EP2093776B1 - Radio base station and hybrid cable for a radio base station - Google Patents

Radio base station and hybrid cable for a radio base station Download PDF

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Publication number
EP2093776B1
EP2093776B1 EP09002654.3A EP09002654A EP2093776B1 EP 2093776 B1 EP2093776 B1 EP 2093776B1 EP 09002654 A EP09002654 A EP 09002654A EP 2093776 B1 EP2093776 B1 EP 2093776B1
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EP
European Patent Office
Prior art keywords
mobile radio
base station
cable
inner conductor
coaxial cable
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EP09002654.3A
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German (de)
French (fr)
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EP2093776A3 (en
EP2093776A2 (en
Inventor
Thomas Pistner
Frank Falke
Dirk Schnare
Uwe Lonitz
Karsten Gehrke
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Vodafone Holding GmbH
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Vodafone Holding GmbH
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Priority claimed from DE102008010929A external-priority patent/DE102008010929A1/en
Application filed by Vodafone Holding GmbH filed Critical Vodafone Holding GmbH
Publication of EP2093776A2 publication Critical patent/EP2093776A2/en
Publication of EP2093776A3 publication Critical patent/EP2093776A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1804—Construction of the space inside the hollow inner conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/22—Cables including at least one electrical conductor together with optical fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements

Definitions

  • the invention is concerned with cables for transmitting electrical and optical signals, in particular around coaxial cables.
  • the invention relates to a method for converting a mobile radio station using a hybrid cable and a mobile radio station converted according to such a method.
  • RRH remote radio head
  • the transmitter mast can be set up at a RRH station up to several hundred meters from the base station.
  • the remote radio head in mobile radio is the outdoor and weatherproof installation of the power supply, transmitter and receiver module, power amplifier and filter on the antennas. Communication with the base station is usually via an optical fiber connection.
  • cables are known in which several types of conductors are combined in order to reduce installation costs or when special difficulties have to be overcome.
  • a data-energy hybrid line is known.
  • the hybrid cable is intended for applications in high-frequency shielded rooms and combines electrically shielded DC voltage cables with potential-free optical fibers in one cable.
  • a cable is known in which a power supply line, a data line and a control facility are combined to form a single cable with a common protective sheath.
  • the EP 1 391 897 A1 discloses a coaxial cable with an internal optical fiber and an associated two-part connector.
  • the US 5, 574, 815 discloses a communication cable consisting of a coaxial cable with an internal optical fiber.
  • the US 4,896,939 discloses a communication cable consisting of a coaxial cable with an internal optical fiber.
  • the cables known from the prior art are not suitable for facilitating the conversion from existing mobile radio stations to the modern RRH technology.
  • the hybrid cable comprises a coaxial cable with an outer conductor and a hollow inner conductor that encloses an interior.
  • the hybrid cable is characterized in that a data line is arranged in the interior of the inner conductor.
  • the data line is designed as an optical and / or electrical data line.
  • the hybrid cable is used for power supply and data exchange.
  • the invention creates a possible economical retrofitting for mobile radio systems.
  • the invention proposes a method according to claim 1.
  • the data source is designed as a base station.
  • the method makes it possible to create an RRH mobile radio system which is more economical than known RRH mobile radio systems.
  • the mobile radio station has a radio-frequency transmitter close to the antenna and a coaxial cable, the coaxial cable having a hollow inner conductor, an electrical or optical data line subsequently being drawn into the hollow inner conductor of the coaxial cable for connecting the radio-frequency transmitter close to the antenna to a data source, the inner conductor and an outer conductor of the Coaxial cables can be connected to a power supply and the inner conductor and the outer conductor can be connected to the radio-frequency transmitter close to the antenna.
  • the base station 107 is connected to the RRH 105 via a data line 108 for the purpose of data exchange.
  • data line 108 is an optical data cable for the transmission of optical data.
  • a power line 109 continues from the power supply 106 to the RRH 105.
  • the power line 109 is typically a 48 volt power connection.
  • a fuse box 110 is arranged between the power supply 106 and the RRH 105.
  • the mobile radio station shown is the high-frequency transmitter in the lower area of the building or at the foot of a mast on which the antennas 104 of the mobile radio system are arranged.
  • the high-frequency transmitter is only connected to the antennas via coaxial cables.
  • the invention proposes to use the existing coaxial cable both in a different and in addition to it in a new way.
  • Fig. 2 shows a coaxial cable 201, as is known from the prior art.
  • the coaxial cable 201 has an inner conductor 202 made of copper, which is hollow and surrounds an interior.
  • the inner conductor 202 is surrounded by a dielectric 203.
  • the dielectric 203 is enclosed by an outer conductor 204, which is insulated by a protective jacket 205 and is protected against external damage.
  • the high-frequency cable which connects the high-frequency transmitter to the antennas has a hollow copper inner conductor from a diameter of 7/8 "(2.2 cm).
  • the invention proposes to lay the data line 108 in the hollow inner conductor 202 of the coaxial cable 201.
  • the antenna cable 201 already installed in the mobile radio system is thus used to a certain extent as an empty conduit for laying the data line 108 required for the RRH 105.
  • This procedure when converting existing mobile radio stations to the new RRH technology has a number of advantages. This includes, in particular, a simplified installation and the resulting cost savings, because no new cable route has to be built. For example, it is avoided that new wall ducts have to be created. Furthermore, the additional data line 108 does not have to be ringed. No additional fire protection measures are necessary. Finally, the sensitive data lines 108 inside the coaxial cable 201 are very well protected against external influences, for example also against attacks by rodents.
  • coaxial cable 201 can also be used as a power cable 109 for the 48 V power supply of the RRH 105 by connecting the inner conductor 202 and the outer conductor 204 to the corresponding connections of the power supply 106 and the RRH 105.
  • the proposed use of the already installed coaxial cable 201 means that existing mobile radio stations can be converted to the new RRH technology at a significantly lower cost.

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  • Mobile Radio Communication Systems (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Near-Field Transmission Systems (AREA)
  • Waveguides (AREA)
  • Communication Cables (AREA)

Description

Technisches GebietTechnical field

Die Erfindung befasst sich mit Kabeln zum Übertragen von elektrischen und optischen Signalen, insbesondere um Koaxialkabel. Die Erfindung betrifft ein Verfahren zur Umrüsten einer Mobilfunkstation mittels eines Hybridkabels-und eine gemäß einem solchen Verfahren umgerüstete Mobilfunkstation.The invention is concerned with cables for transmitting electrical and optical signals, in particular around coaxial cables. The invention relates to a method for converting a mobile radio station using a hybrid cable and a mobile radio station converted according to such a method.

Hintergrund der ErfindungBackground of the Invention

Gegenüber bislang verwendeten Mobilfunkstationen haben so genannte Remote Radio Head (RRH)-Stationen den Vorteil, dass eine niedrigere Sendeleistung benötigt wird, weil der Hochfrequenzsender viel näher an der Antenne angeordnet und deshalb nur eine kürzere Hochfrequenzleitung zur Antenne erforderlich ist. Dieser Umstand erhöht den Wirkungsgrad der Mobilfunkstation ganz erheblich. Darüber hinaus kann der Sendemast bei einer RRH-Station bis zu mehreren hundert Metern von der Basisstation entfernt aufgestellt werden.Compared to previously used mobile radio stations, so-called remote radio head (RRH) stations have the advantage that a lower transmission power is required because the high-frequency transmitter is arranged much closer to the antenna and therefore only a shorter high-frequency line to the antenna is required. This fact significantly increases the efficiency of the mobile radio station. In addition, the transmitter mast can be set up at a RRH station up to several hundred meters from the base station.

Als Remote Radio Head wird im Mobilfunk die außentaugliche und wetterfeste Montage von Spannungsversorgung, Sende- und Empfangsbaugruppe, Endverstärker und Filter an den Antennen genannt. Die Kommunikation mit der Basisstation erfolgt meist über eine Glasfaserverbindung.The remote radio head in mobile radio is the outdoor and weatherproof installation of the power supply, transmitter and receiver module, power amplifier and filter on the antennas. Communication with the base station is usually via an optical fiber connection.

Der Aufbau von RRH-Mobilfunkanlagen mit abgesetzten Hochfrequenzsendern ist im Vergleich zu konventionell errichteten Mobilfunkanlagen bislang teurer,
weil eine Stromversorgungsleitung und eine Datenleitung installiert werden müssen. Die Wirtschaftlichkeit ist bisher erst bei größeren Kabellängen gegeben. Eine RRH-Mobilfunkanlage hat gegenüber einer konventionell errichteten Mobilfunkanlage jedoch im laufenden Betrieb deutliche Kostenvorteile.Up to now, the construction of RRH mobile radio systems with remote radio frequency transmitters has been more expensive compared to conventionally installed mobile radio systems,
because a power line and a data line need to be installed. So far, economy has only been achieved with longer cable lengths. However, an RRH mobile radio system has significant cost advantages compared to a conventionally built mobile radio system.

Im Stand der Technik sind Kabel bekannt, in welchen mehrere Arten von Leitern kombiniert werden, um Installationskosten zu senken oder wenn besondere Schwierigkeiten zu überwinden sind.In the prior art, cables are known in which several types of conductors are combined in order to reduce installation costs or when special difficulties have to be overcome.

Aus der DE 20 2007010626 U1 ist eine Daten-Energie-Hybridleitung bekannt. Die Hybridleitung ist für Anwendungen in hochfrequent abgeschirmten Räumen vorgesehen und kombiniert elektrisch abgeschirmte Gleichspannungsleitungen mit potenzialfreien Lichtwellenleitern in einem Kabel. Aus der US 2003/0121694 A1 ist ein Kabel bekannt, in welchem eine Stromversorgungsleitung, eine Datenleitung und eine Steuererleichterung zu einem einzigen Kabel mit einem gemeinsamen Schutzmantel kombiniert sind.From the DE 20 2007010626 U1 a data-energy hybrid line is known. The hybrid cable is intended for applications in high-frequency shielded rooms and combines electrically shielded DC voltage cables with potential-free optical fibers in one cable. From the US 2003/0121694 A1 a cable is known in which a power supply line, a data line and a control facility are combined to form a single cable with a common protective sheath.

Die EP 1 391 897 A1 offenbart ein Koaxialkabel mit einer innenliegenden optischen Faser und einen zugehörigen zweiteiligen Stecker.The EP 1 391 897 A1 discloses a coaxial cable with an internal optical fiber and an associated two-part connector.

Die US 5, 574, 815 offenbart ein Kommunikationskabel bestehend aus einem Koaxialkabel mit einer innenliegenden optischen Faser.The US 5, 574, 815 discloses a communication cable consisting of a coaxial cable with an internal optical fiber.

Die US 4,896, 939 offenbart ein Kommunikationskabel bestehend aus einem Koaxialkabel mit einer innenliegenden optischen Faser.The US 4,896,939 discloses a communication cable consisting of a coaxial cable with an internal optical fiber.

Die aus dem Stand der Technik bekannten Kabel sind jedoch nicht dazu geeignet, um die Umrüstung von bestehenden Mobilfunkstationen auf die moderne RRH Technologie zu erleichtern.However, the cables known from the prior art are not suitable for facilitating the conversion from existing mobile radio stations to the modern RRH technology.

Darstellung der ErfindungPresentation of the invention

Hiervon ausgehend ist es eine Aufgabe der vorliegenden Erfindung, die Wirtschaftlichkeitsgrenze für RRH-Mobilfunkanlagen zu senken.Based on this, it is an object of the present invention to lower the economic limit for RRH mobile radio systems.

Um diese Aufgabe zu lösen, schlägt die Erfindung ein Verfahren zur Umrüsten einer Mobilfunkstation mittels eines Hybridkabels-vor. Insbesondere schlägt die Erfindung ein solches Verfahren nach Anspruch 1 vor.To achieve this object, the invention proposes a method for converting a mobile radio station using a hybrid cable. In particular, the invention proposes such a method according to claim 1.

Das Hybridkabel umfasst ein Koaxialkabel mit einem Außenleiter und einem hohlen Innenleiter, der einen Innenraum umschließt. Das Hybridkabel zeichnet sich dadurch aus, dass im Innenraum des Innenleiters eine Datenleitung angeordnet ist.The hybrid cable comprises a coaxial cable with an outer conductor and a hollow inner conductor that encloses an interior. The hybrid cable is characterized in that a data line is arranged in the interior of the inner conductor.

Die Datenleitung ist als optische und/oder elektrische Datenleitung ausgebildet. Das Hybridkabel dient zur Stromversorgung und zum Datenaustausch.The data line is designed as an optical and / or electrical data line. The hybrid cable is used for power supply and data exchange.

Die Erfindung schafft eine mögliche wirtschaftliche Umrüstung für Mobilfunkanlagen.The invention creates a possible economical retrofitting for mobile radio systems.

Um diese Aufgabe zu lösen, schlägt die Erfindung ein Verfahren gemäß Anspruch 1 vor.To achieve this object, the invention proposes a method according to claim 1.

In einer Ausführungsform der Erfindung ist die Datenquelle als Basisstation ausgebildet.In one embodiment of the invention, the data source is designed as a base station.

Das Verfahren ermöglicht es, eine RRH-Mobilfunkanlage zu schaffen, die gegenüber bekannten RRH-Mobilfunkanlage wirtschaftlicher ist.The method makes it possible to create an RRH mobile radio system which is more economical than known RRH mobile radio systems.

Die Mobilfunkstation weist einen antennennahen Hochfrequenzsender und ein Koaxialkabel auf, wobei das Koaxialkabel einen hohlen Innenleiter aufweist, wobei eine elektrische oder optische Datenleitung nachträglich in den hohlen Innenleiter des Koaxialkabels zur Verbindung des antennennahen Hochfrequenzsenders mit einer Datenquelle eingezogen ist, wobei der Innenleiter und ein Außenleiters des Koaxialkabels mit einer Stromversorgung verbindbar sind und der Innenleiter und der Außenleiter mit dem antennennahen Hochfrequenzsender verbindbar sind.The mobile radio station has a radio-frequency transmitter close to the antenna and a coaxial cable, the coaxial cable having a hollow inner conductor, an electrical or optical data line subsequently being drawn into the hollow inner conductor of the coaxial cable for connecting the radio-frequency transmitter close to the antenna to a data source, the inner conductor and an outer conductor of the Coaxial cables can be connected to a power supply and the inner conductor and the outer conductor can be connected to the radio-frequency transmitter close to the antenna.

Die zuvor genannten und weitere Vorteile, Besonderheiten und zweckmäßige Weiterbildungen der Erfindung werden auch anhand der Ausführungsbeispiele deutlich, die nachfolgend unter Bezugnahme auf die Figuren beschrieben werden.The above-mentioned and other advantages, special features and expedient developments of the invention also become clear on the basis of the exemplary embodiments which are described below with reference to the figures.

Kurze Beschreibung der FigurenBrief description of the figures

Von den Figuren zeigt:

Fig. 1
eine schematische Darstellung einer RRH-Mobilfunkanlage;
Fig. 2
eine schematische und perspektivische Querschnittsansicht eines erfindungsgemäßen Hybridkabels; und
Fig. 3
einen Verfahrensschritt zur Herstellung eines erfindungsgemäßen Hybridkabels in einer schematischen Darstellung.
From the figures shows:
Fig. 1
a schematic representation of an RRH mobile radio system;
Fig. 2
is a schematic and perspective cross-sectional view of a hybrid cable according to the invention; and
Fig. 3
a process step for producing a hybrid cable according to the invention in a schematic representation.

Beschreibung eines Ausführungsbeispiels der ErfindungDescription of an embodiment of the invention

In Fig. 1 ist schematisch eine Mobilfunkanlage dargestellt, die in einem hohen Gebäude 101 untergebracht ist. Auf einem Dach 102 des Gebäudes 101 steht ein Mast 103, an welchem mehrere Antennen 104 installiert sind. In unmittelbarer Nachbarschaft der Antennen 104 ist ein Hochfrequenzsender 105 auf dem Mast 103 angeordnet. Der Hochfrequenzsender 105 wird auch als Remote Radio Head (RRH) 105 bezeichnet. Im unteren Bereich des Gebäudes 101, zum Beispiel im Keller oder im Erdgeschoss, ist eine Stromversorgung 106 der Anlage angeordnet. Neben der Stromversorgung 106 ist als Datenquelle_eine so genannte Basisstation 107 mit einem Radioserver untergebracht. Die Basisstation 107 ist mit der RRH 105 über eine Datenleitung 108 zum Zweck des Datenaustausches signalmäßig verbunden. Typischerweise ist die Datenleitung 108 ein optisches Datenkabel zur Übertragung von optischen Daten. Von der Stromversorgung 106 führt weiterhin eine Stromleitung 109 zu der RRH 105. Bei der Stromleitung 109 handelt es sich typischerweise um einen 48-Volt-Stromanschluss. In herkömmlicher Weise ist zwischen der Stromversorgung 106 und der RRH 105 ein Sicherungskasten 110 angeordnet.In Fig. 1 a mobile radio system is schematically shown, which is housed in a high building 101. A mast 103, on which a plurality of antennas 104 are installed, stands on a roof 102 of the building 101. A radio-frequency transmitter 105 is arranged on the mast 103 in the immediate vicinity of the antennas 104. The radio frequency transmitter 105 is also referred to as a remote radio head (RRH) 105. A power supply 106 of the system is arranged in the lower area of the building 101, for example in the basement or on the ground floor. In addition to the power supply 106, a so-called base station 107 with a radio server is accommodated as the data source. The base station 107 is connected to the RRH 105 via a data line 108 for the purpose of data exchange. Typically, data line 108 is an optical data cable for the transmission of optical data. A power line 109 continues from the power supply 106 to the RRH 105. The power line 109 is typically a 48 volt power connection. In a conventional manner, a fuse box 110 is arranged between the power supply 106 and the RRH 105.

Alternativ zu dem in Fig. 1 gezeigten Ausführungsbeispiel der Mobilfunkanlage kann die Mobilfunkanlage auch in einem Turm oder auf einem hohen Mast installiert sein.Alternatively to that in Fig. 1 The embodiment of the mobile radio system shown can also be installed in a tower or on a high mast.

Im Unterschied zu der in Fig. 1 gezeigten Mobilfunkstation befindet sich bei herkömmlichen Mobilfunkanlagen, die nicht mit einem RRH 105 ausgerüstet sind, der Hochfrequenzsender im unteren Bereich des Gebäudes oder am Fuße eines Mastes, auf dem die Antennen 104 der Mobilfunkanlage angeordnet sind. Bei den herkömmlichen Mobilfunkanlagen ist der Hochfrequenzsender mit den Antennen nur über Koaxialkabel verbunden.Unlike the one in Fig. 1 In conventional mobile radio systems that are not equipped with an RRH 105, the mobile radio station shown is the high-frequency transmitter in the lower area of the building or at the foot of a mast on which the antennas 104 of the mobile radio system are arranged. In conventional mobile radio systems, the high-frequency transmitter is only connected to the antennas via coaxial cables.

Zusätzlich zu den bisher an Mobilfunkstandorten verlegten Koaxialkabeln ist deshalb bei RRH-Mobilfunkanlagen die Verlegung zusätzlicher optischer Kabel für die Errichtung von Mobilfunkanlagen der neuen Generation erforderlich. Außerdem ist das Verlegen eines 48-Volt-Stromanschlusses zur Speisung der antennennahen Remote Radio Heads notwendig.In addition to the coaxial cables previously installed at mobile radio sites, the installation of additional optical cables is therefore required for the construction of new generation mobile radio systems. It is also necessary to lay a 48-volt power connection to feed the remote radio heads close to the antenna.

Beim Neubau oder der Modernisierung einer Mobilfunkanlage musste deshalb bisher eine separate Datenleitung sowie ein Kabel zur Stromversorgung der RRH verlegt werden. Das hat zur Folge, dass kostenintensive Arbeiten an den Kabelwegen durchzuführen sind, insbesondere in Bezug auf Brandschutz, eine Erweiterung der Wanddurchführung usw., so dass RRH-Anlagen heute erst bei größeren Kabellängen wirtschaftlich sind.Up to now, when building or modernizing a mobile radio system, a separate data line and a cable for power supply to the RRH had to be installed. The consequence of this is that costly work has to be carried out on the cable routes, in particular with regard to fire protection, an extension of the wall duct, etc., so that RRH systems are only economical today with longer cable lengths.

An dieser Stelle setzt die Erfindung an, um Abhilfe zu schaffen. Die Erfindung schlägt vor, das vorhandene Koaxialkabel sowohl auf eine andere als auch zusätzlich dazu auf eine neue Art und Weise zu nutzen.This is where the invention comes in to remedy the situation. The invention proposes to use the existing coaxial cable both in a different and in addition to it in a new way.

Fig. 2 zeigt ein Koaxialkabel 201, wie es aus dem Stand der Technik bekannt ist. Von innen nach außen weist das Koaxialkabel 201 einen Innenleiter 202 aus Kupfer auf, der hohl ausgebildet ist und einen Innenraum umschließt. Der Innenleiter 202 ist von einem Dielektrikum 203 umgeben. Das Dielektrikum 203 wird von einem Außenleiter 204 umschlossen, der von einem Schutzmantel 205 isoliert und gegen äußere Beschädigungen geschützt ist. Fig. 2 shows a coaxial cable 201, as is known from the prior art. From the inside out, the coaxial cable 201 has an inner conductor 202 made of copper, which is hollow and surrounds an interior. The inner conductor 202 is surrounded by a dielectric 203. The dielectric 203 is enclosed by an outer conductor 204, which is insulated by a protective jacket 205 and is protected against external damage.

Bei herkömmlichen Mobilfunkanlagen besitzt das Hochfrequenzkabel, welches den Hochfrequenzsender mit den Antennen verbindet, ab einem Durchmesser von 7/8" (2,2cm) einen hohlen Kupferinnnenleiter. Die Erfindung schlägt vor, die Datenleitung 108 im hohlen Innenleiter 202 des Koaxialkabels 201 zu verlegen. Das bereits in der Mobilfunkanlage verlegte Antennenkabel 201 wird somit gewissermaßen als Leerrohr für das Verlegen der für den RRH 105 erforderlichen Datenleitung 108 benutzt.In conventional mobile radio systems, the high-frequency cable which connects the high-frequency transmitter to the antennas has a hollow copper inner conductor from a diameter of 7/8 "(2.2 cm). The invention proposes to lay the data line 108 in the hollow inner conductor 202 of the coaxial cable 201. The antenna cable 201 already installed in the mobile radio system is thus used to a certain extent as an empty conduit for laying the data line 108 required for the RRH 105.

Diese Vorgehensweise bei der Umrüstung von bereits bestehenden Mobilfunkstationen auf die neue RRH-Technologie weist eine Reihe von Vorteilen auf. Hierzu gehören insbesondere eine vereinfachte Installation und hierdurch ermöglichte Kosteneinsparungen, weil kein neuer Kabelweg gebaut werden muss. Es wird beispielsweise vermieden, dass neue Wanddurchführungen geschaffen werden müssen. Weiterhin muss die zusätzliche Datenleitung 108 nicht geschellt werden. Es sind auch keine zusätzlichen Maßnahmen in Bezug auf den Brandschutz notwendig. Schließlich sind die sensiblen Datenleitungen 108 im Inneren des Koaxialkabels 201 sehr gut gegen äußere Einwirkungen geschützt, beispielsweise auch gegen Angriffe von Nagetieren.This procedure when converting existing mobile radio stations to the new RRH technology has a number of advantages. This includes, in particular, a simplified installation and the resulting cost savings, because no new cable route has to be built. For example, it is avoided that new wall ducts have to be created. Furthermore, the additional data line 108 does not have to be ringed. No additional fire protection measures are necessary. Finally, the sensitive data lines 108 inside the coaxial cable 201 are very well protected against external influences, for example also against attacks by rodents.

Das Koaxialkabel 201 ist darüber hinaus zusätzlich als Stromkabel 109 zur 48 V Stromversorgung des RRH 105 nutzbar, indem der Innenleiter 202 und der Außenleiter 204 an die entsprechenden Anschlüsse der Stromversorgung 106 und des RRH 105 angeschlossen werden.In addition, the coaxial cable 201 can also be used as a power cable 109 for the 48 V power supply of the RRH 105 by connecting the inner conductor 202 and the outer conductor 204 to the corresponding connections of the power supply 106 and the RRH 105.

In Fig. 3 ist veranschaulicht, wie in ein Koaxialkabel 201 ein Datenkabel 108 eingezogen wird. Ganz entsprechend wie bei einer herkömmlichen Leerrohrinstallation wird z.B. mit einer Rohrspirale 301 die Datenleitung 108 in den Hohlraum des Innenleiters 202 einbezogen.In Fig. 3 illustrates how a data cable 108 is pulled into a coaxial cable 201. Just as in a conventional empty pipe installation, the data line 108 is incorporated into the cavity of the inner conductor 202, for example with a pipe spiral 301.

Durch die vorgeschlagene Nutzung des bereits installierten Koaxialkabels 201 können vorhandene Mobilfunkstationen wesentlich kostengünstiger auf die neue RRH-Technologie umgerüstet werden.The proposed use of the already installed coaxial cable 201 means that existing mobile radio stations can be converted to the new RRH technology at a significantly lower cost.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

101101
Gebäudebuilding
102102
Dachtop, roof
103103
Mastmast
104104
Antennenantennas
105105
Remote Radio Head (RRH), HochfrequenzsenderRemote Radio Head (RRH), radio frequency transmitter
106106
Stromversorgungpower supply
107107
Datenquelle, BasisstationData source, base station
108108
Datenleitungdata line
109109
Stromleitungpower line
110110
Sicherungskastenfuse box
201201
Koaxialkabelcoaxial
202202
Innenleiterinner conductor
202202
hohler Innenleiterhollow inner conductor
203203
Dielektrikumdielectric
204204
Außenleiterouter conductor
205205
Schutzmantelmantle
301301
Rohrspiralepipe spiral

Claims (1)

  1. Method for refitting a mobile radio station, which comprises a high-frequency transmitter close to the antenna and a coaxial cable that comprises a hollow inner conductor, wherein the method comprises the following steps:
    - pulling an electric or optical data line (108) into the hollow inner conductor (202) of the already routed coaxial cable (201) by means of a pipe spiral, so that the coaxial cable (201) is used as an empty pipe for the laying of the electrical or optical data line (108);
    - connecting the high-frequency transmitter (105) close to the antenna with a base station (107) spatially separated from the high-frequency transmitter (105) close to the antenna, by means of the data line (108);
    - connecting an inner conductor (202) and an outer conductor (204) of the coaxial cable (201) with a power supply (106), and
    - connecting the inner conductor (202) and the outer conductor (204) with the high-frequency transmitter (105) close to the antenna.
EP09002654.3A 2008-02-25 2009-02-25 Radio base station and hybrid cable for a radio base station Active EP2093776B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008010929A DE102008010929A1 (en) 2008-02-25 2008-02-25 Mobile station and hybrid cable for a mobile station

Publications (3)

Publication Number Publication Date
EP2093776A2 EP2093776A2 (en) 2009-08-26
EP2093776A3 EP2093776A3 (en) 2013-05-15
EP2093776B1 true EP2093776B1 (en) 2020-01-15

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EP09002654.3A Active EP2093776B1 (en) 2008-02-25 2009-02-25 Radio base station and hybrid cable for a radio base station

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ZA (1) ZA200901312B (en)

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Also Published As

Publication number Publication date
EP2093776A3 (en) 2013-05-15
EP2093776A2 (en) 2009-08-26
DE102008064624A1 (en) 2009-10-01
DE202008005448U1 (en) 2008-08-07
ZA200901312B (en) 2010-02-24

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