JPH0199329A - Self-diagnosis method for dama communication equipment for satellite communication - Google Patents
Self-diagnosis method for dama communication equipment for satellite communicationInfo
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- JPH0199329A JPH0199329A JP25861387A JP25861387A JPH0199329A JP H0199329 A JPH0199329 A JP H0199329A JP 25861387 A JP25861387 A JP 25861387A JP 25861387 A JP25861387 A JP 25861387A JP H0199329 A JPH0199329 A JP H0199329A
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- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims description 26
- 241000283014 Dama Species 0.000 title claims description 24
- JNSGIVNNHKGGRU-JYRVWZFOSA-N diethoxyphosphinothioyl (2z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetate Chemical compound CCOP(=S)(OCC)OC(=O)C(=N/OC)\C1=CSC(N)=N1 JNSGIVNNHKGGRU-JYRVWZFOSA-N 0.000 title claims description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 239000000969 carrier Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000008054 signal transmission Effects 0.000 description 5
- 101000912181 Arabidopsis thaliana Cysteine synthase, mitochondrial Proteins 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、１キャリア１通話路方式としてのＳＣＰＣ
（Ｓｉｎｇｌｅ Ｃｈａｎｎｅｌ Ｐｅｒ Ｃａｒｒｉ
ｅｒ）方式と、集中制御型の要求時回線割当て（ＤＡＭ
Ａ；Ｄｅｎ＋ａｎｄ ＡｓＳｉｇｎｍｅｎｔ Ｍｕｌｔ
ｉｐｌｅ Ａｃｃｅｓｓ）方式とを組み合わせた衛星通
信システムにおける親局もしくは子局にそなえられるＤ
ＡＭＡ通信装置においてその共通線信号回線（ＣＳ Ｃ
； Ｃｏｍｍｏｎ Ｓｉｇ−ｎａｌｉｎｇ Ｃｈａｎｎ
ｅｌ）系統の状態を自己診断する方法に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] This invention is directed to SCPC as a one-carrier, one-channel system.
(Single Channel Per Carri
er) and centrally controlled on-demand allocation (DAM)
A; Den+and AsSignment Mult
iple Access) system, which is equipped in a master station or a slave station in a satellite communication system that combines
In an AMA communication device, its common signal line (CS C
;Common Signaling Channel
el) It relates to a method for self-diagnosing the status of a system.
［従来の技術］
第３図は５ｃｐｃ方式と集中制御型の要求時回線割当て
方式（以下、ＤＡＭＡ方式という）とを採用している一
般的な衛星通信システムを示す概略構成図であり、図に
おいて、１は１キャリアで１通話路を構成するキャリア
（以下、５ＣＰＣキャリアという）を多数配置されうる
中継器をもつ通信衛星、２は衛星回線（ＳＣＰＣキャリ
ア）の割当て機能を有する親局、３ａ〜３ｎは親局２に
より相互間の呼接続制御を集中管理される多数の子局で
ある。[Prior Art] FIG. 3 is a schematic configuration diagram showing a general satellite communication system that employs the 5cpc method and the centralized control type on-demand line allocation method (hereinafter referred to as the DAMA method). , 1 is a communication satellite having a repeater capable of arranging a large number of carriers (hereinafter referred to as 5CPC carriers) constituting one communication path with one carrier, 2 is a master station having a satellite line (SCPC carrier) assignment function, 3a- 3n is a large number of slave stations whose mutual call connection control is centrally managed by the master station 2.
また、第４図は通信＃！１に搭載されている上記中継器
中における５ｃｐｃキャリアの配列例を示す概念図であ
り、図において、４は親局２から各子局３ａ〜３ｎへの
呼接続制御信号を送るための共通線信号回線として使用
される５ｃｐｃキャリア、５は各子局３ａ〜３ｎから親
局２への送信を行なうための共通線信号回線（以下、ｃ
Ｓｃという）として使用される５ｃｐｃキャリア、６ａ
〜６ｎはｊＪ１２により通信要求（回線割当て要求）の
あった２つの子局間に割り当てられうる通話路用の５ｃ
ｐｃキャリアである。Also, Figure 4 shows communication #! 1 is a conceptual diagram showing an arrangement example of 5 CPC carriers in the repeater installed in the repeater 1, and in the figure, 4 is a common line for sending call connection control signals from the master station 2 to each of the slave stations 3a to 3n. 5 cpc carrier used as a signal line, 5 is a common line signal line (hereinafter referred to as c) for transmitting from each slave station 3a to 3n to the master station 2.
5cpc carrier used as Sc), 6a
~6n is 5c for a communication path that can be allocated between two slave stations that have received a communication request (line allocation request) by jJ12.
It's a PC carrier.
さらに、第５図は親局２あるいは各子局３ａ〜３ｎの各
局にそなえられる従来のＤＡＭＡ通信装 −置の
構成例を示すブロック図であり、図において、７ＡはＣ
ＳＣ用信号の送受信を行なう送受信装置、８は同送受信
装置７Ａ内のＣＳＣ用信号送受信回路、９１よ送受信装
置７Ａに接続されキャアリ４゜５．６ａ〜６ｎを用いた
送受信を行なうためのアンテナ９ａを含む中間周波／高
周波装置、１０は端局装置、１１は通話のために用いら
れるシンセサイザ付きの５ｃｐｃ送受信装置、１２は送
受信用の交換機１４と端局装置１ｏとを接続する中継線
、１３はＤＡＭＡ方式用のシステム制御装置である。Furthermore, FIG. 5 is a block diagram showing an example of the configuration of a conventional DAMA communication device provided in the master station 2 or each of the slave stations 3a to 3n.
A transmitting/receiving device for transmitting and receiving SC signals; 8, a CSC signal transmitting/receiving circuit in the transmitting/receiving device 7A; 91, an antenna 9a connected to the transmitting/receiving device 7A for transmitting and receiving signals using antennas 4°5.6a to 6n; 10 is a terminal station, 11 is a 5CPC transmitting/receiving device with a synthesizer used for telephone calls, 12 is a trunk line connecting the exchange 14 for transmitting and receiving and the terminal station 1o, 13 is a This is a system control device for the DAMA method.
次に、上述のような構成をもつ５ｃｐｃ方式およびＤＡ
ＭＡ方式を採用した衛星通信システムにおいて、一般に
行なわれている回線割当て手順について簡単に説明する
。Next, we will introduce the 5cpc method and DA with the above configuration.
A commonly used line assignment procedure in a satellite communication system employing the MA system will be briefly described.
まず、子局３ａ〜３ｎのうちのある起呼子局における交
換機１４から発呼要求信号が送信されてくると、制御装
置１３において送信信号が発呼要求信号であることおよ
び信号中に含まれている被呼子局番号（子局３ａ〜３ｎ
のいずれかに対する番号）、被呼加入者番号等の選択信
号を識別する。First, when a call request signal is transmitted from the exchange 14 of a calling slave station among the slave stations 3a to 3n, the control device 13 determines that the transmitted signal is a call request signal and that the signal is included in the signal. called slave station number (slave stations 3a to 3n)
number), the called subscriber number, etc.
発呼要求信号を受けたシステム制御装置１３は、上記の
被呼子局番号、被呼加入者番号等を含む「回線割当て要
求信号」を編集した後、この「回線割当て要求信号Ｊが
、送受信装置７Ａにより中間波／高周波装置９を介して
、起呼子局から親局２へのＣ８Ｃである５ｃｐｃキャリ
ア５上へ送信される。After receiving the call request signal, the system control device 13 edits the "line assignment request signal" including the above-mentioned called sub-station number, called subscriber number, etc. 7A, it is transmitted via the intermediate wave/high frequency device 9 onto the 5cpc carrier 5, which is the C8C from the calling slave station to the master station 2.
通信衛星１の５ｃｐｃキャリア５上を経由した「回線割
当て要求信号」は、親局２において中間波／高周波装置
９および送受信装置７Ａを介し親局２おけるシステム制
御装置１３で受信され、この親局２におけるシステム制
御装置１３は１通話路用の５ｃｐｃキャリア６ａ〜６ｎ
の中から空きキャリアを２個選択するとともに、その衛
星回線番号を含む「回線割当て指示信号」を編集する。The "line assignment request signal" that has passed on the 5cpc carrier 5 of the communication satellite 1 is received by the system control device 13 in the parent station 2 via the intermediate wave/high frequency device 9 and the transmitting/receiving device 7A in the parent station 2, and The system control device 13 in 2 has 5 cpc carriers 6a to 6n for one communication path.
Select two vacant carriers from among them, and edit the "line assignment instruction signal" including the satellite line number.
そして、この「回線割当て指示信号」は、起呼子局と、
この起呼子局からのｒ回線割当て要求信号」に含まれて
いる選択信号を分析して得られた被呼子局とへ、親局２
における送受信装置７Ａおよび中間波／高周波装置９を
用い、親局２から起呼子局、被呼子局へのＣ８Ｃ用の５
ｃｐｃキャリア５上を経由して送（ｉされ、起呼子局、
被呼子局が「回線割当て指示信号」を受信することによ
って、これらの子局間の通話が、所定の通話路用の５Ｃ
ＰＣキャリア６ａ〜６ｎを介し５ｃｐｃ送受信装置１１
により開始される。Then, this "line assignment instruction signal" is sent to the calling slave station,
The master station 2
5 for C8C from the master station 2 to the calling slave station and the called slave station using the transmitting/receiving device 7A and the intermediate wave/high frequency device 9.
The calling slave station is sent via CPC carrier 5,
When the called slave station receives the "line assignment instruction signal," the call between these slave stations is assigned to the 5C for a predetermined communication path.
5cpc transmitter/receiver 11 via PC carriers 6a to 6n
is started by.
なお、送受信装置７Ａは、ＣＳＣ用信号を送受信する動
作を周期的に行なうものであり、「回線割当て要求信号
］が無い場合は、単に共通線回線用信号の送受信のみを
行ない、「回線割当て指示信号」等を送出するなどの制
御動作は行なわない。Note that the transmitting/receiving device 7A periodically performs the operation of transmitting and receiving the CSC signal, and if there is no "line assignment request signal", it simply transmits and receives the common channel signal, and issues the "line assignment instruction". Control operations such as sending out "signals" etc. are not performed.
［発明が解決しようとする問題点］
ところで、このような衛星通信用ＤＡＭＡ通信装置では
、回線割当てのための信号授受を行なう際に用いられる
Ｃ８Ｃ系統は、ＤＡＭＡ方式としては特に重要な部分で
あり、この系統の状態を診断することは、ＤＡＭＡ通信
装置の信頼性を高める上で極めて有意義である。しかし
、従来、このような診断を行なうに際しては、装置自体
に自己診断機能を有していないので、装置とは別個に制
御装置等が必要で、システムが複雑になるなどの問題点
があった。[Problems to be Solved by the Invention] Incidentally, in such a DAMA communication device for satellite communication, the C8C system used when transmitting and receiving signals for channel assignment is a particularly important part of the DAMA system. , diagnosing the status of this system is extremely meaningful in increasing the reliability of the DAMA communication device. However, in the past, when performing such a diagnosis, the device itself did not have a self-diagnosis function, so a separate control device was required, making the system complicated. .
この発明は上記のような問題点を解消するためになされ
たもので５共通線回線系統の自己診断を容易に行なえる
ようにして、通信装置としての信頼性の向上をはかった
、衛星通信用ＤＡＭＡ通信装置の自己診断方法を得るこ
とを目的とする。This invention was made in order to solve the above-mentioned problems, and is a satellite communication system that facilitates self-diagnosis of the 5-common line system and improves the reliability of the communication device. The purpose of this invention is to obtain a self-diagnosis method for a DAMA communication device.
［問題点を解決するための手段］
この発明に係る衛星通信用ＤＡＭＡ通信装置の自己診断
方法は、５ｃｐｃ方式と、親局による起呼子局と被呼子
局との間の呼接続制御を集中管理する集中制御型の要求
時回線割当て（ＤＡＭＡ）方式とを組み合わせた衛星通
信システムにおける上記の親局もしくは子局にそなえら
れるＤＡＭＡ通信装置において、共通線信号回線（ＣＳ
Ｃ）を使って自己診断用信号を送信するとともに、通
信衛星の中継器により中継され他局を経由した上記自己
診断用信号を受信してから、送信時における上記自己診
断用信号と受信時における上記自己診断用信号とを比較
してその比較結果に基づき上記共通線信号回線系統の状
態を自己診断するものである。[Means for Solving the Problems] A self-diagnosis method for a DAMA communication device for satellite communication according to the present invention employs a 5cpc method and centralized management of call connection control between a calling slave station and a called slave station by a master station. In the DAMA communication device provided in the above-mentioned master station or slave station in a satellite communication system that combines a centrally controlled channel assignment on demand (DAMA) method, the common channel signal line (CS
C) to transmit a self-diagnosis signal, and after receiving the self-diagnosis signal that has been relayed by a communication satellite repeater and passed through another station, the self-diagnosis signal at the time of transmission and the one at the time of reception. The self-diagnosis signal is compared with the self-diagnosis signal, and the state of the common signal line system is self-diagnosed based on the comparison result.
［作 用］
この発明における衛星通信用ＤＡＭＡ通信装置の自己診
断方法では、自局（ｉ局もしくは子局）の共通線回線（
ＣＳ Ｃ）用信号の送信時に、自己診断用信号が共通線
信号回線へ送出される。このとき、上記自己診断用信号
のパターンを記憶しておく。[Function] In the self-diagnosis method of a DAMA communication device for satellite communication according to the present invention, the common line line (
When transmitting the CS C) signal, a self-diagnosis signal is sent to the common signal line. At this time, the pattern of the self-diagnosis signal is memorized.
次に、送信時と同様に、通信衛星の中継器により中継さ
れ他局を経由してきた上記自己診断用信号が受信されて
、受信した上記自己診断用信号のパターンと送信時に記
憶した信号パターンとが比較される。そして、その相違
をチエツクすることにより、上記共通線信号回線系統の
状態が自己診断される。Next, in the same way as at the time of transmission, the self-diagnosis signal relayed by the communication satellite repeater and passed through another station is received, and the pattern of the received self-diagnosis signal and the signal pattern memorized at the time of transmission are are compared. By checking the difference, the state of the common signal line system is self-diagnosed.
［発明の実施例コ
以下、この発明の一実施例を図について説明する。第１
図はこの発明の一実施例による自己診断方法の適用を受
けた衛星通信用ＤＡＭＡ通信装置の構成を示すブロック
図である。なお、第１図中、記述の符号と同一の符号は
同一、又は相当部分を示すものであり、各符号について
の詳細な説明は省略する。また、本実施例では、親局（
第３図の符号２参照）におけるＤＡＭＡ通信装置の場合
について説明する。[Embodiment of the Invention] An embodiment of the invention will be described below with reference to the drawings. 1st
FIG. 1 is a block diagram showing the configuration of a DAMA communication device for satellite communication to which a self-diagnosis method according to an embodiment of the present invention is applied. In FIG. 1, the same reference numerals as those in the description indicate the same or corresponding parts, and a detailed explanation of each reference numeral will be omitted. In addition, in this embodiment, the master station (
The case of a DAMA communication device (see reference numeral 2 in FIG. 3) will be explained.
第１図に示すように５本発明の方法の適用を受けた装置
も従来装置とほぼ同様に構成されているが、本実施例の
装置と従来装置との異なっている点は、ＣＳＣ用信号送
受信装置７内の構成である。As shown in FIG. 1, the device to which the method of the present invention is applied is almost the same in configuration as the conventional device, but the difference between the device of this embodiment and the conventional device is that the CSC signal is This is the configuration inside the transmitting/receiving device 7.
第１図において、１５はシステム制御装置１３からの制
御信号を受けて自己診断用信号を送受信する自己診断用
送受信回路で、ＣＳＣ用信号送受信回路８と並列的に設
けられている。また、１６はＣＳＣ用信号を送受信する
か自己診断用信号を送受信するかを切り換える送受信制
御回路で、システム制御装置１３からの制御信号を受け
、Ｃ８Ｃ用信号送受信回路８および自己診断用信号送受
信回路１５の出力側にそれぞれ設けられたスイッチ８ａ
、１５ａのいずれか一方をオンしてＣ８Ｃ用信号／自己
診断用信号の切換を行なうものである。In FIG. 1, reference numeral 15 denotes a self-diagnosis transmitting/receiving circuit that receives a control signal from the system control device 13 and transmits/receives a self-diagnosis signal, and is provided in parallel with the CSC signal transmitting/receiving circuit 8. Further, 16 is a transmission/reception control circuit that switches between transmitting and receiving CSC signals and self-diagnosis signals, and receives a control signal from the system control device 13, and receives a control signal from the C8C signal transmission and reception circuit 8 and a self-diagnosis signal transmission and reception circuit. Switch 8a provided on each output side of 15
, 15a is turned on to switch between the C8C signal and the self-diagnosis signal.
次に、上述のように構成されたＤＡＭＡ通信装置による
自己診断方法について説明する。Next, a self-diagnosis method using the DAMA communication device configured as described above will be explained.
まず、通常動作時には、送受信制御回路１６によりスイ
ッチ８ａをオン状態として、第２図（ａ）に示すように
、送信モードでＣ８Ｃ用信号送受信回路８からＣ８Ｃ用
信号をＡ（８局）→Ｂ（子局）のタイミングで送信し、
次に受信モードに切り替わって子局（Ｂ）からのＣ８Ｃ
用信号をＢ→Ａのタイミングで受信する。First, during normal operation, the switch 8a is turned on by the transmission/reception control circuit 16, and as shown in FIG. Transmit at the timing of (slave station),
Next, switch to reception mode and receive C8C from slave station (B).
A signal is received at timing B→A.
以上の処理は一定の周期で繰返し行なわれ、子局から「
回線割当て要求」が送信されてきたとき、親局は、この
「回線割当て要求信号」を含むＣ８Ｃ用信号を受信した
後、空き状態の通話路（ＳＣｐｃキャリア６ａ〜６ｎ）
を選び、次のＣＳＣ用信号送信時に「回線割当て指示信
号」を含むＣＳＣ用信号を送信する。The above processing is repeated at regular intervals, and the slave station
When a "line assignment request" is transmitted, the master station receives a C8C signal including this "line assignment request signal" and then selects an idle channel (SCpc carrier 6a to 6n).
is selected, and transmits a CSC signal including a "line assignment instruction signal" at the time of the next CSC signal transmission.
このような通常動作機能に、本実施例の第１図に示す装
置では、自己診断機能が付加されている。In the device shown in FIG. 1 of this embodiment, a self-diagnosis function is added to such normal operation function.
つまり、回線割当ての制御を行なわない状態では、送受
信制御回路１６によりスイッチ１５ａがオン状態とされ
て、自己診断用信号送受信回路１５から、一定の時間ご
とにＣ８Ｃ用信号として自己診断用信号［第２図（ｂ）
のＸ〕が共通線信号回線（ＳＣＰＣキャリア４）へ送信
される。この後、通信衛星（第３図の符号１参照）の中
継器を介して子局（Ｂ）に対して自己診断用信号を送信
すると同時に、親局（Ａ）の自己診断用信号送受信回路
１５において、共通線信号回線（ＳＣＰＣキャリア５）
からの自己診断用信号の受信処理〔第２図（ｂ）のＹ〕
を行なう。このとき、信号Ｙは、中継器を介して受信さ
れるため、第２図（ｂ）に示すように、１スロツト遅れ
ることになる。In other words, when line allocation is not controlled, the transmission/reception control circuit 16 turns on the switch 15a, and the self-diagnosis signal transmission/reception circuit 15 sends a self-diagnosis signal [the first signal] as a C8C signal at regular intervals. Figure 2 (b)
X] is transmitted to the common signal line (SCPC carrier 4). Thereafter, a self-diagnosis signal is transmitted to the slave station (B) via the repeater of the communication satellite (see reference numeral 1 in FIG. 3), and at the same time, the self-diagnosis signal transmission/reception circuit 15 of the master station (A) In, common line signal line (SCPC carrier 5)
[Y in Figure 2 (b)]
Do this. At this time, since the signal Y is received via the repeater, it is delayed by one slot, as shown in FIG. 2(b).
以上の処理によって先に送信した信号Ｘと受信した信号
Ｙとをチエツクして、同じであればＣ８Ｃ系統の状態が
良好であると診断する一方、信号ＸとＹとが異なってい
れば、Ｃ８Ｃ系統の状態になんらかの異常があるとして
オペレータへの通報等を行なう。Through the above processing, the previously transmitted signal Notify the operator that there is some abnormality in the system status.
このように、本実施例によれば、親局の共通線回＠（Ｃ
８Ｃ）用信号の送信時に、自己診断用信号Ｘを共通線信
号回線（ＳＣＰＣキャリア４）へ送出し、このときの自
己診断用信号Ｘのパターンを記憶しておくとともに、１
スロツト後に、通信衛星１の中継器により中継され子局
を経由してきた自己診断用信号Ｙを共通線信号回線（ｓ
ｃ ｐ ｃキャリア５）から受信して、送信時の自己
診断用信号Ｘのパターンと受信時の自己診断用信号Ｙの
パターンとを比較・チエツクすることで、共通線信号回
線系統の状態が極めて容易に自己診断されるようになり
、通信装置としての信頼性が大幅に向上するのである。In this way, according to this embodiment, the common line line @(C
When transmitting the signal for 8C), send the self-diagnosis signal X to the common line signal line (SCPC carrier 4), memorize the pattern of the self-diagnosis signal X at this time, and
After the slot, the self-diagnosis signal Y, which has been relayed by the repeater of the communication satellite 1 and passed through the slave station, is connected to the common signal line (s
By comparing and checking the pattern of self-diagnosis signal Self-diagnosis can now be easily performed, and reliability as a communication device is greatly improved.
なお、上記実施例では、親局を１局としているが、親局
以外に予備親局を設けてもよい。In the above embodiment, there is one master station, but a standby master station may be provided in addition to the master station.
また、上記実施例では、親局におけるＤＡＭＡ通信装置
のみの自己診断機能について説明したが、子局における
ＤＡＭＡ通信装置も第１図と同様に構成することで、全
く同様の自己診断機能を得ることができる。Further, in the above embodiment, the self-diagnosis function of only the DAMA communication device in the master station was explained, but by configuring the DAMA communication device in the slave station in the same manner as shown in FIG. 1, it is possible to obtain exactly the same self-diagnosis function. Can be done.
さらに、上記実施例では、一定周期ごとの自動自己診断
について示しているが、オペレータからの指示によって
随時診断を行なうようにしてもよい。Furthermore, although the above embodiments show automatic self-diagnosis at regular intervals, the diagnosis may be performed at any time based on instructions from the operator.
［発明の効果］
以上のように、この発明によれば、自己診断用信号を共
通線信号回線へ送出し、通信衛星の中継器により中継さ
れ他局を経由してきた自己診断用信号を共通線信号回線
から受信して、送信時の自己診断用信号のパターンと受
信時の自己診断用信号Ｙのパターンとを比較・チエツク
することで、共通線信号回線系統の状態が極めて容易に
自己診断されるようになり、通信装置としての信頼性が
大幅に向上する効果がある。[Effects of the Invention] As described above, according to the present invention, a self-diagnosis signal is sent to the common line signal line, and a self-diagnosis signal that has been relayed by a repeater of a communication satellite and passed through another station is transmitted to the common line. By comparing and checking the pattern of the self-diagnosis signal received from the signal line and the pattern of the self-diagnosis signal Y at the time of transmission and the pattern of the self-diagnosis signal Y at the time of reception, the status of the common line signal line system can be self-diagnosed very easily. This has the effect of significantly improving the reliability of the communication device.
第１図はこの発明の一実施例による自己診断方法の適用
を受けた衛星通信用ＤＡＭＡ通信装置の構成を示すブロ
ック図、第２図（ａ）、（ｂ）はいず ゛れも上
記ＤＡＭＡ通信装置の動作を説明するためのタイムチャ
ート、第３図は５ｃｐｃ方式と集中制御型の要求時回線
割当て方式とを採用している一般的な衛星通信システム
を示す概略構成図、第４図は通信衛星に搭載されている
中継器中における５ｃｐｃキャリアの配列例を示す概念
図、第５図は親局あるいは各子局の各局にそなえられる
従来のＤＡＭＡ通信装置の構成例を示すブロック図であ
る。
図において、１−通信衛星、２−親局、３ａ〜３ｎ−子
局、４．５・・・−共通線信号回線用の５ｅｐＣキャリ
ア、６８〜６ｎ−通話路用の５ｃｐｃキャリア、７−Ｃ
３Ｃ用信号送受信装置、８・・・Ｃ８Ｃ用信号送受信回
路、１１＝ＳＣＰＣ送受信装置、１３−ＤＡＭＡ方式用
システム制御装置、１５−自己診断用信号送受信回路、
１６−送受信制御回路。
なお、図中、同一の符号は同一、又は相当部分を示して
いる。FIG. 1 is a block diagram showing the configuration of a DAMA communication device for satellite communication to which a self-diagnosis method according to an embodiment of the present invention is applied, and FIGS. 2(a) and (b) show the above DAMA communication. A time chart for explaining the operation of the device, Fig. 3 is a schematic configuration diagram showing a general satellite communication system that employs the 5cpc method and a centralized control type on-demand line allocation method, and Fig. 4 is a communication diagram. FIG. 5 is a conceptual diagram showing an example of the arrangement of 5 CPC carriers in a repeater mounted on a satellite. FIG. 5 is a block diagram showing an example of the configuration of a conventional DAMA communication device provided in a master station or each slave station. In the figure, 1-communication satellite, 2-master station, 3a-3n-slave station, 4.5...-5epC carrier for common signal line, 68-6n-5cpc carrier for communication path, 7-C
3C signal transmitting/receiving device, 8... C8C signal transmitting/receiving circuit, 11=SCPC transmitting/receiving device, 13-system control device for DAMA method, 15-signal transmitting/receiving circuit for self-diagnosis,
16-Transmission/reception control circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
のを通信衛星の中継器内に多数配置できるようにした１
キャリア１通話路方式としてのＳＣＰＣ方式と、親局と
多数の子局とを設け上記ＳＣＰＣ方式におけるキャリア
のうち１または複数のキャリアを上記の親局と子局との
間の呼接続制御のための共通線信号回線として使用する
とともに、残りのキャリアを通話路として使用し、上記
任意の子局間の接続時に上記共通線信号回線を使つての
起呼子局からの回線割当て要求信号を上記親局が受け付
けると、上記通話路から空き状態のものを選び上記起呼
子局および被呼子局へ上記共通線信号回線を介して指示
し通信を行なわしめる上記親局による上記の起呼子局と
被呼子局との間の呼接続制御を集中管理する集中制御型
の要求時回線割当て方式としてのＤＡＭＡ方式とを組み
合わせた衛星通信システムにおける上記の親局もしくは
子局にそなえられるＤＡＭＡ通信装置において、上記共
通線信号回線を使つて自己診断用信号を送信するととも
に、上記通信衛星の中継器により中継され他局を経由し
た上記自己診断信号を受信してから、送信時における上
記自己診断用信号と受信時における上記自己診断用信号
とを比較してその比較結果に基づき上記共通線信号回線
系統の状態を自己診断することを特徴とする衛星通信用
ＤＡＭＡ通信装置の自己診断方法。One communication path is configured with one carrier, and many devices configured in this way can be placed in repeaters of communication satellites1.
An SCPC method is provided as a carrier 1 channel method, a parent station and a large number of slave stations, and one or more carriers among the carriers in the SCPC method are used for call connection control between the master station and slave stations. In addition to using the common line signal line, the remaining carrier is used as a communication path, and when connecting any of the slave stations, the common line signal line is used to send a line allocation request signal from the calling slave station to the master station. When the call path is accepted, the calling slave station and the called slave station are selected by the master station to select an empty communication path and instruct the calling slave station and the called slave station to communicate via the common channel signal line. In the DAMA communication device provided in the above-mentioned master station or slave station in a satellite communication system that combines the DAMA method as a centralized control type on-demand line assignment method for centrally managing call connection control between In addition to transmitting a self-diagnosis signal using a signal line, the self-diagnosis signal is relayed by the repeater of the communication satellite and passed through another station, and then the self-diagnosis signal at the time of transmission and the time of reception are transmitted. A self-diagnosis method for a DAMA communication device for satellite communication, characterized in that the state of the common signal line system is self-diagnosed based on the comparison result by comparing the self-diagnosis signal with the self-diagnosis signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25861387A JPH0199329A (en) | 1987-10-13 | 1987-10-13 | Self-diagnosis method for dama communication equipment for satellite communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25861387A JPH0199329A (en) | 1987-10-13 | 1987-10-13 | Self-diagnosis method for dama communication equipment for satellite communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0199329A true JPH0199329A (en) | 1989-04-18 |
Family
ID=17322706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25861387A Pending JPH0199329A (en) | 1987-10-13 | 1987-10-13 | Self-diagnosis method for dama communication equipment for satellite communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0199329A (en) |
-
1987
- 1987-10-13 JP JP25861387A patent/JPH0199329A/en active Pending
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