JP2935313B2 - Monitoring and control system for satellite communication lines - Google Patents
Monitoring and control system for satellite communication linesInfo
- Publication number
- JP2935313B2 JP2935313B2 JP4222376A JP22237692A JP2935313B2 JP 2935313 B2 JP2935313 B2 JP 2935313B2 JP 4222376 A JP4222376 A JP 4222376A JP 22237692 A JP22237692 A JP 22237692A JP 2935313 B2 JP2935313 B2 JP 2935313B2
- Authority
- JP
- Japan
- Prior art keywords
- communication
- satellite communication
- station
- signal
- earth station
- 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.)
- Expired - Lifetime
Links
Landscapes
- Radio Relay Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、衛星通信回線の監視制
御方式に関し、特に３局以上の複数の衛星通信地球局が
複数の伝送回線を共用して通信を行う場合に、制御局か
ら要求割り当ての指示を受けた回線を使用して通信する
場合の衛星通信回線の監視制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control system for a satellite communication line, and more particularly to a system for controlling a plurality of satellite communication earth stations which share a plurality of transmission lines. The present invention relates to a supervisory control method for a satellite communication line in a case where communication is performed using a line for which assignment has been instructed.
【０００２】[0002]
【従来の技術】一般に３局以上の複数の衛星通信地球局
が２つ以上の伝送回線を共用して通信を行う要求割り当
て衛星通信方式では、図３に示すように、共通の伝送路
資源を管理し要求に応じて伝送路を割り当てる制御局９
と地球局１０Ａ，１０Ｂとの間で伝送路割り当て情報を
伝送するための共通信号回線Ａ１，Ａ２が必要となる。
このような要求割り当て衛星通信方式の場合に、各地球
局１０Ａ，１０Ｂは、制御局９から送られてくる共通信
号を受信しておき、通信がある場合には、共通信号（Ａ
１，Ａ２）を用いて制御局９から通信信号用周波数を含
む通信信号回線１−１，１−２を割り当てられる。その
後は各地球局１０Ａ，１０Ｂがアンテナ１，屋外装置
６，屋内装置７，通信用端末装置８からなる通信信号送
受信装置間で通信を行う。なお、制御局９はアンテナ
１，ＲＦ装置２，共通信号変調器３１，共通信号復調器
３２を備えた共通信号送受信装置３と、主ＤＡＭＡ（Ｄ
ｅｍａｎｄ Ａｓｉｇｎ Ｍｕｌｔｉｐｌｅ Ａｃｃｅ
ｓｓ）制御装置５から構成されており、通信信号回線の
要求割当ての制御を行っている。地球局間で通信を行っ
ている時には、制御局９では通信状態の監視は行ってお
らず、通信が終了した後で地球局からその旨の情報が送
られないと通信状態を把握出来ないシステムとなってい
た。2. Description of the Related Art Generally, in a request assignment satellite communication system in which three or more satellite communication earth stations perform communication by sharing two or more transmission lines, as shown in FIG. A control station 9 which manages and allocates a transmission line according to a request.
Common signal lines A1 and A2 for transmitting transmission line assignment information between the earth station 10A and the earth station 10B are required.
In the case of such a request assignment satellite communication system, each of the earth stations 10A and 10B receives a common signal transmitted from the control station 9 and, when communication is performed, a common signal (A
The communication signal lines 1-1 and 1-2 including the communication signal frequency are allocated from the control station 9 using (1, A2). Thereafter, each of the earth stations 10A and 10B performs communication between the communication signal transmitting and receiving devices including the antenna 1, the outdoor device 6, the indoor device 7, and the communication terminal device 8. The control station 9 includes a common signal transmitting / receiving device 3 including an antenna 1, an RF device 2, a common signal modulator 31, and a common signal demodulator 32, and a main DAMA (D
Emand Assign Multiple Access
ss) The control device 5 is configured to control allocation of requests for communication signal lines. When communication is performed between the earth stations, the control station 9 does not monitor the communication state, and the communication state cannot be grasped unless the information is transmitted from the earth station after the communication is completed. Had become.
【０００３】[0003]
【発明が解決しようとする課題】この従来の衛星通信の
監視制御方式は各地球局が共通信号を常に受信してお
り、各地球局の状態を監視するために各地球局のアドレ
スと各地球局の状態を連絡するように命令する制御信号
を送信し、各地球局の状態を連絡信号を受信している。
この状態監視は衛星通信地球局が通信を行う前だけ行わ
れ、地球局間で通信を行っている時間帯では監視を行っ
ていないので、地球局間で通信を行っている最中に回線
品質の劣化が生じても制御局では対処できない欠点があ
る。In this conventional satellite communication monitoring and control method, each earth station always receives a common signal. In order to monitor the state of each earth station, the address of each earth station and each earth station are monitored. A control signal is sent to command the status of the station, and a status signal for each earth station is received.
This status monitoring is performed only before the satellite communication earth station performs communication, and is not monitored during the time period when communication is performed between earth stations. There is a disadvantage that the control station cannot cope with the deterioration of the data.
【０００４】本発明の目的は、制御局において衛星通信
地球局間の通信を受信して回線のビット誤り率を監視し
て、回線のビット誤り率が一定値より劣化した場合に
は、各地球局の受信周波数を変更させて衛星通信回線の
品質を保つ衛星通信回線の監視制御方式を提供すること
にある。[0004] It is an object of the present invention to monitor the bit error rate of a line by receiving communication between satellite communication earth stations at a control station, and when the bit error rate of the line degrades from a certain value, to control each earth. An object of the present invention is to provide a supervisory control system for a satellite communication line that maintains the quality of the satellite communication line by changing the reception frequency of the station.
【０００５】[0005]
【課題を解決するための手段】本発明の衛星通信回線の
監視制御方式は、３局以上の複数の衛星通信地球局が制
御局からの指示により２つ以上の伝送路を共用して通信
を行う要求割り当て衛星通信方式を使用する制御局が共
通信号をどの衛星通信地球局に送信したいかを指定する
アドレス指定部と、指定した衛星通信地球局を監視・制
御するためのデータを生成するデータ生成部を有する共
通信号処理手段と、共通信号を送信する共通信号送信手
段と、衛星通信地球局から送られてくる共通信号を受信
する共通信号受信手段とを有する共通信号送受信装置を
備えた衛星通信回線の監視制御方式において、前記制御
局が、第１の衛星通信地球局と第２の衛星通信地球局と
通信している場合に、前記第１の衛星通信地球局間の通
信を受信するための通信信号受信手段と、受信した通信
信号のビット誤り率を算出するビット誤り率算出手段
と、算出したビット誤り率の連絡および通信信号の制御
を行う通信信号処理手段と、前記通信信号受信手段によ
り受信した通信信号を第２の衛星通信地球局へ折返して
送信するための通信信号送信手段とを有する。According to the present invention, there is provided a monitoring and control system for a satellite communication line in which three or more satellite communication earth stations share two or more transmission paths in accordance with an instruction from a control station. An address specifying unit that specifies to which satellite communication earth station the control station using the satellite communication system wants to transmit a common signal, and data that generates data for monitoring and controlling the specified satellite communication earth station A satellite having a common signal transmitting / receiving device having common signal processing means having a generating unit, common signal transmitting means for transmitting a common signal, and common signal receiving means for receiving a common signal transmitted from a satellite earth station; In the communication line monitoring and control method, when the control station is communicating with a first satellite communication earth station and a second satellite communication earth station, the control station receives communication between the first satellite communication earth station. For Communication signal receiving means, a bit error rate calculating means for calculating a bit error rate of the received communication signal, a communication signal processing means for communicating the calculated bit error rate and controlling the communication signal, and the communication signal receiving means Communication signal transmitting means for returning the received communication signal to the second satellite communication earth station for transmission.
【０００６】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。図１は、本発明の一実施例のシステム構成図、図２
は本実施例の制御局の構成図である。図１において図３
の従来例と同一の符号は同一の構成と機能を有する。す
なわち、制御局９は本実施例で通信信号送受信装置４を
備え、地球局１０Ａ，１０Ｂの通信信号回線の監視を行
っている。この通信信号送受信装置４は図２に示すよう
に、通信信号変調部４１、通信信号復調部４２、ビット
誤り率（ＢＥＲ）算出部４３、通信共通信号処理部４４
から構成される。また、共通信号送受信装置３には共通
信号処理器３３を備えており、前述した通信信号処理部
４４の情報により所定の処理を行って地球局１０Ａ，１
０Ｂへ共通信号回線を通して制御を行っている。ＲＦ装
置２の内部構成としてＨＰＡ２１，Ｕ／Ｃ２２，ＬＮＡ
２４，Ｄ／Ｃ２５は従来例も同様の構成であるが合成器
２３，分配器２６が追加されて共通信号、通信信号の合
成および分配を行っている。Next, the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram of an embodiment of the present invention.
FIG. 3 is a configuration diagram of a control station of the present embodiment. In FIG. 1, FIG.
The same reference numerals as those of the conventional example have the same configuration and function. That is, the control station 9 includes the communication signal transmitting / receiving device 4 in the present embodiment, and monitors the communication signal lines of the earth stations 10A and 10B. As shown in FIG. 2, the communication signal transmitting / receiving device 4 includes a communication signal modulator 41, a communication signal demodulator 42, a bit error rate (BER) calculator 43, and a communication common signal processor 44.
Consists of Further, the common signal transmitting / receiving device 3 includes a common signal processor 33, and performs predetermined processing based on the information of the communication signal processing unit 44 described above to perform the earth station 10A, 1
0B is controlled through a common signal line. HPA21, U / C22, LNA as the internal configuration of the RF device 2
24 and D / C 25 have the same configuration in the conventional example, but combiners 23 and distributors 26 are added to combine and distribute common signals and communication signals.
【０００７】次に本実施例の構成と動作を説明する。前
述のように制御局が衛星通信地球局間の回線状態を監視
するために通信信号送受信装置４を設置する。一般に制
御局９は衛星通信地球局に比べてアンテナの径が非常に
大きいために、衛星通信地球局よりも良好な回線状態を
保っている。そこで制御局の通信信号復調器４２で受信
した衛星通信地球局間の通信のビット誤り率をＢＥＲ算
出部４３で算出する。算出したビット誤り率を通信回線
監視制御信号１０１にて共通信号処理器３３経由で主Ｄ
ＡＭＡ制御装置５に伝える。主ＤＡＭＡ制御装置５で
は、ビット誤り率がある値より悪くなると、衛星通信地
球局の通信信号復調器７５および制御局の通信信号変調
器４１の周波数を変更し制御局の通信信号変調器４１が
搬送波を送出するように制御局の共通信号送受信装置３
を経由して制御する。図１で説明すると、地球局１０Ａ
が通信信号回線１−１で送信し、衛星通信地球局１０Ｂ
と制御局９はそれぞれ通信信号回線２−１と１−１を受
信している状態で、制御局９で算出しているビット誤り
率がある値より悪くなると、共通信号回線Ａ１，Ａ２を
通しての制御により、衛星通信地球局１０Ｂは通信信号
回線２−１を受信し制御局９は通信信号回線１−１で受
信した信号を折り返して、通信信号回線２−１で送信す
るようになる。すなわち衛星回線の品質が悪くなると、
通信信号は、アンテナ径の大きい制御局９を経由して送
信されるので、良好な通信を確保することが出来る。Next, the configuration and operation of this embodiment will be described. As described above, the control station installs the communication signal transmitting / receiving device 4 in order to monitor the line condition between the satellite communication earth stations. Generally, since the diameter of the antenna of the control station 9 is much larger than that of the satellite communication earth station, the control station 9 maintains a better line state than the satellite communication earth station. Therefore, the BER calculator 43 calculates the bit error rate of the communication between the satellite communication earth stations received by the communication signal demodulator 42 of the control station. The calculated bit error rate is transmitted to the main D through the common signal processor 33 by the communication line monitoring control signal 101.
The information is transmitted to the AMA control device 5. When the bit error rate becomes lower than a certain value, the main DAMA controller 5 changes the frequency of the communication signal demodulator 75 of the satellite communication earth station and the frequency of the communication signal modulator 41 of the control station, and the communication signal modulator 41 of the control station changes the frequency. Control station common signal transmission / reception device 3 so as to transmit a carrier wave
Control via. Referring to FIG. 1, the earth station 10A
Transmits on the communication signal line 1-1, and the satellite communication earth station 10B
When the bit error rate calculated by the control station 9 becomes lower than a certain value while receiving the communication signal lines 2-1 and 1-1, respectively, the control station 9 and the control station 9 transmit through the common signal lines A1 and A2. Under the control, the satellite communication earth station 10B receives the communication signal line 2-1 and the control station 9 returns the signal received on the communication signal line 1-1 and transmits the signal on the communication signal line 2-1. In other words, if the quality of the satellite link deteriorates,
Since the communication signal is transmitted via the control station 9 having a large antenna diameter, good communication can be ensured.
【０００８】[0008]
【発明の効果】以上、説明したように本発明によれば、
制御局が衛星通信地球局間の通信信号を受信することに
よって衛星通信地球局間の回線状態を監視しており、通
信回線のビット誤り率がある値より悪くなると、共通信
号により衛星通信地球局の送信周波数、制御局の送信周
波数および送信搬送波の制御を行い、地球局間の通信信
号を制御局経由で送信することにより、地球局間の通信
回線の品質を良好に保つことが出来るという効果があ
る。As described above, according to the present invention,
The control station monitors the line condition between the satellite communication earth stations by receiving the communication signal between the satellite communication earth stations, and when the bit error rate of the communication line becomes lower than a certain value, the satellite communication earth station uses the common signal. By controlling the transmission frequency of the control station, the transmission frequency of the control station, and the transmission carrier, and transmitting the communication signal between the earth stations via the control station, the quality of the communication line between the earth stations can be kept good. There is.
【図１】本発明の一実施例のシステム構成図である。FIG. 1 is a system configuration diagram of an embodiment of the present invention.
【図２】本実施例の要部の制御局の構成図である。FIG. 2 is a configuration diagram of a control station as a main part of the embodiment.
【図３】従来の衛星通信回線の監視制御方式のシステム
構成図である。FIG. 3 is a system configuration diagram of a conventional supervisory control system for a satellite communication line.
１ アンテナ ２ ＲＦ装置 ３ 共通信号送受信装置 ４ 通信信号送受信装置 ５ 主ＤＡＭＡ制御装置 ６ 屋外装置 ７ 屋内装置 ８ 通信信号用端末装置 ９ 制御局 １０Ａ，１０Ｂ 地球局 ２１ 高電力増幅器（ＨＰＡ） ２２ 送信周波数変換器（Ｕ／Ｃ） ２３ 合成器 ２４ 低雑音増幅器（ＬＮＡ） ２５ 受信周波数変換器（Ｄ／Ｃ） ２６ 分配器 ３１ 共通信号変調器 ３２ 共通信号復調器 ３３ 共通信号処理器 ４１ 通信信号変調器 ４２ 通信信号復調器 ４３ ＢＥＲ算出器 ４４ 通信共通信号処理部 Reference Signs List 1 antenna 2 RF device 3 common signal transmitting / receiving device 4 communication signal transmitting / receiving device 5 main DAMA control device 6 outdoor device 7 indoor device 8 communication signal terminal device 9 control station 10A, 10B earth station 21 high power amplifier (HPA) 22 transmission frequency Converter (U / C) 23 Combiner 24 Low noise amplifier (LNA) 25 Receive frequency converter (D / C) 26 Distributor 31 Common signal modulator 32 Common signal demodulator 33 Common signal processor 41 Communication signal modulator 42 communication signal demodulator 43 BER calculator 44 communication common signal processing unit
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H04B 7/14 - 7/22 H04B 17/00 - 17/02 Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) H04B 7/14-7/22 H04B 17/00-17/02
Claims (2)
局からの指示により２つ以上の伝送路を共用して通信を
行う要求割り当て衛星通信方式を使用する制御局が共通
信号をどの衛星通信地球局に送信したいかを指定するア
ドレス指定部と、指定した衛星通信地球局を監視・制御
するためのデータを生成するデータ生成部を有する共通
信号処理手段と、共通信号を送信する共通信号送信手段
と、衛星通信地球局から送られてくる共通信号を受信す
る共通信号受信手段とを有する共通信号送受信装置を備
えた衛星通信回線の監視制御方式において、前記制御局
が、第１の衛星通信地球局と第２の衛星通信地球局と通
信している場合に、前記第１の衛星通信地球局間の通信
を受信するための通信信号受信手段と、受信した通信信
号のビット誤り率を算出するビット誤り率算出手段と、
算出したビット誤り率の連絡および通信信号の制御を行
う通信信号処理手段と、前記通信信号受信手段により受
信した通信信号を第２の衛星通信地球局へ折返して送信
するための通信信号送信手段とを有することを特徴とす
る衛星通信回線の監視制御方式。Claims: 1. A control station using a request assignment satellite communication method in which a plurality of three or more satellite communication earth stations communicate by sharing two or more transmission paths in accordance with an instruction from the control station. A common signal processing unit having an address designating unit for designating transmission to the satellite communication earth station, a data generating unit for generating data for monitoring and controlling the designated satellite communication earth station, and a common signal transmitting unit for transmitting a common signal In a monitoring and control system for a satellite communication line including a common signal transmitting / receiving device having a signal transmitting unit and a common signal receiving unit for receiving a common signal transmitted from a satellite communication earth station, the control station may be configured to include a first communication unit. Communication signal receiving means for receiving communication between the first satellite communication earth station when communicating with the satellite communication earth station and the second satellite communication earth station; and a bit error rate of the received communication signal. To A bit error rate calculating means for calculating;
Communication signal processing means for communicating the calculated bit error rate and controlling the communication signal; and communication signal transmission means for returning the communication signal received by the communication signal receiving means to the second satellite communication earth station for transmission. A supervisory control method for a satellite communication line, characterized by having:
球局間の通信を受信して通信回線のビット誤り率を算出
し、ビット誤り率がある値より悪くなった場合には、共
通信号により前記第１の衛星通信地球局の受信周波数を
変更させ、前記制御局で受信した通信信号を前記第１の
衛星通信地球局が変更した受信周波数に相当する送信周
波数で前記制御局から送信することを特徴とする請求項
１記載の衛星通信回線の監視制御方式。2. The control station receives a communication between first satellite communication earth stations, calculates a bit error rate of a communication line, and, when the bit error rate becomes lower than a certain value, a common signal. And changes the reception frequency of the first satellite communication earth station, and transmits the communication signal received by the control station from the control station at a transmission frequency corresponding to the reception frequency changed by the first satellite communication earth station. 2. A supervisory control system for a satellite communication line according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4222376A JP2935313B2 (en) | 1992-08-21 | 1992-08-21 | Monitoring and control system for satellite communication lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4222376A JP2935313B2 (en) | 1992-08-21 | 1992-08-21 | Monitoring and control system for satellite communication lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0669844A JPH0669844A (en) | 1994-03-11 |
| JP2935313B2 true JP2935313B2 (en) | 1999-08-16 |
Family
ID=16781391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4222376A Expired - Lifetime JP2935313B2 (en) | 1992-08-21 | 1992-08-21 | Monitoring and control system for satellite communication lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2935313B2 (en) |
-
1992
- 1992-08-21 JP JP4222376A patent/JP2935313B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0669844A (en) | 1994-03-11 |
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