JPS6052143A - Packet transmission method in packet switching network - Google Patents

Packet transmission method in packet switching network

Info

Publication number
JPS6052143A
JPS6052143A JP58160651A JP16065183A JPS6052143A JP S6052143 A JPS6052143 A JP S6052143A JP 58160651 A JP58160651 A JP 58160651A JP 16065183 A JP16065183 A JP 16065183A JP S6052143 A JPS6052143 A JP S6052143A
Authority
JP
Japan
Prior art keywords
packet
packet switching
switching device
station
relay
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
JP58160651A
Other languages
Japanese (ja)
Other versions
JPH0544214B2 (en
Inventor
Jun Taniguchi
谷口　順
Chikara Matsuda
松田　主税
Makoto Kajiwara
誠 梶原
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP58160651A priority Critical patent/JPS6052143A/en
Publication of JPS6052143A publication Critical patent/JPS6052143A/en
Publication of JPH0544214B2 publication Critical patent/JPH0544214B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To improve the reliability of a system by transmitting periodically a status notice packet of an own station to other relay stations adjacent from each relay station to recognize the failure state of the adjacent relay station thereby attaining properly the selective processing of the relay station. CONSTITUTION:A packet transmission system is provided with the 1st-4th packet switching device 1-4 constituting relay stations, and terminal device 5, 6 are connected to the switching devices 1,3. Further, the switching devices 1,2, 3,4, and 3,4,4,1 and 2,4 are connected by relay lines 7-11. Thus, the switching devices 1-4 and the relay lines 7-11 form a packet switching network 12 and the status notice packet of the own station is transmitted periodically from the switching devices 1-4 to the other switching devices 1-4. Then, the failed state of the adjacent switching devices 1-4 is recognized and the selection processing of the switching devices 1-4 is made proper as each ralay station thereby improving the reliability of system.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はパケット交換網におけるパケット伝送方法、特
にパケット化したデータを伝送するときにおける中継局
の選択方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a packet transmission method in a packet switching network, and particularly to a relay station selection method when transmitting packetized data.

〔従来技術〕[Prior art]

一般に、データをパケット化してパケット交換網内を伝
送するには隣接する中継局のうち最適なものを選択しな
がら目的の着信局まで中継している。Generally, in order to packetize data and transmit it within a packet-switched network, the optimum relay station among adjacent relay stations is selected and the data is relayed to the destination station.

従来、隣接する中継局を選択する方法として、隣接する
中継局か−ら送信される輻輳通知パケットを、パケット
を伝送すべき発信局側で受信することによりその中継局
が輻輳状態か否か及びその中継局向は中継路が正常か否
かを判定し、その中継局が輻輳状態の場合、或いはその
中継局向は中継路が異常と認められる場合、選択範囲か
ら除外するようにしている。Conventionally, as a method for selecting an adjacent relay station, a congestion notification packet transmitted from an adjacent relay station is received by the transmitting station that should transmit the packet, and it is possible to determine whether the relay station is in a congested state or not. It is determined whether the relay path for the relay station is normal or not, and if the relay station is in a congested state or the relay path for the relay station is recognized as abnormal, it is excluded from the selection range.

しかしながら、このような方法によれば隣接する中継局
が障害状態になったのか否かの判別を行うことができな
かった。このため隣接する中継局が障害状態になった場
合には、中継路が異常となったものとして、その障害状
態を認識しているのが現状である。しかしながら、隣接
する中継局の障害状態によっては、中継路の伝送制御は
正常に動作し、それ以外のパケット中継処理において障
害が発生した場合には、発信局側からは正常に動作して
いるように見え、障害状態の中継局であるにもかかわら
ず、その中継局に対してパケットを中継伝送してしまう
。また、発信局と隣接する中継局との間の中継路が異常
である場合には、この隣接の中継局自体は正常であって
も障害とみなし、この中継局へのパケットの伝送を全く
断念してしまい、このことによってパケットの着信局へ
の伝送が不能となる等の欠点があった。However, according to such a method, it is not possible to determine whether or not an adjacent relay station is in a failure state. For this reason, when an adjacent relay station becomes in a faulty state, the current situation is that the faulty state is recognized as an abnormality in the relay path. However, depending on the failure status of the adjacent relay station, the transmission control of the relay route may operate normally, and if a failure occurs in other packet relay processing, it may appear that the transmitting station is operating normally. Even though the relay station is in a failed state, packets are relayed to the relay station. Additionally, if there is an abnormality in the relay path between a transmitting station and an adjacent relay station, it will be treated as a failure even if the adjacent relay station itself is normal, and the transmission of packets to this relay station will be completely abandoned. This has disadvantages such as making it impossible to transmit the packet to the destination station.

〔発明の概要〕[Summary of the invention]

本発明の目的は上記欠点を除去するためになされたもの
で、各中継局から隣接する他の中継局に対し自局の状態
通知パケットを周期的に送信し、これにより隣接する中
継局の障害状態を認識して中継局の選択処理を適切に行
うことにより信頼性の高いパケット交換網におけるパケ
ット伝送方法を提供するものである。SUMMARY OF THE INVENTION An object of the present invention has been made to eliminate the above-mentioned drawbacks, and the purpose of the present invention is to periodically transmit a status notification packet from each relay station to other adjacent relay stations, thereby preventing failures of adjacent relay stations. The present invention provides a highly reliable packet transmission method in a packet switching network by recognizing the state and appropriately performing relay station selection processing.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明によるパケット交換網におけるパケット伝
送方法の一実施例につき説明する。An embodiment of a packet transmission method in a packet switching network according to the present invention will be described below.

図面は本発明によるパケット交換網におけるパンケト伝
送方法の一実施例を示す簡略構成図であり、同図におい
て（１）〜（４）は中継局を構成する第１ないし第４パ
ケツト交換装置であり、第１パケツト交換装置（１）と
、第３ノｆケ・ノド交換装置（３）に端末（５）、（６
）が接続される。The drawing is a simplified configuration diagram showing an embodiment of the packet transmission method in a packet switching network according to the present invention, and in the drawing, (1) to (4) are first to fourth packet switching devices constituting a relay station. , terminals (5) and (6) are connected to the first packet switching device (1) and the third packet switching device (3).
) are connected.

第２バツケト交換装置（２）は中継路（７）を介して第
１パケツト交換装置（１）に接続され、第３パケツト交
換装置（３）は中継路（８）を介して第２パケツト交換
装置（２）に接続される。第４パケツト交換装置（４）
は中継路（９）を介して第１パケツト交換装置（１）に
接続され、また中継路（１０）を介して第２バケ・ノド
交換装置（２）に接続され、さらに中継路（１１）を介
して第３パケツト交換装置（３）に接続される。このよ
うなパケット交換装置（１）〜（４）及び中継路（７）
〜（１１）等によりパケット交換網（１２）が形成され
る。この場合、このような構成のパケット交換網（１２
）において、第１ノ寸ケット交換装置（１）は第２バケ
・ノド交換装Ｗ（２）と、第４パケツト交換装置（４）
に対して、第２パケツト交換装置（２）は第１ノ寸ケ・
ノド交換装置（１）と、第３パケツト交換装置（３）と
、第４パケｉト交換装置（４）に対して、第３ノくケ・
ノド交換装置（３）は第２バケ・ノド交換装置（２）と
、第４パケツト交換装置（４）に対して、第４ノ寸ケッ
ト交換装置（４）は第１バケ・ノド交換装置（１）と、
第２パケツト交換装置（２）と、第３ノくケ・ノド交換
装置（３）に対してそれぞれ一定周期で自局の状態をセ
ントした状態通知パケ・ノドを送信する。この状態通知
パケットの内容は少なくとも発信局（当該状態通知パケ
・ノドを発信する局）のその時点での装置の障害状態を
意味する。なお、この状態通知パケットの内容として輻
輳状態その他、その網の特性に応じた各種制御情報を設
定することもできる。The second packet switching device (2) is connected to the first packet switching device (1) via a relay path (7), and the third packet switching device (3) is connected to the second packet switching device (1) via a relay path (8). Connected to device (2). Fourth packet switching device (4)
is connected to the first packet switching device (1) via the relay path (9), is connected to the second bucket/node switching device (2) via the relay path (10), and is further connected to the relay path (11). It is connected to the third packet switching device (3) via. Such packet switching devices (1) to (4) and relay path (7)
A packet switching network (12) is formed by (11) and the like. In this case, a packet switching network (12
), the first bucket exchanger (1) is connected to the second bucket/throat exchanger W (2) and the fourth packet exchanger (4).
On the other hand, the second packet switching device (2)
The third packet switching device (1), the third packet switching device (3), and the fourth packet switching device (4)
The gutter exchange device (3) is the second bucket/throat exchange device (2) and the fourth packet exchange device (4), whereas the fourth bucket exchange device (4) is the first bucket/throat exchange device (4). 1) and
Each of the second packet switching device (2) and the third packet switching device (3) transmits a status notification packet containing the status of its own station at regular intervals. The content of this status notification packet means at least the failure status of the device at the time of the originating station (the station that transmits the status notification packet/node). Note that the content of this status notification packet may include the congestion status and other various control information depending on the characteristics of the network.

隣接する各受信局（当該状態通知）々ケ・ノドを受信す
る局）では、この状態通知ノくケ・ノドの内容を判定し
、あるいは状態通知バケ・ノドを周期的Ｇこ受信するこ
とができるか否かにより、具体的に番ま受信がとだえる
か否かにより、該７ｉケ・ノドの発ｆ言局の障害状態あ
るいは輻輳状態等を認識する。Each adjacent receiving station (the station that receives the status notification) determines the content of the status notification or periodically receives the status notification. Depending on whether or not it is possible to do so, specifically whether or not the reception of calls stops, the failure state or congestion state of the transmitting station of the 7i node can be recognized.

ここで、第１パケツト交換装置（１）に接続された端末
（５）から第３パケツト交換装置（３）に接続された端
末（６）へパケット化されたデータを伝送する場合を考
える。端末（５）がらの上記データは第１パケツト交換
装置（１）においてパケット化され、着信局としての第
３パケツト交換装置（３）に向けて送信されるが、この
ためにまず、第１パケツト交換装置（１）は次の中継局
として、第２パケツト交換装置（２）、及び第４パケン
ト交換装置（４）からのそれぞれの状！３ｉｉ１１知パ
ケットの受信により認識している情報、及び中継路（７
）、中継路（９）の状態に基づいて、第２パケツト交換
装置（２）、または第４パケツト交換装置（４）のいず
れかを選択する。例えば第４パケツト交換装置（４）か
らの状態通知パケットの内容が障害状態となり、あるい
は第４パケツト交換装置（４）からの状態通知パケット
受信がとだえていることにより、第４パケツト交換装置
（４）が障害状態であると認識される場合には、中継路
（９）が正常に動作していても第４パケツト交換装置（
４）を選択しない。なお、中継路（７）、（９）が正常
か否かは、パケット交換装置（１）と（２）、（１）と
（４）間で送受信が行えるか否かを判定することにより
容易に判断できる。上記の場合、第１パケツト交換装置
（１）は第２パケツト交換装置（２）を中継局として選
択し、パケットを伝送する。Now, consider a case where packetized data is transmitted from a terminal (5) connected to a first packet switching device (1) to a terminal (6) connected to a third packet switching device (3). The above data from the terminal (5) is packetized in the first packet switching device (1) and transmitted to the third packet switching device (3) as the receiving station. The switching device (1) serves as the next relay station and receives the respective states from the second packet switching device (2) and the fourth packet switching device (4). 3ii11 The information recognized by receiving the knowledge packet and the relay route (7
), either the second packet switching device (2) or the fourth packet switching device (4) is selected based on the state of the relay path (9). For example, the contents of the status notification packet from the fourth packet switching device (4) may be in a failure state, or the reception of status notification packets from the fourth packet switching device (4) may be interrupted. ) is recognized as being in a faulty state, even if the relay path (9) is operating normally, the fourth packet switching device (
4) Do not select. Note that whether or not the relay paths (7) and (9) are normal can be easily determined by determining whether transmission and reception can be performed between the packet switching devices (1) and (2), and (1) and (4). can be judged. In the above case, the first packet switching device (1) selects the second packet switching device (2) as a relay station and transmits the packet.

次に、第２パケツト交換装置（２）は第１パケツト交換
装置（１）から伝送されたパケットを第３パケツト交換
装置（３）へ中継するために第３パケツト交換装置（３
）からの状態通知パケットに基づき第３パケツト交換装
置（３）の状態を判定し、また中継路（８）の状態を判
定する。第３パケツト交換装置（３）が障害状態である
と判定した場合には、中継路（８）の動作が正常であっ
ても第３パケツト交換装置（３）向けのパケットは廃棄
する。従って、従来のように隣接する中継局が障害状態
であるにもかかわらず、その中継局にパケットを伝送し
てしまうという無駄をなくすことができる。中継路（８
）の状態が異常の場合は、第３パケツト交換装置（３）
自体が正常であれば、第３パケツト交換装置（３）から
の状態通知パケットを第４パケツト交換装置（４）へ迂
回させて第２パケツト交換装置（２）へ送信し、第２パ
ケツト交換装置（２）はこれを受信することにより、第
３パケツト交換装置（３）が正常であると判定し、第３
パケツト交換装置（３）向はパケットを中継路（１０）
から第４パケツト交換装置（４）へ迂回させ、中継路（
１１）を介して伝送する。このように、中継路（８）が
異常でも、従来のようにパケットの伝送を全く断念する
ことなく、第３パケツト交換装置（３）に対して他の中
継局を迂回してパケットを伝送するので、パケットの着
信局への伝送が可能となり、信頼性を向上できる。Next, the second packet switching device (2) transfers the packet transmitted from the first packet switching device (1) to the third packet switching device (3).
) The state of the third packet switching device (3) is determined based on the state notification packet from the third packet switching device (3), and the state of the relay path (8) is also determined. If it is determined that the third packet switching device (3) is in a failure state, packets destined for the third packet switching device (3) are discarded even if the operation of the relay path (8) is normal. Therefore, it is possible to eliminate the waste of transmitting a packet to an adjacent relay station even though the adjacent relay station is in a failure state as in the conventional case. Relay route (8
) is abnormal, the third packet switching device (3)
If the packet switching device itself is normal, the status notification packet from the third packet switching device (3) is detoured to the fourth packet switching device (4) and sent to the second packet switching device (2), and the second packet switching device (2) receives this, determines that the third packet switching device (3) is normal, and
Packet switching equipment (3) sends packets to relay path (10)
to the fourth packet switching device (4), and the relay path (
11). In this way, even if the relay path (8) is abnormal, the packets can be transmitted to the third packet switching device (3) by bypassing other relay stations, without completely giving up on packet transmission as in the conventional case. Therefore, the packet can be transmitted to the destination station, and reliability can be improved.

なお、以上の説明では、状態通知パケットの受信、及び
その中断により隣接の中継局が障害であるかどうかだけ
を判定し対応処理を行う場合を説明したが、状態通知パ
ケットへの設定情報として、輻輳状態を設定した場合に
は、隣接の中継局に対する輻輳処理を同時に行え、別途
輻輳通知パケットを必要としなくなる。また、パケット
交ｔｉ網の特性に応じた各種の制御情報を設定し、より
詳細な適応処理を行うこともできる。In addition, in the above explanation, a case has been described in which a response process is performed by only determining whether or not an adjacent relay station is in trouble due to the reception of a status notification packet and its interruption.However, as setting information in the status notification packet, When a congestion state is set, congestion processing for adjacent relay stations can be performed simultaneously, eliminating the need for a separate congestion notification packet. Furthermore, it is also possible to set various types of control information according to the characteristics of the packet exchange network and perform more detailed adaptive processing.

〔発明の効果〕〔Effect of the invention〕

以上述べたように、本発明によれば、パケットを送出す
べき中継路が正常であってもその中継路に接続されたパ
ケット交換装置が障害状態であれば、そのパケット交換
装置へのパケットの伝送を廃棄したので、交換装置の無
駄な動作を省くことができる。また、中継路が異常であ
っても次のバケット交換装置が正常であれば、他パケッ
ト交換装置を介して当該パケット交換装置にパケットを
伝送するようにしたので、パケット交換網におけるパケ
ットの伝送上の信頼性を向上させることができる。As described above, according to the present invention, even if the relay path to which packets should be sent is normal, if the packet switching device connected to that relay path is in a faulty state, the packets will not be sent to the packet switching device. Since the transmission is discarded, unnecessary operations of the switching device can be omitted. In addition, even if the relay path is abnormal, if the next bucket switching device is normal, the packet is transmitted to that packet switching device via another packet switching device, so the transmission of packets in the packet switching network is reliability can be improved.

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

図面は本発明によるパケット交換網におけるパケット伝
送方法の一実施例を示す図である。 （１）〜（４）・・・第１ないし第４パケツト交換装置
、（５）、（６）　・・・端末、（７）〜（１１）・・
・中継路。 代理人　大　岩　増　１＆（ばか２名）手続補正書（自
発） ２１発明の名称 パケット交換網におりるパケット伝送方法３、補正をす
る者 事件との関係　特許出願人 住　所　東京都千代田区丸の内二丁目２番３号名　称　
（６０１）三菱電機株式会社 代表者片山仁八部 ４、代理人 住　所　東京都千代田区丸の内二丁１」２番３号三菱電
機株式会社内 ５、補正の対象 特許請求の範囲、発明の詳細な説明の欄。 ６、補正の内容 （１）特許請求の範囲を別紙の通り補正する。 （２）明細書第３頁第３行目、第５行目、第７行目、第
６頁第１１行目、第１９行目、第９頁第１９行目、第２
０行目の「湊」を「較」と補正する。 以上 特許請求の範囲 （１）隣接するパケット交換装置のいずれかを選択し、
この選択したものにパケットを中継伝送するバケット交
換装置を含むパケット交換網において各バケット交換装
置置から、隣接する他のバケット交換装置に対して自局
の障害状態を少なくとも設定した状態通知パケットを周
期的に伝送し、各バケット交換装置ではこの状態通知パ
ケットの内容または周期性にもとづき隣接するバケット
交換装置を選択するか否かを判定するようにしたごとを
特徴とするパケット交換網におけるパケット伝送方法。 （２）状態通知パケットの内容または周期性にもとづき
隣接するバケット交換装置が障害であると判断されとき
は、当該パケット交換装置麻■局とするパケッＩ・の伝
送ば嵐１山ユ］１り光年９交したことを特徴とする特許
請求の範囲第１項記載のパケット交換網におけるパケッ
ト伝送方法。 （３）状態通知パケットの内容または周期性にもとづき
隣接するバケット交換装置が正常と判断され、かつ当該
パケット交換装置に向かう中継路が異常と判断されると
きには、当該バケ・ノド交換装置に他のバケット交換装
置を迂回させて当該）ｉヶ・ノド交換装置を１−着信局
とするパケ・ノドを伝送したことを特徴とする特許請求
の範囲第１項記載の）＜ケソト交換網におけるバケ・ノ
ド伝送方法。 （４）状態通知パケットとして、自局の輻歓状態を設定
したことを特徴とする特許請求の範囲第１項記載のバケ
ッ１−交換紺におりるバケット伝送方法。The drawing is a diagram showing an embodiment of a packet transmission method in a packet switching network according to the present invention. (1) to (4)...first to fourth packet switching devices, (5), (6)...terminals, (7) to (11)...
・Relay route. Agent: Masu Oiwa 1 & (2 idiots) Procedural amendment (spontaneous) 21 Name of invention Packet transmission method over packet switching network 3, Relationship to the person making the amendment Case Patent applicant address Marunouchi, Chiyoda-ku, Tokyo 2-2-3 Name
(601) Mitsubishi Electric Corporation Representative Hitoshi Katayama 4, Agent address 2-1 Marunouchi 2-1, Chiyoda-ku, Tokyo, 2-3 Mitsubishi Electric Corporation 5 Scope of patent claims to be amended, details of the invention An explanation column. 6. Contents of amendment (1) The scope of claims will be amended as shown in the attached sheet. (2) Page 3, line 3, line 5, line 7 of the specification; page 6, line 11, line 19; page 9, line 19, line 2.
Correct "Minato" in the 0th line to "Kai". Claims (1) Selecting any of the adjacent packet switching devices;
In the packet switching network including the bucket switching equipment that relays packets to the selected one, each bucket switching equipment periodically sends status notification packets that set at least the fault status of its own station to other adjacent bucket switching equipment. A packet transmission method in a packet switching network, characterized in that each bucket switching device determines whether to select an adjacent bucket switching device based on the content or periodicity of the status notification packet. . (2) If it is determined that an adjacent bucket switching device is in trouble based on the content or periodicity of the status notification packet, the transmission of the packet I to the corresponding packet switching device will be terminated. A packet transmission method in a packet switching network according to claim 1, characterized in that the distance is 9 light years. (3) When the adjacent bucket switching device is determined to be normal based on the content or periodicity of the status notification packet, and the relay route to the packet switching device is determined to be abnormal, the bucket/node switching device is connected to another bucket switching device. The bucket switching device in the (recited in claim 1) is transmitted by bypassing the bucket switching device and having the i-node switching device as the 1-terminating station. Nod transmission method. (4) The bucket transmission method according to claim 1, wherein the congestion state of the own station is set as the state notification packet.

Claims (1)

【特許請求の範囲】 （１１隣接するパケット交換装置のいずれかを選択し、
この選択したものにパケットを中継伝送するパケット交
換装置を含むパケット交換網において、各パケット交換
装置から、隣接する他のパケット交換装置に対して自局
の障害状態を少なくとも設定した状態通知パケットを周
期的に伝送し、各パケット交換装置ではこの状態通知パ
ケットの内容または周期性にもとづき隣接するパケット
交換装置を選択するか否かを判定するようにしたことを
特徴とするパケット交換網におけるパケット伝送方法。 （２）状態通知パケットの内容または周期性にもとづき
隣接するパケット交換装置が障害である生判断されると
きは、当該パケット交換装置へのパケットの伝送を廃棄
したことを特徴とする特許請求の範囲第１項記載のパケ
７）交換網におけるパケット伝送方法。 （３）状態通知パケットの内容または周期性にもとづき
隣接するパケット交換装置が正常と判断され、かつ当該
パケット交換装置に向かう中継路が異常と判断されると
きには、当該パケット交換装置に他のパケット交換装置
を迂回させてパケットを伝送したことを特徴とする特許
請求の範囲第１項記載のパケット交換網におけるパケッ
ト伝送方法。 （４）状態通知パケットとして、自局の輻輳状態を設定
したことを特徴とする特許請求の範囲第１項記載のパケ
ット交換網におけるパケット伝送方法。[Claims] (11 Select any one of the adjacent packet switching devices,
In a packet switching network including a packet switching device that relays packets to this selected device, each packet switching device periodically sends a status notification packet that at least sets the fault status of its own station to other adjacent packet switching devices. A method for transmitting packets in a packet switching network, characterized in that each packet switching device determines whether to select an adjacent packet switching device based on the content or periodicity of the status notification packet. . (2) A claim characterized in that when it is determined that an adjacent packet switching device is at fault based on the content or periodicity of the status notification packet, the transmission of packets to the packet switching device is discarded. Packet 7) Packet transmission method in a switched network as described in Section 1. (3) If the adjacent packet switching device is determined to be normal based on the content or periodicity of the status notification packet, and the relay route toward the packet switching device is determined to be abnormal, the packet switching device is 2. The method for transmitting packets in a packet switching network according to claim 1, wherein the packets are transmitted by detouring the device. (4) A packet transmission method in a packet switching network according to claim 1, characterized in that the congestion state of the local station is set as the state notification packet.
JP58160651A 1983-09-01 1983-09-01 Packet transmission method in packet switching network Granted JPS6052143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58160651A JPS6052143A (en) 1983-09-01 1983-09-01 Packet transmission method in packet switching network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58160651A JPS6052143A (en) 1983-09-01 1983-09-01 Packet transmission method in packet switching network

Publications (2)

Publication Number Publication Date
JPS6052143A true JPS6052143A (en) 1985-03-25
JPH0544214B2 JPH0544214B2 (en) 1993-07-05

Family

ID=15719537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58160651A Granted JPS6052143A (en) 1983-09-01 1983-09-01 Packet transmission method in packet switching network

Country Status (1)

Country Link
JP (1) JPS6052143A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6285533A (en) * 1985-10-11 1987-04-20 Nec Corp Decentralized packet exchange system
JPS6285532A (en) * 1985-10-11 1987-04-20 Nec Corp Packet exchange system
WO2001041373A1 (en) * 1999-12-02 2001-06-07 Fujitsu Limited Routing device and routing method for routing network
JP2005064723A (en) * 2003-08-08 2005-03-10 Sony Corp COMMUNICATION SYSTEM, COMMUNICATION TERMINAL DEVICE, COMMUNICATION METHOD, AND PROGRAM
US8005054B2 (en) 2003-08-08 2011-08-23 Sony Corporation Communication system, communication method, communication terminal device, control method thereof, and program

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6285533A (en) * 1985-10-11 1987-04-20 Nec Corp Decentralized packet exchange system
JPS6285532A (en) * 1985-10-11 1987-04-20 Nec Corp Packet exchange system
WO2001041373A1 (en) * 1999-12-02 2001-06-07 Fujitsu Limited Routing device and routing method for routing network
JP2005064723A (en) * 2003-08-08 2005-03-10 Sony Corp COMMUNICATION SYSTEM, COMMUNICATION TERMINAL DEVICE, COMMUNICATION METHOD, AND PROGRAM
US8005054B2 (en) 2003-08-08 2011-08-23 Sony Corporation Communication system, communication method, communication terminal device, control method thereof, and program
US8755294B2 (en) 2003-08-08 2014-06-17 Sony Corporation Communication system, communication method, communication terminal device, control method thereof, and program

Also Published As

Publication number Publication date
JPH0544214B2 (en) 1993-07-05

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