JPH08186597A - Transfer delay time preferential transfer method in store and forward switching network - Google Patents
Transfer delay time preferential transfer method in store and forward switching networkInfo
- Publication number
- JPH08186597A JPH08186597A JP17995A JP17995A JPH08186597A JP H08186597 A JPH08186597 A JP H08186597A JP 17995 A JP17995 A JP 17995A JP 17995 A JP17995 A JP 17995A JP H08186597 A JPH08186597 A JP H08186597A
- Authority
- JP
- Japan
- Prior art keywords
- data
- delay time
- subscriber
- transfer
- exchange
- 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
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、複数の交換機を含む蓄
積交換網における転送遅延時間を最短にする方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for minimizing transfer delay time in a store and forward switching network including a plurality of exchanges.
【0002】[0002]
【従来の技術】従来の蓄積交換網では、発着端末機間を
結ぶ網のルートは1つに定められ、このルートのトラヒ
ック状態により遅延時間が変動していた。2. Description of the Related Art In a conventional store-and-forward network, only one route is established between the originating and terminating terminals, and the delay time varies depending on the traffic state of this route.
【0003】[0003]
【発明が解決しようとする課題】上記のような蓄積交換
網でのルーティングでは、遅延時間が網内の状態により
逐次変化し、リアルタイム性を重視する音声通信等に適
用できないという問題があった。本発明の目的は、上記
の課題を解決し、網内のトラヒック変動に依存し難いデ
ータ転送方法を提供することにある。However, the routing in the storage and switching network as described above has a problem that it cannot be applied to voice communication or the like which attaches importance to real-time property, because the delay time changes sequentially depending on the state in the network. An object of the present invention is to solve the above problems and to provide a data transfer method that is less likely to depend on traffic fluctuations in the network.
【0004】[0004]
【課題を解決するための手段】本発明は、上記の課題を
解決するため、識別用の同一シーケンス番号を付けた同
一内容のデータを同時に複数のルートに送出し、着交換
機ではシーケンス番号を基に最も早く届いたデータを有
効として用いる。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention sends data of the same contents with the same sequence number for identification to a plurality of routes at the same time, and the destination exchange uses the sequence number as a basis. Use the data that arrives at the earliest as valid.
【0005】[0005]
【作用】本発明によれば、複数のルートを通して転送さ
れたデータのうちで最も早く着交換機に到着したデータ
を加入者に転送することにより、網内のトラヒック変動
に依存し難いデータ転送が可能となる。According to the present invention, of the data transferred through a plurality of routes, the data that arrives at the destination exchange earliest is transferred to the subscriber, thereby making it possible to transfer data that is less dependent on traffic fluctuations in the network. Becomes
【0006】[0006]
【実施例】図1は発着交換機間に複数のルートが存在す
る交換網を示した説明図である。同図において、10〜13
は端末機、20〜25は交換機、30〜33は加入者と交換機と
を結ぶ加入者回線、40〜46は交換機間を結ぶ中継回線を
それぞれ示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram showing a switching network in which a plurality of routes exist between originating and terminating exchanges. In the figure, 10 to 13
Is a terminal, 20 to 25 are exchanges, 30 to 33 are subscriber lines connecting subscribers to the exchange, and 40 to 46 are relay lines connecting the exchanges.
【0007】発加入者端末機を10、着加入者端末機を11
とすれと、両加入者を結ぶルートは3つあり、中継回線
番号でルートを示すと、40−41−42と、40−46−42と、
40−44−45とである。発交換機20は、加入者10からデー
タを受信すると同じデータを3つ作成し、上記の3つの
ルートにそれぞれ送出する。着交換機23では、多数の到
着データのうち同じシーケンス番号を持つデータの中で
最初に到着したデータのみを加入者11に送出する。これ
により、最短遅延時間の転送データを加入者に渡すこと
ができる。10 calling subscriber terminals and 11 receiving subscriber terminals
There are three routes connecting both subscribers, and when the route is indicated by the trunk line number, 40-41-42, 40-46-42,
40-44-45. When receiving the data from the subscriber 10, the originating exchange 20 creates three same data and sends them to the above three routes respectively. The destination exchange 23 sends to the subscriber 11 only the data which arrives first among the data having the same sequence number among the many arrival data. As a result, the transfer data with the shortest delay time can be passed to the subscriber.
【0008】なお、中継回線はその時点での通信量によ
り使用率が異なるため、経路毎に転送時間が異なる。例
えば中継回線44は加入者10と11との通信の他に加入者12
と13との通信にも使用され、その回線使用率は回線41或
いは46とは異なる。このため、交換機20から23への3つ
のルートの転送所要時間も各々異なる。このため、複数
の経路に同一のシーケンス番号を持ち同一の内容のデー
タを送り、最も早く着交換機に到着したデータをシーケ
ンス毎に選択することで、常に最短遅延通信が可能にな
る。Since the relay line has a different usage rate depending on the amount of communication at that time, the transfer time differs for each route. For example, the trunk line 44 includes the communication between the subscribers 10 and 11 and the subscriber 12
It is also used for communication with lines 13 and 13, and its line utilization rate is different from line 41 or line 46. Therefore, the transfer times of the three routes from the exchanges 20 to 23 are also different. Therefore, by sending data having the same sequence number to a plurality of routes and having the same content and selecting the data that arrives at the destination exchange earliest for each sequence, the shortest delay communication is always possible.
【0009】[0009]
【発明の効果】以上説明したように、発着交換機間の複
数ルートに同一データを転送し最も早く着交換機に到着
したデータを加入者に転送することにより、網内のトラ
ヒック変動に依存し難い遅延時間優先転送が可能になる
など、本発明の方法によれば従来の方法では得られなか
った優れた効果を奏する。As described above, the same data is transferred to a plurality of routes between the originating and terminating exchanges, and the data arriving at the destination exchange is transferred to the subscriber earliest. According to the method of the present invention, time-priority transfer becomes possible, and excellent effects that cannot be obtained by the conventional method are obtained.
【図1】発着交換機間に複数のルートが存在する交換網
を示す説明図である。FIG. 1 is an explanatory diagram showing a switching network in which a plurality of routes exist between originating and terminating exchanges.
10〜13 端末機 20〜25 交換機 30〜33 加入者と交換機を結ぶ加入者回線 40〜46 交換機間を結ぶ中継回線 10-13 Terminals 20-25 Exchanges 30-33 Subscriber lines connecting subscribers and exchanges 40-46 Relay lines connecting exchanges
Claims (1)
機へデータを転送するための複数の物理的に独立な発着
交換機を結ぶルートが存在する蓄積交換網における転送
遅延時間優先転送方法において、 発交換機が着交換機に向けてデータを転送する際、識別
用の同一シーケンス番号を付けた同一内容のデータを同
時に複数のルートに送出し、着交換機ではシーケンス番
号を基に最も早く届いたデータを有効として用いること
を特徴とする蓄積交換網における転送遅延時間優先転送
方法。1. A transfer delay time priority transfer method in a store-and-forward network in which there is a route connecting a plurality of physically independent source and destination exchanges for transferring data from a source exchange to a destination exchange including a plurality of exchanges. When the exchange transfers data to the destination switch, it sends the same data with the same sequence number for identification to multiple routes at the same time, and the destination switch validates the earliest data based on the sequence number. A transfer delay time priority transfer method in a store-and-forward network, which is used as
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17995A JPH08186597A (en) | 1995-01-05 | 1995-01-05 | Transfer delay time preferential transfer method in store and forward switching network |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17995A JPH08186597A (en) | 1995-01-05 | 1995-01-05 | Transfer delay time preferential transfer method in store and forward switching network |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08186597A true JPH08186597A (en) | 1996-07-16 |
Family
ID=11466786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17995A Pending JPH08186597A (en) | 1995-01-05 | 1995-01-05 | Transfer delay time preferential transfer method in store and forward switching network |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08186597A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6879589B2 (en) | 1999-12-22 | 2005-04-12 | Nec Corporation | Data packet transfer network and data packet transfer method |
US7043574B2 (en) | 2002-08-14 | 2006-05-09 | Nec Corporation | Computer system and frame transmitting method |
WO2006090789A1 (en) * | 2005-02-25 | 2006-08-31 | Softbank Bb Corp. | Data communication system and data communication method |
JP2011139303A (en) * | 2009-12-28 | 2011-07-14 | Nec Corp | Communication system, control device, communication control method, and program |
-
1995
- 1995-01-05 JP JP17995A patent/JPH08186597A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6879589B2 (en) | 1999-12-22 | 2005-04-12 | Nec Corporation | Data packet transfer network and data packet transfer method |
US7043574B2 (en) | 2002-08-14 | 2006-05-09 | Nec Corporation | Computer system and frame transmitting method |
WO2006090789A1 (en) * | 2005-02-25 | 2006-08-31 | Softbank Bb Corp. | Data communication system and data communication method |
JP2011139303A (en) * | 2009-12-28 | 2011-07-14 | Nec Corp | Communication system, control device, communication control method, and program |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100586068C (en) | Method for establishing standby connection substituting for communication connection and call processing server | |
US6163535A (en) | Distributed voice processing system | |
JPH11502683A (en) | Digital communication system | |
JPH02274038A (en) | Network service offering method | |
CA2228263C (en) | Improved communication switch | |
US4891802A (en) | Method of and circuit arrangement for controlling a switching network in a switching system | |
US4710916A (en) | Switching apparatus for burst-switching communications system | |
CA1256540A (en) | Methods of establishing and terminating connections in a distributed-control communications system | |
CA2268553A1 (en) | Method and system for transferring digital data calls between different destinations | |
JPH08186597A (en) | Transfer delay time preferential transfer method in store and forward switching network | |
JP3712454B2 (en) | Single-stage telephony switch with split processor | |
JP2594918B2 (en) | Distributed switching system | |
JPH0124389B2 (en) | ||
JP2810297B2 (en) | Exchange system | |
Tsukada et al. | Integrated services data switching network | |
JPH0318798B2 (en) | ||
JPH0227858A (en) | Call transfer control system between exchange stations | |
JP2595504B2 (en) | Time division multiplex time switch control method | |
JPH01125147A (en) | Call setting control system | |
JP2586388B2 (en) | Exchange system | |
JPS60177759A (en) | Route selecting system of packet switching network | |
Corbishley et al. | Telexcommunication | |
JPH03249896A (en) | Representative selecting system for exchange | |
JP2002185553A (en) | Relay system | |
Sharma | Comparative study of networks using packet and circuit switching within a single network |