JPS595760A - Multistation communication device - Google Patents
Multistation communication deviceInfo
- Publication number
- JPS595760A JPS595760A JP11370782A JP11370782A JPS595760A JP S595760 A JPS595760 A JP S595760A JP 11370782 A JP11370782 A JP 11370782A JP 11370782 A JP11370782 A JP 11370782A JP S595760 A JPS595760 A JP S595760A
- Authority
- JP
- Japan
- Prior art keywords
- station
- transmission
- communication
- stations
- communication device
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/407—Bus networks with decentralised control
- H04L12/417—Bus networks with decentralised control with deterministic access, e.g. token passing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は伝送予約できるようにしてサービス性の向上を
図った多局間通信装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-station communication device that improves serviceability by allowing transmission reservations.
ＣａＭＡ／ＣＤ （ｃａｒｒｉｅｒ−＋ｓ＠ｎｓｅ−ｍ
ｕｌｔｌｐｌ＊−ａｅｅｖｓｓｗｌｔｈ ａｏｌｌｌｓ
ｉｏｎ ｄ＠ｔ＠ｅｔｉｏｎ ）方式と呼ばれる多局間
通信装置として、例えば、第１図に示すものかあシ、通
信ケーブル、例えば、同軸ケーブルｌの両端をインピー
ダンス整合用のターミネータ２，３で終端し、タップ、
例えば、Ｔコネクタ４ ｍ １４ ｂ ＃ ４ ｃ ｆ
介して複数の局（ハーソナルステーシ、ン）５ｍ、５ｂ
、５ｅを接続している。CaMA/CD (carrier-+s@nse-m
ultlpl*-aeevsswlth aolls
An example of a multi-station communication device called the ion d@t@etion system is the one shown in Figure 1, in which both ends of a communication cable, such as a coaxial cable 1, are terminated with terminators 2 and 3 for impedance matching. , tap,
For example, T connector 4 m 14 b # 4 c f
Multiple stations (hersonal station) 5m, 5b via
, 5e are connected.
第２図は複数の局５ｍ、５ｂ、５ｅの間で送受されるパ
ケットを示し、次の各部よシ構成される。FIG. 2 shows packets sent and received between a plurality of stations 5m, 5b, and 5e, and is composed of the following parts.
Ｐ・・・・・・プリアンプル
Ｆｌ・・・・・・スタートフラッグ
Ｃ０ＮＴ・・・・・・制御情報
ＤＡＴＡ・・・・・・転送データ
Ｃ・・・・・・チェ、クビ、ト
Ｆ、・・・・・・工ンドフラ、グ
第１図の構成に訃いて、伝送フレームに空きプ四ツクが
あるとき局５ａが第２図に示すパレットを送出すると、
宛先局アドレスＤＡ（５ｂ）と制御情報Ｃ０ＮＴの内容
に基いて局５ｂに呼の設定要求がかけられ、局５ｂが他
の局と通信していないと局５ｍと５ｂの間に双方向チャ
ンネルが設定される。該チャンネルが設定されるとデー
タ転送に必要なフレーム数にわたって局５ａと局５ｂの
間でデータの送受が行われる。P...Preamble Fl...Start flag C0NT...Control information DATA...Transfer data C...Check, fire, ToF, . . . With the construction of the engineering infrastructure shown in FIG. 1, if the station 5a sends out the pallet shown in FIG. 2 when there is an empty p4 in the transmission frame,
A call setup request is made to station 5b based on the destination station address DA (5b) and the contents of control information C0NT, and if station 5b is not communicating with another station, a bidirectional channel is established between stations 5m and 5b. Set. Once the channel is set, data is sent and received between the stations 5a and 5b over the number of frames required for data transfer.
−万、パレット間に優先順位を付する場合がおり、例え
ば、同一伝送路を使用して局５無と局５Ｃが同時に局５
ｂに呼の設定要求を行うと、局５ｂはそれぞれのパレッ
トのプリンアンプルＰのビット数を比較し、プリアンプ
ルＰのビット数の大なるパレット、換言すると、プリン
アンプルＰの長さが大なるパレ、トヲ送出した局５ａあ
るいは５Ｃを選択して選択局に優先権を与えてチャンネ
ルを設定し、優先権を与えられた局５ａあるいは５ｃに
データの転送を許して複数の局間に衝突が発生しても問
題が生じないようにしている。- In some cases, priorities are assigned between pallets. For example, using the same transmission path, station 5 and station 5C are simultaneously connected to station 5.
When a call setup request is made to station 5b, station 5b compares the number of bits of preamble P in each palette, and selects a pallet with a larger number of bits in preamble P, in other words, a pallet with a larger length of preamble P. Select the station 5a or 5C that sent the data, give priority to the selected station, set the channel, and allow the station 5a or 5c given priority to transfer data to prevent collisions between multiple stations. We make sure that no problems occur even if they occur.
しかし、この多局間通信装置によれば、衝突時の優先順
位に基くチャンネルの設定を除けば、各局に平等な送信
権が割シ当てられているため、他局が送信中であるとそ
の時間帯にリアルタイムで送信しようとしても送信でき
ないことがあってサービス性の向上に制限を生じる恐れ
がある。However, according to this multi-station communication device, except for setting channels based on priority in the event of a collision, equal transmission rights are assigned to each station, so if another station is transmitting, Even if you try to send data in real time during a certain time period, it may not be possible to send it, which may limit the improvement of service performance.
本発明は上記に鑑みてなされたものであシ、サービス性
金向−ヒするため、事前に伝送予約ができるようにした
多局間通信装置を提供するものである。The present invention has been made in view of the above, and provides a multi-station communication device that allows transmission reservations to be made in advance in order to improve service efficiency.
以下本発明による他局間通信装置を詳細に説明する。The inter-station communication device according to the present invention will be explained in detail below.
第３図は本発明の一実施例を示し、第１図と同一の部分
は同一の引用数字で示したので重複する説明は省略する
が、第１図の構成に加えて多局間通信組の伝送の予約状
況に関するデータを提供するタイマーサーバー６がＴコ
ネクタ４ｎｆｆｉ介して同軸ケーブル１に接続されてい
る。FIG. 3 shows an embodiment of the present invention. The same parts as in FIG. A timer server 6 that provides data regarding the reservation status of transmission is connected to the coaxial cable 1 via a T connector 4nffi.
以上の構成において、第１図の操作と同一の操作につい
ては省略するが、第４図（→、（すにおいて、局５、轟
が局５ｂと１７時から１時間の通信について予約を行う
場合について説明すると次の逸りである６まず、局５ａ
がタイマーサーバー６にアクセスして局５ｂが１７時か
ら１時間にわたってどの局とも予約していないことを確
認したうえ、時間ｔ１において予約パケット１（ｌ送出
して伝送予約を行う。この予約がタイマーサーバー６に
記憶される（予約の成立した局５ ａ ｒ ５ ｂの記
憶部に記憶させても良い）。In the above configuration, the same operations as those in Figure 1 will be omitted, but in Figure 4 (→, To explain, the following deviation is 6. First, station 5a
accesses the timer server 6 and confirms that station 5b has not made a reservation with any station for one hour starting from 5:00 p.m., and then sends a reservation packet 1 (l) at time t1 to make a transmission reservation. The information is stored in the server 6 (it may be stored in the storage unit of the station 5a r 5b that made the reservation).
予約パケット１０は、図示しないが、宛先局、発信局、
通信開始時間、通信継続時間を少くとも有し、必要に応
じて伝送内容等を含、んでも良い。予約時間ｔｎ（１７
時）になると、局５ａは局５ｂに伝送パレット２０ｔ−
送出して通信を開始する。伝送パレット２０は、！４図
←）Ｋ示すように、次の部分を有する。Although not shown, the reservation packet 10 includes a destination station, a source station,
It has at least a communication start time and a communication continuation time, and may also include transmission contents etc. as necessary. Reservation time tn (17
), the station 5a sends the transmission pallet 20t- to the station 5b.
Send and start communication. The transmission pallet 20 is! As shown in Figure 4←)K, it has the following parts.
Ｐ・・・プリアンプル
Ｆｌ・・・スタートフラッグ
ＤＡ（５ｂ）・・・宛先局アドレス（宛先局が５ｂであ
る場合）８人（５ａ）・・・発信局アドレス（発信局が
５１である場合）１ｎ・・・予約時間（１７時）
Ｔ・・・継続時間（１時間）
ＤＡＴＡ・・・データ
Ｃ・・・チェックピット
Ｆｌ・・・エンドフラッグ
この伝送パレット２０が予約に基いて局５ｂに受信され
、局５ａと５ｂの間で専有的に通信することができる。P... Preamble Fl... Start flag DA (5b)... Destination station address (if the destination station is 5b) 8 people (5a)... Source station address (if the source station is 51) ) 1n...Reservation time (17:00) T...Continuation time (1 hour) DATA...Data C...Check pit Fl...End flag This transmission pallet 20 is sent to station 5b based on the reservation. can be received and communicated exclusively between stations 5a and 5b.
同、予約拡２局間について説明したが、多重局間でも良
いし、あるいは放送通信であっても良い。Although the explanation has been made regarding reservation expansion between two stations, it may also be between multiple stations or may be broadcast communication.
以上説明した通シ、本発明による多局間通信装置によれ
ば、事前に伝送予約できるようにしたため、サーくス性
の向上を図ることができる。As described above, according to the multi-station communication device according to the present invention, transmission reservation can be made in advance, so that serviceability can be improved.
第１図は多局間通信装置を示す説明図。第２図はパケッ
トヲ示す説明図。第３図は本発明の一実施例を示す説明
図。第４図０）は本発明の予約モードを示し、第４図（
ロ）は予約モードにおけるパケットを示す説明図。
符号の説明
１・・・同軸ケーブル、 ２，３・・・ターミネータ
、４１．４ｂ、４ｃ、４ｎ・・・コネクタ、５ ａ ｅ
５ ｂ ｒ ５ ｅ・・・局、 ６・・・タイマー
サーバー、 １０・・・予約パケット、 ２０・・・伝
送パケッ ト ０
第１図
第２図
崎聞FIG. 1 is an explanatory diagram showing a multi-station communication device. FIG. 2 is an explanatory diagram showing a packet. FIG. 3 is an explanatory diagram showing one embodiment of the present invention. FIG. 4(0) shows the reservation mode of the present invention, and FIG.
B) is an explanatory diagram showing packets in reservation mode. Explanation of symbols 1... Coaxial cable, 2, 3... Terminator, 41.4b, 4c, 4n... Connector, 5 a e
5 b r 5 e...station, 6...timer server, 10...reservation packet, 20...transmission packet 0 Figure 1 Figure 2 Sakimon
Claims (1)
パケット形式の信号を送受信する多局間通信組において
、 前記複数のそれぞれの局が、通信開始時間と通信継続時
間管指定されて他の局から伝送予約の要求を受付けたと
き該時間に他の伝送要求がありても予約された伝送に前
記通信ラインの専有権を与えることを特徴とする多局間
通信装置。[Claims] In a multi-station communication group that transmits and receives packet-type signals between a plurality of stations connected to a communication line such as a coaxial cable, each of the plurality of stations has a communication start time and a communication duration time. A multi-station communication device characterized in that when a transmission reservation request is received from another station designated as a transmission line, the reserved transmission is given exclusive rights to the communication line even if there is another transmission request at that time. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11370782A JPS595760A (en) | 1982-06-30 | 1982-06-30 | Multistation communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11370782A JPS595760A (en) | 1982-06-30 | 1982-06-30 | Multistation communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS595760A true JPS595760A (en) | 1984-01-12 |
Family
ID=14619122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11370782A Pending JPS595760A (en) | 1982-06-30 | 1982-06-30 | Multistation communication device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774474A (en) * | 1980-10-27 | 1982-05-10 | Nippon Oils & Fats Co Ltd | Hydration expanding crush cartridge |
-
1982
- 1982-06-30 JP JP11370782A patent/JPS595760A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774474A (en) * | 1980-10-27 | 1982-05-10 | Nippon Oils & Fats Co Ltd | Hydration expanding crush cartridge |
| JPS5953992B2 (en) * | 1980-10-27 | 1984-12-27 | 日本油脂株式会社 | Hydration-swellable crushing cartridge and its usage |
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