JPS63257350A - Contention control transmission system - Google Patents
Contention control transmission systemInfo
- Publication number
- JPS63257350A JPS63257350A JP9103787A JP9103787A JPS63257350A JP S63257350 A JPS63257350 A JP S63257350A JP 9103787 A JP9103787 A JP 9103787A JP 9103787 A JP9103787 A JP 9103787A JP S63257350 A JPS63257350 A JP S63257350A
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- Prior art keywords
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- message
- section
- retransmission
- unit
- Prior art date
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 94
- 238000012795 verification Methods 0.000 claims description 15
- 230000000644 propagated effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 18
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はポイント・トウーマルチポイント構成をとるマ
ルチ−バス型ネットワークにおいて、送信メツセージと
送信先からの折り返しメツセージを照合することによシ
、競合制御ならびに再送を行う送信装置における競合制
御送信方式に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is designed to eliminate competition in a multi-bus network with a point-to-multipoint configuration by comparing outgoing messages and return messages from destinations. The present invention relates to a contention control transmission method in a transmitter that performs control and retransmission.
従来、この種の競合制御送信方式においては、送信メツ
セージと折９返しメツセージとの照合結果を、送信部の
前段にある処理装置に出力し、再送の場合も通常の送信
と同様の手順で前段の処理装置が送信部に対し送信要求
を行うという方式が採られている。ここでいう処理装置
とは、送信処理を含め種々の処理を行っている処理装置
を指す。Conventionally, in this type of contention control transmission system, the results of collation between the transmitted message and the returned message are output to a processing device at the front stage of the transmitter, and in the case of retransmission, the same procedure as for normal transmission is used to send the result to the processor at the front stage of the transmitter. A method is adopted in which the processing device issues a transmission request to the transmitter. The processing device here refers to a processing device that performs various processes including transmission processing.
また、競合制御の方法は、送信メツセージと折シ返しメ
ツセージを１ビツトずつ照合し、その照合結果が一致し
なかった時点で競合に負げたことが判別する。そして、
パス上はワイヤード番アンドになっているため複数の装
置が同時に送信を開始した場合、先に１０“を出した方
が競合に勝つのである。また、優先度処理の方法として
は、伝送路が空いてから送信開始までの待ち合せ時間で
行い、優先度の高いメツセージ（再送メツセージ）の方
が早く送信開始できる。In addition, the competition control method compares the transmitted message and the returned message bit by bit, and when the results of the comparison do not match, it is determined that the message has lost the competition. and,
Since there is a wired number AND on the path, if multiple devices start transmitting at the same time, the one that puts out 10" first will win the competition. Also, as a priority processing method, the transmission path This is done during the waiting time from when the message becomes available until the start of transmission, and messages with higher priority (resent messages) can start transmission earlier.
上述した従来の競合制御送信方式では、再送処理および
優先度処理を送信部の前段にある処理装置で行うため、
処理装置の負荷が重くなり、効率性に劣るという問題点
があった。In the conventional contention control transmission method described above, retransmission processing and priority processing are performed by a processing device located before the transmitter, so
There was a problem that the load on the processing device became heavy and the efficiency was poor.
本発明の競合制御送信方式は、送信・再送メツセージお
よび折り返しメツセージを伝搬する伝送路と、上記送信
・再送メツセージの先頭に再送回数にしたがう複数ビッ
トからなる優先度情報を作成・付〃口し上記伝送路に出
力する優先情報付加部と、通常は送信メツセージを再送
時は再送メツセージを上記優先情報付加部に出力する切
換部と、送信情報を送信メツセージとして上記切換部に
出力する送信部と、この送信部から出力された送信メツ
セージを記憶する記憶部と、再送時に上記記憶部に記憶
された送信メツセージを再送メツセージとして上記切換
部に出力する再送部と、再送回数をカウントしており折
や返しメツセージの先頭の優先度情報との照合および上
記記憶部に記憶された送信メツセージと折シ返しメツセ
ージを照合しその照合結果を出力しかつその折シ返しメ
ツセージより上記伝送路の空きを識別し空き情報を出力
する照合・識別部と、この照合・識別部から出力された
照合結果および空き情報を基に送信制御信号を上記送信
部と上記優先情報付加部および上記切換部ならびに上記
再送部と上記照合・識別部に出力する送信制御部とを備
えてなるようにしたものである。The contention control transmission method of the present invention creates and attaches priority information consisting of a plurality of bits according to the number of retransmissions at the beginning of the transmission/retransmission message and the transmission path for propagating the transmission/retransmission message and the return message. a priority information adding section that outputs to the transmission path; a switching section that normally outputs a retransmitted message to the priority information adding section when retransmitting a transmitted message; and a transmitting section that outputs transmission information as a transmission message to the switching section; There is a storage section that stores the transmitted message output from the transmitting section, a retransmission section that outputs the transmitted message stored in the storage section to the switching section as a retransmitted message when retransmitting, and a retransmission section that counts the number of retransmissions. Compare the return message with the priority information at the beginning of the return message, and compare the transmitted message stored in the storage unit with the return message, output the comparison result, and identify the empty transmission path from the return message. A verification/identification section that outputs availability information; and a transmission control signal based on the verification result and availability information output from the verification/identification section to the transmission section, the priority information addition section, the switching section, and the retransmission section. and a transmission control section that outputs to the collation/identification section.
本発明においては、折シ返しメツセージと送信メツセー
ジが一致せず競合に負けた場合の再送処理を記憶部に記
憶された送信メツセージを再送メツセージとして再送部
が出力することで行い、ｌた、優先度処理はメツセージ
の頭に数ビットの優先度情報をうけることで行う。In the present invention, when the return message and the transmitted message do not match and the competition is lost, the retransmission process is performed by the retransmission unit outputting the transmitted message stored in the storage unit as the retransmitted message. The priority processing is performed by receiving several bits of priority information at the beginning of the message.
以下、図面に基づき本発明の実施例全詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.
図において、１は送信・再送メツセージおよび折シ返し
メツセージを伝搬する伝送路、２は上記送信φ再送メツ
セージの先頭に再送回数にしたがう複数ビットからなる
優先度情報を作成・付加し上記伝送路１に出力する優先
情報付加部、３は通常は送信メツセージを再送時は再送
メツセージを上記優先情報付加部２に出力する切換部、
４は送信情報を送信メツセージとして上記切換部３に出
力する送信部、５はこの送信部４から出力された送信メ
ツセージを記憶する記憶部、６は再送時に上記記憶部５
に記憶された送信メツセージを再送メツセージとして上
記切換部３に出力する再送部、Ｔは再送回数を力９ント
しておシ折り返しメツセージの先頭の優先度情報との照
合および上記記憶部５に記憶された送信メツセージと折
り返しメツセージを照合しその照合結果を出力しかつそ
の折り返しメツセージより上記伝送路１の空きを識別し
空き情報を出力する照合・識別部、８はこの照合会識別
部７から出力された照合結果および空き情報を基に送信
制御信号を上記送信部４と上記優先情報付加部２および
上記切換部３ならびに上記再送部６と上記照合・識別部
７に出力する送信制御部である。In the figure, 1 is a transmission path through which transmitted/retransmitted messages and return messages are propagated, and 2 is a transmission path for creating and adding priority information consisting of multiple bits according to the number of retransmissions to the beginning of the above-mentioned transmission φ retransmission message. 3 is a switching unit that normally outputs a retransmitted message to the priority information adding unit 2 when retransmitting a transmitted message;
Reference numeral 4 indicates a transmitting unit that outputs the transmitted information as a transmitted message to the switching unit 3, 5 indicates a storage unit that stores the transmitted message output from this transmitting unit 4, and 6 indicates the above-mentioned storage unit 5 at the time of retransmission.
T is a retransmission unit that outputs the transmitted message stored in the above to the switching unit 3 as a retransmission message, and T is a retransmission unit that increments the number of retransmissions, compares it with the priority information at the beginning of the return message, and stores it in the storage unit 5. A collation/identification unit 8 is output from the collation meeting identification unit 7, which collates the transmitted message and the return message, outputs the verification result, identifies the vacancy of the transmission path 1 from the return message, and outputs vacancy information. This is a transmission control unit that outputs a transmission control signal to the transmission unit 4, the priority information addition unit 2, the switching unit 3, the retransmission unit 6, and the verification/identification unit 7 based on the verification result and availability information. .
つぎにこの第１図に示す実施例の動作を説明する。Next, the operation of the embodiment shown in FIG. 1 will be explained.
まず、伝送路１は送信・再送メツセージおよび折シ返し
メツセージを伝搬し、また、優先情報付加部２は複数ビ
ットからなる優先度情報を作成し・切替部３から出力さ
れた送（Ｎ−再送メツセージａの先頭に付力目し伝送路
１に出力する。そして、数ビットからなる優先度情報は
通常の送信の場合はすべて １１＃にし、再送回数が増
すにつれて送出ｊ＠の後位から順に１０１に変えていく
。例えば、ビット数８の場合３回目の再送の場合 ％ｌ
“が５ビツト ｓＯ″が３ビツト、その後に送信メツセ
ージが出力される。First, the transmission path 1 propagates the transmitted/retransmitted message and the returned message, and the priority information addition section 2 creates priority information consisting of multiple bits and transmits the transmission (N-retransmission) output from the switching section 3. The priority information consisting of several bits is set to 11# for normal transmission, and as the number of retransmissions increases, the priority information of message a is output to transmission line 1 with emphasis placed on the beginning of message a. Change it to 101. For example, if the number of bits is 8, for the third retransmission %l
" is 5 bits, sO" is 3 bits, and then the transmitted message is output.
つぎに、切換部３は通常、送信部４から入力した送信メ
ツセージｂを、再送時には再送部６から入力した再送メ
ツセージＣを優先情報付力ロ部２に送信・再送メツセー
ジａとして出力する。そして、送信部４は入力した送信
１１Ｖ報ｄを送信メツセージの形に編集し、その送信メ
ツセージｂを切換部３および記憶部５に出力する。記憶
部５は送信部４から出力された送信メツセージｂを記憶
する。Next, the switching section 3 normally outputs the transmitted message b inputted from the transmitting section 4 and, when retransmitting, the retransmitted message C inputted from the retransmission section 6 to the priority information adding section 2 as the transmitted/retransmitted message a. Then, the transmitter 4 edits the input transmission 11V information d into a transmission message, and outputs the transmission message b to the switching section 3 and the storage section 5. The storage unit 5 stores the transmission message b output from the transmission unit 4.
つぎに、再送部６は記憶部５に記憶された送信メツセー
ジｅを入力とし再送メツセージＣとして切換部３に出力
する。そして、照合・識別部γは送信先から送り返され
た折り返しメツセージｆを照合し、その照合結果ｇを出
力する一方で、折り返しメツセージｆよｐ伝送路１の空
きを職別し、空き情報ｈ′！ｆ−出力する。まだ、送信
制御部８は照合・識別部７からの照合結果ｇおよび空き
情報りより優先情報付加部２と切換部３および送信部４
ならびに再送部６と照合・識別部７に送信制御情報ｉを
出力する。Next, the retransmission unit 6 receives the transmitted message e stored in the storage unit 5 and outputs it as a retransmitted message C to the switching unit 3. Then, the collation/identification unit γ collates the return message f sent back from the destination and outputs the verification result g, while classifying the vacancies of the return message f and p transmission line 1 by occupation, and vacancies information h' ! f - Output. Still, the transmission control unit 8 selects the priority information adding unit 2, the switching unit 3, and the transmitting unit 4 based on the verification result g from the verification/identification unit 7 and the availability information.
It also outputs transmission control information i to the retransmission section 6 and the collation/identification section 7.
なお、ｊは優先情報付加部２がら伝送路１に送出される
送信・再送メツセージであり、ｋは記憶部５から照合・
識別部７に送出される送信メツセージである。Note that j is a message sent/retransmitted from the priority information addition section 2 to the transmission path 1, and k is a message sent/retransmitted from the storage section 5 for verification/retransmission.
This is a transmission message sent to the identification unit 7.
つぎに第１図による送信の動作手順の−ｆｌＪを第２図
を参照して説明する。この第２図は第１図の動作説明に
供する競合制御送信方式の主要動作を示すフローチャー
トである。Next, the transmission operation procedure -flJ shown in FIG. 1 will be explained with reference to FIG. FIG. 2 is a flowchart showing the main operations of the contention control transmission system to explain the operation of FIG. 1.
まず、送信部４は動作手順１０１ で送信情報を入力す
る。そして、照合・識別部７は常に伝送路１の空きを監
視しておυ、空き情報を送信制御部８に伝え、この送信
制御部８は送信部４に送信の許可・禁止を指示する。送
信部４は送信制御部８の指示により伝送路１が空きにな
った時点で、入力した送信情報を切換部３および記憶部
５に出力する。また、優先情報付加部２は優先度情報を
すべて １］＃にする（動作手順１０２，１０３参照）
。First, the transmitter 4 inputs transmission information in operation procedure 101. The collation/identification section 7 constantly monitors the availability of the transmission path 1 and transmits the availability information to the transmission control section 8, which instructs the transmission section 4 to permit or prohibit transmission. The transmitting section 4 outputs the input transmission information to the switching section 3 and the storage section 5 when the transmission path 1 becomes vacant according to an instruction from the transmission control section 8 . In addition, the priority information addition unit 2 sets all priority information to 1]# (see operation steps 102 and 103).
.
切換部３は送信メツセージを優先情報付加部２に出力し
この優先情報付加部２で送信メツセージの先頭に優先度
情報を付加し伝送路１に出力する（動作手順１０４参照
）。The switching unit 3 outputs the transmitted message to the priority information adding unit 2, which adds priority information to the beginning of the transmitted message and outputs it to the transmission line 1 (see operation procedure 104).
つぎに、伝送路１に出力された送信メツセージは送信先
で受信と同時に折り返１−メツセージとして伝送路１に
送シ返され照合・識別部７に入力される（動作手順１０
５参照）。そして、この照合・識別部７は入力した折り
返しメツセージとカウントされた再送回数によシ優先度
清報および記憶部５に記憶された送信メツセージとの比
較・照合を行い、その結果を送信制御部８に出力し、不
一致になった時点で送信制御部８は切換部３に送信の中
断を指令する（動作手順１（１６，１０８参照）。Next, the transmission message outputted to the transmission path 1 is received at the transmission destination, and simultaneously sent back to the transmission path 1 as a return 1-message and inputted to the collation/identification section 7 (operation step 10).
(see 5). The verification/identification unit 7 then compares and verifies the input return message with the priority report and the transmitted message stored in the storage unit 5 based on the counted number of retransmissions, and sends the result to the transmission control unit. 8, and when a mismatch occurs, the transmission control unit 8 instructs the switching unit 3 to interrupt transmission (operation procedure 1 (see 16, 108)).
ここで、折り返しメツセージが最後まで一致した場合に
は送信を終了する（動作手順１０６．１０７参照〕。ま
た、送信全中断した場合も、送信部４は記憶部５に対し
送信メツセージを出力し＠け、全メツセージを記憶させ
る（動作子１＠１０９参照）。Here, if the return messages match until the end, the transmission ends (see operation steps 106 and 107).Also, even if the transmission is completely interrupted, the transmitting section 4 outputs the transmitted message to the storage section 5. and stores all messages (see operator 1@109).
そして、送信制御部８は照合・識別部７カ）らの伝送路
空き情報を基に、伝送路１が空きになったとき（動作手
順１１０参照）、再送を再送部６に指示するとともに、
優先情報付加部２では優先度情報を１ビツト送出順外方
向ヘシフトし、送出順最後のビットに％Ｏ＃をつける。Then, based on the transmission path vacancy information from the collation/identification section 7), the transmission control section 8 instructs the retransmission section 6 to retransmit when the transmission path 1 becomes vacant (see operation procedure 110).
The priority information addition unit 2 shifts the priority information by 1 bit in the direction out of the transmission order, and adds %O# to the last bit in the transmission order.
また、照合・識別部７では再送回数を１カウントアツプ
する（！ｉｌ１作手順１１１参照）。そして、切換部３
は再送メツセージを優先情報付加部２に出力し、ここで
優先情報がメツセージの先頭につけられ伝送路１に出力
される（動作子Ｉｌｌ １０４参照）。その後、この動
作手順１０４〜１１１にしたがい再送が終了するまで先
の再送手順ｆ：繰り返す。Further, the collation/identification unit 7 increments the number of retransmissions by one (see !il1 operation procedure 111). Then, the switching section 3
outputs the retransmitted message to the priority information adding section 2, where the priority information is added to the beginning of the message and output to the transmission path 1 (see operator Ill 104). Thereafter, the previous retransmission procedure f: is repeated according to the operation procedures 104 to 111 until the retransmission is completed.
以上説明したように、本発明によれば、折り返しメツセ
ージと送信メツセージが一致せず瑣合に負げた鳴音の再
送処理を、記憶部に記憶された送信メツセージを再送メ
ツセージとして再送部が出力することで行なっており、
また、優先度処理はメツセージの頭に数ビットの優先度
情報をつけることで行なっている。したがって、送信部
の前段にある処理装置は再送・優先度処理を行なう必要
がなくなり、処理装置の効率性を向上させる効果がある
。As explained above, according to the present invention, the retransmission unit outputs the transmission message stored in the storage unit as a retransmission message, in order to perform the retransmission process of a ringing sound caused by a mismatch between the return message and the transmission message. This is done by
Furthermore, priority processing is performed by adding several bits of priority information to the beginning of the message. Therefore, the processing device located upstream of the transmitter does not need to perform retransmission/priority processing, which has the effect of improving the efficiency of the processing device.
第１図は本発明の一実施例を示すブロック図、第２図は
第１図の動作説明に供するフローチャートである。
１・・・・伝送路、２・・・・優先情報付加部、３・・
・・切換部、４・・・・送信部、５・・・・記憶部、６
・・・・再送部、７・・・・照合晦識別部、８・・・−
送信制御部。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flowchart for explaining the operation of FIG. 1...Transmission path, 2...Priority information addition unit, 3...
...Switching section, 4...Transmission section, 5...Storage section, 6
...Retransmission part, 7... Verification identification part, 8...-
Transmission control unit.
Claims (1)
ス型ネットワークにおいて送信メッセージと送信先から
の折り返しメッセージを照合することにより、競合制御
ならびに再送を行う送信装置において、送信・再送メッ
セージおよび折り返しメッセージを伝搬する伝送路と、
前記送信・再送メッセージの先頭に再送回数にしたがう
複数ビットからなる優先度情報を作成・付加し前記伝送
路に出力する優先情報付加部と、通常は送信メッセージ
を再送時は再送メッセージを前記優先情報付加部に出力
する切換部と、送信情報を送信メッセージとして前記切
換部に出力する送信部と、この送信部から出力された送
信メッセージを記憶する記憶部と、再送時に前記記憶部
に記憶された送信メッセージを再送メッセージとして前
記切換部に出力する再送部と、再送回数をカウントして
おり折り返しメッセージの先頭の優先度情報との照合お
よび前記記憶部に記憶された送信メッセージと折り返し
メッセージを照合しその照合結果を出力しかつ該折り返
しメッセージより前記伝送路の空きを識別し空き情報を
出力する照合・識別部と、この照合・識別部から出力さ
れた照合結果および空き情報を基に送信制御信号を前記
送信部と前記優先情報付加部および前記切換部ならびに
前記再送部と前記照合・識別部に出力する送信制御部と
を備えてなることを特徴とする競合制御送信方式。In a multi-path network with a point-to-multipoint configuration, transmitting/retransmitting messages and returning messages are propagated in a transmitting device that performs contention control and retransmission by collating the transmitted message and the return message from the destination. a transmission line,
a priority information adding section that creates and adds priority information consisting of multiple bits according to the number of retransmissions to the beginning of the transmission/retransmission message and outputs it to the transmission path; a switching unit that outputs transmission information to the addition unit; a transmission unit that outputs transmission information as a transmission message to the switching unit; a storage unit that stores the transmission message output from the transmission unit; A retransmission unit that outputs a transmitted message to the switching unit as a retransmission message, which counts the number of retransmissions, compares it with priority information at the beginning of a return message, and compares the transmitted message stored in the storage unit with the return message. A collation/identification unit that outputs the verification result, identifies the vacancy of the transmission line based on the return message, and outputs the vacancy information; and a transmission control signal based on the verification result and vacancy information output from the verification/identification unit. A contention control transmission system, comprising: a transmission control section that outputs the information to the transmission section, the priority information addition section, the switching section, the retransmission section, and the collation/identification section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9103787A JPS63257350A (en) | 1987-04-15 | 1987-04-15 | Contention control transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9103787A JPS63257350A (en) | 1987-04-15 | 1987-04-15 | Contention control transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63257350A true JPS63257350A (en) | 1988-10-25 |
Family
ID=14015306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9103787A Pending JPS63257350A (en) | 1987-04-15 | 1987-04-15 | Contention control transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63257350A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006166479A (en) * | 2002-05-10 | 2006-06-22 | Interdigital Technology Corp | System and method for raising priority of retransmission of protocol data unit to assist radio-link-control retransmission |
-
1987
- 1987-04-15 JP JP9103787A patent/JPS63257350A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006166479A (en) * | 2002-05-10 | 2006-06-22 | Interdigital Technology Corp | System and method for raising priority of retransmission of protocol data unit to assist radio-link-control retransmission |
| JP4686365B2 (en) * | 2002-05-10 | 2011-05-25 | インターデイジタル テクノロジー コーポレーション | System and method for increasing the priority of retransmission of protocol data units for the purpose of supporting retransmission in radio link control |
| US8068497B2 (en) | 2002-05-10 | 2011-11-29 | Interdigital Technology Corporation | System and method for prioritization of retransmission of protocol data units to assist radio-link-control retransmission |
| JP2012105332A (en) * | 2002-05-10 | 2012-05-31 | Interdigital Technology Corp | System and method for raising order of priority of retransmission of protocol data units to assist radio link control retransmission |
| JP2012105331A (en) * | 2002-05-10 | 2012-05-31 | Interdigital Technology Corp | System and method for raising order of priority of retransmission of protocol data units to assist radio link control retransmission |
| US8565241B2 (en) | 2002-05-10 | 2013-10-22 | Interdigital Technology Corporation | System and method for prioritization of retransmission of protocol data units to assist radio-link-control retransmission |
| JP2014045492A (en) * | 2002-05-10 | 2014-03-13 | Interdigital Technology Corp | System and method for prioritization of retransmission of protocol data units to assist radio-link-control retransmission |
| US8929385B2 (en) | 2002-05-10 | 2015-01-06 | Interdigital Technology Corporation | System and method for prioritization of retransmission of protocol data units to assist radio link control retransmission |
| US9622257B2 (en) | 2002-05-10 | 2017-04-11 | Interdigital Technology Corporation | Prioritization of retransmission of protocol data units to assist radio link control retransmission |
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