JPS6390249A - Response signal system in data communication - Google Patents
Response signal system in data communicationInfo
- Publication number
- JPS6390249A JPS6390249A JP61234326A JP23432686A JPS6390249A JP S6390249 A JPS6390249 A JP S6390249A JP 61234326 A JP61234326 A JP 61234326A JP 23432686 A JP23432686 A JP 23432686A JP S6390249 A JPS6390249 A JP S6390249A
- Authority
- JP
- Japan
- Prior art keywords
- response signal
- signal
- response
- data communication
- data
- 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
Links
- 230000008054 signal transmission Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 238000005562 fading Methods 0.000 abstract description 6
- 230000002950 deficient Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000011664 signaling Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1614—Details of the supervisory signal using bitmaps
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1664—Details of the supervisory signal the supervisory signal being transmitted together with payload signals; piggybacking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1692—Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1809—Selective-repeat protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
【発明の詳細な説明】
（ｆｉ業上の利用分野）
本発明はデータ通信における応答信号方式に関し、特に
公衆自動車電話システムにおける移動体データ通信に使
用される応答信号方式に関する。DETAILED DESCRIPTION OF THE INVENTION (FIELD OF APPLICATION IN FI INDUSTRY) The present invention relates to a response signaling system in data communications, and particularly to a response signaling system used for mobile data communications in a public automobile telephone system.
（従来の技術）
従来、この種の方式は、例えば次の文献に開示されてい
る： ’Ｂｅ１ｌ ｓｙｓｔｅｍ Ｄａｔａ Ｃｏｍｍ
ｕｎｉｃａｔｉｏｎｓＴｅｃｈｎｉｃａｌ Ｒｅｆｅｒ
ｅｎｃｅ ＰＵＢ４１１０６及びＰＵＢ４１２１２．
；「新・データ伝送システム」、昭和５７年８月３１日
、産業図書株式会社、副島俊雄、Ｐ、２１６〜Ｐ、２１
８：特願昭６０−１８９７６７号。これらの文献に開示
された技術内容は第２図に示すデータ通信のネットワー
クにおいてＡＣＵ付（ＮＣＵ付ともいう）データモデム
自動応答モードにプリセットされているものである。第
２図において、２１はＡ側の電話機、２２はＡ側のコン
ピュータ、２３はＡ側のモデム、２４はＢ側のモデム、
２５はＢ側のコンピュータである。(Prior Art) Conventionally, this type of system has been disclosed, for example, in the following document: 'Be1l system Data Comm
unicationsTechnical Refer
ence PUB41106 and PUB41212.
; "New Data Transmission System", August 31, 1980, Sangyo Tosho Co., Ltd., Toshio Soejima, P, 216-P, 21
8: Patent Application No. 189767-1983. The technical content disclosed in these documents is that a data modem equipped with an ACU (also referred to as equipped with an NCU) is preset to an automatic response mode in the data communication network shown in FIG. In FIG. 2, 21 is a telephone on the A side, 22 is a computer on the A side, 23 is a modem on the A side, 24 is a modem on the B side,
25 is a computer on the B side.
次に、第２図のネットワークにおける通信動作を説明す
る。ここで、第３図は一伝送制御手段を示す図である。Next, communication operations in the network shown in FIG. 2 will be explained. Here, FIG. 3 is a diagram showing one transmission control means.
先ず、Ａ側からＢ側に対して電話機２１をオフフックし
て電話を掛ける。ダイヤル要求のダイヤルトーンが間こ
え、Ａ側はダイヤルする。そして、Ｂ側ではリンギング
を受信し、かつリンガ−を検出して着呼を確認する。Ａ
側ではＢ側からのリングバックトーンが聞こえる。次に
、Ｂ側はＡ側に対して単一信号である応答信号（アンサ
−トーンともいう）を送信する。Ａ側はその応答信号を
レシーバにて聞きアポートする以前の任意時間内に発呼
モードにセットする。その以降は第２図のコンピュータ
２２．２５間のデータ通信に入る。First, a call is made from side A to side B by off-hooking the telephone 21. The dial tone for the dial request is heard, and the A side dials. Then, the B side receives the ringing, detects the ringer, and confirms the incoming call. A
On the side, you can hear the ringback tone from side B. Next, the B side transmits a single response signal (also called an answer tone) to the A side. The A side listens to the response signal at the receiver and sets the call mode within an arbitrary period of time before appointing. After that, data communication begins between the computers 22 and 25 in FIG.
勿論、データのモデム２３．２４はコンピュータ２２゜
２５に対して変復調を担う。一方、移動体データ通信の
場合も移動体データ通信のネットワークを示す第４図か
られかるように基本的には同様の方式がとられるが、無
線伝送路を持つので特有なレーリーフェージング現象、
人工雑音等によるデータ誤りが頻繁に発生することはよ
く知られている。Of course, the data modems 23, 24 are responsible for modulating and demodulating the computers 22, 25. On the other hand, in the case of mobile data communication, basically the same method is used as shown in Figure 4, which shows the mobile data communication network, but since it has a wireless transmission path, it suffers from the unique Rayleigh fading phenomenon.
It is well known that data errors frequently occur due to artificial noise.
これに伴って、コンピュータ側では対応できない特別な
誤り制御機能を含むモデムになる。例えば、上記文献に
記載されているが、モデム間で受信の承諾の可否を示す
信号であるｒＡＣＫ」 （受信結果が良好であることを
示す信号）、ｒＮＡＫＪ （受信結果が不良であるこ
とを示す信号）等の信号によって受信結果を確認する機
能がデータ通信の伝送手順上不可欠である。つまり、移
動体データ通信においては応答信号にＡＣＫ信号（又は
ＮＡＫ信号）を第５図の如く付加して同時に送信するよ
うにしている。As a result, modems include special error control functions that cannot be handled by computers. For example, as described in the above document, "rACK" (signal indicating that the reception result is good), which is a signal indicating whether reception is accepted between modems, rNAKJ (signal indicating that the reception result is bad), The function of confirming the reception result using a signal such as a signal) is essential in the transmission procedure of data communication. That is, in mobile data communications, an ACK signal (or NAK signal) is added to the response signal as shown in FIG. 5, and the response signal is transmitted at the same time.
（発明が解決しようとする問題点）
しかしながら、上記従来の方式では発呼側において応答
信号を受信してから発呼モードに設定してもＡＣＫ信号
（又はＮＡＫ信号）の受信までコンピュータ間のデータ
通信状態に入れず、よってデータを着呼側に伝送できな
いことになり、実行伝送効率を低下させる原因になって
いる。また、応答信号に付加したＡＣＫ信号（又はＮＡ
Ｋ信号）がフェージング現象、都市雑音等により欠落し
た場合、次の通信手順へ移行できなくデータ通信の初期
手順において既に失敗するという問題点があった。(Problem to be Solved by the Invention) However, in the above-mentioned conventional system, even if the calling side receives a response signal and sets the calling mode, the data between computers is The communication state cannot be established, and therefore data cannot be transmitted to the called party, which causes a decrease in the actual transmission efficiency. Also, the ACK signal (or NA
There is a problem in that if the K signal is lost due to fading phenomena, urban noise, etc., it is impossible to proceed to the next communication procedure and the initial procedure of data communication has already failed.
したがって、本発明はこれらの問題点を解決するための
もので、常に発呼モードの設定とほぼ同時にデータ通信
状態に入れる実行伝送効率を向上できるデータ通信にお
ける応答信号方式を提供することを目的とする。Therefore, the present invention is intended to solve these problems, and an object of the present invention is to provide a response signal system in data communication that can improve the execution transmission efficiency by always entering the data communication state almost simultaneously with the setting of the calling mode. do.
（問題点を解決するための手段）
本発明は前記問題点を解決するために送信側から送られ
てくるデータに対し、受信側は送信側にデータの受信結
果を含む応答信号伝送フォーマットを返送する構成のデ
ータ通信において、応答信号伝送フォーマットを複数個
の単一のデータを受信したことを示す応答信号と複数個
のデータの受信結果を示す信号を組合せて構成したこと
に特徴がある。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides that, in response to data sent from the transmitting side, the receiving side returns a response signal transmission format containing the data reception result to the transmitting side. A feature of the data communication structure is that the response signal transmission format is configured by combining a response signal indicating that a plurality of single pieces of data have been received and a signal indicating the reception result of the plurality of pieces of data.
（作用）
以上のような構成にした本発明によれば、送信側に対し
て受信側が本発明による応答信号伝送フォーマットを返
送することにより、送信側では応答信号受信後無駄な時
間を費やすことなく即座にデータの受信結果を示す信号
（ＡＣに信号又はＮＡＫ信号）を受信できる。よって、
送信側では即座にデータの送信可能状態になり得る。ま
た、応答信号伝送フォーマットの中に複数個のデータの
受信結果を示す信号が存在するために、フェージング現
象、都市雑音等によって一部応答信号伝送フオーマット
が欠落しても残存するデータの受信結果を示す信号を確
実に受信できる。(Operation) According to the present invention configured as described above, the receiving side returns the response signal transmission format according to the present invention to the transmitting side, so that the transmitting side does not waste time after receiving the response signal. A signal (AC signal or NAK signal) indicating the data reception result can be immediately received. Therefore,
The sending side can immediately become ready to send data. In addition, since there is a signal indicating the reception results of multiple pieces of data in the response signal transmission format, even if some response signal transmission formats are lost due to fading phenomena, urban noise, etc., the reception results of the remaining data can be transmitted. The indicated signal can be reliably received.
したがって、本発明は前記問題点を解決できるのである
。Therefore, the present invention can solve the above problems.
（実施例） 以下、本発明の一実施例を図面に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明の一実施例の応答信号伝送フォーマット
を示す図である。同図において、１，３゜５．７は単一
の応答信号、２，４，６．８はＡＣに信号である。ここ
で、ＡＣＫ信号２，４，６゜８はＮＡＫ信号でもよい。FIG. 1 is a diagram showing a response signal transmission format according to an embodiment of the present invention. In the figure, 1,3°5.7 is a single response signal, and 2,4,6.8 is an AC signal. Here, the ACK signals 2, 4, and 6°8 may be NAK signals.
同図かられかるように、応答信号１の次にＡＣＫ信号２
を、その次に応答信号３を、というように応答信号とＡ
ＣＫ信号を交互に設けた伝送フォーマットとした。ただ
し、各信号の組合せには限定しない。また、第１図の応
答信号１の始まりからＡＣに信号の終わりまでの時間は
従来とほぼ同じ時間とする。As can be seen from the figure, the response signal 1 is followed by the ACK signal 2.
, then response signal 3, and so on.
The transmission format uses alternating CK signals. However, it is not limited to the combination of each signal. Further, the time from the start of the response signal 1 in FIG. 1 to the end of the AC signal is approximately the same as the conventional one.
したがって、本実施例による応答信号伝送フォ−マット
を用いれば、着呼側の応答時には、先ず応答信号１で発
呼側は発呼モードに設定して短時間に直ぐ次のＡＣＫ信
号２を受信して受信結果を確認できる。よって、発呼側
と着呼側は即座にデータ通信状態に移行できる。また、
フェージング現象、都市雑音等によってＡＣに信号２が
欠落しても第２番目に相当するＡＣＫ信号４を受信でき
、確実に初期手順を失敗することなく処理できる。Therefore, if the response signal transmission format according to this embodiment is used, when the called side responds, the calling side first sets the call mode with response signal 1 and immediately receives the next ACK signal 2 in a short time. You can check the reception results by Therefore, the calling side and the called side can immediately shift to a data communication state. Also,
Even if the signal 2 is lost in the AC due to fading phenomena, urban noise, etc., the second ACK signal 4 can be received, and the initial procedure can be reliably processed without failure.
（発明の効果）
以上説明したように、本発明によれば、データ通信の初
期手順において、複数個の単一の応答信号と複数個のＡ
ＣＫ信号又はＮＡＫ信号とを組合せて応答信号伝送フォ
ーマットを構成することにより、発呼モードの設定とほ
ぼ同時にデータ通信状態に入れると共に、フェージング
現象、都市雑音等が発生しても確実にＡＣＫ信号又はＮ
ＡＫ信号を受信できるので確実に次の通信手順に移行で
きる実行伝送効率を向上できるデータ通信における応答
信号方式を提供できる。(Effects of the Invention) As explained above, according to the present invention, in the initial procedure of data communication, a plurality of single response signals and a plurality of A
By configuring the response signal transmission format in combination with the CK signal or NAK signal, the data communication state can be entered almost simultaneously with the setting of the calling mode, and the ACK signal or NAK signal can be reliably transmitted even when fading phenomena, urban noise, etc. occur. N
Since the AK signal can be received, it is possible to provide a response signal system in data communication that can reliably proceed to the next communication procedure and improve the effective transmission efficiency.
第１図は本発明の一実施例の応答信号伝送フォーマット
を示す図、第２図は一般のデータ通信のネットワークを
示すブロック図、第３図はデータ通信の伝送制御手順を
示す図、第４図は移動体データ通信のネットワークを示
す図、第５図は従来の応答信号伝送フォーマットを示す
図である。
１．３，５．７−・・応答信号、
２．４，６．８−ＡＣＫ信号。FIG. 1 is a diagram showing a response signal transmission format according to an embodiment of the present invention, FIG. 2 is a block diagram showing a general data communication network, FIG. 3 is a diagram showing a data communication transmission control procedure, and FIG. 4 is a diagram showing a transmission control procedure for data communication. This figure shows a mobile data communication network, and FIG. 5 shows a conventional response signal transmission format. 1.3, 5.7--Response signal, 2.4, 6.8--ACK signal.
Claims (1)
に前記データの受信結果を含む応答信号伝送フォーマッ
トを返送する構成のデータ通信において、 前記応答信号伝送フォーマットを複数個の単一の前記デ
ータを受信したことを示す応答信号と複数個の前記デー
タの受信結果を示す信号を組合せて構成することを特徴
とするデータ通信における応答信号方式。[Claims] In data communication configured such that, in response to data sent from the transmitting side, the receiving side returns a response signal transmission format including the reception result of the data to the transmitting side, A response signal system in data communication, characterized in that the response signal is configured by combining a response signal indicating that a single piece of data has been received and a signal indicating a reception result of a plurality of pieces of data.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61234326A JPS6390249A (en) | 1986-10-03 | 1986-10-03 | Response signal system in data communication |
| GB08722992A GB2197164A (en) | 1986-10-03 | 1987-09-30 | Formatting an answer signal |
| CA000548456A CA1294332C (en) | 1986-10-03 | 1987-10-02 | Method for formatting an answer signal in data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61234326A JPS6390249A (en) | 1986-10-03 | 1986-10-03 | Response signal system in data communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6390249A true JPS6390249A (en) | 1988-04-21 |
| JPH0548986B2 JPH0548986B2 (en) | 1993-07-23 |
Family
ID=16969250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61234326A Granted JPS6390249A (en) | 1986-10-03 | 1986-10-03 | Response signal system in data communication |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS6390249A (en) |
| CA (1) | CA1294332C (en) |
| GB (1) | GB2197164A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58201465A (en) * | 1982-05-19 | 1983-11-24 | Ricoh Co Ltd | Facsimile communication system |
| JPS60197095A (en) * | 1984-03-21 | 1985-10-05 | Tamura Electric Works Ltd | Signal transmission system of pushbutton telephone set |
| JPS6143850A (en) * | 1984-08-07 | 1986-03-03 | Nec Corp | Packet continuous transmission system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618358B2 (en) * | 1985-04-09 | 1994-03-09 | 沖電気工業株式会社 | Error control coding system |
| JPS6251326A (en) * | 1985-08-30 | 1987-03-06 | Oki Electric Ind Co Ltd | Retransmission control system in data communication |
-
1986
- 1986-10-03 JP JP61234326A patent/JPS6390249A/en active Granted
-
1987
- 1987-09-30 GB GB08722992A patent/GB2197164A/en not_active Withdrawn
- 1987-10-02 CA CA000548456A patent/CA1294332C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58201465A (en) * | 1982-05-19 | 1983-11-24 | Ricoh Co Ltd | Facsimile communication system |
| JPS60197095A (en) * | 1984-03-21 | 1985-10-05 | Tamura Electric Works Ltd | Signal transmission system of pushbutton telephone set |
| JPS6143850A (en) * | 1984-08-07 | 1986-03-03 | Nec Corp | Packet continuous transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0548986B2 (en) | 1993-07-23 |
| CA1294332C (en) | 1992-01-14 |
| GB2197164A (en) | 1988-05-11 |
| GB8722992D0 (en) | 1987-11-04 |
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