EP0947108A2 - Base station for a radio telecommunications system - Google Patents

Base station for a radio telecommunications system

Info

Publication number
EP0947108A2
EP0947108A2 EP97951796A EP97951796A EP0947108A2 EP 0947108 A2 EP0947108 A2 EP 0947108A2 EP 97951796 A EP97951796 A EP 97951796A EP 97951796 A EP97951796 A EP 97951796A EP 0947108 A2 EP0947108 A2 EP 0947108A2
Authority
EP
European Patent Office
Prior art keywords
base station
transmitting
bts
trx2
receiving device
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.)
Withdrawn
Application number
EP97951796A
Other languages
German (de)
French (fr)
Inventor
Marcus Besson
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0947108A2 publication Critical patent/EP0947108A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1615—Switching on; Switching off, e.g. remotely
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Base station for a radio communication system
  • the invention relates to a base station for a radio communication system, a base station system and a mobile radio system with at least two transmitting and receiving devices.
  • Radio communication systems are formed, for example, by mobile radio systems, wireless telephony systems or by radio stations for wireless subscriber connection (RITL radio in the local loop).
  • Mobile radio systems enable the establishment of communication connections to mobile subscribers, while radio stations for wireless subscriber connection set up communication connections to stationary subscribers.
  • a network radio station is called a base station.
  • Time division multiplex Communication connections are established and maintained by transmitting signaling and user information via a radio interface. If several participants on the same carrier frequency of this radio interface are separated by different time slots, there is a time division multiplex system.
  • the time division multiplex method is also called TDMA (Time Division Multiple Access) method.
  • a well-known mobile radio system is, for example, the GSM (Global System for Mobile Communications) mobile radio network.
  • GSM Global System for Mobile Communications
  • other methods for separating the participants can also be used on the air interface.
  • a frequency division multiplex is also offered for the GSM mobile radio system.
  • specific codes can also be used for each communication connection.
  • a base station is a remote unit that is wired to other network components on the network side and that is connected to the terminal or another radio station via a radio interface. The power consumption of such a base station is 2 kW, for example. This value is largely independent of the actual traffic volume in a radio area covered by the base station.
  • the invention is based on the object of specifying a base station which, if appropriate, can be operated more economically in cooperation with other network components of a radio communication system. This object is achieved by the base station according to the features of claim 1, by the base station system according to the features of claim 7 and the mobile radio system according to the features of claim 9. Further developments of the invention can be found in the subclaims.
  • a base station for a radio communication system contains at least one transmitting and receiving device and at least one antenna device for the radio supply of communication connections to at least one remote station.
  • the base station also contains a control device for monitoring and organizing the transmitting and receiving device. This control device is designed such that it switches a transmitting and receiving device into an energy-saving mode as soon as this transmitting and receiving device does not supply any communication connections.
  • the base station can thus correspond to the strong fluctuations in the utilization of a radio communication system, for example a mobile radio network, and adapt its functionality in times of low traffic load. If a transmitting and receiving device does not supply any communication connections - this can be done by the control device with an appropriate organization - then switching to a energy saving mode, a lower energy consumption for the base station is possible. Further advantages result from a reduced cooling effort.
  • the costs of energy supply compared to the acquisition costs of a base station are becoming increasingly important for operators of a mobile radio network.
  • the base station according to the invention allows the operator of such a mobile radio network to save operating costs and to offer its services more economically.
  • switching off transmission equipment leads to a reduction in interference in the radio communication system and therefore possibly. to an improved speech quality.
  • a transmitting and receiving device is switched to the energy-saving mode as soon as the load on a remaining transmitting and receiving device is less than or equal to a threshold value.
  • This measure enables the base station to bring a transmitting and receiving device out of the energy-saving mode back to full functionality over a certain period of time.
  • the complete radio-technical supply of the communication link to remote stations remains guaranteed.
  • the security of the radio technical coverage is further increased by a transmitting and receiving device only when there is a replacement transmitting and receiving device for an organization. tion channel is switched to energy-saving mode.
  • the control device By monitoring and allocating communication connections to transmitting and receiving devices, the control device provides that a transmitting and receiving device for an organizational channel and a second transmitting and receiving device are constantly functional as a replacement for these, while further transmitting and receiving devices are in operation can be switched to energy-saving mode when traffic is low.
  • a further advantageous embodiment of the invention provides a base station with a cell sectoring, with the control device assigning at least one transmitting and receiving device to each sector.
  • the transmitting and receiving device which has the largest coverage area, is preferably switched to the energy-saving mode. This is particularly advantageous if a transmitting and receiving device can be switched on for several or all sectors of a cell.
  • a transmission and reception device that is additionally assigned to the sector or sectors in the event of particular traffic peaks is preferably switched off when the traffic load decreases. This design makes it possible to reduce overload peaks for base stations without the need for transmitting and receiving devices with constant maximum energy consumption.
  • the energy-saving mode can be designed in such a way that all functions of the base station, with the exception of a controller for restarting the base station, are switched off. This is particularly important if the base station is a base station for a so-called microcell, that is, a small cell that is located within a larger cell (hierarchical cell structures). Such microcells are needed to increase capacity, but this increase in capacity is only necessary during peak periods.
  • this base station can be completely switched off using, for example, only one transmitting and receiving device.
  • the costs for a fixed line ("dialable ISDN") between the base station and a base station controller, which can be triggered in this case, may also be eliminated.
  • Such a base station for a microcell forms one with the base station for the larger cell (screen cell) Base station with at least two transmitting and receiving devices
  • the control device is formed, for example, by the base station controller.
  • a base station within a base station it can also be provided that only the functions of the transmission device are deactivated. These devices have a high energy consumption, so that switching them off is particularly advantageous.
  • devices for ventilation, signal processing, power supply and control as well as for reception can also be deactivated.
  • a base station system with at least one such base station also contains a base station controller connected to a plurality of base stations for organizing the radio technical coverage.
  • This base station controller distributes the communication connection in this way the transmitting and receiving devices of the base stations, that at least one transmitting and receiving device is switched to the energy-saving mode.
  • a base station controller can monitor and assess the radio conditions in several cells, so that an organization of the radio supply is possible beyond a base station and the largest possible number of transmitting and receiving devices can be switched to the energy-saving mode.
  • the largest possible number of communication connections is assigned to a transmitting and receiving device, which also realizes the organizational channel, according to a further embodiment of the base station system according to the invention.
  • a transmitting and receiving device By prioritizing this transmitting and receiving device when assigning a communication connection, other transmitting and receiving devices are released, the deactivation of which is not subject to any restrictions.
  • the radio communication system is designed as a mobile communication system and contains at least one mobile switching center which is connected to at least one base station system. Furthermore, the mobile radio system contains at least one operation and maintenance center, in which information about the utilization of transmission and reception devices of different base stations is evaluated and a threshold value is set in relation to the deactivation of further transmission and reception devices.
  • the threshold values can be set in such a way that cells with a large extension or with a high traffic capacity are first assigned to new communication connections and a renewed activation of Transmitting and receiving devices for microcells in hierarchical cell structures take place later.
  • FIG. 1 shows a block diagram of a mobile radio network
  • FIG. 2 shows a block diagram of a base station
  • FIG. 3 shows a block diagram of a base station system.
  • the mobile radio system shown in FIG. 1 is a known GSM mobile radio system in its components, which consists of a multiplicity of mobile switching centers MSC which are networked with one another or which provide access to a fixed network PSTN. Furthermore, these mobile switching centers MSC are each connected to at least one base station controller BSC.
  • Each base station controller BSC in turn enables a connection to at least one base station BTS.
  • a base station BTS is a radio station which can set up a message connection to mobile stations MS via a radio interface.
  • Such a radio connection to a mobile station MS is shown as an example in FIG.
  • An organization and maintenance center OMC is also associated with the mobile radio system, in which the configuration, the software, the performance parameters and the errors which occur are managed. To this end, the OMC operations and maintenance center receives error messages as well as reports on the operational and performance status of the components of the mobile radio system.
  • An operation and maintenance center OMC can manage the entire system or even only partial components of the mobile radio system. It is further assumed that the operation and maintenance center OMC shown in FIG. 1 is responsible for a base station system BSS, consisting of a base station controller BSC and several base stations BTS.
  • the radio interface between base station BTS and mobile station MS is organized according to the time-division multiplex method. For example, eight time slots are provided on a carrier frequency, which can be used for different communication connections and for organizing the radio interface. If a base station BTS also provides several carrier frequencies, there is also a frequency multiplex.
  • the base station BTS contains four transmitting and receiving devices TRX1 to TRX4, the transmitting and receiving devices TRX1 to TRX3 each being permanently connected to an antenna device A. Another transmitting and receiving device TRX4 can optionally be switched to one of the three antenna devices A.
  • the base station BTS also contains a control device SE for monitoring and organizing the transmitting and receiving devices
  • TRXl to TRX4 and central modules ZM The three antenna devices A each realize a sector within the cell that is supplied with radio technology by the base station BTS.
  • the control device SE optionally guided by information from the base station controller BSC, distributes the communication connections supplied by the base station BTS by means of a combining unit K to the transmitting and receiving devices TRX1 to TRX3 in such a way that the switchable transmitting and receiving devices TRX4 do not supply any communication connections.
  • a correspondingly low traffic load this applies particularly to the night hours or for the Weekend, this is possible, so that in consequence the sending and e mpfangs recognized TRX4 is switched to a power saving mode.
  • At least the transmission output stage is deactivated or switched to minimum power, but depending on the load of the remaining transmission and reception devices TRX1 to TRX3, additional devices such as the reception stage, signal processing, control, ventilation or power supply can also be switched off become.
  • a threshold value present in the base station controller BSC with respect to the load on the remaining transmitting and receiving devices TRX1 to TRX3 is queried. All transmitters and receivers TRX1 to TRX3 must fall below this threshold value, which is, for example, 70%, so that the unused transmitters and receivers TRX4 can be switched to the energy-saving mode.
  • the threshold only applies to one transmitter and receiver device TRX. In this case, the threshold should be raised somewhat, for example to 80% (trunking effect).
  • FIG. 3 shows a base station system BSS, which consists of a base station controller BSC, which is connected to and controls two base stations BTS, for example.
  • a base station controller BSC which is connected to and controls two base stations BTS, for example.
  • the base station system BSS one of the base stations BTS realizes a so-called umbrella cell of larger size, while the second base station BTS is inside this umbrella cell realized a micro cell.
  • the base station controller BSC strives to concentrate communication connections in the microcell, since this microcell causes less interference in the mobile radio system in relation to a communication connection. This can increase the overall capacity of the network.
  • the communication link is preferably assigned to the base station BTS that realizes the umbrella cell, so that the second base station BTS transmitting and receiving devices TRX1 can be switched to the energy-saving mode.
  • the energy-saving mode means that all functions are switched off. Exceptions to this are a device for preheating and functions of the control device SE which remain functional in order to enable the base station BTS to start up quickly.
  • the modules affected by the energy-saving mode on the BTS base station can be set individually, depending on the configuration of the BTS base station. Details on the design of a base station BTS can be found in Siemens AG, product information leaflet, "AirXpress D900 / D1800 Mobile Network Base Station Equipment", February 1996.
  • the threshold values with regard to the utilization of transmitters and receivers TRX1, TRX2 and the scope of the energy-saving mode are set by an operation and maintenance center OMC of the mobile radio system. This setting can be made individually for each base station BTS or each transmitting and receiving device TRX1 to TRX3.
  • the operation and maintenance center OMC also evaluates the data of the individual base stations BTS in such a way that a permanent radio supply is ensured over the entire extension of the mobile radio network and replacement and switchover mechanisms are controlled for the failure of individual transmitting and receiving devices.
  • the radio communication system can also be designed as a wireless subscriber line with base stations.
  • the remote station is not a mobile station, but a second radio station. Both the radio station of the subscriber line and the radio station which is wired on the network side can be designed in accordance with the invention.
  • the communication connections between the base stations BTS and the base station controller BSC can be designed as point-to-multipoint directional radio links, via which the transmitting and receiving devices can be switched to the energy-saving mode.
  • a radio-based connection of the base stations BTS to the one between the base stations BTS and the base station controller BSC has the advantage of being flexible and inexpensive - e.g. over existing radio links - to use the replacement and switching mechanisms according to the invention wirelessly.
  • the large fluctuations in the traffic load of a radio communication system can be better and more economically met by appropriate measures for organizing the communication connections on the transmitting and receiving devices and switching to the energy-saving mode.
  • transmitters and receivers TRX1, TRX2 are also advantageous in the event of a power supply failure, since by temporarily deactivating transmitters and receivers TRXl, TRX2 the emergency power supply by a battery is possible over a longer period of time, the total failure of the corresponding cell becomes delayed.
  • Switching off a transmitting and receiving device TRX1, TRX2 or an entire base station BTS after prior redistribution of the communication connections also enables maintenance of the corresponding devices. To this

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed is a base station for a radio telecommunications systems, specially for a mobile radio telephone network. Said base station comprises at least two receiver and transmitter devices and at least one antenna device for ensuring radio communication links with at least one remote station. A control device of the base station organizes monitoring of the receiver and transmitter devices in such a way that one of the transmitter and receiver devices is switched to energy-saving mode once it is not establishing a telecommunications connection.

Description

Beschreibungdescription
Basisstation für ein Funk-KommunikationssystemBase station for a radio communication system
Die Erfindung betrifft eine Basisstation für ein Funk-Kommunikationssystem, ein Basisstationssystem und ein Mobilfunksystem mit zumindest zwei Sende- und Empfangseinrichtungen.The invention relates to a base station for a radio communication system, a base station system and a mobile radio system with at least two transmitting and receiving devices.
Funk-Kommunikationssysteme werden beispielsweise durch Mo- bilfunksysteme, Drahtlos-Telefoniesysteme oder durch Funkstationen zum drahtlosen Teilnehmeranschluß (RITL radio in the local loop) gebildet. Mobilfunksysteme ermöglichen den Aufbau von Kommunikationsverbindungen zu mobilen Teilnehmern, währenddessen Funkstationen zum drahtlosen Teilnehmeranschluß Kommunikationsverbindungen zu stationären Teilnehmern aufbauen. Eine netzseitige Funkstation wird als Basisstation bezeichnet .Radio communication systems are formed, for example, by mobile radio systems, wireless telephony systems or by radio stations for wireless subscriber connection (RITL radio in the local loop). Mobile radio systems enable the establishment of communication connections to mobile subscribers, while radio stations for wireless subscriber connection set up communication connections to stationary subscribers. A network radio station is called a base station.
Kommunikationsvrbindungen werden aufgebaut und unterhalten, indem Signalisierungs- und Nutzinformationen über eine Funkschnittstelle übertragen werden. Sind mehrere Teilnehmer auf der gleichen Trägerfrequenz dieser Funkschnittstelle durch unterschiedliche Zeitlagen getrennt, liegt ein Zeitmultiplex- system vor. Das Zeitmultiplexverfahren wird auch TDMA (Time Division Multiple Access) -Verfahren genannt.Communication connections are established and maintained by transmitting signaling and user information via a radio interface. If several participants on the same carrier frequency of this radio interface are separated by different time slots, there is a time division multiplex system. The time division multiplex method is also called TDMA (Time Division Multiple Access) method.
Ein bekanntes Mobilfunksystem ist beispielsweise das GSM (Global System for Mobile Communications) -Mobilfunknetz . Zusätzlich zum Zeitmultiplex können auf der Luftschnittstelle auch weitere Verfahren zum Separieren der Teilnehmer angewandt werden. Beim GSM-Mobilfunksystem wird zusätzlich ein Frequenzmultiplex angeboten. Alternativ oder zusätzlich zu den genannten Verfahren zur Teilnehmerseparierung können auch für jede Kommunikationsverbindung spezifische Codes einge- setzt werden. Eine Basisstation ist eine abgesetzte Einheit, die netzseitig drahtgebunden mit anderen Netzkomponenten verbunden ist, und die über eine Funkschnittstelle mit dem Endgerät bzw. einer anderen Funkstation verbunden ist. Die Leistungsaufnahme ei- ner solchen Basisstation beträgt beispielsweise 2 kW. Dieser Wert ist weitgehend unabhängig vom tatsächlichen Verkehrsaufkommen in einem durch die Basisstation versorgten Funkbereich.A well-known mobile radio system is, for example, the GSM (Global System for Mobile Communications) mobile radio network. In addition to time-division multiplexing, other methods for separating the participants can also be used on the air interface. A frequency division multiplex is also offered for the GSM mobile radio system. As an alternative or in addition to the aforementioned methods for subscriber separation, specific codes can also be used for each communication connection. A base station is a remote unit that is wired to other network components on the network side and that is connected to the terminal or another radio station via a radio interface. The power consumption of such a base station is 2 kW, for example. This value is largely independent of the actual traffic volume in a radio area covered by the base station.
Der Erfindung liegt die Aufgabe zugrunde, eine Basisstation anzugeben, die gegebenenfalls im Zusammenwirken mit anderen Netzkomponenten eines Funk-Kommunikationssystems, wirtschaftlicher betrieben werden kann. Diese Aufgabe wird durch die Basisstation nach den Merkmalen des Patentanspruches 1, durch das Basisstationssystem nach den Merkmalen des Patentanspruches 7 und das Mobilfunksystem nach den Merkmalen des Patentanspruches 9 gelöst. Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.The invention is based on the object of specifying a base station which, if appropriate, can be operated more economically in cooperation with other network components of a radio communication system. This object is achieved by the base station according to the features of claim 1, by the base station system according to the features of claim 7 and the mobile radio system according to the features of claim 9. Further developments of the invention can be found in the subclaims.
Eine Basisstation für ein Funk-Kommunikationssystem enthält mindestens eine Sende- und Empfangseinrichtung und zumindest eine Antenneneinrichtung zur funktechnischen Versorgung von Kommunikationsverbindungen zu mindestens einer Gegenstation. Weiterhin enthält die Basisstation eine Steuereinrichtung zur Überwachung und Organisation der Sende- und Empfangseinrichtung. Diese Steuereinrichtung ist derart ausgebildet, dass sie eine Sende- und Empfangseinrichtung in einen Energiesparmodus schaltet, sobald diese Sende- und Empfangseinrichtung keine Kommunikationsverbindungen versorgt .A base station for a radio communication system contains at least one transmitting and receiving device and at least one antenna device for the radio supply of communication connections to at least one remote station. The base station also contains a control device for monitoring and organizing the transmitting and receiving device. This control device is designed such that it switches a transmitting and receiving device into an energy-saving mode as soon as this transmitting and receiving device does not supply any communication connections.
Die Basisstation kann damit den starken Auslastungsschwankun- gen eines Funk-Kommunikationssystemes, z.B. eines Mobilfunknetzes, entsprechen und ihre Funktionalität in Zeiten geringer Verkehrsbelastung anpassen. Versorgt eine Sende- und E p- fangseinrichtung keine Kommunikationsverbindungen - dies kann durch die Steuereinrichtung mit einer entsprechenden Organisation bewirkt werden -, dann wird durch das Schalten in ei- nen Energiesparmodus ein geringerer Energieverbrauch für die Basisstation möglich. Weitere Vorteile ergeben sich aus einem reduzierten Kühlaufwand.The base station can thus correspond to the strong fluctuations in the utilization of a radio communication system, for example a mobile radio network, and adapt its functionality in times of low traffic load. If a transmitting and receiving device does not supply any communication connections - this can be done by the control device with an appropriate organization - then switching to a energy saving mode, a lower energy consumption for the base station is possible. Further advantages result from a reduced cooling effort.
Die Kosten für die Energieversorgung im Vergleich zu den An- schaffungskosten einer Basisstation gewinnen für Betreiber eines Mobilfunknetzes eine immer höhere Wertigkeit. Die erfindungsgemäße Basisstation erlaubt dem Betreiber eines solchen Mobilfunknetzes, Betriebskosten zu sparen und seine Dienste wirtschaftlicher anzubieten. Ebenso führt das Abschalten von Sendeeinrichtungen zu einer Verringerung von Interferenzen im Funk-Kommunikationssystem und dadurch u.U. zu einer verbesserten Sprachqualität.The costs of energy supply compared to the acquisition costs of a base station are becoming increasingly important for operators of a mobile radio network. The base station according to the invention allows the operator of such a mobile radio network to save operating costs and to offer its services more economically. Likewise, switching off transmission equipment leads to a reduction in interference in the radio communication system and therefore possibly. to an improved speech quality.
Entsprechend einer Weiterbildung der Erfindung wird eine Sende- und Empfangseinrichtung in den Energiesparmodus geschalten, sobald die Auslastung einer verbleibenden Sende- und Empfangseinrichtung kleiner oder gleich einem Schwellwert ist. Durch diese Weiterbildung wird berücksichtigt, dass sich die Auslastung einer Basisstation sehr schnell ändern kann und deshalb auf einer verbleibenden, nicht abgeschaltenen Sende- und Empfangseinrichtung zumindest eine zusätzliche Kommunikationsverbindung versorgbar sein sollte, ohne dass die in den Energiesparmodus geschaltene Sende- und Empfangs- einrichtung dafür benötigt wird.According to a development of the invention, a transmitting and receiving device is switched to the energy-saving mode as soon as the load on a remaining transmitting and receiving device is less than or equal to a threshold value. This development takes into account that the load on a base station can change very quickly and therefore at least one additional communication link should be able to be supplied on a remaining, not switched off transmission and reception device, without the transmission and reception device switched to the energy-saving mode for this purpose is needed.
Durch diese Maßnahme ist es der Basisstation möglich, eine Sende- und Empfangseinrichtung über eine gewisse Zeitspanne aus dem Energiesparmodus zurück zur vollen Funktionalität zu führen. Die vollständige funktechnische Versorgung von Kommunikationsverbindung zu Gegenstationen bleibt dabei gewährleistet .This measure enables the base station to bring a transmitting and receiving device out of the energy-saving mode back to full functionality over a certain period of time. The complete radio-technical supply of the communication link to remote stations remains guaranteed.
Entsprechend einer weiteren Ausprägung der Erfindung wird die Sicherheit der funktechnischen Versorgung weiter erhöht, indem eine Sende- und Empfangseinrichtung nur bei Vorliegen einer Ersatz-Sende- und Empfangseinrichtung für einen Organisa- tionskanal in den Energiesparmodus geschalten wird. Die Steuereinrichtung sieht durch eine Überwachung und ein Allokie- rung von Kommunikationsverbindungen auf Sende- und Empfangseinrichtungen vor, dass ständig eine Sende- und Empfangseinrichtung für einen Organisationskanal und eine zweite Sende- und Empfangseinrichtung als Ersatz für diese funktionsfähig sind, währenddessen weitere Sende- und Empfangseinrichtungen bei entsprechend geringer Verkehrsbelastung in den Energiesparmodus geschalten werden.According to a further embodiment of the invention, the security of the radio technical coverage is further increased by a transmitting and receiving device only when there is a replacement transmitting and receiving device for an organization. tion channel is switched to energy-saving mode. By monitoring and allocating communication connections to transmitting and receiving devices, the control device provides that a transmitting and receiving device for an organizational channel and a second transmitting and receiving device are constantly functional as a replacement for these, while further transmitting and receiving devices are in operation can be switched to energy-saving mode when traffic is low.
Selbst bei einem plötzlichem Ausfall der Sende- und Empfangseinrichtung für den Organisationskanal wird durch Umschalten auf die Ersatz-Sende- und Empfangseinrichtung den Gegenstationen ständig ein Organisationskanal angeboten. Zusätzliche Sende- und Empfangseinrichtungen werden vorteilhafterweise nicht vollständig abgeschalten, sondern verbrauchen im Energiesparmodus ledig eine minimale Energie, die zum Vorwärmen und Aufrechterhaltungen von Steuereinheiten zum Anlaufen der Sende- und Empfangseinrichtung in wenigen Sekunden benötigt werden.Even in the event of a sudden failure of the transmitting and receiving device for the organization channel, an organization channel is constantly offered to the remote stations by switching over to the replacement transmitting and receiving device. Additional transmitters and receivers are advantageously not completely switched off, but instead only consume a minimal amount of energy in the energy-saving mode, which are required for preheating and maintaining control units for starting the transmitters and receivers in a few seconds.
Eine weitere vorteilhafte Ausprägung der Erfindung sieht eine Basisstation mit einer Zellensektorierung vor, wobei durch die Steuereinrichtung jedem Sektor zumindest eine Sende- und Empfangseinrichtung zugeordnet ist. Bevorzugt wird die Sende- und Empfangseinrichtung in den Energiesparmodus geschalten, die den größten Versorgungsbereich hat . Dies ist insbesondere von Vorteil, wenn eine Sende- und Empfangseinrichtung für mehrere oder alle Sektoren einer Zelle zugeschalten werden können. Im Gegensatz zu Sende- und Empfangseinrichtungen, die sektorgebunden sind, wird eine Sende- und Empfangseinrichtung, die bei besonderen Verkehrsspitzen dem Sektor oder den Sektoren zusätzlich zugeordnet wird, bei nachlassender Verkehrsbelastung bevorzugt abgeschalten. Durch diese Ausprägung ist es möglich, Überlastspitzen für Basisstationen abzubauen, ohne dass Sende- und Empfangseinrichtungen mit ständigem maximalen Energieverbrauch vorzusehen sind. Der Energiesparmodus kann derart ausgeprägt sein, dass alle Funktionen der Basisstation, bis auf eine Steuerung zum erneuten Anlaufen der Basisstation abgeschalten werden. Dies ist insbesondere von Bedeutung, wenn es sich bei der Basisstation um eine Basisstation für eine sogenannte Mikrozelle, also einer kleinen Zelle, die sich innerhalb einer größeren Zelle befindet (hierarchische Zellstrukturen) , ausgeprägt ist. Solche Mikrozellen werden zur Kapazitätserweiterung be- nötigt, doch ist diese Kapazitätserweiterung nur zu Spitzenbelastungszeiten nötig.A further advantageous embodiment of the invention provides a base station with a cell sectoring, with the control device assigning at least one transmitting and receiving device to each sector. The transmitting and receiving device, which has the largest coverage area, is preferably switched to the energy-saving mode. This is particularly advantageous if a transmitting and receiving device can be switched on for several or all sectors of a cell. In contrast to transmission and reception devices that are sector-specific, a transmission and reception device that is additionally assigned to the sector or sectors in the event of particular traffic peaks is preferably switched off when the traffic load decreases. This design makes it possible to reduce overload peaks for base stations without the need for transmitting and receiving devices with constant maximum energy consumption. The energy-saving mode can be designed in such a way that all functions of the base station, with the exception of a controller for restarting the base station, are switched off. This is particularly important if the base station is a base station for a so-called microcell, that is, a small cell that is located within a larger cell (hierarchical cell structures). Such microcells are needed to increase capacity, but this increase in capacity is only necessary during peak periods.
Ausserhalb dieser Spitzenbelastungszeiten kann diese Basisstation mit beispielsweise nur einer Sende- und Empfangsein- richtung völlig abgeschalten werden. Damit entfallen gegebenenfalls auch die Kosten für eine Festleitung („dialable ISDN") zwischen der Basisstation und einem Basisstationscontroller, die in diesem Fall ausgelöst werden kann. Eine solche Basisstation für eine Mikrozelle bildet mit der Basissta- tion für die größere Zelle (Schirmzelle) eine Basisstation mit zumindest zwei Sende- und Empfangseinrichtungen. Die Steuereinrichtung wird beispielsweise durch den Basisstation- scontroller gebildet.Outside of these peak load times, this base station can be completely switched off using, for example, only one transmitting and receiving device. The costs for a fixed line ("dialable ISDN") between the base station and a base station controller, which can be triggered in this case, may also be eliminated. Such a base station for a microcell forms one with the base station for the larger cell (screen cell) Base station with at least two transmitting and receiving devices The control device is formed, for example, by the base station controller.
Innerhalb einer Basisstation kann es jedoch auch vorgesehen sein, dass nur die Funktionen der Sendeeinrichtung deaktiviert werden. Diese Einrichtungen haben einen hohen Energieverbrauch, so dass deren Abschaltung besonders vorteilhaft ist. Zusätzlich zur Sendeeinrichtung können auch Einrichtun- gen zur Belüftung, zur Signalverarbeitung, zur Stromversorgung und zur Steuerung, sowie zum Empfang deaktiviert werden.However, within a base station it can also be provided that only the functions of the transmission device are deactivated. These devices have a high energy consumption, so that switching them off is particularly advantageous. In addition to the transmitting device, devices for ventilation, signal processing, power supply and control as well as for reception can also be deactivated.
Ein erfindungsgemäßes Basisstationssystem mit zumindest einer solchen Basisstation enthält weiterhin einen mit mehreren Ba- sisstationen verbundenen Basisstationscontroller zum Organisieren der funktechnischen Versorgung. Dieser Basisstations- controller verteilt die KommunikationsVerbindung derart auf die Sende- und Empfangseinrichtungen der Basisstationen, dass zumindest eine Sende- und Empfangseinrichtung in den Energiesparmodus geschalten wird. Ein Basisstationscontroller kann die Funkverhältnisse in mehreren Zellen überwachen und ein- schätzen, so dass über eine Basisstation hinaus eine Organisation der funktechnischen Versorgung möglich ist und eine möglichst große Anzahl von Sende- und Empfangseinrichtungen in den Energiesparmodus geschalten werden kann.A base station system according to the invention with at least one such base station also contains a base station controller connected to a plurality of base stations for organizing the radio technical coverage. This base station controller distributes the communication connection in this way the transmitting and receiving devices of the base stations, that at least one transmitting and receiving device is switched to the energy-saving mode. A base station controller can monitor and assess the radio conditions in several cells, so that an organization of the radio supply is possible beyond a base station and the largest possible number of transmitting and receiving devices can be switched to the energy-saving mode.
Um für jede Basisstation zumindest den Organisationskanal ständig anzubieten, wird nach einer weiteren Ausprägung des erfindungsgemäßen Basisstationssystems eine möglichst große Anzahl von Kommunikationsverbindungen einer Sende- und Empfangseinrichtung zugeordnet, die auch den Organisationskanal realisiert. In dem diese Sende- und Empfangseinrichtung bei der Zuteilung von Kommunikationsverbindung priorisiert wird, werden andere Sende- und Empfangseinrichtungen frei, deren Deaktivierung mit keinen Einschränkungen versehen ist .In order to continuously offer at least the organizational channel for each base station, the largest possible number of communication connections is assigned to a transmitting and receiving device, which also realizes the organizational channel, according to a further embodiment of the base station system according to the invention. By prioritizing this transmitting and receiving device when assigning a communication connection, other transmitting and receiving devices are released, the deactivation of which is not subject to any restrictions.
Gemäß einer Weiterbildung der Erfindung ist das Funk-Kommuni- kationsεystem als Mobil unkSystem ausgebildet und enthält zumindest eine Mobilvermittlungsstelle, die mit zumindest einem Basisstationssystem verbunden ist. Weiterhin enthält das Mobilfunksystem zumindest ein Operations- und WartungsZentrum, in dem Informationen über die Auslastung von Sende- und Empfangseinrichtungen verschiedener Basisstationen ausgewertet werden und jeweils ein Schwellwert bezüglich der Deaktivierung weiterer Sende- und Empfangseinrichtungen eingestellt wird.According to a development of the invention, the radio communication system is designed as a mobile communication system and contains at least one mobile switching center which is connected to at least one base station system. Furthermore, the mobile radio system contains at least one operation and maintenance center, in which information about the utilization of transmission and reception devices of different base stations is evaluated and a threshold value is set in relation to the deactivation of further transmission and reception devices.
Damit ist eine individuelle Einstellung für alle Basisstationen möglich, die jeweils den örtlichen Gegebenheiten für die Bestückung der Basisstationen und für die einzelnen Zellen genügt. Insbesondere können die Schwellwerte so eingestellt werden, dass neu aufzubauenden Kommunikationsverbindungen zuerst Zellen mit großer Ausdehnung bzw. mit hoher Verkehrskapazität zugeordnet werden und eine erneute Aktivierung von Sende- und Empfangseinrichtungen für Mikrozellen in hierarchischen Zellstrukturen später erfolgt.This enables an individual setting for all base stations, which in each case meets the local conditions for equipping the base stations and for the individual cells. In particular, the threshold values can be set in such a way that cells with a large extension or with a high traffic capacity are first assigned to new communication connections and a renewed activation of Transmitting and receiving devices for microcells in hierarchical cell structures take place later.
Die Erfindung wird bezugnehmend auf zeichnerische Darstellungen anhand von Ausführungsbeispielen näher erläutert.The invention is explained in more detail with reference to drawings using exemplary embodiments.
Dabei zeigenShow
FIG 1 ein Blockschaltbild eines Mobilfunknetzes,1 shows a block diagram of a mobile radio network,
FIG 2 ein Blockschaltbild einer Basisstation, und2 shows a block diagram of a base station, and
FIG 3 eine Blockschaltbild eines Basisstationssystems .3 shows a block diagram of a base station system.
Das in FIG 1 dargestellte Mobilfunksystem ist ein in seinen Komponenten bekanntes GSM-Mobilfunksystem, das aus einer Vielzahl von Mobilvermittlungsstellen MSC besteht, die untereinander vernetzt sind bzw. den Zugang zu einem Festnetz PSTN herstellen. Weiterhin sind diese Mobilvermittlungsstellen MSC mit jeweils zumindest einem Basisstationscontroller BSC verbunden.The mobile radio system shown in FIG. 1 is a known GSM mobile radio system in its components, which consists of a multiplicity of mobile switching centers MSC which are networked with one another or which provide access to a fixed network PSTN. Furthermore, these mobile switching centers MSC are each connected to at least one base station controller BSC.
Jeder Basisstationscontroller BSC ermöglicht wiederum eine Verbindung zu zumindest einer Basisstation BTS . Eine solche Basisstation BTS ist eine Funkstation, die über eine Funk- schnittstelle eine Nachrichtenverbindung zu Mobilstationen MS aufbauen kann. In FIG 1 ist beispielhaft eine solche Funkverbindung zu einer Mobilstation MS dargestellt.Each base station controller BSC in turn enables a connection to at least one base station BTS. Such a base station BTS is a radio station which can set up a message connection to mobile stations MS via a radio interface. Such a radio connection to a mobile station MS is shown as an example in FIG.
Zum Mobilfunksystem ist ferner ein Organisations- und Wartungszentrum OMC zugehörig, in dem eine Verwaltung der Konfiguration, der Software, der Leistungsparameter (Performance) , sowie eine Verwaltung der auftretenden Fehler vorgenommen wird. Dazu gehen im Operations- und Wartungszentrum OMC Feh- lermeldungen sowie Meldungen über Operations- und Leistungs- zustände der Komponenten des Mobilfunksystems ein. Ein Operations- und Wartungszentrum OMC kann das gesamte System oder auch nur Teilkomponenten des Mobilfunksystems verwalten. Im weiteren wird davon ausgegangen, daß das in FIG 1 geschilderte Operations- und Wartungszentrum OMC für ein Ba- sisstationssystem BSS, bestehend aus einem Basisstationscontroller BSC und mehreren Basisstationen BTS, zuständig ist .An organization and maintenance center OMC is also associated with the mobile radio system, in which the configuration, the software, the performance parameters and the errors which occur are managed. To this end, the OMC operations and maintenance center receives error messages as well as reports on the operational and performance status of the components of the mobile radio system. An operation and maintenance center OMC can manage the entire system or even only partial components of the mobile radio system. It is further assumed that the operation and maintenance center OMC shown in FIG. 1 is responsible for a base station system BSS, consisting of a base station controller BSC and several base stations BTS.
Die Funkschnittstelle zwischen Basisstation BTS und Mobil- Station MS ist nach dem Zeitmultiplexverfahren organisiert. Auf einer Trägerfrequenz werden so beispielhaft acht Zeitlagen bereitgestellt, die für verschiedene Kommunikations- verbindungen und zur Organisation der Funkschnittstelle benutzt werden können. Stellt eine Basisstation BTS auch mehre- re Trägerfrequenzen bereit, liegt zusätzlich ein Frequenz- multiplex vor.The radio interface between base station BTS and mobile station MS is organized according to the time-division multiplex method. For example, eight time slots are provided on a carrier frequency, which can be used for different communication connections and for organizing the radio interface. If a base station BTS also provides several carrier frequencies, there is also a frequency multiplex.
Die Basisstation BTS nach FIG 2 enthält vier Sende- und Empfangseinrichtungen TRXl bis TRX4, wobei die Sende- und Emp- fangseinrichtungen TRXl bis TRX3 jeweils fest mit einer Antenneneinrichtung A verbunden sind. Eine weitere Sende- und Empfangseinrichtung TRX4 kann wahlweise auf eine der drei Antenneneinrichtungen A geschalten werden. Weiterhin enthält die Basisstation BTS eine Steuereinrichtung SE zur Überwa- chung und Organisation der Sende- und EmpfangseinrichtungenThe base station BTS according to FIG. 2 contains four transmitting and receiving devices TRX1 to TRX4, the transmitting and receiving devices TRX1 to TRX3 each being permanently connected to an antenna device A. Another transmitting and receiving device TRX4 can optionally be switched to one of the three antenna devices A. The base station BTS also contains a control device SE for monitoring and organizing the transmitting and receiving devices
TRXl bis TRX4 und Zentralmodule ZM. Die drei Antenneneinrichtungen A realisieren jeweils einen Sektor innerhalb der durch die Basisstation BTS funktechnisch versorgten Zelle.TRXl to TRX4 and central modules ZM. The three antenna devices A each realize a sector within the cell that is supplied with radio technology by the base station BTS.
Die Steuereinrichtung SE, gegebenenfalls durch Informationen des Basisstationscontrollers BSC geführt, verteilt die durch die Basisstation BTS versorgten Kommunikationsverbindungen derart mittels einer Kombiniereinheit K auf die Sende- und Empfangseinrichtungen TRXl bis TRX3 , dass die schaltbare Sen- de- und Empfangseinrichtungen TRX4 keine Kommunikationsverbindungen versorgt. Bei entsprechend geringer Verkehrsbelastung, dies gilt besonders für die Nachtstunden oder für das Wochenende, ist dies möglich, so dass in Folge die Sende- und Empfangseinrichtung TRX4 in einen Energiesparmodus geschalten wird. Für den Energiesparmodus wird zumindest die Sendeendstufe deaktiviert bzw. auf Minimalleistung geschaltet, es können jedoch abhängig von der Auslastung der verbleibenden Sende- und Empfangseinrichtungen TRXl bis TRX3 auch zusätzliche Einrichtungen, wie die Empfangsstufe, die Signalverarbeitung, die Steuerung, die Entlüftung oder die Stromversorgung abgeschalten werden.The control device SE, optionally guided by information from the base station controller BSC, distributes the communication connections supplied by the base station BTS by means of a combining unit K to the transmitting and receiving devices TRX1 to TRX3 in such a way that the switchable transmitting and receiving devices TRX4 do not supply any communication connections. With a correspondingly low traffic load, this applies particularly to the night hours or for the Weekend, this is possible, so that in consequence the sending and e mpfangseinrichtung TRX4 is switched to a power saving mode. For the energy-saving mode, at least the transmission output stage is deactivated or switched to minimum power, but depending on the load of the remaining transmission and reception devices TRX1 to TRX3, additional devices such as the reception stage, signal processing, control, ventilation or power supply can also be switched off become.
Beim Schalten in den Energiesparmodus wird ein im Basisstationscontroller BSC vorliegender Schwellwert bezüglich der Auslastung der verbleibenden Sende- und Empfangseinrichtungen TRXl bis TRX3 abgefragt. Dieser Schwellwert, der beispiels- weise bei 70% liegt, muss von allen Sende- und Empfangseinrichtungen TRXl bis TRX3 für die momentane Auslastung unterschritten werden, damit die nicht genutzte Sende- und Empfangseinrichtung TRX4 in den Energiesparmodus geschalten werden kann .When switching to the energy-saving mode, a threshold value present in the base station controller BSC with respect to the load on the remaining transmitting and receiving devices TRX1 to TRX3 is queried. All transmitters and receivers TRX1 to TRX3 must fall below this threshold value, which is, for example, 70%, so that the unused transmitters and receivers TRX4 can be switched to the energy-saving mode.
Ist die Basisstation BTS nicht sektorisiert , sondern alle Sende- und Empfangseinrichtungen TRX versorgen eine rundum strahlende Antenneneinrichtung A bzw. die Basisstation BTS verfügt über viele Sende- und Empfangseinrichtungen TRX, so gilt der Schwellwert nur für eine Sende- und Empfangseinrichtung TRX. Der Schwellwert sollte in diesem Fall etwas heraufgesetzt werden, beispielsweise auf 80% (trunking effect) .If the base station BTS is not sectorized, but rather all transmitters and receivers TRX supply an all-round antenna device A or the base station BTS has many transmitters and receivers TRX, the threshold only applies to one transmitter and receiver device TRX. In this case, the threshold should be raised somewhat, for example to 80% (trunking effect).
Für die gesamte Zelle bzw. für jeden Sektor der Zelle wird ständig ein Organisationkanal angeboten, dessen Sende- und Empfangseinrichtung TRXl bis TRX3 nicht abgeschalten wird, selbst wenn keine Kommunikationsverbindung versorgt wird. Gegebenenfalls gilt dies auch für eine Ersatz-Sende- und Empfangseinrichtung TRX4 für diesen Organisationskanal (BCCH in GSM-Mobilfunknetzen) . In diesem Fall ist es günstig eine einem Sektor zugeteilte Sende- und Empfangseinrichtung für eine omnidirektionale Versorgung umzukonfigurieren. In FIG 3 ist ein Basiεstationssystem BSS gezeigt, das aus einem Basisstationscontroller BSC besteht, der mit beispielsweise zwei Basisstationen BTS verbunden ist und diese steu- ert. Im Basisstationssystem BSS realisiert eine der Basisstationen BTS eine sogenannte Schirmzelle größerer Ausdehnung, währenddessen die zweite Basisstation BTS innerhalb dieser Schirmzelle eine Mikrozelle realisiert.An organization channel is constantly offered for the entire cell or for each sector of the cell, the transmitting and receiving device TRX1 to TRX3 of which is not switched off, even if no communication link is supplied. If applicable, this also applies to a replacement transmitting and receiving device TRX4 for this organizational channel (BCCH in GSM mobile radio networks). In this case, it is favorable to reconfigure a transmitter and receiver device assigned to a sector for omnidirectional supply. FIG. 3 shows a base station system BSS, which consists of a base station controller BSC, which is connected to and controls two base stations BTS, for example. In the base station system BSS, one of the base stations BTS realizes a so-called umbrella cell of larger size, while the second base station BTS is inside this umbrella cell realized a micro cell.
In Zeiten hoher Verkehrsbelastung, wird durch den Basisstati- onscontroller BSC eine Konzentration von Kommunikationsverbindungen in der Mikrozelle angestrebt, da diese Mikrozelle bezogen auf eine Kommunikationsverbindung weniger Interferenzen im Mobilfunksystem hervorruft. Dadurch kann die Gesamtka- pazität des Netzes gesteigert werden.In times of high traffic load, the base station controller BSC strives to concentrate communication connections in the microcell, since this microcell causes less interference in the mobile radio system in relation to a communication connection. This can increase the overall capacity of the network.
In Zeiten geringer Verkehrsbelastung wird die Kommunikations- verbindung bevorzugt der die Schirmzelle realisierenden Basisstation BTS zugeteilt, so dass bei der zweiten Basisstati- on BTS Sende- und Empfangseinrichtungen TRXl in den Energiesparmodus geschalten werden können. Für diese Basisstation BTS bedeutet der Energiesparmodus, dass alle Funktionen abgeschalten werden. Davon ausgenommen sind eine Einrichtung zum Vorwärmen und Funktionen der Steuereinrichtung SE, die funk- tionsbereit bleiben, um ein schnelles Anlaufen der Basisstation BTS zu ermöglichen.In times of low traffic load, the communication link is preferably assigned to the base station BTS that realizes the umbrella cell, so that the second base station BTS transmitting and receiving devices TRX1 can be switched to the energy-saving mode. For this base station BTS, the energy-saving mode means that all functions are switched off. Exceptions to this are a device for preheating and functions of the control device SE which remain functional in order to enable the base station BTS to start up quickly.
Die vom Energiesparmodus betroffenen Baugruppen an der Basisstation BTS können je nach Konfiguration der Basisstation BTS individuell eingestellt werden. Einzelheiten zur Ausgestaltung einer Basisstation BTS können der Siemens AG, Produktinformationsschrift, „AirXpress D900/D1800 Mobile Network Base Station Equipment", Februar 1996, entnommen werden.The modules affected by the energy-saving mode on the BTS base station can be set individually, depending on the configuration of the BTS base station. Details on the design of a base station BTS can be found in Siemens AG, product information leaflet, "AirXpress D900 / D1800 Mobile Network Base Station Equipment", February 1996.
Die Schwellwerte bezüglich der Auslastung von Sende- und Empfangseinrichtungen TRXl, TRX2 und der Umfang des Energiesparmodus werden durch ein Operations- und WartungsZentrum OMC des Mobilfunksystems eingestellt. Diese Einstellung kann für jede Basisstation BTS bzw. jede Sende- und Empfangseinrichtung TRXl bis TRX3 individuell erfolgen. Das Operations- und Wartungszentrum OMC wertet die Daten der einzelnen Basisstationen BTS auch derart aus, dass über die gesamte Ausdehnung des Mobilfunknetzes eine ständige funktechnische Versorgung gesichert ist und für den Ausfall einzelner Sende- und Empfangseinrichtungen Ersatz- und Umschaltmechanismen gesteuert werden .The threshold values with regard to the utilization of transmitters and receivers TRX1, TRX2 and the scope of the energy-saving mode are set by an operation and maintenance center OMC of the mobile radio system. This setting can be made individually for each base station BTS or each transmitting and receiving device TRX1 to TRX3. The operation and maintenance center OMC also evaluates the data of the individual base stations BTS in such a way that a permanent radio supply is ensured over the entire extension of the mobile radio network and replacement and switchover mechanisms are controlled for the failure of individual transmitting and receiving devices.
Das Funk-Kommunikationssystem kann alternativ auch als drahtloser Teilnehmeranschluß mit Basisstationen ausgebildet sein. Die Gegenstelle ist in diesem Fall keine Mobilstation, sondern eine zweite Funkstation. Sowohl die Funkstation des Teilnehmeranschlusses, als auch die Funkstation, die netzsei- tig verkabelt ist, können erfindungsgemäß ausgestaltet sein. Außerdem können die Kommunikationsverbindungen zwischen den Basisstationen BTS und dem Basisstationscontroller BSC als Punkt-zu-Mehrpunkt-Richtfunkverbindungen ausgebildet sein, über die die Sende- und Empfangseinrichtungen in den Energie- sparmodus schaltbar sind. Eine funkgestützte Anbindung der Basisstationen BTS an den zwischen den Basisstationen BTS und dem Basisstationscontroller BSC hat den Vorteil, flexibel und kostengünstig - z.B. über bereits bestehende Richtfunkstrek- ken - die Ersatz- und Umschaltmechanismen gemäß der Erfindung auch drahtlos zu nutzen.Alternatively, the radio communication system can also be designed as a wireless subscriber line with base stations. In this case, the remote station is not a mobile station, but a second radio station. Both the radio station of the subscriber line and the radio station which is wired on the network side can be designed in accordance with the invention. In addition, the communication connections between the base stations BTS and the base station controller BSC can be designed as point-to-multipoint directional radio links, via which the transmitting and receiving devices can be switched to the energy-saving mode. A radio-based connection of the base stations BTS to the one between the base stations BTS and the base station controller BSC has the advantage of being flexible and inexpensive - e.g. over existing radio links - to use the replacement and switching mechanisms according to the invention wirelessly.
Durch eine erfindungsgemäße Basisstation kann den großen Schwankungen der Verkehrsbelastung eines Funk-Kommunikations- Systems durch entsprechende Maßnahmen zur Organisations der Kommunikationsverbindungen auf den Sende- und Empfangseinrichtungen und ein Schalten in den Energiesparmodus besser und wirtschaftlicher entsprochen werden.By means of a base station according to the invention, the large fluctuations in the traffic load of a radio communication system can be better and more economically met by appropriate measures for organizing the communication connections on the transmitting and receiving devices and switching to the energy-saving mode.
Durch das Deaktivieren von Sende- und Empfangseinrichtungen TRXl, TRX2 ist eine flexiblere Gestaltung der Netzplanung möglich, da eine für eine Sende- und Empfangseinrichtung TRXl, TRX2 zugeteilte Trägerfrequenz nach dem Abschalten in einer weiteren Zelle genutzt werden kann. Die Trägerfrequenzen können in Gebieten mit starker Verkehrsbelastung konzentriert werden.By deactivating the transmitters and receivers TRX1, TRX2, a more flexible design of the network planning is possible, since one for a transmitters and receivers TRX1, TRX2 assigned carrier frequency can be used in another cell after switching off. The carrier frequencies can be concentrated in areas with heavy traffic.
Das Umorganisieren von Sende- und Empfangseinrichtungen TRXl, TRX2 ist ebenso bei einem Stromversorungsausfall von Vorteil, da durch zeitiges Deaktivieren von Sende- und Empfangseinrichtungen TRXl, TRX2 die NotStromversorgung durch eine Bat- terie über einen längeren Zeitraum möglich ist, der Totalausfall der entsprechenden Zelle wird hinausgezögert . Die Abschaltung einer Sende- und Empfangseinrichtung TRXl, TRX2 oder einer gesamten Basisstation BTS nach vorhergehender Umverteilung der Kommunikationsverbindungen ermöglicht ebenso eine Wartung der entsprechenden Einrichtungen. Zu diesemThe reorganization of transmitters and receivers TRX1, TRX2 is also advantageous in the event of a power supply failure, since by temporarily deactivating transmitters and receivers TRXl, TRX2 the emergency power supply by a battery is possible over a longer period of time, the total failure of the corresponding cell becomes delayed. Switching off a transmitting and receiving device TRX1, TRX2 or an entire base station BTS after prior redistribution of the communication connections also enables maintenance of the corresponding devices. To this
Zweck finden zwischen Organisations- und WartungsZentrum und der entsprechenden Basisstation BTS eine Signalisierung mit Alarm-, Freisetzungε- (bezüglich Sende- und Empfangseinrichtungen TRXl, TRX2) und Deaktivierungssignalen statt. Purpose between the organization and maintenance center and the corresponding base station BTS signaling with alarm, release (with respect to transmitting and receiving devices TRX1, TRX2) and deactivation signals.

Claims

Patentansprüche claims
1. Basisstation (BTS) für ein Funk-Kommunikationssystem mit mindestens einer Sende- und Empfangseinrichtung (TRXl, TRX2) und zumindest einer Antenneneinrichtung (A) zur funktechnischen Versorgung von Kommunikationsverbindungen zu zumindest einer Gegenstation (MS) , gekennzeichnet durch, eine Steuereinrichtung (SE) zum Überwachen und Steuern der Sende- und Empfangseinrichtungen (TRXl, TRX2) , die eine Sende- und Empfangseinrichtung (TRXl, TRX2) in einen Energie- sparmodus schaltet, sobald diese keine KommunikationsVerbindungen versorgt . 1st B asisstation (BTS) for a radio communication system having at least one transmitting and receiving device (TRXl, TRX2) and at least one antenna device (A) for the radio-technical supply of communication links to at least one remote station (MS), characterized by a control device (SE) for monitoring and controlling the transmitting and receiving devices (TRXl, TRX2), which switches a transmitting and receiving device (TRXl, TRX2) into an energy-saving mode as soon as it does not supply any communication connections.
2. Basisstation (BTS) nach Anspruch 1, deren eine Sende- und Empfangseinrichtung (TRX2) in einen Energiesparmodus geschaltet wird, sobald die Auslastung einer verbleibenden Sende- und Empfangseinrichtung (TRXl) kleiner oder gleich einem Schwellwert ist.2. Base station (BTS) according to claim 1, whose one transmitting and receiving device (TRX2) is switched to an energy-saving mode as soon as the load on a remaining transmitting and receiving device (TRXl) is less than or equal to a threshold value.
3. Basisstation (BTS) nach einem der vorhergehenden Ansprüche, bei der eine Sende- und Empfangseinrichtung (TRX3) nur bei Vorliegen einer Ersatz-Sende- und Empfangseinrichtung (TRX2) für einen Organisationskanal in den Energiesparmodus geschal- ten wird.3. Base station (BTS) according to one of the preceding claims, in which a transmitting and receiving device (TRX3) is switched to the energy-saving mode only for the presence of a replacement transmitting and receiving device (TRX2) for an organizational channel.
4. Basisstation (BTS) nach einem der vorhergehenden Ansprüche, mit einer Zellensektorisierung, wobei durch die Steuereinrichtung (SE) jedem Sektor zumindest eine Sende- und Emp- fangseinrichtung (TRXl, TRX2) zugeordnet ist, und die Sende- und Empfangseinrichtung (TRXl, TRX2) , die für eine sektorübergreifende Versorgung vorgesehen ist, bevorzugt in den Energiesparmodus geschalten wird.4. Base station (BTS) according to one of the preceding claims, with a cell sectorization, with the control device (SE) assigning at least one transmitting and receiving device (TRX1, TRX2) to each sector, and the transmitting and receiving device (TRXl, TRX2), which is intended for cross-sector supply, is preferably switched to the energy-saving mode.
5. Basisstation (BTS) nach einem der Ansprüche l bis 3, mit einer Zellensektorisierung, wobei durch die Steuereinrichtung (SE) einer Sende- und Empfangseinrichtung (TRXl, TRX2) mehrere Sektoren zugeordnet werden können, und das Zuordnen und das Abschalten entsprechend den Anforderungen für Kommunikationsverbindungen in den einzelnen Sektoren vorgenommen wird.5. base station (BTS) according to any one of claims 1 to 3, with a cell sectorization, wherein by the control device (SE) a transmitting and receiving device (TRXl, TRX2) several sectors can be assigned, and the assignment and the switching off is carried out according to the requirements for communication connections in the individual sectors.
6. Basisstation (BTS) nach einem der vorhergehenden Ansprüche, bei der der Energiesparmodus eine Sendeendstufe der Sende- und Empfangseinrichtung (TRXl, TRX2) deaktiviert.6. Base station (BTS) according to one of the preceding claims, in which the energy-saving mode deactivates a transmission output stage of the transmission and reception device (TRX1, TRX2).
7. Basisstationssystem (BSS) mit zumindest einer Basisstation (BTS) nach einem der vorhergehenden Ansprüche und einem mit den Basisstationen (BTS) verbundenen Basisstationscontroller (BSC) zum Organisieren der funktechnischen Versorgung, der die Kommunikationsverbindungen derart auf die Sende- und Emp- fangseinrichtungen (TRXl, TRX2) verteilt, daß zumindest eine Sende- und Empfangseinrichtung (TRXl, TRX2) in den Energiesparmodus geschalten wird.7. Base station system (BSS) with at least one base station (BTS) according to one of the preceding claims and a base station controller (BSC) connected to the base stations (BTS) for organizing the radio supply, which thus communicates to the transmitting and receiving devices ( TRXl, TRX2) distributes that at least one transmitting and receiving device (TRXl, TRX2) is switched to the energy-saving mode.
8. Basisstationssystem (BSS) nach Anspruch 7, bei dem eine möglichst große Anzahl von Kommunikationsverbindungen einer Sende- und Empfangseinrichtung (TRXl, TRX2) , die einen Organisationskanal (BCCH) realisiert, zugeordnet wird.8. Base station system (BSS) according to claim 7, in which as large a number of communication connections as possible of a transmitting and receiving device (TRX1, TRX2) which realizes an organizational channel (BCCH) is assigned.
9. Mobilfunksystem mit zumindest einer Mobilvermittlungsstelle (MSC) , die mit zumindest einem Basisstationssystem (BSS) nach einem der Ansprüche 7 oder 8 verbunden ist, und zumindest einem Operations- und WartungsZentrum (OMC) , wobei im Operations- und WartungsZentrum (OMC) Informationen über die Auslastung von Sende- und Empfangseinrichtungen (TRXl, TRX2) verschiedener Basisstationen (BTS) ausgewertet werden und jeweils der Schwellwert eingestellt wird.9. Mobile radio system with at least one mobile switching center (MSC), which is connected to at least one base station system (BSS) according to one of claims 7 or 8, and at least one operations and maintenance center (OMC), with information in the operations and maintenance center (OMC) can be evaluated via the utilization of transmitting and receiving devices (TRX1, TRX2) of different base stations (BTS) and the threshold value is set in each case.
10. Mobilfunksystem nach Anspruch 9, mit einer Vielzahl von Basisstationen (BTS) zugeordneten Zellen, wobei zumindest ein Teil der Zellen als kleinere Zellen innerhalb größerer Zellen ausgebildet ist, bei dem bevorzugt die die kleineren Zellen versorgenden Sende- und Empfangseinrichtungen (TRXl, TRX2) in den Energiesparmodus geschalten werden.10. Mobile radio system according to claim 9, with a plurality of base stations (BTS) assigned cells, at least some of the cells being designed as smaller cells within larger cells, in which the transmitting and receiving devices (TRX1, TRX2) supplying the smaller cells are preferably switched to the energy-saving mode.
11. Mobilfunksystem nach Anspruch 10, bei dem zusätzlich weitere Einrichtungen der die kleinere Zelle versorgenden Basisstation (BTS) abgeschalten werden.11. The mobile radio system as claimed in claim 10, in which additional devices of the base station (BTS) serving the smaller cell are switched off.
12. Mobilfunksystem nach einem der Ansprüche 9 bis 11, bei dem die Schwellwerte entsprechend einem Zeitplan verändert werden.12. Mobile radio system according to one of claims 9 to 11, in which the threshold values are changed according to a schedule.
13. Mobilfunksystem nach einem der Ansprüche 9 bis 12, bei dem für eine in den Energiesparmodus geschaltete Basista- tion (BTS) eine wählbare Festleitung zwischen der Basisstation (BTS) und dem zugehörigen Basisstationscontroller (BSC) ausgelöst wird.13. Mobile radio system according to one of claims 9 to 12, in which a selectable fixed line between the base station (BTS) and the associated base station controller (BSC) is triggered for a base station (BTS) switched to the energy-saving mode.
14. Mobilfunksystem nach einem der Ansprüche 9 bis 12, bei dem die Kommunikationsverbindungen zwischen den Basisstationen (BTS) und dem Basisstationscontroller (BSC) zum Schalten in den Energiesparmodus als Punkt-zu-Mehrpunkt-Richtfunkverbindungen ausgebildet sind. 14. Mobile radio system according to one of claims 9 to 12, in which the communication connections between the base stations (BTS) and the base station controller (BSC) are designed for switching to the energy-saving mode as point-to-multipoint directional radio connections.
EP97951796A 1996-12-09 1997-11-20 Base station for a radio telecommunications system Withdrawn EP0947108A2 (en)

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DE19651080 1996-12-09
DE19651080 1996-12-09
PCT/DE1997/002729 WO1998026614A2 (en) 1996-12-09 1997-11-20 Base station for a radio telecommunications system

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CN1119036C (en) 2003-08-20
AR008708A1 (en) 2000-02-09

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