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WO2018146750A1 - Dispositif de relais de satellite - Google Patents

Dispositif de relais de satellite Download PDF

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Publication number
WO2018146750A1
WO2018146750A1 PCT/JP2017/004604 JP2017004604W WO2018146750A1 WO 2018146750 A1 WO2018146750 A1 WO 2018146750A1 JP 2017004604 W JP2017004604 W JP 2017004604W WO 2018146750 A1 WO2018146750 A1 WO 2018146750A1
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WO
WIPO (PCT)
Prior art keywords
band
input
command
switch matrix
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/004604
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English (en)
Japanese (ja)
Inventor
俊之 久世
佐々木　剛
和英 樋口
二葉 江島
輝巳 須永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2018566690A priority Critical patent/JP6656432B2/ja
Priority to PCT/JP2017/004604 priority patent/WO2018146750A1/fr
Publication of WO2018146750A1 publication Critical patent/WO2018146750A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/2041—Spot beam multiple access

Definitions

  • the present invention relates to a satellite repeater, and more particularly to a satellite repeater used in a satellite communication system.
  • a relay satellite equipped with a digital channelizer has a function of dividing an input beam into a plurality of subchannels, mapping the output beams on a subchannel basis, combining them, and outputting the result.
  • beam input and beam output beyond the input / output band planned in advance can not be performed, there has been a problem that if service traffic during the operation period changes significantly, it can not cope with input / output of these beams.
  • a satellite repeater supporting multiple beams (hereinafter referred to as a multibeam satellite repeater) is configured using the maximum traffic of beams predicted during the operation period, a large-scale digital channelizer having many input / output ports There was a problem of requiring
  • the input and output beams exceeding the traffic planned in advance are accommodated in the satellite relay apparatus, whereby the input / output port Even with a small number of digital channelizers, it is possible to construct a satellite repeater capable of coping with traffic variations without reducing the number of beams accommodated.
  • the input / output band is determined by the maximum traffic planned in advance, and the input / output band for each beam is set below the digital channelizer input / output band.
  • the digital channelizer input / output port band In order to divide the input beam band 3 GHz into six according to 500 MHz, the GW10 station occupies the input port 60 port of the digital channelizer, and even if there is a 60 beam user service area, the number of beams that can be accommodated is limited to 20 beams Be done.
  • the number of satellites can be reduced, so temporary traffic fluctuation (maximum traffic utilization) can be reduced by using other beams.
  • the present invention has been made to solve the above problems, and enables beam band input / output beyond the digital channelizer input band, shares the digital channelizer input / output port with all beams, and has a fixed period of time
  • the satellite repeaters can input traffic exceeding the digital channelizer's input / output bandwidth without reducing the number of beams that can be accommodated by exchanging the input / output bandwidth between beams. It aims to be realized.
  • a satellite repeater comprises an input-side flexible switch matrix for dividing an input beam into a plurality of frequency bands and converting the frequency to a digital channelizer input frequency, and the digital channelizer.
  • An output-side flexible switch matrix is provided which combines the plurality of output signals exchanged into a continuous band.
  • Satellite repeaters capable of coping with increased traffic, and even when using a digital channelizer with a small number of input / output ports, it is possible to perform large-capacity communication without reducing the number of beams accommodated. .
  • FIG. 1 is a block diagram showing a configuration of a satellite relay device according to Embodiment 1;
  • FIG. 2 is a diagram showing a signal flow path when an input / output band is divided / combined in a flexible switch matrix constituting a satellite relay device in FIG.
  • FIG. 16 is a block diagram conceptually showing an example of beam accommodation based on average traffic on the input side of the second embodiment.
  • FIG. 13 is a block diagram conceptually showing an example of beam accommodation based on the maximum traffic on the input side of the satellite relay apparatus according to Embodiment 2.
  • FIG. 16 is a block diagram conceptually showing an example of beam accommodation based on average traffic on the output side of the satellite relay apparatus according to Embodiment 2.
  • FIG. 16 is a block diagram conceptually showing an example of beam accommodation based on 3 GHz traffic on the output side of the satellite relay apparatus according to Embodiment 2.
  • FIG. 16 is a block diagram showing a configuration of an RF channelizer that can be used instead of the combination of the tunable down converter and the BPF in the satellite relay apparatus in FIG. 1 of the third embodiment.
  • FIG. 20 is a block diagram showing a satellite communication system including the satellite relay device according to Embodiment 4 and a ground device communicatively connected to the satellite relay device.
  • FIG. 16 is a flowchart showing a control flow of the satellite relay device in the fourth embodiment. It is a figure which shows the control sequence of the satellite communication system in FIG. It is a sequence diagram for UL use band information acquisition in ground equipment.
  • the satellite relay apparatus according to the first embodiment includes a flexible switch matrix (Flexible SW Matrix) 9, a digital channelizer (Digital CHZ) 10, and a flexible switch matrix 11. Ru.
  • the satellite relay apparatus according to the first embodiment is mounted on a relay satellite as a satellite payload that constitutes a flexible payload.
  • the input-side flexible switch matrix 9 includes a switch matrix unit SWM1 configured of hybrid units (HYB: Hybrid) 16 to 19 and selectors (SELECTOR) 20 to 23, and a tuner that performs frequency conversion to an arbitrary frequency.
  • a digital channelizer 10 comprising a Bull down converter (Tunable DCON) 24 to 27 and a Band Pass Filter (BPF) 28 to 31 for mapping a subchannel of an arbitrary input beam to a subchannel of an arbitrary output beam. Put on the input side.
  • the output-side flexible switch matrix 11 of the present invention includes tunable upconverters (Tunable UPCON) 48 to 51, frequency pass filters 52 to 55, and a selector for frequency-converting the digital channelizer output signal to an arbitrary band of the output beam.
  • a switch matrix unit SWM2 is formed of 56 to 59 and hybrid units 60 to 63, and is placed on the output side of the digital channelizer 10.
  • the band pass filters 28 to 31 of the flexible switch matrix 9 on the input side are included in the flexible switch matrix 9 when the band restriction and the spectrum suppression are required.
  • the band pass filters 52 to 55 of the output side flexible switch matrix 11 are included in the flexible switch matrix 11 when band constraint and spectrum suppression are required.
  • the output signals from any of the output ports 40 to 43 (Output Ports # 1 to # 4) of the digital channelizer 10 are received at the input ports 44 to 47, and tunable up is performed.
  • the frequency is converted (up converted) by the converter (Tunable UPCON), switched through the band pass filters 52 to 55, and switched by the switch / matrix unit SWM2, and then output as arbitrary output beams 64 to 67-Beam # 1 to # 4. .
  • the switch / matrix unit SWM1 is composed of hybrid units (HYB) 16 to 19 which are distributors and selectors (SELECTOR) 20 to 23.
  • the switch / matrix unit SWM2 is configured of selectors (SELECTOR) 56 to 59 and hybrid units (HYB) 60 to 63.
  • These switch / matrix units SWM1 and SWM2 can also be configured by a hybrid unit and a passive switch such as C-SW or T-SW.
  • the command control unit A13 of the input-side flexible switch matrix 9 designates a path from the hybrid unit through the control lines A50 to A53.
  • the selectors 20 to 22 in FIG. 2 respectively select paths from the hybrid unit 16 in order to divide the input signal band of Beam # 1_12 into three, and the selector 23 inputs the signal from Beam # 4_A77 without dividing it. Therefore, the path from the hybrid unit 19 is selected.
  • the command control unit A13 of the flexible switch matrix (input side) 9 converts it by the control line A54 in order to divide the input frequency band of the beam 69-Beam # 1 Bandwidth into three frequency bands 70 to 72.
  • the frequency "FcforBW # 1 (A90) -IF” is set, the conversion frequency “FcforBW # 2 (A91) -IF” is set at the control line A55, and the conversion frequency “FcforBW # 3 (A92)” is set at the control line A56.
  • the command control unit A 15 of the flexible switch matrix (output side) 11 up-converts an output signal of IF (Intermediate Frequency) frequency into an output RF (Radio Frequency) signal and combines three bands into one band.
  • the conversion frequency "FcforBW # 1 (A95) -IF” is set in the control line A58
  • the conversion frequency “FcforBW # 2 (A96) -IF” is set in the control line A59
  • the control line A60 Set the conversion frequency “FcforBW # 3 (A97) -IF”.
  • the command control unit A 15 of the flexible switch matrix (output side) 11 performs switch setting of the selectors 56 to 59 through the control lines A 62 to A 65.
  • control lines A62 to 64 paths to the hybrid unit 60 are set in selectors 56 to 58 respectively to form a path A94, and in the hybrid unit 60, an input IF band -73, an input IF band -74, and an input IF band Output beam 80-Beam # 1 Bandwidth of the continuous band which respectively becomes band BW # 1-77, band BW # 2-78, and band BW # 3-79 respectively corresponding to -75.
  • the RF signal input by beam 69-Beam # 1 Bandwidth is divided into three bands, input to the input ports 36 to 38 of the digital channelizer 10 at the IF frequency, and the output port 40 to the digital channelizer 10
  • the signals output from 42 are combined by the hybrid unit 60 through selectors 56 to 58, and output as a beam 80-Beam # 1 Bandwidth, which is an RF signal of the beam 64-Beam # 1.
  • the wide band signal 69 input from the beam 12-Beam # 1 is all selectors Distribute to 20-23.
  • the signals of the beams 12-Beam # 1 respectively selected by the selectors 20-22 designated by the control lines A50-A52 are sent to the tunable down converters 24-26.
  • the center frequencies of the signal 70 of the band BW # 1, the signal 71 of the band BW # 2, and the signal 72 of the band BW # 3 obtained by dividing the band of Beam # 1 (beam 69-Beam # 1 Bandwidth) into three respectively.
  • the digital channelizer 10 filters the signals that have been band-pass filters 28-30 into bands 70-72.
  • the 750 MHz band signal input to beam # 1-12 is divided into three by the switch / matrix unit SWM1, and input to the tunable down converters 24 to 26, respectively.
  • the tunable downconverter 24 frequency-converts an input beam with a center frequency of 20 GHz into a 750 MHz beam (conversion frequency 19.25 GHz)
  • the tunable down-converter 25 frequency converts an input beam with a center frequency of 20 GHz into a 1000 MHz beam (conversion
  • the tunable converter 26 frequency-converts an input beam with a center frequency of 20 GHz into a 1250 MHz beam (conversion frequency of 18.75 GHz).
  • band-pass filters 28 to 30 having a center frequency of 1 GHz are used to filter in the 250 MHz band, respectively, and bands BW # 1 to BW # 3 of the 1 GHz center frequency are extracted from output ports 32 to 34, Input to the channelizer input port InputPort # 1-36 to InputPort # 3-38 in the 250 MHz band.
  • the input band signal which is variable according to the user traffic can be input channel band of the digital channelizer 10 at the maximum by the number of input ports no matter which beam is input. There is an effect that the beam band that can be accommodated can be extended to the calculated beam band.
  • the bandwidth BW # 1 to BW # of the IF frequency from the output ports 40 to 42 (Output Ports # 1 to # 3) of the digital channelizer 10 Three signals 73 to 75 are output.
  • the signals 73 to 75 of the bands BW # 1 to BW # 3 of these IF frequencies are converted differently so as to be the signals 77 to 79 of the bands BW # 1, # 2, and # 3 of the output beam 64-Beam # 1, respectively.
  • the frequency is upconverted in a tunable upconverter (Tunable UPCON) 48-50 and filtered using a band pass filter 52-54.
  • the filtered beams 77 to 79 are combined by the hybrid unit 60 via selectors 56 to 58 to generate a beam 80-Beam # 1 of a continuous output frequency band.
  • the 1 GHz center frequency of the 250 MHz band signal 73 output from Output Port # 1-40 of the digital channelizer 10 is frequency converted to 9.75 GHz (conversion frequency 8.75 GHz) by the tunable up converter 48, and the Output Port
  • the 1 GHz center frequency of the 250 MHz band signal 74 output from # 2-41 is frequency converted to 10 GHz (conversion frequency 9 GHz) by the tunable up converter 49, and 1 GHz of the 250 MHz band signal 75 output from OutputPort # 3-42
  • the center frequency is frequency converted to 10.25 GHz (conversion frequency 9.25 GHz) by the tunable up converter 50.
  • these frequency converted signals are subjected to spurious suppression by the band pass filters 52 to 54 as necessary, and these signals are synthesized by the hybrid unit 60 via the switch / matrix unit SWM 2 to obtain a 10 GHz center frequency.
  • Output a beam 80-Beam # 1 Bandwidth of 750 MHz.
  • the band of the output beams 64 to 67-Beam # 1 to # 4 has an effect of enabling output of variable band signals up to the output port band of the digital channelizer 10 ⁇ the number of output ports.
  • PF pre-select filter
  • LNA Low Noise AMP
  • a satellite relay apparatus constituting a flexible payload according to a second embodiment of the present invention is a satellite relay apparatus having the maximum traffic (band) of an input beam in the satellite relay apparatus provided with the flexible switch matrix of the first embodiment.
  • the satellite repeater is configured with the average traffic of the input beam and the maximum traffic is required with any beam, the I / O port of the digital channelizer shared by all beams is used instead of By matching, even if a digital channelizer with a small number of input / output ports is used, the number of beams that can be accommodated can be increased.
  • the flexible switch matrix and the digital channelizer port are shared.
  • 60 ports of the digital channelizer's input port will be used only by GW stations, and users other than GW The number of ports allocated to the beam will be 20.
  • the input / output port of the digital channelizer without real traffic or the priority If the average traffic of the GW is 1 GHz, the number of ports used by 10 GW stations is limited to 20 ports by using the I / O port of the digital channelizer used by the lower beam to accommodate the maximum traffic. In addition, 60 ports can be allocated to user beams other than the GW.
  • the beam accommodation method on the input side of the second embodiment will be described with reference to FIGS. 3 and 4.
  • the flexible switch matrix on the output side is omitted for simplification of the description.
  • Each of these flexible switch matrices is similar in configuration to that of the first embodiment.
  • a flexible switch matrix 80 on the input side accommodates, for example, 10 GW stations of 1 GHz in average traffic and 60 user beams of 500 MHz band in a flexible switch matrix 80 on the input side using an input / output 80 port digital channelizer 81 of 500 MHz band Shows the configuration of the flexible switch matrix.
  • the flexible switch matrix 80 has Input Ports # 1 to # 70 at input ports and Output Ports # 1 to # 80 at output ports.
  • the output ports # 1 to # 80 are connected to the input port Input ports # 1 to # 80 of the digital channelizer 81.
  • the 1 GHz band of the GW BEAM # 1-82 GW is input to the input port # 1-86 of the flexible switch matrix 80.
  • the GW BEAM # 1_82 input to the input port # 1-86 of the flexible switch matrix 80 is divided into two bands of 500 MHz by the flexible switch matrix 80, and the output port # 1-90 and the output port # 2 After being outputted from -91, they are inputted to the input port # 1-96 and the input port # 2-97 of the digital channelizer 81.
  • the output port of the flexible switch matrix 80 on the input side is logically connected to the input port.
  • GW beam # 1_82 of 3 GHz is frequency-divided (500 MHz ⁇ 6) in flexible switch matrix 80, and output from digital channelizer 81 through output ports 90, 91, 104 to 107 of flexible switch matrix 80.
  • the data is input to input ports 96, 97, 111-114.
  • the beams utilizing the output ports 104 to 107 of the flexible switch matrix 80 and the input ports 111 to 114 of the digital channelizer 81 can not connect the input from the beam to the channelizer 81.
  • the output port of the flexible switch matrix 80 need not be a physically continuous port, but may be any port of the flexible switch matrix 80.
  • a flexible switch matrix of beams which can not be used by other beams or can be interrupted.
  • the output port of it is possible to input to the digital channelizer of the bandwidth above the average traffic.
  • the input port of the digital channelizer 81 is allocated based on 1 GHz of GW average traffic, compared to the case of GW10 station + 20 user beam accommodation when the input port of the digital channelizer 81 is allocated based on 3 GHz of GW maximum traffic,
  • the GW10 station + 60 user beams can be accommodated by adopting a method of interchanging the input port of the digital channelizer with all beams.
  • the input port of the digital channelizer is shared by using the flexible switch matrix as compared with the satellite repeater using the input port of the digital channelizer at maximum traffic.
  • the number of input beams can be increased.
  • the output side beam accommodation method according to the second embodiment will be described with reference to FIGS. 5 and 6.
  • the flexible switch matrix 200 on the output side is omitted for simplification of the description.
  • the configuration of these flexible switch matrices 200 is similar to that of the flexible switch matrix 11 of the first embodiment.
  • the GW output beam combines 500 MHz band signals output from the two output ports of the digital channelizer 81 by the flexible switch matrix 200 on the output side, and outputs it with a 1 GHz beam.
  • Output ports Output port # 1 to # 80 (-203 to 208) of the digital channelizer 81 are connected to input ports # 1 to # 80 (-209 to 214) of the flexible switch matrix 200.
  • Output ports # 1 to # 20 (-203 to 206) corresponding to 201 GWports (20 ports) in the digital channelizer 81 are subjected to frequency conversion (up conversion) by the flexible switch matrix 200 and then synthesized into a 1 GHz band. And output ports Output from ports # 1 to # 10 (-215 to 216) as GW beams of 10 stations. Also, Output Ports # 21 to # 80 (-207 to 208) corresponding to 202 Userports (60 ports) in the digital channelizer 81 are frequency converted (up converted) by the flexible switch matrix 200, and then output ports Output It is output as a 500 MHz user beam from Port # 11 to # 70 (-217 to 218).
  • the output port Output Port # 1 to # 1 of the digital channelizer 81 corresponding to 201 GWports (20 ports)
  • Outputs from Output Ports # 21 to # 24 (-207 to 236) corresponding to parts of 20 (-203, 219, 230 to 233, 220, 206) and 202 Userports (60 ports) are the flexible switch matrix 200.
  • Port # 1 to # 24 (-209 to 240, 222, 212, and 213 to 243).
  • These received signals are frequency converted (up converted) to a continuous band by the flexible switch matrix 200, and then combined into a 1 GHz band, and output ports Output Port # 1 to # 10 (-215 to 216) ) Are output as GW beams of 10 GHz stations respectively. Also, the remaining Output Ports # 25 to # 80 (-237 to 208) at 202 Userports (60 ports) of the digital channelizer 81 are frequency converted (up converted) by the flexible switch matrix 200, and then the output port Output It is output as a 500 MHz user beam from any of the ports # 11 to # 70 (-217 to 218).
  • the output port of the flexible switch matrix 200 corresponding to a beam which is not used by other beams or which can be interrupted. Enables output to a digital channelizer in a band higher than traffic. Also, at this time, the output port of the digital channelizer 81 does not have to be a physically continuous port, but may be any output port.
  • the output port of the digital channelizer 81 is allocated based on 1 GHz of GW average traffic, compared with the case of GW10 station + 20 user beam accommodation when the output port of the digital channelizer 81 is allocated based on 3 GHz of GW maximum traffic,
  • the GW needs up to 3 GHz average traffic, it is possible to accommodate the GW10 station + 60 user beams by adopting the method of interchanging the output port of the digital channelizer with all the output beams.
  • the flexible switch matrix is used to share the digital channelizer output port as compared with the satellite repeater using the digital channelizer output port for maximum traffic.
  • the number of output beams can be increased.
  • the number of output beams that can be accommodated can be increased without increasing the number of output ports of the digital channelizer, and it is possible to adopt an inexpensive satellite repeater configuration.
  • the Jamming-resistant flexible is achieved by replacing the downconverter performing frequency conversion of the flexible switch matrix on the input side with the RF channelizer. Switches and switch matrix configurations are possible.
  • the configuration of the RF channelizer is shown in FIG.
  • the RF channelizer A100 shown in FIG. 7 is provided with a high pass filter HPF_A104 and a low pass filter LPF_A105 in the IF frequency band, and the frequency conversion sections A101 to A103 convert the frequency arbitrarily, thereby bandpassizing the high pass filter HPF_A104 and the low pass filter LPF_A105.
  • the frequency conversion units A101 to A103 can be converted to an arbitrary frequency (tunable), so that the rejection frequency of the band pass filter can be made variable.
  • the input beam A 111-in FIG. 7 can be obtained by replacing the tunable down converters 24 to 27 and the band pass filters 28 to 31 of the input side flexible switch matrix in the first embodiment and the second embodiment with an RF channelizer.
  • the conversion frequency of the frequency conversion unit A102 is The operation enables suppression of the jamming wave A110.
  • the RF channelizer in the flexible switch matrix of the first embodiment and the second embodiment, it is possible to suppress the jamming wave.
  • the RF channelizer is also applicable to the flexible switch matrix (output side) 11.
  • FIG. 8 is a diagram showing the configuration of a satellite communication system according to a fourth embodiment of the present invention.
  • the satellite communication system according to the fourth embodiment includes a satellite relay device A5 equipped with a flexible switch matrix, a line control device A1 of a ground device A0 controlling the same, a ground satellite GWA2, and a ground mission control device It consists of A3 and NOC (Network Operating Center) A4.
  • NOC Network Operating Center
  • the ground device A0 includes a line control device A1, NOCA4, and a ground mission control device A3.
  • the line control device A1 includes a traffic control unit A6 that determines and requests bandwidth variation for each beam.
  • the NOC_A 4 has a traffic monitoring unit A 7 that monitors the traffic for each beam, and a command generation unit A 8 that generates a command for changing the configuration of the flexible switch matrices 9 and 11 to the satellite relay device A 5.
  • the satellite relay device A5 receives a command from the command receiving antenna A10, and generates a command signal instructing the units 9 to 11 to perform the setting according to the command, and receives from the RF signal receiving antenna A11 Digital channelizer 10 for mapping and transmitting a signal to an arbitrary frequency of a desired beam, and flexible switch matrix (input side for dividing traffic to accommodate traffic exceeding the input band of digital channelizer 10 9) and a flexible switch matrix (output side) 11 for combining traffic.
  • the flexible switch matrix (input side) 9 of the satellite relay device A5 is a hybrid of a command control unit A13 that changes the configuration of the flexible switch matrix according to an instruction signal from the command control device A12, a switch matrix unit SWM1, and a hybrid (HYB) 16 to 19, selectors (SELECTOR) 20 to 23, tunable down converters (Tunable DCON) 24 to 27 for converting arbitrary input RF signals to IF frequencies, and BPFs (band pass filters) 28 to And 31.
  • SELECTOR selectors
  • Tunable DCON tunable down converters
  • BPFs band pass filters
  • the digital channelizer 10 divides the input RF signal into sub-carriers by setting the configuration of the digital channelizer 10 according to an instruction signal from the command control device A12, and divides the input RF signal into sub-carriers.
  • a switch unit A17 that switches subcarriers and a multiplexer unit A18 that multiplexes the divided subcarriers from the switch unit A17.
  • the digital channelizer 10 cuts out an arbitrary RF signal in the input beam at the demultiplexing unit A16, the switch unit A17, and the multiplexing unit A18, and maps, ie, exchanges, in an arbitrary frequency band in the output beam.
  • the flexible switch matrix (output side) 11 up-converts the IF frequency to an arbitrary RF frequency according to an instruction signal from the command control device A12 and changes the configuration of the flexible switch matrix.
  • the command control unit A12 of the satellite relay device A5 instructs the command control unit A13 of the flexible switch matrix (input side) 9 to change the configuration for dividing the input beam, and the hybrid units 16 to 19 and the selector 20
  • the selector of the switch matrix unit SWM1 consisting of to 27 is set.
  • the command control device A12 branches the input signal into a plurality of paths by setting the conversion frequency of the tunable down converters 24 to 27, and performs frequency conversion by the tunable down converters 24 to 27, and the band pass filter 28
  • the channelizer input frequency band is extracted using ⁇ 31.
  • the command control device A12 of the satellite relay device A5 outputs a signal of configuration change instruction for combining output signals to the command control unit A15 of the flexible switch matrix (output side) 11, thereby enabling a tunable up-converter
  • the conversion frequency setting of 48 to 51, and the setting of the switch matrix unit SWM2 including the selectors 56 to 59 and the hybrids 60 to 63 are performed.
  • the signal output from the digital channelizer 10 in the IF frequency band is upconverted to an arbitrary frequency band, and the same as input multi-beam using switch matrix section SWM2 comprising selectors 56 to 59 and hybrid sections 60 to 63. Synthesize in a continuous band.
  • the satellite relay apparatus A5 performs setting of the flexible switch matrices 9 and 11 in the command control apparatus A12 of the satellite relay apparatus A5 according to the request from the ground apparatus A0. Enables the input of an RF signal exceeding the channelizer input band and the output of an RF signal exceeding the channelizer output band.
  • the traffic control unit A6 in the line control unit A1 of the ground apparatus A0 requests a connection setting request from the command generation unit A8 of NOC_A4 in step A41.
  • step A42 the command generation unit A8 of NOC_A4 sends a connection setting request to the ground mission control device A3 in accordance with the request from the traffic control unit A6.
  • step A43 the ground mission control device A3 determines whether or not all commands have been transmitted according to the connection setting request, and when all the commands have been transmitted, the process proceeds to step A44 and processing is stopped. Do. On the other hand, if all the commands have not been transmitted in step A43, a command for changing the configuration of the flexible switch matrix 9, 11 is generated in step A45, and the command control device A12 of the satellite relay device A5 is generated.
  • step A46 the command control device A12 sets the configuration of each unit in the command control units A13 to A15 of each of the units 9 to 11. Then, in step A47, the command control units A13 to A15 set the configuration of each unit according to the request.
  • band division of traffic exceeding the input band of the channelizer 10 and band combination of traffic exceeding the channelizer band are performed.
  • the processing sequence for this will be described in the control sequence shown in FIG. 10 to FIG.
  • FIG. 10 shows an initial sequence for setting the satellite relay device A5.
  • the ground device A0 sets up the satellite repeater A5 in accordance with the planned satellite configuration.
  • the traffic control unit A6 in the line control device A1 in the ground device A0 instructs the command generation unit A8 in the NOC_A4 as the connection setting request (A20) to the frequency band of the input / output beam and the number of band divisions.
  • the command generation unit A8 of NOC_A4 is the configuration of the switch matrix units SWM1 and SWM2 of the satellite relay device A5 based on the frequency band of the input / output beam and the number of band divisions for which the connection setting request (A20) has been made.
  • the conversion frequencies of to 27 and 48 to 51 are determined, and a connection setting request (A21) is notified to the ground mission control device A3.
  • the ground mission control device A3 sends a SELECTOR setting command (A22) to the command control device A12 in order to set the switches of the flexible switch matrix (input side) 9.
  • the command control device A12 receives the SELECTOR setting command (A22)
  • the command control device A12 notifies the command control unit A13 of the flexible switch matrix (input side) 9 of the SELECTOR setting command (A23).
  • the command control unit A13 performs selector setting (A24) for the selectors (SELECTOR) 20 to 27.
  • the ground mission control device A3 transmits a conversion frequency setting command (A25) to the command control device A12 of the satellite relay device A5 in order to set the conversion frequency of the flexible switch matrix (input side) 9.
  • the command control device A12 When receiving the conversion frequency setting command (A25), the command control device A12 notifies the command control unit A13 of the modulation frequency setting command A26, and the command control unit A13 switches the flexible switch matrix (input side) 9 Set the matrix unit SWM1.
  • the command control device A13 performs the conversion frequency setting (A27) of the tunable down converters 24 to 27 by receiving the modulation frequency setting command A26.
  • the ground mission control device A3 requests the channelizing information (subcarrier switching information) of the digital channelizer 10 to the command control device A12 of the satellite relay device A5 using a channelizer setting command (A28).
  • the command control device A12 When receiving the request for the channelizer setting command (A28), the command control device A12 generates a channelizer setting command (A29), which is channelizing information, using the channelizer setting command (A28).
  • the command control device A12 transmits the generated channelizer setting command (A29) to the command control unit A14 of the digital channelizer 10.
  • the command control unit A14 performs setting (A30) of the digital channelizer 10.
  • the ground mission control device A3 notifies the command control device A12 of the satellite relay device A5 of the conversion frequency setting command (A31) in order to set the conversion frequency of the flexible switch matrix (output side) 11.
  • the command control device A12 sends a conversion frequency setting command (A32) for instructing the conversion frequency to the command control unit A15 of the flexible switch matrix (output side) 11.
  • the command control unit A15 sets the conversion frequency of the tunable up converters 48 to 51 (A33).
  • the ground mission control device A3 performs switch setting of the switch matrix unit SWM2 in order to combine the divided bands. Therefore, the ground mission control device A3 notifies the command control device A12 of the satellite relay device A5 of switch path information, that is, a SELECTOR setting command (A34).
  • the command control device A12 transmits a SELECTOR setting command (A35) for instructing switch path information to the command control unit A15 of the flexible switch matrix (output side) 11, The setting (A36) of the selectors 56 to 59 is performed.
  • FIG. 11 shows a UL (uplink) used band information acquisition sequence.
  • the call control device A120 sends a line information notification (A150) to the traffic control unit A6.
  • the traffic control unit A6 calculates a use band, that is, a line usage rate (free line rate) based on the acquired line information notification (A150).
  • UL use band information can also be calculated from satellite telemetry (A 152) notified from the satellite. That is, when the terrestrial mission control device A3 acquires satellite telemetry (UL power measurement information) A152 from the command control device A12 of the satellite relay device A5, UL power measurement measured for each subcarrier by the digital channelizer 10 in the telemetry The result is notified to the traffic monitoring unit A7 of NOC_A4 by the UL power measurement information notification (A153).
  • the traffic monitoring unit A 7 uses the fact that the power is measured by the use of the line, and calculates the line use status from the power measurement result.
  • the traffic monitoring unit A7 sends the calculated line use status notification (A154) to the traffic control unit A6 of the line control device A1.
  • the traffic control unit A6 calculates the use band of the line, that is, the use rate (free line rate) based on the line use status notification (A154).
  • the traffic control unit A6 of the line control device A1 makes a band addition determination (A160), it sends a band change notification (A164) to the call control device A120, and sends a connection setting request (A20) to the command generation unit A8 of NOC_A4.
  • the ground mission control device A3 When receiving the connection setting request (A21), the ground mission control device A3 sets the flexible switch matrix (input side) 9 and the digital channelizer 10, so that the selector setting command (A22), the conversion frequency setting command (A22) A25) The channelizer setting command (A28) is notified to the command control device A12 of the satellite relay device A5.
  • the command control device A12 checks the setting information of the selector setting command (A22), the conversion frequency setting command (A25), and the channelizer setting command (A28), and performs satellite telemetry (setting information confirmation) It transmits to ground mission control-apparatus A3 as A161).
  • the ground mission control device A3 upon acquiring satellite telemetry (setting information confirmation) (A161) from the command control device A12 of the satellite relay device A5, sends a connection setting response (A162) to the command generation unit A8.
  • the command generating unit A8 When receiving the connection setting response (A162), the command generating unit A8 sends a connection setting response (A163) to the traffic control unit A6 of the line control device A1.
  • the traffic control unit A6 determines that band addition has been performed (A160).
  • the traffic control unit A6 of the line control device A1 sends a bandwidth change notification (A171) to the call control device A120 when it judges the removal of the bandwidth (A170).
  • the call control device A120 performs the communication frequency change processing (A172) to the user using the UL band to be deleted, if necessary, and transmits a band change response (A173) to the traffic control unit A6 of the line control device A1. send.
  • the traffic control unit A6 of the line control device A1 sends a connection setting request (A20) to the command generation unit A8 of NOC_A4 along with the band deletion.
  • the command generation unit A8 notifies the ground mission control device A3 of a connection setting request (A21).
  • the ground mission control device A3 sets the flexible switch matrix (input side) 9 and the digital channelizer 10, so that the selector setting command (A22), the conversion frequency setting command (A22) A25) and the channelizer setting command (A28) are notified to the command control device A12 of the satellite relay device A5.
  • the command control device A12 checks the setting information of the selector setting command (A22), the conversion frequency setting command (A25), and the channelizer setting command (A28), and performs satellite telemetry (setting information confirmation) It transmits to ground mission control-apparatus A3 as A174.
  • the ground mission control device A3 upon acquiring satellite telemetry (setting information confirmation) (A174) from the command control device A12 of the satellite relay device A5, sends a connection setting response (A175) to the command generation unit A8.
  • the command generation unit A8 sends a connection setting response (A176) to the traffic control unit A6 of the line control device A1.
  • the traffic control unit A6 determines that the band has been deleted (A170).
  • the call control device A 120 notifies the traffic control unit A 6 of the line control device A 1 of the DL line information (band) along with the call establishment / release (A 149).
  • the traffic control unit A6 of the line control device A1 calculates the line usage rate (free line rate) based on the notified DL line information notification (A150), and determines addition / deletion of the DL band.
  • the determination as to the addition of the DL band is performed by the same algorithm as the determination as to the addition of the UL band, and the availability of the band is determined by comparing the use band A 140 described later with FIG.
  • the call control device A120 When the call establishment / release (A149) occurs, the call control device A120 notifies the traffic control unit A6 of the line control device A1 of the line information notification (A150). The traffic control unit A6 of the line control device A1 calculates the DL use band A 151 based on the line information notification (A150).
  • the traffic control unit A6 of the line control device A1 upon making the band addition determination (A160), transmits a connection setting request (A20) to the command generation unit A8 of NOC_A4.
  • the command generating unit A8 sends a connection setting request (A21) to the ground mission control device A3.
  • the ground mission control device A3 sets the digital channelizer 10 and the flexible switch matrix (output side) 11, so the channelizer setting command (A28), the conversion frequency setting command (A28) A31) and the selector setting command (A34) are notified to the command control device A12 of the satellite relay device A5.
  • the command control device A12 upon receiving the channelizer setting command (A28), the conversion frequency setting command (A31), and the selector setting command (A34), the command control device A12 confirms the setting information and performs satellite telemetry (setting) on the confirmed setting information. As information confirmation) (A161), it transmits to ground mission control device A3.
  • the command generating unit A8 When receiving the connection setting response (A162), the command generating unit A8 sends a connection setting response (A163) to the traffic control unit A6 of the line control device A1.
  • the traffic control unit A6 determines that the band addition has been performed (A160), and sends a band change notification (A164) to the call control apparatus (A120).
  • FIG. 16 shows a DL band deletion sequence.
  • the traffic control unit A6 of the line control device A1 determines that the bandwidth is to be deleted (A170)
  • the traffic control unit A6 sends a bandwidth change notification (A171) to the call control device A120.
  • the call control device A120 performs the communication frequency change processing (A172) to the user using the UL band to be deleted, if necessary, and transmits a band change response (A173) to the traffic control unit A6 of the line control device A1. contact.
  • the traffic control unit A6 of the line control device A1 sends a connection setting request (A20) to the command generation unit A8 of NOC_A4 along with the band deletion.
  • the command generation unit A8 notifies the ground mission control device A3 of the connection setting request (A21).
  • the ground mission control device A3 sets the digital channelizer 10 and the flexible switch matrix (output side) 11, so the channelizer setting command (A28), the conversion frequency setting command (A28) A31) and the selector setting command (A34) are notified to the command control device A12 of the satellite relay device A5.
  • the command control device A12 confirms the setting information and performs satellite telemetry (setting) on the confirmed setting information. As information confirmation) (A174), it transmits to ground mission control device A3.
  • the ground mission control device A3 upon acquiring satellite telemetry (setting information confirmation) (A174) from the command control device A12 of the satellite relay device A5, sends a connection setting response A175 to the command generation unit A8.
  • the command generation unit A8 sends a connection setting response (A176) to the traffic control unit A6 of the line control device A1.
  • the traffic control unit A6 determines that band addition has been performed (A170), and sends a band change notification (A173) to the call control apparatus (A120).
  • connection is re-set and the flexible switch matrix 11 tunable up-converters 48 to 51 for band combination are generated. It is possible to change the selection path by setting the conversion frequency and the SELECTOR 56 to 59.
  • Embodiment 5 Next, a control algorithm for frequency band division of the flexible switch matrix (input side) 9 of the satellite relay apparatus of the fifth embodiment and frequency synthesis of the flexible switch matrix (output side) 11 will be described.
  • FIG. 17 shows a ground device A0 that monitors and controls traffic. Traffic control is performed by the call control device A 120, the traffic control unit A6 of the line control device A1, and the traffic monitoring unit A7 of the NOC_A4.
  • the call control device A 120 When the connection is established and released, the call control device A 120 notifies the traffic control unit A 6 of information (band) of the established and released connection.
  • the traffic control unit A6 calculates, based on the notified connection information, the free band and the used band of the UL band and the DL band allocated to the beam. When this is applied to the GW beam, the vacant band A122 and the used band A123 are derived from the satellite GW band A121.
  • the UL free band A122 can also be derived from the reception power measurement result communicated from the ground mission control device A3.
  • the traffic monitoring unit A7 of NOC_A4 derives the available bandwidth A124 and the used bandwidth A125 based on the power measurement information measured by the satellite, and notifies the traffic control unit A6 of the line control device A1.
  • the traffic control unit A6 implements a band addition / deletion algorithm based on the free band information, and carries out the addition of the UL band and the change of the satellite configuration.
  • FIG. 18 shows the ratio between the free band A 141 corresponding to the above-mentioned free band A 122 and the used band A 140 corresponding to the above used band A 123, and the band addition threshold A 131 and the band deletion threshold with respect to the entire band A 130 of UL beam.
  • FIG. 19 shows an example of an algorithm using the ratio of the free band A 141 to the use band A 140 and the band addition threshold A 131 and the band deletion threshold A 132 described above. If the use band A 140 exceeds the band addition threshold A 131 with respect to the whole band A 130 a in STEP 1, it is determined that band addition is necessary, the band is added (doubled) in STEP 2 and the whole band becomes A 130 b, band addition threshold For example, A131 is reset to 20% of the entire band A130b, and similarly, the band deletion threshold A132 is reset to 80% of the entire band A130b.
  • band addition threshold A 131 and the band deletion threshold A 132 are set to the use band ratio of DL and the use band ratio, addition of band and reduction of band can be detected, and satellite payload for band combination Enables setting of A5 output side flexible switch matrix 11

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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)
  • Radio Relay Systems (AREA)

Abstract

L'invention concerne un dispositif de relais satellite flexible configuré de telle sorte que, lorsque la bande de fréquences d'un multifaisceau d'entrée dépasse la bande de fréquences d'entrée d'un canaliseur numérique, dans une matrice de commutation flexible côté entrée, le multifaisceau est converti en faisceaux à l'intérieur de la bande de fréquences d'entrée du canaliseur numérique en réponse à une instruction reçue d'un équipement terrestre et les faisceaux sont entrés dans le canaliseur numérique et, dans une matrice de commutation flexible côté sortie, des signaux échangés par le canaliseur numérique sont synthétisés sur une bande continue et des ports d'entrée et des ports de sortie du canaliseur numérique peuvent être partagés entre tous les faisceaux.
PCT/JP2017/004604 2017-02-08 2017-02-08 Dispositif de relais de satellite Ceased WO2018146750A1 (fr)

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PCT/JP2017/004604 WO2018146750A1 (fr) 2017-02-08 2017-02-08 Dispositif de relais de satellite

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Cited By (1)

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WO2023042712A1 (fr) * 2021-09-17 2023-03-23 三菱電機株式会社 Satellite artificiel, système au sol, système de communication par satellite, centre de données spatiales, dispositif d'exploitation, dispositif d'exploitation de distribution de contenu, dispositif d'exploitation de réseau, dispositif d'exploitation de serveur, dispositif d'exploitation de centre de données spatiales, installation au sol, dispositif d'exploitation de constellation à large bande en orbite basse, procédé de communication par satellite, procédé de distribution de contenu à la demande, et procédé de distribution de contenu vidéo en direct

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WO2014112442A1 (fr) * 2013-01-15 2014-07-24 三菱電機株式会社 Dispositif de relais, satellite relais, et système de communication par satellite
WO2014125600A1 (fr) * 2013-02-14 2014-08-21 三菱電機株式会社 Dispositif de démultiplexage, dispositif de multiplexage, et dispositif de relais
WO2014170927A1 (fr) * 2013-04-18 2014-10-23 三菱電機株式会社 Dispositif de démultiplexage, dispositif de multiplexage et dispositif relais

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WO2014112442A1 (fr) * 2013-01-15 2014-07-24 三菱電機株式会社 Dispositif de relais, satellite relais, et système de communication par satellite
WO2014125600A1 (fr) * 2013-02-14 2014-08-21 三菱電機株式会社 Dispositif de démultiplexage, dispositif de multiplexage, et dispositif de relais
WO2014170927A1 (fr) * 2013-04-18 2014-10-23 三菱電機株式会社 Dispositif de démultiplexage, dispositif de multiplexage et dispositif relais

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023042712A1 (fr) * 2021-09-17 2023-03-23 三菱電機株式会社 Satellite artificiel, système au sol, système de communication par satellite, centre de données spatiales, dispositif d'exploitation, dispositif d'exploitation de distribution de contenu, dispositif d'exploitation de réseau, dispositif d'exploitation de serveur, dispositif d'exploitation de centre de données spatiales, installation au sol, dispositif d'exploitation de constellation à large bande en orbite basse, procédé de communication par satellite, procédé de distribution de contenu à la demande, et procédé de distribution de contenu vidéo en direct
WO2023042397A1 (fr) * 2021-09-17 2023-03-23 三菱電機株式会社 Satellite artificiel, système au sol, système de communication de satellite et procédé de communication par satellite
JPWO2023042712A1 (fr) * 2021-09-17 2023-03-23
JP7621504B2 (ja) 2021-09-17 2025-01-24 三菱電機株式会社 人工衛星、地上システム、衛星通信システム、および衛星通信方法
US12432615B2 (en) 2021-09-17 2025-09-30 Mitsubishi Electric Corporation Artificial satellite, satellite communication system, space data center, business device, content distribution business device, network business device, server business device, space data center business device, ground installation, low-earth-orbit broadband constellation business device, and on-demand content distribution method

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