array ground satellite station be defined as ground node 2.To be carried out from BBU to core network data instance
Explanation.The BBU optical signal exported is converted to digital electric signal to ground node 1 and serioparallel exchange is multiple-link satellite return path signal,
It is formed simultaneously launching beam A, launching beam C, launching beam E by full airspace multi-beam phased array antenna, sends passback respectively
Signal extremely passback satellite 1, passback satellite 2, passback satellite 3.Return the laggard planet of signal of 1 receiving antenna launching beam A of satellite
Upper forwarding.It returns and is forwarded on the laggard planet of signal of 2 receiving antenna launching beam C of satellite, passback satellite 3 receives the letter of wave beam E
It is forwarded on number laggard planet.Ground node 2 is formed simultaneously receiving antenna launching beam by full airspace multi-beam phased array antenna
B, D, F receive passback satellite 1, passback satellite 2, the forward signal for returning satellite 3 respectively, the multichannel received are returned satellite
Signal parallel-serial conversion and output is transformed to after optical signal to core net.
Refering to 6.In optional another embodiment, the full airspace based on full airspace multi-beam phased array antenna is simultaneously
Passback and forward pass are realized in the following manner: core net, BBU and RRU composition terrestrial cellular mobile communications network, between BBU and RRU
Forward data interaction is carried out by 1 forward pass satellite link, is returned between core net and BBU by 1 passback satellite link
Pass data interaction.The full airspace multi-beam phased array ground satellite station being connected with RRU is defined as ground node 1, is connected with BBU
Full airspace multi-beam phased array ground satellite station is defined as ground node 2, the full airspace multi-beam phased array being connected with core net
Ground satellite station is defined as ground node 3.To be illustrated from RRU by BBU to core network data instance.Ground node
1 is converted to the forward pass optical signal of RRU output the satellite forward pass signal of digital electric signal form, phased by full airspace multi-beam
Array antenna forms launching beam A, and sends forward pass signal to forward pass satellite.The laggard planet of signal of forward pass satellite reception wave beam A
Upper forwarding.Ground node 2 is formed by full airspace multi-beam phased array antenna and receives wave beam B, and the forwarding letter of forward pass satellite is received
Number, it exports after the forward pass satellite-signal received is transformed to optical signal to BBU.Meanwhile ground node 2 is returned what BBU was exported
The satellite backhaul signal that optical signal is converted to digital electric signal form is passed, is formed and is emitted by full airspace multi-beam phased array antenna
Wave beam C, and communication number is sent back to passback satellite.It returns and is forwarded on the laggard planet of signal of satellite reception wave beam C.Ground node
3 form reception wave beam D by full airspace multi-beam phased array antenna, receive the forward signal of passback satellite, and what will be received returns
It passes after satellite-signal is transformed to optical signal and exports to core net.
The forward pass satellite, passback satellite and empty day user can in the full airspace coverage area Arbitrary distribution.
The embodiment of the present invention has been described in detail above, and specific embodiment used herein carries out the present invention
It illustrates, above embodiments are merely used to help understand method and apparatus of the invention；Meanwhile for the general technology of this field
Personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this theory
The content of bright book embodiment should not be construed as limiting the invention.
Claims (10)
1. a kind of full airspace multi-beam antenna satellite link forward pass and retransmission method have following technical characteristic: strange land are disposed
Baseband processing unit BBU, radio frequency remote unit RRU and/or core net ground network equipment and respective position full airspace it is more
The connection of beam phased array ground satellite station；When needing to transmit data, transmitting terminal ground network equipment send the optical signal of output
To coupled full airspace multi-beam phased array ground satellite station, converts optical signals to digital electric signal and serioparallel exchange is
Multiple-link satellite forward pass/return path signal；Multiple launching beams are formed by full airspace multi-beam phased array antenna simultaneously, multichannel is defended
Stellar chain road forward pass/return path signal transmitting at most forward pass/passback satellite；The full airspace being connected with receiving end ground network equipment is more
Beam phased array ground satellite station is formed simultaneously multiple reception wave beams by full airspace multi-beam phased array antenna, before receiving more
Biography/passback satellite-signal, and export by more forward pass/passback satellite-signal parallel-serial conversion and after being transformed to optical signal to receiving end
Ground network equipment.
2. full airspace multi-beam antenna satellite link forward pass as described in claim 1 and retransmission method, it is characterised in that: described
Full airspace multi-beam phased array ground satellite station is made of full airspace multi-beam phased array antenna and signal conversion equipment.
3. full airspace multi-beam antenna satellite link forward pass as described in claim 1 and retransmission method, it is characterised in that: airspace
The bay of multi-beam phased array antenna is distributed in spherical or hemispheric antenna array, and digital beam-forming is using number
Beam forming technique is arbitrarily directed toward in full airspace and forms N number of wave beam.
4. full airspace multi-beam antenna satellite link forward pass as described in claim 1 and retransmission method, it is characterised in that: forward pass
Satellite, passback satellite Arbitrary distribution within the scope of full airspace.
5. full airspace multi-beam antenna satellite link forward pass as described in claim 1 and retransmission method, it is characterised in that: core
Net, BBU and RRU form terrestrial cellular mobile communications network, carry out passback number using wired optical fiber link between core net and BBU
According to interaction, forward data is carried out by a plurality of forward pass satellite link between BBU and RRU and is interacted.
6. full airspace multi-beam antenna satellite link forward pass as described in claim 1 and retransmission method, it is characterised in that: with
RRU connected full airspace multi-beam phased array ground satellite station is defined as ground node 1, the full airspace multi-beam being connected with BBU
Phased array ground satellite station is defined as ground node 2, ground node 1 by the RRU optical signal exported be converted to digital electric signal and
Serioparallel exchange is multiple-link satellite forward pass signal, is formed simultaneously launching beam A, transmitted wave by full airspace multi-beam phased array antenna
Beam C, launching beam E send forward pass signal to forward pass satellite 1, forward pass satellite 2, forward pass satellite 3 respectively.
7. full airspace multi-beam antenna satellite link forward pass as claimed in claim 6 and retransmission method, it is characterised in that:: it is preceding
It passes and is forwarded on the laggard planet of signal of 1 receiving antenna launching beam A of satellite, the signal of 2 receiving antenna launching beam C of forward pass satellite
It forwards on laggard planet, is forwarded on the laggard planet of signal of 3 receiving antenna launching beam E of forward pass satellite.
8. full airspace multi-beam antenna satellite link forward pass as claimed in claim 7 and retransmission method, it is characterised in that:: ground
Face node 2 is formed simultaneously by full airspace multi-beam phased array antenna to be received wave beam B, receives wave beam D, receives wave beam F, is connect respectively
Receive the forward signal of forward pass satellite 1, forward pass satellite 2, forward pass satellite 3, the multichannel forward pass satellite-signal parallel-serial conversion that will be received
And it exports after being transformed to optical signal to BBU.
9. full airspace multi-beam antenna satellite link forward pass as described in claim 1 and retransmission method, it is characterised in that: core
Net, BBU and RRU form terrestrial cellular mobile communications network, carry out forward pass number by 1 forward pass satellite link between BBU and RRU
According to interaction, return data is carried out by 1 passback satellite link between core net and BBU and is interacted；The full airspace being connected with RRU is more
Beam phased array ground satellite station is defined as ground node 1, and the full airspace multi-beam phased array satellite ground being connected with BBU is stood firm
Justice is ground node 2, and the full airspace multi-beam phased array ground satellite station being connected with core net is defined as ground node 3.
10. full airspace multi-beam antenna satellite link forward pass as claimed in claim 9 and retransmission method, it is characterised in that: ground
The RRU forward pass optical signal exported is converted to the satellite forward pass signal of digital electric signal form by face node 1, passes through the more waves in full airspace
Beam phased array antenna forms launching beam A, and sends forward pass signal to forward pass satellite；After the signal of forward pass satellite reception wave beam A
Forwarded on star；Ground node 2 is formed by full airspace multi-beam phased array antenna and receives wave beam B, and forward pass satellite is received
Forward signal exports after the forward pass satellite-signal received is transformed to optical signal to BBU；Meanwhile ground node 2 is defeated by BBU
Passback optical signal out is converted to the satellite backhaul signal of digital electric signal form, passes through full airspace multi-beam phased array antenna shape
At launching beam C, and communication number is sent back to passback satellite；It returns and is forwarded on the laggard planet of signal of satellite reception wave beam C；Ground
Face node 3 is formed by full airspace multi-beam phased array antenna and receives wave beam D, is received the forward signal of passback satellite, will be received
To passback satellite-signal be transformed to after optical signal output to core net.
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Cited By (3)
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| CN116389377A (en) * | 2023-03-06 | 2023-07-04 | 中国电信股份有限公司卫星通信分公司 | Satellite communication method and system and electronic equipment |
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Application publication date: 20190531 |