JPH02189045A - Ring communication system - Google Patents
Ring communication systemInfo
- Publication number
- JPH02189045A JPH02189045A JP933489A JP933489A JPH02189045A JP H02189045 A JPH02189045 A JP H02189045A JP 933489 A JP933489 A JP 933489A JP 933489 A JP933489 A JP 933489A JP H02189045 A JPH02189045 A JP H02189045A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- central station
- signal
- station equipment
- control
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100064317 Arabidopsis thaliana DTX41 gene Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は環状通信方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a ring communication system.
従来、環状通信システムにおいては、回線交換制御信号
の送受信を中央局装置から各端局装置への親ポーリング
方式により行なっている。Conventionally, in a ring communication system, circuit switching control signals are transmitted and received from a central station to each terminal station using a parent polling method.
上述した従来の環状通信システムにおいては、中央局装
置からのポーリング方式を採っているため、端局装置か
ら中央局装置に送信したい信号があっても中央局装置か
ら自局宛ポーリングがかからなければ送信できない、こ
の結果、回線交換の制御処理能力の低下を招く。The conventional ring communication system described above uses a polling method from the central station, so even if there is a signal that the terminal station wants to send to the central station, the central station must poll its own station. As a result, the control processing capacity of circuit switching is reduced.
本発明の環状通信方式は通信網全体を監視制御する中央
局装置と、この中央局装置に従属し収容端末回線を監視
制御する複数の端局装置と、前記中央局装置及び前記端
局装置を接続する環状伝送路とを備え、通信チャンネル
の特定の制御チャンネルにより前記中央局装置と前記端
局装置との間で回線交換に必要な制御信号を送受信する
際、前記中央局装置から前記端局装置のいずれかへの送
信を最優先とし、前記端局装置のいずれかから前記中央
局装置へ送信する制御信号を前記端局装置の間で回転優
先とする構成である。The ring communication system of the present invention includes a central station device that monitors and controls the entire communication network, a plurality of terminal devices that are subordinate to this central station device and that monitor and control accommodated terminal lines, and the central station device and the terminal device. a ring-shaped transmission line connecting the central station to the terminal station, and when transmitting and receiving control signals necessary for circuit switching between the central office apparatus and the terminal station apparatus using a specific control channel of a communication channel, The configuration is such that transmission to any one of the terminal devices is given top priority, and control signals transmitted from any of the terminal devices to the central office device are given priority to be rotated between the terminal devices.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
一実施例を示す第１図を参照すると、この光ループ通信
網は通信網全体を監視制御する中央制御部（Ｃ３ＣＴＬ
）１０を有する中央局装置（Ｃ８）１と、この中央局装
置に従属しかつ収容した端末回線（図示省略）を監視制
御する端局制御部（ＴＤＳＩＣＴ、Ｌ、ＴＤＳ２ＣＴＬ
、ＴＤＳ３ＣＴＬ）２０，３０．４０をそれぞれ有する
端局装置（ＴＤＳＩ、ＴＤＳ２．ＴＤＳ３）２゜３．４
と、中央局装置１及び端局装置２．３．４を環状に接続
する光伝送路５とから構成されている。この構成におい
て、通信チャンネルの特定の制御チャンネルにより中央
局装置１と端局装置２．３．４との間で回線交換制御に
必要な制御信号を送受信する。制御信号の送受信の際、
中央局装置１から端局装置２，３．４のいずれかへの送
信を最優先とし、端局装置２．３．４のいずれかから中
央局装置ｌへ送信する制御信号を端局装置２．３．４の
間で回転優先とする。Referring to FIG. 1 which shows one embodiment, this optical loop communication network has a central control unit (C3CTL) that monitors and controls the entire communication network.
) 10, and a terminal station control unit (TDSICT, L, TDS2CTL) that monitors and controls terminal lines (not shown) subordinated to and housed in this central station apparatus.
, TDS3CTL) 20, 30.40 respectively (TDSI, TDS2.TDS3) 2°3.4
and an optical transmission path 5 that connects the central office device 1 and the terminal devices 2.3.4 in a circular manner. In this configuration, control signals necessary for line switching control are transmitted and received between the central office device 1 and the terminal devices 2.3.4 using a specific control channel of the communication channel. When transmitting and receiving control signals,
The highest priority is given to transmission from the central station device 1 to either the terminal device 2 or 3.4, and the control signal to be transmitted from any of the terminal devices 2.3.4 to the central station device l is sent to the terminal device 2. .Give rotation priority between 3 and 4.
第２図に通信チャンネルの特定の制御チャンネルを用い
て中央局装置１と端局装置２，３４との間で制御信号を
送受信する場合の信号フォーマットを示す。同図におい
て、Ｃ５ＲＥＱは中央局装置１からの送信要求時に“１
゛′となり、このときは端局装置２，３．４からの送信
はできない、ＴＤＳＲＦ、Ｑは端局装置２，３．４から
の送信要求時に“１゛となる。ＴＤＳＰ’ＲＴは回転優
先を決める端局装置番号であり、ここに指定された装置
番号以下のものは優先順位が低く、かつ装置番号以上の
ものは中央局装置１に次いで最優先となる。ＴＤＳＮＯ
は中央局装置ｌからの送信時の相手先端局装置の番号ま
たは端局装置２，３．４からの送信時の発信元端局装置
の番号である。ＤＡＴＡは送受信される制御信号である
。この特定の制御チャンネルの信号は、たとえば、第１
図中の信号６０のように中央局装置１から端局装置２（
第１番目）に制御信号（ＤＡＴＡ）を送信するとき最優
先となる。特定の制御チャンネルの信号においてＣ３Ｒ
ＥＱ＝”Ｏ”（信号６１）であると、端局装置２，３゜
４は制御信号（ＤＡＴＡ）を送信できるが、要求が複数
同時に発生した場合、中央局装置１がらのＴＤＳＰＲＴ
への優先順位指定により決められた端局装置（ここでは
、端局装置２）だけが中央局装置１に送信できる（信号
６２．６３参照）。なお、この場合、信号６３は再送を
必要とする。FIG. 2 shows a signal format when control signals are transmitted and received between the central office device 1 and the terminal devices 2 and 34 using a specific control channel of the communication channel. In the figure, C5REQ is “1” when a transmission request is made from the central station device 1.
In this case, transmission from terminal equipment 2, 3.4 is not possible. TDSRF, Q becomes "1" when a transmission request is made from terminal equipment 2, 3.4. TDSP'RT gives priority to rotation. This is the terminal equipment number that determines the equipment number specified here, and equipment below the equipment number specified here has a low priority, and equipment above the equipment number has the highest priority after central office equipment 1.TDSNO
is the number of the destination end station device at the time of transmission from the central station device 1 or the number of the originating end station device at the time of transmission from the end station devices 2, 3.4. DATA is a control signal that is sent and received. The signal of this particular control channel may be e.g.
As shown in the signal 60 in the figure, from the central office equipment 1 to the terminal equipment 2 (
When transmitting the control signal (DATA) to the first control signal (DATA), the highest priority is given. C3R on specific control channel signals
When EQ="O" (signal 61), the terminal equipment 2, 3, 4 can transmit the control signal (DATA), but if multiple requests occur at the same time, the TDSPRT from the central office equipment 1
Only the terminal station device (terminal station device 2 in this case) determined by the priority order assigned to the central station device 1 can transmit data to the central station device 1 (see signals 62 and 63). Note that in this case, the signal 63 requires retransmission.
以上説明したように本発明によれば、通信チャンネル内
のある特定の制御チャンネルを用いて中央局装置と端局
装置との間で制御信号を優先方式により送受信すること
により、回線交換の制御処理能力を高めることができる
。As explained above, according to the present invention, control signals are transmitted and received between the central office equipment and the terminal equipment in a preferential manner using a certain control channel within the communication channel, thereby processing control processing for circuit switching. You can improve your abilities.
第１図は本発明の一実施例を示す構成図、第２図は同実
施例における特定の制御チャンネルの信号フォーマット
を示す図である。FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a diagram showing a signal format of a specific control channel in the same embodiment.
１・・・中央局装置、２，３．４・・・端局装置、５・
・・光伝送路。1...Central office equipment, 2, 3.4...Terminal office equipment, 5.
...Optical transmission line.
Claims (1)
置に従属し収容端末回線を監視制御する複数の端局装置
と、前記中央局装置及び前記端局装置を接続する環状伝
送路とを備え、通信チャンネルの特定の制御チャンネル
により前記中央局装置と前記端局装置との間で回線交換
に必要な制御信号を送受信する際、前記中央局装置から
前記端局装置のいずれかへの送信を最優先とし、前記端
局装置のいずれかから前記中央局装置へ送信する制御信
号を前記端局装置の間で回転優先とすることを特徴とす
る環状通信方式。A central station device that monitors and controls the entire communication network, a plurality of terminal devices that are subordinate to this central station device and monitor and control accommodated terminal lines, and a circular transmission line that connects the central station device and the terminal devices. and when transmitting and receiving control signals necessary for circuit switching between the central office device and the terminal station device using a specific control channel of the communication channel, transmission from the central station device to any one of the terminal station devices. A ring communication system characterized in that a control signal transmitted from one of the terminal stations to the central station apparatus is given priority to be rotated between the terminal stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP933489A JPH02189045A (en) | 1989-01-17 | 1989-01-17 | Ring communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP933489A JPH02189045A (en) | 1989-01-17 | 1989-01-17 | Ring communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02189045A true JPH02189045A (en) | 1990-07-25 |
Family
ID=11717573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP933489A Pending JPH02189045A (en) | 1989-01-17 | 1989-01-17 | Ring communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02189045A (en) |
-
1989
- 1989-01-17 JP JP933489A patent/JPH02189045A/en active Pending
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