EP2252001A2 - Localisable GSM blocker - Google Patents

Abstract

The blocker has a switch-on-switch-off device removed from a Global system for mobile communicationdisturbing source. The switch-on-switch-off device stays in connection with the disturbing source. The disturbing source is switched-on and/or switched off by the switch-on-switch-off device. The blocker sends a signal, which is blocked by a frequency band. The signal is transmitted to the switch-on-switch-off device and to another Global system for mobile communicationblocker. An independent claim is also included for a network comprising a global system for mobile communication blocker.

Description

The invention relates to a spatially demarcated GSM blocker.

Such GSM blockers are known in principle and have the disadvantage that their range can not be precisely defined and therefore they interfere with the reception of mobile phones in adjacent locations.

For example, from the EP 0 056 8824 A system for marking zones in a mobile radio network is known, which in particular serves to mark the mobile radio telephones via radio signals, the marking data being used by the mobile telephone to inform the mobile radio network in which zone a mobile telephone is used. The system according to EPA0568824 is characterized by a definition of the zone boundaries. For this purpose, the method uses an interference signal at a specific point in time, namely when a marker signal is sent to another zone that is not to be received by mobile telephones located in a certain border zone of a zone. The transmission of tag and jamming signals at the various locations of the system is coordinated by a processor in the mobile network, which should definitely allow the use of mobile phones.

Furthermore, from the EP 0 856 999 a blocker for preventing transmission activities of a mobile station, such as a mobile phone, a mobile radio system with stationary base stations that broadcast synchronization information signals for reception by the mobile station to transmit to the mobile station upon receipt of a reception signal having a threshold exceeding reception power allow in an artificially generated controllable interference power in the form of the interference signal an existing interference power in the mobile network is increased to exceed radiated by the base radio station synchronization information signal to prevent mobile stations in this way, such as mobile phones, so without the participation of the Owners or potential users to reduce the risk of safety-related interference. For this purpose, the blocker emits radio signals as interference signals, which prevent the mobile phone to synchronize to a so-called base radio station or to decode the synchronization information signals of the signaling channel or to generally recognize the relevant signals of the mobile network.

The blocker proposed for this purpose can only be switched off at the blocker itself and causes the transmission power of the "Pbasis" to increase to such an extent that the existing transmission power "Pbasis" of the mobile radio network in this area is reduced to the mobile stations located in the protection area "SB" Received power "Pemp" arrives that the threshold "Pempmin" is no longer exceeded and so a connection is impossible. If this concept is installed in an aircraft, it may allow controlled by optional components of the cabin, leaving open whether these controls are located on the blocker itself, or locally away from this. A spatial limitation of the interference region can be achieved by changing the power of the interference signal to be generated and by a suitable choice of the location and type of the emission device. Completely open in the EP 0 856 999 How several jammers can be coordinated with each other in their effect and how the coordination between a central station and multiple blockers / sensors could be configured.

Furthermore, from the DE 199 11 240 A1 a method for locating mobile phones has become known, wherein a plurality of mobile radio measuring units receive electromagnetic signals in the frequency ranges of mobile devices and the transmission signals are tested according to the parameters for mobile and information in accordance with the measured reception level information is transmitted via an interface to a processing computer. However, such "cell phone detectors" can only partially solve the problems mentioned above. Thus, the use of a mobile phone can indeed be recognized in this way, but not so quickly prevented, so that an abuse is possible in the meantime.

Furthermore, from the DE 10 2005 034 289 a method is known, which polls for transmission provided frequency ranges for signals, so that in the presence of signals indicative of the operation of a mobile terminal, an interference signal is sent at least in the respective transmission frequency range associated reception frequency range. Preferably, it is provided that the query of several frequency ranges is cyclic. In addition, various suggestions are made as to how the individual frequencies can be identified and disturbed. The DE 10 2005 034 289 however, is silent about where the blockers are turned on or off. In addition, she is silent about how a location-specific disorder of individual mobile phones could be possible

The object of the present invention is to remedy this disadvantage.

This object is achieved by the features of the independent claims.

In particular, the task is solved by a GSM blocker comprising at least one GSM interference source and at least one on-off device, the on-off device being located remotely from and communicating with the GSM interference source, with at least one GSM interference source from this location remote from the GSM source of interference, it can be switched on or off at will.

A mobile radio system usually consists of several radio stations, often u.a. Called "base radio stations" which radiate synchronization information signals with a certain power "Pbasis". This power Pbasis is attenuated by the radio field and the signals arrive at a much lower receive power "Pemp" at a mobile station. Before this mobile station can transmit in order to establish contact with the mobile radio network, it must first of all decode the synchronization information of a base station "BS" suitable for it. For this purpose, the received power "Pemp" of the base radio station "BS" and received by the mobile station signals must exceed at least a threshold value of a predetermined receive power "Pempmin", which is specific for the respective mobile radio system minimum signal to noise ratio and present on the signaling channel interference power "Pstör" results.

The same applies to a mobile station "MFS" already in transmission state. In order to be able to maintain the connection, one must during the connection regularly sent synchronization information signal with at least one of the power "Pempfmin" corresponding power arrive at the mobile station to be received by the mobile station. Otherwise, the connection is triggered after a protection time, as a rule given by the mobile radio system, which is typically in the range of a few seconds.

Basically, it is possible to passively (eg by means of the construction of a Faraday cage in which GSM signals can not be received) or actively (eg by means of GSM jamming / GSM blocking / jamming) to prevent mobile phones from interfering cause. Disadvantages of Faraday cages is that they have a spatial environment, even if it is only one of e.g. fencing a wire mesh. They therefore appear to interfere with open areas, e.g. Prisons are often unsuitable.

An active GSM blocker is a device which actively prevents, with the aid of a transmitter of GSM signals, mobile phones from receiving signals transmitted by transmitters or transmitting stations.

Regardless of legality, GSM blockers can also be used on open spaces wherever quiet is expected or required, or where speaking with mobile phones or using their frequencies is prohibited. This can be in hospitals, cinemas, detention centers of the Falls. But it can also be the case in the protection against detonated by mobile radio explosives.

Usually, such GSM blockers send as GSM interference source electromagnetic frequencies in the frequency band to be disturbed. As a result, when the interference signal is strong enough, the data transmission between the mobile phone and the transmitting station disturbed, so that their use is no longer possible. This disturbance is usually noticeable on the mobile phone because the mobile phone can no longer log in to the GSM network.

Therefore, since many mobile phones use different frequency bands for data transmission and data reception, GSM blockers may interfere either with the connection from the mobile phone to the transmitter, or from the transmitter to the mobile phone, or both. In this case, GSM blockers, which disrupt the connection from the transmission towers (base station) to the telephone, require less energy because, due to the greater distance, the energy with which these data are transmitted is lower.

For example, stationary and / or mobile mobile phones and / or GPS blockers can also be used as blockers (the principle of a fault described for GSM connections can also be used to block GPS connections). Such mobile telephones and / or GPS blockers transmit mobile radio and / or GPS interfering signals in a radius of e.g. 10, 20 meters around the communications between the mobile phone and the transmitting stations of the mobile operators, or to interrupt the GPS signals. Except mobile phones and GPS signals are blocked or disturbed by such a blocker no other devices. With combined GSM and / or GPS blockers, locating the location is then no longer possible thanks to the integrated GPS interference signal. When the blocker is switched off again, all mobile phones and / or GPS tracking devices will work again automatically and will immediately log back into their designated mobile network.

Current GSM blockers not only block one network, but several networks, such as CDMA, iDEN, GSM, UMTS, et al. and can therefore also be used against multi-band phones, which, for example, automatically log into the currently available network of a country. The same applies to the different standards of networks worldwide. In particular, this applies in Germany for the frequencies currently used in particular: 850 960 MHz for the DNetz and foreign networks, 1805 1990 MHz for the German ENetz, 2110 2170 MHz for UMTS.

In the case of the UMTS network, not only must the mobile phone authenticate itself to the network but also the network must be authenticated to the mobile phone. For this purpose, a subscriber-specific key is provided, which is stored only in the so-called Authentication Center of the network operator and on the SIM card of the respective mobile phone and is never transmitted on the network. Without knowledge of this key, therefore, a user of a mobile telephone can not be identified or his conversations can be intercepted by a public service authorized for this purpose, such as, for example, a police authority.

UMTS mobile phones are DualModefähig, ie it is possible with them a network operation in both the UMTS and in the conventional GSM network. These dual-mode mobile phones automatically switch to the GSM network if no connection to the UMTS network is possible. This interaction of mobile phone standards and the necessary requirements for the mobile phones is described in detail in the 3GPP standard, for example in the standards 3G TR21.910, 3G TS22.011 and 3G TS23.122. Thus, for example, in the reception area of such a dual-mode UMTS mobile phone, one or more jammers can be operated which transmit such interference modulation or interference coding on the UMTS carrier frequency with a bandwidth of 5 MHz, whereby the automatic system effective in the mobile telephone Establishing a connection to the UMTS network recognizes such a connection for not possible and then automatically switches to the GSM network and tries to establish the desired connection in the GSM network. This GSM network can then be disturbed in the known way.

The same as for the GSM networks described here by way of example also applies to WLAN or other networks which are used for data exchange and in particular for the transmission of messages, such as e.g. Voice messages and / or text messages are suitable.

The range of individual such mobile phone blockers can vary widely; it depends primarily on the proximity of the nearest mobile telephone tower where such a mobile telephone blocker is operated. Some mobile phone towers (depending on the location) send with a power of 500 watts. To counteract such a strong signal in the immediate vicinity then mobile phone blocker with a high performance are necessary. From a distance of 500 meters from the radio mast, but under normal conditions, experience shows that a successful failure of a mobile phone blocker with the following technical data: If the max. Output at about 0.5 watts, the range is about 5 10 meters, or at an output of 3 watts with a range of 10 - 20 meters, or with an output of 10 watts with a range of about 40 Meter. In such devices, an SMA antenna interface can be used.

A preferred jammer has on at least one of these frequency bands a maximum power of between a few mW to around 1500mW and more preferably around 900mW. It is preferably e.g. can be throttled and / or adjusted by means of a timer with regard to its output power.

Individual such blockers may be interconnected to a blocker network.

An on-off device, which is located remotely from the GSM source of interference is particularly advantageous if it must be prevented that people make manipulations at this source of interference, or their functions can operate independently, as it is the case in prisons.

Here, this on-off device is to be distinguished from a computer. On the one hand, the blockers according to the invention can also be switched on or off by a computer. However, this is disadvantageous in the case of computer breakdowns, because these blockers must also be switchable when the computer is shut down, or these blockers must not be switchable by hacker attacks. On the other hand, these blockers must also not be switchable on the ground, otherwise the crews of e.g. Prisons can turn off these at will.

The on and off device of a single blocker or blocker network is therefore moreover suitable for outputting signals received from the GSM blocker by being able to switch or switching at least one of the GSM blockers. For this purpose, the on-off device (for example, via cable and / or by radio) are in electrical contact with the GSM blocker and / or GPS blocker. The on-off device is adapted to cause switching signals, which is transmitted via the electrical contact to at least one GSM blocker and this switches the on-off signal accordingly. This then provides the switching signal according to its fault function or not.

If the on-off device is located remotely from the GSM source of interference and is electrically connected to it, this can not only the switching signal but it is also a remote control or remote control, for example, from a single operation center from possible. The on-off device can be operated (eg from this operation center) either manually, and / or automated. In this case, the manual operation can be carried out subsidiary to the automated operation, so for example be automatically activated in case of failure of the automated operation. Alternatively, the manual operation can be carried out parallel to the automated operation.

If it is operated automatically, this automation can take place with the aid of a program, for example, laid down in a software routine, which may be part of a control device on which this routine can run. This program can include a switching command to turn on or off individual or all blockers in a defined area at a defined time (eg, yard walk in jail: turning on the blocker in the yard, and simultaneously turning blockers off in individual cells). Alternatively, a blocker can also be switched on by a presence detector and / or motion detector, that is to say a sensor which identifies the presence of a person. This presence detector and / or motion detector may be part of a locally separated from the other components device, and / or, for example, part of the described later sensor for detecting Einbuchversuchen of mobile phones in the mobile network. This presence detector and / or motion detector can send its data in the same way in the direction of blocker or central office (computer and / or manual operation), as the sensor for the identification of Einbuchversuchen. Each of these paths can be independent, so that optimal redundancy / protection against sabotage is given. For example, the presence detector / motion sensor can switch the blocker directly and report it then his activity to the central office and / or he can ask the central office to turn this blocker off. In addition / alternatively, he can do so after receiving a recorded by a sensor Einbuchversuch by a mobile phone. The presence detector / motion sensor can additionally additionally and / or alternatively directly switch the blocker on and off independently of the control center (computer).

If the on-off operations are not effected directly by the sensor on the blocker (s) and not switching them directly, they are transmitted to the control device via the described connection paths. This control device can be adjusted by means of e.g. Microcontrollers (processor) and a corresponding control circuit or control circuit detect whether an immediate circuit of the blocker has already taken place and they can detect whether the signals from the on-off device (a switch and / or a presence / motion sensor and / or a Einbuchsensor can be sabotaged), for example, if the switch would have to switch the blocker immediately, but the blockers no activity signal was sent to the control center. In this case, a sabotage alarm is triggered in the control panel.

In particular, a continuous signal (wobble) is preferred for interference.

In the alternative case, if this on-off device is not intended to switch the blocker directly, but indirectly via the center, they are transmitted to the control unit of the center and / or displayed to be further processed by manual operation. In the control center, they are modified or verified according to the program or the commands of the operations center (eg origin of the signal, check whether the process is suspicious, etc.) and it is depending on this modification / verification, an event is calculated (activity required / activity unnecessary). This result is ideally in a form that can then process the individual GSM and / or GPS blockers (eg, turning on and off and / or locating the blocker and / or changing the noise level, etc.). Depending on this result, then the GSM and / or GPS blocker perform functions. These functions can then be switched on / off, but also in an increase / decrease of the interference power, or in a local orientation of the interference signal, if it can be emitted directionally.

Such a with e.g. A GSM blocker provided remotely with an on-off device causes it to be optimally protected against sabotage, and from a central location, such as a sabotage terminal. a control center, or e.g. the receptionist of a hotel, or the guardroom of a prison, each blocker can be turned on and off, depending on the situation on the ground, to allow or deny telephony (e.g., during conferences) to the persons in the vicinity of the blocker.

An on-off device is in this case a device which supplies the blocker with operating current and / or operating voltage. This on-off device is also suitable complementary and / or alternatively the operating current or the operating voltage of the sensors and / or femtocells independently of each other or can turn off. In this way it differs from e.g. Computers that are able to change performance data but are unable to connect or disconnect the operational supply.

The switchability by a remote on-off device is an important feature, especially in security-relevant facilities, which is not in common blockers is realized. It allows their use in safety-relevant facilities only because only through them a sabotage protection, or a protection against abuse is effected. Therefore, common blockers (associations) in safety-relevant environment are practically unusable. This lack of applicability is also not mitigated by the fact that a blocker is controlled by a computer, because the on-off device is the control priority, because only what is on-off, can be controlled at all. On-off devices but are not previously activated by computers, at least no such system is known. Therefore, previous ones by computer o.ä. controlled blockers (associations) may reduce a blocker in its performance, possibly put it into a sleep state, but not turn it off in the sense of: cut it off the power supply, because in a sleep mode, for example blocked blocker are not turned on blocker in the sense of present invention.

The emitter may be a single antenna for realizing a discrete emission point, or a combination of spatially distributed antennas, or a slot cable such as leakage cable, or a combination of these devices. Since the radio field of both a base radio station and the blocker can not be limited exactly, there is a temporally and spatially variable border area with an undefined behavior at the edges of the block area. The size of the boundary region can be very roughly minimized by appropriate choice of the radiator. The control device consist in the simplest case of elements for switching on and off of the blocker, or additionally, for example, a power control or

Power control for the interference signal SIG-stop and / or a component monitoring and function display included

A local demarcation of the blocking function is effected in particular by remotely on and off switchable individual blocker of a blocker network and / or by their local alignability. If at least one GSM interference source can be switched on or off at will from this location, which is locally remote from the GSM interference source, then a situationally definable spatial area of GSM reception systems can be calmed. The same applies to GPS reception systems or a combination of both.

For a still further improved demarcation of the spatial area to be blocked, care can be taken, for example, with the help of the use of mobile telephone blocker directional antennas. Such directional antennas are suitable for indoor or outdoor use. Such an antenna can be used for all GSM and UMTS etc. frequencies, preferably up to a power of up to 50 watts. With such a directional antenna, the blocker signal is aligned and amplified, and with very high accuracy, mobile phones in a local area can be blocked.

Ideally, this directional antenna with the help of controllable motors is locally aligned. You control information for this ideally come from the control center (control unit).

Within a blocker network, any number of blockers can be switched individually or in groups. At least one such GSM blocker wherein the on and off device is suitable, each of the GSM interference sources individually turning on and off again causes, in a network and / or a single blocker of switchable GSM blockers which is switched in this way, the overall interference power of the blocker can be made lower than dimensioned, as if all blockers are switched together. Thus, all blockers of a network or just the individual blocker can be switched individually.

Preferably, at least one such blocker comprises sensors with the aid of which it can be identified whether a mobile telephone is switched on in the vicinity of this blocker. This is possible by e.g. this sensor identifies the booking of the mobile phone. If one or more sensors identify this log-in, then by means of locating e.g. be limited by GPS or triangulation or by the identification of the intensity of the Einbuchungssignals the place of this registering mobile phone. In particular, in the case of a single blocker, it is possible to deduce the distance of the booking mobile phone to the blocker via the strength of the transmission signal of the booking mobile phone.

If in this or in an alternative manner known to those skilled in the mobile phone can be identified and / or located, and if these location data from the sensor to the control device and / or the control room are transmitted, can automatically and / or by hand by the control body always the one or more jammers located in the vicinity of the booking mobile phone are switched.

The sensor can but need not be in the jammer. Rather, it may additionally or alternatively also be arranged at another point in the blocker network and be in contact with the center or the blockers.

So that jammer / blocker and sensor do not mislead each other, control device can operate them sequentially, ie alternately one behind the other. If the sensor is on then the blocker would be off and vice versa. With the aid of a control circuit, it can be ensured that the blocker, with its sensors on one side, forces the logging-in signal on the other side to its knees. The former are only switched whenever the latter try to log in, and that until a log-in process can no longer be established on any of the nets.

Thus, the use of the blockers can be defined much more accurately, spatially and temporally, than if he were permanently on or as if he were on for a period of time (e.g., during the performance of a movie in a movie theater).

Thus, such a network of smaller sized GSMStors is e.g. a major disruptor regarding the local demarcation of its effect.

Via a remote communication interface, e.g. In addition, the blockers can be individually addressed in order to be able to switch their blocking function on and off.

Such a GSM blocker whose source of interference disturbs at least one of the mobile radio frequency bands, such as the frequency bands 900 MHz, 1800 MHz 2100 MHz causes, for example, with the help of the control device and / or by hand, for example from the center of each of the receivable frequency bands can be disturbed separately , Depending on the country, mobile telephony, for example, on the three frequency bands GSM900 (GSM to 900 MHz), DCS1800 (GSM 1800 MHz) and UMTS (WCDMA) operated at 2100 MHz. Of course, the concept according to the invention can also be applied to frequency ranges to be newly identified in the future. Furthermore, it can be combined with other blockers, such as GSM blockers.

Preferably, this information is output independently or dependent on the control unit in the center and can thus be monitored by a central person responsible.

If only the respective networks in which the mobile phone tries to log in are blocked, the blocking performance can be further reduced and the other networks can be easily used (for example outside the cinema by the audience waiting there).

For the entire invention is that the inventive device is not limited to transmission systems GSM and / or UMTS. It can also be applied to other non-wired transmission options, such as WLAN and Bluetooth. In the case of GSM, for example, a component of 216 Hz can indicate the operation of a terminal, in the case of Bluetooth a component of 3200 Hz, corresponding to the jumping frequency specified in Bluetooth.

Such a GSM blocker whose source disturbs all of the currently three frequency bands at the same time causes all three frequency bands can be disturbed at the same time. This means that multi-frequency mobile phones can not log into another network if one of the networks is disrupted. Preferably, this information is also output in the control center in order to be monitored by a central responsible person.

Such a GSM blocker, which emits a ready signal indicating its functionality, causes permanent monitoring of its functions.

Preferably, the device transmits a ready signal (heartbeat) every n seconds (for example, 10300 seconds, in particular every approx. This is preferred over remote communication means, e.g. Radio remote. The settling channel is preferably independent of the GSM channels to be blocked and / or redundant.

If this signal is transmitted, for example, to the control center and output there, this will cause this service to always have an overview of whether the blocker is working or not.

This signal can be sent via the same communication path, which also use the blocker and is preferably also received by the control unit and / or the central. This does not exclude that e.g. for safety reasons e.g. In addition, additional means of transmission can be used in prisons to protect the system against sabotage.

Preferably, this information is also output in the control center and thus monitored by a central responsible person.

Such a GSM blocker, which transmits a signal indicating whether the blocker is currently blocking one of the mobile radio frequency bands, issues a standby signal independent of the heartbeat. If this further display signal is also transmitted, for example, to the control center (control center) and output there, the result is that the service provider always has an overview of which blocker is currently providing his bockade effect. This display can be extended to indicate which frequency is being blocked (see claim 7). This can be done either by outputting the frequencies in numbers, or e.g. by colored signals of e.g. LEDs.

By such a dosed procedure, the burden of unnecessary radiation can be further reduced.

Preferably, the blocker is also provided with a transmission power adjustment device. This transmission power adjustment device can adapt its commands to the transmission power, e.g. received from the control unit and then executes it. With this device, beyond and / or additionally also the blocking performance can be reduced / adjusted. This can either be done manually and / or e.g. be deposited in the automation routine, so that in this way a fine adjustment of the intensity of the disturbance of the respective frequency band is possible, the following always only as much power is delivered, which is necessary to effect the blocking effect at the destination.

Such a GSM blocker, which emits a signal which is blocked the frequency bands and also transmits this further information signal, for example, to the control center / control center and outputs there causes the principal at any time has an overview of which blocker for which frequency band just provides its Bockadewirkung.

Preferably, this information is also output in the control center and can thus be monitored by a central responsible person.

The transmission of all these signals for the central office / central office from the blocker to the central office / central office preferably takes place via at least one further path independent of the control signal for the blocker (s), e.g. Cable and / or radio, etc. It is also conceivable to use the GSM blockers themselves, for example by each GSM blocker receives the Hartbeat / ready signal, which indicates its functionality by at least one other GSM blocker (eg radio and / or wired, for example, via powerline) and the signals are thus transmitted to at least one other of the aforementioned GSM blockers. In this it can then be processed either logically (in a processing unit). The result of this processing may be "the neighbor blocker is working" or "the neighbor blocker is not working" because it is e.g. is disturbed by sabotage. In the latter case, the undisturbed blocker sends an alarm signal for the disturbed (sabotaged) blocker to the central office)

Thus, by notifying the other failing blocker to the central office / principal when this blocker has a failure or failure, effective tamper protection can be established since it is impossible to sabotage all blockers at exactly the same time. The message can be made eg via radio and / or wire (eg via Powerline).

Such a GSM blocker, wherein each of these signals (heartbeat and / or sensor signal of a booking of a mobile device) is not only transmitted to the on and off, but in addition to at least one other of the aforementioned GSM blocker, this signal then transmitted to the on and off device causes redundancy in transmission of the signal emitted by the blocker (information signals). This redundancy counteracts sabotage of the blocker or its communication paths. This is especially the case when the blocker informs about his condition with the help of a heartbeat.

The invention is further achieved by a network comprising a control center, electrical connections originating from this center and GSM blockers connected to these electrical connections. The blockers can for this purpose have a shape described above. Central, lines, sensor (s) and blocker are interconnected so that they communicate with each other via these wired and / or line unbound. Cables can therefore also be replaced or supplemented by wireless solutions.

Such a network may consist of a control center to which e.g. star-shaped blockers and / or sensors are connected. The sensors can also be connected to the blockers. The compounds may e.g. have a star shape, wherein the control center may be located in the center of the star, in which the connections converge.

The blocker / sensors communicate for this purpose via the electrical connections to the center and / or each other.

The control center may comprise a control unit that automates this communication and / or a non-automated hardware solution, in which a local operator located there must operate the otherwise automated control.

In the case of automation this can be done by a suitable electronic circuit, e.g. at least one processor, and / or at least one memory on which a flow algorithm can be played.

Depending on this algorithm, the blockers / sensors can be switched on / off, the frequencies to be detected by the sensor and / or the frequencies to be blocked by the blocker are monitored, the hardbeats are switched on or their function is monitored, the sensors are in direction be indexed mobile phones and / or the blocker in the direction of disturbing mobile phones. The latter is possible if sensors / blockers are movably arranged in space and can be aligned in space, e.g. by being rotatably mounted in the spatial axes by means of motors. The control signals necessary for alignment can also be determined by the control center and sent to the sensors / blockers.

For example, the algorithm will be constructed such that when at least one sensor identifies a log-in mobile phone, it transmits this information to the control center. The control center checks whether other sensors have identified this process. If this is the case, the sensors are aligned in the direction of this log-in process, whereby the orientation, which is reported back to the control center, the location of the process can be identified (cross-bearing). Additionally or alternatively, the identification of this location can also based on the signal strength, or be improved. The higher the signal strength, the closer the process will be. By identifying these distances, the location of the process can be identified quite accurately.

The sensors or the control panel can then direct the blockers to exactly that location. It is ideal if the sensors are therefore in the blocker, in which case precautions must be taken that the blocking signal does not affect the sensor.

If this is the case, the sensors are aligned in the direction of this log-in process. this at least one sensor aligns in the direction of this mobile phone.

After ironing the clearances can then be made by the central office for the discontinuation of the interference and it can be metered by the center of their intensity.

Ideally, these functions are integrated in a control loop so that these functions are only activated or until the sensors no longer perceive a log-in signal.

Ideally, the peculiarities of the bookings can be identified and either the entire frequencies are disturbed, or only one of these peculiarities are disturbed.

By disturbing only individual peculiarities of the log-in process, it is possible to equip the system so that it is not overloaded by a large number of modern eibuchender mobile phones, since the system can move quickly from one booking process to the next.

If the controller identifies a threat of congestion, all blockers may apply a continuous interference signal over all candidate frequencies.

The object is therefore also achieved by a network of GSM blockers, which locate and / or identify the at least one mobile device to be disturbed in a first step. Preferably, in a further step, the sensor and / or blocker is aligned in the direction of the booking mobile phone. Preferably, in a further step, the operating frequency and / or the Einbuchvorgang is also disturbed by the blocker. Preferably, in a further step, changing frequencies are blocked or disturbed during the booking process of the mobile phone entering the booking.

Such a network, wherein the central office is automated by means of a microprocessor and a program has the advantage that in this center, the control can be done centrally. Optionally, at least one of the above blockers may include a receiving unit for recognizing mobile phones and / or GSM receivers logging in to a GSM network. In this case, upon detection of such an operation, this information can be forwarded to the control center and the control center can put into operation blockers located nearby and / or instruct them to block this connection setup with the aid of the emission of an interference signal.

If, in addition, the antenna (eg directional antenna) is provided with an alignment function (eg a rotation and / or swivel mechanism), the center can identify, for example by means of a cross-bearing or with the aid of a GPS location, the location of this registration attempt and the blockers to this location Align and operate after alignment to prevent logging in. This can be done automatically.

In addition, if such a network also comprises at least one fenmptocele, blocked areas can be selectively provided locally with a connection possibility to the GSM and / or GPS network.

Femto cells offer several advantages over ordinary mobile phone base stations: they can be set up by subscribers themselves - ie without complex network planning - exactly where the network operator's base stations are insufficient and thus improve their own radio coverage in one fell swoop. Thus, in a blocked security area, e.g. security personnel are provided with such a cell and move through the blocked area with this cell (e.g.

Another area of application is the precise local definability of the outer boundaries of blocked areas: Even if network areas are spatially blocked in the manner according to the invention, it may also result in blocking of locations which should not actually be blocked. Or if a large area is intentionally blocked, in which an isolated communication island is to be created (eg a security guard in an otherwise large-scale blocked prison, or a cell in which limited time may be phoned), this can ensure on the one hand a local communication can be blocked in this way on the other hand at the same time a wide area. For this purpose, the femtocell can hold the contact with the central unit via an unblocked frequency or, for example, by cable, and operate in this manner so that communication via the femtocell is actually possible.

Thus, a guard moving in a blocked area could even use his mobile phone, as he would be able to connect to the GSM network via his e.g. could build concomitant femtocell. For this purpose, his mobile phone would be equipped with a femtocell, which e.g. generates a signal that overshadows the existing blockage of the network in a small local area so much that this local cell can no longer be eliminated by the blockers, or which has a micro-space of e.g. opened a meter around the mobile phone, this can be booked, but then the conversation over an unblocked network of femtocell to the headquarters and is fed from there into the GSM network.

For this purpose, the control center comprises a control device, with the aid of which control signals can be routed from the control center to the femtocell and vice versa, and with the aid of which the call data can be routed from the femtocell to the center and vice versa. The control device also provides for coordination of femto cells, blockers, sensors, etc.

In this way, a locally precisely defined blocked area can be created, whose spatial contours can be set to a few meters exactly and in the blocked area also includes islands within which communication is possible. These islands can be mobile and only a few decimeters in size.

Thus, according to the invention, a situational and locally precisely limited blocked spatial area is defined by a network of blockers, sensors and femto cells which can be coordinated from a central station.

In this way, a network of blockers can be created, which is set in situ and selectively in operation and its effect temporally situational and / or spatially punctually provides. This is particularly possible if the microprocessor and the program sets each GSM blocker and / or sensor and / or femtocell in its transmission power and spatial orientation such that a mobile phone entering a mobile network is thereby disturbed and / or logged on and / or or prevented from establishing a connection to its base station.

If such a network comprises a femtocell, despite the interference permitting a spatially limited mobile radio connection, a communication island can be effected within a disturbed area. This can preferzugswiese, controlled by the center, for example a few meters, e.g. 5 meters. This can be achieved by the central office by means of adjusting the performance of the femtocell. If a femtocell is installed in a mobile phone, a GSM network can only be a few decimeters tall. The mobile phone logs into this via the GSM network and the data is then forwarded via an unblocked connection or a blocked network to the central office, which can either bring itself directly into the connection, or this data to the GSM network forwards.

In addition, the object is achieved by a building space comprising a GSM blocker comprising at least one of the aforementioned blockers.

In addition, the object is achieved by a building or house comprising at least one of the aforementioned building rooms and / or at least one of the aforementioned GSM blockers and / or such a network.

• Fig. 1 ein Schaltbild eines GSM-Blockers;
• Fig. 2 ein Schaltbild eines GSM-Blockers;
• Fig. 3 ein Schaltbild eines GSM-Blockers.

The object is further achieved by one of the embodiments, as they emerge from one of the figures. Here are the:

• Fig. 1 a circuit diagram of a GSM blocker;
• Fig. 2 a circuit diagram of a GSM blocker;
• Fig. 3 a circuit diagram of a GSM blocker.

The problem is solved in particular by a GSM blocker, which for example provides at least one frequency in order to block a mobile telephone on the DNetzBand.

Thus, one or two for D and ENetz, sweepers sweeping the reception area of the mobile phones, can be used. This then generates short glitches on the receiving frequency of the mobile phone, which should be dimensioned by their strength forth in order to permanently disrupt the reception or even to prevent the login to the base station.

A blocker may in its basic design consist of an interfering spectrum generating unit, an emitting device, a control device, a power supply and optionally consist of a measuring unit. This is then connected with other elements, such as an on-off device, via eg cables to a control center, from which the blocker can be turned on. Furthermore, it can be provided with alignment devices (motors, directional antennas, etc.) with which its directions of action can be defined. Furthermore, it can be equipped indirectly (via the central office) and / or directly with sensors which help to control functions of the blocker.

There are various methods for the execution of the interference spectrum generation unit. Its maximum output power will preferably be in the range of -10 dBm to + 20 dBm.

To disturb the reception of the mobile phone already low transmission power. A milliwatt from a distance of ten meters, for example, produces a comparable field strength as a transmitter with 10W from 1km with a clear view. Sine transmission power of a few milliwatts can thus be sufficient depending on the requirement profile.

The generated Störsignalform is preferably freely selectable from several proposals, for example, to prevent interference with other mobile subscribers, which should not be blocked. Therefore, advantageously, a waveform is used which has a uniformly distributed power outside the range in the frequency range to be locked, but has as little power as possible. A pulsed power known from time-division multiplexing systems such as the GSM system may be used, but more suitable is to use a wideband pseudo-noise signal or the channel spacing of the mobile radio system corresponding set of discrete carrier signals or a corresponding frequency-modulated signal used as interference signal.

The interference spectrum generation unit may for example consist of a broadband pseudo-noise generator, a frequency generator for generating the carrier frequency, a mixer for transforming the base signal into the desired frequency band of an amplifier stage for decoupling the signal, a bandpass filter for generating the desired frequency spectrum in the interfering frequency range, another consist of the controlled amplifier stage for power amplification and another band-pass filter for limiting the blocker noise outside the FB stop.

It is preferred to use a jammer, which adjusts itself to the frequency of the respective mobile phone and thus disturbs much more effective. Such devices operate like a base station, i. the mobile phone logs into this interferer (which also transmits the corresponding provider IDs), but when attempting to establish a connection the jammer transmits that no connection to the provider's network is possible.

Such a working blocker is then not a jammer in the strict sense, but a kind of portable base station for all networks, which is networked only with the source of interference.

• Auch mit Sendern, die auf anderen Frequenzen schwingen, kann ein Mobiltelefon gestört werden, wenn "nur" die Sendeleistung hoch genug ist.

D-net mobile phones transmit 990 915 MHz on the lower band and 935 960 MHz on the upper band. An inventive blocker therefore operates in at least one of these two frequency ranges is working, and "carries" the signal. BUT:

• Even with transmitters that vibrate on other frequencies, a mobile phone can be disturbed if "only" the transmission power is high enough.

The circuit diagram would basically look like a well-known RF oscillator (100MHz or similar). However, such oscillators are complicated to build and often the frequency drifts and the oscillator is difficult to tune. For oscillators in the GHz range, there is also the problem that each conductor represents a capacitor and at the same time an inductance. Each resistor has, in addition to the ohmic portion, a capacitance between both terminals and an inductance as soon as current flows through. Each capacitor also has a resistance and an inductance of the leads. Normally, these disturbances are not significant. In the case of an oscillator circuit in the GHz range, however, the "active" components of the resonant circuit itself are not larger.

A coil for this frequency range itself consists for example of a U-shaped conductor track, the capacitor of the resonant circuit consists for example of two, over a defined distance parallel conductor tracks.

In such a circuit, if only one track has a non-100% matching resistance, the oscillator will detune the resonant circuit by its own capacitance such that there is a risk of being completely elsewhere with the frequency than intended or that the oscillator will not resonate at all ,

• 2 Kondensator 4,7 pF
• 1 Kondensator 3,9 pF
• 1 Kondensator 100 pF
• 1 Kondensator 10 nF
• 1 Drehkondensator 5 15pF (experimentell)
• 2 DrosselSpulen 0,27 mikroHenry
• 2 Widerstände 10 kOhm
• 1 Widerstand 100 Ohm
• 1 Transistor BFR 93 oder Vergleichstyp
• Koaxialkabel 50 Ohm ca. 20 mm lang

For example, for a 900 MHz transmitter would be necessary as components (everything smd of course) to the oscillator:

• 2 capacitor 4.7 pF
• 1 condenser 3.9 pF
• 1 capacitor 100 pF
• 1 capacitor 10 nF
• 1 rotary capacitor 5 15pF (experimental)
• 2 throttle coils 0.27 microHenry
• 2 resistors 10 kOhm
• 1 resistor 100 ohms
• 1 transistor BFR 93 or comparison type
• Coaxial cable 50 ohms about 20 mm long

With these components, the skilled person would rebuild the circuit diagram of a known HFOszillator (100MHz or similar) and interpret it to 900MHz.

For this purpose, the 10 nF capacitor is switched between + and pole of a voltage supply (for example 9 volt) for voltage stabilization (its value is rather of minor importance).

The two 10 kOhm resistors are the voltage divider for the transistor, ie between base and emitter (a transistor has three connections: base, collector and emitter) would have to be about 4.5 volts. The 100 pF capacitor is soldered to the base of the transistor and connected to ground (negative pole). To the emitter of the transistor, one of the two coils in series with the 100 ohm resistor is also grounded. Parallel to the coil and resistor are soldered two series 4.7 pF capacitors and also grounded. It is fed back to the 3.9 pF capacitor, which is connected to the emitter on one side and to the collector on the other side. Plus pole and collector also connects a 0.27 microHenry coil. At collector this is Coaxial cable, and connected in series to the variable capacitor and grounded. The outer conductor of the coax cable also comes to ground. Furthermore, a 610 cm long antenna is soldered between the two 4.7 pF capacitors. The variable capacitor is the frequency-determining component. As already mentioned, the frequency can be varied and adjusted with it until the corresponding mobile phone acknowledges its service. The transmission power of such a circuit can be increased with amplifier circuits.

A blocker for other frequencies can in principle be built in the same way. The skilled person will adapt the described components accordingly.

An alternative is to generate such a clock digitally, for example with sharp-edge signals and harmonics.

Another alternative is to reconfigure an existing mobile phone.

• Um eine erfindungsgegmäßes Netzwerk aufzubauen, kann eine beliebige Anzahl derartiger Blocker z.B. in Sternform um eine Leitzentrale herum angeordnet werden. In dieser Leitzentrale, welche z.B. von Überwachungspersonal überwacht wird laufen die Verbindungen zu den einzelnen Blockern zusammen und (fakultativ) auch die Verbindungen mit zu den Hartbeats, seien sie nun mittelbar oder unmittelbar vom jeweiligen Blocker stammend.

Alternative schematics for such blockers go from the Fig. 1 . 2 . 3 out:

• In order to construct a network according to the invention, any number of such blockers can be arranged, for example in star form, around a control center. In this control center, which is monitored by monitoring personnel, for example, the connections to the individual blockers come together and (optionally) also the connections to the hard beats, whether they come directly or indirectly from the respective blocker.

A blocker or blocker of this kind can be equipped with a directional antenna. Technical data for Such directional antennas may be: frequency band: 806 960 MHz, or 1700 2500 MHz; Input impedance: 50 ohms; SWR: <1.5; Gain: 8dBi; Power: 50 watts; Beam angle: 75/90 degrees; Dimensions: 240 x 230 x 65 mm; Weight: 1.8 kg. With their help, an exact spatial area can be defined in which is to be blocked.

The connections and lines and signals are here manually or automatically e.g. managed with the help of a microcontroller and a program running on it.

Networks according to the invention may consist of a control center, comprising the computer and / or a possibility for manual operation. The control center in this case, for example, via radio and / or cable to the blockers and / or sensors and / or Femptozellen and coordinates their activity such that a locally defined area is blocked at the latest whenever a Einbuchversuch is found, the femtocell can dominate this system , which is why in your immediate vicinity a registration (authorized persons) is possible. This can be e.g. be priviliguiertes room as well, such. a security guard on patrol in an otherwise blocked environment.

Although femtocells are fundamentally related to the current mobile technology, the technology has more in common with VoIP telephony. This is due to the characteristics of the preferred transport medium (DSL or cable), ie the bandwidth limitation and the typical problems of packet-based transmission (packet losses, signal delays, delay fluctuations, etc.). They all reduce speech quality and therefore need to be minimized for optimal communication. Therefore you can Femto cell-switched mobile phones have the same quality requirements as VoIP calls.

In order to ensure the highest possible voice quality, the same solutions as with VoIP connections come into play with femto cells because of the same problems.

The components of a Fempto cell architecture communicate via standardized interfaces and can therefore be seamlessly integrated into a core network. Specifically, these are the Femto Access Point (FAP), the Femto Gateway (FGW) and the Femto Management System (FMS).

The FAP, ie the device that spans the radio cell, consists of the radio hardware and the backhaul, ie the line to the Internet / Intranet network (which can be integrated, for example, in a blocker and then forms part of the intranet network). The FAP connects the wireless terminals to the FGW, which is located in the control center. The FGW houses security and control elements. In addition, the FGW binds the individual femtocells to the core network. The FGW essentially depends on how many femto cells can be connected to the core network. The FMS handles administration and configuration tasks for the FAP and FGW (for example, user administration, initial configuration with scrambling codes, security settings).

Femto cells can be connected to the FGW without any user intervention (zero-touch configuration). Since the time of commissioning of the center is left, the femto cell automatically starts a detection and registration procedure (Discovery & Registration) during the connection, in which they the optimal (usually the next) FGW searches and thereby the blocker evades, or This outshines him. It uses a fixed address as usual in IP networks (URL), which is resolved via the Domain Name System (DNS) to the IP address of the FGW.

Subsequently, FAP and FGW authenticate each other; mostly via IKEv2 in conjunction with a Public Key Infrastructure (PKI). Optionally, the FAP can authenticate to the FGW via a SIM card. After this step, the transport of data is IPSec-encrypted.

Femto cells can be integrated into the core network in three ways: as a separate core network, as a second autonomous IP core network and as a virtual radio access network controller (as RAN elements). Common to all integration models is that you can not treat the femto elements as normal base stations with standard interfaces - just because of the management components that are not designed for the high number of cells and also because of the shaky IP-based connection.

In some approaches, typical network tasks such as resource management (Radio Resource Management) and encryption (ciphering) have been handed over to the cell to reduce management and signaling overhead. The associated policies and keys are exchanged after the connection to the core network and allow the femto cell high autonomy. Therefore, the UMTS femto technology in popular mobile networks can be optionally integrated as a separate core network element or as part of the Radio Access Network (RAN) in a macro environment.

It is an advantage to rely on a core network element because the interfaces within the core network are standardized and therefore manufacturer-independent. Central management elements of the core network also communicate with each other about this (Mobile Switching Center). Although the complexity of the interfaces is very high, integration is difficult. However, if the network is based on an IP Multimedia Subsystem (IMS, Full IP Network), this integration is the best choice in the long run in terms of scalability and cost-effectiveness. The IP-based transmission of the femto cell integrates seamlessly into the infrastructure. The alternative would be a second autonomous IP core network only for the femtocells - but what you do not really want because of the drastically higher maintenance costs.

The preferred third alternative is integration as a RAN element; It is suitable for providers who do not maintain an IMS-based core network but rather mixed structures of circuit- and packet-oriented networks such as GSM and GPRS. Here, the femto network as one or more (virtual) Radio Network Controller (RNC) is integrated into the CN; usually base stations are connected. The interface between RNC and CN is also standardized and has always been used by providers for cross-vendor hardware component integration.

However, femtocells must not only fit into the infrastructure of the providers, but also into the radio landscape. In the present case, it is important that the cell should outperform blockers to locally minimize such mutual signal deletions and overlays (interferences).

• Eine Ortung einer derartigen Zelle ist auch im Gebäude möglich, indem beispielsweise die Femto-Zelle aus den IDs der umgebenden Makro-Zellen auf ihre eigene Position zurück schließt, bzw. wenn diese geblockt sind, die sie umgebenden Blocker mit Hilfe gängiger Methoden identifiziert. So können beispielswiese die Blocker erkennen, daß die Femptozelle, welche ein Wachmann im geblockten bzw. blockbaren Bereich mit sich führt, sich einbuchen will. Die diesen Vorgang erkennenden Blocker melden dieses Ereignis an die Zentrale-. Diese weiß somit im Kreuzpunkt welcher Blocker sich die Femtozelle befindet. Die Blocker werden dann versuchen das Einbuchen zu verhindern. Die Zentrale kann nun entweder das Netz der Femtozelle so weit hochfahren, daß sich das Telefon einbuchen kann und/oder sie kann die betreffenden Blocker in der Umgebung in ihrer Leistung reduzieren. Dadurch, daß Femtozelle und einbuchendes Mobiltelefon unterschiedliche Charakteristika aufweisen ist es auch ausgeschlossen, daß hier Verwechslungen geschehen.

A distinction is made between interferences between femto and macro cells in the licensed spectrum of the same network operator and disturbances of macro-cells by foreign femtocells, which, wanted in blockers, spark on the same frequency. With the first situation one counts in principle, if Femto cells To improve the coverage of a macro-cellular network, so even in the case of use in a blocked area. Against both disorders one can use several mechanisms, mostly based on the positioning of the femto cell. For this, the cells must be locatable. They are locatable with the help of the known methods, wherein in the following a method is presented in particular, which enables a location also in the building:

• A location of such a cell is also possible in the building, for example, by the femto cell from the IDs of the surrounding macro-cells back to their own position, or if they are blocked, which identifies surrounding blockers using common methods. For example, the blockers can recognize that the Femptzelle, which leads a guard in the blocked or blockable area, wants to book. The blockers recognizing this process report this event to the central office. This thus knows in the cross point which blocker the femtocell is. The blockers will then try to prevent logging in. The central office can now either raise the network of the femtocell so far that the phone can log in and / or it can reduce the blockers concerned in the environment in their performance. Due to the fact that the femtocell and the mobile phone which register have different characteristics, it is also ruled out that confusions occur here.

Alternatively, the femtocell can bypass the blocked frequencies to minimize interference with cells in its own spectrum. Different scenarios are conceivable: femto cells can, for example, use their own carrier frequency, so that macro cells remain unmolested or use the same, thus leading to a higher frequency efficiency contribute. The scenario is preferred, but also problematic because of the mutual influence. In an alternative scenario, the macro cell uses the entire band, but the femto cell uses only part of it, that is, just one channel.

Femto cells are particularly disadvantaged by third-party interference, because the separate femto and macro infrastructures do not genuinely have an overarching transmission power control mechanism. The macro environment knows nothing about the femtocell and therefore does not instruct its own devices to reduce their transmission power in the event of a fault. This is therefore according to the invention control the center accordingly by prioritizing the femtocell.

The interference management of femto cells is genuinely focused on the security and trouble-free operation of the macro network. This is in exceptional environments, such as Different from prisons.

In unblocked operation, in addition to fixed different channels for the macro and the femto network (channel assignment), a dynamic needs-based channel selection is possible. This technique, known as cognitive radio, describes self-organizing network components that use self-determined information to adjust their transmit parameters to fit as smoothly as possible into a radio environment. Tuning and prioritization of at least one local femtocell can be done according to the invention by means of the central station, e.g. the automated program prioritizes the femtocell over a blocker.

This means that the control center can also respond to changing radio situations and manual network planning is therefore ideally not necessary. With the method "Adaptive Pilot Power Control" or the "Downlink Power Management" The femto cells continuously measure the radio space and reduce their transmission power depending on the strength of the interference signals or increase it. This can also be done with the help of the central office.

Thus, the disturbances of the macro-environment can be either reduced, or selectively effect according to the invention. In doing so one tries on the basis of the transmission power to adjust the range so that the blocking effect for neighboring radio operators remains guaranteed. This is expressed in the size of the blocked zones (zones without reception) - the smaller these are, the better.

According to the invention, therefore, the maximum transmission power of the femto cells is dynamically regulated in such a way that, depending on the given macro-interference, a firmly defined range can be covered.

In addition to reducing or increasing the transmission power of the femto cell, uplink power capping may reduce or increase the transmit power of the terminals connected to the femto cell. A reduction ensures that femto users at the edge of the femtocells do not interfere with the macro environment due to increased uplink transmit power - instead, the handover to the macro cell occurs early. With an increase, it is the other way round.

In order to achieve this, the femtocell transmits the maximum transmission power to all connected terminals via the central unit. For this she uses broadcasts. "Dynamic Receiver Gain Management" regulates the gain and thus the sensitivity of the femto cell receiver, for example, if a terminal is in the immediate vicinity or farther away from the femtocell, or is disturbed by a blocker. For example, when reducing, the femto receiver may operate in different application scenarios without increasing the transmit power of the terminals and minimize unnecessary interference. This can be eg on the edge of Be the case where a blocker performance is still present, but the GSM operation must still be guaranteed.

However, femtocells can also handle very strong signals from nearby, non-femto-terminal devices. the methods described in the "Extended Tests for Dynamic Range", which are laid down in release 8/9 TR 25.104 of the 3GPP, have already been specified for customary base stations.

Another interference problem is due to the transmission technology of UMTS networks, the Wideband Code Division Multiple Access (WCDMA). Scrambling codes are used to separate the signals between the cells (synchronous CDMA) and those of the participants; Each element has its own code from a limited contingent. Using its code, the receiver picks out the signals intended for him from the entire data stream. The quota can be used multiple times in non-overlapping coverage areas of a network.

Parts of this quota are reserved for femto cells (scrambling code trees); they are automatically selected depending on their radio environment. However, these reserves are limited so that unwanted overlays can occur if there are many femto cells in an area.

Among other things, studies and tests show that a reliable integration of femtocells into a macro environment can be achieved and also that interferences between femtocells can be attenuated. This results in a performance increase for macro and femto subscribers, which also means an increase in the overall performance of the radio network and thus cost savings. However, since no specific algorithms are required for implementation, proprietary models known to those skilled in the art are used.

Claims (15)

GSM blocker comprising at least one GSM interference source and at least one on-off device, characterized in that the on-off device is located remotely from the GSM interference source and is in communication with at least one GSM source of interference therefrom The location of the GSM interference source can be switched on or off at will. A GSM blocker according to claim 1, wherein said turning on and turning off means is adapted to turn on and off each of said GSM sources of interference one by one. GSM blocker according to one of the preceding claims, wherein its source of interference interferes with at least one of the mobile radio frequency bands. GSM blocker according to claim 3, whose interference source disturbs all frequency bands at the same time. GSM blocker according to one of the preceding claims, wherein it emits a ready signal indicating its functionality. GSM blocker according to one of the preceding claims, wherein this sends a signal indicating whether the blocker is currently blocking one of the mobile radio frequency bands. A GSM blocker as claimed in claim 6, which transmits a signal which is blocked to the frequency bands. GSM blocker according to any one of the preceding claims, wherein each of these signals is not only transmitted to the on and off device, but in addition to at least one other of the aforementioned GSM blocker, which then transmits this signal to the on and off device. Network, comprising a center, as well as from this center outgoing electrical connections and connected to these electrical connections GSM blockers and / or sensors according to one of claims 1 to 8. A network according to claim 9, wherein the central office is automated by means of a microprocessor and a program. Network, according to one of the preceding claims, comprising at least one dummy cell. Network according to claim 9 to 11, wherein the microprocessor and the program sets each GSM blocker and / or sensor in its transmission power and spatial orientation so that a registering in a mobile network mobile phone is disturbed by this and / or register and / / or prevented from establishing a connection to its base station. Network according to claim 12, comprising a femtocell, wherein despite the interference allows a spatially limited mobile radio connection. A building space comprising a GSM blocker according to any one of the preceding claims. House comprising at least one building space according to claim 14 and / or at least one GSM blocker according to one of claims 1 to 15 and / or at least one network according to one of claims 9 to 13.

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