DE2844400A1 - Multiple transmitter radio network coordination system - reduces probability of simultaneous transmission by coding and identification of station for priority rating - Google Patents

Multiple transmitter radio network coordination system - reduces probability of simultaneous transmission by coding and identification of station for priority rating

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Publication number
DE2844400A1
DE2844400A1 DE19782844400 DE2844400A DE2844400A1 DE 2844400 A1 DE2844400 A1 DE 2844400A1 DE 19782844400 DE19782844400 DE 19782844400 DE 2844400 A DE2844400 A DE 2844400A DE 2844400 A1 DE2844400 A1 DE 2844400A1
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Germany
Prior art keywords
station
identifier
transmission
transmitter
significance
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
DE19782844400
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German (de)
Other versions
DE2844400C2 (en
Inventor
Peter Ing Grad Eichler
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.)
AEG Mobile Communication GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19782844400 priority Critical patent/DE2844400A1/en
Publication of DE2844400A1 publication Critical patent/DE2844400A1/en
Application granted granted Critical
Publication of DE2844400C2 publication Critical patent/DE2844400C2/de
Granted legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G08B27/008—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via TV or radio broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Coordination circuit will regulate the transmission times of different transmitters belonging to a number of stations of a radio network. The coordination circuit is automatically controlled if central synchronisation is not possible. It will reduce the probability of simultaneous transmission by more than one transmitter. Each station will have an identification code with an index number. In addition to its own identification or its own transmission time, each transmitter will contain a circuit which will automatically add the code of the first transmitting station to the radio telegram to be transmitted. This code will act as a reference for the order of transmission and the time of the station concerned. It will determine whether the index number of the station concerned is greater or smaller than that of the station destined to transmit first.

Description

Anordnung zur Koordination der SendezeitpunkteArrangement for the coordination of the transmission times

Die Erfindung betrifft eine Anordnung nach dem Oberbegriff des Anspruchs 1.The invention relates to an arrangement according to the preamble of the claim 1.

Zur Reduzierung der Wahrscheinlichkeit gleichzeitiger Aussendung bei verschiedenen Sendern eines Funknetzes sind z. B. die Anordnungen nach DE-AS 22 49 670 und DE-AS 23 51 013 bekannt, die mit Zufallsgeneratoren direkt oder indirekt den Sendezeitpunkt bestimmen Weiterhin ist bekannt, den Sendezeitpunkt über zentrale Zeitmarken-Geber zu steuern. Ein solches. Verfahren beschreibt z. B. DE-AS 21 06 309.To reduce the likelihood of simultaneous transmission at different transmitters of a radio network are z. B. the arrangements according to DE-AS 22 49 670 and DE-AS 23 51 013 known that with random number generators directly or indirectly Determine the transmission time It is also known to use the central To control the timestamp encoder. One such. Method describes e.g. B. DE-AS 21 06 309

Der Erfindung liegt die Aufgabe zugrunde, eine vom Funknetz selbst gesteuerte Koordination der Sendezeitpunkte auch dann zu ermöglichen, wenn eine zentrale Synchronisation nicht möglich ist und die Reduzierung der Wahrscheinlichkeit gleichzeitiger Aussendung durch zufälliges Aussenden nicht ausreichend ist, d. h. wenn eine zuverlässige Trennung der Sendezeitpunkte Bedingung ist.The invention is based on the object of the radio network itself to enable controlled coordination of the transmission times even if a central synchronization is not possible and reducing the probability simultaneous transmission is not sufficient due to random transmission, d. H. if a reliable separation of the transmission times is a prerequisite.

Erfindungsgemäß sind dazu in jedem Sender Mittel vorgesehen, um die Kennung einer als erste sendenden Station (auslösende Station) automatisch an ein zu übermittelndes Funktelegramm zusätzlich zur eigenen Kennung anzufügen, und um den eigenen Sendeplatz durch einen Vergleich der eigenen Kennung mit der Kennung der als erste sendenden Station festzulegen. Ist der Stellenwert E der eigenen Kennung größer als der Stellenwert A der Kennung der auslösenden Station, so wird der Sendeplatz E eingenommen. Ist E kleiner als A, so wird der Sendeplatz (A - E + 1) eingenommen. Der Zeitplatz zum Zeitpunkt des Empfangs einer anderen Station wird durch Vergleich der Kennung der empfangenen Station mit der Kennung der auslösenden Station ermittelt. Jeder Sender legt so automatisch selbst seinen Sendeplatz fest; es ist gleichgültig, von welchem anderen Sender er die Kennung der auslösenden Station erfährt.According to the invention means are provided in each transmitter to the ID of a station to be the first to send (triggering station) automatically to a add the radio telegram to be transmitted in addition to your own identifier, and in order to your own transmission slot by comparing your own ID with the ID of the station to be the first to send. Is the value E of your own identifier is greater than the value A of the identifier of the initiating station, then the transmission slot E taken. If E is smaller than A, the transmission slot (A - E + 1) is taken. The time slot at the time of receiving another station is determined by comparison the identifier of the receiving station is determined with the identifier of the initiating station. Each transmitter automatically determines its own transmission slot; it doesn't matter from which other transmitter he learns the identifier of the initiating station.

Eine Erweiterung bestehender Funknetze im Sinne der Erfindung ist auch ohne Neufestlegung der Stationskennungen möglich, diese Anordnung ist nicht an eine bestimmte Netzstruktur gebunden.An extension of existing radio networks within the meaning of the invention is also possible without redefining the station IDs; this arrangement is not possible bound to a certain network structure.

In einer vorteilhaften Erweiterung der erfindungsgemäßen Anordnung wird in jedem Sender der eigene Sendeplatz an das zu übermittelnde Funktelegramm angefügt. Eine empfangende Station braucht dann den momentanen Zeitplatz nicht über den tSmweg der Kennung der empfangenen Station zu vermitteln.In an advantageous extension of the arrangement according to the invention becomes the own transmission slot for the radio telegram to be transmitted in each transmitter appended. A receiving station then does not need the current time slot to convey the tSmweg of the identifier of the receiving station.

In einer günstigen Weiterbildung der erfindungsgemäßen Anordnung wird mit den Informationen - Kennung der empfangenen Station - Kennung der auslösenden Station - Sendeplatz der empfangenen Station eine Plausibilitätsüberprüfung zur Feh-Lererkennung durchgeführt.In a favorable development of the arrangement according to the invention with the information - Identifier of the receiving station - Identifier of the initiating station Station - sending place of the receiving station a plausibility check for Error detection carried out.

Wenn das Funknetz eine Zentrale enthält, so ist es vorteilhaft, ihr die Kennung mit dem Stellenwert 1 zuzuordnen und den zunehmend von der Zentrale entfernten Stationen die Kennungen mit zunehmend höherem Stellenwert. Dann nimmt wegen der erfindungsgemäßen Festlegung der Sendeplätze eine Nachricht immer zuerst den Weg in Richtung Zentrale.If the radio network contains a control center, it is advantageous to have your assign the identifier with the priority 1 and the increasingly of From the control center, stations removed the identifiers with increasing importance. Then takes a message because of the definition of the transmission slots according to the invention always the way to the head office first.

Im folgenden wird eine vorteilhafte Ausführung der erfindungsgemäßen Anordnung beschrieben.The following is an advantageous embodiment of the invention Arrangement described.

Anhand eines kettenförmigen Warnnetzes, Fig. 1, welches eine Alarmmeldung von einer beliebigen Station an alle anderen Stationen weiterleitet, soll der Vorgang der zeitlichen Staffelung der Sendezeitpunkte beschrieben werden.Using a chain-shaped warning network, Fig. 1, which an alarm message forwards from any station to all other stations, the process should the time grading of the transmission times are described.

Die Funkstationen 1 bis n sind nur über den Hochfrequenzkanal ansprechbar. Im gezeigten Fall arbeiten alle Stationen im Sende- und Empfangsfall auf der gleichen Frequenz (Simplex-Betrieb). Ein gleichzeitige. Senden von zwei Stationen kan wegen der auftretenden Iiiterferenz nicht zugelassen werden. Jede Station hat ihre Kennung; die Kennung der alarmauslösenden Station ist in jedem zu übertragenden Funktelegramn enthalten. Die Sendertastzeit zur Aussendung des Funktelegramms ist für jeden Sender gleich lang und wird mit T bezeichnet, der Zeitpunkt der Aussendung mit TE Die Kennung der Sender sei K - 1,2, .... 6, ...n.The radio stations 1 to n can only be addressed via the high-frequency channel. In the case shown, all stations work on the same when sending and receiving Frequency (simplex operation). A simultaneous. Sending from two stations is possible because of the occurring Iiterference are not allowed. Each station has its own identifier; the identification of the alarm-triggering station is in every radio telegram to be transmitted contain. The transmitter key time for sending the radio telegram is for each transmitter the same length and is denoted by T, the time of transmission with TE The identifier let the sender be K - 1,2, .... 6, ... n.

Die den Alarm auslösende Station sendet zum Zeitpunkt T ein Funktelegramm, das u. a. die Kennung dieser Station enthält. Das Funktelegramm wird von benachbarten Stationen empfangen und bezüglich des Kennzeichens der den Alarm auslösenden Station überprüft. Ist die übertragene Alarm-Kennung KA ermittelt, so wird diese mit der eigenen Stationskennung KE verglichen und daraus der Sendezeitplatz (reLative Zeitinformation) abgeleitet.The station triggering the alarm sends a radio telegram at time T, that i.a. contains the identifier of this station. The radio telegram is sent by neighboring Stations received and with regard to the identifier of the station triggering the alarm checked. If the transmitted alarm identifier KA is determined, it will be compared with the own station identifier KE compared and from this the transmission time slot (relative time information) derived.

Außerdem wird bei der Aussendung jeder Station im Funktelegramm die Kennzeichnung des jeweiligen Sende-Zeitplatzes in direkter Form durch T oder in indirekter Form über die Mit-E teilung der eigenen Kennung mitgeteilt (absolute Zeitinformation). Mit diesen Zeitinformationen kann nun der absolute Sendezeitpunkt bestimmt werden.In addition, when each station is sent in the radio telegram, the Identification of the respective transmission time slot in direct form by T or in Indirectly communicated via the notification of the own identifier (absolute Time information). With this time information, the absolute transmission time can now to be determined.

Am Beispiel der Alarmauslösung an Station 4 sei dies mit Hilfe von Fig. 1 und 2 näher erläutert.Using the example of the alarm triggering at station 4, this is done with the help of Fig. 1 and 2 explained in more detail.

Station 4: alarmauslösende Station; Zeitplatz: T Kennzeichnung im Telegramm: 4, 1 Station 3: empfängt Telegramm mit 4, 1 Zeitplatz zum Zeitpunkt des Empfangs: T Eigener Sendezeitplatz: 4-3+1 = 2 ## T2 Kennzeichnung im Telegramm: 4, 2 Station 5: empfängt Telegramm mit 4, 1 Zeitplatz zum Zeitpunkt des Empfangs: T1 Eigener Sendezeitplatz: 5)4 =JT d. h. Wartezeit bis Zeitplatz T5 erreicht ist Kennzeichnung im Telegramm: 4, 5 Station 1: empfängt Telegramm mit 4, 2 Zeitplatz zum Zeitpunkt des Empfangs: T2 Eigener Sendezeitplatz: 4-1+1 = 4ST4 d. h. Wartezeit bis Zeitplatz Ti erreicht ist Kennzeichnung im Telegramm: 4, 4 Auf gleiche Weise erhält man für jede Station sowohl den relativen Zeitplatz als auch den absoluten Sende zeitpunkt unabhängig davon, wessen Telegramm empfangen wurde.Station 4: station that triggered the alarm; Time location: T identification in Telegram: 4, 1 station 3: receives telegram with 4, 1 time slot at the time of Receive: T Own send time slot: 4-3 + 1 = 2 ## T2 Identification in the telegram: 4, 2 Station 5: receives telegram with 4, 1 time slot at the time of receipt: T1 own transmission time slot: 5) 4 = JT d. H. Waiting time until time slot T5 is reached Identification in the telegram: 4, 5 Station 1: receives telegram with 4, 2 time slot at the time of reception: T2 own transmission time slot: 4-1 + 1 = 4ST4 d. H. waiting period until time location Ti is reached. Identification in the telegram: 4, 4 In the same way you get both the relative time slot and the absolute time for each station Send time regardless of whose telegram was received.

Die folgende Tabelle soll noch einmal deutlich machen, wie die Sendeplatzverteilung geregelt ist, in Abhängigkeit davon, welche Station den Alarm auslöst. Alarmauslösung bei Station 1 2 3 4 5 6 n 1 1 2 3 4 5 6 n 2 2 1 2 3 4 5 n-1 Sendende 3 3 3 1 2 3 4 n-2 Station 4 4 4 4 1 2 3 n-3 5 5 5 5 5 1 2 n-4 6 6 6 6 6 6 1 n-5 Sendezeitplatz LeerseiteThe following table should make it clear once again how the transmission slot distribution is regulated, depending on which station triggers the alarm. Alarm triggered at the station 1 2 3 4 5 6 n 1 1 2 3 4 5 6 n 2 2 1 2 3 4 5 n-1 Senders 3 3 3 1 2 3 4 n-2 Station 4 4 4 4 1 2 3 n-3 5 5 5 5 5 1 2 n-4 6 6 6 6 6 6 1 n-5 Airtime slot Blank page

Claims (4)

P a t e n t a- n s p r ü c h e t Anordnung:zur Koordination des Aussendezeitpunktes verhiedener Sender von 1 ... n Stationen eines Funknetzes und zur Vermeidung gleichzeitiger Sendertastung, wobei jede Station eine Kennung mit einem Stellenwert 1 ... n besitzt, dadurch gekennzeichnet, daß in jedem Sender Mittel vorgesehen sind, um neben der eigenen Kennung oder dem eigenen Sendezeitplatz die Kennung einer als erste sendenden Station automatisch an ein zu übermittelndes Funktelegramm anzufügen, und um den eigenen Sendeplatz sowie Sendezeitpunkt durch einen Vergleich der eigenen Kennung mit derjenigen der als erste sendenden Station unter Einbeziehung der Kennung der empfangenen Station bzw. deren übermittelten Sendeplatz so festzulegen, daß a) wenn der Stellenwert der eigenen Kennung größer ist, als der Stellenwert der Kennung der als erste sendenden Station, derjenige Sendeplatz eingenommen wird, der dem Stellenwert der eigenen Kennung entspricht, b) wenn der Stellenwert der eigenen Kennung kleiner ist, als der Stellenwert der Kennung der als erste sendenden Station, der auf den Differenzwert der beiden Stellenwerte nächstfolgende Sendeplatz eingenommen wird.P a t e n t a n s p r ü c h e t Arrangement: for the coordination of the transmission time Avoided transmitter of 1 ... n stations in a radio network and to avoid simultaneous Transmitter keying, with each station having an identifier with a value of 1 ... n, characterized in that in each transmitter means are provided in addition to the own identifier or the own sending time slot the identifier of the first to send To automatically add the station to a wireless telegram to be transmitted, and to add the own transmission slot and transmission time by comparing one's own ID with that of the first sending station including the identifier of the received station or its transmitted transmission slot so that a) if the significance of the own identifier is greater than the significance of the identifier which is the first sending station, the one that is occupied by the The significance of your own identifier corresponds to b) if the significance of your own The identifier is less than the value of the identifier of the first sending station, the transmission slot following the difference between the two priority values will. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß in jedem Sender Mittel vorgesehen sind, um zusätzlich den eigenen Sendeplatz an das zu iibermittelnde Funktelegramm anzufügen.2. Arrangement according to claim 1, characterized in that in each Transmitter means are provided, in addition to the own transmission slot to the to be transmitted Add radio telegram. 3. Anordnung nach Anspruch 2, dadurch gekennzeichnet, daß in jedem Sender Mittel vorgesehen sind, um mit der empfangenen Kennung und Sendeplatz der empfangenen Station eine Plausibilitätsüberprüfung zur Fehlererkennung durchzuführen.3. Arrangement according to claim 2, characterized in that in each Transmitter means are provided to keep track of the received identifier and transmission slot receiving station to carry out a plausibility check for error detection. 4. Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine Zentrale mit einer Kennung mit möglichst niederem Stellenwert versehen wird, und zunehmend von der Zentrale entfernte Stationen die Kennungen mit zunehmend höherem Stellenwert aufweisen.4. Arrangement according to one of claims 1 to 3, characterized in that that a control center is provided with an identifier with the lowest possible significance becomes, and stations that are increasingly remote from the control center have the identifiers with increasing have a higher priority.
DE19782844400 1978-10-12 1978-10-12 Multiple transmitter radio network coordination system - reduces probability of simultaneous transmission by coding and identification of station for priority rating Granted DE2844400A1 (en)

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DE19782844400 DE2844400A1 (en) 1978-10-12 1978-10-12 Multiple transmitter radio network coordination system - reduces probability of simultaneous transmission by coding and identification of station for priority rating

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DE19782844400 DE2844400A1 (en) 1978-10-12 1978-10-12 Multiple transmitter radio network coordination system - reduces probability of simultaneous transmission by coding and identification of station for priority rating

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DE2844400A1 true DE2844400A1 (en) 1980-05-14
DE2844400C2 DE2844400C2 (en) 1987-06-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342431A1 (en) * 1982-12-02 1984-07-12 Racal Security Ltd., Newbridge, Midlothian MONITORING SYSTEM
EP0231291A1 (en) * 1985-07-23 1987-08-12 Ian Malcolm Chatwin Electronic surveillance system and transceiver unit therefor.
US5613211A (en) * 1992-10-07 1997-03-18 Nippon Steel Corporation Method of establishing inter base-station synchronization and mobile radio communicaton system using the method
DE19749526A1 (en) * 1997-11-08 1999-05-20 Hermann Prof Dr Rohling Autonomous data radio network organization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106309B2 (en) * 1971-02-10 1973-01-25 Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart PROCESS AND SYSTEM FOR WIRELESS CONTROL OF AT LEAST TWO OBJECTS VIA ONLY ONE HIGH FREQUENCY CHANNEL
DE2362765A1 (en) * 1973-12-17 1975-06-19 Battelle Institut E V Radio remote control - designed for large number of independent devices through common HF channel and command generators
DE2351013B2 (en) * 1973-10-11 1977-08-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt MESSAGE TRANSMISSION SYSTEM
DE2249670B2 (en) * 1972-10-11 1978-06-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for reducing the probability of a simultaneous occupancy of a transmission channel which can be evaluated at the receiving end or at least prevents undisturbed transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106309B2 (en) * 1971-02-10 1973-01-25 Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart PROCESS AND SYSTEM FOR WIRELESS CONTROL OF AT LEAST TWO OBJECTS VIA ONLY ONE HIGH FREQUENCY CHANNEL
DE2249670B2 (en) * 1972-10-11 1978-06-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for reducing the probability of a simultaneous occupancy of a transmission channel which can be evaluated at the receiving end or at least prevents undisturbed transmission
DE2351013B2 (en) * 1973-10-11 1977-08-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt MESSAGE TRANSMISSION SYSTEM
DE2362765A1 (en) * 1973-12-17 1975-06-19 Battelle Institut E V Radio remote control - designed for large number of independent devices through common HF channel and command generators

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342431A1 (en) * 1982-12-02 1984-07-12 Racal Security Ltd., Newbridge, Midlothian MONITORING SYSTEM
EP0231291A1 (en) * 1985-07-23 1987-08-12 Ian Malcolm Chatwin Electronic surveillance system and transceiver unit therefor.
EP0231291A4 (en) * 1985-07-23 1989-03-14 Ian Malcolm Chatwin Electronic surveillance system and transceiver unit therefor.
US5613211A (en) * 1992-10-07 1997-03-18 Nippon Steel Corporation Method of establishing inter base-station synchronization and mobile radio communicaton system using the method
DE19749526A1 (en) * 1997-11-08 1999-05-20 Hermann Prof Dr Rohling Autonomous data radio network organization
DE19749526C2 (en) * 1997-11-08 2001-10-25 Hermann Rohling Process for the automatic organization of a radio data transmission network

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