KR200251636Y1 - Unified repeating system for mobile communication service - Google Patents

Abstract

The present invention relates to an integrated mobile communication relay system, and signals from each switching center or base stations installed by a plurality of mobile communication providers, namely, three PCS companies, three to four IMT-2000 companies, and two cellular (IS95C) companies. Receive and integrate them in the home station repeater, and then convert and distribute the light through optical cables to local repeaters in several service areas or distributed to each floor in the building to use one home repeater in one service area or each floor of the building. By relaying the PCS, IMT-2000, and cellular (IS95C) all at once, the purpose is to reduce the installation cost, rent, and facility costs of optical cables in the same service area.

To this end, the present invention receives and integrates forward subscriber signals for each transmission frequency band transmitted from one or more switching centers or base stations, and then optically converts and distributes them to distribute and transmit subscriber signals concentrated in the building through optical cables or vice versa. A subscriber terminal of multiple frequency bands located in each floor of a building is synthesized as one, and the subscriber signal for each frequency band before the integration is extracted from the forward optical signal of each floor of the building and forward transmitted to the subscriber terminal or the reverse optical transmission thereof. It characterized in that it comprises an integrated relay means for relaying all at once.

Description

Unified Mobile Communication System {UNIFIED REPEATING SYSTEM FOR MOBILE COMMUNICATION SERVICE}

The present invention relates to a mobile communication relay system, an integrated type that enables the integrated relay service to be simultaneously provided to each floor in a building by using a common repeater for multiple subscriber signals of various frequency bands each serviced by a plurality of mobile communication operators. It relates to a mobile communication relay system.

Conventional mobile communication relay system has a large number of base stations in the urban area densely installed in the urban area, which can directly transmit subscriber channels to the inter-station interconnection link between the exchanges of other switching stations and the public switched line network (PSTN), and each base station is connected to each other by an optical cable. It is configured to connect and communicate between each base station.

In such a mobile communication relay system, a subscriber station located within its service area at each base station directly services a service antenna.

In addition, for a subscriber station located in a radio wave shielding area, a shaded area, or a long distance, a link repeater for frequency-converting and transmitting a subscriber channel through a transmission link antenna, and a service repeater for wirelessly receiving and reproducing the service is provided to the subscriber station. By installing at a distance of more than a certain distance, the service even for subscriber stations of radio wave shielding area, shadowed area or remote service that is not available.

However, such a conventional mobile communication relay system requires a lot of facility and operation costs by various repeaters such as PCS, IMT-2000, cellular (IS95C) in various places such as ground, subway, tunnel, etc. In addition, such a conventional mobile communication relay system has a problem that the noise is increased by a signal interference between repeaters that are closely installed in the downtown area and aesthetic problems, such that the increase in noise is limited to the number of installation of the repeater There was a problem.

Accordingly, there is a demand for the development of an integrated relay system capable of providing a high quality service at a low cost to a plurality of subscriber channels transmitted from a plurality of base stations.

The present invention has been made to solve the above problems, the object of the present invention is a signal from each of the switching stations or base stations that are independently installed and used by a plurality of PCS operators or IMT-2000 operators or cellular operators or IS95C operators respectively Received through an outdoor antenna outside the building, integrated at the mortgage repeater, and then converted and distributed by optical transmission to the self-service service relays on each floor of the building through the optical cable or vice versa. PCS, IMT-2000, and cellular (IS95C) subscriber terminals can be relayed all at once to provide an integrated mobile communication relay system that can drastically reduce redundant facilities and operating costs in the same building.

Another object of the present invention is to receive signals from each switching center or base station independently installed and used by a plurality of PCS operators or IMT-2000 operators or cellular operators or IS95C operators through outdoor antennas outside the building. In the same building, by integrating each other or IMT-2000 operators or cellular carriers in the mortgage repeater, optical conversion and optical distribution are distributed to the self-service service relays on each floor of the building through the optical cable or vice versa. Integrated mobile communication relay system that can greatly reduce overlapping facility costs and operation costs in the same building by allowing PCS subscriber stations on each floor of each floor, IMT-2000 subscriber stations, or cellular (IS95C) subscriber terminals to be relayed together. In providing.

In order to achieve the above objects, the present invention receives and integrates forward subscriber signals for each transmission frequency band transmitted from one or more switching centers or base stations, and then optically converts and distributes the signals, and transmits them to each floor in a building through an optical cable, or Synthesizing the subscriber signal concentrated in the reverse direction into one, and extracts the subscriber signal for each frequency band before the integration from the forward optical signal of each floor of the building and forward transmission to the subscriber terminal or reverse optical transmission thereof, It provides an integrated mobile communication relay system comprising an integrated relay means for relaying the subscriber station of the frequency band at once.

In order to achieve the object of the present invention, a first embodiment of the integrated relay means is a PCS transmission and reception signal, an IMT-2000 transmission and reception signal, a cellular transmission and reception signal, and an IS95C transmission and reception signal transmitted from each switching center or base station for each of a plurality of frequency bands. Receive one or more or all of them through one or more link antennas installed outside the building, filter and synthesize each one, and distribute the light to the number corresponding to the optical conversion and the number of floors of the building, through each optical cable (or coaxial cable). The reverse optical signals distributed in each floor or concentrated from each floor of the building through each optical cable (or coaxial cable) are synthesized into one, and then converted into high frequency conversion, and then distributed and filtered to subscriber signals for each of the plurality of frequency bands. Mortgage station floor reverse It is connected to the relay means and the distributed relay means for each mortgage station floor, each optical cable (or coaxial cable) is distributed to each floor of the building, the high frequency conversion of the optical signal transmitted from the distributed relay means for each base station floor is integrated by the high frequency conversion Each of the plurality of subscriber signals for each frequency band is distributed, and the plurality of subscriber signals are respectively filtered, frequency-converted, and high-frequency high-power-amplified, synthesized into one, and then multiple PCS network subscriber stations and / or IMT- through one service antenna. 2000 subscriber stations and / or cellular subscriber stations and / or IS95C network subscriber stations, or reverse subscriber signals for each frequency band by receiving a reverse signal received through one service antenna from the plurality of subscriber stations. To filter and amplify respectively And a plurality of self station floor service relaying means for synthesizing the amplified plurality of subscriber signals for each frequency band into one and converting them into an optical signal and then optically transmitting the distributed signals to the mortgage station floor through the optical cable (or coaxial cable) in a reverse direction. It can be configured to include.

In order to achieve another object of the present invention, a second embodiment of the integrated relay means includes PCS transmit / receive signals or IMT-2000 transmit / receive signals or cellular transmit / receive signals transmitted from each switching center or base station for each operator group. Alternatively, only one of the IS95C transmit / receive signals is received through one link antenna to distribute and filter each of the multiple subscriber signals in the group. High frequency conversion by splitting optically by the corresponding number and distributing it forwardly through each optical cable (or coaxial cable) to each floor of the building, or by combining the reverse optical signals concentrated from each building floor through each optical cable (or coaxial cable) into one. Then divided into a plurality of subscriber signals in the operator group. And a distributed relay means for each mortgage station operator that filters each carrier group and transmits backwards to an exchange or base station for each operator group, and is distributed to each floor of the building by connecting each optical cable (or coaxial cable) to the distributed relay means for each mortgage station operator. And a plurality of PCS subscribers or IMT-2000 subscriber stations or cellular subscribers of the service provider group through one service antenna after high frequency conversion, amplification, and filtering of optical signals transmitted from the distributed relay means for each mortgage station. Distributed by the mortgage station operator through an optical cable (or coaxial cable) by filtering, high frequency amplification and optical conversion of subscriber signals which are serviced by terminals or IS95C subscriber terminals or which are transmitted backward from a plurality of subscriber terminals of a corresponding carrier group. Optical transmission in the reverse direction to the relay means It may be configured to include a service relay means for each operator of his own country.

1 is a block diagram of an embodiment of an integrated mobile communication relay system underlying the present invention;

2 is a detailed circuit diagram illustrating an example of a configuration of the base station hub relay means 100 of FIG. 1.

Figure 3a is a detailed circuit diagram showing an example of the configuration of a low power outdoor magnetic station or waiting room service repeater 300

3B is a detailed circuit diagram showing an example of the configuration of the service relay 400 for the high power outdoor magnetic station or the tunnel.

4A and 4B are detailed circuit diagrams showing another embodiment of the present invention that can be implemented when the integrated mobile communication relay system according to the present invention is installed in a building.

4A is a detailed circuit diagram of distributed relaying means 100A for each mortgage station floor.

4B is a detailed circuit diagram of the self-relay floor service relay means 500A.

5a and 5b is a detailed circuit diagram showing another embodiment of the present invention that can be implemented when the integrated mobile communication relay system according to the present invention is installed in a building,

5A is a detailed circuit diagram of distributed relaying means 100B for each mortgage operator.

5B is a detailed circuit diagram of service relaying means 500B for each of self-operating station operators.

<Explanation of symbols for the main parts of the drawings>

100: mortgage station hub relay means 100A: mortgage station floor distributed relay means

100B: distributed relay means for each mortgage operator 200: optical cable

300: service relay for low power outdoor magnetic station or waiting room

400: service relay for high power outdoor magnetic station or tunnel

500: Self-Station Service Relay Means

500A: service relay means

500B: Service relay means for each operator

These objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

The integrated mobile communication relay system of the present invention constitutes a plurality of embodiments so that the mobile communication subscriber signals serviced in the PCS communication network, the IMT-2000 communication network, and the cellular (IS95C) communication network can be relayed using one integrated relay means. When the present invention is described in detail with reference to the accompanying drawings.

In the following embodiments, the integrated relay means, which is the basis of the present invention, will be described as an example of one hub relay installed in a mortgage station and a service relay for waiting room or tunnel installed in a self station in a service area. In addition, in the present specification, the waiting room or tunnel service repeater will be described as an example in which a subscriber signal of 3 PCS channels, 3 channels of IMT-2000, and 3 channels of cellular (IS95C) are integrated. The detailed description of the subscriber signal of the IS95C channel will be omitted. However, the technical idea of the present invention is not limited or limited thereto, and may be variously implemented by those skilled in the art.

1 is a block diagram of an integrated mobile communication relay system in which the present invention is based, and includes one or more PCS switching stations that relay subscriber signals for each transmission frequency band serviced in each communication network such as PCS, IMT-2000, and cellular (IS95C). Or a plurality of subscriber signals transmitted from an IMT-2000 switching center (or base station) and a cellular (IS95C) switching center (or base station) into a single unit, converting analog or digital electrical signals into optical signals, Forward (from the switching station to the subscriber station) optical transmission or the reverse (from the subscriber station to the switching terminal) to the service area of the service area, and extracts the subscriber signal for each frequency band before the integration from the forward transmitted optical signal. Forward transmission to subscriber terminal (In case of digital, after digital / analog conversion Frequency modulation (in the case of the reverse demodulation), the amplified transmission) or by optical transmission, and vice-versa, represents the whole schematic view of the integrated relay means for relaying at the same time the subscriber station of the multiple frequency band which is located within a coverage area. In the case of short-range in the waiting room, coaxial cable may be used instead of optical cable.

Referring to FIG. 1, the integrated relay means based on the present invention includes a mortgage station hub relay means 100 and a plurality of self station service relay means 500, and the plurality of self station service relay means ( 500 may be made of a small power outdoor magnetic station or waiting room service repeater 300 or a large output outdoor magnetic station or tunnel service repeater 400, these 300, 400 are each the mortgage station hub relay means 100 ) Is connected to the optical cable (200).

FIG. 2 is a detailed circuit diagram showing an example of a configuration of the base station hub relay means of FIG.

Referring to FIG. 2, the base station hub relay means 100 has the following forward relay circuit configuration for relaying forward subscriber signals. The forward relay circuit combines a plurality of mobile communication high frequency signals from PCS switching centers or base stations, IMT-2000 switching centers or base stations, cellular switching centers or base stations into one (modulation for converting to analog in digital case (reverse demodulation)). The signal synthesizer 101, the monitoring divider 102 for extracting the monitoring signal, the attenuator 103, the high frequency amplifier 104, the divider 105, and the monitoring transmission / reception. Signal 106, 2-8 divider 107, 2-8 or more divider 108, multiple high frequency amplifiers 109 (1) -109 (n) corresponding to each divided signal, and each distribution An optical diplexer corresponding to the signal and an electrical / light conversion or optical / electrical converter (110 (1) -110 (n)). Accordingly, one or more PCS network subscriber signals and / or IMT-2000 network subscriber signals and / or cellular network subscriber signals transmitted from respective switching stations or base stations for each frequency band are combined, uniformly attenuated, amplified, and amplified. The signal is redistributed to a predetermined number and optically transmitted through the optical cable 200 in the forward direction.

The base station hub relay means 100 has the following reverse relay circuit configuration for relaying reverse subscriber signals. The reverse relay circuit includes an optical diplexer and an electric / optical conversion and an optical / electrical converter (110 (1))-(110 (n)) corresponding to a multi-subscriber signal, a synthesizer (111) (112), (In the case of digital, it is converted to analog.) Divider 113, monitoring signal transmitter 114, attenuator 115, amplifier 116, distributor (PCS, IMT-2000, cellular (IS95C) 117). Therefore, the reverse optical transmission signals received through the optical cable 200 are synthesized into one, and attenuated and amplified uniformly, and the amplified synthesized signals are distributed and transmitted backward to each switching station or base station for each of a plurality of frequency bands.

3A and 3B illustrate embodiments of the self station service relay means of FIG. 1, and FIG. 3A is a configuration example of a small output outdoor self station or a waiting room service repeater 300, and FIG. It is a detailed circuit diagram which shows the structural example of the service relay 400 for stations or tunnels, respectively.

Referring to FIG. 3A, the low power outdoor self-termination or waiting room service repeater 300 may transmit a forward subscriber signal transmitted from the mortgage station hub relay means 100 through the optical cable 200 to the PCS or IMT-2000 or the like. In order to provide integrated services for each cellular (IS95C) communication method, the following forward service circuits are configured. The forward service circuit configuration includes an optical / electrical or electrical / optical converter and a diplexer 301, a divider 302 (in case of digital transmission, MUX, DEMUX, and digital analog conversion modulation), and monitoring. MNC 303, and forward forward processing means for forward-processing by integrating the signals distributed by the splitter for each PCS or IMT-2000 or cellular (IS95C) communication scheme.

For example, the forward integrated processing means for the PCS signal may include a band pass filter and an attenuator for PCS filtering one of the signals distributed by the splitter into three PCS or one frequency band (10MHz * 3 = 30MHz). (304 (1)), PCS high frequency amplifier 305 (1), PCS automatic temperature compensation attenuator 306 (1), PCS high frequency amplifier 307 (1), PCS high frequency high power amplifier 308 (1)), the transmit / receive diplexer 309 (1) for PCS, and the transmit / receive antenna 310 (1) for PCS.

The forward integrated processing means for the IMT-2000 signal includes a band pass filter for filtering one of the signals distributed by the splitter into three to four or one IMT-2000 frequency band (more than 60 MHz band) and an IMT-2000 signal. Attenuator 304 (2), high frequency amplifier 305 (2) for IMT-2000, auto compensation attenuator 306 (2) for IMT-2000, high frequency amplifier 307 (2) for IMT-2000, A high frequency high output amplifier 308 (2) for IMT-2000, a transmit / receive diplexer 309 (2) for IMT-2000, and a transmit / receive antenna 310 (2) for IMT-2000 can be configured.

The forward integrated processing means for the cellular (IS95C) signal includes a band pass filter and attenuator 304 for cellular (IS95C) for filtering one of the signals distributed by the splitter into two or one cellular (IS95C) frequency bands. 3)), high frequency amplifier 305 (3) for cellular (IS95C), auto compensation attenuator 306 (3) for cellular (IS95C), high frequency amplifier 307 (3) for cellular (IS95C), cellular And a high frequency high output amplifier 308 (3) for (IS95C), a transmission / reception diplexer 309 (3) for cellular (IS95C), and a transmission / reception antenna 310 (3) for cellular (IS95C). .

In some cases, the small output outdoor self-supporting station or waiting room service repeater combines PCS, IMT-2000, and cellular (IS95C) high frequency outputs into one unit (distribution in the reverse direction), and the synthesized It may be configured to include an integrated antenna 310 (4) for integrally transmitting and receiving signals.

Further, the low power outdoor self-supporting station or waiting room service repeater 300 has the following reverse service circuit configuration to service reverse subscriber signals transmitted from the multiple subscriber stations. The reverse service circuit configuration is a reverse service by integrating subscriber signals transmitted through the plurality of transmit / receive antennas 310 (1) -310 (3), respectively, for each PCS, IMT-2000, or cellular (IS95C) communication scheme. Each reverse integrated processing means for processing, a synthesizer 316, a monitoring transceiving signal 317, and an optical / electrical or electrical / optical converter and a diplexer 301.

The backward integrated processing means for the PCS signal includes a PCS transmit / receive antenna 310 (1), a PCS transmit / receive diplexer 309 (1), a PCS LNA 311 (1), and a PCS attenuator ( 312 (1)), the PCS amplifier 313 (1), the PCS automatic temperature compensation attenuator 314 (1), and the PCS high frequency amplifier 315 (1).

The reverse integrated processing means for the IMT-2000 signal includes a transmit / receive antenna 310 (2) for IMT-2000, a transmit / receive diplexer 309 (2) for IMT-2000, and an LNA 311 (2) for IMT-2000. )), Attenuator (312 (2)) for IMT-2000, amplifier (313 (2)) for IMT-2000, auto-compensation attenuator (314 (2)) for IMT-2000, high-frequency amplifier for IMT-2000 ( 315 (2)).

The backward integrated processing means for the cellular (IS95C) signal includes a transmit / receive antenna 310 (3) for cellular (IS95C), a transmit / receive diplexer 309 (3) for cellular (IS95C), and an LNA for cellular (IS95C). (311 (3)), cellular (IS95C) attenuator (312 (3)), cellular (IS95C) amplifier (313 (3)), cellular (IS95C) temperature compensation automatic attenuator (314 (3)), And a high frequency amplifier 315 (3) for cellular (IS95C).

Referring to FIG. 3B, the service relay 400 for a large output outdoor magnetic station or a tunnel may forward forward subscriber signals transmitted from the mortgage station hub relay means 100 through the optical cable 200 to each of the three PCS providers. Or IMT-2000 has the following forward service circuit configuration to separately service each frequency band for each of three carriers or three cellular carriers.

The forward service circuit configuration includes an optical / electrical or electrical / optical converter and diplexer 401, a splitter 402, a monitoring transceiver (MNC) 403, and a signal distributed by the splitter. A number of forward individual processing means for separately processing each subscriber signal by forwarding by distributing each of three PCS providers or three IMT-2000 carriers or three cellular (IS95C) providers, and a diplexer for PCS ( 411 (1)), PCS transmit / receive antenna 412 (1), IMT-2000 diplexer 411 (2), IMT-2000 transmit / receive antenna 412 (2), and cellular (IS95C) A diplexer 411 (3) and a transmit / receive antenna 412 (3) for cellular (IS95C).

The forward individual processing means for the PCS signal, the distributor 404 for distributing the signal distributed in the distributor 402 by each PCS 3 operators, IMT-2000 3 operators or cellular (IS95C) 3 operators respectively (1)) and a band pass filter and attenuators for the PCS (405 (1) to 405 (3)) for respectively filtering the signals distributed by the divider 404 (1) into frequency bands for each of the three PCS companies, Temperature Compensation Automatic Attenuator for PCS (406 (1) -406 (3)), IF Filter for PCS (407 (1) -407 (3)), High Frequency Amplifier for PCS (408 (1) -408 (3)) And a high frequency high power amplifier 409 (1) -409 (3) for the PCS, and a synthesizer 410 (1) for synthesizing the PCS signal.

In addition, since the individual forward processing means for the IMT-2000 signal and the cellular (IS95C) signal may be implemented in the same form as in the case of the PCS signal, a detailed description thereof will be omitted.

In some cases, the service relay for the large-powered outdoor magnetic station or tunnel includes a synthesizer 411 (4) for synthesizing (distributing in the reverse direction) PCS, IMT-2000, and cellular (IS95C) high frequency outputs into one, and the synthesized signal. It can be configured to include an integrated antenna (412 (4)) for transmitting and receiving integrated.

In addition, the service relay 400 for a large power outdoor self-supporting station or tunnel has the following reverse service circuit configuration to service a plurality of reverse subscriber signals transmitted through a transmission / reception antenna and a diplexer. The reverse service circuit configuration includes low noise amplifiers 413 (1) -413 (3), attenuators 414 (1) -414 (3), and high frequency amplifiers for PCS or IMT-2000 or cellular (IS95C), respectively. 415 (1) -415 (3)), automatic temperature compensation attenuators 416 (1) -416 (3), and high frequency high power amplifiers 417 (1) -417 (3).

Referring to the operation of the integrated mobile communication relay system and the effects thereof that are the basis of the present invention is configured as follows.

First, in the mortgage station hub relay means 100, the PCS switching station or base stations (3 companies), the IMT-2000 switching station or base stations (3-4 companies), the cellular (IS95C) switching station or base stations (2 or 3 companies) The mobile communication high frequency signals are synthesized by the synthesizer PCS 3 company, IMT-2000, cellular (IS95C) company 2 signal synthesizer 101 and then distributed by the monitoring distributor 102. One of these signals is sent for monitoring, and the other one is passed through the attenuator 103 and then amplified by the high frequency amplifier 104 at a predetermined level. Thereafter, the divider 105 divides the amplified signal again and transmits one of the amplified signals to the monitoring transmission / reception signal transmitter 106 to use as a monitoring transmission signal, and the other signal is divided into two to eight distributors 107 after each distribution. The signal is divided into two to eight or more dividers 108 to be divided into 36 equally divided abnormal signals to be amplified again by a plurality of high frequency amplifiers 109 (1) to 109 (n). After the distribution distribution in the optical diplexer and the electrical / optical or optical / electrical converters 110 (1)-(110 (n)), the optical cable 200 is passed through a small output outdoor self-termination station or a waiting room service repeater 300 or Each of the large power outdoor self-station or tunnel service relays 400 to transmit transmission.

On the contrary, the subscriber signal coming from the reverse transmission outdoor magnetic station or waiting room service repeater or the outdoor magnetic station or tunnel service repeater is also transmitted to the optical diplexer and the electric / optical conversion or the optical / electrical converter 110 through the same optical cable 200. (1)-(110 (n)) to separate the received signals from the synthesizer 111 to combine two to eight or more, and synthesizer 112 to combine two to four or more into one Synthesis up to 36 or more, then use one for monitoring after the amplification distribution in the divider 113 and the other after re-amplifying the amplifier 116 after adjusting the level in the attenuator 115 In addition, three PCS, three IMT-2000, and two or three cellular (IS95C) signals are distributed from three IMT-2000 companies and two cellular (IS95C) companies 117 to be transmitted to the switching center or base station.

Next, the operation of the small output outdoor magnetic station or the waiting room service repeater 300, the signal from the mortgage station hub relay means 100 is transmitted to the optical cable 200, the optical / electrical or electrical / optical converter and After converting into an electrical signal in the diplexer 301, the distributor 302 is divided into four, one enters the monitoring transceiver (MNC) 303, and the other one is PCS 3 companies 10MHz * 3 companies = 30MHz PCS attenuator 304 (1), PCS high frequency amplifier 305 (1), PCS temperature compensation automatic attenuator attenuator 306 (1), PCS high frequency amplifier 307 (1)), a high frequency high output amplifier 308 (1) for PCS, and a PCS transmit and receive antenna 310 (1) via a PCS transmit / receive diplexer 309 (1).

The other one is IMT-2000 attenuator 304 (2), IMT-2000 high frequency amplifier (305 (2)), IMT-2000 Band pass filter and IMT-2000 transmission / reception after passing the temperature compensation automatic attenuator (306 (2)), high frequency amplifier (307 (2)) for IMT-2000, high frequency high power amplifier (308 (2)) for IMT-2000 It is input to the diplexer 309 (2) and copied through the transmit / receive antenna 310 (2) for IMT-2000.

The other one is a cellular (IS95C) two bands of 25MHz band or more, and after passing the BandPass Filter, cellular (IS95C) attenuator (304 (3)), cellular (IS95C) high-frequency amplifier (305 (3)), cellular Cellular (IS95C) after passing the temperature compensation automatic attenuator (306 (2)) for (IS95C), high frequency amplifier (307 (3)) for cellular (IS95C), and high frequency high power amplifier (308 (3)) for cellular (IS95C) And transmit and receive through a transmit / receive diplexer 309 (3) for a cellular (IS95C) transmit / receive antenna 310 (3).

In the reverse direction, the signals transmitted from the PCS, IMT-2000, and cellular (IS95C) subscribers are transmitted / received by the PCS transmit / receive antenna 310 (1), the transmit / receive antenna 310 (2) for IMT-2000, and cellular (IS95C). Receive / receive antenna 310 (3), respectively, transmit / receive diplexer 309 (1) for PCS, transmit / receive diplexer 309 (2) for IMT-2000, and transmit / receive die for cellular (IS95C), respectively. It passes through the flexure 309 (3) and is received by the LNA 311 (1) for PCS, the LNA 311 (2) for IMT-2000, and the LNA 311 (3) for cellular (IS95C), respectively. . The PCS is then passed through a PCS attenuator 312 (1), PCS amplifier 313 (1), PCS automatic temperature compensation attenuator 314 (1), and PCS high frequency amplifier 315 (1). 316, the IMT-2000 is an attenuator 312 (2) for IMT-2000, an amplifier 313 (2) for IMT-2000, an automatic attenuation attenuator 314 (2) for IMT-2000, It is input to the synthesizer 316 via a high frequency amplifier 315 (2) for IMT-2000, and cellular IS95C is an attenuator 312 (3) for cellular (IS95C) and an amplifier 313 (3) for cellular (IS95C). )), The temperature compensation automatic attenuator attenuator 314 (3) for cellular (IS95C), the high frequency amplifier 315 (3) for cellular (IS95C), and input to the synthesizer 316 to synthesize one, Alternatively, the signal is converted into an optical signal by the electric / optical converter and the diplexer 301 and transmitted back to the optical cable 200 to the remote mortgage station hub relay means 100.

Finally, the operation of the high power outdoor magnetic station and the tunnel service relay 400 shows that the signal transmitted from the mortgage station hub relay means 100 through the optical cable 200 is optical / electrical or electrical / optical converter and optical die. Received through the flexure 401 and converted into an electrical signal, the received signal is passed through each band pass filter in the splitter 402, PCS (three companies), IMT-2000 (three to four companies), cellular And three types of IS95C (two or three companies). Among the distribution signals, the PCS signals are further distributed by three companies at 10 MHz in the four-splitter 404 (1) for PCS, and the IMT-2000 signals are distributed equally or unequally by three or four in the four-splitter for IMT-2000 again. Cellular or IS95C signals are distributed to two or three companies on a cellular (IS95C) divider or simply output to one company.

Among the signals distributed by the PCS distributor 404 (1), the PCS first operator 10 MHz frequency band signal is a PCS attenuator 405 (1), PCS temperature compensation automatic attenuator 406 (1), Down converter IF filter for PCS (407 (1)) for 10MHz channel pass through the post IF frequency band, after frequency regeneration in the mixer, PCS high frequency amplifier (408 (1)), PCS high frequency high power amplifier (409 (1)) Through the PCS Band Pass Filter and Synthesizer 410 (1), the PCS attenuators 405 (2) and 405 (3) also receive the 10MHz frequency band signals of the PCS 2nd or PCS 3rd operators. Temperature Compensation Automatic Attenuator (406 (2), 406 (3)) for PCS, IF Filter (407 (2), 407 (3)) for PCS for Downconverter 10MHz Channel Passage, High Frequency Amplifier (408) for PCS 2), 408 (3)) and the high frequency high power amplifiers 409 (2) and 409 (3) for the PCS, respectively, after input and synthesis into the band pass filter and the synthesizer 410 (1) for the PCS. Diplexer (411 (1)) and Water Supply for PCS Is copied from the antenna (412 (1)).

The IMT-2000 signal and the cellular signal distributed in the quadrature divider for the IMT-2000 and the quadrature for the cellular (IS95C) are also serviced in the same manner as in the case of the PCS signal, and the IF BAND PASS filter is allowed for each operator. Frequency band) through each diplexer (for IMT-2000, for cellular (IS95C)) (411 (2), 411 (3)) for each transmit / receive antenna (for IMT-2000, cellular (IS95C) Are copied through 412 (2) and 412 (3).

In the reverse direction, the signals transmitted by each subscriber station are transmitted and received by the respective transmit / receive antennas 412 (1), 412 (2), 412 (3), and respective diplexers 411 (1), 411 (2), 411 (3)), and the three PCS signals are received by the low noise amplifier 413 (1) for PCS, attenuator 414 (1) for PCS, high frequency amplifier 415 (1) for PCS, and temperature for PCS. Input to the synthesizer 418 via a compensating auto-attenuator 416 (1) and a high frequency amplifier 417 (1) for PCS, and three to four IMT-2000 signals are low noise amplifiers 413 (2) for IMT-2000. )), Attenuator (414 (2)) for IMT-2000, High Frequency Amplifier (415 (2)) for IMT-2000, Auto Compensation Attenuator (416 (2)) for IMT-2000, High Frequency Amplifier for IMT-2000 The signal is input to the synthesizer 418 via 417 (2), and the two or three cellular signals IS95C are low noise amplifier 413 (3) for cellular (IS95C) and attenuator 414 (3) for cellular (IS95C). )), High Frequency Amplifier (415 (3)) for Cellular (IS95C), Temperature Compensation Attenuator (416 (3)) for Cellular (IS95C), Cellular (IS95C) Input to the synthesizer 418 via a high frequency amplifier 417 (3).

The reverse majority subscriber signal synthesized by the synthesizer 418 is converted into an optical signal through an optical / electrical or electrical / optical converter and an optical diplexer 401, and then through the optical cable 200, the mortgage station hub relay means 100 Is sent).

In some cases, the PCS, IMT-2000, and Celluar (IS95C) high frequency outputs may be synthesized in the respective relay station service (309 (4) for the waiting room service repeater of FIG. 3A or the tunnel service repeater of FIG. 3B). In the case of 411 (4), integrated transmission (310 (4) for the waiting room service repeater of FIG. 3A) or (412 (4) for the tunnel service repeater of FIG. 3B). In addition, integrated mobile communication relaying becomes possible.

Meanwhile, when the integrated mobile communication relay system according to the present invention is installed in a building, the integrated relay means transmits and receives signals of PCS, IMT-2000, and cellular operators received from an outdoor antenna and integrates the signals from the home office repeater. Distributed relay means (100A) for each base station and mobile relay service (500A) for mobile communication service by floor through the local relay for service of each floor by converting and distributing the light and distributing it by optical cable (or coaxial cable) in each floor of building. The first embodiment can be implemented, or if necessary, PCS operators, IMT-2000 operators, or cellular operators are integrated in the home relay, and then optical conversion and optical distribution are performed. Mortgage that is distributed by (or coaxial cable) mobile communication service for each operator through local relay for service of each operator in each floor The second embodiment may be implemented by distributed relay means 100B for each station operator and service relay means 500B for each own station operator. In this case, the integrated relay means according to the first embodiment of the present invention and the integrated relay means according to the second embodiment are shown in FIGS. 4A and 4B, and FIGS. 5A and 5B, respectively.

4A and 4B are detailed circuit diagrams of an integrated relay means according to the first embodiment, wherein a plurality of optical relays connected to one mortgage station floor-based distributed relay means 100 and the mortgage station-based distributed relay means are provided by a plurality of optical cables. The self station level service relay means 500A is shown.

Referring to FIG. 4A, the base station floor-based distributed relay means 100A has the following forward relay circuits and reverse relay circuits for relaying forward subscriber signals and reverse subscriber signals, respectively.

The forward relay circuit and the reverse relay circuit in common transmit and receive antennas 120 for the PCS for receiving a plurality of mobile communication high frequency signals from the PCS switching station or base stations, IMT-2000 switching station or base stations, cellular switching station or base stations, respectively ( ) And the transmit / receive antenna 120 (2) for IMT-2000 and the transmit / receive antenna 120 (3) for cellular and filter diplexers 121 (1) -121 (3) for each thereof, or the PCS It includes a single integrated antenna (120 (4)) and a high frequency synthesizer / divider (121 (4)) that can receive both the signal and the IMT-2000 signal and the cellular signal to be separated into each channel signal.

And a forward relay circuit includes respective filter level adjustment amplifiers 122 (1) -122 (3) and bandpass filters 123 (1) -123 (3) corresponding to the plurality of filter diplexers, respectively. A signal synthesizer 124 for integrating the channel signals into one, a high frequency / optical converter 125 or a wideband high frequency converter 126 for converting the synthesized signal into an optical signal, and a number corresponding to the number of building floors; Each optical splitter includes an optical splitter 127 for distributing and transmitting the plurality of optical cables 200T (1) to 200T (n). Here, the optical splitter is replaced with a high frequency signal splitter (not shown) when using the wideband high frequency converter. Thus, the base station distributed relay means 100A combines one or more PCS network subscriber signals and / or IMT-2000 network subscriber signals and / or cellular network subscriber signals transmitted from respective switching stations or base stations for each frequency band into one. After constant amplification and light conversion, redistribution to a predetermined number corresponding to the number of building floors enables optical transmission to each floor in a forward direction through a plurality of optical cables 200T (1) to 200T (n).

The reverse relay circuit includes a signal synthesizer 131 for integrating an optical signal concentrated through a plurality of optical cables 200R (1) -200R (n) from each floor of the building into a single signal, and the synthesized optical signal. An optical / high frequency converter 132 for converting a signal into a high frequency signal, a splitter 134 for distributing the high frequency converted signal as a PCS or IMT-2000 or a cellular signal, and a subscriber signal for each of the distributed channels. Each filter 135 (1) -135 (3) and a high frequency amplifier 136 (1) -136 (3). Here, the optical / high frequency converter is replaced by the filter 133 when the signal transmission path is a coaxial cable. Therefore, the reverse optical transmission signals concentrated in one place from each floor of the building through the optical cable 200R (1) -200R (n) are synthesized into one and uniformly attenuated and amplified, and the amplified synthesized signals are distributed. Reverse transmission to each switching station or base station for each band is made possible.

Referring to FIG. 4B, the self station floor service relay means 500A includes a plurality of floor service relays 510-530 installed in each floor of the building to service forward subscriber signals and reverse subscriber signals, respectively. Each of the service repeaters in each layer has the following forward service circuit and reverse service circuit. Since the plurality of floor service relays 510-530 are all installed on the same floor in each building, the configuration and operation of one floor service relay 510 will be described instead of the description of the remaining service relays.

The forward service circuit receives the optical signal transmitted to the corresponding layer through one of the plurality of optical cables 200T (1) -200T (n) (200T (1)) to receive a PCS signal, an IMT-2000 signal, and a cellular signal. Optical frequency converter 511 for converting the signal into a frequency converter, a filter frequency conversion high frequency high power amplifier 512 (1) to 512 (3) corresponding to the PCS signal, the IMT-2000 signal, and the cellular signal, respectively, and the PCS signal and the IMT. A signal synthesizer 513 and a single integrated antenna 514 for synthesizing the -2000 signal and the cellular signal into one and copying the same to the subscriber station of the corresponding layer. As a result, the self-station floor-specific service relaying means 500A includes one or more PCS network subscriber signals and / or IMT-2000 network subscriber signals and / or cellular network subscriber signals transmitted from each switching center or base station for each of a plurality of frequency bands. The integrated antenna can be copied to serve the subscriber station of the floor.

The reverse service circuit includes a filter divider 515 for distributing a high frequency signal received through the one integrated antenna 514 into a PCS signal, an IMT-2000 signal, cellular signals, and a repeater remote monitoring signal, respectively. Filter amplifiers 517 (1) -517 (3) for filtering and amplifying the PCS signal, the IMT-2000 signal, and the cellular signal, respectively, and a remote for transmitting a part of the high frequency signal distributed from the filter distributor as a repeater remote monitoring signal. Supervisory signal transmitter 516, and a high frequency / optical converter 518 for synthesizing and optically converting the filter-amplified PCS signal, the IMT-2000 signal, and the cellular signal into one through an optical cable 200R (1). . Here, the high frequency / optical converter is replaced by a filter when the signal transmission path is a coaxial cable. Therefore, the PCS signal, the IMT-2000 signal, and the cellular signal received from the multiple subscribers through one integrated antenna are concentrated to the base station through the optical cable 200R (1), and are reversed to each switching station or base station for each frequency band. Can be transferred.

5A and 5B are detailed circuit diagrams of the integrated relaying means according to the second embodiment, and are connected to one mortgage station operator-specific distributed relay means 100B and the mortgage station operator-specific distributed relay means by a plurality of optical cables. A number of service relay means 500B for each of self-owner companies is shown.

Referring to FIG. 5A, the distributed relay means 100B for each mortgage station operator has the following forward relay circuits and reverse relay circuits for relaying forward subscriber signals and reverse subscriber signals, respectively.

The forward relay circuit and the reverse relay circuit selectively selectively only a high frequency signal of a specific operator from among a plurality of mobile carrier specific high frequency signals coming from a PCS switching station or base stations, an IMT-2000 switching station or base stations, a cellular switching center or base stations in common. Integrated antenna 140 for each operator to transmit and receive (can be any one of the PCS transmit and receive antennas, IMT-2000 transmit and receive antennas or cellular transmit and receive antennas, hereinafter the PCS transmit and receive antennas for transmitting and receiving a high frequency signal for three PCS The case will be described by way of example, and the rest of the IMT-2000 transceiver and cellular transceiver are the same as those of the PCS transceiver and the description thereof is omitted) and the diplexer 141 is included.

The forward relay circuit includes a splitter 142 for channel distribution of the received high frequency signal for each specific operator, and a respective pass filter for filtering, level adjustment, amplification, and attenuation of each channel signal. 143 (1) -143 (3)), high frequency signal level adjustment filters 144 (1) -144 (3), amplifiers 145 (1) -145 (3), and attenuators 146 (1) -146 ( 3)), a signal synthesizer 147 for synthesizing the three PCS signals into one, and a high frequency / photoconverter 148 for photoconverting the three PCS synthesized high frequency signals into one or a high frequency of the three PCS synthesized into one. When a signal is transmitted through a coaxial cable, a high frequency amplifier (149) for amplifying high frequency and the optical signal (or a high frequency signal) is divided into a number corresponding to the number of building floors and a plurality of optical cables (200T (1) -200T (n)) Optical splitters for distributed transmission to each floor within a building via a coaxial cable; 50). Here, the optical splitter is replaced with a high frequency signal splitter (not shown) when the high frequency amplifier is used. As a result, the distributed relay means 100B for each base station operator synthesizes one or more PCS network subscriber signals (or IMT-2000 network subscriber signals or cellular network subscriber signals) transmitted from each switching center or base station for each frequency band into one. After constant amplification and light conversion, redistribution to a predetermined number corresponding to the number of building floors enables optical transmission to each floor in a forward direction through a plurality of optical cables 200T (1) to 200T (n).

The reverse relay circuit integrates an optical signal (or a high frequency signal) that is concentrated through a plurality of optical cables 200R (1) -200R (n) (or coaxial cables) from each floor in a building into a single signal. A synthesizer 151, an optical / high frequency converter 132 for converting the synthesized optical signal into a high frequency signal, or a filter 153 for filtering a high frequency signal coming through a coaxial cable, and a PCS (or IMT-2000 or Cellular Signal) A distributor 154 for distributing each channel signal for each operator, and for reproducing frequency after high frequency bandpass and frequency conversion and IF (middle frequency) type filtering for the subscriber signals of each distributed channel. Each frequency reproducing apparatus 155 (1) -155 (3), a high frequency amplifier 156 (1) -156 (3), and a signal synthesizer 157. In this case, the optical / high frequency converter is replaced by a filter 153 when the signal transmission path is a coaxial cable. Therefore, attenuated and amplified by synthesizing the reverse optical transmission signals for a specific operator-specific subscriber signal that is concentrated in one place from each floor through the optical cable 200R (1) -200R (n) and uniformly attenuates and amplifies the amplified synthesis. By distributing the signal, it is possible to transmit backwards to each switching center or base station for each of a plurality of frequency bands.

Referring to FIG. 5B, the service relaying means 500B for each own station operator may include a plurality of service repeaters 540-560 installed at each floor of a building to service forward subscriber signals and reverse subscriber signals, respectively. And each of the service repeaters of each layer has a configuration of the following forward service circuit and reverse service circuit. In this case, since the service repeaters 540-560 for each of the plurality of operators are identically installed on each floor of the building, a description of the configuration and operation of the service repeater 540 for each operator is described instead of the description of the remaining service repeaters. .

The forward service circuit receives a PCS signal (or IMT-2000 signal or cellular signal) by receiving an optical signal transmitted to a corresponding layer through one of the plurality of optical cables 200T (1) -200T (n) 200T (1). Signal), an optical / high frequency converter 541, a high frequency amplifier 542, a pass filter 543, and a service antenna 544 which converts, amplifies, filters, and radiates to a shadowed area. Accordingly, the service relaying means 500B for each self-operating station provides one service antenna for one or more PCS network subscriber signals or IMT-2000 network subscriber signals or cellular network subscriber signals transmitted from each switching center or base station for each of a plurality of frequency bands. Through copying to the shadow area through the subscriber can be served to the subscriber terminal.

The reverse relay circuit includes a pass filter 545 and a high frequency amplifier for filtering, amplifying, and optically converting a high frequency signal received by the one service antenna 544 into the optical cable 200R (1). 547, an optical converter 548, and an operation state monitoring signal transmitter 546 for transmitting a portion of the high frequency signal filtered from the pass filter as an operation state monitoring signal. Here, the high frequency / optical converter is replaced by a filter when the signal transmission path is a coaxial cable. Accordingly, PCS signals (or IMT-2000 signals or cellular signals) received from multiple subscribers through one service antenna are concentrated to the mortgage station through the optical cable 200R (1), and each switching station or base station for each of a plurality of frequency bands. Reverse transmission is possible.

As a result, according to the first and second embodiments of the present invention, when a repeater is installed in a current metropolitan building, each service company is able to provide integrated services for each floor or operator in each floor of the building without having to install a repeater. As a result, it is possible to prevent redundant investment in transmission facilities, etc., and to arrange the service relay installation locations in the building uniformly, thereby reducing radio interference such as mutual interference of radio waves.

The present invention is not limited to the embodiments described above, it can be various modifications and changes by those skilled in the art, which is included in the spirit and scope of the present invention defined in the appended claims.

Therefore, according to the integrated mobile communication relay system of the present invention, PCS, IMT-2000, cellular (IS95C) signals can be provided by floor or operator integrated service at each floor in the building to prevent redundant investment in equipment, transmission facilities, etc. Therefore, it is possible to significantly reduce the facility cost and operation maintenance cost compared to the conventional mobile communication relay system, and there is an advantage of reducing radio wave pollution such as mutual interference of radio waves.

Claims (9)

After receiving and integrating the forward (from the switching station or base station to the subscriber station) subscriber signals of PCS and cellular (IS95C) IMT-2000 mobile service providers transmitted from one or more switching stations or base stations respectively relaying the subscriber signal for each transmission frequency band. Optical conversion and optical distribution are distributed to each floor in the building via an optical cable or synthesized into one subscriber signal concentrated in the opposite direction (from the subscriber terminal to the switching center or base station), and then integrated from the forward optical signal of each floor of the building. Integrated mobile communication relay comprising the integrated relay means for extracting the subscriber signal for each frequency band and forward transmission to the subscriber terminal or reverse optical transmission to relay subscriber terminals of multiple frequency bands located at each floor in the building at once. system. The method of claim 1, wherein the integrated relay means, Receive one or more PCS transmit / receive signals, IMT-2000 transmit / receive signals, cellular transmit / receive signals, and IS95C transmit / receive signals transmitted from each switching center or base station for each frequency band through one or more link antennas installed outside the building, respectively. After filtering and synthesizing with one, optical distribution and optical distribution are distributed to the number corresponding to the number of floors, and distributed to each floor in the forward direction through each optical cable, or by combining the reverse optical signals concentrated through each optical cable from each floor into one. A distributed relay means for each base station base station that distributes and filters each of the plurality of frequency band subscriber signals after high frequency conversion and transmits backwards to respective switching stations or base stations; Each optical cable is connected to the distributed relay means for each mortgage station floor and distributed in each floor of the building, and the optical signals forwarded from the distributed relay means for each mortgage station floor are converted to high frequency into subscriber signals for each frequency band before the integration. Each of the plurality of subscriber signals are distributed, and each of the plurality of subscriber signals is filtered, frequency-converted, and high-frequency high-power amplified and synthesized into one, and then multiple PCS network subscriber stations and / or IMT-2000 network subscriber stations and / or cellular communication networks through one service antenna. Serving as a subscriber station and / or an IS95C network subscriber station, or distributing reverse signals received from one of the plurality of subscriber stations through one service antenna to reverse subscriber signals for each frequency band, respectively, filtering and amplifying The amplified plurality of frequencies An integrated mobile communication relay system comprising a plurality of bands by its own base station service floor relay means via an optical cable and then converted into an optical signal by combining the optical transmission to one subscriber signal in a direction opposite to the floor distributed relay means the mortgage station. The distributed relay means for each mortgage station floor, One or more of the PCS network subscriber signal, the IMT-2000 network subscriber signal, the cellular network subscriber signal, and the IS95C network subscriber signal transmitted from each switching center or base station for each frequency band, respectively, to the PCS subscriber signals or the IMT-2000 subscriber signal. To each transmit / receive antenna for PCS and transmit / receive antenna for IMT-2000 and transmit / receive antenna for cellular (IS95C) respectively, and / or to PCS and IMT-2000 and cellular (IS95C) integrated type. Integrated mobile communication relay system characterized in that the forward and reverse relay by copying to one antenna. The distributed relay means for each mortgage station floor, The filtered PCS signal or IMT-2000 signal or cellular signal or IS95C signal of each band, and / or the signal integrated by PCS operators or the signal integrated by IMT-2000 operators or the cellular provider or IS95C Integrated mobile, which forwards or reverses a relay signal by copying the signals integrated between operators to PCS and IMT-2000 integrated antennas, PCS and cellular (IS95C) integrated antennas, or IMT-2000 and cellular (IS95C) integrated antennas. Communication relay system. The distributed relay means according to any one of claims 2 to 4, wherein In order to remove the interference between adjacent channels of the high frequency transformed and distributed signals during the reverse signal transmission, the frequency converter is lowered and then filtered by a frequency converter, and then reconverted and amplified to a service frequency, integrated, and then combined with a base station through a building external antenna. Integrated mobile communication relay system, characterized in that for transmitting. The method of claim 1, wherein the integrated relay means, Receive only PCS transmit / receive signals or IMT-2000 transmit / receive signals or cellular transmit / receive signals or IS95C transmit / receive signals from one switch group or base station for each operator group through one link antenna By distributing and filtering each of the plurality of subscriber signals in the corresponding group, synthesizing and optically converting the filtered signals into one, and then optically distributing them to the number corresponding to the number of floors of the building and forwardly distributing them to each floor of the building through each optical cable, or A mortgage station operator that synthesizes reverse optical signals concentrated through each optical cable from each floor of the building into one, and then converts them into a plurality of subscriber signals in the service provider group, and filters them and transmits them back to an exchange or base station for each service provider group. Distributed relay means; It is connected to the distributed relay means for each mortgage station operator by each optical cable and distributed in each floor of the building, and through one service antenna after the high frequency conversion, amplification and filtering of the optical signal transmitted from the distributed relay means for each mortgage station operator. Serving as a plurality of PCS subscriber stations or IMT-2000 subscriber stations or cellular subscriber stations or IS95C subscriber stations of the operator group, or filtering subscriber signals transmitted backward from a plurality of subscriber stations of the operator group And a service relay means for the self-station service provider for optically amplifying and converting the optical signal to the distributed relay means for the mortgage station service provider in a reverse direction through an optical cable. The distributed relay means for each mortgage station operator, One or more of the PCS network subscriber signal, the IMT-2000 network subscriber signal, the cellular network subscriber signal, and the IS95C network subscriber signal transmitted from each switching center or base station for each operator group, respectively, to the PCS subscriber signals or the IMT-2000 subscriber signal. To each transmit / receive antenna for PCS and transmit / receive antenna for IMT-2000 and transmit / receive antenna for cellular (IS95C) respectively, and / or to PCS and IMT-2000 and cellular (IS95C) integrated type. Integrated mobile communication relay system characterized in that the forward and reverse relay by copying to one antenna. The distributed relay means for each mortgage station operator, The filtered PCS signal or IMT-2000 signal or cellular signal or IS95C signal of each band, and / or the signal integrated by PCS operators or the signal integrated by IMT-2000 operators or the cellular provider or IS95C Integrated mobile, which forwards or reverses a relay signal by copying the signals integrated between operators to PCS and IMT-2000 integrated antennas, PCS and cellular (IS95C) integrated antennas, or IMT-2000 and cellular (IS95C) integrated antennas. Communication relay system. The distributed relay means according to any one of claims 6 to 8, wherein the mortgage station operators In order to remove the interference between adjacent channels of the high frequency transformed and distributed signals during the reverse signal transmission, the frequency converter is lowered and then filtered by a frequency converter, and then reconverted and amplified to a service frequency, integrated, and then combined with a base station through a building external antenna. Integrated mobile communication relay system, characterized in that for transmitting.