JPS6314534A - Communication equipment using contention system - Google Patents
Communication equipment using contention systemInfo
- Publication number
- JPS6314534A JPS6314534A JP61159256A JP15925686A JPS6314534A JP S6314534 A JPS6314534 A JP S6314534A JP 61159256 A JP61159256 A JP 61159256A JP 15925686 A JP15925686 A JP 15925686A JP S6314534 A JPS6314534 A JP S6314534A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- address
- frame
- transmission path
- storage means
- 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 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 142
- 238000000926 separation method Methods 0.000 claims description 13
- 230000010365 information processing Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、伝送路を共有するコンテンション方式のパケ
ット通信システムにおける情報通信装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information communication device in a contention-based packet communication system that shares a transmission path.
本発明はコンテンション方式の異なる伝送路間で情報通
信を行う場合、各伝送路への送信を制御する機能を有す
る通信装置を各伝送路に接続することにより、伝送路上
の伝送効率を向上させるようにしたものである。The present invention improves transmission efficiency on a transmission path by connecting a communication device having a function of controlling transmission to each transmission path to each transmission path when information is communicated between transmission paths with different contention methods. This is how it was done.
従来は各伝送路を、電気的なレベルで接続するリピータ
、あるいは通信手順を用いて一方の伝送路中のパケット
を受信した後、他方の伝送路に対し通信手順を用いて送
信しなおすゲートウェイで接続し、伝送路間の情報通信
を行なっていた。Conventionally, each transmission path was connected using a repeater that connected them at an electrical level, or a gateway that used communication procedures to receive packets on one transmission path and then retransmitted them to the other transmission path using communication procedures. and communicated information between the transmission lines.
リピータを介して伝送路間の通信を行う方式では、リピ
ータが通信を制御する機能を持たないため、各伝送路内
において通信を行う場合にも一方の伝送路の情報が他の
伝送路にも送信され伝送効率の低下を紹（、各伝送路に
接続されている情報処理装置数が少ない場合にはそれほ
ど大きな伝送効率の低下はみられないものと思われるが
、前記情報処理装置数の増加および伝送路数の増加に供
り、前記伝送効率の低下は著しいものとなる。In the method of communicating between transmission paths via repeaters, the repeaters do not have the function to control communication, so even when communication is performed within each transmission path, information on one transmission path is transmitted to the other transmission path. Introducing the decrease in transmission efficiency (if the number of information processing devices connected to each transmission path is small, there will not be such a large decrease in transmission efficiency, but as the number of information processing devices increases) As the number of transmission paths increases, the reduction in transmission efficiency becomes significant.
またゲートウェイを用いる場合には、通信手順をふまえ
た上で伝送を行うため、ゲートウェイ自身が持っている
通信手順に従ったパケット以外は伝送できないという欠
点を存していた。Furthermore, when using a gateway, transmission is performed based on communication procedures, so there is a drawback that packets other than packets that follow the communication procedures of the gateway itself cannot be transmitted.
上記問題点を解決するために、本発明においては伝送路
間の通信を行う装置として、各伝送路への送信を通信手
順と独立に制御できる機能を有する通信装置を用いるこ
とにした。In order to solve the above problems, in the present invention, a communication device having a function of controlling transmission to each transmission path independently of the communication procedure is used as a device for communicating between transmission paths.
上記の様な構成により、各伝送路内で通信を行う場合に
は前記通信装置において他の伝送路への情報通信を停止
し、各伝送路間で通信を行う場合に他の伝送路へも通信
を行うので、各伝送路上の伝送効率を向上させることが
できる。With the above configuration, when communicating within each transmission path, the communication device stops information communication to other transmission paths, and when communicating between each transmission path, it also stops information communication to other transmission paths. Since communication is performed, the transmission efficiency on each transmission path can be improved.
以下に本発明の実施例を図面に基づいて説明する。第１
図は伝送路網の一例であり、１，２は伝送路、３は本発
明による通信装置、４〜１１は情報処理装置である。各
情報処理装置４〜７は伝送路１を共有し、情報処理装置
８〜１１は伝送路２を共有し、各々の伝送路内および各
伝送路間においてコンテンション方式で通信を行う。Embodiments of the present invention will be described below based on the drawings. 1st
The figure shows an example of a transmission line network, where 1 and 2 are transmission lines, 3 is a communication device according to the present invention, and 4 to 11 are information processing devices. Each of the information processing devices 4 to 7 shares the transmission path 1, and the information processing devices 8 to 11 share the transmission path 2, and perform communication within each transmission path and between each transmission path using a contention method.
第２図は第１図の通信装置３のブロック図であり、伝送
路１から伝送路２に情報通信を行う場合について説明す
る。伝送路１に接続されている情報処理装置（第１図４
〜７）から送信された伝送フレームは伝送路アクセス手
段１２を通じて、第１のアドレス分離手段１３に送信さ
れる。該第１のアドレス分離手段１３においては第３図
の第１のアドレス分離のアルゴリズムに示すように、伝
送路１からの受信フレームより、まず受信局アドレスを
分離しく行程３Ａ）アドレス比較手段１４に送信する（
行程３Ｂ）、また前記受信フレームは、フレーム記憶手
段１５に送信し同手段１５に格納する。前記アドレス比
較手段１４においては第４図のアドレス比較のアルゴリ
ズムに示すように、まず前記受信局アドレスを読み込み
（行程４Ａ）アドレス記憶手段１６に格納されているア
ドレスと比較していき（行程４Ｂ）一致したアドレスが
あるか調べ（行程４Ｃ）、−敗したものがあれば一致信
号を第１の送信制御手段１７に送信し、一致したものが
なければ送信しない、前記第１の送信制御手段１７にお
いては第５図第１の送信制御のアルゴリズムに示すよう
に、一致信号が入力されたかどうかを識別しく行程５Ａ
）一致信号が入力されれば前記フレーム記憶手段１５に
記憶されている伝送路１からの伝送フレームの送信を停
止し、一致信号が入力されなければ前記伝送フレームを
伝送路２に送信する（行程５Ｂ）、従って前記アドレス
記憶手段１６に記憶されているアドレスと一致しない場
合に限り、前記伝送フレームは伝送路２ら送信されるこ
とになる。一方前記第１のアドレス分離手段１３は、第
３図に示すように伝送路１からの前記伝送フレームより
受信アドレスを分離した後、前記伝送フレームより送信
局アドレスを分離しく行程３Ｇ）アドレス比較格納手段
１８に送信する（行程３Ｄ）。FIG. 2 is a block diagram of the communication device 3 shown in FIG. 1, and a case where information is communicated from the transmission path 1 to the transmission path 2 will be described. Information processing equipment connected to transmission path 1 (Fig. 1 4)
The transmission frame transmitted from 7) to 7) is transmitted to the first address separation means 13 via the transmission path access means 12. In the first address separation means 13, as shown in the first address separation algorithm in FIG. Send(
In step 3B), the received frame is transmitted to the frame storage means 15 and stored therein. As shown in the address comparison algorithm of FIG. 4, the address comparing means 14 first reads the receiving station address (step 4A) and compares it with the address stored in the address storage means 16 (step 4B). It is checked whether there is a matching address (step 4C), and if there is a failed address, a match signal is sent to the first transmission control means 17, and if there is no match, no transmission is performed, said first transmission control means 17. In step 5A, as shown in the transmission control algorithm shown in FIG.
) If a coincidence signal is input, the transmission of the transmission frame stored in the frame storage means 15 from the transmission path 1 is stopped, and if a coincidence signal is not input, the transmission frame is transmitted to the transmission path 2 (step 5B), therefore, the transmission frame will be transmitted from the transmission line 2 only if the address does not match the address stored in the address storage means 16. On the other hand, the first address separation means 13 separates the received address from the transmission frame from the transmission line 1 as shown in FIG. It is transmitted to the means 18 (step 3D).
該アドレス比較格納手段１８においては第６図のアドレ
ス比較格納のアルゴリズムに示すように、まず前記送信
局アドレスを読み込み（工程６Ａ ）前記アドレス記
憶手段１６に格納されているアドレスと比較していき（
行程６Ｂ）一致したアドレスがあるか調べ（行程６Ｃ）
、一致したものがなければ前記送信局アドレスを該アド
レス記憶手段１６に格納する（行程６Ｄ）、従って、該
アドレス比較格納手段１８を伝送路１からの伝送フレー
ムが送信される毎度に繰り返し行なえば、伝送路１に接
続されている情報処理装置（第１図４〜７）のアドレス
がすべて前記アドレス記憶手段１６に格納されることに
なる。さらに、前述したように受信局アドレスが該アド
レス記憶手段１６に格納されているアドレスと一致した
伝送フレームであれば該伝送フレームは伝送路２に送信
されないため、本発明による前記通信装置３は伝送路１
に接続された情報処理装置（４〜７）同志で通信を行な
う場合には伝送路１からの伝送フレームを伝送路２に送
信せず、伝送路２に接続された情報処理装置（８〜１１
）に通信する場合に限り伝送路２に送信することになる
０次に伝送路２から伝送路１に情報通信を行う場合につ
いて説明する。伝送路２に接続された情報処理袋Ｗ（第
１図８〜１１）から送信された伝送フレームは伝送路ア
クセス手段１２を通じて第２のアドレス分離手段１９に
送信される。該第２のアドレス分離手段１９においては
第７図の第２のアドレス分離のアルゴリズムに示すよう
に、まず前記伝送フレームより受信局アドレスを分離し
く行程７ａ）前記アドレス比較手段１４に送信する（行
程７ｂ）、また、前記伝送フレームは前記フレーム記憶
手段１５に格納しておく、前記アドレス比較手段１４に
おいては第４図のアドレス比較のアルゴリズムに従い、
前記受信局アドレスを前記アドレス記憶手段１６に格納
されているアドレスと比較していき、一致したアドレス
があれば一致信号を第２の送信制御手段２０に送信する
。該第２の送信制御手段２０においては第８図の第２の
送信制御のアルゴリズムに示すように、一致信号が入力
されたかどうかを識別しく工程８Ａ）一致信号が入力さ
れれば前記フレーム記憶手段１５に記憶されている前記
伝送フレームを伝送路アクセス手段１２を通じて伝送路
１に送信し、一致信号が入力されなければ前記伝送フレ
ームの送信を停止する。一方、前記アドレス記憶手段１
６には前記アドレス比較格納手段１８により伝送路１に
接続されている情報処理装置（４〜７）のアドレスが格
納さているため、受信局アドレスが伝送路１に接続さて
いる情報処理装置のアドレスと一致した伝送フレームの
みが伝送路１に送信されることになる。As shown in the address comparison and storage algorithm of FIG. 6, the address comparison and storage means 18 first reads the transmitting station address (step 6A) and compares it with the address stored in the address storage means 16 (
Step 6B) Check if there is a matching address (Step 6C)
If there is no match, the transmitting station address is stored in the address storage means 16 (step 6D). Therefore, if the address comparison storage means 18 is repeated every time a transmission frame is transmitted from the transmission path 1, , all the addresses of the information processing devices (FIG. 1 4 to 7) connected to the transmission path 1 are stored in the address storage means 16. Furthermore, as described above, if the transmission frame has a reception station address that matches the address stored in the address storage means 16, the transmission frame is not transmitted to the transmission path 2, so the communication device 3 according to the present invention Road 1
When the information processing devices (4 to 7) connected to the
), the case where information is communicated from the zero-order transmission path 2 to the transmission path 1 will be described. A transmission frame transmitted from the information processing bag W (FIG. 1 8-11) connected to the transmission path 2 is transmitted to the second address separation means 19 via the transmission path access means 12. As shown in the second address separation algorithm in FIG. 7, the second address separation means 19 first separates the receiving station address from the transmission frame and transmits it to the address comparison means 14 (step 7a). 7b), the transmission frame is stored in the frame storage means 15, and the address comparison means 14 follows the address comparison algorithm shown in FIG.
The receiving station address is compared with the address stored in the address storage means 16, and if there is a matching address, a matching signal is transmitted to the second transmission control means 20. In the second transmission control means 20, as shown in the second transmission control algorithm of FIG. The transmission frame stored in the transmission frame 15 is transmitted to the transmission line 1 through the transmission line access means 12, and if no matching signal is input, the transmission of the transmission frame is stopped. On the other hand, the address storage means 1
6 stores the addresses of the information processing devices (4 to 7) connected to the transmission path 1 by the address comparison storage means 18, so that the receiving station address is the address of the information processing device connected to the transmission path 1. Only the transmission frames that match are transmitted to the transmission path 1.
以上述べたように、本発明による伝送路間の通信装置３
は伝送路１から伝送路２および伝送路２から伝送路１へ
の通信を目的とした伝送フレームのみを送信し、前記各
伝送路内での通信を目的とした伝送フレームは送信しな
い機能を持つ、なお、第１回目の送信の場合には、前記
アドレス記憶手段１６にアドレスが格納されていないた
め、前記伝送フレームの受信局アドレスとは無関係に伝
送路１から伝送路２および伝送路２から伝送路１へ前記
伝送フレームが送信されるが、伝送路１からの送信を繰
り返し行なえば前記アドレス記憶手段１６に伝送路ｌに
接続された情報処理装置のアドレスが格納されていくた
め、前記通信装置は前述機能を十分に発揮するようにな
る。As described above, the communication device 3 between transmission paths according to the present invention
has the function of transmitting only transmission frames intended for communication from transmission path 1 to transmission path 2 and from transmission path 2 to transmission path 1, and not transmitting transmission frames intended for communication within each of the transmission paths. In the case of the first transmission, since no address is stored in the address storage means 16, the data is transmitted from transmission path 1 to transmission path 2 and from transmission path 2 regardless of the receiving station address of the transmission frame. The transmission frame is transmitted to the transmission path 1, but if the transmission from the transmission path 1 is repeated, the address of the information processing device connected to the transmission path 1 is stored in the address storage means 16, so that the transmission frame is transmitted to the transmission path 1. The device now fully performs the aforementioned functions.
上述のごとく本発明による通信装置によれば、二本の伝
送路間で通信を行う場合一方の伝送路から他の伝送路へ
の通信を目的とした伝送フレームのみ送信するため、各
伝送路は不必要な伝送に関与することなく、送信要求が
きわめて多い場合には特に伝送効率の大幅な向上を実現
できる。また伝送路の数は二本に限ることなく、アドレ
スを記憶するメモリーの容量の許す限り複数の相互に接
続された伝送路網に対しても適用できる。As described above, according to the communication device according to the present invention, when communicating between two transmission paths, only transmission frames intended for communication from one transmission path to the other transmission path are transmitted, so each transmission path Without being involved in unnecessary transmissions, a significant improvement in transmission efficiency can be achieved, especially when there are a large number of transmission requests. Further, the number of transmission lines is not limited to two, and can be applied to a plurality of interconnected transmission line networks as long as the capacity of the memory for storing addresses allows.
図は本発明の一実施例を示すもので、第１図は伝送路網
の一例、第２図は本発明による通信装置のブロック図、
第３図は第１のアドレス分離のアルゴリズム、第４図は
アドレス比較のアルゴリズム、第５図は第１の送信制御
のアルゴリズム、第６図はアドレス比較格納のアルゴリ
ズム、第７図は第２のアドレス分離のアルゴリズム、第
８図は第２の送信制御のアルゴリズムである。なお図中
の番号は以下のものを示している。
１．２ ・・・伝送路
３・・・通信装置
４〜１１・・・情報処理装置
１２・・・伝送路アクセス手段
１３・・・第１のアドレス分離手段
１４・・・アドレス比較手段
１５・・・フレーム記憶手段
１６・・・アドレス記憶手段
１７・・・第１の送信制御手段
１８・・・アドレス比較格納手段
１９・・・第２のアドレス分離手段
２０・・・第２の送信制御手段
以
出願人 セイコー電子工業株式会
代理人 弁理士 最 上 務（他１
ｆ云繕路綱の一例
第１図
第３図
アト°ルス比較の了ルコ゛リズ乙
第４ 図The figures show an embodiment of the present invention, in which Figure 1 is an example of a transmission line network, Figure 2 is a block diagram of a communication device according to the present invention,
Figure 3 shows the first address separation algorithm, Figure 4 shows the address comparison algorithm, Figure 5 shows the first transmission control algorithm, Figure 6 shows the address comparison storage algorithm, and Figure 7 shows the second address comparison algorithm. The address separation algorithm shown in FIG. 8 is the second transmission control algorithm. Note that the numbers in the figure indicate the following. 1.2...Transmission path 3...Communication devices 4-11...Information processing device 12...Transmission path access means 13...First address separation means 14...Address comparison means 15. Frame storage means 16 Address storage means 17 First transmission control means 18 Address comparison storage means 19 Second address separation means 20 Second transmission control means Applicant: Seiko Electronic Industries Co., Ltd. Agent, Patent Attorney Mogami (Others 1) An example of a repair route Figure 1 Figure 3 Comparison of Atolus Figure 4
Claims (1)
レームを通信する第１の伝送路から前記フレームを入力
し、該フレームより送信局アドレスと受信局アドレスを
識別する第１のアドレス分離手段と、前記送信局アドレ
スを記憶するアドレス記憶手段と、該アドレス記憶手段
中の送信局アドレスと前記アドレス分離手段によって識
別された受信局アドレスを比較するアドレス比較手段と
、該アドレス比較手段の結果に応じて前記入力されたフ
レームの第２の伝送路への出力を制御する第１の送信制
御手段と、第２の伝送路より入力されるフレームから受
信局アドレスを識別する第２のアドレス分離手段と、該
識別された受信局アドレスと前記アドレス記憶手段に貯
えられたアドレスとの比較結果に基づいて、前記第２の
伝送路からのフレームの前記第１の伝送路への出力を制
御する第２の送信制御手段を有することを特徴とする、
コンテンション方式の通信装置。At least, a first address separating means inputs the frame from a first transmission path for communicating a frame having a transmitting station address and a receiving station address, and identifies the transmitting station address and the receiving station address from the frame; address storage means for storing a transmitting station address; address comparison means for comparing the transmitting station address in the address storage means with the receiving station address identified by the address separation means; a first transmission control means for controlling output of an input frame to a second transmission path; a second address separation means for identifying a receiving station address from a frame input from the second transmission path; a second transmission that controls output of frames from the second transmission path to the first transmission path based on a comparison result between the identified receiving station address and the address stored in the address storage means; characterized by having a control means,
Contention type communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61159256A JPS6314534A (en) | 1986-07-07 | 1986-07-07 | Communication equipment using contention system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61159256A JPS6314534A (en) | 1986-07-07 | 1986-07-07 | Communication equipment using contention system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6314534A true JPS6314534A (en) | 1988-01-21 |
Family
ID=15689780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61159256A Pending JPS6314534A (en) | 1986-07-07 | 1986-07-07 | Communication equipment using contention system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6314534A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03188729A (en) * | 1989-12-19 | 1991-08-16 | Toshiba Corp | Inter-lan interface equipment |
| JPH04273735A (en) * | 1991-02-28 | 1992-09-29 | Nec Corp | Local area network bridge device |
-
1986
- 1986-07-07 JP JP61159256A patent/JPS6314534A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03188729A (en) * | 1989-12-19 | 1991-08-16 | Toshiba Corp | Inter-lan interface equipment |
| JPH04273735A (en) * | 1991-02-28 | 1992-09-29 | Nec Corp | Local area network bridge device |
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