DE10243695B4 - Passive repeater system for radio communication for buildings and other buildings with high attenuation or shielding of electromagnetic waves for radio communication - Google Patents

Abstract

passive Repeater system for building and other buildings with no or very bad radio communication from and to the interior of the buildings or buildings, in which the radio communication with the help of special antennas done, the outside and inside the building arranged and passively connected to an RF line via couplers (7-9) are characterized in that the outer transmitting and receiving station (13) from their antenna over an RF line (19) to the RF port (11), further over the RF line (15) to the RF coupler (10) and from there via the HF cables (16) with the 3-way RF couplers (7-9) via the low-loss HF cables (17) directly without the interposition of other RF components, with the antennas (4-6) inside the building or buildings and the aerial of the external broadcasting and receiving station (13) to the RF terminal (11) optionally can.

Description

The Invention has the improvement of radio communication in and out buildings and other constructions to the content, by which by the building envelope or the location a reliable Radio connection to the outside and not guaranteed inside is.

The reliable Radio communication is especially in case of an accident, fires and other extraordinary Events for the respective task forces - especially the fire department - from crucial importance and for that reason also in the relevant construction and safety regulations.

to Realization of the demands for a reliable radio connection the relevant Construction and safety regulations were previously active radio systems in the buildings and other buildings installed. These radio systems exist from a transmitter / receiver unit, duplex filters, leak and slot cables as a spotlight. They are used only in the event of a disaster. In this case, need but they work safely. Since these are around is active, working with a power plant is a reliable one Emergency power supply and a permanent Maintenance and checking up FITNESS necessary. The price for Purchase and maintenance of these facilities are significant. In case of fire or in case of water ingress there is an increased Operating insecurity due to possible Failure of electronic components. Here is only on the temperature sensitivity pointed out by electrolytic capacitors.

Overcoming the disadvantages associated with the previous technical solutions, such as high acquisition and operating costs due to maintenance and failure in special disaster situations, is possible with passive radio transmission methods. As state of the art technical solutions have been described that use to increase the range of radio links passive reflectors, so in the DE 43 31 906 A1 . DE 974 374 B . DE 27 07 805 A1 . GB 2280 569 A . US 4,253,190 A , or with the help of special antenna designs on the shielding walls or components to bridge the electromagnetic shielding effect of these walls, so in the EP 0 458 592 A2 . GB 2 357 394 A PCT WO 01/24407 A1, JP 08274 697 AA and JP 58 188 940 AA

in the US 2002/0119748 A1 describes a passive repeater which is suitable for a frequency band from 1.7-2.11 GHz and radio communications for cellular networks, such as GSM or UMTS, between base stations and the interior of buildings guarantee should. For the intended application, this system is not suitable. It corresponds to the technical state.

The technical solutions described in the prior art are for the given Task not suitable. As suitable was a passive Radio transmission system found, which the radio link especially in case of an accident, at fires and other extraordinary Events by the respective forces, such as the fire department, out and inside as well as inside buildings or buildings reliably guaranteed.

The technical solution consists of a special antenna with high antenna gain, the electromagnetic Waves of the transmitting radio absorbs and these over another antenna inside the building or the buildings again and the radio transmits this electromagnetic Signals resumes and thus ensures the radio communication is. Both antennas are over a low-loss RF line connected together. With the setting up of an antenna outside and the other antenna inside the buildings or buildings This ensures safe radio contact with and out of buildings or buildings guaranteed.

The functionality such a system depends in particular the manufacturing precision of the antennas and the low attenuation High-frequency connections (HF cables and RF couplings) off. Out For this reason, these antennas are designed specifically for the transmission and reception frequencies the fire department or the respective user made and the RF cables and RF couplings in terms of damping properties for the respective Frequency range selected. This technical solution described here is already successful practically used. However, this technical solution has narrow limits in terms of range and communication in the building.

task This invention is to propose technical solutions for "passive repeaters", which also for larger buildings and other buildings, such as tunnels, underground large garages, Storing and storing a ensure radio communication to the outside and inside. This object is achieved by the features specified in claim 1 solved. A advantageous development of the invention is specified with claim 2.

To ensure that the necessary HF level at 1 W transmission power of the radios in the radio range to be supplied is reliably 20 dBμV, several external antennas ( 1 - 3 ), which individually with the indoor antennas ( 4 - 6 ) via low-loss RF cables ( 14 ) ( 17 ) and 3-fold RF coupler ( 7 - 9 ) are bidirectionally connected with low attenuation to all inputs and outputs.

Another inventive solution is the direct coupling of the antenna of the outer radio transceiver ( 13 ) via RF line ( 19 ) and an RF jack ( 11 ) outside the building. This is via a separate RF line ( 15 ) with an RF splitter coupler for 1 to 3 or x outputs ( 10 ) connected inside the building or buildings. This RF distributor ( 10 ) is via RF lines ( 16 ) and the 3-way couplers ( 7 - 9 ) in parallel with all antennas ( 4 - 6 ) connected inside.

With this solution can be an increase in the lengths of the RF cables ( 17 ) to the antennas ( 4 - 6 ) inside as well as a longer range with a secure radio connection.

With the parallel connection of the antennas ( 4 - 6 ) via the RF distributor ( 10 ) inside the buildings and buildings is a radio communication between each radio ( 18 ) in the buildings or construction possible.

The Advantages of the inventive "passive repeater" over building radio systems consist of lower investment costs (30-40%).

The "passive repeaters" do not require anyone regular maintenance, an annual review of the radio coverage in the buildings or the building is sufficient.

The Running costs are zero because no power is needed.

The "passive repeater" systems are always "online"! You do not have to, As with active systems, in case of fire or disaster "on" and then "off" again.

There no active electronic components are used, the "passive repeaters" have a high level of operational safety and reliability.

The "passive repeaters" are at the regulator in the Germany registration and free of charge.

The local Fire department or other emergency services can communicate in the usual radio mode "intercommunication". One adapt or reprogramming of the hand-held two-way radios is unnecessary compared to active building radio systems.

The "passive repeaters" are already today digital radio compatible. A changeover takes place through the exchange the antennas, provided the carrier frequency changed.

1-6

antennas

7-9

3 times RF coupler

10

RF coupler 1 to 3 or X-outputs

11

RF socket Outside at the building

12

Reinforced concrete wall or other structural shielding

13

External transmission and receiving station

14

RF lines between outer and inner antennas

15

RF line between RF jack and RF coupler ( 10 )

16

RF cables between RF couplers ( 10 ) and

the 3-way RF coupler ( 7 - 9 )

17

HF cables between 3-fold RF coupler ( 7 - 9 ) and

the antennas ( 4 - 6 )

18

Portable Radios

19

RF connection line from the antenna of the outer transmitter and Emp

starting station ( 13 ) to the RF connector ( 11 )

Claims (2)

Passive repeater system for buildings and other buildings with no or very poor radio communication from and to the inside of buildings or buildings, where the radio communication takes place with the help of special antennas located outside and inside the building and passively connected with an RF line Coupler ( 7 - 9 ), characterized in that the outer transmitting and receiving station ( 13 ) from its antenna via an RF line ( 19 ) to the RF connector ( 11 ), continue via the RF line ( 15 ) to the RF coupler ( 10 ) and from this via the RF lines ( 16 ) with the 3-way RF couplers ( 7 - 9 ) via the low-loss RF lines ( 17 ) directly without the interposition of further RF components, with the antennas ( 4 - 6 ) is connected inside the building or buildings and the antenna of the outer transmitting and receiving station ( 13 ) to the RF connector ( 11 ) can be optionally. Passive repeater system according to claim 1, characterized in that by means of the parallel connection of the antennas ( 4 - 6 ) via the RF coupler ( 10 ) inside the buildings or buildings a radio communication also between the hand-held radio stations ( 18 ) is possible inside the buildings or buildings.