JPH0748711B2 - Signal transmission method - Google Patents
Signal transmission methodInfo
- Publication number
- JPH0748711B2 JPH0748711B2 JP62037628A JP3762887A JPH0748711B2 JP H0748711 B2 JPH0748711 B2 JP H0748711B2 JP 62037628 A JP62037628 A JP 62037628A JP 3762887 A JP3762887 A JP 3762887A JP H0748711 B2 JPH0748711 B2 JP H0748711B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmission
- frame
- transmitted
- flag
- 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.)
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- Detection And Prevention Of Errors In Transmission (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、フレーム構成のディジタル信号を伝送する信
号伝送方式に利用する。特に、制御信号またはデータ信
号等の一連の信号を一以上のフレームに分割して伝送
し、さらに、伝送路の状態や信号の種類によりその信号
を繰り返し伝送する信号伝送方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used in a signal transmission system for transmitting a digital signal having a frame structure. In particular, the present invention relates to a signal transmission method in which a series of signals such as a control signal or a data signal is divided into one or more frames for transmission, and the signals are repeatedly transmitted depending on the state of the transmission path and the type of signal.
第５図は一般的な従来例信号伝送方式におけるフレーム
構成を示す。フレームは信号識別子１および信号本体２
で構成される。FIG. 5 shows a frame structure in a general conventional signal transmission system. The frame is a signal identifier 1 and a signal body 2
Composed of.
このフレーム構成を用いる信号伝送方式では、送信側お
よび受信側の双方において、伝送される種々の信号に対
して、それぞれの信号に対する信号識別子１と、その信
号の伝送形態とを記憶する。送信側では、信号送信時に
信号識別子１を付加するとともに、あらかじめ定められ
た信号形態でその信号を送信する。受信側では、まず信
号識別子１により信号種別を判定し、その信号種別に対
応した受信方法を用いて信号を受信する。これにより、
伝送路の状態や信号の種類によって同じ内容のフレーム
を繰り返し伝送できる。In the signal transmission method using this frame structure, the signal identifier 1 for each signal and the transmission form of the signal are stored for each of various signals to be transmitted on both the transmitting side and the receiving side. On the transmitting side, the signal identifier 1 is added at the time of signal transmission, and the signal is transmitted in a predetermined signal form. On the receiving side, first, the signal type is determined by the signal identifier 1, and the signal is received using the receiving method corresponding to the signal type. This allows
Frames having the same content can be repeatedly transmitted depending on the state of the transmission path and the type of signal.
このような従来例信号伝送方式では、伝送路の符号誤り
率特性があまり変化しない場合には、伝送すべき各種の
信号に対し、それぞれの信号の重要度に応じた回数だけ
同じ内容を繰り返し伝送すればよい。しかし、移動通信
や衛生通信のように、伝送路の符号誤り率特性が大きく
変化する伝送路に従来例方式を用いると、伝送すべき各
種の信号に対し、伝送路の符号誤り率特性が最悪の場合
を想定して繰り返し伝送の回数を設定する必要があり、
全体として信号伝送効率が劣化する欠点があった。In such a conventional signal transmission method, when the bit error rate characteristics of the transmission line do not change so much, the same contents are repeatedly transmitted for each type of signal to be transmitted, the number of times according to the importance of each signal. do it. However, if the conventional method is used for a transmission line in which the code error rate characteristic of the transmission line changes greatly, such as mobile communication and satellite communication, the code error rate characteristic of the transmission line is the worst for various signals to be transmitted. It is necessary to set the number of repeated transmissions assuming
There is a drawback that the signal transmission efficiency is deteriorated as a whole.
本発明は、以上の問題点を解決し、一以上のフレームに
分割された一連の信号を伝送でき、伝送路の状態に応じ
て同じ内容のフレームを繰り返して伝送でき、しかもそ
の繰り返し回数を柔軟に設定できる信号伝送方式を提供
することを目的とする。The present invention solves the above problems, can transmit a series of signals divided into one or more frames, can repeatedly transmit frames having the same content according to the state of the transmission path, and can flexibly change the number of repetitions. It is an object of the present invention to provide a signal transmission method that can be set to.
本発明の信号伝送方式は、一連の信号を一以上のフレー
ムに分割し、ひとつの内容のフレームを一回または繰り
返して伝送する信号伝送方式において、同一内容のフレ
ームを繰り返して伝送するか否か、繰り返して伝送する
場合にはその繰り返し回数を何回とするかを伝送路の符
号誤り率により設定し、各フレーム内に、そのフレーム
内の信号が一連の信号および繰り返し終了であるか否か
を示す信号終結フラグと、そのフレーム内の信号が前の
フレームで伝送された信号と同一信号であるか否かを示
す連送識別フラグとを挿入することを特徴とする。The signal transmission method of the present invention divides a series of signals into one or more frames, and transmits a frame having one content once or repeatedly, and whether or not the frame having the same content is repeatedly transmitted. , In the case of repeated transmission, set the number of repetitions by the code error rate of the transmission path, and determine whether the signal in that frame is a series of signals and the end of repetition within each frame. And a continuous transmission identification flag indicating whether or not the signal in the frame is the same signal as the signal transmitted in the previous frame.
本発明の信号伝送方式は、フレーム内の信号終結フラグ
と連送識別フラグとの組み合わせにより、一以上のフレ
ームに分割された一連の信号を伝送できると共に、伝送
路の状態に応じてひとつの内容のフレームを一回または
繰り返して伝送でき、しかもその繰り返し回数を柔軟に
設定できる。これにより、伝送路の符号誤り率が劣化し
た場合でも、繰り返し回数を本来の回数より多くし、多
数決判定等による誤り訂正を容易に付加でき、高効率で
信頼性の高い信号伝送が可能となる。The signal transmission system of the present invention can transmit a series of signals divided into one or more frames by a combination of a signal end flag in a frame and a continuous transmission identification flag, and one content according to the state of the transmission path. The frame can be transmitted once or repeatedly, and the number of repetitions can be set flexibly. As a result, even if the bit error rate of the transmission line is deteriorated, the number of repetitions can be made larger than the original number, error correction by a majority decision can be easily added, and highly efficient and reliable signal transmission becomes possible. .
すなわち、伝送路の状態が良好なときには繰り返し回数
を少なくして伝送効率を高めることができ、伝送路の状
態が劣化した場合には繰り返し回数を増やして信号伝送
の信頼性を高めることができる。That is, when the state of the transmission path is good, the number of repetitions can be reduced to improve the transmission efficiency, and when the state of the transmission path is deteriorated, the number of repetitions can be increased to improve the reliability of signal transmission.
第１図は本発明実施例信号伝送方式におけるフレーム構
成を示す。FIG. 1 shows a frame structure in the signal transmission system according to the embodiment of the present invention.
フレームは、信号本体２と、信号終結フラグ３と、連送
識別フラグ４とにより構成される。信号終結フラグ３お
よび連送識別フラグ４は、これらのフラグに必要な信頼
度に応じて１ないし数ビットで構成される。The frame includes a signal body 2, a signal end flag 3, and a continuous transmission identification flag 4. The signal end flag 3 and the continuous transmission identification flag 4 are composed of 1 to several bits depending on the reliability required for these flags.
ここで、伝送すべき信号を単一のフレームで構成される
単独信号と、複数フレームで構成される複合信号とに分
類する。また、同じ内容のフレームを繰り返し伝送する
回数により、一回送りと多数回送りとに分ける。信号終
結フラグ３および連送識別フラグ４のオン・オフ状態に
より、 （１）信号終結フラグ３および連送識別フラグ４が共に
オフのとき、 多数回送りの場合には同一信号の伝送の始まり、ま
たは、 一 回送りの場合には複合信号の最終フレーム以外の
信号、 （２）信号終結フラグ３がオフ、連送識別フラグ４がオ
ン（多数回送りの場合のみ）のとき、 伝送途中の信号、 （３）信号終結フラグ３がオン、連送識別フラグ４がオ
フ（一回送りの場合のみ）のとき、 単独信号、または、 複合信号の最終フレームの信号、 （４）信号終結フラグ３および連送識別フラグ４が共に
オン（多数回送りの場合のみ）のとき、 信号の終結 をそれぞれ示す。これを表に示す。Here, the signals to be transmitted are classified into a single signal composed of a single frame and a composite signal composed of a plurality of frames. Further, it is divided into one-time feed and multiple-time feed depending on the number of times that the frame having the same content is repeatedly transmitted. Depending on the ON / OFF states of the signal end flag 3 and the continuous feed identification flag 4, (1) when both the signal end flag 3 and the continuous feed identification flag 4 are OFF, the start of transmission of the same signal in the case of multiple feeds, Or a signal other than the last frame of the composite signal in the case of single feed, (2) Signal in the middle of transmission when the signal end flag 3 is off and the continuous feed identification flag 4 is on (only in the case of multiple feed) , (3) When the signal end flag 3 is on and the continuous transmission identification flag 4 is off (only in the case of single feed), a single signal or a signal of the final frame of the composite signal, (4) the signal end flag 3 and When both of the continuous transmission identification flags 4 are ON (only in the case of multi-feed), it indicates the end of the signal. This is shown in the table.
以上に説明したように、あるフレームの信号終結フラグ
３および連送識別フラグ４だけでは、そのフレームの信
号の状態を知ることはできない。フレームの信号の状態
を知るには、これらのフラグの状態遷移を知る必要があ
る。信号終結フラグ３および連送識別フラグ４の状態遷
移図を第２図に示す。 As described above, it is not possible to know the signal state of a frame only by the signal end flag 3 and the continuous transmission identification flag 4 of a frame. In order to know the state of the signal of the frame, it is necessary to know the state transition of these flags. A state transition diagram of the signal end flag 3 and the continuous transmission identification flag 4 is shown in FIG.
第２図において、状態遷移（Ａ）、（Ｂ）、（Ｃ）およ
び（Ｄ）はデータの終了および次のデータの開始を示
す。状態遷移（Ａ）、（Ｃ）の場合には、次のデータは
単独信号であり、一回だけ伝送される。状態遷移
（Ｂ）、（Ｄ）の場合には、次の状態遷移により三つの
形態に分かれる。次の状態遷移が（１）または（２）の
場合には、複合信号が多数回伝送される。次の状態遷移
が（３）の場合には、単独信号または複合信号が多数回
伝送される。このときの単独信号と複合信号との区別
は、信号終結までに状態遷移（３）以降に状態遷移
（４）を通るか否かにより決定される。状態遷移（４）
を通った場合には複合信号が多数回伝送され、通らなけ
れば単独信号が多数回伝送される。In FIG. 2, state transitions (A), (B), (C) and (D) indicate the end of data and the start of the next data. In the case of state transitions (A) and (C), the next data is a single signal and is transmitted only once. In the case of the state transitions (B) and (D), there are three forms depending on the next state transition. When the next state transition is (1) or (2), the composite signal is transmitted many times. When the next state transition is (3), the single signal or the composite signal is transmitted many times. The distinction between the single signal and the composite signal at this time is determined by whether or not the state transition (4) is passed after the state transition (3) before the signal is terminated. State transition (4)
If it passes, the composite signal is transmitted many times, and if it does not pass, the single signal is transmitted many times.
第３図および第４図は信号伝送例を示す。これらの図面
において、信号終結フラグ３のオン、オフをそれぞれ
Ｆ、で示し、連送識別フラグ４のオン、オフをそれぞ
れＳ、で示す。3 and 4 show examples of signal transmission. In these drawings, ON and OFF of the signal end flag 3 are indicated by F, and ON and OFF of the continuous transmission identification flag 4 are indicated by S.
第３図（ａ）は、各フレームでそれぞれ内容の異なる信
号本体２を伝送する場合の信号終結フラグ３および連送
識別フラグ４の使用例を示す。信号終結フラグ３はすべ
てオン、連送識別フラグ４はすべてオフである。第３図
（ｂ）は、伝送路の符号誤り率が劣化した場合の例を示
し、第３図（ａ）に示した各信号本体２をそれぞれ三つ
のフレームで繰り返し伝送する場合の信号終結フラグ３
および連送識別フラグ４の使用例を示す。この図に示す
ように、ひとつのフレームで伝送可能な信号を三つのフ
レームで繰り返し伝送する場合に、信号終結フラグ３
は、先頭から順にオフ、オフ、オンとなり、連送フラグ
４は先頭から順にオフ、オン、オンとなる。FIG. 3A shows an example of using the signal end flag 3 and the continuous transmission identification flag 4 when transmitting the signal body 2 having different contents in each frame. The signal end flags 3 are all on, and the continuous transmission identification flags 4 are all off. FIG. 3B shows an example in the case where the code error rate of the transmission line is deteriorated, and a signal end flag in the case where each signal body 2 shown in FIG. 3A is repeatedly transmitted in three frames. Three
An example of using the continuous transmission identification flag 4 will be shown. As shown in this figure, when a signal that can be transmitted in one frame is repeatedly transmitted in three frames, the signal end flag 3
Is sequentially turned off, off, and on from the beginning, and the continuous feeding flag 4 is turned off, on, and on from the beginning.
第４図（ａ）は、一連の信号が三つのフレームのそれぞ
れの信号本体２に分割された場合を示し、信号終結フラ
グ３は先頭から順にオフ、オフ、オンとなり、連送識別
フラグ４はすべてオフとなっている。第４図（ｂ）は、
伝送路の符号誤り率が劣化した場合に、第４図（ａ）に
示した信号を３×３のフレーム１で繰り返し伝送する場
合を示す。三つのフレームで一つの意味をもつ信号を３
×３のフレームで続けて伝送する場合、信号終結フラグ
３は８番目のフレームまでオフとなり、最終フレームで
オンとなる。連送識別フラグ４は、先頭から順にオフ、
オン、オンの繰り返しとなる。FIG. 4 (a) shows a case where a series of signals is divided into respective signal bodies 2 of three frames. The signal end flag 3 is turned off, off, and on sequentially from the beginning, and the continuous transmission identification flag 4 is set. All off. FIG. 4 (b) shows
A case where the signal shown in FIG. 4 (a) is repeatedly transmitted in a 3 × 3 frame 1 when the bit error rate of the transmission line is deteriorated is shown. 3 signals with one meaning in 3 frames
In the case of continuous transmission in the × 3 frame, the signal end flag 3 is turned off until the 8th frame and turned on in the last frame. The continuous transmission identification flag 4 is turned off in order from the beginning,
It turns on and off repeatedly.
通常は、送信側では第３図（ａ）または第４図（ａ）に
示した信号フォーマットで信号伝送を行い、何らかの手
段により伝送路の符号誤り率が劣化したことを検出する
と、信号フォーマットを第３図（ｂ）または第４図
（ｂ）に示したように変更して信号伝送を行う。受信側
では、フラグの状態が第３図（ａ）または第４図（ｂ）
に示したフォーマットから第３図（ａ）または第４図
（ｂ）に示したフォーマットに変化したことを検出する
と、信号受信形態を多数決判定に切り替えて受信する。Normally, on the transmitting side, signal transmission is performed in the signal format shown in FIG. 3 (a) or FIG. 4 (a), and when it is detected that the code error rate of the transmission path has deteriorated by some means, the signal format is changed. Signal transmission is performed by changing as shown in FIG. 3 (b) or FIG. 4 (b). On the receiving side, the state of the flag is as shown in FIG. 3 (a) or FIG. 4 (b).
When it is detected that the format shown in Fig. 3 has changed to the format shown in Fig. 3 (a) or Fig. 4 (b), the signal reception mode is switched to the majority decision to receive.
以上説明したように、本発明の信号伝送方式では、フレ
ーム内の信号終結フラグと連送識別フラグとを用いて、
種々の伝送形態をもつ信号を容易に伝送でき、伝送路の
符号誤り率が劣化した場合には、本来の伝送形態に加え
て多数回伝送および多数決判定等を容易に付加できる。As described above, in the signal transmission system of the present invention, by using the signal end flag and the continuous transmission identification flag in the frame,
It is possible to easily transmit signals having various transmission forms, and when the code error rate of the transmission line is deteriorated, it is possible to easily add multiple transmissions and majority decision in addition to the original transmission form.
本発明は、移動無線通信や衛生通信のような、伝送路の
符号誤り率が大きく変化する伝送路の信号伝送方式に利
用して大きな効果がある。このような伝送路に本発明を
利用することにより、伝送路の符号誤り率が良いときに
は冗長度の低い信号伝送を行い、伝送路の符号誤り率が
劣化した場合には冗長度を高くする。これにより、効率
がよく信頼性の高い信号伝送が可能となる効果がある。INDUSTRIAL APPLICABILITY The present invention has a great effect when applied to a signal transmission system of a transmission line in which the code error rate of the transmission line changes greatly, such as mobile radio communication and satellite communication. By applying the present invention to such a transmission line, signal transmission with low redundancy is performed when the code error rate of the transmission line is good, and redundancy is increased when the code error rate of the transmission line deteriorates. This has the effect of enabling efficient and highly reliable signal transmission.
第１図は本発明実施例信号伝送方式におけるフレーム構
成を示す図。 第２図は信号終結フラグおよび連送識別フラグの状態遷
移図。 第３図は信号伝送の一例を示す図。 第４図は信号伝送の一例を示す図。 第５図は従来例信号伝送方式におけるフレーム構成を示
す図。 １……信号識別子、２……信号本体、３……信号終結フ
ラグ、４……連送識別フラグ。FIG. 1 is a diagram showing a frame structure in a signal transmission system according to an embodiment of the present invention. FIG. 2 is a state transition diagram of the signal end flag and the continuous transmission identification flag. FIG. 3 is a diagram showing an example of signal transmission. FIG. 4 is a diagram showing an example of signal transmission. FIG. 5 is a diagram showing a frame structure in a conventional signal transmission system. 1 ... Signal identifier, 2 ... Signal body, 3 ... Signal end flag, 4 ... Continuous transmission identification flag.
Claims (1)
る 信号伝送方式において、 同一内容のフレームを繰り返して伝送するか否か、繰り
返して伝送する場合にはその繰り返し回数を何回とする
かを伝送路の符号誤り率により設定し、 各フレーム内に、そのフレーム内の信号が一連の信号お
よび繰り返しの終了であるか否かを示す信号終結フラグ
と、そのフレーム内の信号が前のフレームで伝送された
信号と同一信号であるか否かを示す連送識別フラグとを
挿入する ことを特徴とする信号伝送方式。1. A signal transmission system in which a series of signals is divided into one or more frames and one content frame is transmitted once or repeatedly, and whether or not the same content frame is repeatedly transmitted is repeated. When transmitting, the number of repetitions is set by the bit error rate of the transmission path, and in each frame it is indicated whether the signal in that frame is a series of signals and the end of repetition. A signal transmission method characterized by inserting a signal end flag and a continuous transmission identification flag indicating whether or not the signal in the frame is the same signal as the signal transmitted in the previous frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62037628A JPH0748711B2 (en) | 1987-02-20 | 1987-02-20 | Signal transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62037628A JPH0748711B2 (en) | 1987-02-20 | 1987-02-20 | Signal transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63204938A JPS63204938A (en) | 1988-08-24 |
| JPH0748711B2 true JPH0748711B2 (en) | 1995-05-24 |
Family
ID=12502902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62037628A Expired - Fee Related JPH0748711B2 (en) | 1987-02-20 | 1987-02-20 | Signal transmission method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0748711B2 (en) |
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| JP2010087711A (en) * | 2008-09-30 | 2010-04-15 | Sanyo Electric Co Ltd | Image processor |
| WO2012073394A1 (en) * | 2010-11-29 | 2012-06-07 | 株式会社アドバンテスト | Communication system and test device |
| JP5912500B2 (en) * | 2011-12-19 | 2016-04-27 | パナソニック デバイスＳｕｎｘ株式会社 | Data transmission system and data transmission method |
| JP2024022698A (en) * | 2020-10-30 | 2024-02-21 | 株式会社Preferred Networks | Communication device and communication method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58116825A (en) * | 1981-12-29 | 1983-07-12 | Fujitsu Ltd | Information successive collation system |
-
1987
- 1987-02-20 JP JP62037628A patent/JPH0748711B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58116825A (en) * | 1981-12-29 | 1983-07-12 | Fujitsu Ltd | Information successive collation system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003092296A1 (en) * | 2002-04-26 | 2003-11-06 | Nec Corporation | Moving picture data code conversion/transmission method and device, code conversion/reception method and device |
| WO2003092302A1 (en) * | 2002-04-26 | 2003-11-06 | Nec Corporation | Moving image transferring system, moving image encoding apparatus, moving image decoding apparatus, and moving image transferring program |
| WO2003092295A1 (en) * | 2002-04-26 | 2003-11-06 | Nec Corporation | Moving image transferring system, moving image encoding apparatus, moving image decoding apparatus, and moving image transferring program |
| CN100380976C (en) * | 2002-04-26 | 2008-04-09 | 日本电气株式会社 | Code conversion/transmission method and apparatus for movingpicture data, and code conversion/reception method and apparatus for movingpicture data |
| US7957465B2 (en) | 2002-04-26 | 2011-06-07 | Nec Corporation | Moving picture data code conversion/transmission method and device, code conversion/reception method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63204938A (en) | 1988-08-24 |
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