JPS63102424A - Signal transmitter - Google Patents

Signal transmitter

Info

Publication number
JPS63102424A
JPS63102424A JP61247758A JP24775886A JPS63102424A JP S63102424 A JPS63102424 A JP S63102424A JP 61247758 A JP61247758 A JP 61247758A JP 24775886 A JP24775886 A JP 24775886A JP S63102424 A JPS63102424 A JP S63102424A
Authority
JP
Japan
Prior art keywords
transmission
frame
response information
reply information
section
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
JP61247758A
Other languages
Japanese (ja)
Other versions
JPH077944B2 (en
Inventor
Mie Saito
斉藤 美恵
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP61247758A priority Critical patent/JPH077944B2/en
Publication of JPS63102424A publication Critical patent/JPS63102424A/en
Publication of JPH077944B2 publication Critical patent/JPH077944B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To simplify the transmission error correction control due to retransmission and to cope with a system having a long delay time by providing a reply information expected value calculation section and a frame number calculating section so as to detect a transmission error frame. CONSTITUTION:At first a transmission control section 11 sends a transmission signal to a data line 15 periodically in the unit of frame and informs the present time and transmission frame number to the reply information expect calculation section 12. The calculation section 12 calculates the time returned for reply information of the transmission frame and generates a table as shown in figure. On the other hand, a reception control section 17 checks the transmission line error check of the received frame at each frame and informs the result and the received frame number to a reply information sending section 18. The transmission section 18 sends the prescribed reply information to a reply information line 19. The reply information reception section 14 receives it and informs it to the calculation section 13. The calculation section 13 obtains a reply information expect frame number from the generation table of the calculation section 12 and the present time and when the reply information and this number satisfy the prescribed condition, the error generation frame number is discriminated, the number is resent to correct the transmission error.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ファクシミリ信号など情報を送信局より回線
を介して受信局に伝達する信号伝送装置に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a signal transmission device for transmitting information such as facsimile signals from a transmitting station to a receiving station via a line.

従来の技術 デジタル符号を正しく受信局に伝送するためには、送り
を訂正する誤り制御方式が必要となる。
Prior Art In order to correctly transmit a digital code to a receiving station, an error control method for correcting the transmission is required.

データ伝送における誤り制御方式としてARQている。ARQ is used as an error control method in data transmission.

以下、第5図を参照して従来のARQ方式を用いた信号
伝送装置について説明する。
Hereinafter, a signal transmission device using the conventional ARQ method will be explained with reference to FIG.

第5図において、51は送信装置であり、52は信号を
一定量のフレームを構成し送出する伝送制御部、53は
応答情報を受信する応答情報受信部、54はデータ用回
線である。55は受信装置であり、56はフレームを受
信して受信フレームを正しく受信したか否かを判別する
受信制御部、57は受信フレームを正しく受信したか否
かの情報を応答情報として、送信装置51へ送信する応
答情報送信部、58はその応答情報用回線である。
In FIG. 5, 51 is a transmitting device, 52 is a transmission control unit that configures and sends a signal into a certain amount of frames, 53 is a response information receiving unit that receives response information, and 54 is a data line. 55 is a receiving device, 56 is a reception control unit that receives a frame and determines whether or not the received frame has been correctly received, and 57 is a transmitting device that receives information as response information as to whether or not the received frame has been correctly received. 51 is a response information transmission section, and 58 is a line for response information.

以上のような構成において、以下その動作について説明
する。まず、送信装置51における伝送制御部52によ
り、送信信号を一定量のフレームに分け、各フレームに
各種制御情報およびFe2(Frame Check 
5equence )符号と呼ばれる伝送路上で生じる
誤りを検出するための符号を付加してフレームを構築し
、フレーム単位でデータ用回線54に送出する。受信装
置55における受信制御部56は、フレーム毎に受信フ
レームをFC8符号を用いて伝送路誤りチェックを行な
い、受信フレームに誤りがあったかどうかを知ることが
できる。受信制御部56は、誤りがあったか否かの情報
を応答情報送信部57へ通知し、応答情報送信部57は
、正しく受信できた場合は、フレーム毎にその旨の信号
(以下ACKと称する。)を受信フレームと同様にフレ
ームを構成して応答情報用回線58を用いて応答情報受
信部53に送信する。また、誤って受信した場合にも、
フレーム毎にその旨の信号(以下NACKと称する。)
を応答情報受信部に送信する。そして応答情報受信部は
、ACK信号を受信できなかった場合りで該当フレーム
から再送を行なう指示を伝送制御部52へ通知する。伝
送制御部52は応答情報受信部53からの再送指示によ
り、フレームの再送を行ない、伝送路誤りを訂正する。
The operation of the above configuration will be explained below. First, the transmission control unit 52 in the transmitter 51 divides the transmission signal into a certain number of frames, and each frame is provided with various control information and Fe2 (Frame Check).
5equence) A frame is constructed by adding a code called a code for detecting errors occurring on a transmission path, and is sent to the data line 54 in units of frames. The reception control unit 56 in the receiving device 55 performs a transmission path error check on each received frame using the FC8 code, and can know whether there is an error in the received frame. The reception control unit 56 notifies the response information transmission unit 57 of information as to whether there is an error or not, and if the response information transmission unit 57 has successfully received the frame, it sends a signal to that effect (hereinafter referred to as ACK) for each frame. ) is constructed into a frame in the same manner as the received frame, and is transmitted to the response information receiving section 53 using the response information line 58. Also, if you receive it by mistake,
A signal to that effect for each frame (hereinafter referred to as NACK)
is sent to the response information receiving section. Then, the response information receiving section notifies the transmission control section 52 of an instruction to retransmit the corresponding frame in case the ACK signal cannot be received. The transmission control unit 52 retransmits the frame in response to a retransmission instruction from the response information receiving unit 53, and corrects transmission path errors.

発明が解決しようとする問題点 しかし、以上のような構成では、一般に伝送時間を短縮
するために送信部#51は、ある送信フレームの送信が
完了したら、それに対する応答情報が戻って(るのを待
たずに次の送信フレームを送信する。そのため、送信し
たフレームとその応答情報の対応づけが困難となり、再
送による伝送路誤り訂正の制御が複雑になる。遅延時間
が長いシステムになるといっそうその制御は、複雑とな
るという問題があった。
Problems to be Solved by the Invention However, in the above-described configuration, in general, in order to shorten transmission time, the transmitter #51 returns response information to it after completing transmission of a certain transmission frame. The next transmission frame is sent without waiting for the next transmission frame.This makes it difficult to associate the transmitted frame with its response information, and the control of transmission path error correction by retransmission becomes complicated.This becomes even more difficult in systems with long delay times. The problem is that the control is complicated.

本発明は従来技術の以上のような問題を解決するもので
、送信したフレームとその応答情報の対応づけを行ない
、再送による伝送路誤り訂正制御を簡単化し、さらに伝
送路遅延時間の長いシステムに対しても、パラメータの
変更のみで対応でき、かつ遅延時間のずれに対しても対
応できる、伝送路誤り訂正制御を行ない、デジタル符号
を正しく受信局へ伝送することを目的とするものである
The present invention solves the above-mentioned problems of the prior art by associating transmitted frames with their response information, simplifying transmission path error correction control by retransmission, and further improving the ability of systems with long transmission path delay times. The purpose of the present invention is to perform transmission path error correction control that can be handled simply by changing parameters and can also handle delay time deviations, so as to correctly transmit digital codes to receiving stations.

問題点を解決するための手段 本発明は情報信号を一定周期毎にフレームを構成し、送
出する送出手段と、送信されたフレームを正しく受信し
たか否かを判別する受信判別手段と、前記受信判別手段
の判別結果を送信側へ応答情報によって送出する応答情
報送信手段と、前記送信手段から情報信号を送信してか
ら前記応答情報送信手段からの応答情報が戻るまでの遅
延周期時間を知る遅延周期時間検出手段と、前記遅延周
期時間検出手段による遅延周期時間と前記送信したフレ
ームから応答情報の期待値を算出する期待値計算手段と
、前記期待値計算手段による応答情報の期待値と応答情
報から伝送誤りフレームを検出する伝送誤り検出手段と
を具備し、前記送出手段により再度所定のフレームを送
信することにより、上記目的を達成するものである。
Means for Solving the Problems The present invention provides a transmitting means for configuring and transmitting information signals into frames at regular intervals, a reception determining means for determining whether or not a transmitted frame has been correctly received, and a receiving means for determining whether or not a transmitted frame has been correctly received. response information transmitting means for transmitting the determination result of the determining means to the transmitting side as response information; and a delay for determining the delay cycle time from when the information signal is transmitted from the transmitting means until the response information is returned from the response information transmitting means. a period time detection means; an expected value calculation means for calculating an expected value of response information from the delay period time detected by the delay period time detection means and the transmitted frame; and an expected value of the response information and response information by the expected value calculation means. The above object is achieved by comprising a transmission error detection means for detecting a transmission error frame from a transmission error frame, and transmitting a predetermined frame again by the transmission means.

作    用 本発明は、上記構成により、送信したフレームとその応
答情報の対応づけ7行ない、かつ遅延周期時間と、送信
フレームからその応答情報の期待値を算出し、応答情報
と期待値より伝送誤りフレームを検出し、再送すること
による伝送誤り制御を行なうことができ、それにより、
遅延時間の長いシステム、及び遅延時間のいずれに対し
ても対応できる。
According to the above configuration, the present invention associates a transmitted frame with its response information in 7 lines, calculates the delay cycle time and the expected value of the response information from the transmitted frame, and detects a transmission error from the response information and the expected value. Transmission error control can be performed by detecting and retransmitting frames, thereby
It can handle both systems with long delay times and delays.

実施例 以下、図面を参照しながら、本発明の実施例について説
明する。
Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

第1図は、本発明の実施例における信号伝送装置のブロ
ック図である。第1図において、10は送信装置であり
、11はフレーム伝送制御を行なう伝送制御部、12は
応答情報の期待値を算出する応答情報期待値計算部、1
3はフレーム番号算出部、14は応答情報受信部、15
はデータ用回線である。16は受信装置であり、17は
フレームの受信制御を行なう受信制御部、18は受信フ
レームが正しく受信したか誤ったかの情報を送信装置1
0へ送信する応答情報送信部、19は応答情報用回線で
ある。
FIG. 1 is a block diagram of a signal transmission device in an embodiment of the present invention. In FIG. 1, 10 is a transmitting device, 11 is a transmission control unit that performs frame transmission control, 12 is a response information expected value calculation unit that calculates an expected value of response information, and 1
3 is a frame number calculating section, 14 is a response information receiving section, 15
is a data line. 16 is a receiving device, 17 is a reception control unit that controls frame reception, and 18 is a transmitting device 1 that transmits information on whether the received frame was received correctly or incorrectly.
19 is a line for response information.

以上のような構成において、以下その動作を説明する。The operation of the above configuration will be explained below.

まず、送信装置10における伝送制御部11は送信信号
を一定量のフレームに分け、各フレームに各種制御情報
およびFC8符号を付加し、第2図に示すフラグ、制御
情報、デジタル符号、Fe2から成るフレームを構築し
、フレーム単位で周期的にデータ用回線15へそのフレ
ームを送出する。その時フレームにはOより1ずつの昇
順で番号をつげる。(以下フレーム番号と称する。)フ
レーム番号は、フレーム番号算出部13より通知されろ
。伝送制御部】1は、応答情報期待値計算部12に対し
、現在の時刻(周期番号で表わす。)送信フレーム番号
を通知する。応答情報期待値計算部12は、現在の時刻
ftlと遅延周期時間(Dlから第(1)式より送信フ
レームの応答情報の戻る時刻を計算し、第3図に示すよ
うな表を作成する。
First, the transmission control unit 11 in the transmitter 10 divides the transmission signal into a certain number of frames, adds various control information and FC8 code to each frame, and consists of a flag, control information, digital code, and Fe2 as shown in FIG. A frame is constructed and sent to the data line 15 periodically in frame units. At that time, the frames are numbered in ascending order of 1 starting from O. (Hereinafter referred to as a frame number.) The frame number is notified by the frame number calculation unit 13. The transmission control unit 1 notifies the response information expected value calculation unit 12 of the transmission frame number at the current time (represented by a cycle number). The response information expected value calculation unit 12 calculates the return time of the response information of the transmitted frame from the current time ftl and the delay cycle time (Dl) using equation (1), and creates a table as shown in FIG.

T=t+D+m        ・・・・・・・・・(
1)(m≧1;遅延時間のずれを吸収するための定数)
一方、データ用回線15を介して受信されたフレームは
受信制御部17により、フレーム毎に受信フレームをF
C3符号を用いて、伝送路誤りチェックをし、受信フレ
ームに誤りかあったかどうかを判断する。受信制御部1
7は、伝送路誤りチェック結果と受信フレーム番号(F
(tl)を応答情報送信部18へ通知する。応答情報送
信部18は、正しく受信したフレームの最高のフレーム
番号(以下受信済フレーム番号(RF (t))と称す
る。)を第4図に示すフレーム構成して、応答情報用回
線19を用いて応答情報受信部14へ送信する。
T=t+D+m ・・・・・・・・・(
1) (m≧1; constant for absorbing delay time deviation)
On the other hand, frames received via the data line 15 are controlled by the reception control unit 17 to
A transmission path error check is performed using the C3 code to determine whether there is an error in the received frame. Reception control section 1
7 shows the transmission path error check result and the received frame number (F
(tl) is notified to the response information transmitting unit 18. The response information transmitter 18 configures the highest frame number of correctly received frames (hereinafter referred to as received frame number (RF(t))) into a frame as shown in FIG. 4, and uses the response information line 19. and transmits it to the response information receiving section 14.

すなわち、応答情報送信部14は受信フレームカウンタ
(RFC’)をもち、伝送路誤りチェック結果が、 1)正しい時 2)誤った時 RF(t)=RFCとする。
That is, the response information transmitter 14 has a received frame counter (RFC'), and when the transmission path error check result is: 1) correct, 2) incorrect, RF(t)=RFC.

(ただし、RFC:初期値Oとする。)以上の処理を行
ない、RF (tlを応答情報として送信する。さらに
、応答情報受信部14は、受信した応答情報をフレーム
番号算出部13へ通知する。
(However, the RFC: initial value is O.) After performing the above processing, the RF (tl) is transmitted as response information.Furthermore, the response information receiving unit 14 notifies the frame number calculation unit 13 of the received response information. .

フレーム番号算出部13では、現在の時刻と、応答情報
期待値計算部12で作成した第3図の情報から、応答情
報期待フレーム番号EXPT(t)を求めろ。EXPT
(tlは第3図より現在の時刻が応答情報受信期待時刻
となる時、第3図に示されるフレーム番号とする。フレ
ーム番号算出部13は、応答情報と応答情報期待値フレ
ーム番号が次に示す条件第(2)式を満たす時、(RF
(t)+1)のフレーム番号に伝送誤りが発生したと判
断し、(RF(t)十1)のフレーム番号から再送を行
ない、伝送誤りを訂正する。
The frame number calculation unit 13 calculates the response information expected frame number EXPT(t) from the current time and the information shown in FIG. 3 created by the response information expected value calculation unit 12. EXPT
(tl is the frame number shown in FIG. 3 when the current time is the expected response information reception time from FIG. 3. When the condition No. (2) shown below is satisfied, (RF
It is determined that a transmission error has occurred in frame number (t)+1), and retransmission is performed from frame number (RF(t)11) to correct the transmission error.

すなわち、 1)RF(tl<EXPT(tlの時    ・・・・
・・・・・(2)(RF(tl−4−1)を送信フレー
ム番号として伝送制御部へ通知する。
That is, 1) RF(tl<EXPT(when tl...
(2) (Notify the transmission control unit of RF (tl-4-1) as the transmission frame number.

2)RF(tl≧EXPT(t)の時 (RF (tl + 1 )を送信フレーム番号として
伝送制御部へ通知する。
2) When RF (tl≧EXPT(t)) (RF (tl + 1) is notified to the transmission control unit as the transmission frame number.

なお、条件第(2)式が満された時(RF(tl+1)
のフレーム番号から順に再送を行ない、(RF (tl
+1)のフレーム番号が期待値となるまでは条件第(2
)式は検査を行d■ン以下前記に示す動作を繰り返し行
なう。
In addition, when condition No. (2) is satisfied, (RF(tl+1)
The retransmission is performed in order from the frame number of (RF (tl
+1) until the frame number becomes the expected value.
) expression is tested by repeating the above-mentioned operations from line d<n> onwards.

以上の説明から明らかなように、送信装置10に応答情
報期待値計算部12、フレーム番号算出部をもうけるこ
とにより、応答情報と期待値により伝送誤りフレームを
検出することで、遅延時間(D)の設定により遅延時間
の長いシステムに対しても対応することができ、かつm
の値を設定することで遅延時間のいずれに対して対応で
き、再送による誤り訂正制御を行なうことができる。
As is clear from the above explanation, by providing the response information expected value calculation section 12 and the frame number calculation section in the transmitting device 10, transmission error frames can be detected based on the response information and the expected value, thereby reducing the delay time (D). By setting , it is possible to support systems with long delay times, and m
By setting the value of , it is possible to deal with any delay time and perform error correction control using retransmission.

発明の効果 以上のように本発明は、送信装置に応答情報期待値計算
部、フレーム番号算出部をもうけることにより、応答情
報の期待値を求め、応答情報が期待値の条件に反した時
を伝送誤り発生と判断し、再送による伝送誤り制御を行
なうことで、遅延時間iDlのパラメータ設定により、
遅延時間の長いシステムに対しても簡単に再送による伝
送誤り制御を行なうことができる。また遅延時間のずれ
に対しても対応できろ。このようの再送による伝送誤り
訂正制御方式をもつ信号伝送装置は、衛星通信などのよ
うに1往復遅延時間の長いシステムに効果が大きい。
Effects of the Invention As described above, the present invention calculates the expected value of response information by providing a response information expected value calculation unit and a frame number calculation unit in the transmitting device, and detects when the response information violates the expected value condition. By determining that a transmission error has occurred and performing transmission error control through retransmission, by setting the delay time iDl parameter,
Transmission error control by retransmission can be easily performed even in systems with long delay times. Also, be able to deal with differences in delay time. A signal transmission device having such a transmission error correction control method using retransmission is highly effective in systems with a long one round trip delay time, such as satellite communication.

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

第1図は本発明の一実施例fおける信号伝送装置のブロ
ック結線図、第2図は同装置による伝送フレームの概念
図、第3図は同装置によるフレーム番号とその応答情報
が戻る時刻との関係を示すテーブルを示す図、第4図は
同装置による応答情報フレームの構成図、第5図は従来
の信号伝送装置のブロック結線図である。 】0・・・送信装置、11・・・伝送制御部、12・・
・応答情報期待値計算部、13・・・フレーム番号算出
部、14・・・応答情報受信部、15・・・データ用回
線、16・・・受信装置、17・・・受信制御部、18
・・・応答情報送信部、19・・・応答情報用回線。 第 2 図 第 3 図 第 4 図 第5図
FIG. 1 is a block diagram of a signal transmission device according to an embodiment of the present invention, FIG. 2 is a conceptual diagram of frames transmitted by the device, and FIG. 3 is a diagram showing the frame number and the time at which response information is returned by the device. FIG. 4 is a configuration diagram of a response information frame by the same device, and FIG. 5 is a block diagram of a conventional signal transmission device. ]0... Transmission device, 11... Transmission control unit, 12...
- Response information expected value calculation unit, 13... Frame number calculation unit, 14... Response information reception unit, 15... Data line, 16... Receiving device, 17... Reception control unit, 18
. . . Response information transmission unit, 19 . . . Response information line. Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】[Claims] 情報信号を一定周期毎にフレームを構成し、送出する送
出手段と、送信されたフレームを正しく受信したか否か
を判別する受信判別手段と、前記受信判別手段の判別結
果を送信側へ応答情報によって送出する応答情報送信手
段と、前記送信手段から情報信号を送信してから前記応
答情報送信手段からの応答情報が戻るまでの遅延周期時
間を知る遅延周期時間検出手段と、前記遅延周期時間検
出手段による遅延周期時間と前記送信したフレームから
応答情報の期待値を算出する期待値計算手段と、前記期
待値計算手段による応答情報の期待値と応答情報から伝
送誤りフレームを検出する伝送誤り検出手段とを具備し
、前記送出手段により再度所定のフレームを送信する信
号伝送装置。
A sending means that configures and sends out frames of information signals at regular intervals; a reception determining means that determines whether or not the transmitted frame has been correctly received; and a receiving means that transmits the determination result of the reception determining means to the transmitting side as response information. a response information transmitting means for transmitting response information, a delay cycle time detecting means for detecting a delay cycle time from when an information signal is transmitted from the transmitting means until the response information is returned from the response information transmitting means; and a delay cycle time detecting means for detecting the delay cycle time. expected value calculation means for calculating an expected value of response information from the delay cycle time by the means and the transmitted frame; and transmission error detection means for detecting a transmission error frame from the expected value of the response information and the response information by the expected value calculation means. A signal transmission device, comprising: a signal transmitting device for transmitting a predetermined frame again by the transmitting means.
JP61247758A 1986-10-17 1986-10-17 Signal transmission device Expired - Lifetime JPH077944B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61247758A JPH077944B2 (en) 1986-10-17 1986-10-17 Signal transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61247758A JPH077944B2 (en) 1986-10-17 1986-10-17 Signal transmission device

Publications (2)

Publication Number Publication Date
JPS63102424A true JPS63102424A (en) 1988-05-07
JPH077944B2 JPH077944B2 (en) 1995-01-30

Family

ID=17168225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61247758A Expired - Lifetime JPH077944B2 (en) 1986-10-17 1986-10-17 Signal transmission device

Country Status (1)

Country Link
JP (1) JPH077944B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008525287A (en) * 2004-12-27 2008-07-17 ゴールドアース キュムクルック サネイ イサラト イラキャット エー.エス. Card-type safe product packaging system
JP2010093862A (en) * 1999-01-08 2010-04-22 Telefon Ab L M Ericsson Communication device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010093862A (en) * 1999-01-08 2010-04-22 Telefon Ab L M Ericsson Communication device and method
JP2012227953A (en) * 1999-01-08 2012-11-15 Telefon Ab L M Ericsson Communication device and method
JP2008525287A (en) * 2004-12-27 2008-07-17 ゴールドアース キュムクルック サネイ イサラト イラキャット エー.エス. Card-type safe product packaging system

Also Published As

Publication number Publication date
JPH077944B2 (en) 1995-01-30

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