JPH06261101A - Signal control method - Google Patents

Signal control method

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Publication number
JPH06261101A
JPH06261101A JP5072940A JP7294093A JPH06261101A JP H06261101 A JPH06261101 A JP H06261101A JP 5072940 A JP5072940 A JP 5072940A JP 7294093 A JP7294093 A JP 7294093A JP H06261101 A JPH06261101 A JP H06261101A
Authority
JP
Japan
Prior art keywords
link connection
layer
collision
request
signal
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
JP5072940A
Other languages
Japanese (ja)
Other versions
JP3144606B2 (en
Inventor
Norio Sawada
周男 澤田
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP07294093A priority Critical patent/JP3144606B2/en
Publication of JPH06261101A publication Critical patent/JPH06261101A/en
Application granted granted Critical
Publication of JP3144606B2 publication Critical patent/JP3144606B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To provide a signal control method which can reduce the processing load due to the collision or the passing each other of signals caused on or between layers in a communication procedure set between the communication systems having the hierarchical communication functions and then establishes quickly a data transferable state. CONSTITUTION:A signal control method can reduce the processing load due to the collision or the passing each other of signals caused on or between layers in a communication procedure set between the communication systems having the hierarchical communication functions. If a collision is caused between the link connection setting request given from a higher-order layer and the link connection incoming notifying signal given from a lower-rank layer, a system call is issued to the lower-order layer for an RR transmission request from the layer where the collision occurred. If the signals pass each other due to the preceding link connection setting request and the notification of such events like the link connection incoming, etc., the higher-order layer of a request issueing source completes normally the link connection setting request processing with the event.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は通信機能が階層化された
通信システム構成の各レイヤ・各レイヤ間で発生する信
号の衝突・信号のすれ違いの際の信号制御方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layer of a communication system having hierarchized communication functions, a signal control method at the time of collision of signals generated between the layers, and signal passing.

【0002】[0002]

【従来の技術】図3に従来の通信機能が階層化された通
信システム構成例を示す。
2. Description of the Related Art FIG. 3 shows a configuration example of a communication system in which conventional communication functions are layered.

【0003】図3の主要な概念は、通信機能の階層化で
ある。
The main concept of FIG. 3 is the layering of communication functions.

【0004】コネクタの形状、信号のレベルから誤り制
御、データ形式等の機能をいくつかのレベルに分割整理
し、階層化することによってノード間の資源の統一的な
管理やサービス間の連携などが実現される。
By dividing and organizing functions such as connector shape and signal level, error control, and data format into several levels and layering them, unified management of resources between nodes and cooperation between services can be achieved. Will be realized.

【0005】通信機能が階層化された通信システム構成
での全二重型通信では、各レイヤ・各レイヤ間で信号の
衝突・信号のすれ違いが発生する。
In full-duplex communication in a communication system configuration in which communication functions are hierarchized, signal collision and signal passing occur between layers.

【0006】問題点の一例を、CCITT勧告のX.2
5通信制御装置の例でレイヤ2を中心に説明する。
An example of the problem is described in CCITT Recommendation X. Two
5 will be described focusing on layer 2 in the example of the communication control device.

【0007】.シーケンス上から見る問題点[0007]. Problems seen from above the sequence

【0008】図4に信号の衝突・信号のすれ違いシーケ
ンスを示す。
FIG. 4 shows a signal collision / signal passing sequence.

【0009】図4で、SABM(Set Asynchronous Bal
anced Mode)は非同期平衡モード設定コマンドでリンク
設定を起動、UA(Unnumbered Acknowledge)は非番号
制確認レスポンスでSABM、DMに対する応答、RR
(Receive Ready )は受信可コマンド/レスポンスでフ
レーム受信可能状態を示す(非輻輳)、LCW(LinkCo
mmand Word)=CCW(Channel Command Word)はリン
クコマンド語(チャネルコマンド語)で、入出力装置に
対して入出力動作の具体的な指示を行う命令語、LSW
(Link Status Word)=CSW(Channel Status Word
)はリンク状態語(チャネル状態語)で、LSW、C
SWは入出力動作の状態通知を行う状態語である。
In FIG. 4, SABM (Set Asynchronous Bal)
anced Mode) activates the link setting with the asynchronous balanced mode setting command, UA (Unnumbered Acknowledge) is an unnumbered acknowledgment response to SABM, DM, RR
(Receive Ready) indicates the state in which the frame can be received with the receive ready command / response (non-congestion), LCW (LinkCo
mmand Word) = CCW (Channel Command Word) is a link command word (channel command word), which is an instruction word for giving a specific instruction of the input / output operation to the input / output device, LSW
(Link Status Word) = CSW (Channel Status Word)
) Is a link state word (channel state word), LSW, C
SW is a status word for notifying the status of the input / output operation.

【0010】通信相手モジュールとの間でリンクコネク
ションを確立する場合、自モジュールの上位レイヤから
発行されたリンクコネクション設定要求〔図4.&2〕
と通信相手モジュールから非同期に通知されたリンクコ
ネクション着信通知〔図4.&1〕の衝突〔図4.*
2〕・すれ違い〔図4.&2、&3〕により、自モジュ
ールの上位レイヤから発行されたリンクコネクション設
定要求がエラー終了〔図4.&5〕として要求発行元の
上位レイヤまで返却される〔図4.&6〕。
When establishing a link connection with the communication partner module, a link connection setting request issued from the upper layer of the own module [Fig. & 2]
And the link connection arrival notification asynchronously notified from the communication partner module [Fig. & 1] collision [Fig. *
2] ・ Passing each other [Fig. 4. & 2, & 3], the link connection setting request issued from the upper layer of the own module ends with an error [Fig. & 5] is returned to the upper layer of the request issuing source [Fig. && 6].

【0011】その後RRの発行要求が再び上位レイヤか
ら発行されている〔図4.&6、&7〕。
After that, the RR issue request is issued again from the upper layer [FIG. & 6, & 7].

【0012】.状態遷移図から見る問題点[0012]. Problems seen from the state transition diagram

【0013】自モジュールの通信システム構成のレイヤ
2の状態遷移図の一部を図5に示す。
FIG. 5 shows a part of the state transition diagram of Layer 2 of the communication system configuration of the own module.

【0014】初期設定終了後のアイドル状態〔図5.*
1〕へ下位レイヤからの非同期のリンクコネクション着
信通知〔図5.&1〕があると着信接続中状態〔図5.
*2〕へ遷移する為、上位レイヤからのリンクコネクシ
ョン設定要求〔図5.&2〕は状態不一致のエラー終了
として要求発行元に返却される。
Idle state after completion of initialization [FIG. *
1] to asynchronous notification of an incoming link connection from the lower layer [Fig. & 1], the incoming call is being connected [Fig.
* 2], the link connection setting request from the upper layer [Fig. & 2] is returned to the request issuing source as an error end due to state mismatch.

【0015】その後上位レイヤはリンクコネクション着
信応答〔図5.&7〕を発行しデータ転送可能状態〔図
5.*3〕へ遷移する。
Thereafter, the upper layer receives a link connection incoming response [Fig. & 7] is issued to enable data transfer [Fig. * 3].

【0016】[0016]

【発明が解決しようとする課題】従来、この種の通信機
能が階層化された通信システム構成においては、上述し
たようなシーケンス上から見る問題、また状態遷移図に
見られる問題がある。
Conventionally, in a communication system configuration in which communication functions of this kind are hierarchized, there are problems seen from the above sequence and problems seen in the state transition diagram.

【0017】本発明の目的は、従来の問題点を解決し、
信号の衝突・信号のすれ違いが発生した場合に生ずる処
理負荷を軽減し、かつ迅速にデータ転送可能状態を確立
する為の信号制御方法を提供することにある。
The object of the present invention is to solve the problems of the prior art,
It is an object of the present invention to provide a signal control method for reducing a processing load caused when a signal collision or a signal passing occurs and quickly establishing a data transfer enable state.

【0018】[0018]

【課題を解決するための手段】本発明は上記目的を達成
するため、通信機能が階層化された通信システム間の通
信手順でレイヤやレイヤ間で発生する信号の衝突・信号
のすれ違いに対する信号制御方法において、上位レイヤ
からのリンクコネクション設定要求と下位レイヤからの
リンクコネクション着信通知信号の衝突が発生した場
合、下位レイヤにRR送信要求のシステムコールを衝突
の発生した当該レイヤから発行し、上位レイヤからのリ
ンクコネクション設定要求と当該レイヤからのイベント
通知で信号のすれ違いが発生した場合、該上位レイヤが
該イベントをもって、該リンクコネクション設定要求処
理を要求発行元の該上位レイヤで正常終了させることを
特徴とする。
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides signal control for collision of signals and signal passing occurring between layers in a communication procedure between communication systems having hierarchical communication functions. In the method, when a collision occurs between a link connection setting request from an upper layer and a link connection incoming notification signal from a lower layer, a system call for an RR transmission request is issued to the lower layer from the layer in which the collision has occurred, and the upper layer When a signal has passed between the link connection setting request from the server and the event notification from the layer, the upper layer should end the link connection setting request process normally in the upper layer of the request issuing source with the event. Characterize.

【0019】[0019]

【作用】上位レイヤからのリンクコネクション設定要求
と下位レイヤからのリンクコネクション着信通知信号の
衝突が発生した場合、下位レイヤにRR送信要求のシス
テムコールを衝突の発生した当該レイヤから発行する。
When the link connection setting request from the upper layer and the link connection incoming notification signal from the lower layer collide with each other, the system call of the RR transmission request is issued to the lower layer from the layer in which the collision occurs.

【0020】上位レイヤからのリンクコネクション設定
要求と、当該レイヤからのイベント(リンクコネクショ
ン着信)の通知で信号のすれ違いが発生した場合、上位
レイヤがそのイベント(リンクコネクション着信通知相
当)をもって、その要求処理を要求発行元の上位レイヤ
で正常終了させる。
When a signal has passed due to a link connection setting request from the upper layer and an event (link connection incoming) notification from the layer, the upper layer receives the event (corresponding to a link connection incoming notification) and requests it. The process ends normally in the upper layer of the request issuer.

【0021】この2点の改善により、信号の衝突・信号
のすれ違いが発生した場合の対応処理を大幅に削減可能
となる。
By improving these two points, it is possible to greatly reduce the processing for handling the case where a signal collision or a signal passing occurs.

【0022】特に複数のリンクコネクションが設定可能
なレイヤに対して有効であり、かつ迅速にデータ転送可
能状態を確立できる。
Particularly, it is effective for a layer in which a plurality of link connections can be set, and a data transferable state can be established quickly.

【0023】[0023]

【実施例】以下、図面を参照して本発明の一実施例を、
一例としてCCITT勧告のX.25通信制御装置のレ
イヤ2を中心に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.
As an example, CCITT recommended X. 25. The layer 2 of the communication control device will be mainly described.

【0024】.シーケンス図で見る対策例[0024]. Example of countermeasures seen in sequence diagram

【0025】図1に本発明を適用した信号の衝突・信号
のすれ違いシーケンスを示す。
FIG. 1 shows a signal collision / signal passing sequence to which the present invention is applied.

【0026】上位レイヤからのリンクコネクション設定
要求〔図1.&2〕が下位レイヤからのリンクコネクシ
ョン着信通知〔図1.&1〕の受信による状態遷移後
〔図1.*2〕の到着と判明した時、その延長上でRR
発行要求(データ受信開始)のシステムコールを衝突の
発生した当該レイヤから発生する〔図1.P1→P
2〕。
Link connection setting request from the upper layer [Fig. 1. & 2] is a link connection notification from the lower layer [Fig. 1. & 1] after state transition [Fig. 1. * 2] When it is found that the arrival of RR
An issue request (data reception start) system call is generated from the layer in which the collision occurred [Fig. 1. P1 → P
2].

【0027】上位レイヤからのリンクコネクション設定
要求〔図1.&2〕と、当該レイヤからのイベント(リ
ンクコネクション着信)の通知〔図1.&3〕で信号の
すれ違いが発生した場合、上位レイヤがそのイベント
(リンクコネクション着信通知相当)をもって、その要
求処理を要求発行元の上位レイヤで正常終了させる〔図
1.&4〕。
Link connection setting request from the upper layer [Fig. 1. & 2] and notification of an event (link connection incoming) from the layer [Fig. 1. & 3], the upper layer has the event (corresponding to the notification of the arrival of a link connection) and the request processing is normally terminated in the upper layer of the request issuing source when the signal passes (Fig. 1. && 4].

【0028】この2点の改善により従来の処理シーケン
ス〔図4.&5、&6、&7〕を省略可能となる。
With these two improvements, the conventional processing sequence [Fig. & 5, & 6, & 7] can be omitted.

【0029】.状態遷移図で見る対策例.. Example of countermeasures seen in the state transition diagram

【0030】図2に本発明を適用した状態遷移図の一部
を示す。
FIG. 2 shows a part of a state transition diagram to which the present invention is applied.

【0031】着信接続中状態〔図2.*2〕へ遷移後、
データ転送可能状態〔図2.*3〕への遷移は従来のリ
ンクコネクション着信応答〔図2.&7〕、または上位
レイヤからのリンクコネクション設定要求の受信〔図
2.&7〕で行う。
Incoming connection state [Fig. 2. After transitioning to * 2],
Data transfer ready state [Fig. 2. The transition to * 3] is the conventional link connection incoming response [Fig. 2. & 7], or reception of a link connection setting request from the upper layer [Fig. 2. & 7].

【0032】[0032]

【発明の効果】以上述べたように本発明は、信号の衝突
・信号のすれ違いが発生した場合の従来の通信システム
に比べ、1)上位レイヤの処理負荷を軽減できること
(複数のリンクコネクションを設定可能なレイヤに特に
有効)、2)迅速にデータ転送可能状態を確立できるこ
とによって、通信システムの即時性の高いリアルタイム
処理が実現できる。
As described above, according to the present invention, as compared with the conventional communication system in the case of signal collision and signal passing, 1) the processing load of the upper layer can be reduced (a plurality of link connections are set). (Especially effective for possible layers), 2) Real-time processing with high immediacy of a communication system can be realized by being able to quickly establish a data transfer enable state.

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

【図1】本発明を適用した対策後の信号の衝突・信号の
すれ違いのシーケンスである。
FIG. 1 is a sequence of signal collision / signal passing after countermeasures to which the present invention is applied.

【図2】本発明を適用した対策後の状態遷移図の一部で
ある。
FIG. 2 is a part of a state transition diagram after a countermeasure to which the present invention is applied.

【図3】通信機能が階層化された通信システム構成例で
ある。
FIG. 3 is an example of a communication system configuration in which communication functions are hierarchized.

【図4】対策前の信号の衝突・信号のすれ違いのシーケ
ンスである。
FIG. 4 is a sequence of signal collision and signal passing before countermeasures are taken.

【図5】対策前の状態遷移図の一部である。FIG. 5 is a part of a state transition diagram before countermeasures.

【符号の説明】[Explanation of symbols]

UA 非番号制確認レスポンス RR 受信可コマンド/レスポンス LCW リンクコマンド語 LSW リンク状態語 UA Unnumbered confirmation response RR Receivable command / response LCW Link command word LSW Link status word

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 通信機能が階層化された通信システム間
の通信手順でレイヤやレイヤ間で発生する信号の衝突・
信号のすれ違いに対する信号制御方法において、 上位レイヤからのリンクコネクション設定要求と下位レ
イヤからのリンクコネクション着信通知信号の衝突が発
生した場合、下位レイヤに受信可コマンド/レスポンス
(RR)送信要求のシステムコールを衝突の発生した当
該レイヤから発行し、 上位レイヤからのリンクコネクション設定要求と、当該
レイヤからのイベント通知で信号のすれ違いが発生した
場合、該上位レイヤが該イベントをもって、該リンクコ
ネクション設定要求処理を要求発行元の該上位レイヤで
正常終了させることを特徴とする信号制御方法。
1. A collision of signals generated between layers or between layers in a communication procedure between communication systems having hierarchical communication functions.
In the signal control method for signal passing, if a collision occurs between the link connection setup request from the upper layer and the link connection arrival notification signal from the lower layer, a system call for receiving a command / response (RR) request to the lower layer Is issued from the layer in which the collision has occurred, and when a signal has passed due to a link connection setting request from the upper layer and an event notification from the layer, the upper layer has the event and processes the link connection setting request. Is normally terminated in the upper layer of the request issuing source.
JP07294093A 1993-03-08 1993-03-08 Signal control method Expired - Fee Related JP3144606B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP07294093A JP3144606B2 (en) 1993-03-08 1993-03-08 Signal control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07294093A JP3144606B2 (en) 1993-03-08 1993-03-08 Signal control method

Publications (2)

Publication Number Publication Date
JPH06261101A true JPH06261101A (en) 1994-09-16
JP3144606B2 JP3144606B2 (en) 2001-03-12

Family

ID=13503880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP07294093A Expired - Fee Related JP3144606B2 (en) 1993-03-08 1993-03-08 Signal control method

Country Status (1)

Country Link
JP (1) JP3144606B2 (en)

Also Published As

Publication number Publication date
JP3144606B2 (en) 2001-03-12

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