JPS62236239A - Line multiplex loop network - Google Patents

Line multiplex loop network

Info

Publication number
JPS62236239A
JPS62236239A JP8034286A JP8034286A JPS62236239A JP S62236239 A JPS62236239 A JP S62236239A JP 8034286 A JP8034286 A JP 8034286A JP 8034286 A JP8034286 A JP 8034286A JP S62236239 A JPS62236239 A JP S62236239A
Authority
JP
Japan
Prior art keywords
station
node
communication
line
time slot
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.)
Granted
Application number
JP8034286A
Other languages
Japanese (ja)
Other versions
JPH0567098B2 (en
Inventor
Hiroshi Shimizu
洋 清水
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP8034286A priority Critical patent/JPS62236239A/en
Publication of JPS62236239A publication Critical patent/JPS62236239A/en
Publication of JPH0567098B2 publication Critical patent/JPH0567098B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To make the number of a two-way communication for a time slot into 1 or above by executing the incoming communication and the outgoing communication of the two-way communication by using a loop transmission line where a signal is propagated mutually in the reverse direction. CONSTITUTION:Node stations (NS) 1-6 and a control station (SS) 20 are connected with transmission lines 11 and 12. When between NS1 and 2, the two-way communication is executed by a time slot (TS) 3 of the transmission lines 11 and 12, the table of the SS 20 is as shown in the figure. At such a time, when a communication request occurs from an NS3 to 5, the SS 20 refers to the above-mentioned table, links 3-4 and 4-5 between the NS 3 and 5 into 1 at the TS 3, the TS3 is used for the NS 3 and the TS3 of the transmission line 12 is used for the NS 5. Further, when the communication request is executed from the NS 6 to 5, the SS 20 makes a link 5-6 of the TS 3 into 1, the TS3 of the transmission line 11 is used for the NS 5 and the TS3 of the transmission line 12 is used for the NS6. As such a result, by using the TS3 of the transmission lines 11 and 12, three two-way communications are supplied.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は複数のノードステーションがループ状伝送路に
より接続されたループネットワーク、特に、回線多重方
式を用いているループネットワークに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a loop network in which a plurality of node stations are connected by a loop-shaped transmission path, and particularly to a loop network using a line multiplexing method.

（従来の技術） 回線多重方式を用いたループネットワークにおいては、
双方向通信を行なう場合、第３図に概念図で示すように
、双方向通信を１つのタイムスロットを用いて行なうこ
とができる。例えば、ノードステーション１とノードス
テーション２とが通信を行なう場合、ノードステーショ
ンｌからノードステーション２への通信とノードステー
ション２からノードステーション１への通信とは同一タ
イムスロットを使用することができる。即ち、ループ状
伝送路１００回線（タイムスロット）数と同じ数の双方
向通信を提供することができる。(Prior art) In a loop network using line multiplexing,
When performing bidirectional communication, it is possible to perform bidirectional communication using one time slot, as shown in a conceptual diagram in FIG. For example, when node station 1 and node station 2 communicate, communication from node station 1 to node station 2 and communication from node station 2 to node station 1 can use the same time slot. That is, it is possible to provide the same number of bidirectional communications as the number of loop-shaped transmission lines (100 lines (time slots)).

（発明が解決しようとする問題点） 高価なループ状伝送路を使用する場合、タイムスロット
あたりの双方向通信の数を増やせることが望ましい。し
かしながら、従来方式では、ｌタイムスロットあたりの
双方向通信の数は１に制約されている。(Problems to be Solved by the Invention) When using an expensive loop-shaped transmission path, it is desirable to be able to increase the number of bidirectional communications per time slot. However, in the conventional system, the number of bidirectional communications per time slot is limited to one.

そこで、本発明の目的は、タイムスロットあたりの双方
向通信の数を１以上にすることのできる回線多重ループ
ネットワークを提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a line multiplex loop network that can increase the number of bidirectional communications per time slot to one or more.

（問題点を解決するための手段） 前述の問題点を解決するために本発明が提供する回線多
重ループネットワークは、管理ステーションと複数の７
−ドステーシヨ／とを互いに逆方向に信号が伝搬する複
数の回線多重ループ伝送路で接続してなり、前記管理ス
テーションは隣接ノードステーション開缶の回線多重ル
ープ伝送路の各回線の使用状況を示すテーブルを有し、
通信要求を有するノードステーションは通信要求と相手
ノードステーションのアドレスとを前記管理ステーショ
ンに通知し、前記管理ステー７ヨ／は前記テーブルを参
照し、前記の通信要求を行なったノードステーションに
対し使用タイムスロット番号を通知することを特徴とす
る。(Means for Solving the Problems) In order to solve the above-mentioned problems, the line multiplex loop network provided by the present invention has a management station and a plurality of seven
- A plurality of line multiple loop transmission lines in which signals propagate in opposite directions mutually connect the nodes/stations, and the management station has a table showing the usage status of each line of the line multiple loop transmission lines of the adjacent node stations. has
A node station having a communication request notifies the management station of the communication request and the address of the other node station, and the management station refers to the table and determines the usage time for the node station that made the communication request. It is characterized by notifying the slot number.

（発明の原理） 本発明の原理は、双方向通信の上りの通信と下りの通信
とを互いに逆方向に信号が伝搬するループ伝送路を用い
て行なうことにある。(Principle of the Invention) The principle of the present invention is to perform upstream communication and downstream communication of bidirectional communication using a loop transmission path in which signals propagate in opposite directions.

（実施例） 本発明の一実施例を概念図で第１図に示す。本実施例に
おいては、ノードステーション１，２゜３、　４．　５
ｔ　　６及び管理ステーション２０とが互いに逆方向の
ループ伝送路１１．１２により接続されている。今、ノ
ードステーションｌと２との間で双方向通信がループ伝
送路１１．１２のタイムスロツ）　３　（ＴＩ９３）を
用いて行なわれているとする。この時の管理ステーショ
ン２０のテーブルをＷＪ２図に示す。第２図のテーブル
はタイムスロット（Ｔ８１　、Ｔ１３Ｎ）毎に隣接ノー
ドステーション間のリンクの使用状況を記録している。(Example) An example of the present invention is shown in a conceptual diagram in FIG. 1. In this embodiment, node stations 1, 2, 3, 4. 5
t 6 and the management station 20 are connected to each other by loop transmission lines 11.12 in opposite directions. Suppose now that bidirectional communication is being carried out between node stations 1 and 2 using time slots ) 3 (TI93) of loop transmission path 11.12. The table of the management station 20 at this time is shown in Figure WJ2. The table in FIG. 2 records the usage status of links between adjacent node stations for each time slot (T81, T13N).

ノードステーション１と２との間のタイムスロット３（
Ｔ８３）で通信が行なわれているので、Ｔａ２のリンク
１−２の欄が１となり、Ｔａ２の他のり／りはＯとなっ
ている。この時、ノードステーション３からノードステ
ーション５への通信の要求が・管理ステーション２０に
行なわれたとする。管理ステーション２０け、第２図の
テーブルを参照し、Ｔａ２でのノードステーション３と
５の間のり／り３−４．４−５を１にし、ノードステー
ション３に対してはループ伝送路１１のタイムスロット
３を、ノードステーション５に対してはループ伝送路１
２のタイムスロット３を使用するよう通知する。更に、
ノードステーション６からノードステーション５への通
信要求があったとする。管理ステー７ヨン２０は、前述
のテーブルを参照するとＴ８３のリンク５−６がＯとな
っているので、これを１にし、ノードステーション５に
対してはループ伝送路ｌｌのタイムスロット３を、ノー
ドステーション６に対してはループ伝送路１２のタイム
スロット３を使用するよう通知する。この結果、第１図
に点線で示すように、２つのループ伝送路ｌｘ、１２の
タイムスロット３即ち、２タイムスロツトを用いて３つ
の双方向通信が提供される。なお、管理ステーション２
０は、ノードステーション間の双方向通信が終了したと
き、前記のテーブル内の使用り／りを０にする。Time slot 3 between node stations 1 and 2 (
Since communication is being performed at T83), the link 1-2 column of Ta2 is 1, and the other ports of Ta2 are O. At this time, it is assumed that a request for communication from the node station 3 to the node station 5 is made to the management station 20. The management station 20 refers to the table in FIG. time slot 3 and loop transmission line 1 for node station 5.
2 to use time slot 3. Furthermore,
Assume that there is a communication request from node station 6 to node station 5. When the management station 20 refers to the table mentioned above, the link 5-6 of T83 is O, so it is set to 1, and for the node station 5, the time slot 3 of the loop transmission line 1 is assigned to the node. Station 6 is notified to use time slot 3 of loop transmission line 12. As a result, three bidirectional communications are provided using two loop transmission lines lx and 12 time slots 3, ie, 2 time slots, as shown by dotted lines in FIG. In addition, management station 2
0 sets the usage in the table to 0 when the two-way communication between the node stations ends.

ｖｍス−ｙ−−ジョン２０と各ノードステーション間の
通信は、例えば回線多重ループの１タイムスロットｔ−
使用し、管理ステーション２０のポーリング制御により
容易に実現できる。Communication between the vm station 20 and each node station takes place, for example, in one time slot t of a line multiplex loop.
This can be easily realized by polling control of the management station 20.

（発明の効果） 本発明によれば、以上に詳しく説明したように、多重回
線ループのタイムスロットあたりの双方向通信の数を１
以上にできる。(Effects of the Invention) According to the present invention, as explained in detail above, the number of bidirectional communications per time slot of a multiline loop can be reduced to 1.
I can do more than that.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す概念図、第２図は本実
施例に用いる管理テーブルを示す図、第３図は従来の回
線多重ループネットワークを示す概念図である。 図において、！、　　２．　３．　４．　５．　６はノ
ードステーション、１０，１１．１２はループを示す。FIG. 1 is a conceptual diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a management table used in this embodiment, and FIG. 3 is a conceptual diagram showing a conventional line multiplex loop network. In the figure! , 2. 3. 4. 5. 6 is a node station, and 10, 11, and 12 are loops.

Claims (1)

【特許請求の範囲】[Claims] 管理ステーションと複数のノードステーションとを互い
に逆方向に信号が伝搬する複数の回線多重ループ伝送路
で接続してなり、前記管理ステーションは隣接ノードス
テーション間毎の回線多重ループ伝送路の各回線の使用
状況を示すテーブルを有し、通信要求を有するノードス
テーションは通信要求と相手ノードステーションのアド
レスとを前記管理ステーションに通知し、前記管理ステ
ーションは前記テーブルを参照し、前記の通信要求を行
なつたノードステーションに対し使用タイムスロット番
号を通知することを特徴とする回線多重ループネットワ
ーク。A management station and a plurality of node stations are connected by a plurality of line multiple loop transmission lines in which signals propagate in opposite directions, and the management station uses each line of the line multiple loop transmission line between adjacent node stations. A node station that has a table indicating the status and has a communication request notifies the communication request and the address of the other node station to the management station, and the management station refers to the table and makes the communication request. A circuit multiplexed loop network characterized by notifying a used time slot number to a node station.
JP8034286A 1986-04-08 1986-04-08 Line multiplex loop network Granted JPS62236239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8034286A JPS62236239A (en) 1986-04-08 1986-04-08 Line multiplex loop network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8034286A JPS62236239A (en) 1986-04-08 1986-04-08 Line multiplex loop network

Publications (2)

Publication Number Publication Date
JPS62236239A true JPS62236239A (en) 1987-10-16
JPH0567098B2 JPH0567098B2 (en) 1993-09-24

Family

ID=13715584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8034286A Granted JPS62236239A (en) 1986-04-08 1986-04-08 Line multiplex loop network

Country Status (1)

Country Link
JP (1) JPS62236239A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0216838A (en) * 1988-04-21 1990-01-19 At & T And Philips Telecommun Bv Line and/or packet exchange communication exchange system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0216838A (en) * 1988-04-21 1990-01-19 At & T And Philips Telecommun Bv Line and/or packet exchange communication exchange system

Also Published As

Publication number Publication date
JPH0567098B2 (en) 1993-09-24

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