JPH033460A - Data divisional transmission system for local area network system - Google Patents

Data divisional transmission system for local area network system

Info

Publication number
JPH033460A
JPH033460A JP1138675A JP13867589A JPH033460A JP H033460 A JPH033460 A JP H033460A JP 1138675 A JP1138675 A JP 1138675A JP 13867589 A JP13867589 A JP 13867589A JP H033460 A JPH033460 A JP H033460A
Authority
JP
Japan
Prior art keywords
data
frame
area
transmission
control header
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
Application number
JP1138675A
Other languages
Japanese (ja)
Inventor
Isao Oohiraochi
大平落　功
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.)
NEC Solution Innovators Ltd
Original Assignee
NEC Software Kyushu Ltd
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 NEC Software Kyushu Ltd filed Critical NEC Software Kyushu Ltd
Priority to JP1138675A priority Critical patent/JPH033460A/en
Publication of JPH033460A publication Critical patent/JPH033460A/en
Pending legal-status Critical Current

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  • Communication Control (AREA)

Abstract

PURPOSE:To improve the memory efficiency and the processing efficiency by using the area, from which divided data is already transmitted, of a data area to generate the control header of a frame to be next transmitted. CONSTITUTION:A first frame has a control header 4 stored in an idle area 2 for control header, and a frame 6 is transmitted together with data 5 divided to a maximum frame length. A next frame 9 has a control header 7 stored in the area of data 5, and the frame 9 is transmitted together with residual data 8. In the same manner, a next frame 12 has a control header 10 stored in the area of data 8 and is transmitted together with residual data 11. Since the transmission data area is used for the work of data division and control header addition and control headers are added to assemble transmission frames, the memory is economized, and the processing time is shortened because the data copy processing for generation of transmission frames is unnecessary.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、送信のためのデータ格納場所に制限があるロ
ーカルエリアネットワークシステムの連続したデータの
送信処理において、データの分割および制御用ヘッダの
付加を効率良く行うためのローカルエリヤネットワーク
システムにおけるデータ分割送信方式に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is directed to data division and control header processing in a continuous data transmission process of a local area network system where data storage locations for transmission are limited. This invention relates to a data division transmission method in a local area network system for efficiently adding data.

〔従来の技術〕[Conventional technology]

従来、この種の送信データの分割および制御用ヘッダの
付加方法としては、送信データの分割、制御用ヘッダの
付加時にあらかじめ確保していたフレーム送信用の領域
に、フレーム単位に分割したデータ及び制御用ヘッダを
格納するという手段をとるものが多かった。Conventionally, this type of method for dividing transmission data and adding control headers has been to divide the data divided into frames and control headers into an area reserved in advance for frame transmission when dividing transmission data and adding control headers. Many of them took the method of storing the header for

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかし、上述した従来の方法ではデータの分割時におい
て送信データの分割と制御用へ、ダの付加とのために、
あらかじめフレーム送信用の場所を確保しておく必要が
ある。また、データをフレーム単位にフレーム送信領域
に複写するためメモリ効率、処理効率が悪いという欠点
がある。However, in the conventional method described above, when dividing data, in order to divide the transmission data and add data for control,
It is necessary to secure a place for frame transmission in advance. Furthermore, since data is copied frame by frame to the frame transmission area, there is a drawback that memory efficiency and processing efficiency are poor.

〔課題を解決するための手段〕[Means to solve the problem]

本発明のローカルエリャネットワークシステムにおける
データ分割送信方式は、ローカルネットワークシステム
のデータ送信においてネットワークで定められた送信最
大フレーム長を越えるデータを送信する場合、そのデー
タ領域の分割したデータの送信を終えた領域を利用して
次に送信するフレームを制御用へ、ダを作成することに
より、次のフレームを送信して構成される。In the data division transmission method in the local area network system of the present invention, when transmitting data exceeding the maximum transmission frame length determined by the network in data transmission of the local network system, the transmission of the divided data of the data area is completed. The area is used to create a control area for the next frame to be transmitted, and the next frame is transmitted.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は本発明の一実施例の概略を示す説明図である。FIG. 1 is an explanatory diagram showing an outline of an embodiment of the present invention.

図中１は、送信要求時のデータ領域構造を示しており、
制御用ヘッダ用の空き領域２と実際の送信データ３とか
らなる連続した領域である。1 in the figure shows the data area structure at the time of a transmission request,
This is a continuous area consisting of a free area 2 for a control header and actual transmission data 3.

最初のフレームは、制御ヘッダ用の空き領域２に制御用
ヘッダ４を格納し、最大フレーム長に分割したデータ５
と共にフレーム６を送信する。そして、次のフレーム９
は、データ５の領域に制御用ヘッダ７を格納し残りのデ
ータ８と共にフレーム９を送信する。同様にして、次の
フレーム１２は、データ８の領域に制御用ヘッダ１０を
格納し残りのデータ１１と共にフレーム１２を送信する
。The first frame stores the control header 4 in the free area 2 for control headers, and the data 5 divided into the maximum frame length.
At the same time, frame 6 is transmitted. And the next frame 9
stores the control header 7 in the data 5 area and transmits the frame 9 together with the remaining data 8. Similarly, the next frame 12 stores the control header 10 in the data 8 area, and transmits the frame 12 together with the remaining data 11.

第２図は、本発明による送信手順を表している。FIG. 2 represents the transmission procedure according to the invention.

最初のフレームは制御データ用の空領域に制御用ヘッダ
を格納しくステップ１３）、最大フレーム長に分割した
データと共にフレームを送信する（ステップ１４）。そ
して、フレーム送信ごとにその完了をチエツクし完全に
送信できていなければリトライを行って完了させる（ス
テ、プ１５）。In the first frame, a control header is stored in an empty area for control data (step 13), and the frame is transmitted together with data divided into the maximum frame length (step 14). Then, each frame transmission is checked for completion, and if it is not completely transmitted, a retry is performed to complete the transmission (step 15).

かようにして全フレームの送信が完了すれば送信終了と
する（ステップ１６）。When the transmission of all frames is completed in this manner, the transmission is terminated (step 16).

本発明の方式では、２つめ以降のフレームの制御ヘッダ
は、前フレームの送信データ領域に作成スルタメ、前フ
レームの送信終了を確認して次のフレームの作成を行う
。これと共に、最初のフレームは、制御用ヘッダを格納
する領域がないため、データの領域の先頭には最初のフ
レーム送信の為の制御用ヘッダ用に空き領域が必要であ
る。In the method of the present invention, the control headers of the second and subsequent frames are created in the transmission data area of the previous frame, and the next frame is created after confirming the completion of transmission of the previous frame. At the same time, since the first frame does not have an area for storing a control header, an empty area is required at the beginning of the data area for the control header for transmitting the first frame.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、データの分割、制
御用ヘッダの付加処理において、作業場所は送信データ
領域を使って制御用ヘッダを付加し送信フレーム組み立
てるためにメモリの節約を図ることができ、また送信フ
レーム作成のためのデータ複写処理も不要であるため処
理時間の短縮にもつながるという効果がある。As explained above, according to the present invention, in the process of dividing data and adding control headers, the work place can save memory by using the transmission data area to add control headers and assemble transmission frames. This also has the effect of reducing processing time since data copying processing for creating a transmission frame is not required.

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

第り図は、本発明の一実施例の概略を示す説明図、第２
図は本発明の一実施例による送信手順を示すブロック図
。 １・・・・・・送信要求時のデータ領域構造、２・旧・
・制御ヘッダ用空き領域、３・・・・・・送信データ、
４・７・１０・・・・・・制御用ヘッダ、５・８・１１
・・・・・・データ、６・９・１２・・・・・・フレー
ム。Fig. 2 is an explanatory diagram showing an outline of one embodiment of the present invention, Fig.
The figure is a block diagram showing a transmission procedure according to an embodiment of the present invention. 1... Data area structure at the time of transmission request, 2. Old...
・Free area for control header, 3...Transmission data,
4, 7, 10... Control header, 5, 8, 11
...Data, 6, 9, 12...frame.

Claims (1)

【特許請求の範囲】[Claims] ローカルネットワークシステムのデータ送信においてネ
ットワークで定められた送信最大フレーム長を越えるデ
ータを送信する場合、そのデータ領域の分割したデータ
の送信を終えた領域を利用して次に送信するフレームの
制御用ヘッダを作成することにより、次のフレームを送
信して成ることを特徴とするローカルエリアネットワー
クシステムにおけるデータ分割送信方式。When transmitting data in a local network system that exceeds the maximum transmission frame length determined by the network, the control header of the next frame to be transmitted is created using the area where the divided data of the data area has been transmitted. A data division transmission method in a local area network system characterized by transmitting the next frame by creating a frame.
JP1138675A 1989-05-30 1989-05-30 Data divisional transmission system for local area network system Pending JPH033460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1138675A JPH033460A (en) 1989-05-30 1989-05-30 Data divisional transmission system for local area network system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1138675A JPH033460A (en) 1989-05-30 1989-05-30 Data divisional transmission system for local area network system

Publications (1)

Publication Number Publication Date
JPH033460A true JPH033460A (en) 1991-01-09

Family

ID=15227481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1138675A Pending JPH033460A (en) 1989-05-30 1989-05-30 Data divisional transmission system for local area network system

Country Status (1)

Country Link
JP (1) JPH033460A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5799809A (en) * 1995-02-16 1998-09-01 Yoshino Kogyosho Co., Ltd. Blow molded container and blow mold thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5799809A (en) * 1995-02-16 1998-09-01 Yoshino Kogyosho Co., Ltd. Blow molded container and blow mold thereof

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